Review
Cell Biology
Hua-Qian Yang, Fabio A. Echeverry, Assmaa ElSheikh, Ivan Gando, Sophia Anez Arredondo, Natalie Samper, Timothy Cardozo, Mario Delmar, Show-Ling Shyng, William A. Coetzee
Summary: Sarcolemmal/plasmalemmal ATP-sensitive K+ (K-ATP) channels play crucial roles in various cell types and tissues. Recent studies have highlighted that the surface expression of K-ATP channels is tightly regulated and has significant implications in both health and disease.
AMERICAN JOURNAL OF PHYSIOLOGY-CELL PHYSIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Gregory M. Martin, Bruce L. Patton, Show-Ling Shyng
Summary: KATP channels are octameric complexes consisting of four inward rectifying potassium channels and four sulfonylurea receptors from the ABC transporter family. These channels regulate a wide range of cellular activities by coupling intracellular ATP/ADP ratios with membrane excitability. Recent high-resolution cryoEM structures have provided insights into the complex interactions between channel subunits and their ligands, shedding light on the mechanisms of KATP channel regulation.
CURRENT OPINION IN STRUCTURAL BIOLOGY
(2023)
Article
Multidisciplinary Sciences
Min Woo Sung, Zhongying Yang, Camden M. Driggers, Bruce L. Patton, Barmak Mostofian, John D. Russo, Daniel M. Zuckerman, Show-Ling Shyng
Summary: The structure and activation mechanism of vascular K-ATP channels differ from other K-ATP channel isoforms, showing unique properties. Experimental and simulation studies have revealed key interactions between subunits related to activity regulation.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Multidisciplinary Sciences
Chen Zhao, Roderick MacKinnon
Summary: K-ATP channels act as metabolic sensors translating ATP/ADP balance to membrane excitability. The structure of human pancreatic K-ATP reveals an open pore, coordinated structural changes within the ATP-binding site and channel gate in Kir, as well as conformational changes in SUR. The pancreatic hK(ATP) exhibits a unique PIP2-independent opening property.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Biochemistry & Molecular Biology
Min Woo Sung, Camden M. Driggers, Barmak Mostofian, John D. Russo, Bruce L. Patton, Daniel M. Zuckerman, Show-Ling Shyng
Summary: Regulation of pancreatic KATP channels involves complex interactions between their subunits and ligands. This study investigates the structural changes and ligand interactions associated with channel gating using cryo-EM data. The results show that pharmacological inhibitors and ATP can modulate the channel conformation and affect intra-subunit and inter-subunit interactions.
JOURNAL OF MOLECULAR BIOLOGY
(2022)
Article
Cell Biology
Min Liu, Cui Liu, Xue Xiao, Shuai-Shuai Han, Ming-Xia Bi, Qian Jiao, Xi Chen, Chun-Ling Yan, Xi-Xun Du, Hong Jiang
Summary: The upregulation of the SUR1 subunit in ATP-sensitive potassium channels is found to play an important role in the selective degeneration of dopaminergic neurons in Parkinson's disease. Delaying the progression of dopaminergic neuron degeneration is possible through interference with SUR1 expression. The elevated expression of transcription factors FOXA1 and FOXA2 has been identified as a mechanism causing the upregulation of the SUR1 subunit.
Article
Chemistry, Medicinal
Tino Dyhring, Inger Jansen-Olesen, Palle Christophersen, Jes Olesen
Summary: Migraine is a highly disabling pain disorder with a need for new treatment strategies. ATP-sensitive potassium (K-ATP) channel inhibitors, specifically Kir6.1/SUR2B subtype, show potential as effective drugs for migraine treatment. Characterization of available K-ATP channel activators and inhibitors indicates the need for further development of selective K-ATP channel blockers for effective migraine treatment.
