TGF-β3 Inhibits Antibody Production by Human B Cells
Overview
Authors
Affiliations
TGF-β is a pleotropic cytokine involved in various biological processes. Of the three isoforms of TGF-β, TGF-β1 has long been recognized as an important inhibitory cytokine in the immune system and has been reported to inhibit B cell function in both mice and humans. Recently, it has been suggested that TGF-β3 may play an important role in the regulation of immune system in mice. Murine CD4+CD25-LAG3+ regulatory T cells suppress B cell function through the production of TGF-β3, and it has been reported that TGF-β3 is therapeutic in a mouse model of systemic lupus erythematosus. The effect of TGF-β3 on human B cells has not been reported, and we herein examined the effect of TGF-β3 on human B cells. TGF-β3 suppressed B cell survival, proliferation, differentiation into plasmablasts, and antibody secretion. Although the suppression of human B cells by TGF-β1 has long been recognized, the precise mechanism for the suppression of B cell function by TGF-β1 remains elusive; therefore, we examined the effect of TGF-β1 and β3 on pathways important in B cell activation and differentiation. TGF-β1 and TGF-β3 inhibited some of the key molecules of the cell cycle, as well as transcription factors important in B cell differentiation into antibody secreting cells such as IRF4, Blimp-1, and XBP1. TGF-β1 and β3 also inhibited B cell receptor signaling. Our results suggest that TGF-β3 modifying therapy might be therapeutic in autoimmune diseases with B cell dysregulation in humans.
TW01 Mitigates PM-Induced Lung Injury and Improves Gut Health in Mice.
Luo S, Chen M Nutrients. 2025; 17(5).
PMID: 40077701 PMC: 11901689. DOI: 10.3390/nu17050831.
Th1-related transcription factors and cytokines in systemic lupus erythematosus.
Tang Y, Wang D, Chen Y, Xu W, Huang A Front Immunol. 2024; 14:1305590.
PMID: 38164134 PMC: 10757975. DOI: 10.3389/fimmu.2023.1305590.
Dadelahi A, Abushahba M, Ponzilacqua-Silva B, Chambers C, Moley C, Lacey C PLoS Pathog. 2023; 19(9):e1011672.
PMID: 37721965 PMC: 10538787. DOI: 10.1371/journal.ppat.1011672.
Cao L, Liu Q, Ma Y, Wang S Clin Transl Oncol. 2023; 26(4):905-916.
PMID: 37709978 DOI: 10.1007/s12094-023-03320-4.
Zhou X, Gu Y, Wang H, Zhou W, Zou L, Li S Inflamm Res. 2023; 72(6):1215-1235.
PMID: 37314518 DOI: 10.1007/s00011-023-01742-y.