Preferential recruitment and stabilization of Myosin II at compartment boundaries in Drosophila
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
The regulation of mechanical tension exerted at cell junctions guides cell behavior during tissue formation and homeostasis. Cell junctions along compartment boundaries, which are lineage restrictions separating cells with different fates and functions within tissues, are characterized by increased mechanical tension compared to that of cell junctions in the bulk of the tissue. Mechanical tension depends on the actomyosin cytoskeleton; however, the mechanisms by which mechanical tension is locally increased at cell junctions along compartment boundaries remain elusive. Here, we show that non-muscle Myosin II and F-actin transiently accumulate and mechanical tension is increased at cell junctions along the forming anteroposterior compartment boundary in the Drosophila melanogaster pupal abdominal epidermis. Fluorescence recovery after photobleaching experiments showed that Myosin II accumulation correlated with its increased stabilization at these junctions. Moreover, photoconversion experiments indicated that Myosin II is preferentially recruited within cells to junctions along the compartment boundary. Our results indicate that the preferential recruitment and stabilization of Myosin II contribute to the initial buildup of mechanical tension at compartment boundaries.
Details
Original language | English |
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Article number | jcs260447 |
Journal | Journal of cell science |
Volume | 136 |
Issue number | 5 |
Early online date | 24 Feb 2023 |
Publication status | Published - Mar 2023 |
Peer-reviewed | Yes |
External IDs
PubMed | 36718636 |
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Keywords
Research priority areas of TU Dresden
DFG Classification of Subject Areas according to Review Boards
ASJC Scopus subject areas
Keywords
- Compartment boundary, Drosophila, Fluorescence recovery after photobleaching, Mechanical tension, Myosin II, Photoconversion