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Int. J. Mol. Sci. 2017, 18(8), 1678; doi:10.3390/ijms18081678

Intrapancreatic Parenchymal Injection of Cells as a Useful Tool for Allowing a Small Number of Proliferative Cells to Grow In Vivo

1
Section of Gene Expression Regulation, Frontier Science Research Center, Kagoshima University, Kagoshima 890-8544, Japan
2
Division of Pediatric Dentistry, Department of Oral Health Sciences, Course for Oral Life Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
3
Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan
4
Division of Biomedical Engineering, National Defense Medical College Research Institute, Saitama 359-8513, Japan
5
Animal Genome Unit, Division of Animal Breeding and Reproduction Research, Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Ibaraki 305-0901, Japan
*
Author to whom correspondence should be addressed.
Received: 28 June 2017 / Revised: 27 July 2017 / Accepted: 31 July 2017 / Published: 2 August 2017
(This article belongs to the Special Issue Stem Cell Research)
View Full-Text   |   Download PDF [5297 KB, uploaded 2 August 2017]   |  

Abstract

In vivo inoculation of cells such as tumor cells and induced pluripotent stem (iPS)/embryonic stem (ES) cells into immunocompromised mice has been considered as a powerful technique to evaluate their potential to proliferate or differentiate into various cell types originating from three germ cell layers. Subcutaneous grafting and grafting under the kidney capsule have been widely used for this purpose, but there are some demerits such as the requirement of a large number of tumor cells for inoculation and frequent failure of tumorigenesis. Therefore, grafting into other sites has been explored, including intratesticular or intramuscular grafting as well as grafting into the cochleae, liver, or salivary glands. In this study, we found that intrapancreatic parenchymal injection of cells is useful for allowing a small number of cells (~15 × 103 cells or ~30 cell clumps μL−1·site−1) to proliferate and sometimes differentiate into various types of cells. It requires only surgical exposure of the pancreas over the dorsal skin and subsequent injection of cells towards the pancreatic parenchyma under dissecting microscope-based observation using a mouthpiece-controlled glass micropipette. We now name this technology “intrapancreatic parenchymal cell transplantation (IPPCT)”, which will be useful, especially when only a small number of cells or colonies are available. View Full-Text
Keywords: cell transplantation; pancreas; iPS cells; ES cells; nude mouse; in vivo cell propagation; tumor cells; solid tumor cell transplantation; pancreas; iPS cells; ES cells; nude mouse; in vivo cell propagation; tumor cells; solid tumor
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Sato, M.; Saitoh, I.; Murakami, T.; Kubota, N.; Nakamura, S.; Watanabe, S.; Inada, E. Intrapancreatic Parenchymal Injection of Cells as a Useful Tool for Allowing a Small Number of Proliferative Cells to Grow In Vivo. Int. J. Mol. Sci. 2017, 18, 1678.

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