Title : Expression of prostate-specific membrane antigen (PSMA), increases cell folate uptake and proliferation and suggests a novel role for PSMA in the uptake of the non-polyglutamated folate, folic acid.

Pub. Date : 2010 Feb 15

PMID : 19830782






12 Functional Relationships(s)
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1 Expression of prostate-specific membrane antigen (PSMA), increases cell folate uptake and proliferation and suggests a novel role for PSMA in the uptake of the non-polyglutamated folate, folic acid. Folic Acid folate hydrolase 1 Homo sapiens
2 Expression of prostate-specific membrane antigen (PSMA), increases cell folate uptake and proliferation and suggests a novel role for PSMA in the uptake of the non-polyglutamated folate, folic acid. Folic Acid folate hydrolase 1 Homo sapiens
3 Expression of prostate-specific membrane antigen (PSMA), increases cell folate uptake and proliferation and suggests a novel role for PSMA in the uptake of the non-polyglutamated folate, folic acid. Folic Acid folate hydrolase 1 Homo sapiens
4 Expression of prostate-specific membrane antigen (PSMA), increases cell folate uptake and proliferation and suggests a novel role for PSMA in the uptake of the non-polyglutamated folate, folic acid. Folic Acid folate hydrolase 1 Homo sapiens
5 Expression of prostate-specific membrane antigen (PSMA), increases cell folate uptake and proliferation and suggests a novel role for PSMA in the uptake of the non-polyglutamated folate, folic acid. Folic Acid folate hydrolase 1 Homo sapiens
6 As PSMA is able to hydrolyze polyglutamated folates, and cancer cells proliferate directly in response to available folate, we examined if expression of human PSMA in PC-3 cells confers a proliferative advantage in a microenvironment with physiologically relevant folate levels. Folic Acid folate hydrolase 1 Homo sapiens
7 Folic acid was tested for its ability to competitively inhibit the enzymatic activity of PSMA. Folic Acid folate hydrolase 1 Homo sapiens
8 In media containing physiologic levels of folate, PSMA expression increased folic acid uptake approximately twofold over non-expressing cells. Folic Acid folate hydrolase 1 Homo sapiens
9 In media containing physiologic levels of folate, PSMA expression increased folic acid uptake approximately twofold over non-expressing cells. Folic Acid folate hydrolase 1 Homo sapiens
10 Folic acid was able to inhibit hydrolysis of N-[4-(phenylazo)-benzoyl]-glutamyl-gamma-glutamic acid (PABGgG) by PSMA in a competitive inhibition assay. Folic Acid folate hydrolase 1 Homo sapiens
11 CONCLUSION: These findings implicate PSMA in both the metabolism of polyglutamated folates, and in the uptake of monoglutamated folates. Folic Acid folate hydrolase 1 Homo sapiens
12 CONCLUSION: These findings implicate PSMA in both the metabolism of polyglutamated folates, and in the uptake of monoglutamated folates. Folic Acid folate hydrolase 1 Homo sapiens