Alpha actinin-1 regulates cell-matrix adhesion organization in keratinocytes: consequences for skin cell motility.
Alpha actinin-1 regulates cell-matrix adhesion organization in keratinocytes: consequences for skin cell motility.
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DOI:
10.1038/jid.2014.505
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发表时间:
2015-04
影响因子:
6.5
通讯作者:
Jones, Jonathan C. R.
中科院分区:
文献类型:
--
作者:
Hamill, Kevin J.;Hiroyasu, Sho;Colburn, Zachary T.;Ventrella, Rosa V.;Hopkinson, Susan B.;Skalli, Omar;Jones, Jonathan C. R.
The migration of keratinocytes in wound healing requires coordinated activities of the motility machinery of a cell, the cytoskeleton and matrix adhesions. In this study we assessed the role of alpha actinin-1 (ACTN1), one of the two alpha actinin isoforms expressed in keratinocytes, in skin cell migration via an shRNA-mediated knockdown approach. Keratinocytes deficient in ACTN1 exhibit changes in their actin cytoskeleton organization, a loss in front-rear polarity and impaired lamellipodial dynamics. They also display aberrant directed motility and move slower than their wild-type counterparts. Moreover, they have abnormally arranged matrix adhesion sites. Specifically, the focal adhesions in ACTN1 knockdown keratinocytes are not organized as distinct entities. Rather, focal adhesion proteins are arranged in a circle subjacent to cortical fibers of actin. In the same cells, hemidesmosome proteins arrange in cat paw patterns, more typical of confluent, stationary cells and β4 integrin dynamics are reduced in knockdown cells compared with control keratinocytes. In summary, our data suggest a mechanism by which ACTN1 determines the motility of keratinocytes by regulating the organization of the actin cytoskeleton, focal adhesion and hemidesmosome proteins complexes, thereby modulating cell speed, lamellipodial dynamics and directed migration.
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影响因子:
7.8
作者:
Carter, W G;Kaur, P;Gil, S G;Gahr, P J;Wayner, E A
通讯作者:
Wayner, E A
DOI:
10.1038/jid.2009.439
发表时间:
2010-06
期刊:
The Journal of investigative dermatology
影响因子:
--
作者:
通讯作者:
--
影响因子:
4.8
作者:
Khurana, Simran;Chakraborty, Sharmistha;Kao, Hung-Ying
通讯作者:
Kao, Hung-Ying
影响因子:
4
作者:
Kovac, Bianca;Teo, Jessica L.;Vallenius, Tea
通讯作者:
Vallenius, Tea
影响因子:
6.5
作者:
Hamill, Kevin J.;Hopkinson, Susan B.;Jones, Jonathan C. R.
通讯作者:
Jones, Jonathan C. R.