The results presented here highlight the extremely useful nature of ultra-short peptides as building blocks in the development of smart multicomponent supramolecular devices. A facile bottom-up strategy for the synthesis of a small library of stimuli-responsive smart organogelators has been proposed based on the predictive self-assembly of ultra-short peptides. More importantly, the narcissistic self-sorting of the gelators has been evaluated as a simple method for the efficient co-assembly of a donor-acceptor dual-component gel, allowing the investigation of possible future applications of similar systems in the development of a supramolecular photo-conversion device. Interestingly, it was observed that the self-organization of the components can lead to highly ordered systems in which discrimination between compatible and non-compatible building blocks directs the effective organization of the chromophores and gives rise to the formation of an excited-state complex with exciplex-like emission. The current report may prove important in the development of organogel-based multicomponent smart devices.
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http://dx.doi.org/10.1002/chem.201303116 | DOI Listing |
J Chromatogr B Analyt Technol Biomed Life Sci
December 2024
Hunan Provincial Key Laboratory of Anti-Resistance Microbial Drugs, Department of Pharmacy, The Third Hospital of Changsha, Changsha 410015, People's Republic of China. Electronic address:
Individualized medication with peptide antibiotics, guided by therapeutic drug monitoring, is essential to treat infections caused by multidrug-resistant bacteria. Peptide antibiotics exhibit an "on-off" elution mechanism on a C18 column, leading to adsorption at the column inlet in all-aqueous conditions. Unlike small molecules, column length minimally influences their retention, with longer columns simply broadening peptide antibiotic peaks due to unnecessary post-column volume.
View Article and Find Full Text PDFMater Horiz
November 2024
Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India.
Harnessing the potential of hydrogel-based localized drug delivery systems holds immense promise for mitigating the systemic side effects associated with conventional cancer therapies. However, the development of such systems demands the fulfillment of multiple stringent criteria, including injectability, biocompatibility, and controlled release. Herein, we present an ultra-small peptide-based hydrogel for the sustained and targeted delivery of doxorubicin in a murine model of breast cancer.
View Article and Find Full Text PDFPLoS One
September 2024
Department of Translational Medicine, Medical Radiation Physics, Lund University, Malmö, Sweden.
Identifying biomarkers in fibrotic lung disease is key for early anti-fibrotic intervention. Dynamic contrast-enhanced (DCE) MRI offers valuable perfusion-related insights in fibrosis but adapting human MRI methods to rodents poses challenges. Here, we explored these translational challenges for the inflammatory and fibrotic phase of a bleomycin lung injury model in rats.
View Article and Find Full Text PDFAnticancer Agents Med Chem
September 2024
Department of Pharmaceutical Sciences, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, Madhya Pradesh, India.
Background: Ultra-short peptides are essential therapeutic agents due to their heightened selectivity and reduced toxicity. Scientific literature documents the utilization of dipeptides, tripeptides, and tetrapeptides as promising agents for combating cancer. We have created a range of tryptophan-based peptides derived from literature sources in order to assess their potential as anticancer drugs.
View Article and Find Full Text PDFFront Pharmacol
August 2024
Instituto de Química-Física "Blas Cabrera" (IQF), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain.
Cationic ultrashort lipopeptides (USLPs) are promising antimicrobial candidates to combat multidrug-resistant bacteria. Using DICAMs, a newly synthesized family of tripeptides with net charges from -2 to +1 and a fatty amine conjugated to the -terminus, we demonstrate that anionic and neutral zwitterionic USLPs can possess potent antimicrobial and membrane-disrupting activities against prevalent human pathogens such as and The strongest antimicrobials completely halt bacterial growth at low micromolar concentrations, reduce bacterial survival by several orders of magnitude, and may kill planktonic cells and biofilms. All of them comprise either an anionic or neutral zwitterionic peptide attached to a long fatty amine (16-18 carbon atoms) and show a preference for anionic lipid membranes enriched in phosphatidylglycerol (PG), which excludes electrostatic interactions as the main driving force for DICAM action.
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