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Updated: Oct 8, 2025

Tumor Transplantation for Assessing the Dynamics of Tumor-Infiltrating CD8+ T Cells in Mice
Published on: June 12, 2021
Lessons from transmissible cancers for immunotherapy and transplant
Rafael Cardoso Maciel Costa Silva1, Carolina Panis2, Bruno Ricardo Barreto Pires3
1Laboratory of Immunoreceptors and Signaling, Instituto de Biofísica Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio De Janeiro, Brazil.
Horizontal cancer transmission between vertebrates requires cell transfer and a suppressed immune response. Studying transmissible tumors offers insights into major histocompatibility complex (MHC) mechanisms and immune rejection, relevant to cancer and transplant biology.
Area of Science:
- Comparative oncology
- Immunology
- Transplant biology
Background:
- Horizontal cancer transmission is a rare phenomenon observed in some vertebrates.
- Successful transmission necessitates cancer cell dissemination and recipient immune tolerance.
- Transmissible cancers serve as unique models for studying immune responses and major histocompatibility complex (MHC) interactions.
Purpose of the Study:
- To explore the mechanisms of horizontal cancer transmission in vertebrates.
- To draw parallels between immune-mediated tissue rejection and transmissible cancers.
- To discuss cellular and molecular aspects of cancer immunotherapy and anti-rejection strategies.
Main Methods:
- Review of existing literature on transmissible cancers and immune responses.
- Comparative analysis of immune-mediated rejection in transplantation and cancer.
- Discussion of immunological and molecular pathways involved.
Main Results:
- Horizontal transmission depends on cancer cell transfer and host immune evasion.
- Major histocompatibility complex (MHC) plays a crucial role in both tissue rejection and transmissible cancer recognition.
- Insights from transmissible cancers can inform cancer immunotherapy and transplant rejection therapies.
Conclusions:
- Transmissible cancers provide valuable insights into immune system interactions and rejection mechanisms.
- Understanding these mechanisms can advance cancer immunotherapy and transplant tolerance strategies.
- Further research into MHC and immune evasion in transmissible cancers is warranted.
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