IL-8
IL-8/CXCL8 is a CXC chemokine produced during inflammation that activates neutrophils, inducing chemotaxis, exocytosis, respiratory burst, and neutrophil accumulation in vivo[1]. Mechanistically, IL-8 acts through CXCR1/CXCR2 to control target-cell adhesion, migration, and function, while downstream signaling supports actin remodeling, calcium mobilization, granule exocytosis, and respiratory burst[2]. In inflammatory and cancer contexts, the CXCL8-CXCR1/2 axis participates in inflammatory mediator trafficking, tumor progression, metastasis, and diseases including COPD, asthma, cystic fibrosis, and cancer[3]. Compared with related ELR+ CXC chemokines, IL-8 is distinguished by dual activation of CXCR1 and CXCR2, whereas CXCR2 also recognizes CXCL1, CXCL2, CXCL3, CXCL5, CXCL6, and CXCL7[4]. CXCL8 monomers and dimers differentially regulate CXCR1 and CXCR2, supporting receptor-selective experimental designs for neutrophil recruitment and cytotoxic activity studies[4]. For experimental applications, noncompetitive allosteric CXCR1/CXCR2 inhibitors block inflammatory CXCL8 receptor signaling, and CXCL8-derived antagonists can reduce neutrophil infiltration in inflammatory models[5][6].
References:
- [1]. Baggiolini M, et al. Interleukin-8, a chemotactic and inflammatory cytokine. FEBS Lett. 1992 Jul 27;307(1):97-101. [Content Brief]
- [2]. Matsushima K, et al. Interleukin-8: An evolving chemokine. Cytokine. 2022 May;153:155828. [Content Brief]
- [3]. Ha H, et al. Role of the CXCL8-CXCR1/2 Axis in Cancer and Inflammatory Diseases. Theranostics. 2017 Apr 7;7(6):1543-1588. [Content Brief]
- [4]. Nasser MW, et al. Differential activation and regulation of CXCR1 and CXCR2 by CXCL8 monomer and dimer. J Immunol. 2009 Sep 1;183(5):3425-32. [Content Brief]
- [5]. Bertini R, et al. Noncompetitive allosteric inhibitors of the inflammatory chemokine receptors CXCR1 and CXCR2: prevention of reperfusion injury. Proc Natl Acad Sci U S A. 2004 Aug 10;101(32):11791-6. [Content Brief]
- [6]. Gordon JR, et al. The combined CXCR1/CXCR2 antagonist CXCL8(3-74)K11R/G31P blocks neutrophil infiltration, pyrexia, and pulmonary vascular pathology in endotoxemic animals. J Leukoc Biol. 2005 Dec;78(6):1265-72. [Content Brief]
-
IL-8 Related Products (101)
Related Products (101)
-
Recombinant Proteins (16)
-
TriDAP dihydrochloride
0 ImagesCat. No.: HY-P5522APurity: 98.65%Synonyms: L-Ala-γ-D-Glu-meso-diaminopimelic acid dihydrochlorideTriDAP dihydrochloride (L-Ala-γ-D-Glu-meso-diaminopimelic acid dihydrochloride) is a NOD1 agonist with a Kd value of 34.5 μM. TriDAP dihydrochloride enhances the binding of NOD1-RICK, promotes RICK phosphorylation, and activates the NF-κB, TAK1, MEK/ERK, p38 and interferon response pathways. TriDAP dihydrochloride downregulates Runx2 via increasing ubiquitination and reduces trabecular bone parameters. TriDAP dihydrochloride decreases IκBα levels and increases p65 levels. TriDAP dihydrochloride induces the secretion of proinflammatory mediators IL-8 and prostaglandins, triggers tissue inflammation and innate immune activation, and inhibits SARS-CoV-2 replication in lung epithelial cells. TriDAP dihydrochloride increases the RANKL/OPG ratio in mice, reduces bone mass and enhances osteoclast activity, and inhibits new bone formation by decreasing the mineralization deposition rate in mice. TriDAP dihydrochloride can be used in research related to pulpitis, chronic ulcerative colitis, Crohn's disease and SARS-CoV-2 infection.
