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-P99767
    Olendalizumab
    		Inhibitor
    Olendalizumab (ALXN1007) is a mouse-derived and humanized IgG2-G4-κ antibody, targeting to Complement protein C5a (Ki=60 pM). Olendalizumab targets the complement inflammatory pathway. Moreover, Olendalizumab can be used for research of complement mediated disorder caused by corona virus.
    Olendalizumab
  • HY-153098A
    ARC186 sodium
    		Inhibitor
    ARC186 (sodium) is an unconjugated 40KDa PEG aptamer with a sequence identical to HY-147080 Avacincaptad pegol (ARC1905) sodium. ARC1905 is highly potent complement inhibitors that function by blocking the convertase-catalyzed activation of C5.
    ARC186 sodium
  • HY-101502AR
    SB290157 trifluoroacetate (Standard)
    		Antagonist
    SB290157 (trifluoroacetate) (Standard) is the analytical standard of SB290157 (trifluoroacetate) (HY-101502A). This product is intended for research and analytical applications. SB290157 trifluoroacetate is a potent and selective C3a receptor antagonist with an IC50 of 200 nM.
    SB290157 trifluoroacetate (Standard)
  • HY-160901
    CP-289,503
    		Inhibitor 98.21%
    CP-289,503 is an inhibitor of the complement C5a receptor with an IC50 of 1 μM. C5a acts as an activator of leukocytes and phagocytes during complement system activation. The C5a receptor can bind to C5a, which can stimulate the upregulation of cell surface integrins and degranulation of inflammatory cells, leading to endothelial cell damage. C5a receptor inhibitors can block C5a signaling and inhibit a variety of inflammatory diseases.
    CP-289,503
  • HY-15701A
    (Z)-Leukadherin-1
    		Agonist 98.0%
    (Z)-Leukadherin-1 (ADH-503 free base) is an orally active and allosteric CD11b agonist. (Z)-Leukadherin-1 leads to the repolarization of tumor-associated macrophages, reduction in the number of tumor-infiltrating immunosuppressive myeloid cells, and enhances dendritic cell responses.
    (Z)-Leukadherin-1
  • HY-P1398
    Compstatin control peptide
    		Control 99.95%
    Compstatin control peptide is a negative control of Compstatin (HY-P1036). Compstatin is a potent complement system C3 inhibitor.
    Compstatin control peptide
  • HY-153098
    ARC186
    		Inhibitor
    ARC186 (sodium) is an unconjugated 40KDa PEG aptamer with a sequence identical to HY-147080 Avacincaptad pegol (ARC1905) sodium. ARC1905 is highly potent complement inhibitors that function by blocking the convertase-catalyzed activation of C5.
    ARC186
  • HY-112199
    CP-447697
    		Antagonist 99.70%
    CP-447697 is a lipophilic C5a receptor antagonist with an IC50 value of 31 nM. CP-447697 can be used for the research of inflammation.
    CP-447697
  • HY-136556
    Factor B-IN-1
    		Inhibitor
    Factor B-IN-1 is a Factor B inhibitor extracted from patent WO2013164802A1, Example 24.
    Factor B-IN-1
  • HY-P1505
    C3a (70-77)
    C3a (70-77) is an octapeptide corresponding to the COOH terminus of C3a, exhibits the specificity and 1 to 2% biologic activities of C3a.
    C3a (70-77)
  • HY-P99886
    Pexelizumab
    		Inhibitor 99.0%
    Pexelizumab (h5G1. 1-SC) is a humanized scFv monoclonal antibody directed against the C5 complement component. Pexelizumab inhibits apoptosis and leukocyte infiltration. Pexelizumab can be used for the research of cerebral IR injury and myocardial infarction.
    Pexelizumab
  • HY-B0579S2
    Cyclosporin A acetate-d4
    		Inhibitor 99.90%
    Cyclosporin A acetate-d4 (Cyclosporine A acetate-d4; Ciclosporin A acetate-d4) is a deuterium 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 also inhibits CD11a/CD18 adhesion.
    Cyclosporin A acetate-d<sub>4</sub>
  • HY-P11286
    A7RC
    		99.87%
    A7RC is a multifunctional peptide used in tumor-targeted therapy, with Cysteine added to the C-terminal of the A7R peptide (sequence: ATWLPPR). A7R (HY-P1663) is a ligand of the NRP-1 receptor, regulating intracellular signal transduction related to tumor vascularization and tumor growth.
    A7RC
  • HY-N7401
    Entadamide-A-β-D-glucopyranoside
    		98.15%
    Entadamide-A-β-D-glucopyranoside is one of the major components in the seeds of Entada phaseoloides. Entadamide-A-β-D-glucopyranoside has anti-complement activitie.
    Entadamide-A-β-D-glucopyranoside
  • HY-P992142
    Vonaprument
    		Inhibitor
    Vonaprument is an intravitreally injected C1q antibody fragment, which is a human monoclonal antibody. Vonaprument is applicable to research related to age-related macular degeneration.
    Vonaprument
  • HY-P11647A
    RPARPAR acetate
    		Ligand 99.47%
    RPARPAR acetate is a CendR tumor-penetrating peptide. RPARPAR acetate directly binds to the NRP-1 and NRP-2 receptors on the surface of tumor cells, triggering cellular internalization, vascular extravasation, and penetration into tumor tissues. RPARPAR acetate serves as an efficient ligand for targeting nanocarriers to NRP-1-positive tumors. RPARPAR acetate is applicable in research on tumor targeting and drug delivery.
    RPARPAR acetate
  • HY-153785
    NH2-C6-ARC186 sodium
    		Inhibitor
    NH2-C6-ARC186 sodium is a modified ARC186 (HY-153098) with NH2-C6 that can be coupled to other peptides or molecules. ARC186 is a aptamer and a highly potent complement inhibitor that function by blocking the convertase-catalyzed activation of C5.
    NH2-C6-ARC186 sodium
  • HY-P990745
    Izastobart
    		Ligand 99%
    Izastobart is an anti-C5AR1 human IgG1 λ2 monoclonal antibody. Recommend Isotype Controls: Human IgG1 lambda2, Isotype Control (HY-P990096).
    Izastobart
  • HY-P990998
    Greziprubart
    		Inhibitor
    HY-P990998 is an C5a-targeting IgG1κ type human antibody, the recommed isotype control is Human IgG1 kappa, Isotype Control (HY-P99001).
    Greziprubart
  • HY-P991229
    MK-4721
    AGS-1C4D4 is a fully human IgG1κ monoclonal antibody targeting PSCA, with a Kd value of 0.2 nM. AGS-1C4D4 mediates antibody-dependent cellular cytotoxicity (ADCC) and complement-dependent cytotoxicity (CDC) against PSCA-expressing cells. AGS-1C4D4 can be used for the research of pancreatic cancer.
    MK-4721
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity