DDR2 Inhibitor

Sitravatinib (MGCD516) is an orally bioavailable receptor tyrosine kinase (RTK) inhibitor with IC₅₀s of 1.5 nM, 2 nM, 2 nM, 5 nM, 6 nM, 6 nM, 8 nM, 0.5 nM, 29 nM, 5 nM, and 9 nM for Axl, MER, VEGFR3, VEGFR2, VEGFR1, KIT, FLT3, DDR2, DDR1, TRKA, TRKB, respectively. Sitravatinib shows potent single-agent antitumor efficacy and enhances the activity of PD-1 blockade through promoting an antitumor immune microenvironment.

WRG-28 is a selective, extracellularly acting DDR2 allosteric inhibitor, with an IC₅₀ of 230 nM. WRG-28 inhibits tumor invasion, migration and tumor-supporting effects of cancer-associated fibroblasts (CAFs). WRG-28 inhibits metastatic breast tumor cell colonization in the lungs. WRG-28 also shows good activity of relieving rheumatoid arthritis in CAIA model of mice.

VU6015929 is a potent, selective and orally active dual discoidin domain receptor 1/2 (DDR1/2) inhibitor with IC₅₀s of 4.67 nM and 7.39 nM, respectively. VU6015929 potently blocks collagen-induced DDR1 activation and collagen-IV production.

DDR1-IN-4 (Compound 2.45) is a selective and potent Discoidin Domain Receptor 1 (DDR1) autophosphorylation inhibitor, with IC₅₀ values of 29 nM and 1.9 μM for DDR1 and DDR2, respectively.

Anti-Mouse DDR2 Antibody (DAB0065) is a mAb that specifically targets mouse discoidin domain receptor DDR2 without cross-reacting with DDR1. Anti-Mouse DDR2 Antibody (DAB0065) binds to the extracellular domain of native mouse DDR2, induces endocytosis and lysosomal degradation of DDR2, and this process is independent of collagen binding. Anti-Mouse DDR2 Antibody (DAB0065) exhibits significant therapeutic effects in both the unilateral ureteral obstruction (UUO) mouse model of renal fibrosis and the bleomycin (HY-108345)-induced mouse model of pulmonary fibrosis, effectively downregulating the mRNA expression of type I collagen Col1a1 and fibronectin Fn1. Anti-Mouse DDR2 Antibody (DAB0065) can be humanized and has the potential to be developed as a targeted agent for diseases such as idiopathic pulmonary fibrosis and renal fibrosis.

DDR1/2 IN-4 (Compound 37) is a selective dual DDR1 and DDR2 kinase inhibitor, with a pK_i of 8.6 for DDR1 and a pK_i of 8.2 for DDR2. DDR1/2 IN-4 functionally inhibits the kinase activities of DDR1 and DDR2. DDR1/2 IN-4 inhibits the release of MCP-1. DDR1/2 IN-4 can be used in studies related to idiopathic pulmonary fibrosis.

FGFR1/DDR2 inhibitor 1 is an orally active inhibitor of fibroblast growth factor receptor 1 (FGFR1) and discoindin domain receptor 2 (DDR2), with IC₅₀ values of 31.1 nM and 3.2 nM, respectively. Antitumor activity.

DDR1/2 inhibitor-2 (Example 31) is a DDR1/DDR2 inhibitor, with IC₅₀ values less than 100 nM. DDR1/2 inhibitor-2 can be used for research of cancer and fibrotic diseases.

DDR1-IN-1 dihydrochloride is a potent and selective DDR1 receptor tyrosine kinase inhibitor with an IC₅₀ of 105 nM; 4-fold less potent for DDR2 (IC₅₀ = 413 nM).

SR-302, a chemical probe, is a potent and selectivity DDR/p38 inhibitor, with IC₅₀ values of 0.125, 0.023 and 0.018 μM for p38α, DDR1 and DDR2, respectively. SR-302 can be used for the research of fibrotic disorders, such as renal and pulmonary fibrosis, atherosclerosis, and various forms of cancer.

CIDD-8633 is a potent DDR2 inhibitor with an IC₅₀ of 6.105 μM. CIDD-8633 inhibits cell migration and halts the cell cycle and induces apoptosis, significantly suppressing pancreatic ductal adenocarcinoma (PDAC) tumor growth. CIDD-8633 can be used for the study of pancreatic cancer such as PDAC.

Sitravatinib malate (MGCD516 malate) is an orally bioavailable receptor tyrosine kinase (RTK) inhibitor with IC₅₀s of 1.5 nM, 2 nM, 2 nM, 5 nM, 6 nM, 6 nM, 8 nM, 0.5 nM, 29 nM, 5 nM, and 9 nM for Axl, MER, VEGFR3, VEGFR2, VEGFR1, KIT, FLT3, DDR2, DDR1, TRKA, TRKB, respectively. Sitravatinib malate shows potent single-agent antitumor efficacy and enhances the activity of PD-1 blockade through promoting an antitumor immune microenvironment.

ML786 dihydrochloride is a potent and orally bioavailable Raf inhibitor, with IC₅₀s of 2.1, 4.2, and 2.5 nM for ^V600EΔB-Raf, wt B-Raf, and C-Raf, respectively. ML786 dihydrochloride also inhibits Abl-1, DDR2, EPHA2, KDR, and RET (IC₅₀=<0.5, 7.0, 11, 6.2, 0.8 nM). ML786 dihydrochloride can be used for the research of cancers.

DDR2-IN-2 is a Discoidin domain receptor 2 (DDR2) inhibitor. DDR2-IN-2 can be used for the research of cancer.

DDR1-IN-8 (compound 7s) is a potent inhibitor of DDR1/2, with the IC₅₀ values of 0.045 μM and 0.126 μM, respectively. DDR1-IN-8 has anti-tumor activity.

DDR1/2 inhibitor-3 (5n) is a DDR1/2 inhibitor, with IC₅₀ values​of 9.4 and 20.4 nM, respectively. DDR1/2 inhibitor-3 can be used in anti-inflammatory research.