1
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Abdel-Haq H. Feasibility of Using a Type I IFN-Based Non-Animal Approach to Predict Vaccine Efficacy and Safety Profiles. Vaccines (Basel) 2024; 12:583. [PMID: 38932312 PMCID: PMC11209158 DOI: 10.3390/vaccines12060583] [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: 05/07/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 06/28/2024] Open
Abstract
Animal-based tests are used for the control of vaccine quality. However, because highly purified and safe vaccines are now available, alternative approaches that can replace or reduce animal use for the assessment of vaccine outcomes must be established. In vitro tests for vaccine quality control exist and have already been implemented. However, these tests are specifically designed for some next-generation vaccines, and this makes them not readily available for testing other vaccines. Therefore, universal non-animal tests are still needed. Specific signatures of the innate immune response could represent a promising approach to predict the outcome of vaccines by non-animal methods. Type I interferons (IFNs) have multiple immunomodulatory activities, which are exerted through effectors called interferon stimulated genes (ISGs), and are one of the most important immune signatures that might provide potential candidate molecular biomarkers for this purpose. This paper will mainly examine if this idea might be feasible by analyzing all relevant published studies that have provided type I IFN-related biomarkers for evaluating the safety and efficacy profiles of vaccines using an advanced transcriptomic approach as an alternative to the animal methods. Results revealed that such an approach could potentially provide biomarkers predictive of vaccine outcomes after addressing some limitations.
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Affiliation(s)
- Hanin Abdel-Haq
- Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161 Rome, Italy
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2
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Solon M, Ge N, Hambro S, Haller S, Jiang J, Baca M, Preston J, Maltzman A, Wickliffe KE, Liang Y, Reja R, Nickles D, Newton K, Webster JD. ZBP1 and TRIF trigger lethal necroptosis in mice lacking caspase-8 and TNFR1. Cell Death Differ 2024; 31:672-682. [PMID: 38548850 PMCID: PMC11093969 DOI: 10.1038/s41418-024-01286-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 03/13/2024] [Accepted: 03/20/2024] [Indexed: 05/16/2024] Open
Abstract
Necroptosis is a lytic form of cell death that is mediated by the kinase RIPK3 and the pseudokinase MLKL when caspase-8 is inhibited downstream of death receptors, toll-like receptor 3 (TLR3), TLR4, and the intracellular Z-form nucleic acid sensor ZBP1. Oligomerization and activation of RIPK3 is driven by interactions with the kinase RIPK1, the TLR adaptor TRIF, or ZBP1. In this study, we use immunohistochemistry (IHC) and in situ hybridization (ISH) assays to generate a tissue atlas characterizing RIPK1, RIPK3, Mlkl, and ZBP1 expression in mouse tissues. RIPK1, RIPK3, and Mlkl were co-expressed in most immune cell populations, endothelial cells, and many barrier epithelia. ZBP1 was expressed in many immune populations, but had more variable expression in epithelia compared to RIPK1, RIPK3, and Mlkl. Intriguingly, expression of ZBP1 was elevated in Casp8-/- Tnfr1-/- embryos prior to their succumbing to aberrant necroptosis around embryonic day 15 (E15). ZBP1 contributed to this embryonic lethality because rare Casp8-/- Tnfr1-/- Zbp1-/- mice survived until after birth. Necroptosis mediated by TRIF contributed to the demise of Casp8-/- Tnfr1-/- Zbp1-/- pups in the perinatal period. Of note, Casp8-/- Tnfr1-/- Trif-/- Zbp1-/- mice exhibited autoinflammation and morbidity, typically within 5-7 weeks of being born, which is not seen in Casp8-/- Ripk1-/- Trif-/- Zbp1-/-, Casp8-/- Ripk3-/-, or Casp8-/- Mlkl-/- mice. Therefore, after birth, loss of caspase-8 probably unleashes RIPK1-dependent necroptosis driven by death receptors other than TNFR1.
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Affiliation(s)
- Margaret Solon
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Nianfeng Ge
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Shannon Hambro
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Susan Haller
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Jian Jiang
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Miriam Baca
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Jessica Preston
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Allie Maltzman
- Department of Physiological Chemistry, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Katherine E Wickliffe
- Department of Physiological Chemistry, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Yuxin Liang
- Department of Microchemistry, Proteomics, Lipidomics, and Next Generation Sequencing, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Rohit Reja
- Department of Physiological Chemistry, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
- Department of Oncology Bioinformatics, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Dorothee Nickles
- Department of Oncology Bioinformatics, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
- Department of Translational Oncology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Kim Newton
- Department of Physiological Chemistry, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA.
| | - Joshua D Webster
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA.
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3
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Zannikou M, Fish EN, Platanias LC. Signaling by Type I Interferons in Immune Cells: Disease Consequences. Cancers (Basel) 2024; 16:1600. [PMID: 38672681 PMCID: PMC11049350 DOI: 10.3390/cancers16081600] [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: 03/11/2024] [Revised: 04/08/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
This review addresses interferon (IFN) signaling in immune cells and the tumor microenvironment (TME) and examines how this affects cancer progression. The data reveal that IFNs exert dual roles in cancers, dependent on the TME, exhibiting both anti-tumor activity and promoting cancer progression. We discuss the abnormal IFN signaling induced by cancerous cells that alters immune responses to permit their survival and proliferation.
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Affiliation(s)
- Markella Zannikou
- Robert H. Lurie Comprehensive Cancer Center, Division of Hematology-Oncology, Feinberg School of Medicine, Northwestern University, 303 East Superior Ave., Chicago, IL 60611, USA
| | - Eleanor N. Fish
- Toronto General Hospital Research Institute, University Health Network, 67 College Street, Toronto, ON M5G 2M1, Canada;
- Department of Immunology, University of Toronto, 1 King’s College Circle, Toronto, ON M5S 1A8, Canada
| | - Leonidas C. Platanias
- Robert H. Lurie Comprehensive Cancer Center, Division of Hematology-Oncology, Feinberg School of Medicine, Northwestern University, 303 East Superior Ave., Chicago, IL 60611, USA
- Department of Medicine, Jesse Brown Veterans Affairs Medical Center, 820 S. Damen Ave., Chicago, IL 60612, USA
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4
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Ding J, Wang S, Liu Q, Duan Y, Cheng T, Ye Z, Cui Z, Zhang A, Liu Q, Zhang Z, Zhang N, Liu Q, An N, Zhao J, Yi D, Li Q, Wang J, Zhang Y, Ma L, Guo S, Wang J, Liang C, Zhou J, Cen S, Li X. Schlafen-5 inhibits LINE-1 retrotransposition. iScience 2023; 26:107968. [PMID: 37810251 PMCID: PMC10551903 DOI: 10.1016/j.isci.2023.107968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 07/20/2023] [Accepted: 09/15/2023] [Indexed: 10/10/2023] Open
Abstract
Long interspersed element 1 (LINE-1) is the only currently known active autonomous transposon in humans, and its retrotransposition may cause deleterious effects on the structure and function of host cell genomes and result in sporadic genetic diseases. Host cells therefore developed defense strategies to restrict LINE-1 mobilization. In this study, we demonstrated that IFN-inducible Schlafen5 (SLFN5) inhibits LINE-1 retrotransposition. Mechanistic studies revealed that SLFN5 interrupts LINE-1 ribonucleoprotein particle (RNP) formation, thus diminishing nuclear entry of the LINE-1 RNA template and subsequent LINE-1 cDNA production. The ability of SLFN5 to bind to LINE-1 RNA and the involvement of the helicase domain of SLFN5 in its inhibitory activity suggest a mechanism that SLFN5 binds to LINE-1 RNA followed by dissociation of ORF1p through its helicase activity, resulting in impaired RNP formation. These data highlight a new mechanism of host cells to restrict LINE-1 mobilization.
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Affiliation(s)
- Jiwei Ding
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Shujie Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Qipeng Liu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yuqing Duan
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Tingting Cheng
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zhongjie Ye
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zhanding Cui
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Ao Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Qiuyu Liu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zixiong Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Ning Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Qian Liu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Ni An
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jianyuan Zhao
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Dongrong Yi
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Quanjie Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jing Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yongxin Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Ling Ma
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Saisai Guo
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jinhui Wang
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Chen Liang
- The Lady Davis Institute-Jewish General Hospital, Montreal, QC H3T 1E2, Canada
| | - Jinming Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Shan Cen
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiaoyu Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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5
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Ding J, Wang S, Wang Z, Chen S, Zhao J, Solomon M, Liu Z, Guo F, Ma L, Wen J, Li X, Liang C, Cen S. Schlafen 5 suppresses human immunodeficiency virus type 1 transcription by commandeering cellular epigenetic machinery. Nucleic Acids Res 2022; 50:6137-6153. [PMID: 35687115 PMCID: PMC9226525 DOI: 10.1093/nar/gkac489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 05/17/2022] [Accepted: 05/26/2022] [Indexed: 11/14/2022] Open
Abstract
Schlafen-5 (SLFN5) is an interferon-induced protein of the Schlafen family, which are involved in immune responses and oncogenesis. To date, little is known regarding its anti-HIV-1 function. Here, the authors report that overexpression of SLFN5 inhibits HIV-1 replication and reduces viral mRNA levels, whereas depletion of endogenous SLFN5 promotes HIV-1 replication. Moreover, they show that SLFN5 markedly decreases the transcriptional activity of HIV-1 long terminal repeat (LTR) via binding to two sequences in the U5-R region, which consequently represses the recruitment of RNA polymerase II to the transcription initiation site. Mutagenesis studies show the importance of nuclear localization and the N-terminal 1-570 amino acids fragment in the inhibition of HIV-1. Further mechanistic studies demonstrate that SLFN5 interacts with components of the PRC2 complex, G9a and Histone H3, thereby promoting H3K27me2 and H3K27me3 modification leading to silencing HIV-1 transcription. In concert with this, they find that SLFN5 blocks the activation of latent HIV-1. Altogether, their findings demonstrate that SLFN5 is a transcriptional repressor of HIV-1 through epigenetic modulation and a potential determinant of HIV-1 latency.
