Figure S1 AB DE 1.2 1.2 3.5 1.2 C 3 1 1 Eya1-1 1 Shrna: 2.5 * 0.8 0.8 0.8 * Eya1 2 ** **
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NIH Public Access Author Manuscript Stem Cells
NIH Public Access Author Manuscript Stem Cells. Author manuscript; available in PMC 2015 July 01. NIH-PA Author ManuscriptPublished NIH-PA Author Manuscript in final edited NIH-PA Author Manuscript form as: Stem Cells. 2014 July ; 32(7): 1956–1967. doi:10.1002/stem.1672. PRL2/PTP4A2 phosphatase is important for hematopoietic stem cell self-renewal Michihiro Kobayashia, Yunpeng Baib, Yuanshu Dongb, Hao Yua, Sisi Chenb, Rui Gaoa, Lujuan Zhangb, Mervin C. Yodera,b, Reuben Kapura,b, Zhong-Yin Zhangb,*, and Yan Liua,b,* aDepartment of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana 46202 bDepartment of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202 Abstract Hematopoietic stem cell (HSC) self-renewal is tightly controlled by cytokines and other signals in the microenvironment. While stem cell factor (SCF) is an early acting cytokine that activates the receptor tyrosine kinase KIT and promotes HSC maintenance, how SCF/KIT signaling is regulated in hematopoietic stem cells is poorly understood. The protein tyrosine phosphatase 4A (PTP4A) family [aka PRL (phosphatase of regenerating liver) phosphatases], consisting of PTP4A1/PRL1, PTP4A2/PRL2 and PTP4A3/PRL3, represents an intriguing group of phosphatases implicated in cell proliferation and tumorigenesis. However, the role of PTP4A in hematopoiesis remains elusive. To define the role of PTP4A in hematopoiesis, we analyzed HSC behavior in Ptp4a2 (Prl2) deficient mice. We found that Ptp4a2 deficiency impairs HSC self- renewal as revealed by serial bone marrow transplantation assays. Moreover, we observed that Ptp4a2 null hematopoietic stem and progenitor cells (HSPCs) are more quiescent and show reduced activation of the AKT and ERK signaling. -
The Role of PI3P Phosphatases in the Regulation of Autophagy
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector FEBS Letters 584 (2010) 1313–1318 journal homepage: www.FEBSLetters.org Review The role of PI3P phosphatases in the regulation of autophagy Isabelle Vergne a,*, Vojo Deretic a,b a Department of Molecular Genetics and Microbiology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA b Department of Cell Biology and Physiology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA article info abstract Article history: Autophagy initiation is strictly dependent on phosphatidylinositol 3-phosphate (PI3P) synthesis. Received 31 December 2009 PI3P production is under tight control of PI3Kinase, hVps34, in complex with Beclin-1. Mammalian Revised 15 February 2010 cells express several PI3P phosphatases that belong to the myotubularin family. Even though some Accepted 16 February 2010 of them have been linked to serious human diseases, their cellular function is largely unknown. Two Available online 24 February 2010 recent studies indicate that PI3P metabolism involved in autophagy initiation is further regulated by Edited by Noboru Mizushima the PI3P phosphatases Jumpy and MTMR3. Additional pools of PI3P, upstream of mTOR and on the endocytic pathway, may modulate autophagy indirectly, suggesting that other PI3P phosphatases might be involved in this process. This review sums up our knowledge on PI3P phosphatases and Keywords: Autophagy discusses the recent progress on their role in autophagy. Myotubularin Published by Elsevier B.V. on behalf of the Federation of European Biochemical Societies. PI3P Phosphatase Jumpy MTMR14 1. Introduction PI3P phosphatases were one of the likely candidates as it is known that the phosphoinositide, PI3,4,5P3 and its signaling can be down- PI3P synthesis has long been recognized as one of the key regulated by PI3,4,5P3 phosphatase, PTEN. -
