单位:[1]State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085, China[2]College of Resources and Environment University of Chinese Academy of Sciences Beijing 100049, China[3]Liver Research Center Beijing Friendship Hospital Capital Medical University Beijing 100050, China临床科室国家中心肝病分中心首都医科大学附属北京友谊医院[4]Key Labora tory of Ion Beam Bioengineering Hefei Institutes of Physical Science Chinese Academy of Sciences and Anhui Province Hefei, Anhui 230031, China
Although cadmium (Cd)-induced hepatoxicity is well established, pronounced knowledge gaps remain existed regarding the inherent cellular signaling that dictates Cd toxicity. Specifically, the molecular basis for determining the equilibrium between prosurvival and proapoptotic signaling remains poorly understood. Thus, it is recently revealed that long non-coding RNA (lncRNA) MT1DP, a pseudogene in the metallothionein (MT) family, promoted Cd-induced cell death through activating the RhoC-CCN1/2-AKT pathway and modulating MT1H induction. Here, first the dependency of MT1DP induction on MTF1, an important transcriptional factor in driving the mRNA expression of MT1 members is defined. Additionally, a bridge molecule between MT1DP and nuclear factor erythroid 2-related factor 2 (Nrf2) is established: miR-365. Mechanistically, MT1DP induction under Cd stress decreases the nuclear factor erythroid 2-related factor 2 (Nrf2) level to evoke oxidative stress through the elevation of miR-365, which acted to repress the Nrf2 level via direct binding to its 3'UTR. In contrast to the competing endogenous RNA (ceRNA) mechanism, a new mechanism is proposed: MT1DP elevated the miR-365 level though stabilizing its RNA via direct binding. Collectively, the combined data demonstrate a crucial role of MT1DP in reducing the Nrf2-mediated protection of cells, and this is dependent on the interplay with miR-365. Hence, the study further expands the knowledge of inducible endogenous lncRNA in modulating oxidative stress.
基金:
Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDB14000000]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21507154, 21425731, 21637004, 81570542]; national "973" programNational Basic Research Program of China [2014CB932000]
第一作者单位:[1]State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085, China[2]College of Resources and Environment University of Chinese Academy of Sciences Beijing 100049, China
通讯作者:
通讯机构:[1]State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085, China[2]College of Resources and Environment University of Chinese Academy of Sciences Beijing 100049, China
推荐引用方式(GB/T 7714):
Gao Ming,Li Changying,Xu Ming,et al.LncRNA MT1DP Aggravates Cadmium-Induced Oxidative Stress by Repressing the Function of Nrf2 and is Dependent on Interaction with miR-365[J].ADVANCED SCIENCE.2018,5(7):doi:10.1002/advs.201800087.
APA:
Gao, Ming,Li, Changying,Xu, Ming,Liu, Yun,Cong, Min&Liu, Sijin.(2018).LncRNA MT1DP Aggravates Cadmium-Induced Oxidative Stress by Repressing the Function of Nrf2 and is Dependent on Interaction with miR-365.ADVANCED SCIENCE,5,(7)
MLA:
Gao, Ming,et al."LncRNA MT1DP Aggravates Cadmium-Induced Oxidative Stress by Repressing the Function of Nrf2 and is Dependent on Interaction with miR-365".ADVANCED SCIENCE 5..7(2018)