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Showing 1-30 of 39 results for "840475C" within Papers
Keni Yang et al.
Acta biomaterialia, 106, 314-327 (2020-02-23)
Nano-sized objects such as liposomes are modified by adsorption of biomolecules in biological fluids. The resulting corona critically changes nanoparticle behavior at cellular level. A better control of corona composition could allow to modulate uptake by cells. Within this context
Mohammad Abu Sayem Karal et al.
Chemistry and physics of lipids, 230, 104916-104916 (2020-05-15)
The interaction of anionic magnetite nanoparticles (MNPs) of size 18 nm with negatively charged giant unilamellar vesicles (GUVs) formed from a mixture of neutral dioleoylphosphatidylcholine (DOPC) and negatively charged dioleoylphosphatidylglycerol (DOPG) lipids has been investigated. It has been obtained that
Madhabi Lata Shuma et al.
Biochemistry, 59(18), 1780-1790 (2020-04-15)
The entry of cell-penetrating peptides (CPPs) into live cells and lipid vesicles has been monitored using probe (e.g., fluorescent dye)-labeled CPPs. However, probe labeling may alter the interaction of CPPs with membranes. We have developed a new method to detect
Mariya Chavarha et al.
Biophysical journal, 104(3), 594-603 (2013-02-28)
The hydrophobic surfactant proteins, SP-B and SP-C, greatly accelerate the adsorption of the surfactant lipids to an air/water interface. Previous studies of factors that affect curvature suggest that vesicles may adsorb via a rate-limiting structure with prominent negative curvature, in
Peter J Beltramo et al.
Langmuir : the ACS journal of surfaces and colloids, 34(20), 5880-5888 (2018-05-02)
Capacitance measurements provide unique insights into the thickness, compressibility, and composition of large-area membrane bilayers and are used here in addition to demonstrate the successful incorporation of model ion channels. The simultaneous ability to control the bilayer size, manipulate tension
Md Zahidul Islam et al.
Langmuir : the ACS journal of surfaces and colloids, 33(9), 2433-2443 (2017-02-07)
The translocation of cell-penetrating peptides (CPPs) through plasma membranes of living cells is an important physiological phenomenon in biomembranes. To reveal the mechanism underlying the translocation of a CPP, transportan 10 (TP10), through lipid bilayers, we examined the effects of
Yuki Takechi-Haraya et al.
Langmuir : the ACS journal of surfaces and colloids, 34(26), 7805-7812 (2018-06-06)
It has recently been recognized that the mechanical properties of lipid nanoparticles play an important role during in vitro and in vivo behaviors such as cellular uptake, blood circulation, and biodistribution. However, there have been no quantitative investigations of the
Ming-Tao Lee et al.
Biochemistry, 57(38), 5629-5639 (2018-08-29)
Daptomycin is a phosphatidylglycerol specific, calcium-dependent membrane-active antibiotic that has been approved for the treatment of Gram-positive infections. A recent Bacillus subtilis study found that daptomycin clustered into fluid lipid domains of bacterial membranes and the membrane binding was correlated
Membrane Structure and Dynamics
Cell Biology, 227- 239 (2017)
Anthony G Vecchiarelli et al.
Proceedings of the National Academy of Sciences of the United States of America, 113(11), E1479-E1488 (2016-02-18)
The Escherichia coli Min system self-organizes into a cell-pole to cell-pole oscillator on the membrane to prevent divisions at the cell poles. Reconstituting the Min system on a lipid bilayer has contributed to elucidating the oscillatory mechanism. However, previous in
Md Mamun Or Rashid et al.
Biochimica et biophysica acta. Biomembranes, 1862(10), 183381-183381 (2020-06-07)
The effect of membrane potential on plasma membrane damage generated by antimicrobial peptides (AMPs) is an important, yet poorly characterized, process. Here, we studied the effect of membrane potential (φm) on pore formation by magainin 2 (Mag) in single giant
Naomi Benne et al.
Journal of controlled release : official journal of the Controlled Release Society, 318, 246-255 (2019-12-10)
Regulatory T cells (Tregs) are vital for maintaining a balanced immune response and their dysfunction is often associated with auto-immune disorders. We have previously shown that antigen-loaded anionic liposomes composed of phosphatidylcholine (PC) and phosphatidylglycerol (PG) and cholesterol can induce
Qiuhong Yu et al.
Langmuir : the ACS journal of surfaces and colloids, 34(21), 6183-6193 (2018-05-08)
Protein-mediated endocytosis of membrane is a key event in biological system. The mechanism, however, is still not clear. Using a de novo designed bola-type peptide KKKLLLLLLLLKKK (K3L8K3) as a protein mimic, we studied how it induced giant unilamellar vesicle (GUV)
Tjeerd Pols et al.
The FEBS journal, 288(1), 293-309 (2020-04-20)
In cells, the breakdown of arginine to ornithine and ammonium ion plus carbon dioxide is coupled to the generation of metabolic energy in the form of ATP. The arginine breakdown pathway is minimally composed of arginine deiminase, ornithine transcarbamoylase, carbamate
Stephen A Pearson et al.
Metallomics : integrated biometal science, 12(6), 902-915 (2020-04-28)
Iron-sulfur cluster proteins play key roles in a multitude of physiological processes; including gene expression, nitrogen and oxygen sensing, electron transfer, and DNA repair. Biosynthesis of iron-sulfur clusters occurs in mitochondria on iron-sulfur cluster scaffold proteins in the form of
Eric H Hill et al.
