Results 91 to 100 of about 495,836 (314)

Rotating Magnetic Fields Inhibit Mitochondrial Respiration, Promote Oxidative Stress and Produce Loss of Mitochondrial Integrity in Cancer Cells

Frontiers in Oncology, 2021
Electromagnetic fields (EMF) raise intracellular levels of reactive oxygen species (ROS) that can be toxic to cancer cells. Because weak magnetic fields influence spin state pairing in redox-active radical electron pairs, we hypothesize that they disrupt
Martyn A. Sharpe, Martyn A. Sharpe, Martyn A. Sharpe, David S. Baskin, David S. Baskin, David S. Baskin, David S. Baskin, Kumar Pichumani, Kumar Pichumani, Kumar Pichumani, Kumar Pichumani, Omkar B. Ijare, Omkar B. Ijare, Omkar B. Ijare, Santosh A. Helekar, Santosh A. Helekar, Santosh A. Helekar, Santosh A. Helekar   +17 more
doaj   +1 more source

Control of mitochondrial superoxide production by reverse electron transport at complex I

Journal of Biological Chemistry, 2018
The generation of mitochondrial superoxide (O2̇̄) by reverse electron transport (RET) at complex I causes oxidative damage in pathologies such as ischemia reperfusion injury, but also provides the precursor to H2O2 production in physiological ...
Ellen L. Robb, A. Hall, T. Prime, S. Eaton, M. Szibor, C. Viscomi, A. James, M. Murphy   +7 more
semanticscholar   +1 more source

PARP inhibition and pharmacological ascorbate demonstrate synergy in castration‐resistant prostate cancer

Molecular Oncology, EarlyView.
Pharmacologic ascorbate (vitamin C) increases ROS, disrupts cellular metabolism, and induces DNA damage in CRPC cells. These effects sensitize tumors to PARP inhibition, producing synergistic growth suppression with olaparib in vitro and significantly delayed tumor progression in vivo. Pyruvate rescue confirms ROS‐dependent activity.
Nicolas Gordon, Peter T. Gallagher, Orly I. Richter, Neermala Poudel Neupane, Amy C. Mandigo, Jennifer J. McCann, Emanuela Dylgjeri, Irina Vasilevskaya, Christopher McNair, Channing J. Paller, Wm. Kevin Kelly, Karen E. Knudsen, Matthew J. Schiewer, Ayesha A. Shafi   +13 more
wiley   +1 more source

Cytosolic redox components regulate protein homeostasis via additional localisation in the mitochondrial intermembrane space [PDF]

, 2017
Oxidative protein folding is confined to the bacterial periplasm, endoplasmic reticulum and the mitochondrial intermembrane space. Maintaining a redox balance requires the presence of reductive pathways.
Cardenas-Rodriguez, Mauricio, Tokatlidis, Konstantinos   +1 more
core   +1 more source

Arabidopsis PPR40 Connects Abiotic Stress Responses to Mitochondrial Electron Transport     [PDF]

Plant Physiology, 2008
Abstract Oxidative respiration produces adenosine triphosphate through the mitochondrial electron transport system controlling the energy supply of plant cells. Here we describe a mitochondrial pentatricopeptide repeat (PPR) domain protein, PPR40, which provides a signaling link between mitochondrial electron transport and regulation ...
Zsigmond, L., Rigo, G., Szarka, A., Szekely, G., Otvos, K., Darula, Z., Medzihradszky, K., Koncz, C., Koncz, Z., Szabados, L.   +9 more
openaire   +3 more sources

TRAIL‐PEG‐Apt‐PLGA nanosystem as an aptamer‐targeted drug delivery system potential for triple‐negative breast cancer therapy using in vivo mouse model

Molecular Oncology, EarlyView.
Aptamers are used both therapeutically and as targeting agents in cancer treatment. We developed an aptamer‐targeted PLGA–TRAIL nanosystem that exhibited superior therapeutic efficacy in NOD/SCID breast cancer models. This nanosystem represents a novel biotechnological drug candidate for suppressing resistance development in breast cancer.
Gulen Melike Demirbolat, Aslihan Kucuk, Omer Erdogan, Samed Ozer, Bensu Kozan, Tugba Cuceli, Erkan Gumus, Evrim Cevik, Ozge Cevik   +8 more
wiley   +1 more source

Inhibition of mTOR prevents ROS production initiated by ethidium bromide-induced mitochondrial DNA depletion.

Frontiers in Endocrinology, 2014
The regulation of mitochondrial mass and DNA content involves a complex interaction between mitochondrial DNA replication machinery, functional components of the electron transport chain, selective clearance of mitochondria, and nuclear gene expression ...
Timothy eNacarelli, Ashley eAzar, Christian eSell   +2 more
doaj   +1 more source

Chronic heart failure is characterized by altered mitochondrial function and structure in circulating leucocytes [PDF]

, 2018
Oxidative stress is currently viewed as a key factor in the genesis and progression of Heart Failure (HF). The aim of this study was to characterize the mitochondrial changes linked to oxidative stress generation in circulating peripheral blood ...
Coluccia, Roberta, Gallo, Giovanna, Micaloni, Andrea, Pagannone, Erika, Raffa, Salvatore, Ranieri, Danilo, Rubattu, Speranza, Salerno, Gerardo, Scrofani, Cristina, Testa, Marco, Torrisi, Maria Rosaria, Valente, Sabatino, Volpe, Massimo   +12 more
core   +1 more source

Homologous expression and purification of human HAX‐1 for structural studies

FEBS Open Bio, EarlyView.
This research protocol provides detailed instructions for cloning, expressing, and purifying large quantities of the intrinsically disordered human HAX‐1 protein, N‐terminally fused to a cleavable superfolder GFP, from mammalian cells. HAX‐1 is predicted to undergo posttranslational modifications and to interact with membranes, various cellular ...
Mariana Grieben
wiley   +1 more source

Coming together to define membrane contact sites. [PDF]

, 2019
Close proximities between organelles have been described for decades. However, only recently a specific field dealing with organelle communication at membrane contact sites has gained wide acceptance, attracting scientists from multiple areas of cell ...
De Matteis, Maria Antonietta, Emr, Scott, Giordano, Francesca, Hajnóczky, György, Kornmann, Benoît, Lackner, Laura L., Levine, Tim P., Pellegrini, Luca, Reinisch, Karin, Rizzuto, Rosario, Schuldiner, Maya, Scorrano, Luca, Simmen, Thomas, Stenmark, Harald, Ungermann, Christian   +14 more
core   +7 more sources