WO1997030159A2 - Proteine recombinante contenant un fragment c-terminal de msp-1 tde plasmodium - Google Patents
Proteine recombinante contenant un fragment c-terminal de msp-1 tde plasmodium Download PDFInfo
- Publication number
- WO1997030159A2 WO1997030159A2 PCT/FR1997/000291 FR9700291W WO9730159A2 WO 1997030159 A2 WO1997030159 A2 WO 1997030159A2 FR 9700291 W FR9700291 W FR 9700291W WO 9730159 A2 WO9730159 A2 WO 9730159A2
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- WIPO (PCT)
- Prior art keywords
- sequence
- plasmodium
- protein
- fragment
- recombinant protein
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Definitions
- the invention relates to new active principles of vaccines.
- MSP-1 10 derivatives of the major surface protein of merozoite forms of an infectious plasmodium for mammals, in particular humans, more generally known by the designation MSP-1
- This protein has already been the subject of numerous studies. It is synthesized in the schizont stage of parasites of the Plasmodium type,
- Plasmodium falciparum in particular Plasmodium falciparum, and is expressed in the form of one of the major constituents of the surface of the merozoites both during the hepatic stage and during the erythrocytic stage of malaria (1, 2, 3, 4). Due to the predominance and conservation in all known Plasmodium species of this protein, it has been suggested
- the C-terminal fragment having a molecular weight of 42 kDa (7.8) is noted, which is in turn cleaved again into an N-terminal fragment having a conventional apparent molecular weight of 33 kDa and a C-terminal fragment having a conventional apparent molecular weight of 19 kDa (9)
- references to proteins p42 and p19 derived from a certain type of Plasmodium are understood to relate to the corresponding C-termmal cleavage products of the MSP-1 protein of this Plasmodium, or, by extension, to products containing substantially the same amino acid sequences, obtained by genetic recombination or by chemical synthesis according to conventional techniques, for example by synthesizer of the “Applied System” type or by synthesis on solid phase of the “Mer ⁇ field” type.
- references to "recombinant p42" and “recombinant p19” refer to "p42" and "p19” obtained by techniques comprising at least one step of genetic engineering
- composition containing the fusion protein p19 with a glutathione-S-transferase produced in E coli in association with alum or liposomes did not have any protective effect on any of the six Aotus nancymai monkeys vaccinated (40)
- P vivax and the Aotus model for P falciparum, are artificial systems, requiring the adaptation of parasite strains and often the spienectomy of animals to obtain significant parasitaemias. Consequently, the vaccination results from these models can only have limited predictive value for humans
- the p42s originating from various infectious Plasmodiums for humans comprise hyperva ⁇ able regions mainly concentrating in their regions III, and even more in their respective regions II see the publication by Longacre, S (13) in which the p42 sequences of P cynomolgy, P vivax (Belem) and P vivax (Sal-I) were aligned.
- a first object of the invention is therefore to provide active ingredients of vaccines derived from the p42 better able to protect the host against the immune escape he was above question II is evident that the fragmentation of the p42 which has just been considered can also be extended to P falciparum, the parasite mainly responsible for acute forms of malaria in humans, and this all the more so as the locations of the zones separating regions I, II, III and IV of the constitutive sequences of P.cynomolgi and of the two varieties of P vivax were determined by analogy with corresponding sites, previously identified in P.falciparum, as described by (34) (35)
- the invention relates more particularly to vaccine compositions against a parasite of the Plasmodium type infectious for humans, containing as active ingredient a recombinant protein glycosylated or not, whose essential constitutive polypeptide sequence is that
- the invention therefore relates more particularly to a recombinant protein, glycosylated or not derived from p42 and containing both the essential parts of region I and region IV defined above for the constitution of immunogenic compositions, in particular vaccines
- recombinant proteins derived from the recombinant p42 produced by S Longacre et al (14) can be used in such compositions
- S Longacre et al succeeded in producing a recombinant p1 9 from MSP-1 of P vivax in a baculovirus vector system containing a nucleotide sequence coding for the p19 of Plasmodium vivax, in particular by transfection of cultures of insect cells [line of Spodoptera frugiperda (Sf9)] with baculovirus vectors containing, under the control of the polyhed ⁇ ne promoter, a sequence coding for the peptide fragments defined below, the sequences of which were placed in the following order in the baculovirus vector used 5'-term fragment of 35 base pairs of the polyhednne signal sequence, from which the methionine codon for initiating the expression of this protein had been mutated (in ATT),
- nucleotide sequence coding for p19 or a sequence coding for p42 of the MSP-1 protein of Plasmodium vivax, these sequences being also, as the case may be, either provided (“anchored” forms) or lacking (soluble forms) ) 3 ′ end regions of these nucleotide sequences whose extreme C-terminal expression products are pondered to play an essential role in the anchoring of the final protein p19 on the membrane of the parasite,
- MSP-1 therefore extended from amino acid Asp 1325 to amino acid Leu 1726 (anchored form) or amino acid Ser 1705 (soluble form) and for p19, the sequences extended from l amino acid Ile 1602 to amino acid Leu 1726 (anchored form) or to amino acid Ser 1705 (soluble form), it being understood that the complete amino acid sequences of p42 and p19 whose initial and terminal amino acids have shown in the above stem from the Belem P vivax isolate gene which has been sequenced (20)
- P cynomolgi has a double interest it is a parasitic species very close to P vivax, which is very infectious for the macaque very close to P vivax II can also infect humans
- P cynomolgi rhesus monkeys and toques monkeys
- the rhesus monkey is considered to be one of the most representative species of immune reactions in humans.
