1
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Riggs CL, Kedersha N, Amarsanaa M, Zubair SN, Ivanov P, Anderson P. UBAP2L contributes to formation of P-bodies and modulates their association with stress granules. J Cell Biol 2024; 223:e202307146. [PMID: 39007803 PMCID: PMC11248227 DOI: 10.1083/jcb.202307146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 03/06/2024] [Accepted: 06/10/2024] [Indexed: 07/16/2024] Open
Abstract
Stress triggers the formation of two distinct cytoplasmic biomolecular condensates: stress granules (SGs) and processing bodies (PBs), both of which may contribute to stress-responsive translation regulation. Though PBs can be present constitutively, stress can increase their number and size and lead to their interaction with stress-induced SGs. The mechanism of such interaction, however, is largely unknown. Formation of canonical SGs requires the RNA binding protein Ubiquitin-Associated Protein 2-Like (UBAP2L), which is a central SG node protein in the RNA-protein interaction network of SGs and PBs. UBAP2L binds to the essential SG and PB proteins G3BP and DDX6, respectively. Research on UBAP2L has mostly focused on its role in SGs, but not its connection to PBs. We find that UBAP2L is not solely an SG protein but also localizes to PBs in certain conditions, contributes to PB biogenesis and SG-PB interactions, and can nucleate hybrid granules containing SG and PB components in cells. These findings inform a new model for SG and PB formation in the context of UBAP2L's role.
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Affiliation(s)
- Claire L Riggs
- Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Boston, MA, USA
- Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Nancy Kedersha
- Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Boston, MA, USA
- Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Misheel Amarsanaa
- Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Boston, MA, USA
- Department of Medicine, Harvard Medical School, Boston, MA, USA
- Department of Biological Sciences, Wellesley College, Wellesley, MA, USA
| | - Safiyah Noor Zubair
- Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Boston, MA, USA
- Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Pavel Ivanov
- Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Boston, MA, USA
- Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Paul Anderson
- Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Boston, MA, USA
- Department of Medicine, Harvard Medical School, Boston, MA, USA
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2
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Li-Villarreal N, Rasmussen TL, Christiansen AE, Dickinson ME, Hsu CW. Three-dimensional microCT imaging of mouse heart development from early post-implantation to late fetal stages. Mamm Genome 2023; 34:156-165. [PMID: 36595063 PMCID: PMC10290591 DOI: 10.1007/s00335-022-09976-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 12/15/2022] [Indexed: 01/04/2023]
Abstract
Comprehensive detailed characterization of new mouse models can be challenging due to the individual focus involved in developing these models. Often models are engineered to test a specific hypothesis in a limited number of tissues, stages, and/or other contexts. Whether or not the model produces the desired phenotypes, phenotyping beyond the desired context can be extremely work intensive and these studies are often not undertaken. However, the general information resulting from broader phenotyping can be invaluable to the wider scientific community. The International Mouse Phenotyping Consortium (IMPC) and its subsidiaries, like the Knockout Mouse Project (KOMP), has made great strides in streamlining this process. In particular, the use of microCT has been an invaluable resource in examining internal organ systems throughout fetal/developmental stages. Here, we provide several novel vignettes demonstrating the utility of microCT in uncovering cardiac phenotypes both based on human disease correlations and those that are unpredicted.
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Affiliation(s)
- Nanbing Li-Villarreal
- Department of Integrative Physiology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Tara L Rasmussen
- Department of Integrative Physiology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
- Cardiovascular Research Institute, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Audrey E Christiansen
- Department of Integrative Physiology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Mary E Dickinson
- Department of Integrative Physiology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
- Cardiovascular Research Institute, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Chih-Wei Hsu
- Department of Integrative Physiology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
- Cardiovascular Research Institute, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
- Department of Education, Innovation and Technology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
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3
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Asano-Inami E, Yokoi A, Sugiyama M, Hyodo T, Hamaguchi T, Kajiyama H. The association of UBAP2L and G3BP1 mediated by small nucleolar RNA is essential for stress granule formation. Commun Biol 2023; 6:415. [PMID: 37059803 PMCID: PMC10104854 DOI: 10.1038/s42003-023-04754-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 03/24/2023] [Indexed: 04/16/2023] Open
Abstract
Stress granules (SGs) are dynamic, non-membranous structures composed of non-translating mRNAs and various proteins and play critical roles in cell survival under stressed conditions. Extensive proteomics analyses have been performed to identify proteins in SGs; however, the molecular functions of these components in SG formation remain unclear. In this report, we show that ubiquitin-associated protein 2-like (UBAP2L) is a crucial component of SGs. UBAP2L localized to SGs in response to various stresses, and its depletion significantly suppressed SG organization. Proteomics and RNA sequencing analyses found that UBAP2L formed a protein-RNA complex with Ras-GTP-activating protein SH3 domain binding protein 1 (G3BP1) and small nucleolar RNAs (snoRNAs). In vitro binding analysis demonstrated that snoRNAs were required for UBAP2L association with G3BP1. In addition, decreased expression of snoRNAs reduced the interaction between UBAP2L and G3BP1 and suppressed SG formation. Our results reveal a critical role of SG component, the UBAP2L/snoRNA/G3BP1 protein-RNA complex, and provide new insights into the regulation of SG assembly.
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Affiliation(s)
- Eri Asano-Inami
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku Nagoya, 466-8550, Japan.
- Bell Research Center for Reproductive Health and Cancer, Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku Nagoya, 466-8550, Japan.
| | - Akira Yokoi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku Nagoya, 466-8550, Japan.
- Institute for Advanced Research, Nagoya University, Nagoya, Japan.
| | - Mai Sugiyama
- Bell Research Center for Reproductive Health and Cancer, Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku Nagoya, 466-8550, Japan
| | - Toshinori Hyodo
- Department of Biochemistry, Aichi Medical University School of Medicine, Nagakute, Aichi, 480-1195, Japan
| | - Tomonari Hamaguchi
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku Nagoya, 466-8550, Japan
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku Nagoya, 466-8550, Japan
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4
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Lu Z, Gopalan S, Yuan D, Conti DV, Pasaniuc B, Gusev A, Mancuso N. Multi-ancestry fine-mapping improves precision to identify causal genes in transcriptome-wide association studies. Am J Hum Genet 2022; 109:1388-1404. [PMID: 35931050 PMCID: PMC9388396 DOI: 10.1016/j.ajhg.2022.07.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 06/30/2022] [Indexed: 02/06/2023] Open
Abstract
Transcriptome-wide association studies (TWASs) are a powerful approach to identify genes whose expression is associated with complex disease risk. However, non-causal genes can exhibit association signals due to confounding by linkage disequilibrium (LD) patterns and eQTL pleiotropy at genomic risk regions, which necessitates fine-mapping of TWAS signals. Here, we present MA-FOCUS, a multi-ancestry framework for the improved identification of genes underlying traits of interest. We demonstrate that by leveraging differences in ancestry-specific patterns of LD and eQTL signals, MA-FOCUS consistently outperforms single-ancestry fine-mapping approaches with equivalent total sample sizes across multiple metrics. We perform TWASs for 15 blood traits using genome-wide summary statistics (average nEA = 511 k, nAA = 13 k) and lymphoblastoid cell line eQTL data from cohorts of primarily European and African continental ancestries. We recapitulate evidence demonstrating shared genetic architectures for eQTL and blood traits between the two ancestry groups and observe that gene-level effects correlate 20% more strongly across ancestries than SNP-level effects. Lastly, we perform fine-mapping using MA-FOCUS and find evidence that genes at TWAS risk regions are more likely to be shared across ancestries than they are to be ancestry specific. Using multiple lines of evidence to validate our findings, we find that gene sets produced by MA-FOCUS are more enriched in hematopoietic categories than alternative approaches (p = 2.36 × 10-15). Our work demonstrates that including and appropriately accounting for genetic diversity can drive more profound insights into the genetic architecture of complex traits.
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Affiliation(s)
- Zeyun Lu
- Biostatistics Division, Department of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA.
| | - Shyamalika Gopalan
- Center for Genetic Epidemiology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA; Department of Evolutionary Anthropology, Duke University, Durham, NC, USA
| | - Dong Yuan
- Biostatistics Division, Department of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA
| | - David V Conti
- Biostatistics Division, Department of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA; Center for Genetic Epidemiology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Bogdan Pasaniuc
- Bioinformatics Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA, USA; Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA; Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA; Department of Computational Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Alexander Gusev
- Division of Population Sciences, Dana-Farber Cancer Institute & Harvard Medical School, Boston, MA, USA; Division of Genetics, Brigham & Women's Hospital, Boston, MA, USA; Program in Medical and Population Genetics, The Broad Institute, Cambridge, MA, USA
| | - Nicholas Mancuso
- Biostatistics Division, Department of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA; Center for Genetic Epidemiology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA; Quantitative and Computational Biology, University of Southern California, Los Angeles, CA, USA.
