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caveolin 1

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https://www.readbyqxmd.com/read/27929047/caveolin-1-is-an-aggresome-inducing-protein
#1
Ajit Tiwari, Courtney A Copeland, Bing Han, Caroline A Hanson, Krishnan Raghunathan, Anne K Kenworthy
Caveolin-1 (Cav1) drives the formation of flask-shaped membrane invaginations known as caveolae that participate in signaling, clathrin-independent endocytosis and mechanotransduction. Overexpression or mutations of Cav1 can lead to its mistrafficking, including its accumulation in a perinuclear compartment previously identified as the Golgi complex. Here, we show that in the case of overexpressed Cav1-GFP, this perinuclear compartment consists of cytoplasmic inclusion bodies generated in response to the accumulation of aggregates of misfolded proteins, known as aggresomes...
December 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27927230/molecular-control-of-nitric-oxide-synthesis-through-enos-and-caveolin-1-interaction-regulates-osteogenic-differentiation-of-adipose-derived-stem-cells-by-modulation-of-wnt-%C3%AE-catenin-signaling
#2
Nadeeka Bandara, Saliya Gurusinghe, Shiang Yong Lim, Haying Chen, Shuangfeng Chen, Dawei Wang, Bryan Hilbert, Le-Xin Wang, Padraig Strappe
BACKGROUND: Nitric oxide (NO) plays a role in a number of physiological processes including stem cell differentiation and osteogenesis. Endothelial nitric oxide synthase (eNOS), one of three NO-producing enzymes, is located in a close conformation with the caveolin-1 (CAV-1(WT)) membrane protein which is inhibitory to NO production. Modification of this interaction through mutation of the caveolin scaffold domain can increase NO release. In this study, we genetically modified equine adipose-derived stem cells (eASCs) with eNOS, CAV-1(WT), and a CAV-1(F92A) (CAV-1(WT) mutant) and assessed NO-mediated osteogenic differentiation and the relationship with the Wnt signaling pathway...
December 7, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27925619/moderate-hyperoxia-induces-extracellular-matrix-remodeling-by-human-fetal-airway-smooth-muscle-cells
#3
Elizabeth R Vogel, Rodney D Britt, Arij Faksh, Ine Kuipers, Hitesh Pandya, Y S Prakash, Richard J Martin, Christina M Pabelick
BACKGROUND: Premature infants are at increased risk for airway diseases, such as wheezing and asthma, because of early exposure to risk factors including hyperoxia. As in adult asthma, airway remodeling and increased extracellular matrix (ECM) deposition is involved. METHODS: We assessed the impact of 24-72 h of moderate hyperoxia (50%) on human fetal airway smooth muscle (fASM) ECM deposition through western blot, modified in-cell western, and zymography techniques...
December 7, 2016: Pediatric Research
https://www.readbyqxmd.com/read/27917946/basigin-can-be-a-therapeutic-target-to-restore-the-retinal-vascular-barrier-function-in-the-mouse-model-of-diabetic-retinopathy
#4
Mitsuru Arima, Dan Cui, Tokuhiro Kimura, Koh-Hei Sonoda, Tatsuro Ishibashi, Satoshi Matsuda, Eiji Ikeda
Despite the advance in medical technology, diabetic retinopathy (DR) is still an intractable disease which leads to the damage of retinal cells and finally the visual loss. Impairment of retinal vascular barrier triggered by an admixture of multiple inflammatory cytokines is a core of pathophysiology of DR. Therefore, the molecules involved commonly in multiple cytokines-induced impairment of vascular barrier would be the targets of curative treatment of DR. Here, we demonstrate that basigin, a transmembrane molecule expressed in neural barrier-forming endothelial cells, is the molecule essential for vascular barrier impairment which is shared by various triggers including VEGF, TNFα and IL-1β...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27915034/atheroprotective-role-of-caveolin-1-and-enos-in-an-innovative-transplantation-model-is-mainly-mediated-by-local-effects
#5
Johannes Mierke, Marian Christoph, Christian Pfluecke, Stefanie Jellinghaus, Carsten Wunderlich, Ruth H Strasser, Karim Ibrahim, David M Poitz
Endothelial dysfunction is crucial in the initiation of atherosclerosis, which is associated with a lack of nitric oxide. The endothelial NO synthase (eNOS) is responsible for constitutive synthesis of NO and inhibited by caveolin-1 (Cav1). In the current study, we examined the influence on intima formation through single and combined deletion of eNOS and Cav1 with a focus on differentiation of local and systemic effects. A sex-mismatch transplantation of denudated aortae from female C57BL/6n (WT), Cav1(-/-), eNOS(-/-) and Cav1(-/-)/eNOS(-/-) (C/e(--/--)) mice in common carotid artery of male WT mice was performed...
November 30, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27909976/erratum-to-regulation-of-caveolin-1-and-junction-proteins-by-bfgf-contributes-to-the-integrity-of-blood-spinal-cord-barrier-and-functional-recovery
#6
Li-Bing Ye, Xi-Chong Yu, Qing-Hai Xia, Ying Yang, Da-Qing Chen, Fenzan Wu, Xiao-Jie Wei, Xie Zhang, Bin-Bin Zheng, Xiao-Bing Fu, Hua-Zi Xu, Xiao-Kun Li, Jian Xiao, Hong-Yu Zhang
No abstract text is available yet for this article.
December 1, 2016: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/27906063/characterization-of-a-multiprotein-complex-involved-in-excitation-transcription-coupling-of-skeletal-muscle
#7
Manuel Arias-Calderón, Gonzalo Almarza, Alexis Díaz-Vegas, Ariel Contreras-Ferrat, Denisse Valladares, Mariana Casas, Héctor Toledo, Enrique Jaimovich, Sonja Buvinic
BACKGROUND: Electrical activity regulates the expression of skeletal muscle genes by a process known as "excitation-transcription" (E-T) coupling. We have demonstrated that release of adenosine 5'-triphosphate (ATP) during depolarization activates membrane P2X/P2Y receptors, being the fundamental mediators between electrical stimulation, slow intracellular calcium transients, and gene expression. We propose that this signaling pathway would require the proper coordination between the voltage sensor (dihydropyridine receptor, DHPR), pannexin 1 channels (Panx1, ATP release conduit), nucleotide receptors, and other signaling molecules...
April 11, 2016: Skeletal Muscle
https://www.readbyqxmd.com/read/27903584/src-independent-erk-signaling-through-the-%C3%AE-3-isoform-of-na-k-atpase
#8
Namrata Madan, Yunhui Xu, Qiming Duan, Moumita Banerjee, Isabel Larre, Sandrine V Pierre, Zijian Xie
The Na/K-ATPase α1 polypeptide supports both ion pumping and signaling functions. The Na/K-ATPase α3 polypeptide differs from α1 in both its primary structure and its tissue distribution. Alpha3 expression seems particularly important in neurons, and recent clinical evidence supports a unique role of this isoform in normal brain function. The nature of this specific role of α3 has remained elusive, because the ubiquitous presence of α1 has hindered efforts to characterize α3-specific functions in mammalian cell systems...
November 30, 2016: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/27899819/4-cholesten-3-one-suppresses-lung-adenocarcinoma-metastasis-by-regulating-translocation-of-hmgb1-hif1%C3%AE-and-caveolin-1
#9
Jinben Ma, Guobin Fu, Jing Wu, Shaoxian Han, Lishan Zhang, Ming Yang, Yong Yu, Mengyuan Zhang, Yanliang Lin, Yibing Wang
Metastasis is a great challenge in lung adenocarcinoma (ADC) therapy. Cholesterol has been implicated in ADC metastasis. 4-cholesten-3-one, as cholesterol metabolite and analog, can substitute membrane cholesterol and increase membrane fluidity. In this study, we explored the possibility that 4-cholesten-3-one inhibited ADC metastasis. Low-dose 4-cholesten-3-one significantly restrained ADC cells migration and invasion with little effects on cells viabilities. Further investigation showed that 4-cholesten-3-one promoted ROS generation, which transiently activated AMPKα1, increased HIF1α expression, reduced Bcl-2 expression and caused autophagy...
September 22, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27895190/caveolin-1-deletion-prevents-hypertensive-vascular-remodeling-induced-by-angiotensin-ii
#10
Steven J Forrester, Katherine J Elliott, Tatsuo Kawai, Takashi Obama, Michael J Boyer, Kyle J Preston, Zhen Yan, Satoru Eguchi, Victor Rizzo
It has been proposed that membrane microdomains, caveolae, in vascular cells are critical for signal transduction and downstream functions induced by angiotensin II (AngII). We have tested our hypothesis that caveolin-1 (Cav1), a major structural protein of vascular caveolae, plays a critical role in the development of vascular remodeling by AngII via regulation of epidermal growth factor receptor and vascular endothelial adhesion molecule-1. Cav1(-/-) and control Cav(+/+) mice were infused with AngII for 2 weeks to induce vascular remodeling and hypertension...
