摘要:
Novel compositions comprising Oncostatin M and congeners thereof, as well as methods for their preparation and methods for their use are provided. The compositions may be prepared by isolation from natural sources, or by recombinant means in either prokaryotic or eukaryotic host cells. In addition, the DNA and polypeptide sequences for Oncostatin M are disclosed. The compositions find use in modulating growth of cells, in particular inhibition of tumor cell proliferation, and stimulation of normal cell growth, especially cells involved in hematopoiesis. Cell growth inhibition compositions may additionally include an adjunctive agent comprising at least one of a transforming growth factor, tumor necrosis factor, or an interferon. Receptors having high affinity for Oncostatin M may additionally be used to screen polypeptides for Oncostatin M-like activity. Methods for use of antibodies to the compositions and probes specific for Oncostatin M mRNA as a means for detecting tumor cells are also provided.
摘要:
Polypeptides, polynucleotide sequences, DNA constructs and compositions are provided for the preparation and use of polypeptides associated with naturally occurring polypeptides found in brains. The small molecular weight polypeptides are growth inhibitors for neoplastic cells without inhibiting normal cells. The polypeptides comprise specific regions which are highly conserved, separated by less conserved regions. The polypeptides find use in inhibiting neoplastic growth and detecting receptors for the polypeptides. Antibodies are provided in conjunction with the polypeptides, which may be used together or separately for detecting the presence of the neoplastic cell retarding polypeptides.
摘要:
The present invention relates to monoclonal antibodies that define Oncostatin M, a novel cytokine. The monoclonal antibodies of the invention are capable of binding to Oncostatin M, inhibiting Oncostatin M receptor binding, and/or inhibiting Oncostatin M bioactivity. Such antibodies may be used to detect the presence at Oncostatin M and/or to modulate Oncostatin M bioactivities in an in vivo or in vitro system.
摘要:
The present invention relates to monoclonal antibodies that define Oncostatin M, a novel cytokine. The monoclonal antibodies of the invention are capable of binding to Oncostatin M, inhibiting Oncostatin M receptor binding, and/or inhibiting Oncostatin M bioactivity. Such antibodies may be used to detect the presence at Oncostatin M and/or to modulate Oncostatin M bioactivities in an in vivo or in vitro system.
摘要:
Novel polypeptides, polynucleotide sequences, DNA constructs and compositions are provided for the preparation and use of polypeptides associated with naturally occurring polypeptides found in brains. The small molecular weight polypeptides are growth inhibitors for neoplastic cells without inhibiting normal cells. The polypeptides comprise specific regions which are highly conserved, separated by less conserved regions. The polypeptides find use in inhibiting neoplastic growth and detecting receptors for the polypeptides. Antibodies are provided in conjunction with the polypeptides, which may be used together or separately for detecting the presence of the neoplastic cell retarding polypeptides.
摘要:
A novel family of growth regulatory proteins termed "epithelins" are described. The epithelins comprise several distinct members sharing significant structural homology. Two members of the epithelin family, epithelin 1 and epithelin 2, have been purified from natural sources. In addition, cDNA and PCR clones encoding mature and precursor epithelins from various chordate sources have been obtained and sequenced, including the complete human, mouse and rat epithelin precursors. The recombinant expression of rat epithelin precursor and mature forms is described. Purified epithelin 1 is a bifunctional growth regulator, capable of stimulating the growth of some cell types while inhibiting the growth of others. Purified epithelin 2 is functionally similar to epithelin 1 with respect to growth inhibitory bioactivity. In contrast, however, epithelin 2 is apparently not capable of eliciting the growth stimulatory activity characteristic of epithelin 1 and, in fact, antagonizes this epithelin 1 activity.
摘要:
A novel family of growth regulatory proteins termed "epithelins" are described. The epithelins comprise several distinct members sharing significant structural homology. Two members of the epithelin family, epithelin 1 and epithelin 2, have been purified from natural sources. In addition, cDNA and PCR clones encoding mature and precursor epithelins from various chordate sources have been obtained and sequenced, including the complete human, mouse and rat epithelin precursors. The recombinant expression of rat epithelin precursor and mature forms is described. Purified epithelin 1 s a bifunctional growth regulator, capable of stimulating the growth of some cell types while inhibiting the growth of others. Purified epithelin 2 is functionally similar to epithelin 1 with respect to growth inhibitory bioactivity. In contrast, however, epithelin 2 is apparently not capable of eliciting the growth stimulatory activity characteristic of epithelin 1 and, in fact, antagonizes this epithelin 1 activity.
摘要:
The present invention is directed to a family of heparin-binding epithelial cell growth factors termed amphiregulins (AR). In particular, it relates to the isolation of AR genes from different animal species, expression of the genes, identification of various forms of biologically active AR products, purification of the AR products, antibodies specific for AR, and uses of AR. AR is detectable in several normal human epithelial cells and in a high percentage of human colon cancers. In addition to stimulating the growth of these cultured epithelial cells, AR may have a wide range of applications including, but not limited to, accelerating the growth of normal epithelial cells. In some tumor cell lines, primarily of breast or ovarian carcinomas, AR serves as a direct growth inhibitor. On the other hand, AR may function as a growth stimulatory molecule in colorectal carcinomas and other pathologies of increased epithelial proliferation. In this regard AR may serve as a useful marker for disease staging and prognosis and reagents that specifically block AR may be of therapeutic use in controlling tumor cell growth and in disorders such as psoriasis.
摘要:
The molecular cloning, expression, and biological characteristics of a novel receptor tyrosine kinase related to the epidermal growth factor receptor, termed HER4/p180.sup.erbB4, are described. Antibodies to HER4 are disclosed. A HER4 ligand capable of inducing cellular differentiation of breast cancer cells is also disclosed. In view of the expression of HER4 in several human cancers and in certain tissues of neuronal and muscular origin, various diagnostic and therapeutic uses of HER4-derived and HER4-related biological compositions are provided.
摘要:
Neutral lipids are provided characterized by binding to phorboid and ingenoid receptors. These lipids are found in a wide variety of cellular sources as well as milk and may be isolated by specific extraction and chromatographic procedures. Depending upon the source, the glycerides may be mono- or di-glycerides, wherein the total number of carbon atoms of the fatty acids is in the range of 18 to 26, so that the monoglyceride has a fatty acid of at least 18 carbon atoms, while the di-glyceride has a fatty acid of at least 14 carbon atoms.