Study on salivary gland cytology by Fluorescence in situ hybridisation (FISH) (CAT#: STEM-MB-1188-WXH)

Introduction

Salivary gland cytology is challenging because it includes a diversity of lesions and a wide spectra of tumours. Salivary gland tumours are a large group of tumours that are highly diverse and heterogeneous.
Fluorescent in-situ hybridisation (FISH) can identify some molecular diagnostic signatures.

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Principle Applications Procedure Materials Notes Related Products

Principle

FISH uses fluorescent probes with complementary base sequences to locate the presence or absence of specific portions of DNA on chromosomes. The probe and target DNA must be denatured with heat or chemicals to break hydrogen bonds in the DNA and to allow hybridisation to occur once the two samples are mixed. The fluorescent probes form new hydrogen bonds with their complementary base pairs on the DNA, and these can then be detected via microscopy.

Applications

Detect and localize the presence or absence of specific DNA sequences on chromosomes.
Detect and localize specific RNA targets (mRNA, lncRNA and miRNA) in cells, circulating tumor cells, and tissue samples.

Procedure

1. Sample preparation
2. Co-denaturation and hybridization
3. Probe detection
4. Wash off of unbound probe
5. Analysis by flow cytometer/fluorescence microscopy

Materials

• Flow cytometer
• Fluorescence microscopy

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