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5
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Herlihy AE, Boeing S, Weems JC, Walker J, Dirac-Svejstrup AB, Lehner MH, Conaway RC, Conaway JW, Svejstrup JQ. UBAP2/UBAP2L regulate UV-induced ubiquitylation of RNA polymerase II and are the human orthologues of yeast Def1. DNA Repair (Amst) 2022; 115:103343. [PMID: 35633597 DOI: 10.1016/j.dnarep.2022.103343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/25/2022] [Accepted: 05/09/2022] [Indexed: 11/21/2022]
Abstract
During transcription, RNA polymerase II (RNAPII) faces numerous obstacles, including DNA damage, which can lead to stalling or arrest. One mechanism to contend with this situation is ubiquitylation and degradation of the largest RNAPII subunit, RPB1 - the 'last resort' pathway. This conserved, multi-step pathway was first identified in yeast, and the functional human orthologues of all but one protein, RNAPII Degradation Factor 1 (Def1), have been discovered. Here we show that following UV-irradiation, human Ubiquitin-associated protein 2 (UBAP2) or its paralogue UBAP2-like (UBAP2L) are involved in the ubiquitylation and degradation of RNAPII through the recruitment of Elongin-Cul5 ubiquitin ligase. Together, our data indicate that UBAP2 and UBAP2L are the human orthologues of yeast Def1, and so identify the key missing proteins in the human last resort pathway.
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Affiliation(s)
- Anna E Herlihy
- Mechanisms of Transcription Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Stefan Boeing
- Mechanisms of Transcription Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Juston C Weems
- Department of Biochemistry & Molecular Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA; Stowers Institute for Medical Research, Kansas City, MO 64110, USA
| | - Jane Walker
- Mechanisms of Transcription Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - A Barbara Dirac-Svejstrup
- Mechanisms of Transcription Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK; Department of Cellular and Molecular Medicine, Panum Institute, University of Copenhagen, Blegdamsvej 3B, Copenhagen N 2200, Denmark
| | - Michelle Harreman Lehner
- Mechanisms of Transcription Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Ronald C Conaway
- Department of Biochemistry & Molecular Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA; Stowers Institute for Medical Research, Kansas City, MO 64110, USA
| | - Joan W Conaway
- Department of Biochemistry & Molecular Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA; Stowers Institute for Medical Research, Kansas City, MO 64110, USA
| | - Jesper Q Svejstrup
- Mechanisms of Transcription Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK; Department of Cellular and Molecular Medicine, Panum Institute, University of Copenhagen, Blegdamsvej 3B, Copenhagen N 2200, Denmark.
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6
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Guerber L, Pangou E, Sumara I. Ubiquitin Binding Protein 2-Like (UBAP2L): is it so NICE After All? Front Cell Dev Biol 2022; 10:931115. [PMID: 35794863 PMCID: PMC9250975 DOI: 10.3389/fcell.2022.931115] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 06/01/2022] [Indexed: 12/30/2022] Open
Abstract
Ubiquitin Binding Protein 2-like (UBAP2L, also known as NICE-4) is a ubiquitin- and RNA-binding protein, highly conserved in metazoans. Despite its abundance, its functions have only recently started to be characterized. Several studies have demonstrated the crucial involvement of UBAP2L in various cellular processes such as cell cycle regulation, stem cell activity and stress-response signaling. In addition, UBAP2L has recently emerged as a master regulator of growth and proliferation in several human cancers, where it is suggested to display oncogenic properties. Given that this versatile protein is involved in the regulation of multiple and distinct cellular pathways, actively contributing to the maintenance of cell homeostasis and survival, UBAP2L might represent a good candidate for future therapeutic studies. In this review, we discuss the current knowledge and latest advances on elucidating UBAP2L cellular functions, with an aim to highlight the importance of targeting UBAP2L for future therapies.
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Affiliation(s)
- Lucile Guerber
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Illkirch, France
- Centre National de la Recherche Scientifique UMR 7104, Strasbourg, France
- Institut National de la Santé et de la Recherche Médicale U964, Strasbourg, France
- Université de Strasbourg, Strasbourg, France
| | - Evanthia Pangou
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Illkirch, France
- Centre National de la Recherche Scientifique UMR 7104, Strasbourg, France
- Institut National de la Santé et de la Recherche Médicale U964, Strasbourg, France
- Université de Strasbourg, Strasbourg, France
| | - Izabela Sumara
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Illkirch, France
- Centre National de la Recherche Scientifique UMR 7104, Strasbourg, France
- Institut National de la Santé et de la Recherche Médicale U964, Strasbourg, France
- Université de Strasbourg, Strasbourg, France
- *Correspondence: Izabela Sumara,
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7
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UBAP2L promotes gastric cancer metastasis by activating NF-κB through PI3K/AKT pathway. Cell Death Dis 2022; 8:123. [PMID: 35304439 PMCID: PMC8933503 DOI: 10.1038/s41420-022-00916-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 02/11/2022] [Accepted: 02/24/2022] [Indexed: 02/05/2023]
Abstract
Ubiquitin-associated protein 2-like (UBAP2L) is highly expressed in various types of tumors and has been shown to participate in tumor growth and metastasis; however, its role in gastric cancer (GC) remains unknown. In this study, we observed that UBAP2L expression was markedly elevated in GC tissues and five GC cell lines. Higher expression of UBAP2L was associated with poor prognosis as revealed by bioinformatics analysis on online websites and laboratory experiments. Knockdown of UBAP2L impeded the migration and invasion abilities of GC cell lines. In contrast, its overexpression enhanced the migration and invasion abilities of GC cell lines. Overexpression of UBAP2L also increased the number and size of lung metastatic nodules in vivo. According to the results of mass spectrometry and pathway annotation of the identified proteins, the PI3K/AKT pathway was found to be related to UBAP2L regulation. Further exploration and rescue experiments revealed that UBAP2L stimulates the expression and nuclear aggregation of p65 and promotes the expression of SP1 by activating the PI3K/AKT pathway. In summary, our findings indicate that UBAP2L regulates GC metastasis through the PI3K/AKT/SP1/NF-κB axis. Thus, targeting UBAP2L may be a potential therapeutic strategy for GC.
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8
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Iranzo-Tatay C, Hervas-Marin D, Rojo-Bofill LM, Garcia D, Vaz-Leal FJ, Calabria I, Beato-Fernandez L, Oltra S, Sandoval J, Rojo-Moreno L. Genome-wide DNA methylation profiling in anorexia nervosa discordant identical twins. Transl Psychiatry 2022; 12:15. [PMID: 35013117 PMCID: PMC8748827 DOI: 10.1038/s41398-021-01776-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 11/18/2021] [Accepted: 11/30/2021] [Indexed: 12/26/2022] Open
Abstract
Up until now, no study has looked specifically at epigenomic landscapes throughout twin samples, discordant for Anorexia nervosa (AN). Our goal was to find evidence to confirm the hypothesis that epigenetic variations play a key role in the aetiology of AN. In this study, we quantified genome-wide patterns of DNA methylation using the Infinium Human DNA Methylation EPIC BeadChip array ("850 K") in DNA samples isolated from whole blood collected from a group of 7 monozygotic twin pairs discordant for AN. Results were then validated performing a genome-wide DNA methylation profiling using DNA extracted from whole blood of a group of non-family-related AN patients and a group of healthy controls. Our first analysis using the twin sample revealed 9 CpGs associated to a gene. The validation analysis showed two statistically significant CpGs with the rank regression method related to two genes associated to metabolic traits, PPP2R2C and CHST1. When doing beta regression, 6 of them showed statistically significant differences, including 3 CpGs associated to genes JAM3, UBAP2L and SYNJ2. Finally, the overall pattern of results shows genetic links to phenotypes which the literature has constantly related to AN, including metabolic and psychological traits. The genes PPP2R2C and CHST1 have both been linked to the metabolic traits type 2 diabetes through GWAS studies. The genes UBAP2L and SYNJ2 have been related to other psychiatric comorbidity.
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Affiliation(s)
- C Iranzo-Tatay
- Psychiatry Service, Hospital la Fe, Valencia, Spain
- Department of Psychiatry, Medicine School, University of Valencia, Valencia, Spain
| | - D Hervas-Marin
- Department of Applied Statistics and Operational Research and Quality, Universitat Politècnica de València, Valencia, Spain
| | | | - D Garcia
- Epigenomics Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - F J Vaz-Leal
- Department of Psychiatry, Medicine School, University of Extremadura, Badajoz, Spain
| | - I Calabria
- Epigenomics Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - L Beato-Fernandez
- Eating Disorders and Children's Psychiatry Department, Hospital General, Ciudad Real, Spain
| | - S Oltra
- Genetics and Prenatal Diagnosis Unit, Hospital La fe, Valencia, Spain
| | - J Sandoval
- Epigenomics Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain.
