Department of Otolaryngology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No. 6, Beijing West Road, Huaian, 223300, Jiangsu, China.
Mol Biotechnol. 2022 Aug;64(8):888-901. doi: 10.1007/s12033-022-00469-1. Epub 2022 Feb 26.
Increasing evidence demonstrates that many long noncoding RNAs (lncRNAs) are implicated with the development of laryngeal squamous cell carcinoma (LSCC). As shown by bioinformatics analysis, lncRNA non-catalytic region of tyrosine kinase adaptor protein 1-antisense 1 (NCK1-AS1) is upregulated in tissues of head and neck squamous cell carcinoma. The study aimed to explore the role and mechanism of NCK1-AS1 in LSCC. NCK1-AS1 expression in LSCC cells was evaluated by reverse transcription qPCR. The viability, proliferation, invasion, migration, and apoptosis of LSCC cells with indicated transfection were evaluated by CCK-8 assays, Ethynyl deoxyuridine incorporation assays, Transwell assays, wound healing assays, and TUNEL assays, respectively. Subcellular fractionation assays were performed to evaluate the cellular distribution of NCK1-AS1 and NCK1. NCK1 protein level in LSCC cells with indicated transfection was quantified by western blotting. The binding relation between miR-137 and NCK1-AS1 (or NCK1) were determined using RNA immunoprecipitation assays and luciferase reporter assays. NCK1-AS1 was highly expressed in LSCC cell lines. NCK1-AS1 depletion suppressed LSCC cell viability, proliferation, invasion, and migration while enhancing cell apoptosis. NCK1, an adjacent gene of NCK1-AS1, is also highly expressed in LSCC cells and was positively regulated by NCK1-AS1. Moreover, NCK1-AS1 interact with miR-137 to upregulate NCK1 expression. NCK1 was the downstream target of miR-137 and was negatively correlated to miR-137. In addition, overexpressed NCK1 reversed the suppressive impact of NCK1-AS1 depletion on malignant behaviors of LSCC cells. NCK1-AS1 contributes to LSCC cellular behaviors by upregulating NCK1 via interaction with miR-137.
越来越多的证据表明,许多长非编码 RNA(lncRNA)与喉鳞状细胞癌(LSCC)的发展有关。生物信息学分析显示,酪氨酸激酶接头蛋白 1 反义 1(NCK1-AS1)的非催化区域在头颈部鳞状细胞癌组织中上调。本研究旨在探讨 NCK1-AS1 在 LSCC 中的作用和机制。通过逆转录 qPCR 评估 LSCC 细胞中 NCK1-AS1 的表达。通过 CCK-8 测定、Ethynyl deoxyuridine 掺入测定、Transwell 测定、划痕愈合测定和 TUNEL 测定分别评估指示转染的 LSCC 细胞的活力、增殖、侵袭、迁移和凋亡。进行亚细胞分馏测定以评估 NCK1-AS1 和 NCK1 的细胞分布。通过 Western blot 定量指示转染的 LSCC 细胞中的 NCK1 蛋白水平。使用 RNA 免疫沉淀测定和荧光素酶报告测定确定 miR-137 与 NCK1-AS1(或 NCK1)之间的结合关系。NCK1-AS1 在 LSCC 细胞系中高表达。NCK1-AS1 耗竭抑制 LSCC 细胞活力、增殖、侵袭和迁移,同时增强细胞凋亡。NCK1-AS1 的邻近基因 NCK1 在 LSCC 细胞中也高表达,并受 NCK1-AS1 正向调节。此外,NCK1-AS1 与 miR-137 相互作用以上调 NCK1 表达。NCK1 是 miR-137 的下游靶标,与 miR-137 呈负相关。此外,过表达 NCK1 逆转了 NCK1-AS1 耗竭对 LSCC 细胞恶性行为的抑制作用。NCK1-AS1 通过与 miR-137 相互作用上调 NCK1 促进 LSCC 细胞行为。