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https://www.readbyqxmd.com/read/28534974/taz-overexpression-is-associated-with-epithelial-mesenchymal-transition-in-cisplatin-resistant-gastric-cancer-cells
#1
Liang Ge, Dong-Song Li, Fei Chen, Ji-Dong Feng, Bai Li, Tie-Jun Wang
Gastric cancer is one of the common malignant diseases. The poor treatment outcome is mainly due to chemotherapeutic resistance. Therefore, it is important to determine the molecular mechanism of drug resistance in gastric cancer. To explore the mechanisms of cisplatin resistance in gastric cancer cells, several approaches were performed including MTT assay, real-time RT-PCR, western blot analysis, migration and invasion assays, wound healing assay, and transfection. We found that cisplatin-resistant (CR) gastric cancer cells acquired epithelial-mesenchymal transition (EMT) phenotype...
May 16, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28528906/warts-signaling-controls-organ-and-body-growth-through-regulation-of-ecdysone
#2
Morten E Moeller, Stanislav Nagy, Stephan U Gerlach, Karen C Soegaard, E Thomas Danielsen, Michael J Texada, Kim F Rewitz
Coordination of growth between individual organs and the whole body is essential during development to produce adults with appropriate size and proportions [1, 2]. How local organ-intrinsic signals and nutrient-dependent systemic factors are integrated to generate correctly proportioned organisms under different environmental conditions is poorly understood. In Drosophila, Hippo/Warts signaling functions intrinsically to regulate tissue growth and organ size [3, 4], whereas systemic growth is controlled via antagonistic interactions of the steroid hormone ecdysone and nutrient-dependent insulin/insulin-like growth factor (IGF) (insulin) signaling [2, 5]...
May 17, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28527651/clinical-efficacy-of-cycling-empirical-antibiotic-therapy-for-febrile-neutropenia-in-pediatric-cancer-patients
#3
Hideto Teranishi, Yuhki Koga, Hisanori Nishio, Wakako Kato, Hiroaki Ono, Shunsuke Kanno, Kentaro Nakashima, Hidetoshi Takada
BACKGROUND: Febrile neutropenia (FN) is the main treatment-related cause of mortality among children with cancer, as the prolonged use of broad-spectrum antibiotics can lead to antibiotic resistance in these patients. Antibiotic cycling has been reported to limit the emergence of antibiotic-resistant bacteria among adult patients. However, no studies have evaluated pediatric patients with FN. METHODS: Between September 2011 and February 2014, 126 pediatric cancer patients were admitted to our center for chemotherapy and/or hematopoietic stem cell transplantation and were included in this study...
May 17, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28516432/measurement-of-piperacillin-plasma-concentrations-in-cancer-patients-with-suspected-infection
#4
Tobias Rachow, Verena Schlüter, Sibylle Bremer-Streck, Udo Lindig, Sebastian Scholl, Peter Schlattmann, Michael Kiehntopf, Andreas Hochhaus, Marie von Lilienfeld-Toal
BACKGROUND: Piperacillin (PIP) in combination with tazobactam is commonly used for anti-infective treatment in cancer patients. PIP exerts a time-dependent killing. Thus, the maintenance of plasma concentrations above a pre-defined target concentration for a pre-defined time may be relevant for optimal efficacy. It is assumed that PIP-plasma concentrations above the clinical breakpoint of the target pathogen [Pseudomonas aeruginosa, clinical breakpoint at minimal inhibitory concentration (MIC) 16 mg/L] should be reached for 100% of the dosing interval or >4xMIC (64 mg/L) for 50% of the dosing interval...
May 17, 2017: Infection
https://www.readbyqxmd.com/read/28515468/cardiolipin-content-linoleic-acid-composition-and-tafazzin-expression-in-response-to-skeletal-muscle-overload-and-unload-stimuli
#5
Val A Fajardo, John S Mikhaeil, Cameron F Leveille, Caitlin Saint, Paul J LeBlanc
Cardiolipin (CL) is a unique mitochondrial phospholipid that, in skeletal muscle, is enriched with linoleic acid (18:2n6). Together, CL content and CL 18:2n6 composition are critical determinants of mitochondrial function. Skeletal muscle is comprised of slow and fast fibers that have high and low mitochondrial content, respectively. In response to overloading and unloading stimuli, these muscles undergo a fast-to-slow oxidative fiber type shift and a slow-to-fast glycolytic fiber type shift, respectively, with a concomitant change in mitochondrial content...
