IL-8 Inhibitor

Epinastine hydrochloride (WAL801 hydrochloride) is a selective and orally active histamine H1 receptor antagonist, CD96/PVR inhibitor and mast cell stabilizer. Epinastine hydrochloride has high affinity for neuronal octopamine receptors in locusts (K_i = 2 nM) and honeybees (K_i = 1.1 nM). Epinastine hydrochloride inhibits TARC, IL-8, and IL-4. Epinastine hydrochloride activates anti-colon cancer immunity and inhibits Substance P (HY-P0201)-induced scratching behavior and increased vascular permeability. Epinastine hydrochloride can be used in the research of allergic diseases.

Terminolic acid is a pentacyclic triterpene glycoside and antibacterial agent. Terminolic acid can be isolated from Combretum racemosum. Terminolic acid inhibits proinflammatory cytokines by binding to the receptor active sites of IL-1β and IL-6. Terminolic acid reduces IL-8. Terminolic acid has antibacterial activity against Staphylococcus aureus, Escherichia coli and Enterococcus faecalis with MICs ranging from 64 to 256 μg/mL. Terminolic acid is used in colon cancer research.

Isoforskolin is the principle active component of C. forskohlii native to China. Isoforskolin reduces the secretion of lipopolysaccharide (LPS)-induced cytokines, namely TNF-α, IL-1β, IL-6 and IL-8, in human mononuclear leukocytes. Isoforskolin acts as an anti-inflammatory agent for the treatment of Lyme arthritis.

Darutoside is an orally effective diterpene compound with significant anti-inflammatory, analgesic, wound healing promotion, and immunomodulatory activities. Darutoside reduces edema and pain responses by inhibiting the expression of COX-2 and the migration of inflammatory cells. It regulates macrophage polarization towards the M2 type by inhibiting the NF-κB pathway, alleviating inflammation and promoting wound healing. Through multi-target regulation of metabolic networks, Darutoside significantly alleviates acute gouty arthritis.

PROTAC IRAK4 degrader-13 (Degrader 1) is a selective IRAK4 PROTAC degrader with DC₅₀s of 0.86 and 1.1 nM for monocytes and lymphocytes in PBMCs, respectively. PROTAC IRAK4 degrader-13 significantly induces TIR signal activation, and inhibits the expression of circulating proinflammatory cytokines in Imiquimod (HY-B0180) induced psoriasis mice model. PROTAC IRAK4 degrader-13 can be used for TLR- and IL-1R-driven driven neutrophilic inflammation diseases like hidradenitis suppurativa (HS) and atopic dermatitis (AD) research. Pink: IRAK4 ligand; Blue: E3 ligase ligand; Black: linker

THR-123 TFA is an orally active ALK3 peptide agonist. THR-123 TFA has a relatively weak binding to ALK2, but does not bind to ALK6. THR-123 TFA suppresses inflammation, Apoptosis and the epithelial-to-mesenchymal transition program and reverses established fibrosis in five mouse models of acute and chronic renal injury. THR-123 TFA can be used for the study of kidney fibrosis.

Undecane is a potent cAMP agonist with anti-allergic and anti-inflammatory activities. Undecane inhibits degranulation and the secretion of histamine and TNF-α. Undecane reverses the increased levels of p38 phosphorylation, NF-κB transcriptional activity and target cytokine/chemokine genes, including thymus and activation-regulated chemokine (TARC), macrophage-derived chemokine (MDC) and interleukin-8 (IL-8). Undecane can be used for the study of skin inflammatory disorders, such as atopic dermatitis.

Wnt/β-catenin-IN-6 is an orally active Wnt/β-catenin pathway inhibitor. Wnt/β-catenin-IN-6 blocks the AKT/GSK-3β/β-catenin signaling pathway, leading to reduced expression of Wnt target genes (c-Myc, c-Jun). Wnt/β-catenin-IN-6 reduces COX2 expression and IL-8 levels, highlighting its dual anti-inflammatory and antitumor effects. Wnt/β-catenin-IN-6 can induce apoptosis. Wnt/β-catenin-IN-6 serves as a tool for non-small cell lung cancer (NSCLC) research.