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Affiliation(s)
- Jiwei Ding
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science, Beijing, China
| | - Shujie Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science, Beijing, China
| | - Zhen Wang
- Lady Davis Institute for Medical Research and McGill AIDS Centre, Jewish General Hospital, Montreal, Quebec, Canada
| | - Shumin Chen
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science, Beijing, China
| | - Jianyuan Zhao
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science, Beijing, China
| | - Magan Solomon
- Lady Davis Institute for Medical Research and McGill AIDS Centre, Jewish General Hospital, Montreal, Quebec, Canada
| | - Zhenlong Liu
- Lady Davis Institute for Medical Research and McGill AIDS Centre, Jewish General Hospital, Montreal, Quebec, Canada
| | - Fei Guo
- Institute of Pathogen Biology, Chinese Academy of Medical Science, Beijing, China
| | - Ling Ma
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science, Beijing, China
| | - Jiajia Wen
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science, Beijing, China
| | - Xiaoyu Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science, Beijing, China
| | - Chen Liang
- Lady Davis Institute for Medical Research and McGill AIDS Centre, Jewish General Hospital, Montreal, Quebec, Canada
| | - Shan Cen
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science, Beijing, China.,CAMS Key Laboratory of Antiviral Drug Research, Chinese Academy of Medical Science, Beijing, China
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6
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Warsi S, Dahl M, Smith EMK, Rydström A, Mansell E, Sigurdsson V, Sjöberg J, Soneji S, Rörby E, Siva K, Grahn THM, Liu Y, Blank U, Karlsson G, Karlsson S. Schlafen2 is a regulator of quiescence in adult murine hematopoietic stem cells. Haematologica 2022; 107:2884-2896. [PMID: 35615926 PMCID: PMC9713563 DOI: 10.3324/haematol.2021.279799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Indexed: 12/14/2022] Open
Abstract
Even though hematopoietic stem cells (HSC) are characterized by their ability to self-renew and differentiate, they primarily reside in quiescence. Despite the immense importance of this quiescent state, its maintenance and regulation is still incompletely understood. Schlafen2 (Slfn2) is a cytoplasmic protein known to be involved in cell proliferation, differentiation, quiescence, interferon response, and regulation of the immune system. Interestingly, Slfn2 is highly expressed in primitive hematopoietic cells. In order to investigate the role of Slfn2 in the regulation of HSC we have studied HSC function in the elektra mouse model, where the elektra allele of the Slfn2 gene contains a point mutation causing loss of function of the Slfn2 protein. We found that homozygosity for the elektra allele caused a decrease of primitive hematopoietic compartments in murine bone marrow. We further found that transplantation of elektra bone marrow and purified HSC resulted in a significantly reduced regenerative capacity of HSC in competitive transplantation settings. Importantly, we found that a significantly higher fraction of elektra HSC (as compared to wild-type HSC) were actively cycling, suggesting that the mutation in Slfn2 increases HSC proliferation. This additionally caused an increased amount of apoptotic stem and progenitor cells. Taken together, our findings demonstrate that dysregulation of Slfn2 results in a functional deficiency of primitive hematopoietic cells, which is particularly reflected by a drastically impaired ability to reconstitute the hematopoietic system following transplantation and an increase in HSC proliferation. This study thus identifies Slfn2 as a novel and critical regulator of adult HSC and HSC quiescence.
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Affiliation(s)
- Sarah Warsi
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University,Skåne University Hospital, Region Skåne,S. Warsi
| | - Maria Dahl
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
| | - Emma M. K. Smith
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
| | - Anna Rydström
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
| | - Els Mansell
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
| | - Valgardur Sigurdsson
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
| | - Julia Sjöberg
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
| | - Shamit Soneji
- Division of Molecular Hematology, Lund Stem Cell Center, Lund University,Lund University Bioinformatics Core, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Emma Rörby
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
| | - Kavitha Siva
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
| | - Tan H. M. Grahn
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
| | - Yang Liu
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
| | - Ulrika Blank
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
| | - Göran Karlsson
- Division of Molecular Hematology, Lund Stem Cell Center, Lund University
| | - Stefan Karlsson
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University
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7
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Schlafens Can Put Viruses to Sleep. Viruses 2022; 14:v14020442. [PMID: 35216035 PMCID: PMC8875196 DOI: 10.3390/v14020442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/11/2022] [Accepted: 02/15/2022] [Indexed: 12/21/2022] Open
Abstract
The Schlafen gene family encodes for proteins involved in various biological tasks, including cell proliferation, differentiation, and T cell development. Schlafens were initially discovered in mice, and have been studied in the context of cancer biology, as well as their role in protecting cells during viral infection. This protein family provides antiviral barriers via direct and indirect effects on virus infection. Schlafens can inhibit the replication of viruses with both RNA and DNA genomes. In this review, we summarize the cellular functions and the emerging relationship between Schlafens and innate immunity. We also discuss the functions and distinctions of this emerging family of proteins as host restriction factors against viral infection. Further research into Schlafen protein function will provide insight into their mechanisms that contribute to intrinsic and innate host immunity.
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8
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Metzner FJ, Huber E, Hopfner KP, Lammens K. Structural and biochemical characterization of human Schlafen 5. Nucleic Acids Res 2022; 50:1147-1161. [PMID: 35037067 PMCID: PMC8789055 DOI: 10.1093/nar/gkab1278] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 12/08/2021] [Accepted: 12/14/2021] [Indexed: 11/15/2022] Open
Abstract
The Schlafen family belongs to the interferon-stimulated genes and its members are involved in cell cycle regulation, T cell quiescence, inhibition of viral replication, DNA-repair and tRNA processing. Here, we present the cryo-EM structure of full-length human Schlafen 5 (SLFN5) and the high-resolution crystal structure of the highly conserved N-terminal core domain. We show that the core domain does not resemble an ATPase-like fold and neither binds nor hydrolyzes ATP. SLFN5 binds tRNA as well as single- and double-stranded DNA, suggesting a potential role in transcriptional regulation. Unlike rat Slfn13 or human SLFN11, human SLFN5 did not cleave tRNA. Based on the structure, we identified two residues in proximity to the zinc finger motif that decreased DNA binding when mutated. These results indicate that Schlafen proteins have divergent enzymatic functions and provide a structural platform for future biochemical and genetic studies.
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Affiliation(s)
- Felix J Metzner
- Department of Biochemistry, Gene Center, Feodor-Lynen-Straße 25, 81377 München, Germany
| | - Elisabeth Huber
- Department of Biochemistry, Gene Center, Feodor-Lynen-Straße 25, 81377 München, Germany
| | - Karl-Peter Hopfner
- Department of Biochemistry, Gene Center, Feodor-Lynen-Straße 25, 81377 München, Germany
| | - Katja Lammens
- Department of Biochemistry, Gene Center, Feodor-Lynen-Straße 25, 81377 München, Germany
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9
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Yumi Noronha N, da Silva Rodrigues G, Harumi Yonehara Noma I, Fernanda Cunha Brandao C, Pereira Rodrigues K, Colello Bruno A, Sae-Lee C, Moriguchi Watanabe L, Augusta de Souza Pinhel M, Mello Schineider I, Luciano de Almeida M, Barbosa Júnior F, Araújo Morais D, Tavares de Sousa Júnior W, Plösch T, Roberto Bueno Junior C, Barbosa Nonino C. 14-weeks combined exercise epigenetically modulated 118 genes of menopausal women with prediabetes. Front Endocrinol (Lausanne) 2022; 13:895489. [PMID: 36046788 PMCID: PMC9423096 DOI: 10.3389/fendo.2022.895489] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 07/19/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Pre-diabetes precedes Diabetes Mellitus (DM) disease and is a critical period for hyperglycemia treatment, especially for menopausal women, considering all metabolic alterations due to hormonal changes. Recently, the literature has demonstrated the role of physical exercise in epigenetic reprogramming to modulate the gene expression patterns of metabolic conditions, such as hyperglycemia, and prevent DM development. In the present study, we hypothesized that physical exercise training could modify the epigenetic patterns of women with poor glycemic control. METHODS 48 post-menopause women aged 60.3 ± 4.5 years were divided according to their fasting blood glucose levels into two groups: Prediabetes Group, PG (n=24), and Normal Glucose Group, NGG (n=24). All participants performed 14 weeks of physical exercise three times a week. The Infinium Methylation EPIC BeadChip measured the participants' Different Methylated Regions (DMRs). RESULTS Before the intervention, the PG group had 12 DMRs compared to NGG. After the intervention, five DMRs remained different. Interestingly, when comparing the PG group before and after training, 118 DMRs were found. The enrichment analysis revealed that the genes were related to different biological functions such as energy metabolism, cell differentiation, and tumor suppression. CONCLUSION Physical exercise is a relevant alternative in treating hyperglycemia and preventing DM in post-menopause women with poor glycemic control.
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Affiliation(s)
- Natália Yumi Noronha
- Department of Internal Medicine, Ribeirão Preto Medical School, Ribeirão Preto, São Paulo, Brazil
| | - Guilherme da Silva Rodrigues
- Department of Internal Medicine, Ribeirão Preto Medical School, Ribeirão Preto, São Paulo, Brazil
- *Correspondence: Guilherme da Silva Rodrigues,
| | - Isabella Harumi Yonehara Noma
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Camila Fernanda Cunha Brandao
- Department of Internal Medicine, Ribeirão Preto Medical School, Ribeirão Preto, São Paulo, Brazil
- Physical Education School, Minas Gerais State University, Divinópolis, Minas Gerais, Brazil
| | - Karine Pereira Rodrigues
- Department of Internal Medicine, Ribeirão Preto Medical School, Ribeirão Preto, São Paulo, Brazil
| | - Alexandre Colello Bruno
- Department of Radiotherapy, Ribeirão Preto Medical School Hospital and Clinics, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Chanachai Sae-Lee
- Research Division, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | | | - Marcela Augusta de Souza Pinhel
- Department of Internal Medicine, Ribeirão Preto Medical School, Ribeirão Preto, São Paulo, Brazil
- Department of Molecular Biology, São José do Rio Preto Medical School, São José do Rio Preto, SP, Brazil
| | | | | | - Fernando Barbosa Júnior
- Department of Clinical Analysis, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Déborah Araújo Morais
- Department of Clinical Analysis, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Wellington Tavares de Sousa Júnior
- Department of Clinical Analysis, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Torsten Plösch
- University Medical Center Groningen, Groningen, Netherlands
| | - Carlos Roberto Bueno Junior
- Department of Internal Medicine, Ribeirão Preto Medical School, Ribeirão Preto, São Paulo, Brazil
- Ribeirão Preto School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
| | - Carla Barbosa Nonino
- Department of Internal Medicine, Ribeirão Preto Medical School, Ribeirão Preto, São Paulo, Brazil
- Department of Health Sciences, Ribeirão Preto Medical School, Ribeirão Preto, São Paulo, Brazil
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10
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Dual transcriptomics to determine interferon-gamma independent host response to intestinal Cryptosporidium parvum infection. Infect Immun 2021; 90:e0063821. [PMID: 34928716 PMCID: PMC8852703 DOI: 10.1128/iai.00638-21] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Animals with a chronic infection of the parasite Toxoplasma gondii are protected against lethal secondary infection with other pathogens. Our group previously determined that soluble T. gondii antigens (STAg) can mimic this protection and be used as a treatment against several lethal pathogens. Because treatments are limited for the parasite Cryptosporidium parvum, we tested STAg as a C. parvum therapeutic. We determined that STAg treatment reduced C. parvum Iowa II oocyst shedding in gamma interferon knockout (IFN-γ-KO) mice. Murine intestinal sections were then sequenced to define the IFN-γ-independent transcriptomic response to C. parvum infection. Gene Ontology and transcript abundance comparisons showed host immune response and metabolism changes. Transcripts for type I interferon-responsive genes were more abundant in C. parvum-infected mice treated with STAg. Comparisons between phosphate-buffered saline (PBS) and STAg treatments showed no significant differences in C. parvum gene expression. C. parvum transcript abundance was highest in the ileum and mucin-like glycoproteins and the GDP-fucose transporter were among the most abundant. These results will assist the field in determining both host- and parasite-directed future therapeutic targets.
