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After the fates of the vulval cells have been determined by the combined action of the EGFR/RAS/MAPK and Delta/Notch signaling pathways, the vulval cells proliferate, undergo shape changes and spatially rearrange to form a tubular organ consisting of 22 cells. We are investigating how the EGFR/RAS/MAPK and Notch pathways control actomyosin-mediated apical and lateral cell constrictions to initiate lumen formation and shape the organ. The insights gained from our studies on vulval morphogenesis uncover the principle mechanisms governing organ development and can be applied to understand the formation of more complex organs in higher animals.
Key publications
Yang Q, Roiz D, Mereu L, Daube M, Hajnal A.
Dev Cell. 2017 Aug 7;42(3):271-285.e3.
doi: 10.1016/j.devcel.2017.07.008.
Farooqui S, Pellegrino MW, Rimann I, Morf MK, Müller L, Fröhli E, Hajnal A.
Dev Cell. 2012 Sep 11;23(3):494-506.
doi: 10.1016/j.devcel.2012.06.019.
PMID: 22975323 Free Article
Pellegrino MW, Farooqui S, Fröhli E, Rehrauer H, Kaeser-Pebernard S, Müller F, Gasser RB, Hajnal A.
Development. 2011 Nov;138(21):4649-60.
doi: 10.1242/dev.071951.
Pellegrino MW, Gasser RB, Sprenger F, Stetak A, Hajnal A.
Biol Dev 1;336(1):84-93.
doi: 10.1016/j.ydbio.2009.09.036.
Epub 2009 Sep 30.
PMID: 19799893 Free Article