Pretilachlor is a chloroacetamide herbicide with biological activities including endocrine disruption, oxidative stress induction, apoptosis induction, and immunotoxicity. Pretilachlor exerts its effects by interfering with hormone metabolism, inducing oxidative stress, activating apoptotic pathways, and inhibiting immune functions. Pretilachlor upregulates the transcription of P53, Mdm2, and Bbc3, and increases the activities of Caspase3 and Caspase9; it upregulates the transcription of genes in the HPG/HPT axis and the activity of aromatase; it induces oxidative stress, elevates ROS levels, and upregulates CAT, SOD, and GPX. Pretilachlor downregulates the transcription of CXCL-C1C, IL-1β, and IL-8. Pretilachlor disrupts the normal physiological processes and embryonic development of fish, exhibiting significant toxicity. Pretilachlor can be used in studies related to weeding, environmental pollution, and behavioral toxicity in fish.

7,8-Dimethoxycoumarin is a coumarin compound derived from Artemisia caruifolia with oral activity. 7,8-Dimethoxycoumarin inhibits mitochondrial permeability transition pore and H⁺/K⁺-ATPase, and exhibits antioxidant, anti-inflammatory, renoprotective, neuroprotective and gastroprotective effects. 7,8-Dimethoxycoumarin reduces lipid peroxidation (TBARS), increases GSH levels, inhibits myeloperoxidase (MPO) activity, and regulates the expression of inflammatory factors by inhibiting the NF‑κB and MAPK pathways. 7,8-Dimethoxycoumarin ameliorates gastric mucosal injury, alleviates renal tissue lesions and relieves neuropathic pain. 7,8-Dimethoxycoumarin can be used in studies related to acute renal failure, trigeminal neuralgia and gastritis.

4'-Acetoxy resveratrol is a Resveratrol (HY-16561) derivative. 4'-Acetoxy resveratrol upregulates gene expression of elastin, collagen types III and IV, superoxide dismutase (SOD), and catalase (CAT), while downregulating interleukins (IL-1A, IL-1R2, IL-6, IL-8) and cyclooxygenase-2 (COX-2) in human skin models. 4'-Acetoxy resveratrol can be used for skin reasearch.

Girolline (RP 49532) is a protein synthesis inhibitor and a functional modulator of eIF5A. Girolline induces ribosome stalling by interfering with the binding of eIF5A to ribosomes. Girolline also inhibits the production of IL-6 and IL-8, and induces cell cycle arrest in tumor cells. Girolline is applicable to research related to inflammatory diseases, solid tumors, leukemia and malaria.

Lipoxin A4-d₅ is the deuterium labeled Lipoxin A4. Lipoxin A4 (LXA4), an endogenous lipoxygenase-derived eicosanoid mediator, has potent dual pro-resolving and anti-inflammatory properties. Lipoxin A4 inhibits proliferation and inflammatory cytokine/chemokine production of human epidermal keratinocytes (NHEKs) associated with the ERK1/2 and NF-kB pathways. Lipoxin A4 inhibits serum amyloid A (SAA)-mediated IL-8 release with an IC₅₀ value of 25.74 nM.

Phoxim is an organophosphorus pesticide and an orally active inhibitor of cholinesterase and CYP3A, which induces neurotoxicity in Caenorhabditis elegans and causes nephrotoxicity characterized by glomerular atrophy and interstitial fibrosis. Phoxim induces inhibition of the autophagy pathway. Phoxim induces dopaminergic neuron degeneration and exacerbates Aβ-induced paralysis. Phoxim damages enterocytes and disrupts intestinal barrier integrity. Phoxim induces ROS accumulation. Phoxim induces mitochondrial apoptosis, involving upregulation of Bad, Bax, caspase-3, and caspase-9 and downregulation of Bcl-2. Phoxim inhibits mitochondrial functional enzymes (COX, Ca²⁺-Mg²⁺-ATPase, SDH). Phoxim upregulates Nrf2 mRNA expression in the jejunal mucosa. Phoxim increases TNF-α and decreases IL-6 and IL-8 in the intestinal mucosa. Phoxim alters gut microbial composition by increasing total bacteria and Escherichia coli and reducing Lactobacillus. Phoxim enhances energy metabolism in silver carp by upregulating key glycolytic and gluconeogenic enzymes. Phoxim is used in research on neurodegenerative diseases, nephrotoxicity, intestinal oxidative stress and barrier dysfunction, and bacterial sepsis.

