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WO1992001058A1 - Hybridomas - Google Patents

Hybridomas Download PDF

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Publication number
WO1992001058A1
WO1992001058A1 PCT/GB1991/001145 GB9101145W WO9201058A1 WO 1992001058 A1 WO1992001058 A1 WO 1992001058A1 GB 9101145 W GB9101145 W GB 9101145W WO 9201058 A1 WO9201058 A1 WO 9201058A1
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WO
WIPO (PCT)
Prior art keywords
cell
cells
hybrid
somatic
myeloma
Prior art date
Application number
PCT/GB1991/001145
Other languages
French (fr)
Inventor
Kim Sze Tan
Original Assignee
Ks Biomedix Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ks Biomedix Ltd. filed Critical Ks Biomedix Ltd.
Publication of WO1992001058A1 publication Critical patent/WO1992001058A1/en

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/575Hormones
    • C07K14/61Growth hormone [GH], i.e. somatotropin
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/46Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
    • C07K14/47Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/575Hormones
    • C07K14/59Follicle-stimulating hormone [FSH]; Chorionic gonadotropins, e.g.hCG [human chorionic gonadotropin]; Luteinising hormone [LH]; Thyroid-stimulating hormone [TSH]
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/575Hormones
    • C07K14/62Insulins
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N5/00Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
    • C12N5/10Cells modified by introduction of foreign genetic material
    • C12N5/12Fused cells, e.g. hybridomas
    • C12N5/16Animal cells
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N2510/00Genetically modified cells
    • C12N2510/02Cells for production

Definitions

  • This invention relates to immortalised hybrid cells which code for, express and secrete biological cell and membrane products, their production and use.
  • Desired biological products can be produced by growing bacterial or yeast cells whose DNA has been modified, by recombinant technology, to express the products.
  • Current genetic transfer/fusion techniques provide cells which are capable of secreting desired polypeptides.
  • a desired product containing an amino-acid sequence and an additional moiety such as a carbohydrate, lipid or glycolipid cannot be easily secreted.
  • the additional moiety must be added to the amino-acid sequence of the product at a later stage in product synthesis.
  • biological products having such additional moieties are glycoproteins, lipoproteins and glycolipids.
  • Moieties such as lipids or carbohydrates are important in the synthesis of biological products; their presence may be crucial in determining the stability and the biological/i munological activity of the final product.
  • Immortalised hybrid cells are disclosed in WO-A-8705929.
  • immortalised human liver cells and pancreatic islet cells are disclosed, respectively capable of secreting liver proteins and insulin.
  • Such cells are also disclosed in WO-A-8907601. They are produced by fusing a heteromyeloma and a somatic cell.
  • the present invention provides a hybrid cell line which is the product of cell fusion between a myeloma cell and a species-related somatic cell.
  • Activation comprises infection, as by a virus, or other transformation, e.g. by means of growth factors or mitogens, by means of which the genetic signals are amplified, and secretion is increased.
  • Hybrid cells of the present invention can be used to produce desired biological products that are expressed by the somatic cell. It is an advantage of the invention that, if the myeloma cells are of, say, animal origin, no human oncogenic products are secreted in addition to the desired product when the hybrid cell products are used in humans. It is preferred that the hybrid cells are the product of cell fusion between human myeloma cells and human somatic cells.
  • Standard gene cloning or fusion technologies can be used to produce a human or other hetero yeloma cell line which is derived from, say, another animal myeloma cell line.
  • Standard techniques can be used to fuse cells from the heteromyeloma cell line with cells from a line of selected human somatic cells such as thyroid cells, to produce a hybrid cell line. All the genes of the thyroid cell are incorporated into the hybrid and expressed, and cell products are secreted.
  • hybrid cell lines derived from human somatic cells which are, for example, pituitary cells, pancreatic endocrine and exocrine cells, adrenal medulla and cortex cells, blood cells, liver cells, lung cells, brain cells, bone marrow cells, gut cells, placental cells, ovary cells and testicular cells.
  • the hybrid cells can be cultured to express and secrete products expressed by the somatic cell; provided that the hybrid cells retain the appropriate genes, the products will continue to be secreted.
  • Insulin and other pancreatic hormones and enzymes can be produced from hybrid pancreatic cells, while LH (luteinising hormone) , FSH (follicle-stimulating hormone) , GH (growth hormone) , prolactin and TSH can be produced from hybrid pituitary cells. LH and FSH are recognised to enhance the success rate of in vitro fertilisation procedures. Other products of interest are erythropoietin and TPA (tissue plasminogen activator) .
  • some somatic cells, including pancreatic cells can be activated by certain Coxsackie viruses. Reoviruses will activate, for example, hepatic cells. Adrenoviruses, papovaviruses and leukoviruses can also infect and activate cells. The activating virus or other agent should have the effect of increasing cell division and thus increasing expression.
  • Activated hybridomas of the invention are generally more stable than the corresponding known, unactivated hybrid cells. Fusion and expression/secretion are also more reliable.
  • Example 1 illustrates the invention.
  • Human thyroid cells were activated with a mixture of growth factors and cytokines from the supernatant of a lymphoma cell line supplemented with insulin and insulin-like growth factors; for 3 days.
  • the activated thyroid cells were then fused with a myeloma fusion partner, HMYl, using polyethylene glycol.
  • Hybrid cells were screened for the secretion of thyroglobulin and CAMP, and for expression of TSH receptors.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Genetics & Genomics (AREA)
  • Zoology (AREA)
  • Endocrinology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Toxicology (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Molecular Biology (AREA)
  • Medicinal Chemistry (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Wood Science & Technology (AREA)
  • Biotechnology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Reproductive Health (AREA)
  • Cell Biology (AREA)
  • General Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Diabetes (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

