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https://www.readbyqxmd.com/read/29696467/ocular-sebaceous-gland-carcinoma-an-update-of-the-literature
#1
REVIEW
Maria Vittoria Cicinelli, Swathi Kaliki
PURPOSE: To review and summarize the newest update on ocular sebaceous gland carcinoma (SGC) focusing on diagnosis and treatment. METHODS: A PubMed search was carried out using the terms "Sebaceous Carcinoma", "Meibomian Gland Carcinoma", "Sebaceous Cell Carcinoma", and "Sebaceous Gland Carcinoma". All studies published in English up to October 2017 were included in this review. RESULTS: Globally, the overall incidence of SGC is increasing making it the third most common eyelid malignancy after basal cell carcinoma (BCC) and squamous cell carcinoma...
April 25, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29692611/cantharidin-encapsulated-thermal-sensitive-liposomes-coated-with-gold-nanoparticles-for-enhanced-photothermal-therapy-on-a431-cells
#2
Sijia Wang, Jing Xin, Luwei Zhang, Yicheng Zhou, Cuiping Yao, Bing Wang, Jing Wang, Zhenxi Zhang
Purpose: Plasmonic nanostructure-mediated photothermal therapy (PTT) is a promising alternative therapy for the treatment of skin cancer and other diseases. However, the insufficient efficiency of PTT at irradiation levels tolerable to tissues and the limited biodegradability of nanomaterials are still crucial challenges. In this study, a novel nanosystem for PTT based on liposome-nanoparticle assemblies (LNAs) was established. Materials and methods: Thermal-sensitive liposomes (TSLs) encapsulating cantharidin (CTD) were coated with gold nanoparticles (GNPs) and used in near-infrared (NIR) illumination-triggered PTT and thermally induced disruption on A431 cells...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29665004/thiostrepton-degrades-mutant-p53-by-eliciting-an-autophagic-response-in-sw480-cells
#3
Dhanya Kalathil, Manu Prasad, Maharrish Chelladurai, Samu John, Asha S Nair
Mutations in p53 gene are one of the hallmarks of tumor development. Specific targeting of mutant p53 protein has a promising role in cancer therapeutics. Our preliminary observation showed destabilization of mutant p53 protein in SW480, MiaPaCa and MDAMB231 cell lines upon thiostrepton treatment. In order to elucidate the mechanism of thiostrepton triggered mutant p53 degradation, we explored the impact of proteasome inhibition on activation of autophagy. Combined treatment of thiostrepton and cycloheximide/chloroquine prevented the degradation of mutant p53 protein, reinforcing autophagy as the means of mutant p53 destabilization...
April 17, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29644001/bag3-promotes-tumour-cell-proliferation-by-regulating-egfr-signal-transduction-pathways-in-triple-negative-breast-cancer
#4
Sarah Shields, Emer Conroy, Tony O'Grady, Alo McGoldrick, Kate Connor, Mark P Ward, Zivile Useckaite, Eugene Dempsey, Rebecca Reilly, Yue Fan, Anthony Chubb, David Gomez Matallanas, Elaine W Kay, Darran O'Connor, Amanda McCann, William M Gallagher, Judith A Coppinger
Triple-negative breast cancer (TNBC), is a heterogeneous disease characterised by absence of expression of the estrogen receptor (ER), progesterone receptor (PR) and lack of amplification of human epidermal growth factor receptor 2 (HER2). TNBC patients can exhibit poor prognosis and high recurrence stages despite early response to chemotherapy treatment. In this study, we identified a pro-survival signalling protein BCL2- associated athanogene 3 (BAG3) to be highly expressed in a subset of TNBC cell lines and tumour tissues...
March 20, 2018: Oncotarget
https://www.readbyqxmd.com/read/29555102/exploring-the-multifaceted-roles-of-heat-shock-protein-b8-hspb8-in-diseases
#5
REVIEW
Fazhao Li, Han Xiao, Zhiping Hu, Fangfang Zhou, Binbin Yang
HSPB8 is a member of ubiquitous small heat shock protein (sHSP) family, whose expression is induced in response to a wide variety of unfavorable physiological and environmental conditions. Investigation of HSPB8 structure indicated that HSPB8 belongs to the group of so-called intrinsically disordered proteins and possesses a highly flexible structure. Unlike most other sHSPs, HSPB8 tends to form small-molecular-mass oligomers and exhibits substrate-dependent chaperone activity. In cooperation with BAG3, the chaperone activity of HSPB8 was reported to be involved in the delivery of misfolded proteins to the autophagy machinery...
