PMID- 11053652 OWN - NLM STAT- MEDLINE DCOM- 20001207 LR - 20190720 IS - 0304-3835 (Print) IS - 0304-3835 (Linking) VI - 160 IP - 2 DP - 2000 Nov 28 TI - Induction of apoptosis in prostate cancer cell lines by a flavonoid, baicalin. PG - 219-28 AB - The flavonoid baicalin (baicalein 7-D-beta-glucuronate), isolated from the dried root of Scutellaria baicalensis Georgi (Huang Qin), is widely used in the traditional Chinese herbal medicine for its anti-inflammatory, anti-pyretic and anti-hypersensitivity effects. In the present study, we investigated the in vitro effects of baicalin on the growth, viability, and induction of apoptosis in several human prostate cancer cell lines, including DU145, PC-3, LNCaP and CA-HPV-10. The cell viability after treating with baicalin for 2-4 days was quantified by a colorimetric 3-(4, 5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-s ulfophenyl)- 2H-tetrazolium (MTS) assay. The results showed that baicalin could inhibit the proliferation of prostate cancer cells. The responses to baicalin were different among different cell lines, with DU145 cells being the most sensitive and LNCaP cells the most resistant. Baicalin caused a 50% inhibition of DU145 cells at concentrations of 150 microM or above. The inhibition of proliferation of prostate cancer cells after a short period of exposure to baicalin was associated with induction by apoptosis, as evidenced by the typical nuclear fragmentation using Hoechst 33258 staining, terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) labeling, DNA fragmentation, activation of caspase-3 and cleavage of poly-ADP-ribose polymerase (PARP). The results indicate that baicalin has direct anti-tumor effects on human prostate cancer cells. FAU - Chan, F L AU - Chan FL AD - Department of Anatomy, Basic Medical Sciences Building, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China. franky-chan@chuk.edu.hk FAU - Choi, H L AU - Choi HL FAU - Chen, Z Y AU - Chen ZY FAU - Chan, P S AU - Chan PS FAU - Huang, Y AU - Huang Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Ireland TA - Cancer Lett JT - Cancer letters JID - 7600053 RN - 0 (Androgens) RN - 0 (Antineoplastic Agents, Phytogenic) RN - 0 (Drugs, Chinese Herbal) RN - 0 (Flavonoids) RN - 0 (Growth Inhibitors) RN - 347Q89U4M5 (baicalin) SB - IM MH - Androgens/physiology MH - Antineoplastic Agents, Phytogenic/*pharmacology MH - Apoptosis/*drug effects MH - Cell Division/drug effects MH - DNA Fragmentation MH - Drugs, Chinese Herbal/*pharmacology MH - Flavonoids/*pharmacology MH - Growth Inhibitors/pharmacology MH - Humans MH - In Situ Nick-End Labeling MH - Male MH - Neoplasms, Hormone-Dependent/drug therapy/pathology MH - Prostatic Neoplasms/drug therapy/*pathology MH - Tumor Cells, Cultured EDAT- 2000/10/29 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/10/29 11:00 PHST- 2000/10/29 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/10/29 11:00 [entrez] AID - S0304383500005917 [pii] AID - 10.1016/s0304-3835(00)00591-7 [doi] PST - ppublish SO - Cancer Lett. 2000 Nov 28;160(2):219-28. doi: 10.1016/s0304-3835(00)00591-7.