Related Experiment Video
Updated: Jun 5, 2026

Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells
Published on: March 7, 2025
Tumor immunosurveillance in human cancers
Bernhard Mlecnik1, Gabriela Bindea, Franck Pagès
1INSERM U872, Integrative Cancer Immunology Team, 15 rue de l'Ecole de Médecine, Paris 75006, France.
The immune microenvironment of colorectal tumors is a crucial prognostic factor, surpassing traditional TNM staging for predicting patient survival. Understanding immune cell interactions offers new therapeutic targets for colorectal cancer.
Area of Science:
- Oncology
- Immunology
- Systems Biology
Background:
- Traditionally, the anatomic extent of tumor (TNM classification) has been the primary prognostic factor for colorectal cancer.
- Emerging evidence highlights the immune contexture of primary tumors as a critical determinant of patient survival.
Purpose of the Study:
- To investigate the prognostic significance of the tumor immune microenvironment in colorectal cancer.
- To explore tumoral and immunological markers for predicting patient outcomes and therapeutic targets.
Main Methods:
- Analysis of large cohorts of human cancers.
- Systems biology approaches to predict tumoral and immunological markers.
- Global analysis of the tumor microenvironment, focusing on immune cell characteristics and location.
Main Results:
- The nature, orientation, density, and location of adaptive immune cells within tumors significantly influence relapse risk.
- Immune cell density and location within the tumor provide prognostic value superior to TNM classification.
- Tumor invasion is statistically dependent on the host-immune reaction.
Conclusions:
- The strength of the host-immune reaction is a critical factor in colorectal cancer prognosis.
- Immune contexture offers a more powerful prognostic indicator than TNM staging.
- Understanding the immune microenvironment is essential for advancing cancer evolution insights and clinical practice.
Related Concept Videos
Tumor Immunotherapy
The Tumor Microenvironment
The Tumor Microenvironment
Cancer Vaccines
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
Mouse Models of Cancer Study
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
Loss of Tumor Suppressor Gene Functions
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...

