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Journal of Cellular Physiology

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https://www.readbyqxmd.com/read/27891591/nor1-suppresses-cancer-stem-like-cells-properties-of-tumor-cells-via-the-inhibition-of-the-akt-gsk-3%C3%AE-wnt-%C3%AE-catenin-aldh1a1-signal-circuit
#1
Wei Wang, Mei Yi, Shengnan Chen, Junjun Li, Haijing Zhang, Wei Xiong, Guiyuan Li, Xiaoling Li, Bo Xiang
Cancer stem cells (CSCs) play a key role in tumor radiotherapy and chemotherapy resistance, relapse, and metastasis, and are primarily maintained in a resting state in vivo. The failure of conventional therapies to target CSCs is the main cause of treatment failure. The discovery of CSCs in nasopharyngeal carcinoma (NPC) tumors is becoming more prevalent; however, the understanding of the mechanisms underlying the maintenance of tumor stemness is still limited. We previously cloned NOR1, a tumor suppressor gene downregulated in NPC cell lines and tissues...
November 27, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27891586/celastrol-attenuates-cadmium-induced-neuronal-apoptosis-via-inhibiting-ca-2-camkii-dependent-akt-mtor-pathway
#2
Ruijie Zhang, Yu Zhu, Xiaoqing Dong, Beibei Liu, Nana Zhang, Xiaoxue Wang, Lei Liu, Chong Xu, Shile Huang, Long Chen
Cadmium (Cd), an environmental and industrial pollutant, affects the nervous system and consequential neurodegenerative disorders. Recently we have shown that celastrol prevents Cd-induced neuronal cell death partially by suppressing Akt/mTOR pathway. However, the underlying mechanism remains to be elucidated. Here we show that celastrol attenuated Cd-elevated intracellular free calcium ([Ca(2+) ]i ) level and apoptosis in neuronal cells. Celastrol prevented Cd-induced neuronal apoptosis by inhibiting Akt-mediated mTOR pathway, as inhibition of Akt with Akt inhibitor X or ectopic expression of dominant negative Akt reinforced celastrol's prevention of Cd-induced phosphorylation of S6K1/4E-BP1 and cell apoptosis...
November 27, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27891582/versatile-roles-of-intracellularly-located-trpv1-channel
#3
REVIEW
Rui Zhao, Suk Ying Tsang
The ubiquitous expression in many organs throughout the body and the ability to respond to a wide variety of physical and chemical stimuli have brought transient receptor potential (TRP) channels to the vanguards of our sensory systems. TRP vanilloid-1 (TRPV1) is the founding member of the TRPV subfamily. TRPV1 can be activated by noxious heat, protons and vanilloids. Previous studies have shown that TRPV1 is located on the plasma membrane, serving to non-selectively permeate calcium ion from the extracellular region to the cytoplasm...
November 27, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27888504/condensin-regulation-of-genome-architecture
#4
REVIEW
Vibhuti Rana, Giovanni Bosco
Progression through the cell cycle for both prokaryotes and eukaryotes is required for cell division. At almost every level of cellular organization structure and function of subcellular compartments and organelles must accommodate the progression of cell division. As cells progress through the cell division cycle, perhaps the most dramatic observable cellular change is the shape of chromosomes. This article is protected by copyright. All rights reserved.
November 26, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27886379/supernatants-of-adipocytes-from-obese-vs-normal-weight-women-and-breast-cancer-cells-in-vitro-impact-on-angiogenesis
#5
L Bougaret, L Delort, H Billard, C Lequeux, N Goncalves-Mendes, A Mojallal, O Damour, M-P Vasson, F Caldefie-Chezet
Breast cancer is correlated with a higher risk of metastasis in obese postmenopausal women. Adipokines, whose plasma concentrations are modulated in obese subjects, surrounds mammary cells, suggesting that adipocyte secretions affect mammary tumorogenesis. We hypothsesis that matures adipocytes secretions from obese women conditioned or not by breast neoplasic cells, increase changes on the stages of angiogenesis. Supernatants of human matures adipocytes differentiated from stem cells of either adipose tissue of normal weight (MA20) or obese (MA30) women or obtained from co-cultures between MA20 or MA30 and breast cancer cell line MCF-7 were collected...
