Integrin Inhibitor

Cilengitide (EMD 121974) is an integrin (integrin) inhibitor with blood-brain barrier permeability, with IC₅₀ values against human targets as follows: 0.61 nM for αvβ3, 8.4 nM for αvβ5, 14.9 nM for α5β1, 5400 nM for αIIbβ3, 2050 nM for αvβ6, 2350 nM for αvβ8. Cilengitide inhibits the binding of integrins to vitronectin, fibronectin, fibrinogen and LAP (TGF-β), and serves as an internal standard for solid-phase integrin binding assays. Cilengitide inhibits tumor cell viability, induces apoptosis, reduces the phosphorylation levels of STAT3, AKT and mTOR, downregulates the expression of PD-L1, inhibits cell viability and angiogenesis, regulates anti-tumor immune responses and slows tumor growth. Cilengitide can be used in research related to glioblastoma, melanoma, advanced solid tumors and refractory brain tumors.

Cyclo(-RGDfK) is a potent and selective inhibitor of the αvβ3 integrin, with an IC₅₀ of 0.94 nM. Cyclo(-RGDfK) potently targets tumor microvasculature and cancer cells through the specific binding to the αvβ3 integrin on the cell surface.

RGD peptide (GRGDNP) is an inhibitor of integrin-ligand interactions. RGD peptide (GRGDNP) competitively inhibits α5β1 binding with extracellular matrice (ECM). RGD peptide (GRGDNP) promotes apoptosis through activation of conformation changes that enhance pro-caspase-3 activation and autoprocessing. RGD peptide (GRGDNP) plays an important role in cell adhesion, migration, growth, and differentiation.

Bexotegrast (PLN-74809) is an orally active, potent dual αvβ6/αvβ1 integrin inhibitor with K_d of 5.7 nM and 3.4 nM, respectively. Bexotegrast inhibits αvβ6- and αvβ1-induced TGF-β activation with IC₅₀ values of 29.8 nM and 19.2 nM, respectively. Bexotegrast has antifibrogenic effects and block multiple avenues of TGF-β activation in the fibrotic lung.

E7820 (ER68203-00), an orally active aromatic sulfonamide derivative, is a molecular glue that induces the targeted degradation of splicing factor RBM39 by recruiting the E3 ubiquitin ligase CUL4-RBX1-DDB1-DCAF15 (CRL4^DCAF15). E7820 is an angiogenesis inhibitor suppressing an expression of integrin alpha2 subunit on endothelium. E7820 inhibits rat aorta angiogenesis with an IC₅₀ of 0.11 μg/ml. E7820 modulates α-1, α-2, α-3, and α-5 integrin mRNA expression. E7820 can be used for the study of acute myeloid leukemia (AML).

Cucurbitacin B belongs to a class of highly oxidized tetracyclic triterpenoids and is oral active. Cucurbitacin B inhibits tumor cell growth, migration and invasion and cycle arrest, but induces cell apoptosis. Cucurbitacin B has potent anti-inflammatory, antioxidant, antiviral, hypoglycemic, hepatoprotective, neuroprotective activity.

CWHM-12 is a potent inhibitor of αV integrins with IC₅₀s of 0.2, 0.8, 1.5, and 1.8 nM for αvβ8, αvβ3, αvβ6, and αvβ1.

Arg-Gly-Asp-Ser is an integrin binding sequence that inhibits integrin receptor function. Arg-Gly-Asp-Ser directly and specifically bind pro-caspase-8, pro-caspase-9 and pro-caspase-3, while it does not bind pro-caspase-1.

Anti-Mouse/Rat/Human Osteopontin/SPP1 Antibody (MPIIIB10) is a mouse-derived Osteopontin/SPP1 IgG1 κ type antibody inhibitor. Anti-Mouse/Rat/Human Osteopontin/SPP1 Antibody (MPIIIB10) blocks Angiotensin II (HY-13948)-induced DNA synthesis and collagen gel contraction in cardiac fibroblasts. Anti-Mouse/Rat/Human Osteopontin/SPP1 Antibody (MPIIIB10) significantly inhibits tumor growth in CT26 or MC38 tumors mice models.

Nexinhib20 is an inhibitor that targets the interactions of Rab27a-JFC1 (IC₅₀: 2.6 μM) and Rac-1-GTP. Nexinhib20 can inhibit neutrophil exocytosis, adhesion, and β2 integrin activation, and has anti-inflammatory activity. Nexinhib20 can be used in the research of diseases such as systemic inflammation and myocardial ischemia-reperfusion injury.

TC-I 15 (TC-I-15) is a type of allosteric collagen-binding integrin α2β1 inhibitor, and it also inhibits α1β1 and α11β1. TC-I 15 inhibits platelet adhesion to collagen and thrombus deposition. TC-I 15 prevents the formation of a pre-metastatic microenvironment by inhibiting the uptake of cancer-associated fibroblast (CAF) extracellular vesicles (EVs) by lung fibroblasts, which reduces the metastasis of salivary gland adenocystic carcinoma (SACC) to the lungs in mouse models, .

