Mitochondrial fission determines cisplatin sensitivity in tongue squamous cell carcinoma through the BRCA1-miR-593-5p-MFF axis

Cisplatin has been widely employed as a cornerstone chemotherapy treatment for a wide spectrum of solid neoplasms; increasing tumor responsiveness to cisplatin has been a topic of interest for the past 30 years. Strong evidence has indicated that mitochondrial fission participates in the regulation of apoptosis in many diseases; however, whether mitochondrial fission regulates cisplatin sensitivity remains poorly understood. Here, we show that MFF mediated mitochondrial fission and apoptosis in tongue squamous cell carcinoma (TSCC) cells after cisplatin treatment and that miR-593-5p was downregulated in this process. miR-593-5p attenuated mitochondrial fission and cisplatin sensitivity by targeting the 3' untranslated region sequence of MFF and inhibiting its translation. In exploring the underlying mechanism of miR-593-5p downregulation, we observed that BRCA1 transactivated miR-593-5p expression and attenuated cisplatin sensitivity in vitro. The BRCA1-miR-593-5p-MFF axis also affected cisplatin sensitivity in vivo. Importantly, in a retrospective analysis of multiple centers, we further found that the BRCA1-miR-593-5p-MFF axis was significantly associated with cisplatin sensitivity and the survival of patients with TSCC. Together, our data reveal a model for mitochondrial fission regulation at the transcriptional and post-transcriptional levels; we also reveal a new pathway for BRCA1 in determining cisplatin sensitivity through the mitochondrial fission program.

Medienart:

E-Artikel

Erscheinungsjahr:

2015

Erschienen:

2015

Enthalten in:

Zur Gesamtaufnahme - volume:6

Enthalten in:

Oncotarget - 6(2015), 17 vom: 20. Juni, Seite 14885-904

Sprache:

Englisch

Beteiligte Personen:

Fan, Song [VerfasserIn]
Liu, Bodu [VerfasserIn]
Sun, Lijuan [VerfasserIn]
Lv, Xiao-bin [VerfasserIn]
Lin, Zhaoyu [VerfasserIn]
Chen, Weixiong [VerfasserIn]
Chen, Weiliang [VerfasserIn]
Tang, Qionglan [VerfasserIn]
Wang, Youyuan [VerfasserIn]
Su, Yuxiong [VerfasserIn]
Jin, Shaowen [VerfasserIn]
Zhang, Daming [VerfasserIn]
Zhong, Jianglong [VerfasserIn]
Li, Yilin [VerfasserIn]
Wen, Bin [VerfasserIn]
Zhang, Zhang [VerfasserIn]
Yang, Pu [VerfasserIn]
Zhou, Bin [VerfasserIn]
Liang, Qixiang [VerfasserIn]
Yu, Xing [VerfasserIn]
Zhu, Yinghua [VerfasserIn]
Hu, Pengnan [VerfasserIn]
Chu, Junjun [VerfasserIn]
Huang, Wei [VerfasserIn]
Feng, Yuhuan [VerfasserIn]
Peng, Hongzhuang [VerfasserIn]
Huang, Qihong [VerfasserIn]
Song, Erwei [VerfasserIn]
Li, Jinsong [VerfasserIn]

Themen:

Antineoplastic Agents
BRCA1
BRCA1 Protein
BRCA1 protein, human
Cisplatin
Cisplatin sensitivity
Journal Article
MFF
MIRN593 microRNA, human
Membrane Proteins
Mff protein, human
MiR-593-5p
MicroRNAs
Mitochondrial Proteins
Mitochondrial fission
Q20Q21Q62J
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 18.04.2016

Date Revised 13.11.2018

published: Print

Citation Status MEDLINE

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM248421980