- the recombinant baculovirus proteins derived from a C-terminal part of MSP-1 (p42), and more particularly the partially deleted p42s, have a very significant antimalarial protective effect in a natural system, which constitutes the evaluation model for the most representative protective effect of MSP-1 for humans
- the protective effect obtained could be all the better if the partially deleted p42 is devoid of the hyperva ⁇ able region of the N-terminal part of p42, the effect of which can be deleterious in natural situations in which the vaccinated subject is confronted with significant polymorphism
- region II and of all or part of region III normally leads to better results. It is clear that a person skilled in the art would have no difficulty in producing fusion proteins between regions I and IV of p42. corresponding, or even between a region I and a region IV originating respectively from two p42 originating from two different varieties of Plasmodium II naturally goes without saying that these fusion proteins may also contain linking elements still corresponding to parts of region II , preferably from region III, preferably chosen from among the best conserved.
- the C-terminal polypeptide sequence of p33 when it is present, comprises less than 50 amino acid residues, or even even less than 35, or even less than 10 amino acid residues
- the polypeptide sequence of the partially deleted p42 protein may not contain the entire sequence coding for p19 (or of the region IV), naturally provided that the latter retains the capacity to induce protective antibodies against parasite
- the aforesaid “part of fragment has a molecular weight of 10 to 25 kDa, in particular of 10 to 15 kDa
- this part of polypeptide fragment contains at least one of the two regions EGF (abbreviation of the English expression "Epidermal Growth Factor")
- region I of the recombinant protein according to the invention is able to differentiate between the active fragments and those which would cease to be so, in particular of experimentally by producing modified vectors containing, for example, inserts comprising parts of p42 and in particular of deleted p42, of different lengths, respectively produced from the coding sequence for p42, if appropriate, partially deleted, by reaction with appropriate restriction enzymes, or alternatively exonucleolytic enzymes which would have been kept in contact with the fragment coding for the initial p42, if necessary, partially deleted for variable times; the capacity of the expression products of these inserts in corresponding eukaryotic cells, in particular insect cells, transformed by the corresponding modified vectors, to exert a protective effect, which can then be tested, in particular under the experimental conditions which will be described more away, about the examples.
- the expression products of these inserts must be capable of inhibiting a parasitaemia induced in vivo by the entire corresponding parasit
- the invention includes all immunogenic or even vaccinating compositions in which the essential constitutive polypeptide sequence of the active principle would consist of a peptide capable of inducing an immunological response of cell and / or humoral type equivalent to that produced by the protein. partially deleted as defined above, since the addition, deletion or substitution in its sequence of certain amino acids by others would not result in a significant modification of the capacity of the peptide thus modified hereinafter called "immunologically equivalent peptide" - also to inhibit the above parasitaemia
- Partially deleted p42 can naturally also be associated, whether on the N-terminal side or on the C-Terminal side or via a peptide bond, with another fragment of plasmodial protein having a vaccinating potential such as for example a protein (“Duffy Bmding Protein” by P vivax (29) or EBA-175 by P. falciparum (30) and (31) whose region is specifically rich in cysteine), provided that is not altered, on the contrary amplified, its capacity to inhibit a parasitaemia normally introduced in vivo by the corresponding parasite
- Duffy Bmding Protein by P vivax (29) or EBA-175 by P. falciparum (30) and (31) whose region is specifically rich in cysteine
- the fragment coding for the partially deleted p42 or a part thereof may also contain, upstream from its N-terminal end, an even different peptide sequence, for example a C-terminal fragment of the signal peptide of the protein MSP- 1.
