DFMG reverses proliferation and migration of vascular smooth muscle cells induced by co-culture with injured vascular endothelial cells via suppression of the TLR4-mediated signaling pathway.

Molecular Medicine Reports
Li CongXiaohua Fu

Abstract

7-Difluoromethoxy-5,4'-dimethoxy-genistein (DFMG) is a novel chemical compound synthesized using genistein. Previous studies have indicated that DFMG can reverse the apoptosis of vascular endothelial cells (VECs) by regulating the mitochondrial apoptosis pathway. The present study aimed to investigate the activity and molecular mechanism underlying DFMG‑mediated protection of vascular smooth muscle cell (VSMCs) using a non‑contact co‑culture model established by using Transwell insert. Secretion of interleukin‑6 (IL‑6) and tumor necrosis factor‑α (TNF‑α) were measured by ELISA. Proliferation and migration of VSMCs were assessed using a Cell Counting kit‑8 and wound healing assays, respectively. Toll‑like receptor 4 (TLR4) mRNA and protein levels were detected by reverse transcription-quantitative polymerase chain reaction and western blotting analyses, respectively. In the present study, lysophosphatidylcholine (LPC) significantly increased the secretion of IL‑6 and TNF‑α in VECs. VECs treated with LPC markedly increased proliferation and migration of VSMCs, which were inhibited by DFMG. Transfection of either TLR4 short hairpin RNA (shRNA) or TLR4 cDNA in VECs inhibited and increased proliferation and migration of VSMCs, respe...Continue Reading

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Citations

Apr 11, 2019·Frontiers in Cardiovascular Medicine·Shahida ShafiSihem Aouabdi

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Methods Mentioned

BETA
coronary artery bypass
GTPase
ELISA
transfection
protein assay

Software Mentioned

Adobe Photoshop
SPSS
Graph Pad Prism
GelPro

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