Alien-driven diversity and alien-selected escape: a rationale for allogeneic cancer immunotherapy

Area of Science:

• Immunology
• Oncology
• Genetics

Background:

• Histocompatibility antigens play a role in immune recognition of 'self' versus 'non-self'.
• Tumor cells can express 'alien' antigens, complicating immune surveillance.
• Existing theories struggle to fully explain immune evasion by tumors.

Purpose of the Study:

• To present two novel theories on histocompatibility antigen function in cancer.
• To explain the presence of alien antigens on tumor cells.
• To propose new immunotherapy strategies.

Main Methods:

• Theoretical framework development.
• Review and synthesis of existing data from mouse and human studies.
• Discussion of potential immunotherapy approaches.

Main Results:

• Alien-driven diversity theory: Exposure to cross-reactive alloantigens during development enhances pathogen recognition.
• Alien-selected escape theory: Tumorigenic pathogens may mask infected cells as 'self' by altering H* antigens.
• Data supports that clinically apparent tumors have escaped host immune responses.

Conclusions:

• Tumor immune escape mechanisms involve histocompatibility antigens.
• Allogeneic cell immunotherapy may overcome patient unresponsiveness to autologous tumors.
• Further research into antigen presentation and immune evasion is warranted.