Identification and characterization of a novel gene Saf transcribed from the opposite strand of Fas

Ming D. Yan, Chih Chen Hong, Gi Ming Lai, Ann L. Cheng, Ya W. Lin, Shuang E. Chuang

研究成果: 雜誌貢獻文章

75 引文 斯高帕斯(Scopus)

摘要

Apoptosis is a morphologically distinct form of cell death involved in many physiological and pathological processes. The regulation of Fas/Apo-1 involved in membrane-mediated apoptosis has also been known to play crucial roles in many systems. More and more naturally occurring antisense RNAs are now known to regulate, at least in part, a growing number of eukaryotic genes. In this report, we describe the findings of a novel RNA transcribed from the opposite strand of the intron 1 of the human Fas gene. Using orientation-specific RT-PCR and northern blot analysis, we show that this transcript is 1.5 kb in length and was expressed in several human tissues and cell lines. This transcript was cloned by 5′- and 3′-RACE (rapid amplification of cDNA ends) and the transcription start site was determined by primer extension. This novel gene was named Saf. To assess the functions of Saf, Jurkat cells transfected with human Saf or control vector was prepared. The stable Saf-transfectant was highly resistant to Fas-mediated but not to TNF-α-mediated apoptosis. Although the overall mRNA expression level of Fas was not affected, expression of some novel forms of Fas transcripts was increased in Saf-transfectant, especially the inhibitory soluble forms. These findings collectively suggest that Saf might protect T lymphocytes from Fas-mediated apoptosis by blocking the binding of FasL or its agonistic Fas antibody. Saf might regulate the expression of Fas alternative splice forms through pre-mRNA processing.

原文英語
頁(從 - 到)1465-1474
頁數10
期刊Human Molecular Genetics
14
發行號11
DOIs
出版狀態已發佈 - 六月 1 2005
對外發佈Yes

ASJC Scopus subject areas

  • Genetics

指紋 深入研究「Identification and characterization of a novel gene Saf transcribed from the opposite strand of Fas」主題。共同形成了獨特的指紋。

  • 引用此