Current progress in NK cell biology and NK cell-based cancer immunotherapy

Area of Science:

• Immunology
• Oncology
• Cell Therapy

Background:

• Interactions between the immune system and tumor cells are key to developing novel immunotherapies.
• Adoptive immunotherapy using natural killer (NK) cells is a promising cancer treatment strategy.
• NK cells, while often viewed uniformly, comprise distinct subsets with varying functions.

Purpose of the Study:

• To explore the potential of NK cell-based immunotherapy for cancer treatment.
• To investigate the heterogeneity of NK cell subsets and their alterations in cancer patients and healthy individuals.
• To highlight the need for personalized approaches in NK cell selection, expansion, and activation for immunotherapy.

Main Methods:

• Review of existing strategies for NK cell activation and adoptive therapy.
• Analysis of phenotypic and functional differences in NK cell subsets.
• Examination of NK cell receptor expression alterations in cancer patients and healthy individuals (stratified by age and cytomegalovirus infection).

Main Results:

• NK cells are a promising strategy for adoptive cancer immunotherapy, with ongoing clinical trials.
• NK cell subsets exhibit distinct characteristics influenced by age, cytomegalovirus (CMV) infection, and cancer.
• Alterations in activating and inhibitory receptors on NK cells are observed in cancer patients.

Conclusions:

• NK cell-based immunotherapy holds significant potential for cancer treatment.
• The heterogeneity of NK cell subsets and their altered functions necessitate individualized therapeutic protocols.
• Personalized selection, expansion, and activation of specific NK cell subsets are crucial for successful immunotherapy.