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Park HH, Lee S, Yu Y, Yoo SM, Baek SY, Jung N, Seo KW, Kang KS. TGF-β secreted by human umbilical cord blood-derived mesenchymal stem cells ameliorates atopic dermatitis by inhibiting secretion of TNF-α and IgE. Stem Cells 2020; 38:904-916. [PMID: 32277785 DOI: 10.1002/stem.3183] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 03/03/2020] [Accepted: 03/17/2020] [Indexed: 12/20/2022]
Abstract
Human mesenchymal stem cells (MSCs) are promising therapeutics for autoimmune diseases due to their immunomodulatory effects. In particular, human umbilical cord blood-derived MSCs (hUCB-MSCs) have a prominent therapeutic effect on atopic dermatitis (AD). However, the underlying mechanism is unclear. This study investigated the role of transforming growth factor-beta (TGF-β) in the therapeutic effect of hUCB-MSCs on AD. Small interfering RNA (siRNA)-mediated depletion of TGF-β disrupted the therapeutic effect of hUCB-MSCs in a mouse model of AD by attenuating the beneficial changes in histopathology, mast cell infiltration, tumor necrosis factor-alpha (TNF-α) expression, and the serum IgE level. To confirm that hUCB-MSCs regulate secretion of TNF-α, we investigated whether they inhibit TNF-α secretion by activated LAD2 cells. Coculture with hUCB-MSCs significantly inhibited secretion of TNF-α by LAD2 cells. However, this effect was abolished by siRNA-mediated depletion of TGF-β in hUCB-MSCs. TNF-α expression in activated LAD2 cells was regulated by the extracellular signal-related kinase signaling pathway and was suppressed by TGF-β secreted from hUCB-MSCs. In addition, TGF-β secreted by hUCB-MSCs inhibited maturation of B cells. Taken together, our findings suggest that TGF-β plays a key role in the therapeutic effect of hUCB-MSCs on AD by regulating TNF-α in mast cells and maturation of B cells.
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Affiliation(s)
- Hwan Hee Park
- Stem Cell and Regenerative Bioengineering Institute, Kangstem Biotech Co., Ltd., Biotechnology Center, Seoul National University, Seoul, South Korea
| | - Seunghee Lee
- Stem Cell and Regenerative Bioengineering Institute, Kangstem Biotech Co., Ltd., Biotechnology Center, Seoul National University, Seoul, South Korea
| | - Yeonsil Yu
- Stem Cell and Regenerative Bioengineering Institute, Kangstem Biotech Co., Ltd., Biotechnology Center, Seoul National University, Seoul, South Korea
| | - Sae Mi Yoo
- Stem Cell and Regenerative Bioengineering Institute, Kangstem Biotech Co., Ltd., Biotechnology Center, Seoul National University, Seoul, South Korea
| | - Song Yi Baek
- Stem Cell and Regenerative Bioengineering Institute, Kangstem Biotech Co., Ltd., Biotechnology Center, Seoul National University, Seoul, South Korea
| | - Namhee Jung
- Stem Cell and Regenerative Bioengineering Institute, Kangstem Biotech Co., Ltd., Biotechnology Center, Seoul National University, Seoul, South Korea
| | - Kwang-Won Seo
- Stem Cell and Regenerative Bioengineering Institute, Kangstem Biotech Co., Ltd., Biotechnology Center, Seoul National University, Seoul, South Korea
| | - Kyung-Sun Kang
- Stem Cell and Regenerative Bioengineering Institute, Kangstem Biotech Co., Ltd., Biotechnology Center, Seoul National University, Seoul, South Korea
- Adult Stem Cell Research Center, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
- Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
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