November 25, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27886378/interactive-effect-of-corticosterone-and-lactate-on-regulation-of-testosterone-production-in-rat-leydig-cells
#6
Chih-Chieh Chen, Chien-Wei Chen, Po-Han Lin, Jou-Chun Chou, Ting-Chun Weng, Cai-Yun Jian, Sindy Hu, Wei-Ho Lai, Fu-Kong Lieu, Shyi-Wu Wang, Paulus S Wang
The increasing intensity of exercise enhanced corticosterone and lactate production in both humans and rodents. Our previous studies also demonstrated that lactate could stimulate testosterone production in vivo and in vitro. However, the production of testosterone in response to combined corticosterone and lactate on Leydig cells, and underlying molecular mechanisms are remained unclear. This study investigated the changes in testosterone levels of Leydig cells upon exposure to lactate, corticosterone or combination of both, and revealed the detailed mechanisms...
November 25, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27886375/modulation-of-chloride-currents-in-human-lung-epithelial-cells-exposed-to-exogenous-oxidative-stress
#7
Rita Canella, Marta Martini, Roberta Borriello, Carlotta Cavicchio, Ximena M Muresan, Mascia Benedusi, Franco Cervellati, Giuseppe Valacchi
Air pollution continues to be a major public health concern affecting 9 out of 10 individuals living in urban areas worldwide. Respiratory tract is the organ most exposed to gas pollution and ozone has been shown to be one of the most noxious pollutants to which living organisms are exposed. In the present work, we have investigated the effects of 0.1 ppm of ozone on chloride currents in human lung epithelial cells (A549 line) and whether this effect could be modulated by vitamin E pre-treatment. Whole-cell patch clamp technique was applied to not excitable cells in order to obtain information about chloride currents behavior, important for epithelial lung cells homeostasis...
November 25, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27883184/epigenetics-in-reactive-and-reparative-cardiac-fibrogenesis-the-promise-of-epigenetic-therapy
#8
REVIEW
Asish K Ghosh, Rahul Rai, Panagiotis Flevaris, Douglas E Vaughan
Epigenetic changes play a pivotal role in the development of a wide spectrum of human diseases including cardiovascular diseases, cancer, diabetes, and intellectual disabilities. Cardiac fibrogenesis is a common pathophysiological process seen during chronic and stress-induced accelerated cardiac aging. While adequate production of extracellular matrix (ECM) proteins is necessary for post-injury wound healing, excessive synthesis and accumulation of extracellular matrix protein in the stressed or injured hearts causes decreased or loss of lusitropy that leads to cardiac failure...
November 24, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27869310/trpv4-regulates-tight-junctions-and-affects-differentiation-in-a-cell-culture-model-of-the-corneal-epithelium
#9
Jacqueline Martínez-Rendón, Erika Sánchez-Guzmán, Angélica Rueda, James González, Rosario Gulias-Cañizo, Guillermo Aquino-Jarquín, Federico Castro-Muñozledo, Refugio García-Villegas
TRPV4 (transient receptor potential vanilloid 4) is a cation channel activated by hypotonicity, moderate heat, or shear stress. We describe the expression of TRPV4 during the differentiation of a corneal epithelial cell model, RCE1(5T5) cells. TRPV4 is a late differentiation feature that is concentrated in the apical membrane of the outmost cell layer of the stratified epithelia. Ca(2+) imaging experiments showed that TRPV4 activation with GSK1016790A produced an influx of calcium that was blunted by the specific TRPV4 blocker RN-1734...
November 21, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27869309/roles-of-notch-signaling-in-adipocyte-progenitor-cells-and-mature-adipocytes
#10
REVIEW
Tizhong Shan, Jiaqi Liu, Weiche Wu, Ziye Xu, Yizhen Wang
Adipose tissues, composed with mature adipocytes and preadipocytic stromal/stem cells, play crucial roles in whole body energy metabolism and regenerative medicine. Mature adipocytes are derived and differentiated from mesenchymal stem cells (MSCs) or preadipocytes. This differentiation process, also called adipogenesis, is regulated by several signaling pathways and transcription factors. Notch1 signaling is a highly conserved pathway that is indispensable for stem cell hemostasis and tissue development. In adipocyte progenitor cells, Notch1 signaling regulates the adipogenesis process including proliferation and differentiation of the adipocyte progenitor cells in vitro...