March 13, 2018: European Journal of Cell Biology
https://www.readbyqxmd.com/read/29552495/clinicopathological-features-associated-with-the-bag3-pro209leu-mutation
#6
A Schänzer, S Rupp, B Garvalov, A Hahn
No abstract text is available yet for this article.
June 2018: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/29514624/lack-of-genetic-susceptibility-in-takotsubo-cardiomyopathy-a-case-control-study
#7
Emma Mattsson, Peter Saliba-Gustafsson, Ewa Ehrenborg, Per Tornvall
BACKGROUND: Takotsubo cardiomyopathy (TCM), also known as "broken heart syndrome", is a type of heart failure characterized by transient ventricular dysfunction in the absence of obstructive coronary lesions. Although associated with increased levels of catecholamines, pathophysiological mechanisms are unknown. Relapses and family heritability indicate a genetic predisposition. Several small studies have investigated associations between three different loci; the β1-adrenic receptor (ADRB1), G-protein-coupled receptor kinase 5 (GRK5), Bcl-associated athanogene 3 (BAG3) and TCM but no consensus has been reached...
March 7, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/29487711/identification-of-bag3-target-proteins-in-anaplastic-thyroid-cancer-cells-by-proteomic-analysis
#8
Francesca Galdiero, Anna Maria Bello, Anna Spina, Anna Capiluongo, Sophie Liuu, Margot De Marco, Alessandra Rosati, Mario Capunzo, Maria Napolitano, Emilia Vuttariello, Mario Monaco, Daniela Califano, Maria Caterina Turco, Gennaro Chiappetta, Joëlle Vinh, Giovanni Chiappetta
BAG3 protein is an apoptosis inhibitor and is highly expressed in Anaplastic Thyroid Cancer. We investigated the entire set of proteins modulated by BAG3 silencing in the human anaplastic thyroid 8505C cancer cells by using the Stable-Isotope Labeling by Amino acids in Cell culture strategy combined with mass spectrometry analysis. By this approach we identified 37 up-regulated and 54 down-regulated proteins in BAG3-silenced cells. Many of these proteins are reportedly involved in tumor progression, invasiveness and resistance to therapies...
January 30, 2018: Oncotarget
https://www.readbyqxmd.com/read/29484408/bag3-promotes-chondrosarcoma-progression-by-upregulating-the-expression-of-%C3%AE-catenin
#9
Huijuan Shi, Wenfang Chen, Yu Dong, Xiaofang Lu, Wenhui Zhang, Liantang Wang
To investigate the roles of B‑cell lymphoma‑2 associated athanogene 3 (BAG3) in human chondrosarcoma and the potential mechanisms, the expression levels of BAG3 were detected in the present study, and the associations between BAG3 and clinical pathological parameters, clinical stage as well as the survival of patients were analyzed. The present study detected BAG3 mRNA and protein expression in the normal cartilage cell line HC‑a and in SW1353 chondrosarcoma cells by reverse transcription‑quantitative polymerase chain reaction and western blot analysis...
April 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29484407/regulation-of-angiotensin-ii-induced-b-cell-lymphoma-2-associated-athanogene-3-expression-in-vascular-smooth-muscle-cells
#10
Shasha Yu, Yintao Chen, Shuang Chen, Ning Ye, Yan Li, Yingxian Sun
Previous studies have demonstrated that angiotensin II (Ang II) is involved in the process of atherosclerosis and vascular restenosis through its proinflammatory effect. Bcl‑2‑associated athanogene 3 (BAG3) had been suggested to be associated with proliferation, migration and invasion in many types of tumor. However, the role of BAG3 among the proliferative process of vascular smooth muscle cells (VSMCs) induced by Ang II, to the best of our knowledge, remains to be investigated. The present study demonstrated that in growth‑arrested VSMCs, Ang II‑induced VSMC proliferation, accompanied by increased BAG3 mRNA and protein expression levels in a dose‑ and time‑dependent manner...
April 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29484366/bag3-promotes-the-phenotypic-transformation-of-primary-rat-vascular-smooth-muscle-cells-via-trail
#11
Yao Fu, Ye Chang, Shuang Chen, Yuan Li, Yintao Chen, Guozhe Sun, Shasha Yu, Ning Ye, Chao Li, Yingxian Sun
Under normal physiological condition, the mature vascular smooth muscle cells (VSMCs) show differentiated phenotype. In response to various environmental stimuluses, VSMCs convert from the differentiated phenotype to dedifferentiated phenotype characterized by the increased ability of proliferation/migration and the reduction of contractile ability. The phenotypic transformation of VSMCs played an important role in atherosclerosis. Both Bcl-2-associated athanogene 3 (BAG3) and tumor necrosis factor-related apopt-osis inducing ligand (TRAIL) involved in apoptosis...
