PMID- 32329931 OWN - NLM STAT- MEDLINE DCOM- 20210622 LR - 20231112 IS - 1098-2825 (Electronic) IS - 0887-8013 (Print) IS - 0887-8013 (Linking) VI - 34 IP - 8 DP - 2020 Aug TI - A long non-coding RNA OLBC15 promotes triple-negative breast cancer progression via enhancing ZNF326 degradation. PG - e23304 LID - 10.1002/jcla.23304 [doi] LID - e23304 AB - BACKGROUND: The long non-coding RNAs (lncRNAs) have been involved in various processes, including cancer. However, the function of many lncRNAs is still elusive in triple-negative breast cancer (TNBC). METHODS: LncRNA profiling was used to screen for novel lncRNAs related to TNBC. OLBC15 expression was measured via qRT-PCR. In vitro migration and viability assays were conducted to determine the oncogenic role of OLBC15. Xenograft and metastatic models were performed to further investigate effects in vivo. RNA immunoprecipitation (RIP), mass spectrometry (MS), and fluorescence in situ hybridization (FISH) strategies were designed to identify the interaction between ZNF326 and OLBC15. RESULTS: In the current study, we have identified a novel oncogenic lncRNA termed OLBC15 via lncRNA profiling. OLBC15 is highly expressed especially in triple-negative breast cancer. OLBC15 promoted viability and migration in breast cancer cells. Moreover, OLBC15 could accelerate metastasis and xenograft tumor growth. Mechanistic study suggested that OLBC15 could bind a well-characterized tumor suppressor ZNF326 and OLBC15-ZNF326 interaction resulted in ZNF326 destabilization. OLBC15 induced proteasomal ZNF326 degradation through enhanced ubiquitination. OLBC15 and ZNF326 protein expression is also negatively correlated in clinical specimens. CONCLUSIONS: Collectively, OLBC15 may serve as an oncogenic lncRNA to facilitate TNBC progression and a putative target for therapeutic anti-breast cancer intervention. CI - (c) 2020 The Authors. Journal of Clinical Laboratory Analysis published by Wiley Periodicals, Inc. FAU - Deng, Chao AU - Deng C AD - Department of Comprehensive Ward of Oncology, Chongqing Three Gorges Central Hospital, Chongqing, China. FAU - Zhang, Bojuan AU - Zhang B AD - Department of Comprehensive Ward of Oncology, Chongqing Three Gorges Central Hospital, Chongqing, China. FAU - Zhang, Yao AU - Zhang Y AD - Department of Comprehensive Ward of Oncology, Chongqing Three Gorges Central Hospital, Chongqing, China. FAU - Xu, Xiaogang AU - Xu X AD - Department of Comprehensive Ward of Oncology, Chongqing Three Gorges Central Hospital, Chongqing, China. FAU - Xiong, Deming AU - Xiong D AD - Department of Comprehensive Ward of Oncology, Chongqing Three Gorges Central Hospital, Chongqing, China. FAU - Chen, Xiaoyan AU - Chen X AD - Department of Comprehensive Ward of Oncology, Chongqing Three Gorges Central Hospital, Chongqing, China. FAU - Wu, Jiaojiao AU - Wu J AUID- ORCID: 0000-0001-5180-7929 AD - Department of Respiratory Ward of Radiotherapy, Chongqing Three Gorges Central Hospital, Chongqing, China. LA - eng GR - zdxk201919/Chongqing Regional Medical Key Discipline Construction Project/ PT - Journal Article DEP - 20200424 PL - United States TA - J Clin Lab Anal JT - Journal of clinical laboratory analysis JID - 8801384 RN - 0 (Carrier Proteins) RN - 0 (RNA, Long Noncoding) RN - 0 (ZNF326 protein, human) SB - IM MH - Breast/metabolism/pathology MH - *Carrier Proteins/genetics/metabolism MH - Cell Line, Tumor MH - Disease Progression MH - Female MH - Humans MH - *RNA, Long Noncoding/genetics/metabolism MH - *Triple Negative Breast Neoplasms/genetics/metabolism/pathology PMC - PMC7439339 OTO - NOTNLM OT - OLBC15 OT - ZNF326 OT - breast cancer OT - oncogenesis EDAT- 2020/04/25 06:00 MHDA- 2021/06/23 06:00 PMCR- 2020/04/24 CRDT- 2020/04/25 06:00 PHST- 2020/01/20 00:00 [received] PHST- 2020/02/21 00:00 [revised] PHST- 2020/02/23 00:00 [accepted] PHST- 2020/04/25 06:00 [pubmed] PHST- 2021/06/23 06:00 [medline] PHST- 2020/04/25 06:00 [entrez] PHST- 2020/04/24 00:00 [pmc-release] AID - JCLA23304 [pii] AID - 10.1002/jcla.23304 [doi] PST - ppublish SO - J Clin Lab Anal. 2020 Aug;34(8):e23304. doi: 10.1002/jcla.23304. Epub 2020 Apr 24.