PMID- 31837057 OWN - NLM STAT- MEDLINE DCOM- 20210224 LR - 20210224 IS - 1098-2825 (Electronic) IS - 0887-8013 (Print) IS - 0887-8013 (Linking) VI - 34 IP - 4 DP - 2020 Apr TI - The implication of LncRNA MALAT1 in promoting chemo-resistance of laryngeal squamous cell carcinoma cells. PG - e23116 LID - 10.1002/jcla.23116 [doi] LID - e23116 AB - BACKGROUND: This study was aimed to evaluate the involvement of lncRNA MALAT1 in modifying chemo-sensitivity of laryngeal squamous cell carcinoma (LSCC) cell lines. METHODS: Totally 108 pairs of tumor tissues and matched para-tumor normal tissues were gathered from patients who were pathologically confirmed as LSCC. Meanwhile, LSCC cell lines, including TU686, TU177, AMC-HN-8, and LSC-1, were purchased to evaluate their tolerance to cisplatin, 5-fluorouracil, paclitaxel, and vincristine. Additionally, CCK-8 assay, flow cytometry, transwell assay, and wound healing assay were implemented to assess the part of MALAT1 in modulating viability, apoptosis, invasion, and migration of LSCC cell lines. RESULTS: MALAT1 expression was higher in LSCC tissues than in adjacent normal tissues (P < .05), and LSCC patients who carried highly expressed MALAT1 demonstrated poorer 5-year survival than ones with low MALAT1 expression (P < .05). For another, expression of MALAT1 was also unusually elevated within TU686, TU177, AMC-HN-8, and LSC-1 cell lines as relative to NHBEC cell line (P < .05). The TU686 cell line therein excelled in resisting the growth-curbing effects of 5-fluorouracil (IC50 = 20.44 mumol/L), paclitaxel (IC50 = 35.86 mug/L), and vincristine (IC50 = 0.12 mumol/L), when compared with TU177, AMC-HN-8, and LSC-1 cell line (P < .05). Moreover, there seemed great potential for over-expressed MALAT1 to enhance the chemo-resistance of both TU686 and LSC-1 cell lines (P < .05). Not only that, silencing of MALAT1 tended to undermine the proliferative and metastatic power of TU686 and LSC-1 cell lines (P < .05). CONCLUSION: LncRNA MALAT1 counted in triggering tolerance of LSCC against chemo-drugs by boosting metastasis and depressing apoptosis of tumor cells. CI - (c) 2019 The Authors. Journal of Clinical Laboratory Analysis published by Wiley Periodicals, Inc. FAU - Jiang, Qining AU - Jiang Q AD - Department of Radiotherapy, Guizhou Cancer Hospital & The Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, China. FAU - Liu, Shiying AU - Liu S AD - Department of Radiotherapy, Guizhou Cancer Hospital & The Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, China. FAU - Hou, Linna AU - Hou L AD - Department of Radiotherapy, Guizhou Cancer Hospital & The Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, China. FAU - Guan, Yanfei AU - Guan Y AD - Department of Otolaryngology-Head and Neck Surgery, The First People's Hospital of Yunnan Province, Kunming, China. FAU - Yang, Shenggang AU - Yang S AUID- ORCID: 0000-0001-5643-5212 AD - Department of Radiotherapy, Yunnan Cancer Hospital & The Third Affiliated Hospital of Kunming Medical University, Kunming, China. FAU - Luo, Zhengyong AU - Luo Z AD - Department of Oncology, Puer People's Hospital, Puer, China. LA - eng PT - Journal Article DEP - 20191214 PL - United States TA - J Clin Lab Anal JT - Journal of clinical laboratory analysis JID - 8801384 RN - 0 (MALAT1 long non-coding RNA, human) RN - 0 (RNA, Long Noncoding) SB - IM MH - Apoptosis/drug effects/genetics MH - Cell Line, Tumor MH - Cell Movement/genetics MH - Drug Resistance, Neoplasm/*genetics MH - Female MH - Gene Expression Regulation, Neoplastic MH - Humans MH - Laryngeal Neoplasms/*drug therapy/genetics/mortality MH - Male MH - Middle Aged MH - RNA, Long Noncoding/*genetics MH - Squamous Cell Carcinoma of Head and Neck/*drug therapy/genetics/mortality PMC - PMC7171298 OTO - NOTNLM OT - LncRNA MALAT1 OT - chemo-sensitivity OT - epithelial-mesenchymal transition OT - laryngeal squamous cell carcinoma EDAT- 2019/12/15 06:00 MHDA- 2021/02/25 06:00 PMCR- 2019/12/14 CRDT- 2019/12/15 06:00 PHST- 2019/09/17 00:00 [received] PHST- 2019/10/17 00:00 [revised] PHST- 2019/10/21 00:00 [accepted] PHST- 2019/12/15 06:00 [pubmed] PHST- 2021/02/25 06:00 [medline] PHST- 2019/12/15 06:00 [entrez] PHST- 2019/12/14 00:00 [pmc-release] AID - JCLA23116 [pii] AID - 10.1002/jcla.23116 [doi] PST - ppublish SO - J Clin Lab Anal. 2020 Apr;34(4):e23116. doi: 10.1002/jcla.23116. Epub 2019 Dec 14.