Gene-activated Matrix/bone Marrow-derived Mesenchymal Stem Cells Constructs Regenerate Sweat Glands-like Structure in Vivo
Affiliations
It is a significant challenge to regenerate full-thickness skin defects with sweat glands. Various skin substitutes have been developed to resolve this issue with minimal success. In this study, to yield a novel construct for in situ regeneration of sweat glands, the collagen-chitosan porous scaffold was combined with Lipofectamine 2000/pDNA-EGF complexes to obtain the gene-activated scaffold (GAS), which was then seeded with bone marrow-derived mesenchymal stem cells (BM-MSCs). The porous scaffold functionalized as a reservoir for the incorporated gene complexes which were released in a sustained manner. The seeded BM-MSCs were transfected in situ by the released complexes and specially differentiated into sweat gland cells in vitro under the induction of the expressed epidermal growth factor (EGF). Application in vivo of the GAS/BM-MSCs constructs on the full-thickness skin defects of SD rats confirmed that GAS/BM-MSCs could accelerate the wound healing process and induce the in situ regeneration of the full-thickness skin with sweat gland-like structures. Analyzed by immunohistochemical staining, RT-qPCR and Western-blotting, the levels of the major sweat gland markers such as carcino-embryonic antigen (CEA), cytokeratin 8 (CK8) and cytokeratin 14 (CK14) were all up-regulated, indicating that GAS/BM-MSCs can facilitate the regeneration of sweat glands-like structure in vivo.
Advances and applications of biomimetic biomaterials for endogenous skin regeneration.
Wang M, Hong Y, Fu X, Sun X Bioact Mater. 2024; 39:492-520.
PMID: 38883311 PMC: 11179177. DOI: 10.1016/j.bioactmat.2024.04.011.
The Role and Prospects of Mesenchymal Stem Cells in Skin Repair and Regeneration.
Wu S, Sun S, Fu W, Yang Z, Yao H, Zhang Z Biomedicines. 2024; 12(4).
PMID: 38672102 PMC: 11048165. DOI: 10.3390/biomedicines12040743.
Biofabrication of Human Skin with Its Appendages.
Hosseini M, Koehler K, Shafiee A Adv Healthc Mater. 2022; 11(22):e2201626.
PMID: 36063498 PMC: 11469047. DOI: 10.1002/adhm.202201626.
Paeoniflorin inhibits proliferation and promotes autophagy and apoptosis of sweat gland cells.
Xu Y, He H, Li P, Liu H Exp Ther Med. 2021; 23(1):53.
PMID: 34934430 PMC: 8652401. DOI: 10.3892/etm.2021.10975.
Laiva A, OBrien F, Keogh M Pharmaceuticals (Basel). 2021; 14(11).
PMID: 34832950 PMC: 8619173. DOI: 10.3390/ph14111168.