Vol 60, No 2 (2022)
Original paper
Published online: 2022-06-22
MIR4435-2HG, miR-125b-5p, and Sema4D axis affects the aggressiveness of colorectal cancer cells
Abstract
Introduction. The purpose of this study is to elucidate the impact of long non-coding RNA (lncRNA) MIR4435-2HG/microRNA (miR)-125b-5p/ Semaphorins 4D (Sema4D) on colorectal cancer (CRC) cell propagation and migration.
Material and methods. Sema4D expression in 73 pairs of CRC tissues and matched adjacent normal tissues was measured by qRT-PCR and western blot and its association with pathological characteristics of CRC patients was analyzed by chi-square test. Also, the expression of MIR4435-2HG, miR-125b-5p and Sema4D in CRC cell lines was detected by qRT-PCR and Western blot. Knockdown or overexpression of MIR4435-2HG, miR-125b- 5p and Sema4D were separately performed in Caco-2 and LoVo cells, and the cell propagation, migration and invasiveness were detected by cell-counting kit 8, scratch, and transwell assays.
Results. LncRNA MIR4435-2HG and Sema4D were highly expressed, while miR-125b-5p expression was decreased in CRC tissues and cells. Knockdown of MIR4435-2HG/Sema4D or overexpression of miR-125b-5p inhibited CRC cell proliferation and aggressiveness; overexpression of MIR4435-2HG/Sema4D or knockdown of miR-125b-5p prompted the malignant behaviors of cancer cells. MIR4435-2HG and Sema4D competitively bound to miR-125b-5p.
Conclusions. LncRNA MIR4435-2HG targets miR-125b-5p to upregulate Sema4D expression, and thus regulates CRC cell propagation, migration and invasiveness.
Keywords: colorectal cancerhumanscell linesproliferationmigrationinvasionsurvival analysis
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