Table 1.
DAMP | Abbreviation | Effect on Immune Cells | References |
---|---|---|---|
Annexin A1 | ANXA1 | Expressed in different cells (neutrophils, eosinophils, and monocytes), ANXA1 has a role in the regulation and resolution of inflammation. It can act as a negative regulator of innate immunity, with neutrophils being its main target; it activates the migration of APCs towards the dying cells, facilitating their engulfment and processing. | [34,74] |
Adenosine triphosphate | ATP | ATP acts as a strong chemoattractant and promotes not only the recruitment of immune cells but also their maturation. | [73,75] |
Calreticulin | CRT | Calreticulin acts as phagocytosis inducer. Its exposure and the release of ANXA1, ATP and HMGB1 result in the attraction and maturation of DCs in the tumor microenvironment. | [36,39] |
Deoxyribonucleic acid | DNA | With its accumulation in the cytoplasm, DNA can stimulate innate immune responses. | [93] |
High mobility group box 1 protein | HMGB1 | Acts as an essential DAMP in the DCs activation, stimulating the production of pro-inflammatory factors, strongly contributing to the immunogenicity of ICD. | [29,94] |
Heat-shock protein | HSP 70 HSP 90 |
HSP act as eat-me signals for phagocytes. They can induce DC maturation and promote target engulfment by APC cells. | [29] |
Type I interferon | IFN-I | IFN-Is acts as potent immunostimulatory proteins and have a crucial role in ICD. It can modulate the maturation, differentiation, and migration of DC cells, increase primary antibody responses, and activate B and T cells directly or indirectly. | [29,71] |
Ribonucleic acid | RNA | It recruits leukocyte and M1-type macrophages. | [95] |
Uric acid | UA | Crystalline UA can produce inflammatory mediators through macrophage activation and the enhancement of T cells. | [96] |