- Biomarkers and Precision Medicine Unit (UByMP), Instituto de Investigación Sanitaria La Fe, Valencia, Spain.
| | - L Rojo-Moreno
- Psychiatry Service, Hospital la Fe, Valencia, Spain
- Department of Psychiatry, Medicine School, University of Valencia, Valencia, Spain
- Consorcio de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
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9
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Lin S, Yan Z, Tang Q, Zhang S. Ubiquitin-associated protein 2 like (UBAP2L) enhances growth and metastasis of gastric cancer cells. Bioengineered 2021; 12:10232-10245. [PMID: 34823423 PMCID: PMC8809994 DOI: 10.1080/21655979.2021.1982308] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 09/14/2021] [Accepted: 09/14/2021] [Indexed: 12/26/2022] Open
Abstract
Ubiquitin-proteasome pathway has emerged as therapeutic targets for cancer. GEPIA database analysis showed that the expression of ubiquitin-associated protein 2 like (UBAP2L) in gastric cancer specimens was significantly higher than that in non-tumor tissue, and its high expression is associated with poor survival of gastric cancer patients. This study aims to investigate the role of UBAP2L in gastric cancer. Real-time PCR and western blot results showed that UBAP2L expression was upregulated in gastric cancer cell lines. Loss- and gain-of-function experiments demonstrated that silencing of UBAP2L inhibited proliferation, migration and invasion, and induced apoptosis of gastric cancer cells, and overexpression of UBAP2L played opposite roles. Nude mice inoculated with UBAP2L-silenced gastric cancer cells generated smaller xenografted tumors in vivo. Furthermore, UBAP2L activated Wnt/β-catenin signaling - the accumulation of nuclear β-catenin and the expression of its downstream targets (cyclin D1, AXIN-2 and c-MYC) was facilitated, whereas knockdown of UBAP2L deactivated this signaling. The tumor-suppressing effect of UBAP2L silencing was abolished by forced activation of β-cateninS33A. UBAP2L has been confirmed as a novel and direct target of miR-148b-3p. The anti-tumor effect of miR-148b-3p was partly reversed by UBAP2L overexpression. The expression of miR-148b-3p was negatively correlated with that of UBAP2L in gastric cancer samples. Overall, our study indicates that UBAP2L is required to maintain malignant behavior of gastric cancer cells, which involves the activation of Wnt/β-catenin signaling pathway. We propose UBAP2L as a potential therapeutic target against gastric cancer.
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Affiliation(s)
- Sihan Lin
- Department of Surgical Oncology, The First Hospital of China Medical University, Shenyang, People’s Republic of China
| | - Zhiyong Yan
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Shenyang Medical College, Shenyang, People’s Republic of China
| | - Qiaofei Tang
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Shenyang Medical College, Shenyang, People’s Republic of China
| | - Shuang Zhang
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Shenyang Medical College, Shenyang, People’s Republic of China
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10
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Guan W, Yang N, Zuo X, Wang X, Cao P, Chu Y, Qin Z, Cheng H, Shi X, Ma T, Xu Z, Sun Y. Heritable Variants in the Chromosome 1q22 Locus Increase Gastric Cancer Risk via Altered Chromatin Looping and Increased UBAP2L Expression. Mol Cancer Res 2021; 19:1992-2002. [PMID: 34535561 DOI: 10.1158/1541-7786.mcr-21-0001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 06/21/2021] [Accepted: 09/13/2021] [Indexed: 12/24/2022]
Abstract
Genome-wide association studies (GWAS) have implicated the 1q22 gastric cancer risk locus in disease, but little is known about its underlying oncogenic functions. This study represents a systematic investigation of the biological significance and potential mechanism associated with the gastric cancer risk of SNP rs2075570(C>T) in 1q22. We identified two functional germline variations (rs2049805-C and rs2974931-G) in an active enhancer in a 64.8 kb high-linkage disequilibrium block of rs2075570. The enhancer upregulated ubiquitin associated protein 2 like (UBAP2L) gene expression over a 960 kb distance by chromatin looping. Gastric cancer tissues expressed significantly higher levels of UBAP2L than was observed in the matched noncancerous tissues, and the UBAP2L expression was negatively correlated with patient survival. Downregulation of UBAP2L inhibited the proliferation and invasion of human gastric cancer cells in vitro and in a xenograft mouse model. Notably, the two mutant variations significantly enforced the enhancer activity and UBAP2L expression. In conclusion, this study revealed two causal variations in the 1q22 region using tag-SNP rs2075570 as a genetic marker. These variations may affect the occurrence and progression of gastric cancer by reinforcing the expression of the 1q22-Enh enhancer-regulated UBAP2L target gene. IMPLICATIONS: Our study provides an important clue of how noncoding germline variations contribute to gastric cancer, which gives a novel insight into understanding the genetic mechanism of gastric cancer.
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Affiliation(s)
- Wei Guan
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of General Surgery, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Nan Yang
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Xianglin Zuo
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of Cell Biology, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Xuchun Wang
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of Cell Biology, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Pingping Cao
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of Cell Biology, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Ying Chu
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of Cell Biology, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Zhongyong Qin
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of Cell Biology, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - He Cheng
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of Cell Biology, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Xiao Shi
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of Cell Biology, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Tingzheng Ma
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of Cell Biology, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Zekuan Xu
- Department of General Surgery, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China. .,Jiangsu Key Lab of Cancer Biomarkers, Prevention & Treatment, Collaborative Innovation Center for Personalized Cancer Medicine, Nanjing Medical University, Nanjing, China
| | - Yujie Sun
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu Province, China. .,Department of Cell Biology, Nanjing Medical University, Nanjing, Jiangsu Province, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention & Treatment, Collaborative Innovation Center for Personalized Cancer Medicine, Nanjing Medical University, Nanjing, China
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11
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Wang Y, Chen Z, Jia C, Bai X, Jiang Y, Zou Z. Analysis of the mTOR Interactome using SILAC technology revealed NICE-4 as a novel regulator of mTORC1 activity. Life Sci 2021; 281:119745. [PMID: 34171383 DOI: 10.1016/j.lfs.2021.119745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 06/15/2021] [Accepted: 06/15/2021] [Indexed: 10/21/2022]
Abstract
The evolutionarily conserved mechanistic target of rapamycin (mTOR) forms two functionally distinct complexes, -the mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2)-which differ in their subunit composition. Although the function of mTORC1 has been studied extensively, the interaction between mTORC1 and the ubiquitin-proteasome system (UPS) remains unclear. To facilitate a thorough understanding of the mechanismby which UPS regulates mTORC1 activity, steady isotope labeling with amino acids in cell culture (SILAC) technology was used to screen for potential mTORC1-interacting UPS members. Fourteen previously unknown proteins bound to mTOR in HEK293 cells with a SILAC ratio (heavy/light, H/L) above 2, five of which are components of the UPS. Subsequent immunoprecipitation analysis confirmed that ubiquitin-relevant protein 2-like (UBAP2L, also known as NICE-4) binds to both mTOR and Raptor, but not Rictor, suggesting that NICE-4 specifically interacts with mTORC1, but not mTORC2. Interestingly, NICE-4 is essential for basic mTORC1 activity in both HeLa cancer cells and HEK293 cells. In addition, NICE-4 depletion markedly suppressed proliferation of both HeLa and HEK293 cells as well as survival of HeLa cells. Collectively, these results revealed the identity of novel mTOR-interacting UPS proteins and established NICE-4 as a critical UPS member that maintains mTORC1 activity.
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Affiliation(s)
- Yun Wang
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China.
| | - Zhenguo Chen
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China.
| | - Chunhong Jia
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China
| | - Xiaochun Bai
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China.
| | - Yu Jiang
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, PA 15213, USA.
| | - Zhipeng Zou
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China.