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11
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Vomhof-DeKrey EE, Stover AD, Labuhn M, Osman MR, Basson MD. Vil-Cre specific Schlafen 3 knockout mice exhibit sex-specific differences in intestinal differentiation markers and Schlafen family members expression levels. PLoS One 2021; 16:e0259195. [PMID: 34710177 PMCID: PMC8553116 DOI: 10.1371/journal.pone.0259195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 10/14/2021] [Indexed: 11/25/2022] Open
Abstract
The intestinal epithelium requires self-renewal and differentiation in order to function and adapt to pathological diseases such as inflammatory bowel disease, short gut syndrome, and ulcers. The rodent Slfn3 protein and the human Slfn12 analog are known to regulate intestinal epithelial differentiation. Previous work utilizing a pan-Slfn3 knockout (KO) mouse model revealed sex-dependent gene expression disturbances in intestinal differentiation markers, metabolic pathways, Slfn family member mRNA expression, adaptive immune cell proliferation/functioning genes, and phenotypically less weight gain and sex-dependent changes in villus length and crypt depth. We have now created a Vil-Cre specific Slfn3KO (VC-Slfn3KO) mouse to further evaluate its role in intestinal differentiation. There were increases in Slfn1, Slfn2, Slfn4, and Slfn8 and decreases in Slfn5 and Slfn9 mRNA expression that were intestinal region and sex-specific. Differentiation markers, sucrase isomaltase (SI), villin 1, and dipeptidyl peptidase 4 and glucose transporters, glucose transporter 1 (Glut1), Glut2, and sodium glucose transporter 1 (SGLT1), were increased in expression in VC-Slfn3KO mice based on intestinal region and were also highly female sex-biased, except for SI in the ileum was also increased for male VC-Slfn3KO mice and SGLT1 was decreased for both sexes. Overall, the variations that we observed in these VC-Slfn3KO mice indicate a complex regulation of intestinal gene expression that is sex-dependent.
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Affiliation(s)
- Emilie E. Vomhof-DeKrey
- Department of Surgery, School of Medicine and the Health Sciences, University of North Dakota, Grand Forks, ND, United States of America
- Department of Biomedical Sciences, School of Medicine and the Health Sciences, University of North Dakota, Grand Forks, ND, United States of America
| | - Allie D. Stover
- Department of Biomedical Sciences, School of Medicine and the Health Sciences, University of North Dakota, Grand Forks, ND, United States of America
| | - Mary Labuhn
- Department of Biomedical Sciences, School of Medicine and the Health Sciences, University of North Dakota, Grand Forks, ND, United States of America
| | - Marcus R. Osman
- Department of Biomedical Sciences, School of Medicine and the Health Sciences, University of North Dakota, Grand Forks, ND, United States of America
| | - Marc D. Basson
- Department of Surgery, School of Medicine and the Health Sciences, University of North Dakota, Grand Forks, ND, United States of America
- Department of Biomedical Sciences, School of Medicine and the Health Sciences, University of North Dakota, Grand Forks, ND, United States of America
- Department of Pathology, School of Medicine and the Health Sciences, University of North Dakota, Grand Forks, ND, United States of America
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12
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Murai Y, Jo U, Murai J, Fukuda S, Takebe N, Pommier Y. Schlafen 11 expression in human acute leukemia cells with gain-of-function mutations in the interferon-JAK signaling pathway. iScience 2021; 24:103173. [PMID: 34693224 PMCID: PMC8517841 DOI: 10.1016/j.isci.2021.103173] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/16/2021] [Accepted: 09/22/2021] [Indexed: 12/28/2022] Open
Abstract
Schlafen11 (SLFN11) is referred to as interferon (IFN)-inducible. Based on cancer genomic databases, we identified human acute myeloid and lymphoblastic leukemia cells with gain-of-function mutations in the Janus kinase (JAK) family as exhibiting high SLFN11 expression. In these cells, the clinical JAK inhibitors cerdulatinib, ruxolitinib, and tofacitinib reduced SLFN11 expression, but IFN did not further induce SLFN11 despite phosphorylated STAT1. We provide evidence that suppression of SLFN11 by JAK inhibitors is caused by inactivation of the non-canonical IFN pathway controlled by AKT and ERK. Accordingly, the AKT and ERK inhibitors MK-2206 and SCH77284 suppressed SLFN11 expression. Both also suppressed the E26 transformation-specific (ETS)-family genes ETS-1 and FLI-1 that act as transcription factors for SLFN11. Moreover, SLFN11 expression was inhibited by the ETS inhibitor TK216. Our study reveals that SLFN11 expression is regulated via the JAK, AKT and ERK, and ETS axis. Pharmacological suppression of SLFN11 warrants future studies.
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Affiliation(s)
- Yasuhisa Murai
- Developmental Therapeutics Branch and Laboratory of Molecular Pharmacology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Ukhyun Jo
- Developmental Therapeutics Branch and Laboratory of Molecular Pharmacology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA
| | - Junko Murai
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
| | - Shinsaku Fukuda
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Naoko Takebe
- Developmental Therapeutics Branch and Laboratory of Molecular Pharmacology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA
- Developmental Therapeutics Branch and Division of Cancer Treatment and Diagnosis, National Cancer Institute, NIH, Bethesda, MD, USA
| | - Yves Pommier
- Developmental Therapeutics Branch and Laboratory of Molecular Pharmacology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA
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13
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Sapio MR, Kim JJ, Loydpierson AJ, Maric D, Goto T, Vazquez FA, Dougherty MK, Narasimhan R, Muhly WT, Iadarola MJ, Mannes AJ. The Persistent Pain Transcriptome: Identification of Cells and Molecules Activated by Hyperalgesia. THE JOURNAL OF PAIN 2021; 22:1146-1179. [PMID: 33892151 PMCID: PMC9441406 DOI: 10.1016/j.jpain.2021.03.155] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 03/12/2021] [Accepted: 03/16/2021] [Indexed: 12/21/2022]
Abstract
During persistent pain, the dorsal spinal cord responds to painful inputs from the site of injury, but the molecular modulatory processes have not been comprehensively examined. Using transcriptomics and multiplex in situ hybridization, we identified the most highly regulated receptors and signaling molecules in rat dorsal spinal cord in peripheral inflammatory and post-surgical incisional pain models. We examined a time course of the response including acute (2 hours) and longer term (2 day) time points after peripheral injury representing the early onset and instantiation of hyperalgesic processes. From this analysis, we identify a key population of superficial dorsal spinal cord neurons marked by somatotopic upregulation of the opioid neuropeptide precursor prodynorphin, and 2 receptors: the neurokinin 1 receptor, and anaplastic lymphoma kinase. These alterations occur specifically in the glutamatergic subpopulation of superficial dynorphinergic neurons. In addition to specific neuronal gene regulation, both models showed induction of broad transcriptional signatures for tissue remodeling, synaptic rearrangement, and immune signaling defined by complement and interferon induction. These signatures were predominantly induced ipsilateral to tissue injury, implying linkage to primary afferent drive. We present a comprehensive set of gene regulatory events across 2 models that can be targeted for the development of non-opioid analgesics. PERSPECTIVE: The deadly impact of the opioid crisis and the need to replace morphine and other opioids in clinical practice is well recognized. Embedded within this research is an overarching goal of obtaining foundational knowledge from transcriptomics to search for non-opioid analgesic targets. Developing such analgesics would address unmet clinical needs.
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Affiliation(s)
- Matthew R Sapio
- Department of Perioperative Medicine, National Institutes of Health Clinical Center, NIH, Bethesda, Maryland
| | - Jenny J Kim
- Department of Perioperative Medicine, National Institutes of Health Clinical Center, NIH, Bethesda, Maryland
| | - Amelia J Loydpierson
- Department of Perioperative Medicine, National Institutes of Health Clinical Center, NIH, Bethesda, Maryland
| | - Dragan Maric
- National Institute of Neurological Disorders and Stroke, Flow and Imaging Cytometry Core Facility, NIH, Bethesda, Maryland
| | - Taichi Goto
- Department of Perioperative Medicine, National Institutes of Health Clinical Center, NIH, Bethesda, Maryland; National Institute of Nursing Research, Symptom Management Branch, NIH, Bethesda, Maryland; Japan Society for the Promotion of Science Overseas Research Fellowship, Tokyo, Japan
| | - Fernando A Vazquez
- Department of Perioperative Medicine, National Institutes of Health Clinical Center, NIH, Bethesda, Maryland
| | - Mary K Dougherty
- Department of Perioperative Medicine, National Institutes of Health Clinical Center, NIH, Bethesda, Maryland
| | - Radhika Narasimhan
- Department of Perioperative Medicine, National Institutes of Health Clinical Center, NIH, Bethesda, Maryland
| | - Wallis T Muhly
- National Institute of Nursing Research, Symptom Management Branch, NIH, Bethesda, Maryland; Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Michael J Iadarola
- Department of Perioperative Medicine, National Institutes of Health Clinical Center, NIH, Bethesda, Maryland.
| | - Andrew J Mannes
- Department of Perioperative Medicine, National Institutes of Health Clinical Center, NIH, Bethesda, Maryland
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14
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Schlafens: Emerging Proteins in Cancer Cell Biology. Cells 2021; 10:cells10092238. [PMID: 34571887 PMCID: PMC8465726 DOI: 10.3390/cells10092238] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 08/23/2021] [Accepted: 08/25/2021] [Indexed: 12/29/2022] Open
Abstract
Schlafens (SLFN) are a family of genes widely expressed in mammals, including humans and rodents. These intriguing proteins play different roles in regulating cell proliferation, cell differentiation, immune cell growth and maturation, and inhibiting viral replication. The emerging evidence is implicating Schlafens in cancer biology and chemosensitivity. Although Schlafens share common domains and a high degree of homology, different Schlafens act differently. In particular, they show specific and occasionally opposing effects in some cancer types. This review will briefly summarize the history, structure, and non-malignant biological functions of Schlafens. The roles of human and mouse Schlafens in different cancer types will then be outlined. Finally, we will discuss the implication of Schlafens in the anti-tumor effect of interferons and the use of Schlafens as predictors of chemosensitivity.
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15
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Yue T, Zhan X, Zhang D, Jain R, Wang KW, Choi JH, Misawa T, Su L, Quan J, Hildebrand S, Xu D, Li X, Turer E, Sun L, Moresco EMY, Beutler B. SLFN2 protection of tRNAs from stress-induced cleavage is essential for T cell-mediated immunity. Science 2021; 372:372/6543/eaba4220. [PMID: 33986151 PMCID: PMC8442736 DOI: 10.1126/science.aba4220] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 12/02/2020] [Accepted: 03/25/2021] [Indexed: 01/05/2023]
Abstract
Reactive oxygen species (ROS) increase in activated T cells because of metabolic activity induced to support T cell proliferation and differentiation. We show that these ROS trigger an oxidative stress response that leads to translation repression. This response is countered by Schlafen 2 (SLFN2), which directly binds transfer RNAs (tRNAs) to protect them from cleavage by the ribonuclease angiogenin. T cell-specific SLFN2 deficiency results in the accumulation of tRNA fragments, which inhibit translation and promote stress-granule formation. Interleukin-2 receptor β (IL-2Rβ) and IL-2Rγ fail to be translationally up-regulated after T cell receptor stimulation, rendering SLFN2-deficient T cells insensitive to interleukin-2's mitogenic effects. SLFN2 confers resistance against the ROS-mediated translation-inhibitory effects of oxidative stress normally induced by T cell activation, permitting the robust protein synthesis necessary for T cell expansion and immunity.
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Affiliation(s)
- Tao Yue
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Xiaoming Zhan
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Duanwu Zhang
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Ruchi Jain
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Kuan-wen Wang
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jin Huk Choi
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Takuma Misawa
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Lijing Su
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jiexia Quan
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Sara Hildebrand
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Darui Xu
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Xiaohong Li
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Emre Turer
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.,Department of Internal Medicine, Division of Gastroenterology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Lei Sun
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Eva Marie Y. Moresco
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Bruce Beutler
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.,Correspondence to:
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16
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Fischietti M, Eckerdt F, Blyth GT, Arslan AD, Mati WM, Oku CV, Perez RE, Lee-Chang C, Kosciuczuk EM, Saleiro D, Beauchamp EM, Lesniak MS, Verzella D, Sun L, Fish EN, Yang GY, Qiang W, Platanias LC. Schlafen 5 as a novel therapeutic target in pancreatic ductal adenocarcinoma. Oncogene 2021; 40:3273-3286. [PMID: 33846574 PMCID: PMC8106654 DOI: 10.1038/s41388-021-01761-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 03/04/2021] [Accepted: 03/17/2021] [Indexed: 02/06/2023]
Abstract
We provide evidence that a member of the human Schlafen (SLFN) family of proteins, SLFN5, is overexpressed in human pancreatic ductal adenocarcinoma (PDAC). Targeted deletion of SLFN5 results in decreased PDAC cell proliferation and suppresses PDAC tumorigenesis in in vivo PDAC models. Importantly, high expression levels of SLFN5 correlate with worse outcomes in PDAC patients, implicating SLFN5 in the pathophysiology of PDAC that leads to poor outcomes. Our studies establish novel regulatory effects of SLFN5 on cell cycle progression through binding/blocking of the transcriptional repressor E2F7, promoting transcription of key genes that stimulate S phase progression. Together, our studies suggest an essential role for SLFN5 in PDAC and support the potential for developing new therapeutic approaches for the treatment of pancreatic cancer through SLFN5 targeting.
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Affiliation(s)
- Mariafausta Fischietti
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA
- Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Frank Eckerdt
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Gavin T Blyth
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA
- Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Ahmet D Arslan
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA
- Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - William M Mati
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA
- Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Chidera V Oku
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA
- Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Ricardo E Perez
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA
- Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Catalina Lee-Chang
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Ewa M Kosciuczuk
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA
- Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
- Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, IL, USA
| | - Diana Saleiro
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA
- Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Elspeth M Beauchamp
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA
- Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
- Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, IL, USA
| | - Maciej S Lesniak
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Daniela Verzella
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Leyu Sun
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Eleanor N Fish
- Toronto General Hospital Research Institute, University Health Network and Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Guang-Yu Yang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Wenan Qiang
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Evanston, IL, USA
| | - Leonidas C Platanias
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA.
- Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
- Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, IL, USA.
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17
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Gu X, Wan G, Yang Y, Liu Y, Yang X, Zheng Y, Jiang L, Zhang P, Liu D, Zhao W, Huang G, Lu C. SLFN5 influences proliferation and apoptosis by upregulating PTEN transcription via ZEB1 and inhibits the purine metabolic pathway in breast cancer. Am J Cancer Res 2020; 10:2832-2850. [PMID: 33042620 PMCID: PMC7539779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/14/2020] [Indexed: 06/11/2023] Open
Abstract
Human Schlafen-5 (SLFN5) is aberrantly involved in tumorigenesis in several types of cancer. However, its implications in breast cancer (BRCA) are unknown. Herein, we demonstrated that SLFN5 expression is negatively associated with the tumour growth of human BRCA using GEO database analysis and clinical sample immunostaining. Lentiviral overexpression of SLFN5 in BRCA cell lines suppressed tumourigenicity in nude mice. Knockdown and overexpression of SLFN5 in BRCA cell lines proved that SLFN5 can inhibit cell proliferation and colony formation and promote apoptosis by upregulating the transcription of a known cancer suppressor gene (the phosphatase and tensin homologue on chromosome 10, PTEN), resulting in molecular changes in the downstream AKT pathway and in proliferation/apoptosis. Lentiviral knockdown and overexpression of ZEB1 blocked the changes in the PTEN and AKT pathways and in the colony formation ability caused by SLFN5 knockdown and overexpression, respectively. Luciferase reporter assays demonstrated that ZEB1 can inhibit the PTEN promoter activity in MCF7 cells by binding to a motif in the PTEN promoter. Metabonomics analysis showed that SLFN5 influences many metabolic pathways and especially decreases purine metabolites, including inosine, xanthine, and hypoxanthine. In conclusion, our findings suggest that SLFN5 may be an important protective factor against BRCA, as it regulates PTEN transcription, the AKT pathway, and proliferation/apoptosis via ZEB1 mediation and inhibits the purine metabolic pathway. Thus, SLFN5 may be a potential therapeutic target for BRCA.
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Affiliation(s)
- Xuefeng Gu
- Shanghai University of Medicine & Health Science Affiliated Zhoupu HospitalShanghai, P. R. China
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health SciencesShanghai, P. R. China
- School of Pharmacy, Shanghai University of Medicine & Health SciencesShanghai, P. R. China
| | - Guoqing Wan
- Shanghai University of Medicine & Health Science Affiliated Zhoupu HospitalShanghai, P. R. China
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health SciencesShanghai, P. R. China
- School of Pharmacy, Shanghai University of Medicine & Health SciencesShanghai, P. R. China
| | - Yue Yang
- Department of Pathology, Mudanjiang Medical UniversityMudanjiang, P. R. China
| | - Yihao Liu
- NHC Key Laboratory of Human Disease Comparative Medicine, Institute of Laboratory Animal Sciences, CAMS&PUMCBeijing, P. R. China
- Beijing Engineering Research Center for Experimental Animal Models of Human Critical DiseasesBeijing, P. R. China
| | - Xintong Yang
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health SciencesShanghai, P. R. China
| | - Yanjun Zheng
- Shanghai University of Medicine & Health Science Affiliated Zhoupu HospitalShanghai, P. R. China
| | - Liying Jiang
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health SciencesShanghai, P. R. China
| | - Peng Zhang
- School of Clinical Medicine, Shanghai University of Medicine & Health SciencesShanghai, P. R. China
| | - Dingsheng Liu
- Shanghai University of Medicine & Health Science Affiliated Zhoupu HospitalShanghai, P. R. China
| | | | - Gang Huang
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health SciencesShanghai, P. R. China
| | - Changlian Lu
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine & Health SciencesShanghai, P. R. China
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18
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Saleiro D, Platanias LC. Interferon signaling in cancer. Non-canonical pathways and control of intracellular immune checkpoints. Semin Immunol 2020; 43:101299. [PMID: 31771762 DOI: 10.1016/j.smim.2019.101299] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 08/11/2019] [Indexed: 01/01/2023]
Abstract
The interferons (IFNs) are cytokines with important antineoplastic and immune modulatory effects. These cytokines have been conserved through evolution as important elements of the immune surveillance against cancer. Despite this, defining their precise and specific roles in the generation of antitumor responses remains challenging. Emerging evidence suggests the existence of previously unknown roles for IFNs in the control of the immune response against cancer that may redefine our understanding on how these cytokines function. Beyond the engagement of classical JAK-STAT signaling pathways that promote transcription and expression of gene products, the IFNs engage multiple other signaling cascades to generate products that mediate biological responses and outcomes. There is recent emerging evidence indicating that IFNs control the expression of both traditional immune checkpoints like the PD-L1/PD1 axis, but also less well understood "intracellular" immune checkpoints whose targeting may define new approaches for the treatment of malignancies.
