Immunological perspectives on the pathogenesis, diagnosis, prevention and treatment of COVID-19

Yanghong Ni1,2, Aqu Alu1, Hong Lei1

  • 1Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 China.

Molecular Biomedicine
|November 12, 2021
PubMed

Insights

The immune system

Area of Science:

  • Immunology
  • Virology
  • Infectious Diseases

Background:

  • Coronavirus disease 2019 (COVID-19), caused by SARS-CoV-2, is a global pandemic with severe outcomes including multi-organ failure.
  • Current prevention and treatment strategies for COVID-19 are limited, posing a significant challenge to global health.
  • While the immune response is crucial for viral clearance, severe COVID-19 patients exhibit dysregulated immune responses like lymphopenia and cytokine release syndrome (CRS).

Purpose of the Study:

  • To understand the immunological characteristics of COVID-19 patients.
  • To explore how immunological insights can improve COVID-19 diagnosis, prognosis, and treatment.
  • To highlight the potential of immune-modulating strategies, including vaccines and immunotherapy, for managing SARS-CoV-2 infection.

Main Methods:

  • Review and analysis of immunological responses in COVID-19 patients.
  • Examination of immune dysregulation markers such as lymphopenia, lymphocyte exhaustion, and cytokine release syndrome (CRS).
  • Evaluation of potential therapeutic strategies targeting immune modulation.

Main Results:

  • Severe COVID-19 is associated with significant immune dysregulation, including lymphopenia and exacerbated immune responses.
  • Understanding these immunological characteristics is key to developing effective diagnostic and prognostic tools.
  • Immune-modulating strategies show promise in managing SARS-CoV-2 infection.

Conclusions:

  • Dysregulated immune responses in severe COVID-19 necessitate a deeper understanding for improved patient management.
  • Targeting immune modulation through vaccines or immunotherapy offers a promising avenue for combating the SARS-CoV-2 pandemic.
  • Further research into COVID-19 immunology is vital for developing novel therapeutic interventions.

Related Concept Videos

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...
1.1K
Asthma: Pathogenesis and Management01:20

Asthma: Pathogenesis and Management

Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
821
Immunodeficiency Diseases01:25

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency...
1.3K
Development of Immunocompetence01:22

Development of Immunocompetence

The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
511
Cytotoxic T Cells-mediated Immune Response01:27

Cytotoxic T Cells-mediated Immune Response

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...
4.3K
Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

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.
478