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12
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Li T, Liu WB, Tian FF, Jiang JJ, Wang Q, Hu FQ, Hu WH, Zhang XS. Gender-specific SBNO2 and VPS13B as a potential driver of osteoporosis development in male ankylosing spondylitis. Osteoporos Int 2021; 32:311-320. [PMID: 32803317 DOI: 10.1007/s00198-020-05593-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 08/07/2020] [Indexed: 12/22/2022]
Abstract
UNLABELLED To identify the critical genes and pathways that related to OP development in male AS patients, bioinformatic gene analysis and qRT-PCR validation were performed. SBNO2 and VPS13B were identified as the potential target for OP development, which may be valuable for the prevention of OP in male AS patients. INTRODUCTION Osteoporosis (OP) is common in men with ankylosing spondylitis (AS). The specific pathogenesis of OP in AS, however, is still unclear. The present study attempted to identify potential genes associated with the development of OP in males with AS. METHODS Gene expression profiles were downloaded from the GSE73754 and GSE35959 datasets from the Gene Expression Omnibus (GEO). Data from OsteoporosAtlas were downloaded as a supplement. Differentially expressed genes (DEGs) were determined with the limma package. The overlapping DEGs between male AS-related genes and OP-related genes were determined. The DEGs were validated by qRT-PCR in the blood samples of males with AS. Weighted gene co-expression network analysis (WGCNA) was utilized to establish a co-expression network to identify the hub genes. RESULTS A total of 17 overlapping DEGs were identified; 6 genes in 17 overlapping DEGs were verified as the essential genes in the pathogenesis of OP in male AS by qRT-PCR analysis. After WGCNA, the modules of MEblue (> 0.6) and MEred (> 0.8) were screened out by the correlation analysis and were determined to function mainly in MAPK signaling pathway and osteoclast differentiation. Analysis of the two modules revealed VPS13B and SBNO2 as key genes due to the high degree of correlation. Both genes play an important role in bone metabolism regulation in male AS. Two hub genes MYD88 in MEblue and NCK1 in MEred with high degree of connectivity were selected. CONCLUSIONS Gender-specific SBNO2 and VPS13B may be key genes involved in OP in male AS.
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Affiliation(s)
- T Li
- Department of Orthopedics, the First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, 100853, China
| | - W-B Liu
- Department of Orthopedics, the First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, 100853, China
| | - F-F Tian
- Clinical Biobank Center, the Medical Innovation Research Division, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, 100853, China
| | - J-J Jiang
- Clinical Biobank Center, the Medical Innovation Research Division, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, 100853, China
| | - Q Wang
- Department of Orthopedics, the First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, 100853, China
| | - F-Q Hu
- Department of Orthopedics, the First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, 100853, China
| | - W-H Hu
- Department of Orthopedics, the First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, 100853, China.
- Department of Orthopedics, the Fourth Medical Centre, Chinese PLA General Hospital, 51 Fucheng Road, Haidian District, Beijing, 100000, China.
| | - X-S Zhang
- Department of Orthopedics, the First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, 100853, China.
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13
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Liu S, Wu M, Lancelot M, Deng J, Gao Y, Roback JD, Chen T, Cheng L. BMI1 enables extensive expansion of functional erythroblasts from human peripheral blood mononuclear cells. Mol Ther 2021; 29:1918-1932. [PMID: 33484967 PMCID: PMC8116606 DOI: 10.1016/j.ymthe.2021.01.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 11/26/2020] [Accepted: 01/12/2021] [Indexed: 01/06/2023] Open
Abstract
Transfusion of red blood cells (RBCs) from ABO-matched but genetically unrelated donors is commonly used for treating anemia and acute blood loss. Increasing demand and insufficient supply for donor RBCs, especially those of universal blood types or free of known and unknown pathogens, has called for ex vivo generation of functional RBCs by large-scale cell culture. However, generating physiological numbers of transfusable cultured RBCs (cRBCs) ex vivo remains challenging, due to our inability to either extensively expand primary RBC precursors (erythroblasts) or achieve efficient enucleation once erythroblasts have been expanded and induced to differentiation and maturation. Here, we report that ectopic expression of the human BMI1 gene confers extensive expansion of human erythroblasts, which can be derived readily from adult peripheral blood mononuclear cells of either healthy donors or sickle cell patients. These extensively expanded erythroblasts (E3s) are able to proliferate exponentially (>1 trillion-fold in 2 months) in a defined culture medium. Expanded E3 cells are karyotypically normal and capable of terminal maturation with approximately 50% enucleation. Additionally, E3-derived cRBCs can circulate in a mouse model following transfusion similar to primary human RBCs. Therefore, we provide a facile approach of generating physiological numbers of human functional erythroblasts ex vivo.
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Affiliation(s)
- Senquan Liu
- Blood and Cell Therapy Institute, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230027, China; Division of Hematology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Mengyao Wu
- Division of Hematology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Division of Hematology, Huashan Hospital of Fudan University, Shanghai 200040, China
| | - Moira Lancelot
- Center for Transfusion and Cellular Therapies, Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Jiusheng Deng
- Center for Transfusion and Cellular Therapies, Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Yongxing Gao
- Division of Hematology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - John D Roback
- Center for Transfusion and Cellular Therapies, Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA.
| | - Tong Chen
- Division of Hematology, Huashan Hospital of Fudan University, Shanghai 200040, China.
| | - Linzhao Cheng
- Blood and Cell Therapy Institute, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230027, China; Division of Hematology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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14
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Thejer BM, Adhikary PP, Kaur A, Teakel SL, Van Oosterum A, Seth I, Pajic M, Hannan KM, Pavy M, Poh P, Jazayeri JA, Zaw T, Pascovici D, Ludescher M, Pawlak M, Cassano JC, Turnbull L, Jazayeri M, James AC, Coorey CP, Roberts TL, Kinder SJ, Hannan RD, Patrick E, Molloy MP, New EJ, Fehm TN, Neubauer H, Goldys EM, Weston LA, Cahill MA. PGRMC1 phosphorylation affects cell shape, motility, glycolysis, mitochondrial form and function, and tumor growth. BMC Mol Cell Biol 2020; 21:24. [PMID: 32245408 PMCID: PMC7119165 DOI: 10.1186/s12860-020-00256-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 03/04/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Progesterone Receptor Membrane Component 1 (PGRMC1) is expressed in many cancer cells, where it is associated with detrimental patient outcomes. It contains phosphorylated tyrosines which evolutionarily preceded deuterostome gastrulation and tissue differentiation mechanisms. RESULTS We demonstrate that manipulating PGRMC1 phosphorylation status in MIA PaCa-2 (MP) cells imposes broad pleiotropic effects. Relative to parental cells over-expressing hemagglutinin-tagged wild-type (WT) PGRMC1-HA, cells expressing a PGRMC1-HA-S57A/S181A double mutant (DM) exhibited reduced levels of proteins involved in energy metabolism and mitochondrial function, and altered glucose metabolism suggesting modulation of the Warburg effect. This was associated with increased PI3K/AKT activity, altered cell shape, actin cytoskeleton, motility, and mitochondrial properties. An S57A/Y180F/S181A triple mutant (TM) indicated the involvement of Y180 in PI3K/AKT activation. Mutation of Y180F strongly attenuated subcutaneous xenograft tumor growth in NOD-SCID gamma mice. Elsewhere we demonstrate altered metabolism, mutation incidence, and epigenetic status in these cells. CONCLUSIONS Altogether, these results indicate that mutational manipulation of PGRMC1 phosphorylation status exerts broad pleiotropic effects relevant to cancer and other cell biology.