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Affiliation(s)
- Diana Saleiro
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Feinberg School of Medicine, Northwestern University, 303 East Superior Ave., Chicago, IL 60611, USA
| | - Leonidas C Platanias
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Feinberg School of Medicine, Northwestern University, 303 East Superior Ave., Chicago, IL 60611, USA; Department of Medicine, Jesse Brown Veterans Affairs Medical Center, 820 S. Damen Ave., Chicago, IL 60612, USA.
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19
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Lo SG, Wong SF, Mak JW, Choo KK, Ng KP. Gene expression changes in human bronchial epithelial cells (BEAS-2B) and human pulmonary alveolar epithelial cells (HPAEpiC) after interaction with Cladosporium sphaerospermum. Med Mycol 2020; 58:333-340. [PMID: 31309220 DOI: 10.1093/mmy/myz061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 05/07/2019] [Accepted: 05/17/2019] [Indexed: 12/21/2022] Open
Abstract
Cladosporium is one of the most abundant spore. Fungi of this genus can cause respiratory allergy and intrabronchial lesion. We studied the differential expression of host genes after the interaction of Cladosporium sphaerospermum conidia with Human Bronchial Epithelial Cells (BEAS-2B) and Human Pulmonary Alveolar Epithelial Cells (HPAEpiC). C. sphaerospermum conidia were harvested and co-cultured with BEAS-2B cells or HPAEpiC cells for 48 hours respectively. This culture duration was chosen as it was associated with high germination rate. RNA was extracted from two biological replicates per treatment. RNA of BEAS-2B cells was used to assess changes in gene expression using AffymetrixGeneChip® Human Transcriptome Array 2.0. After co-culture with Cladosporium spores, 68 individual genes were found differentially expressed (P ≤ 0.05) and up-regulated ≥ 1.5 folds while 75 genes were found differentially expressed at ≤ -1.5 folds compared with controls. Reverse transcription and qPCR were performed on the RNA collected from both BEAS-2B cells and HPAEpiC cells to validate the microarray results with 7 genes. Based on the findings, infected pulmonary epithelial cells exhibited an increase in cell death-related genes and genes associated with innate immunity.
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Affiliation(s)
- Sing Gee Lo
- International Medical University, 57000 Kuala Lumpur, Malaysia
| | - Shew Fung Wong
- International Medical University, 57000 Kuala Lumpur, Malaysia
| | - Joon Wah Mak
- International Medical University, 57000 Kuala Lumpur, Malaysia
| | - Khi Khi Choo
- International Medical University, 57000 Kuala Lumpur, Malaysia
| | - Kee Peng Ng
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
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20
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Vomhof-DeKrey EE, Umthun J, Basson MD. Loss of Schlafen3 influences the expression levels of Schlafen family members in ileum, thymus, and spleen tissue. PeerJ 2020; 8:e8461. [PMID: 32025381 PMCID: PMC6993753 DOI: 10.7717/peerj.8461] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 12/26/2019] [Indexed: 12/11/2022] Open
Abstract
Background The Schlafen (Slfn) family proteins are important for regulation of cell growth, cell differentiation and cell cycle progression. We sought to distinguish Slfn family expression in Slfn3 knockout (KO) mice after RNA sequencing analysis of Slfn3KO vs. wildtype (WT) mice revealed varying expressions of Slfn family in ileal mucosa. Methods Quantitative PCR analysis of Slfn members was evaluated in ileal mucosa, thymus and spleen tissue since Slfn family members have roles in differentiating intestinal and immune cells. Results Ileal mucosa of Slfn3KO mice displayed a decrease in Slfn3, 4, 8 and 9 while Slfn1 and 5 increased in mRNA expression vs. WT mice. Thymic tissue had a Slfn9 increase and a Slfn4 decrease while splenic tissue had a Slfn8 and Slfn9 increase in Slfn3KO mice vs. WT mice. These differential expressions of Slfn members could indicate a feedback regulatory mechanism within the Slfn family. Indeed, MATCH™ tool from geneXplain predicted that all Slfn members have regions in their promoters for the Kruppel-like factor-6 transcription factor. In addition, NFAT related factors, ING4, ZNF333 and KLF4 are also predicted to bind in up to 6 of the 8 Slfn promoters. This study further describes a possible autoregulatory mechanism amongst the Slfn family members which could be important in how they regulate the differentiation of various cell types.
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Affiliation(s)
- Emilie E Vomhof-DeKrey
- Departments of Surgery, Pathology, and Biomedical Sciences, University of North Dakota, Grand Forks, ND, USA
| | - Josey Umthun
- Departments of Surgery, Pathology, and Biomedical Sciences, University of North Dakota, Grand Forks, ND, USA
| | - Marc D Basson
- Departments of Surgery, Pathology, and Biomedical Sciences, University of North Dakota, Grand Forks, ND, USA
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Vomhof-DeKrey EE, Lee J, Lansing J, Brown C, Darland D, Basson MD. Schlafen 3 knockout mice display gender-specific differences in weight gain, food efficiency, and expression of markers of intestinal epithelial differentiation, metabolism, and immune cell function. PLoS One 2019; 14:e0219267. [PMID: 31260507 PMCID: PMC6602453 DOI: 10.1371/journal.pone.0219267] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 06/19/2019] [Indexed: 12/15/2022] Open
Abstract
Self-renewal and differentiation are essential for intestinal epithelium absorptive functioning and adaptation to pathological states such as short gut syndrome, ulcers, and inflammatory bowel disease. The rodent Slfn3 and its human analog Slfn12 are critical in regulating intestinal epithelial differentiation. We sought to characterize intestinal function in Slfn3 knockout (KO) mice. Male and female pair-fed Slfn3KO mice gained less weight with decreased food efficiency than wild type (WT) mice, with more pronounced effects in females. RNA sequencing performed on intestinal mucosa of Slfn3KO and WT mice showed gene ontology decreases in cell adhesion molecule signaling, tumor necrosis factor receptor binding, and adaptive immune cell proliferation/functioning genes in Slfn3KO mice, with greater effects in females. qPCR analysis of fatty acid metabolism genes, Pla2g4c, Pla2g2f, and Cyp3c55 revealed an increase in Pla2g4c, and a decrease in Pla2g2f in Slfn3KO females. Additionally, adipogenesis genes, Fabp4 and Lpl were decreased and ketogenesis gene Hmgcs2 was increased in female Slfn3KO mice. Sequencing did not reveal significant changes in differentiation markers, so qPCR was utilized. Slfn3KO tended to have decreased expression of intestinal differentiation markers sucrase isomaltase, dipeptidyl peptidase 4, villin 1, and glucose transporter 1 (Glut1) vs. WT males, although these trends did not achieve statistical significance unless data from several markers was pooled. Differentiation markers, Glut2 and sodium-glucose transporter 1 (SGLT1), did show statistically significant sex-dependent differences. Glut2 mRNA was reduced in Slfn3KO females, while SGLT1 increased in Slfn3KO males. Notch2 and Cdx2 were only increased in female Slfn3KO mice. Although Slfn3KO mice gain less weight and decreased food efficiency, their biochemical phenotype is more subtle and suggests a complex interplay between gender effects, Slfn3, and another regulatory pathway yet to be identified that compensates for the chronic loss of Slfn3.
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Affiliation(s)
- Emilie E. Vomhof-DeKrey
- Departments of Surgery, Pathology, and Biomedical Sciences, University of North Dakota School of Medicine and the Health Sciences, Grand Forks, ND, United States of America
| | - Jun Lee
- Departments of Surgery, Pathology, and Biomedical Sciences, University of North Dakota School of Medicine and the Health Sciences, Grand Forks, ND, United States of America
| | - Jack Lansing
- Departments of Surgery, Pathology, and Biomedical Sciences, University of North Dakota School of Medicine and the Health Sciences, Grand Forks, ND, United States of America
| | - Chris Brown
- Departments of Surgery, Pathology, and Biomedical Sciences, University of North Dakota School of Medicine and the Health Sciences, Grand Forks, ND, United States of America
| | - Diane Darland
- Department of Biology, University of North Dakota School of Medicine and Health Sciences, Grand Forks, ND, United States of America
| | - Marc D. Basson
- Departments of Surgery, Pathology, and Biomedical Sciences, University of North Dakota School of Medicine and the Health Sciences, Grand Forks, ND, United States of America
- * E-mail:
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22
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Schlafen-11 expression is associated with immune signatures and basal-like phenotype in breast cancer. Breast Cancer Res Treat 2019; 177:335-343. [PMID: 31222709 DOI: 10.1007/s10549-019-05313-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 06/05/2019] [Indexed: 12/21/2022]
Abstract
PURPOSE Breast cancer (BC) is a heterogeneous disorder, with variable response to systemic chemotherapy. Likewise, BC shows highly complex immune activation patterns, only in part reflecting classical histopathological subtyping. Schlafen-11 (SLFN11) is a nuclear protein we independently described as causal factor of sensitivity to DNA damaging agents (DDA) in cancer cell line models. SLFN11 has been reported as a predictive biomarker for DDA and PARP inhibitors in human neoplasms. SLFN11 has been implicated in several immune processes such as thymocyte maturation and antiviral response through the activation of interferon signaling pathway, suggesting its potential relevance as a link between immunity and cancer. In the present work, we investigated the transcriptional landscape of SLFN11, its potential prognostic value, and the clinico-pathological associations with its variability in BC. METHODS We assessed SLFN11 determinants in a gene expression meta-set of 5061 breast cancer patients annotated with clinical data and multigene signatures. RESULTS We found that 537 transcripts are highly correlated with SLFN11, identifying "immune response", "lymphocyte activation", and "T cell activation" as top Gene Ontology processes. We established a strong association of SLFN11 with stromal signatures of basal-like phenotype and response to chemotherapy in estrogen receptor negative (ER-) BC. We identified a distinct subgroup of patients, characterized by high SLFN11 levels, ER- status, basal-like phenotype, immune activation, and younger age. Finally, we observed an independent positive predictive role for SLFN11 in BC. CONCLUSIONS Our findings are suggestive of a relevant role for SLFN11 in BC and its immune and molecular variability.
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Nakagawa K, Matsuki T, Zhao L, Kuniyoshi K, Tanaka H, Ebina I, Yoshida KJ, Nabeshima H, Fukushima K, Kanemaru H, Yamane F, Kawasaki T, Machida T, Naito H, Takakura N, Satoh T, Akira S. Schlafen-8 is essential for lymphatic endothelial cell activation in experimental autoimmune encephalomyelitis. Int Immunol 2019. [PMID: 29528433 DOI: 10.1093/intimm/dxx079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Schlafen-8 (Slfn8) is a member of the Schlafen family of proteins, which harbor helicase domains and are induced by LPS and interferons. It has been reported that the Schlafen family are involved in various cellular functions, including proliferation, differentiation and regulation of virus replication. Slfn8 has been implicated in T-cell differentiation in the thymus. However, the roles of Slfn8 in the immune system remains unclear. In this study, we generated Slfn8 knockout mice (Slfn8-/-) and investigated the immunological role of Slfn8 using the T-cell-mediated autoimmune model experimental autoimmune encephalomyelitis (EAE). We found that the clinical score was reduced in Slfn8-/- mice. IL-6 and IL-17A cytokine production, which are associated with EAE onset and progression, were decreased in the lymph nodes of Slfn8-/- mice. Immune cell populations in Slfn8-/- mice, including macrophages, neutrophils, T cells and B cells, did not reveal significant differences compared with wild-type mice. In vitro activation of Slfn8-/- T cells in response to TCR stimulation also did not reveal significant differences. To confirm the involvement of non-hematopoietic cells, we isolated CD45- CD31+ endothelial cells and CD45-CD31- gp38+ fibroblastic reticular cells by FACS sorting. We showed that the levels of IL-6 and Slfn8 mRNA in CD45- CD31+ endothelial cells were increased after EAE induction. In contrast, the level of IL-6 mRNA after EAE induction was markedly decreased in CD31+ endothelial cells from Slfn8-/- mice. These results indicate that Slfn8 may play a role in EAE by regulating inflammation in endothelial cells.
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Affiliation(s)
- Katsuhiro Nakagawa
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Takanori Matsuki
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Liang Zhao
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Kanako Kuniyoshi
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Hiroki Tanaka
- Laboratory of Host Defense, World Premier Institute Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
| | - Isao Ebina
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Kenta J Yoshida
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Hiroshi Nabeshima
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Kiyoharu Fukushima
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Hisashi Kanemaru
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Fumihiro Yamane
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Takahiro Kawasaki
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Tomohisa Machida
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Hisamichi Naito
- Department of Signal Transduction, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Nobuyuki Takakura
- Department of Signal Transduction, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan
| | - Takashi Satoh
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan.,Laboratory of Host Defense, World Premier Institute Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
| | - Shizuo Akira
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan.,Laboratory of Host Defense, World Premier Institute Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
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Slfn2 Regulates Type I Interferon Responses by Modulating the NF-κB Pathway. Mol Cell Biol 2018; 38:MCB.00053-18. [PMID: 29866656 DOI: 10.1128/mcb.00053-18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 05/23/2018] [Indexed: 11/20/2022] Open
Abstract
Although members of the Slfn family have been implicated in the regulation of type I interferon (IFN) responses, the mechanisms by which they mediate their effects remain unknown. In the present study, we provide evidence that targeted disruption of the Slfn2 gene leads to increased transcription of IFN-stimulated genes (ISGs) and enhanced type I IFN-mediated antiviral responses. We demonstrate that Slfn2 interacts with protein phosphatase 6 regulatory subunit 1 (PPP6R1), leading to reduced type I IFN-induced activation of nuclear factor kappa B (NF-κB) signaling, resulting in reduced expression of ISGs. Altogether, these data suggest a novel mechanism by which Slfn2 controls ISG expression and provide evidence for a critical role for Slfn2 in the regulation of IFN-mediated biological responses.
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25
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Jang S, Ryu SM, Lee J, Lee H, Hong SH, Ha KS, Park WS, Han ET, Yang SR. Bleomycin Inhibits Proliferation via Schlafen-Mediated Cell Cycle Arrest in Mouse Alveolar Epithelial Cells. Tuberc Respir Dis (Seoul) 2018; 82:133-142. [PMID: 29926548 PMCID: PMC6435923 DOI: 10.4046/trd.2017.0124] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 03/20/2018] [Accepted: 04/30/2018] [Indexed: 12/21/2022] Open
Abstract
Background Idiopathic pulmonary fibrosis involves irreversible alveolar destruction. Although alveolar epithelial type II cells are key functional participants within the lung parenchyma, how epithelial cells are affected upon bleomycin (BLM) exposure remains unknown. In this study, we determined whether BLM could induce cell cycle arrest via regulation of Schlafen (SLFN) family genes, a group of cell cycle regulators known to mediate growth-inhibitory responses and apoptosis in alveolar epithelial type II cells. Methods Mouse AE II cell line MLE-12 were exposed to 1–10 µg/mL BLM and 0.01–100 µM baicalein (Bai), a G1/G2 cell cycle inhibitor, for 24 hours. Cell viability and levels of pro-inflammatory cytokines were analyzed by MTT and enzyme-linked immunosorbent assay, respectively. Apoptosis-related gene expression was evaluated by quantitative real-time reverse transcription-polymerase chain reaction (qRT-PCR). Cellular morphology was determined after DAPI and Hoechst 33258 staining. To verify cell cycle arrest, propidium iodide (PI) staining was performed for MLE-12 after exposure to BLM. Results BLM decreased the proliferation of MLE-12 cells. However, it significantly increased expression levels of interleukin 6, tumor necrosis factor α, and transforming growth factor β1. Based on Hoechst 33258 staining, BLM induced condensation of nuclear and fragmentation. Based on DAPI and PI staining, BLM significantly increased the size of nuclei and induced G2/M phase cell cycle arrest. Results of qRT-PCR analysis revealed that BLM increased mRNA levels of BAX but decreased those of Bcl2. In addition, BLM/Bai increased mRNA levels of p53, p21, SLFN1, 2, 4 of Schlafen family. Conclusion BLM exposure affects pulmonary epithelial type II cells, resulting in decreased proliferation possibly through apoptotic and cell cycle arrest associated signaling.
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Affiliation(s)
- Soojin Jang
- Department of Thoracic and Cardiovascular Surgery, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Se Min Ryu
- Department of Thoracic and Cardiovascular Surgery, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Jooyeon Lee
- Department of Thoracic and Cardiovascular Surgery, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Hanbyeol Lee
- Department of Thoracic and Cardiovascular Surgery, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Seok Ho Hong
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Kwon Soo Ha
- Department of Molecular and Cellular Biochemistry, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Won Sun Park
- Department of Physiology, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Eun Taek Han
- Department of Medical Environmental Biology and Tropical Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Se Ran Yang
- Department of Thoracic and Cardiovascular Surgery, Kangwon National University School of Medicine, Chuncheon, Korea.
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Structure of Schlafen13 reveals a new class of tRNA/rRNA- targeting RNase engaged in translational control. Nat Commun 2018; 9:1165. [PMID: 29563550 PMCID: PMC5862951 DOI: 10.1038/s41467-018-03544-x] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 02/20/2018] [Indexed: 01/07/2023] Open
Abstract
Cleavage of transfer (t)RNA and ribosomal (r)RNA are critical and conserved steps of translational control for cells to overcome varied environmental stresses. However, enzymes that are responsible for this event have not been fully identified in high eukaryotes. Here, we report a mammalian tRNA/rRNA-targeting endoribonuclease: SLFN13, a member of the Schlafen family. Structural study reveals a unique pseudo-dimeric U-pillow-shaped architecture of the SLFN13 N'-domain that may clamp base-paired RNAs. SLFN13 is able to digest tRNAs and rRNAs in vitro, and the endonucleolytic cleavage dissevers 11 nucleotides from the 3'-terminus of tRNA at the acceptor stem. The cytoplasmically localised SLFN13 inhibits protein synthesis in 293T cells. Moreover, SLFN13 restricts HIV replication in a nucleolytic activity-dependent manner. According to these observations, we term SLFN13 RNase S13. Our study provides insights into the modulation of translational machinery in high eukaryotes, and sheds light on the functional mechanisms of the Schlafen family.
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Seong RK, Seo SW, Kim JA, Fletcher SJ, Morgan NV, Kumar M, Choi YK, Shin OS. Schlafen 14 (SLFN14) is a novel antiviral factor involved in the control of viral replication. Immunobiology 2017; 222:979-988. [PMID: 28734654 DOI: 10.1016/j.imbio.2017.07.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/24/2017] [Accepted: 07/10/2017] [Indexed: 12/21/2022]
Abstract
Schlafen (SLFN) proteins have been suggested to play important functions in cell proliferation and immune cell development. In this study, we determined the antiviral activities of putative RNA-helicase domain-containing SLFN14. Murine SLFN14 expression was specifically induced by TLR3-mediated pathways and type I interferon (IFN) in RAW264.7 mouse macrophages. To examine the role of SLFN during viral infection, cells were infected with either wild-type PR8 or delNS1/PR8 virus. SLFN14 expression was specifically induced following influenza virus infection. Overexpression of SLFN14 in A549 cells reduced viral replication, whereas knockdown of SLFN14 in RAW264.7 cells enhanced viral titers. Furthermore, SLFN14 promoted the delay in viral NP translocation from cytoplasm to nucleus and enhanced RIG-I-mediated IFN-β signaling. In addition, SLFN14 overexpression promoted antiviral activity against varicella zoster virus (VZV), a DNA virus. In conclusion, our data suggest that SLFN14 is a novel antiviral factor for both DNA and RNA viruses.
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Affiliation(s)
- Rak-Kyun Seong
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Seong-Wook Seo
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Ji-Ae Kim
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Sarah J Fletcher
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Neil V Morgan
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Mukesh Kumar
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, Pacific Center for Emerging Infectious Diseases Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, USA
| | - Young-Ki Choi
- College of Medicine and Medical Research Institute, Chungbuk National University, Chungdae-ro 1, Seowon-Ku, Cheongju, Republic of Korea
| | - Ok Sarah Shin
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul, Republic of Korea.
