Forces generated by cell intercalation tow epidermal sheets in mammalian tissue morphogenesis.
Forces generated by cell intercalation tow epidermal sheets in mammalian tissue morphogenesis.
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在哺乳动物组织形态发生中,细胞嵌入产生的力牵引表皮片。
DOI:
10.1016/j.devcel.2014.02.011
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发表时间:
2014-03-31
影响因子:
11.8
通讯作者:
Fuchs, Elaine
中科院分区:
文献类型:
--
作者:
Heller, Evan;Kumar, K. Vijay;Grill, Stephan W.;Fuchs, Elaine
While gastrulation movements offer mechanistic paradigms for how collective cellular movements shape developing embryos, far less is known about coordinated cellular movements that occur later in development. Studying eyelid closure, we explore a case where an epithelium locally reshapes, expands, and moves over another epithelium. Live imaging, gene targeting and cell cycle inhibitors reveal that closure does not require overlying periderm, proliferation or supracellular actin cable assembly. Laser ablation and quantitative analyses of tissue deformations further distinguish the mechanism from wound-repair and dorsal closure. Rather, cell intercalations parallel to the tissue front locally compress it perpendicularly, pulling the surrounding epidermis along the closure axis. Functional analyses in vivo show that the mechanism requires localized myosin-IIA and α5β1-fibronectin-mediated migration, and E-cadherin downregulation likely stimulated by Wnt signaling. These studies uncover a mode of epithelial closure in which forces generated by cell intercalation are leveraged to tow the surrounding tissue.
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影响因子:
64.8
作者:
MIETTINEN, PJ;BERGER, JE;DERYNCK, R
通讯作者:
DERYNCK, R
影响因子:
2.6
作者:
Carroll, JM;Luetteke, NC;Watt, FM
通讯作者:
Watt, FM
影响因子:
9.2
作者:
Marsden, M;DeSimone, DW
通讯作者:
DeSimone, DW
影响因子:
11.8
作者:
Fernandez-Gonzalez R;Simoes Sde M;Röper JC;Eaton S;Zallen JA
通讯作者:
Zallen JA
影响因子:
48
作者:
Blanchard, Guy B.;Kabla, Alexandre J.;Adams, Richard J.
通讯作者:
Adams, Richard J.