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Insulin resistance in apolipoprotein M knockout mice is mediated by the protein kinase akt signaling pathway

Yao, Shuang ; Zhang, Jun ; Zhan, Yuxia ; Shi, Yuanping ; Yu, Yang ; Zheng, Lu ; Xu, Ning LU and Luo, Guanghua (2020) In Endocrine, Metabolic & Immune Disorders - Drug Targets 20(5). p.771-780
Abstract

Background: Previous clinical studies have suggested that apolipoprotein M (apoM) is involved in glucose metabolism and plays a causative role in insulin sensitivity. Objective: The potential mechanism of apoM on modulating glucose homeostasis is explored and differentially expressed genes are analyzed by employing ApoM deficient (ApoM-/-) and wild type (WT) mice. Methods: The metabolism of glucose in the hepatic tissues of high-fat diet ApoM-/- and WT mice was measured by a glycomics approach. Bioinformatic analysis was applied for analyzing the levels of differentially expressed mRNAs in the liver tissues of these mice. The insulin sensitivity of ApoM-/- and WT mice was compared using the insulin... (More)

Background: Previous clinical studies have suggested that apolipoprotein M (apoM) is involved in glucose metabolism and plays a causative role in insulin sensitivity. Objective: The potential mechanism of apoM on modulating glucose homeostasis is explored and differentially expressed genes are analyzed by employing ApoM deficient (ApoM-/-) and wild type (WT) mice. Methods: The metabolism of glucose in the hepatic tissues of high-fat diet ApoM-/- and WT mice was measured by a glycomics approach. Bioinformatic analysis was applied for analyzing the levels of differentially expressed mRNAs in the liver tissues of these mice. The insulin sensitivity of ApoM-/- and WT mice was compared using the insulin tolerance test and the phosphorylation levels of protein kinase Akt (AKT) and insulin stimulation in different tissues were examined by Western blot. Results: The majority of the hepatic glucose metabolites exhibited lower concentration levels in the ApoM-/- mice compared with those of the WT mice. Gene Ontology (GO) classification and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis indicated that ApoM deficiency affected the genes associated with the metabolism of glucose. The insulin tolerance test suggested that insulin sensitivity was impaired in ApoM-/- mice. The phosphorylation levels of AKT in muscle and adipose tissues of ApoM-/- mice were significantly diminished in response to insulin stimulation compared with those noted in WT mice. Conclusion: ApoM deficiency led to the disorders of glucose metabolism and altered genes related to glucose metabolism in mice liver. In vivo data indicated that apoM might augment insulin sensitivity by AKT-dependent mechanism.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Apolipoprotein M, Glucose metabolism, Insulin resistance, Microarray, Protein kinase akt phosphorylation, Type 2 diabetes
in
Endocrine, Metabolic & Immune Disorders - Drug Targets
volume
20
issue
5
pages
10 pages
publisher
Bentham Science Publishers
external identifiers
  • scopus:85085960979
  • pmid:31702495
ISSN
1871-5303
DOI
10.2174/1871530319666191023125820
language
English
LU publication?
yes
id
3cf351e2-7929-42ea-87f4-502d08d58128
date added to LUP
2021-01-15 08:25:43
date last changed
2022-08-04 03:56:04
@article{3cf351e2-7929-42ea-87f4-502d08d58128,
  abstract     = {{<p>Background: Previous clinical studies have suggested that apolipoprotein M (apoM) is involved in glucose metabolism and plays a causative role in insulin sensitivity. Objective: The potential mechanism of apoM on modulating glucose homeostasis is explored and differentially expressed genes are analyzed by employing ApoM deficient (ApoM<sup>-/-</sup>) and wild type (WT) mice. Methods: The metabolism of glucose in the hepatic tissues of high-fat diet ApoM<sup>-/-</sup> and WT mice was measured by a glycomics approach. Bioinformatic analysis was applied for analyzing the levels of differentially expressed mRNAs in the liver tissues of these mice. The insulin sensitivity of ApoM<sup>-/-</sup> and WT mice was compared using the insulin tolerance test and the phosphorylation levels of protein kinase Akt (AKT) and insulin stimulation in different tissues were examined by Western blot. Results: The majority of the hepatic glucose metabolites exhibited lower concentration levels in the ApoM<sup>-/-</sup> mice compared with those of the WT mice. Gene Ontology (GO) classification and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis indicated that ApoM deficiency affected the genes associated with the metabolism of glucose. The insulin tolerance test suggested that insulin sensitivity was impaired in ApoM<sup>-/-</sup> mice. The phosphorylation levels of AKT in muscle and adipose tissues of ApoM<sup>-/-</sup> mice were significantly diminished in response to insulin stimulation compared with those noted in WT mice. Conclusion: ApoM deficiency led to the disorders of glucose metabolism and altered genes related to glucose metabolism in mice liver. In vivo data indicated that apoM might augment insulin sensitivity by AKT-dependent mechanism.</p>}},
  author       = {{Yao, Shuang and Zhang, Jun and Zhan, Yuxia and Shi, Yuanping and Yu, Yang and Zheng, Lu and Xu, Ning and Luo, Guanghua}},
  issn         = {{1871-5303}},
  keywords     = {{Apolipoprotein M; Glucose metabolism; Insulin resistance; Microarray; Protein kinase akt phosphorylation; Type 2 diabetes}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{771--780}},
  publisher    = {{Bentham Science Publishers}},
  series       = {{Endocrine, Metabolic & Immune Disorders - Drug Targets}},
  title        = {{Insulin resistance in apolipoprotein M knockout mice is mediated by the protein kinase akt signaling pathway}},
  url          = {{http://dx.doi.org/10.2174/1871530319666191023125820}},
  doi          = {{10.2174/1871530319666191023125820}},
  volume       = {{20}},
  year         = {{2020}},
}