title: Transdifferentiation of mouse adipose-derived stromal cells into acinar cells of the submandibular gland using a co-culture system.
abstract: A loss of salivary gland function often occurs after radiation therapy in head and neck tumors, though secretion of saliva by the salivary glands is essential for the health and maintenance of the oral environment. Transplantation of salivary acinar cells (ACs), in part, may overcome the side effects of therapy. Here we directly differentiated mouse adipose-derived stromal cells (ADSCs) into ACs using a co-culture system. Multipotent ADSCs can be easily collected from stromal vascular fractions of adipose tissues. The isolated ADSCs showed positive expression of markers such as integrin beta-1 (CD29), cell surface glycoprotein (CD44), endoglin (CD105), and Nanog. The cells were able to differentiate into adipocytes, osteoblasts, and neural-like cells after 14 days in culture. ADSCs at passage 2 were co-cultured with mouse ACs in AC culture medium using the double-chamber (co-culture system) to avoid mixing the cell types. The ADSCs in this co-culture system expressed markers of ACs, such as α-amylases and aquaporin5, in both mRNA and protein. ADSCs cultured in AC-conditioned medium also expressed AC markers. Cellular proliferation and senescence analyses demonstrated that cells in the co-culture group showed lower senescence and a higher proliferation rate than the AC-conditioned medium group at Days 14 and 21. The results above imply direct conversion of ADSCs into ACs under the co-culture system; therefore, ADSCs may be a stem cell source for the therapy for salivary gland damage.
authors: Cellular Reprogramming and Embryo Biotechnology Laboratory, Dental Research Institute, School of Dentistry, Seoul National University, Jongno-gu, Seoul 110-744, South Korea.
authors: Jingu
authors: J
authors: Lee
authors: Cellular Reprogramming and Embryo Biotechnology Laboratory, Dental Research Institute, School of Dentistry, Seoul National University, Jongno-gu, Seoul 110-744, South Korea.
authors: Sangkyu
authors: S
authors: Park
authors: Cellular Reprogramming and Embryo Biotechnology Laboratory, Dental Research Institute, School of Dentistry, Seoul National University, Jongno-gu, Seoul 110-744, South Korea. Electronic address: sangho@snu.ac.kr.
authors: Sangho
authors: S
authors: Roh
mesh_terms: D061354:Acinar Cells / Q000166:cytology* / Q000378:metabolism; D017667:Adipocytes / Q000166:cytology* / Q000378:metabolism; D000818:Animals; D054338:Cell Transdifferentiation; D018920:Coculture Techniques; D005260:Female; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D008811:Mice, Inbred DBA; D017154:Stromal Cells / Q000166:cytology* / Q000378:metabolism; D013363:Submandibular Gland / Q000166:cytology* / Q000378:metabolism
keywords: Acinar cell; Adipose-derived stromal cell; Co-culture system; Conditioned medium; Transdifferentiation