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https://www.readbyqxmd.com/read/29163160/aberrant-wnt-beta-catenin-pathway-activation-in-dialysate-induced-peritoneal-fibrosis
#1
Yuanyuan Guo, Lin Sun, Li Xiao, Rong Gou, Yudong Fang, Yan Liang, Ruiqiang Wang, Ningjun Li, Fuyou Liu, Lin Tang
Peritoneal dialysis (PD)-associated peritoneal fibrosis is a chronic progress which induces ultrafiltration failure. It remains a challenge to prevent the progression of PD-associated fibrosis in clinic practice. Wnt/β-catenin pathway plays important role in many severe fibrotic diseases, here we investigated its contribution to the development of peritoneal damage. We isolated mesothelial cells (MC) from the effluent of PD patients and found that the expressions of Wnt1, Wnt5a, β-catenin, and LEF1 were increased in patients with more than 1-year PD compared with patients who just started with PD (<1 month)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29152652/effect-of-wnt1-and-wnt5a-on-the-development-of-dopaminergic-neurons-and-toxicity-induced-by-combined-exposure-to-paraquat-and-maneb-during-gestation-and-lactation
#2
Jing Ma, Cui Huang, Kun Ma, Yan-Ping Wu, Bai-Xiang Li, Yan Sun
Paraquat (PQ) and maneb (MB) are widely used herbicides. Wingless (Wnt) proteins serve a role in the development and differentiation of dopaminergic neurons. Previous studies demonstrated that combined exposure to PQ and MB damages dopaminergic neurons in the midbrain. Effects of PQ and MB exposure on midbrain Wnt proteins have also been previously reported. In the present study, from the 5th day of gestation to weaning of the offspring, pregnant Sprague‑Dawley rats were administrated saline, or PQ and MB at two different doses: high, 15 mg/kg body weight PQ + 45 mg/kg body weight MB; or low, 10 mg/kg body weight PQ + 30 mg/kg body weight MB...
October 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29149835/forkhead-transcription-factors-formulating-a-foxo-target-for-cognitive-loss
#3
Kenneth Maiese
BACKGROUND: With almost 47 million individuals worldwide suffering from some aspect of dementia, it is clear that cognitive loss impacts a significant proportion of the global population. Unfortunately, definitive treatments to resolve or prevent the onset of cognitive loss are limited. In most cases such care is currently non-existent prompting the need for novel treatment strategies. METHODS: Mammalian forkhead transcription factors of the O class (FoxO) are one such avenue of investigation that offer an exciting potential to bring new treatments forward for disorders that involve cognitive loss...
November 15, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/29147753/defective-wnt-signaling-associates-with-bone-marrow-fibrosis-a-cross-sectional-cohort-study-in-a-family-with-wnt1-osteoporosis
#4
R E Mäkitie, R Niinimäki, S Kakko, T Honkanen, P E Kovanen, O Mäkitie
This study explores bone marrow function in patients with defective WNT1 signaling. Bone marrow samples showed increased reticulin and altered granulopoiesis while overall hematopoiesis was normal. Findings did not associate with severity of osteoporosis. These observations provide new insight into the role of WNT signaling in bone marrow homeostasis. INTRODUCTION: WNT signaling regulates bone homeostasis and survival and self-renewal of hematopoietic stem cells. Aberrant activation may lead to osteoporosis and bone marrow pathology...
November 16, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/29129025/assessment-of-circulating-wnt1-inducible-signalling-pathway-protein-1-wisp-1-ccn4-as-a-novel-biomarker-of-obesity
#5
Christopher Tacke, Krasimira Aleksandrova, Miriam Rehfeldt, Veronica Murahovschi, Mariya Markova, Margrit Kemper, Silke Hornemann, Ulrike Kaiser, Caroline Honig, Christiana Gerbracht, Stefan Kabisch, Tina Hörbelt, D Margriet Ouwens, Martin O Weickert, Heiner Boeing, Andreas F H Pfeiffer, Olga Pivovarova, Natalia Rudovich
WNT1 inducible signaling pathway protein 1 (WISP-1/CCN4) is a novel adipokine, which is upregulated in obesity, and induces a pro-inflammatory response in macrophages in-vitro. Preclinical observations suggested WISP-1/CCN4 as a potential candidate for novel obesity therapy targeting adipose tissue inflammation. Whether circulating levels of WISP-1/CCN4 in humans are altered in obesity and/or type 2 diabetes (T2DM) and in the postprandial state, however, is unknown. This study assessed circulating WISP-1/CCN4 levels in a) paired liquid meal tests and hyperinsulinemic- euglycemic clamps (cohort I, n = 26), b) healthy individuals (cohort II, n = 207) and c) individuals with different stages of obesity and glucose tolerance (cohort III, n = 253)...
