RT Journal Article
SR Electronic
T1 Transcriptional signatures of schizophrenia in hiPSC-derived NPCs and neurons are concordant with signatures from post mortem adult brains
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 185546
DO 10.1101/185546
A1 Gabriel E. Hoffman
A1 Brigham J. Hartley
A1 Erin Flaherty
A1 Ian Ladran
A1 Peter Gochman
A1 Doug Ruderfer
A1 Eli A. Stahl
A1 Judith Rapoport
A1 Pamela Sklar
A1 Kristen J. Brennand
YR 2017
UL http://biorxiv.org/content/early/2017/09/07/185546.abstract
AB Whereas highly penetrant variants have proven well-suited to human induced pluripotent stem cell (hiPSC)-based models, the power of hiPSC-based studies to resolve the much smaller effects of common variants within the size of cohorts that can be realistically assembled remains uncertain. In developing a large case/control schizophrenia (SZ) hiPSC-derived cohort of neural progenitor cells and neurons, we identified and accounted for a variety of technical and biological sources of variation. Reducing the stochastic effects of the differentiation process by correcting for cell type composition boosted the SZ signal in hiPSC-based models and increased the concordance with post mortem datasets. Because this concordance was strongest in hiPSC-neurons, it suggests that this cell type may better model genetic risk for SZ. We predict a growing convergence between hiPSC and post mortem studies as both approaches expand to larger cohort sizes. For studies of complex genetic disorders, to maximize the power of hiPSC cohorts currently feasible, in most cases and whenever possible, we recommend expanding the number of individuals even at the expense of the number of replicate hiPSC clones.