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Author:

Gong, Weikang (Gong, Weikang.) | Wee, JunJie (Wee, JunJie.) | Wu, Min-Chun (Wu, Min-Chun.) | Sun, Xiaohan (Sun, Xiaohan.) | Li, Chunhua (Li, Chunhua.) (Scholars:李春华) | Xia, Kelin (Xia, Kelin.)

Indexed by:

Scopus SCIE

Abstract:

The three-dimensional (3D) chromosomal structure plays an essential role in all DNA-templated processes, including gene transcription, DNA replication and other cellular processes. Although developing chromosome conformation capture (3C) methods, such as Hi-C, which can generate chromosomal contact data characterized genome-wide chromosomal structural properties, understanding 3D genomic nature-based on Hi-C data remains lacking. Here, we propose a persistent spectral simplicial complex (PerSpectSC) model to describe Hi-C data for the first time. Specifically, a filtration process is introduced to generate a series of nested simplicial complexes at different scales. For each of these simplicial complexes, its spectral information can be calculated from the corresponding Hodge Laplacian matrix. PerSpectSC model describes the persistence and variation of the spectral information of the nested simplicial complexes during the filtration process. Different from all previous models, our PerSpectSC-based features provide a quantitative global-scale characterization of chromosome structures and topology. Our descriptors can successfully classify cell types and also cellular differentiation stages for all the 24 types of chromosomes simultaneously. In particular, persistent minimum best characterizes cell types and Dim (1) persistent multiplicity best characterizes cellular differentiation. These results demonstrate the great potential of our PerSpectSC-based models in polymeric data analysis.

Keyword:

machine learning Hi-C data Hodge Laplacian persistent spectral simplicial complex chromosomal featurization

Author Community:

  • [ 1 ] [Xia, Kelin]Nanyang Technol Univ, Sch Phys & Math Sci, Div Math Sci, Singapore 63731, Singapore
  • [ 2 ] [Li, Chunhua]Beijing Univ Technol, Coll Life Sci & Chem, Fac Environm & Life Sci, Beijing 100124, Peoples R China
  • [ 3 ] [Gong, Weikang]Beijing Univ Technol, Fac Environm & Life Sci, Coll Life Sci & Chem, Beijing 100124, Peoples R China
  • [ 4 ] [Gong, Weikang]Nanyang Technol Univ, Sch Phys & Math Sci, Div Math Sci, Singapore 637371, Singapore

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Source :

BRIEFINGS IN BIOINFORMATICS

ISSN: 1467-5463

Year: 2022

Issue: 4

Volume: 23

9 . 5

JCR@2022

9 . 5 0 0

JCR@2022

ESI Discipline: COMPUTER SCIENCE;

ESI HC Threshold:46

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 5

SCOPUS Cited Count: 7

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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