[HTML][HTML] Vesicle cholesterol controls exocytotic fusion pore

B Rituper, A Guček, M Lisjak, U Gorska, A Šakanović… - Cell Calcium, 2022 - Elsevier
In some lysosomal storage diseases (LSD) cholesterol accumulates in vesicles. Whether
increased vesicle cholesterol affects vesicle fusion with the plasmalemma, where the fusion …

Lysosomal fusion and SNARE function are impaired by cholesterol accumulation in lysosomal storage disorders

A Fraldi, F Annunziata, A Lombardi, HJ Kaiser… - The EMBO …, 2010 - embopress.org
The function of lysosomes relies on the ability of the lysosomal membrane to fuse with
several target membranes in the cell. It is known that in lysosomal storage disorders (LSDs) …

[PDF][PDF] Cholesterol stabilizes recombinant exocytic fusion pores by altering membrane bending rigidity

L Wu, KC Courtney, ER Chapman - Biophysical Journal, 2021 - cell.com
SNARE-mediated membrane fusion proceeds via the formation of a fusion pore. This
intermediate structure is highly dynamic and can flicker between open and closed states. In …

[HTML][HTML] Secretory vesicle cholesterol: Correlating lipid domain organization and Ca2+ triggered fusion

M Mahadeo, KL Furber, S Lam, JR Coorssen… - … et Biophysica Acta (BBA …, 2015 - Elsevier
Membrane organization has received substantial research interest since the degree of
ordering in membrane regions is relevant in many biological processes. Here we relate the …

Cholesterol and regulated exocytosis: a requirement for unitary exocytotic events

B Rituper, A Flašker, A Guček, HH Chowdhury, R Zorec - Cell calcium, 2012 - Elsevier
Since the 1970s, much effort was been expended researching mechanisms of regulated
exocytosis. Early work focused mainly on the role of proteins. Most notably the discovery of …

Cholesterol facilitates the native mechanism of Ca2+-triggered membrane fusion

MA Churchward, T Rogasevskaia… - Journal of cell …, 2005 - journals.biologists.com
The process of regulated exocytosis is defined by the Ca2+-triggered fusion of two apposed
membranes, enabling the release of vesicular contents. This fusion step involves a number …

Influence of cholesterol on cellular signaling and fusion pore kinetics

A Tse, AK Lee, L Yan, FW Tse - Journal of Molecular Neuroscience, 2012 - Springer
Cholesterol is an important lipid component of cellular membranes. Recent studies have
shown that changes in cellular cholesterol level can affect cellular functions. Here, we …

Requirement of Cholesterol for Calcium‐Dependent Vesicle Fusion by Strengthening Synaptotagmin‐1‐Induced Membrane Bending

HY Ali Moussa, KC Shin, J Ponraj, SJ Kim… - Advanced …, 2023 - Wiley Online Library
Cholesterol is essential for neuronal activity and function. Cholesterol depletion in the
plasma membrane impairs synaptic transmission. However, the molecular mechanisms by …

[PDF][PDF] The exocytotic fusion pore modeled as a lipidic pore

C Nanavati, VS Markin, AF Oberhauser… - Biophysical journal, 1992 - cell.com
Freeze-fracture electron micrographs from degranulating cells show that the lumen of the
secretory granule is connected to the extracellular compartment via large (20 to 150 nm …

Sphingomyelin-enriched microdomains define the efficiency of native Ca2+-triggered membrane fusion

T Rogasevskaia, JR Coorssen - Journal of cell science, 2006 - journals.biologists.com
Membrane microdomains orrafts' are suggested to act as regulators of the exocytotic
process and also appear to be the sites of Ca2+-triggered membrane fusion. Microdomains …