Originally published as JHC exPRESS on June 27, 2005. doi:10.1369/jhc.5A6639.2005
Volume 53 (10): 1215-1226, 2005 Copyright ©The Histochemical Society, Inc. Analysis of Green Fluorescent Protein Expression in Transgenic Rats for Tracking Transplanted Neural Stem/Progenitor Cells
Division of Cellular and Molecular Biology, Toronto Western Research Institute, Toronto, Ontario, Canada (AJM,IK,RLvB,LL,CHT); Divisions of Organ Replacement Research, Animal Transgenic Research and Molecular Immunology, Centre for Molecular Medicine, Jichi Medical School, Kawachi, Tochigi, Japan (EK); and Princess Margaret Hospital, Ontario Cancer Institute, Toronto, Ontario, Canada (AK) Correspondence to: Dr. Charles H. Tator, Toronto Western Hospital, McL 12-423, 399 Bathurst Street, Toronto, ON M5T 2S8, Canada. E-mail: charles.tator{at}uhn.on.ca Green fluorescent protein (GFP) expression was evaluated in tissues of different transgenic rodentsSprague-Dawley (SD) rat strain [SD-Tg(GFP)Bal], W rat strain [Wistar-TgN(CAG-GFP)184ys], and M mouse strain [Tg(GFPU)5Nagy/J]by direct fluorescence of native GFP expression and by immunohistochemistry. The constitutively expressing GFP transgenic strains showed tissue-specific differences in GFP expression, and GFP immunohistochemistry amplified the fluorescent signal. The fluorescence of stem/progenitor cells cultured as neurospheres from the ependymal region of the adult spinal cord from the GFP SD and W rat strains was assessed in vitro. After transplantation of the cells into wild-type spinal cord, the ability to track the grafted cells was evaluated in vivo. Cultured stem/progenitor cells from the SD strain required GFP immunostaining to be visualized. Likewise, after transplantation of SD cells into the spinal cord, immunohistochemical amplification of the GFP signal was required for detection. In contrast, GFP expression of stem/progenitor cells generated from the W strain was readily detected by direct fluorescence both in vitro and in vivo without the need for immunohistochemical amplification. The cultured stem/progenitor cells transplanted into the spinal cord survived for at least 49 days after transplantation, and continued to express GFP, demonstrating stable expression of the GFP transgene in vivo. (J Histochem Cytochem 53:12151226, 2005)
Key Words: GFP transgenic rat immunohistochemistry spinal cord stem/progenitor cells transplantation
This article has been cited by other articles:
|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||