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Affiliation(s)
- Bashar M Thejer
- School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, NSW, 2650, Australia
- Department of Biology, College of Science, University of Wasit, Wasit, 00964, Iraq
| | - Partho P Adhikary
- School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, NSW, 2650, Australia
- Present address: Faculty of Pharmaceutical Sciences, The University of British Columbia, Vancouver, V6T 1Z4, Canada
| | - Amandeep Kaur
- School of Chemistry, University of Sydney, Sydney, NSW, 2006, Australia
- Present address: School of Medical Sciences, University of Sydney, Sydney, NSW, 2006, Australia
| | - Sarah L Teakel
- School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, NSW, 2650, Australia
| | - Ashleigh Van Oosterum
- Life Sciences and Health, Faculty of Science, Charles Sturt University, Wagga Wagga, NSW, 2650, Australia
| | - Ishith Seth
- School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, NSW, 2650, Australia
| | - Marina Pajic
- The Kinghorn Cancer Centre, Cancer Division, Garvan Institute of Medical Research, 384 Victoria St, Darlinghurst, Sydney, NSW, 2010, Australia
- St Vincent's Clinical School, Faculty of Medicine, University of NSW, Darlinghurst, 2010, NSW, Australia
| | - Katherine M Hannan
- Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, Victoria, 3010, Australia
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, The Australian National University, ACT, Canberra, 2601, Australia
| | - Megan Pavy
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, The Australian National University, ACT, Canberra, 2601, Australia
| | - Perlita Poh
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, The Australian National University, ACT, Canberra, 2601, Australia
| | - Jalal A Jazayeri
- School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, NSW, 2650, Australia
| | - Thiri Zaw
- Australian Proteome Analysis Facility, Macquarie University, Sydney, NSW, 2109, Australia
| | - Dana Pascovici
- Australian Proteome Analysis Facility, Macquarie University, Sydney, NSW, 2109, Australia
| | - Marina Ludescher
- Department of Gynecology and Obstetrics, University Women's Hospital of Dusseldorf, 40225, Dusseldorf, Germany
| | - Michael Pawlak
- NMI TT Pharmaservices, Protein Profiling, 72770, Reutlingen, Germany
| | - Juan C Cassano
- Particles-Biology Interactions Laboratory, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science & Technology (Empa), Lerchenfeldstrasse 5, CH-9014, St Gallen, Switzerland
| | - Lynne Turnbull
- The ithree institute, University of Technology Sydney, Ultimo, NSW, 2007, Australia
- Present address: GE Healthcare Life Sciences, Issaquah, WA, 98027, USA
| | - Mitra Jazayeri
- Department of Mathematics and Statistics, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Alexander C James
- Ingham Institute for Applied Medical Research, Liverpool, NSW, 2170, Australia
- School of Medicine, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia
- South Western Sydney Clinical School, Faculty of Medicine, The University of New South Wales, Liverpool, NSW, 2170, Australia
| | - Craig P Coorey
- Ingham Institute for Applied Medical Research, Liverpool, NSW, 2170, Australia
- School of Medicine and University of Queensland Centre for Clinical Research, Herston, QLD, 4006, Australia
| | - Tara L Roberts
- Ingham Institute for Applied Medical Research, Liverpool, NSW, 2170, Australia
- School of Medicine, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia
- South Western Sydney Clinical School, Faculty of Medicine, The University of New South Wales, Liverpool, NSW, 2170, Australia
- School of Medicine and University of Queensland Centre for Clinical Research, Herston, QLD, 4006, Australia
| | | | - Ross D Hannan
- Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, Victoria, 3010, Australia
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, The Australian National University, ACT, Canberra, 2601, Australia
- Division of Research, Peter MacCallum Cancer Centre, Melbourne, Victoria, 3000, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, 3010, Australia
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, 3168, Australia
| | - Ellis Patrick
- School of Mathematics and Statistics, University of Sydney, Sydney, NSW, 2006, Australia
| | - Mark P Molloy
- Australian Proteome Analysis Facility, Macquarie University, Sydney, NSW, 2109, Australia
- Present address: The Kolling Institute, The University of Sydney, St Leonards (Sydney), NSW, 2064, Australia
| | - Elizabeth J New
- School of Chemistry, University of Sydney, Sydney, NSW, 2006, Australia
| | - Tanja N Fehm
- Department of Gynecology and Obstetrics, University Women's Hospital of Dusseldorf, 40225, Dusseldorf, Germany
| | - Hans Neubauer
- Department of Gynecology and Obstetrics, University Women's Hospital of Dusseldorf, 40225, Dusseldorf, Germany
| | - Ewa M Goldys
- ARC Centre of Excellence for Nanoscale BioPhotonics, Macquarie University, Sydney, NSW, 2109, Australia
- Present address: The Graduate School of Biomedical Engineering, University of New South Wales, Sydney, Kensington, NSW, 2052, Australia
| | - Leslie A Weston
- Graham Centre for Agricultural Innovation, Charles Sturt University, Boorooma Street, Wagga Wagga, NSW, 2678, Australia
- School of Agricultural and Wine Sciences, Charles Sturt University, Boorooma Street, Wagga Wagga, NSW, 2678, Australia
| | - Michael A Cahill
- School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, NSW, 2650, Australia.
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, The Australian National University, ACT, Canberra, 2601, Australia.
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15
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Das J, Verma D, Gustafsson M, Lerm M. Identification of DNA methylation patterns predisposing for an efficient response to BCG vaccination in healthy BCG-naïve subjects. Epigenetics 2019; 14:589-601. [PMID: 31010371 PMCID: PMC6557603 DOI: 10.1080/15592294.2019.1603963] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/19/2019] [Accepted: 04/02/2019] [Indexed: 12/17/2022] Open
Abstract
The protection against tuberculosis induced by the Bacille Calmette Guérin (BCG) vaccine is unpredictable. In our previous study, altered DNA methylation pattern in peripheral blood mononuclear cells (PBMCs) in response to BCG was observed in a subgroup of individuals, whose macrophages killed mycobacteria effectively ('responders'). These macrophages also showed production of Interleukin-1β (IL-1β) in response to mycobacterial stimuli before vaccination. Here, we hypothesized that the propensity to respond to the BCG vaccine is reflected in the DNA methylome. We mapped the differentially methylated genes (DMGs) in PBMCs isolated from responders/non-responders at the time point before vaccination aiming to identify possible predictors of BCG responsiveness. We identified 43 DMGs and subsequent bioinformatic analyses showed that these were enriched for actin-modulating pathways, predicting differences in phagocytosis. This could be validated by experiments showing that phagocytosis of mycobacteria, which is an event preceding mycobacteria-induced IL-1β production, was strongly correlated with the DMG pattern.
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Affiliation(s)
- Jyotirmoy Das
- Department of Clinical and Experimental Medicine (IKE), Faculty of Medicine and Health Sciences, Linköping University, Linköping, Sweden
| | - Deepti Verma
- Department of Clinical and Experimental Medicine (IKE), Division of Cell Biology (CELLB), Linköping University, Linköping, Sweden
| | - Mika Gustafsson
- Department of Physics, Chemistry and Biology (IFM) Bioinformatics (BION), Linköping University, Linköping, Sweden
| | - Maria Lerm
- Department of Clinical and Experimental Medicine (IKE), Faculty of Medicine and Health Sciences, Linköping University, Linköping, Sweden
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16
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UBAP2L arginine methylation by PRMT1 modulates stress granule assembly. Cell Death Differ 2019; 27:227-241. [PMID: 31114027 PMCID: PMC7205891 DOI: 10.1038/s41418-019-0350-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 04/28/2019] [Accepted: 05/03/2019] [Indexed: 02/06/2023] Open
Abstract
Stress granules (SGs) are discrete assemblies of stalled messenger ribonucleoprotein complexes (mRNPs) that form when eukaryotic cells encounter environmental stress. RNA-binding proteins (RBPs) mediate their condensation by recruiting populations of mRNPs. However, the cellular and molecular mechanisms underlying the role of ubiquitin-associated protein 2-like (UBAP2L) in the regulation of SG dynamics remain elusive. Here, we show that UBAP2L is required for both SG assembly and disassembly. UBAP2L overexpression nucleated SGs under stress-null conditions. The UBAP2L Arg–Gly–Gly (RGG) motif was required for SG competence, and mediated the recruitment of SG components, including mRNPs, RBPs, and ribosomal subunits. The domain of unknown function (DUF) of UBAP2L-mediated interaction with ras GTPase-activating protein-binding protein (G3BP)1/2, and its deletion caused the cytoplasmic–nuclear transport of UBAP2L and G3BP1/2, thereby compromising SG formation. The protein arginine methyltransferase PRMT1 asymmetrically dimethylated UBAP2L by targeting the RGG motif. Increased arginine methylation blocked, whereas its decrease enhanced UBAP2L interactions with SG components, ablating and promoting SG assembly, respectively. These results provide new insights into the mechanisms by which UBAP2L regulates SG dynamics and RNA metabolism.
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17
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Chen X, Hu L, Yang H, Ma H, Ye K, Zhao C, Zhao Z, Dai H, Wang H, Fang Z. DHHC protein family targets different subsets of glioma stem cells in specific niches. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:25. [PMID: 30658672 PMCID: PMC6339410 DOI: 10.1186/s13046-019-1033-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 01/09/2019] [Indexed: 12/21/2022]
Abstract
Background Glioblastomas (GBM) comprise different subsets that exhibit marked heterogeneity and plasticity, leading to a lack of success of genomic profiling in guiding the development of precision medicine approaches against these tumors. Accordingly, there is an urgent need to investigate the regulatory mechanisms for different GBM subsets and identify novel biomarkers and therapeutic targets relevant in the context of GBM-specific niches. The DHHC family of proteins is associated tightly with the malignant development and progression of gliomas. However, the role of these proteins in the plasticity of GBM subsets remains unclear. Methods This study utilized human glioma proneural or mesenchymal stem cells as indicated. The effects of DHHC proteins on different GBM subsets were investigated through in vitro and in vivo assays (i.e., colony formation assay, flow cytometry assay, double immunofluorescence, western blot, and xenograft model). Western blot, co-immunoprecipitation, and liquid chromatograph mass spectrometer-mass spectrometry assays were used to detect the protein complexes of ZDHHC18 and ZDHHC23 in various GBM subtypes, and explore the mechanism of DHHC proteins in targeting different subsets of GSCs in specific niches. Results ZDHHC18 and ZDHHC23 could target the glioma stem cells of different GBM subsets in the context of their specific niches and regulate the cellular plasticity of these subtypes. Moreover, mechanistic investigations revealed that ZDHHC18 and ZDHHC23 competitively interact with a BMI1 E3 ligase, RNF144A, to regulate the polyubiquitination and accumulation of BMI1. These events contributed to the transition of glioma stem cells in GBM and cell survival under the stressful tumor microenvironment. Conclusions Our work highlights the role of DHHC proteins in the plasticity of GBM subsets and reveals that BMI1 represents a potential therapeutic target for human gliomas. Electronic supplementary material The online version of this article (10.1186/s13046-019-1033-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xueran Chen
- Anhui Province Key Laboratory of Medical Physics and Technology; Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, 230031, Anhui, China. .,Hefei Cancer Hospital, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, Anhui, Hefei, 230031, Anhui, China.
