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Mishra SV, Banerjee A, Sarkar D, Thangarathnam V, Bagal B, Hasan SK, Dutt S. DNA-PKcs-mediated transcriptional regulation of TOP2B drives chemoresistance in acute myeloid leukemia. J Cell Sci 2024; 137:jcs261931. [PMID: 38240344 DOI: 10.1242/jcs.261931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 01/03/2024] [Indexed: 02/15/2024] Open
Abstract
Anthracyclines, topoisomerase II enzyme poisons that cause DNA damage, are the mainstay of acute myeloid leukemia (AML) treatment. However, acquired resistance to anthracyclines leads to relapse, which currently lacks effective treatment and is the cause of poor survival in individuals with AML. Therefore, the identification of the mechanisms underlying anthracycline resistance remains an unmet clinical need. Here, using patient-derived primary cultures and clinically relevant cellular models that recapitulate acquired anthracycline resistance in AML, we have found that GCN5 (also known as KAT2A) mediates transcriptional upregulation of DNA-dependent protein kinase catalytic subunit (DNA-PKcs) in AML relapse, independently of the DNA-damage response. We demonstrate that anthracyclines fail to induce DNA damage in resistant cells, owing to the loss of expression of their target enzyme, TOP2B; this was caused by DNA-PKcs directly binding to its promoter upstream region as a transcriptional repressor. Importantly, DNA-PKcs kinase activity inhibition re-sensitized AML relapse primary cultures and cells resistant to mitoxantrone, and abrogated their tumorigenic potential in a xenograft mouse model. Taken together, our findings identify a GCN5-DNA-PKcs-TOP2B transcriptional regulatory axis as the mechanism underlying anthracycline resistance, and demonstrate the therapeutic potential of DNA-PKcs inhibition to re-sensitize resistant AML relapse cells to anthracycline.
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MESH Headings
- Humans
- Mice
- Animals
- DNA-Activated Protein Kinase/genetics
- DNA-Activated Protein Kinase/metabolism
- Drug Resistance, Neoplasm/genetics
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/metabolism
- DNA Topoisomerases, Type II/genetics
- DNA Topoisomerases, Type II/metabolism
- DNA Topoisomerases, Type II/therapeutic use
- Anthracyclines/pharmacology
- Anthracyclines/therapeutic use
- Antibiotics, Antineoplastic
- Recurrence
- DNA
- Poly-ADP-Ribose Binding Proteins
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Affiliation(s)
- Saket V Mishra
- Shilpee Dutt Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai 410210, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400085, India
| | - Archisman Banerjee
- Shilpee Dutt Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai 410210, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400085, India
| | - Debashmita Sarkar
- Shilpee Dutt Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai 410210, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400085, India
| | - Vishnuvarthan Thangarathnam
- Shilpee Dutt Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai 410210, India
| | - Bhausaheb Bagal
- Department of Medical Oncology, Tata Memorial Hospital, Tata Memorial Centre, Mumbai 400012, India
| | - Syed K Hasan
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400085, India
- Cell and Tumor Biology Group, Advanced Centre for Treatment Research Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai 410210, India
| | - Shilpee Dutt
- Shilpee Dutt Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai 410210, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400085, India
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