The article explores the relationship between cholesterol metabolism and the tumor immune suppressive microenvironment (TIME), which can hinder the body's immune response to tumors. Cholesterol accumulation has been found to negatively impact the function of natural killer (NK) cells, including CAR-NK cells, which are crucial for fighting tumor cells. The article suggests that targeting cholesterol metabolism could potentially enhance the effectiveness of CAR-NK cells in tumor therapies. However, the article also acknowledges the need for further research to validate these approaches and address potential limitations and side effects.