keyword
MENU ▼
Read by QxMD icon Read
search

mitofusin

keyword
https://www.readbyqxmd.com/read/28324764/enhancing-mitofusin-marf-ameliorates-neuromuscular-dysfunction-in-drosophila-models-of-tdp-43-proteinopathies
#1
Bilal Khalil, Marie-Jeanne Cabirol-Pol, Laetitia Miguel, Alexander J Whitworth, Magalie Lecourtois, Jean-Charles Liévens
Transactive response DNA-binding protein 43 kDa (TDP-43) is considered a major pathological protein in amyotrophic lateral sclerosis and frontotemporal lobar degeneration. The precise mechanisms by which TDP-43 dysregulation leads to toxicity in neurons are not fully understood. Using TDP-43-expressing Drosophila, we examined whether mitochondrial dysfunction is a central determinant in TDP-43 pathogenesis. Expression of human wild-type TDP-43 in Drosophila neurons results in abnormally small mitochondria...
February 27, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28322724/valosin-containing-protein-vcp-p97-inhibitors-relieve-mitofusin-dependent-mitochondrial-defects-due-to-vcp-disease-mutants
#2
Ting Zhang, Prashant Mishra, Bruce A Hay, David Chan, Ming Guo
Missense mutations of valosin-containing protein (VCP) cause an autosomal dominant disease known as inclusion body myopathy, Paget disease with frontotemporal dementia (IBMPFD) and other neurodegenerative disorders. The pathological mechanism of IBMPFD is not clear and there is no treatment. We show that endogenous VCP negatively regulates Mitofusin, which is required for outer mitochondrial membrane fusion. Because 90% of IBMPFD patients have myopathy, we generated an in vivo IBMPFD model in adult Drosophila muscle, which recapitulates disease pathologies...
March 21, 2017: ELife
https://www.readbyqxmd.com/read/28292876/maternal-exercise-upregulates-mitochondrial-gene-expression-and-increases-enzyme-activity-of-fetal-mouse-hearts
#3
Eunhee Chung, Hayli E Joiner, Tracer Skelton, Kalli D Looten, Maria Manczak, P Hemachandra Reddy
Maternal exercise during pregnancy has been shown to improve the long-term health of offspring in later life. Mitochondria are important organelles for maintaining adequate heart function, and mitochondrial dysfunction is linked to cardiovascular disease. However, the effects of maternal exercise during pregnancy on mitochondrial biogenesis in hearts are not well understood. Thus, the purpose of this study was to test the hypothesis that mitochondrial gene expression in fetal myocardium would be upregulated by maternal exercise...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28289205/reply-to-filadi-et-al-does-mitofusin-2-tether-or-separate-endoplasmic-reticulum-and-mitochondria
#4
Deborah Naon, Marta Zaninello, Marta Giacomello, Tatiana Varanita, Francesca Grespi, Sowmya Lakshminaranayan, Annalisa Serafini, Martina Semenzato, Stephanie Herkenne, Maria Isabel Hernández-Alvarez, Antonio Zorzano, Diego De Stefani, Gerald W Dorn, Luca Scorrano
No abstract text is available yet for this article.
March 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28267517/effects-of-cultured-cordyceps-mycelia-polysaccharide-a-on-tumor-neurosis-factor-%C3%AE-induced-hepatocyte-injury-with-mitochondrial-abnormality
#5
Huiling Tang, Weikun Wei, Wang Wang, Zhengqi Zha, Ting Li, Zhijie Zhang, Chen Luo, Hongping Yin, Fengjie Huang, Ying Wang
Cordyceps sinensis mycelia polysaccharide A (CPS-A), was isolated from cultured Cordyceps mycelia by 65% alcohol extraction and ion-exchange column chromatography. The molecular weight of CPS-A was 1.2×10(4)Da and the backbone was mainly composed of (1→2)-linked β-d-mannopyranose, (1→2,4)-linked β-d-mannopyranose and (1→4)-linked α-d-glucopyranose with terminal β-d-mannopyranose and α-d-glucopyranose residues. CPS-A played a protective role against TNF-α induced mitochondria injury in L02 cells via up-regulation of mitofusin 2, peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α), and membrane potential...
