Abstract:
:Driven by the clinical need for a strong tissue adhesive with elastomeric material properties, a departure from legacy crosslinking chemistries was sought as a multipurpose platform for tissue mending. A fresh approach to bonding wet substrates has yielded a synthetic biomaterial that overcomes the drawbacks of free-radical and nature-inspired bioadhesives. A food-grade liquid polycaprolactone grafted with carbene precursors yields CaproGlu. The first-of-its-kind low-viscosity prepolymer is VOC-free and requires no photoinitiators. Grafted diazirine end-groups form carbene diradicals upon low energy UVA (365 nm) activation that immediately crosslink tissue surfaces; no pre-heating or animal-derived components are required. The hydrophobic polymeric environment enables metastable functional groups not possible in formulations requiring solvents or water. Activated diazirine within CaproGlu is uniquely capable of crosslinking all amino acids, even on wet tissue substrates. CaproGlu undergoes rapid liquid-to-biorubber transition within seconds of UVA exposure-features not found in any other bioadhesive. The exceptional shelf stability of CaproGlu allows gamma sterilization with no change in material properties. CaproGlu wet adhesiveness is challenged against current unmet clinical needs: anastomosis of spliced blood vessels, anesthetic muscle patches, and human platelet-mediating coatings. The versatility of CaproGlu enables both organic and inorganic composites for future bioadhesive platforms.
journal_name
Biomaterialsjournal_title
Biomaterialsauthors
Djordjevic I,Pokholenko O,Shah AH,Wicaksono G,Blancafort L,Hanna JV,Page SJ,Nanda HS,Ong CB,Chung SR,Chin AYH,McGrouther D,Choudhury MM,Li F,Teo JS,Lee LS,Steele TWJdoi
10.1016/j.biomaterials.2020.120215subject
Has Abstractpub_date
2020-11-01 00:00:00pages
120215eissn
0142-9612issn
1878-5905pii
S0142-9612(20)30461-0journal_volume
260pub_type
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