Article
Cell Biology
Thuong Ho, Evgeniy Potapenko, Dawn B. Davis, Matthew J. Merrins
Summary: We provide evidence that a glycolytic metabolon locally controls ATP-sensitive K+ channels in pancreatic islet endocrine cells, and demonstrate the presence of a plasma membrane-associated NAD+/NADH cycle.
Review
Biotechnology & Applied Microbiology
Leandro Zuniga, Angel Cayo, Wendy Gonzalez, Cristian Vilos, Rafael Zuniga
Summary: This article summarizes the important role of potassium channels in cancer, including promoting cell proliferation, resistance to apoptosis, metabolic changes, angiogenesis, and migratory capabilities, and discusses strategies for designing new drugs.
ONCOTARGETS AND THERAPY
(2022)
Review
Pharmacology & Pharmacy
Zhicheng Wang, Weikang Bian, Yufeng Yan, Dai-Min Zhang
Summary: ATP-sensitive potassium channels (K-ATP channels) play important roles in cellular excitability and metabolism. Activation of K-ATP channels can repolarize the membrane potential and reduce the occurrence of arrhythmias. Under severe and prolonged anoxia, K-ATP channels open to decrease cellular excitability and prevent action potential generation. Small active molecules can enhance the opening of K-ATP channels, leading to membrane repolarization and decreased malignant arrhythmias. Mutations in K-ATP channels worsen the regulatory roles in mutation-related diseases. However, efficient treatments for patients with K-ATP channel mutations are still lacking.
FRONTIERS IN PHARMACOLOGY
(2022)
Review
Neurosciences
Amalie Clement, Sarah Louise Christensen, Inger Jansen-Olesen, Jes Olesen, Song Guo
Summary: Migraine is a leading cause of disability worldwide and has a significant impact on work and social life. Blocking the ATP-sensitive potassium channel may be a promising approach for migraine treatment. However, further research is needed to understand the potential side effects and effectiveness of this approach.
FRONTIERS IN MOLECULAR NEUROSCIENCE
(2023)
Review
Cell Biology
Jirong Lv, Xue Xiao, Mingxia Bi, Tingting Tang, Deao Kong, Meining Diao, Qian Jiao, Xi Chen, Chunling Yan, Xixun Du, Hong Jiang
Summary: ATP-sensitive potassium channels (KATP channels) play a crucial role in linking the electrical activity of the cell membrane with cell metabolism. They have been found to be expressed in various cells and play important roles in neurodegenerative diseases. The KATP channel openers and inhibitors have protective effects on neurons by regulating neuronal excitability and neurotransmitter release, reducing abnormal protein aggregation and Ca2+ overload, and decreasing reactive oxygen species (ROS) production and microglia activation. However, KATP channels also exhibit dual effects in some cases.
AGEING RESEARCH REVIEWS
(2022)
Article
Multidisciplinary Sciences
Dian Ding, Jing-Xiang Wu, Xinli Duan, Songling Ma, Lipeng Lai, Lei Chen
Summary: ATP-sensitive potassium channels (K-ATP) composed of Kir6 and SUR subunits convert the metabolic status of the cell into electrical signals. The authors present cryo-EM structures of SUR2A and SUR2B subunits in complex with two vasodilators, P1075 and levcromakalim, uncovering the mechanisms of these drugs.
NATURE COMMUNICATIONS
(2022)
Review
Chemistry, Medicinal
Lina T. Al Kury
Summary: Hyperglycemia, a hallmark of diabetes, can lead to various health complications. Medicinal plants offer bioactive compounds with pharmacological effects and fewer side effects. This review focuses on their modulation of the pancreatic K-ATP channel and emphasizes the importance of studying their interaction for diabetes treatment.
Article
Cell Biology
Ashwini Hariharan, Colin D. Robertson, Daniela C. G. Garcia, Thomas A. Longden
Summary: This study demonstrates the important role of capillary thin-strand pericytes in regulating brain hemodynamics and responding to local energy deficits. Activation of KATP channels in pericytes leads to hyperpolarization and increased blood flow to prevent energetic shortfalls.