Journal of Clinical Immunology

, Volume 30, Issue 3, pp 339–346

MicroRNA in the Adaptive Immune System, in Sickness and in Health




MicroRNA are emerging as key regulators of the development and function of adaptive immunity. These 19–24 nucleotide regulatory RNA molecules have essential roles in multiple faucets of adaptive immunity, from regulating the development of the key cellular players to the activation and function in immune responses.


MicroRNA are involved in T cell and B cell differentiation in the thymus and bone marrow, and subsequent peripheral homeostasis. The contribution of specific microRNA to the adaptive immune response becomes even more apparent during the effector phases: class switching and germinal centre formation in B cells, differentiation into functional lineages in T cells, and activation of antigen-presentation cells through pattern-recognition pathways. With the capacity of microRNA to alter the survival and death of T and B cells, control over microRNA expression is essential to prevent adaptive immune cells from unregulated proliferation. MicroRNA can act both as ‘oncomirs’ and tumour suppressors, and thus dysregulation of microRNA in lymphocytes can cause malignancies.


In this review, we will describe the role of microRNA in generating a productive adaptive response, and the consequences if microRNA-mediated repression of lymphocytes is perturbed.


MicroRNA B cells regulatory T cells T cells dendritic cells cancer 

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.VIB and University of LeuvenLeuvenBelgium
  2. 2.Cambridge Institute for Medical ResearchUniversity of CambridgeCambridgeUK
  3. 3.Memorial Sloan-Kettering Cancer CenterNew YorkUSA

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