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Liu F, Zhou P, Wang Q, Zhang M, Li D. The Schlafen family: complex roles in different cell types and virus replication. Cell Biol Int 2017; 42:2-8. [PMID: 28460425 DOI: 10.1002/cbin.10778] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 04/23/2017] [Indexed: 12/28/2022]
Abstract
The Schlafen (slfn) gene family members express broadly, but the research has mainly focused on human slfn (h-slfn) and mouse slfn (m-slfn). The slfn members can be divided into three groups, and each group has its own characteristics and functions. Although the effects of slfns are still poorly understood, it has been confirmed that slfns are involved in the defense of immune system and regulate immune cells' proliferation and differentiation. In some malignant tumors, the slfn proteins can inhibit the growth and invasion of cancer cells, promote cancer cells sensibility to chemotherapeutics, and can be a promising new therapeutic target. In addition, the slfn proteins also disturb replication and virulence of viruses. In this review, we summarize the characteristics of the Schlafen family's structures and functions with the aim to achieve a more comprehensive understanding of slfns.
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Affiliation(s)
- Furao Liu
- Department of Oncology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Pingting Zhou
- Department of Oncology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Qian Wang
- Department of Oncology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Meichao Zhang
- Department of Oncology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Dong Li
- Department of Oncology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Kroczynska B, Blyth GT, Rafidi RL, Majchrzak-Kita B, Xu L, Saleiro D, Kosciuczuk EM, Jemielity J, Su B, Altman JK, Eklund EA, Fish EN, Platanias LC. Central Regulatory Role for SIN1 in Interferon γ (IFNγ) Signaling and Generation of Biological Responses. J Biol Chem 2017; 292:4743-4752. [PMID: 28174303 DOI: 10.1074/jbc.m116.757666] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 01/30/2017] [Indexed: 12/25/2022] Open
Abstract
The precise signaling mechanisms by which type II IFN receptors control expression of unique genes to induce biological responses remain to be established. We provide evidence that Sin1, a known element of the mammalian target of rapamycin complex 2 (mTORC2), is required for IFNγ-induced phosphorylation and activation of AKT and that such activation mediates downstream regulation of mTORC1 and its effectors. These events play important roles in the assembly of the eukaryotic translation initiation factor 4F (eIF4F) and mRNA translation of IFN-stimulated genes. Interestingly, IFNγ-induced tyrosine phosphorylation of STAT1 is reduced in cells with targeted disruption of Sin1, leading to decreased transcription of several IFNγ-inducible genes in an mTORC2-independent manner. Additionally, our studies establish that Sin1 is essential for generation of type II IFN-dependent antiviral effects and antiproliferative responses in normal and malignant hematopoiesis. Together, our findings establish an important role for Sin1 in both transcription and translation of IFN-stimulated genes and type II IFN-mediated biological responses, involving both mTORC2-dependent and -independent functions.
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Affiliation(s)
- Barbara Kroczynska
- From the Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Feinberg School of Medicine, and.,the Department of Radiation Oncology, Northwestern University, Chicago, Illinois 60611
| | - Gavin T Blyth
- From the Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Feinberg School of Medicine, and
| | - Robert L Rafidi
- From the Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Feinberg School of Medicine, and
| | - Beata Majchrzak-Kita
- the Toronto General Research Institute, University Health Network, and Department of Immunology, University of Toronto, Toronto, Ontario M5G 2M1, Canada
| | - Lucy Xu
- From the Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Feinberg School of Medicine, and
| | - Diana Saleiro
- From the Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Feinberg School of Medicine, and
| | - Ewa M Kosciuczuk
- From the Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Feinberg School of Medicine, and.,the Division of Hematology-Oncology, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois 60612
| | - Jacek Jemielity
- the Centre of New Technologies, University of Warsaw, 02-097 Warsaw, Poland
| | - Bing Su
- the Department of Immunobiology and the Vascular Biology and Therapeutics Program, Yale University, New Haven, Connecticut 06520, and.,the Shanghai Institute of Immunology and Department of Microbiology and Immunology, Shanghai JiaoTong University School of Medicine, Shanghai 200000, China
| | - Jessica K Altman
- From the Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Feinberg School of Medicine, and.,the Division of Hematology-Oncology, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois 60612
| | - Elizabeth A Eklund
- From the Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Feinberg School of Medicine, and.,the Division of Hematology-Oncology, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois 60612
| | - Eleanor N Fish
- the Toronto General Research Institute, University Health Network, and Department of Immunology, University of Toronto, Toronto, Ontario M5G 2M1, Canada
| | - Leonidas C Platanias
- From the Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Feinberg School of Medicine, and .,the Division of Hematology-Oncology, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois 60612
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Higgins MJ, Serrano A, Boateng KY, Parsons VA, Phuong T, Seifert A, Ricca JM, Tucker KC, Eidelman AS, Carey MA, Kurt RA. A Multifaceted Role for Myd88-Dependent Signaling in Progression of Murine Mammary Carcinoma. BREAST CANCER-BASIC AND CLINICAL RESEARCH 2016; 10:157-167. [PMID: 27812285 PMCID: PMC5084708 DOI: 10.4137/bcbcr.s40075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 07/10/2016] [Accepted: 07/12/2016] [Indexed: 02/06/2023]
Abstract
Previous data obtained in our laboratory suggested that there may be constitutive signaling through the myeloid differentiation primary response gene 88 (Myd88)-dependent signaling cascade in murine mammary carcinoma. Here, we extended these findings by showing that, in the absence of an added Toll-like receptor (TLR) agonist, the myddosome complex was preformed in 4T1 tumor cells, and that Myd88 influenced cytoplasmic extracellular signal–regulated kinase (Erk)1/Erk2 levels, nuclear levels of nuclear factor-kappaB (NFκB) and signal transducer and activator of transcription 5 (STAT5), tumor-derived chemokine (C–C motif) ligand 2 (CCL2) expression, and in vitro and in vivo tumor growth. In addition, RNA-sequencing revealed that Myd88-dependent signaling enhanced the expression of genes that could contribute to breast cancer progression and genes previously associated with poor outcome for patients with breast cancer, in addition to suppressing the expression of genes capable of inhibiting breast cancer progression. Yet, Myd88-dependent signaling in tumor cells also suppressed expression of genes that could contribute to tumor progression. Collectively, these data revealed a multifaceted role for Myd88-dependent signaling in murine mammary carcinoma.
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Affiliation(s)
- Mary J Higgins
- Department of Biology, Lafayette College, Easton, PA, USA
| | | | - Kofi Y Boateng
- Department of Biology, Lafayette College, Easton, PA, USA
| | | | - Tiffany Phuong
- Department of Biology, Lafayette College, Easton, PA, USA
| | - Alyssa Seifert
- Department of Biology, Lafayette College, Easton, PA, USA
| | - Jacob M Ricca
- Department of Biology, Lafayette College, Easton, PA, USA
| | - Kyle C Tucker
- Department of Biology, Lafayette College, Easton, PA, USA
| | | | | | - Robert A Kurt
- Department of Biology, Lafayette College, Easton, PA, USA
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Walsh MF, Hermann R, Lee JH, Chaturvedi L, Basson MD. Schlafen 3 Mediates the Differentiating Effects of Cdx2 in Rat IEC-Cdx2L1 Enterocytes. J INVEST SURG 2016; 28:202-7. [PMID: 26268420 DOI: 10.3109/08941939.2015.1005780] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
AIM Mature, differentiated enterocytes are essential for normal gut function and critical to recovery from pathological conditions. Little is known about the factors that regulate intestinal epithelial cell differentiation in the adult intestine. The transcription factor, Cdx2, involved in enterocytic differentiation, remains expressed in the adult. Since we have implicated Slfn3 in differentiation in vivo and in vitro, we examined whether it also mediated differentiation in the IEC-Cdx2-L1 cell model of differentiation. MATERIALS AND METHODS IEC-Cdx2-L1 cells, permanently transfected with Cdx2 under the control of isopropyl-β-D-thiogalactoside (IPTG), were stimulated to differentiate by 16-day exposure to IPTG. Transcript levels of Cdx2, Slfn 3, and villin were determined by quantitative reverse transcriptase-polymerase chain reaction of mRNA isolated from IPTG-treated and control cells. Slfn3 expression was lowered with specific siRNA to investigate the role of Slfn3 in Cdx2-driven villin expression in IPTG-differentiated cells. RESULTS Slfn3 and villin expression were significantly greater in IPTG-treated cells. Slfn3 siRNA lowered Slfn3 expression and abolished the IPTG-induced rise in villin expression (p < .05 by ANOVA); Cdx2 expression was unaffected by Slfn3 siRNA. DISCUSSION The data indicate that the presence of Slfn3 is required for Cdx2 to induce villin expression, and thus differentiation. However, Slfn3 must also promote differentiation of Cdx2 independently since IEC-6 cells that do not normally express Cdx2 can be differentiated by a variety of Slfn3-dependent mechanisms.
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Affiliation(s)
- Mary F Walsh
- Department of Surgery, College of Human Medicine, Michigan State University, East Lansing, Michigan, USA
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Lin YZ, Sun LK, Zhu DT, Hu Z, Wang XF, Du C, Wang YH, Wang XJ, Zhou JH. Equine schlafen 11 restricts the production of equine infectious anemia virus via a codon usage-dependent mechanism. Virology 2016; 495:112-21. [PMID: 27200480 DOI: 10.1016/j.virol.2016.04.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 04/22/2016] [Accepted: 04/23/2016] [Indexed: 12/21/2022]
Abstract
Human schlafen11 is a novel restriction factor for HIV-1 based on bias regarding relative synonymous codon usage (RSCU). Here, we report the cloning of equine schlafen11 (eSLFN11) and the characteristics of its role in restricting the production of equine infectious anemia virus (EIAV), a retrovirus similar to HIV-1. Overexpression of eSLFN11 inhibited EIAV replication, whereas knockdown of endogenous eSLFN11 by siRNA enhanced the release of EIAV from its principal target cell. Notably, although eSLFN11 significantly suppressed expression of viral Gag protein and EIAV release into the culture medium, the levels of intracellular viral early gene proteins Tat and Rev and viral genomic RNA were unaffected. Coincidently, similar altered patterns of codon usage bias were observed for both the early and late genes of EIAV. Therefore, our data suggest that eSLFN11 restricts EIAV production by impairing viral mRNA translation via a mechanism that is similar to that employed by hSLFN11 for HIV-1.