- This sequence preferably comprises less than 50 amino acids, for example from 10 to 35 amino acids
- the invention also provides a method which largely remedies this difficulty. It also becomes possible to obtain much higher yields of p42 of P.falciparum - and other plasmodiums when similar difficulties are encountered - by putting in place implements a synthetic nucleotide sequence of substitution for the natural nucleotide sequence coding for the p42 of Plasmodium falciparum in an expression vector of a baculovirus system, this synthetic nucleotide sequence coding for the same p42, but being characterized by a proportion of nucleotides G and C higher than in the natural nucleotide sequence
- the invention stems from the discovery that the expression in a baculovirus system of a nucleotide sequence coding for a p42, partially deleted or not, was apparently linked to improved compatibility of the successive codons of the nucleotide sequence to express with the "cellular machinery" host cells transformable by baculoviruses, like what is observed for the natural nucleotide sequences normally contained in these baculoviruses and expressed in infected host cells, hence the bad expression, if not sometimes the complete absence of expression of a nucleotide sequence native to P falciparum; hence also a possible explanation for the more efficient expression observed of p42 of P.
- the invention therefore also relates, more generally, to a modified vector of the recombinant baculovirus type containing, under the control of a promoter contained in this vector and capable of being recognized by cells transfectable by this vector, a first nucleotide sequence coding for a signal peptide exploitable by a baculovirus system, characterized by a second nucleotide sequence downstream of the first, also under the control of this promoter and coding for a peptide sequence nevertheless comprising in its own constituent sequence, that:
- This sequence can be obtained by construction of a synthetic gene in which the natural codons have been changed by codons rich in G / C without their translation being modified (maintenance of the peptide sequence)
- said nucleotide sequence provided by synthetic DNA, can have at least 10% of codons modified with respect to the sequence of the natural gene or cDNA while retaining the characteristics of the translated natural sequence, that is to say -to say the maintenance of the sequence in ammo-acids
- sequence coding for the signal used may be that normally associated with the native sequence of the Plasmodium concerned. It may also be from another Plasmodium, for example P vivax or P cynomolgi or from another organism.
- the sequence coding for p42 or a part thereof within the vector considered is, if appropriate, devoid of the anchoring sequence of the protein native to the parasite from which it originates, in which case the expressed protein is generally excreted in the culture medium (soluble form)
- the invention also relates to the vectors in which the coding sequence contains the 3 'terminal end sequence coding for the hydrophobic C'-terminus sequence of p19 and which is normally involved in induction of the anchoring of the native protein to the cell membrane of the host in which it is expressed
- This 3'-terminal end region may moreover be heterologous with respect to the sequence coding for the rest of the corresponding p42, for example correspond to the 3'-terminal sequence originating from P vivax or from another organism since it codes for an anchoring sequence for all of the recombinant protein produced at the membrane of the cell host of the baculovirus system used as an example of such anchor sequences, the G
- the invention naturally also relates to recombinant proteins, these proteins comprising conformational epitopes recognized by human sera formed against the corresponding Plasmodium
- the invention also relates to any recombinant protein of the type indicated above, as soon as it comprises conformational epitopes such as produced in the baculovirus system, in particular those which are found to be unstable in a reducing medium.
- the invention naturally relates to said recombinant proteins, whether in the so-called soluble form or in the form provided with an anchoring region, in particular to the cellular hosts used in the baculovirus system.
- the invention also relates to any conjugation product between a partially deleted p42 or p42 as defined above, on the one hand, and a carrier molecule - for example a polylysine - alanine - usable for the production of vaccines, on the other hand, by intermediary of covalent bonds or not
- the vaccinating compositions using them also form part of the invention
- the invention also relates to the vaccine compositions using these recombinant or conjugated proteins, including, moreover, the proteins derived from Plasmodium vivax.
