Significant Role of Segmental Duplications and SIDD Sites in Chromosomal Translocations of Hematological Malignancies: A Multi-parametric Bioinformatic Analysis.
Interdiscip Sci
; 10(3): 467-475, 2018 Sep.
Article
in En
| MEDLINE
| ID: mdl-27896663
ABSTRACT
Recurrent non-random chromosomal translocations are hallmark characteristics of leukemogenesis, and however, molecular mechanisms underlying these rearrangements are less explored. The fundamental question is, why and how chromosomes break and reunite so precisely in the genome. Meticulous understanding of mechanism leading to chromosomal rearrangement can be achieved by characterizing breakpoints. To address this hypothesis, a novel multi-parametric computational approach for characterization of major leukemic translocations within and around breakpoint region was performed. To best of our knowledge, this bioinformatic analysis is unique in finding the presence of segmental duplications (SDs) flanking breakpoints of all major leukemic translocation. Breakpoint islands (BpIs) were analyzed for stress-induced duplex destabilization (SIDD) sites along with other complex genomic architecture and physicochemical properties. Our study distinctly emphasizes on the probable correlative role of SDs, SIDD sites and various genomic features in the occurrence of breakpoints. Further, it also highlights potential features which may be playing a crucial role in causing double-strand breaks, leading to translocation.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Translocation, Genetic
/
DNA Damage
/
Hematologic Neoplasms
/
Computational Biology
/
Chromosome Breakage
/
Segmental Duplications, Genomic
Limits:
Humans
Language:
En
Journal:
Interdiscip Sci
Journal subject:
BIOLOGIA
Year:
2018
Document type:
Article
Affiliation country:
India