國家衛生研究院 NHRI:Item 3990099045/12722
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    题名: lncRNA UBA6-AS1 participates in the integrated stress response of breast cancer
    作者: Wu, YZ;Chen, YH;Cheng, CT;Chi, KV;Kuo, TC;Kung, HJ;Ann, DK;Kuo, CY
    贡献者: Institute of Molecular and Genomic Medicine
    摘要: lncRNA, UBA6-AS1, was identified to be upregulated to promote breast cancer cell death upon glucose deprivation. Besides of glucose deprivation, UBA6-AS1 was also induced by the deprivation of amino acids including glutamine and arginine in several breast cancer cell lines, suggesting that the upregulation of UBA6-AS1 was a universal metabolic stress event. We also found that UBA6-AS1 expression was increased upon the administration of ER stress inducers, tunicamycin (Tm) and thapsigargin (Tg) in breast cancer cells, implicating a potential role of UBA6-AS1 in harmonizing the nutrient and ER stresses. Moreover, after analyzing the genomic position and sequence of UBA6-AS1, activating transcription factor 4 (ATF4), a critical regulator in the ISR coordinating nutrient and ER stress signaling for controlling cell survival and stress adaption, has been predicted to be the regulator of UBA6-AS1 upon the induction of nutrient stress, further supporting the role of UBA6-AS1 participating in the ISR of breast cancer cells. Depletion of UBA6-AS1 rendered breast cancer cells more resistant to nutrient deprivation, and the opposite results were observed when UBA6-AS1 was overexpressed, indicating that UBA6-AS1 may participate in the regulation of breast cancer cell survival under metabolic stress. To investigate the function of UBA6-AS1, RNA-sequencing (RNA-seq) was performed to profile gene expression in breast cancer cells overexpressing UBA6-AS1. The RNA-seq analysis revealed that the top 10 enriched biological processes were mostly related to apoptosis or programmed cell death in the UBA6-AS1 overexpressing cells, suggesting that the up-regulation of UBA6-AS1 may induce apoptosis in response to metabolic stress. In the future, we will focus on the molecular mechanism of the regulation and function of UBA6-AS1 as well as its biological role and association with breast cancer progression.
    日期: 2020-02
    關聯: Cancer Research. 2020 Feb;80(4, Suppl.):Meeting Abstract P1-05-10.
    Link to: http://dx.doi.org/10.1158/1538-7445.Sabcs19-p1-05-10
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0008-5472&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000527012500210
    显示于类别:[龔行健] 期刊論文

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