- compositions in which the aforementioned recombinant proteins are associated with an adjuvant for example an alum.
- the recombinant proteins comprising the extreme C-terminal region permitting their anchoring to the membrane of the cells in which they are produced are advantageously used in combination with lipids capable of forming liposomes and suitable for the production of vaccines Without having to be limited thereto, recourse may be had to the lipids described for this purpose by example in the work entitled “Liposomes technological, biological and pharmacological aspects” by J Delattre et al, INSERM edition, 1993
- PfMSP1 p ⁇ 9 S contains DNA corresponding to the 8 base pairs of the leader sequence and the first 32 amino acids of MSP1 of Plasmodium vivax from MeU to Asp 32 (isolate Belem, Del Portillo et al 1991 PNAS 88 , 4030) FOLLOWED by a GluPhe, due to the EcoRI site linking the two fragments. The whole is followed by the synthetic gene, described in FIG. 1, coding for Plasmodium. IX
- falciparum MSP1 p ⁇ 9 from Asn ⁇ 6 i 3 to Ser ⁇ 705 (isolate Kenya-Palo Alto, Chang et al 1988 Exp Parasitol. 67, 1). Construction is completed by two TAA stop codons. This construction gives rise to a recombinant protein which is secreted in the culture supernatant of infected cells.
- the construction PfMSP1 p19 A has characteristics of the previous except that the synthetic sequence ( Figure 1 B) codes for the MSP1 p ⁇ 9 of Plasmodium falciparum (Uganda-Palo alto isolate) from Asn ! 613 to ll ⁇ 726 followed by two stop codons of TAA.
- This construction gives rise to a recombinant protein which is anchored in the plasma membrane of infected cells by a structure of the glycosyl phosphatidyl inositol (GPI) type.
- GPI glycosyl phosphatidyl inositol
- Figure 1C is representative of the sequence of the recombinant protein PfMSP1 p ⁇ 9 S before cutting the signal sequence
- Figure 1 D is representative of the sequence of the recombinant protein PfMSP1 p ⁇ 9 S after cutting the signal sequence
- amino acids underlined in FIGS. 1 C and 1 D come from the EcoRI site used to join the nucleotide sequences derived from the N-terminal part of MSP1 of P vivax (with signal sequence) and of MSP1 p19 of P.falciparum
- FIG. 2 The recombinant antigen PfMSP1 p ⁇ 9 purified by immunoaffinity was analyzed by immunoblotting after SDS-PAGE in the presence (reduced) or absence (not reduced) of B-mercaptoethanol. The samples are loaded on gel after heating to 95 ° C. in the presence of 2% SDS. Under these conditions only bonds of the covalent type
- FIG. 3 The soluble PvMSP1 P42 recombinant antigen (Longacre et al. 1994, op. Cit.) was incubated for 5 hours at 37 ° in the presence of protein fractions derived from P. falciparum merozoites and separated by isoelectric focusing. the samples were then analyzed by immunoblotting in the presence (reduced) or absence (not reduced) of B-mercaptoethanol Fractions 5 to 12 of isoelectric focusing, as well as two total extracts of merozoites made in the presence (Tex) or absence (T) of detergent were analyzed The immunoblot was revealed with monoclonal antibodies specific for MSP1 p42 and pl9 of P.
- the DNA used for the above-mentioned construction was obtained from a clone of the Plasmodium cynomolgi ceylonesis strain (22-23) This strain was maintained by successive passages in its natural host (Macaca smica) and cyclic transmissions through mosquitoes (27) Blood parasites were obtained from infected monkeys at the mature schizont stage when the parasitaemias reached a level of 5% They were then purified according to the methods described in (25) The DNA was then extracted as described in (26 ) A 1200 base pair fragment was then produced using the PCR reaction using the oligonucleotides underlined in FIG.
- the 5 'oligonucleotide included an EcoRI restriction site and the oligonucleotide 3 'two synthetic TAA stop codons FOLLOWED by a Bglll restriction site This fragment was introduced by ligation and via these EcoRI and Bglll sites into the plasmid pVLSV 20 o already containing the signal sequence of the protein MSP-1 of P vivax (19)
- the new plasmid (pVLSV 20 oC 42 ) was used for the analysis of DNA sequences
- the PcMSP1 p ⁇ 9 S recombinant construct contains DNA corresponding to the 8 base pairs of the “leader” sequence and the first 32 amino acids of MSP1 from Met Plasmodium vivax! a Asp 32 (Belem isolate, Del Portillo et al 1991 PNAS 88, 4030) FOLLOWED by a GluPhe, due to the EcoRI site making the connection of the two fragments
- the whole is followed by the sequence coding for the MSP1 p ⁇ 9 of Plasmodium cynomolgi ( Ceylon strain) from Lys 276 to Ser 38 o Construction is terminated by two TAA stop codons This construction gives rise to a protein • >?