May 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28261787/signalling-mechanisms-underlying-doxorubicin-and-nox2-nadph-oxidase-induced-cardiomyopathy-involvement-of-mitofusin-2
#6
Declan McLaughlin, Youyou Zhao, Karla M O'Neill, Kevin S Edgar, Philip D Dunne, Anna M Kearney, David J Grieve, Barbara J McDermott
BACKGROUND AND PURPOSE: The anthracycline doxorubicin (DOX), although successful as a first-line cancer treatment, induces cardiotoxicity linked with increased production of myocardial reactive oxygen species (ROS), with Nox2 NADPH oxidase-derived superoxide reported to play a key role. The aim of this study was to identify novel mechanisms underlying development of cardiac remodelling/dysfunction further to DOX-stimulated Nox2 activation. EXPERIMENTAL APPROACH: Nox2(-/-) and wild-type (WT) littermate mice were administered DOX (12mg/kg over 3 weeks) prior to study at 4 weeks...
March 6, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28251987/salvianolic-acid-b-inhibits-mitochondrial-dysfunction-by-up-regulating-mortalin
#7
Yunxia Liu, Yingying Hu, Qiukai E, Ji Zuo, Ling Yang, Wen Liu
Salvianolic acid B is an antioxidative ingredient derived from Radix Salviae miltiorrhizae that has been widely used to treat liver diseases. However, the therapeutic mechanism underlying Salvianolic acid B has remained largely unknown. Our studies verified that Salvianolic acid B efficiently blocked mitochondrial deformation and dysfunction induced by H2O2 in the human hepatocyte cell line HL7702. Mortalin, a mitochondrial molecular chaperone, maintains mitochondrial morphology stabilization and function integrity...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28251664/preservation-of-skeletal-muscle-mitochondrial-content-in-older-adults-relationship-between-mitochondria-fibre-type-and-high-intensity-exercise-training
#8
Victoria L Wyckelsma, Itamar Levinger, Michael J McKenna, Luke E Formosa, Michael T Ryan, Aaron C Petersen, Mitchell J Anderson, Robyn M Murphy
KEYPOINTS SUMMARY: Ageing is associated with an upregulation of mitochondrial dynamics proteins, mitofusin 2 (Mfn2) and mitochondrial dynamics protein 49 (MiD49) in human skeletal muscle, the increased abundance of Mfn2 is exclusive to Type II muscle fibres. These changes occur despite a similar content of mitochondria, as measured by COXIV, NDUFA9 and complexes in their native states (Blue Native PAGE). Following 12 weeks of High-Intensity Training (HIT), older adults exhibit a robust increase in mitochondria content...
March 1, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28235489/resveratrol-stimulates-mitochondrial-fusion-by-a-mechanism-requiring-mitofusin-2
#9
Ellen L Robb, Fereshteh Moradi, Lucas A Maddalena, Andrew J F Valente, Joao Fonseca, Jeffrey A Stuart
Resveratrol (RES) is a plant-derived stilbene associated with a wide range of health benefits. Mitochondria are a key downstream target of RES, and in some cell types RES promotes mitochondrial biogenesis, altered cellular redox status, and a shift toward oxidative metabolism. Mitochondria exist as a dynamic network that continually remodels via fusion and fission processes, and the extent of fusion is related to cellular redox status and metabolism. We investigated RES's effects on mitochondrial network morphology in several cell lines using a quantitative approach to measure the extent of network fusion...
April 1, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28191022/effect-of-mahuang-gancao-ganjiang-decoction-on-fusion-and-fission-of-mitochondria-and-apoptosis-of-lymphocytes-in-mice-under-cold-stress
#10
Longyun Chen, Huimin Chen
Mahuang Gancao Ganjiang Decoction (MGGD) can effectively alleviate the symptoms of the patients suffering from exogenous cold stress. However, the curative mechanism has not been fully clarified. This study was designed to investigate the effect of MGGD on the apoptosis of lymphocytes induced by cold stress in mice. The model mice were randomly divided into four groups: the normal control group (no handling mice), cold stress group, MGGD + cold stress group, and MGGD group. Lymphocytes of the mice were isolated from the peripheral blood...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28176801/mfn2-suppresses-cancer-progression-through-inhibition-of-mtorc2-akt-signaling
#11
Ke Xu, Guo Chen, Xiaobo Li, Xiaoqin Wu, Zhijie Chang, Jianhua Xu, Yu Zhu, Peihao Yin, Xin Liang, Lei Dong
The mitochondrial GTPase mitofusin-2 (MFN2) has previously been reported to play a role in regulating cell proliferation, apoptosis and differentiation in a number of cell types. Here, we report that breast cancer patients with low MFN2 expression are associated with poor prognosis as compared to patients with high MFN2 expression. We find that MFN2 knockout from MCF7 and A549 cells via Crispr/Cas9 greatly promotes cell viability, colony formation, and invasion of cancer cells in vitro and in vivo, which were confirmed by colony formation assay, transwell invasion assay, and tumor xenograft model...
February 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28154412/superresolution-imaging-identifies-that-conventional-trafficking-pathways-are-not-essential-for-endoplasmic-reticulum-to-outer-mitochondrial-membrane-protein-transport
#12
Kyle Salka, Shivaprasad Bhuvanendran, Kassandra Wilson, Petros Bozidis, Mansi Mehta, Kristin Rainey, Hiromi Sesaki, George H Patterson, Jyoti K Jaiswal, Anamaris M Colberg-Poley
Most nuclear-encoded mitochondrial proteins traffic from the cytosol to mitochondria. Some of these proteins localize at mitochondria-associated membranes (MAM), where mitochondria are closely apposed with the endoplasmic reticulum (ER). We have previously shown that the human cytomegalovirus signal-anchored protein known as viral mitochondria-localized inhibitor of apoptosis (vMIA) traffics from the ER to mitochondria and clusters at the outer mitochondrial membrane (OMM). Here, we have examined the host pathways by which vMIA traffics from the ER to mitochondria and clusters at the OMM...
December 2017: Scientific Reports
https://www.readbyqxmd.com/read/28131082/mitochondrial-dynamics-in-type-2-diabetes-pathophysiological-implications
#13
REVIEW
Susana Rovira-Llopis, Celia Bañuls, Noelia Diaz-Morales, Antonio Hernandez-Mijares, Milagros Rocha, Victor M Victor
Mitochondria play a key role in maintaining cellular metabolic homeostasis. These organelles have a high plasticity and are involved in dynamic processes such as mitochondrial fusion and fission, mitophagy and mitochondrial biogenesis. Type 2 diabetes is characterised by mitochondrial dysfunction, high production of reactive oxygen species (ROS) and low levels of ATP. Mitochondrial fusion is modulated by different proteins, including mitofusin-1 (MFN1), mitofusin-2 (MFN2) and optic atrophy (OPA-1), while fission is controlled by mitochondrial fission 1 (FIS1), dynamin-related protein 1 (DRP1) and mitochondrial fission factor (MFF)...
April 2017: Redox Biology
https://www.readbyqxmd.com/read/28122638/of-yeast-mice-and-men-mams-come-in-two-flavors
#14
REVIEW
Maria Sol Herrera-Cruz, Thomas Simmen
The past decade has seen dramatic progress in our understanding of membrane contact sites (MCS). Important examples of these are endoplasmic reticulum (ER)-mitochondria contact sites. ER-mitochondria contacts have originally been discovered in mammalian tissue, where they have been designated as mitochondria-associated membranes (MAMs). It is also in this model system, where the first critical MAM proteins have been identified, including MAM tethering regulators such as phospho-furin acidic cluster sorting protein 2 (PACS-2) and mitofusin-2...
January 25, 2017: Biology Direct
https://www.readbyqxmd.com/read/28118288/mitochondrial-dynamics-changes-with-age-in-an-appsw-ps1de9-mouse-model-of-alzheimer-s-disease
#15
Lin-Lin Xu, Yang Shen, Xiao Wang, Li-Fei Wei, Ping Wang, Hui Yang, Cun-Fu Wang, Zhao-Hong Xie, Jian-Zhong Bi
Increasing research suggests that mitochondrial defects play a major role in Alzheimer's disease (AD) pathogenesis. We aimed to better understand changes in mitochondria with the development and progression of AD. We compared APPsw/PS1dE9 transgenic mice at 3, 6, 9, and 12 months old as an animal model of AD and age-matched C57BL/6 mice as controls. The learning ability and spatial memory ability of APPsw/PS1dE9 mice showed significant differences compared with controls until 9 and 12 months. Mitochondrial morphology was altered in hippocampus tissue of APPsw/PS1dE9 mice beginning from the third month...
March 1, 2017: Neuroreport
https://www.readbyqxmd.com/read/28114303/mfn1-structures-reveal-nucleotide-triggered-dimerization-critical-for-mitochondrial-fusion
#16
Yu-Lu Cao, Shuxia Meng, Yang Chen, Jian-Xiong Feng, Dong-Dong Gu, Bing Yu, Yu-Jie Li, Jin-Yu Yang, Shuang Liao, David C Chan, Song Gao
Mitochondria are double-membraned organelles with variable shapes influenced by metabolic conditions, developmental stage, and environmental stimuli. Their dynamic morphology is a result of regulated and balanced fusion and fission processes. Fusion is crucial for the health and physiological functions of mitochondria, including complementation of damaged mitochondrial DNAs and the maintenance of membrane potential. Mitofusins are dynamin-related GTPases that are essential for mitochondrial fusion. They are embedded in the mitochondrial outer membrane and thought to fuse adjacent mitochondria via combined oligomerization and GTP hydrolysis...
February 16, 2017: Nature
https://www.readbyqxmd.com/read/28112198/chlorpyrifos-inhibits-neural-induction-via-mfn1-mediated-mitochondrial-dysfunction-in-human-induced-pluripotent-stem-cells
#17
Shigeru Yamada, Yusuke Kubo, Daiju Yamazaki, Yuko Sekino, Yasunari Kanda
Organophosphates, such as chlorpyrifos (CPF), are widely used as insecticides in agriculture. CPF is known to induce cytotoxicity, including neurodevelopmental toxicity. However, the molecular mechanisms of CPF toxicity at early fetal stage have not been fully elucidated. In this study, we examined the mechanisms of CPF-induced cytotoxicity using human induced pluripotent stem cells (iPSCs). We found that exposure to CPF at micromolar levels decreased intracellular ATP levels. As CPF suppressed energy production that is a critical function of the mitochondria, we focused on the effects of CPF on mitochondrial dynamics...
January 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28110471/depletion-of-mitofusin-2-causes-mitochondrial-damage-in-cisplatin-induced-neuropathy
#18
Ilja Bobylev, Abhijeet R Joshi, Mohammed Barham, Wolfram F Neiss, Helmar C Lehmann
Sensory neuropathy is a relevant side effect of the antineoplastic agent cisplatin. Mitochondrial damage is assumed to play a critical role in cisplatin-induced peripheral neuropathy, but the pathomechanisms underlying cisplatin-induced mitotoxicity and neurodegeneration are incompletely understood. In an animal model of cisplatin-induced neuropathy, we determined in detail the extent and spatial distribution of mitochondrial damage during cisplatin treatment. Changes in the total number of axonal mitochondria during cisplatin treatment were assessed in intercostal nerves from transgenic mice that express cyan fluorescent protein...
January 21, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28096879/association-between-mitofusin-2-gene-polymorphisms-and-late-onset-alzheimer-s-disease-in-the-korean-population
#19
Young Jong Kim, Jin Kyung Park, Won Sub Kang, Su Kang Kim, Changsu Han, Hae Ri Na, Hae Jeong Park, Jong Woo Kim, Young Youl Kim, Moon Ho Park, Jong-Woo Paik
OBJECTIVE: Mitochondrial dysfunction is a prominent and early feature of Alzheimer's disease (AD). The morphologic changes observed in the AD brain could be caused by a failure of mitochondrial fusion mechanisms. The aim of this study was to investigate whether genetic polymorphisms of two genes involved in mitochondrial fusion mechanisms, optic atrophy 1 (OPA1) and mitofusin 2 (MFN2), were associated with AD in the Korean population by analyzing genotypes and allele frequencies. METHODS: One coding single nucleotide polymorphism (SNP) in the MFN2, rs1042837, and two coding SNPs in the OPA1, rs7624750 and rs9851685, were compared between 165 patients with AD (83 men and 82 women, mean age 72...
January 2017: Psychiatry Investigation
https://www.readbyqxmd.com/read/28096338/mitochondrial-fusion-dynamics-is-robust-in-the-heart-and-depends-on-calcium-oscillations-and-contractile-activity
#20
Verónica Eisner, Ryan R Cupo, Erhe Gao, György Csordás, William S Slovinsky, Melanie Paillard, Lan Cheng, Jessica Ibetti, S R Wayne Chen, J Kurt Chuprun, Jan B Hoek, Walter J Koch, György Hajnóczky
Mitochondrial fusion is thought to be important for supporting cardiac contractility, but is hardly detectable in cultured cardiomyocytes and is difficult to directly evaluate in the heart. We overcame this obstacle through in vivo adenoviral transduction with matrix-targeted photoactivatable GFP and confocal microscopy. Imaging in whole rat hearts indicated mitochondrial network formation and fusion activity in ventricular cardiomyocytes. Promptly after isolation, cardiomyocytes showed extensive mitochondrial connectivity and fusion, which decayed in culture (at 24-48 h)...
January 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
keyword
keyword
42249
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"