Complement System
The complement system, composed of more than 30 serum and cell surface components, is collaborating in recognition and elimination of pathogens as a part of both the innate and acquired immune systems. Once the complement system is activated, a chain of reactions involving proteolysis and assembly occurs, resulting in cleavage of the third complement component (C3). The cascade up to C3 cleavage is called the activation pathway. There are three activation pathways: the classical, lectin, and alternative pathways.
The complement cascade is a dual-edged sword, causing protection against bacterial and viral invasion by promoting phagocytosis and inflammation. Pathologically, complement can cause substantial damage to blood vessels (vasculitis), kidney basement membrane and attached endothelial and epithelial cells (nephritis), joint synovium (arthritis), and erythrocytes (hemolysis) if it is not adequately controlled.
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Complement System Inhibitors
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Complement System Agonists
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Complement System Antagonists
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Complement System Activators
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Complement System Modulator
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Complement System Controls
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Complement System Ligands
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Complement System Proteins
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Complement System Related Products (211)
Related Products (211)
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Recombinant Proteins (113)
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Antibodies (7)
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4-Octylphenol
0 ImagesCat. No.: HY-W130878CAS No.: 1806-26-44-Octylphenol is a hormone disruptor that has gender-specific effects on male reproductive cells, significantly reducing the mitotic index and the number of spermatogonia. 4-Octylphenol can cause inflammatory damage to fish gills by activating the complement system through the C3a/C3aR axis and the C5a/C5aR1 axis, this leads to complement activation and causes immune suppression due to the imbalance between Th1/Th2 cells and regulatory T cells (Treg)/Th17 cells, as well as inflammatory damage via the Toll-like receptor 7 (Toll-like Receptor (TLR))/IκBα/NF-κB pathway.
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Lanoracopan
0 ImagesFactor B-IN-5 (Example 5 target compound) is a potent complement factor B inhibitor, with an IC50 of 1.2 μM. Factor B-IN-5 can be used for the research of diseases related to inflammation and immunity.
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EG00229 trifluoroacetate (Standard)
0 ImagesCat. No.: HY-10799RCAS No.: 1210945-69-9EG00229 trifluoroacetate (Standard) is the analytical standard of EG00229 (trifluoroacetate) (HY-10799). This product is intended for research and analytical applications. EG00229 is a neuropilin 1 (NRP1) receptor antagonist. EG00229 selectively inhibits VEGF-A binding to NRP1 b1 domain with an IC50 of 3 μM, but has no effect on VEGFA binding to VEGFR-1 and VEGFR-2.
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Anti-Mouse C5aR Antibody (20/70)
0 ImagesCat. No.: HY-P991796Anti-Mouse C5aR Antibody (20/70) reacts with mouse C5aR. Anti-Mouse C5aR Antibody (20/70) blocks C5aR both in vivo and in vitro. Recommend Isotype Controls: Rat IgG2b kappa, Isotype Control (HY-P990682).
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Certepetide-13C6,15N2
0 ImagesCat. No.: HY-P3448SSynonyms: CEND-1-13C6,15N2; iRGD-13C6,15N2; LSTA1-13C6,15N2Certepetide-13C6,15N2 (CEND-1-13C6,15N2) is the 13C- and 15N-labeled Certepetide (HY-P3448). Certepetide (CEND-1) is a bifunctional cyclic peptide (a.k.a. iRGD). Certepetide is a tumor-penetrating enhancer via RGD motif interaction with alphav-integrins and via activating NRP-1, and transforms the solid tumor microenvironment into a temporary agent conduit. Certepetide accumulates in tumors, and is used in the research of pancreatic cancer and other solid tumors.
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Anti-GC1q R/C1QBP Antibody (60.11)
0 ImagesCat. No.: HY-P990844Anti-GC1q R/C1QBP Antibody (60.11) is a kind of mouse IgG1 κ chimeric antibody inhibitor, targeting to human GC1q R/C1QBP. Anti-GC1q R/C1QBP Antibody (60.11) can neutralize GC1q R. Anti-GC1q R/C1QBP Antibody (60.11) can be used for the researches of cancer, infection and inflammation, such as MDA231 tumor and S. aureus induced infective endocarditis (IE).
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Cyclosporin A-d3
0 ImagesCat. No.: HY-B0579S1CAS No.: 222295-76-3Synonyms: Cyclosporine A-d3; Ciclosporin A-d3; CsA-d3Cyclosporin A-d3 (Cyclosporine A-d3) is the deuterated-labeled Cyclosporin A (HY-B0579). Cyclosporin A (Cyclosporine A) is an immunosuppressant which binds to the cyclophilin and inhibits phosphatase activity of protein phosphatase 2B (PP2B/calcineurin) with an IC50 of 5 nM. Cyclosporin A is a molecular glue, binds to cyclophilin and calcineurin, leading to inactivation of nuclear Factor of activated T Cells (NFAT) and a subsequent decrease in the immune response. Cyclosporin A also inhibits CD11a/CD18 adhesion.
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L-156602
0 ImagesCat. No.: HY-16384CAS No.: 125228-51-5Synonyms: Antibiotic L 156602; PD 124966L-156602 is a C5a receptor antagonist. L-156602 inhibits inflammation, and the migration of monocytes and neutrophils to the infiltrating site in mouse inflammatory models. L-156602 suppresses the efferent phase of delayed-type hypersensitivity (DTH).
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Certepetide-13C2,15N
0 ImagesCat. No.: HY-P3448S1Synonyms: CEND-1-13C2,15N; iRGD-13C2,15N; LSTA1-13C2,15NCertepetide-13C2,15N (CEND-1-13C2,15N) is the 13C- and 15N-labeled Certepetide (HY-P3448). Certepetide (CEND-1) is a bifunctional cyclic peptide (a.k.a. iRGD). Certepetide is a tumor-penetrating enhancer via RGD motif interaction with alphav-integrins and via activating NRP-1, and transforms the solid tumor microenvironment into a temporary agent conduit. Certepetide accumulates in tumors, and is used in the research of pancreatic cancer and other solid tumors.
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Leukadherin-1 (Standard)
0 ImagesCat. No.: HY-15701RCAS No.: 344897-95-6Leukadherin-1 (Standard) is the analytical standard of Leukadherin-1. This product is intended for research and analytical applications. Leukadherin-1, a specific agonist of the leukocyte surface integrin CD11b/CD18, increases CD11b/CD18-dependent cell adhesion to fibrinogen with an EC50 of 4 μM. Leukadherin-1 enhances leukocyte adhesion to ligands (such as ICAM-1) and vascular endothelium and thus reduces leukocyte transendothelial migration and influx to the injury sites. Leukadherin-1 suppresses innate inflammatory signaling.
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Pegcetacoplan-13C3,15N TFA
0 ImagesCat. No.: HY-P3252ASPegcetacoplan-13C3,15N TFA is the 13C- and 15N-labeled Pegcetacoplan TFA. Pegcetacoplan is a pegylated complement C3/C3b inhibitor. Pegcetacoplan acts by specifically binding to and inhibiting C3 and C3b, thereby suppressing the complement cascade at its proximal stage. Pegcetacoplan is not a known inhibitor or inducer of CYP450 isoenzymes. Pegcetacoplan can be used for the research of complement-mediated diseases, including paroxysmal nocturnal hemoglobinuria (PNH) and age-related macular degeneration (AMD).