A hybrid cell comprising a myeloma cell fused to a somatic cell which has been transformed with an agent which enhances secretion.

Description

HYBRIDO AS
Field of the Invention
This invention relates to immortalised hybrid cells which code for, express and secrete biological cell and membrane products, their production and use. Background of the Invention
Desired biological products can be produced by growing bacterial or yeast cells whose DNA has been modified, by recombinant technology, to express the products. Current genetic transfer/fusion techniques provide cells which are capable of secreting desired polypeptides. However, a desired product containing an amino-acid sequence and an additional moiety such as a carbohydrate, lipid or glycolipid cannot be easily secreted. The additional moiety must be added to the amino-acid sequence of the product at a later stage in product synthesis. Examples of biological products having such additional moieties are glycoproteins, lipoproteins and glycolipids. Moieties such as lipids or carbohydrates are important in the synthesis of biological products; their presence may be crucial in determining the stability and the biological/i munological activity of the final product. It is known to produce immortal hybrid cells by transfection/fusion of oncogenes or myeloma lines with somatic cells, usually of the same species. The use of such hybrid cells to produce a desired product carries high risk that cancer products will also be produced. Contaminating cancer products could induce cancer growth in individuals that are treated with the product. Immortalised hybrid cells are disclosed in WO-A-8705929. For example, immortalised human liver cells and pancreatic islet cells are disclosed, respectively capable of secreting liver proteins and insulin. -2-
Such cells are also disclosed in WO-A-8907601. They are produced by fusing a heteromyeloma and a somatic cell.
Summary of the Invention The present invention provides a hybrid cell line which is the product of cell fusion between a myeloma cell and a species-related somatic cell. Activation comprises infection, as by a virus, or other transformation, e.g. by means of growth factors or mitogens, by means of which the genetic signals are amplified, and secretion is increased. Detailed Description of the Invention
Hybrid cells of the present invention can be used to produce desired biological products that are expressed by the somatic cell. It is an advantage of the invention that, if the myeloma cells are of, say, animal origin, no human oncogenic products are secreted in addition to the desired product when the hybrid cell products are used in humans. It is preferred that the hybrid cells are the product of cell fusion between human myeloma cells and human somatic cells.
Standard gene cloning or fusion technologies can be used to produce a human or other hetero yeloma cell line which is derived from, say, another animal myeloma cell line. Standard techniques can be used to fuse cells from the heteromyeloma cell line with cells from a line of selected human somatic cells such as thyroid cells, to produce a hybrid cell line. All the genes of the thyroid cell are incorporated into the hybrid and expressed, and cell products are secreted.
Similar techniques to those outlined above can be used to produce hybrid cell lines derived from human somatic cells which are, for example, pituitary cells, pancreatic endocrine and exocrine cells, adrenal medulla and cortex cells, blood cells, liver cells, lung cells, brain cells, bone marrow cells, gut cells, placental cells, ovary cells and testicular cells. The hybrid cells can be cultured to express and secrete products expressed by the somatic cell; provided that the hybrid cells retain the appropriate genes, the products will continue to be secreted.
Insulin and other pancreatic hormones and enzymes can be produced from hybrid pancreatic cells, while LH (luteinising hormone) , FSH (follicle-stimulating hormone) , GH (growth hormone) , prolactin and TSH can be produced from hybrid pituitary cells. LH and FSH are recognised to enhance the success rate of in vitro fertilisation procedures. Other products of interest are erythropoietin and TPA (tissue plasminogen activator) . By way of example, some somatic cells, including pancreatic cells, can be activated by certain Coxsackie viruses. Reoviruses will activate, for example, hepatic cells. Adrenoviruses, papovaviruses and leukoviruses can also infect and activate cells. The activating virus or other agent should have the effect of increasing cell division and thus increasing expression.
Activated hybridomas of the invention are generally more stable than the corresponding known, unactivated hybrid cells. Fusion and expression/secretion are also more reliable.
The following Example illustrates the invention. Example
Human thyroid cells were activated with a mixture of growth factors and cytokines from the supernatant of a lymphoma cell line supplemented with insulin and insulin-like growth factors; for 3 days. The activated thyroid cells were then fused with a myeloma fusion partner, HMYl, using polyethylene glycol. Hybrid cells were screened for the secretion of thyroglobulin and CAMP, and for expression of TSH receptors.

