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https://www.readbyqxmd.com/read/29116138/vascular-endothelial-growth-factor-signaling-requires-glycine-to-promote-angiogenesis
#1
Dongqing Guo, Colin E Murdoch, Hao Xu, Hui Shi, Dayue Darrel Duan, Asif Ahmed, Yuchun Gu
Peripheral vascular occlusive disease (PVOD) is a common manifestation of atherosclerosis, and it has a high rate of morbidity. Therapeutic angiogenesis would re-establish blood perfusion and rescue ischemic tissue. Vascular endothelial growth factor (VEGF) induces angiogenesis and can potentially be used to treat ischemic diseases, yet in clinical trials VEGF has not fulfilled its full potential with side effects. Whether amino acids promote angiogenesis and the molecular mechanisms are largely unknown. Here we showed that (1) Glycine significantly promoted angiogenesis both in vitro and in vivo and effectively protected mitochondrial function...
November 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29104640/penehyclidine-hydrochloride-post-conditioning-reduces-ischemia-reperfusion-induced-cardiomyocyte-apoptosis-in-rats
#2
Hongbao Tan, Li Chen, Jun Ma
Ischemic heart disease is a major cause of mortality and disability worldwide. Timely reperfusion is currently the most effective method of treating ischemic heart disease; however, abrupt reperfusion may cause ischemia/reperfusion (I/R) injury. Apoptosis serves an important role in the progression of myocardial I/R injury and it has been demonstrated that the mitochondria are the center of regulation for apoptosis. Penehyclidine hydrochloride (PHC) is used during surgery and has recently been identified as a new type of anticholinergic drug...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29038520/decrypting-strong-and-weak-single-walled-carbon-nanotubes-interactions-with-mitochondrial-voltage-dependent-anion-channels-using-molecular-docking-and-perturbation-theory
#3
Michael González-Durruthy, Adriano V Werhli, Vinicius Seus, Karina S Machado, Alejandro Pazos, Cristian R Munteanu, Humberto González-Díaz, José M Monserrat
The current molecular docking study provided the Free Energy of Binding (FEB) for the interaction (nanotoxicity) between VDAC mitochondrial channels of three species (VDAC1-Mus musculus, VDAC1-Homo sapiens, VDAC2-Danio rerio) with SWCNT-H, SWCNT-OH, SWCNT-COOH carbon nanotubes. The general results showed that the FEB values were statistically more negative (p < 0.05) in the following order: (SWCNT-VDAC2-Danio rerio) > (SWCNT-VDAC1-Mus musculus) > (SWCNT-VDAC1-Homo sapiens) > (ATP-VDAC)...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29028058/protein-protein-interaction-networks-as-a-new-perspective-to-evaluate-distinct-functional-roles-of-voltage-dependent-anion-channel-isoforms
#4
REVIEW
Marianna Caterino, Margherita Ruoppolo, Annalisa Mandola, Michele Costanzo, Stefania Orrù, Esther Imperlini
Voltage-dependent anion channels (VDACs) are a family of three mitochondrial porins and the most abundant integral membrane proteins of the mitochondrial outer membrane (MOM). VDACs are known to be involved in metabolite/ion transport across the MOM and in many cellular processes ranging from mitochondria-mediated apoptosis to the control of energy metabolism, by interacting with cytosolic, mitochondrial and cytoskeletal proteins and other membrane channels. Despite redundancy and compensatory mechanisms among VDAC isoforms, they display not only different channel properties and protein expression levels, but also distinct protein partners...
October 13, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/29021705/global-analysis-of-ginsenoside-rg1-protective-effects-in-%C3%AE-amyloid-treated-neuronal-cells
#5
Ji Seon Shim, Min-Young Song, Sung-Vin Yim, Seung-Eun Lee, Kang-Sik Park
BACKGROUND: A number of reports have described the protective effects of ginsenoside Rg1 (Rg1) in Alzheimer's disease (AD). However, the protective mechanisms of Rg1 in AD remain elusive. METHODS: To investigate the potential mechanisms of Rg1 in β-amyloid peptide-treated SH-SY5Y cells, a comparative proteomic analysis was performed using stable isotope labeling with amino acids in cell culture combined with nano-LC-MS/MS. RESULTS: We identified a total of 1,149 proteins in three independent experiments...
