PMID- 37189776 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230519 IS - 2227-9059 (Print) IS - 2227-9059 (Electronic) IS - 2227-9059 (Linking) VI - 11 IP - 4 DP - 2023 Apr 12 TI - Encapsulation of Human Umbilical Cord Mesenchymal Stem Cells in LunaGel Photocrosslinkable Extracellular Matrix and Subcutaneous Transplantation in Mice. LID - 10.3390/biomedicines11041158 [doi] LID - 1158 AB - Stem cells have significant potential in regenerative medicines. However, a major issue with implanting stem cells in the regeneration of new tissue is the methods to implant them and cell viability and functions before and after implantation. Here we developed a simple yet effective method that used photo-crosslinkable gelatin-based hydrogel (LunaGel(TM)) as a scaffold for the encapsulation, expansion, and eventually, transplantation of human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) into mice subcutaneously. We demonstrated the proliferation and maintenance of the original expression of mesenchymal stem cell markers as well as the ability to differentiate into mesoderm-derived cells. The hydrogel was highly stable with no signs of degradation after 20 days in PBS. The hUC-MSCs remained viable after transplantation into mice's subcutaneous pockets and migrated to integrate with the surrounding tissues. We showed a collagen-rich layer surrounding the transplanted cell-laden scaffold indicating the effects of growth factors secreted by the hUC-MSCs. A connective tissue layer was found between the implanted cell-laden scaffold and the collagen layer, and immunohistochemical staining results suggested that this tissue was derived from the MSCs which migrated from within the scaffold. The results, thus, also suggested a protective effect the scaffold has on the encapsulated cells from the antibodies and cytotoxic cells of the host immune system. FAU - Pham, Truc Le-Buu AU - Pham TL AUID- ORCID: 0000-0001-7601-3527 AD - Biotechnology Center of Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam. FAU - Nguyen, Dang Phu-Hai AU - Nguyen DP AUID- ORCID: 0000-0002-7232-099X AD - Biotechnology Center of Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam. FAU - Luu, Thao Thi-Thu AU - Luu TT AUID- ORCID: 0009-0006-8369-7676 AD - Histology-Embryology-Pathology Department, Faculty of Medicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam. FAU - Nguyen, Luong Si AU - Nguyen LS AD - Biotechnology Center of Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam. FAU - Binh, Nguyen Trong AU - Binh NT AD - Biotechnology Center of Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam. FAU - Nguyen, Quan Dang AU - Nguyen QD AD - Biotechnology Center of Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam. FAU - Tran, Phong Anh AU - Tran PA AD - Interface Science and Materials Engineering Group, School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia. LA - eng PT - Journal Article DEP - 20230412 PL - Switzerland TA - Biomedicines JT - Biomedicines JID - 101691304 PMC - PMC10135450 OTO - NOTNLM OT - LunaGel OT - cell-laden scaffold OT - mesenchymal stem cells OT - regenerative medicine OT - umbilical cord COIS- The authors declare no conflict of interest. EDAT- 2023/05/16 06:42 MHDA- 2023/05/16 06:43 PMCR- 2023/04/12 CRDT- 2023/05/16 01:11 PHST- 2023/02/26 00:00 [received] PHST- 2023/04/03 00:00 [revised] PHST- 2023/04/05 00:00 [accepted] PHST- 2023/05/16 06:43 [medline] PHST- 2023/05/16 06:42 [pubmed] PHST- 2023/05/16 01:11 [entrez] PHST- 2023/04/12 00:00 [pmc-release] AID - biomedicines11041158 [pii] AID - biomedicines-11-01158 [pii] AID - 10.3390/biomedicines11041158 [doi] PST - epublish SO - Biomedicines. 2023 Apr 12;11(4):1158. doi: 10.3390/biomedicines11041158.