November 11, 2017: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/29116339/%C3%AE-arrestin-1-deficiency-ameliorates-renal-interstitial-fibrosis-by-blocking-wnt1-%C3%AE-catenin-signaling-in-mice
#6
Huiyan Xu, Quanxin Li, Jiang Liu, Jiaqing Zhu, Liang Li, Ziying Wang, Yan Zhang, Yu Sun, Jinpeng Sun, Rong Wang, Fan Yi
Despite substantial progress being made in understanding the mechanisms contributing to the pathogenesis of renal fibrosis, there are only a few therapies available to treat or prevent renal fibrosis in clinical use today. Therefore, identifying the key cellular and molecular mediators involved in the pathogenesis of renal fibrosis will provide new therapeutic strategy for treating patients with chronic kidney disease (CKD). β-Arrestin-1, a member of β-arrestin family, not only is a negative adaptor of G protein-coupled receptors (GPCRs), but also acts as a scaffold protein and regulates a diverse array of cellular functions independent of GPCR activation...
November 7, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/29104955/crosstalk-between-mlo-y4-osteocytes-and-c2c12-muscle-cells-is-mediated-by-the-wnt-%C3%AE-catenin-pathway
#7
Jian Huang, Sandra Romero-Suarez, Nuria Lara, Chenglin Mo, Simon Kaja, Leticia Brotto, Sarah L Dallas, Mark L Johnson, Katharina Jähn, Lynda F Bonewald, Marco Brotto
We examined the effects of osteocyte secreted factors on myogenesis and muscle function. MLO-Y4 osteocyte-like cell conditioned media (CM) (10%) increased ex vivo soleus muscle contractile force by ~25%. MLO-Y4 and primary osteocyte CM (1-10%) stimulated myogenic differentiation of C2C12 myoblasts, but 10% osteoblast CMs did not enhance C2C12 cell differentiation. Since WNT3a and WNT1 are secreted by osteocytes, and the expression level of Wnt3a is increased in MLO-Y4 cells by fluid flow shear stress, both were compared, showing WNT3a more potent than WNT1 in inducing myogenesis...
October 2017: JBMR Plus
https://www.readbyqxmd.com/read/29104639/snail1-is-positively-correlated-with-atrial-fibrosis-in-patients-with-atrial-fibrillation-and-rheumatic-heart-disease
#8
Furong Guo, Xin Yi, Mingjiang Li, Jinrong Fu, Sha Li
The present study investigated the association between Snail1 and atrial fibrosis in patients with atrial fibrillation (AF) and rheumatic heart disease (RHD) and to determine the possible mechanism underlying this interrelation. A total of 19 patients were included in the current study and were divided into two groups: A sinus rhythm (SR) group (n=9) and an AF group (n=10). All patients underwent heart valve replacement surgery, during which ~200 mg right atrium tissue was obtained. Hematoxylin and eosin and Masson's trichrome-stained sections were used to evaluate the morphological changes of cardiomyocytes and the level of fibrosis...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29089076/-screening-of-key-molecules-of-hab18g-cd147-signal-transduction-pathway-in-human-hepatoma-cells
#9
Hongwei Zhou, Yibing Yao, Yaojie Liang, Zhihong Wang, Xiaoyan Zhou, Weiping Guo, Xiangmin Yang, Jianli Jiang, Junzhong Sun, Zhinan Chen
Objective To screen the differentially expressed key molecules of HAb18G/CD147 signal transduction pathway in human hepatoma cells. Methods The total RNA was extracted from SMMC-7721 and T7721 cells, which were stably transfected and overexpressed HAb18G/CD147, and then detected by signal transduction-related microarray to identify differentially expressed key molecules. Results The microarray data indicated that there were 13 differentially expressed genes between T7721 and SMMC-7721 cells. In T7721 cell line which overexpressed HAb18G/CD147, the down-regulated genes included bone morphogenetic protein-2 (BMP-2), BMP-5, endothelin-1 (ET-1), Wnt1-induced signaling proteins-2/CCN5 (WISP-2), cysteine-rich 61/CCN1 (Cyr61), prostate stem cell antigen (PSCA), and the up-regulated genes included interleukin-10 receptor α (IL-10Rα), IL-6, IL-8, CXCL2, mitochondrial superoxide dismutase 2 (SOD2), B factor and βig-h3...
