We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Membrane type 1 matrix metalloproteinase promotes LDL receptor shedding and accelerates the development of atherosclerosis.
- Authors
Alabi, Adekunle; Xia, Xiao-Dan; Gu, Hong-Mei; Wang, Faqi; Deng, Shi-Jun; Yang, Nana; Adijiang, Ayinuer; Douglas, Donna N.; Kneteman, Norman M.; Xue, Yazhuo; Chen, Li; Qin, Shucun; Wang, Guiqing; Zhang, Da-Wei
- Abstract
Plasma low-density lipoprotein (LDL) is primarily cleared by LDL receptor (LDLR). LDLR can be proteolytically cleaved to release its soluble ectodomain (sLDLR) into extracellular milieu. However, the proteinase responsible for LDLR cleavage is unknown. Here we report that membrane type 1-matrix metalloproteinase (MT1-MMP) co-immunoprecipitates and co-localizes with LDLR and promotes LDLR cleavage. Plasma sLDLR and cholesterol levels are reduced while hepatic LDLR is increased in mice lacking hepatic MT1-MMP. Opposite effects are observed when MT1-MMP is overexpressed. MT1-MMP overexpression significantly increases atherosclerotic lesions, while MT1-MMP knockdown significantly reduces cholesteryl ester accumulation in the aortas of apolipoprotein E (apoE) knockout mice. Furthermore, sLDLR is associated with apoB and apoE-containing lipoproteins in mouse and human plasma. Plasma levels of sLDLR are significantly increased in subjects with high plasma LDL cholesterol levels. Thus, we demonstrate that MT1-MMP promotes ectodomain shedding of hepatic LDLR, thereby regulating plasma cholesterol levels and the development of atherosclerosis. Elevated plasma LDL cholesterol levels increase the risk of atherosclerotic cardiovascular disease. Here, the authors show that inhibition of MT1-MMP reduces plasma LDL cholesterol levels and the risk of atherosclerosis, indicating the potential of MT1-MMP inhibition as a lipid-lowering therapy.
- Subjects
LOW density lipoprotein receptors; ATHEROSCLEROSIS; LOW density lipoproteins; LIPOPROTEINS; KNOCKOUT mice; CHOLESTEROL; APOLIPOPROTEIN E; BLOOD lipoproteins
- Publication
Nature Communications, 2021, Vol 12, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-021-22167-3