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Human innate B cells: a link between host defense and autoimmunity?
Eric C B Milner1, Jennifer Anolik, Amedeo Cappione
1Department of Medicine, Clinical Immunology and Rheumatology Unit, University of Rochester Medical School, 601 Elmwood Avenue, Box 695, Rochester, NY 14642, USA.
Springer Seminars in Immunopathology
|January 6, 2005
Summary
B cells regulate immunity via antigen presentation and cytokine release. Autoreactive B cells are crucial for innate immunity but can cause systemic lupus erythematosus in adaptive responses.
Area of Science:
- Immunology
- Cell Biology
Background:
- B cells are key immune regulators, influencing responses through antigen presentation and cytokine/chemokine production.
- Innate immune activation of B cells offers protective benefits, including antibody generation and immune memory.
- Autoreactive B cells have a dual role, contributing to innate immunity but potentially driving autoimmune diseases.
Purpose of the Study:
- To review human B cell populations and their functional properties.
- To highlight the specific role of inherently autoreactive B cells in immunity.
- To elucidate the pathogenic potential of autoreactive B cells in systemic lupus erythematosus.
Main Methods:
- Literature review of human B cell populations.
- Analysis of B cell functional properties, including cytokine and chemokine production.
- Examination of the role of autoreactive B cells in innate and adaptive immunity.
Main Results:
- B cells exhibit diverse immunoregulatory functions.
- Innate B cell activation promotes beneficial immune responses.
- Inherently autoreactive B cells are physiologically important in innate immunity.
- These cells can become pathogenic in systemic lupus erythematosus when part of adaptive responses.
Conclusions:
- Human B cells possess multifaceted immunoregulatory capabilities.
- Autoreactive B cells are essential for innate immune homeostasis.
- Dysregulation of autoreactive B cells can lead to autoimmune pathology, such as lupus.