Results 71 to 80 of about 210,348 (285)

Rate-limiting Step Preceding Cytochrome c Release in Cells Primed for Fas-mediated Apoptosis Revealed by Analysis of Cellular Mosaicism of Respiratory Changes [PDF]

, 2001
In the present work, Jurkat cells undergoing anti-Fas antibody (anti-Fas)-triggered apoptosis exhibited in increasing proportion a massive release of cytochrome c from mitochondria, as revealed by double-labeling confocal immunofluorescence microscopy ...
Attardi, Giuseppe, Hájek, Petr, Villani, Gaetano   +2 more
core  

Exploiting metabolic adaptations to overcome dabrafenib treatment resistance in melanoma cells

Molecular Oncology, EarlyView.
We show that dabrafenib‐resistant melanoma cells undergo mitochondrial remodeling, leading to elevated respiration and ROS production balanced by stronger antioxidant defenses. This altered redox state promotes survival despite mitochondrial damage but renders resistant cells highly vulnerable to ROS‐inducing compounds such as PEITC, highlighting redox
Silvia Eller, Susanne Ebner, Carmen Haselrieder, Julia K. Günther, Astrid Drasche, Sophie Strich, Chiara Volani, Andrea Medici, Aleksandar Nikolajevic, Alex Deltedesco, Johannes E. Sigmund, Michael J. Blumer, Martin Hermann, Johanna Vanacker, Gerald Brandacher, Eduard Stefan, Omar Torres‐Quesada, Jakob Troppmair   +17 more
wiley   +1 more source

Correlation of mitochondrial respiration in platelets, peripheral blood mononuclear cells and muscle fibers

Heliyon
There is a growing interest for the possibility of using peripheral blood cells (including platelets) as markers for mitochondrial function in less accessible tissues.
Emil Westerlund, Sigurður E. Marelsson, Michael Karlsson, Fredrik Sjövall, Imen Chamkha, Eleonor Åsander Frostner, Johan Lundgren, Vineta Fellman, Erik A. Eklund, Katarina Steding-Ehrenborg, Niklas Darin, Gesine Paul, Magnus J. Hansson, Johannes K. Ehinger, Eskil Elmér   +14 more
doaj   +1 more source

Extra-matrix Mg\u3csup\u3e2+\u3c/sup\u3e Limits Ca\u3csup\u3e2+\u3c/sup\u3e Uptake and Modulates Ca\u3csup\u3e2+\u3c/sup\u3e Uptake-independent Respiration and Redox State in Cardiac Isolated Mitochondria [PDF]

, 2013
Cardiac mitochondrial matrix (m) free Ca2+ ([Ca2+]m) increases primarily by Ca2+ uptake through the Ca2+ uniporter (CU). Ca2+ uptake via the CU is attenuated by extra-matrix (e) Mg2+ ([Mg2+]e).
Blomeyer, Christoph A., Boelens, Age D., Camara, Amadou K.S., Dash, Ranjan K., Pradhan, Ranjan K., Stowe, David F.   +5 more
core   +1 more source

The mycotoxin phomoxanthone A disturbs the form and function of the inner mitochondrial membrane. [PDF]

, 2018
Mitochondria are cellular organelles with crucial functions in the generation and distribution of ATP, the buffering of cytosolic Ca2+ and the initiation of apoptosis. Compounds that interfere with these functions are termed mitochondrial toxins, many of
Anand, Ruchika, Barbian, Andreas, Berleth, Niklas, Borchardt, Andrea, Böhler, Philip, Böhler, Philip, Deitersen, Jana, Frank, Marian, García-Sáez, Ana J, Itskanov, Samuel, Kondadi, Arun Kumar, Luyten, Tomas, Niemann, Hendrik, Parys, Jan B, Peña-Blanco, Aida, Proksch, Peter, Reichert, Andreas S, Schlütermann, David, Stork, Björn, Stuhldreier, Fabian, van der Bliek, Alexander M, Wallot-Hieke, Nora, Weidtkamp-Peters, Stefanie, Wesbuer, Elisabeth, Wesselborg, Sebastian, Wu, Wenxian   +25 more
core   +2 more sources

ATF4‐mediated stress response as a therapeutic vulnerability in chordoma

Molecular Oncology, EarlyView.
We screened 5 chordoma cell lines against 100+ inhibitors of epigenetic and metabolic pathways and kinases and identified halofuginone, a tRNA synthetase inhibitor. Mechanistically halofuginone induces an integrated stress response, with eIF2alpha phosphorylation, activation of ATF4 and its target genes CHOP, ASNS, INHBE leading to cell death ...
Lucia Cottone, James Dunford, Eleanor Calcutt, Vicki Gamble, Filiz Senbabaoglu Aksu, Lorena Ligammari, Georgina Wherry, Giorgia Gaeta, John C. Christianson, Adrienne M. Flanagan, Udo Oppermann, Adam P. Cribbs   +11 more
wiley   +1 more source

Depletion of RIPK3 or MLKL blocks TNF-driven necroptosis and switches towards a delayed RIPK1 kinase-dependent apoptosis [PDF]

, 2014
In human cells, the RIPK1-RIPK3-MLKL-PGAM5-Drp1 axis drives tumor necrosis factor (TNF)-induced necroptosis through mitochondrial fission, but whether this pathway is conserved among mammals is not known. To answer this question, we analyzed the presence
Baekelandt, V, Bertrand, Mathieu, Bruggeman, Inge, Dondelinger, Yves, Gonçalves, Amanda, Goossens, Vera, Grootjans, Sasker, Remijsen, Quinten, Roelandt, Ria, Takahashi, Nozomi, Van den Haute, C, Vanden Berghe, Tom, Vandenabeele, Peter, Vanlangenakker, Nele   +13 more
core   +3 more sources

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Recombinant Mitochondrial Transcription Factor A with N-terminal Mitochondrial Transduction Domain Increases Respiration and Mitochondrial Gene Expression in G11778A Leber's Hereditary Optic Neuropathy Cybrid Cells [PDF]

, 2008
Diseases involving mitochondrial defects usually manifest themselves in high-energy, post-mitotic tissues such as brain, retina, skeletal and cardiac muscle and frequently cause deficiencies in mitochondrial bioenergetics.
Caitlin K. Quigley, Francisco R. Portell, James P. Bennett, Lisa D. Dunahm, Ravindar R. Thomas, Shilpa Iyer   +5 more
core   +1 more source

SIRT4 positively regulates autophagy via ULK1, but independently of HDAC6 and OPA1

FEBS Open Bio, EarlyView.
Cells expressing SIRT4 (H161Y), a catalytically inactive mutant of the sirtuin SIRT4, fail to upregulate LC3B‐II and exhibit a reduced autophagic flux under stress conditions. Interestingly, SIRT4(H161Y) promotes phosphorylation of ULK1 at S638 and S758 that are associated with inhibition of autophagy initiation.
Isabell Lehmkuhl, Khawar Amin, Lydia Gabriel, Nils Hampel, Afshin Iram, Julia Hesse, Constanze Wiek, Jasmin Thuy Vy Nguyen, Helmut Hanenberg, Jürgen Scheller, M. Reza Ahmadian, Björn Stork, Doreen M. Floss, Roland P. Piekorz   +13 more
wiley   +1 more source