[EN] FORCE-RESPONSIVE POLYMERSOMES AND NANOREACTORS; PROCESSES UTILIZING THE SAME<br/>[FR] POLYMERSOMES ET NANORÉACTEURS SENSIBLES À LA FORCE; PROCÉDÉS LES UTILISANT
申请人:ADOLPHE MERKLE INSTITUTE UNIV OF FRIBOURG
公开号:WO2019034597A1
公开(公告)日:2019-02-21
The mechanically induced melting properties of DNA were employed to achieve force labile membranes is described. Nucleobase pairs were used as mechanophores. Adenine and thymine functionalized complementary amphiphilic block copolymers were self-assembled into polymersomes. The nucleobases formed hydrogen bonds which were disrupted upon force stimulation. The exposure of the disconnected nucleobases to the hydrophobic matrix of the membranes lead to a change of permeability which permitted the exchange of water-soluble molecules throughout the polymer matrix. Moreover, the encapsulation of horseradish peroxidase enabled the reaction of luminol with hydrogen peroxide to yield a luminescence producing species similar to the marine bioluminescence. Moreover, the same nano-reactors were employed to catalyze the formation of a polyacrylamide gel when force was applied. Insights into the change of permeability of supramolecular networks upon force are provided. These systems are useful for drug delivery, as nanoreactors and for the selective release of curing agents for 3D printing, or fragrances.
ANTIBACTERIAL POLYMER, PRODUCTION METHOD THEREFOR, AND USAGE THEREOF
申请人:NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITY
公开号:US20170202217A1
公开(公告)日:2017-07-20
Provided is a polymer material having effective antibacterial properties and having bio adaptability in which cytotoxicity, especially low hemolysis, when used in contact with in vivo tissue and blood is suppressed so as to be low. The polymer is characterized by comprising a main chain and a side chain portion which is linked to the main chain via a linker and which contains at least a structure specified by the following (A) and (B). (A) A structure containing a cationic group and (B) a structure in which expression of bio adaptability is expected.
Water-soluble fluorescent unimolecular micelles: ultra-small size, tunable fluorescence emission from the visible to NIR region and enhanced biocompatibility for <i>in vitro</i> and <i>in vivo</i> bioimaging
Water-soluble fluorescent unimolecular micelles with ultra-small size and various fluorescence emission for multicolor imaging.
水溶性荧光单分子微胶束具有超小尺寸和多种荧光发射,用于多色成像。
The Power of Shielding: Low Toxicity and High Transfection Performance of Cationic Graft Copolymers Containing Poly(2-oxazoline) Side Chains
作者:Anne-Kristin Trützschler、Tanja Bus、Martin Sahn、Anja Traeger、Christine Weber、Ulrich S. Schubert
DOI:10.1021/acs.biomac.8b00362
日期:2018.7.9
efficiency, the best performing copolymers (A-g-Ox5(10) and M-g-Ox5(10)) revealed equal or better performances compared to those of the corresponding homopolymers. In particular, the graft copolymers with low DG and side chain DP transfected well with over 10-fold higher IC50 values. In contrast, a DG of 30% resulted in a loss of transfection efficiency due to missing ability for endosomal release, and a