May 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29462756/bag3-overexpression-and-cytoprotective-autophagy-mediate-apoptosis-resistance-in-chemoresistant-breast-cancer-cells
#12
Chandan Kanta Das, Benedikt Linder, Florian Bonn, Florian Rothweiler, Ivan Dikic, Martin Michaelis, Jindrich Cinatl, Mahitosh Mandal, Donat Kögel
Target-specific treatment modalities are currently not available for triple-negative breast cancer (TNBC), and acquired chemotherapy resistance is a primary obstacle for the treatment of these tumors. Here we employed derivatives of BT-549 and MDA-MB-468 TNBC cell lines that were adapted to grow in the presence of either 5-Fluorouracil, Doxorubicin or Docetaxel in an aim to identify molecular pathways involved in the adaptation to drug-induced cell killing. All six drug-adapted BT-549 and MDA-MB-468 cell lines displayed cross resistance to chemotherapy and decreased apoptosis sensitivity...
March 2018: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/29445088/cancer-cell-responses-to-hsp70-inhibitor-jg-98-comparison-with-hsp90-inhibitors-and-finding-synergistic-drug-combinations
#13
Julia A Yaglom, Yongmei Wang, Amy Li, Zhenghu Li, Stephano Monti, Ilya Alexandrov, Xiongbin Lu, Michael Y Sherman
Hsp70 is a promising anti-cancer target. Our JG-98 series of Hsp70 inhibitors show anti-cancer activities affecting both cancer cells and tumor-associated macrophages. They disrupt Hsp70 interaction with a co-chaperone Bag3 and affect signaling pathways important for cancer development. Due to a prior report that depletion of Hsp70 causes similar responses as depletion of Hsp90, interest to Hsp70 inhibitors as drug prototypes is hampered by potential similarity of their effects to effects of Hsp90 inhibitors...
February 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29441908/microrna-340-induces-apoptosis-by-downregulation-of-bag3-in-ovarian-cancer-skov3-cells
#14
Fei Qu, Xiufen Wang
Aberrant expression of miR-340 has been found in several kinds of cancers including ovarian cancer. Pro-apoptotic and anti-metastasis roles of miR-340 in ovarian cancer have also been reported; however, the underling molecular mechanisms by which miR-340 suppresses ovarian cancer are still unclear. This study focused on the role and molecular mechanism of miR-340 in ovarian cancer. Human ovarian carcinoma SKOV3 cells were used and transfected with miR-340 mimic, miR-340 inhibitor and their correspondingly negative controls (mimic control and inhibitor control)...
August 1, 2017: Die Pharmazie
https://www.readbyqxmd.com/read/29409895/bcl-2-associated-athanogene-3-bag3-is-an-enhancer-of-small-heat-shock-protein-turnover-via-activation-of-autophagy-in-the-heart
#15
Yui Inomata, Shouta Nagasaka, Kazuki Miyate, Yuta Goto, Chizuru Hino, Chihiro Toukairin, Rieko Higashio, Kinji Ishida, Tomoyuki Saino, Masamichi Hirose, Hideki Tsumura, Atsushi Sanbe
Bcl-2-associated athanogene 3 (BAG3) is strongly expressed in both cardiac and skeletal muscle. A recent study showed that BAG3 may play a protective role in muscles. Little is known, however, regarding the detailed role of BAG3 in cardiac muscle. To better understand the functional role of cardiac BAG3 in the heart, we generated transgenic (TG) mice that overexpress BAG3. A decrease in fractional shortening, and the induction of cardiac atrial natriuretic peptide, were observed in BAG3 TG mice. Moreover, a marked reduction in the protein level of small HSPs was detected in BAG3 TG mouse hearts...
