脂肪組織
The availability of specific dietary nutrients can affect ILC immune homeostasis by altering the energy stored in the adipose tissue. Adipose tissue maintains metabolism homeostasis and is now considered a fully immunocompetent organ. Malnutrition and gluttony can dysregulate ILC responses via changes in dietary nutrients, having direct effects on the energy stored in the adipose tissue. Obesity is associated with changes of gastrointestinal flora, increased afflux of free fatty acids from adipose tissue into the liver and increased gut permeability. The close anatomical proximity of the gastrointestinal tract and the liver means transportation of bacterial metabolites through the portal vein triggers inflammation, acting on innate immune cells, including ILC1s, therefore playing an important role in the activation of an inflammatory state in the liver. Therefore, inflammation associated with obesity can influence the progression of liver disease, due to the development of insulin resistance and metabolic dysregulation. ILC1s as a key regulatory of adipose tissue inflammation, are therefore a potential therapeutic target for treating people with liver disease or metabolic syndrome.