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Gárate-Rascón M, Recalde M, Rojo C, Fernández-Barrena MG, Ávila MA, Arechederra M, Berasain C. SLU7: A New Hub of Gene Expression Regulation—From Epigenetics to Protein Stability in Health and Disease. Int J Mol Sci 2022; 23:ijms232113411. [PMID: 36362191 PMCID: PMC9658179 DOI: 10.3390/ijms232113411] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/28/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022] Open
Abstract
SLU7 (Splicing factor synergistic lethal with U5 snRNA 7) was first identified as a splicing factor necessary for the correct selection of 3′ splice sites, strongly impacting on the diversity of gene transcripts in a cell. More recent studies have uncovered new and non-redundant roles of SLU7 as an integrative hub of different levels of gene expression regulation, including epigenetic DNA remodeling, modulation of transcription and protein stability. Here we review those findings, the multiple factors and mechanisms implicated as well as the cellular functions affected. For instance, SLU7 is essential to secure liver differentiation, genome integrity acting at different levels and a correct cell cycle progression. Accordingly, the aberrant expression of SLU7 could be associated with human diseases including cancer, although strikingly, it is an essential survival factor for cancer cells. Finally, we discuss the implications of SLU7 in pathophysiology, with particular emphasis on the progression of liver disease and its possible role as a therapeutic target in human cancer.
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Affiliation(s)
- María Gárate-Rascón
- Program of Hepatology, Center for Applied Medical Research (CIMA), University of Navarra, Avda. Pio XII, n55, 31008 Pamplona, Spain
| | - Miriam Recalde
- Program of Hepatology, Center for Applied Medical Research (CIMA), University of Navarra, Avda. Pio XII, n55, 31008 Pamplona, Spain
| | - Carla Rojo
- Program of Hepatology, Center for Applied Medical Research (CIMA), University of Navarra, Avda. Pio XII, n55, 31008 Pamplona, Spain
| | - Maite G. Fernández-Barrena
- Program of Hepatology, Center for Applied Medical Research (CIMA), University of Navarra, Avda. Pio XII, n55, 31008 Pamplona, Spain
- IdiSNA, Navarra Institute for Health Research, 31008 Pamplona, Spain
- National Institute for the Study of Liver and Gastrointestinal Diseases (CIBERehd, Carlos III Health Institute), 28029 Madrid, Spain
| | - Matías A. Ávila
- Program of Hepatology, Center for Applied Medical Research (CIMA), University of Navarra, Avda. Pio XII, n55, 31008 Pamplona, Spain
- IdiSNA, Navarra Institute for Health Research, 31008 Pamplona, Spain
- National Institute for the Study of Liver and Gastrointestinal Diseases (CIBERehd, Carlos III Health Institute), 28029 Madrid, Spain
| | - María Arechederra
- Program of Hepatology, Center for Applied Medical Research (CIMA), University of Navarra, Avda. Pio XII, n55, 31008 Pamplona, Spain
- IdiSNA, Navarra Institute for Health Research, 31008 Pamplona, Spain
- National Institute for the Study of Liver and Gastrointestinal Diseases (CIBERehd, Carlos III Health Institute), 28029 Madrid, Spain
| | - Carmen Berasain
- Program of Hepatology, Center for Applied Medical Research (CIMA), University of Navarra, Avda. Pio XII, n55, 31008 Pamplona, Spain
- IdiSNA, Navarra Institute for Health Research, 31008 Pamplona, Spain
- National Institute for the Study of Liver and Gastrointestinal Diseases (CIBERehd, Carlos III Health Institute), 28029 Madrid, Spain
- Correspondence: ; Tel.: +34-948-194700; Fax: +34-948-194717
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Aceituno-Valenzuela U, Micol-Ponce R, Ponce MR. Genome-wide analysis of CCHC-type zinc finger (ZCCHC) proteins in yeast, Arabidopsis, and humans. Cell Mol Life Sci 2020; 77:3991-4014. [PMID: 32303790 PMCID: PMC11105112 DOI: 10.1007/s00018-020-03518-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 03/06/2020] [Accepted: 03/30/2020] [Indexed: 12/22/2022]
Abstract
The diverse eukaryotic proteins that contain zinc fingers participate in many aspects of nucleic acid metabolism, from DNA transcription to RNA degradation, post-transcriptional gene silencing, and small RNA biogenesis. These proteins can be classified into at least 30 types based on structure. In this review, we focus on the CCHC-type zinc fingers (ZCCHC), which contain an 18-residue domain with the CX2CX4HX4C sequence, where C is cysteine, H is histidine, and X is any amino acid. This motif, also named the "zinc knuckle", is characteristic of the retroviral Group Antigen protein and occurs alone or with other motifs. Many proteins containing zinc knuckles have been identified in eukaryotes, but only a few have been studied. Here, we review the available information on ZCCHC-containing factors from three evolutionarily distant eukaryotes-Saccharomyces cerevisiae, Arabidopsis thaliana, and Homo sapiens-representing fungi, plants, and metazoans, respectively. We performed systematic searches for proteins containing the CX2CX4HX4C sequence in organism-specific and generalist databases. Next, we analyzed the structural and functional information for all such proteins stored in UniProtKB. Excluding retrotransposon-encoded proteins and proteins harboring uncertain ZCCHC motifs, we found seven ZCCHC-containing proteins in yeast, 69 in Arabidopsis, and 34 in humans. ZCCHC-containing proteins mainly localize to the nucleus, but some are nuclear and cytoplasmic, or exclusively cytoplasmic, and one localizes to the chloroplast. Most of these factors participate in RNA metabolism, including transcriptional elongation, polyadenylation, translation, pre-messenger RNA splicing, RNA export, RNA degradation, microRNA and ribosomal RNA biogenesis, and post-transcriptional gene silencing. Several human ZCCHC-containing factors are derived from neofunctionalized retrotransposons and act as proto-oncogenes in diverse neoplastic processes. The conservation of ZCCHCs in orthologs of these three phylogenetically distant eukaryotes suggests that these domains have biologically relevant functions that are not well known at present.
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Affiliation(s)
- Uri Aceituno-Valenzuela
- Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, 03202, Elche, Spain
| | - Rosa Micol-Ponce
- Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, 03202, Elche, Spain
| | - María Rosa Ponce
- Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, 03202, Elche, Spain.
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Wang J, Kainrad N, Shen H, Zhou Z, Rote P, Zhang Y, Nagy LE, Wu J, You M. Hepatic Knockdown of Splicing Regulator Slu7 Ameliorates Inflammation and Attenuates Liver Injury in Ethanol-Fed Mice. THE AMERICAN JOURNAL OF PATHOLOGY 2018; 188:1807-1819. [PMID: 29870742 DOI: 10.1016/j.ajpath.2018.05.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 04/16/2018] [Accepted: 05/03/2018] [Indexed: 12/11/2022]
Abstract
Aberrant precursor mRNA splicing plays a pivotal role in liver diseases. However, roles of splicing regulators in alcoholic liver disease are unknown. Herein, we investigated a splicing regulator, Slu7, in the development of alcoholic steatohepatitis. Adenovirus-mediated alteration of hepatic Slu7 expression in mice pair fed either with or without (as control) ethanol in their diet was used. Knockdown of hepatic Slu7 by adenovirus-Slu7shRNA treatment ameliorated inflammation and attenuated liver injury in mice after ethanol administration. Mechanistically, reducing liver Slu7 expression increased the expression of sirtuin 1 (SIRT1) full-length and repressed the splicing of SIRT1 into SIRT1-ΔExon8 isoform in ethanol-fed mice. Knockdown of hepatic Slu7 in the ethanol-fed mice also ameliorated splicing of lipin-1 and serine/arginine-rich splicing factor 3 (Srsf3). In concordance with ameliorated splicing of SIRT1, lipin-1, and Srsf3, knockdown of hepatic Slu7 inhibited the activity of NF-κB, normalized iron and zinc homeostasis, reduced oxidative stress, and attenuated liver damage in ethanol-fed mice. In addition, hepatic Slu7 was significantly elevated in patients with alcoholic steatohepatitis. Our present study illustrates a novel role of Slu7 in alcoholic liver injury and suggests that dysregulated Slu7 may contribute to the pathogenesis of human alcoholic steatohepatitis.
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Affiliation(s)
- Jiayou Wang
- Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, Ohio; Department of Anatomy, School of Fundamental Medical Science, Guangzhou University of Chinese Medicine, Guangzhou, People's Republic of China
| | - Noah Kainrad
- Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, Ohio
| | - Hong Shen
- Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, Ohio; Department of Liver Diseases, Guangdong Hospital of Traditional Chinese Medicine in Zhuhai, Zhuhai, People's Republic of China
| | - Zhou Zhou
- Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, Ohio
| | - Paula Rote
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, Ohio
| | - Yanqiao Zhang
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, Ohio
| | - Laura E Nagy
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Jiashin Wu
- Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, Ohio
| | - Min You
- Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, Ohio.
