RRC ID 59400
著者 Priti A, Ong HT, Toyama Y, Padmanabhan A, Dasgupta S, Krajnc M, Zaidel-Bar R.
タイトル Syncytial germline architecture is actively maintained by contraction of an internal actomyosin corset.
ジャーナル Nat Commun
Abstract Syncytial architecture is an evolutionarily-conserved feature of the germline of many species and plays a crucial role in their fertility. However, the mechanism supporting syncytial organization is largely unknown. Here, we identify a corset-like actomyosin structure within the syncytial germline of Caenorhabditis elegans, surrounding the common rachis. Using laser microsurgery, we demonstrate that actomyosin contractility within this structure generates tension both in the plane of the rachis surface and perpendicular to it, opposing membrane tension. Genetic and pharmacological perturbations, as well as mathematical modeling, reveal a balance of forces within the gonad and show how changing the tension within the actomyosin corset impinges on syncytial germline structure, leading, in extreme cases, to sterility. Thus, our work highlights a unique tissue-level cytoskeletal structure, and explains the critical role of actomyosin contractility in the preservation of a functional germline.
巻・号 9(1)
ページ 4694
公開日 2018-11-8
DOI 10.1038/s41467-018-07149-2
PII 10.1038/s41467-018-07149-2
PMID 30410005
PMC PMC6224597
MeSH Actomyosin / metabolism* Animals Caenorhabditis elegans / metabolism Caenorhabditis elegans Proteins / metabolism Cytoplasmic Streaming Germ Cells / metabolism* Giant Cells / metabolism* Gonads / metabolism Models, Biological Myosins / metabolism
IF 11.878
引用数 5
リソース情報
線虫 tm4255