September 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/29065410/a-novel-positive-feedback-loop-between-ntsr1-and-wnt-%C3%AE-catenin-contributes-to-tumor-growth-of-glioblastoma
#10
Hualiang Xiao, Ying Zeng, Qiushi Wang, Shirong Wei, Xiangfeng Zhu
BACKGROUND/AIMS: Neurotensin (NTS), an intestinal hormone, is profoundly implicated in cancer progression through binding its primary receptor NTSR1. The conserved Wnt/β-Catenin pathway regulates cell proliferation and differentiation via activation of the β-catenin/T-cell factor (TCF) complex and subsequent modulation of a set of target genes. In this study, we aimed to uncover the potential connection between NTS/NTSR1 signaling and Wnt/β-Catenin pathway. METHODS: Genetic silencing, pharmacological inhibition and gain-of-function studies as well as bioinformatic analysis were performed to uncover the link between NTS/ NTSR1 signaling and Wnt/β-Catenin pathway...
October 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29058812/the-effects-of-curcumin-on-hct-116-cells-proliferation-and-apoptosis-via-the-mir-491-peg10-pathway
#11
Bai Li, Chong Shi, Bo Li, Jing-Ming Zhao, Lei Wang
Paternally expressed gene-10 (PEG10) could participate in several carcinomas and might be regulated by miR-491. To now, miR-491 was found to play an important role in the sensitivity and mechanism of drug usage in the treatment of colorectal cancer, and drug resistance is a key factor to affect the disease healing. In this study, miR-491, PEG10, Wnt1 and β-catenin expression levels and their correlation with colorectal cancer were assessed in cancer tissues and adjacent parts. And the target relationship between PEG10 and miR-491 was verified...
October 23, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29044715/bayesian-genome-wide-association-analysis-for-body-weight-in-farmed-atlantic-salmon-salmo-salar-l
#12
G M Yoshida, J P Lhorente, R Carvalheiro, J M Yáñez
We performed a genome-wide association study to detect markers associated with growth traits in Atlantic salmon. The analyzed traits included body weight at tagging (BWT) and body weight at 25 months (BW25M). Genotypes of 4662 animals were imputed from the 50K SNP chip to the 200K SNP chip using fimpute software. The markers were simultaneously modeled using Bayes C to identify genomic regions associated with the traits. We identified windows explaining a maximum of 3.71% and 3.61% of the genetic variance for BWT and BW25M respectively...
October 17, 2017: Animal Genetics
https://www.readbyqxmd.com/read/29039446/protective-effect-of-autophagy-in-neural-ischemia-and-hypoxia-negative-regulation-of-the-wnt-%C3%AE-catenin-pathway
#13
Zhen-Yu Shi, Jie-Xin Deng, Su Fu, Lai Wang, Qiang Wang, Bin Liu, Yong-Qiang Li, Jin-Bo Deng
Autophagy is a highly conserved process of self-digestion to promote cell survival in response to nutrient starvation and other metabolic stresses. However, whether ischemic-hypoxic (IH) injury-induced autophagy acts as a neuroprotective mechanism or leads to neuroinjury is a subject of debate. It is known that autophagy is regulated by signaling pathways, including the mammalian target of rapamycin pathway. However, in neural IH injury, whether other signaling pathways are involved in the regulation of autophagy remains to be fully elucidated...
September 28, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29031500/transcription-and-signaling-regulators-in-developing-neuronal-subtypes-of-mouse-and-human-enteric-nervous-system
#14
Fatima Memic, Viktoria Knoflach, Khomgrit Morarach, Rebecca Sadler, Catia Laranjeira, Jens Hjerling-Leffler, Erik Sundström, Vassilis Pachnis, Ulrika Marklund
BACKGROUND AND AIMS: The enteric nervous system (ENS) regulates gastrointestinal function via different subtypes of neurons, organized into fine-tuned neural circuits. It is not clear how cell diversity is created within the embryonic ENS-information required for development of cell-based therapies and models of enteric neuropathies. We aimed to identify proteins that regulate ENS differentiation and network formation. METHODS: We generated and compared RNA expression profiles of the entire ENS, ENS progenitor cells, and non-ENS gut cells of mice, collected at embryonic days 11...
October 11, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29016745/cxcl12-cxcr4-signalling-plays-an-essential-role-in-proper-patterning-of-aortic-arch-and-pulmonary-arteries
#15
Bo-Gyeong Kim, Yong Hwan Kim, Edward L Stanley, Eva M Garrido-Martin, Young Jae Lee, S Paul Oh
Aims: Chemokine CXCL12 (stromal derived factor 1: SDF1) has been shown to play important roles in various processes of cardiovascular development. In recent avian studies, CXCL12 signalling has been implicated in guidance of cardiac neural crest cells for their participation in the development of outflow tract and cardiac septum. The goal of this study is to investigate the extent to which CXCL12 signalling contribute to the development of aortic arch and pulmonary arteries in mammals...
