PMID- 8932011 OWN - NLM STAT- MEDLINE DCOM- 19970303 LR - 20191101 IS - 1269-3286 (Print) IS - 1269-3286 (Linking) VI - 38 IP - 2 DP - 1996 Apr TI - Gene transfer applied to the modulation of alloreactivity. PG - 221-4 AB - Allogenic hematopoietic stem cell transplantation is associated with a severe complication induced by the T-cells present in the graft: graft-vs-host disease (GVHD). While effectively preventing GVHD, ex vivo T-lymphocyte depletion of the graft unfortunately increases graft rejection and reduces the graft-vs-leukemia (GVL) effect. The ex vivo transfer to the herpes simplex thymidine kinase (HS-tk) suicide gene into T-cells before their infusion with the hematopoietic stem cells should allow for selective in vivo depletion of these T-cells with ganciclovir (GCV) if subsequent GVHD was to occur. In patients not experiencing GVHD, and therefore at a higher risk of relapse, one could preserve the beneficial effects of the donor T-cells on tumor control. Lastly, the early presence of donor T-cells in all patients should contribute to successful engraftment. We have demonstrated that retroviral-mediated transfer of HS-tk and Neomycine resistance genes in T-lymphocytes, followed by G418 selection, results in T-cells specifically inhibited by GCV with no bystander effect. In a phase I study, escalating amounts of HS-tk expressing T-cells will be infused in conjunction with a T-cell depleted marrow graft to allogenic HLA identical recipients. Toxicity, survival, alloreactivity and GCV-sensitivity of the gene-modified cells will be monitored. If successful, such an approach could significantly contribute to expanding the use of alloreactivity as a treatment modality. FAU - Tiberghien, P AU - Tiberghien P AD - Laboratoire de Therapeutique, Service d'Hematologie, CHU, Besancon, France. FAU - Cahn, J Y AU - Cahn JY FAU - Contassot, E AU - Contassot E FAU - Ferrand, C AU - Ferrand C FAU - Reynolds, C W AU - Reynolds CW FAU - Herve, P AU - Herve P LA - eng PT - Journal Article PT - Review PL - France TA - Hematol Cell Ther JT - Hematology and cell therapy JID - 9613253 RN - EC 2.7.1.21 (Thymidine Kinase) SB - IM MH - *Gene Transfer Techniques MH - *Hematopoietic Stem Cell Transplantation MH - Humans MH - Leukemia/therapy MH - Simplexvirus/enzymology MH - Thymidine Kinase/genetics MH - Transplantation, Homologous RF - 25 EDAT- 1996/04/01 00:00 MHDA- 1996/04/01 00:01 CRDT- 1996/04/01 00:00 PHST- 1996/04/01 00:00 [pubmed] PHST- 1996/04/01 00:01 [medline] PHST- 1996/04/01 00:00 [entrez] AID - 10.1007/s00282-996-0221-7 [doi] PST - ppublish SO - Hematol Cell Ther. 1996 Apr;38(2):221-4. doi: 10.1007/s00282-996-0221-7.