PMID- 37975541 OWN - NLM STAT- MEDLINE DCOM- 20240130 LR - 20240206 IS - 1600-0625 (Electronic) IS - 0906-6705 (Linking) VI - 33 IP - 1 DP - 2024 Jan TI - Exosomes derived from human dermal fibroblasts (HDFn-Ex) alleviate DNCB-induced atopic dermatitis (AD) via PPARalpha. PG - e14970 LID - 10.1111/exd.14970 [doi] AB - Atopic dermatitis (AD) is a chronic inflammatory skin disease. Skin barrier dysfunction is the initial step in the development of AD. Recently, exosomes have been considered as potential cell-free medicine for skin defects such as aging, psoriasis and wounds. The aim of this study was to investigate the effects of human dermal fibroblast-neonatal-derived exosome (HDFn-Ex) on AD. HDFn-Ex increased the expression of peroxisome proliferator activated receptor alpha (PPARalpha) and alleviated the 1-chloro-2,4-dinitrobenzene (DNCB)-mediated downregulation of filaggrin, involucrin, loricrin, hyaluronic acid synthase 1 (HAS1) and HAS2 in human keratinocyte HaCaT cells. However, these effects were inhibited by the PPARalpha antagonist GW6471. In the artificial skin model, HDFn-Ex significantly inhibited DNCB-induced epidermal hyperplasia and the decrease in filaggrin and HAS1 levels via a PPARalpha. In the DNCB-induced AD-like mouse model, HDFn-Ex administration reduced epidermis thickening and mast cell infiltration into the dermis compared to DNCB treatment. Moreover, the decreases in PPARalpha, filaggrin and HAS1 expression, as well as the increases in IgE and IL4 levels induced by DNCB treatment were reversed by HDFn-Ex. These effects were blocked by pre-treatment with GW6471. Furthermore, HDFn-Ex exhibited an anti-inflammatory effect by inhibiting the DNCB-induced increases in IkappaBalpha phosphorylation and TNF-alpha expression. Collectively, HDFn-Ex exhibited a protective effect on AD. Notably, these effects were regulated by PPARalpha. Based on our results, we suggest that HDFn-Ex is a potential candidate for treating AD by recovering skin barrier dysfunction and exhibiting anti-inflammatory activity. CI - (c) 2023 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. FAU - Jang, You Na AU - Jang YN AUID- ORCID: 0000-0002-0014-9783 AD - Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea. FAU - Lee, Jung Ok AU - Lee JO AUID- ORCID: 0000-0002-0048-5322 AD - Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea. FAU - Lee, Jung Min AU - Lee JM AUID- ORCID: 0000-0002-4670-2521 AD - Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea. FAU - Park, A Yeon AU - Park AY AUID- ORCID: 0000-0002-4667-8875 AD - Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea. AD - Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea. FAU - Kim, Yu Jin AU - Kim YJ AUID- ORCID: 0000-0002-1247-2887 AD - Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea. AD - Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea. FAU - Kim, Su Young AU - Kim SY AUID- ORCID: 0000-0002-3251-5813 AD - Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea. AD - Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea. FAU - Seok, Joon AU - Seok J AUID- ORCID: 0000-0002-8016-8385 AD - Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea. AD - Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea. FAU - Yoo, Kwang Ho AU - Yoo KH AUID- ORCID: 0000-0002-0137-6849 AD - Department of Dermatology, Chung-Ang University Gwang-Myeong Hospital, Chung-Ang University College of Medicine, Seoul, South Korea. FAU - Kim, Beom Joon AU - Kim BJ AUID- ORCID: 0000-0003-2320-7621 AD - Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea. AD - Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea. LA - eng GR - Chung-Ang University Research Scholarship Grants/ GR - 2021R1G1A1007827/National Research Foundation of Korea/ PT - Journal Article DEP - 20231117 PL - Denmark TA - Exp Dermatol JT - Experimental dermatology JID - 9301549 RN - 0 (PPAR alpha) RN - 0 (Dinitrochlorobenzene) RN - 0 (Filaggrin Proteins) RN - 0 (Dinitrobenzenes) RN - 0 (Anti-Inflammatory Agents) RN - 0 (Cytokines) SB - IM MH - Animals MH - Mice MH - Infant, Newborn MH - Humans MH - *Dermatitis, Atopic/chemically induced/drug therapy/metabolism MH - PPAR alpha/metabolism MH - Dinitrochlorobenzene/metabolism/pharmacology/therapeutic use MH - Filaggrin Proteins MH - Dinitrobenzenes/adverse effects/metabolism MH - *Exosomes/metabolism MH - Skin/metabolism MH - Anti-Inflammatory Agents/pharmacology MH - *Skin Diseases/metabolism MH - Cytokines/metabolism MH - Mice, Inbred BALB C OTO - NOTNLM OT - PPARalpha OT - atopic dermatitis OT - dermal fibroblast OT - exosomes OT - filaggrin OT - keratinocyte OT - skin barrier EDAT- 2023/11/17 15:24 MHDA- 2024/01/30 12:43 CRDT- 2023/11/17 07:23 PHST- 2023/07/30 00:00 [revised] PHST- 2023/04/16 00:00 [received] PHST- 2023/09/04 00:00 [accepted] PHST- 2024/01/30 12:43 [medline] PHST- 2023/11/17 15:24 [pubmed] PHST- 2023/11/17 07:23 [entrez] AID - 10.1111/exd.14970 [doi] PST - ppublish SO - Exp Dermatol. 2024 Jan;33(1):e14970. doi: 10.1111/exd.14970. Epub 2023 Nov 17.