Related Experiment Video
Updated: Jun 21, 2025
09:01
Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells
Published on: March 7, 2025
321
B cells! Don't go the wrong way in this tumor
Guilhem Pupier1, Catherine Sautès-Fridman1
1Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université Paris Cité, Equipe Labellisée Ligue Nationale Contre le Cancer, Paris, France.
Immunity
|July 10, 2024
Summary
Tertiary lymphoid structures (TLSs) are linked to cancer survival and immunotherapy. This study reveals two distinct B cell reactions within tumors: one generating anti-tumor antibody-secreting cells (ASCs) in mature TLSs and another producing auto-reactive ASCs in immature TLSs.
Area of Science:
- Immunology
- Oncology
- Cancer Research
Background:
- Tertiary lymphoid structures (TLSs) are increasingly recognized for their association with patient survival and response to cancer immunotherapy.
- B cells play a crucial role within TLSs, influencing anti-tumor immunity.
Purpose of the Study:
- To investigate the distinct roles and mechanisms of B cell populations within different types of TLSs in a pan-cancer context.
- To differentiate the B cell reactions occurring in mature versus immature TLSs within tumors.
Main Methods:
- Development of a pan-cancer B cell atlas.
- Analysis of B cell populations and reactions within tumor-associated tertiary lymphoid structures.
- Characterization of antibody-secreting cells (ASCs) derived from germinal center and extra-follicular reactions.
Main Results:
- Germinal center reactions within mature TLSs generate anti-tumor antibody-secreting cells (ASCs) from B memory cells.
- Extra-follicular reactions within immature TLSs generate auto-reactive ASCs from memory B cells.
- These distinct B cell reactions co-exist within the tumor microenvironment.
Conclusions:
- The study elucidates the dual nature of B cell responses within TLSs, highlighting both beneficial (anti-tumor) and potentially detrimental (auto-reactive) outcomes.
- Understanding these distinct B cell pathways is critical for developing more effective cancer immunotherapies targeting TLSs.
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