May 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28515457/crystal-structure-of-taz-tead-complex-reveals-a-distinct-interaction-mode-from-that-of-yap-tead-complex
#6
Hung Yi Kristal Kaan, Siew Wee Chan, Siew Kim Joyce Tan, Fusheng Guo, Chun Jye Lim, Wanjin Hong, Haiwei Song
The Hippo pathway is a tumor suppressor pathway that is implicated in the regulation of organ size. The pathway has three components: the upstream regulatory factors, the kinase core, and the downstream transcriptional machinery, which consists of YAP, TAZ (transcription co-activators) and TEAD (transcription factor). Formation of YAP/TAZ-TEAD complexes leads to the transcription of growth-promoting genes. Herein, we report the crystal structure of TAZ-TEAD4 complex, which reveals two binding modes. The first is similar to the published YAP-TEAD structure...
May 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28513598/yap-taz-link-cell-mechanics-to-notch-signalling-to-control-epidermal-stem-cell-fate
#7
Antonio Totaro, Martina Castellan, Giusy Battilana, Francesca Zanconato, Luca Azzolin, Stefano Giulitti, Michelangelo Cordenonsi, Stefano Piccolo
How the behaviour of somatic stem cells (SCs) is influenced by mechanical signals remains a black-box in cell biology. Here we show that YAP/TAZ regulation by cell shape and rigidity of the extracellular matrix (ECM) dictates a pivotal SC decision: to remain undifferentiated and grow, or to activate a terminal differentiation programme. Notably, mechano-activation of YAP/TAZ promotes epidermal stemness by inhibition of Notch signalling, a key factor for epidermal differentiation. Conversely, YAP/TAZ inhibition by low mechanical forces induces Notch signalling and loss of SC traits...
May 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28512636/expression-of-yap-taz-in-keratocystic-odontogenic-tumors-and-its-possible-association-with-proliferative-behavior
#8
Qi-Wen Man, Yan-Qi Ma, Jin-Yuan Liu, Yi Zhao, Bing Liu, Yi-Fang Zhao
The aim of this study is to clarify whether YAP/TAZ is involved in the pathogenesis and proliferative growth of keratocystic odontogenic tumor (KCOT). The expression levels of YAP/TAZ and downstream proteins and genes in normal oral mucosa (OM) and KCOT were determined and compared by immunohistochemistry and real-time quantitative PCR. The results showed that the expression of YAP/TAZ and downstream proteins (Cyr61, CTGF) was significantly upregulated in KCOT with upregulation of Ki-67 compared to OM. Importantly, the mRNA levels of transcription factors (TEAD1, TEAD4, and RUNX2) and cell cycle related genes (CDK2, PCNA), which interact with the transcriptional coactivators YAP/TAZ, are also upregulated in the KCOT...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28504697/the-transcriptional-coactivator-taz-regulates-reciprocal-differentiation-of-th17-cells-and-treg-cells
#9
Jing Geng, Shujuan Yu, Hao Zhao, Xiufeng Sun, Xun Li, Ping Wang, Xiaolin Xiong, Lixin Hong, Changchuan Xie, Jiahui Gao, Yiran Shi, Jiaqi Peng, Randy L Johnson, Nengming Xiao, Linrong Lu, Jiahuai Han, Dawang Zhou, Lanfen Chen
An imbalance in the lineages of immunosuppressive regulatory T cells (Treg cells) and the inflammatory TH17 subset of helper T cells leads to the development of autoimmune and/or inflammatory disease. Here we found that TAZ, a coactivator of TEAD transcription factors of Hippo signaling, was expressed under TH17 cell-inducing conditions and was required for TH17 differentiation and TH17 cell-mediated inflammatory diseases. TAZ was a critical co-activator of the TH17-defining transcription factor RORγt. In addition, TAZ attenuated Treg cell development by decreasing acetylation of the Treg cell master regulator Foxp3 mediated by the histone acetyltransferase Tip60, which targeted Foxp3 for proteasomal degradation...
May 15, 2017: Nature Immunology
https://www.readbyqxmd.com/read/28504269/yap-regulates-cell-mechanics-by-controlling-focal-adhesion-assembly
#10
Giorgia Nardone, Jorge Oliver-De La Cruz, Jan Vrbsky, Cecilia Martini, Jan Pribyl, Petr Skládal, Martin Pešl, Guido Caluori, Stefania Pagliari, Fabiana Martino, Zuzana Maceckova, Marian Hajduch, Andres Sanz-Garcia, Nicola Maria Pugno, Gorazd Bernard Stokin, Giancarlo Forte
Hippo effectors YAP/TAZ act as on-off mechanosensing switches by sensing modifications in extracellular matrix (ECM) composition and mechanics. The regulation of their activity has been described by a hierarchical model in which elements of Hippo pathway are under the control of focal adhesions (FAs). Here we unveil the molecular mechanism by which cell spreading and RhoA GTPase activity control FA formation through YAP to stabilize the anchorage of the actin cytoskeleton to the cell membrane. This mechanism requires YAP co-transcriptional function and involves the activation of genes encoding for integrins and FA docking proteins...
May 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28502290/deubiquitinase-yod1-the-potent-activator-of-yap-in-hepatomegaly-and-liver-cancer
#11
Youngeun Kim, Eek-Hoon Jho
The advances of our understanding in the Hippo signaling as a key regulatory pathway of proliferation and apoptosis have provided mechanical insights for controlling organ size and tumorigenicity. Recently, much attention was given to the regulation of LATS1/2 (large tumor suppressor) kinases that phosphorylate YAP/TAZ, a transcriptional co-activator in the Hippo pathway, and control the level and nuclear localization of YAP/TAZ. In our recent work, we showed that deubiquitinase YOD1 stabilizes ITCH and facilitates ITCH-mediated LATS1/2 ubiquitination and degradation, which results in increased YAP/TAZ level...
May 15, 2017: BMB Reports
https://www.readbyqxmd.com/read/28498465/identification-of-a-novel-hypertrophic-cardiomyopathy-associated-mutation-using-targeted-next-generation-sequencing
#12
Yue Zhao, Yue Feng, Xiaoxue Ding, Shuwei Dong, Hong Zhang, Jiahuan Ding, Xueshan Xia
Hypertrophic cardiomyopathy (HCM), one of the most common forms of myocardial diseases, is the major cause of sudden cardiac death in young adults and competitive athletes. Analyses of gene mutations associated with HCM are valuable for its molecular diagnosis, genetic counseling, and management of familial HCM. To dissect the relationship between the clinical presentation and gene mutations of HCM, the genetic characterizations of 19 HCM-related genes in 18 patients (8 cases from 6 pedigrees with familial HCM and 10 cases without familial HCM) were detected using next-generation sequencing (NGS)...
May 11, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28489874/tafazzin-taz-promotes-the-tumorigenicity-of-cervical-cancer-cells-and-inhibits-apoptosis
#13
Mei Chen, Yuan Zhang, Peng-Sheng Zheng
Tafazzin (TAZ) is often aberrantly expressed in some cancers, including rectal cancer and thyroid neoplasms. However, the function of TAZ in cervical cancer cells remains unknown. This study aims to explore the expression and function of TAZ in cervical cancer cells. Here, we determined the expression of TAZ protein in normal cervical tissue (NC, n = 27), high-grade squamous intraepithelial lesions (HSIL, n = 26) and squamous cervical carcinoma (SCC, n = 41) by immunohistochemistry, the expression of TAZ protein gradually increased from NC to HSIL to SCC...
2017: PloS One
https://www.readbyqxmd.com/read/28487958/effects-of-taz-on-human-dental-pulp-stem-cell-proliferation-and-migration
#14
Songbo Tian, Xiaochao Tian, Yanping Liu, Fusheng Dong, Jie Wang, Xuqian Liu, Zhiyong Zhang, Huizhen Chen
Transcriptional coactivator with PDZ‑binding motif (TAZ) acts as the key downstream regulatory target in the Hippo signaling pathway. TAZ overexpression has been reported to promote cellular proliferation and induce epithelial‑mesenchymal transition in human mammary epithelial cells. However, the effects of TAZ in the regulation of human dental pulp stem cell (hDPSC) proliferation and migration, as well as the molecular mechanisms underlying its actions, remain to be elucidated. The present study demonstrated that TAZ was expressed in hDPSCs...
