Integrin Antagonist

GLPG0187 is a broad spectrum integrin receptor antagonist with antitumor activity; inhibits α_vβ₁-integrin with an IC₅₀ of 1.3 nM. GLPG0187 inhibits migrasome biogenesis without cytotoxicity.

Vedolizumab is a humanized IgG1 monoclonal antibody that targets the α4β7 integrin for the treatment of ulcerative colitis and Crohn's disease.

Tirofiban (L700462) is a selective and reversible platelet integrin receptor (Gp IIb/IIIa) antagonist that inhibits fibrinogen binding to this receptor and has antithrombotic activity. Tirofiban induces proliferation and migration on endothelial cell by inducing production of VEGF. Tirofiban can significantly reduces myocardial no-reflow and ischemia-reperfusion injury by alleviating myocardial microvascular structural and endothelial dysfunction in the ischemic area.

ATN-161 is a novel integrin α5β1 antagonist, which inhibits angiogenesis and growth of liver metastases in a murine model.

ATN-161 trifluoroacetate salt is a novel integrin α5β1 antagonist, which inhibits angiogenesis and growth of liver metastases in a murine model.

Carotegrast methyl (AJM300) is an orally active and selective α4 integrin antagonist. HCA2969, an active metabolite of Carotegrast methyl, is a specific and dual α4β1/α4β7 integrin antagonist. Carotegrast methyl prevents the development of colitis in mice.

Vedolizumab (anti-α4β7-integrin) is a humanized IgG1 monoclonal antibody that targets the α4β7 integrin for the treatment of ulcerative colitis and Crohn's disease.

Tirofiban (L700462) hydrochloride monohydrate is a selective and reversible platelet integrin receptor (Gp IIb/IIIa) antagonist that inhibits fibrinogen binding to this receptor and has antithrombotic activity. Tirofiban hydrochloride monohydrate induces proliferation and migration on endothelial cell by inducing production of VEGF. Tirofiban hydrochloride monohydrate can significantly reduces myocardial no-reflow and ischemia-reperfusion injury by alleviating myocardial microvascular structural and endothelial dysfunction in the ischemic area.

Tetrac (Tetraiodothyroacetic acid), a derivative of L-thyroxine (T4), is a thyrointegrin receptor antagonist. Tetrac blocks the actions of T4 and 3,5,3'-triiodo-L-thyronine (T3) at the cell surface receptor for thyroid hormone on integrin αvβ3. Tetra has anti-angiogenic and anti-tumor activities.

huATN-658 is an inhibitor that specifically targets the DIII domain of human urokinase plasminogen activator receptor (uPAR). huATN-658 neutralizes uPAR function by blocking the interaction between uPAR and integrins, without interfering with the binding of uPA or vitronectin to uPAR. huATN-658 inhibits the proliferation and invasion of breast cancer cells, slows the growth of primary breast tumors, reduces breast cancer-induced bone lesions and decreases osteoclast activity. huATN-658 also alters the gene expression of the TGF-β receptor complex signaling pathway. huATN-658 exerts synergistic anticancer effects when combined with Zoledronic Acid (HY-13777), and does not cause physiological or behavioral abnormalities in immunodeficient mice. huATN-658 can be used in research related to breast cancer, metastatic breast cancer and breast cancer-induced bone disease.

Surfactin C1 is an amphiphilic biosurfactants. Surfactin C1 inhibits leukemic cell (HL-60) adhesion to human umbilical vein endothelial cells (HUVEC). Surfactin C1 inhibits adhesion melecules expression, such as ICAM-1 and VCAM-1.

BMS-587101 is a potent and orally active antagonist of leukocyte function associated antigen-1 (LFA-1). BMS-587101 has anti-inflammatory effects and can be used for rheumatoid arthritis research.

SB-267268 is a selective and nonpeptidic alpha(v)beta3 (αvβ3) and alpha(v)beta5 (αvβ5) integrins antagonist, with K_is of 0.9, 0.5 and 0.7 nM for human αvβ3, monkey αvβ3 and human αvβ5, respectively. SB-267268 inhibits human and mouse αvβ3 with IC₅₀s of 0.68 and 0.29 nM, respectively. SB-267268 reduces angiogenesis and VEGF expression.

Integrin antagonist 27 (Compound 27) is a small molecule integrin αvβ3 antagonist with an affinity of 18 nM. Integrin antagonist 27 can be combined with Paclitaxel (HY-B0015) to selectively target αvβ3-positive metastatic cancer cells. Integrin antagonist 27 is used as an anticancer agent.

Valategrast (R-411 free base) is a potent and orally active integrin α4β1 (VLA-4) and α4β7 dual antagonist. Valategrast has the potential for Chronic obstructive pulmonary disease (COPD) and asthma treatment.

TCS 2314 (compound 3) is orally active and selective very late antigen-4 (VLA-4, α4β1, CD49d/CD29) antagonist with an IC₅₀ of 4.4 nM.

Milategrast is useful as cell adhesion inhibitor or cell infiltration inhibitor. Milategrast in vitro inhibites the adhesion of Jurkat cells to human fibronectin with an IC₅₀ of ＜5 μM.

K34c hydrochloride is a potent and selective α5β1 integrin antagonist. By inhibiting α5β1 integrin, K34c hydrochloride reduces chemotherapy-induced premature senescence and promotes apoptosis. K34c hydrochloride can be used in glioblastoma research.

Fradafiban (BIBU-52) hydrochloride is a nonpeptide platelet glycoprotein IIb/IIIa antagonist, which binds to the human platelet GP IIb/IIIa complex with a K_d value of 148 nM.

Sibrafiban (RO 48-3657) is the orally active, nonpeptide, double-proagent of Ro 44-3888 and a selective glycoprotein IIb/IIIa receptor antagonist. Sibrafiban inhibits platelet aggregation.