October 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/28980434/mitochondrial-vdac2-and-cell-homeostasis-highlighting-hidden-structural-features-and-unique-functionalities
#6
Svetlana Rajkumar Maurya, Radhakrishnan Mahalakshmi
Voltage-dependent anion channels (VDACs) are the gateway to mitochondrial processes, interlinking the cytosolic and mitochondrial compartments. The mitochondrion acts as a storehouse for cytochrome c, the effector of apoptosis, and hence VDACs become intricately involved in the apoptotic pathway. Isoform 1 of VDAC is abundant in the outer mitochondrial membrane of many cell types, while isoform 2 is the preferred channel in specialized cells including brain and some cancer cells. The primary role of VDACs is metabolite flux...
November 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28954307/in-vitro-effects-of-the-specific-mitochondrial-tspo-ligand-ro5-4864-in-cultured-human-osteoblasts
#7
Rosenberg Nahum, Rosenberg Orit, Weizman Abraham, Veenman Leo, Gavish Moshe
The 18 kDa mitochondrial translocator protein (TSPO) ligands (10 µM), e. g., protoporphyrin IX, PK 11195 and FGIN-1-27, have different effects on metabolism and protein expression in human osteoblasts. In this study, we investigated the archetypical TSPO specific ligand Ro5-4864 (10 µM) effect in primary osteoblasts in culture aiming to further understand the TSPO role in these mature metabolically active cells.We found that following exposure to Ro5-4864, cellular [(18)F]-FDG incorporation and ATP content were reduced by 48% (p<0...
September 27, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28923347/sulforaphane-improves-disrupted-er-mitochondria-interactions-and-suppresses-exaggerated-hepatic-glucose-production
#8
Emily Tubbs, Annika S Axelsson, Guillaume Vial, Claes B Wollheim, Jennifer Rieusset, Anders H Rosengren
AIMS: Exaggerated hepatic glucose production is one of the hallmarks of type 2 diabetes. Sulforaphane (SFN) has been suggested as a new potential anti-diabetic compound. However, the effects of SFN in hepatocytes are yet unclear. Accumulating evidence points to the close structural contacts between the ER and mitochondria, known as mitochondria-associated ER membranes (MAMs), as important hubs for hepatic metabolism. We wanted to investigate whether SFN could affect hepatic glucose production and MAMs...
September 18, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28918503/coq0-induced-mitochondrial-ptp-opening-triggers-apoptosis-via-ros-mediated-vdac1-upregulation-in-hl-60-leukemia-cells-and-suppresses-tumor-growth-in-athymic-nude-mice-xenografted-nude-mice
#9
You-Cheng Hseu, Varadharajan Thiyagarajan, Ting-Tsz Ou, Hsin-Ling Yang
Coenzyme Q (CoQ) analogs with variable numbers of isoprenoid units have been demonstrated as anticancer and antioxidant/pro-oxidant molecules. This study examined the in vitro and in vivo antitumor and apoptosis activities of CoQ0 (2,3-dimethoxy-5-methyl-1,4-benzoquinone, zero isoprenoid side-chains) through upregulation of the Voltage-dependent anion channel 1 (VDAC1) signaling pathway on human promyelocytic leukemia. CoQ0 (0-40 μg/mL) treatment significantly reduced HL-60 cell viability, and up-regulated mitochondrial VDAC1 expression...
September 16, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28918049/silencing-vdac1-expression-by-sirna-inhibits-cancer-cell-proliferation-and-tumor-growth-in%C3%A2-vivo
#10
Tasleem Arif, Lilia Vasilkovsky, Yael Refaely, Alexander Konson, Varda Shoshan-Barmatz
No abstract text is available yet for this article.
