Transplantation of human neural stem/progenitor cells overexpressing galectin-1 improves functional recovery from focal brain ischemia in the Mongolian gerbil.

Abstract	Transplantation of human neural stem/progenitor cells (hNSPCs) is a promising method to regenerate tissue from damage and recover function in various neurological diseases including brain ischemia. Galectin-1(Gal1) is a lectin that is expressed in damaged brain areas after ischemia. Here, we characterized the detailed Gal1 expression pattern in an animal model of brain ischemia. After brain ischemia, Gal1 was expressed in reactive astrocytes within and around the infarcted region, and its expression diminished over time. Previously, we showed that infusion of human Gal1 protein (hGal1) resulted in functional recovery after brain ischemia but failed to reduce the volume of the ischemic region. This prompted us to examine whether the combination of hNSPCs-transplantation and stable delivery of hGal1 around the ischemic region could reduce the ischemic volume and promote better functional recovery after brain ischemia. In this study, we transplanted hNSPCs that stably overexpressed hGal1 (hGal1-hNSPCs) in a model of unilateral focal brain ischemia using Mongolian gerbils. Indeed, we found that transplantation of hGal1-hNSPCs both reduced the ischemic volume and improved deficits in motor function after brain ischemia to a greater extent than the transplantation of hNSPCs alone. This study provides evidence for a potential application of hGal1 with hNSPCs-transplantation in the treatment of brain ischemia.
Authors	Junichi Yamane, Satoru Ishibashi, Masanori Sakaguchi, Toshihiko Kuroiwa, Yonehiro Kanemura, Masaya Nakamura, Hiroyuki Miyoshi, Kazunobu Sawamoto, Yoshiaki Toyama, Hidehiro Mizusawa, Hideyuki Okano
Journal	Molecular brain (Mol Brain) Vol. 4 Pg. 35 (Sep 27 2011) ISSN: 1756-6606 [Electronic] England
PMID	21951913 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References	Galectin 1
Topics	Animals Brain (metabolism, pathology, physiopathology) Brain Ischemia (physiopathology) Disease Models, Animal Galectin 1 (metabolism) Gerbillinae Humans Male Mongolia Neural Stem Cells (cytology, metabolism, transplantation) Recovery of Function (physiology) Stem Cell Transplantation

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