“秉持严谨、深入、持续、开放与创新的态度,尊重他人成果,携手交流共进,推动科研发展。”
Research Frontline
科研前线
01
—
问题论文
标题:The transcription factor c-Fos coordinates with histone lysine-specific demethylase 2A to activate the expression of cyclooxygenase-2
期刊:Oncotarget
单位:北京大学医学部、国家教育部重点实验室、国家自然与仿生药物重点实验室
发表时间:2015年10月27日
DOI: 10.18632/oncotarget.5474
研究摘要:
Cyclooxygenase-2 (COX-2) is overexpressed in a variety of human epithelial cancers, including lung cancer, and is highly associated with a poor prognosis and a low survival rate. Understanding how COX-2 is regulated in response to carcinogens will offer insight into designing anti-cancer strategies and preventing cancer development. Here, we analyzed COX-2 expression in several human lung cancer cell lines and found that COX-2 expression was absent in the H719 and H460 cell lines by a DNA methylation-independent mechanism. The re-expression of COX-2 was observed after 12-O-tetradecanoylphorbol-13-acetate (TPA) treatment in both cell lines. Further investigation found that H3K36 dimethylation was significantly reduced near the COX-2 promoter because histone demethylase 2A (KDM2A) was recruited to the COX-2 promoter after TPA treatment. In addition, the transcription factor c-Fos was found to be required to recruit KDM2A to the COX-2 promoter for reactivation of COX-2 in response to TPA treatment in both the H719 and H460 cell lines. Together, our data reveal a novel mechanism by which the carcinogen TPA activates COX-2 expression by regulating H3K36 dimethylation near the COX-2 promoter.02
—
具体说明
参考信息
https://pubmed.ncbi.nlm.nih.gov/26430963/
https://pubpeer.com/publications/56D3E6DE32280313FAB0509C11F30C#0
本平台对于科研问题的探讨,始终保持严谨、深入、持续、开放和创新的态度。
所有推文信源,均来源于pubpeer、For Better Science等网站公开质疑。
我们从来没有、也永远不会主动查重论文并去pubpeer上质疑。
我们尊重他人的研究成果和贡献,通过交流和合作,共同推动科研领域的进步和
发展。