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28901260/vdac1-mediated-anticancer-activity-of-gallic-acid-in-human-lung-adenocarcinoma-a549-cells
#11
Aikebaier Maimaiti, Amier Aili, Hureshitanmu Kuerban, Xuejun Li
Gallic acid (GA) is generally distributed in a variety of plants and foods, and possesses cell growth-inhibiting activities in cancer cell lines. In the present study, the impact of GA on cell viability, apoptosis induction and possible molecular mechanisms in cultured A549 lung carcinoma cells was investigated. In vitro experiments showed that treating A549 cells with various concentrations of GA inhibited cell viability and induced apoptosis in a dose-dependent manner. In order to understand the mechanism by which GA inhibits cell viability, comparative proteomic analysis was applied...
September 11, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28736722/alterations-in-antioxidant-system-mitochondrial-biogenesis-and-autophagy-in-preeclamptic-myometrium
#12
Polina A Vishnyakova, Maria A Volodina, Nadezhda V Tarasova, Maria V Marey, Natalya E Kan, Zulfiya S Khodzhaeva, Mikhail Yu Vysokikh, Gennady T Sukhikh
Preeclampsia is a pregnancy complication which causes significant maternal and fetal morbidity and mortality worldwide. Although intensive research has been performed in the last 40 years, the pathology of preeclampsia is still poorly understood. The present work is a comparative study of the myometrium of women with normal pregnancy, and those with late- and early-onset preeclampsia (n = 10 for each group). We observed significant changes in the levels of antioxidant enzymes, markers of mitochondrial biogenesis and autophagy proteins in preeclamptic myometrium...
December 2017: BBA Clinical
https://www.readbyqxmd.com/read/28713289/mitochondrial-vdac1-a-key-gatekeeper-as-potential-therapeutic-target
#13
REVIEW
Amadou K S Camara, YiFan Zhou, Po-Chao Wen, Emad Tajkhorshid, Wai-Meng Kwok
Mitochondria are the key source of ATP that fuels cellular functions, and they are also central in cellular signaling, cell division and apoptosis. Dysfunction of mitochondria has been implicated in a wide range of diseases, including neurodegenerative and cardiac diseases, and various types of cancer. One of the key proteins that regulate mitochondrial function is the voltage-dependent anion channel 1 (VDAC1), the most abundant protein on the outer membrane of mitochondria. VDAC1 is the gatekeeper for the passages of metabolites, nucleotides, and ions; it plays a crucial role in regulating apoptosis due to its interaction with apoptotic and anti-apoptotic proteins, namely members of the Bcl-2 family of proteins and hexokinase...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28712506/vdac1-functions-in-ca-2-homeostasis-and-cell-life-and-death-in-health-and-disease
#14
REVIEW
Varda Shoshan-Barmatz, Yakov Krelin, Anna Shteinfer-Kuzmine
In the outer mitochondrial membrane (OMM), the voltage-dependent anion channel 1 (VDAC1) serves as a mitochondrial gatekeeper, controlling the metabolic and energy cross-talk between mitochondria and the rest of the cell. VDAC1 also functions in cellular Ca(2+) homeostasis by transporting Ca(2+) in and out of mitochondria. VDAC1 has also been recognized as a key protein in mitochondria-mediated apoptosis, contributing to the release of apoptotic proteins located in the inter-membranal space (IMS) and regulating apoptosis via association with pro- and anti-apoptotic members of the Bcl-2 family of proteins and hexokinase...
June 23, 2017: Cell Calcium
https://www.readbyqxmd.com/read/28689004/the-role-of-succinate-and-ros-in-reperfusion-injury-a-critical-appraisal
#15
REVIEW
Tatyana N Andrienko, Philippe Pasdois, Gonçalo C Pereira, Matthew J Ovens, Andrew P Halestrap
We critically assess the proposal that succinate-fuelled reverse electron flow (REF) drives mitochondrial matrix superoxide production from Complex I early in reperfusion, thus acting as a key mediator of ischemia/reperfusion (IR) injury. Real-time surface fluorescence measurements of NAD(P)H and flavoprotein redox state suggest that conditions are unfavourable for REF during early reperfusion. Furthermore, rapid loss of succinate accumulated during ischemia can be explained by its efflux rather than oxidation...
