The human T-cell leukemia virus type-1 p30(II) protein activates p53 and induces the TIGAR and suppresses oncogene-induced oxidative stress during viral carcinogenesis.
The human T-cell leukemia virus type-1 p30(II) protein activates p53 and induces the TIGAR and suppresses oncogene-induced oxidative stress during viral carcinogenesis.
复制标题
DOI:
10.1016/j.virol.2018.02.010
复制
发表时间:
2018-05
期刊:
影响因子:
3.7
通讯作者:
Harrod R
中科院分区:
文献类型:
--
作者:
Romeo M;Hutchison T;Malu A;White A;Kim J;Gardner R;Smith K;Nelson K;Bergeson R;McKee R;Harrod C;Ratner L;Lüscher B;Martinez E;Harrod R
In normal cells, aberrant oncogene expression leads to the accumulation of cytotoxic metabolites, including reactive oxygen species (ROS), which can cause oxidative DNA-damage and apoptosis as an intrinsic barrier against neoplastic disease. The c-Myc oncoprotein is overexpressed in many lymphoid cancers due to c-myc gene amplification and/or 8q24 chromosomal translocations. Intriguingly, p53 is a downstream target of c-Myc and hematological malignancies, such as adult T-cell leukemia/lymphoma (ATL), frequently contain wildtype p53 and c-Myc overexpression. We therefore hypothesized that p53-regulated pro-survival signals may thwart the cell’s metabolic anticancer defenses to support oncogene-activation in lymphoid cancers. Here we show that the Tp53-induced glycolysis and apoptosis regulator (TIGAR) promotes c-myc oncogene-activation by the human T-cell leukemia virus type-1 (HTLV-1) latency-maintenance factor p30II, associated with c-Myc deregulation in ATL clinical isolates. TIGAR prevents the intracellular accumulation of c-Myc-induced ROS and inhibits oncogene-induced cellular senescence in ATL, acute lymphoblastic leukemia, and multiple myeloma cells with elevated c-Myc expression. Our results allude to a pivotal role for p53-regulated antioxidant signals as mediators of c-Myc oncogenic functions in viral and non-viral lymphoid tumors.
登录
查看更多内容
影响因子:
11.4
作者:
Bensaad, Karim;Cheung, Eric C.;Vousden, Karen H.
通讯作者:
Vousden, Karen H.
影响因子:
7.5
作者:
Kanungo, A;Medeiros, LJ;Lin, P
通讯作者:
Lin, P
影响因子:
64.5
作者:
ELDEIRY, WS;TOKINO, T;VOGELSTEIN, B
通讯作者:
VOGELSTEIN, B
影响因子:
16
作者:
Chen, Delin;Kon, Ning;Zhong, Jiayun;Zhang, Pingzhao;Yu, Long;Gu, Wei
通讯作者:
Gu, Wei
影响因子:
7.7
作者:
Frank, SR;Parisi, T;Amati, B
通讯作者:
Amati, B