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Wnt pathway

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https://www.readbyqxmd.com/read/28239820/long-non-coding-rna-neat1-acts-as-oncogene-in-nsclc-by-regulating-the-wnt-signaling-pathway
#1
S-J Sun, Q Lin, J-X Ma, W-W Shi, B Yang, F Li
OBJECTIVE: The present study aimed to explore the role of long non-coding RNA NEAT1 (NEAT1) in mediating non-small cell lung cancer (NSCLC) cell migration and invasion, as well as the underlying regulatory mechanisms. PATIENTS AND METHODS: The NEAT1 expression in NSCLC tissues and cell lines was measured using reverse transcription‑quantitative polymerase chain reaction (RT-qPCR). The relationships between NEAT1 expression and clinicopathological parameters were examined by chi-square test...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28239651/profiling-of-circulating-micrornas-in-children-with-recent-onset-of-type-1-diabetes
#2
Suheda Erener, Ashish Marwaha, Rusung Tan, Constadina Panagiotopoulos, Timothy J Kieffer
Type 1 diabetes (T1D) is an autoimmune disease that is clinically silent until the majority of β cells are destroyed. There is an unmet need for reliable and cost-effective biomarkers to predict and diagnose diabetes at an early stage. A number of stable microRNAs (miRNAs) have been reported in serum and plasma and are now being investigated as biomarkers of different diseases. We measured the levels of 745 miRNAs in sera of children with recent-onset T1D and age-matched controls using locked nucleic acid-enhanced (LNA-enhanced) quantitative PCR profiling...
February 23, 2017: JCI Insight
https://www.readbyqxmd.com/read/28238906/fibulin-4-reduces-extracellular-matrix-production-and-suppresses-chondrocyte-differentiation-via-dkk1-mediated-canonical-wnt-%C3%AE-catenin-signaling
#3
Lei Shangguan, Guangzhi Ning, Zhuojing Luo, Yue Zhou
Fibulin-4 is an extracellular matrix (ECM) protein implicated in connective tissue development and elastic fiber formation. However, little is known about the underlying function of Fibulin-4 in cartilage development. The aim of this study was to investigate the role and probable mechanism of Fibulin-4 stimulation in ECM production and chondrocyte differentiation. Fibulin-4 has been observed to be abnormally elevated and matrix metalloproteinases 13 (MMP13) level was highly expressed in human osteoarthritis (OA) chondrocytes...
February 23, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28237811/the-capz-interacting-protein-rcsd1-is-required-for-cardiogenesis-downstream-of-wnt11a-in-xenopus-laevis
#4
Annemarie Hempel, Susanne J Kühl, Melanie Rothe, Purushothama Rao Tata, Ioan Ovidiu Sirbu, Seppo Vainio, Michael Kühl
Wnt proteins are critical for embryonic cardiogenesis and cardiomyogenesis by regulating different intracellular signalling pathways. Whereas canonical Wnt/β-catenin signalling is required for mesoderm induction and proliferation of cardiac progenitor cells, β-catenin independent, non-canonical Wnt signalling regulates cardiac specification and terminal differentiation. Although the diverse cardiac malformations associated with the loss of non-canonical Wnt11 in mice such as outflow tract (OFT) defects, reduced ventricular trabeculation, myofibrillar disorganization and reduced cardiac marker gene expression are well described, the underlying molecular mechanisms are still not completely understood...
February 22, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28236970/ck1-in-developmental-signaling-hedgehog-and-wnt
#5
Jin Jiang
The casein kinase 1 (CK1) family of serine (Ser)/threonine (Thr) protein kinases participates in a myriad of cellular processes including developmental signaling. Hedgehog (Hh) and Wnt pathways are two major and evolutionarily conserved signaling pathways that control embryonic development and adult tissue homeostasis. Deregulation of these pathways leads to many human disorders including birth defects and cancer. Here, I review the role of CK1 in the regulation of Hh and Wnt signal transduction cascades from the membrane reception systems to the transcriptional effectors...
