Anti-beta-glucan-like immunoprotective candidacidal antiidiotypic antibodies

Walter Magliani1, Stefania Conti, Laura Giovati

  • 1Sezione di Microbiologia, Dipartimento di Patologia e Medicina di Laboratorio, Universita degli Studi di Parma, Viale Gramsci, 14, 43100 Parma, Italy. magliwal@unipr.it

Insights

New strategies targeting fungal beta-glucans show promise for treating candidiasis. Anti-beta-glucan antibodies can provide fungicidal protection against Candida infections, offering new avenues for immunoprevention and immunotherapy.

Area of Science:

  • Mycology
  • Immunology
  • Infectious Diseases

Background:

  • Candidiasis presents a high mortality rate and challenges due to antimicrobial resistance.
  • Fungal beta-glucans are identified as key targets for novel antifungal therapies.
  • Existing treatments face limitations, necessitating innovative approaches.

Purpose of the Study:

  • To explore the potential of anti-beta-glucan antibodies in combating candidiasis.
  • To investigate the role of beta-glucan cell wall killer toxin receptors in eliciting protective immunity.
  • To assess the efficacy of anti-idiotypic antibodies and peptide mimotopes against pathogenic microorganisms.

Main Methods:

  • Detection of anti-beta-glucan antibodies in sera.
  • Elicitation of fungicidal protective activity using glucan-based vaccines.
  • Utilizing killer toxin-neutralizing monoclonal antibodies as immunogens.
  • Evaluating in vitro and in vivo microbicidal activity of antibodies and mimotopes.

Main Results:

  • Anti-beta-glucan antibodies are present in animal and human sera.
  • Glucan-based vaccines and killer toxin receptors can induce protective anticandidal antibodies.
  • Anti-idiotypic anti-beta-glucan-like antibodies mediate anticandidal protection.
  • Antibodies and mimotopes demonstrate microbicidal activity against various pathogens.

Conclusions:

  • Anti-beta-glucan antibodies represent a viable strategy for candidiasis treatment and prevention.
  • Targeting fungal beta-glucans offers a transphyletic approach to anti-infectious control.
  • Immunoprevention and immunotherapy using anti-beta-glucan strategies hold significant therapeutic potential.

Related Concept Videos

Humoral Immune Responses01:36

Humoral Immune Responses

Overview
Antibody Actions01:26

Antibody Actions

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...
Cross-reactivity00:42

Cross-reactivity

Overview
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...