PIXUL-ChIP: integrated high-throughput sample preparation and analytical platform for epigenetic studies.

Area of Science:

• Molecular Biology
• Genomics
• Epigenetics

Background:

• Chromatin immunoprecipitation (ChIP) is crucial for identifying genome-associated proteins and modifications.
• Conventional ChIP protocols and even microplate-based assays face bottlenecks in sample preparation and chromatin fragmentation.
• Efficient chromatin fragmentation is essential for mapping genomic locations in ChIP assays.

Purpose of the Study:

• To develop a novel, high-throughput method for chromatin fragmentation and ChIP analysis.
• To integrate ultrasound technology with a microplate-based ChIP platform for improved efficiency.
• To overcome the sample preparation bottleneck in ChIP assays.

Main Methods:

• Developed PIXUL, an ultrasound transducer array for simultaneous shearing of samples in 96-well microplates.
• Integrated PIXUL with the Matrix ChIP platform, creating PIXUL-ChIP.
• Demonstrated PIXUL-prepared chromatin is compatible with existing ChIP-sequencing (ChIP-seq) workflows.

Main Results:

• PIXUL-ChIP enables fast, reproducible, low-cost, and high-throughput sample preparation and ChIP analysis.
• Up to 96 samples (cell culture or tissues) can be processed in a single day.
• The method is suitable for both ChIP-quantitative PCR (ChIP-qPCR) and ChIP-seq experiments.

Conclusions:

• PIXUL-ChIP significantly enhances throughput for ChIP assays, overcoming previous sample preparation limitations.
• This technology facilitates large-scale ChIP experiments, advancing the study of epigenetic processes in health and disease.
• PIXUL-ChIP can accelerate the screening of epigenetic drugs.