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https://www.readbyqxmd.com/read/28823082/mir-3910-promotes-the-growth-and-migration-of-cancer-cells-in-the-progression-of-hepatocellular-carcinoma
#1
Lina Cheng, Hongwei Wang, Shuangyin Han
INTRODUCTION: Previous studies have reported that specific depletion of mammalian sterile-like kinase (MST1) in the mouse liver driven Hepatocellular carcinoma (HCC). However, how the expression of MST1 was regulated in the progression of HCC remains largely unknown. MATERIALS AND METHODS: The expression of miR-3910 in the HCC tissues and cell lines were examined using q-PCR. The functions of miR-3910 in HCC were examined using MTT assay, Boyden chamber assay and soft agar assay...
August 19, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28814946/protein-signatures-of-molecular-pathways-in-non-small-cell-lung-carcinoma-nsclc-comparison-of-glycoproteomics-and-global-proteomics
#2
Shuang Yang, Lijun Chen, Daniel W Chan, Qing Kay Li, Hui Zhang
BACKGROUND: Non-small cell lung carcinoma (NSCLC) remains the leading cause of cancer deaths in the United States. More than half of NSCLC patients have clinical presentations with locally advanced or metastatic disease at the time of diagnosis. The large-scale genomic analysis of NSCLC has demonstrated that molecular alterations are substantially different between adenocarcinoma (ADC) and squamous cell carcinoma (SqCC). However, a comprehensive analysis of proteins and glycoproteins in different subtypes of NSCLC using advanced proteomic approaches has not yet been conducted...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28802229/tgf-%C3%AE-mediated-repression-of-mst1-by-dnmt1-promotes-glioma-malignancy
#3
Zhifei Guo, Guangyuan Li, Erbao Bian, Chun-Chun Ma, Jinghai Wan, Bing Zhao
Human gliomas are related to high rates of morbidity and mortality. TGF-β promotes the growth of glioma cells, and correlate with the degree of malignancy of human gliomas. However, the molecular mechanisms involved in the malignant function of TGF-β are not fully elucidated. Here, we showed that TGF-β induced the downregulation of MST1 expression in U87 and U251 glioma cells. Treatment of glioma cells with the DNA methylation inhibitor 5-aza-2'-deoxycytidine (5-AzadC) prevented the loss of MST1 expression...
August 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28757479/the-functions-of-the-hippo-signaling-pathway-in-immune-cells
#4
Yu Shujuan, Geng Jing, Chen Lanfen
The Hippo signaling pathway, first identified in Drosophila, has emerged as a critical regulator for controlling the size of organs. Activation of the Hippo signaling pathway negatively regulates the Yorkie ortholog YAP in multiple organs, important in the regulation of cell proliferation, differentiation, and apoptosis during development. The Serine/Threonine protein kinases MST1 and MST2, mammalian homologs of the Drosophila Hippo kinase, play central roles in the Hippo signaling pathway in mammals. Recent studies reveal that non-canonical Hippo signaling pathways are also involved in the regulation of various other biological processes, particularly the important roles of MST1 and MST2 kinases in immune cell activation, adhesion, migration, growth, and apoptosis...
July 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28757478/the-roles-and-mechanisms-of-mst1-2-in-the-innate-immune-response
#5
Zhou Xin, Li Weiyun, Wang Hongyan
The Hippo signaling pathway regulates cell proliferation, organ size and tissue regeneration through a series of kinase cascades. MST1/2 is the mammalian orthologue of the core kinase Hippo, which is crucial for the activation of downstream signaling. Additionally, MST1/2 has been reported to play important roles in cell differentiation, morphology and cytoskeleton reorganization. Recent evidence suggests that MST1/2 is involved in the regulation of T cell adhesion, migration, homing and Treg cell maturation and functions...
July 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28753558/hgfl-mediated-ron-signaling-supports-breast-cancer-stem-cell-phenotypes-via-activation-of-non-canonical-%C3%AE-catenin-signaling
#6
Sasha J Ruiz-Torres, Nancy M Benight, Rebekah A Karns, Elyse E Lower, Jun-Lin Guan, Susan E Waltz
Breast cancer stem cells (BCSCs), which drive tumor progression, recurrence, and metastasis, are considered a major challenge for breast cancer treatments, thus the discovery of novel pathways regulating BCSC maintenance remains essential to develop new strategies to effectively target this population and combat disease mortality. The HGFL-RON signaling is overexpressed in human breast cancers and is associated with increased breast cancer progression, metastasis, and poor prognosis. Here, we report that overexpression of RON/MST1R and HGFL/MST1 in cell lines and primary tumors increases BCSC self-renewal, numbers, and tumorigenic potential after syngeneic transplantation...
