PMID: 9632109Jun 19, 1998Paper

Transforming growth factor-beta1 induces apoptotic cell death in cultured retinal endothelial cells but not pericytes: association with decreased expression of p21waf1/cip1

Journal of Cellular Biochemistry
Q Yan, E H Sage

Abstract

Transforming growth factor-beta1 (TGF-beta1) regulates a variety of cellular functions. In several types of cells, for example, it acts as a growth inhibitor and an inducer of apoptotic cell death. Although one of the important modulators in retinal vascular development and retinal neovascularization, the effects of TGF-beta1 on retinal microvascular cells are not fully defined. We have found that proliferation of both bovine retinal endothelial cells (EC) and pericytes was inhibited by TGF-beta1 in a concentration-dependent manner. However, only retinal EC lost viability after exposure to increasing concentrations of TGF-beta1 (up to 10 microg/ml) in the presence of 2% fetal bovine serum. Dying EC exhibited the morphological and biochemical characteristics of apoptosis. Fragmented nuclei and chromatin condensation were apparent after staining with the fluorochrome Hoechst 33258 and the reagent ApopTag; moreover, gel electrophoresis of DNA from TGF-beta1-treated EC demonstrated degradation of chromatin into the discrete fragments typically associated with apoptosis. The addition of anti-TGF-beta1 neutralizing antibody abolished the apoptotic cell death induced by TGF-beta1. Because not all the EC in a given culture died after e...Continue Reading

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Citations

Nov 10, 2010·Cellular and Molecular Neurobiology·Masahiro KamouchiTakanari Kitazono
Mar 15, 2000·Brain Research Bulletin·H K RuckerW E Thomas
Nov 6, 2004·Journal of Vascular Research·Jennifer S HolifieldRobert J Tomanek
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May 6, 2008·American Journal of Physiology. Lung Cellular and Molecular Physiology·Qing Lu
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Jul 14, 2004·Brain Research. Molecular Brain Research·Masahiro KamouchiMitsuo Iida
Jun 25, 2016·Calcified Tissue International·Paola CiceriMario Cozzolino
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May 11, 2004·American Journal of Physiology. Lung Cellular and Molecular Physiology·Nidhi S UndeviaSteven R White

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