Results 51 to 60 of about 318,213 (301)

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

FEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

Glutamine Starvation Affects Cell Cycle, Oxidative Homeostasis and Metabolism in Colorectal Cancer Cells

Antioxidants, 2023
Cancer cells adjust their metabolism to meet energy demands. In particular, glutamine addiction represents a distinctive feature of several types of tumors, including colorectal cancer.
Martina Spada, Cristina Piras, Giulia Diana, Vera Piera Leoni, Daniela Virginia Frau, Gabriele Serreli, Gabriella Simbula, Roberto Loi, Antonio Noto, Federica Murgia, Paola Caria, Luigi Atzori   +11 more
doaj   +1 more source

Modeling cancer metabolism on a genome scale [PDF]

, 2015
Cancer cells have fundamentally altered cellular metabolism that is associated with their tumorigenicity and malignancy. In addition to the widely studied Warburg effect, several new key metabolic alterations in cancer have been established over the last
Barbara Chaneton, Eyal Gottlieb, Eytan Ruppin, Keren Yizhak, Kiuru M, Li L, Lobo C, Som P, Vazquez‐Martin A   +8 more
core   +1 more source

Glutamine Metabolism in Sepsis and Infection [PDF]

The Journal of Nutrition, 2001
Severe infection causes marked derangements in the flow of glutamine among organs, and these changes are accompanied by significant alterations in regional cell membrane transport and intracellular glutamine metabolism. Skeletal muscle, the major repository of glutamine, exhibits a twofold increase in glutamine release during infection, which is ...
A M, Karinch, M, Pan, C M, Lin, R, Strange, W W, Souba   +4 more
openaire   +2 more sources

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

Molecular Oncology, Volume 20, Issue 6, Page 1626-1642, June 2026.
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

Asparagine, a critical limiting metabolite during glutamine starvation

Molecular & Cellular Oncology, 2018
A challenge of targeting glutamine metabolism in cancer is that tumor cells develop various strategies to adapt to glutamine limitation. We found that asparagine plays a critical role in supporting protein synthesis during glutamine starvation ...
Jie Jiang, Natalya N Pavlova, Ji Zhang
doaj   +1 more source

Glutamine metabolism in tumor metastasis: Genes, mechanisms and the therapeutic targets

Heliyon, 2023
Cancer cells frequently change their metabolism from aerobic glycolysis to lipid metabolism and amino acid metabolism to adapt to the malignant biological behaviours of infinite proliferation and distant metastasis.
Xugang Zhong, Zeju He, Li Yin, Yong Fan, Yu Tong, Yao Kang, Qing Bi   +6 more
doaj   +1 more source

Is Lactate an Oncometabolite? Evidence Supporting a Role for Lactate in the Regulation of Transcriptional Activity of Cancer-Related Genes in MCF7 Breast Cancer Cells. [PDF]

, 2019
Lactate is a ubiquitous molecule in cancer. In this exploratory study, our aim was to test the hypothesis that lactate could function as an oncometabolite by evaluating whether lactate exposure modifies the expression of oncogenes, or genes encoding ...
Brooks, George A, Julian, Colleen G, Martinez, Janel, Matarazzo, Christopher, San-Millán, Iñigo   +4 more
core   +1 more source

Metabolic Imaging of Glutamine in Cancer [PDF]

Journal of Nuclear Medicine, 2017
Glucose and glutamine are the most abundant nutrients for producing energy and building blocks in normal and tumor cells. Increased glycolysis in tumors, the Warburg Effect, is the basis for 18F-FDG PET imaging. Cancer cells can also be genetically reprogrammed to use glutamine.
Lin, Zhu, Karl, Ploessl, Rong, Zhou, David, Mankoff, Hank F, Kung   +4 more
openaire   +2 more sources

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

Molecular Oncology, Volume 20, Issue 6, Page 1591-1611, June 2026.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee, Byung‐Cheol Han, Gi‐Bang Koo, Jihye Park, Mijin Kwon, Young Bin Park, Jae‐Mun Choi, Seung‐Ho Lee, Sangho Roh   +8 more
wiley   +1 more source