Eptifibatide is a cyclic heptapeptide, acts as a competitive antagonist for the activated platelet glycoprotein IIb/IIIa receptor, with anti-platelet activity.

Caplacizumab (His Tag) is a humanized anti-von Willebrand factor (vWF) nanobody. Caplacizumab (His Tag) inhibits the binding of vWF with platelet glycoprotein (GP) Ibα. Caplacizumab (His Tag) inhibits the vWF-mediated platelet adhesion and prevents further microthrombi formation. Caplacizumab (His Tag) can be used for the research of thrombotic thrombocytopenic purpura (TTP).

Cilengitide TFA (EMD 121974 TFA) is an integrin (integrin) inhibitor with blood-brain barrier permeability, with IC₅₀ values against human targets as follows: 0.61 nM for αvβ3, 8.4 nM for αvβ5, 14.9 nM for α5β1, 5400 nM for αIIbβ3, 2050 nM for αvβ6, 2350 nM for αvβ8. Cilengitide TFA inhibits the binding of integrins to vitronectin, fibronectin, fibrinogen and LAP (TGF-β), and serves as an internal standard for solid-phase integrin binding assays. Cilengitide TFA inhibits tumor cell viability, induces apoptosis, reduces the phosphorylation levels of STAT3, AKT and mTOR, downregulates the expression of PD-L1, inhibits cell viability and angiogenesis, regulates anti-tumor immune responses and slows tumor growth. Cilengitide TFA can be used in research related to glioblastoma, melanoma, advanced solid tumors and refractory brain tumors.

GRGDSP, a synthetic linear RGD peptide, is an integrin inhibitor.

Natalizumab (AN100226; BG00002) is a humanized monoclonal IgG4 antibody inhibitor that selectively targets α4 integrin (CD49d). It blocks the interaction of integrins such as α4β1 (VLA-4) with vascular cell adhesion molecule VCAM-1, intercellular adhesion molecule ICAM-1, and fibronectin by competitively binding to the α4 subunit. Natalizumab inhibits the adhesion, retention, and transendothelial migration of immune cells (such as CD4⁺ T cells), reducing the infiltration of inflammatory cells into the central nervous system or lesion sites, thus exerting anti-inflammatory and immunomodulatory activity. Natalizumab is used in the study of relapsing-remitting multiple sclerosis (RRMS) and also has applications in the study of autoimmune or inflammation-related diseases such as Crohn's disease, B-cell lymphoma, and non-infectious uveitis. Natalizumab can also prevent lymphocytes from entering the central nervous system, thereby preventing acute demyelinating relapses.

Volociximab (M200) is a chimeric human/murine IgG4 antibody IIA1 targeting integrin α5β1 (EC₅₀=0.2 nM). Integrin α5β1 is a major fibronectin receptor involved in angiogenesis. Volociximab has antiangiogenic and antitumor activities and inhibits the proliferation of human umbilical vein vascular endothelial cells (HUVECs).

BTT-3033 is an orally active conformation-selective inhibitor of α2β1 (EC50: 130 nM) by binding to the α2I domain. BTT-3033 inhibits platelet binding to collagen I and cell proliferation, and induces cell apoptosis. BTT-3033 can be used in the research of prostate cancer, inflammation and cardiovascular disease.

A-205804 is an orally bioavailable, potent and selective lead inhibitor of E-selectin and ICAM-1 expression, with an IC₅₀ of 20 nM and 25 nM for E-selectin and ICAM-1, respectively. A-205804 can be used in the research of chronic inflammatory diseases.

Natalizumab (Anti-CD49d) (AN100226; BG00002) Solution is a humanized monoclonal IgG4 antibody inhibitor that selectively targets α4 integrin (CD49d), blocking the interaction of integrins such as α4β1 (VLA-4) with vascular cell adhesion molecule VCAM-1, intercellular adhesion molecule ICAM-1, and fibronectin by competitively binding to the α4 subunit. Natalizumab solution inhibits the adhesion, retention, and transendothelial migration of immune cells (such as CD4⁺ T cells), reducing the infiltration of inflammatory cells into the central nervous system or lesion sites, thereby exerting anti-inflammatory and immunomodulatory activity. Natalizumab (Anti-CD49d) solution is used in the study of relapsing-remitting multiple sclerosis (RRMS) and is also applied in the research of autoimmune or inflammation-related diseases such as Crohn's disease, B-cell lymphoma, and non-infectious uveitis. Natalizumab (Anti-CD49d) can also prevent lymphocytes from entering the central nervous system, thus preventing acute demyelinating relapses.