Introduction to Cancer Immunology, Day 51

Cancer immunology is at the interface of immunology and oncology, seeking to understand how immune surveillance, tumour evasion, and therapeutic reactivation of immunity shape disease progression and therapy [1]. 

  • 𝗢𝗻𝗰𝗼𝗹𝘆𝘁𝗶𝗰 𝘃𝗶𝗿𝘂𝘀𝗲𝘀 are engineered to selectively infect and lyse tumour cells while releasing tumour antigens. 

  • 𝗖𝗔𝗥-𝗧 𝗰𝗲𝗹𝗹𝘀 (chimeric antigen receptor T cells) are patient-derived lymphocytes genetically modified to recognise tumour-specific antigens with high affinity, revolutionising haematologic cancer therapy. 

  • 𝗧𝗜𝗟 𝘁𝗵𝗲𝗿𝗮𝗽𝘆 (tumour-infiltrating lymphocytes) expands naturally occurring tumour-reactive T cells from patient biopsies and reinfuses them after activation ex vivo. 

  • 𝗕𝗶𝗧𝗘𝘀 (bispecific T-cell engagers) are small molecules that physically bridge T cells and tumour cells by binding both CD3 and a tumour antigen, triggering direct cytotoxicity. 

  • 𝗡𝗞-𝗖𝗔𝗥 𝗰𝗲𝗹𝗹𝘀 harness the innate cytotoxicity of natural killer cells and enhance it with engineered antigen recognition domains. 

  • 𝗠𝗮𝗰𝗿𝗼𝗽𝗵𝗮𝗴𝗲-𝗖𝗔𝗥 therapies program macrophages to both phagocytose tumour cells and remodel the suppressive tumour microenvironment (TME). 

  • 𝗗𝗲𝗻𝗱𝗿𝗶𝘁𝗶𝗰 𝗰𝗲𝗹𝗹 𝘃𝗮𝗰𝗰𝗶𝗻𝗲𝘀 use autologous antigen-loaded dendritic cells to present tumour peptides and prime T cells [2][3].  

A major obstacle in solid tumours remains the 𝘛𝘔𝘌, where hypoxia, stromal density, and suppressive myeloid populations impede immune cell infiltration and function [4]. 

𝗚𝗲𝗿𝗺𝗮𝗻 𝗥𝗲𝘀𝗲𝗮𝗿𝗰𝗵 
Pioneers like Prof. Hans-Georg Rammensee (Tübingen) and Prof. Henning Walczak (Cologne/UCL) shape immuno-oncology. Walczak’s research into cell death and inflammation mechanisms raises the question: 

Does inflammation initiate cancer, or does cancer provoke inflammation? Persistent inflammatory signalling may drive oncogenic transformation, while tumour-induced inflammation promotes immune escape [5]. 

𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻 𝗳𝗼𝗿 𝘁𝗵𝗲 𝗮𝘂𝗱𝗶𝗲𝗻𝗰𝗲:  Which emerging immuno-oncology modality (e.g., NK-CAR, macrophage-CAR, neo-antigen vaccine) do you believe holds the greatest promise — and why?  

Stay tuned for 𝗗𝗮𝘆 𝟱𝟮: 𝗜𝗺𝗺𝘂𝗻𝗲 𝗖𝗵𝗲𝗰𝗸𝗽𝗼𝗶𝗻𝘁𝘀 – 𝗕𝗮𝗹𝗮𝗻𝗰𝗶𝗻𝗴 𝗧𝗼𝗹𝗲𝗿𝗮𝗻𝗰𝗲 𝗮𝗻𝗱 𝗧𝘂𝗺𝗼𝘂𝗿 𝗜𝗺𝗺𝘂𝗻𝗶𝘁𝘆  

𝗥𝗲𝗳𝗲𝗿𝗲𝗻𝗰𝗲𝘀: 
1. 10.1038/nature10673 
2. 10.1186/s13045-021-01127-w 
3. DOI: 10.1007/s00108-020-00814-z 
4. 10.1186/s12929-022-00866-3 
5. DOI: 10.1038/s41418-024-01355-w 

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