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Detection of chromosomal aberrations by Spectral Karyotype (SKY) Technique (CAT#: STEM-ST-0373-WXH)

Introduction

A chromosomal abnormality, or chromosomal aberration, is a disorder characterized by a morphological or numerical alteration in single or multiple chromosomes, affecting autosomes, sex chromosomes, or both.




Principle

It is based on the hybridization of collections of chromosome-specific FISH probes labeled with different fluorochromes or fluorochrome combinations, allowing the discrimination of each of the 24 different human chromosomes.

Applications

Detection of subtle chromosomal aberrations, including marker chromosomes, small translocations, complex rearrangements and minute structural abnormalities.

Procedure

1. Metaphase preparation
2. Slide pretreatment
3. Slide and probe denaturation
4. Hybridization
5. Detection
6. Image acquisition and image analysis

Materials

Fluorescent dyes, spectrum orange, Texas red, Cy5, spectrum green, Cy5