Epigenetic identification and targeting in clinical FFPE tissues is a crucial step for potential epigenetic therapeutics and personalized medicine therapies. FFPE is a standard method to archive and preserve medical tissue biopsy samples. These archives, kept in many hospitals world-wide, are a huge, rich and untapped sample resource for genetic research. Due to the cross-linking of proteins by formaldehyde, FFPE tissues present a particular challenge for ChIP analysis. In addition, the small size and delicate nature of the tissue, and the difficulty in extracting samples from paraffin, used to provide tissue support after preservation, can damage complex cellular complexes such as chromatin. ChIP assays from these samples have therefore proved time consuming and difficult.
Chromatrap® FFPE ChIP kit overcomes these issues and provides the following benefits: