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Wnt/b-catenin signal

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https://www.readbyqxmd.com/read/28299632/transgenic-expression-of-a-canonical-wnt-inhibitor-kallistatin-is-associated-with-decreased-circulating-cd19-b-lymphocytes-in-the-peripheral-blood
#1
Jeffrey D McBride, Xiaochen Liu, William L Berry, Ralf Janknecht, Rui Cheng, Kelu Zhou, Evangelos V Badiavas, Jian-Xing Ma
Members of the family of serine proteinase inhibitors, such as kallistatin, have been shown to inhibit canonical Wnt-TCF/LEF-β-catenin signaling via their interactions with the Wnt co-receptor LRP6. Yet the effects of transgenic overexpression of anti-Wnt serpins on hematopoiesis and lymphopoiesis are not well known. We studied the effects of human kallistatin (SERPINA4) on Wnt reporter activity in various cell types throughout the hematopoietic system and associated impacts on circulating white blood cell profiles...
March 15, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28283910/hyperglycemia-impedes-definitive-endoderm-differentiation-of-human-embryonic-stem-cells-by-modulating-histone-methylation-patterns
#2
A C H Chen, Y L Lee, S W Fong, C C Y Wong, E H Y Ng, W S B Yeung
Exposure to maternal diabetes during fetal growth is a risk factor for the development of type II diabetes (T2D) in later life. Discovery of the mechanisms involved in this association should provide valuable background for therapeutic treatments. Early embryogenesis involves epigenetic changes including histone modifications. The bivalent histone methylation marks H3K4me3 and H3K27me3 are important for regulating key developmental genes during early fetal pancreas specification. We hypothesized that maternal hyperglycemia disrupted early pancreas development through changes in histone bivalency...
March 10, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28275053/inhibiting-clathrin-mediated-endocytosis-of-the-leucine-rich-g-protein-coupled-receptor-5-diminishes-cell-fitness
#3
Joshua C Snyder, Lauren K Rochelle, Caroline Ray, Thomas F Pack, Cheryl B Bock, Veronica Lubkov, H Kim Lyerly, Alan S Waggoner, Larry S Barak, Marc G Caron
The leucine-rich G protein-coupled receptor-5 (LGR5) is expressed in adult tissue stem cells of many epithelia and its overexpression is negatively correlated with cancer prognosis. LGR5 potentiates WNT/β-catenin signaling through its unique constitutive internalization property that clears negative regulators of the WNT-receptor complex from the membrane. However, both the mechanism and physiological relevance of LGR5 internalization is unclear. Therefore, a natural product library was screened to discover LGR5 internalization inhibitors and gain mechanistic insight into LGR5 internalization...
March 8, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28244648/salvianolic-acid-b-regulates-gene-expression-and-promotes-cell-viability-in-chondrocytes
#4
Xiaohong Yang, Shaojie Liu, Siming Li, Pengzhen Wang, Weicong Zhu, Peihong Liang, Jianrong Tan, Shuliang Cui
Articular chondrocytes reside in lacunae distributed in cartilage responsible for the remodelling of the tissue with limited ability of damage repairing. The in vitro expanded chondrocytes enhanced by factors/agents to obtain large numbers of cells with strengthened phenotype are essential for successful repair of cartilage lesions by clinical cell implantation therapies. Because the salvianolic acid B (Sal B), a major hydrophilic therapeutic agent isolated from Salvia miltiorrhiza, has been widely used to treat diseases and able to stimulate activity of cells, this study examines the effects of Sal B on passaged chondrocytes...
February 28, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28239825/upregulated-serum-sclerostin-level-in-the-t2dm-patients-with-femur-fracture-inhibits-the-expression-of-bone-formation-remodeling-associated-biomarkers-via-antagonizing-wnt-signaling
#5
Y Wu, S-Y Xu, S-Y Liu, L Xu, S-Y Deng, Y-B He, S-C Xian, Y-H Liu, G-X Ni
OBJECTIVE: Bone formation/remodeling-associated biomarkers, such as osteocalcin, amino pro-peptide of type 1 collagen (P1NP) and CrossLaps (CTX) have been deregulated in type 2 diabetes mellitus (T2DM) patients. In particular, the T2DM-associated sclerostin markedly inhibits the bone formation, suppresses the osteoblast activity and downregulates the bone turnover. PATIENTS AND METHODS: In the present study, we examined the serum levels of sclerostin, osteocalcin, P1NP and CTX in the T2DM patients...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28239820/long-non-coding-rna-neat1-acts-as-oncogene-in-nsclc-by-regulating-the-wnt-signaling-pathway
#6
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/28218482/osteoblastic-differentiation-of-periodontal-ligament-stem-cells-on-non-stoichiometric-calcium-phosphate-and-titanium-surfaces
#7
L Winning, L Robinson, A R Boyd, I A El Karim, F T Lundy, B J Meenan
Bioactive materials offer particular clinical benefits in the field of dental implantology, where differentiation of stem cells towards an osteoblastic lineage is required for osseointegration and appropriate function of implants in vivo. The aim of this study was to evaluate the osteoblastic response of Stro-1+ve periodontal ligament stem cells (PDLSCs) to three well-characterised biomaterial surfaces: an abraded titanium surface (cpTi) control; a polycrystalline titanium surface, with both micro and nano-topography produced by radio frequency magnetron sputtering (TiTi); and the same surface incorporating a sputter deposited calcium phosphate coating (CaP-TiTi)...
February 20, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28188683/functional-kras-mutations-and-a-potential-role-for-pi3k-akt-activation-in-wilms-tumors
#8
Dina Polosukhina, Harold D Love, Hernan Correa, Zengliu Su, Kimberly B Dahlman, William Pao, Harold L Moses, Carlos L Arteaga, Harold N Lovvorn, Roy Zent, Peter E Clark
Wilms tumor (WT) is the most common renal neoplasm of childhood and affects 1 in 10,000 children aged less than 15 years. These embryonal tumors are thought to arise from primitive nephrogenic rests that derive from the metanephric mesenchyme during kidney development and are characterized partly by increased Wnt/β-catenin signaling. We previously showed that coordinate activation of Ras and β-catenin accelerates the growth and metastatic progression of a murine WT model. Here, we show that activating KRAS mutations can be found in human WT...
February 11, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28163317/embelin-attenuates-adipogenesis-and-lipogenesis-through-activating-canonical-wnt-signaling-and-inhibits-high-fat-diet-induced-obesity
#9
Y Gao, J Li, X Xu, S Wang, Y Yang, J Zhou, L Zhang, F Zheng, X Li, B Wang
BACKGROUND: Recent studies suggest that Embelin, a natural plant extract might have the potential to prevent body weight gain in rats. However, the mechanisms involved remain to be elucidated. METHODS: Effects of Embelin on adipocyte differentiation and lipogenesis were studied in murine ST2 stromal cells and C3H10T1/2 mesenchymal cells. The mechanisms through which Embelin regulates adipogenic differentiation and lipogenesis were explored. The in vivo anti-obesity effects of Embelin in high-fat diet (HFD)-induced obesity mice and possible transcriptional impact were investigated...
February 6, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28151034/sfrp3-and-dkk1-regulate-fibroblast-like-synoviocytes-markers-and-wnt-elements-expression-depending-on-cellular-context
#10
Dorra Elhaj Mahmoud, Nadia Sassi, Ghassen Drissi, Maher Barsaoui, Khaled Zitouna, Hela Sahli, Maryam Kallel-Sellami, Lassad Kanoun, Elhem Cheour, Lilia Laadhar
CONTEXT: Fibroblast-like synoviocytes (FLS) from rheumatoid arthritis (RA) display pathogenic behavior. Various members of the Wnt pathway, especially the canonical Wnt/β-catenin cascade, may contribute to autonomous RA FLS activation. It has been shown that the two Wnt inhibitors: sFRP3 and DKK1 contribute to several critical aspects of joint biology. However, their effects on RA FLS are poorly characterized. The aim of our study was to investigate the effects of sFRP3 and DKK1 on FLS markers, Wnt components, and target oncogenes expression by RA FLS and compare the findings to osteoarthritic (OA) FLS...
February 2, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28137846/endothelial-wnt-%C3%AE-catenin-signaling-reduces-immune-cell-infiltration-in-multiple-sclerosis
#11
Justin E Lengfeld, Sarah E Lutz, Julian R Smith, Claudiu Diaconu, Cameron Scott, Sigal B Kofman, Claire Choi, Craig M Walsh, Cedric S Raine, Ilir Agalliu, Dritan Agalliu
Disruption of the blood-brain barrier (BBB) is a defining and early feature of multiple sclerosis (MS) that directly damages the central nervous system (CNS), promotes immune cell infiltration, and influences clinical outcomes. There is an urgent need for new therapies to protect and restore BBB function, either by strengthening endothelial tight junctions or suppressing endothelial vesicular transcytosis. Although wingless integrated MMTV (Wnt)/β-catenin signaling plays an essential role in BBB formation and maintenance in healthy CNS, its role in BBB repair in neurologic diseases such as MS remains unclear...