- the chromatography resin was prepared by binding 70 mg of a monoclonal antibody (obtained from a G17 12 hyb ⁇ dome deposited at the CNCM (Paris, France) on February 14, 1997 under the n ° l-1846, this G17 hyb ⁇ dome 12 was constructed from myeloma X63 Ag8 653 producing
- Plasmodium vivax recombinant MSP1 vaccination trial (p42 and p19) in the squirrel monkey Saimiri sciureus.
- GST glutathione-S-transferase
- Fifteen captured monkeys were used as follows: (1) 3 animals injected with 100 mcg PcMSP1 p42 soluble, 3 animals injected with 35 micrograms (1 st injection) or 50 ug (2 nd and 3 rd injections) PcMSP1 soluble p19; (3) 3 5 animals injected with a mixture of PcMSP1 p42 and p , 9 ; (4) 3 animals injected with the adjuvant plus PBS, (5) 3 animals not injected. The complete and incomplete Freund's adjuvant was used according to the protocol described above. The injections were made intramuscularly 4 weeks apart.
- the challenge infection was made by injecting 2.10 5 red blood cells infected with Plasmodium cynomolgi 4 weeks after the last injection Protection was assessed by determining daily parasitaemias in all animals by examining parasitaemias with giemsa Parasitaemias were classified as negative only after counting 400 smear fields Parasitaemias are expressed as a percentage of parasitized red blood cells
- Figures 6A-6G are illustrative of the results obtained In each of them appear the parasitaemias (expressed as percentages of parasitized red cells on the ordinate axis on the logarithmic scale) observed in the test animals as a function of the times after infection (in days on the x-axis)
- FIG. 6B relates to animals which had received a saline solution additionally containing the Freund's adjuvant
- FIG. 6C is a superposition of FIGS. 6A and 6B, with the aim of showing the relative results resulting from the administration of Freund's adjuvant to animals (the variations are obviously not significant)
- FIG. 6D provides the results obtained after vaccination with p42
- FIG. 6E relates to animals vaccinated with only p19
- FIG. 6F relates to the animals vaccinated with a mixture of p19 and p42
- FCA Freund's complete
- FIA incomplete adjuvant
- Monkeys bred in captivity were injected with 1 ml of moculum by the intramuscular route 2 times at 4 weeks apart as follows (1) 4 animals injected with 50 ⁇ g of soluble PfMSP1 p19 in the presence of Freund's adjuvant as follows l® re injection January 1 FCA / FIA, 2nd ignition 1 4 FCA / FIA, and mixed by the sequence 1 1 with the antigen in PBS, (2) 4 animals injected with 50 micrograms of PfMSP1 ⁇ 19 soluble in the presence of 10 mg of alum, (3) 4 animals injected with approximately 50 ⁇ g of PfMSP1 p19 anchored GPI reconstituted in liposomes compounds 1 1 in cholesterol molar and phosphatidyl cholme The animals were bled 17 days after the second injection
- FIG. 7 also illustrates these results. It relates to immunoblots produced on gel.
- the first three columns of the gel illustrate the m vivo response of monkeys to injections of p19 [(1) with Freund's adjuvant, (2) with l alum, (3) in the form of a liposome) and in particular the existence of high molecular weight complexes confirming the hypothesis of m vivo aggregation of p19 in the form of an oligomer, specific to the stage of maturation (when p42 is cut in p19 and p33)
- This vaccination trial also includes a third injection identical to the previous ones.