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Affiliation(s)
- Yue-Zhi Lin
- Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Science, Harbin, China.
| | - Liu-Ke Sun
- Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Science, Harbin, China.
| | - Dan-Tong Zhu
- Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Science, Harbin, China; College of Wildlife Resources, Northeast Forestry University, Harbin, China.
| | - Zhe Hu
- Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Science, Harbin, China.
| | - Xue-Feng Wang
- Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Science, Harbin, China.
| | - Cheng Du
- Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Science, Harbin, China.
| | - Yu-Hong Wang
- Department of Geriatrics And Gerontology, First Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Xiao-Jun Wang
- Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Science, Harbin, China.
| | - Jian-Hua Zhou
- Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Science, Harbin, China.
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Abstract
Schlafen-11 (SLFN11) showed a highly significant positive correlation with the response of topoisomerase inhibitors in cancer cell lines derived from prostate, lung, etc. However, this finding has not been validated in colorectal cancers (CRCs). Although irinotecan (CPT-11), a topoisomerase inhibitor, is one of the most important drugs in the treatment of advanced and/or metastatic CRC, resistance is a critical drawback to its clinical effectiveness. The present study aimed to investigate the mechanism of SLFN11 in the response of CRC cell lines to SN-38 (an active CPT-11 metabolite) treatment. Western blotting was used to measure protein expression levels of SLFN11 in human CRC cell lines. Then, SLFN11 expression was modulated by transfecting human CRC cell lines with vectors carrying the SLFN11 gene or specific SLFN11 small interfering RNAs. The effects of SN-38 treatment on CRC cells with different SLFN11 expression levels were detected, including inhibition of cell growth, induction of apoptosis, and cell cycle arrest. This study showed that SLFN11 expression varied between the CRC cell lines and high-level SLFN11 expression promoted SN-38-induced antiproliferative activity, apoptosis, and cell cycle arrest. Our results suggest that SLFN11 plays a key role in cell cycle arrest and/or induction of apoptosis in response to exogenous SN-38-induced DNA damage and might be used as a new predictive biomarker for CRC treatment.
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Alveolar Type II Epithelial Cells Contribute to the Anti-Influenza A Virus Response in the Lung by Integrating Pathogen- and Microenvironment-Derived Signals. mBio 2016; 7:mBio.00276-16. [PMID: 27143386 PMCID: PMC4959657 DOI: 10.1128/mbio.00276-16] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Influenza A virus (IAV) periodically causes substantial morbidity and mortality in the human population. In the lower lung, the primary targets for IAV replication are type II alveolar epithelial cells (AECII), which are increasingly recognized for their immunological potential. So far, little is known about their reaction to IAV and their contribution to respiratory antiviral immunity in vivo. Therefore, we characterized the AECII response during early IAV infection by analyzing transcriptional regulation in cells sorted from the lungs of infected mice. We detected rapid and extensive regulation of gene expression in AECII following in vivo IAV infection. The comparison to transcriptional regulation in lung tissue revealed a strong contribution of AECII to the respiratory response. IAV infection triggered the expression of a plethora of antiviral factors and immune mediators in AECII with a high prevalence for interferon-stimulated genes. Functional pathway analyses revealed high activity in pathogen recognition, immune cell recruitment, and antigen presentation. Ultimately, our analyses of transcriptional regulation in AECII and lung tissue as well as interferon I/III levels and cell recruitment indicated AECII to integrate signals provided by direct pathogen recognition and surrounding cells. Ex vivo analysis of AECII proved a powerful tool to increase our understanding of their role in respiratory immune responses, and our results clearly show that AECII need to be considered a part of the surveillance and effector system of the lower respiratory tract. In order to confront the health hazard posed by IAV, we need to complete our understanding of its pathogenesis. AECII are primary targets for IAV replication in the lung, and while we are beginning to understand their importance for respiratory immunity, the in vivo AECII response during IAV infection has not been analyzed. In contrast to studies addressing the response of AECII infected with IAV ex vivo, we have performed detailed gene transcriptional profiling of AECII isolated from the lungs of infected mice. Thereby, we have identified an exceptionally rapid and versatile response to IAV infection that is shaped by pathogen-derived as well as microenvironment-derived signals and aims at the induction of antiviral measures and the recruitment and activation of immune cells. In conclusion, our study presents AECII as active players in antiviral defense in vivo that need to be considered part of the sentinel and effector immune system of the lung.
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Puck A, Aigner R, Modak M, Cejka P, Blaas D, Stöckl J. Expression and regulation of Schlafen (SLFN) family members in primary human monocytes, monocyte-derived dendritic cells and T cells. RESULTS IN IMMUNOLOGY 2015; 5:23-32. [PMID: 26623250 PMCID: PMC4625362 DOI: 10.1016/j.rinim.2015.10.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 08/26/2015] [Accepted: 10/14/2015] [Indexed: 12/03/2022]
Abstract
Schlafen (SLFN/Slfn) family members have been investigated for their involvement in fundamental cellular processes including growth regulation, differentiation and control of viral replication. However, most research has been focused on the characterization of Slfns within the murine system or in human cell lines. Since little is known about SLFNs in primary human immune cells, we set out to analyze the expression and regulation of the six human SLFN genes in monocytes, monocyte-derived dendritic cells (moDCs) and T cells. Comparison of SLFN gene expression across these three cell types showed high mRNA expression of SLFN11 in monocytes and moDCs and high SLFN5 expression in T cells, indicating functional importance within these cell types. Differentiation of monocytes to moDCs leads to the gradual upregulation of SLFN12L and SLFN13 while SLFN12 levels were decreased by differentiation stimuli. Stimulation of moDCs via human rhinovirus, lipopolysaccharide, or IFN-α lead to strong upregulation of SLFN gene expression, while peptidoglycan poorly stimulated regulation of both SLFNs and the classical interferon-stimulated gene MxA. T cell activation was found to downregulate the expression of SLFN5, SLFN12 and SLFN12L, which was reversible upon addition of exogenous IFN-α. In conclusion, we demonstrate, that SLFN gene upregulation is mainly dependent on autocrine type I interferon signaling in primary human immune cells. Rapid decrease of SLFN expression levels following T cell receptor stimulation indicates a role of SLFNs in the regulation of human T cell quiescence.
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Affiliation(s)
- Alexander Puck
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Regina Aigner
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Madhura Modak
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Petra Cejka
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Dieter Blaas
- Department of Medical Biochemistry, Max F. Perutz Laboratories, Vienna Biocenter, Medical University of Vienna, Vienna, Austria
| | - Johannes Stöckl
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
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Digital gene expression analysis of transcriptomes in lipopolysaccharide-induced acute respiratory distress syndrome. Clin Chim Acta 2015. [PMID: 26216187 DOI: 10.1016/j.cca.2015.07.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND The mortality from acute respiratory distress syndrome (ARDS) is high, and its exact pathogenesis remains unclear, which forms a major obstacle for prevention and treatment of this disease. In the present study, we used digital gene expression (DGE) to detect the differentially expressed genes of the lung at 4h after lipopolysaccharide (LPS) exposure in a mouse model. METHODS Mice were treated with LPS or control saline by intratracheal instillation for 4h, and their lung tissues were collected for DGE analysis. We used a false discovery rate ≤0.001 and an absolute value of the log2 ratio≥1 as the thresholds for judging the significance of any difference in gene expression between the two members of each pair of mice. RESULTS We obtained 3,387,842 clean tags (i.e., after filtering to remove potentially erroneous tags) and about 84,513 corresponding distinct clean tags (i.e., types of tag). Approximately 91.20% of the clean tags could be mapped, and 82.71% could be uniquely mapped, to the reference tags, and 3.82% were unknown tags. At least 2200 differentially expressed genes were identified and analyzed for enrichment of Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway. Twenty genes with the greatest difference in expression levels between the two members of every pair of mice were chosen. The majority of these genes are involved in signaling transduction, molecular adhesion, and metabolic pathways. CONCLUSIONS Using the powerful technology of DGE, we present, to our knowledge, the first in-depth transcriptomic analysis of mouse lungs after LPS exposure. We found some differentially expressed genes that might play important roles in the pathogenesis of ARDS.
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Human Schlafen 5 (SLFN5) Is a Regulator of Motility and Invasiveness of Renal Cell Carcinoma Cells. Mol Cell Biol 2015; 35:2684-98. [PMID: 26012550 DOI: 10.1128/mcb.00019-15] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 05/19/2015] [Indexed: 12/20/2022] Open
Abstract
We provide evidence that human SLFN5, an interferon (IFN)-inducible member of the Schlafen (SLFN) family of proteins, exhibits key roles in controlling motility and invasiveness of renal cell carcinoma (RCC) cells. Our studies define the mechanism by which this occurs, demonstrating that SLFN5 negatively controls expression of the matrix metalloproteinase 1 gene (MMP-1), MMP-13, and several other genes involved in the control of malignant cell motility. Importantly, our data establish that SLFN5 expression correlates with a better overall survival in a large cohort of patients with RCC. The inverse relationship between SLFN5 expression and RCC aggressiveness raises the possibility of developing unique therapeutic approaches in the treatment of RCC, by modulating SLFN5 expression.
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Talpaz M, Mercer J, Hehlmann R. The interferon-alpha revival in CML. Ann Hematol 2015; 94 Suppl 2:S195-207. [PMID: 25814086 DOI: 10.1007/s00277-015-2326-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 01/29/2015] [Indexed: 01/22/2023]
Abstract
Interferon-alpha (IFNα) was once the standard of frontline treatment for chronic myeloid leukemia (CML). Its pleiotropic mechanism of action in CML includes immune activation and specific targeting of CML stem cells. Early studies of IFNα in CML demonstrated that patients in chronic phase could attain extremely stable remissions, which correlated with long-term survival. Some patients even sustained their remission after discontinuing therapy, but the mechanism underlying this phenomenon is not well understood. Today, BCR-ABL tyrosine kinase inhibitors (TKIs), such as imatinib, induce remarkable responses in CML patients and have become the mainstay of CML therapy. Although TKIs target the pathogenic BCR-ABL protein in CML, they cannot fully eradicate CML stem cells. Some of the clinical trials testing IFNα plus imatinib combination therapy suggest that addition of IFNα increases the speed and rate of responses with imatinib therapy. However, the undesirable side effects of IFNα can make this therapy difficult to deliver, and the optimal therapeutic window for using IFNα in combination therapy is unknown. Further studies are needed to clarify the best niche for IFNα use in CML.
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Affiliation(s)
- