Experimental Study
Long non-coding RNA HOX antisense intergenic RNA affects the biological behavior of esophageal cancer cells by affecting the expression of microRNA-101
Mao Guangxian, Lu Jianjun, Liu Jixian
Published 2018-12-08
Cite as Chin J Exp Surg, 2018,35(12): 2286-2288. DOI: 10.3760/cma.j.issn.1001-9030.2018.12.034
Abstract
ObjectiveTo explore the expression of long non-coding RNA (lncRNA) HOX antisense intergenic RNA (HOTAIR) in esophageal cancer and its influence on celluar biology.
MethodsReal-time fluorescent quantitative polymerase chain reaction (FQ-PCR) of lncRNA HOTAIR expression in esophageal cancer tissue and adjacent normal tissue, cell counting kit-8 (CCK-8) experiment to detect the effect of lncRNA HOTAIR on esophageal cancer cells proliferation ability, Transwell assay was used to detect the effect of lncRNA HOTAIR on the invasion of esophageal cancer cells, flow cytometry was used to detect the effect of lncRNA HOTAIR on the apoptosis of esophageal cancer cells. In vivo experiments, we used nude mice to examine the effect of lncRNA HOTAIR on the tumorigenesis of esophageal cancer cell. Dual luciferase assay validated the interaction between lncRNA HOTAIR and microRNA (miRNA, miR)-101.
ResultsThe expression of lncRNA HOTAIR in esophageal cancer tissues was significantly higher than that in adjacent normal tissues [(1.95±0.12) vs. (1.25±0.13), P=0.031]. LncRNA HOTAIR could promote the proliferation and invasion of esophageal cancer cells [(118.4±7.5) vs. (52.0±6.2), P=0.021], and inhibit the apoptosis of esophageal cancer cells [(126.4±13.4) vs. (75.6±8.7), P=0.008]. Down-regulation of lncRNA HOTAIR attenuated the proliferation of cells in nude mice volume [(0.5±0.1) cm3 vs. (2.0±0.3) cm3,P=0.016], weight [(0.6±0.2) g vs. (1.5±0.2) g, P=0.022]. miR-101 could directly bind to the lncRNA HOTAIR and affect luciferase activity.
ConclusionLncRNA HOTAIR promotes the malignant biological behavior of esophageal cancer cells by regulating the expression of miR-101.
Key words:
Long non-coding RNA HOX antisense intergenic RNA; Esophageal cancer; Proliferation; Invasion; Apoptosis; MicroRNA-101
Contributor Information
Mao Guangxian
Department of Thoracic Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, 518036, China
Lu Jianjun
Department of Thoracic Surgery, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China
Liu Jixian
Department of Thoracic Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, 518036, China