Results 71 to 80 of about 53,789 (311)

Pirin Transcriptionally Regulates PLA2G4A To Inhibit Ferroptosis in Colorectal Cancer via Lipid Profile Remodeling

Advanced Science, EarlyView.
This study identifies Pirin (PIR), an iron‐binding protein, as a critical ferroptosis suppressor in colorectal cancer through lipid membrane remodeling. PIR, induced by NRF2 during ferroptotic stress, transcriptionally regulates PLA2G4A to shift cellular lipid composition away from ferroptosis‐permissive polyunsaturated phospholipids.
Wei Shi, Yue Qi Ong, Prativa Majee, Esther SM Wong, Amhed Missael Vargas Velazquez, Kerem Fidan, Pierce Kah‐Hoe Chow, Wai Leong Tam, Ker Kan Tan, Iain Beehuat Tan, Vinay Tergaonkar   +10 more
wiley   +1 more source

PGE2 release is independent of upregulation of Group V phospholipase A2 during long-term stimulation of P388D1 cells with LPS1

Journal of Lipid Research, 2005
P388D1 cells release arachidonic acid (AA) and produce prostaglandin E2 (PGE2) upon long-term stimulation with lipopolysaccharide (LPS). The cytosolic Group IVA (GIVA) phospholipase A2 (PLA2) has been implicated in this pathway.
Ursula A. Kessen, Ralph H. Schaloske, Daren L. Stephens, Karin Killermann Lucas, Edward A. Dennis   +4 more
doaj   +1 more source

Eicosanoid-Activated PPARα Inhibits NFκB-Dependent Bacterial Clearance During Post-Influenza Superinfection

Frontiers in Cellular and Infection Microbiology, 2022
Secondary bacterial infection (superinfection) post influenza is a serious clinical complication often leading to pneumonia and death. Eicosanoids are bioactive lipid mediators that play critical roles in the induction and resolution of inflammation ...
Ronald Lucarelli, Norma Gorrochotegui-Escalante, Jessica Taddeo, Bettina Buttaro, Bettina Buttaro, Joris Beld, Vincent Tam   +6 more
doaj   +1 more source

Replication of Marek's Disease Virus Is Dependent on Synthesis of De Novo Fatty Acid and Prostaglandin E2 [PDF]

, 2019
Marek’s disease virus (MDV) causes deadly lymphoma and induces an imbalance of the lipid metabolism in infected chickens. Here, we discovered that MDV activates the fatty acid synthesis (FAS) pathway in primary chicken embryo fibroblasts (CEFs).
Behboudi, Shahriar, Boodhoo, Nitish, Kamble, Nitin, Kaufer, Benedikt B.   +3 more
core   +1 more source

Boron Nitride Nanomaterials Trigger Immunomodulatory Effects in Human Broncho‐Epithelial Cells by Modulating Eicosanoid Lipid Signaling

Advanced Science, EarlyView.
This study demonstrates that BNNT exposure disrupts lipid homeostasis in bronchial epithelial cell cultures and activates eicosanoid lipid biosynthesis, producing inflammatory lipid mediators like leukotrienes. These effects are more pronounced in asthmatic cell cultures compared to healthy ones.
Govind Gupta, Jonas Bossart, Sènan Mickael D'Almeida, Luis Augusto Visani de Luna, Christoph Schwärzler, Tingting Fu, Vanesa Ayala‐Nunez, Alexander Gogos, Marija Buljan, Vera M Kissling, Emmanuel Flahaut, Miguel Garcia, Cyrill Bussy, Peter Wick, Tina Buerki‐Thurnherr   +14 more
wiley   +1 more source

Flipping the cyclooxygenase (Ptgs) genes reveals isoform-specific compensatory functions1,2[S]

Journal of Lipid Research, 2018
Two prostaglandin (PG) H synthases encoded by Ptgs genes, colloquially known as cyclooxygenase (COX)-1 and COX-2, catalyze the formation of PG endoperoxide H2, the precursor of the major prostanoids.
Xinzhi Li, Liudmila L. Mazaleuskaya, Chong Yuan, Laurel L. Ballantyne, Hu Meng, William L. Smith, Garret A. FitzGerald, Colin D. Funk   +7 more
doaj   +1 more source

Human and Mouse Eosinophils Differ in Their Ability to Biosynthesize Eicosanoids, Docosanoids, the Endocannabinoid 2-Arachidonoyl-glycerol and Its Congeners

Cells, 2022
High eosinophil (EOS) counts are a key feature of eosinophilic asthma. EOS notably affect asthmatic response by generating several lipid mediators. Mice have been utilized in hopes of defining new pharmacological targets to treat asthma.
Anne-Sophie Archambault, Julyanne Brassard, Émilie Bernatchez, Cyril Martin, Vincenzo Di Marzo, Michel Laviolette, Louis-Philippe Boulet, Marie-Renée Blanchet, Nicolas Flamand   +8 more
doaj   +1 more source

Substrate-Specific Inhibition Constants for Phospholipase A2 Acting on Unique Phospholipid Substrates in Mixed Micelles and Membranes Using Lipidomics. [PDF]

, 2019
Assaying lipolytic enzymes is extremely challenging because they act on water-insoluble lipid substrates, which are normally components of micelles, vesicles, and cellular membranes.
Armando, Aaron, Dennis, Edward A, Mouchlis, Varnavas D   +2 more
core   +6 more sources

Mechanisms of Aristolochic Acid Resistance in Specialist Butterflies and Evolutionary Insights for Potential Protective Pathways

Advanced Science, EarlyView.
The study provides an extreme example of insect adaptation to highly toxic defenses of host plants, and investigates the complex strategies to resist carcinogenic aristolochic acids, including physical isolation, metabolic detoxification, and DNA repair.
Yang Luan, Yubo Zhang, Jingjing Li, Jianqing Zhu, Yuyang Lei, Yushi Hu, Zhenqiang Xin, Tianpei Xie, Jiang Zheng, Yuanyuan Lin, Jingjing Shen, Yiyi Cao, Xinyue You, Jing Xi, Jiaying Wu, Weiying Liu, Xinyu Zhang, Yuanting Zheng, David J. Lohman, Leming Shi, Wei Zhang   +20 more
wiley   +1 more source

Genomic and lipidomic analyses differentiate the compensatory roles of two COX isoforms during systemic inflammation in mice1,2[S]

Journal of Lipid Research, 2018
Both cyclooxygenase (COX)-1 and COX-2, encoded by Ptgs1 and Ptgs2, function coordinately during inflammation. But the relative contributions and compensations of COX-1 and COX-2 to inflammatory responses remain unanswered.
Xinzhi Li, Liudmila L. Mazaleuskaya, Laurel L. Ballantyne, Hu Meng, Garret A. FitzGerald, Colin D. Funk   +5 more
doaj   +1 more source