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Lethal giant larvae 1 inhibits smooth muscle calcification via high mobility group box 1.
- Source :
-
Journal of Molecular & Cellular Cardiology . May2020, Vol. 142, p39-52. 14p. - Publication Year :
- 2020
-
Abstract
- Vascular calcification is a pathological process closely related to atherosclerosis, diabetic vascular diseases, vascular injury, hypertension, chronic kidney disease and aging. Lethal giant larvae 1 (LGL1) is known as a key regulator of cell polarity and plays an important role in tumorigenesis. However, whether LGL1 regulates vascular calcification remains unclear. In this study, we generated smooth muscle-specific LGL1 knockout (LGL1SMKO) mice by cross-breeding LGL1flox/flox mice with α-SMA-Cre mice. LGL1 level was significantly decreased during calcifying conditions. Overexpression of LGL1 restrained high phosphate-induced calcification in vascular smooth muscle cells (VSMCs). Mechanically, LGL1 could bind with high mobility group box 1 (HMGB1) and promote its degradation via the lysosomal pathway, thereby inhibiting calcification. Smooth muscle-specific deletion of LGL1 increased HMGB1 level and aggravated vitamin D3-induced vascular calcification, which was attenuated by an HMGB1 inhibitor. LGL1 may inhibit vascular calcification by preventing osteogenic differentiation via promoting HMGB1 degradation. Unlabelled Image • The expression of LGL1 was decreased during calcifying conditions. • LGL1 inhibits smooth muscle calcification via HMGB1. • LGL1 binds with HMGB1 and promotes its degradation via the lysosomal pathway. • LGL1SMKO aggravates vitamin D-induced vascular calcification. • HMGB1 inhibitor attenuates aggravated vascular calcification in LGL1SMKO mice. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222828
- Volume :
- 142
- Database :
- Academic Search Index
- Journal :
- Journal of Molecular & Cellular Cardiology
- Publication Type :
- Academic Journal
- Accession number :
- 143659357
- Full Text :
- https://doi.org/10.1016/j.yjmcc.2020.03.017