Ovalbumin-derived peptide, VLVNAIVFKGL, demonstrated self-assembling and gelation properties. However, the extent of self-assembly via solvent-switching and the bioactive potential of the ordered peptide aggregates is unknown. In silico analysis using AGGRESCAN, TANGO, ANuPP, and GAP predicted a high propensity to self-assemble into amyloid-like aggregates. Thioflavin T fluorescence assay confirmed enhanced self-assembly at low solvent concentrations (0.03-5% DMSO) and increasing peptide concentration (4-400 μM). Transmission electron microscopy showed enhanced formation of interconnected fibrillar networks at 400 μM. Mechanical properties assessed via rheology confirmed the hydrogelation of the fibrillar networks with high fibrillar stability in simulated gastrointestinal fluids. Oxidative stress assays using showed a 21.48 ± 3.37% reduction in juglone-induced reactive oxygen species production by the hydrogel. In silico analysis further predicted the cell-penetrating and nontoxic characteristics of the peptide, highlighting the potential biocompatibility. Taken together, these findings support the development of VLVNAIVFKGL as an antioxidant peptide hydrogel for edible applications.
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http://dx.doi.org/10.1021/acs.jafc.4c11287 | DOI Listing |
Adv Healthc Mater
March 2025
Department of Orthopaedics, Key Laboratory of Structural Malformations in Children of Zhejiang Province, Key Laboratory of Orthopaedics of Zhejiang Province, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China.
Intervertebral disc degeneration (IVDD) is a major cause of low back pain, where oxidative stress and mitochondrial dysfunction are key contributors. Additionally, ferroptosis, an iron-dependent form of cell death, is identified as a critical mechanism in IVDD pathogenesis. Herein, the therapeutic potential of gallic acid (GA)-derived PGA-Cu nanoparticles, enhanced with functional octapeptide (Cys-Lys-His-Gly-d-Arg-d-Tyr-Lys-Phe, SS08) to build the mitochondria-targeted nanoparticles (PGA-Cu@SS08), and embedded within a hydrogel matrix to form a nanocomposite hydrogel, is explored.
View Article and Find Full Text PDFColloids Surf B Biointerfaces
March 2025
Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C 8000, Denmark. Electronic address:
Hydrogel biomaterials have been extensively explored for applications in medicine, materials science, and the development of functionalized materials. Traditionally, hydrogels were produced using simple polymers, but advancements over recent decades have enabled the use of biological materials such as proteins, peptides, polysaccharides, and even amyloid fibrils. Among these, amyloid-based hydrogels have demonstrated unique advantages, including enhanced cell adhesion and differentiation.
View Article and Find Full Text PDFACS Appl Mater Interfaces
March 2025
School of Pharmacy, Queen's University Belfast, BelfastBT9 7BL, U.K.
Enfuvirtide, the inaugural biomimetic fusion inhibitor of HIV-1, has exhibited remarkable antiviral efficacy when administered in conjunction with an optimized antiretroviral regimen. Nonetheless, the high incidence (98%) of injection site reactions associated with twice-daily subcutaneous administration severely compromises patient adherence and long-term therapeutic outcomes. This study proposes hydrogel-forming microneedles (MNs) as a minimally invasive and painless modality for the transdermal delivery of this therapeutic peptide.
View Article and Find Full Text PDFInt J Biol Macromol
March 2025
Department of Orthopedic, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. Electronic address:
Self-repair of articular cartilage defects is a significant challenge that can be addressed using drug-infused hydrogels, which improve injection convenience and provide immediate in situ adhesion. In this study, we developed a hydrogel incorporating Lipo@Kartogenin (KGN) and the cationic functional peptide SKPPGTSS (SKP) linked to aldehyde-based methacrylated hyaluronic acid (AHAMA). The innovative injectable hydrogel responded to visible light, allowing cross-linking under white light (~30 s) and effective adhesion to cartilage tissue.
View Article and Find Full Text PDFJ Transl Med
March 2025
Department of Pharmacy, Yueqing Third People's Hospital, Wenzhou, 325604, People's Republic of China.
Antibiotic resistance is currently one of the most significant threats to global public health and safety. And studies have found that over the next 25 years, 39 million people will die directly and 169 million indirectly due to antibiotic-resistant diseases. Consequently, the development of new types of antimicrobial drugs is urgently needed.
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