title: Hematopoietic stem cells contribute to the regeneration of renal tubules after renal ischemia-reperfusion injury in mice.
abstract: Ischemia-reperfusion injury (I/R injury) is a common cause of acute renal failure. Recovery from I/R injury requires renal tubular regeneration. Hematopoietic stem cells (HSC) have been shown to be capable of differentiating into hepatocytes, cardiac myocytes, gastrointestinal epithelial cells, and vascular endothelial cells during tissue repair. The current study tested the hypothesis that murine HSC can contribute to the regeneration of renal tubular epithelial cells after I/R injury. HSC isolated from male Rosa26 mice that express beta-galactosidase constitutively were transplanted into female nontransgenic mice after unilateral renal I/R injury. Four weeks after HSC transplantation, beta-galactosidase-positive cells were detected in renal tubules of the recipients by X-Gal staining. PCR analysis of the male-specific Sry gene and Y chromosome fluorescence in situ hybridization confirmed the presence of male-derived cells in the kidneys of female recipients. Antibody co-staining showed that beta-galactosidase was primarily expressed in renal proximal tubules. This is the first report to show that HSC can differentiate into renal tubular cells after I/R injury. Because of their availability, HSC may be useful for cell replacement therapy of acute renal failure.
authors.affiliation: Department of Pediatrics, University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Boulevard, Mail Code 9063, Dallas, TX 75390-9063, USA. fangming.lin@UTSouthwestern.edu
authors.forename: Fangming
authors.initials: F
authors.lastname: Lin
authors.forename: Kimberly
authors.initials: K
authors.lastname: Cordes
authors.forename: Linheng
authors.initials: L
authors.lastname: Li
authors.forename: Leroy
authors.initials: L
authors.lastname: Hood
authors.forename: William G
authors.initials: WG
authors.lastname: Couser
authors.forename: Stuart J
authors.initials: SJ
authors.lastname: Shankland
authors.forename: Peter
authors.initials: P
authors.lastname: Igarashi
mesh_terms: D000818:Animals; D000906:Antibodies; D000950:Antigens, Ly / Q000032:analysis; D015415:Biomarkers; D016923:Cell Death; D002454:Cell Differentiation; D002469:Cell Separation / Q000379:methods; D004847:Epithelial Cells / Q000166:cytology; D005260:Female; D005697:Galactosides; D024282:Genes, sry; D018380:Hematopoietic Stem Cell Transplantation; D006412:Hematopoietic Stem Cells / Q000737:chemistry / Q000166:cytology; D017404:In Situ Hybridization, Fluorescence; D007211:Indoles; D007684:Kidney Tubules / Q000166:cytology / Q000502:physiology*; D008297:Male; D008565:Membrane Proteins / Q000032:analysis; D051379:Mice; D008815:Mice, Inbred Strains; D019009:Proto-Oncogene Proteins c-kit / Q000032:analysis; D012038:Regeneration; D015427:Reperfusion Injury / Q000473:pathology / Q000503:physiopathology* / Q000628:therapy*; D013194:Staining and Labeling; D014998:Y Chromosome; D001616:beta-Galactosidase / Q000276:immunology
chemical_list: D000906:Antibodies; D000950:Antigens, Ly; D015415:Biomarkers; D005697:Galactosides; D007211:Indoles; C074650:Ly6a protein, mouse; D008565:Membrane Proteins; D019009:Proto-Oncogene Proteins c-kit; D001616:beta-Galactosidase; C044888:5-bromo-4-chloro-3-indolyl beta-galactoside