Abstract:
:Posttransplant infusion of viable donor bone marrow cells (DBMC) has been shown in our previous studies to promote acceptance of incompatible kidney allografts in rhesus monkeys after treatment with polyclonal antithymocyte globulin to deplete peripheral T-lymphocytes. In this nonhuman primate model, the infusion of the DBMC is requisite for the induction of functional graft tolerance and specific MLR and CTLp unresponsiveness, although the relevant role and fate of bone marrow-derived chimeric cells is uncertain. Standard immunological and molecular techniques applied to this monkey model are unable to differentiate between chimeric cells derived from the infused DBMC and those derived from allograft-borne passenger leukocyte emigrants. To distinguish chimerism due to infused DBMC, we transduced DBMC with a functional neomycin resistance gene (Neo(r)) using the retroviral vector pHSG-Neo.Neo(r)-transduced BMC were infused into recipients approximately 2 wk after kidney transplantation and treatment with rabbit antithymocyte globulin. No maintenance immunosuppressive drugs were given. Genomic DNA isolated from peripheral blood leukocytes was used to monitor the presence ofNeo(r)-positive cells. Tissue samples obtained at necropsy also were assessed forNeo(r)-positive chimeric cells. The presence of DBMC-derived chimerism was assessed by polymerase chain reaction usingNeo(r) sequence-specific primers (PCR-SSP). Chimerism was detectable in recipient tissues at various times for up to 6 mo after DBMC infusion. These studies using gene transduction methodology indicate that a stable genetic marker can provide capability to examine DBMC-derived chimerism for prolonged periods in a nonhuman primate model. This approach should facilitate future studies in preclinical models to study the role and type of chimeric cell lineages in relation to functional allograft tolerance.
journal_name
Cell Transplantjournal_title
Cell transplantationauthors
Smith JP,Kasten-Jolly J,Rebellato L,Haisch CE,Thomas JMdoi
10.1016/s0963-6897(97)00005-5subject
Has Abstractpub_date
1997-07-01 00:00:00pages
369-76issue
4eissn
0963-6897issn
1555-3892pii
S0963689797000055journal_volume
6pub_type
杂志文章abstract::Liver transplantation is the only existing modality for treating decompensated liver cirrhosis. Several factors, such as nonavailability of donors, combined with operative risks, complications associated with rejection, usage of immunosuppressive agents, and cost intensiveness, make this strategy available to only a f...
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journal_title:Cell transplantation
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abstract::We investigated the effect of the activation of complement in human serum on isolated adult porcine islets using an in vitro model of pig-to-human islet transplantation. Pancreata were obtained from slaughterhouse pigs (6-8 mo old). Islets were prepared by intraductal collagenase digestion followed by purification on ...
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abstract::Cellular transplantation strategies utilizing intraspinal or intrathecal olfactory ensheathing cells (OECs) have been reported as beneficial for spinal cord injury (SCI). However, there are many disadvantages of these methods, including additional trauma to the spinal cord parenchyma and technical challenges. Therefor...
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