A link between genetic disorders and cellular impairment, using human induced pluripotent stem cells to reveal the functional consequences of copy number variations in the central nervous system—a close look at chromosome 15

Alessia Casamassa, Daniela Ferrari, Maurizio Gelati, Massimo Carella, Angelo Luigi Vescovi, Jessica Rosati

Research output: Contribution to journalReview article

Abstract

Recent cutting-edge human genetics technology has allowed us to identify copy number variations (CNVs) and has provided new insights for understanding causative mechanisms of human diseases. A growing number of studies show that CNVs could be associated with physiological mechanisms linked to evolutionary trigger, as well as to the pathogenesis of various diseases, including cancer, autoimmune disease and mental disorders such as autism spectrum disorders, schizophrenia, intellectual disabilities or attention-deficit/hyperactivity disorder. Their incomplete penetrance and variable expressivity make diagnosis difficult and hinder comprehension of the mechanistic bases of these disorders. Additional elements such as co-presence of other CNVs, genomic background and environmental factors are involved in determining the final phenotype associated with a CNV. Genetically engineered animal models are helpful tools for understanding the behavioral consequences of CNVs. However, the genetic background and the biology of these animal model systems have sometimes led to confusing results. New cellular models obtained through somatic cellular reprogramming technology that produce induced pluripotent stem cells (iPSCs) from human subjects are being used to explore the mechanisms involved in the pathogenic consequences of CNVs. Considering the vast quantity of CNVs found in the human genome, we intend to focus on reviewing the current literature on the use of iPSCs carrying CNVs on chromosome 15, highlighting advantages and limits of this system with respect to mouse model systems.

Original languageEnglish (US)
Article number1860
JournalInternational journal of molecular sciences
Volume21
Issue number5
DOIs
StatePublished - Mar 1 2020

Keywords

  • 15q iPSCs
  • 15q mice
  • Copy Number Variation (CNV)
  • Induced pluripotent stem cells (iPSCs)
  • Neurodevelopmental diseases
  • Neuropsychiatric diseases

ASJC Scopus subject areas

  • Catalysis
  • Molecular Biology
  • Spectroscopy
  • Computer Science Applications
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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