July 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28752853/regulation-of-hippo-pathway-transcription-factor-tead-by-p38-mapk-induced-cytoplasmic-translocation
#7
Kimberly C Lin, Toshiro Moroishi, Zhipeng Meng, Han-Sol Jeong, Steven W Plouffe, Yoshitaka Sekido, Jiahuai Han, Hyun Woo Park, Kun-Liang Guan
The Hippo pathway controls organ size and tissue homeostasis, with deregulation leading to cancer. The core Hippo components in mammals are composed of the upstream serine/threonine kinases Mst1/2, MAPK4Ks and Lats1/2. Inactivation of these upstream kinases leads to dephosphorylation, stabilization, nuclear translocation and thus activation of the major functional transducers of the Hippo pathway, YAP and its paralogue TAZ. YAP/TAZ are transcription co-activators that regulate gene expression primarily through interaction with the TEA domain DNA-binding family of transcription factors (TEAD)...
July 28, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28698384/palmitic-acid-dysregulates-the-hippo-yap-pathway-and-inhibits-angiogenesis-by-inducing-mitochondrial-damage-and-activating-the-cytosolic-dna-sensor-cgas-sting-irf3-signaling
#8
Liangshuai Yuan, Yun Mao, Wei Luo, Weiwei Wu, Hao Xu, Xing Li Wang, Ying H Shen
Impaired angiogenesis and wound healing carry significant morbidity and mortality in diabetic patients. Metabolic stress from hyperglycemia and elevated free fatty acids have been shown to inhibit endothelial angiogenesis. However, the underlying mechanisms remain poorly understood. In this study, we show that dysregulation of the Hippo-YAP pathway, an important signaling in regulating tissue repair and regeneration, underlies palmitic acid (PA) -induced inhibition of endothelial angiogenesis. PA inhibited endothelial cell proliferation, migration and tube formation, which were associated with increased MST1 expression, YAP phosphorylation/inactivation and nuclear exclusion...
July 11, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28612556/-effects-of-msp-on-the-proliferation-migration-and-invasion-of-human-non-small-cell-lung-cancer-cells
#9
Xia Liu, Shi-Hang Wei, Xue-Ni Shi, Yi-Nan Zuo, Xue-Ling He, Hai-Lin Yin
OBJECTIVES: To determine the effects of macrophage stimulating protein (Msp) on the proliferation, migration and invasion of human non-small cell lung cancer cells PC14. METHODS: The eukaryotic expression vector for st1was constructed and transfected into Msp(-)and RON(-)human non-small cell lung cancer cells PC14. The expression of st1mRNA in PC14 cells was observed by RT-PCR. The expression levels of Msp protein in PC14, PC14-st1-pEGFP-N1 and PC14-pEGFP-N1 groups as well as the expression of RON in PC14 and SKBR-3 cells were detected by Western blot...
January 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28552397/morin-attenuates-diethylnitrosamine-induced-rat-liver-fibrosis-and-hepatic-stellate-cell-activation-by-co-ordinated-regulation-of-hippo-yap-and-tgf-%C3%AE-1-smad-signaling
#10
NaveenKumar Perumal, MadanKumar Perumal, Devaraj Halagowder, NiranjaliDevaraj Sivasithamparam
Despite great progress in understanding the activation of hepatic stellate cells (HSCs) during liver fibrosis, therapeutic approaches to inhibit HSC activation remain very limited. Recent reports highlight Yes-associated protein (Yap) and transforming growth factor-β1 (TGF-β1) as critical regulators of HSC activation and henceforth a compound targeting Hippo/Yap and TGF-β1/Smad pathways would be a potential anti-fibrotic candidate. Morin, a dietary flavonoid, was earlier reported to inhibit HSC proliferation and induction of apoptosis of cultured HSCs, mainly by suppressing Wnt/β-catenin and NF-κB signaling, but its effect on Hippo/Yap and TGF-β1/Smad pathways was not determined...
September 2017: Biochimie
https://www.readbyqxmd.com/read/28534197/pcmt1-ameliorates-neuronal-apoptosis-by-inhibiting-the-activation-of-mst1-after-subarachnoid-hemorrhage-in-rats
#11
Ligen Shi, Ammar Al-Baadani, Keren Zhou, Anwen Shao, Shenbin Xu, Sheng Chen, Jianmin Zhang
Mammalian sterile 20-like kinase 1 (MST1) is found to promote neuronal apoptosis. Protein-L-isoaspartate (D-aspartate) O-methyltransferase (PCMT1), an anti-apoptosis factor, was recently identified as an MST1-interacting protein. This study aims to explore the potential role of PCMT1 in reducing MST1-induced neuronal apoptosis after subarachnoid hemorrhage (SAH) in rats. One hundred ninety-eight male Sprague-Dawley rats were used. An exogenous PCMT1 agonist, CGP 3466B, was injected subcutaneously 1 h after the SAH induced by endovascular perforation...
