TGFβR2 Inhibitor

Fidrisertib (BLU-782) is the orally active inhibitor for activin receptor-like kinase 2 (ALK2) that inhibits ALK2^R206H, ALK2, ALK1, ALK6, ALK3, ALK4, TGFβR2 and ALK5 with IC₅₀s of 0.2, 0.6, 3, 24, 45, 65, 67 and 155 nM, respectively.

Klotho-derived peptide 1 hydrochloride (KP1 (human) hydrochloride) is a polypeptide with multiple activities including senescence inhibition and renal protection. Klotho-derived peptide 1 hydrochloride binds to TβR2 and ATAD3A, with a K_d value of 1.41 μM for binding to human TβR2 and a K_d value of 0.319 μM for binding to ATAD3A. By binding to TβR2, Klotho-derived peptide 1 hydrochloride blocks the TGF-β/Smad3 and downstream TGF-β signaling pathways, inhibits the expression of miR-223-3p, induces the expression of lncRNA-TUG1, restores endogenous Klotho at the post-transcriptional level, inhibits cellular senescence markers, fibroblast activation and renal tubular epithelial cell apoptosis, blocks cytochrome c release and caspase activation, maintains the integrity of mitochondrial ultrastructure, and restores mitochondrial protein levels. Klotho-derived peptide 1 hydrochloride enters renal tubular epithelial cells via endocytosis, protects against nephrotoxic and hypoxic injuries, and recapitulates the renal protective and anti-fibrotic effects of full-length Klotho. Klotho-derived peptide 1 hydrochloride can be used in research related to kidney diseases such as chronic kidney disease and SARS-CoV-2-associated acute kidney injury.

Nisevokitug (NIS-793) is a humanized IgG2λ monoclonal antibody and an inhibitor of the TGF-β signaling pathway. Nisevokitug blocks the binding of TGF-β to the membrane-bound TGF-βR1/TGF-βR2 receptors, inhibits both Smad-dependent and Smad-independent downstream cascade signaling, downregulates fibrosis-related genes, and reverses the TGF-β-mediated immunosuppressive microenvironment. Nisevokitug can be used in the research of diseases such as pancreatic ductal adenocarcinoma, colorectal cancer, myelofibrosis, and myelodysplastic syndrome.

TGFβRII-IN-2 (Compound 3n) is an inhibitor for transforming growth factor-β type II receptor (TGFβRII) with IC₅₀ of 2.4 μM, which blocks endothelial-to-mesenchymal transition and cell migration in different cancer cell lines without perturbing the microtubule network.

Klotho-derived peptide 1 (KP1 (human)) is a polypeptide with multiple activities including senescence inhibition and renal protection. Klotho-derived peptide 1 binds to TβR2 and ATAD3A, with a K_d value of 1.41 μM for binding to human TβR2 and a K_d value of 0.319 μM for binding to ATAD3A. By binding to TβR2, Klotho-derived peptide 1 blocks the TGF-β/Smad3 and downstream TGF-β signaling pathways, inhibits the expression of miR-223-3p, induces the expression of lncRNA-TUG1, restores endogenous Klotho at the post-transcriptional level, inhibits cellular senescence markers, fibroblast activation and renal tubular epithelial cell apoptosis, blocks cytochrome c release and caspase activation, maintains the integrity of mitochondrial ultrastructure, and restores mitochondrial protein levels. Klotho-derived peptide 1 enters renal tubular epithelial cells via endocytosis, protects against nephrotoxic and hypoxic injuries, and recapitulates the renal protective and anti-fibrotic effects of full-length Klotho. Klotho-derived peptide 1 can be used in research related to kidney diseases such as chronic kidney disease and SARS-CoV-2-associated acute kidney injury.