The alternatively-included 11a sequence modifies the effects of Mena on actin cytoskeletal organization and cell behavior.
The alternatively-included 11a sequence modifies the effects of Mena on actin cytoskeletal organization and cell behavior.
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替代性的11A序列改变了MENA对肌动蛋白细胞骨架组织和细胞行为的影响。
DOI:
10.1038/srep35298
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发表时间:
2016-10-17
影响因子:
4.6
通讯作者:
Gertler FB
中科院分区:
文献类型:
--
作者:
Balsamo M;Mondal C;Carmona G;McClain LM;Riquelme DN;Tadros J;Ma D;Vasile E;Condeelis JS;Lauffenburger DA;Gertler FB
During tumor progression, alternative splicing gives rise to different Mena protein isoforms. We analyzed how Mena11a, an isoform enriched in epithelia and epithelial-like cells, affects Mena-dependent regulation of actin dynamics and cell behavior. While other Mena isoforms promote actin polymerization and drive membrane protrusion, we find that Mena11a decreases actin polymerization and growth factor-stimulated membrane protrusion at lamellipodia. Ectopic Mena11a expression slows mesenchymal-like cell motility, while isoform-specific depletion of endogenous Mena11a in epithelial-like tumor cells perturbs cell:cell junctions and increases membrane protrusion and overall cell motility. Mena11a can dampen membrane protrusion and reduce actin polymerization in the absence of other Mena isoforms, indicating that it is not simply an inactive Mena isoform. We identify a phosphorylation site within 11a that is required for some Mena11a-specific functions. RNA-seq data analysis from patient cohorts demonstrates that the difference between mRNAs encoding constitutive Mena sequences and those containing the 11a exon correlates with metastasis in colorectal cancer, suggesting that 11a exon exclusion contributes to invasive phenotypes and leads to poor clinical outcomes.
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影响因子:
64.5
作者:
Gertler, FB;Niebuhr, K;Soriano, P
通讯作者:
Soriano, P
影响因子:
4.8
作者:
Barzik, M;Kotova, TI;Schafer, DA
通讯作者:
Schafer, DA
影响因子:
4.6
作者:
Gates, Julie;Mahaffey, James P.;Peifer, Mark
通讯作者:
Peifer, Mark
DOI:
10.1073/pnas.1214394109
发表时间:
2012-11-20
影响因子:
11.1
作者:
Di Modugno, Francesca;Iapicca, Pierluigi;Nistico, Paola
通讯作者:
Nistico, Paola
影响因子:
9.2
作者:
Bailly, M;Ichetovkin, I;Condeelis, J
通讯作者:
Condeelis, J