May 22, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28527887/mst1-deficiency-promotes-b-cell-responses-by-cd4-t-cell-derived-il-4-resulting-in-hypergammaglobulinemia
#12
Eunchong Park, Myun Soo Kim, Ju Han Song, Kyung-Hye Roh, Rana Lee, Tae Sung Kim
MST1 deficiency causes T and B cell lymphopenia, resulting in combined immunodeficiency. However, MST1-deficient patients also exhibit autoimmune-like symptoms such as hypergammaglobulinemia and autoantibody production. Recent studies have shown that the autoimmune responses observed in MST1-deficient patients were most likely attributable to defective regulatory T (Treg) cells instead of intrinsic signals in MST1-lacking B cells. Nevertheless, it is not determined how MST1 deficiency in T cells breaks B cell tolerance and causes systemic autoimmune-like phenotypes...
July 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28487214/eif4e-phosphorylation-by-mst1-reduces-translation-of-a-subset-of-mrnas-but-increases-lncrna-translation
#13
Kyung-Won Min, Sylvia Davila, Richard W Zealy, Lawson T Lloyd, In Young Lee, Rumi Lee, Kyung Hye Roh, Ahjin Jung, Jacek Jemielity, Eui-Ju Choi, Jeong Ho Chang, Je-Hyun Yoon
Post-transcriptional gene regulation is an important step in eukaryotic gene expression. The last step to govern production of nascent peptides is during the process of mRNA translation. mRNA translation is controlled by many translation initiation factors that are susceptible to post-translational modifications. Here we report that one of the translation initiation factors, eIF4E, is phosphorylated by Mammalian Ste20-like kinase (MST1). Upon phosphorylation, eIF4E weakly interacts with the 5' CAP to inhibit mRNA translation...
May 6, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28487119/the-mammalian-ste20-like-kinase-1-mst1-is-a-substrate-for-the-apoptosis-inhibiting-protein-kinase-ck2
#14
Christina Servas, Sandra Kiehlmeier, Julia Hach, Rebecca Gross, Claudia Götz, Mathias Montenarh
Apoptosis and the response to cell stress are evolutionary highly conserved mechanisms. Both processes require strict regulation, which is often performed by protein kinases. The mammalian Sterile 20-like kinase 1 (MST1) is a pro-apoptotic protein kinase, which is activated and cleaved by caspases upon the induction of cell stress. Being a phosphoprotein itself, the activity of MST1 is regulated by phosphorylation. Protein kinase CK2 is an anti-apoptotic protein kinase which seems to be involved in the regulation of many different cellular processes including apoptosis...
May 6, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28480597/melatonin-protects-against-diabetic-cardiomyopathy-through-mst1-sirt3-signaling
#15
Mingming Zhang, Jie Lin, Shanjie Wang, Zheng Cheng, Jianqiang Hu, Tingting Wang, Wanrong Man, Tao Yin, Wenyi Guo, Erhe Gao, Russel J Reiter, Haichang Wang, Dongdong Sun
This study investigated the effects of melatonin on diabetic cardiomyopathy (DCM) and determined the underlying mechanisms. Echocardiography indicated that melatonin notably mitigated the adverse left ventricle remodeling and alleviated cardiac dysfunction in DCM. The mechanisms were attributed to increased autophagy, reduced apoptosis, and alleviated mitochondrial dysfunction. Furthermore, melatonin inhibited Mst1 phosphorylation and promoted Sirt3 expression in DCM. These results indicated that melatonin may exert its effects through Mst1/Sirt3 signaling...
