Results 71 to 80 of about 83,988 (248)

Liquid chromatographic method for extracellular Guanosine 5′-triphosphate and tetrahydrobiopterin pathway products analysis from cadaveric samples and human biofluids

Journal of Chromatography Open
To gain a deep insight and to obtain a superior understanding about guanosine-based pathway, this paper reports an innovative approach to study this critical subject.
M. Perrucci, C. Santangelo, D. Bondi, T. Pietrangelo, F. Savini, A.M. Catena, M. Bonelli, M. Locatelli, C. D'Ovidio   +8 more
doaj   +1 more source

Synergistic Activation of Immunogenic Cell Death and the cGAS–STING Pathway by Engineered Zinc/Manganese‐Based Metal–Organic Framework Nanoplatforms for Colon Cancer Immunotherapy

Advanced Science, EarlyView.
A zinc/manganese (Zn/Mn)‐based metal‐organic framework (MOF) loaded with the STING agonist c‐di‐AMP diammonium (denoted AMP@Zn/Mn‐MOF) was developed to synergistically activate the cGAS‐STING pathway and induce immunogenic cell death. This nanoplatform reprograms the immunosuppressive tumor microenvironment, significantly enhancing anti‐PD‐L1 ...
Bingzi Zhu, Xiaodong Chen, Chang Xu, Xuehua Qian, Binglong Bai, Ji Lin, Wenhai Deng, Xiang Wang, Yuekai Cui, Shengsheng Zhao, Zuoliang Xie, Tao You, Yingpeng Huang, Xian Shen, Xufeng Lu, Weijian Sun   +15 more
wiley   +1 more source

Nucleotide-, chemotactic peptide- and phorbol ester-induced exocytosis in HL-60 leukemic cells [PDF]

, 1990
Undifferentiated and differentiated HL-60 leukemic cells possess nucleotide receptors which functionally couple to phospholipase C via pertussis toxin-sensitive guanine nucleotide-binding proteins (G-proteins).
Seifert, Roland, Wenzel-Seifert, Katharina   +1 more
core   +1 more source

Kinesin‐Induced Buckling Reveals the Limits of Microtubule Self‐Repair

Advanced Science, EarlyView.
This study shows that kinesin‐driven buckling induces extensive microtubule lattice damage that often exceeds intrinsic self‐repair and leads to filament failure. While curvature, motor motility, and force individually cause limited damage, their combination overwhelms repair.
Shweta Nandakumar, Jonas Bosche, Mirko Wieczorek, Constantin Matteo Albrecht, Belinda König, Mona Grünewald, Ludger Santen, Stefan Diez, Reza Shaebani, Laura Schaedel   +9 more
wiley   +1 more source

Assignments of backbone 1H, 13C and 15N resonances in H-Ras (1–166) complexed with GppNHp at physiological pH [PDF]

, 2012
The small GTPase Ras is an important signaling molecule acting as a molecular switch in eukaryotic cells. Recent findings of global conformational exchange and a putative allosteric binding site in the G domain of Ras opened an avenue to understanding ...
Kovriguine, Evgueni, O\u27Connor, Casey
core   +1 more source

Nanozymes for Liver Disease Therapy: Advances in Catalytic Activity, Targeting Strategies, and Clinical Translation

Advanced Science, EarlyView.
Nanozymes, as enzyme‐mimicking nanomaterials, exhibit unique catalytic properties for the treatment of liver diseases. By regulating redox homeostasis, modulating immune responses, and enabling targeted delivery, nanozymes overcome the limitations of natural enzymes.
Xiandi Meng, Ge Zhu, Siyu Sun, Wenbo Yao, Yuning Zhang, Yong‐Guang Yang, Tianmeng Sun   +6 more
wiley   +1 more source

Structural Insights into the Regulation Mechanism of Small GTPases by GEFs

Molecules, 2019
Small GTPases are key regulators of cellular events, and their dysfunction causes many types of cancer. They serve as molecular switches by cycling between inactive guanosine diphosphate (GDP)-bound and active guanosine triphosphate (GTP)-bound states ...
Sachiko Toma-Fukai, Toshiyuki Shimizu
doaj   +1 more source

A novel hemizygous mutation associated with severe intellectual disability and epilepsy: a case report

Journal of International Medical Research, 2021
ARHGEF9 encodes collybistin, a brain-specific guanosine diphosphate-guanosine-5′-triphosphate exchange factor that plays an important role in clustering of gephyrin and γ-aminobutyric acid type A receptors in the postsynaptic membrane.
Tong Qiu, Qian Dai, Qiu Wang
doaj   +1 more source

Light-driven artificial enzymes for selective oxidation of guanosine triphosphate using water-soluble POSS network polymers. [PDF]

, 2014
Accepted 25 Jun 2014.The light-driven artificial enzymes were constructed to realize unnatural reactions concerning bio-significant molecules. In this manuscript, the guanosine triphosphate (GTP)-selective oxidation is reported using the network polymers
Chujo, Yoshiki, Jeon, Jong-Hwan, Tanaka, Kazuo   +2 more
core   +1 more source

Kontrollierter Transport und lichtinduzierte Freisetzung von Magic Spot Nukleotiden in Escherichia coli

Angewandte Chemie, EarlyView.
We synthesized photocaged, clickable and isotope‐labeled “magic spot” Nucleotides and delivered them into Escherichia coli comparing different approaches. Light‐controlled release inside living cells enabled tracking of their conversion from pppGpp to ppGpp by capillary electrophoresis mass spectrometry and revealed their impact on the growth rate of a
Christoph Popp, Patrick Moser, Anselm Schwoerbel, Xinwei Liu, Johannes Freitag, Pinku Sarmah, Isabel Prucker, Robert Zscherp, Xuan Wang, Philipp Klahn, Hans‐Georg Koch, Gert Bange, Henning J. Jessen   +12 more
wiley   +1 more source