PMID- 32910787 OWN - NLM STAT- MEDLINE DCOM- 20210419 LR - 20231207 IS - 1945-4589 (Electronic) IS - 1945-4589 (Linking) VI - 12 IP - 20 DP - 2020 Sep 10 TI - Long non-coding RNA DLEUI promotes papillary thyroid carcinoma progression by sponging miR-421 and increasing ROCK1 expression. PG - 20127-20138 LID - 10.18632/aging.103642 [doi] AB - We investigated the role of long non-coding RNA DLEU1 (deleted in lymphocytic leukemia 1) in the progression of papillary thyroid carcinoma (PTC). DLEU1 levels were higher in PTC cell lines (BHP5-16, TPC-1,8505C, and SW1736) and patient tissues (n=54) than in a human thyroid follicular epithelial cell line (Nthy-ori3-1) or adjacent normal thyroid tissues. High DLEU1 expression correlated positively with lymph node metastasis and advanced clinical stages in PTC patients. Bioinformatics, dual luciferase reporter, and RNA pulldown assays confirmed that DLEU1 directly binds to miR-421. Moreover, bioinformatics and dual luciferase reporter assays showed that miR-421 directly binds to the 3'untranslated region of the rho-related coiled-coil kinase 1 (ROCK1) in TPC-1 cells. PTC patient tissues and cell lines showed high ROCK1 mRNA and protein levels as well as low miR-421 levels. CCK-8, flow cytometry, wound healing, and Transwell invasion assays demonstrated that DLEU1 silencing decreases TPC-1 cell proliferation, survival and progression, but they can be rescued by miR-421 knockdown or ROCK1 overexpression. DLEU1 knockdown in TPC-1 cells decreased in vivo xenograft tumor size and weight compared to controls in nude mice. These findings demonstrate that DLEU1 promotes PTC progression by sponging miR-421 and increasing ROCK1 expression. FAU - Li, Rui AU - Li R AD - Department of Thyroid Surgery, The First Hospital of Jilin University, Changchun 130021, P.R. China. FAU - Wan, Taihu AU - Wan T AD - Department of Division of Interventional Radiology, China-Japan Union Hospital of Jilin University, Changchun 130033, China. FAU - Qu, Jie AU - Qu J AD - Department of VIP Unit, China-Japan Union Hospital of Jilin University, Changchun 130033, China. FAU - Yu, Yang AU - Yu Y AD - Department of General Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, China. FAU - Zheng, Ruipeng AU - Zheng R AD - Department of Interventional Therapy, The First Hospital of Jilin University, Changchun 130021, P.R. China. LA - eng PT - Journal Article DEP - 20200910 PL - United States TA - Aging (Albany NY) JT - Aging JID - 101508617 RN - 0 (MIRN421 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (RNA, Long Noncoding) RN - EC 2.7.11.1 (ROCK1 protein, human) RN - EC 2.7.11.1 (rho-Associated Kinases) SB - IM EIN - Aging (Albany NY). 2023 Jan 31;15(2):595-596. PMID: 36719851 MH - Animals MH - Cell Line, Tumor MH - Cell Movement MH - Cell Proliferation MH - Disease Progression MH - Female MH - Gene Expression Regulation, Neoplastic MH - Humans MH - Lymphatic Metastasis MH - Male MH - Mice, Nude MH - MicroRNAs/genetics/*metabolism MH - Middle Aged MH - Neoplasm Staging MH - RNA, Long Noncoding/genetics/*metabolism MH - Signal Transduction MH - Thyroid Cancer, Papillary/*enzymology/genetics/secondary MH - Thyroid Neoplasms/*enzymology/genetics/pathology MH - Tumor Burden MH - rho-Associated Kinases/genetics/*metabolism PMC - PMC7655200 OTO - NOTNLM OT - DLEU1 OT - ROCK1 OT - miR-421 OT - papillary thyroid carcinoma COIS- CONFLICTS OF INTEREST: The authors declare that there are no conflicts of interest. EDAT- 2020/09/11 06:00 MHDA- 2021/04/20 06:00 PMCR- 2020/10/31 CRDT- 2020/09/10 17:09 PHST- 2019/02/03 00:00 [received] PHST- 2020/06/22 00:00 [accepted] PHST- 2020/09/11 06:00 [pubmed] PHST- 2021/04/20 06:00 [medline] PHST- 2020/09/10 17:09 [entrez] PHST- 2020/10/31 00:00 [pmc-release] AID - 103642 [pii] AID - 10.18632/aging.103642 [doi] PST - ppublish SO - Aging (Albany NY). 2020 Sep 10;12(20):20127-20138. doi: 10.18632/aging.103642. Epub 2020 Sep 10.