November 21, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27869308/signaling-in-the-auditory-system-implications-in-hair-cell-regeneration-and-hearing-function
#11
REVIEW
Rahul Mittal, Luca H Debs, Desiree Nguyen, Amit P Patel, M'hamed Grati, Jeenu Mittal, Denise Yan, Adrien A Eshraghi, Xue Zhong Liu
Ear is a sensitive organ involved in hearing and balance function. The complex signaling network in the auditory system plays a crucial role in maintaining normal physiological function of the ear. The inner ear is comprised of a variety of host signaling pathways working in synergy to deliver clear sensory messages. Any disruption, as minor as it can be, has the potential to affect this finely tuned system with temporary or permanent sequelae including vestibular deficits and hearing loss. Mutations linked to auditory symptoms, whether inherited or acquired, are being actively researched for ways to reverse, silence, or suppress them...
November 21, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27869306/roles-of-multifunctional-cop9-signalosome-complex-in-cell-fate-and-implications-for-drug-discovery
#12
REVIEW
Ping Li, Longxiang Xie, Yinzhong Gu, Jiang Li, Jianping Xie
The eight subunits containing COP9 signalosome (CSN) complex, is highly conserved among eukaryotes. CSN, identified as a negative regulator of photomorphogenesis, has also been demonstrated to be important in proteolysis, cellular signal transduction and cell cycle regulation in various eukaryotic organisms. This review mainly summarizes the roles of CSN in cell cycle regulation, signal transduction and apoptosis, and its potential as diagnostic biomarkers, drug targets for cancer and infectious diseases. This article is protected by copyright...
November 21, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27859269/homocysteine-as-a-pathological-biomarker-for-bone-disease
#13
REVIEW
Jyotirmaya Behera, Jyoti Bala, Mohammed Nuru, Suresh C Tyagi, Neetu Tyagi
In the last few decades, perturbation in methyl-group and homocysteine (Hcy) balance have emerged as independent risk factors in a number of pathological conditions including neurodegenerative disease, cardiovascular dysfunction, cancer development, autoimmune disease and kidney disease. Recent studies report Hcy to be a newly recognized risk factor for osteoporosis. Elevated Hcy levels are known to modulate osteoclastgenesis by causing detrimental effects on bone via oxidative stress induced metalloproteinase-mediated extracellular matrix degradation and decrease in bone blood flow...
November 18, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27859236/postnatal-hyperplasic-effects-of-actriib-blockade-in-a-severely-dystrophic-muscle
#14
C Nielsen, R M Potter, C Borowy, K Jacinto, R Kumar, C G Carlson
The efficacy of two ActRIIB ligand trapping agents (RAP-031, RAP-435) in treating muscular dystrophy was examined by determining their morphological effects on the severely dystrophic triangularis sterni (TS) muscle of the mdx mouse, a model for Duchenne muscular dystrophy. These agents trap all endogenous ligands to the ActRIIB receptor and thereby block myostatin signaling in a highly selective manner. Short (1 month) and long term (3 months) in vivo treatment of 1 month old mdx mice increased myonuclei and fiber cross section (FCS) density but did not alter individual fiber size...
November 18, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27859242/meeting-report-4-th-european-seminars-in-virology-on-oncogenic-and-oncolytic-viruses-in-bertinoro-bologna-italy
#15
Alberto Reale, Lorenzo Messa, Adriana Vitiello, Arianna Loregian, Giorgio Palù
The 4(th) European Seminars in Virology (EuSeV), which was focused on oncogenic and oncolytic viruses, was held in Bertinoro (Bologna), Italy, from June 10 to 12, 2016. This article summarizes the plenary lectures and aims to illustrate the main topics discussed at 4(th) EuSeV, which brought together knowledge and expertise in the field of oncogenic and oncolytic viruses from all over the world. The meeting was divided in two parts, "Mechanisms of Viral Oncogenesis" and "Viral Oncolysis and Immunotherapy", which were both focused on dissecting the complex and multi-factorial interplay between cancer and human viruses and on exploring new anti-cancer strategies...
November 16, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27861886/oligodendrocyte-progenitor-cells-directly-utilize-lactate-for-promoting-cell-cycling-and-differentiation
#16
Yoshinori Ichihara, Toru Doi, Youngjae Ryu, Motoshi Nagao, Yasuhiro Sawada, Toru Ogata
Oligodendrocyte progenitor cells (OPCs) undergo marked morphological changes to become mature oligodendrocytes, but the metabolic resources for this process have not been fully elucidated. Although lactate, a metabolic derivative of glycogen, has been reported to be consumed in oligodendrocytes as a metabolite, and to ameliorate hypomyelination induced by low glucose conditions, it is not clear about the direct contribution of lactate to cell cycling and differentiation of OPCs, and the source of lactate for remyelination...
