TGF-beta/Smad Inhibitor

Pirfenidone (AMR69) is an antifibrotic agent that attenuates CCL2 and CCL12 production in fibrocyte cells. Pirfenidone has growth-inhibitory effect and reduces TGF-β2 protein levels in human glioma cell lines. Pirfenidone also has anti-inflammatory activities.

SIS3 is a potent and selective inhibitor of Smad3 with an IC₅₀ of 3 μM for Smad3 phosphorylation. SIS3 inhibits the myofibroblast differentiation of fibroblasts by TGF-β1.

Luspatercept (ACE-536) is a recombinant modified ActRIIB fusion protein that binds with transforming growth factor β superfamily ligands. Luspatercept increases the erythrocyte numbers and promotes maturation of erythroid precursors. Luspatercept binds with GDF11 and inhibits Smad2/3 signaling. Luspatercept can be used for the research of anemia.

Hydrochlorothiazide (Standard) is the analytical standard of Hydrochlorothiazide. This product is intended for research and analytical applications. Hydrochlorothiazide (HCTZ), an orally active diuretic agent of the thiazide class, inhibits transforming TGF-β/Smad signaling pathway. Hydrochlorothiazide has direct vascular relaxant effects via opening of the calcium-activated potassium (KCA) channel. Hydrochlorothiazide improves cardiac function, reduces fibrosis and has antihypertensive effect.

Oxymatrine, an alkaloid from Sophora flavescens Alt. with anti-inflammatory, antifibrosis, and antitumor effects, inhibits the iNOS expression and TGF-β/Smad pathway. Oxymatrine inhibits bocavirus minute virus of canines (MVC) replication, reduces viral gene expression and decreases apoptosis induced by viral infection.

Fresolimumab (GC1008) is a human monoclonal antibody against TGF-β that neutralizes all mammalian active subtypes of TGF-β. The binding affinity of Fresolimumab to TGF-β2 is 1.8 nM. Fresolimumab improves Bleomycin (HY-108345)-induced acute lung injury. Fresolimumab radiolabeled with ⁸⁹Zr can be used for PET analysis of TGF-β expression, antibody uptake and organ distribution. Fresolimumab can be used in the study of cancer, osteogenesis imperfecta, fibrosis and kidney disease.

Demethylzeylasteral is an orally active triterpenoid compound isolated from Tripterygium wilfordii, which has functions such as anti-inflammatory, anti-tumor, anti fertility, estrogen metabolism regulation, immune suppression, and immune system regulation ^[1][2].

Apitegromab (SRK-015) is an anti-promyostatin monoclonal antibody. Apitegromab can be used for the research of neuromuscular disease including spinal muscular atrophy.

Trevogrumab (REGN-1033) is a monoclonal antibody targeting GDF8 (growth differentiation factor 8, also known as myostatin). Trevogrumab is used in research on muscle wasting conditions, including disuse atrophy, chronic diseases, and changes in food and nutrient intake.

Hydrochlorothiazide (HCTZ), an orally active diuretic agent of the thiazide class, inhibits transforming TGF-β/Smad signaling pathway. Hydrochlorothiazide has direct vascular relaxant effects via opening of the calcium-activated potassium (KCA) channel. Hydrochlorothiazide improves cardiac function, reduces fibrosis and has antihypertensive effect.

Sotatercept (mIgG2a) (RAP-011), the murine homolog of Sotatercept (ACE-011) (HY-P99590), is a soluble activin receptor type IIA (ActRIIA) ligand trap. Sotatercept (mIgG2a) inhibits the binding of activin A and other members of the TGF-β superfamily (such as Activin A/B, GDF11 and BMP9/10) to their receptors by combining and neutralizing them, thereby regulating cell proliferation and differentiation. Sotatercept (mIgG2a) mainly inhibits the SMAD2/3 signaling pathway, and can be used in various diseases such as chronic kidney disease. Sotatercept (mIgG2a) reduces the expression of erythropoietic hepcidin (ERFE), regulates iron metabolism, and promotes red blood cell production. Sotatercept (mIgG2a) has a dual effect of promoting bone formation (anabolic) and inhibiting bone resorption (catabolic).

