인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
개인구독
소속 기관이 없으신 경우, 개인 정기구독을 하시면 저렴하게
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지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
The p53 tumor suppressor exhibits antiviral activity. The viral replication is also inhibited by interferons (IFNs), cytokines that regulate immune genes via STAT transcription factors. The best studied interferons belong to the type I (e.g., IFNα1) and type II (IFNγ) groups. IFNα1 and IFNγ induce the phosphorylation of STAT1 at Tyr701. Previously, we reported that p53 activates SOCS1, a negative regulator of STAT1 phosphorylation. Based on this, we hypothesized that p53, by activating SOCS1, reduces the phosphorylation of STAT1 and attenuates the activation of genes stimulated either by IFNα1 or IFNγ. To test this hypothesis, we exposed p53-proficient and p53-deficient cells to p53 activators along with either IFNα1 or IFNγ. We then assessed STAT1 phosphorylation and the expression of interferon-regulated genes. Strong p53 activation reduced the STAT1 phosphorylation at Tyr701; however, it did not decrease the expression of most of the tested interferon-stimulated genes. On the contrary, IFNγ synergized with p53 to enhance CASP1, IFIT1 and IFIT3 expression. We conclude that the interactions between p53 and interferon-activated pathways are more complicated than initially expected, and their cooperation deserves further investigation. Moreover, we found that SOCS1 can be either up- or down-regulated by p53 depending on cell type and stress conditions.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.