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Stephen MacDonald et al.
International journal of laboratory hematology (2019-11-21)
There is an unmet need to characterize the diagnosis and management of patients with an unclassified bleeding disorder (UBD). Retrospective review of registered patients with UBD at our centre. Assessment including rotational thromboelastometry (ROTEM) and thrombin generation (TG) were used.
Erdem Karatekin et al.
Nature protocols, 7(5), 903-920 (2012-04-21)
Many biological processes rely on membrane fusion, and therefore assays to study its mechanisms are necessary. Here we report an assay with sensitivity to single-vesicle, and even to single-molecule events using fluorescently labeled vesicle-associated v-SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein
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
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
A single vesicle-vesicle fusion assay for in vitro studies of SNAREs and accessory proteins
Diao J, et al.
Nature Protocols, 7(5), 921-921 (2012)
Anna Sundborger et al.
Journal of cell science, 124(Pt 1), 133-143 (2010-12-22)
Clathrin-mediated vesicle recycling in synapses is maintained by a unique set of endocytic proteins and interactions. We show that endophilin localizes in the vesicle pool at rest and in spirals at the necks of clathrin-coated pits (CCPs) during activity in
Oleksandr Kolyvushko et al.
Pathogens (Basel, Switzerland), 9(5) (2020-05-14)
Exposure of phosphatidylserine (PS) in the outer leaflet of the plasma membrane is induced by infection with several members of the Alphaherpesvirinae subfamily. There is evidence that PS is used by the equine herpesvirus type 1 (EHV-1) during entry, but
Naomi Benne et al.
Advanced healthcare materials, 9(10), e2000043-e2000043 (2020-04-25)
Atherosclerosis is characterized by the retention of lipids in foam cells in the arterial intima. The liver X receptor (LXR) agonist GW3965 is a promising therapeutic compound, since it induces reverse cholesterol transport in foam cells. However, hepatic LXR activation
Jihong Bai et al.
Nature structural & molecular biology, 11(1), 36-44 (2004-01-14)
Synaptotagmin-1 (syt), the putative Ca2+ sensor for exocytosis, is anchored to the membrane of secretory organelles. Its cytoplasmic domain is composed of two Ca2+-sensing modules, C2A and C2B. Syt binds phosphatidylinositol 4,5-bisphosphate (PIP2), a plasma membrane lipid with an essential
Yi-Chih Lin et al.
Nature communications, 11(1), 230-230 (2020-01-15)
Annexins are abundant cytoplasmic proteins, which bind to membranes that expose negatively charged phospholipids in a Ca2+-dependent manner. During cell injuries, the entry of extracellular Ca2+ activates the annexin membrane-binding ability, subsequently initiating membrane repair processes. However, the mechanistic action of
Max Piffoux et al.
ACS nano, 12(7), 6830-6842 (2018-07-06)
Extracellular vesicles (EVs) are recognized as nature's own carriers to transport macromolecules throughout the body. Hijacking this endogenous communication system represents an attractive strategy for advanced drug delivery. However, efficient and reproducible loading of EVs with therapeutic or imaging agents
Use of the supported membrane tube assay system for real time analysis of membrane fission reactions
Dar S, et al.
Nature Protocols, 12(2), 390-390 (2017)
Armando Tripodi et al.
Thrombosis research, 185, 96-101 (2019-12-02)
Preterm newborns are considered at risk of acquired coagulopathy and are often prophylactically infused with fresh frozen plasma (FFP) even in the absence of bleeding. To assess the coagulation asset of preterm neonates and the biological plausibility of such infusions
Mohammad Maoyafikuddin et al.
Chemistry and physics of lipids, 226, 104834-104834 (2019-11-30)
Synthesis of giant unilamellar vesicles (GUVs) of charged and uncharged lipids at physiological salt concentration is presented using the starch hydrogel method as an example of the gel assisted synthesis method. The swelling of the gel is assisted by the
Haruka Yamada et al.
The FEBS journal, 287(11), 2212-2234 (2019-11-14)
Tracking the localization and dynamics of the intracellular bioactive lipid phosphatidic acid (PA) is important for understanding diverse biological phenomena. Although several PA sensors have been developed, better ones are still needed for comprehensive PA detection in cells. We recently
Lei Li et al.
Langmuir : the ACS journal of surfaces and colloids, 36(21), 5944-5953 (2020-05-12)
Activation of Raf kinases by the membrane-anchored protein K-Ras4B is a key step of cellular signal regulation. As a predominant variant of the Ras family, K-Ras4B has been considered to be a major drug target in cancer therapy. Therefore, an
Shadai Salazar Vazquez et al.