| | - Lei Hu
- Anhui Province Key Laboratory of Medical Physics and Technology; Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, 230031, Anhui, China.,University of Science and Technology of China, No. 96, Jin Zhai Road, Hefei, 230031, Anhui, China
| | - Haoran Yang
- Anhui Province Key Laboratory of Medical Physics and Technology; Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, 230031, Anhui, China.,University of Science and Technology of China, No. 96, Jin Zhai Road, Hefei, 230031, Anhui, China
| | - Huihui Ma
- Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, 230031, Anhui, China.,Department of Radiation Oncology, First Affiliated Hospital, Anhui Medical University, No. 218, Jixi Road, Hefei, 230031, Anhui, China
| | - Kaiqin Ye
- Anhui Province Key Laboratory of Medical Physics and Technology; Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, 230031, Anhui, China.,Hefei Cancer Hospital, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, Anhui, Hefei, 230031, Anhui, China
| | - Chenggang Zhao
- Anhui Province Key Laboratory of Medical Physics and Technology; Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, 230031, Anhui, China.,University of Science and Technology of China, No. 96, Jin Zhai Road, Hefei, 230031, Anhui, China
| | - Zhiyang Zhao
- Anhui Province Key Laboratory of Medical Physics and Technology; Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, 230031, Anhui, China.,University of Science and Technology of China, No. 96, Jin Zhai Road, Hefei, 230031, Anhui, China
| | - Haiming Dai
- Anhui Province Key Laboratory of Medical Physics and Technology; Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, 230031, Anhui, China.,Hefei Cancer Hospital, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, Anhui, Hefei, 230031, Anhui, China
| | - Hongzhi Wang
- Anhui Province Key Laboratory of Medical Physics and Technology; Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, 230031, Anhui, China.,Hefei Cancer Hospital, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, Anhui, Hefei, 230031, Anhui, China
| | - Zhiyou Fang
- Anhui Province Key Laboratory of Medical Physics and Technology; Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, 230031, Anhui, China. .,Hefei Cancer Hospital, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, Anhui, Hefei, 230031, Anhui, China.
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18
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Upregulation of UBAP2L in Bone Marrow Mesenchymal Stem Cells Promotes Functional Recovery in Rats with Spinal Cord Injury. Curr Med Sci 2018; 38:1081-1089. [PMID: 30536073 DOI: 10.1007/s11596-018-1987-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 06/12/2018] [Indexed: 02/07/2023]
Abstract
Post-translational modifications of cellular proteins with ubiquitin or ubiquitin-like proteins regulate many cellular processes, such as cell proliferation, differentiation, apoptosis, signal transduction, intercellular immune recognition, inflammatory response, stress response, and DNA repair. Nice4/UBAP2L is an important member in the family of ubiquitin-like proteins, and its biological function remains unknown. This study aimed to investigate the effect of UBAP2L on spinal cord injury (SCI). At first, rat bone marrow mesenchymal stem cells (BMSCs) were infected with adeno-associated virus to induce over-expression of Nice4. Subsequently, the infected BMSCs were transplanted into rats suffering from semi-sectioned SCI. The results showed that the over-expression of Nice4 significantly promoted the proliferation and differentiation of BMSCs. In addition, the transplantation of infected BMSCs into the injured area of SCI rats improved the function repair of SCI. Importantly, the immunohistochemical and hematoxylin-eosin staining and RT-PCR results showed that the number of neuronal cells, oligodendrocytes, and astrocytes was significantly increased in the injured area, along with significantly upregulated expression of cyclin D1 and p38 mitogen-activated protein kinase (MAPK). Meanwhile, the expression of caspase 3 protein was significantly down-regulated. In conclusion, the over-expression of Nice4 gene can promote the functional recovery in SCI rats by promoting cell proliferation and inhibiting apoptosis. The results of this study indicate an alternative option for the clinical treatment of SCI.
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Li Q, Wang W, Hu YC, Yin TT, He J. Knockdown of Ubiquitin Associated Protein 2-Like (UBAP2L) Inhibits Growth and Metastasis of Hepatocellular Carcinoma. Med Sci Monit 2018; 24:7109-7118. [PMID: 30291221 PMCID: PMC6284357 DOI: 10.12659/msm.912861] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The aim of this study was to explore the influence of ubiquitin associated protein 2-like (UBAP2L) on the growth and metastasis of hepatocellular carcinoma (HCC) and its potential underlying mechanism. MATERIAL AND METHODS UBAP2L gene was knocked down in SMMC-7721 by RNA interference and cell function experiments were performed. A subcutaneous xenograft tumor model was constructed to examine the effect of UBAP2L silence on HCC growth. Finally, the whole genomic microarrays were used to screen the potential mechanism of UBAP2L in regulating the biological function of HCC. RESULTS Compared with those in the control group, the cell proliferation and clone formation were significantly reduced, cell cycle was arrested in G2/M phase, the number of apoptotic cells was remarkably increased, and the abilities of vascular formation and cell migration and metastasis were dramatically weakened in the shUBAP2L group (All P<0.05). UBAP2L knockdown significantly suppressed the tumor growth of HCC in vivo. Moreover, a total of 320 genes changed significantly after UBAP2L knockdown, among which, 159 genes were upregulated and 161 genes were downregulated. Then, gene enrichment analysis revealed that PI3K/AKT and P53 signal pathway were the most significant in the top 10 enrichments. Finally, Western blot analysis verified that UBAP2L knockdown caused the increase of P21 and PTEN and decrease of CDK1, CCNB1, p-PI3K, and p-AKT. CONCLUSIONS UBAP2L plays an oncogenic role in HCC, and knockdown of its expression significantly inhibits HCC growth and metastasis, which may be related to the regulation of PI3K/AKT and P53 signaling pathways by UBAP2L.
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Affiliation(s)
- Qian Li
- Department of Pathology, First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui, China (mainland).,The Provincial Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Wei Wang
- Department of Medical Oncology, First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui, China (mainland)
| | - Yu-Chen Hu
- Department of Pathology, First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui, China (mainland).,The Provincial Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Tian-Tian Yin
- Department of Pathology, First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui, China (mainland).,The Provincial Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Jie He
- Department of Pathology, First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui, China (mainland)
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20
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He J, Chen Y, Cai L, Li Z, Guo X. UBAP2L silencing inhibits cell proliferation and G2/M phase transition in breast cancer. Breast Cancer 2017; 25:224-232. [PMID: 29196913 PMCID: PMC5818569 DOI: 10.1007/s12282-017-0820-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 11/15/2017] [Indexed: 12/21/2022]
Abstract
Background Ubiquitin-associated protein 2-like (UBAP2L) contains a ubiquitin-associated domain near its N-terminus, which has been demonstrated to be overexpressed in multiple tumors, including hepatocellular carcinoma and colorectal carcinoma but its role has not been well studied in breast cancer. Thus, this study was designed to evaluate whether UBAP2L can serve as a potential molecular target for breast cancer therapy. Methods The expression of UBAP2L was determined in breast cancer tissues and cell lines by Western blotting and Oncomine database mining. Then the expression of UBAP2L was silenced using RNA interference and the effects of UBAP2L knockdown on breast cancer cell proliferation and cell cycle progression by MTT and colony formation assay, and Flow cytometry, respectively. Results We found the expression of UBAP2L was significantly up-regulated in breast cancer tissues and cell lines. Knockdown of UBAP2L suppressed cell proliferation, impaired colony formation ability and induced cell cycle arrest at G2/M phase. At molecular levels, knockdown of UBAP2L increased p21 expression, but decreased the expression of CDK1 and Cyclin B1 in breast cancer cells. Conclusion Our findings suggest that UBAP2L plays an important role in breast cancer cell proliferation and might serve as a potential target for breast cancer treatment.
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Affiliation(s)
- Jing He
- Department of Oncology, The Affiliated Ganzhou Hospital of Nanchang University, No. 17 Hongqi Avenue, Ganzhou, 341000, Jiangxi, China
| | - Yuanping Chen
- Department of Oncology, The Affiliated Ganzhou Hospital of Nanchang University, No. 17 Hongqi Avenue, Ganzhou, 341000, Jiangxi, China
| | - Lu Cai
- Department of Oncology, The Affiliated Ganzhou Hospital of Nanchang University, No. 17 Hongqi Avenue, Ganzhou, 341000, Jiangxi, China
| | - Zelei Li
- Department of Oncology, The Affiliated Ganzhou Hospital of Nanchang University, No. 17 Hongqi Avenue, Ganzhou, 341000, Jiangxi, China
| | - Xiaoqing Guo
- Department of Oncology, The Affiliated Ganzhou Hospital of Nanchang University, No. 17 Hongqi Avenue, Ganzhou, 341000, Jiangxi, China.