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Splicing functions and global dependency on fission yeast slu7 reveal diversity in spliceosome assembly. Mol Cell Biol 2013; 33:3125-36. [PMID: 23754748 DOI: 10.1128/mcb.00007-13] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The multiple short introns in Schizosaccharomyces pombe genes with degenerate cis sequences and atypically positioned polypyrimidine tracts make an interesting model to investigate canonical and alternative roles for conserved splicing factors. Here we report functions and interactions of the S. pombe slu7(+) (spslu7(+)) gene product, known from Saccharomyces cerevisiae and human in vitro reactions to assemble into spliceosomes after the first catalytic reaction and to dictate 3' splice site choice during the second reaction. By using a missense mutant of this essential S. pombe factor, we detected a range of global splicing derangements that were validated in assays for the splicing status of diverse candidate introns. We ascribe widespread, intron-specific SpSlu7 functions and have deduced several features, including the branch nucleotide-to-3' splice site distance, intron length, and the impact of its A/U content at the 5' end on the intron's dependence on SpSlu7. The data imply dynamic substrate-splicing factor relationships in multiintron transcripts. Interestingly, the unexpected early splicing arrest in spslu7-2 revealed a role before catalysis. We detected a salt-stable association with U5 snRNP and observed genetic interactions with spprp1(+), a homolog of human U5-102k factor. These observations together point to an altered recruitment and dependence on SpSlu7, suggesting its role in facilitating transitions that promote catalysis, and highlight the diversity in spliceosome assembly.
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Kumar KRR, Kirti PB. Novel role for a serine/arginine-rich splicing factor, AdRSZ21 in plant defense and HR-like cell death. PLANT MOLECULAR BIOLOGY 2012; 80:461-76. [PMID: 22941522 DOI: 10.1007/s11103-012-9960-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 08/23/2012] [Indexed: 05/10/2023]
Abstract
A splicing factor gene belonging to the serine/arginine (SR)-rich protein family was cloned from Arachis diogoi, a wild relative of peanut in a study on differential gene expression and was designated as AdRSZ21. AdRSZ21 exhibits a RNA recognition motif (RRM), a CCHC type zinc finger domain (Zinc Knuckle, ZnK) and a C-terminal RS domain that is rich in arginine and serine. Multiple sequence alignment of AdRSZ21 with putative orthologs from diverse taxa including lower plants and monocots showed that the RRM and ZnK domains are evolutionarily conserved. Phylogenetic studies revealed that AdRSZ21 belongs to the RSZ subfamily and is closely related to the Arabidopsis ortholog AtRSZ22. Transient constitutive and conditional heterologous expression of AdRSZ21 resulted in HR-like cell death in tobacco leaves. The presence of a functional RRM domain, but not ZnK domain was essential for AdRSZ21 induced HR-like cell death phenotype. On the other hand, expression of AdRSZ21 with mutated ZnK domain lead to accelerated cell death. The cell death induced by AdRSZ21 was found to be associated with specific upregulation of patatin-like protein gene and other defense related gene transcripts suggesting a role for AdRSZ21 in plant defense and HR-like cell death.
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Singh PK, Kanodia S, Dandin CJ, Vijayraghavan U, Malhotra P. Plasmodium falciparum Prp16 homologue and its role in splicing. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2012; 1819:1186-99. [PMID: 22982196 DOI: 10.1016/j.bbagrm.2012.08.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 08/29/2012] [Accepted: 08/30/2012] [Indexed: 01/25/2023]
Abstract
Large numbers of Plasmodium genes have been predicted to have introns. However, little information exists on the splicing mechanisms in this organism. Here, we describe the DExD/DExH-box containing Pre-mRNA processing proteins (Prps), PfPrp2p, PfPrp5p, PfPrp16p, PfPrp22p, PfPrp28p, PfPrp43p and PfBrr2p, present in the Plasmodium falciparum genome and characterized the role of one of these factors, PfPrp16p. It is a member of DEAH-box protein family with nine collinear sequence motifs, a characteristic of helicase proteins. Experiments with the recombinantly expressed and purified PfPrp16 helicase domain revealed binding to RNA, hydrolysis of ATP as well as catalytic helicase activities. Expression of helicase domain with the C-terminal helicase-associated domain (HA2) reduced these activities considerably, indicating that the helicase-associated domain may regulate the PfPrp16 function. Localization studies with the PfPrp16 GFP transgenic lines suggested a role of its N-terminal domain (1-80 amino acids) in nuclear targeting. Immunodepletion of PfPrp16p, from nuclear extracts of parasite cultures, blocked the second catalytic step of an in vitro constituted splicing reaction suggesting a role for PfPrp16p in splicing catalysis. Further we show by complementation assay in yeast that a chimeric yeast-Plasmodium Prp16 protein, not the full length PfPrp16, can rescue the yeast prp16 temperature-sensitive mutant. These results suggest that although the role of Prp16p in catalytic step II is highly conserved among Plasmodium, human and yeast, subtle differences exist with regards to its associated factors or its assembly with spliceosomes.
