Target Treatment Tumor model Outcome of adenosine axis blockade depends on presence/unhindered function of Impact on the TME CD73 ➣ mAbs: TY/23 (368, 378–384) 2C5 IgG2a (384) Oleclumab (385) AD2 (386) ➣ Pharmacologic inhibitor: APCP (378, 379, 381, 383, 384, 387–389) ➣ Breast: 4T1.2 (368, 382, 383) E0771 (368) LM3a (386) MDA-MB-231a (386) ➣ Melanoma: B16-SIY (378) B16-F10 (379, 381, 384, 387, 389) K1735 (381) LWT1 (384) ➣ Ovarian: ID8 (378, 388) ➣ Prostate: TRAMP-C1 (380) RM-1 (382) ➣ Colon: CT26 (385) MC38-OVA (382) ➣ Fibrosarcoma: MCA-induced (380, 382) ➣ Lymphoma: EG7 (379) ➣ Primary tumor expansionrate ↓ (368, 378–382, 385, 387, 389) Host CD73 (387) A2AR on hematopoietic cells (368) T cells, NK cells or B cells (368) T cells (381) CD8 T cells (380) IFN-γ (382) IL-17A (381) Partially retained inmice depleted of B cells (381) Retained in perforin KO mice (382) ➣ Metastasis formation ↓ (368, 379, 380, 384, 386) Retained against tumor cells with significantly reduced CD73 (386) Host CD73 (380) MDSCs (384) Retained in mice depleted of T cells or NK cells (380) Retained in SCID mice lacking T cells, NK cells and functional B cells (386) Host FcRIV (384) FcR binding capacity (384) Independent of the capacity to suppress CD73 catalytic activity (384, 386) ➣ Survival↑ (378, 382, 384, 388) ↑ CD8+ T cells (381, 385, 389)↑ tumor-specific CD8+ T cells (382)↓ CD73 on CD4+/CD8+ T cells (382, 384)↑ B cells (381)↓ Tregs (389)↑ MDSCs (384)↓ CD73 on MDSCs (384)↑ IFN-γ, TNF-α, IL-17A (381)↓ Ki67+ cells (381)↓ Bcl-2+ cells (381)↓ Microvessel density (383)↓ VEGF (383) CD39 ➣ mAb: 9-8B (390) ➣ Pharmacologic inhibitor: POM-1 (391) ➣ Melanoma: B16-F10 (391) ➣ Colon: MCA38 (391) ➣ Sarcoma: IGN-SRC- 004a (390) ➣ Primary tumor expansion rate ↓ (391) Host CD39 (391) ➣ Survival ↑ (390) Retained in NOG mice lacking T cells, B cells, NK cells and functional macrophages (390) CD38 ➣ mAb: NIMR-5 (96) ➣ Pharmacologic inhibitor: Rhein (96) ➣ Lung: 344SQ (96) LLC-JSP (96) 531LN3 (96) ➣ Primary tumor expansion rate ↓ (96) CD8+ T cells (96) ↑ CD8+ T cells (96)↑ CD44hiCD62Llo CD8+ T cells (96)↓ PD-1+TIME3+ CD8+ T cells (96)↓ Tregs (96)↓ MDSCs (96) Intratumoral hypoxia Respiratory hyperoxia (60% O2) (9, 293) ➣ Breast: 4T1 (293) ➣ Melanoma: B16 (9) B16-F10 (293) CL8-1 (9) ➣ Fibrosarcoma: MCA205 (9, 293) ➣ Primary tumor expansion rate ↓ (9) ➣ Metastasis formation ↓ (293) CD4 > CD8 > NK cells (293) Host A2AR (293) Independent of 60%O2-induced ROS production (293) ➣ Survival ↑ (9, 293) ↓ Hypoxia (9, 293)↓ HIF- 1α (9)↑ FHL-1, FIH-1, VHL (HIF- 1α inhibitors) (9)↓ CD39, CD73, A2AR, A2BR, COX-2 mRNA (9)↓ extracellular adenosine (9)↑ CD8+, CD69+, CD44+ cells (293)↓ Tregs (293)↑ IL-2, IL-12, CXCL9, CXCL10, CXCL11 mRNA (293)↓ TGF-β (293)↓ FOXP3 in Tregs (293)↓ CD39, CD73, CTLA-4 on Tregs (293)↑ MHC class I on tumor cells (9)↓ VEGF, VEGF mRNA (9)↓ Microvessel density (9) A2AR ➣ Antagonists: ZM241385 (38, 54) ZM241365 (389) SCH58261 (54, 292, 384, 392–394) FSPTP (395) CPI-444 (396) PBF-509 (397) ➣ Breast: 4T1.2 (292) ➣ Melanoma: B16-F10 (292, 384, 389, 394, 395, 397) CL8-1 (38) BRAFV600E-PTEN-deficient mice (393) LWT1 (393) ➣ Colon: CT26 (396) MC38 (396) ➣ NSCLC: PC9a (54) ➣ Bladder: MB49 (395) ➣ HNSCC: Tgfbr1/Pten double KO (392) ➣ Fibrosarcoma: MCA205 (397) ➣ Primary tumor expansion rate ↓ (38, 54, 389, 392, 393, 396) T cells (38) Retained in NUDE micelackingT cells (54) ➣ Metastasis formation ↓ (292, 384, 393, 394, 397) Tumor CD73 (292, 394) Host A2AR (292) T cells, B cells or NK cells (292) Perforin (292) ➣ Survival↑ (384, 396) CD8 T cells > NK cells (394) ↓ CD8+, CD4+ T cells (395)↑ CD8+ T cells (389, 392, 393)↑ CD69 on CD8+ T cells (393)↓ A2AR+ CD8+ T cells (392)↑ IFN-γ+ CD8+ T cells (392)↑ T-bet, 41-BB in/on CD44+CD8+ T cells (396)↑ IFN-γ, TNF-α production by CD8+ T cells (392)↑ stimulation-induced IFN-γ/TNF-αproduction by CD8+ T cells (396)↑ NK cells (393, 395)↑ GzB+ NK cells (292)↓ Tregs (389, 392, 393)↓ PD-1, LAG3, FOXP3 on Tregs (396)↓ A2AR+ Tregs (392)↓ FOXP3 (392) A2BR ➣ Antagonists: PSB1115 (292, 315, 359, 398) ATL-801 (399) ➣ Breast: 4T1.2 (292, 359, 368, 399) E0771 (359) ➣ Melanoma: B16-F10 (292, 315, 359, 398) LWT1 (359) ➣ Bladder: MB49 (399) ➣ Primary tumor expansion rate ↓ (315, 398, 399) Mature T cells (399) T cells (398) Host A2BR (399) Host CXCR3 (399) Retained in A2AR−/− mice (399) Retained in mice depleted of MDSCs but lost upon adoptive transfer of MDSCs (398) ➣ Metastasis formation ↓ (292, 359, 368) Tumor CD73 (292) Retained in RAG−/−cγ−/− mice lacking T cells, B cells and NK cells (292) Retained in mice depleted of T cells, NK cells D11c+ DCs or macrophages (359) ➣ Survival↑ (359) Tumor A2BR (359) Retained in mice depleted of T cells or NK cells (359) ↑ CD8+ T cells (315, 398)↑ CXCR3+ T cells (399)↑ NKT cells (315, 398)↓ MDSCs (315, 398)↑IFN-γ, CXCL10 mRNA (399)↑ IFN-γ, TNF-α, GzB (398)↓ MCP-1, IL-10 (398)↓ VEGF (315)↓ Microvessel density (315)