GSBS Student Publications

Title

Viral abrogation of stem cell transplantation tolerance causes graft rejection and host death by different mechanisms

GSBS Program

Biochemistry & Molecular Pharmacology

Publication Date

2002-06-11

UMMS Affiliation

Graduate School of Biomedical Sciences; Department of Pathology; Department of Molecular Genetics and Microbiology; Department of Medicine, Diabetes Division

Document Type

Article

Disciplines

Life Sciences | Medicine and Health Sciences

Abstract

Tolerance-based stem cell transplantation using sublethal conditioning is being considered for the treatment of human disease, but safety and efficacy remain to be established. We have shown that mouse bone marrow recipients treated with sublethal irradiation plus transient blockade of the CD40-CD154 costimulatory pathway develop permanent hematopoietic chimerism across allogeneic barriers. We now report that infection with lymphocytic choriomeningitis virus at the time of transplantation prevented engraftment of allogeneic, but not syngeneic, bone marrow in similarly treated mice. Infected allograft recipients also failed to clear the virus and died. Postmortem study revealed hypoplastic bone marrow and spleens. The cause of death was virus-induced IFN-alphabeta. The rejection of allogeneic bone marrow was mediated by a radioresistant CD8(+)TCR-alphabeta(+)NK1.1(-) T cell population. We conclude that a noncytopathic viral infection at the time of transplantation can prevent engraftment of allogeneic bone marrow and result in the death of sublethally irradiated mice treated with costimulation blockade. Clinical application of stem cell transplantation protocols based on costimulation blockade and tolerance induction may require patient isolation to facilitate the procedure and to protect recipients.

Source

J Immunol. 2002 Jun 15;168(12):6047-56.

Journal/Book/Conference Title

Journal of immunology (Baltimore, Md. : 1950)

Related Resources

Link to article in PubMed

PubMed ID

12055213

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