lung fibrosis

3-CPs (3-Carbethoxypsoralen) is a bleomycin-induced serotypic podoplanar polysaccharide in mouse lung fibrosis that belongs to the psoralen family and interferes with antibody-mediated bacterial killing.3-CPs delays bleomycin-induced lung fibrosis in mice and can be used in studies of airway inflammation and asthma.

Bersiporocin is a novel prolyl-tRNA synthetase (PRS) inhibitor that exerts antifibrotic effects through downregulation of collagen synthesis and is well tolerated in the clinic. In cellular and animal models of idiopathic pulmonary fibrosis (IPF), DWN12088 significantly reduced collagen synthesis and improved lung function.

Lonidamine (Diclondazolic Acid) is an indazole carboxylic acid derivative, principally inhibiting aerobic glycolytic activity, by its effect on mitochondrially-bound hexokinase (HK).

1-Thioglycerol (alpha-Thioglycerol) is an antioxidant thioglycerol that scavenges free radicals and reduces oxidative stress as a media component, and is used as a matrix in fast atom bombardment mass spectrometry (FAB-MS) and liquid secondary ion mass spectrometry (LSIMS).

CLT-28643 is a potent and specific α5β1-Integrin inhibitor that prevents fibrosis in glaucoma filtration surgery (GFS), inhibits tumor growth and angiogenesis, suppresses fibrosis and inflammation in a bleomycin-induced lung fibrosis model, and improves insulin sensitivity and cardiac function in H9C2 cells from obese mice.

Rupatadine (UR-12592, rupatadine) is a potent and orally available dual antagonist of PAF and histamine H1 receptors with Ki values of 0.55 μM and 0.1 μM, respectively, which provides relief of allergic symptoms and anti-inflammatory properties, and is used in allergic rhinitis and chronic urticaria.

1. Peimisine (Ebeiensine) can affect M-receptor, excit β-receptor, restrain the release of internal calcium, and promote to releaseing nitrogen monoxidum in order to relax tracheal smooth muscle and relieve asthma. 2. Peimisine can attenuate lung tissue injury( ALI), LDH and MDA amount in ALI mice in a dose dependent manner, it also lower the total protein, total white blood cells, lymphocyte and neutrophilic leukocyte in bronchoalveolar lavage fluid( BALF); suggests that peimisine can play a protective role against LPS-induced acute lung injury. 3. Peimisine has the protective effect on the experimental hepatic fibrosis formation, the possible mechanisms are associated with inhibiting fibrogenesis and fibrosis accumulation, and decreasing lipid peroxidation. 4. Peimisine can inhibit angiotensin I converting enzyme activity in a dose-dependent manner, displaying 5 % inhibitory concentration values of 526.5 microM, thus, it may have antihypertensive action.

1. Peiminine (Raddeanine) is an effective inhibitor for lung inflammation and pulmonary fibrosis in a rat model of bleomycin-induced lung injury.

Gefitinib hydrochloride (ZD-1839 hydrochloride) is an orally active selective and potent tyrosine kinase (EGFR) inhibitor. Gefitinib hydrochloride exhibits antitumor activity, selectively inhibits EGF-stimulated tumor cell growth, induces cellular autophagy, improves lung dysfunction, and inhibits inflammation. Gefitinib hydrochloride has antitumor activity, selectively inhibits EGF-stimulated tumor cell growth, induces cellular autophagy, ameliorates lung dysfunction, and inhibits the progression of inflammation and fibrosis.

PAT-048 is an effective and selective autotaxin inhibitor. PAT-048 reduces dermal fibrosis in vivo. PAT-048 also inhibits IL-6 mRNA expression but displays no effect on autotaxin protein and pulmonary lysophosphatidic acid (LPA) production in the lung fibrosis model. PAT-048 has an IC50 and IC90 of 20 nM and 200 nM for autotaxin in mouse plasma.

Cyy-272 is an orally active JNK inhibitor with IC50 values of 1.25, 1.07, and 1.24 μM against JNK1, JNK2, and JNK3, respectively. It exerts anti-inflammatory effects by inhibiting the phosphorylation of JNK, thereby alleviating acute lung injury (ALI) induced by lipopolysaccharide (LPS). Moreover, Cyy-272 significantly reduces inflammation in cardiomyocytes and cardiac tissues caused by high lipid concentrations, further mitigating resultant cardiac hypertrophy, fibrosis, and apoptosis. Cyy-272 is utilized in the study of obesity-related myocarditis.

SR-302 is a potent and selective inhibitor of DDR p38, with IC50 values of 0.125 μM for p38α, 0.023 μM for DDR1, and 0.018 μM for DDR2. It is utilized in research related to fibrotic diseases, such as kidney and lung fibrosis, atherosclerosis, and various types of cancer.

