NK cell-based cancer immunotherapy: from basic biology to clinical application

Area of Science:

• Immunology
• Oncology
• Cell Biology

Background:

• Natural killer (NK) cells are vital for innate immune defense against tumors, acting independently of antigen specificity and MHC matching.
• Tumor cells frequently develop mechanisms to evade NK cell surveillance, necessitating a deeper understanding of NK cell regulation within the tumor microenvironment.
• Optimizing NK cell function is critical for advancing current cell-based cancer immunotherapies.

Purpose of the Study:

• To elaborate on the biological features and molecular mechanisms governing NK cell anti-tumor activity.
• To review current clinical strategies employing NK cells for cancer therapy.
• To highlight the potential of NK cell-based approaches in future cancer immunotherapy.

Main Methods:

• Review of existing literature on NK cell biology and anti-tumor functions.
• Analysis of mechanisms regulating NK cell phenotype and function in the context of tumors.
• Overview of clinical applications including cytokine therapy, adoptive NK cell transfer, CAR-NK cells, and memory-like NK cells.

Main Results:

• NK cells possess inherent anti-tumor capabilities crucial for immune surveillance.
• Tumor cells employ diverse strategies to escape NK cell recognition and killing.
• Various clinical approaches leveraging NK cells show promising outcomes in cancer treatment.

Conclusions:

• Understanding NK cell regulation within the tumor microenvironment is key to overcoming immune evasion.
• Current NK cell-based therapies, including adoptive transfer and CAR-NK cells, demonstrate significant therapeutic potential.
• NK cell-based cancer immunotherapy holds substantial promise for future clinical applications.