In:
Blood, American Society of Hematology, Vol. 99, No. 11 ( 2002-06-01), p. 3916-3922
Kurzfassung:
We adoptively transferred donor-derived cytomegalovirus (CMV)-specific T-cell lines into 8 stem cell transplant recipients lacking CMV-specific T-cell proliferation. All patients, of whom one was infected by a CMV strain that was genotypically ganciclovir resistant, had received unsuccessful antiviral chemotherapy for more than 4 weeks. CMV-specific lines had been prepared by repetitive stimulation with CMV antigen, which increased the percentage of CMV-specific T cells and ablated alloreactivity completely even against patients mismatched for 1 to 3 HLA antigens. After transfer of 107 T cells/m2 at a median of 120 days (range, 79-479 days) after transplantation, no side effects were noticed. Despite cessation of antiviral chemotherapy, the CMV load dropped significantly in all 7 evaluable patients, with a maximal reduction after a median of 20 days (range, 5-31 days). In 2 patients with high virus load, the antiviral effect was only transient. One of these patients received a second T-cell infusion, which cleared the virus completely. At a median of 11 days after transfer, CMV-specific T-cell proliferation was demonstrated in 6 patients, and an increase in CMV-specific CD4+ T cells was demonstrated in 5 patients. In 6 patients, 1.12 to 41 CMV-specific CD8+ T cells/μL blood were detected at a median of 13 days after transfer, with an increase in all patients lacking CMV-specific CD8+ T cells prior to transfer. Hence, anti-CMV cellular therapy was successful in 5 of 7 patients, whereas in 2 of 7 patients, who received an intensified immune suppression at the time of or after T-cell therapy, only transient reductions in virus load were obtained.
Materialart:
Online-Ressource
ISSN:
1528-0020
,
0006-4971
DOI:
10.1182/blood.V99.11.3916
Sprache:
Englisch
Verlag:
American Society of Hematology
Publikationsdatum:
2002
ZDB Id:
1468538-3
ZDB Id:
80069-7
