title: HistoMosaic Detecting KRAS G12V Mutation Across Colorectal Cancer Tissue Slices through in Situ PCR.
abstract: We report on HistoMosaic, a novel technique for genetic analysis of formalin-fixed, paraffin-embedded tissue slices. It combines microfluidic compartmentalization, in situ allele-specific PCR, and fluorescence microscopy. The experimental proof of principle was achieved by in situ detection of KRAS G12V mutation in colorectal cancer tissues and is presented herein. HistoMosaic offers the ability to detect mutations over the entire tissue slide simultaneously, rapidly, economically, and without selection bias, while coregistering the genetic information with the preserved morphological information. Thus, HistoMosaic has wide applicability in basic science as a tool to map genetic heterogeneity. It is also a platform to build companion diagnostics for targeted therapies in oncology, to help ensure that the right drug is given to the right patient, thereby saving healthcare resources and improving patient outcomes.
authors.affiliation: Department of Pathology, Keck School of Medicine of the University of Southern California , 2011 Zonal Avenue, Los Angeles, California 90089, United States.
authors.forename: Christopher B
authors.initials: CB
authors.lastname: Raub
authors.affiliation: Department of Pathology, Keck School of Medicine of the University of Southern California , 2011 Zonal Avenue, Los Angeles, California 90089, United States.
authors.forename: Chen-Chung
authors.initials: CC
authors.lastname: Lee
authors.affiliation: Department of Pathology, Keck School of Medicine of the University of Southern California , 2011 Zonal Avenue, Los Angeles, California 90089, United States.
authors.forename: Darryl
authors.initials: D
authors.lastname: Shibata
authors.affiliation: Department of Pathology, Keck School of Medicine of the University of Southern California , 2011 Zonal Avenue, Los Angeles, California 90089, United States.
authors.forename: Clive
authors.initials: C
authors.lastname: Taylor
authors.affiliation: Department of Pathology, Keck School of Medicine of the University of Southern California , 2011 Zonal Avenue, Los Angeles, California 90089, United States.
authors.forename: Emil
authors.initials: E
authors.lastname: Kartalov
mesh_terms: D015179:Colorectal Neoplasms / Q000473:pathology*; D011905:Genes, ras; D006801:Humans; D018613:Microscopy, Confocal; D009154:Mutation; D016133:Polymerase Chain Reaction / Q000379:methods*
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