Role of caspase-10 in the death of acute leukemia cells

Guo,Wenjian; Dong,Aishu; Pan,Xiahui; Lin,Xiaoji; Lin,Ying; He,Muqing; Zhu,Baoling; Jin,Liming; Yao,Rongxing

doi:10.3892/ol.2016.4785

Role of caspase-10 in the death of acute leukemia cells

Authors:
- Wenjian Guo
- Aishu Dong
- Xiahui Pan
- Xiaoji Lin
- Ying Lin
- Muqing He
- Baoling Zhu
- Liming Jin
- Rongxing Yao
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Affiliations: Department of Medicine, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 0577, P.R. China
Published online on: June 27, 2016 https://doi.org/10.3892/ol.2016.4785
Pages: 1623-1629

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Abstract

Autophagy can protect cells from stress, but can also induce cancer cell death. Caspase‑10 is now considered to be a factor that is associated with autophagy in cancer. The present study therefore investigated whether caspase‑10 affects autophagy in acute leukemia cells. The rates of survival vs. apoptosis in acute leukemia HL‑60 and Jurkat cells treated with drugs were tested using cell viability assays and flow cytometry, and the levels of caspase‑3 and ‑10 were tested by western blotting. In HL‑60 cells that were treated with chemotherapy drugs combined with a caspase‑10 inhibitor, the rate of survival decreased significantly compared with HL‑60 cells treated with chemotherapy drugs alone. In contrast, the rate of survival of Jurkat cells treated with chemotherapy drugs combined with the caspase‑10 inhibitor increased significantly compared with Jurkat cells treated with chemotherapy drugs alone. The results of the flow cytometry and western blotting showed that the changes in the survival rate may be caused by a change in the amount of apoptosis occurring in the Jurkat cells treated with chemotherapy drugs combined with the caspase‑10 inhibitor. However, in HL‑60 cells undergoing this combination treatment, the change in the survival rate was not caused by a change in the rate of apoptosis. When HL‑60 cells were treated with the chemotherapy drugs combined with the caspase‑10 inhibitor and the autophagy inhibitor 3‑methyl adenine, the survival rate increased, whereas the rate of apoptosis did not change. These results show that caspase‑10 may be associated with autophagy in acute myeloid leukemia cells, but not in acute lymphatic leukemia cells.

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