MicroRNA regulation of B cell receptor signaling
Timothy C Borbet1, Marcus J Hines1, Sergei B Koralov1
1Department of Pathology, New York University School of Medicine, New York, New York, USA.
Insights
MicroRNAs (miRNAs) regulate B cell receptor (BCR) signaling, impacting B lymphocyte development and function. These small RNAs are crucial for preventing autoimmunity by controlling B cell responses.
Area of Science:
- Immunology
- Molecular Biology
- Genetics
Background:
- B lymphocytes are key immune cells regulated by B cell receptor (BCR) signaling.
- BCR signaling controls B cell survival, proliferation, differentiation, and prevention of autoimmunity.
- MicroRNAs (miRNAs) are non-coding RNAs regulating gene expression and cell fate.
Purpose of the Study:
- To review the role of miRNAs in regulating BCR signaling during B lymphocyte development and function.
- To highlight recent studies on miRNA involvement in early B cell development and peripheral responses.
- To examine how miRNAs control BCR signaling to prevent aberrant activation and autoimmunity.
Main Methods:
- Literature review of recent studies on miRNAs and BCR signaling.
- Analysis of miRNA-mediated post-transcriptional regulation in B cells.
- Focus on miRNA impact on B cell development and immune response.
Main Results:
- miRNAs are critical regulators of B cell development in bone marrow and peripheral systems.
- miRNAs modulate BCR signaling pathways, influencing B cell fate decisions.
- Dysregulation of miRNAs can contribute to aberrant B cell activation and autoimmunity.
Conclusions:
- miRNAs play a vital role in orchestrating B cell development and function through BCR signaling.
- Understanding miRNA regulation of BCR signaling is essential for preventing autoimmune diseases.
- miRNAs offer potential therapeutic targets for modulating B cell responses.
Abstract:
B lymphocytes play a central role in host immune defense. B cell receptor (BCR) signaling regulates survival, proliferation, and differentiation of B lymphocytes. Signaling through the BCR signalosome is a multi-component cascade that is tightly regulated and is important in the coordination of B cell differentiation and function. At different stages of development, B cells that have BCRs recognizing self are eliminated to prevent autoimmunity. microRNAs (miRNAs) are small single-stranded non-coding RNAs that contribute to post-transcriptional regulation of gene expression and have been shown to orchestrate cell fate decisions through the regulation of lineage-specific transcriptional profiles. Studies have identified miRNAs to be crucial for B cell development in the bone marrow and their subsequent population of the peripheral immune system. In this review, we focus on the role of miRNAs in the regulation of BCR signaling as it pertains to B lymphocyte development and function. In particular, we discuss the most recent studies describing the role of miRNAs in the regulation of both early B cell development and peripheral B cell responses and examine the ways by which miRNAs regulate signal downstream of B cell antigen receptor to prevent aberrant activation and autoimmunity.
Related Concept Videos
01:15Receptor Downregulation in MVBs
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR...
01:22MicroRNAs
01:28Diversity of Antigen Receptors
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
01:24B Cell Activation and Differentiation
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
01:29Translational Regulation
02:26NF-κB-dependent Signaling Pathway
NF-κB-dependent Signaling Mechanism
The...