期刊
INTERNATIONAL JOURNAL OF CANCER
卷 148, 期 1, 页码 150-160出版社
WILEY
DOI: 10.1002/ijc.33202
关键词
B cell lymphoma; cytarabine; mantle cell lymphoma; resistance; SAMHD1
类别
资金
- Bundesministerium fur Bildung und Forschung
- Hairy Cell Leukemia Foundation
- Heidelberg Research Centre for Molecular Medicine
- Robert Bosch Stiftung
- Universitat Heidelberg
SAMHD1 protein expression was not significantly associated with the outcome of mantle cell lymphoma (MCL) patients upon cytarabine-based treatment, but inversely correlated with the in vitro response to cytarabine in B cell lymphoma cell lines. This correlation could be reversed by combining cytarabine with other chemotherapeutics.
The sterile alpha motif and histidine-aspartic domain-containing protein 1 (SAMHD1) has been demonstrated to predict the response to high-dose cytarabine consolidation treatment in acute myeloid leukemia patients. Here, we evaluated SAMHD1 as potential biomarker for the response to high-dose cytarabine in mantle cell lymphoma (MCL) patients. We quantified SAMHD1 protein expression and determined the mutation status in patients of the MCL Younger and Elderly trials (n = 189), who had received high-dose cytarabine- or fludarabine-based polychemotherapy. Additionally, we quantified SAMHD1 expression in B cell lymphoma cell lines and exposed them to cytarabine, fludarabine, and clinically relevant combinations. Across both trials investigated,SAMHD1mutations had a frequency of 7.1% (n = 13) and did not significantly affect the failure-free survival (FFS,P= .47). In patients treated with high-dose cytarabine- or fludarabine-containing regimes, SAMHD1 expression was not significantly associated with FFS or complete remission rate. SAMHD1 expression in B cell lymphoma cell lines, however, inversely correlated with their in vitro response to cytarabine as single agent (R= .65,P= .0065). This correlation could be reversed by combining cytarabine with other chemotherapeutics, such as oxaliplatin and vincristine, similar to the treatment regime of the MCL Younger trial. We conclude that this might explain why we did not observe a significant association between SAMHD1 protein expression and the outcome of MCL patients upon cytarabine-based treatment.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据