Myotubularin-Related Protein (MTMR) 9 Determines the Enzymatic Activity, Substrate Specificity, and Role in Autophagy of MTMR8
Myotubularin-related protein (MTMR) 9 determines the enzymatic activity, substrate specificity, and role in autophagy of MTMR8 Jun Zoua,1, Chunfen Zhangb,1,2, Jasna Marjanovicc, Marina V. Kisselevab, Philip W. Majerusb,d,2, and Monita P. Wilsonb,2 aDepartment of Pathology and Immunology, bDivision of Hematology, Department of Internal Medicine, and dDepartment of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110; and cDivision of Basic and Pharmaceutical Sciences, St. Louis College of Pharmacy, St. Louis, MO 63110 Contributed by Philip W. Majerus, May 1, 2012 (sent for review February 24, 2012) The myotubularins are a large family of inositol polyphosphate myotubularin proteins (16–21). One mechanism that regulates 3-phosphatases that, despite having common substrates, subsume the myotubularins is the formation of heterodimers between unique functions in cells that are disparate. The myotubularin catalytically active and inactive proteins. The interaction between family consists of 16 different proteins, 9 members of which different myotubularin proteins has a significant effect on en- possess catalytic activity, dephosphorylating phosphatidylinositol zymatic activity. For example, the association of myotubularin 3-phosphate [PtdIns(3)P] and phosphatidylinositol 3,5-bisphos- (MTM1) with MTMR12 results in a threefold increase in the 3- phate [PtdIns(3,5)P2] at the D-3 position. Seven members are in- phosphatase activity of MTM1, alters the subcellular localiza- active because they lack the conserved cysteine residue in the tion of MTM1 from the plasma membrane to the cytosol, and CX5R motif required for activity. We studied a subfamily of homol- attenuates the filopodia formation seen with MTM1 overex- ogous myotubularins, including myotubularin-related protein 6 pression (21, 22). -
Phosphatidylinositol-5-Phosphate Activation and Conserved Substrate Specificity of the Myotubularin Phosphatidylinositol 3-Phosphatases
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector Current Biology, Vol. 13, 504–509, March 18, 2003, 2003 Elsevier Science Ltd. All rights reserved. DOI 10.1016/S0960-9822(03)00132-5 Phosphatidylinositol-5-Phosphate Activation and Conserved Substrate Specificity of the Myotubularin Phosphatidylinositol 3-Phosphatases 1 2 Julia Schaletzky, Stephen K. Dove, displayed activity toward PtdIns3P and PtdIns(3,5)P2, Benjamin Short,1 Oscar Lorenzo,3 but not the other naturally occurring phosphoinositides 3 1 Michael J. Clague, and Francis A. Barr (Figure 1A). The activity toward PtdIns(3,5)P2 adds a 1Department of Cell Biology novel substrate specificity for MTM1 [6] and is consis- Max-Planck-Institute of Biochemistry tent with reports that MTMR2 and MTMR3 use PtdIns3P Am Klopferspitz 18a and PtdIns(3,5)P2 as substrates [10, 11]. Purified MTMR6 Martinsried, 82152 showed the same substrate specificity as MTM1 (Figure Germany 1C), while the active site mutant protein MTMR6C336S 2 School of Biosciences lacked any detectable activity toward either PtdIns3P University of Birmingham or PtdIns(3,5)P2. To confirm that MTM1 hydrolyses The Medical School PtdIns(3,5)P2, we performed an alternate analysis of activ- Birmingham B15 2TT ity described previously for MTMR3 [10]. This assay is 3 Physiological Laboratory carried out in living yeast cells and is useful for establishing University of Liverpool 3-phosphatase activity against PtdIns(3,5)P2, since it Crown Street allows detection of the reaction product PtdIns5P, which Liverpool L69 3BX is not normally detectable in yeast [10, 12, 13]. -
