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Related Concept Videos

Special Features of Adaptive Immunity01:20

Special Features of Adaptive Immunity

907
The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
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Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

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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...
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Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

68
Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
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Cytotoxic T Cells-mediated Immune Response01:27

Cytotoxic T Cells-mediated Immune Response

998
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
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Related Experiment Video

Updated: Jul 25, 2025

Author Spotlight: Innovative Microneedle-Based Strategies for Enhanced Exosome Delivery and Stability
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Exploiting Unique Features of Microneedles to Modulate Immunity.

Camilla Edwards1, Shrey A Shah1, Thomas Gebhardt2

  • 1Fischell Department of Bioengineering, University of Maryland, College Park, MD, 20742, USA.

Advanced Materials (Deerfield Beach, Fla.)
|June 28, 2023
PubMed
Summary

Microneedle arrays (MNAs) offer pain-free delivery of vaccines and immunotherapies directly to skin immune cells, enhancing immune responses. Challenges in MNA manufacturing and sterility must be addressed for widespread clinical adoption.

Keywords:
autoimmunity and allergybiomaterial and nanotechnologycancerinfectious diseasevaccine and immunotherapy

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Area of Science:

  • Biotechnology and Biomedical Engineering
  • Immunology and Vaccinology
  • Dermal Drug Delivery Systems

Background:

  • Microneedle arrays (MNAs) are innovative patches with micrometer-scale projections for painless transdermal delivery.
  • Skin's rich immune cell population makes it an ideal target for immunotherapy and vaccine delivery via MNAs.
  • Conventional needle delivery often results in less efficient immune responses compared to MNA-based approaches.

Purpose of the Study:

  • To discuss the unique advantages of MNAs for immunotherapy and vaccine delivery.
  • To identify critical challenges hindering the widespread deployment of MNA technology.
  • To explore MNA design parameters for controlled release and applications in various preclinical models.

Main Methods:

  • Review of preclinical and clinical studies on microneedle array technology.
  • Analysis of MNA design parameters influencing drug release kinetics and immune targeting.
  • Examination of manufacturing, sterility, and cargo stability strategies for MNAs.

Main Results:

  • MNAs demonstrate potential for enhanced, more protective immune responses compared to conventional methods.
  • Logistical benefits include self-administration and reduced need for refrigeration.
  • Design strategies can optimize controlled release for vaccines and immunotherapies targeting infection, cancer, autoimmunity, and allergies.

Conclusions:

  • MNAs present significant advantages for immune engineering and clinical applications, including reduced off-target effects.
  • Overcoming manufacturing and sterility challenges is crucial for broader MNA adoption.
  • Emerging opportunities exist to exploit MNAs for advanced therapeutic and prophylactic interventions.