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Affiliation(s)
- Prashant Kumar Singh
- International Centre for Genetic Engineering and Biotechnology, New Delhi, India
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Rausin G, Tillemans V, Stankovic N, Hanikenne M, Motte P. Dynamic nucleocytoplasmic shuttling of an Arabidopsis SR splicing factor: role of the RNA-binding domains. PLANT PHYSIOLOGY 2010; 153:273-84. [PMID: 20237019 PMCID: PMC2862426 DOI: 10.1104/pp.110.154740] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Accepted: 03/11/2010] [Indexed: 05/22/2023]
Abstract
Serine/arginine-rich (SR) proteins are essential nuclear-localized splicing factors. We have investigated the dynamic subcellular distribution of the Arabidopsis (Arabidopsis thaliana) RSZp22 protein, a homolog of the human 9G8 SR factor. Little is known about the determinants underlying the control of plant SR protein dynamics, and so far most studies relied on ectopic transient overexpression. Here, we provide a detailed analysis of the RSZp22 expression profile and describe its nucleocytoplasmic shuttling properties in specific cell types. Comparison of transient ectopic- and stable tissue-specific expression highlights the advantages of both approaches for nuclear protein dynamic studies. By site-directed mutagenesis of RSZp22 RNA-binding sequences, we show that functional RNA recognition motif RNP1 and zinc-knuckle are dispensable for the exclusive protein nuclear localization and speckle-like distribution. Fluorescence resonance energy transfer imaging also revealed that these motifs are implicated in RSZp22 molecular interactions. Furthermore, the RNA-binding motif mutants are defective for their export through the CRM1/XPO1/Exportin-1 receptor pathway but retain nucleocytoplasmic mobility. Moreover, our data suggest that CRM1 is a putative export receptor for mRNPs in plants.
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Alberstein M, Amit M, Vaknin K, O'Donnell A, Farhy C, Lerenthal Y, Shomron N, Shaham O, Sharrocks AD, Ashery-Padan R, Ast G. Regulation of transcription of the RNA splicing factor hSlu7 by Elk-1 and Sp1 affects alternative splicing. RNA (NEW YORK, N.Y.) 2007; 13:1988-99. [PMID: 17804646 PMCID: PMC2040095 DOI: 10.1261/rna.492907] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Alternative splicing plays a major role in transcriptome diversity and plasticity, but it is largely unknown how tissue-specific and embryogenesis-specific alternative splicing is regulated. The highly conserved splicing factor Slu7 is involved in 3' splice site selection and also regulates alternative splicing. We show that Slu7 has a unique spatial pattern of expression among human and mouse embryonic and adult tissues. We identified several functional Ets binding sites and GC-boxes in the human Slu7 (hSlu7) promoter region. The Ets and GC-box binding transcription factors, Elk-1 and Sp1, respectively, exerted opposite effects on hSlu7 transcription: Sp1 protein enhances and Elk-1 protein represses transcription in a dose-dependent manner. Sp1 protein bound to the hSlu7 promoter in vivo, and depletion of Sp1 by RNA interference (RNAi) repressed hSlu7 expression. Elk-1 protein bound to the hSlu7 promoter in vivo, and depletion of Elk-1 by RNAi caused an increase in the endogenous level of hSlu7 mRNA. Further, depletion of either Sp1 or Elk-1 affected alternative splicing. Our results provide indications of a complex transcription regulation mechanism that controls the spatial and temporal expression of Slu7, presumably allowing regulation of tissue-specific alternative splicing events.