A Computational Approach for Defining a Signature of Β-Cell Golgi Stress in Diabetes Mellitus
Page 1 of 781 Diabetes A Computational Approach for Defining a Signature of β-Cell Golgi Stress in Diabetes Mellitus Robert N. Bone1,6,7, Olufunmilola Oyebamiji2, Sayali Talware2, Sharmila Selvaraj2, Preethi Krishnan3,6, Farooq Syed1,6,7, Huanmei Wu2, Carmella Evans-Molina 1,3,4,5,6,7,8* Departments of 1Pediatrics, 3Medicine, 4Anatomy, Cell Biology & Physiology, 5Biochemistry & Molecular Biology, the 6Center for Diabetes & Metabolic Diseases, and the 7Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202; 2Department of BioHealth Informatics, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202; 8Roudebush VA Medical Center, Indianapolis, IN 46202. *Corresponding Author(s): Carmella Evans-Molina, MD, PhD ([email protected]) Indiana University School of Medicine, 635 Barnhill Drive, MS 2031A, Indianapolis, IN 46202, Telephone: (317) 274-4145, Fax (317) 274-4107 Running Title: Golgi Stress Response in Diabetes Word Count: 4358 Number of Figures: 6 Keywords: Golgi apparatus stress, Islets, β cell, Type 1 diabetes, Type 2 diabetes 1 Diabetes Publish Ahead of Print, published online August 20, 2020 Diabetes Page 2 of 781 ABSTRACT The Golgi apparatus (GA) is an important site of insulin processing and granule maturation, but whether GA organelle dysfunction and GA stress are present in the diabetic β-cell has not been tested. We utilized an informatics-based approach to develop a transcriptional signature of β-cell GA stress using existing RNA sequencing and microarray datasets generated using human islets from donors with diabetes and islets where type 1(T1D) and type 2 diabetes (T2D) had been modeled ex vivo. To narrow our results to GA-specific genes, we applied a filter set of 1,030 genes accepted as GA associated. -
Circhipk3 Facilitates the G2/M Transition in Prostate Cancer Cells by Sponging Mir-338-3P
OncoTargets and Therapy Dovepress open access to scientific and medical research Open Access Full Text Article ORIGINAL RESEARCH CircHIPK3 Facilitates the G2/M Transition in Prostate Cancer Cells by Sponging miR-338-3p This article was published in the following Dove Press journal: OncoTargets and Therapy Fengchun Liu1 Background: Circular RNAs (circRNAs) play a crucial role in gene expression regulation. Yanru Fan 1 CircHIPK3 is a circRNA derived from Exon 2 of HIPK3 gene and its role in prostate cancer Liping Ou1 (PCa) is still unclear. fl Ting Li1 Methods: CCK8 assays, ow cytometry and colony formation assays were performed to assess Jiaxin Fan1 the effects of circHIPK3 in PCa cells. Bioinformatics analysis, RNA pull-down assay, RNA immunoprecipitation assay (RIP), and luciferase activity assay were performed to dissect the Limei Duan1 mechanism underlying circHIPK3-mediated G2/M transition in PCa cells. Jinxiao Yang1 1 Results: CircHIPK3 expression was upregulated in PCa cells and prostate cancer tissues. Chunli Luo Overexpression of circHIPK3 or circHIPK3 silencing altered PCa viability, proliferation and 2 Xiaohou Wu apoptosis in vitro. CircHIPK3 could sponge miR-338-3p and inhibit its activity, resulting in 1Department of Laboratory Diagnosis, increased expression of Cdc25B and Cdc2 in vitro. Chongqing Medical University, Yuzhong, Conclusion: CircHIPK3 promotes G2/M transition and induces PCa cell proliferation by Chongqing 408000, People’s Republic of China; 2Department of Urology, The First sponging miR-338-3p and increasing the -
