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Updated: Aug 8, 2026
07:49
Molecular Analysis of Endothelial-mesenchymal Transition Induced by Transforming Growth Factor-β Signaling
Published on: August 3, 2018
[Effects of transforming growth factor beta1 on dendritic cells function]
Mao-fang Lin1, Hai-bo Mou, Hong Cen
1Bone Marrow Transplantation Center, the First Affiliated Hospital of Medical College, Zhejiang University, Hangzhou 310003, China.
Zhonghua Xue Ye Xue Za Zhi = Zhonghua Xueyexue Zazhi
|November 24, 2004
Summary
Transforming growth factor beta1 (TGF-beta1) inhibits co-stimulatory molecule expression on dendritic cells (DC). TGF-beta1-treated dendritic cells resist maturation and show reduced TLR4 expression, impacting immune responses.
Area of Science:
- Immunology
- Cell Biology
Context:
- Dendritic cells (DCs) are crucial antigen-presenting cells that bridge innate and adaptive immunity.
- Transforming growth factor beta1 (TGF-beta1) is a pleiotropic cytokine with known immunomodulatory functions.
- Understanding TGF-beta1's effect on DC maturation and function is vital for developing immunotherapies.
Purpose:
- To investigate the impact of TGF-beta1 on dendritic cell (DC) development and response to maturation stimuli.
- To analyze phenotypic and functional changes in DCs treated with TGF-beta1.
Summary:
- Murine bone marrow-derived DCs were cultured with or without TGF-beta1 to generate immature DCs (imDC) and TGF-beta1-treated DCs (TGFbeta-DC).
- TGFbeta-DC exhibited lower expression of co-stimulatory molecules (CD80, CD86) and impaired IL-12p70 production compared to imDC.
- TGFbeta-DC showed resistance to lipopolysaccharide (LPS)-induced maturation and down-regulated Toll-like receptor 4 (TLR4) expression.
Impact:
- TGF-beta1 suppresses DC maturation and co-stimulatory molecule expression, potentially dampening T-cell activation.
- The observed resistance to LPS and TLR4 down-regulation in TGFbeta-DC suggests a mechanism for immune evasion or tolerance induction.
- These findings have implications for modulating DC function in autoimmune diseases, transplantation, and cancer immunotherapy.
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