Tumor Escape from Endogenous, Extracellular Matrix–Associated Angiogenesis Inhibitors by Up-Regulation of Multiple Proangiogenic Factors
نویسندگان
چکیده
منابع مشابه
Tumor escape from endogenous, extracellular matrix-associated angiogenesis inhibitors by up-regulation of multiple proangiogenic factors.
PURPOSE Thrombospondin-1 (Tsp1), endostatin, and tumstatin are extracellular matrix-associated proteins that inhibit angiogenesis. We examined the mechanisms by which tumor cells may bypass the antiangiogenic effects of these endogenous regulators. EXPERIMENTAL DESIGN CT26 colon and RenCa renal carcinoma cells were stably transfected with Tsp1, endostatin, or tumstatin cDNA. Subcutaneous and ...
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Angiogenesis is the process of neovascularization from parent blood vessels, which is a prerequisite for many physiological and pathological conditions and is regulated by a balance between endogenous angioinhibitors and angioactivators or angiogenic factors. Imbalance between angioinhibitors and angioactivators is associated with neovascularization capacity during progression of tumor developm...
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Angiogenesis, the formation of new blood vessels, is required for many pathologic processes, including invasive tumor growth as well as physiologic organ/tissue maintenance. Angiogenesis during development and adulthood is likely regulated by a balance between endogenous proangiogenic and antiangiogenic factors. It is speculated that tumor growth requires disruption of such balance; thus, the a...
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In the course of embryonic development, during some normal physiological processes in the adult, such as the female reproductive cycle, and also in a variety of pathologies, including tumour growth, new blood vessels develop from the pre-existing vascular network through endothelial cell sprouting, proliferation and fusion a process termed angiogenesis (Risau, 1997). Blocking tumour angiogenesi...
متن کاملEndogenous Matrix-Derived Inhibitors of Angiogenesis
Endogenous inhibitors of angiogenesis are proteins or fragments of proteins that are formed in the body, which can inhibit the angiogenic process. These molecules can be found both in the circulation and sequestered in the extracellular matrix (ECM) surrounding cells. Many matrix-derived inhibitors of angiogenesis, such as endostatin, tumstatin, canstatin and arresten, are bioactive fragments o...
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ژورنال
عنوان ژورنال: Clinical Cancer Research
سال: 2008
ISSN: 1078-0432,1557-3265
DOI: 10.1158/1078-0432.ccr-07-4126