Exosome-Mediated MIR211 Modulates Tumor Microenvironment Via the DUSP6-ERK5 Axis and Contributes to BRAFV600E Inhibitor Resistan
bioRxiv preprint doi: https://doi.org/10.1101/548818; this version posted February 13, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. Exosome-mediated MIR211 modulates tumor microenvironment via the DUSP6-ERK5 axis and contributes to BRAFV600E inhibitor resistance in melanoma. Bongyong Lee1,3, Anupama Sahoo3, Junko Sawada1,3, John Marchica1,3, Sanjay Sahoo3, Fabiana I. A. L. Layng4, Darren Finlay4, Joseph Mazar5, Piyush Joshi1, Masanobu Komatsu1,3, Kristiina Vuori4, Garth Powis4, Petrus R. de Jong4, Animesh Ray6,7, and Ranjan J. Perera 1,2,3* 1 Department of Cancer and Blood Disorders Institute, Johns Hopkins All Children’s Hospital, St. Petersburg, FL 33701 USA 2 Department of Oncology, Sydney Kimmel Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21287 USA 3 Sanford Burnham Prebys Medical Discovery Institute, Orlando, FL 32827 USA 4 Sanford Burnham Prebys Medical Discovery Institute, NCI-Designated Cancer Center, La Jolla, CA 92037, USA 5 Nemours Children Hospital, Orlando, FL 32827 USA 6 Keck Graduate Institute, Claremont CA 91711 USA, 7 Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125 USA. *Correspondence: Ranjan Perera Tel: 1-727-767-3491 Email: [email protected] 1 bioRxiv preprint doi: https://doi.org/10.1101/548818; this version posted February 13, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. ABSTRACT The microRNA MIR211 is an important regulator of melanoma tumor cell behavior. -
9. Atypical Dusps: 19 Phosphatases in Search of a Role
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Digital.CSIC Transworld Research Network 37/661 (2), Fort P.O. Trivandrum-695 023 Kerala, India Emerging Signaling Pathways in Tumor Biology, 2010: 185-208 ISBN: 978-81-7895-477-6 Editor: Pedro A. Lazo 9. Atypical DUSPs: 19 phosphatases in search of a role Yolanda Bayón and Andrés Alonso Instituto de Biología y Genética Molecular, CSIC-Universidad de Valladolid c/ Sanz y Forés s/n, 47003 Valladolid, Spain Abstract. Atypical Dual Specificity Phosphatases (A-DUSPs) are a group of 19 phosphatases poorly characterized. They are included among the Class I Cys-based PTPs and contain the active site motif HCXXGXXR conserved in the Class I PTPs. These enzymes present a phosphatase domain similar to MKPs, but lack any substrate targeting domain similar to the CH2 present in this group. Although most of these phosphatases have no more than 250 amino acids, their size ranges from the 150 residues of the smallest A-DUSP, VHZ/DUSP23, to the 1158 residues of the putative PTP DUSP27. The substrates of this family include MAPK, but, in general terms, it does not look that MAPK are the general substrates for the whole group. In fact, other substrates have been described for some of these phosphatases, like the 5’CAP structure of mRNA, glycogen, or STATs and still the substrates of many A-DUSPs have not been identified. In addition to the PTP domain, most of these enzymes present no additional recognizable domains in their sequence, with the exception of CBM-20 in laforin, GTase in HCE1 and a Zn binding domain in DUSP12. -
Mechanisms of Action for Small Molecules Revealed by Structural Biology in Drug Discovery