Chebulinic acid is a potent natural inhibitor of M. tuberculosis DNA gyrase, also can inhibit SMAD-3 phosphorylation, inhibit H+ K+-ATPase activity.

EMT inhibitor-1 is an inhibitor of of Hippo, TGF-β, and Wnt signaling pathways with antitumor activities.

3,3-Dimethyl-1-butanol (DMB) is an orally active inhibitor of trimethylamine (TMA) and trimethylamine N-oxide (TMAO). 3,3-Dimethyl-1-butanol inhibits the signaling pathway of p65 NF-κB and TGF-β1/Smad3. 3,3-Dimethyl-1-butanol has potential applications in cardiovascular disease (CVD).

Carotuximab (TRC105) is a IgG1 monoclonal antibody that blocks endoglin (CD105) and its downstream Smad signaling pathway. Carotuximab has immunomodulatory and antineoplastic actions.

Micheliolide is a sesquiterpene lactone with anti-cancer and anti-inflammatory effects, which is derived from Michelia compressa and Michelia champaca. Micheliolide can attenuate high glucose-stimulated NF-κB activation, IκBα degradation, and the expression of MCP-1, TGF-β1, and FN in mouse mesangial cells. Micheliolide inhibits LPS (HY-D1056)-induced activation of NF-κB and PI3K/Akt/p70S6K pathways to play an anti-inflammatory role. Micheliolide inhibits dextran sodium sulphate (DSS) (HY-116282)-induced inflammatory intestinal disease, colitis-associated cancer and rheumatic arthritis.

BTYNB is a structure-specific nucleic acid binder and IGF2BP1 inhibitor (with an IC₅₀ of 5 μM against hBTYNB). BTYNB disrupts the IGF2BP1-RNA interaction and blocks its binding to oncogenic mRNAs such as c-Myc, MDM2, PD-L1. BTYNB completely blocks the INHBA-Smad2/3 pathway, disrupts the MYCN/IGF2BP1 loop, and thereby induces apoptosis and cell cycle arrest, effectively inhibiting the proliferation and survival of cancer cells. In addition, BTYNB acts as an immune activator and tumor microenvironment modulator, enhances T cell-mediated tumor killing, and produces significant synergistic effects with inhibitors of PD-1, BRD and BIRC5. BTYNB can be used in relevant research on various malignant tumors including ovarian cancer, neuroblastoma, leukemia and melanoma.

Fusaric acid is an orally active multi-pathway inhibitor with the activity of inducing oxidative stress and apoptosis. Fusaric acid can chelate divalent metal cations, damage mitochondrial membrane structure, and activate apoptosis-related proteases such as Caspase-3/7, -8, and -9. Fusaric acid also regulates Bax/Bcl-2 protein, inhibits fibrosis-related signaling pathways such as NF-κB, TGF-β₁/SMADs, and PI3K/AKT/mTOR, and reduces collagen deposition. Fusaric acid is also a dopamine β-hydroxylase inhibitor, which reduces endogenous levels of norepinephrine and epinephrine in the brain, heart, spleen, and adrenal glands. Fusaric acid can play a role in myocardial fibrosis and improve cardiac hypertrophy in heart disease, and can also be used in the study of esophageal cancer and liver cancer.

Hydronidone is an orally active pyridine derivative. Hydronidone is an inhibitor of phosphodiesterase-4 (PDE4) and cyclo-oxygenase (COX) as well as TGF-β. Hydronidone induces mitochondrial dysfunction and triggers apoptosis. Hydronidone can be used for liver fibrosis, anti-inflammation and anti-cancer study.

Disitertide (P144) diammonium is a peptidic transforming growth factor-beta 1 (TGF-β1) inhibitor specifically designed to block the interaction with its receptor. Disitertide diammonium is also a PI3K inhibitor and an apoptosis inducer.