Divergent Levels of Marker Chromosomes in an hiPSC-Based Model of Psychosis

Stem Cell Reports. 2017 Mar 14;8(3):519-528. doi: 10.1016/j.stemcr.2017.01.010. Epub 2017 Feb 16.

Abstract

In the process of generating presumably clonal human induced pluripotent stem cells (hiPSCs) from two carriers of a complex structural rearrangement, each having a psychotic disorder, we also serendipitously generated isogenic non-carrier control hiPSCs, finding that the rearrangement occurs as an extrachromosomal marker (mar) element. All confirmed carrier hiPSCs and differentiated neural progenitor cell lines were found to be mosaic. We caution that mar elements may be difficult to functionally evaluate in hiPSC cultures using currently available methods, as it is difficult to distinguish cells with and without mar elements in live mosaic cultures.

Keywords: 9p24.1; bipolar disorder; human induced pluripotent stem cell; isogenic; marker chromosome; mosaic; neural progenitor cell; schizophrenia.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, N.I.H., Extramural

MeSH terms

  • Chromosome Duplication
  • Chromosomes, Human*
  • Chromosomes, Human, Pair 9
  • Comparative Genomic Hybridization
  • Genetic Association Studies
  • Genetic Markers*
  • Genetic Predisposition to Disease
  • Heterozygote
  • Humans
  • Induced Pluripotent Stem Cells / metabolism*
  • Matrix Attachment Regions / genetics
  • Mosaicism
  • Psychotic Disorders / genetics*
  • Trisomy

Substances

  • Genetic Markers

Supplementary concepts

  • Chromosome 9, trisomy