Paclitaxel is not as effective for neuroblastoma as most of the front-line chemotherapeutics due to drug resistance. This study explored the regulatory mechanism of paclitaxel-associated autophagy and potential solutions to paclitaxel resistance in neuroblastoma. The formation of autophagic vesicles was detected by scanning transmission electron microscopy and flow cytometry. The autophagy-associated proteins were assessed by western blot. Autophagy was induced and the autophagy-associated proteins LC3-I, LC3-II, Beclin 1, and thioredoxin-related protein 14 (TRP14), were found to be upregulated in neuroblastoma cells that were exposed to paclitaxel. The inhibition of Beclin 1 or TRP14 by siRNA increased the sensitivity of the tumor cells to paclitaxel. In addition, Beclin 1-mediated autophagy was regulated by TRP14. Furthermore, the TRP14 inhibitor suberoylanilide hydroxamic acid (SAHA) downregulated paclitaxel-induced autophagy and enhanced the anticancer effects of paclitaxel in normal control cancer cells but not in cells with upregulated Beclin 1 and TRP14 expression. Our findings showed that paclitaxel-induced autophagy in neuroblastoma cells was regulated by TRP14 and that SAHA could sensitize neuroblastoma cells to paclitaxel by specifically inhibiting TRP14.
基金:
Science and Technology Planning Project of Guangdong Province, China [2012B031800460, 2013B021800069]
语种:
外文
被引次数:
WOS:
PubmedID:
中科院(CAS)分区:
出版当年[2017]版:
大类|2 区医学
小类|3 区肿瘤学
最新[2023]版:
大类|2 区医学
小类|2 区肿瘤学
第一作者:
第一作者机构:[1]State Key Lab Oncol South China, Guangzhou, Guangdong, Peoples R China;[2]Sun Yat Sen Univ, Dept Pediat Oncol, Ctr Canc, 651 Dongfeng Rd East, Guangzhou 510060, Guangdong, Peoples R China;[3]Collaborat Innovat Ctr Canc Med, Guangzhou, Guangdong, Peoples R China;
通讯作者:
通讯机构:[1]State Key Lab Oncol South China, Guangzhou, Guangdong, Peoples R China;[2]Sun Yat Sen Univ, Dept Pediat Oncol, Ctr Canc, 651 Dongfeng Rd East, Guangzhou 510060, Guangdong, Peoples R China;[3]Collaborat Innovat Ctr Canc Med, Guangzhou, Guangdong, Peoples R China;
推荐引用方式(GB/T 7714):
Zhen Zijun,Yang Kaibin,Ye Litong,et al.Suberoylanilide hydroxamic acid sensitizes neuroblastoma to paclitaxel by inhibiting thioredoxin-related protein 14-mediated autophagy[J].CANCER SCIENCE.2017,108(7):1485-1492.doi:10.1111/cas.13279.
APA:
Zhen, Zijun,Yang, Kaibin,Ye, Litong,You, Zhiyao,Chen, Rirong...&He, Youjian.(2017).Suberoylanilide hydroxamic acid sensitizes neuroblastoma to paclitaxel by inhibiting thioredoxin-related protein 14-mediated autophagy.CANCER SCIENCE,108,(7)
MLA:
Zhen, Zijun,et al."Suberoylanilide hydroxamic acid sensitizes neuroblastoma to paclitaxel by inhibiting thioredoxin-related protein 14-mediated autophagy".CANCER SCIENCE 108..7(2017):1485-1492