We report a study on the formation of block liposomes (BLs) and nanotubes from membranes comprised of mixtures of membrane curvature-stabilizing multivalent cationic lipids MVL3(3+) and MVL5(5+) with neutral 1,2-dioleoyl-sn-glycero-3-phosphatidylcholine (DOPC). In conjunction with prior work on MVLBG2(16+), our experiments suggest that BL and nanotube formation is a general phenomenon in membranes containing multivalent lipids, thus enhancing the relevance of BLs for applications such as gene/drug storage and delivery or templating.
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http://dx.doi.org/10.1039/C1SM05481C | DOI Listing |
Food Chem X
January 2025
Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95060, USA.
Total antioxidant capacity (TAC) is an important indicator for assessing the merit of natural plants and foods. Herein, a visual TAC assay is developed based on the oxidase-like activity of nitrogen-doped carbon nanotubes loaded with Fe nanoparticles (FeNPs@NCNT), which is prepared via high-temperature pyrolysis of metal-organic framework precursors and can catalyze the oxidation of colorless -phenylenediamine (OPD) to colored 2,3-diaminophenazine (DAP). The addition of antioxidants (e.
View Article and Find Full Text PDFMaterials (Basel)
January 2025
Institute of Energy and Mechanical Engineering, Satbayev University, 22a Satpaev Str., Almaty 050013, Kazakhstan.
Aluminum-carbon nanotube (Al-CNT) composites represent a cutting-edge class of materials characterized by their exceptional mechanical, thermal, and electrical properties, making them highly promising for aerospace, automotive, electronics, and energy applications. This review systematically examines the impact of various fabrication methods, including conventional powder metallurgy, diffusion and reaction coupling, as well as adhesive and reaction bonding on the microstructure and performance of Al-CNT composites. The analysis emphasizes the critical role of CNT dispersion, interfacial bonding, and the formation of reinforcing phases, such as AlC and AlO, in determining the mechanical strength, wear resistance, corrosion resistance, and thermal stability of these materials.
View Article and Find Full Text PDFCell Rep
January 2025
Institute of Biotechnology, Czech Academy of Sciences, 252 50 Prague-West, Czech Republic; Faculty of Science, Charles University, 128 00 Prague, Czech Republic; School of Pharmacy and Medical Science, Griffith University, Southport, QLD 4222, Australia; 1(st) Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic. Electronic address:
Recent research has shown that mtDNA-deficient cancer cells (ρ cells) acquire mitochondria from tumor stromal cells to restore respiration, facilitating tumor formation. We investigated the role of Miro1, an adaptor protein involved in movement of mitochondria along microtubules, in this phenomenon. Inducible Miro1 knockout (Miro1) mice markedly delayed tumor formation after grafting ρ cancer cells.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Anhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei 230022, China.
A styrene-glycidylmethacrylate-1-allyl-3-vinylimidazole epoxy functionalized ionomer (EFI) was synthesized, and the EFI and carbon nanotubes (CNTs) were co-introduced into poly(lactide)/poly(butylene-adipate-co-terephtalate) (PLA/PBAT) blends to fabricate high performance composites with excellent mechanical properties, fatigue-resistance and dielectric properties. It is revealed that EFI can improve the interaction force between PLA and PBAT by inducing the interfacial crosslink reaction, thereby improving the melt strength of the samples. EFI can also refine the dispersion of CNT in the composites owing to the non-covalent force between EFI and CNT, promote the formation of filler network inside composites, which is demonstrated by DMA and rheological test results.
View Article and Find Full Text PDFMikrochim Acta
January 2025
College of Materials Science and Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Jiangbei New Area, Nanjing, 211816, Jiangsu, China.
A polyethyleneimine (PEI)-assisted simple and efficient one-pot hydrothermal reduction method is reported to prepare high-quality gold nanodendrites (AuNDs) on a carbon nanotube (CNT) sheet. We observed that the prepared AuNDs have a well-defined backbone-multiple branching structure. With the systematical investigation of the growth mechanism, it was found that the bromide (Br) ion concentration has an essential effect on the formation of AuNDs.
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