Influence of Sulfur‐Containing Diamino Acid Structure on Covalently Crosslinked Copolypeptide Hydrogels
作者:Eric D. Raftery、Eric G. Gharkhanian、Nicole G. Ricapito、J. McNamara、Timothy J. Deming
DOI:10.1002/asia.201801031
日期:2018.11.16
structure revealed that different di‐α‐amino acids were not equivalent in crosslink formation. Notably, l‐cystine was found to produce significantly weaker hydrogels compared to l‐homocystine, l‐cystathionine, and l‐lanthionine, suggesting that l‐cystine may be a sub‐optimal choice of di‐α‐amino acid for preparation of copolypeptide networks. The di‐α‐amino acid crosslinkers also provided different
[EN] CONFORMATION SWITCHABLE ANTIMICROBIAL PEPTIDES AND METHODS OF USING THE SAME<br/>[FR] PEPTIDES ANTIMICROBIENS À CONFORMATION COMMUTABLE ET PROCÉDÉS D'UTILISATION DE CES DERNIERS
申请人:UNIV ILLINOIS
公开号:WO2018140613A1
公开(公告)日:2018-08-02
The disclosure provides a class of pH-sensitive, helix/random conformation switchable antimicrobial polypeptide (HRS-AMP) compositions as a single agent to selectively kill bacteria (e.g., H. pylori) under acidic condition in the stomach with diminished bacterial resistance compared to currently used antibiotics. Methods of treating bacterial infections in the stomach are also provided.
Rapid and Mild Synthesis of Amino Acid <i>N</i>
-Carboxy Anhydrides: Basic-to-Acidic Flash Switching in a Microflow Reactor
作者:Yuma Otake、Hiroyuki Nakamura、Shinichiro Fuse
DOI:10.1002/anie.201803549
日期:2018.8.27
Polymerization of N‐carboxyanhydrides (NCAs) is the primary process used to prepare polypeptides. The synthesis of various pure NCAs is key to the efficient synthesis of polypeptides. The only practical method that can be used to synthesize NCAs requires harsh acidic conditions that make acid‐labile substrates unusable and results in an undesired ring opening of NCAs. Basic‐to‐acidic flash switching
[EN] POLYPEPT(O)ID-BASED GRAFT COPOLYMERS FOR IN VIVO IMAGING BY TETRAZINE TRANSCYCLOOCTENE CLICK CHEMISTRY<br/>[FR] COPOLYMÈRES GREFFÉS À BASE DE POLYPEPT(O)IDE POUR IMAGERIE IN VIVO PAR CHIMIE CLICK DE TÉTRAZINE TRANSCYCLOOCTÈNE
申请人:RIGSHOSPITALET
公开号:WO2020002459A1
公开(公告)日:2020-01-02
There is provided novel polypeptide-based carrier systems, which make it possible to label polymeric nanoparticles in the living organism. This enables new approaches in tumor diagnostics (high signal to background ratio) and radiotherapy (radiotherapy of solid tumors). The polypeptide-based carrier system comprises a polypept(o)idic comb (graft) copolymer, and one or more tetrazine bioorthogonal functional groups each linked to a diagnostic agent.
Double-brush Langmuir–Blodgett monolayers of α-helical diblock copolypeptides
作者:Le-Thu T. Nguyen、Eltjo J. Vorenkamp、Christophe J.M. Daumont、Gerrit ten Brinke、Arend J. Schouten
DOI:10.1016/j.polymer.2010.01.014
日期:2010.3
The synthesis of amphiphilic diblock copolypeptides consisting of poly(α-l-glutamic acid) (PLGA) and poly(γ-methyl-l-glutamate-ran-γ-stearyl-l-glutamate) with 30 mol % of stearyl substituents (PMLGSLG) and their monolayer behavior at the air–waterinterface have been studied. PLGA-b-PMLGSLG was synthesized via a diblock copolymer precursor consisting of poly(γ-tert-butyl-l-glutamate) (PtBuLG) and PMLGSLG
由聚(α-两亲性嵌段共聚的合成升谷氨酸)(PLGA)和聚(γ-甲基升-glutamate-跑-γ-硬脂基升-谷氨酸)用30摩尔%的硬脂基取代基(PMLGSLG )及其在空气-水界面的单层行为已得到研究。PLGA- b -PMLGSLG经合成的二嵌段共聚物的前体由聚(γ-叔丁基-升-谷氨酸)(PtBuLG)和PMLGSLG块,与叔丁基作为羧酸的弱酸弱保护基。发现聚合条件影响α-螺旋与β-片层含量的比率,并且可以对其进行调节以显着提高二嵌段共多肽螺旋度。成功制备了纯α-螺旋PtBuLG- b -PMLGSLG二嵌段共聚物。除去叔丁基后,PLGA- b的研究-Langmuir单层膜和Langmuir-Blodgett膜中的-PMLGSLG两亲性二嵌段共聚物证明形成了稳定的α-螺旋双刷结构,其螺旋线倾斜远离基材表面。这些双刷单层膜结合了单向排列的螺旋大偶极子和PMLGSLG嵌段侧链罩的液体状特征所