Depletion of ID3 enhances mesenchymal stem cells therapy by targeting BMP4 in Sjögren's syndrome.

Cell Death & Disease
Lei HuSonglin Wang

Abstract

Mesenchymal stem cell (MSCs) transplantation has been used to treat Sjögren's syndrome (SS) based on the immunoregulatory properties of MSCs. However, the effectiveness need improving and its underlying intrinsic mechanisms remain largely unknown. Here, we show that Id3 is upregulated in bone marrow-derived MSCs (BMMSCs) isolated from NOD/ShiLtJ mice, a widely used SS model, compared with ICR mice as control, suggesting that it functions in SS development and therapy. Transplantation of Id3-deficient BMMSCs rescues salivary gland function more effective than wild-type BMMSCs in NOD/ShiLtJ mice. Mechanistically, we show that ID3 negatively regulated BMP4 expression by preventing binding of basic helix-loop-helix protein E2A to the promoter of the Bmp4 gene. BMP4 in turn promoted PGE2 production in MSCs, and exhibited enhanced suppressive activities of T-cell proliferation and Th1 differentiation. Importantly, BMMSCs from SS patients showed significantly lower BMP4 and PGE2 expression than those from healthy individuals. Taken together, our findings revealed the targeting Id3 may be therapeutically useful for improving MSC immunoregulation and effectiveness of MSCs therapy for SS.

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Citations

Sep 21, 2021·Science China. Life Sciences

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Methods Mentioned

BETA
chip
transfection
immunoprecipitation
Co-immunoprecipitation
flow cytometry
fluorescence-assisted cell sorting
electrophoresis

Software Mentioned

FlowJo
ModFit LT
Pro Plus
GraphPad Prism
Image

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