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- W2061158088 abstract "We have examined the role of extracellular matrix (ECM), cell growth, and dihydrotestosterone on the expression of prostate-specific antigen (PSA) by human prostatic carcinoma cells LNCaP. ECM induced a transient decrease in PSA mRNA even in the presence of growth factors. PSA mRNA, but not actin mRNA, was down-regulated on ECM in a biphasic manner and was not detected up to 48 hr after culture, but was re-expressed after 3 days. Cycloheximide and actinomycin D pretreatment did not prevent ECM-induced down-regulation of PSA mRNA, while actinomycin D-treated cells on plastic maintained stable PSA mRNA levels. DNA synthesis and PSA glycoprotein secretion were also transiently suppressed on ECM. LNCaP growth inhibition correlated with decreased glyceraldehyde phosphate dehydrogenase mRNA levels. However, the transient growth suppression induced by ECM was not observed with primary endothelial cells on Matrigel. Down-regulation of PSA mRNA by culture on Matrigel was reversible upon transfer to a different matrix substrate. Re-expression was highest on heparan sulfate proteoglycan (4-fold) and fibronectin or collagen I (2-fold) compared to plastic or laminin. Our results indicate that the morphology and proliferation of LNCaP cells may be regulated by the ability of ECM to control cellular differentiation and proliferation. © 1994 Wiley-Liss, Inc." @default.
- W2061158088 created "2016-06-24" @default.
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- W2061158088 date "1994-01-01" @default.
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- W2061158088 title "Regulation of prostate-specific antigen gene expression in LNCaP human prostatic carcinoma cells by growth, dihydrotestosterone, and extracellular matrix" @default.
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- W2061158088 doi "https://doi.org/10.1002/pros.2990240104" @default.
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