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Uemura Y, Isobe Y, Uchida A, Asano J, Nishio Y, Sakai H, Hoshikawa M, Takagi M, Nakamura N, Miura I. Expression of activating natural killer-cell receptors is a hallmark of the innate-like T-cell neoplasm in peripheral T-cell lymphomas. Cancer Sci 2018; 109:1254-1262. [PMID: 29363227 PMCID: PMC5891177 DOI: 10.1111/cas.13512] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 12/20/2017] [Accepted: 01/16/2018] [Indexed: 12/17/2022] Open
Abstract
Peripheral T‐ or natural killer (NK)‐cell lymphomas are rare and difficult‐to‐recognize diseases. It remains arduous to distinguish between NK cell‐ and cytotoxic T‐lymphocyte‐derived lymphomas through routine histological evaluation. To clarify the cells of origin, we focused on NK‐cell receptors and examined the expression using immunohistochemistry in 22 cases with T‐ and NK‐cell neoplasms comprising angioimmunoblastic T‐cell lymphoma, anaplastic lymphoma kinase (ALK)‐positive and ‐negative anaplastic large‐cell lymphomas, extranodal NK/T‐cell lymphoma, nasal type, monomorphic epitheliotropic intestinal T‐cell lymphoma, aggressive NK‐cell leukemia, and other peripheral T‐cell lymphomas. Inhibitory receptor leukocyte immunoglobulin‐like receptor subfamily B member 1 (LILRB1) was detected in 14 (64%) cases, whereas activating receptors DNAM1, NKp46, and NKG2D were expressed in 7 (32%), 9 (41%), and 5 (23%) cases, respectively. Although LILRB1 was detected regardless of the disease entity, the activating NK‐cell receptors were expressed predominantly in TIA‐1‐positive neoplasms (DNAM1, 49%; NKp46, 69%; and NKG2D, 38%). In addition, NKp46 and NKG2D were detected only in NK‐cell neoplasms and cytotoxic T‐lymphocyte‐derived lymphomas including monomorphic epitheliotropic intestinal T‐cell lymphoma. One Epstein‐Barr virus‐harboring cytotoxic T‐lymphocyte‐derived lymphoma mimicking extranodal NK/T‐cell lymphoma, nasal type lacked these NK‐cell receptors, indicating different cell origin from NK and innate‐like T cells. Furthermore, NKG2D expression showed a negative impact on survival among the 22 examined cases, which mainly received the standard chemotherapy regimen (log‐rank test, P = .024). We propose that the presence of activating NK‐cell receptors may provide new insights into understanding peripheral T‐cell lymphomas and characterizing them as innate‐like T‐cell neoplasm.
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Affiliation(s)
- Yu Uemura
- Division of Hematology & Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Yasushi Isobe
- Division of Hematology & Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Akiko Uchida
- Division of Hematology & Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Junko Asano
- Division of Hematology & Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Yuji Nishio
- Division of Hematology & Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Hirotaka Sakai
- Division of Hematology & Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Masahiro Hoshikawa
- Department of Pathology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Masayuki Takagi
- Department of Pathology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Naoya Nakamura
- Department of Pathology, Tokai University School of Medicine, Isehara, Japan
| | - Ikuo Miura
- Division of Hematology & Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
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