Langmuir : the ACS journal of surfaces and colloids, 34(44), 13252-13262 (2018-10-24)
Lipid vesicles are important biological assemblies, which are critical to biological transport processes, and vesicles prepared in the lab are a workhorse for studies of drug delivery, protein unfolding, biomolecular interactions, compartmentalized chemistry, and stimuli-responsive sensing. The current method of
Dylan Steer et al.
Langmuir : the ACS journal of surfaces and colloids, 34(25), 7561-7574 (2018-05-31)
The hierarchical assembly of lipids, as modulated by composition and environment, plays a significant role in the function of biological membranes and a myriad of diseases. Elevated concentrations of calcium ions and cardiolipin (CL), an anionic tetra-alkyl lipid found in
Li Ma et al.
Biochemistry, 57(31), 4735-4740 (2018-04-06)
It is challenging to assess protein-membrane interactions because of the lack of appropriate tools to detect position changes of single proteins in the ∼4 nm range of biological membranes. We developed an assay recently, termed surface-induced fluorescence attenuation (SIFA). It
Huan Bao et al.
Nature, 554(7691), 260-263 (2018-02-09)
The fusion pore is the first crucial intermediate formed during exocytosis, yet little is known about the mechanisms that determine the size and kinetic properties of these transient structures. Here, we reduced the number of available SNAREs (proteins that mediate
Federico Amadei et al.
Langmuir : the ACS journal of surfaces and colloids, 34(46), 14046-14057 (2018-10-26)
Albeit many studies demonstrated that the accumulation of phospholipids in the intestinal mucosal surfaces is essential for the protection of colon epithelia against pathogenic bacteria, the mechanism of interactions between phospholipids and the surface protein mucin is not well understood.
Xi Zhang et al.
Analytical chemistry, 90(24), 14387-14394 (2018-11-15)
Formation of a protein corona around nanoparticles when immersed into biological fluids is well-known; less studied is the formation of lipid coronas around nanoparticles. In many cases, the identity of a nanoparticle-acquired corona determines nanoparticle fate within a biological system
Mohammad Abu Sayem Karal et al.
Physical review. E, 101(1-1), 012404-012404 (2020-02-20)
The influence of electrostatic conditions (salt concentration of the solution and vesicle surface charge density) on the size distribution of self-assembled giant unilamellar vesicles (GUVs) is considered. The membranes of GUVs are synthesized by a mixture of dioleoylphosphatidylglycerol and dioleoylphosphatidylcholine
Alexandre M Almeida et al.
Langmuir : the ACS journal of surfaces and colloids, 35(51), 16745-16751 (2019-11-21)
The alarming increase in bacterial resistance to antibiotics has demanded new strategies for microbial inactivation, which include photodynamic therapy whose activity relies on the photoreaction damage to the microorganism membrane. Herein, the binding mechanisms of the photosensitizer toluidine blue-O (TBO)
Xiaobo Fan et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 152, 72-84 (2020-05-08)
Decorating the membrane surface of vesicle carriers with proteins for targeted delivery has been achieved mainly by chemical methods. In this study, we report the rational design of a lipid-mimicking peptide for biomembrane decoration without chemical conjugation. A peptide Pm45
Reut Israeli et al.
Biophysical journal, 118(6), 1270-1278 (2020-02-14)
Membrane interactions of amyloidogenic proteins constitute central determinants both in protein aggregation as well as in amyloid cytotoxicity. Most reported studies of amyloid peptide-membrane interactions have employed model membrane systems combined with application of spectroscopy methods or microscopy analysis of
Lipids
Medical Biochemistry, 99- 119 (2017)
Interaction of imidazolium-based lipids with phospholipid bilayer membranes of different complexity.
Steffen Bornemann et al.
Physical chemistry chemical physics : PCCP, 22(17), 9775-9788 (2020-04-28)
In recent years, alkylated imidazolium salts have been shown to affect lipid membranes and exhibit general cytotoxicity as well as significant anti-tumor activity. Here, we examined the interactions of a sterically demanding, biophysically unexplored imidazolium salt, 1,3-bis(2,6-diisopropylphenyl)-4,5-diundecylimidazolium bromide (C11IPr), on
Ling Liu et al.
The Science of the total environment, 734, 139229-139229 (2020-05-26)
The induced membrane damage is a key mechanism for the cytotoxicity of graphene nanosheets (GNSs). In this research, the physical interaction of GNSs on model membranes was investigated using artificial membranes and plasma membrane vesicles. The effects of the GNSs
Ariel Mizrahi et al.
The Journal of biological chemistry, 285(33), 25485-25499 (2010-06-10)
The superoxide-generating NADPH oxidase complex of resting phagocytes includes cytochrome b(559), a membrane-associated heterodimer composed of two subunits (Nox2 and p22(phox)), and four cytosolic proteins (p47(phox), p67(phox), Rac, and p40(phox)). Upon stimulation, the cytosolic components translocate to the membrane, as
In vitro skin penetration enhancement techniques: A combined approach of ethosomes and microneedles.
C Bellefroid et al.
International journal of pharmaceutics, 572, 118793-118793 (2019-11-13)
Dermal administration of different macromolecules, such as nucleic acids, remains a real challenge because of the difficulty of crossing the main skin barrier, the stratum corneum (SC). To overcome this barrier, the use of deformable lipid-based nanovectors were developed to
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