- the injection with Freund's adjuvant only includes FIA
- FIG. 7B The data for this figure are derived from the P falciparum I squirrel monkey vaccination trial (Figure 10 below) The figures correspond to the individual monkeys noted in Figure 10 The techniques and methods for this figure are the same as for Figure 7 except that the individual antiserum of each monkey noted was tested after three injections on the day of the challenge infection and the SHI antiserum was diluted 1,250 The results show that the antiserum of the 4 monkeys vaccinated with p19 and alum react significantly and specifically with very high molecular weight complexes while monkeys from other groups vaccinated with p19 and Freund's adjuvant or liposomes show only a low reactivity with these complexes Since the monkeys vaccinated with p19 and alum were also the best protected, this reactivity with high molecular weight complexes seems to indicate a protective effect, and this a despite that one monkey in the alum group was not protected from controls and another was only partially protected
- the invention naturally relates to other applications, for example
- the recombinant molecules according to the invention can be used to produce specific antibodies which can be used by passive transfer for the purpose of therapy adapted to severe malaria due to P falciparum with risk of mortality.
- the recombinant molecules PvMSP 1 p42 and PvMSP1 p19 and according to the invention, derived from baculovirus can and have been used to produce specific monoclonal antibodies mu ⁇ ns
- These antibodies, in combination with polyclonal anti p42 antisera from another species such as rabbit or goat, may be the basis of a semi-quantitative diagnostic test for malaria and capable of distinguishing between malaria due to P falciparum, which can be fatal, and malaria due to P vivax, which does not is generally not lethal
- the principle of this test would be to trap and quantify any MSP1 molecule containing the p42 part in the blood
- recombinant p42 and in particular partially deleted recombinant p42, are as follows (i) they are both well conserved within the same species and sufficiently divergent between different species to allow production easily species-specific reagents, under conditions whereby antibodies derived from different Plasmodiums can be produced, in particular against P falciparum and P vivax which do not give rise to cross-reactions, (n) since the recombinant p42 molecules derived from baculovirus seem to reproduce more the native structure of the corresponding native proteins, the antibodies produced against these proteins would be well suited for diagnostic use
- the microorganisms identified below were deposited according to rule 6 1 of Treaty of Budapest on 01 February 1996, under the following numbers
- the invention also relates to the use of these antibodies, then preferably fixed beforehand on a solid support (for example for affinity chromatography), for the purification of peptides of the p19 type initially contained in a mixture.
- the purification then involves a bringing this mixture into contact with the antibody, dissociation of the antigen-antibody complex and recovery of the purified p19 peptide
- p42 is deleted from a part or parts which are the least well conserved of region III, these are preferably regions having at least 10 amino acids and the degree of which storage in P vivax, P cynomolgi and P falciparum is less than 70% (less than seven of 10 identical amino acids, when aligned
- polyclonal and monoclonal antibodies of the present invention presented as recognizing p42 are preferably those which recognize more specifically regions other than region IV, to exclusion of region IV itself Preferably they recognize region I of p42
- the invention also relates to the hyb ⁇ domes secreting specific antibodies selectively recognizing the p42 of an MSP-1 protein of the merozoite form of a parasite of the Plasmodium type infectious for humans other than Plasmodium vivax and does not recognize
- these hyb ⁇ domes secrete antibodies which do not recognize the p42 of Plasmodium vivax or which specifically recognize the p42 of Plasmodium falciparum
- the invention also relates to a hyb ⁇ dome characterized in that it produces a monoclonal antibody which specifically recognizes the p42 of P vivax and of P cynomolgi
- a hyb ⁇ dome F10-3 was constructed from the myeloma X63 Ag8 653 producing IgG 2b / k recognizing the p42 of P vivax
- the invention also relates to vaccine compositions, also comprising mixtures of proteins or fragments, in particular mixtures of the type - p42 of P falciparum and p42 of P vivax,
- p42 is, where appropriate, devoid of its most hyperva ⁇ able regions.
