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Published in: BMC Cancer 1/2023

Open Access 01-12-2023 | Lymphoma | Research

Peripheral immune cell profiling of double-hit lymphoma by mass cytometry

Authors: Tao Lei, Gongqiang Wu, Yongjin Xu, Weihao Zhuang, Jialiang Lu, Shuiyun Han, Yuxin Zhuang, Xiaowu Dong, Haiyan Yang

Published in: BMC Cancer | Issue 1/2023

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Abstract

Background

Double-hit or Triple-hit lymphoma (DHL/THL) is a subset of high-grade B cell lymphoma harboring rearrangements of MYC and BCL2 and/or BCL6, and usually associate with aggressive profile, while current therapies tend to provide poor clinical outcomes and eventually relapsed. Further explorations of DHL at cellular and molecular levels are in demand to offer guidance for clinical activity.

Methods

We collected the peripheral blood of DHL patients and diffused large B cell lymphoma (DLBCL) patients from single institute and converted them into PBMC samples. Mass cytometry was then performed to characterize these samples by 42 antibody markers with samples of healthy people as control. We divided the immune cell subtypes based on the expression profile of surface antigens, and the proportion of each cell subtype was also analyzed. By comparing the data of the DLBCL group and the healthy group, we figured out the distinguished immune cell subtypes of DHL patients according to their abundance and marker expression level. We further analyzed the heterogeneity of DHL samples by pairwise comparison based on clinical characteristics.

Results

We found double-positive T cells (DPT) cells were in a significantly high percentage in DHL patients, whereas the ratio of double-negative T cells (DNT) was largely reduced in patients. Besides, CD38 was uniquely expressed at a high level on some naïve B cells of DHL patients, which could be a marker for the diagnosis of DHL (distinguishing from DLBCL), or even be a drug target for the treatment of DHL. In addition, we illustrated the heterogeneity of DHL patients in terms of immune cell landscape, and highlighted TP53 as a major factor that contributes to the heterogeneity of the T cells profile.

Conclusion

Our study demonstrated the distinct peripheral immune cell profile of DHL patients by contrast to DLBCL patients and healthy people, as well as the heterogeneity within the DHL group, which could provide valuable guidance for the diagnosis and treatment of DHL.
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Metadata
Title
Peripheral immune cell profiling of double-hit lymphoma by mass cytometry
Authors
Tao Lei
Gongqiang Wu
Yongjin Xu
Weihao Zhuang
Jialiang Lu
Shuiyun Han
Yuxin Zhuang
Xiaowu Dong
Haiyan Yang
Publication date
01-12-2023
Publisher
BioMed Central
Keyword
Lymphoma
Published in
BMC Cancer / Issue 1/2023
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/s12885-023-10657-0

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