January 2017: Hypertension
https://www.readbyqxmd.com/read/27894957/dna-methylation-profiling-identifies-ptrf-cavin-1-as-a-novel-tumor-suppressor-in-ewing-sarcoma-when-co-expressed-with-caveolin-1
#11
Juan Huertas-Martínez, Franck Court, Santiago Rello-Varona, David Herrero-Martín, Olga Almacellas-Rabaiget, Miguel Sáinz-Jaspeado, Silvia Garcia-Monclús, Laura Lagares-Tena, Raquel Buj, Lourdes Hontecillas-Prieto, Ana Sastre, Daniel Azorin, Xavier Sanjuan, Roser López-Alemany, Sebastian Moran, Josep Roma, Soledad Gallego, Jaume Mora, Xavier García Del Muro, Paloma H Giangrande, Miquel A Peinado, Javier Alonso, Enrique de Alava, Dave Monk, Manel Esteller, Oscar M Tirado
Epigenetic modifications have been shown to be important in developmental tumors as Ewing sarcoma. We profiled the DNA methylation status of 15 primary tumors, 7 cell lines, 10 healthy tissues and 4 human mesenchymal stem cells lines samples using the Infinium Human Methylation 450k. Differential methylation analysis between Ewing sarcoma and reference samples revealed 1,166 hypermethylated and 864 hypomethylated CpG sites (Bonferroni p<0.05, δ-β-value with absolute difference of >0.20) corresponding to 392 and 470 genes respectively...
November 25, 2016: Cancer Letters
https://www.readbyqxmd.com/read/27886057/age-related-modulations-of-aqp4-and-caveolin-1-in-the-hippocampus-predispose-the-toxic-effect-of-phoneutria-nigriventer-spider-venom
#12
Edilene S Soares, Leila M Stávale, Monique C P Mendonça, Andressa Coope, Maria Alice da Cruz-Höfling
We have previously demonstrated that Phoneutria nigriventer venom (PNV) causes blood-brain barrier (BBB) breakdown, swelling of astrocytes end-feet and fluid permeation into brain interstitium in rats. Caveolae and water channels respond to BBB alterations by co-participation in shear stress response and edema formation/resolution. Herein, we showed post-natal developmental-related changes of two BBB-associated transporter proteins: the endothelial caveolin-1 (Cav-1), the major scaffolding protein from caveolae frame, and the astroglial aquaporin-4 (AQP4), the main water channel protein expressed in astrocytic peri-vascular end-feet processes, in the hippocampus of rats intraperitoneally-administered PNV...
November 23, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27882143/expression-of-connexin-43-ion-channels-and-ca-2-handling-proteins-in-rat-pulmonary-vein-cardiomyocytes
#13
Yaqiong Xiao, Xue Cai, Andrew Atkinson, Sunil Jit Logantha, Mark Boyett, Halina Dobrzynski
Atrial fibrillation (AF) is the most common cardiac arrhythmia. AF is thought to be triggered by ectopic beats, originating primarily in the myocardial sleeves surrounding the pulmonary veins (PVs). The mechanisms underlying these cardiac arrhythmias remain unclear. To investigate this, frozen sections of heart and lung tissue from adult rats without arrhythmia were obtained in different planes, stained with Masson's trichrome, and immunolabeled for connexin 43 (Cx43), caveolin-3 (Cav3), hyperpolarization-activated cyclic nucleotide-gated channel 4 (HCN4), Nav1...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27882079/overexpression-of-caveolin-1-reduces-taxol-resistance-in-human-osteosarcoma-cells-by-attenuating-pi3k-akt-jnk-dependent-autophagy
#14
Jian Guan, Zhenchao Yuan, Juliang He, Zhenjie Wu, Bin Liu, Xiang Lin, Ligen Mo, Hao Mo
Caveolin-1 (CAV-1), which is an oncoprotein and a tumor suppressor, is highly expressed in normal osteoblasts. Although researchers have investigated its role in human osteosarcoma, the mechanism of caveolin-1 action in osteosarcoma remains unknown. In the present study, Saos-2 and U-2 OS cells were cultured with a continuous induction protocol of gradually increasing Taxol concentration for 6 months to establish drug-resistant cell lines. CAV-1 expression levels in osteosarcoma cells were detected via western blotting and quantitative polymerase chain reaction...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27875556/mxa-is-a-novel-regulator-of-endosome-associated-transcriptional-signaling-by-bone-morphogenetic-proteins-4-and-9-bmp4-and-bmp9
#15
Huijuan Yuan, Pravin B Sehgal
There is confusion about the role that IFN-α plays in the pathogenesis of pulmonary arterial hypertension (PAH) with different investigators reporting a causative or a protective role. There is now clear evidence in PAH pathogenesis for the involvement of BMP4 and BMP9 signaling, and its disruption by mutations in BMPR2. In the present study, we investigated MxA, an IFN-α-inducible cytoplasmic dynamin-family GTPase for effects on BMP4/9 signaling, including in the presence of PAH-disease-associated mutants of BMPR2...
