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Hippo signalling

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https://www.readbyqxmd.com/read/29228123/role-of-yes-associated-protein-1-angiomotin-and-mitogen-activated-kinase-kinase-1-2-in-development-of-the-bovine-blastocyst
#1
Verónica M Negrón-Pérez, Peter J Hansen
The morula-stage embryo is transformed into a blastocyst composed of epiblast, hypoblast and trophectoderm (TE) through mechanisms that, at least in the mouse, involve the Hippo signaling and mitogen-activated kinase (MAPK) pathways. Using the cow as an additional model, we tested the hypotheses that TE and hypoblast differentiation were regulated by the Hippo pathway regulators, YAP1 and AMOT, and MAPK kinase 1/2 (MAPK1/2). The presence of YAP1 and CDX2 in the nucleus and cytoplasm of MII oocytes and embryos was evaluated by immunofluorescence labeling...
December 8, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29226075/prediction-of-target-genes-for-mir-140-5p-in-pulmonary-arterial-hypertension-using-bioinformatics-methods
#2
Fangwei Li, Wenhua Shi, Yixin Wan, Qingting Wang, Wei Feng, Xin Yan, Jian Wang, Limin Chai, Qianqian Zhang, Manxiang Li
The expression of microRNA (miR)-140-5p is known to be reduced in both pulmonary arterial hypertension (PAH) patients and monocrotaline-induced PAH models in rat. Identification of target genes for miR-140-5p with bioinformatics analysis may reveal new pathways and connections in PAH. This study aimed to explore downstream target genes and relevant signaling pathways regulated by miR-140-5p to provide theoretical evidences for further researches on role of miR-140-5p in PAH. Multiple downstream target genes and upstream transcription factors (TFs) of miR-140-5p were predicted in the analysis...
December 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/29225579/regulation-of-tissue-growth-by-the-mammalian-hippo-signaling-pathway
#3
REVIEW
Kevin I Watt, Kieran F Harvey, Paul Gregorevic
The integrative control of diverse biological processes such as proliferation, differentiation, apoptosis and metabolism is essential to maintain cellular and tissue homeostasis. Disruption of these underlie the development of many disease states including cancer and diabetes, as well as many of the complications that arise as a consequence of aging. These biological outputs are governed by many cellular signaling networks that function independently, and in concert, to convert changes in hormonal, mechanical and metabolic stimuli into alterations in gene expression...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29224376/regulation-of-follicle-growth-through-hormonal-factors-and-mechanical-cues-mediated-by-hippo-signaling-pathway
#4
Ikko Kawashima, Kazuhiro Kawamura
The ovary is an interesting organ that shows major structural changes within a short period of time during each reproductive cycle. Follicle development is controlled by local paracrine and systemic endocrine factors. Many hormonal and molecular analyses have been conducted to find the mechanisms underlying structural changes in ovaries, However, exact mechanisms still remain to be determined. Recent development of mechanobiology facilitates the understanding on the contribution of physical forces and changes in the mechanical properties of cells and tissues to physiology and pathophysiology...
December 9, 2017: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/29222344/trip6-inhibits-hippo-signaling-in-response-to-tension-at-adherens-junctions
#5
Shubham Dutta, Sebastian Mana-Capelli, Murugan Paramasivam, Ishani Dasgupta, Heather Cirka, Kris Billiar, Dannel McCollum
The transcriptional co-activator YAP controls cell proliferation, survival, and tissue regeneration in response to changes in the mechanical environment. It is not known how mechanical stimuli such as tension are sensed and how the signal is transduced to control YAP activity. Here, we show that the LIM domain protein TRIP6 acts as part of a mechanotransduction pathway at adherens junctions to promote YAP activity by inhibiting the LATS1/2 kinases. Previous studies showed that vinculin at adherens junctions becomes activated by mechanical tension...
December 8, 2017: EMBO Reports
https://www.readbyqxmd.com/read/29219182/the-emerging-role-of-hippo-signaling-pathway-in-regulating-osteoclast-formation
#6
REVIEW
Wanlei Yang, Weiqi Han, An Qin, Ziyi Wang, Jiake Xu, Yu Qian
A delicate balance between osteoblastic bone formation and osteoclastic bone resorption is crucial for bone homeostasis. This process is regulated by the Hippo signaling pathway including key regulatory molecules RASSF2, NF2, MST1/2, SAV1, LATS1/2, MOB1, YAP and TAZ. It is well established that the Hippo signaling pathway plays an important part in regulating osteoblast differentiation, but its role in osteoclast formation and activation remains poorly understood. In this review, we discuss the emerging role of Hippo-signaling pathway in osteoclast formation and bone homeostasis...
