http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Life Science : Ascochlorin activates p53 in a manner distinct from DNA damaging agents
( Ji Hak Jeong ),( Hiroo Nakajima ),( Junji Magae ),( Chiharu Furukawa ),( Keiko Taki ),( Kensuke Otsuka ),( Masanori Tomita ),( In Seon Lee ),( Cheorl Ho Kim ),( Hyeun Wook Chang ),( Kwan Sik Min ),( 영남대학교 약품개발연구소 2009 영남대학교 약품개발연구소 연구업적집 Vol.19 No.-
Ascochlorin activates p53 in a manner distinct from DNA damaging agents
Jeong, Ji-Hak,Nakajima, Hiroo,Magae, Junji,Furukawa, Chiharu,Taki, Keiko,Otsuka, Kensuke,Tomita, Masanori,Lee, In-Seon,Kim, Cheorl-Ho,Chang, Hyeun-Wook,Min, Kwan-Sik,Park, Kwang-Kyun,Park, Kwan-Kyu,Ch Wiley Subscription Services, Inc., A Wiley Company 2009 International journal of cancer: Journal internati Vol.124 No.12
<P>Ascochlorin, a prenylphenol antitumor antibiotic, profoundly increases the expression of endogenous p53 by increasing protein stability in the human osteosarcoma cells and human colon cancer cells. Ascochlorin also increases DNA binding activity to the p53 consensus sequence in nuclear extract and enhances transcription of p53 downstream targets. Ascochlorin specifically induces p53 phosphorylation at ser 392 without affecting ser 15 or 20, whereas DNA damaging agents typically phosphorylate these serines. Moreover, ascochlorin does not induce phosphorylation of ATM and CHK1, an established substrate of ATR that is activated by genotoxins, nor does it increase DNA strand break, as confirmed by comet assay. The structure-activity relationship suggests that p53 activation by ascochlorin is related to inhibition of mitochondrial respiration, which is further supported by the observation that respiratory inhibitors activate p53 in a manner similar to ascochlorin. These results suggest that ascochlorin, through the inhibition of mitochondrial respiration, activates p53 through a mechanism distinct from genotoxins. © 2009 UICC</P>