2016: PloS One
https://www.readbyqxmd.com/read/27866222/the-cytoskeletal-protein-septin-11-is-associated-with-human-obesity-and-is-involved-in-adipocyte-lipid-storage-and-metabolism
#16
Natalia Moreno-Castellanos, Amaia Rodríguez, Yoana Rabanal-Ruiz, Alejandro Fernández-Vega, José López-Miranda, Rafael Vázquez-Martínez, Gema Frühbeck, María M Malagón
AIMS/HYPOTHESIS: Septins are newly identified members of the cytoskeleton that have been proposed as biomarkers of a number of diseases. However, septins have not been characterised in adipose tissue and their relationship with obesity and insulin resistance remains unknown. Herein, we characterised a member of this family, septin 11 (SEPT11), in human adipose tissue and analysed its potential involvement in the regulation of adipocyte metabolism. METHODS: Gene and protein expression levels of SEPT11 were analysed in human adipose tissue...
November 19, 2016: Diabetologia
https://www.readbyqxmd.com/read/27853367/caveolin-1-contributes-to-realgar-nanoparticle-therapy-in-human-chronic-myelogenous-leukemia-k562-cells
#17
Dan Shi, Yan Liu, Ronggang Xi, Wei Zou, Lijun Wu, Zhiran Zhang, Zhongyang Liu, Chao Qu, Baoli Xu, Xiaobo Wang
Chronic myelogenous leukemia (CML) is characterized by the t(9;22) (q34;q11)-associated Bcr-Abl fusion gene, which is an essential element of clinical diagnosis. As a traditional Chinese medicine, realgar has been widely used for the treatment of various diseases for >1,500 years. Inspired by nano-drug, realgar nanoparticles (NPs) have been prepared with an average particle size of <100 nm in a previous work. Compared with coarse realgar, the realgar NPs have higher bioavailability. As a principal constituent protein of caveolae, caveolin-1 (Cav-1) participates in regulating various cellular physiological and pathological processes including tumorigenesis and tumor development...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27852311/caveolin-1-in-the-regulation-of-cell-metabolism-a-cancer-perspective
#18
REVIEW
Zeribe Chike Nwosu, Matthias Philip Ebert, Steven Dooley, Christoph Meyer
Caveolin-1 (CAV1) is an oncogenic membrane protein associated with endocytosis, extracellular matrix organisation, cholesterol distribution, cell migration and signaling. Recent studies reveal that CAV1 is involved in metabolic alterations - a critical strategy adopted by cancer cells to their survival advantage. Consequently, research findings suggest that CAV1, which is altered in several cancer types, influences tumour development or progression by controlling metabolism. Understanding the molecular interplay between CAV1 and metabolism could help uncover druggable metabolic targets or pathways of clinical relevance in cancer therapy...
November 16, 2016: Molecular Cancer
https://www.readbyqxmd.com/read/27852071/interferon-induced-transmembrane-protein-1-ifitm1-is-required-for-the-progression-of-colorectal-cancer
#19
Ita Novita Sari, Ying-Gui Yang, Lan Thi Hanh Phi, Hyungjoo Kim, Moo Jun Baek, Dongjun Jeong, Hyog Young Kwon
Interferon-induced transmembrane protein 1 (IFITM1) has been shown to be implicated in multiple cancers, yet little is known about biological significance of IFITM1 in colorectal cancer. Here, we show that IFITM1 is highly expressed in metastatic colorectal cancer cell lines as well as colorectal patient-derived tumor samples, and its expression is associated with a poor prognosis of the disease. Also, IFITM1 depletion resulted in a significant reduction in the mobility of cancer cell lines, whereas ectopic expression of IFITM1 promoted the migration of cancer cells...
November 12, 2016: Oncotarget
https://www.readbyqxmd.com/read/27847332/intralipid-protects-the-heart-in-late-pregnancy-against-ischemia-reperfusion-injury-via-caveolin2-stat3-gsk-3%C3%AE-pathway
#20
Jingyuan Li, Gregoire Ruffenach, Georgios Kararigas, Christine M Cunningham, Negar Motayagheni, Neusha Barakai, Soban Umar, Vera Regitz-Zagrosek, Mansoureh Eghbali
BACKGROUND: We recently demonstrated that the heart of late pregnant (LP) rodents is more prone to ischemia/reperfusion (I/R) injury compared to non-pregnant rodents. Lipids, particularly polyunsaturated fatty acids, have received special attention in the field of cardiovascular research. Here, we explored whether Intralipid (ITLD) protects the heart against I/R injury in LP rodents and investigated the mechanisms underlying this protection. METHODS AND RESULTS: In-vivo female LP rat hearts or ex-vivo isolated Langendorff-perfused LP mouse hearts were subjected to ischemia followed by reperfusion with PBS or ITLD (one bolus of 5mg/kg of 20% in in-vivo and 1% in ex-vivo)...
November 12, 2016: Journal of Molecular and Cellular Cardiology
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