PROTAC JNK1-targeted-1 (PA2) is a JNK1 PROTAC degrader with a DC50 of 10 nM. It effectively reduces fibronectin levels and is useful in lung fibrosis research. [Pink: JNK1 inhibitor; Black: linker; Blue: CRBN Ligand]

TRPV1-IN-3 (compound 14) is a TRPV1 inhibitor utilized in idiopathic pulmonary fibrosis research. It demonstrates antifibrotic activity in vitro (IC50 = 0.51 μM) by inhibiting the TGF-β Smads and MAPK pathways, thereby affecting the expression of fibrosis markers collagen I and α-SMA. In vivo, TRPV1-IN-3 significantly reduces collagen deposition in lung tissue, improves alveolar structure, and increases survival rates in mice with Bleomycin-induced pulmonary fibrosis.

PDE4-IN-26 (Compound A5) is an orally active, highly selective inhibitor of PDE4. It exhibits anti-inflammatory properties by inhibiting p38 MAPK phosphorylation. In mouse models of acute lung injury and chronic obstructive pulmonary disease, PDE4-IN-26 reduces lung inflammation, damage, and fibrosis, while promoting sputum secretion and alleviating cough. It is useful for researching lung injury-related diseases.

FGFRs-IN-1 (Compound A16) is an orally active inhibitor targeting FGFR1 2 3 4, with IC50 values of 2.3, 7, 11, and 163 nM respectively. It also inhibits VEGFR1 2 3, Abl, and Flt3, with IC50 values of 61, 176, 112, 26, and 353 nM. The compound shows weak inhibition of CYP enzymes. FGFRs-IN-1 reduces the expression of α-SMA and collagen I, and it inhibits epithelial-mesenchymal transition (EMT) in A549 cells stimulated by TGF-β1. Additionally, FGFRs-IN-1 demonstrates anti-inflammatory activity in mouse models of lung fibrosis induced by Bleomycin and liver fibrosis induced by CCl4.

GTS-21 dihydrochloride (DMBX-anabaseine) is a nAChRs agonist. nAChRs are neuron receptor proteins that activated by the binding of the neurotransmitter ACh.

1. Ecliptasaponin A (Echinocystic acid-3-o-glucoside) has protective effects against the pulmonary fibrosis induced by bleomycin via reducing the oxidative stress, lung tissue inflammation, and the subsequent epithelial-mesenchymal transition.

Nrf2 activator-1 is a potent activator of NF-E2-related factor 2 (Nrf2) and can be used to study COPD and other respiratory diseases, including asthma, acute lung injury (ALI), acute respiratory distress syndrome (ARDS), and pulmonary fibrosis.

LasR-IN-2, a compound that inhibits the activity of LasR, forms hydrogen bonding with the TRY-56 residue. It finds application in the study of bacterial infection, neutropenia, severe burns, and chronic lung disease in cystic fibrosis (CF) [1].

ATX inhibitor 15 (compound 30) is an indole-based carbamate derivative with a strong inhibitory effect on autotaxin (ATX), demonstrated by an IC50 of 2.17 nM. It effectively inhibits ATX activity in vivo, suppresses the expression of pro-fibrotic genes, and exhibits protective effects in Bleomycin-induced lung fibrosis in mice [1].

PDE1-IN-4 is a potent and selective inhibitor of PDE1 (phosphodiesterase-1), acting on PDE1C (IC50: 10 nM), PDE1A (IC50: 145 nM) and PDE1B (IC50: 354 nM). PDE1-IN-4 regulates cAMP (3′,5′-cyclic adenosine monophosphate) and cGMP (3′,5′-cyclic guanosine monophosphate) and exhibits antifibrotic effects. PDE1-IN-4 can inhibit TGF-β1-induced differentiation of human lung fibroblasts, and can be used to study idiopathic pulmonary fibrosis (IPF).

ATX inhibitor 11 is a potent inhibitor of ATX (autotaxin) (IC50: 2.7 nM). ATX inhibitor 11 alleviates the severity of fibrotic tissue and effectively reduces the deposition of α-SMA, a biomarker of fibrosis, in a mouse model of fibrosis. ATX inhibitor 11 can be used to study lung fibrosis.

Camostat, also known as FOY 305, is a serine protease inhibitor. Camostat is used in the treatment of some forms of cancer and is also effective against some viral infections, as well as inhibiting fibrosis in liver or kidney disease or pancreatitis. It is an inhibitor of the enzyme transmembrane protease, serine 2 (TMPRSS2). Inhibition of TMPRSS2 partially blocked infection by SARS-CoV and Human coronavirus NL63 in HeLa cell cultures. In vitro study showed that camostat significantly reduces the infection of Calu-3 lung cells by SARS-CoV-2, the virus responsible for COVID-19.