Herein, we report a novel hexapeptide, derived from activity dependent neuroprotective protein (ADNP), that spontaneously self-assembles to form antiparallel β-sheet structure and produces nanovesicles under physiological conditions. This peptide not only strongly binds with β-tubulin in the taxol binding site but also binds with the microtubule lattice in vitro as well as in intracellular microtubule networks. Interestingly, it shows inhibition of amyloid fibril formation upon co-incubation with Aβ peptide following an interesting mechanistic pathway and excellent neuroprotection in PC12 cells treated with anti-nerve growth factor (NGF). The potential of this hexapeptide opens up a new paradigm in design and development of novel therapeutics for AD.

Download full-text PDF

Source
http://dx.doi.org/10.1021/acschemneuro.5b00149DOI Listing

Publication Analysis

Top Keywords

novel hexapeptide
8
hexapeptide interacts
4
interacts tubulin
4
tubulin microtubules
4
microtubules inhibits
4
inhibits aβ
4
aβ fibrillation
4
fibrillation neuroprotection
4
neuroprotection report
4
report novel
4

Similar Publications

Intrinsic PD-L1 Degradation Induced by a Novel Self-Assembling Hexapeptide for Enhanced Cancer Immunotherapy.

Adv Sci (Weinh)

November 2024

The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China.

Programmed death-ligand 1 (PD-L1) is a critical immune checkpoint protein that facilitates tumor immune evasion. While antibody-based PD-1/PD-L1 inhibitors have shown promise, their limitations necessitate the development of alternative therapeutic strategies. This work addresses these challenges by developing a hexapeptide, KFM (Lys-Phe-Met-Phe-Met-Lys), capable of both directly downregulating PD-L1 and self-assembling into a ROS-responsive supramolecular hydrogel.

View Article and Find Full Text PDF

Novel scaffolds for broad-spectrum antibiotics are rare and in strong demand because of the increase in antimicrobial resistance. The cystobactamids, discovered from myxobacterial sources, have a unique hexapeptidic scaffold with five arylamides and possess potent, resistance-breaking properties. This study investigates the role of the central D-ring pharmacophore in cystobactamids, a para-aminobenzoic acid (PABA) moiety that is additionally substituted by hydroxy and isopropoxy functions.

View Article and Find Full Text PDF

The formation of neurofibrillary tangles (NFTs), composed of tau protein aggregates, is a hallmark of neurodegenerative diseases known as tauopathies, including Alzheimer's disease (AD). NFTs consist of paired helical filaments (PHFs) of tau protein with a dominant β-sheet secondary structure. Within these PHFs, the PHF6 hexapeptide (Val-Gln-Ile-Val-Tyr-Lys) has been commonly highlighted as a key site for tau protein nucleation.

View Article and Find Full Text PDF

Evaluation of the electrochemical response of aromatic peptides for biodetection of dopamine.

J Colloid Interface Sci

February 2025

Departament d'Enginyeria Química and Barcelona Research Center in Multiscale Science and Engineering, EEBE, Universitat Politècnica de Catalunya, C/ Eduard Maristany, 10-14, 08019 Barcelona, Spain; Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, 08028 Barcelona Spain. Electronic address:

Biologically inspired aromatic peptide-based materials are gaining increasing interest as novel charge transport materials for bioelectronics due to their remarkable electrical response and inherent biocompatibility. In this work, the electrochemical response of ten aromatic amino acids and eleven aromatic peptides has been evaluated to assess the potential of incorporating peptides into electrochemical sensors not as biorecognition elements but as biocompatible electronic materials. While the electrochemical response of amino acids is null in all cases, the hexapeptide of phenylalanine (Phe) capped with eight polyethylene glycol units at the N-terminus and, especially, the cyclic dipeptide formed by two dehydro-phenylalanine residues (cyclo(ΔPhe)), which organize in fibrillary self-assembled structures of nano- and submicrometric size, respectively, are the most electroactive peptides.

View Article and Find Full Text PDF

Coagulation factor XIa (FXIa) is associated with a low risk of bleeding and has been identified as an effective and safe target for the development of novel anticoagulant drugs. In this study, we established an ultrasensitive competitive dual-enzyme cascade signal amplification method for the quantitative analysis and screening of FXIa inhibitors. Due to the specific recognition of FXIa's active site by the aptamer AptE40, the AptE40-QDs-EK recognition probe modified with enterokinase (EK) and the aptamer AptE40, was attached to the MNPs-FXIa capture probe.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!