Results 101 to 110 of about 100,024 (290)

Cortical Somatostatin Neurons Regulate Seizure Susceptibility via MINAR1/Gαs–cAMP Signaling

Advanced Science, EarlyView.
Our study identifies MINAR1 as a novel regulator of cortical interneuron excitability and seizure susceptibility. MINAR1 is preferentially expressed in SST+ interneurons. Genetic ablation of MINAR1 leads to seizure hypersensitivity, reduced SST+ neuron excitability, and impaired Gαs–cAMP signaling, disrupting the E/I balance.
Wei‐Tang Liu, Zhi‐Bin Hu, Ling Hu, Yu‐Bing Wang, Qiong Zhang, Ning‐Ning Song, Xi‐Yue Liu, Jia‐Yin Chen, Hong‐Wen Zhu, Bing‐Yao Zhou, Yun‐Chao Tao, Li Zhao, Ze‐Xuan Li, Yi‐Wei Li, Jia‐Qi Chen, Si‐Xin Tu, Cong‐Cong Qi, Sai‐Dan Ding, Gang Peng, Lin Xu, Yu‐Qiang Ding   +20 more
wiley   +1 more source

Structural modeling of ion channels using AlphaFold2, RoseTTAFold2, and ESMFold

Channels
Ion channels play key roles in human physiology and are important targets in drug discovery. The atomic-scale structures of ion channels provide invaluable insights into a fundamental understanding of the molecular mechanisms of channel gating and ...
Phuong Tran Nguyen, Brandon John Harris, Diego Lopez Mateos, Adriana Hernández González, Adam Michael Murray, Vladimir Yarov-Yarovoy   +5 more
doaj   +1 more source

Sequence and function of the two P domain potassium channels: implications of an emerging superfamily. [PDF]

, 1998
A new superfamily of K+ channels has emerged in the past 2 years. Notable for possessing two pore-forming P domains in each subunit, members of the superfamily have been recognized through phylogeny from micro-organisms to humans. Four subfamilies of two
Goldstein, SA, Ilan, N, Pausch, MH, Wang, KW   +3 more
core  

Enhancement of Calcium Ion Permeation via Resonant Coupling of Ion and Terahertz Waves in Voltage Gated Calcium Channels

Advanced Science, EarlyView.
We introduce a novel, ion‐targeted strategy to enhance calcium permeation in voltage gated calcium channels. By directly driving the ions’ coherent collective motion via resonant coupling with a 1.65 THz field, we lower the inter‐site energy barrier, inducing a statistically significant enhancement of ion influx.
Zihao Zhang, Yuankun Sun, Xinqiao Zhou, Sunchao Huang, Shengpeng Yang, Shaomeng Wang, Yubin Gong   +6 more
wiley   +1 more source

Voltage gated potassium channels expressed in Xenopus laevis(AMPHIBIA) oocytes

Acta Biológica Colombiana, 2003
Heterologous expression has been an important tool for structural and functionalcharacterization of proteins. The study of biophysical properties of ion channels,pumps and transporters has been possible thanks to their expression in Xenopuslaevisoocytes.
Hedna Chaves, Carlos Villalba, Luisa Lagos, Rafael Vargas, Francisco Martínez-Wittinghan, Carlos Clavijo, Marcela Camacho   +6 more
doaj  

Endoplasmic Reticulum Geometry Dictates Neuronal Bursting via Calcium Store Refill Rates and Exposes Selective Neuronal Vulnerability

Advanced Science, EarlyView.
The ER's continuous tubular network is maintained by ER‐shaping proteins whose mutation or dysregulation contributes to neurodegenerative diseases. Here, we show that ER morphology sets the speed of Ca2+ store replenishment between firing events. Disrupting ER continuity slows intra‐ER Ca2+ redistribution from extracellular refill (SOCE) sites, driving
Valentina Davi, Pierre Parutto, Yuyi Zhang, Tasuku Konno, Cecile Crapart, Raquel Pereira, John P. Franklin, Mosab Ali Awadelkareem, Daniel C Maddison, Michael J. Devine, Edgar R. Gomes, Joseph Chambers, Elena Koslover, Edward Avezov   +13 more
wiley   +1 more source

Bifunctional Artificial Enzymes‐Loaded Microgels With LOX‐ and CAT‐Like Activities for Metabolic Reprogramming and Scarless Wound Repair

Advanced Science, EarlyView.
A bifunctional lactate oxidase‐like and catalase‐like artificial enzyme (Metazyme) is integrated into a rod‐shaped microgel (MetaRgel) to enable cascade lactate oxidation and oxygen regeneration. By reprogramming the wound metabolic microenvironment, MetaRgel alleviates excessive lactate accumulation, oxidative stress, hypoxia, and inflammation ...
Yongyuan Kang, Pai Peng, Liang Song, Qiaoxuan Wang, Zilong Zhong, Dongchao Qiu, Yunfan Liu, Kefei Zhao, Xiaofei Dong, Changyou Gao   +9 more
wiley   +1 more source

The Segregated Expression of Voltage-Gated Potassium and Sodium Channels in Neuronal Membranes: Functional Implications and Regulatory Mechanisms

Frontiers in Cellular Neuroscience, 2017
Neurons are highly polarized cells with apparent functional and morphological differences between dendrites and axon. A critical determinant for the molecular and functional identity of axonal and dendritic segments is the restricted expression of ...
Jeffrey Lopez-Rojas, Maël Duménieu, Marie Oulé, Michael R. Kreutz, Michael R. Kreutz   +4 more
doaj   +1 more source

Controlling the spontaneous spiking regularity via channel blocking on Newman-Watts networks of Hodgkin-Huxley neurons

, 2009
We investigate the regularity of spontaneous spiking activity on Newman-Watts small-world networks consisting of biophysically realistic Hodgkin-Huxley neurons with a tunable intensity of intrinsic noise and fraction of blocked voltage-gated sodium and ...
Ozer, Mahmut, Perc, Matjaz, Uzuntarla, Muhammet   +2 more
core   +1 more source

In Vivo CRISPR Screening Identifies the Glutamate Receptor GRIA2 as Promoting Peritoneal Metastasis of Gastric Cancer via Calcium‐Dependent β‐Catenin Activation

Advanced Science, EarlyView.
We identified GRIA2 as a critical driver of gastric cancer peritoneal metastasis through in vivo CRISPR screening. Mechanistically, GRIA2‐mediated calcium influx inhibits GSK3β and activates Wnt/β‐catenin signaling, driven by glutamate from cancer‐associated fibroblasts.
Jie Sun, Xu Yang, Wenchao Jiang, Chengbo Ji, Yingying Wu, Haoyu Sun, Xinyou Liu, Masami Yamamoto, Tetsuya Tsukamoto, Sachiyo Nomura, Junjie Zhao, Yuanyuan Ruan, Haojie Li, Xuefei Wang   +13 more
wiley   +1 more source