2017: Current Topics in Developmental Biology
https://www.readbyqxmd.com/read/28235973/endothelin-signaling-regulates-mineralization-and-posttranscriptionally-regulates-sost-in-tmob-cells-via-mir-126-3p
#6
Michael G Johnson, Kathryn Konicke, Jasmin Kristianto, Anne Gustavson, Rachel Garbo, Xiaohu Wang, Baozhi Yuan, Robert D Blank
Previously, our laboratory identified ECE-1, encoding endothelin-converting enzyme-1 (ECE-1), as a positional candidate for a pleiotropic quantitative trait locus affecting femoral size, shape, and biomechanical performance. We hypothesized that endothelin-1 (ET-1) signaling promotes osteogenesis. Exposure of immortalized mouse osteoblast (TMOb) cells to big ET-1 increased mineralization. Following big ET-1 treatment, we measured the secretion of insulin-like-growth factor-1 (IGF1), dickkopf-homolog-1 protein 1 (DKK1), and sclerostin (SOST)...
February 2017: Physiological Reports
https://www.readbyqxmd.com/read/28231299/exploration-of-inhibitory-mechanisms-of-curcumin-in-lung-cancer-metastasis-using-a-mirna-transcription-factor-target-gene-network
#7
De-Min Jiao, Li Yan, Li-Shan Wang, Hui-Zhen Hu, Xia-Li Tang, Jun Chen, Jian Wang, You Li, Qing-Yong Chen
The present study was aimed to unravel the inhibitory mechanisms of curcumin for lung cancer metastasis via constructing a miRNA-transcription factor (TF)-target gene network. Differentially expressed miRNAs between human high-metastatic non-small cell lung cancer 95D cells treated with and without curcumin were identified using a TaqMan human miRNA array followed by real-time PCR, out of which, the top 6 miRNAs (miR-302b-3p, miR-335-5p, miR-338-3p, miR-34c-5p, miR-29c-3p and miR-34a-35p) with more verified target genes and TFs than other miRNAs as confirmed by a literature review were selected for further analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28231245/signalling-crosstalk-at-the-leading-edge-controls-tissue-closure-dynamics-in-the-drosophila-embryo
#8
Raphaël Rousset, Fabrice Carballès, Nadège Parassol, Sébastien Schaub, Delphine Cérézo, Stéphane Noselli
Tissue morphogenesis relies on proper differentiation of morphogenetic domains, adopting specific cell behaviours. Yet, how signalling pathways interact to determine and coordinate these domains remains poorly understood. Dorsal closure (DC) of the Drosophila embryo represents a powerful model to study epithelial cell sheet sealing. In this process, JNK (JUN N-terminal Kinase) signalling controls leading edge (LE) differentiation generating local forces and cell shape changes essential for DC. The LE represents a key morphogenetic domain in which, in addition to JNK, a number of signalling pathways converges and interacts (anterior/posterior -AP- determination; segmentation genes, such as Wnt/Wingless; TGFβ/Decapentaplegic)...
February 23, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28230988/design-and-synthesis-of-novel-cyclic-amine-benzimidazoles-for-the-treatment-of-pancreatic-cancer
#9
Vibha Pathak, Corinne Elizabeth Augelli-Szafran, Han-Xun Wei, Yonghe Li, Patsy G Oliver, Wenyan Lu, Donald J Buchsbaum, Mark J Suto
Wnt/beta-Catenin signaling pathway has a very important role in pancreatic ductal adenocarcinoma (PDAC) initiation and progression. This signaling pathway has been implicated in angiogenesis, maintenance of resistant CICs (cancer-initiating cells), metastasis, regulation of cell cycle, apoptosis and chemoresistance. We investigated the activity of a chemical series of phenyl benzimidazoles, small molecule inhibitors of Wnt signaling in LRP6-expressing HEK 293 cells against PDAC cells. Several benzimidazoles were designed, synthesized and screened under adherent and CIC conditions...
February 23, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28230774/inhibition-of-ccar1-a-coactivator-of-%C3%AE-catenin-suppresses-the-proliferation-and-migration-of-gastric-cancer-cells
#10
Te-Sheng Chang, Kuo-Liang Wei, Chung-Kuang Lu, Yi-Hsing Chen, Ying-Tung Cheng, Shui-Yi Tung, Cheng-Shyong Wu, Ming-Ko Chiang
The aberrant activation of Wnt signaling has been implicated in a variety of human cancers, including gastric cancer. Given the current hypothesis that cancer arises from cancer stem cells (CSCs), targeting the critical signaling pathways that support CSC self-renewal appears to be a useful approach for cancer therapy. Cell cycle and apoptosis regulator 1 (CCAR1) is a transcriptional coactivator which has been shown to be a component of Wnt/β-catenin signaling, and which plays an important role in transcriptional regulation by β-catenin...
