20 February 2017 : Laboratory Research
Long Non-Coding RNA Reprogramming (ROR) Promotes Cell Proliferation in Colorectal Cancer via Affecting P53
Hong Li1AE*, Xiumei Jiang1BCF, Xuemei Niu1DFDOI: 10.12659/MSM.903462
Med Sci Monit 2017; 23:919-928
Abstract
BACKGROUND: Colorectal cancer (CRC) remains one of the most common lethal malignant tumors worldwide. The correlation between lncRNAs expression and CRC development has not been well identified in the recent literature. This study focused on the role of lncRNA-ROR on CRC progression and development.
MATERIAL AND METHODS: Quantitative real-time PCR (qRT-PCR) assay was conducted to identify the expression level of lncRNA-ROR. Cell proliferation and viability were examined by MTT assay and colony formation assay. Cell cycle distribution and apoptosis were detected by flow cytometry. Expressions of p53, p21, and FAS protein levels were assessed by Western blotting. CRC cells transfected with lncRNA-shRNA were injection into nude mice to identify the function of lncRNA-ROR on tumorigenesis in vivo.
RESULTS: The expression level of lncRNA-ROR was elevated in CRC tissues when compared to adjacent tissues (n=78). lncRNA-ROR knockdown significantly suppressed cell proliferation and viability, while lncRNA-ROR overexpression had the opposite effect. Decreased lncRNA-ROR expression enhanced cell apoptosis and triggered cell cycle arrest in G0/G1 phase, while elevated lncRNA-ROR expression presented the opposite effect. Protein levels of p53 and p53 target genes were affected by lncRNA-ROR in vitro, and downregulation of lncRNA-ROR impeded tumorigenesis in vivo.
CONCLUSIONS: Our study demonstrates that lncRNA-ROR participates in controlling CRC proliferation, viability, and apoptosis, partially by modulating p53, which provides potential and prospective therapeutic targets for CRC.
Keywords: Colorectal Neoplasms, Genes, p53
Most Viewed Current Articles
13 Apr 2020 : Original article
Outcome of 24 Weeks of Combined Schroth and Pilates Exercises on Cobb Angle, Angle of Trunk Rotation, Chest...DOI :10.12659/MSMBR.920449
Med Sci Monit Basic Res 2020; 26:e920449
11 May 2020 : Original article
Analysis of Psychological and Sleep Status and Exercise Rehabilitation of Front-Line Clinical Staff in the ...DOI :10.12659/MSMBR.924085
Med Sci Monit Basic Res 2020; 26:e924085
05 Jan 2021 : Review article
A Southeast Asian Perspective on the COVID-19 Pandemic: Hemoglobin E (HbE)-Trait Confers Resistance Against...DOI :10.12659/MSMBR.929207
Med Sci Monit Basic Res 2021; 27:e929207
10 Aug 2020 : Clinical Research
Effects of Cognitive Task Training on Dynamic Balance and Gait of Patients with Stroke: A Preliminary Rando...DOI :10.12659/MSMBR.925264
Med Sci Monit Basic Res 2020; 26:e925264