Adiponectin-mediated antilipotoxic effects in regenerating pancreatic islets

Risheng Ye, Miao Wang, Qiong A. Wang, Philipp E. Scherer

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Pathways that stimulate β-cell regeneration remain of great clinical interest, yet effective therapeutic avenues that promote survival or reconstitution of β-cell mass remain elusive. Using a mouse model with inducible β-cell apoptosis followed by adiponectin-mediated regeneration, we aimed to identify key molecules boosting β-cell viability. In the regenerating pancreatic islets, we examined changes within the transcriptome and observed an extensive up-regulation of genes encoding proteins involved in lipid transport and metabolism. The most prominent targets were further confirmed by quantitative PCR and immunofluorescence. Among the upstream regulators predicted by pathway analysis of the transcriptome, we detected enhanced levels of 2 key transcription factors, Hepatocyte Nuclear Factor 4α and Peroxisome Proliferator-Activated Receptorα. Our data suggest that improving pancreatic islet lipid metabolism as an important antilipotoxic phenomenon to boost β-cell regeneration. This is primarily mediated by the adipokine adiponectin that exerts its action on both the beta-cell directly as well as on the adipocyte. Adiponectin induces lipid metabolism gene expression in regenerating islets through Hepatocyte Nuclear Factor 4α and Peroxisome Proliferator-Activated Receptorα. Adiponectin also modulates leptin levels via preserving adipose tissue mass in the insulinopenic state.

Original languageEnglish (US)
Pages (from-to)2019-2028
Number of pages10
JournalEndocrinology
Volume156
Issue number6
DOIs
StatePublished - Jun 1 2015

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Adiponectin
Islets of Langerhans
Hepatocyte Nuclear Factor 4
Lipid Metabolism
Regeneration
Peroxisome Proliferator-Activated Receptors
Adipokines
Gene Expression Profiling
Leptin
Transcriptome
Adipocytes
Fluorescent Antibody Technique
Adipose Tissue
Cell Survival
Transcription Factors
Up-Regulation
Apoptosis
Gene Expression
Polymerase Chain Reaction
Proteins

ASJC Scopus subject areas

  • Endocrinology

Cite this

Adiponectin-mediated antilipotoxic effects in regenerating pancreatic islets. / Ye, Risheng; Wang, Miao; Wang, Qiong A.; Scherer, Philipp E.

In: Endocrinology, Vol. 156, No. 6, 01.06.2015, p. 2019-2028.

Research output: Contribution to journalArticle

Ye, Risheng ; Wang, Miao ; Wang, Qiong A. ; Scherer, Philipp E. / Adiponectin-mediated antilipotoxic effects in regenerating pancreatic islets. In: Endocrinology. 2015 ; Vol. 156, No. 6. pp. 2019-2028.
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