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21
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Aucagne R, Girard S, Mayotte N, Lehnertz B, Lopes-Paciencia S, Gendron P, Boucher G, Chagraoui J, Sauvageau G. UBAP2L is amplified in a large subset of human lung adenocarcinoma and is critical for epithelial lung cell identity and tumor metastasis. FASEB J 2017; 31:5012-5018. [PMID: 28754713 DOI: 10.1096/fj.201601219rrr] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 07/17/2017] [Indexed: 02/03/2023]
Abstract
The ubiquitin-associated protein 2-like (UBAP2L) gene remains poorly studied in human and mouse development. UBAP2L interacts with the Polycomb group protein B lymphoma Mo-MLV insertion region 1 homolog (BMI1) and determines the activity of mouse hematopoietic stem cells in vivo Here we show that loss of Ubap2l leads to disorganized respiratory epithelium of mutant neonates, which die of respiratory failure. We also show that UBAP2L overexpression leads to epithelial-mesenchymal transition-like phenotype in a non-small cell lung carcinoma (NSCLC) cell line. UBAP2L is amplified in 15% of human primary lung adenocarcinoma specimens. Such patients express higher levels of UBAP2L and show a reduction in survival when compared with those who do not have this gene amplification. Supporting a possible role for UBAP2L in lung tumor progression, NSCLC cells engineered to express low levels of this gene produce much smaller tumors in vivo than wild-type control cells. Together, these results suggest that UBAP2L contributes to epithelial lung cell identity in mice and that it plays an important role in human lung adenocarcinoma.-Aucagne, R., Girard, S., Mayotte, N., Lehnertz, B., Lopes-Paciencia, S., Gendron, P., Boucher, G., Chagraoui, J., Sauvageau, G. UBAP2L is amplified in a large subset of human lung adenocarcinoma and is critical for epithelial lung cell identity and tumor metastasis.
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Affiliation(s)
- Romain Aucagne
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada
| | - Simon Girard
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada
| | - Nadine Mayotte
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada
| | - Bernhard Lehnertz
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada
| | - Stéphane Lopes-Paciencia
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada
| | - Patrick Gendron
- Bioinformatics Platform, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Québec, Canada
| | - Geneviève Boucher
- Bioinformatics Platform, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Québec, Canada
| | - Jalila Chagraoui
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada
| | - Guy Sauvageau
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada; .,Department of Medicine, Université de Montréal, Montreal, Québec, Canada; and.,Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, Québec, Canada
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22
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Jackson JT, Shields BJ, Shi W, Di Rago L, Metcalf D, Nicola NA, McCormack MP. Hhex Regulates Hematopoietic Stem Cell Self-Renewal and Stress Hematopoiesis via Repression of Cdkn2a. Stem Cells 2017; 35:1948-1957. [PMID: 28577303 DOI: 10.1002/stem.2648] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 04/20/2017] [Accepted: 05/12/2017] [Indexed: 12/28/2022]
Abstract
The hematopoietically expressed homeobox transcription factor (Hhex) is important for the maturation of definitive hematopoietic progenitors and B-cells during development. We have recently shown that in adult hematopoiesis, Hhex is dispensable for maintenance of hematopoietic stem cells (HSCs) and myeloid lineages but essential for the commitment of common lymphoid progenitors (CLPs) to lymphoid lineages. Here, we show that during serial bone marrow transplantation, Hhex-deleted HSCs are progressively lost, revealing an intrinsic defect in HSC self-renewal. Moreover, Hhex-deleted mice show markedly impaired hematopoietic recovery following myeloablation, due to a failure of progenitor expansion. In vitro, Hhex-null blast colonies were incapable of replating, implying a specific requirement for Hhex in immature progenitors. Transcriptome analysis of Hhex-null Lin- Sca+ Kit+ cells showed that Hhex deletion leads to derepression of polycomb repressive complex 2 (PRC2) and PRC1 target genes, including the Cdkn2a locus encoding the tumor suppressors p16Ink 4a and p19Arf . Indeed, loss of Cdkn2a restored the capacity of Hhex-null blast colonies to generate myeloid progenitors in vitro, as well as hematopoietic reconstitution following myeloablation in vivo. Thus, HSCs require Hhex to promote PRC2-mediated Cdkn2a repression to enable continued self-renewal and response to hematopoietic stress. Stem Cells 2017;35:1948-1957.
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Affiliation(s)
- Jacob T Jackson
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Australian Centre for Blood Diseases, Monash University, Melbourne, Australia
| | - Benjamin J Shields
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Australian Centre for Blood Diseases, Monash University, Melbourne, Australia.,Departments of Medical Biology
| | - Wei Shi
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Computing and Information Systems, The University of Melbourne, Parkville, Victoria, Australia
| | - Ladina Di Rago
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
| | - Donald Metcalf
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Departments of Medical Biology
| | - Nicos A Nicola
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Departments of Medical Biology
| | - Matthew P McCormack
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Australian Centre for Blood Diseases, Monash University, Melbourne, Australia.,Departments of Medical Biology
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23
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Craft AM, Johnson M. From stem cells to human development: a distinctly human perspective on early embryology, cellular differentiation and translational research. Development 2017; 144:12-16. [DOI: 10.1242/dev.142778] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Over 100 scientists with common interests in human development, disease and regeneration gathered in late September 2016 for The Company of Biologists' second ‘From Stem Cells to Human Development’ meeting held in historic Southbridge. In this Meeting Review, we highlight some of the exciting new findings that were presented, and discuss emerging themes and convergences in human development and disease that arose during these discussions.
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Affiliation(s)
- April M. Craft
- Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Matthew Johnson
- Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA
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24
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Lund PJ, Elias JE, Davis MM. Global Analysis of O-GlcNAc Glycoproteins in Activated Human T Cells. THE JOURNAL OF IMMUNOLOGY 2016; 197:3086-3098. [PMID: 27655845 DOI: 10.4049/jimmunol.1502031] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 07/22/2016] [Indexed: 12/21/2022]
Abstract
T cell activation in response to Ag is largely regulated by protein posttranslational modifications. Although phosphorylation has been extensively characterized in T cells, much less is known about the glycosylation of serine/threonine residues by O-linked N-acetylglucosamine (O-GlcNAc). Given that O-GlcNAc appears to regulate cell signaling pathways and protein activity similarly to phosphorylation, we performed a comprehensive analysis of O-GlcNAc during T cell activation to address the functional importance of this modification and to identify the modified proteins. Activation of T cells through the TCR resulted in a global elevation of O-GlcNAc levels and in the absence of O-GlcNAc, IL-2 production and proliferation were compromised. T cell activation also led to changes in the relative expression of O-GlcNAc transferase (OGT) isoforms and accumulation of OGT at the immunological synapse of murine T cells. Using a glycoproteomics approach, we identified >200 O-GlcNAc proteins in human T cells. Many of the identified proteins had a functional relationship to RNA metabolism, and consistent with a connection between O-GlcNAc and RNA, inhibition of OGT impaired nascent RNA synthesis upon T cell activation. Overall, our studies provide a global analysis of O-GlcNAc dynamics during T cell activation and the first characterization, to our knowledge, of the O-GlcNAc glycoproteome in human T cells.
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Affiliation(s)
- Peder J Lund
- Interdepartmental Program in Immunology, Stanford University, Stanford, CA 94305.,Department of Microbiology and Immunology, Stanford University, Stanford, CA 94305
| | - Joshua E Elias
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA 94305
| | - Mark M Davis
- Department of Microbiology and Immunology, Stanford University, Stanford, CA 94305; .,Stanford Institute for Immunity, Transplantation, and Infection, Stanford University, Stanford, CA 94305; and.,Howard Hughes Medical Institute, Stanford University, Stanford, CA 94305
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25
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BMI1-UBR5 axis regulates transcriptional repression at damaged chromatin. Proc Natl Acad Sci U S A 2016; 113:11243-11248. [PMID: 27647897 DOI: 10.1073/pnas.1610735113] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
BMI1 is a component of the Polycomb Repressive Complex 1 (PRC1), which plays a key role in maintaining epigenetic silencing during development. BMI1 also participates in gene silencing during DNA damage response, but the precise downstream function of BMI1 in gene silencing is unclear. Here we identified the UBR5 E3 ligase as a downstream factor of BMI1. We found that UBR5 forms damage-inducible nuclear foci in a manner dependent on the PRC1 components BMI1, RNF1 (RING1a), and RNF2 (RING1b). Whereas transcription is repressed at UV-induced lesions on chromatin, depletion of the PRC1 members or UBR5 alone derepressed transcription elongation at these sites, suggesting that UBR5 functions in a linear pathway with PRC1 in inducing gene silencing at lesions. Mass spectrometry (MS) analysis revealed that UBR5 associates with BMI1 as well as FACT components SPT16 and SSRP1. We found that UBR5 localizes to the UV-induced lesions along with SPT16. We show that UBR5 ubiquitinates SPT16, and depletion of UBR5 or BMI1 leads to an enlargement of SPT16 foci size at UV lesions, suggesting that UBR5 and BMI1 repress SPT16 enrichment at the damaged sites. Consistently, depletion of the FACT components effectively reversed the transcriptional derepression incurred in the UBR5 and BMI1 KO cells. Finally, UBR5 and BMI1 KO cells are hypersensitive to UV, which supports the notion that faulty RNA synthesis at damaged sites is harmful to the cell fitness. Altogether, these results suggest that BMI1 and UBR5 repress the polymerase II (Pol II)-mediated transcription at damaged sites, by negatively regulating the FACT-dependent Pol II elongation.
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26
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The roles of Polycomb group proteins in hematopoietic stem cells and hematological malignancies. Int J Hematol 2016; 103:634-42. [PMID: 27086351 DOI: 10.1007/s12185-016-2011-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 04/07/2016] [Accepted: 04/07/2016] [Indexed: 12/19/2022]
Abstract
Polycomb group (PcG) proteins are epigenetic regulatory factors that maintain the repression of target gene expression through histone modification. PcG proteins control the repression of genes that regulate differentiation and the cell cycle in the maintenance of hematopoietic stem cells (HSC). Moreover, abnormalities in expression level and mutations in PcG genes have been reported in various types of cancer, including hematological malignancies. In this review, we present an overview of the roles of PcG proteins in HSC and various types of hematological malignancies.
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27
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Shu LP, Zhou ZW, Zhou T, Deng M, Dong M, Chen Y, Fu YF, Jin Y, Zhou SF, He ZX. Ectopic expression of Hoxb4a in hemangioblasts promotes hematopoietic development in early embryogenesis of zebrafish. Clin Exp Pharmacol Physiol 2016; 42:1275-86. [PMID: 26743678 DOI: 10.1111/1440-1681.12483] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 08/15/2015] [Accepted: 08/24/2015] [Indexed: 12/12/2022]
Abstract
Hemangioblast, including primitive hematopoietic progenitor cells, play an important role in hematopoietic development, however, the underlying mechanism for the propagation of hematopoietic progenitor cells remains elusive. A variety of regulatory molecules activated in early embryonic development play a critical role in the maintenance of function of hematopoietic progenitor cells. Homeobox transcription factors are an important class of early embryonic developmental regulators determining hematopoietic development. However, the effect of homeobox protein Hox-B4 (HOXB4) ectopic expression on the development of hemangioblasts has not been fully addressed. This study aimed to investigate the role of Hoxb4a, an ortholog gene of HOXB4 in zebrafish, in the hematopoietic development in zebrafish. A transgenic zebrafish line was established with Cre-loxP system that stably overexpressed enhanced green fluorescent protein (EGFP)-tagged Hoxb4a protein under the control of hemangioblast-specific lmo2 promoter. Overexpression of Hoxb4a in the development of hemangioblasts resulted in a considerable increase in the number of stem cell leukemia (scl) and lmo2-positive primitive hematopoietic progenitor cells occurring in the posterior intermediate cell mass (ICM). Interestingly, Hoxb4a overexpression also disrupted the development of myelomonocytes in the anterior yolk sac and the posterior ICM, without affecting erythropoiesis in the posterior ICM. Taken together, these results indicate that Hoxb4a favours the development of hematopoietic progenitor cells originated from hemangioblasts in vivo.
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Affiliation(s)
- Li-Ping Shu
- Guizhou Provincial Key Laboratory for Regenerative Medicine, Stem Cell and Tissue Engineering Research Centre & Sino-US Joint Laboratory for Medical Sciences, Laboratory Animal Centre, Guiyang Medical University, Guiyang, China
| | - Zhi-Wei Zhou
- Laboratory of Development and Diseases and Key Laboratory of Stem Cell Biology and State Key Laboratory for Medical Genomics, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine and Shanghai Institute of Hematology (SIH), Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ting Zhou
- Laboratory of Development and Diseases and Key Laboratory of Stem Cell Biology and State Key Laboratory for Medical Genomics, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine and Shanghai Institute of Hematology (SIH), Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Min Deng
- Laboratory of Development and Diseases and Key Laboratory of Stem Cell Biology and State Key Laboratory for Medical Genomics, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine and Shanghai Institute of Hematology (SIH), Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Mei Dong
- Laboratory of Development and Diseases and Key Laboratory of Stem Cell Biology and State Key Laboratory for Medical Genomics, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine and Shanghai Institute of Hematology (SIH), Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yi Chen
- Laboratory of Development and Diseases and Key Laboratory of Stem Cell Biology and State Key Laboratory for Medical Genomics, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine and Shanghai Institute of Hematology (SIH), Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yan-Fang Fu
- Laboratory of Development and Diseases and Key Laboratory of Stem Cell Biology and State Key Laboratory for Medical Genomics, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine and Shanghai Institute of Hematology (SIH), Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yi Jin
- Laboratory of Development and Diseases and Key Laboratory of Stem Cell Biology and State Key Laboratory for Medical Genomics, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine and Shanghai Institute of Hematology (SIH), Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Shu-Feng Zhou
- Guizhou Provincial Key Laboratory for Regenerative Medicine, Stem Cell and Tissue Engineering Research Centre & Sino-US Joint Laboratory for Medical Sciences, Laboratory Animal Centre, Guiyang Medical University, Guiyang, China.,Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Zhi-Xu He
- Guizhou Provincial Key Laboratory for Regenerative Medicine, Stem Cell and Tissue Engineering Research Centre & Sino-US Joint Laboratory for Medical Sciences, Laboratory Animal Centre, Guiyang Medical University, Guiyang, China
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28
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Maeda M, Hasegawa H, Sugiyama M, Hyodo T, Ito S, Chen D, Asano E, Masuda A, Hasegawa Y, Hamaguchi M, Senga T. Arginine methylation of ubiquitin-associated protein 2-like is required for the accurate distribution of chromosomes. FASEB J 2015; 30:312-23. [PMID: 26381755 DOI: 10.1096/fj.14-268987] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 09/08/2015] [Indexed: 01/01/2023]
Abstract
Proper bioriented attachment of microtubules and kinetochores is essential for the precise distribution of duplicated chromosomes to each daughter cell. An aberrant kinetochore-microtubule attachment results in chromosome instability, which leads to cellular transformation or apoptosis. In this article, we show that ubiquitin-associated protein 2-like (UBAP2L) is necessary for correct kinetochore-microtubule attachment. Depletion of UBAP2L inhibited chromosome alignment in metaphase and delayed progression to anaphase by activating spindle assembly checkpoint signaling. In addition, UBAP2L knockdown increased side-on attachment of kinetochores along the microtubules and suppressed stable kinetochore fiber formation. A proteomics analysis identified protein arginine methyltransferase (PRMT)1 as a direct interaction partner of UBAP2L. UBAP2L has an arginine- and glycine-rich motif called the RGG/RG or GAR motif in the N terminus. Biochemical analysis confirmed that arginine residues in the RGG/RG motif of UBAP2L were directly methylated by PRMT1. Finally, we demonstrated that the RGG/RG motif of UBAP2L is essential for the proper alignment of chromosomes in metaphase for the accurate distribution of chromosomes. Our results show a possible role for arginine methylation in UBAP2L for the progression of mitosis.
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Affiliation(s)
- Masao Maeda
- *Division of Cancer Biology, Division of Neurogenetics, and Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hitoki Hasegawa
- *Division of Cancer Biology, Division of Neurogenetics, and Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mai Sugiyama
- *Division of Cancer Biology, Division of Neurogenetics, and Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Toshinori Hyodo
- *Division of Cancer Biology, Division of Neurogenetics, and Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Satoko Ito
- *Division of Cancer Biology, Division of Neurogenetics, and Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Dan Chen
- *Division of Cancer Biology, Division of Neurogenetics, and Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Eri Asano
- *Division of Cancer Biology, Division of Neurogenetics, and Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Akio Masuda
- *Division of Cancer Biology, Division of Neurogenetics, and Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoshinori Hasegawa
- *Division of Cancer Biology, Division of Neurogenetics, and Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Michinari Hamaguchi
- *Division of Cancer Biology, Division of Neurogenetics, and Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takeshi Senga
- *Division of Cancer Biology, Division of Neurogenetics, and Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
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