{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,12]],"date-time":"2026-03-12T04:03:22Z","timestamp":1773288202954,"version":"3.50.1"},"reference-count":57,"publisher":"Oxford University Press (OUP)","issue":"12","license":[{"start":{"date-parts":[[2007,10,11]],"date-time":"2007-10-11T00:00:00Z","timestamp":1192060800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2007,12,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Mesenchymal stem cells (MSCs) have demonstrated efficacy as therapeutic vectors in rodent models of neurological diseases, but few studies have evaluated their safety and efficacy in a relevant large animal model. Previously, we reported that MSCs transplanted to the central nervous systems (CNS) of adult rhesus macaques engrafted at low levels without adversely affecting animal health, behavior, or motor function. Herein, we injected MSCs intracranially into 10 healthy infant macaques and quantified their engraftment levels and mapped their anatomical distribution in brain by real-time polymerase chain reaction using an sry gene-specific probe. These analyses revealed that MSC engraftment levels in brain were on average 18-fold higher with a maximal observed difference of 180-fold in neonates as compared with that reported previously for young adult macaques. Moreover, engraftment levels were 30-fold higher after injection of a low versus high cell dose and engrafted MSCs were nonrandomly distributed throughout the infant brain and localized to specific anatomical regions. Identification of unique subpopulations of macaque and human MSCs that express receptor proteins known to regulate tangential migration of interneurons may explain their migration patterns in brain. Extensive monitoring of infant transplant recipients using a battery of age appropriate tests found no evidence of any long-term adverse effects on the health or social, behavioral, cognitive, or motor abilities of animals up to 6 months post-transplant. Therefore, direct intracranial injection represents a safe means to deliver therapeutic levels of MSCs to the CNS. Moreover, expressed guidance receptors on MSC subpopulations may regulate migration of cells in the host brain.<\/jats:p>\n               <jats:p>Disclosure of potential conflicts of interest is found at the end of this article.<\/jats:p>","DOI":"10.1634\/stemcells.2007-0543","type":"journal-article","created":{"date-parts":[[2007,10,13]],"date-time":"2007-10-13T00:13:16Z","timestamp":1192234396000},"page":"3261-3270","source":"Crossref","is-referenced-by-count":35,"title":["Age- and Dose-Related Effects on MSC Engraftment Levels and Anatomical Distribution in the Central Nervous Systems of Nonhuman Primates: Identification of Novel MSC Subpopulations That Respond to Guidance Cues in Brain"],"prefix":"10.1093","volume":"25","author":[{"given":"Iryna A.","family":"Isakova","sequence":"first","affiliation":[{"name":"Center for Gene Therapy, Tulane University Health Science Center, New Orleans, Louisiana, 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