Bibliographic Details
| Title: |
Human skeletal muscle fiber heterogeneity beyond myosin heavy chains |
| Authors: |
Roger Moreno-Justicia, Thibaux Van der Stede, Ben Stocks, Jenni Laitila, Robert A. Seaborne, Alexia Van de Loock, Eline Lievens, Diana Samodova, Leyre Marín-Arraiza, Oksana Dmytriyeva, Robin Browaeys, Kim Van Vossel, Lukas Moesgaard, Nurten Yigit, Jasper Anckaert, Anneleen Weyns, Ruud Van Thienen, Ronni E. Sahl, Edmar Zanoteli, Michael W. Lawlor, Michael Wierer, Pieter Mestdagh, Jo Vandesompele, Julien Ochala, Morten Hostrup, Wim Derave, Atul S. Deshmukh |
| Source: |
Nature Communications, Vol 16, Iss 1, Pp 1-18 (2025) |
| Publisher Information: |
Nature Portfolio, 2025. |
| Publication Year: |
2025 |
| Collection: |
LCC:Science |
| Subject Terms: |
Science |
| More Details: |
Abstract Skeletal muscle is a heterogenous tissue comprised primarily of myofibers, commonly classified into three fiber types in humans: one “slow” (type 1) and two “fast” (type 2A and type 2X). However, heterogeneity between and within traditional fiber types remains underexplored. We applied transcriptomic and proteomic workflows to 1050 and 1038 single myofibers from human vastus lateralis, respectively. Proteomics was conducted in males, while transcriptomics included ten males and two females. We identify metabolic, ribosomal, and cell junction proteins, in addition to myosin heavy chain isoforms, as sources of multi-dimensional variation between myofibers. Furthermore, whilst slow and fast fiber clusters are identified, our data suggests that type 2X fibers are not phenotypically distinct to other fast fibers. Moreover, myosin heavy chain-based classifications do not adequately describe the phenotype of myofibers in nemaline myopathy. Overall, our data indicates that myofiber heterogeneity is multi-dimensional with sources of variation beyond myosin heavy chain isoforms. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2041-1723 |
| Relation: |
https://doaj.org/toc/2041-1723 |
| DOI: |
10.1038/s41467-025-56896-6 |
| Access URL: |
https://doaj.org/article/11b7769c84094140ae8d2cbc1b31d098 |
| Accession Number: |
edsdoj.11b7769c84094140ae8d2cbc1b31d098 |
| Database: |
Directory of Open Access Journals |
