Journal
GENOMICS
Volume 114, Issue 5, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ygeno.2022.110477
Keywords
Spatial transcriptomics; Zebrafish; Muscle structure; Muscle growth
Funding
- JSPS KAKENHI
- China Scholarship Council
- [19KK0161]
- [20H00427]
- [202208050071]
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This study applied spatial transcriptomics to examine the muscle structure and growth characteristics of zebrafish myotomal muscle. The results revealed distinct regions with different gene expression patterns in adult muscles, which were similar to those found in larval muscles.
Fish exhibit different muscle structures and growth characteristics compared with mammals. We used a spatial transcriptomics approach and examined myotomal muscle sections from zebrafish. Adult muscles were divided into eight regions according to spatial gene expression characteristics. Slow muscle was located in the wedgeshaped region near the lateral line and at the base of the dorsal fin, intermediate muscle was located in a ribbon-shaped region adjacent to slow muscle, and fast muscle was located in the deep region of the trunk, surrounded by intermediate muscle; the interior of fast muscle was further divided into 6 parts by their transcriptomic features. Combined analysis of adult and larval data revealed that adult muscles contain specific regions similar to larval muscles. These regions showed active myogenesis and a high expression of genes associated with muscle hyperplasia. This is the first study to apply spatial transcriptomics to fish myotomal muscle structure and growth.
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