Glycation of HDL Polymerizes Apolipoprotein M and Attenuates Its Capacity to Bind to Sphingosine 1-Phosphate.
Apolipoprotein M
Glycation
HDL
Sphingosine 1-phosphate
Journal
Journal of atherosclerosis and thrombosis
ISSN: 1880-3873
Titre abrégé: J Atheroscler Thromb
Pays: Japan
ID NLM: 9506298
Informations de publication
Date de publication:
01 Jul 2021
01 Jul 2021
Historique:
pubmed:
2
10
2020
medline:
15
12
2021
entrez:
1
10
2020
Statut:
ppublish
Résumé
Recently, it has been established that most of the pleiotropic effects of high-density lipoprotein (HDL) are attributed to sphingosine 1-phosphate (S1P), which rides on HDL via apolipoprotein M (ApoM). In subjects with diabetes mellitus, both the pleiotropic effects of HDL and its role in reverse cholesterol transport are reported to be impaired. To elucidate the mechanisms underlying the impaired pleiotropic effects of HDL in subjects with diabetes, from the aspects of S1P and ApoM. The incubation of HDL in a high-glucose condition resulted in the dimerization of ApoM. Moreover, the treatment of HDL with methylglyoxal resulted in the modulation of the ApoM structure, as suggested by the results of western blot analysis, isoelectric focusing electrophoresis, and two-dimensional gel electrophoresis, which was reversed by treatment with anti-glycation reagents. The glycation of HDL resulted in impaired binding of the glycated HDL to S1P, and the S1P on glycated HDL degraded faster. In the case of human subjects, on the other hand, although both the serum ApoM levels and the ApoM content in HDL were lower in subjects with diabetes, we did not observe the polymerization of ApoM. Modulation of the quantity and quality of ApoM might explain, at least in part, the impaired functions of HDL in subjects with diabetes mellitus. ApoM might be a useful target for laboratory testing and/or the treatment of diabetes mellitus.
Identifiants
pubmed: 32999208
doi: 10.5551/jat.55699
pmc: PMC8265924
doi:
Substances chimiques
Apolipoproteins M
0
Lipoproteins, HDL
0
Lysophospholipids
0
glycated lipoproteins, HDL
0
sphingosine 1-phosphate
26993-30-6
Sphingosine
NGZ37HRE42
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
730-741Références
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