Claims

1. A hybrid cell comprising a myeloma cell fused to a somatic cell which has been transformed with an agent which enhances secretion.
2. A hybrid cell according to claim 1, in which the somatic cell is a pituitary cell.
3. A hybrid cell according to claim 1, in which the somatic cell is an adrenal medulla or cortex cell.
4. A hybrid cell according to claim 1, in which the somatic cell is a pancreatic cell.
5. A hybrid cell according to any preceding claim, in which the myeloma cell and somatic cell are human cells.
6. A hybrid cell according to claim 5, in which the myeloma cell contains genes from an animal cell.
7. A hybrid cell according to any preceding claim, which is capable of secreting a lipoprotein, glycoprotein or glycolipid.
8. A hybrid cell according to any preceding claim, in which the agent is a virus, growth factor or mitogen.
9. A method of producing a biological cell and/or membrane product, which comprises culturing a hybrid cell according to any preceding claim.
PCT/GB1991/001145 1990-07-12 1991-07-11 Hybridomas WO1992001058A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909015327A GB9015327D0 (en) 1990-07-12 1990-07-12 Hybridomas
GB9015327.1 1990-07-12

Publications (1)

Publication Number Publication Date
WO1992001058A1 true WO1992001058A1 (en) 1992-01-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/001145 WO1992001058A1 (en) 1990-07-12 1991-07-11 Hybridomas

Country Status (2)

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GB (1) GB9015327D0 (en)
WO (1) WO1992001058A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999011759A1 (en) * 1997-09-04 1999-03-11 University Of Aberdeen GLUCOSE RESPONSIVE β-CELL LINE

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2083826A (en) * 1980-07-30 1982-03-31 Hayashibara Biochem Lab Process for the production of human insulin
GB2091741A (en) * 1980-12-13 1982-08-04 Hayashibara Biochem Lab Process for the Production of Human Adrenocorticotropic Hormone
GB2092156A (en) * 1980-12-30 1982-08-11 Hayashibara Biochem Lab Process for the production of human thyroid-stimulating hormone
GB2092157A (en) * 1980-12-30 1982-08-11 Hayashibara Biochem Lab Process for the production of human calcitonin
GB2092596A (en) * 1980-12-30 1982-08-18 Hayashibara Biochem Lab Process for the production of human parathyroid hormone
EP0163218A2 (en) * 1984-05-31 1985-12-04 Sloan-Kettering Institute For Cancer Research Method for the production of human T-T cell hybridomas and production of suppressor factor by human T-T cell hybridomas
US4806476A (en) * 1983-09-08 1989-02-21 Lovelace Medical Foundation Efficient cell fusion process

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2083826A (en) * 1980-07-30 1982-03-31 Hayashibara Biochem Lab Process for the production of human insulin
GB2091741A (en) * 1980-12-13 1982-08-04 Hayashibara Biochem Lab Process for the Production of Human Adrenocorticotropic Hormone
GB2092156A (en) * 1980-12-30 1982-08-11 Hayashibara Biochem Lab Process for the production of human thyroid-stimulating hormone
GB2092157A (en) * 1980-12-30 1982-08-11 Hayashibara Biochem Lab Process for the production of human calcitonin
GB2092596A (en) * 1980-12-30 1982-08-18 Hayashibara Biochem Lab Process for the production of human parathyroid hormone
US4806476A (en) * 1983-09-08 1989-02-21 Lovelace Medical Foundation Efficient cell fusion process
EP0163218A2 (en) * 1984-05-31 1985-12-04 Sloan-Kettering Institute For Cancer Research Method for the production of human T-T cell hybridomas and production of suppressor factor by human T-T cell hybridomas

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999011759A1 (en) * 1997-09-04 1999-03-11 University Of Aberdeen GLUCOSE RESPONSIVE β-CELL LINE
GB2343895A (en) * 1997-09-04 2000-05-24 Univ Aberdeen Glucose responsive ß-cell line
GB2343895B (en) * 1997-09-04 2001-09-05 Univ Aberdeen Glucose responsive ß-cell line

Also Published As

Publication number Publication date
GB9015327D0 (en) 1990-08-29

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