Combinatorial interference of toll-like receptor 2 and 4 synergistically stabilizes atherosclerotic plaque in apolipoprotein E-knockout mice.

Journal of Cellular and Molecular Medicine
Jian Min YangYun Zhang

Abstract

To test the hypothesis that combinatorial interference of toll-like receptor 2 (TLR2) and TLR4 is superior to isolated interference of TLR2 or TLR4 in stabilizing atherosclerotic plaques, lentiviruses carrying small interfering RNA of TLR2 or TLR4 were constructed and proved efficacious for knocking down mRNA and protein expression of TLR2 or TLR4 significantly in vitro. One hundred and fifty apolipoprotein E(-/-) mice fed a high-fat diet were divided into the control, mock, TLR2i, TLR4i and TLR2 + 4i subgroups and a constrictive collar was placed around carotid artery of these mice to induce plaque formation. TLR2i and TLR4i viral suspension was transfected into carotid plaques, respectively, in TLR2i and TLR4i subgroups, or in combination in TLR2 + 4i subgroup. Four weeks after lentivirus transfection, mRNA and protein expression of TLR2 or TLR4 was attenuated markedly in carotid plaques, leading to reduced local inflammatory cytokine expression and plaque content of lipid and macrophages, increased plaque content of collagen and lowered plaque vulnerability index. Factorial ANOVA analysis revealed that there was a synergistic effect between TLR4i and TLR2i in stabilizing plaques. In conclusion, combinatorial interference of ...Continue Reading

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Citations

Dec 26, 2015·Pharmacology & Therapeutics·Yu WangPaul M Vanhoutte
Apr 10, 2013·International Journal of Cardiology·Xiao MengYun Zhang
Sep 7, 2016·Mediators of Inflammation·Peng ZhangDongying Zhang
Jun 14, 2014·The Journal of International Medical Research·Shanshan XingQichong Xing
Jan 13, 2018·Arteriosclerosis, Thrombosis, and Vascular Biology·Prakash DoddapattarAnil K Chauhan

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Methods Mentioned

BETA
gene knockout
transfection
fluorescence microscopy
gene knockdown

Software Mentioned

SPSS
Image
Pro Plus

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