February 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28230291/therapeutic-potentials-of-bdnf-trkb-in-breast-cancer-current-status-and-perspectives
#11
Amir Tajbakhsh, Amin Mokhtari-Zaer, Mehdi Rezaee, Fahimeh Afzaljavan, Mehdi Rivandi, Seyed Mahdi Hassanian, Gordon A Ferns, Alireza Pasdar, Amir Avan
Brain-derived neurotrophic factor (BDNF) is a potent neurotrophic factor that has been shown to stimulate breast cancer cell growth and metastasis via tyrosine kinase receptors TrkA, TrkB and the p75(NTR) death receptor. The aberrant activation of BDNF/TrkB pathways can modulate several signaling pathways, including Akt/PI3K, Jak/STAT, NF-kB, UPAR/UPA, Wnt/β-catenin and VEGF pathways as well as the ER receptor. Several microRNAs have been identified that are involved in the modulation of BDNF/TrkB pathways...
February 23, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28223537/reduced-e-cadherin-facilitates-renal-cell-carcinoma-progression-by-wnt-%C3%AE-catenin-signaling-activation
#12
Xinqi Zhang, Mingxi Yang, Hua Shi, Jianxin Hu, Yuanlin Wang, Zhaolin Sun, Shuxiong Xu
Reduced expression of E-cadherin was observed in renal cell carcinoma (RCC). However, its potential clinical value and correlation with WNT/β-catenin signaling in RCC progression was still unclear. Immunohistochemical staining was performed in RCC tissue microarray to examine the expression status and prognosis value of E-cadherin and β-catenin. The potential role of E-cadherin in β-catenin translocation was analyzed with immunobloting assays. A significant negative correlation was observed between E-cadherin and β-catenin expression in RCC tissues...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28223363/auto-inhibition-of-dishevelled-regulated-by-its-extreme-c-terminus-plays-a-distinct-role-in-wnt-beta-catenin-and-wnt-pcp-signaling-pathways
#13
Jing Qi, Ho-Jin Lee, Audrey Saquet, Xiao-Ning Cheng, Ming Shao, Jie J Zheng, De-Li Shi
Dishevelled (Dvl) is a key intracellular signaling molecule that mediates the activation of divergent Wnt pathways. It contains three highly conserved domains known as DIX, PDZ and DEP, whose functions in beta-catenin-dependent canonical Wnt and beta-catenin-independent non-canonical Wnt signaling have been well characterized. The C-terminal region is also highly conserved from invertebrates to vertebrates. However, its function in regulating the activation of different Wnt signals remains unclear. We previously reported that Dvl conformational change triggered by the highly conserved PDZ-binding C-terminus is important for the pathway specificity...
February 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28222387/baicalein-enhances-the-osteogenic-differentiation-of-human-periodontal-ligament-cells-by-activating-the-wnt-%C3%AE-catenin-signaling-pathway
#14
Li-Jiao Chen, Bi-Bo Hu, Xin-Lian Shi, Man-Man Ren, Wen-Bin Yu, Sheng-Dan Cen, Rong-Dang Hu, Hui Deng
OBJECTIVE: Periodontium regeneration is one of the most important processes for periodontitis therapy. Human periodontal ligament cells (hPDLCs) play a vital role in the repair and regeneration of periodontal tissues. Our study aimed to investigated the mechanisms underlying the promotion of hPLDCs osteogenic differentiation by baicalein. DESIGN: hPDLCs were obtained from periodontal ligament (PDL) tissues by primary culture. The MTT assay was used to determine the growth curves of hPDLCs treated with different concentrations of baicalein (1...
February 7, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28222310/circulating-mirna-associated-with-posttraumatic-stress-disorder-in-a-cohort-of-military-combat-veterans
#15
Christiana G Martin, Hyungsuk Kim, Sijung Yun, Whitney Livingston, Joseph Fetta, Vincent Mysliwiec, Tristin Baxter, Jessica M Gill
Posttraumatic stress disorder (PTSD) affects many returning combat veterans, but underlying biological mechanisms remain unclear. In order to compare circulating micro RNA (miRNA) of combat veterans with and without PTSD, peripheral blood from 24 subjects was collected following deployment, and isolated miRNA was sequenced. PTSD was associated with 8 differentially expressed miRNA. Pathway analysis shows that PTSD is related to the axon guidance and Wnt signaling pathways, which work together to support neuronal development through regulation of growth cones...