- Sim B KL (1995) "EBA-175 An erythrocyte-bindmg ligand of Plasmodium falciparum”. Parasitology Today, vol. Il, n ° 6 213-217. (31) Sim BKL (1994) “Receptor and ligand domains for invasion of erythrocytes by Plasmodium falciparum” Science, 264 1941-1944 (32) Davies, A et al (1993), Biochem J 295 (Pt3) 889-896 "Expression of the glycosylphosphatidyhnositol-lmked complement-inhibitmg protein CD59 antigen m insect cells using a baculovirus vector"
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- Peptides Or Proteins (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980711022A KR20000065265A (ko) | 1996-02-14 | 1997-02-14 | 말라리아 원충 msp-1의 c-말단 단편을 함유하는 재조합 단백질 |
CA002245727A CA2245727A1 (fr) | 1996-02-14 | 1997-02-14 | Proteine recombinante contenant un fragment c-terminal de msp-1 tde plasmodium |
EP97905213A EP0880589A2 (fr) | 1996-02-14 | 1997-02-14 | Proteine recombinante contenant un fragment c-terminal de msp-1 tde plasmodium |
AU18842/97A AU1884297A (en) | 1996-02-14 | 1997-02-14 | Recombinant protein containing a c-terminal fragment of plasmodium msp-1 |
JP09529058A JP2000506381A (ja) | 1996-02-14 | 1997-02-14 | マラリア原虫msp―1のc末端断片を含む組換えタンパク質 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR96/01821 | 1996-02-14 | ||
FR9601821A FR2744723A1 (fr) | 1996-02-14 | 1996-02-14 | Proteine recombinante contenant un fragment c-terminal d'une proteine msp-1 d'un plasmodium infectieux pour l'homme pour la production de vaccins anti-paludiques |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1997030159A2 true WO1997030159A2 (fr) | 1997-08-21 |
WO1997030159A3 WO1997030159A3 (fr) | 1997-12-31 |
Family
ID=9489187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1997/000291 WO1997030159A2 (fr) | 1996-02-14 | 1997-02-14 | Proteine recombinante contenant un fragment c-terminal de msp-1 tde plasmodium |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0880589A2 (fr) |
JP (1) | JP2000506381A (fr) |
KR (1) | KR20000065265A (fr) |
AU (1) | AU1884297A (fr) |
CA (1) | CA2245727A1 (fr) |
FR (1) | FR2744723A1 (fr) |
WO (1) | WO1997030159A2 (fr) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998005355A1 (fr) * | 1996-08-02 | 1998-02-12 | Smithkline Beecham Biologicals S.A. | Composition vaccinale contre le paludisme |
EP0885012A4 (fr) * | 1996-01-29 | 2001-09-05 | Univ Georgetown | Vaccins contre la malaria faisant appel a un peptide de msa1 |
WO2002074802A3 (fr) * | 2001-03-19 | 2003-07-03 | Us Army | Vaccin recombinant p. vivax a base de proteine-1 p42 de merozoite |
US6593463B1 (en) | 1997-10-20 | 2003-07-15 | Genzyme Transgenics Corporation | Modified MSP-1 nucleic acid sequences and methods for increasing MRNA levels and protein expression in cell systems |
WO2002058727A3 (fr) * | 2001-01-26 | 2003-09-12 | Us Army | Vaccin a base de proteine 142 de merozoite p.falciparum de recombinaison |
US7306806B2 (en) | 2001-01-26 | 2007-12-11 | United States Of America As Represented By The Secretary Of The Army | Recombinant P. falciparum merozoite protein-142 vaccine |
US7595191B2 (en) | 2001-01-26 | 2009-09-29 | The United States Of America As Represented By The Secretary Of The Army | Isolation and purification of P. falciparum merozoite protein-142 vaccine |
US7737262B2 (en) * | 2000-02-08 | 2010-06-15 | University Of Hawaii | Plasmodium falciparum polypeptides and methods of using same |
US8211447B2 (en) | 2002-04-01 | 2012-07-03 | The United States Of America As Represented By The Secretary Of The Army | Recombinant P. falciparum merozoite protein-142 vaccine |
WO2015055772A1 (fr) | 2013-10-16 | 2015-04-23 | Shirley Longacre | Combinaison de protéines de surface de mérozoïte de plasmodium msp4 et 1 et utilisations correspondantes |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100373918B1 (ko) * | 2000-02-17 | 2003-02-26 | 주식회사 엘지생명과학 | 말라리아의 효소 면역학적 측정방법 및 이에 사용되는진단시약 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2154592A (en) * | 1984-02-22 | 1985-09-11 | Wellcome Found | Cloning of a malarial gene |
