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  • 1
    Publication Date: 1990-09-28
    Description: The proliferative potential of human diploid endothelial cells is finite, and cellular senescence in vitro is accompanied by the failure of the endothelial cell to respond to exogenous growth factors. Senescent human endothelial cells were shown to contain high amounts of the transcript for the cytokine interleukin-1 alpha (IL-1 alpha), a potent inhibitor of endothelial cell proliferation in vitro. In contrast, transformed human endothelial cells did not contain detectable IL-1 alpha messenger RNA. Treatment of human endothelial cell populations with an antisense oligodeoxynucleotide to the human IL-1 alpha transcript prevented cell senescence and extended the proliferative life-span of the cells in vitro. Removal of the IL-1 alpha antisense oligomer resulted in the generation of the senescent phenotype and loss of proliferative potential. These data suggest that human endothelial cell senescence in vitro is a dynamic process regulated by the potential intracellular activity of IL-1 alpha.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maier, J A -- Voulalas, P -- Roeder, D -- Maciag, T -- AG07450/AG/NIA NIH HHS/ -- HL32348/HL/NHLBI NIH HHS/ -- HL35627/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1990 Sep 28;249(4976):1570-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Biology, Jerome H. Holland, Laboratory for the Biomedical Sciences, American Red Cross, Rockville, MD 20855.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2218499" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cell Division ; Cell Survival ; Cells, Cultured ; Endothelium, Vascular/*cytology/physiology ; Humans ; Interleukin-1/*genetics ; Kinetics ; Molecular Sequence Data ; Oligonucleotide Probes ; RNA, Antisense/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 1984-08-31
    Description: Endothelial cell growth factor (ECGF), an anionic polypeptide mitogen, binds to immobilized heparin. The interaction between the acidic polypeptide and the anionic carbohydrate suggests a mechanism that is independent of ion exchange. Monoclonal antibodies to purified bovine ECGF inhibited the biological activity of ECGF in crude preparations of bovine brain. These data indicate that ECGF is the principal mitogen for endothelial cells from bovine brain, that heparin affinity chromatography may be used to purify and concentrate ECGF, and that the affinity of ECGF for heparin may have structural and perhaps biological significance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maciag, T -- Mehlman, T -- Friesel, R -- Schreiber, A B -- 310765/PHS HHS/ -- 4807/PHS HHS/ -- New York, N.Y. -- Science. 1984 Aug 31;225(4665):932-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6382607" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; *Brain Chemistry ; Cattle ; Cell Division ; Chromatography, Affinity ; Endothelial Growth Factors ; Endothelium/*cytology ; Growth Substances/immunology/isolation & purification/*metabolism/pharmacology ; Heparin/*metabolism ; Ion Exchange
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 1985-05-17
    Description: Endothelial cells, which line the interior walls of blood vessels, proliferate at the site of blood vessel injury. Knowledge of the factors that control the proliferation of these cells would help elucidate the role of endothelial cells in wound healing, tumor growth, and arteriosclerosis. In vitro, endothelial cells organize into viable, three-dimensional tubular structures in environments that limit cell proliferation. The process of endothelial cell organization was found to result in decreased levels of the sis messenger RNA transcript and increased levels of the messenger RNA transcript for fibronectin. This situation was reversed on transition from the organized structure to a proliferative monolayer. These results suggest a reciprocity for two biological response modifiers involved in the regulation of endothelial cell proliferation and differentiation in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jaye, M -- McConathy, E -- Drohan, W -- Tong, B -- Deuel, T -- Maciag, T -- 14147/PHS HHS/ -- 310765/PHS HHS/ -- 4807/PHS HHS/ -- etc. -- New York, N.Y. -- Science. 1985 May 17;228(4701):882-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3890179" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Differentiation ; Cell Division ; Cells, Cultured ; Culture Media ; Endothelial Growth Factors ; Endothelium/*cytology/metabolism ; Extracellular Matrix/metabolism ; Fibronectins/biosynthesis/genetics ; *Gene Expression Regulation ; Growth Substances/pharmacology ; Humans ; Platelet-Derived Growth Factor/*genetics ; RNA, Messenger/*genetics ; *Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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