A multiscale chemical-mechanical model predicts impact of morphogen spreading on tissue growth.
Journal
NPJ systems biology and applications
ISSN: 2056-7189
Titre abrégé: NPJ Syst Biol Appl
Pays: England
ID NLM: 101677786
Informations de publication
Date de publication:
20 05 2023
20 05 2023
Historique:
received:
05
10
2022
accepted:
03
05
2023
medline:
22
5
2023
pubmed:
21
5
2023
entrez:
20
5
2023
Statut:
epublish
Résumé
The exact mechanism controlling cell growth remains a grand challenge in developmental biology and regenerative medicine. The Drosophila wing disc tissue serves as an ideal biological model to study mechanisms involved in growth regulation. Most existing computational models for studying tissue growth focus specifically on either chemical signals or mechanical forces. Here we developed a multiscale chemical-mechanical model to investigate the growth regulation mechanism based on the dynamics of a morphogen gradient. By comparing the spatial distribution of dividing cells and the overall tissue shape obtained in model simulations with experimental data of the wing disc, it is shown that the size of the domain of the Dpp morphogen is critical in determining tissue size and shape. A larger tissue size with a faster growth rate and more symmetric shape can be achieved if the Dpp gradient spreads in a larger domain. Together with Dpp absorbance at the peripheral zone, the feedback regulation that downregulates Dpp receptors on the cell membrane allows for further spreading of the morphogen away from its source region, resulting in prolonged tissue growth at a more spatially homogeneous growth rate.
Identifiants
pubmed: 37210381
doi: 10.1038/s41540-023-00278-5
pii: 10.1038/s41540-023-00278-5
pmc: PMC10199952
doi:
Substances chimiques
Drosophila Proteins
0
dpp protein, Drosophila
0
Types de publication
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
16Informations de copyright
© 2023. The Author(s).
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