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Song JY, Pan Z. Aberrant expression in lymphoma, a diagnostic pitfall. Hum Pathol 2024:105706. [PMID: 39674282 DOI: 10.1016/j.humpath.2024.105706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2024] [Revised: 12/04/2024] [Accepted: 12/08/2024] [Indexed: 12/16/2024]
Abstract
One of the major difficulties in practical hematopathology is to accurately assign cell lineage and thus ensure proper classification of lymphomas. The lineage-specific markers of lymphoma are detected by immunohistochemistry or flow cytometry immunophenotypic methods. However, aberrant gain or loss of these markers is occasionally encountered during daily practice, which often creates diagnostic challenges. In addition, lymphoma may aberrantly express non-hematopoietic markers, and vice versa. This review article provides an overview of aberrant gain of expression of lineage-associated antigens in mature lymphoid neoplasms, including recommendations to avoid diagnostic pitfalls and ultimately to reach accurate diagnoses.
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Affiliation(s)
- Joo Y Song
- Department of Pathology, City of Hope National Medical Center, Duarte, CA, 91010, USA
| | - Zenggang Pan
- Department of Pathology, University of Colorado School of Medicine, Aurora, CO, 80045, USA.
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Shiroshita K, Kohashi S, Sakamoto M, Kudo H, Nakanishi K, Toyama T. Aberrant CD4 expression in plasmablastic transformation of multiple myeloma. EJHAEM 2024; 5:629-630. [PMID: 38895083 PMCID: PMC11182412 DOI: 10.1002/jha2.935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 05/08/2024] [Indexed: 06/21/2024]
Affiliation(s)
- Kohei Shiroshita
- Department of HematologyFederation of National Public Service Personnel Mutual Aid Associations Tachikawa HospitalTokyoJapan
- Division of Hematology, Department of MedicineKeio University School of MedicineTokyoJapan
| | - Sumiko Kohashi
- Department of HematologyFederation of National Public Service Personnel Mutual Aid Associations Tachikawa HospitalTokyoJapan
| | - Miki Sakamoto
- Department of HematologyFederation of National Public Service Personnel Mutual Aid Associations Tachikawa HospitalTokyoJapan
- Division of Hematology, Department of MedicineKeio University School of MedicineTokyoJapan
| | - Himari Kudo
- Department of HematologyFederation of National Public Service Personnel Mutual Aid Associations Tachikawa HospitalTokyoJapan
| | - Kuniaki Nakanishi
- Department of PathologyFederation of National Public Service Personnel Mutual Aid Associations Tachikawa HospitalTokyoJapan
| | - Takaaki Toyama
- Department of HematologyFederation of National Public Service Personnel Mutual Aid Associations Tachikawa HospitalTokyoJapan
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Zhang Y, Guo C, Zhou Y, Zhang W, Zhu Z, Wang W, Wan Y. A biphenotypic lymphocyte subset displays both T- and B-cell functionalities. Commun Biol 2024; 7:28. [PMID: 38182721 PMCID: PMC10770049 DOI: 10.1038/s42003-023-05719-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 12/18/2023] [Indexed: 01/07/2024] Open
Abstract
T cell/B cell mixed phenotypic lymphocytes have been observed in different disease contexts, yet their presence and function in physiological conditions remain elusive. Here, we provide evidence for the existence of a lymphocyte subset endogenously expressing both T- and B-cell lineage markers in mice. The majority of these T/B phenotypic lymphocytes (CD3+CD19+) show an origin of pro/pre B cells and distribute widely in mouse bone marrow, lymph nodes, spleen, and peripheral blood. Functional assays show that these biphenotypic lymphocytes can be activated through stimulating TCR or BCR signaling pathways. Moreover, we show that these cells actively participate both the humoral and cellular immune responses elicited by vaccination. Compared to conventional T cells, these biphenotypic lymphocytes can secrete a higher level of IL-2 but a lower level of TNF-α upon antigen specific stimulation. An equivalent lymphocyte subset is found in freshly isolated human PBMCs and exhibits similar functionality, albeit at a lower frequency than in mice.
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Affiliation(s)
- Yifan Zhang
- Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Key Laboratory of Laboratory Medicine of Henan Province, Zhengzhou, China
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Laboratory Medicine, Shanghai Public Health Clinical Center, Shanghai, China
| | - Cuiyuan Guo
- Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Key Laboratory of Laboratory Medicine of Henan Province, Zhengzhou, China
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Laboratory Medicine, Shanghai Public Health Clinical Center, Shanghai, China
| | - Yigong Zhou
- Life Science Department, Faculty of Agricultural and Environmental Sciences, Macdonald Campus of McGill University, Quebec, Canada
| | - Wenhong Zhang
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhaoqin Zhu
- Department of Laboratory Medicine, Shanghai Public Health Clinical Center, Shanghai, China.
| | - Wanhai Wang
- Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Key Laboratory of Laboratory Medicine of Henan Province, Zhengzhou, China.
| | - Yanmin Wan
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.
- Shanghai Huashen Institute of Microbes and Infections, Shanghai, China.
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