International Journal of Molecular Sciences Review Mechanisms of Action for Small Molecules Revealed by Structural Biology in Drug Discovery Qingxin Li 1,* and CongBao Kang 2,* 1 Guangdong Provincial Engineering Laboratory of Biomass High Value Utilization, Guangdong Provincial Bioengineering Institute (Guangzhou Sugarcane Industry Research Institute), Guangdong Academy of Sciences, Guangzhou 510316, China 2 Experimental Drug Development Centre (EDDC), Agency for Science, Technology and Research (A*STAR), 10 Biopolis Road, Chromos, #05-01, Singapore 138670, Singapore * Correspondence: [email protected] (Q.L.); [email protected] (C.K.); Tel.: +86-020-84168436 (Q.L.); +65-64070602 (C.K.) Received: 12 June 2020; Accepted: 20 July 2020; Published: 24 July 2020 Abstract: Small-molecule drugs are organic compounds affecting molecular pathways by targeting important proteins. These compounds have a low molecular weight, making them penetrate cells easily. Small-molecule drugs can be developed from leads derived from rational drug design or isolated from natural resources. A target-based drug discovery project usually includes target identification, target validation, hit identification, hit to lead and lead optimization. Understanding molecular interactions between small molecules and their targets is critical in drug discovery. Although many biophysical and biochemical methods are able to elucidate molecular interactions of small molecules with their targets, structural biology is the most powerful tool to determine the mechanisms of action for both targets and the developed compounds. Herein, we reviewed the application of structural biology to investigate binding modes of orthosteric and allosteric inhibitors. It is exemplified that structural biology provides a clear view of the binding modes of protease inhibitors and phosphatase inhibitors. -
Identification of Candidate Genes and Pathways Associated with Obesity
animals Article Identification of Candidate Genes and Pathways Associated with Obesity-Related Traits in Canines via Gene-Set Enrichment and Pathway-Based GWAS Analysis Sunirmal Sheet y, Srikanth Krishnamoorthy y , Jihye Cha, Soyoung Choi and Bong-Hwan Choi * Animal Genome & Bioinformatics, National Institute of Animal Science, RDA, Wanju 55365, Korea; [email protected] (S.S.); [email protected] (S.K.); [email protected] (J.C.); [email protected] (S.C.) * Correspondence: [email protected]; Tel.: +82-10-8143-5164 These authors contributed equally. y Received: 10 October 2020; Accepted: 6 November 2020; Published: 9 November 2020 Simple Summary: Obesity is a serious health issue and is increasing at an alarming rate in several dog breeds, but there is limited information on the genetic mechanism underlying it. Moreover, there have been very few reports on genetic markers associated with canine obesity. These studies were limited to the use of a single breed in the association study. In this study, we have performed a GWAS and supplemented it with gene-set enrichment and pathway-based analyses to identify causative loci and genes associated with canine obesity in 18 different dog breeds. From the GWAS, the significant markers associated with obesity-related traits including body weight (CACNA1B, C22orf39, U6, MYH14, PTPN2, SEH1L) and blood sugar (PRSS55, GRIK2), were identified. Furthermore, the gene-set enrichment and pathway-based analysis (GESA) highlighted five enriched pathways (Wnt signaling pathway, adherens junction, pathways in cancer, axon guidance, and insulin secretion) and seven GO terms (fat cell differentiation, calcium ion binding, cytoplasm, nucleus, phospholipid transport, central nervous system development, and cell surface) which were found to be shared among all the traits. -
