PMID- 14769229 OWN - NLM STAT- MEDLINE DCOM- 20040430 LR - 20171116 IS - 0412-4081 (Print) IS - 0412-4081 (Linking) VI - 39 IP - 12 DP - 2003 Dec TI - [The inhibitory effect of 8-chloroadenosine on tumor necrosis factor-induced proto-oncogene expression of retinal pigment epithelial cells]. PG - 750-2 AB - OBJECTIVE: To investigate the inhibitory effect of 8-chloroadenodine (8-CLA) on tumor necrosis factor-alpha (TNF-alpha)-induced proto-oncogene expression in retinal pigment epithelial (RPE) cells. METHODS: Primary culture and subculture of health bovine RPE cells were established in vitro. RPE cells were treated with tumor necrosis factor TNF-alpha (13.3 mmol/L) with or without 8-CLA (16 micro mol/L) for 30 minutes or 3 hours, respectively. C-fos and c-myc mRNA expression in RPE cells was detected by Northern blot analysis. RESULTS: Normal RPE cells expressed c-fos and c-myc mRNA at a low level. After treatment with TNF-alpha, the expression of c-fos and c-myc mRNA was increased by 3.13 and 1.5 fold, respectively, as compared to untreated cells. 8-CLA decreased TNF-alpha-induced c-fos and c-myc mRNA expression by 25.0% and 29.0%, respectively. CONCLUSIONS: 8-CLA can inhibit TNF-alpha-induced c-fos and c-myc mRNA expression in RPE cells. These findings may be useful for exploring new drugs for inhibiting the growth-induced proliferation of RPE. FAU - Yang, Ping AU - Yang P AD - The Third Hospital of Peking University, Peking University Eye Center, Beijing 100083, China. FAU - Zhang, Hui-rong AU - Zhang HR LA - chi PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhonghua Yan Ke Za Zhi JT - [Zhonghua yan ke za zhi] Chinese journal of ophthalmology JID - 16210540R RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) RN - 146-77-0 (2-Chloroadenosine) RN - 63231-63-0 (RNA) RN - PA05MFH3I7 (8-chloroadenosine) SB - IM MH - 2-Chloroadenosine/*analogs & derivatives/*pharmacology MH - Animals MH - Cattle MH - *Genes, fos MH - *Genes, myc MH - Immunohistochemistry MH - Pigment Epithelium of Eye/cytology/*drug effects/metabolism MH - RNA/analysis MH - RNA, Messenger/analysis MH - Tumor Necrosis Factor-alpha/*pharmacology EDAT- 2004/02/11 05:00 MHDA- 2004/05/01 05:00 CRDT- 2004/02/11 05:00 PHST- 2004/02/11 05:00 [pubmed] PHST- 2004/05/01 05:00 [medline] PHST- 2004/02/11 05:00 [entrez] PST - ppublish SO - Zhonghua Yan Ke Za Zhi. 2003 Dec;39(12):750-2.