Biochimie, 170, 26-35 (2019-12-16)
Type 2 diabetes mellitus is a disease characterized by the formation of amyloid fibrillar deposits consisting mainly in human islet amyloid polypeptide (hIAPP), a peptide co-produced and co-secreted with insulin. hIAPP and insulin are synthesized by pancreatic β cells initially
Yasunori Saheki et al.
Nature cell biology, 18(5), 504-515 (2016-04-12)
Acute metabolic changes in plasma membrane (PM) lipids, such as those mediating signalling reactions, are rapidly compensated by homeostatic responses whose molecular basis is poorly understood. Here we show that the extended synaptotagmins (E-Syts), endoplasmic reticulum (ER) proteins that function
Debasis Das et al.
Nature communications, 11(1), 231-231 (2020-01-15)
The opening of a fusion pore during exocytosis creates the first aqueous connection between the lumen of a vesicle and the extracellular space. Soluble N-ethylmaleimide-sensitive factor attachment protein receptors (SNAREs) mediate the formation of these dynamic structures, and their kinetic
Hanna Brzeska et al.
The Journal of biological chemistry, 283(46), 32014-32023 (2008-09-06)
The tail of Acanthamoeba myosin IC (AMIC) has a basic region (BR), which contains a putative pleckstrin homology (PH) domain, followed by two Gly/Pro/Ala (GPA)-rich regions separated by a Src homology 3 (SH3) domain. Cryoelectron microscopy had shown that the
Sophia C Goodchild et al.
PloS one, 9(8), e104492-e104492 (2014-08-08)
Although the molecular mechanisms underlying the pathology of amyloidoses are not well understood, the interaction between amyloid proteins and cell membranes is thought to play a role in several amyloid diseases. Amyloid fibrils of β2-microglobulin (β2m), associated with dialysis-related amyloidosis
Takuhiro Otosu et al.
Physical chemistry chemical physics : PCCP, 22(3), 1242-1249 (2019-12-19)
A supported lipid bilayer (SLB) is now an indispensable tool to analyze the dynamical properties of biomembranes. However, the effect of a solid support on the leaflet-specific lipid dynamics in a SLB remains elusive, which hampers the further application of
Rashik Ahmed et al.
Chemical science, 10(24), 6072-6082 (2019-07-31)
Soluble amyloid beta assemblies (Aβ n
Michael Margolis et al.
Biochimie, 108, 133-139 (2014-12-03)
Obesity, an established risk factor for breast cancer (BC), is associated with systemic inflammation. The breast contains adipose tissue (bAT), yet whether it plays a role in BC progression in obese females is being intensively studied. There is scarce knowledge
Non Miyata et al.
The Journal of cell biology, 214(1), 77-88 (2016-06-30)
Phosphatidylethanolamine (PE) is an essential phospholipid for mitochondrial functions and is synthesized mainly by phosphatidylserine (PS) decarboxylase at the mitochondrial inner membrane. In Saccharomyces cerevisiae, PS is synthesized in the endoplasmic reticulum (ER), such that mitochondrial PE synthesis requires PS
Takao Hanada et al.
The Journal of biological chemistry, 282(52), 37298-37302 (2007-11-08)
Autophagy is a bulk degradation process in eukaryotic cells; autophagosomes enclose cytoplasmic components for degradation in the lysosome/vacuole. Autophagosome formation requires two ubiquitin-like conjugation systems, the Atg12 and Atg8 systems, which are tightly associated with expansion of autophagosomal membrane. Previous
Chiho Kataoka-Hamai et al.
Langmuir : the ACS journal of surfaces and colloids, 35(49), 16136-16145 (2019-11-08)
Phospholipid monolayers at oil-water interfaces are often obtained via vesicle adsorption. However, the interaction mechanisms of vesicles with these oil-water interfaces remain unclear. Herein, we studied the adsorption of giant unilamellar vesicles (GUVs) of approximately 2-5 μm diameter onto silicone
Phosphoserine imprinted nanosensor for detection of Cancer Antigen 125
Buyuktiryaki S, et al.
Talanta, 167, 172-180 (2017)
Peter J Chung et al.
Langmuir : the ACS journal of surfaces and colloids, 34(43), 13000-13005 (2018-10-12)
Spherical nanoparticle-supported lipid bilayers (SSLBs) combine precision nanoparticle engineering with biocompatible interfaces for various applications, ranging from drug delivery platforms to structural probes for membrane proteins. Although the bulk, spontaneous assembly of vesicles and larger silica nanoparticles (>100 nm) robustly
Hongmei Bi et al.
Langmuir : the ACS journal of surfaces and colloids, 34(32), 9561-9571 (2018-07-22)
The nanoscale organization and dynamics of lipid molecules in self-assembled membranes is central to the biological function of cells and in the technological development of synthetic lipid structures as well as in devices such as biosensors. Here, we explore the
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