-
1996
- 1996-02-14 FR FR9601821A patent/FR2744723A1/fr not_active Withdrawn
-
1997
- 1997-02-14 KR KR1019980711022A patent/KR20000065265A/ko not_active Withdrawn
- 1997-02-14 WO PCT/FR1997/000291 patent/WO1997030159A2/fr not_active Application Discontinuation
- 1997-02-14 JP JP09529058A patent/JP2000506381A/ja active Pending
- 1997-02-14 EP EP97905213A patent/EP0880589A2/fr not_active Withdrawn
- 1997-02-14 AU AU18842/97A patent/AU1884297A/en not_active Abandoned
- 1997-02-14 CA CA002245727A patent/CA2245727A1/fr not_active Abandoned
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0885012A4 (fr) * | 1996-01-29 | 2001-09-05 | Univ Georgetown | Vaccins contre la malaria faisant appel a un peptide de msa1 |
US6551586B1 (en) | 1996-01-29 | 2003-04-22 | Georgetown University | Malaria vaccine based upon the addition of a MSA1 peptide |
WO1998005355A1 (fr) * | 1996-08-02 | 1998-02-12 | Smithkline Beecham Biologicals S.A. | Composition vaccinale contre le paludisme |
US7501553B2 (en) | 1997-10-20 | 2009-03-10 | Gtc Biotherapeutics, Inc. | Non-human transgenic mammal comprising a modified MSP-1 nucleic acid |
US6593463B1 (en) | 1997-10-20 | 2003-07-15 | Genzyme Transgenics Corporation | Modified MSP-1 nucleic acid sequences and methods for increasing MRNA levels and protein expression in cell systems |
US7632980B1 (en) | 1997-10-20 | 2009-12-15 | Gtc Biotherapeutics, Inc. | Modified nucleic acid sequences and methods for increasing mRNA levels and protein expression in cell systems |
US7354594B2 (en) | 1997-10-20 | 2008-04-08 | Gtc Biotherapeutics, Inc. | Merozoite surface protein 1 lacking glycosylation sites |
US7737262B2 (en) * | 2000-02-08 | 2010-06-15 | University Of Hawaii | Plasmodium falciparum polypeptides and methods of using same |
US7306806B2 (en) | 2001-01-26 | 2007-12-11 | United States Of America As Represented By The Secretary Of The Army | Recombinant P. falciparum merozoite protein-142 vaccine |
US6855322B2 (en) | 2001-01-26 | 2005-02-15 | The United States Of America As Represented By The Secretary Of The Army | Isolation and purification of P. falciparum merozoite protein-142 vaccine |
US7595191B2 (en) | 2001-01-26 | 2009-09-29 | The United States Of America As Represented By The Secretary Of The Army | Isolation and purification of P. falciparum merozoite protein-142 vaccine |
WO2003004525A3 (fr) * | 2001-01-26 | 2004-02-05 | Us Army | Isolation et purification and purification de vaccin a base de proteine-142 merozoite de p. falciparum |
WO2002058727A3 (fr) * | 2001-01-26 | 2003-09-12 | Us Army | Vaccin a base de proteine 142 de merozoite p.falciparum de recombinaison |
US8298546B2 (en) | 2001-01-26 | 2012-10-30 | The United States Of America As Represented By The Secretary Of The Army | Isolation and purification of P. falciparum merozoite protein-142 vaccine |
AU2002306759B2 (en) * | 2001-03-19 | 2007-05-31 | Walter Reed Army Institute Of Research | Recombinant P. vivax merozoite protein-1 p42 vaccine |
US7150875B2 (en) | 2001-03-19 | 2006-12-19 | The United States Of America As Represented By The Secretary Of The Army | Recombinant Plasmodium vivax merozoite protein-1 p42 vaccine |
WO2002074802A3 (fr) * | 2001-03-19 | 2003-07-03 | Us Army | Vaccin recombinant p. vivax a base de proteine-1 p42 de merozoite |
US8211447B2 (en) | 2002-04-01 | 2012-07-03 | The United States Of America As Represented By The Secretary Of The Army | Recombinant P. falciparum merozoite protein-142 vaccine |
WO2015055772A1 (fr) | 2013-10-16 | 2015-04-23 | Shirley Longacre | Combinaison de protéines de surface de mérozoïte de plasmodium msp4 et 1 et utilisations correspondantes |
Also Published As
Publication number | Publication date |
---|---|
EP0880589A2 (fr) | 1998-12-02 |
JP2000506381A (ja) | 2000-05-30 |
CA2245727A1 (fr) | 1997-08-21 |
AU1884297A (en) | 1997-09-02 |
WO1997030159A3 (fr) | 1997-12-31 |
KR20000065265A (ko) | 2000-11-06 |
FR2744723A1 (fr) | 1997-08-14 |
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