June 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28486867/hospital-length-of-stay-among-patients-receiving-intermittent-versus-prolonged-piperacillin-tazobactam-infusion-in-the-intensive-care-units
#15
Jeannie D Chan, Timothy H Dellit, John B Lynch
OBJECTIVES: We sought to evaluate clinical outcomes of intensive care unit (ICU) patients following a hospital-wide initiative of prolonged piperacillin/tazobactam (PIP/TAZ) infusion. METHODS: Retrospective observational study of patients >18 years old who was hospitalized in the ICU receiving PIP/TAZ for >72 hours during the preimplementation (June 1, 2010 to May 31, 2011) and postimplementation (July 7, 2011 to June 30, 2014) periods. RESULTS: There were 124 and 429 patients who met inclusion criteria with average age of 54...
January 1, 2017: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/28486190/icariin-stimulates-osteogenic-differentiation-of-rat-bone-marrow-stromal-stem-cells-by-increasing-taz-expression
#16
QiuShi Wei, MinCong He, MeiHui Chen, ZhenQiu Chen, Fan Yang, HaiBin Wang, Jin Zhang, Wei He
Icariin, the major ingredient of Herba Epimedii, promotes the osteogenic differentiation of rat bone marrow stromal cells (rBMSCs) and exerts protective effects against bone loss and increases bone regeneration, but the underlying signaling pathway by which icariin affects osteogenic differentiation remain unclear. Transcriptional coactivator with PDZ-binding motif (TAZ) is a transcriptional modulator of the Hippo signaling pathway, which plays an important role in the osteogenic differentiation of BMSCs by activating Runx2 gene during the terminal osteogenic differentiation...
May 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28486099/a-tiam-double-hit-to-oppose-yap-taz
#17
Luca Azzolin, Stefano Piccolo
In this issue of Cancer Cell, Diamantopoulou et al. uncover dual mechanisms of inhibiting YAP/TAZ by TIAM1 that oppose invasiveness of colorectal cancer cells: TIAM1 interacts with TAZ in the cytoplasm to promote TAZ degradation by the destruction complex, whereas it antagonizes binding of TAZ/YAP to TEAD in the nucleus.
May 8, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28483529/tead1-mediates-the-oncogenic-activities-of-hippo-yap1-signaling-in-osteosarcoma
#18
Jiwei Chai, Shijie Xu, Fengbo Guo
Hippo signaling pathway is an evolutionarily conserved developmental network that governs the downstream transcriptional co-activators, YAP and TAZ, which bind to and activate the output of TEADs that responsible for cell proliferation, apoptosis, and stem cell self renewal. Emerging evidence has shown the tumor suppressor properties of Hippo signaling. However, limited knowledge is available concerning the downstream transcription factors of Hippo pathway in osteosarcoma (OS). In this study, we demonstrated that TEAD1 was the major transcription factor of Hippo signaling pathway in OS...
May 5, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28475306/electrospun-silk-fibroin-nanofibrous-scaffolds-with-two-stage-hydroxyapatite-functionalization-for-enhancing-the-osteogenic-differentiation-of-human-adipose-derived-mesenchymal-stem-cells
#19
Eunkyung Ko, Jong Seung Lee, Hyunryung Kim, Sung Yeun Yang, Dasom Yang, Kisuk Yang, JiYong Lee, Jisoo Shin, Hee Seok Yang, WonHyoung Ryu, Seung-Woo Cho
The development of functional scaffolds with improved osteogenic potential is important for successful bone formation and mineralization in bone tissue engineering. In this study, we developed a functional electrospun silk fibroin (SF) nanofibrous scaffold functionalized with two-stage hydroxyapatite (HAp) particles, using mussel adhesive-inspired polydopamine (PDA) chemistry. HAp particles were first incorporated into SF scaffolds during the electrospinning process, and then immobilized onto the electrospun SF nanofibrous scaffolds containing HAp via PDA-mediated adhesive chemistry...
May 5, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28467351/mutant-p53-protein-and-the-hippo-transducers-yap-and-taz-a-critical-oncogenic-node-in-human-cancers
#20
REVIEW
Maria Ferraiuolo, Lorena Verduci, Giovanni Blandino, Sabrina Strano
p53 protein is a well-known tumor suppressor factor that regulates cellular homeostasis. As it has several and key functions exerted, p53 is known as "the guardian of the genome" and either loss of function or gain of function mutations in the TP53 coding protein sequence are involved in cancer onset and progression. The Hippo pathway is a key regulator of developmental and regenerative physiological processes but if deregulated can induce cell transformation and cancer progression. The p53 and Hippo pathways exert a plethora of fine-tuned functions that can apparently be in contrast with each other...
May 3, 2017: International Journal of Molecular Sciences
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