Role of TLR4 and miR-155 in peripheral blood mononuclear cell-mediated inflammatory reaction in coronary slow flow and coronary arteriosclerosis patients.

Abstract:

BACKGROUND:To study the role of toll-like receptor 4 (TLR4) and MicroRNA-155 (miR-155) in the peripheral blood mononuclear cell (PBMC)-mediated inflammation in coronary slow flow (CSF) and coronary arteriosclerosis. METHODS:Patients were divided into acute coronary syndrome (ACS), stable angina pectoris (SAP), CSF, and healthy control (HC) groups. The isolated PBMCs were treated with lipopolysaccharide (LPS)/and antagomiR-155. TLR4, miR-155, and the concentrations of tumor necrosis factor (TNF)-α, interleukin (IL)-6, IL-1, and IL-10 were measured. RESULTS:Before LPS intervention, the TLR4, TNF-α, IL-1, and IL-6 levels were higher and the level of miR-155, IL-10 was lower in the ACS group compared with the SAP, CSF, and HC groups. After exposure to LPS, the levels of TLR4, miR-155, TNF-α, IL-1, and IL-6 were increased and the level of IL-10 was decreased in the SAP and CSF groups compared with the HC group. But when over-expressing antagomiR-155 into PBMCs from SAP and CSF groups, the miR-155 expression, and TNF-α, IL-6, and IL-1 secretion increase induced by LPS were restrained. CONCLUSIONS:TLR4, miR-155, and inflammatory cytokines may be closely related to ACS. LPS can induce TLR4, miR-155 expression and inflammatory response in SAP and CSF patients. AntagomiR-155 can inhibit this inflammatory response.

journal_name

J Clin Lab Anal

authors

Huang J,Yang Q,He L,Huang J

doi

10.1002/jcla.22232

subject

Has Abstract

pub_date

2018-02-01 00:00:00

issue

2

eissn

0887-8013

issn

1098-2825

journal_volume

32

pub_type

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