17p Deletion is associated with resistance of B-cell chronic lymphocytic leukemia cells to in vitro fludarabine-induced apoptosis
Leukemia and Lymphoma, cilt.48, sa.2, ss.311-320, 2007 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 48 Sayı: 2
- Basım Tarihi: 2007
- Doi Numarası: 10.1080/10428190601059829
- Dergi Adı: Leukemia and Lymphoma
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.311-320
- Trakya Üniversitesi Adresli: Evet
Özet
We explored the relationship between the cytogenetic/biologic characteristics of B-chronic lymphocytic leukemia (B-CLL) cells and their tendency to undergo spontaneous or fludarabine-induced apoptosis in vitro. B cells from 36 B-CLL patients were incubated with or without fludarabine for 48 h. Apoptosis was determined by two assays: annexin V staining and DNA staining. Fluorescence in situ hybridization was used for detection of trisomy 12, 11q deletion, and 17p deletion. Bcl-2 and CD38 expressions were determined by flow cytometry. Five patients had 17p deletion, 6 had trisomy 12, and another 6 had 11q deletion. B-CLL cells with 17p deletion had significant resistance to apoptosis induced by fludarabine and a slight spontaneous resistance to apoptosis. Bcl-2 and CD38 were not associated with in vitro spontaneous and fludarabine-induced apoptosis. In conclusion, 17p deletion, which causes loss of p53 gene, is associated with resistance to fludarabine-induced apoptosis in vitro. New treatment modalities should be tried in B-CLL patients with 17p deletion.