December 8, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29217192/amot-is-required-for-yap-function-in-high-glucose-induced-liver-malignancy
#7
Ya Liu, Zhicheng Lu, Yi Shi, Fenyong Sun
AMOT has been identified as a YAP interactor. However, how AMOT regulates YAP remains unclear and controversy. Here, we identified that besides YAP, AMOT was another Hippo signaling core factor which could be O-GlcNAcylated. Moreover, high glucose (HG) was able to enhance the expression and O-GlcNAcylation of AMOT. We also found that HG stimulated nuclear accumulation, transcription activity, interaction with transcription factor and transcription of target genes of YAP via AMOT, while AMOT acted as a suppressor of YAP in normal glucose level...
December 4, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29215734/study-on-mechanism-about-long-noncoding-rna-malat1-affecting-pancreatic-cancer-by-regulating-hippo-yap-signaling
#8
Yongping Zhou, Ting Shan, Wenzhou Ding, Zhiyuan Hua, Yijun Shen, Zhihua Lu, Bo Chen, Tu Dai
OBJECTIVE: By investigating the migration and invasion ability in pancreatic cancer, this study probed into the lncRNA MALAT1 molecular mechanism on Hippo-YAP signaling. METHODS: The expression of lncRNA MALAT1 in PC tissues and cells was detected by qRT-PCR and western blot. The effect of si-MALAT1 on proliferation was determined by CCK-8 assay. Cell apoptosis, migration and invasion were respectively detected by flow cytometry assay, wound healing assay and transwell assay...
December 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29212575/oct4-is-crucial-for-transdifferentiation-of-hepatocytes-to-biliary-epithelial-cells-in-an-in-vitro-organoid-culture-model
#9
Mboya Doffou, George Adams, William C Bowen, Shirish Paranjpe, Harish S Parihar, Huy Nguyen, George K Michalopoulos, Vishakha Bhave
BACKGROUND: Hepatocyte to biliary transdifferentiation has been documented in various models of bile duct injury. In this process, mature hepatocytes transform into mature biliary epithelial cells by acquiring biliary phenotypic markers. Several signaling pathways including PI3 kinase, Notch, Hes1, Sox9, and Hippo are shown to be involved in the process. However, if Oct4 is involved in hepatocyte to biliary transdifferentiation is unknown. METHODS: We investigated the role of Oct4 in hepatocyte to biliary transdifferentiation utilizing an in vitro organoid culture system as a model of transdifferentiation...
December 6, 2017: Gene Expression
https://www.readbyqxmd.com/read/29208636/homeodomain-interacting-protein-kinase-promotes-tumorigenesis-and-metastatic-cell-behavior
#10
Jessica A Blaquiere, Kenneth Kin Lam Wong, Stephen D Kinsey, Jin Wu, Esther M Verheyen
Aberrations in signaling pathways that regulate tissue growth often lead to tumorigenesis. Homeodomain interacting protein kinase (Hipk) family members are reported to have distinct and contradictory effects on cell proliferation and tissue growth. From these studies it is clear that much remains to be learned about the roles of Hipk family protein kinases in proliferation and cell behaviour. Previous work has shown that Drosophila Hipk is a potent growth regulator, thus we predicted that it could have a role in tumorigenesis...
November 20, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/29207260/a-balance-of-yki-sd-activator-and-e2f1-sd-repressor-complexes-controls-cell-survival-and-affects-organ-size
#11
Peng Zhang, Chunli Pei, Xi Wang, Jinyi Xiang, Bao-Fa Sun, Yongsheng Cheng, Xiaolong Qi, Marco Marchetti, Jia-Wei Xu, Ying-Pu Sun, Bruce A Edgar, Zengqiang Yuan
The Hippo/Yki and RB/E2F pathways both regulate tissue growth by affecting cell proliferation and survival, but interactions between these parallel control systems are poorly defined. In this study, we demonstrate that interaction between Drosophila E2F1 and Sd disrupts Yki/Sd complex formation and thereby suppresses Yki target gene expression. RBF modifies these effects by reducing E2F1/Sd interaction. This regulation has significant effects on apoptosis, organ size, and progenitor cell proliferation. Using a combination of DamID-seq and RNA-seq, we identified a set of Yki targets that play a diversity of roles during development and are suppressed by E2F1...
December 4, 2017: Developmental Cell
https://www.readbyqxmd.com/read/29193599/characterization-of-mice-carrying-a-conditional-tead1-allele
#12
Tong Wen, Qin Yin, Luyi Yu, Guoqing Hu, Jinhua Liu, Wei Zhang, Liang Huang, Huabo Su, Menghong Wang, Jiliang Zhou
The Hippo-YAP pathway is essential for controlling organ size and tumorigenesis. Previous studies have demonstrated that the primary outcome of YAP signaling in the nucleus is achieved by interaction with the transcription factor TEAD1. The YAP/TEAD1 complex binds to DNA element and regulates the expression of genes involved in cell growth. However, constitutive knockout of TEAD1 leads to early embryonic lethality in mice. Thus, generation of a floxed TEAD1 mouse becomes crucial for further understanding mid- to late-gestation and post-natal role of TEAD1...
November 30, 2017: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/29190313/tgf-%C3%AE-signaling-in-cancer-metastasis
#13
Feng Xie, Li Ling, Hans van Dam, Fangfang Zhou, Long Zhang
The transforming growth factor (TGF)-β signaling events are well known to control diverse processes and numerous responses, such as cell proliferation, differentiation, apoptosis, and migration. TGF-β signaling plays context-dependent roles in cancer: in pre-malignant cells TGF-β primarily functions as a tumor suppressor, while in the later stages of cancer TGF-β signaling promotes invasion and metastasis. Recent studies have also suggested that the cross-talk between TGF-β signaling and other signaling pathways, such as Hippo, Wnt, EGFR/RAS, and PI3K/AKT pathways, may substantially contribute to our current understanding of TGF-β signaling and cancer...
November 28, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29185453/dysregulation-of-yap-by-arf-stimulated-with-tea-derived-carbon-nanodots
#14
Yingqiu Xie, Qinglei Sun, Ayan A Nurkesh, Jiang Lu, Sholpan Kauanova, Jinhong Feng, Darkhan Tursynkhan, Qing Yang, Aishabibi Kassymbek, Mirat Karibayev, Korlan Duisenova, Haiyan Fan, Xiao Wang, Limara Manarbek, Aisulu Maipas, Zhenbang Chen, Mannix P Balanay
YAP is a downstream nuclear transcription factor of Hippo pathway which plays an essential role in development, cell growth, organ size and homeostasis. It was previously identified that elevation of YAP in genomics of genetic engineered mouse (GEM) model of prostate cancer is associated with Pten/Trp53 inactivation and ARF elevation hypothesizing the essential crosstalk of AKT/mTOR/YAP with ARF in prostate cancer. However, the detailed function and trafficking of YAP in cancer cells remains unclear. Using GEM microarray model, we found ARF dysregulates Hippo and Wnt pathways...
November 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29183995/deubiquitylase-usp9x-suppresses-tumorigenesis-by-stabilizing-large-tumor-suppressor-kinase-2-lats2-in-the-hippo-pathway
#15
Chu Zhu, Xinyan Ji, Haitao Zhang, Qi Zhou, Xiaolei Cao, Mei Tang, Yuan Si, Huan Yan, Li Li, Tingbo Liang, Xin-Hua Feng, Bin Zhao
The Hippo pathway plays important roles in controlling organ size and in suppressing tumorigenesis through large tumor suppressor kinase 1/2 (LATS1/2)-mediated phosphorylation of YAP/TAZ transcription co-activators. The kinase activity of LATS1/2 is regulated by phosphorylation in response to extracellular signals. Moreover, LATS2 protein levels are repressed by the ubiquitin-proteasome system in conditions such as hypoxia. However, the mechanism that removes the ubiquitin modification from LATS2 and thereby stabilizes the protein is not well understood...
November 28, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29177764/rock-and-rho-playlist-for-preimplantation-development-streaming-to-hippo-pathway-and-apicobasal-polarity-in-the-first-cell-differentiation
#16
Vernadeth B Alarcon, Yusuke Marikawa
In placental mammalian development, the first cell differentiation produces two distinct lineages that emerge according to their position within the embryo: the trophectoderm (TE, placenta precursor) differentiates in the surface, while the inner cell mass (ICM, fetal body precursor) forms inside. Here, we discuss how such position-dependent lineage specifications are regulated by the RHOA subfamily of small GTPases and RHO-associated coiled-coil kinases (ROCK). Recent studies in mouse show that activities of RHO/ROCK are required to promote TE differentiation and to concomitantly suppress ICM formation...
2018: Advances in Anatomy, Embryology, and Cell Biology
https://www.readbyqxmd.com/read/29176608/computational-derivation-of-a-molecular-framework-for-hair-follicle-biology-from-disease-genes
#17
Rachel K Severin, Xinwei Li, Kun Qian, Andreas C Mueller, Lynn Petukhova
Knowledge about genetic drivers of disease increases the efficiency of interpreting patient DNA sequence and helps to identify and prioritize biological points of intervention. Discoveries of genes with single mutations exerting substantial phenotypic impact reliably provide new biological insight, although such approaches tend to generate knowledge that is disjointed from the complexity of biological systems governed by elaborate networks. Here we sought to facilitate diagnostic sequencing for hair disorders and assess the underlying biology by compiling an archive of 684 genes discovered in studies of monogenic disorders and identifying molecular annotations enriched by them...
November 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29168871/probing-impaired-neurogenesis-in-human-brain-organoids-exposed-to-alcohol
#18
Yujuan Zhu, Li Wang, Fangchao Yin, Yue Yu, Yaqing Wang, Matthew J Shepard, Zhengping Zhuang, Jianhua Qin
The fetal brain is highly vulnerable to ethanol exposure, which can trigger various long-term neuronal disabilities and cognitive dysfunctions. However, a comprehensive understanding of fetal brain development under ethanol exposure is challenging due to the limitations of animal models. Here, we propose a human induced pluripotent stem cell (hiPSC)-based 3D brain organoid model, and explore the mechanisms underlying neural dysfunctions in prenatal alcohol exposure (PAE) in vitro. Brain organoids were examined to resemble brain organogenesis in vivo at early stages during gestation, with specific features of neuronal differentiation, brain regionalization, and cortical organization...
November 23, 2017: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://www.readbyqxmd.com/read/29165337/mirnome-profiling-in-bicuspid-aortic-valve-associated-aortopathy-by-next-generation-sequencing
#19
Andrea Borghini, Ilenia Foffa, Silvia Pulignani, Cecilia Vecoli, Lamia Ait-Ali, Maria Grazia Andreassi
The molecular mechanisms underlying thoracic aortic aneurysm (TAA) in patients with bicuspid aortic valve (BAV) are incompletely characterized. MicroRNAs (miRNAs) may play a major role in the different pathogenesis of aortopathy. We sought to employ next-generation sequencing to analyze the entire miRNome in TAA tissue from patients with BAV and tricuspid aortic valve (TAV). In the discovery stage, small RNA sequencing was performed using the Illumina MiSeq platform in 13 TAA tissue samples (seven patients with BAV and six with TAV)...
November 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29162747/therapeutic-effect-of-a-novel-wnt-pathway-inhibitor-on-cardiac-regeneration-after-myocardial-infarction
#20
Chunyu Zeng, Dezhong Yang, Wenbin Fu, Liangpeng Li, Xuewei Xia, Qiao Liao, Rongchuan Yue, Hongmei Chen, Xiongwen Chen, Songzhu An, Wei Eric Wang
After myocardial infarction (MI), the heart is difficult to repair because of great loss of cardiomyoctyes and lack of cardiac regeneration. Novel drug candidates that aim at reducing pathological remodeling and stimulating cardiac regeneration are highly desirable. In this study, we identified if and how a novel porcupine inhibitor CGX1321 influenced MI and cardiac regeneration. Permanent ligation of left anterior descending (LAD) coronary artery was performed in mice to induce MI injury. Cardiac function was measured by echocardiography, infarct size was examined by TTC staining...
November 21, 2017: Clinical Science (1979-)
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