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Unraveling the whole genome DNA methylation profile of zebrafish kidney marrow by Oxford Nanopore sequencing

  • Xudong Liu (Co-first Author)
  • , Ying Ni (Co-first Author)
  • , Dandan Wang
  • , Silin Ye
  • , Mengsu Yang
  • , Xuan Sun
  • , Anskar Yu Hung Leung*
  • , Runsheng Li*
  • *Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Abstract

Zebrafish is a widely used model organism for investigating human diseases, including hematopoietic disorders. However, a comprehensive methylation baseline for zebrafish primary hematopoietic organ, the kidney marrow (KM), is still lacking. We employed Oxford Nanopore Technologies (ONT) sequencing to profile DNA methylation in zebrafish KM by generating four KM datasets, with two groups based on the presence or absence of red blood cells. Our findings revealed that blood contamination in the KM samples reduced read quality and altered methylation patterns. Compared with whole-genome bisulfite sequencing (WGBS), the ONT-based methylation profiling can cover more CpG sites (92.4% vs 70%-80%), and exhibit less GC bias with more even genomic coverage. And the ONT methylation calling results showed a high correlation with WGBS results when using shared sites. This study establishes a comprehensive methylation profile for zebrafish KM, paving the way for further investigations into epigenetic regulation and the development of targeted therapies for hematopoietic disorders.

© The Author(s) 2023
Original languageEnglish
Pages (from-to)532
JournalScientific Data
Volume10
Online published10 Aug 2023
DOIs
Publication statusPublished - 2023

Bibliographical note

© 2023. Springer Nature Limited.

Funding

This work was supported by the Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) (SMSEGL20SC02), Early career scheme (project number 9048204) from the Hong Kong Research Grant Council, Hong Kong Health and Medical Research Fund (project number 9211280) and new Research Initiatives support from City University of Hong Kong (project number 9610497) to R.L, and was supported by Hetao Shenzhen-Hong Kong Science and Technology Innovation Cooperation Zone Shenzhen Park Project (HZQB-KCZYZ-2021017) and City University of Hong Kong (project number 9680217 and number 9678223) to M.Y; and was supported by Theme-based Research Scheme (T12-702/20-N), Technology Start-up Support Scheme for Universities (TSSSU/HKU/22/12/1), Incu-Bio Programme, HKSTP, and NSFC/RGC Joint Research Scheme (N_HKU745/21) to A.Y.H.L.

Research Keywords

  • Animals
  • CpG Islands
  • DNA Methylation
  • Epigenesis, Genetic
  • High-Throughput Nucleotide Sequencing/methods
  • Nanopore Sequencing
  • Sequence Analysis, DNA/methods
  • Zebrafish/genetics
  • Hematopoiesis/genetics

Publisher's Copyright Statement

  • This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

RGC Funding Information

  • RGC-funded

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