July 5, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28643197/ampk-is-activated-early-in-cerebellar-granule-cells-undergoing-apoptosis-and-influences-vadc1-phosphorylation-status-and-activity
#16
A Bobba, E Casalino, G Amadoro, V A Petragallo, A Atlante
The neurodegeneration of cerebellar granule cells, after low potassium induced apoptosis, is known to be temporally divided into an early and a late phase. Voltage-dependent anion channel-1 (VDAC1) protein, changing from the closed inactive state to the active open state, is central to the switch between the early and late phase. It is also known that: (i) VDAC1 can undergo phosphorylation events and (ii) AMP-activated protein kinase (AMPK), the sensor of cellular stress, may have a role in neuronal homeostasis...
June 22, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28640253/a-role-for-tspo-in-mitochondrial-ca-2-homeostasis-and-redox-stress-signaling
#17
Jemma Gatliff, Daniel A East, Aarti Singh, Maria Soledad Alvarez, Michele Frison, Ivana Matic, Caterina Ferraina, Natalie Sampson, Federico Turkheimer, Michelangelo Campanella
The 18 kDa translocator protein TSPO localizes on the outer mitochondrial membrane (OMM). Systematically overexpressed at sites of neuroinflammation it is adopted as a biomarker of brain conditions. TSPO inhibits the autophagic removal of mitochondria by limiting PARK2-mediated mitochondrial ubiquitination via a peri-organelle accumulation of reactive oxygen species (ROS). Here we describe that TSPO deregulates mitochondrial Ca(2+) signaling leading to a parallel increase in the cytosolic Ca(2+) pools that activate the Ca(2+)-dependent NADPH oxidase (NOX) thereby increasing ROS...
June 22, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28618997/vdac1-as-a-player-in-mitochondria-mediated-apoptosis-and-target-for-modulating-apoptosis
#18
Varda Shoshan-Barmatz, Yakov Krelin, Quan Chen
The voltage-dependent anion channel 1 (VDAC1), an outer mitochondria membrane protein, functions as a mitochondrial governor, controlling transport of metabolites in and out of the mitochondria and energy production, while also coordinating glycolysis and oxidative phosphorylation (OXPHOS). . VDAC1 plays a key role in mitochondria-mediated apoptosis by functioning in the release of apoptotic proteins located in the inter-membranal space (IMS) and due to its association with pro- and anti-apoptotic proteins...
June 16, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28608415/crystal-structural-characterization-reveals-novel-oligomeric-interactions-of-human-voltage-dependent-anion-channel-1
#19
Toshiaki Hosaka, Masateru Okazaki, Tomomi Kimura-Someya, Yoshiko Ishizuka-Katsura, Kaori Ito, Shigeyuki Yokoyama, Kosuke Dodo, Mikiko Sodeoka, Mikako Shirouzu
Voltage-dependent anion channel 1 (VDAC1), which is located in the outer mitochondrial membrane, plays important roles in various cellular processes. For example, oligomerization of VDAC1 is involved in the release of cytochrome c to the cytoplasm, leading to apoptosis. However, it is unknown how VDAC1 oligomerization occurs in the membrane. In the present study, we determined high-resolution crystal structures of oligomeric human VDAC1 (hVDAC1) prepared by using an Escherichia coli cell-free protein synthesis system, which avoided the need for denaturation and refolding of the protein...
September 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28592532/voltage-dependent-anion-channel-1-interacts-with-ribonucleoprotein-complexes-to-enhance-infectious-bursal-disease-virus-polymerase-activity
#20
Chunyan Han, Xiangwei Zeng, Shuai Yao, Li Gao, Lizhou Zhang, Xiaole Qi, Yulu Duan, Bo Yang, Yulong Gao, Changjun Liu, Yanping Zhang, Yongqiang Wang, Xiaomei Wang
Infectious bursal disease virus (IBDV) is a double-stranded RNA (dsRNA) virus. Segment A contains two overlapping open reading frames (ORFs), which encode viral proteins VP2, VP3, VP4, and VP5. Segment B contains one ORF and encodes the viral RNA-dependent RNA polymerase, VP1. IBDV ribonucleoprotein complexes are composed of VP1, VP3, and dsRNA and play a critical role in mediating viral replication and transcription during the virus life cycle. In the present study, we identified a cellular factor, VDAC1, which was upregulated during IBDV infection and found to mediate IBDV polymerase activity...
August 15, 2017: Journal of Virology
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