November 15, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27861865/mechanical-stress-regulates-bone-metabolism-through-micrornas
#17
REVIEW
Yu Yuan, Lingli Zhang, Xiaoyang Tong, Miao Zhang, Yilong Zhao, Jianming Guo, Le Lei, Xi Chen, Jennifer Tickner, Jiake Xu, Jun Zou
There are many lines of evidence indicating that mechanical stress regulates bone metabolism and promotes bone growth. BMP, Wnt, ERK1/2, and OPG/RANKL are the main molecules thought to regulate the effects of mechanical loading on bone formation. Recently, microRNAs were found to be involved in bone cell proliferation and differentiation, regulating the balance of bone formation and bone resorption. Emerging evidence indicates that microRNAs also participate in mechanical stress-mediated bone metabolism, and is associated with disuse induced osteoporosis or osteopenia...
November 15, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27859225/cd93-as-a-potential-target-in-neovascular-age-related-macular-degeneration
#18
Gian Marco Tosi, Elena Caldi, Barbara Parolini, Paolo Toti, Giovanni Neri, Federica Nardi, Claudio Traversi, Gabriele Cevenini, Davide Marigliani, Elisabetta Nuti, Tommaso Bacci, Federico Galvagni, Maurizio Orlandini
In patients with age-related macular degeneration (AMD), choroidal neovascularization is the major cause of severe visual loss. In these patients, the persistence of neovascular growth despite vascular endothelial growth factor-A blockage needs the discovery of new endothelial cell targets. The glycoprotein CD93, highly expressed in activated endothelial cells, has been recently involved in the regulation of the angiogenic process both as transmembrane and soluble protein. Choroidal neovascular membranes from patients affected by AMD were examined by immunofluorescence using anti-CD93 and anti-von Willebrand factor antibodies...
November 15, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27861880/the-multifaceted-roles-of-primary-cilia-in-the-regulation-of-stem-cell-properties-and-functions
#19
REVIEW
Rui Lyu, Jun Zhou
Stem cells are a unique class of cells that are capable of self-renewal and differentiation into multiple lineages. An increasing number of studies have suggested that both embryonic and adult stem cells possess primary cilia, antenna-like structures protruding from cell surfaces that are critical for sensing and transducing environmental cues. The primary cilium appears to regulate stem cells in multiple aspects, such as lineage specification and stemness maintenance. Understanding the role of primary cilia in the control of stem cell behavior could lead to the identification of new targets for regenerative therapies...
November 11, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27861874/a-real-world-multicentre-retrospective-study-of-paclitaxel-bevacizumab-and-maintenance-therapy-as-first-line-for-her2-negative-metastatic-breast-cancer
#20
Teresa Gamucci, Lucia Mentuccia, Clara Natoli, Isabella Sperduti, Alessandra Cassano, Andrea Michelotti, Luigi Di Lauro, Domenico Sergi, Alessandra Fabi, Maria G Sarobba, Paolo Marchetti, Maddalena Barba, Emanuela Magnolfi, Marcello Maugeri-Saccà, Ernesto Rossi, Valentina Sini, Antonino Grassadonia, Domenica Pellegrini, Antonino Astone, Cecilia Nisticò, Franco Angelini, Angela Vaccaro, Arianna Pellegrino, Claudia De Angelis, Michela Palleschi, Luca Moscetti, Ilaria Bertolini, Simonetta Buglioni, Antonio Giordano, Laura Pizzuti, Patrizia Vici
Bevacizumab in combination with taxanes in HER2-negative metastatic breast cancer (MBC) patients has shown improved progression-free survival (PFS), despite the lack of clear overall survival (OS) benefit. We performed a retrospective analysis to evaluate the impact of paclitaxel-bevacizumab and of maintenance therapy with bevacizumab (BM) and endocrine therapy (ET) in the real-world practice. We identified 314 HER2-negative MBC patients treated in 12 cancer centers. Overall, the median PFS and OS were 14 and 40 months, respectively...
November 11, 2016: Journal of Cellular Physiology
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