TGF-β Receptor Antagonist

LSKL, Inhibitor of Thrombospondin (TSP-1) is a latency-associated protein (LAP)-TGFβ derived tetrapeptide and a competitive TGF-β1 antagonist. LSKL, Inhibitor of Thrombospondin (TSP-1) inhibits the binding of TSP-1 to LAP and alleviates renal interstitial fibrosis and hepatic fibrosis. LSKL, Inhibitor of Thrombospondin (TSP-1) suppresses subarachnoid fibrosis via inhibition of TSP-1-mediated TGF-β1 activity, prevents the development of chronic hydrocephalus and improves long-term neurocognitive defects following subarachnoid hemorrhage (SAH). LSKL, Inhibitor of Thrombospondin (TSP-1) can readily crosse the blood-brain barrier.

LSKL, Inhibitor of Thrombospondin (TSP-1) TFA is a latency-associated protein (LAP)-TGFβ derived tetrapeptide and a competitive TGF-β1 antagonist. LSKL, Inhibitor of Thrombospondin (TSP-1) TFA inhibits the binding of TSP-1 to LAP and alleviates renal interstitial fibrosis and hepatic fibrosis. LSKL, Inhibitor of Thrombospondin (TSP-1) TFA suppresses subarachnoid fibrosis via inhibition of TSP-1-mediated TGF-β1 activity, prevents the development of chronic hydrocephalus and improves long-term neurocognitive defects following subarachnoid hemorrhage (SAH). LSKL, Inhibitor of Thrombospondin (TSP-1) TFA can readily crosse the blood-brain barrier.

LAE-102 is the selective anti-ActRIIA (activin receptor type IIA or ACVR2) monoclonal antibody. LAE-102 increases muscle mass and reduces fat mass. LAE102 can increase serum activin A levels in vivo. LAE-102 is promising for research of obesity.

IMM-H007 (WS070117) is an orally active and potent AMPK (AMP-activated protein kinase) activator and TGFβ1 (transforming growth factor β1) antagonist. IMM-H007 has protective effects in cardiovascular diseases via activation of AMPK. IMM-H007 negatively regulates endothelium inflammation through inactivating NF-κB and JNK/AP1 signaling. IMM-H007 inhibits ABCA1 degradation. IMM-H007 resolves hepatic steatosis in HFD-fed hamsters by the regulation of lipid metabolism. IMM-H007 can be used for the research of nonalcoholic fatty liver disease (NAFLD) and inflammatory atherosclerosis.

Ramatercept (ACE-031) is a soluble ActRIIB receptor and can be used as a soluble activin receptor 2 (ACVR2) antagonist. Ramatercept inhibits the signal pathway of muscle growth inhibition and has potential application in muscle atrophy.

NUCC-555 is an activin antagonist. NUCC-555 interacts with Trp25, Trp28, Phe55, Tyr93, Lys103, and Asn107 in the Activin A binding pocket. NUCC-555 blocks Activin A-mediated hepatic stellate cells (HSCs) activation. NUCC-555 promotes liver regeneration and halts fibrosis progression in chronic liver disease models. NUCC-555 inhibits Activin A-mediated ovarian cell proliferation. NUCC-555 decreases FSH levels in ovariectomized mice.

SRI-35241 is a thrombospondin TSP-1 inhibitor with a pIC₅₀ of 8.12 nM against human targets. SRI-35241 inhibits the binding of TSP-1 to latent transforming growth factor-β-associated peptide (LAP) and blocks the activation of TGF-β. SRI-35241 shows a certain time-dependent property, with a plasma half-life of 1.8 h after intravenous administration. SRI-35241 can be used for the research of multiple myeloma and fibrotic diseases.

sTGFBR3 antagonist 1 (Compound p24) is an antagonist for soluble transforming growth factor beta receptor 3 (sTGFBR3), thus activates TGF-β signaling pathway, and inhibits IκBα/NF-κB signaling pathway. sTGFBR3 antagonist 1 inhibits NO-release in LPS (HY-D1056) -induced BV2 cells with an IC₅₀ of 0.52 μM. sTGFBR3 antagonist 1 exhibits anti-inflammatory and neuroprotective activities with blood brain barrier (BBB) permeability. sTGFBR3 antagonist 1 can be used in Alzheimer’s Disease research.