Title:
TUMOR GROWTH INHIBITOR DERIVED FROM TISSUE, AND ITS PREPARATION AND USE
Document Type and Number:
Japanese Patent JPS63258497
Kind Code:
A
Abstract:
The invention provides a composition of matter designated tissue-derived growth inhibitor-1 (TGI-1) which comprises a protein which is a dimer composed of two polypeptides each having an apparent molecular weight of about 13,000 daltons and being joined to each other by disulfide bonds. TGI-1 has the property of inhibiting the growth of human tumor cells and of an established mink lung cell line (CCL 64) but not the growth of normal human foreskin fibroblasts and has an apparent molecular weight of about 26,000 daltons. The invention additionally provides a composition of matter designated tissue-derived growth inhibitor-2 (TGI-2) which is a protein which has the property of inhibiting the growth of human tumor cells and of an established mink lung cell line (CCL 64) but not the growth of normal human foreskin fibroblasts. TGI-2 has an apparent molecular weight of about 26,000 daltons and is a dimer composed of two polypeptides each of which has an apparent molecular weight of about 13,000 daltons and each is joined to the other by disulfide bonds under nonreducing conditions. This invention also provides a protein having tumor growth activity comprising the 112 amino acids shown in Figure 29 beginning with alanine at positon 1 and ending with serine at position 112. A nucleic acid molecule encoding the protein is also provided. A polypeptide designated CM-1 and a polypeptide recoverable from conditioned media of A431 cells are also disclosed.
Inventors:
KENISU KEI IWATA
RESURII AI GOORUDO
JIYON AARU SUTEIIBUNSUN
RESURII AI GOORUDO
JIYON AARU SUTEIIBUNSUN
Application Number:
JP26520187A
Publication Date:
October 25, 1988
Filing Date:
October 20, 1987
Export Citation:
Assignee:
ONKOJIIN SCI INC
International Classes:
A61K35/44; A61K35/50; A61K38/00; A61P17/00; A61P35/00; A61P43/00; C07K1/14; C07K1/20; C07K14/00; C07K14/005; C07K14/195; C07K14/435; C07K14/495; C07K14/52; C07K16/00; G01N33/574; C07K16/22; C07K16/24; C12N1/20; C12N5/10; C12N15/02; C12N15/09; C12N15/16; C12P21/02; C12P21/08; G01N33/577; G01N33/74; C12R1/19; C12R1/91; (IPC1-7): A61K37/02; C07K3/02; C07K3/12; C07K13/00; C07K15/04; C07K15/06; C12N1/20; C12N5/00; C12N15/00; C12P21/00; C12P21/02; C12R1/19; C12R1/91; G01N33/574; G01N33/577
Domestic Patent References:
| JPS6223A | 1987-01-06 |
Attorney, Agent or Firm:
Yoshio Kawaguchi (2 outside)
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