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Mesenchymal Stem Cell-Mediated Ectopic Hematopoiesis Alleviates Aging-Related Phenotype in Immunocompromised Mice
Authors
Kentaro Akiyama
Yanming Bi
+7 more
Wanjun Chen
Stan Gronthos
Anh Le
Yasuo Miura
Songtao Shi
Wataru Sonoyama
Takayoshi Yamaza
Publication date
12 March 2009
Publisher
ScholarlyCommons
Abstract
Subcutaneous transplants of bone marrow mesenchymal stem cells (BMMSCs) are capable of generating ectopic bone and organizing functional hematopoietic marrow elements in animal models. Here we report that immunocompromised mice received subcutaneous BMMSC transplants using hydroxyapatite tricalcium phosphate as a carrier suppressed age- related degeneration in multiple organs and benefited an increase in life span extension compared with control litter- mates. The newly organized ectopic bone/ marrow system restores active hemato-poiesis via the erythropoietin receptor/ signal transducer and activator of transcription 5 (Stat5) pathway. Furthermore, the BMMSC recipient mice showed elevated level of Klotho and suppression of insulin-like growth factor I signaling, which may be the mechanism contributing to the alleviation of aging-like pheno-types and prolongation of life in the treated mice. This work reveals that erythropoietin receptor/Stat5 pathway contributes to BMMSC-organized ectopic hema-topoiesis, which may offer a treatment paradigm of reversing age-related degeneration of multiple organs in adult immunocompromised mice. © 2009 by The American Society of Hematology
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Last time updated on 04/03/2023