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Selected Publication:
SHR Neuro Cancer Cardio Lipid Metab Microb
Loibner, M; Oberauner-Wappis, L; Viertler, C; Groelz, D; Zatloukal, K.
Protocol for HER2 FISH Using a Non-cross-linking, Formalin-free Tissue Fixative to Combine Advantages of Cryo-preservation and Formalin Fixation.
J Vis Exp. 2017; 8(130):
Doi: 10.3791/55885
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- Leading authors Med Uni Graz
- Loibner Martina
- Zatloukal Kurt
- Co-authors Med Uni Graz
- Oberauner-Wappis Lisa
- Viertler Christian
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- Abstract:
- Morphologic assessment of formalin-fixed, paraffin-embedded (FFPE) tissue samples has been the gold standard for cancer diagnostics for decades due to its excellent preservation of morphology. Personalized medicine increasingly provides individually adapted and targeted therapies for characterized individual diseases enabled by combined morphological and molecular analytical technologies and diagnostics. Performance of morphologic and molecular assays from the same FFPE specimen is challenging because of the negative impact of formalin due to chemical modification and cross-linking of nucleic acids and proteins. A non-cross-linking, formalin-free tissue fixative has been recently developed to fulfil both requirements, i.e., to preserve morphology like FFPE and biomolecules like cryo-preservation. Since FISH is often required in combination with histopathology and molecular diagnostics, we tested the applicability of FISH protocols on tissues treated with this new fixative. We found that formalin post-fixation of histological sections of non-cross-linking, formalin-free and paraffin-embedded (NCFPE) breast cancer tissue generated equivalent results to those with FFPE tissue in human epidermal growth factor receptor 2 (HER2) FISH analysis. This protocol describes how a FISH assay originally developed and validated for FFPE tissue can be used for NCFPE tissues by a simple post-fixation step of histological sections.
- Find related publications in this database (using NLM MeSH Indexing)
- Breast Neoplasms - diagnosis
- Breast Neoplasms - diagnostic imaging
- Breast Neoplasms - enzymology
- Breast Neoplasms - genetics
- Cryopreservation - methods
- Female -
- Humans -
- In Situ Hybridization, Fluorescence - methods
- Pathology, Molecular - methods
- Receptor, ErbB-2 - genetics
- Tissue Fixation - methods
- Find related publications in this database (Keywords)
- Cancer Research
- Breast cancer
- non-cross-linking formalin-free tissue fixative
- formalin
- pre-analytics
- HER2 FISH analysis
- molecular diagnostics