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Related Concept Videos

Complement System01:27

Complement System

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The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a...
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Antibody Actions01:26

Antibody Actions

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Antibodies, or immunoglobulins, are critical players in the immune system's arsenal against invading pathogens. Produced by B cells and plasma cells, their primary role is to detect and bind to specific antigens, molecules found on the surface of pathogens like bacteria or viruses. Beyond antigen recognition, antibodies perform several vital functions that contribute to immune defense.
Neutralization
Antibodies can bind to pathogens, preventing them from infecting host cells. This process...
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Antimicrobial Proteins01:23

Antimicrobial Proteins

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Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
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Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
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Hypersensitivity Reactions: Cytolytic Reactions01:01

Hypersensitivity Reactions: Cytolytic Reactions

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Type II hypersensitivity involves IgG and IgM antibodies targeting cell surface antigens, leading to cell destruction. This can occur through complement activation, antibody-dependent cell-mediated cytotoxicity (ADCC), or acting as opsonins for phagocytosis. When excessive, these reactions cause significant tissue damage.Drug-induced hemolytic anemia is a common example, where drugs like penicillin or cephalosporins bind to red blood cells, forming drug-protein complexes. These complexes...
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Humoral Immune Responses01:36

Humoral Immune Responses

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Overview
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Biological Methods for Microbial Control01:28

Biological Methods for Microbial Control

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Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
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Updated: Feb 21, 2026

In Vitro Methods for Comparing Target Binding and CDC Induction Between Therapeutic Antibodies: Applications in Biosimilarity Analysis
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Chemical Approaches to Modulating Complement-Mediated Diseases.

Abishek Iyer1,2, Weijun Xu2, Robert C Reid2

  • 1Centre for Inflammation and Disease Research, Institute for Molecular Bioscience , The University of Queensland , Brisbane , QLD 4072 , Australia.

Journal of Medicinal Chemistry
|October 5, 2017
PubMed
Summary
This summary is machine-generated.

Chronic inflammation drives many diseases. New insights into Complement proteins offer therapeutic opportunities for inflammatory and autoimmune diseases by targeting Complement-driven signaling pathways.

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Area of Science:

  • Immunology and Molecular Biology
  • Biochemistry of protein networks

Background:

  • Chronic inflammation underlies numerous diseases, posing significant health burdens.
  • The Complement system, comprising over 40 proteins, plays a crucial role in immunity, pathogen elimination, and tissue repair.
  • Dysregulated or prolonged Complement activation can lead to chronic inflammation and autoimmune conditions.

Purpose of the Study:

  • To review the complex formation, structures, and functions of Complement proteins.
  • To explore new opportunities for therapeutic intervention in Complement-mediated diseases.
  • To consolidate evidence for small molecule and peptide-based drug leads targeting Complement pathways.

Main Methods:

  • Review of recent structural data for Complement proteins.
  • Analysis of emerging knowledge on Complement protein function and signaling.
  • Compilation of data on therapeutic modulators of Complement activation.

Main Results:

  • New structural and functional insights into Complement proteins are enhancing understanding of their roles in health and disease.
  • Emerging small molecule and peptide-based drug leads show promise in preclinical models.
  • Evidence for efficacy in cellular and animal models of inflammatory disease and some human conditions is presented.

Conclusions:

  • Advances in understanding Complement protein structure and function open new avenues for therapeutic development.
  • Targeting Complement-driven signaling offers a promising strategy for managing inflammatory and autoimmune diseases.
  • Further research and clinical validation of Complement modulators are warranted.