November 1, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28992081/apical-secretion-of-wnt1-in-polarized-epithelial-cells-is-regulated-by-exocyst-mediated-trafficking
#16
Hideki Yamamoto, Akira Sato, Akira Kikuchi
Wnts are glycosylated proteins secreted from various cell types including mesenchymal, hematopoietic and epithelial cells. Directional secretion of Wnts in polarized epithelial cells is unique; Wnt11 is secreted apically, whereas Wnt5a and Wnt3a are secreted basolaterally. Here, we found that Wnt1 is equivalently secreted both apically and basolaterally in MDCK cells. Wnt1 was modified with a complex- or hybrid-type glycan at Asn29 and Asn359 and the high-mannose- or hybrid-type glycan at Asn316. Although glycosylation of Wnt11 at the N-terminal site was shown to be essential for its apical secretion, glycosylation of Asn29 of Wnt1 was not required...
November 1, 2017: Journal of Biochemistry
https://www.readbyqxmd.com/read/28988845/a-bombyx-homolog-of-ovo-is-a-segmentation-gene-that-acts-downstream-of-bm-wnt1-bombyx-wnt1-homolog
#17
Hajime Nakao
Insect embryogenesis is divided into long and short/intermediate germ types. The long germ type may exhibit Drosophila-like hierarchical segmentation mechanisms, whereas the short/intermediate type assumes some repeating mechanisms that are considered to be ancestral. Embryogenesis in Bombyx mori possesses both characteristics. Here, Bombyx ovo homolog (Bm-ovo) was identified as a gene involved in segmentation. Ovo is a Drosophila gene that encodes a zinc finger transcription factor and studies on its homolog functions in other systems have suggested that it acts as a switch to enable the initiation of differentiation from a progenitor cell state...
October 5, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28977758/nh4cl-affects-the-expression-of-wnt-%C3%AE-catenin-pathway-in-hepatocytes
#18
Lu Bai, Jingjing Li, Xiaorui Liu, Shasha Li, Fulei Li, Yanling Chen, Zujiang Yu
We intend to explore whether NH4Cl influences the viability and regulates the expression of Wnt/β-catenin pathway in hepatocytes.The Chang liver cell line was used and culture with different concentrations of NH4Cl (2.5, 5, 10, 20, 40 and 50mM/l) for 12h, 24h and 48h, respectively. The viability of hepatocytes was detected by MTT assay. The mRNA and protein expression level was analyzed with qRT-PCR and Western blotting, respectively. NH4Cl concentration significantly affects the viability of hepatocytes. With the increase of NH4Cl concentration, the viability of hepatocytes was decreased, accordingly...
October 4, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28960674/requisite-role-of-vasohibin-2-in-spontaneous-gastric-cancer-formation-and-accumulation-of-cancer-associated-fibroblasts
#19
Yasuhiro Suzuki, Shuji Kitahara, Takuya Suematsu, Masanobu Oshima, Yasufumi Sato
The vasohibin (VASH) family consists of two genes, VASH1 and VASH2. VASH1 is mainly expressed in vascular endothelial cells and suppresses angiogenesis in an autocrine manner, whereas VASH2 is mainly expressed in cancer cells and exhibits pro-angiogenic activity. Employing adenomatous polyposis coli gene mutant mice, we recently reported on the role of Vash2 in the spontaneous formation of intestinal tumors. In this study, we used K19-Wnt1/C2mE (Gan) mice and examined the role of Vash2 in spontaneous gastric cancer formation...
September 27, 2017: Cancer Science
https://www.readbyqxmd.com/read/28959031/coup-tfii-is-required-for-morphogenesis-of-the-neural-crest-derived-tympanic-ring
#20
Wen-Hsin Hsu, Chun-Ming Chen, Li-Ru You
Chicken Ovalbumin Upstream Promoter-Transcription Factor II (COUP-TFII) plays pivotal roles in cell growth, cell differentiation, and cell fate determination. Although genome-wide studies have identified COUP-TFII binding on gene sets mainly involved in neural crest cell (NCC) development and craniofacial morphogenesis, the direct functional connection between COUP-TFII and NCCs in vivo has not been well characterized. In this study, we show that COUP-TFII is expressed in the subpopulation of NCCs and its derivatives, and targeted ablation of COUP-TFII in mouse NCCs results in markedly shortened and bifurcated tympanic rings, which in turn disturb the caudal direction of external acoustic meatus invagination...
September 28, 2017: Scientific Reports
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