Let-7 Sensitizes KRAS Mutant Tumor Cells to Chemotherapy.
Let-7 Sensitizes KRAS Mutant Tumor Cells to Chemotherapy.
复制标题
DOI:
10.1371/journal.pone.0126653
复制
发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
Tan C
中科院分区:
文献类型:
--
作者:
Dai X;Jiang Y;Tan C
KRAS is the most commonly mutated oncogene in human cancers and is associated with poor prognosis and drug resistance. Let-7 is a family of tumor suppressor microRNAs that are frequently suppressed in solid tumors, where KRAS mutations are highly prevalent. In this study, we investigated the potential use of let-7 as a chemosensitizer. We found that let-7b repletion selectively sensitized KRAS mutant tumor cells to the cytotoxicity of paclitaxel and gemcitabine. Transfection of let-7b mimic downregulated the expression of mutant but not wild-type KRAS. Combination of let-7b mimic with paclitaxel or gemcitabine diminished MEK/ERK and PI3K/AKT signaling concurrently, triggered the onset of apoptosis, and reverted the epithelial-mesenchymal transition in KRAS mutant tumor cells. In addition, let-7b repletion downregulated the expression of β-tubulin III and ribonucleotide reductase subunit M2, two proteins known to mediate tumor resistance to paclitaxel and gemcitabine, respectively. Let-7 may represent a new class of chemosensitizer for the treatment of KRAS mutant tumors.
登录
查看更多内容
影响因子:
3.7
作者:
Cihalova D;Hofman J;Ceckova M;Staud F
通讯作者:
Staud F
影响因子:
82.9
作者:
通讯作者:
--
影响因子:
21.3
作者:
Batlle, E;Sancho, E;de Herreros, AG
通讯作者:
de Herreros, AG
影响因子:
6.4
作者:
Lee, K. M.;Cao, D.;Ouellette, M. M.
通讯作者:
Ouellette, M. M.
影响因子:
8.8
作者:
Ali, S.;Saleh, H.;Sethi, S.;Sarkar, F. H.;Philip, P. A.
通讯作者:
Philip, P. A.