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Affiliation(s)
- Moti Alberstein
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
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Pugh DJR, AB E, Faro A, Lutya PT, Hoffmann E, Rees DJG. DWNN, a novel ubiquitin-like domain, implicates RBBP6 in mRNA processing and ubiquitin-like pathways. BMC STRUCTURAL BIOLOGY 2006; 6:1. [PMID: 16396680 PMCID: PMC1360078 DOI: 10.1186/1472-6807-6-1] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2005] [Accepted: 01/05/2006] [Indexed: 02/02/2023]
Abstract
Background RBBP6 is a 250 kDa splicing-associated protein that has been identified as an E3 ligase due to the presence of a RING finger domain. In humans and mice it interacts with both p53 and Rb, and plays a role in the induction of apoptosis and regulation of the cell cycle. RBBP6 has recently been shown to be highly up-regulated in oesophageal cancer, and to be a promising target for immunotherapy against the disease. Results We show here using heteronuclear NMR that the N-terminal 81 amino acids of RBBP6 constitute a novel ubiquitin-like domain, which we have called the DWNN domain. The domain lacks conserved equivalents of K48 and K63, although the equivalents of K6 and K29 are highly, although not absolutely, conserved. The di-glycine motif that is characteristic of proteins involved in ubiquitination is found in the human and mouse form of the domain, although it is not present in all organisms. It forms part of a three-domain form of RBBP6 containing the DWNN domain, a zinc knuckle and a RING finger domain, which is found in all eukaryotic genomes so far examined, in the majority of cases at single copy number. The domain is also independently expressed in vertebrates as a single domain protein. Conclusion DWNN is a novel ubiquitin-like domain found only at the N-terminus of the RBBP6 family of splicing-associated proteins. The ubiquitin-like structure of the domain greatly increases the likelihood that RBBP6 functions through some form of ubiquitin-like modification. Furthermore, the fact that the DWNN domain is independently expressed in higher vertebrates leads us to propose that the domain may itself function as a novel ubiquitin-like modifier of other proteins.
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Affiliation(s)
- David JR Pugh
- Biotechnology Department, University of the Western Cape, Modderdam Road, Bellville 7535, South Africa
| | - Eiso AB
- Department of NMR Spectroscopy, Bijvoet Center for Biomolecular Research, University of Utrecht, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Andrew Faro
- Biotechnology Department, University of the Western Cape, Modderdam Road, Bellville 7535, South Africa
| | - Portia T Lutya
- Department of Molecular and Cell Biology, University of the Witwatersrand, 1 Jan Smuts Avenue, Johannesburg 2050, South Africa
| | - Eberhard Hoffmann
- Varian Deutschland GmbH, Alsfelder Straβe 3, D-64289 Darmstadt, Germany
| | - D Jasper G Rees
- Biotechnology Department, University of the Western Cape, Modderdam Road, Bellville 7535, South Africa
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Shomron N, Alberstein M, Reznik M, Ast G. Stress alters the subcellular distribution of hSlu7 and thus modulates alternative splicing. J Cell Sci 2005; 118:1151-9. [PMID: 15728250 DOI: 10.1242/jcs.01720] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
During pre-mRNA splicing, introns are removed and exons are ligated to form an mRNA. Exon choice is determined by different nuclear protein concentrations varying among tissues and cell types or by developmental stage. These can be altered by different cellular circumstances such as physiological stimuli, environmental effects and phosphorylation state. The splicing factor hSlu7 plays an important role in 3' splice site selection during the second step of splicing in vitro and has been suggested to affect alternative splicing in vivo. Our results indicate that an ultraviolet-C (UV-C) stress stimulus triggers changes in the alternative splicing patterns of cellular genes by decreasing the nuclear concentration of hSlu7 through the modulation of its nucleus-to-cytoplasm transport. This shift is mostly dependent on the Jun N-terminal kinase (JNK) cascade. Although we found by RNAi knockdown that hSlu7 is not essential for cell viability, its nuclear concentration effects exon choice and inclusion:skipping ratio of alternative splicing. A possible spatial and temporal regulatory mechanism by which hSlu7 protein levels are regulated within the nucleus is suggested, thus implying a broad effect of hSlu7 on alternative splicing.
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MESH Headings
- Active Transport, Cell Nucleus
- Alternative Splicing
- Base Sequence
- Blotting, Western
- Cell Line
- Cell Line, Tumor
- Cell Nucleus/metabolism
- Cell Nucleus/radiation effects
- Cell Survival
- Cytoplasm/metabolism
- Exons
- Glutathione Transferase/metabolism
- HeLa Cells
- Humans
- Image Processing, Computer-Assisted
- Introns
- JNK Mitogen-Activated Protein Kinases/metabolism
- Microscopy, Fluorescence
- Models, Genetic
- Molecular Sequence Data
- Phosphorylation
- RNA/metabolism
- RNA Interference
- RNA Splicing Factors
- RNA, Messenger/metabolism
- Recombinant Fusion Proteins/chemistry
- Reverse Transcriptase Polymerase Chain Reaction
- Ribonucleoproteins, Small Nuclear/chemistry
- Ribonucleoproteins, Small Nuclear/metabolism
- Sequence Homology, Nucleic Acid
- Spliceosomes/metabolism
- Temperature
- Time Factors
- Ultraviolet Rays
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Affiliation(s)
- Noam Shomron
- Department of Human Genetics and Molecular Medicine, Sackler School of Medicine, Tel Aviv University, Ramat Aviv 69978, Tel Aviv, Israel
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