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Updated: Mar 27, 2026

Flow-sorting and Exome Sequencing of the Reed-Sternberg Cells of Classical Hodgkin Lymphoma
Published on: June 10, 2017
Reed-Sternberg cells express CD161 and lectin-like transcript 1 in Hodgkin lymphoma
Anwar Rjoop1, Rania Al-Samama'h2, Laith Al-Eitan3
1Department of Pathology and Microbiology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan.
Insights
This study investigated CD161 and Lectin-like transcript 1 (LLT1) expression in Hodgkin lymphoma (HL) Reed-Sternberg cells. No significant association was found with HL subtype, stage, or EBV status, but findings suggest potential for immunotherapy.
Area of Science:
- Immunology
- Oncology
- Cell Biology
Background:
- Hodgkin lymphoma (HL) is a B-cell malignancy characterized by Reed-Sternberg (RS) cells.
- The CD161/LLT1 axis is an emerging immune regulator in cancer, but its role in HL is unclear.
Purpose of the Study:
- To characterize CD161 and LLT1 expression in HL RS cells.
- To correlate expression with clinical-pathological features and EBV status.
Main Methods:
- Immunohistochemistry was used to analyze CD161 and LLT1 expression in 60 HL FFPE samples.
- Expression patterns and correlations with HL subtype, stage, and EBV status were assessed.
Main Results:
- LLT1 expression was predominantly cytoplasmic in RS cells.
- CD161 expression was detected in RS cells at the protein level for the first time.
- No significant associations were found between CD161/LLT1 expression and HL subtype, stage, or EBV status.
Conclusions:
- This study provides the first characterization of CD161 and LLT1 in HL RS cells.
- These molecules may represent potential therapeutic targets for HL immunotherapy.
Introduction:
Hodgkin lymphoma (HL) is a B-cell lymphoma, and it is diagnosed by the presence of Reed-Sternberg (RS) cells surrounded by heavy immune cell infiltration in a tissue biopsy. CD161 (Cluster of differentiation 161) and its ligand Lectin-like transcript 1 (LLT1) have recently emerged as a novel immune-regulatory axis that modulates natural killer (NK) and T cell-mediated function in cancer and inflammatory conditions, but their expression in RS cells and association with HL patients' clinical-pathological features remain poorly defined.
Methods:
In this study, 60 formalin-fixed paraffin-embedded (FFPE) tissue samples were collected from patients in Northern Jordan. In addition to 60 FFPE samples of positive control from benign reactive lymph node tissues and tonsils. Immunohistochemistry (IHC) was performed to assess the expression levels and patterns (cytoplasmic, membranous, or both) of CD161 and LLT1 in RS cells and then correlated with EBV status and clinical-pathological features such as subtype and disease stages.
Results:
LLT1 expression in RS cells was predominantly cytoplasmic, with occasional dual cytoplasmic and membranous expressions. This is the first study in the literature to detect CD161 expression in RS cells as neoplastic cells at protein level. Statistical analyses showed no significant association between LLT1 or CD161 expression in RS cells and HL subtype, stage or EBV status.
Discussion:
These findings provide the first characterization of LLT1 and CD161 expression in RS cells and suggest their potential use as a target in immunotherapy approaches in HL.
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