2. Signaling Pathways
  3. Immunology/Inflammation
  4. Complement System

Complement System

Complement System

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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.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-P992512
    ANX-M1 (Mouse IgG1)
    		Inhibitor
    ANX-M1 Mouse IgG1 is a brain-penetrant C1q inhibitor. ANX-M1 Mouse IgG1 blocks classical complement pathway activation, reduces C1q concentrations in brain and plasma, and inhibits microglia-mediated synapse engulfment. ANX-M1 Mouse IgG1 can be used for the research of Huntington's disease, Alzheimer's disease, retinopathy and neuropathic pain.
    ANX-M1 (Mouse IgG1)
  • HY-10799R
    EG00229 trifluoroacetate (Standard)
    		Antagonist
    EG00229 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.
    EG00229 trifluoroacetate (Standard)
  • HY-P3448S
    Certepetide-13C6,15N2
    		Activator
    Certepetide-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.
    Certepetide-<sup>13</sup>C<sub>6</sub>,<sup>15</sup>N<sub>2</sub>
  • HY-P990844
    Anti-GC1q R/C1QBP Antibody (60.11)
    		Inhibitor
    Anti-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).
    Anti-GC1q R/C1QBP Antibody (60.11)
  • HY-B0579S1
    Cyclosporin A-d3
    Cyclosporin A-d3 is the d3-labeled Cyclosporin A (HY-B0579).
    Cyclosporin A-d<sub>3</sub>
  • HY-16384
    L-156602
    		Antagonist
    L-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).
    L-156602
  • HY-P3448S1
    Certepetide-13C2,15N
    		Activator
    Certepetide-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.
    Certepetide-<sup>13</sup>C<sub>2</sub>,<sup>15</sup>N
  • HY-15701R
    Leukadherin-1 (Standard)
    		Agonist
    Leukadherin-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.
    Leukadherin-1 (Standard)
  • HY-P3252AS
    Pegcetacoplan-13C3,15N TFA
    Pegcetacoplan-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).
    Pegcetacoplan-<sup>13</sup>C<sub>3</sub>,<sub>15</sub>N TFA
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity