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https://www.readbyqxmd.com/read/29777010/developmental-vascular-regression-is-regulated-by-a-wnt-%C3%AE-catenin-myc-p21-cdkn1a-pathway-that-controls-cell-proliferation-and-cell-death
#1
Gowri Nayak, Yoshinobu Odaka, Vikram Prasad, Alyssa F Solano, Eun-Jin Yeo, Shruti Vemaraju, Jeffery D Molkentin, Andreas Trumpp, Bart Williams, Sujata Rao, Richard A Lang
Normal development requires tight regulation of cell proliferation and cell death. Here, we investigated these control mechanisms in the hyaloid vessels, a temporary vascular network in the mammalian eye that requires a Wnt/β-catenin response for scheduled regression. We investigated whether the hyaloid Wnt response was linked to the oncogene Myc , and the cyclin-dependent kinase inhibitor P21 (CDKN1A), both established regulators of cell cycle progression and cell death. Our analysis showed that the Wnt pathway coreceptors LRP5 and LRP6 have overlapping activities mediating the Wnt/β-catenin signaling in hyaloid vascular endothelial cells (VECs)...
May 18, 2018: Development
https://www.readbyqxmd.com/read/29775701/lithium-posttreatment-alleviates-blood-brain-barrier-injury-after-intracerebral-hemorrhage-in-rats
#2
Weishan Li, Rui Li, Sha Zhao, Cheng Jiang, Zhen Liu, Xiaobo Tang
Vasogenic cerebral edema formation after blood brain barrier (BBB) damage aggravates the devastating consequences of intracerebral hemorrhage (ICH). The present study aims to probe into a therapeutic method on BBB preservation after ICH with a glycogen synthase kinase-3β (GSK-3β) inhibitor, lithium. Intrastriatal infusion of semicoagulated autologous whole blood or sham surgery was performed on male Sprague-Dawley (SD) rats (n = 208).Experimental animals received administration of 4,6-disubstitutedpyrrolo-pyrimidine (TWS119), lithium alone or in combination with a phosphatidylinositol 3-kinase inhibitor, wortmannin, after ICH...
May 15, 2018: Neuroscience
https://www.readbyqxmd.com/read/29775417/targeting-histone-methyltransferase-enhancer-of-zeste-homolog-2-inhibits-renal-epithelial-mesenchymal-transition-and-attenuates-renal-fibrosis
#3
Xiaoxu Zhou, Chongxiang Xiong, Evelyn Tolbert, Ting C Zhao, George Bayliss, Shougang Zhuang
Enhancer of zeste homolog-2 (EZH2) is a methyltransferase that induces histone H3 lysine 27 trimethylation (H3K27me3) and functions as an oncogenic factor in many cancer types. Its role in renal epithelial-mesenchymal transition (EMT) remains unknown. In this study, we found that EZH2 and H3K27me3 were highly expressed in mouse kidney with unilateral ureteral obstruction and cultured mouse kidney proximal tubular (TKPT) cells undergoing EMT. Inhibition of EZH2 with 3-deazaneplanocin A (3-DZNeP) attenuated renal fibrosis, which was associated with preserving E-cadherin expression and inhibiting Vimentin up-regulation in the obstructed kidney...
May 18, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29775181/porous-lithium-doped-hydroxyapatite-scaffold-seeded-with-hypoxia-preconditioned-bone-marrow-mesenchymal-stem-cells-for-bone-tissue-regeneration
#4
Donghai Li, Huifang Liu, Jinhai Zhao, Zhouyuan Yang, Xiaowei Xie, Zhun Wei, Dongzhe Li, Pengde Kang
Hydroxyapatite (HA) is a commonly used biomaterial in bone-tissue engineering, but pure HA is deficient in osteoinduction. In this study, we fabricated scaffolds of lithium-doped HA (Li-HA) and assess the bone generation enhancement of Li-HA scaffolds seeded with hypoxia-preconditioned bone-marrow mesenchymal stem cells (BMMSCs). We found that 1.5%Li-HA obtained optimal cell proliferation activity in vitro. In an in vivo study, Li-HA/BMSCs enhanced new bone formation, reducing the GSK-3β and increasing the β-catenin, but the angiogenic effect was not modified significantly...
May 18, 2018: Biomedical Materials
https://www.readbyqxmd.com/read/29774401/high-levels-of-serum-sclerostin-and-dkk1-in-a-case-of-klippel-tr%C3%A3-naunay-syndrome
#5
P Muto, A Lo Gullo, G Mandraffino, S Loddo, M Atteritano
Klippel-Trénaunay syndrome (KTS) is described as a complex syndrome characterized by various combinations of capillary, venous, and lymphatic malformations associated with bone and soft tissue hypertrophy. We report a case of a 67-year-old postmenopausal Caucasian women with KTS that shows elevated levels of sclerostin and Dickkopf-related protein 1 (DKK1). Dual-energy X-ray absorptiometry (DXA) BMD T-scores at lumbar spine and femur were normal. Serum calcium and phosphorus levels were consistently normal, 25-hydroxyvitamin D (25OHD) < 30 ng/mL, and normal parathyroid hormone (PTH)...
May 17, 2018: Osteoporosis International
https://www.readbyqxmd.com/read/29772481/vascular-peroxide-1-promotes-ox-ldl-induced-programmed-necrosis-in-endothelial-cells-through-a-mechanism-involving-%C3%AE-catenin-signaling
#6
Yin-Zhuang Zhang, Lei Wang, Jie-Jie Zhang, Xiao-Ming Xiong, Di Zhang, Xuan-Meng Tang, Xiu-Ju Luo, Qi-Lin Ma, Jun Peng
BACKGROUND AND AIMS: Vascular peroxidase 1 (VPO1) plays a key role in mediation of cardiovascular oxidative injury. This study aims to determine whether VPO1 can promote programmed necrosis of endothelial cells and the underlying mechanisms. METHODS AND RESULTS: Human umbilical vein endothelial cells (HUVECs) were incubated with oxidized low-density lipoprotein (ox-LDL, 100 μg/mL) for 48 h to induce cell injury, which showed an elevation in cell necrosis (reflected by the increased propidium iodide (PI) positive-staining cells, LDH release and decreased cell viability), concomitant with an increase in programmed necrosis-relevant proteins including receptor-interacting protein kinase 1/3 (RIPK1/3), p-RIPK3 and mixed lineage kinase domain like (MLKL); these phenomena were attenuated by necrostatin-1(Nec-1) and RIPK3 siRNA...
May 3, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29772237/lsinct5-activates-wnt-%C3%AE-catenin-signaling-by-interacting-with-ncym-to-promote-bladder-cancer-progression
#7
Xiaobo Zhu, Yuqiao Li, Shikai Zhao, Shouguo Zhao
Accumulating evidence has indicated that long non-coding RNAs (lncRNAs) are critically involved in tumor progression. In current study, we reported a novel lncRNA signature correlated with bladder cancer development. Particularly, the lncRNA long stress-induced noncoding transcript 5 (LSINCT5) is significantly upregulated in human bladder cancer cell lines and tumor specimens. Meanwhile, high LSINCT5 expression correlates with poor prognosis, enhances tumor sphere formation and invasion in vitro. In vivo xenograft tumor growth is also elevated by LSINCT5 overexpression...
May 14, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29772067/dna-content-analysis-of-colorectal-serrated-lesions-detects-an-aneuploid-subset-of-inflammatory-bowel-disease-associated-serrated-epithelial-change-and-traditional-serrated-adenomas
#8
Won-Tak Choi, Kwun Wah Wen, Peter S Rabinovitch, Danning Huang, Aras N Mattis, Ryan M Gill
AIMS: Serrated lesions (SLs), including sessile serrated adenoma (SSA) and traditional serrated adenoma (TSA), are important premalignant lesions for colorectal cancer (CRC). Although a small subset of SLs are known to harbor TP53 mutations and Wnt/β-catenin pathway activation, suggesting that they may develop dysplasia or CRC via a 'chromosomal instability (CIN)-like' pathway, it is unclear if aneuploidy (characteristic of conventional adenoma) ever develops in SLs and is associated with development of dysplasia or CRC, in this context...
May 17, 2018: Histopathology
https://www.readbyqxmd.com/read/29771986/correction-the-natural-compound-jatrophone-interferes-with-wnt-%C3%AE-catenin-signaling-and-inhibits-proliferation-and-emt-in-human-triple-negative-breast-cancer
#9
Iram Fatima, Ikbale El-Ayachi, Ling Taotao, M Angeles Lillo, Raisa I Krutilina, Tiffany N Seagroves, Tomasz W Radaszkiewicz, Miroslav Hutnan, Vitezslav Bryja, Susan A Krum, Fatima Rivas, Gustavo A Miranda-Carboni
[This corrects the article DOI: 10.1371/journal.pone.0189864.].
2018: PloS One
https://www.readbyqxmd.com/read/29771446/simvastatin-induces-osteogenic-differentiation-of-mscs-via-wnt-%C3%AE-catenin-pathway-to-promote-fracture-healing
#10
M Zhang, Y-Q Bian, H-M Tao, X-F Yang, W-D Mu
OBJECTIVE: This study was designed to investigate whether Simvastatin could facilitate osteogenic differentiation of rat marrow mesenchymal stem cells (MSCs) by modulating the Wnt/β-catenin pathway, thus promoting fracture healing. MATERIALS AND METHODS: MSCs were isolated from rat bone marrow specimens and their purity was identified. The third generation of MSCs was cultured in osteoinduction medium containing simvastatin of gradient concentration, and the highest dose of simvastatin that did not cause cell proliferation was determined by the result of the CCK8 assay...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29771444/low-level-laser-irradiation-promotes-the-differentiation-of-bone-marrow-stromal-cells-into-osteoblasts-through-the-apn-wnt-%C3%AE-catenin-pathway
#11
R-F Zhang, Q Wang, A-A Zhang, J-G Xu, L-D Zhai, X-M Yang, X-T Liu
OBJECTIVE: The relationship between adiponectin (APN) pathway and Wnt pathway was explored through BMSCs, and the effect of low-level laser irradiation (LLLI) on bone marrow stromal cells (BMSCs) and its mechanism were further studied. MATERIALS AND METHODS: 3-week-old Sprague-Dawley (SD) rats were selected, and mesenchymal stem cells were separately cultured and purified. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was used to analyze cell proliferation...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29771425/fhl2-participates-in-renal-interstitial-fibrosis-by-altering-the-phenotype-of-renal-tubular-epithelial-cells-via-regulating-the-%C3%AE-catenin-pathway
#12
S-G Zhou, H-J Ma, Z-Y Guo, W Zhang, X Yang
OBJECTIVE: To investigate the potential role of FHL2 (four and a half LIM domains protein 2) in the renal interstitial fibrosis and its underlying mechanism. MATERIALS AND METHODS: NRK-52E, the rat tubular epithelial cell line, was selected for the in vitro experiments. The unilateral ureteral obstruction (UUO) mouse model and phenotype changes of NRK-52E cells were induced by TGF-β (transforming growth factor-β) treatment. Protein and mRNA expressions of biomarkers of tubular cells and renal fibrosis in NRK-52E cells were detected...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29771416/long-non-coding-rna-duxap8-regulates-proliferation-and-invasion-of-esophageal-squamous-cell-cancer
#13
L-J Xu, X-J Yu, B Wei, H-X Hui, Y Sun, J Dai, X-F Chen
OBJECTIVE: The purpose of this research was to detect the expression of long non-coding RNA DUXAP8 in esophageal cancer, and to explore its underlying mechanism in the development of esophageal squamous cell carcinoma (ESCC). PATIENTS AND METHODS: We collected 78 pairs of esophageal cancer tissues and normal adjacent tissues. The mRNA level of DUXAP8 in these esophageal cancer tissues and corresponding adjacent tissues was detected by quantitative Real-time polymerase chain reaction (qRT-PCR)...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29771406/bay-11-7082-induces-apoptosis-of-multiple-myeloma-u266-cells-through-inhibiting-nf-%C3%AE%C2%BAb-pathway
#14
Y Wang, X-L Zhang, C-M Sun
OBJECTIVE: To study the effects of BAY-11-7082 on proliferation and apoptosis of U266 cells and its mechanism of action. MATERIALS AND METHODS: Multiple myelomas U266 cells were cultured and divided into control group and gradient-concentration BAY-11-7082 groups (1 μmol/L, 2 μmol/L, 4 μmol/L and 8 μmol/L). Cells in BAY-11-7082 groups were treated with drugs in different concentrations for 4 h, while those in control group were added with an equal volume of solvent...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29771334/%C3%AE-catenin-activation-in-hair-follicle-dermal-stem-cells-induces-ectopic-hair-outgrowth-and-skin-fibrosis
#15
Yixin Tao, Qingchun Yang, Lei Wang, Jie Zhang, Xuming Zhu, Qianqian Sun, Yunbin Han, Qian Luo, Yushu Wang, Xizhi Guo, Ji Wu, Baojie Li, Xiao Yang, Lin He, Gang Ma
Hair follicle dermal sheath (DS) harbors hair follicle dermal stem cells (hfDSCs), which can be recruited to replenish DS and dermal papilla (DP). Cultured DS cells can differentiate into various cell lineages in vitro. However, it is unclear how its plasticity is modulated in vivo. Wnt/β-catenin signaling plays an important role in maintaining stem cells of various lineages and is required for HF development and regeneration. Here we report that activation of β-catenin in DS generates ectopic HF outgrowth (EF) by reprogramming HF epidermal cells and DS cells themselves, and endows DS cells with hair inducing ability...
May 16, 2018: Journal of Molecular Cell Biology
https://www.readbyqxmd.com/read/29771197/emerging-insights-into-wnt-%C3%AE-catenin-signaling-in-head-and-neck-cancer
#16
K A Alamoud, M A Kukuruzinska
Head and neck cancer presents primarily as head and neck squamous cell carcinoma (HNSCC), a debilitating malignancy fraught with high morbidity, poor survival rates, and limited treatment options. Mounting evidence indicates that the Wnt/β-catenin signaling pathway plays important roles in the pathobiology of HNSCC. Wnt/β-catenin signaling affects multiple cellular processes that endow cancer cells with the ability to maintain and expand immature stem-like phenotypes, proliferate, extend survival, and acquire aggressive characteristics by adopting mesenchymal traits...
June 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29770348/quantitative-live-cell-reporter-assay-for-noncanonical-wnt-activity
#17
Edith P Karuna, Michael W Susman, Hsin-Yi Henry Ho
Noncanonical Wnt signaling functions independently of the β-catenin pathway to control diverse developmental processes, and dysfunction of the pathway contributes to a number of human pathological conditions, including birth defects and metastatic cancer. Progress in the field, however, has been hampered by the scarcity of functional assays for measuring noncanonical Wnt signaling activity. We recently described the Wnt5a-Ror-Kif26b (WRK) reporter assay, which directly monitors a post-transcriptional regulatory event in noncanonical Wnt signaling...
March 20, 2018: Bio-protocol
https://www.readbyqxmd.com/read/29769480/5-hydroxy-4-nitro-7-propionyloxy-genistein-inhibited-invasion-and-metastasis-via-inactivating-wnt-b-catenin-signal-pathway-in-human-endometrial-carcinoma-ji-endometrial-cells
#18
Jun Bai, Xin Luo
BACKGROUND Chemotherapy has been assuring more important roles in the treatment of carcinoma. Developing new types of drugs with less adverse effects and low drug resistance has become an important researching focus. The present study aimed to investigate the anticancer effects of 5-hydroxy-4'-nitro-7-propionyloxy-genistein (HNPG) and to elucidate its underlying molecular mechanism. MATERIAL AND METHODS The inhibitory effects of cell viability of HNPG were detected using 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay, flat plate clone formation method, and Transwell assay...
May 17, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29769196/an-in-vivo-screen-identifies-pygo2-as-a-driver-for-metastatic-prostate-cancer
#19
Xin Lu, Xiaolu Pan, Chang-Jiun Wu, Di Zhao, Shan Feng, Yong Zang, Rumi Lee, Sunada Khadka, Samirkumar B Amin, Eun-Jung Jin, Xiaoying Shang, Pingna Deng, Yanting Luo, William R Morgenlander, Jacqueline Weinrich, Xuemin Lu, Shan Jiang, Qing Chang, Nora M Navone, Patricia Troncoso, Ronald A DePinho, Y Alan Wang
Advanced prostate cancer displays conspicuous chromosomal instability and rampant copy number aberrations, yet the identity of functional drivers resident in many amplicons remain elusive. Here, we implemented a functional genomics approach to identify new oncogenes involved in prostate cancer progression. Through integrated analyses of focal amplicons in large prostate cancer genomic and transcriptomic datasets as well as genes upregulated in metastasis, 276 putative oncogenes were enlisted into an in vivo gain-of-function tumorigenesis screen...
May 16, 2018: Cancer Research
https://www.readbyqxmd.com/read/29768138/knockdown-of-the-prolyl-isomerase-pin1-inhibits-hep-2-cells-growth-migration-and-invasion-by-targeting-%C3%AE-catenin-signaling-pathway
#20
Guoliang Fan, Lin Wang, Jia Xu, Ping Jiang, Wei Wang, Ying Huang, Minggang Lv, Shaoting Liu
Increasing evidence indicates that peptidylprolyl cis/trans isomerase, NIMA-interacting 1 (Pin1) plays a decisive role in a variety of cancers. Nevertheless, its function in laryngeal squamous cell carcinoma (LSCC) has not been elaborated. The aim of this study is to determine the role of Pin1 in LSCC. Here, we established stably transfected Hep-2 cells with low expression of Pin1. Intriguingly, ability of cell proliferation, migration and invasion was significantly inhibited in Pin1-silenced Hep-2 cells. Similarly, knockdown of Pin1 induced apoptosis of Hep-2 cells, as evidenced by increased expression of cleaved-caspase-3, cleaved-PARP, and bax, and decreased expression of bcl2...
May 16, 2018: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
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