May 8, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28469576/plant-produced-asialo-erythropoietin-restores-pancreatic-beta-cell-function-by-suppressing-mammalian-sterile-20-like-kinase-mst1-and-caspase-3-activation
#16
Elena Arthur, Farooqahmed S Kittur, Yuan Lin, Chiu-Yueh Hung, David C Sane, Jiahua Xie
Pancreatic beta-cell death adversely contributes to the progression of both type I and II diabetes by undermining beta-cell mass and subsequently diminishing endogenous insulin production. Therapeutics to impede or even reverse the apoptosis and dysfunction of beta-cells are urgently needed. Asialo-rhuEPO, an enzymatically desialylated form of recombinant human erythropoietin (rhuEPO), has been shown to have cardioprotective and neuroprotective functions but with no adverse effects like that of sialylated rhuEPO...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28465479/kctd11-inhibits-growth-and-metastasis-of-hepatocellular-carcinoma-through-activating-hippo-signaling
#17
Rongliang Tong, Beng Yang, Heng Xiao, Chuanhui Peng, Wendi Hu, Xiaoyu Weng, Shaobing Cheng, Chengli Du, Zhen Lv, Chaofeng Ding, Lin Zhou, Haiyang Xie, Jian Wu, Shusen Zheng
A lack of effective prognostic biomarkers and molecular targets is a serious problem in hepatocellular carcinoma. KCTD11, reported as a tumor suppressor, are still not well understood. In this study, KCTD11 was found low-expressed in HCC tissues and cell lines. The HCC patients with low expression of KCTD11 suggested shorter overall survival. We found KCTD11 inhibiting cell proliferation in vitro and tumor growth in vivo, by activating p21 and repressing cycle related proteins. KCTD11 also inhibited cell adhesion by decreasing CTGF and CLDN1...
June 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28454447/inhibitory-effect-and-mechanism-of-exogenous-mammalian-sterile-20-like-kinase-1-on-the-growth-of-human-colorectal-cancer
#18
Jian Wu, Xiaohong Yang, Hongfei Lu, Liqiao Liu, Baohua Xu, Shuangyan Zheng, Bo Yu, Kemin Jie, Fusheng Wan
The present study aimed to observe the inhibitory effect and preliminary mechanism of exogenous mammalian sterile 20-like kinase 1 (MST1) on the growth of colorectal cancer SW480 cells. The SW480 cells were randomly divided into the following groups: Control, empty enhanced green fluorescent protein (EGFP) plasmid (pEGFP-N1), MST1 EGFP plasmid (pEGFP-MST1), 20 µmol/l fluorouracil (5-FU) and pEGFP-MST1 + 5-FU. An MTS colorimetric assay was used to detect cell viability, Hoechst 33342 staining was used to observe cell apoptosis, and western blotting and immunohistochemistry were used to detect the levels of the proteins MST1, yes-associated protein (YAP), phospho-YAP1 (Ser127), p53 and p53 upregulated modulator of apoptosis (PUMA)...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28448802/ddk-promotes-tumor-chemoresistance-and-survival-via-multiple-pathways
#19
Nanda Kumar Sasi, Arjun Bhutkar, Nathan J Lanning, Jeffrey P MacKeigan, Michael Weinreich
DBF4-dependent kinase (DDK) is a two-subunit kinase required for initiating DNA replication at individual origins and is composed of CDC7 kinase and its regulatory subunit DBF4. Both subunits are highly expressed in many diverse tumor cell lines and primary tumors, and this is correlated with poor prognosis. Inhibiting DDK causes apoptosis of tumor cells, but not normal cells, through a largely unknown mechanism. Firstly, to understand why DDK is often overexpressed in tumors, we identified gene expression signatures that correlate with DDK high- and DDK low-expressing lung adenocarcinomas...
May 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28387539/expression-of-phosphorylated-hippo-pathway-kinases-mst1-2-and-lats1-2-in-her2-positive-and-triple-negative-breast-cancer-patients-treated-with-neoadjuvant-therapy
#20
Cristiana Ercolani, Anna Di Benedetto, Irene Terrenato, Laura Pizzuti, Luigi Di Lauro, Domenico Sergi, Francesca Sperati, Simonetta Buglioni, Maria Teresa Ramieri, Lucia Mentuccia, Teresa Gamucci, Letizia Perracchio, Edoardo Pescarmona, Marcella Mottolese, Maddalena Barba, Patrizia Vici, Ruggero De Maria, Marcello Maugeri-Saccà
The Hippo kinases MST1/2 and LATS1/2 inhibit the oncoproteins TAZ/YAP and regulate T cell function. Hippo kinases also cooperate with the ATR-Chk1 and ATM-Chk2 pathways, central orchestrators of the DNA damage response (DDR). We hypothesized that MST1/2 and LATS1/2 localization differently impacts the efficacy of neoadjuvant therapy (NAT) in breast cancer, being protective when expressed in the cytoplasm of tumor cells and in tumor-infiltrating lymphocytes, whereas representing molecular determinants of chemoresistance when present in the nucleus as a consequence of their cooperation with the DDR...
May 4, 2017: Cancer Biology & Therapy
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