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Organo-catalyzed ring opening polymerization of a 1,4-dioxane-2,5-dione deriving from glutamic acid.
Preparation of functionalized alkynyl magnetic microspheres for the selective enrichment of cell glycoproteins based on click chemistry.
Functionalized alkynyl polyvinyl alcohol magnetic microspheres (PVA MMs) were developed for the specific enrichment of sialic acid-rich glycoproteins by click chemistry. The capture capability for proteins was evaluated through a novel dual-labeled bovine serum albumin (BSA) that uti...
Amyloid inspired self-assembled peptide nanofibers.
We present oppositely charged amyloid inspired peptides (AIPs), which rapidly self-assemble into nanofibers at pH 7 upon mixing in water caused by noncovalent interactions. Mechanical properties of the gels formed by self-assembled AIP nanofibers were analyzed with oscillatory rheology. AIP gels exh...
Utilizing conformational changes for patterning thin films of recombinant spider silk proteins.
We explore the self-assembly behavior of a recombinantly produced spider silk protein based on the dragline silk of the A. diadematus, eADF4 (C16), by selectively patterning its secondary structure using capillary transfer lithography and solvent-assisted micro-contact molding. Two conformational tr...
DNA stickers promote polymer adsorption onto cellulose.
I crystal structure under conditions that favored specific adsorption over calcium-mediated electrostatically-driven adsorption. In addition, an anionic polyacrylamide (A-PAM) with grafted CBO also adsorbed onto the surface of cellulose in CaCl2, whereas the unmodified A-PAM did not. This work shows...
Peptide self-assembly on cell membranes to induce cell lysis.
We found that when PTP-7b (FLGALFKALSHLL), a concentration dependent self-assembling peptide, bound to tissue cells and accumulated on cell surfaces, they migrated and self-assembled into exosome-like aggregates at certain locations on the cell membranes. Studies using confocal microscopy and SEM re...
Peptide-decorated liposomes promote arrest and aggregation of activated platelets under flow on vascular injury relevant protein surfaces in...
We describe the design of a liposomal construct simultaneously surface-decorated with three peptides (a vWF-binding peptide (VBP), a collagen-binding peptide (CBP), and an active platelet clustering cyclic-RGD (cRGD) peptide), that can integrate platelet-mimetic dual hemostatic activities of adhesio...
Synthesis and characterizations of in situ cross-linkable gelatin and 4-arm-PPO-PEO hybrid hydrogels via enzymatic reaction for tissue regen...
We demonstrate that the in situ cross-linkable hydrogels formed by hybridization of gelatin and Tetronic via enzyme-mediated reactions hold great promise for use as injectable matrices for tissue regenerative medicine due to their tunable physico-chemical properties and excellent bioactivity....
Amphiphilic self-assembled "polymeric drugs": morphology, properties, and biological behavior of nanoparticles.
This article reports the fabrication and characterization of NPs based on the self-assembling of polymeric drugs with amphiphilic character synthetized from oleyl 2-acetamido-2-deoxy-α-d-glucopyranoside methacrylate and vinyl pyrrolidone (OAGMA-VP). NPs were spherical, with an appar...
Facile method for stiff, tough, and strong nanocomposites by direct exfoliation of multilayered graphene into native nanocellulose matrix.
We show nanocomposites consisting of aligned assemblies of multilayered graphene and NFC with excellent tensile mechanical properties without any surface treatments. The optimum composition was found at 1.25 wt % graphene multilayers giving a Young's modulus of 16.9 GPa, ultimate strength 351 MPa, s...