Results 11 to 20 of about 90,774 (312)

Mechanisms of autophagosome formation

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences
The formation of autophagosomes is a pivotal step in autophagy, a lysosomal degradation system that plays a crucial role in maintaining cellular homeostasis.
Yuko FUJIOKA, Nobuo N. NODA
doaj   +3 more sources

Mammalian hybrid pre-autophagosomal structure HyPAS generates autophagosomes

Cell, 2021
The biogenesis of mammalian autophagosomes remains to be fully defined. Here, we used cellular and in vitro membrane fusion analyses to show that autophagosomes are formed from a hitherto unappreciated hybrid membrane compartment. The autophagic precursors emerge through fusion of FIP200 vesicles, derived from the cis-Golgi, with endosomally derived ...
Kumar, Suresh, Javed, Ruheena, Mudd, Michal, Pallikkuth, Sandeep, Lidke, Keith A, Jain, Ashish, Tangavelou, Karthikeyan, Gudmundsson, Sigurdur Runar, Ye, Chunyan, Rusten, Tor Erik, Anonsen, Jan Haug, Lystad, Alf Håkon, Claude-Taupin, Aurore, Simonsen, Anne, Salemi, Michelle, Phinney, Brett, Li, Jing, Guo, Lian-Wang, Bradfute, Steven B, Timmins, Graham S, Eskelinen, Eeva-Liisa, Deretic, Vojo   +21 more
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Autophagosome-Lysosome Fusion

Journal of Molecular Biology, 2020
Macroautophagy is a conserved catabolic process observed in all eukaryotic cells, during which selected cellular components are transported to and broken down within lysosomes. The process starts with the capture of unnecessary material into autophagosomes, which is followed by autophagosome-lysosome fusion to generate autolysosomes that degrade the ...
Lőrincz, Péter, Juhász, Gábor
openaire   +4 more sources

Measuring autophagosome flux [PDF]

Autophagy, 2018
Macroautophagy/autophagy is a proteolytic pathway that is involved in both bulk degradation of cytoplasmic proteins as well as in selective degradation of cytoplasmic organelles. Autophagic flux is often defined as a measure of autophagic degradation activity, and many techniques exist to assess autophagic flux. Although these techniques have generated
Andre du Toit, Jan-Hendrik S. Hofmeyr, Thomas J. Gniadek, Ben Loos   +3 more
openaire   +2 more sources

The EmERgence of Autophagosomes [PDF]

Developmental Cell, 2009
Autophagosomes are large double-membrane vesicles that enclose cytoplasmic components targeting them for degradation. Two recent reports reveal that phagophores, the autophagosome precursors, are surrounded by and connected to rough endoplasmic reticulum (ER) membranes.
Reggiori, Fulvio, Tooze, Sharon A
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Genetic screen in Drosophila muscle identifies autophagy-mediated T-tubule remodeling and a Rab2 role in autophagy. [PDF]

, 2017
Transverse (T)-tubules make-up a specialized network of tubulated muscle cell membranes involved in excitation-contraction coupling for power of contraction. Little is known about how T-tubules maintain highly organized structures and contacts throughout
Fujita, Naonobu, Fukuda, Mitsunori, Groulx, Jean-Francois, Huang, Wilson, Jean, Steve, Kiger, Amy A, Koyama-Honda, Ikuko, Kuchitsu, Yoshihiko, Lin, Tzu-Han, Mizushima, Noboru, Nguyen, Jen   +10 more
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VCP-dependent muscle degeneration is linked to defects in a dynamic tubular lysosomal network in vivo. [PDF]

, 2015
Lysosomes are classically viewed as vesicular structures to which cargos are delivered for degradation. Here, we identify a network of dynamic, tubular lysosomes that extends throughout Drosophila muscle, in vivo. Live imaging reveals that autophagosomes
Davis, Graeme W, Hauswirth, Anna G, Johnson, Alyssa E, Shu, Huidy, Tong, Amy   +4 more
core   +3 more sources

ATPase-regulated autophagosome biogenesis

Autophagy, 2023
Omega-shaped domains of the endoplasmic reticulum, known as omegasomes, have been suggested to contribute to autophagosome biogenesis, although their exact function is not known. Omegasomes are characterized by the presence of the double FYVE domain containing protein ZFYVE1/DFCP1, but it has remained a paradox that depletion of ZFYVE1 does not prevent
Nähse, Viola, Schink, Kay O., Stenmark, Harald   +2 more
openaire   +3 more sources

Autophagy induction regulates influenza virus replication in a time-dependent manner [PDF]

, 2017
Autophagy plays a key role in host defence responses against microbial infections by promoting degradation of pathogens and participating in acquired immunity.
Abdoli, Asghar, Bamdad, Taravat, Feizi, Amir, Feizi, Neda, Fotouhi, Fatemeh, Jamali, Abbas, Mehrbod, Parvaneh, Nasrollahi Nargesabad, Reza, Ollah Jazaeri, Ehsan, Romani, Bizhan, Saleh, Maryam, Shokouhi Targhi, Hadiseh, Soleimanjahi, Hoorieh   +12 more
core   +1 more source

Evidence for the involvement of lipid rafts localized at the ER-mitochondria associated membranes in autophagosome formation [PDF]

, 2016
Mitochondria-associated membranes (MAMs) are subdomains of the endoplasmic reticulum (ER) that interact with mitochondria. This membrane scrambling between ER and mitochondria appears to play a critical role in the earliest steps of autophagy.
Faggioni, Alberto, Gambardella, Lucrezia, Garofalo, Tina, Malorni, Walter, Manganelli, Valeria, Marconi, Matteo, Matarrese, Paola, Misasi, Roberta, Sorice, Maurizio, Tinari, Antonella   +9 more
core   +2 more sources