"Description"" ""Generatio"
TABLE S4 "ID ""Description"" ""GeneRatio"" ""BgRatio"" ""pvalue"" ""p.adjust"" ""qvalue"" ""geneID"" ""Count""" "GO:0003712 ""GO:0003712"" ""transcription coregulator activity"" ""84/1859"" ""454/22744"" 9.49597175224444e-13 9.80933882006851e-10 8.20651874588704e-10 ""Ncoa2/Zfp451/Dhx9/Hnrnpu/Cited2/Ncoa7/Ccar1/ Sirt1/Arid5b/Sirt6/Med1/Rara/Atxn7l3/Ddx5/Wbp2/Hdac9/Zmynd11/Cdyl/ Mier3/Sfmbt1/Gata4/Med4/Basp1/Zfpm2/Zhx2/Ddx17/Mkl2/Hes1/Nrip1/Usp16/ Elob/Rrp1b/Rxrb/Kat2b/Mta3/Hsbp1l1/Tle4/Sfr1/Eid1/Cops2/Sox12/Raly/ Ncoa6/Rbm39/Lpin3/Skil/Jade1/Maml3/Supt20/Med12l/Hdgf/Glmp/Nfib/Jun/ Pex14/Rere/Psmd9/Ncor2/Trim24/Ruvbl1/Rybp/Bhlhe40/Atf7ip/Ube3a/Mef2a/ Nrg1/Rbpms/Cnot7/Sin3b/Pou4f2/Pkn1/Cdyl2/Taf5l/Irf2bp2/Birc2/Yap1/ Skor1/Tfdp2/Rad54l2/Ctnnb1/Limd1/Med14/Rap2c/Tbl1x"" 84" "GO:0003779 ""GO:0003779"" ""actin binding"" ""65/1859"" ""414/22744"" 2.57546466939442e-07 8.86818334494813e-05 7.41914559148359e-05 ""Actr3/Cxcr4/Hnrnpu/Enah/Utrn/Epb41l2/Marcks/Ctnna3/Eef2/Pawr/ Ccdc88a/Anxa6/Gas7/Lasp1/Tns4/Syne2/Sipa1l1/Syne3/Phactr1/Enc1/Pxk/ Vcl/Ang/Myo10/Mtss1/Triobp/Mkl2/Afdn/Daam2/Svil/Ctnna1/Synpo/Myo5b/ Nrap/Ablim1/Shtn1/Fmnl2/Itprid2/Ino80/Pfn2/Myoz2/Pdlim5/Cap1/Macf1/ Epb41/Wasf2/Myom3/Ywhah/Coro1c/Ssh1/Hip1/Ppp1r9a/Wasl/Ctnna2/Mical3/ Eps8/Tlnrd1/Myom2/Klhl2/Sntb2/Spire2/Coro2b/Clasp2/Hdac6/Diaph2"" 65" "GO:0046332 ""GO:0046332"" ""SMAD binding"" ""22/1859"" ""84/22744"" 6.87941766027971e-07 0.000177660961076723 0.000148631628923412 ""Bmpr2/Cited2/Usp15/Ddx5/Axin2/Ppm1a/Yy1/Gata4/Tgif1/Ldlrad4/Smad7/ Acvr2a/Pmepa1/Skil/Trim33/Jun/Mef2a/Ipo7/Skor1/Rnf111/Tcf12/Ctnnb1"" -
Mirc11 Disrupts Inflammatory but Not Cytotoxic Responses of NK Cells
Published OnlineFirst September 12, 2019; DOI: 10.1158/2326-6066.CIR-18-0934 Research Article Cancer Immunology Research Mirc11 Disrupts Inflammatory but Not Cytotoxic Responses of NK Cells Arash Nanbakhsh1, Anupallavi Srinivasamani1, Sandra Holzhauer2, Matthew J. Riese2,3,4, Yongwei Zheng5, Demin Wang4,5, Robert Burns6, Michael H. Reimer7,8, Sridhar Rao7,8, Angela Lemke9,10, Shirng-Wern Tsaih9,10, Michael J. Flister9,10, Shunhua Lao1,11, Richard Dahl12, Monica S. Thakar1,11, and Subramaniam Malarkannan1,3,4,9,11 Abstract Natural killer (NK) cells generate proinflammatory cyto- g–dependent clearance of Listeria monocytogenes or B16F10 kines that are required to contain infections and tumor melanoma in vivo by NK cells. These functional changes growth. However, the posttranscriptional mechanisms that resulted from Mirc11 silencing ubiquitin modifiers A20, regulate NK cell functions are not fully understood. Here, we Cbl-b, and Itch, allowing TRAF6-dependent activation of define the role of the microRNA cluster known as Mirc11 NF-kB and AP-1. Lack of Mirc11 caused increased translation (which includes miRNA-23a, miRNA-24a, and miRNA-27a) of A20, Cbl-b, and Itch proteins, resulting in deubiquityla- in NK cell–mediated proinflammatory responses. Absence tion of scaffolding K63 and addition of degradative K48 of Mirc11 did not alter the development or the antitumor moieties on TRAF6. Collectively, our results describe a func- cytotoxicity of NK cells. However, loss of Mirc11 reduced tion of Mirc11 that regulates generation of proinflammatory generation of proinflammatory factors in vitro and interferon- cytokines from effector lymphocytes. Introduction TRAF2 and TRAF6 promote K63-linked polyubiquitination that is required for subcellular localization of the substrates (20), Natural killer (NK) cells generate proinflammatory factors and and subsequent activation of NF-kB (21) and AP-1 (22).