PMID: 20646556Jul 22, 2010Paper

Allograft tolerance induced by FasL chimeric protein decorated donor splenocytes

Zhonghua wai ke za zhi [Chinese journal of surgery]
Xiao GuHaval Shirwan

Abstract

To investigate the feasibility of strategy of allograft tolerance induction by injection of FasL-decorated donor splenocytes. Chimeric FasL with core streptavidin (SA-FasL) was efficiently displayed on the surface of splenocytes by the technology of ProtEx™. Heterotopic heart transplant procedures were performed from donor WF rats to recipient ACI rats, F344 rats were used as third-party. Intraperitoneal injection of ACI rats with "decorated" WF splenocytes was used as the approach to induce tolerance in this study. According to different therapeutic strategies, three groups were set up: SA-FasL group (n = 23), SA group (n = 20) and naive splenocytes only group (n = 8). No treatment group was regarded as control (n = 10). Adoptive transfer was underwent with injection of splenocytes from tolerant recipients into naive ACI followed by heart transplant procedures. Mixed lymphocyte reaction (MLR) and third party transplantation were performed to detect allogenic tolerance. The injection of ACI rats with WF rat splenocytes displaying SA-FasL on their surface resulted in tolerance to donor, but not F344 third-party cardiac allografts. There were 70% cardiac allografts in SA-FasL group achieved long term survival, and it was signific...Continue Reading

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