Signature MicroRNA expression patterns identified in humans with 22q11.2 deletion/DiGeorge syndrome

M. Teresa De la Morena, Jennifer L. Eitson, Igor M. Dozmorov, Serkan Belkaya, Ashley R. Hoover, Esperanza Anguiano, M. Virginia Pascual, Nicolai S C van Oers

Research output: Contribution to journalArticle

38 Scopus citations

Abstract

Patients with 22q11.2 deletion syndrome have heterogeneous clinical presentations including immunodeficiency, cardiac anomalies, and hypocalcemia. The syndrome arises from hemizygous deletions of up to 3. Mb on chromosome 22q11.2, a region that contains 60 genes and 4 microRNAs. MicroRNAs are important post-transcriptional regulators of gene expression, with mutations in several microRNAs causal to specific human diseases. We characterized the microRNA expression patterns in the peripheral blood of patients with 22q11.2 deletion syndrome (n = 31) compared to normal controls (n = 22). Eighteen microRNAs had a statistically significant differential expression (p. <0.05), with miR-185 expressed at 0.4. × normal levels. The 22q11.2 deletion syndrome cohort exhibited microRNA expression hyper-variability and group dysregulation. Selected microRNAs distinguished patients with cardiac anomalies, hypocalcemia, and/or low circulating T cell counts. In summary, microRNA profiling of chromosome 22q11.2 deletion syndrome/DiGeorge patients revealed a signature microRNA expression pattern distinct from normal controls with clinical relevance.

Original languageEnglish (US)
Pages (from-to)11-22
Number of pages12
JournalClinical Immunology
Volume147
Issue number1
DOIs
StatePublished - Apr 1 2013

Keywords

  • 22q11.2 deletion syndrome
  • DiGeorge syndrome
  • MiR-185
  • MicroRNA profiling
  • Primary immunodeficiency disease

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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