Results 51 to 60 of about 11,277 (158)

Generalizing the Gaussian Network Model: Spanning‐Tree Thermodynamics Shows Entropy‐Driven KRAS Activation

Proteins: Structure, Function, and Bioinformatics, EarlyView.
ABSTRACT The GTPase KRAS executes a conformational switch between a GTP‐bound active state and a GDP‐bound inactive state, a process central to oncogenic signaling. However, the structural basis of this switching at the level of residue‐contact organization remains incompletely characterized by traditional binary structural models.
Fatma Senguler Ciftci, Burak Erman
wiley   +1 more source

Baicalein Sensitizes Radioresistant BT549 and MCF7‐R Breast Cancer Cells by Modulating Rac1 Signaling

Phytotherapy Research, EarlyView.
ABSTRACT Radioresistance remains a key barrier in breast cancer (BC) treatment. Baicalein, a flavonoid from Scutellaria baicalensis, has shown potential to enhance radiosensitivity. This study investigates its efficacy and mechanism in radioresistant BC models. Radioresistant BC cell models were established via fractionated irradiation and validated by
Zitong Zhao, Zhangyun Li, Quanzhou Peng, Shuqun Zhang   +3 more
wiley   +1 more source

An intracellular recombinant single‐chain variable antibody fragment as a new class of phosphodiesterase type 5 inhibitors

British Journal of Pharmacology, EarlyView.
Background and Purpose Cyclic guanosine monophosphate (cGMP) is a ubiquitous second messenger involved in human (patho‐)physiology. Phosphodiesterase 5 (PDE5) is a major cGMP hydrolyzing enzyme in many cell types including vascular smooth muscle cells (VSMCs). Several highly selective PDE5 inhibitors are in clinical use. However, there are currently no
Kürsat Kirkgöz, Sophie Sprenger, Olga Schweigert, Sanika Mohagaonkar, Matti Walsdorff, Tanja Zeller, Filip Berisha, Viacheslav O. Nikolaev, Sergei D. Rybalkin   +8 more
wiley   +1 more source

Memantine prevents acute stress‐induced memory deficits by reversing sex‐dependent pathophysiological glutamatergic alterations in the dorsal hippocampus

British Journal of Pharmacology, EarlyView.
Abstract Background and Purpose The neural mechanisms underlying effects of acute stress on memory are poorly understood. We demonstrated previously that acute stress produces identical spatial memory deficits in male and female mice but through distinct molecular mechanisms, with females exhibiting up‐regulation of N‐methyl‐D‐aspartate (NMDA) receptor
Sebastiano A. Torrisi, Lidia Diolosà, Giuseppe Aceto, Claudia Marchetti, Federica Geraci, Konstantinos Partsinevelos, Silvia Rizzo, Margherita Grasso, Filippo Caraci, Francesco Bellia, Giovanni Li Volti, Angela Maria Amorini, Marcello D′Ascenzo, Gian Marco Leggio   +13 more
wiley   +1 more source

Shared and specific molecular mechanisms of proteasome inhibitors in chemotherapy‐induced peripheral neurotoxicity

British Journal of Pharmacology, EarlyView.
This study compares the molecular mechanisms of chemotherapy‐related peripheral neurotoxicity of two proteasome inhibitors, bortezomib and carfilzomib, using a multidisciplinary approach to reveal that, alongside shared effects on mitochondria structure and function, the more neurotoxic drug BTZ has specific effects on microtubules and mitochondrial ...
Federico Iseppon, Alessio Malacrida, Alessia Chiorazzi, Annalisa Canta, Paola Alberti, Valentina Alda Carozzi, Eleonora Pozzi, Virginia Rodriguez‐Menendez, Laura Cherchi, Valentina Fabbro, Lisa Pagani, Elisa Tonelli, Laura Tapella, Andrea Mattarei, Sara Palermo, Daniele Cartelli, Mario Mauri, Noemi Scimia, Serena Stanga, Dmitry Lim, Carla Distasi, Marta Delconti, Clizia Chinello, Patricia Morcillo, Maria Elena Pero, Francesca Bartolini, Guido Cavaletti, Cristina Meregalli   +27 more
wiley   +1 more source

