A let-7b binding site SNP in the 3'-UTR of the Bcl-xL gene enhances resistance to 5-fluorouracil and doxorubicin in breast cancer cells.
A let-7b binding site SNP in the 3'-UTR of the Bcl-xL gene enhances resistance to 5-fluorouracil and doxorubicin in breast cancer cells.
复制标题
BCl-XL基因3'-UTR中的Let-7b结合位点SNP增强了乳腺癌细胞中对5-氟尿嘧啶和阿霉素的抗性。
DOI:
10.3892/ol.2015.2938
复制
发表时间:
2015-04
期刊:
影响因子:
2.9
通讯作者:
Lei X
中科院分区:
文献类型:
--
作者:
Wang T;Huang B;Guo R;Ma J;Peng C;Zu X;Tang H;Lei X
The development of acquired resistance to chemotherapy is a major obstacle in the successful treatment of cancer. In breast cancer cells, B-cell lymphoma-extra large (Bcl-xL) is involved in the development of resistance to various chemotherapeutic agents; therefore, preliminary biological prediction was performed to identify a putative binding site for let-7b in the 3′-untranslated region (UTR) of the Bcl-xL gene and a single nucleotide polymorphism (SNP) within this binding region. The present study investigated the association between the SNP rs3208684 A>C and chemotherapeutic agent resistance in breast cancer cells. The data indicated that let-7b negatively regulates the expression of Bcl-xL and appears to sensitize MCF-7 cells to the chemotherapeutic agents 5-fluorouracil (5-FU) and doxorubicin. Furthermore, the SNP rs3208684 A>C was demonstrated to enhance Bcl-xL protein expression by disrupting the binding of let-7b to the 3′-UTR of Bcl-xL and, in MCF-7 cells, overexpression of let-7b in the presence of a mutant Bcl-xL 3′-UTR (C allele) significantly increased 5-FU and doxorubicin resistance. Thus, the results of the present study demonstrate that the SNP rs3208684 A>C may upregulate Bcl-xL protein expression and enhance the resistance of the MCF-7 cells to 5-FU and doxorubicin by decreasing the binding of let-7b to the 3′-UTR of Bcl-xL.
登录
查看更多内容
影响因子:
64.8
作者:
Baek, Daehyun;Villen, Judit;Shin, Chanseok;Camargo, Fernando D.;Gygi, Steven P.;Bartel, David P.
通讯作者:
Bartel, David P.
影响因子:
11.2
作者:
Saetrom P;Biesinger J;Li SM;Smith D;Thomas LF;Majzoub K;Rivas GE;Alluin J;Rossi JJ;Krontiris TG;Weitzel J;Daly MB;Benson AB;Kirkwood JM;O'Dwyer PJ;Sutphen R;Stewart JA;Johnson D;Larson GP
通讯作者:
Larson GP
DOI:
10.1126/science.1215691
发表时间:
2012-04-13
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Djuranovic S;Nahvi A;Green R
通讯作者:
Green R
DOI:
10.3727/105221611x13176664479287
发表时间:
2011-01-01
期刊:
GENE EXPRESSION-THE JOURNAL OF LIVER RESEARCH
影响因子:
--
作者:
Majumder, Sarmila;Jacob, Samson T.
通讯作者:
Jacob, Samson T.
影响因子:
64.8
作者:
Lujambio A;Lowe SW
通讯作者:
Lowe SW