February 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28126478/gene-signature-associated-with-upregulation-of-the-wnt-%C3%AE-catenin-signaling-pathway-predicts-tumor-response-to-transarterial-embolization
#12
Etay Ziv, Hooman Yarmohammadi, F Edward Boas, Elena Nadia Petre, Karen T Brown, Stephen B Solomon, David Solit, Diane Reidy, Joseph P Erinjeri
PURPOSE: To identify gene mutations in tumors undergoing transarterial embolization and explore the relationship between gene mutations and tumor response to embolization. MATERIALS AND METHODS: This was a retrospective review that included 17 patients with primary or metastatic liver tumors treated with embolization and had specimens analyzed for a 341-gene panel next-generation sequence assay. Pathologic conditions included hepatocellular, carcinoid, pancreatic neuroendocrine, melanoma, medullary thyroid, and liver acinar-cell carcinoma...
March 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28122918/nuclear-factor-i-c-reciprocally-regulates-adipocyte-and-osteoblast-differentiation-via-control-of-canonical-wnt-signaling
#13
Jie Zhou, Shan Wang, Qi Qi, Xiaoyue Yang, Endong Zhu, Hairui Yuan, Xuemei Li, Ying Liu, Xiaoxia Li, Baoli Wang
Nuclear factor I-C (NFIC) has recently been identified as an important player in osteogenesis and bone homeostasis in vivo However, the molecular mechanisms involved have yet to be defined. In the current study, Nfic expression was altered in primary marrow stromal cells and established progenitor lines after adipogenic and osteogenic treatment. Overexpression of Nfic in stromal cells ST2, mesenchymal cells C3H10T1/2, and primary marrow stromal cells inhibited adipogenic differentiation, whereas it promoted osteogenic differentiation...
January 25, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28105934/charm-discovery-of-combinatorial-chromatin-modification-patterns-in-hepatitis-b-virus-x-transformed-mouse-liver-cancer-using-association-rule-mining
#14
Sung Hee Park, Sun-Min Lee, Young-Joon Kim, Sangsoo Kim
BACKGROUND: Various chromatin modifications, identified in large-scale epigenomic analyses, are associated with distinct phenotypes of different cells and disease phases. To improve our understanding of these variations, many computational methods have been developed to discover novel sites and cell-specific chromatin modifications. Despite the availability of existing methods, there is still room for further improvement when they are applied to resolve the histone code hypothesis. Hence, we aim to investigate the development of a computational method to provide new insights into de novo combinatorial pattern discovery of chromatin modifications to characterize epigenetic variations in distinct phenotypes of different cells...
December 13, 2016: BMC Bioinformatics
https://www.readbyqxmd.com/read/28105169/role-of-wnt-%C3%AE-catenin-pathway-in-inducing-autophagy-and-apoptosis-in-multiple-myeloma-cells
#15
Nan Su, Pingping Wang, Yan Li
β-catenin is the downstream effector of the Wnt signaling pathway, which regulates cell proliferation and differentiation. Activation of the Wnt/β-catenin signaling pathway has been shown to positively correlate with prognosis in several types of malignancies. The present study aimed to determine the role of β-catenin in multiple myeloma (MM) cells using lentiviruses expressing small interfering RNA (siRNA). The expression of β-catenin in the MM cell line RPMI-8826 was evaluated following β-catenin knockdown by the siRNA...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105085/effects-of-shen-an-granules-on-wnt-signaling-pathway-in-mouse-models-of-diabetic-nephropathy
#16
Xin-Rong Zou, Xiao-Qin Wang, Ying-Lin Hu, Hui-Lan Zhou
The effect of Shen'an granules on the Wnt signaling pathway in renal tissues of mouse models of streptozotocin (STZ)-induced diabetic nephropathy was investigated in the present study. A total of 62 BALB/c mice were randomly divided into the normal control (A group), model (B group), losartan (C group), low-dose Shen'an granules (D group), and high-dose Shen'an granules (E group) groups. The mouse model of diabetic nephropathy was established by a single intraperitoneal injection of STZ (150 mg/kg). The animals were treated with drugs for 8 weeks, and blood creatinine, blood urea nitrogen, triglycerides (TG), and total cholesterol (CHOL) were measured prior to and after treatment...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28103279/aristaless-related-homeobox-arx-interacts-with-%C3%AE-catenin-bcl9-and-p300-to-regulate-canonical-wnt-signaling
#17
Il-Taeg Cho, Youngshin Lim, Jeffrey A Golden, Ginam Cho
Mutations in the Aristaless Related Homeobox (ARX) gene are associated with a spectrum of structural (lissencephaly) and functional (epilepsy and intellectual disabilities) neurodevelopmental disorders. How mutations in this single transcription factor can result in such a broad range of phenotypes remains poorly understood. We hypothesized that ARX functions through distinct interactions with specific transcription factors/cofactors to regulate unique target genes in different cell types. To identify ARX interacting proteins, we performed an unbiased proteomics screen and identified several components of the Wnt/β-catenin signaling pathway, including β-catenin (CTNNB1), B-cell CLL/lymphoma 9 (BCL9) and leucine rich repeat flightless interacting protein 2 (LRRFIP2), in cortical progenitor cells...