February 19, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29405094/hspb8-and-bag3-cooperate-to-promote-spatial-sequestration-of-ubiquitinated-proteins-and-coordinate-the-cellular-adaptive-response-to-proteasome-insufficiency
#16
Solenn M Guilbert, Herman Lambert, Marc-Antoine Rodrigue, Margit Fuchs, Jacques Landry, Josée N Lavoie
BCL2-associated athanogene (BAG)-3 is viewed as a platform that would physically and functionally link distinct classes of molecular chaperones of the heat shock protein (HSP) family for the stabilization and clearance of damaged proteins. In this study, we show that HSPB8, a member of the small heat shock protein subfamily, cooperates with BAG3 to coordinate the sequestration of harmful proteins and the cellular adaptive response upon proteasome inhibition. Silencing of HSPB8, like depletion of BAG3, inhibited targeting of ubiquitinated proteins to the juxtanuclear aggresome, a mammalian system of spatial quality control...
February 5, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29338979/dysregulated-autophagy-in-restrictive-cardiomyopathy-due-to-pro209leu-mutation-in-bag3
#17
A Schänzer, S Rupp, S Gräf, D Zengeler, C Jux, H Akintürk, L Gulatz, N Mazhari, T Acker, R Van Coster, B K Garvalov, A Hahn
Myofibrillary myopathies (MFM) are hereditary myopathies histologically characterized by degeneration of myofibrils and aggregation of proteins in striated muscle. Cardiomyopathy is common in MFM but the pathophysiological mechanisms are not well understood. The BAG3-Pro209Leu mutation is associated with early onset MFM and severe restrictive cardiomyopathy (RCM), often necessitating heart transplantation during childhood. We report on a young male patient with a BAG3-Pro209Leu mutation who underwent heart transplantation at eight years of age...
March 2018: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29323723/haplo-insufficiency-of-bcl2-associated-athanogene-3-in-mice-results-in-progressive-left-ventricular-dysfunction-%C3%AE-adrenergic-insensitivity-and-increased-apoptosis
#18
Valerie D Myers, Dhanendra Tomar, Muniswamy Madesh, JuFang Wang, Jianliang Song, Xue-Qian Zhang, Manish K Gupta, Farzaneh G Tahrir, Jennifer Gordon, Joseph M McClung, Christopher D Kontos, Kamel Khalili, Joseph Y Cheung, Arthur M Feldman
Bcl2-associated athanogene 3 (BAG3) is a 575 amino acid protein that is found predominantly in the heart, skeletal muscle, and many cancers. Deletions and truncations in BAG3 that result in haplo-insufficiency have been associated with the development of dilated cardiomyopathy. To study the cellular and molecular events attributable to BAG3 haplo-insufficiency we generated a mouse in which one allele of BAG3 was flanked by loxP recombination sites (BAG3fl/+ ). Mice were crossed with α-MHC-Cre mice in order to generate mice with cardiac-specific haplo-insufficiency (cBAG3+/-) and underwent bi-weekly echocardiography to assess their cardiac phenotype...
January 11, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29316663/modulation-of-protein-quality-control-and-proteasome-to-autophagy-switch-in-immortalized-myoblasts-from-duchenne-muscular-dystrophy-patients
#19
Marion Wattin, Loïc Gaweda, Pascale Muller, Mathieu Baritaud, Charlotte Scholtes, Chloé Lozano, Kathrin Gieseler, Carole Kretz-Remy
The maintenance of proteome integrity is of primary importance in post-mitotic tissues such as muscle cells; thus, protein quality control mechanisms must be carefully regulated to ensure their optimal efficiency, a failure of these processes being associated with various muscular disorders. Duchenne muscular dystrophy (DMD) is one of the most common and severe forms of muscular dystrophies and is caused by mutations in the dystrophin gene. Protein quality control modulations have been diversely observed in degenerating muscles of patients suffering from DMD or in animal models of the disease...
January 7, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29304346/nrf2-mediates-the-expression-of-bag3-and-autophagy-cargo-adaptor-proteins-and-tau-clearance-in-an-age-dependent-manner
#20
Maoping Tang, Changyi Ji, Susanne Pallo, Irfan Rahman, Gail V W Johnson
During aging, decreased efficiency of nuclear factor (erythroid-derived 2)-like 2 (Nrf2) activation and autophagic processes in the brain may be a contributing factor in the pathogenesis of neurodegenerative diseases such as Alzheimer's disease. Therefore, we analyzed the expression of Bcl-2-associated athanogene 3, a cochaperone that mediates autophagy, and the autophagy adaptors NBR1, NDP52, and sequestosome 1/p62 in the brains of 4-, 8-, and 12-month-old wild-type and Nrf2 knockout (-/-) mice. We also analyzed the levels of total tau and phospho-tau species...
March 2018: Neurobiology of Aging
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