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Imaging the Human Immunological Synapse
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Advances in basic and clinical immunology in 2014.

Javier Chinen1, Luigi D Notarangelo2, William T Shearer1

  • 1Immunology, Allergy and Rheumatology Section, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, Tex.

The Journal of Allergy and Clinical Immunology
|May 10, 2015
PubMed
Summary

Whole-exome sequencing accelerates genetic identification of immunodeficiency syndromes, revealing new gene defects like PGM3 and CTPS1. Advances in newborn screening and treatments like gene therapy improve outcomes for primary immunodeficiencies and HIV.

Keywords:
HIV1Immunologycommon variable immunodeficiencydedicator of cytokinesis 8intravenous immunoglobulinnewborn screeningprimary immunodeficiencyrecombination-activating gene 1severe combined immunodeficiency

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Area of Science:

  • Genetics
  • Immunology
  • Molecular Biology

Background:

  • Whole-exome sequencing (WES) has revolutionized the genetic diagnosis of primary immunodeficiency (PID) syndromes.
  • WES complements traditional methods like linkage analysis and homozygosity mapping for PID gene discovery.

Observation:

  • Several novel genes, including PGM3, CTPS1, NIK, CTLA4, BCL10, PIK3R1, IL21, and JAGN1, have been identified as causative for immunodeficiencies.
  • Clinical phenotypes associated with known gene defects continue to expand, with examples like recombination-activating gene 1 variants.
  • Research is exploring B-cell tolerance mechanisms in PIDs to understand autoimmunity and inflammation.

Findings:

  • New gene discoveries expedite PID diagnosis and expand the known genetic basis of immune dysregulation.
  • Studies highlight the roles of IL-12 and IL-15 in enhancing natural killer cell function.
  • Newborn screening for T-cell deficiencies is increasing, aiding early diagnosis and treatment of severe combined immunodeficiency (SCID).

Implications:

  • Advances in genetic diagnostics and understanding of immune regulation pave the way for targeted therapies.
  • Successful hematopoietic stem cell transplantation and gene therapy offer curative options for severe immunodeficiencies.
  • Ongoing research in HIV focuses on vaccine development and eradicating latent viral reservoirs.