Abstract:
BACKGROUND:There is an increasing need to understand cell-cell interactions for cell and tissue engineering purposes, such as optimizing cell sheet constructs, as well as for examining adhesion defect diseases. For cell-sheet engineering, one major obstacle to sheet function is that cell sheets in suspension are fragile and, over time, will contract. While the role of the cytoskeleton in maintaining the structure and adhesion of cells cultured on a rigid substrate is well-characterized, a systematic examination of the role played by different components of the cytoskeleton in regulating cell sheet contraction and cohesion in the absence of a substrate has been lacking. RESULTS:In this study, keratinocytes were cultured until confluent and cell sheets were generated using dispase to remove the influence of the substrate. The effects of disrupting actin, microtubules or intermediate filaments on cell-cell interactions were assessed by measuring cell sheet cohesion and contraction. Keratin intermediate filament disruption caused comparable effects on cell sheet cohesion and contraction, when compared to actin or microtubule disruption. Interfering with actomyosin contraction demonstrated that interfering with cell contraction can also diminish cell cohesion. CONCLUSIONS:All components of the cytoskeleton are involved in maintaining cell sheet cohesion and contraction, although not to the same extent. These findings demonstrate that substrate-free cell sheet biomechanical properties are dependent on the integrity of the cytoskeleton network.
journal_name
BMC Biotechnoljournal_title
BMC biotechnologyauthors
Wei Q,Reidler D,Shen MY,Huang Hdoi
10.1186/1472-6750-13-17subject
Has Abstractpub_date
2013-02-26 00:00:00pages
17issn
1472-6750pii
1472-6750-13-17journal_volume
13pub_type
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journal_title:BMC biotechnology
pub_type: 杂志文章
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pub_type: 杂志文章
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