Agonist‐specific conformational dynamics at the β2‐adrenoceptor dictate allosteric modulation of Gαs signalling and bronchodilation

British Journal of Pharmacology, EarlyView.
Abstract Background and Purpose β2‐adrenoceptor (β2AR) agonists are the cornerstone of asthma therapy and promote bronchodilation through Gαs signalling in airway smooth muscle (ASM), but their efficacy is limited by β‐arrestin‐mediated β2AR desensitization.
Sushrut D. Shah, Joshua Richard, Suvankar Ghosh, Jillian Jerwick, Joice T. Gavali, Raymond B. Penn, Alexander D. MacKerell Jr, Deepak A. Deshpande   +7 more
wiley   +1 more source

MiR‐375 in CAFs‐Derived EVs Promotes HCC Progression via Regulating RASA1 and May Potentially Serve as a Biomarker for HCC

Cancer Science, EarlyView.
CAFs could transfer EVs miR‐375 into endothelial cells with a low level of RASA1 and further promote EC angiogenesis. Plasma EVs miR‐375 have the potential values as a novel diagnostic and prognostic biomarker for HCC. ABSTRACT Cancer‐associated fibroblasts (CAFs) in the tumor microenvironment play an important role in cancer initiation and progression
Wei Qin, Li Wang, Beiyuan Hu, Cuicui Xiao, XiaoYing Wu, Huan Tian, Songlin Peng   +6 more
wiley   +1 more source

1H NMR metabolomics and lipidomics analysis of neutrophils reveals biomarkers of ageing, inflammageing and frailty

The FEBS Journal, EarlyView.
Using 1H NMR metabolomics, we measured polar and lipid metabolites from human blood neutrophils from people with frailty (n = 31, mean age 84Y), people with rheumatoid arthritis (n = 16, mean age 55Y), robust older (n = 24, mean age 66Y) and healthy younger people (n = 21, mean age 22Y).
Genna Ali Abdullah, Grace Filbertine, Lucy Gill, Asangaedem Akpan, Marie M. Phelan, Helen Louise Wright   +5 more
wiley   +1 more source

Long‐read sequencing‐based atlas of tissue‐specific expression of DNM1L transcript variants

The FEBS Journal, EarlyView.
Targeted long‐read sequencing resolves full‐length DNM1L (Drp1) isoforms and reveals conserved, tissue‐specific expression patterns across human and mouse tissues. Functional assays show that Drp1 isoforms differ in their ability to drive mitochondrial fission, independent of abundance, with specific exons modulating activity.
Feng Yan, Jafar S. Jabbari, Naomi X. L. Ling, Anne M. Kong, Jia Q. Truong, Marnie L. Maddock, Ayeshah A. Rosdah, Christopher G. Langendorf, Lifang Zhang, Jarmon G. Lees, Sebastian Bass‐Stringer, Danise Ann Onda, Alice Pébay, Mirella Dottori, Kim Loh, Jessica K. Holien, Sean Lal, Nadia M. Davidson, Jonathan S. Oakhill, Shiang Y. Lim   +19 more
wiley   +1 more source

RNF13 regulates the endolysosomal pathway through interaction with the small GTPase Arl8B

The FEBS Journal, EarlyView.
The E3 ubiquitin ligase RNF13 functions as a regulatory scaffold, organizing Arl8B‐dependent complexes and tuning downstream signaling that controls endolysosomal organization and trafficking. In this model, wild‐type RNF13 associates with Arl8B on endolysosomes, whereas Arl8B (E22D/F55A) or RNF13 (L244A) variants weaken complex assembly, potentially ...
Audrey M. Sénécal, Valérie C. Cabana, Antoine Y. Bouchard, Laurent Cappadocia, Marc P. Lussier   +4 more
wiley   +1 more source