Search results for "Giant vesicles"

showing 3 items of 3 documents

Polysialic acid chains exhibit enhanced affinity for ordered regions of membranes.

2018

Polysialic acid (polySia) forms linear chains which are usually attached to the external surface of the plasma membrane mainly through the Neural Cell Adhesion Molecule (NCAM) protein. It is exposed on neural cells, several types of cancer cells, dendritic cells, and egg and sperm cells. There are several lipid raft-related phenomena in which polySia is involved; however the mechanisms of polySia action as well as determinants of its localization in lipid raft microdomains are still unknown, although the majority of NCAM molecules in the liquid-ordered raft membrane fractions of neural cells appear to be polysialylated. Here we investigate the affinity of polySia (both soluble and NCAM-depe…

0301 basic medicineLipid BilayersBiophysicsPolysialic acidBiochemistryGiant vesicles03 medical and health sciencesNeuroblastomaRafts0302 clinical medicineMembrane MicrodomainsCell Line TumorNeuroblastoma cellsFluorescence Resonance Energy TransferHumansLipid raftNeuronsLiposomePolysialic acidChemistryCell MembraneCell BiologyRaftLipidsKinetics030104 developmental biologyMembraneFörster resonance energy transferMicroscopy FluorescenceSolubilityCancer cellLiposomesFRETBiophysicsSialic AcidsNeural cell adhesion molecule030217 neurology & neurosurgeryProtein BindingBiochimica et biophysica acta. Biomembranes
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Natural or synthetic nucleic acids encapsulated in a closed cavity of amphiphiles

2013

In this review some aspects of the interactions of organized structures of amphiphiles with natural or synthetic DNAs are briefly considered. In particular DNAs encapsulated in closed cavities of amphiphiles, specifically giant vesicles and water-in-oil droplets and reverse micelles, are dealt with. Two main applications of giant vesicles are reviewed in detail, namely their use as microreactors where reactions can be followed by optical microscopy on a single vesicle and in synthetic biology as protocell models or as potential semi-synthetic ‘‘living’’ cells. Water-in-oil droplets uses for rapid and relatively low-cost DNA amplification by PCR reaction are described as well as for in vitro…

ProtocellAqueous solutionChemistryGeneral Chemical EngineeringVesicleNanotechnologyGeneral ChemistrymicroreactorsMicellepolynucleotides in water-in-oil dropletsSynthetic biologyDNA model polynucleotides giant vesicles Reverse micellesPolynucleotideAmphiphileBiophysicsNucleic acidmicroreactors; polynucleotides in giant vesicles; polynucleotides in water-in-oil dropletspolynucleotides in giant vesiclesRSC Advances
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TRANSPORTAN 10 INTERACTION WITH GIANT VESICLES: INSERTION EFFECTS AND PORE FORMATION

Transportan 10 (TP10) is a 21 residues peptide that belongs to the family of the antimicrobial and cytolytic or cytotoxic amphipathic peptides. It contains a high proportion of positively charged amino acids (four lysines), no negative charges and the N-terminus that impart it a formal +5 charge at neutral pH.1 This large number of positive charges is an essential feature for the electrostatic interaction of TP10 with microbial and tumoral membranes, which are characherized by a net negative charge and also by a higher fluidity if compared with mammalin ones.2 Here, combining spectroscopic and fluorescence lifetime imaging techniques, we analyse the fate of the multifunctional3-4 TP10 and i…

cell penetrating peptide FLIM giant vesicles transportant 10
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