PMID- 35282132 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220315 IS - 2305-5839 (Print) IS - 2305-5847 (Electronic) IS - 2305-5839 (Linking) VI - 10 IP - 2 DP - 2022 Jan TI - Effects of different concentrations of human umbilical cord mesenchymal stem cells to ameliorate psoriasis-like skin lesions in BALB/c mice. PG - 86 LID - 10.21037/atm-22-4 [doi] LID - 86 AB - BACKGROUND: Psoriasis is an immune-mediated chronic, recurrent, inflammatory skin disease. In view of the research on the relationship between stem cells and the pathogenesis of psoriasis, stem cells may be a new breakthrough in the systemic treatment of psoriasis. METHODS: The BALB/c mouse psoriasis-like model induced by imiquimod was established and animals were randomly divided into a control group, model group, human umbilical cord mesenchymal stem cells (hUC-MSCs) group with different concentrations (injected separately with umbilical cord stem cells 1x10(7)/kg, 2x10(7)/kg, 4x10(7)/kg through the caudal vein) and fresh hUC-MSCs group (injected with fresh umbilical cord stem cells 2x10(7)/kg through the tail vein). The Psoriasis Area and Severity Index (PASI) score was used to observe the changes in skin lesions. The epidermal thickness, degree of keratinization and infiltration of inflammatory cells were observed by HE staining. The concentrations of TNF-alpha, IFN-gamma, IL-17A, IL-23 and other cytokines in serum and skin of mice were measured by enzyme-linked immunosorbent assay (ELISA). RESULTS: Mice treated with hUC-MSCs showed a good dose-response dependence compared with the control group. As the concentration of hUC-MSCs increased, so did the spleen index. According to the PASI integral trend chart, hUC-MSCs can delay the appearance of skin lesions and accelerate the recovery of skin lesions. HE staining showed that the number of parakeratosis cells in the hUC-MSCs treatment group was significantly decreased, and the degree of dermal hyperplasia and inflammatory cell infiltration in erythrocyte extravasation was significantly lower than in the model group. The higher the concentration of hUC-MSCs, the lower the concentration of the four cytokines in serum and skin tissue. CONCLUSIONS: hUC-MSCs had an obvious therapeutic effect on imiquimod-induced psoriasis in mice, and a high concentration of hUC-MSCs had the best therapeutic effect. This effect intensity is dose-dependent, and hUC-MSCs at high concentrations have better therapeutic effect. CI - 2022 Annals of Translational Medicine. All rights reserved. FAU - Lin, Youshu AU - Lin Y AD - Department of Cosmetic Dermatology, The Fifth People's Hospital of Hainan Province, Haikou, China. FAU - Wang, Hongwei AU - Wang H AD - Asia Stem Cell Regenerative Pharmaceutical Co., Ltd., Shanghai, China. FAU - Jiang, Cuibao AU - Jiang C AD - Asia Stem Cell Regenerative Pharmaceutical Co., Ltd., Shanghai, China. FAU - Chen, Chen AU - Chen C AD - Asia Stem Cell Regenerative Pharmaceutical Co., Ltd., Shanghai, China. FAU - Shen, Danpeng AU - Shen D AD - Asia Stem Cell Regenerative Pharmaceutical Co., Ltd., Shanghai, China. FAU - Xie, Fan AU - Xie F AD - Asia Stem Cell Regenerative Pharmaceutical Co., Ltd., Shanghai, China. FAU - Zhang, Hongpeng AU - Zhang H AD - Asia Stem Cell Regenerative Pharmaceutical Co., Ltd., Shanghai, China. FAU - Yang, Jie AU - Yang J AD - Department of Cosmetic Dermatology, The Fifth People's Hospital of Hainan Province, Haikou, China. FAU - Wang, Hao AU - Wang H AD - Asia Stem Cell Regenerative Pharmaceutical Co., Ltd., Shanghai, China. LA - eng PT - Journal Article PL - China TA - Ann Transl Med JT - Annals of translational medicine JID - 101617978 PMC - PMC8848403 OTO - NOTNLM OT - Cytokines OT - human umbilical cord mesenchymal stem cells (hUC-MSCs) OT - indirubin OT - psoriasis COIS- Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at https://atm.amegroups.com/article/view/10.21037/atm-22-4/coif). The authors report that research was supported by Hainan Province Clinical Medical Center and the funding project "Effects of indigo naturalis and Arnebia on differentiation and barrier function of epidermal stem cells in psoriasis response research (Hainan Natural Science Foundation, 20158342)". HW, CJ, CC, DS, FX, HZ, HW are from Asia Stem Cell Regenerative Pharmaceutical Co., Ltd. The authors have no other conflicts of interest to declare. EDAT- 2022/03/15 06:00 MHDA- 2022/03/15 06:01 PMCR- 2022/01/01 CRDT- 2022/03/14 05:30 PHST- 2021/11/12 00:00 [received] PHST- 2022/01/19 00:00 [accepted] PHST- 2022/03/14 05:30 [entrez] PHST- 2022/03/15 06:00 [pubmed] PHST- 2022/03/15 06:01 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - atm-10-02-86 [pii] AID - 10.21037/atm-22-4 [doi] PST - ppublish SO - Ann Transl Med. 2022 Jan;10(2):86. doi: 10.21037/atm-22-4.