-
Methotrexate (Standard)
0 ImagesSynonyms: Amethopterin (Standard); CL14377 (Standard); WR19039 (Standard)Methotrexate (Standard) (Amethopterin (Standard); CL14377 (Standard); WR19039 (Standard)) is the analytical standard of Methotrexate (HY-14519). This product is intended for research and analytical applications. 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.
-
Nadifloxacin
0 ImagesSynonyms: OPC7251Nadifloxacin (OPC7251) is a broad-spectrum quinolone antibiotic. Nadifloxacin inhibits bacterial DNA gyrase and topoisomerase IV, interfering with DNA replication. It also suppresses the production of proinflammatory cytokines (such as IL-1α, IL-6, and IL-8). Nadifloxacin exhibits antibacterial activity against various pathogens, including Propionibacterium acnes and Staphylococcus aureus. Nadifloxacin also exhibits anti-inflammatory activity. Nadifloxacin can be used in the research of skin infections such as acne vulgaris, folliculitis, and impetigo.
-
1-Tetradecanol
0 Images1-Tetradecanol is a straight-chain saturated fatty alcohol and antibacterial agent. 1-Tetradecanol can be isolated from Myristica fragrans. 1-Tetradecanol possesses antibacterial and anti-inflammatory (periodontitis) activity.
-
Elubrixin tosylate
0 ImagesSynonyms: SB-656933 tosylateElubrixin tosylate (SB-656933 tosylate) is a potent, selective, competitive, reversible and orally active CXCR2 antagonist and an IL-8 receptor antagonist. Elubrixin tosylate inhibits neutrophil CD11b upregulation (IC50 of 260.7 nM) and shape change (IC50 of 310.5 nM). Elubrixin tosylate has the potential for inflammatory diseases research, such as inflammatory bowel disease and airway inflammation.
-
Methotrexate-d3
0 ImagesMethotrexate-d3 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.
-
Flixebrutinib
0 ImagesSynonyms: TL-895Flixebrutinib (TL-895) is a potent, orally active, ATP-competitive, and highly selective irreversible BTK inhibitor. Flixebrutinib is active against recombinant BTK (average IC50: 1.5 nM) and inhibits only three additional kinases BLK, BMX (IC50 = 1.6 nM) and TXK with IC50 within tenfold of BTK activity. Flixebrutinib inhibits BTK auto-phosphorylation at the Y223 phosphorylation site (IC50: 1-10 nM). The Flixebrutinib effectively inhibits the production of inflammatory factors such as IL-8, IL-1β, MCP-1 and TNF-α by monocytes or macrophages, and reduces the chemotactic migration of MF cells towards SDF-1. Flixebrutinib is used be for studies of chronic lymphocytic leukemia (CLL), myelofibrosis (MF), and B-cell malignancies.
-
NOD2 antagonist 1
0 ImagesNOD2 antagonist 1 is a selective NOD2 antagonist with an IC50 of 5.23 μM. NOD2 antagonist 1 acts directly on the NOD2 protein, downregulates the secretion of pro-inflammatory cytokines such as IL-8 and TNF-α, and inhibits the synergistic cross-response of inflammation mediated by NOD2 and TLR4. NOD2 antagonist 1 can be used in studies related to immunity and inflammation.
-
Epinastine hydrochloride
0 ImagesSynonyms: WAL801 hydrochlorideEpinastine 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 (Ki = 2 nM) and honeybees (Ki = 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
0 ImagesTerminolic 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
0 ImagesSynonyms: Coleonol BIsoforskolin 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
0 ImagesDarutoside 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
0 ImagesPROTAC 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
0 ImagesCat. No.: HY-P11354APurity: 99.91%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
0 ImagesUndecane 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.
-
Linoleate sodium
0 ImagesLinoleate sodium is an orally active IL8 regulator via the JNK and NF-κB pathway. Linoleate sodium can change the composition of fatty acids and the production of metabolites in cells. Linoleate sodium has anti-inflammatory, immune-regulating, and tumor cell growth-affecting activities.
-
BML-280
0 ImagesSynonyms: VU0285655-1BML-280 (VU0285655-1) is a potent and selective phospholipase D2 (PLD2) inhibitor. BML-280 has the ability to prevent caspase-3 cleavage and reduction in cell viability induced by high glucose. BML-280 can be used for rheumatoid arthritis research.
