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Altouri S, Allan D, Atkins H, Fulcher J, Huebsch L, Kekre N, Maze D, Ramsay T, Samant R, Bredeson C, Sabloff M. Total body irradiation (18 Gy) without chemotherapy as conditioning for allogeneic hematopoietic cell transplantation in refractory acute myeloid leukemia. Bone Marrow Transplant 2020; 55:1454-1456. [PMID: 31992848 DOI: 10.1038/s41409-020-0799-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 12/07/2019] [Accepted: 01/16/2020] [Indexed: 01/26/2023]
Affiliation(s)
- Sultan Altouri
- Division of Hematology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada.,Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - David Allan
- Division of Hematology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada.,Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Harold Atkins
- Division of Hematology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada.,Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Jill Fulcher
- Division of Hematology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada.,Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Lothar Huebsch
- Division of Hematology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada.,Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Natasha Kekre
- Division of Hematology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada.,Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Dawn Maze
- Department of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Tim Ramsay
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, ON, Canada.,Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Rajiv Samant
- Department of Radiation Oncology, The Ottawa Hospital Cancer Centre, Ottawa, ON, Canada
| | - Christopher Bredeson
- Division of Hematology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada.,Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Mitchell Sabloff
- Division of Hematology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada. .,Ottawa Hospital Research Institute, Ottawa, ON, Canada.
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Chmara J, Browning JWL, Atkins H, Sabloff M, McKay BC. Rapid Decrease in KRT14 and TP53 mRNA Expression in the Buccal Mucosa of Patients Receiving Total-Body Irradiation for Allogeneic Stem Cell Transplantation. Radiat Res 2017; 189:213-218. [PMID: 29232178 DOI: 10.1667/rr14897.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The only curative treatment option for relapsed patients with acute myeloid leukemia (AML) is allogeneic stem cell transplantation. Depletion of hematopoietic stem cells and leukemic blast cells is achieved through the systemic administration of DNA damaging agents, including total-body irradiation (TBI) prior to transplantation. Since other tissues are radiosensitive, the identification of biomarkers could facilitate the management of additional toxicities. Buccal keratinocytes are readily accessible and could provide a source of cells for RNA analysis. In this study, we obtained miRNAs and mRNAs from daily buccal swabs collected from patients undergoing allogeneic stem cell transplantation. Unexpectedly, there was no prominent p53-induced mRNA or miRNA response in these samples, despite the fact that the p53 pathway is a well-characterized radiation-inducible response. Instead, the expression of mRNAs encoding p53 and cytokeratin 14 (TP53 and KRT14, respectively) decreased precipitously within hours of the first radiation treatment. These patients went on to develop oral mucositis, however, it is unclear whether TP53 and/or KRT14 expression are predictive of this adverse event. Larger scale analysis of buccal epithelial samples from patients undergoing allogeneic stem cell transplantation appears to be warranted.
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Affiliation(s)
| | | | - H Atkins
- c Division of Hematology, Department of Medicine, University of Ottawa, Ottawa, Canada; and.,d Ottawa Hospital Research Institute, Ottawa, Canada
| | - M Sabloff
- c Division of Hematology, Department of Medicine, University of Ottawa, Ottawa, Canada; and.,d Ottawa Hospital Research Institute, Ottawa, Canada
| | - B C McKay
- a Department of Biology and.,b Institute of Biochemistry, Carleton University, Ottawa, Canada
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