Article ; Online: A guanidine-rich regulatory oligodeoxynucleotide improves type-2 diabetes in obese mice by blocking T-cell differentiation.
2012 Volume 4, Issue 10, Page(s) 1112–1125
Abstract: T lymphocytes exhibit pro-inflammatory or anti-inflammatory activities in obesity and diabetes ... without affecting Th2 and regulatory T cells. ODNR01 improves glucose tolerance and insulin sensitivity in both diet ... and insulin sensitivity in CD4(+) T-cell-reconstituted Rag1-deficient DIO mice, suggesting ...
Abstract | T lymphocytes exhibit pro-inflammatory or anti-inflammatory activities in obesity and diabetes, depending on their subtypes. Guanidine-rich immunosuppressive oligodeoxynucleotides (ODNs) effectively control Th1/Th2-cell counterbalance. This study reveals a non-toxic regulatory ODN (ODNR01) that inhibits Th1- and Th17-cell polarization by binding to STAT1/3/4 and blocking their phosphorylation without affecting Th2 and regulatory T cells. ODNR01 improves glucose tolerance and insulin sensitivity in both diet-induced obese (DIO) and genetically generated obese (ob/ob) mice. Mechanistic studies show that ODNR01 suppresses Th1- and Th17-cell differentiation in white adipose tissue, thereby reducing macrophage accumulation and M1 macrophage inflammatory molecule expression without affecting M2 macrophages. While ODNR01 shows no effect on diabetes in lymphocyte-free Rag1-deficient DIO mice, it enhances glucose tolerance and insulin sensitivity in CD4(+) T-cell-reconstituted Rag1-deficient DIO mice, suggesting its beneficial effect on insulin resistance is T-cell-dependent. Therefore, regulatory ODNR01 reduces obesity-associated insulin resistance through modulation of T-cell differentiation. |
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MeSH term(s) | Animals ; Cell Differentiation/drug effects ; Diabetes Mellitus, Type 2/drug therapy ; Disease Models, Animal ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mice, Obese ; Oligodeoxyribonucleotides/administration & dosage ; Phosphorylation/drug effects ; STAT1 Transcription Factor/antagonists & inhibitors ; STAT3 Transcription Factor/antagonists & inhibitors ; STAT4 Transcription Factor/antagonists & inhibitors ; Th1 Cells/drug effects ; Th17 Cells/drug effects ; Treatment Outcome |
Chemical Substances | Oligodeoxyribonucleotides ; STAT1 Transcription Factor ; STAT3 Transcription Factor ; STAT4 Transcription Factor ; Stat1 protein, mouse ; Stat3 protein, mouse ; Stat4 protein, mouse |
Language | English |
Publishing date | 2012-09-30 |
Publishing country | England |
Document type | Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't |
ZDB-ID | 2467145-9 |
ISSN | 1757-4684 ; 1757-4676 |
ISSN (online) | 1757-4684 |
ISSN | 1757-4676 |
DOI | 10.1002/emmm.201201272 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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