2017: PloS One
https://www.readbyqxmd.com/read/28102846/hepatitis-b-virus-x-protein-promotes-the-stem-like-properties-of-ov6-cancer-cells-in-hepatocellular-carcinoma
#18
Chao Wang, Ming-da Wang, Peng Cheng, Hai Huang, Wei Dong, Wei-Wei Zhang, Peng-Peng Li, Chuan Lin, Ze-Ya Pan, Meng-Chao Wu, Wei-Ping Zhou
Hepatitis B virus X protein (HBx) and cancer stem-like cells (CSCs) have both been implicated in the occurrence and development of HBV-related hepatocellular carcinoma (HCC). However, whether HBx contributes to the stem-like properties of OV6(+) CSCs in HCC remains elusive. In this study, we showed that the concomitant expression of HBx and OV6 was closely associated with the clinical outcomes and prognosis of patients with HBV-related HCC. HBx was required for the stem-like properties of OV6(+) liver CSCs, including self-renewal, stem cell-associated gene expression, tumorigenicity and chemoresistance...
January 19, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28092744/quercetin-induces-apoptosis-and-autophagy-in-primary-effusion-lymphoma-cells-by-inhibiting-pi3k-akt-mtor-and-stat3-signaling-pathways
#19
Marisa Granato, Celeste Rizzello, Maria Saveria Gilardini Montani, Laura Cuomo, Marina Vitillo, Roberta Santarelli, Roberta Gonnella, Gabriella D'Orazi, Alberto Faggioni, Mara Cirone
Quercetin, a bioflavonoid contained in several vegetables daily consumed, has been studied for long time for its antiinflammatory and anticancer properties. Quercetin interacts with multiple cancer-related pathways such as PI3K/AKT, Wnt/β-catenin and STAT3. These pathways are hyperactivated in primary effusion lymphoma (PEL), an aggressive B cell lymphoma whose pathogenesis is strictly linked to the oncogenic virus Kaposis' Sarcoma-associated Herpesvirus (KSHV). In this study, we found that quercetin inhibited PI3K/AKT/mTOR and STAT3 pathways in PEL cells, and as a consequence, it down-regulated the expression of the prosurvival cellular proteins such as c-FLIP, cyclin D1 and cMyc...
January 5, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28092101/the-cross-regulation-between-sox15-and-wnt-signaling-pathway
#20
REVIEW
Ali Moradi, Faezeh Ghasemi, Kazem Anvari, Seyed Mahdi Hassanian, Saeideh Ahmadi Simab, Safieh Ebrahimi, Amirreza Hesari, Mohammad Mahdi Forghanifard, Mohammad Taher Boroushaki, Soodabeh ShahidSales, Amir Avan
WNT/B-CATENIN signaling pathway is one of the key dysregulated pathways in different tumor types, which regulate the expression of several genes involved in cell proliferation, differentiation, and survival. This pathway is being modulated by sex-determining region Y-box (SOX) family genes. The functions of these genes are suggested as tumor suppressor or oncogene. SOX genes transcribe a group of transcription factors that play important roles in embryonic development and carcinogenesis. Among them, SOX15 is recently been identified as a novel tumor suppressor in pancreatic and esophagus cancers with a potential role in modulating Wnt/b-catenin signaling...
January 16, 2017: Journal of Cellular Physiology
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