Becker, Bastian; Englert, Simon; Schneider, Hendrik; Yanakieva, Desislava; Hofmann, Sarah; Dombrowsky, Carolin; Macarron Palacios, Arturo; Bitsch, Sebastian; Elter, Adrian; Meckel, Tobias; Kugler, Benedikt; Schirmacher, Anastasyia; Avrutina, Olga; Diederichsen, Ulf; Kolmar, Harald published their research in Journal of Peptide Science in 2021. The article was titled 《Multivalent dextran hybrids for efficient cytosolic delivery of biomolecular cargoes》.Formula: C10H22N2O2 The article contains the following contents:
The development of novel biotherapeutics based on peptides and proteins is often limited to extracellular targets, because these mols. are not able to reach the cytosol. In recent years, several approaches were proposed to overcome this limitation. A plethora of cell-penetrating peptides (CPPs) was developed for cytoplasmic delivery of cell-impermeable cargo mols. For many CPPs, multimerization or multicopy arrangement on a scaffold resulted in improved delivery but also higher cytotoxicity. Recently, we introduced dextran as multivalent, hydrophilic polysaccharide scaffold for multimerization of cell-targeting cargoes. Here, we investigated covalent conjugation of a CPP to dextran in multiple copies and assessed the ability of resulted mol. hybrid to enter the cytoplasm of mammalian cells without largely compromising cell viability. As a CPP, we used a novel, low-toxic cationic amphiphilic peptide L17E derived from M-lycotoxin. Here, we show that cell-penetrating properties of L17E are retained upon multivalent covalent linkage to dextran. Dextran-L17E efficiently mediated cytoplasmic translocation of an attached functional peptide and a peptide nucleic acid (PNA). Moreover, a synthetic route was established to mask the lysine side chains of L17E with a photolabile protecting group thus opening avenues for light-triggered activation of cellular uptake. After reading the article, we found that the author used tert-Butyl (5-aminopentyl)carbamate(cas: 51644-96-3Formula: C10H22N2O2)
Some of the reported applications of tert-Butyl (5-aminopentyl)carbamate(cas: 51644-96-3) include: synthesis of of a supermacrocycle that self-assemble to form organic nanotubes., preparation of water-soluble unsymmetrical sulforhodamine fluorophores from monobrominated sulfoxanthene dye, synthesis of functionalized porphyrins as biocompatible carrier system for photodynamic therapy (PDT).Formula: C10H22N2O2
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