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Application of extracellular vesicles from mesenchymal stem cells promotes hair growth by regulating human dermal cells and follicles

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World Journal of Stem cells 2022年第7期14卷 527-538页

作者： Ramya Lakshmi Rajendran Prakash Gangadaran Mi Hee Kwack Ji Min Oh Chae Moon Hong Young KwanSung Jaetae Lee Byeong-Cheol Ahn Department of Nuclear Medicine School of MedicineKyungpook National UniversityDaegu 41944South Korea BK21 FOUR KNU Convergence Educational Program of Biomedical Sciences for Creative Future Talents Department of Biomedical SciencesSchool of MedicineKyungpook National UniversityDaegu 41944South Korea Department of Immunology School of MedicineKyungpook National UniversityDaegu 41944South Korea Department of Nuclear Medicine Kyungpook National University HospitalDaegu 41944South Korea

BACKGROUND Dermal papillae(DP)and outer root sheath(ORS)cells play important roles in hair growth and regeneration by regulating the activity of hair follicle(HF)*** To investigate the effects of human mesenchymal stem cell-derived extracellular vesicles(hMSC-EVs)on DP and ORS cells as well as *** are known to regulate various cellular ***,the effects of hMSC-EVs on hair growth,particularly on human-derived HF cells(DP and ORS cells),and the possible mechanisms underlying these effects are *** hMSC-EVs were isolated and characterized using transmission electron microscopy,nanoparticle tracking analysis,western blotting,and flow *** activation of DP and ORS cells was analyzed using cellular proliferation,migration,western blotting,and real-time polymerase chain *** growth was evaluated ex vivo using human *** Wnt3a is present in a class of hMSC-EVs and associated with the EV ***-EVs promote the proliferation of DP and ORS ***,they translocateβ-catenin into the nucleus of DP cells by increasing the expression ofβ-catenin target transcription factors(Axin2,EP2 and LEF1)in DP *** with hMSC-EVs also promoted the migration of ORS cells and enhanced the expression of keratin(K)differentiation markers(K6,K16,K17,and K75)in ORS ***,treatment with hMSC-EVs increases hair shaft elongation in cultured human *** These findings suggest that hMSC-EVs are potential candidates for further preclinical and clinical studies on hair loss treatment.

关键词： Mesenchymal stem cells Extracellular vesicles Hair growth Dermal papillae outer root sheath cells

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