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RDM1 plays an oncogenic role in human lung adenocarcinoma cells.


ABSTRACT: RAD52 motif containing 1 (RDM1) is involved in DNA damage repair pathway and RDM1-/- cells increase sensitivity to cisplatin, a common chemotherapy drug. Lung cancer is the leading cause of cancer death worldwide. However, the role of RDM1 in lung cancer is unknown. Here, we find that the mRNA and protein expression levels of RDM1 are significantly increased in human lung tumors, especially in lung adenocarcinoma. The lung adenocarcinoma patients with higher mRNA expression of RDM1 show the worse clinical outcomes. Knockdown of RDM1 in lung adenocarcinoma cells reduces cell proliferation and promotes apoptosis, consistent with the role RDM1 in the overexpression experiments. Xenograft mouse model shows stable knockdown of RDM1 significantly inhibits lung adenocarcinoma tumor growth. These in vitro and in vivo results conclude that RDM1 plays an oncogenic role in human lung adenocarcinoma. Interestingly, P53/RAD51/RAD52 can be regulated by RDM1, and the negative regulation of P53 by RDM1 may be one of major mechanisms for RDM1 to accomplish its oncogenic functions in lung adenocarcinoma. Therefore, RDM1 may be a new target for the treatment of lung adenocarcinoma.

SUBMITTER: Tong L 

PROVIDER: S-EPMC6070564 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

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RDM1 plays an oncogenic role in human lung adenocarcinoma cells.

Tong Lu L   Liu Jian J   Yan Wangjun W   Cao Wenjiao W   Shen Shihui S   Li Kun K   Li Lei L   Niu Guoping G  

Scientific reports 20180801 1


RAD52 motif containing 1 (RDM1) is involved in DNA damage repair pathway and RDM1<sup>-/-</sup> cells increase sensitivity to cisplatin, a common chemotherapy drug. Lung cancer is the leading cause of cancer death worldwide. However, the role of RDM1 in lung cancer is unknown. Here, we find that the mRNA and protein expression levels of RDM1 are significantly increased in human lung tumors, especially in lung adenocarcinoma. The lung adenocarcinoma patients with higher mRNA expression of RDM1 sh  ...[more]

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