alexa Mouse Embryonic Fibroblasts Acquire Sarcomagenesis Pote
ISSN: 2157-7633

Journal of Stem Cell Research & Therapy
Open Access

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Research Article

Mouse Embryonic Fibroblasts Acquire Sarcomagenesis Potential after Differentiating into Insulin-Producing Cells

Gupta A1, Kurtovic S1†, Ng TT1†, Tsuyoshi T1, Narwani K2, Biancotti JC6, Spurka L3, Funari V3,5, Balzer B4, Talavera-Adame D1,2* and Dafoe DC1,2*

1Comprehensive Transplant Center, Department of Surgery, USA

2Board of Governors Regenerative Medicine Institute, USA

3Medical Genetics Institute and Genomic Core, USA

4Anatomic Pathology and Dermatopathology, Cedars-Sinai Medical Center, 8700 Beverly Blvd, Los Angeles CA, USA

5David Geffen Schools of Medicine at UCLA, Division of Medical Genetics and Biomedical Sciences, Los Angeles, CA, USA

6Zilkha Neurogenetic Institute, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA

Contributed equally to this work

*Corresponding Author:
Dodanim Talavera-Adame, M.D., Ph.D
Assistant Professor, Comprehensive Transplant Center
Department of Surgery and Board of Governors Regenerative Medicine Institute
Cedars-Sinai Medical Center 8700 Beverly Blvd.
A8104-R, Los Angeles, CA 90048, USA
Tel: (310) 248-6698
E-mail: [email protected]

Received date: July 28, 2015; Accepted date: September 02, 2015; Published date: September 08, 2015

Citation: Gupta A, Kurtovic S, Ng TT, Tsuyoshi T, Narwani K, et al. (2015) Mouse Embryonic Fibroblasts Acquire Sarcomagenesis Potential after Differentiating into Insulin-Producing Cells. J Stem Cell Res Ther 5:302. doi:10.4172/2157-7633.1000302

Copyright: © 2015 Gupta A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



An abundant source of insulin-producing cells would enhance the success of islet transplantation for treatment of diabetes. Insulin-producing cells can be derived from human fibroblasts which acquired a mesenchymal stem cell (MSC) phenotype. However, these MSCs are able to give rise sarcomas after transformation. Our aim was to investigate whether mouse embryonic fibroblast (MEF) acquire sarcomagenesis potential after differentiating to insulinproducing cells. We derived insulin-producing cells from a MEF cell line MMMbz. After differentiation, the cells were labeled with green fluorescent protein (GFP) driven by rat insulin promoter (INS-GFP) for cell isolation, expansion and characterization by immunocytochemistry (ICC), quantitative RT-PCR (qRT-PCR), and genetic microarrays. These cells were then FACS sorted and transplanted under the kidney capsule of SCID mice to evaluate cell behavior. Grafted cells were analyzed by IHC. MMMbz expressed platelet-derived growth factor receptor alpha (PDGFR-α) and nestin. After differentiation, higher expression of beta-cell markers were found in sorted cells compared to non-sorted cells. Genetic microarray corroborated the expression of pancreatic and mesenchymal markers along with activation of cancer pathways. Within 30 days after transplantation, all grafted mice developed undifferentiated sarcomas that impaired further assessments of insulin-producing cell function. Therefore, insulin-producing cell lines can be derived in vitro from mouse embryonic fibroblasts that behave as MSCs but sarcomagenesis potential may be conferred by a subpopulation of transformed cells.

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