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Alzheimer's disease (AD) is the prime cause of 65-80% of dementia cases and is caused by plaque and tangle deposition in the brain neurons leading to brain cell degeneration. β-secretase (BACE-1) is a key enzyme responsible for depositing extracellular plaques made of β-amyloid protein. Therefore, efforts are being applied to develop novel BACE-1 enzyme inhibitors to halt plaque build-up. In our study, we analyzed some Elenbecestat analogues (a BACE-1 inhibitor currently in clinical trials) using a structure-based drug design and scaffold morphing approach to achieve a superior therapeutic profile, followed by in silico studies, including molecular docking and pharmacokinetics methodologies. Among all the designed compounds, SB306 and SB12 showed good interactions with the catalytic dyad motifs (Asp228 and Asp32) of the BACE-1 enzyme with drug-likeliness properties and a high degree of thermodynamic stability confirmed by the molecular dynamic and stability of the simulated system indicating the inhibitory nature of the SB306 and SB12 on BACE 1.
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http://dx.doi.org/10.3390/molecules28166032 | DOI Listing |
Int J Biol Macromol
September 2025
Department of Biomedical Engineering, IIT Hyderabad, Kandi, Sangareddy, Telangana 502285, India. Electronic address:
While 3D bioprinting has advanced tissue engineering, the creation of complex, self-supporting structures like hollow tubes has complexities that catalyzed the emergence of 4D bioprinting. Our study introduces a novel approach inspired by nature's ability to create dynamic, hollow structures-such as curling leaves that adapt to environmental conditions through moisture absorption and deswelling. We present a cutting-edge 4D bioprinting method that enables the precise, controlled formation of hollow tubes with varying sizes, utilizing functionally modified silk (namely SilMA) (10-20 %) and its composites (prepared with 0.
View Article and Find Full Text PDFAdv Healthc Mater
August 2025
Technische Universität Dresden, University Hospital Carl Gustav Carus and Faculty of Medicine, Centre for Translational Bone, Joint and Soft Tissue Research, Fetscherstraße 74, 01307, Dresden, Germany.
The development of mechanically robust, cell-instructive, and seweable small-diameter (≤ Ø 6 mm) tubular scaffolds remain a major challenge in vascular tissue engineering. Here, a hybrid biofabrication strategy is presented that combines 4D printing of alginate-methylcellulose (AlgMC) hydrogels with melt electrowritten (MEW) poly(ε-caprolactone) (PCL) reinforcement to produce tubular constructs with programmable shape-morphing capacity. The MEW fiber meshes significantly improve mechanical integrity, enabling suturing and perfusion, while preserving the anisotropic swelling behavior required for morphogenesis.
View Article and Find Full Text PDFComput Struct Biotechnol J
June 2025
Tashkent Medical Academy, Tashkent 100109, Uzbekistan.
Dry bulk fractions of osteoconductive granular biopolymers (OGB) are a common choice for addressing jawbone defects. These, in conjunction with an insulating biological membrane, form bioengineered scaffold structures. In the recipient site, the OGB fraction undergoes biotransformation, morphing from a bulk granular fraction into a stable conglomerate.
View Article and Find Full Text PDFJ Biomater Sci Polym Ed
May 2025
State Key Laboratory of Flexible Electronics (LoFE) and Institute of Flexible Electronics (IFE), Xiamen University, Xiamen, China.
4D printing of alginate hydrogels has emerged as a transformative strategy in tissue engineering, enabling the fabrication of stimuli-responsive scaffolds that recapitulate the temporal and spatial complexities of native tissues. Leveraging alginate's tunable crosslinking, biocompatibility, and easy modification, recent research has demonstrated the successful design of constructs capable of programmable shape morphing in response to physiological stimuli. This review highlights recent advances in polymer design, including methacrylated, oxidized, and ligand-functionalized alginate derivatives, and cutting-edge 4D printing technologies such as extrusion-based and photopolymerization-based printing technologies.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
May 2025
Aiiso Yufeng Li Family Department of Chemical and Nano Engineering, University of California, San Diego, La Jolla, CA 92093.
Stimuli-responsive engineered living materials (ELMs) can respond to environmental or biochemical cues and have broad utility in biological sensors and machines, but have traditionally been limited to biocompatible scaffolds. This is because they are typically made by mixing cells into a precursor solution before crosslinking. Here, we demonstrate a diffusion mechanism for incorporating cells of the cyanobacterium sp.
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