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https://www.readbyqxmd.com/read/29050326/different-effection-of-p-1125val-ala-and-rs11954856-in-apc-on-wnt-signaling-pathway
#1
Fei-Feng Li, Zhi-Xun Zhao, Peng Yan, Song Wang, Zheng Liu, Qiong Zhang, Xiao-Ning Zhang, Chang-Hao Sun, Xi-Shan Wang, Gui-Yu Wang, Shu-Lin Liu
Colorectal cancer (CRC) is among the most common and fatal forms of solid tumors worldwide and more than two thirds of CRC and adenomas patients have APC gene mutations. APC is a key regulator in the Wnt/β-catenin signaling pathway but its roles in CRC remains to be elucidated. In this study, we compared APC genes between CRC patients and controls to determine possible associations of nucleotide changes in the APC gene with the pathways involved in CRC pathogenesis. All participants received physical and enteroscopic examinations...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29036275/porcupine-dependent-wnt-activity-within-the-uterine-epithelium-is-essential-for-fertility
#2
Omar Farah, Steffen Biechele, Janet Rossant, Daniel Dufort
The secretion of mammalian Wnt ligands within the cell is dependent on the activity of Porcupine, a gene located on the X-chromosome that encodes for a membrane bound o-acyl transferase. Here, we report that post-natal ablation of Porcupine in the uterine luminal epithelium alone results in the decrease in endometrial gland number. Despite having uterine glands, mutant females are completely infertile. Epithelial ablation of Porcupine causes defects in timely apposition of the lumen, along with failure to respond to artificial decidual induction...
October 4, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29028954/1-benzyl-indole-3-carbinol-is-a-highly-potent-new-small-molecule-inhibitor-of-wnt-%C3%AE-catenin-signaling-in-melanoma-cells-that-coordinately-inhibits-cell-proliferation-and-disrupts-expression-of-microphthalmia-associated-transcription-factor-isoform-m
#3
Aishwarya Kundu, Michelle G Khouri, Sheila Aryana, Gary L Firestone
1-Benzyl-indole-3-carbinol (1-benzyl-I3C), a synthetic analogue of the crucifer derived natural phytochemical I3C, displayed significantly wider sensitivity and anti-proliferative potency in melanoma cells than the natural compound. Unlike I3C, which targets mainly oncogenic BRAF-expressing cells, 1-benzyl I3C effectively inhibited proliferation of melanoma cells with a more extensive range of mutational profiles, including those expressing wild type BRAF. In both cultured melanoma cell lines and in vivo in melanoma cell-derived tumor xenografts, 1-benzyl-I3C disrupted canonical Wnt/β-catenin signaling that resulted in the down regulation of β-catenin protein levels with a concomitant increase in levels of the β-catenin destruction complex components GSK3β and Axin...
September 23, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/29020614/gene-editing-in-rat-embryonic-stem-cells-to-produce-in%C3%A2-vitro-models-and-in%C3%A2-vivo-reporters
#4
Yaoyao Chen, Sonia Spitzer, Sylvia Agathou, Ragnhildur Thora Karadottir, Austin Smith
Rat embryonic stem cells (ESCs) offer the potential for sophisticated genome engineering in this valuable biomedical model species. However, germline transmission has been rare following conventional homologous recombination and clonal selection. Here, we used the CRISPR/Cas9 system to target genomic mutations and insertions. We first evaluated utility for directed mutagenesis and recovered clones with biallelic deletions in Lef1. Mutant cells exhibited reduced sensitivity to glycogen synthase kinase 3 inhibition during self-renewal...
October 10, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28982712/tfcp2l1-represses-multiple-lineage-commitment-of-mouse-embryonic-stem-cells-through-mta1-and-lef1
#5
Kuisheng Liu, Yan Zhang, Dahai Liu, Qi-Long Ying, Shoudong Ye
Tfcp2l1 is a transcription factor critical for mouse embryonic stem cell (mESC) self-renewal. How Tfcp2l1 maintains the pluripotent state of mESCs, however, remains unknown. Here, we show that knockdown of Tfcp2l1 in mESCs induces the expression of endoderm, mesoderm and trophectoderm markers. Functional analysis of mutant forms of Tfcp2l1 revealed that Tfcp2l1 depends on its N terminus and CP2-like domain to maintain the undifferentiated state of mESCs. The N terminus of Tfcp2l1 is mainly associated with the suppression of mesoderm and trophectoderm differentiation, while the CP2-like domain is closely related to the suppression of endoderm commitment...
October 5, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28978307/mir-216b-inhibits-cell-proliferation-by-targeting-foxm1-in-cervical-cancer-cells-and-is-associated-with-better-prognosis
#6
Shanyang He, Bing Liao, Yalan Deng, Chang Su, Jiuling Tuo, Jun Liu, Shuzhong Yao, Lin Xu
BACKGROUND: Our previous study showed FOXM1 expression was significantly up-regulated in cervical cancer, and was associated with poor prognosis. To clarify miRNAs-FOXM1 modulation pathways, in this study, we investigated the relationships between miR-216b and FOXM1 and the role of miR-216b in cell proliferation and prognosis of cervical cancer patients. METHODS: Western blotting and qPCR were used to determine expression of FOXM1, cell cycle related factors and miR-216b level...
October 4, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28963476/comparative-transcriptome-analysis-of-mink-neovison-vison-skin-reveals-the-key-genes-involved-in-the-melanogenesis-of-black-and-white-coat-colour
#7
Xingchao Song, Chao Xu, Zongyue Liu, Zhigang Yue, Linling Liu, Tongao Yang, Bo Cong, Fuhe Yang
Farmed mink (Neovison vison) is one of the most important fur-bearing species worldwide, and coat colour is a crucial qualitative characteristic that contributes to the economic value of the fur. To identify additional genes that may play important roles in coat colour regulation, Illumina/Solexa high-throughput sequencing technology was used to catalogue the global gene expression profiles in mink skin with two different coat colours (black and white). RNA-seq analysis indicated that a total of 12,557 genes were differentially expressed in black versus white minks, with 3,530 genes up-regulated and 9,027 genes down-regulated in black minks...
September 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28955954/lgr4-is-required-for-sequential-molar-development
#8
Yukiko Yamakami, Koki Kohashi, Kazunori Oyama, Yasuaki Mohri, Shizu Hidema, Katsuhiko Nishimori
Tooth development requires proliferation, differentiation, and specific migration of dental epithelial cells, through well-organized signaling interactions with mesenchymal cells. Recently, it has been reported that leucine-rich repeat-containing G protein coupled receptor 4 (LGR4), the receptor of R-spondins, is expressed in many epithelial cells in various organs and tissues and is essential for organ development and stem cell maintenance. Here, we report that LGR4 contributes to the sequential development of molars in mice...
December 2016: Biochemistry and Biophysics Reports
https://www.readbyqxmd.com/read/28947883/network-analysis-based-on-tcga-reveals-hub-genes-in-colon-cancer
#9
Fenzan Wu, Guoping Yuan, Junjie Chen, Chengzu Wang
Colorectal cancer (CRC) is the third most widespread cancer in the world. Although many advances have been made in molecular biology, novel approaches are still required to reveal molecular mechanisms for the diagnosis and therapy of colon cancer. In this study, we aimed to determine and analyse the hub genes of CRC. First, we explored the mRNA and microRNA (miRNA) expression profiles of colon carcinoma, then we screened target genes of differentially expressed miRNAs and obtained the intersection between differently expressed genes and target genes...
2017: Contemporary Oncology Współczesna Onkologia
https://www.readbyqxmd.com/read/28944964/wnt-%C3%AE-catenin-and-erk-pathway-activation-a-possible-mechanism-of-photobiomodulation-therapy-with-light-emitting-diodes-that-regulate-the-proliferation-of-human-outer-root-sheath-cells
#10
Jung E Kim, Young J Woo, Ki M Sohn, Kwan H Jeong, Hoon Kang
BACKGROUND: Outer root sheath cells (ORSCs) play important roles in maintaining hair follicle structure and provide support for the bulge area. The hair growth promoting effects of photobiomodulation therapy (PBMT) have been reported, but the mechanisms for this in human ORCs (hORSCs) have rarely been studied. OBJECTIVE: The aim of this study was to investigate the effect of various wavelengths of light-emitting diode (LED) irradiation on human ORSCs (hORSCs). METHODS: LED irradiation effects on hORSC proliferation and migration were examined with MTT assay, BrdU incorporation assay and migration assays...
September 25, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28943339/%C3%AE-catenin-coordinates-with-jup-and-the-tcf1-gata6-axis-to-regulate-human-embryonic-stem-cell-fate
#11
Hongwei Sun, Xiaohu Wang, Kuisheng Liu, Mengmeng Guo, Yan Zhang, Qi-Long Ying, Shoudong Ye
β-catenin-mediated signaling has been extensively studied in regard to its role in the regulation of human embryonic stem cells (hESCs). However, the results are controversial and the mechanism by which β-catenin regulates the hESC fate remains unclear. Here, we report that β-catenin and γ-catenin are functionally redundant in mediating hESC adhesion and are required for embryoid body formation, but both genes are dispensable for hESC maintenance, as the undifferentiated state of β-catenin and γ-catenin double deficient hESCs can be maintained...
September 21, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28934958/integrated-network-analysis-to-explore-the-key-genes-regulated-by-parathyroid-hormone-receptor-1-in-osteosarcoma
#12
Donghui Guan, Honglai Tian
BACKGROUND: As an invasive malignant tumor, osteosarcoma (OS) has high mortality. Parathyroid hormone receptor 1 (PTHR1) contributes to maintaining proliferation and undifferentiated state of OS. This study is designed to reveal the action mechanisms of PTHR1 in OS. METHODS: Microarray dataset GSE46861, which included six PTHR1 knockdown OS samples and six control OS samples, was obtained from the Gene Expression Omnibus database. The differentially expressed genes (DEGs) were identified and then performed with enrichment analysis separately using the limma package and DAVID online tool...
September 21, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28924388/spatiotemporal-expression-of-wnt-%C3%AE-catenin-signaling-during-morphogenesis-and-odontogenesis-of-deciduous-molar-in-miniature-pig
#13
Xiaoshan Wu, Yan Li, Fu Wang, Lei Hu, Yang Li, Jinsong Wang, Chunmei Zhang, Songlin Wang
The canonical Wnt/β-catenin signaling pathway has been shown to play essential roles in tooth initiation and early tooth development. However, the role of Wnt/β-catenin signaling in cusp patterning and crown calcification in large mammals are largely unknown. In our previous study, miniature pigs were used as the animal model due to the similarity of tooth anatomy and replacement pattern between miniature pig and human. Dynamic gene expression of third deciduous molar (DM3) in miniature pig at early stages was profiled using microarray method and expression of Wnt genes was significantly correlate with odontogenesis...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28924044/nuclear-insulin-like-growth-factor-1-receptor-phosphorylates-proliferating-cell-nuclear-antigen-and-rescues-stalled-replication-forks-after-dna-damage
#14
Ahmed Waraky, Yingbo Lin, Dudi Warsito, Felix Haglund, Eiman Aleem, Olle Larsson
We have previously shown that the insulin like growth factor 1 receptor (IGF1R) translocates to the cell nucleus, where it binds to enhancer like regions and increases gene transcription. Further studies have demonstrated that nuclear IGF1R (nIGF1R) physically and functionally interacts with some nuclear proteins, i.e. the lymphoid enhancer binding factor 1 (Lef1), histone H3, and Brahma related gene 1 proteins. In the present study, we identified the proliferating cell nuclear antigen (PCNA) as a nIGF1R binding partner...
September 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28916968/hmgb-proteins-and-arthritis
#15
REVIEW
Noboru Taniguchi, Yasuhiko Kawakami, Ikuro Maruyama, Martin Lotz
The high-mobility group box (HMGB) family includes four members: HMGB1, 2, 3 and 4. HMGB proteins have two functions. In the nucleus, HMGB proteins bind to DNA in a DNA structure-dependent but nucleotide sequence-independent manner to function in chromatin remodeling. Extracellularly, HMGB proteins function as alarmins, which are endogenous molecules released upon tissue damage to activate the immune system. HMGB1 acts as a late mediator of inflammation and contributes to prolonged and sustained systemic inflammation in subjects with rheumatoid arthritis...
September 15, 2017: Human Cell
https://www.readbyqxmd.com/read/28895414/knockdown-of-tripartite-motif-containing-28-suppresses-the-migration-invasion-and-epithelial-mesenchymal-transition-in-ovarian-carcinoma-cells-through-down-regulation-of-wnt-%C3%AE-catenin-signaling-pathway
#16
B Deng, S Zhang, Y Zhang, Y Miao, X Meng, K Guo
Tripartite motif containing 28 (TRIM28) is a transcriptional corepressor of Kruppel-associated box zinc finger protein, which has been reported to participate in carcinogenesis. Nonetheless, whether TRIM28 plays a role in the metastasis of ovarian carcinoma (OC) is unclear and requires further investigation. In this study, two OC cell lines (A2780 and OVCAR-3) with stable low expression of TRIM28 were established via RNA interference. We found that the migratory and invasive ability of TRIM28-silenced OC cells significantly decreased...
September 12, 2017: Neoplasma
https://www.readbyqxmd.com/read/28894380/lef1-as1-a-long-noncoding-rna-promotes-malignancy-in-glioblastoma
#17
Jin Wang, Xiaoyang Liu, Changsheng Yan, Jie Liu, Songtao Wang, Yongzhi Hong, Aihua Gu, Peng Zhao
OBJECTIVES: The long-noncoding RNAs (lncRNAs) are identified as new crucial regulators of diverse cellular processes in glioblastoma (GBM) tissues. However, the expression pattern and biological function of lncRNAs remain largely unknown. Here, for the first time, the effects of lncRNA lymphoid enhancer-binding factor 1 antisense RNA 1 (LEF1-AS1) on GBM progression both in vitro and in vivo are investigated. MATERIALS AND METHODS: Expression profiles of LEF1-AS1 in GBM specimens were investigated by bioinformatics analyses...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28857495/identification-of-dysregulated-lncrnas-profiling-and-metastasis-associated-lncrnas-in-colorectal-cancer-by-genome-wide-analysis
#18
Yan Chen, Xiang Yu, Yongcan Xu, Hua Shen
The colorectal cancer (CRC) is one of the leading causes of cancer-related death worldwide, but the pathogenesis of CRC remains not well-known. Increasing studies have highlighted the critical roles of long noncoding RNAs (lncRNAs) in tumorigenesis and cancer cells metastasis, however, the expression pattern, biological roles of lncRNAs, and the mechanisms responsible for their function in CRC remain elusive. In this study, we performed a genome-wide comprehensive analysis of lncRNAs profiling and clinical relevance to identify novel lncRNAs for the further study in CRC...
October 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28846687/%C3%AE-catenin-is-required-for-taste-bud-cell-renewal-and-behavioral-taste-perception-in-adult-mice
#19
Dany Gaillard, Spencer G Bowles, Ernesto Salcedo, Mingang Xu, Sarah E Millar, Linda A Barlow
Taste stimuli are transduced by taste buds and transmitted to the brain via afferent gustatory fibers. Renewal of taste receptor cells from actively dividing progenitors is finely tuned to maintain taste sensitivity throughout life. We show that conditional β-catenin deletion in mouse taste progenitors leads to rapid depletion of progenitors and Shh+ precursors, which in turn causes taste bud loss, followed by loss of gustatory nerve fibers. In addition, our data suggest LEF1, TCF7 and Wnt3 are involved in a Wnt pathway regulatory feedback loop that controls taste cell renewal in the circumvallate papilla epithelium...
August 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28844837/prostaglandin-e1-and-its-analog-misoprostol-inhibit-human-cml-stem-cell-self-renewal-via-ep4-receptor-activation-and-repression-of-ap-1
#20
Fengyin Li, Bing He, Xiaoke Ma, Shuyang Yu, Rupali R Bhave, Steven R Lentz, Kai Tan, Monica L Guzman, Chen Zhao, Hai-Hui Xue
Effective treatment of chronic myelogenous leukemia (CML) largely depends on the eradication of CML leukemic stem cells (LSCs). We recently showed that CML LSCs depend on Tcf1 and Lef1 factors for self-renewal. Using a connectivity map, we identified prostaglandin E1 (PGE1) as a small molecule that partly elicited the gene expression changes in LSCs caused by Tcf1/Lef1 deficiency. Although it has little impact on normal hematopoiesis, we found that PGE1 treatment impaired the persistence and activity of LSCs in a pre-clinical murine CML model and a xenograft model of transplanted CML patient CD34(+) stem/progenitor cells...
September 7, 2017: Cell Stem Cell
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