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Methods Mol Biol
2022 Jan 01;2438:415-437. doi: 10.1007/978-1-0716-2035-9_24.
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Assays for Apical Constriction Using the Xenopus Model.
Baldwin AT
,
Popov IK
,
Wallingford JB
,
Chang C
.
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Apical constriction refers to the active, actomyosin-driven process that reduces apical cell surface area in epithelial cells. Apical constriction is utilized in epithelial morphogenesis during embryonic development in multiple contexts, such as gastrulation, neural tube closure, and organogenesis. Defects in apical constriction can result in congenital birth defects, yet our understanding of the molecular control of apical constriction is relatively limited. To uncover new genetic regulators of apical constriction and gain mechanistic insight into the cell biology of this process, we need reliable assay systems that allow real-time observation and quantification of apical constriction as it occurs and permit gain- and loss-of-function analyses to explore gene function and interaction during apical constriction. In this chapter, we describe using the early Xenopus embryo as an assay system to investigate molecular mechanisms involved in apical constriction during both gastrulation and neurulation.
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