Identifying and targeting abnormal mitochondrial localization associated with psychoses
Haghighi, M.; McPhie, D.; Rohban, M.; Logan, D. J.; Haslum, J. F.; Ewald, J. D.; Karhohs, K. W.; Weisbart, E.; Cimini, B. A.; Singh, S.; Cohen, B. M.; Carpenter, A. E.
Show abstract
Therapeutics working by novel mechanisms are needed for patients with psychiatric conditions. Cell-based assays to identify candidates that reverse observed abnormalities could accelerate the process. Here, we imaged peripheral cells (skin fibroblasts) of 168 patients, stained for DNA, actin, and mitochondria. We found mitochondria tend to be farther from the cell border for patients who experience psychosis (including subsets of individuals with bipolar disorder, schizophrenia, and schizoaffective disorder). We observed a reverse trend, albeit not statistically significant, for patients diagnosed with major depression. Because the mitochondrial dispersion phenotype could be identified by a single metric, we were able to readily query existing databases of cells stained for their mitochondria and treated with various chemical or genetic perturbations. We identified compounds and genes both negatively and positively affecting the psychosis-associated phenotype, including some known to impact psychiatric conditions. Developing therapeutics with novel mechanisms is a complex multi-step challenge. This cell-based assay holds promise for virtual and physical screening to identify candidates for treating psychiatric conditions.
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