Determination of complete chromosomal haplotypes by bulk DNA sequencing

Area of Science:

• Genomics
• Computational Biology
• Molecular Genetics

Background:

• Haplotype phase, the arrangement of genetic variations on homologous chromosomes, is crucial for understanding non-haploid genomes.
• Accurate haplotype determination is essential for genetic studies, disease research, and understanding genome structure.

Purpose of the Study:

• To develop and validate a computational strategy for determining complete whole-chromosome haplotypes.
• To enable high-precision and high-completeness haplotype resolution in diploid genomes.
• To assemble the syntenic structure of rearranged chromosomes in aneuploid cancer genomes.

Main Methods:

• Utilizing a combination of bulk long-range sequencing and Hi-C sequencing.
• Developing a computational strategy for integrating data from both sequencing methods.
• Applying the strategy to diploid human genomes and aneuploid cancer genomes.

Main Results:

• Achieved high precision (>99%) and completeness (>98%) in resolving parental chromosome haplotypes in diploid human genomes.
• Successfully assembled the syntenic structure of rearranged chromosomes in aneuploid cancer genomes at base pair resolution.
• Demonstrated the capability to interrogate chromosome-specific alterations and chromatin reorganization.

Conclusions:

• The developed computational strategy reliably determines complete whole-chromosome haplotypes.
• This approach offers a powerful tool for analyzing genetic variation and structural rearrangements in both normal and diseased genomes.
• Enables direct interrogation of chromosome-specific alterations and chromatin reorganization using bulk DNA sequencing.