title: Preparation of Cells from Formalin-Fixed, Paraffin-Embedded Tissue for Use in Fluorescence In Situ Hybridization (FISH) Experiments.
abstract: Numerical and structural chromosome abnormalities can be accurately detected in cells from archived tissues using fluorescence in situ hybridization (FISH). This unit describes two common approaches to performing FISH in formalin-fixed, paraffin-embedded tissue. The first approach utilizes 4 to 6 μm tissue sections in cases for which preserving tissue morphology is necessary, and the second involves extraction of intact nuclei from 50-μm tissue sections. To interpret FISH results using 4 to 6 μm sections, an adequate number of nuclei must be evaluated to perform statistical analysis. Evaluation of 30 to 50 nuclei from the single-cell suspension generally gives an interpretable result.
authors.affiliation: CAMD-Cytogenetics, Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts.
authors.forename: Stanislawa
authors.initials: S
authors.lastname: Weremowicz
mesh_terms: D002458:Cell Fractionation / Q000295:instrumentation / Q000379:methods; D002467:Cell Nucleus / Q000737:chemistry / Q000648:ultrastructure; D002469:Cell Separation / Q000295:instrumentation / Q000379:methods*; D002869:Chromosome Aberrations; D015342:DNA Probes / Q000138:chemical synthesis; D005404:Fixatives; D005557:Formaldehyde; D006801:Humans; D017404:In Situ Hybridization, Fluorescence / Q000295:instrumentation / Q000379:methods*; D008867:Microtomy / Q000295:instrumentation / Q000379:methods; D016612:Paraffin Embedding / Q000295:instrumentation / Q000379:methods*; D059010:Single-Cell Analysis / Q000295:instrumentation / Q000379:methods; D016707:Tissue Fixation / Q000379:methods*
chemical_list: D015342:DNA Probes; D005404:Fixatives; D005557:Formaldehyde
keywords: FISH; archived tissue; interphase cytogenetics