Sphingomab (LT1002) is a mouse-derived IgG1 κ monoclonal antibody and also an inhibitor targeting S1P, with high affinity for S1P and a K_d value of 0.03 ± 0.002 nM. Sphingomab blocks S1P-mediated IL-8 release in ovarian cancer cells. Sphingomab exhibits anti-angiogenic activity in a mouse model of choroidal neovascularization. Sphingomab reduces peripheral blood lymphocyte counts. Sphingomab can be used in the research of ovarian cancer and age-related macular degeneration.

Methotrexate-d₃ diammonium is the deuterated-labeled Methotrexate (HY-14519). Methotrexate (Amethopterin; CL14377; WR19039) is an orally active antifolate (Antifolate). Methotrexate inhibits dihydrofolate reductase (DHFR), blocks tetrahydrofolate production, suppresses purine/pyrimidine synthesis and transmethylation, and causes intracellular accumulation of AICAR. Methotrexate promotes extracellular adenosine release, regulates the cytokine network, and inhibits the alarmin function of HMGB1. Methotrexate induces apoptosis and cytotoxicity, upregulates the expression of iNOS and COX-2, suppresses hippocampal neurogenesis, and induces pulmonary fibrosis. Methotrexate is used in the research of various immune and inflammation-related diseases such as arthritis, psoriasis, systemic lupus erythematosus, as well as pulmonary fibrosis and breast cancer.

Gaultherin is an orally active non-steroidal anti-inflammatory agent. Gaultherin selectively inhibits NF-κB, MAPK, COX-2 (IC₅₀ = 0.35 mg/mL), LOX (IC₅₀ = 0.56 mg/mL) and HYAL (IC₅₀ = 28.58 μg/mL) to exert anti-inflammatory, antipyretic and analgesic effects. Gaultherin exhibits modest direct antioxidant capacity, greater in cell-based models. Gaultherin does not affect COX-1 so that avoids the common gastrointestinal side effects of Aspirin (HY-14654).

6-Methoxymellein, a phytoalexin, is a NF-κB inhibitor. 6-Methoxymellein reduces nuclear localization and DNA binding activity of NF-κB p65 and p50 subunits. 6-Methoxymellein decreases mRNA transcription and secretion of IL-6 and IL-8. 6-Methoxymellein reduces the proportion of CD44⁺/CD24⁻ breast cancer cells, decreases expression of c-Myc, Sox-2 and Oct4, inhibits proliferation and migration of breast cancer cells, and reduces mammosphere growth. 6-Methoxymellein inhibits fungal growth of Trichophyton rubrum and Botrytis cinerea, and inhibits Trichophyton rubrum biofilm formation via hyphal disintegration. 6-Methoxymellein can be used for the research of breast cancer, tinea corporis, and carrot post-harvest storage rot.

Methotrexate monohydrate (Amethopterin monohydrate; CL14377 monohydrate; WR19039 monohydrate) is an orally active antifolate (Antifolate). Methotrexate monohydrate inhibits dihydrofolate reductase (DHFR), blocks tetrahydrofolate production, suppresses purine/pyrimidine synthesis and transmethylation, and causes intracellular accumulation of AICAR. Methotrexate monohydrate promotes extracellular adenosine release, regulates the cytokine network, and inhibits the alarmin function of HMGB1. Methotrexate monohydrate induces apoptosis and cytotoxicity, upregulates the expression of iNOS and COX-2, suppresses hippocampal neurogenesis, and induces pulmonary fibrosis. Methotrexate monohydrate is used in the research of various immune and inflammation-related diseases such as arthritis, psoriasis, systemic lupus erythematosus, as well as pulmonary fibrosis and breast cancer.