Abstract:
:The control of cell behaviour through material geometry is appealing as it avoids the requirement for complex chemical surface modifications. Significant advances in new technologies have been made to the development of polymeric biomaterials with controlled geometry and physico-chemical properties. Solution blow spinning technique has the advantage of ease of use allowing the production of nano or microfibres and the direct fibre deposition on any surface in situ. Yet, in spite of these advantages, very little is known about the influence of such fibres on biological functions such as immune response and cell migration. In this work, we engineered polymeric fibres composed of either pure poly(lactic acid) (PLA) or blends of PLA and polyethylene glycol (PEG) by solution blow spinning and determined their impact on dendritic cells, highly specialised cells essential for immunity and tolerance. We also determined the influence of fibres on cell adhesion and motility. Cells readily interacted with fibres resulting in an intimate contact characterised by accumulation of actin filaments and focal adhesion components at sites of cell-fibre interactions. Moreover, cells were guided along the fibres and actin and focal adhesion components showed a highly dynamic behaviour at cell-fibre interface. Remarkably, fibres did not elicit any substantial increase of activation markers and inflammatory cytokines in dendritic cells, which remained in their immature (inactive) state. Taken together, these findings will be useful for developing new biomaterials for applications in tissue engineering and regenerative medicine.
journal_name
Acta Biomaterjournal_title
Acta biomaterialiaauthors
Paschoalin RT,Traldi B,Aydin G,Oliveira JE,Rütten S,Mattoso LHC,Zenke M,Sechi Adoi
10.1016/j.actbio.2017.01.020subject
Has Abstractpub_date
2017-03-15 00:00:00pages
161-174eissn
1742-7061issn
1878-7568pii
S1742-7061(17)30020-Xjournal_volume
51pub_type
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2016-10-01 00:00:00
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journal_title:Acta biomaterialia
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