January 31, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28220803/tcf7-is-suppressed-by-the-androgen-receptor-via-microrna-1-mediated-downregulation-and-is-involved-in-the-development-of-resistance-to-androgen-deprivation-in-prostate-cancer
#16
M K Siu, W-Y Chen, H-Y Tsai, H-Y Chen, J J Yin, C-L Chen, Y-C Tsai, Y-N Liu
BACKGROUND: Resistance to androgen deprivation therapy (ADT) represents a key step in the malignant progression of prostate cancer, and mutation to androgen receptor (AR) is one major driver to an androgen-independent phenotype. However, alternative oncogenic pathways that bypass AR signaling have emerged as an important mechanism promoting resistance to ADT. It is known that AR activation can prevent the interaction between β-catenin and T cell factor/lymphoid enhancer-binding factor (TCF/LEF) family, inhibiting the Wnt signaling pathway...
February 21, 2017: Prostate Cancer and Prostatic Diseases
https://www.readbyqxmd.com/read/28220308/aberrant-expression-of-cdk8-regulates-the-malignant-phenotype-and-associated-with-poor-prognosis-in-human-laryngeal-squamous-cell-carcinoma
#17
MingHua Li, XiaoDan Zhao, Ying Liu, Jun An, Hui Xiao, Chao Wang
CDK8, a member of the transcriptional subtype of the cyclin-dependent kinases (CDKs) family, shows remarkable cancer tissue specific expression profile and rather more selective contribution to the regulation of gene expression levels involved in some signaling pathways. However, the effect of CDK8 on the malignant phenotype of human laryngeal squamous cell carcinoma (LSCC) cells and the potential molecular mechanisms remain unclear. In the present study, we evaluated the expression levels of CDK8 by quantitative real-time reverse-transcriptase polymerase chain reaction (qRT-PCR) and immunohistochemistry in tissue samples of 60 LSCC patients...
February 20, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28220106/synchronization-by-daytime-restricted-food-access-modulates-the-presence-and-subcellular-distribution-of-%C3%AE-catenin-and-its-phosphorylated-forms-in-the-rat-liver
#18
Dalia Luz De Ita-Pérez, Mauricio Díaz-Muñoz
β-catenin, the principal effector of the Wnt pathway, is also one of the cadherin cell adhesion molecules; therefore, it fulfills signaling and structural roles in most of the tissues and organs. It has been reported that β-catenin in the liver regulates metabolic responses such as gluconeogenesis and histological changes in response to obesity-promoting diets. The function and cellular location of β-catenin is finely modulated by coordinated sequences of phosphorylation-dephosphorylation events. In this article, we evaluated the levels and cellular localization of liver β-catenin variants, more specifically β-catenin phosphorylated in serine 33 (this phosphorylation provides recognizing sites for β-TrCP, which results in ubiquitination and posterior proteasomal degradation of β-catenin) and β-catenin phosphorylated in serine 675 (phosphorylation that enhances signaling and transcriptional activity of β-catenin through recruitment of different transcriptional coactivators)...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28219919/dickkopf-3-ablation-attenuates-the-development-of-atherosclerosis-in-apoe-deficient-mice
#19
Wen-Lin Cheng, Yang Yang, Xiao-Jing Zhang, Junhong Guo, Jun Gong, Fu-Han Gong, Zhi-Gang She, Zan Huang, Hao Xia, Hongliang Li
BACKGROUND: Dickkopf-3 (DKK3) is a negative regulator of the Wnt/β-catenin signaling pathway, which is involved in inflammation. However, little is known about the relationship between DKK3 expression and the progression of atherosclerosis. The aim of the present study was to define the role of DKK3 and its potential mechanism in the development of atherosclerosis. METHODS AND RESULTS: Immunofluorescence analysis showed that DKK3 was strongly expressed in macrophages of atherosclerotic plaques from patients with coronary heart disease and in hyperlipidemic mice...
February 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28219651/ho1-and-wnt-expression-is-independently-regulated-in-female-mice-brains-following-permanent-ischemic-brain-injury
#20
Jatin Tulsulkar, Alicia Ward, Zahoor Shah
A gender difference in stroke is observed throughout epidemiologic studies, pathophysiology, treatment and outcomes. We investigated the neuroprotective role of hemeoxygenase (HO) enzyme, which catabolizes free heme to bilirubin, carbon monoxide and biliverdin in the female brain after permanent ischemia. We have previously reported in male mice that genetic deletion of HO1 exacerbates the brain damage after permanent ischemia, and the mechanism of neuroprotection is dependent on the HO1/Wnt pathway; however, the role of HO1/Wnt mediated neuroprotection in the female brain is yet to be investigated...
February 17, 2017: Brain Research
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