We propose to combine computational and experimental approaches to investigate the mechanisms of epithelial morphogenesis, defined as the set of processes that transform sheets of cells into three-dimensional (3d) structures of tissues and organs. Studies of epithelial morphogenesis are important for understanding of normal development and for elucidating the origins of developmental abnormalities, such as neural tube defects. We will focus on a type of epithelial morphogenesis that involves only cell shape changes and rearrangements and does not depend on cell divisions or death. Among the examples of this type of morphogenesis are the early stages of heart development in fish, the formation of optic cups in birds, and mesoderm invagination in insects. In our experimental system (Drosophila oogenesis), a sheet of nondividing cells gives rise to an elaborate 3d shape. This transformation is induced by well-understood chemical signals, which specify a fate map, a correspondence between positions of cells within the sheet and their ultimate positions within the 3d structure. Our goal is to understand how the two-dimensional (2d) fate map is transformed into a 3d structure. Answering this question is important in multiple developmental systems, from simple metazoans to humans. Our hypothesis is that 3d epithelial morphogenesis during Drosophila oogenesis is driven by the 2d distribution of mechanical tensions within the patterned cell sheet. We will test this hypothesis by computational modeling and live imaging of epithelial dynamics and by direct analysis of mechanical tensions in patterned epithelial sheets. Our work will lead to an experimentally validated computational framework for 3d epithelial morphogenesis. Given the highly conserved nature of processes involved in epithelial morphogenesis, the results of or studies may shed light on epithelial dynamics in wide range of developmental systems.
We propose computational and experimental studies of epithelial morphogenesis, defined as the set of processes that convert two-dimensional sheets of cells into complex three-dimensional structures of tissues and organs. Studies of epithelial morphogenesis are important for mechanistic understanding of normal development and for elucidating the origins of developmental disorders.
| Mattingly, Henry H; Transtrum, Mark K; Abbott, Michael C et al. (2018) Maximizing the information learned from finite data selects a simple model. Proc Natl Acad Sci U S A 115:1760-1765 |
| Diegmiller, Rocky; Montanelli, Hadrien; Muratov, Cyrill B et al. (2018) Spherical Caps in Cell Polarization. Biophys J 115:26-30 |
| Goyal, Yogesh; Levario, Thomas J; Mattingly, Henry H et al. (2017) Parallel imaging of Drosophila embryos for quantitative analysis of genetic perturbations of the Ras pathway. Dis Model Mech 10:923-929 |
| Arora, Natasha; Imran Alsous, Jasmin; Guggenheim, Jacob W et al. (2017) A process engineering approach to increase organoid yield. Development 144:1128-1136 |
| Imran Alsous, Jasmin; Villoutreix, Paul; Berezhkovskii, Alexander M et al. (2017) Collective Growth in a Small Cell Network. Curr Biol 27:2670-2676.e4 |
| Song, Yonghyun; Marmion, Robert A; Park, Junyoung O et al. (2017) Dynamic Control of dNTP Synthesis in Early Embryos. Dev Cell 42:301-308.e3 |
| Pyrowolakis, George; Veikkolainen, Ville; Yakoby, Nir et al. (2017) Gene regulation during Drosophila eggshell patterning. Proc Natl Acad Sci U S A 114:5808-5813 |
| Cardoso, Maira Arruda; Fontenele, Marcio; Lim, Bomyi et al. (2017) A novel function for the I?B inhibitor Cactus in promoting Dorsal nuclear localization and activity in the Drosophila embryo. Development 144:2907-2913 |
| Mattingly, Henry H; Sheintuch, Moshe; Shvartsman, Stanislav Y (2017) The Design Space of the Embryonic Cell Cycle Oscillator. Biophys J 113:743-752 |
| Osterfield, Miriam; Berg, Celeste A; Shvartsman, Stanislav Y (2017) Epithelial Patterning, Morphogenesis, and Evolution: Drosophila Eggshell as a Model. Dev Cell 41:337-348 |
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