Abstract
There is a significant medical need for tough biodegradable polymer adhesives that can adapt to or recover from various mechanical deformations while remaining strongly attached to the underlying tissue. We approached this problem by using a polymer poly(glycerol-co-sebacate acrylate) and modifying the surface to mimic the nanotopography of gecko feet, which allows attachment to vertical surfaces. Translation of existing gecko-inspired adhesives for medical applications is complex, as multiple parameters must be optimized, including: biocompatibility, biodegradation, strong adhesive tissue bonding, as well as compliance and conformability to tissue surfaces. Ideally these adhesives would also have the ability to deliver drugs or growth factors to promote healing. As a first demonstration, we have created a gecko-inspired tissue adhesive from a biocompatible and biodegradable elastomer combined with a thin tissue-reactive biocompatible surface coating. Tissue adhesion was optimized by varying dimensions of the nanoscale pillars, including the ratio of tip diameter to pitch and the ratio of tip diameter to base diameter. Coating these nanomolded pillars of biodegradable elastomers with a thin layer of oxidized dextran significantly increased the interfacial adhesion strength on porcine intestine tissue in vitro and in the rat abdominal subfascial in vivo environment. This gecko-inspired medical adhesive may have potential applications for sealing wounds and for replacement or augmentation of sutures or staples.
| Original language | English |
|---|---|
| Pages (from-to) | 2307-2312 |
| Number of pages | 6 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Volume | 105 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2008 Feb 19 |
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All Science Journal Classification (ASJC) codes
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A biodegradable and biocompatible gecko-inspired tissue adhesive. / Mahdavi, Alborz; Ferreira, Lino; Sundback, Cathryn; Nichol, Jason W.; Chan, Edwin P.; Carter, David J.D.; Bettinger, Chris J.; Patanavanich, Siamrut; Chignozha, Loice; Ben-Joseph, Eli; Galakatos, Alex; Pryor, Howard; Pomerantseva, Irina; Masiakos, Peter T.; Faquin, William; Zumbuehl, Andreas; Hong, Seungpyo; Borenstein, Jeffrey; Vacanti, Joseph; Langer, Robert; Karp, Jeffrey M.
In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 105, No. 7, 19.02.2008, p. 2307-2312.Research output: Contribution to journal › Article
TY - JOUR
T1 - A biodegradable and biocompatible gecko-inspired tissue adhesive
AU - Mahdavi, Alborz
AU - Ferreira, Lino
AU - Sundback, Cathryn
AU - Nichol, Jason W.
AU - Chan, Edwin P.
AU - Carter, David J.D.
AU - Bettinger, Chris J.
AU - Patanavanich, Siamrut
AU - Chignozha, Loice
AU - Ben-Joseph, Eli
AU - Galakatos, Alex
AU - Pryor, Howard
AU - Pomerantseva, Irina
AU - Masiakos, Peter T.
AU - Faquin, William
AU - Zumbuehl, Andreas
AU - Hong, Seungpyo
AU - Borenstein, Jeffrey
AU - Vacanti, Joseph
AU - Langer, Robert
AU - Karp, Jeffrey M.
PY - 2008/2/19
Y1 - 2008/2/19
N2 - There is a significant medical need for tough biodegradable polymer adhesives that can adapt to or recover from various mechanical deformations while remaining strongly attached to the underlying tissue. We approached this problem by using a polymer poly(glycerol-co-sebacate acrylate) and modifying the surface to mimic the nanotopography of gecko feet, which allows attachment to vertical surfaces. Translation of existing gecko-inspired adhesives for medical applications is complex, as multiple parameters must be optimized, including: biocompatibility, biodegradation, strong adhesive tissue bonding, as well as compliance and conformability to tissue surfaces. Ideally these adhesives would also have the ability to deliver drugs or growth factors to promote healing. As a first demonstration, we have created a gecko-inspired tissue adhesive from a biocompatible and biodegradable elastomer combined with a thin tissue-reactive biocompatible surface coating. Tissue adhesion was optimized by varying dimensions of the nanoscale pillars, including the ratio of tip diameter to pitch and the ratio of tip diameter to base diameter. Coating these nanomolded pillars of biodegradable elastomers with a thin layer of oxidized dextran significantly increased the interfacial adhesion strength on porcine intestine tissue in vitro and in the rat abdominal subfascial in vivo environment. This gecko-inspired medical adhesive may have potential applications for sealing wounds and for replacement or augmentation of sutures or staples.
AB - There is a significant medical need for tough biodegradable polymer adhesives that can adapt to or recover from various mechanical deformations while remaining strongly attached to the underlying tissue. We approached this problem by using a polymer poly(glycerol-co-sebacate acrylate) and modifying the surface to mimic the nanotopography of gecko feet, which allows attachment to vertical surfaces. Translation of existing gecko-inspired adhesives for medical applications is complex, as multiple parameters must be optimized, including: biocompatibility, biodegradation, strong adhesive tissue bonding, as well as compliance and conformability to tissue surfaces. Ideally these adhesives would also have the ability to deliver drugs or growth factors to promote healing. As a first demonstration, we have created a gecko-inspired tissue adhesive from a biocompatible and biodegradable elastomer combined with a thin tissue-reactive biocompatible surface coating. Tissue adhesion was optimized by varying dimensions of the nanoscale pillars, including the ratio of tip diameter to pitch and the ratio of tip diameter to base diameter. Coating these nanomolded pillars of biodegradable elastomers with a thin layer of oxidized dextran significantly increased the interfacial adhesion strength on porcine intestine tissue in vitro and in the rat abdominal subfascial in vivo environment. This gecko-inspired medical adhesive may have potential applications for sealing wounds and for replacement or augmentation of sutures or staples.
UR - http://www.scopus.com/inward/record.url?scp=40649128784&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=40649128784&partnerID=8YFLogxK
U2 - 10.1073/pnas.0712117105
DO - 10.1073/pnas.0712117105
M3 - Article
C2 - 18287082
AN - SCOPUS:40649128784
VL - 105
SP - 2307
EP - 2312
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
SN - 0027-8424
IS - 7
ER -