Notch signaling generates the 'cut here line' on the cuticle of the puparium in Drosophila melanogaster

Autor: Reiko Tajiri, Ayaka Hirano, Yu-ya Kaibara, Daiki Tezuka, Zhengyang Chen, Tetsuya Kojima
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: iScience, Vol 26, Iss 8, Pp 107279- (2023)
Druh dokumentu: article
ISSN: 2589-0042
DOI: 10.1016/j.isci.2023.107279
Popis: Summary: During a molt or eclosion, insects shed their cuticle, an extracellular matrix made by underlying epidermal cells, by cleavage along a defined line. This means that the “cut here line” is pre-formed on the cuticle, and its formation is indispensable for insect life. Here, we show that the proper formation of the operculum ridge (OR), which is the “cut here line” on the puparium (pupal case) of Drosophila melanogaster, involves Notch signaling activation in the epidermal cells just beneath the future OR region (OR-forming cells). The inhibition of Notch signaling causes defects in eclosion due to failure in OR cleavage, the chitin organization and several cuticular proteins localization, glucose dehydrogenase (Gld) activity, and OR-forming cell shape. Our findings provide the first insight into the molecular basis of the structure and formation of the “cut here line” on the cuticle.
Databáze: Directory of Open Access Journals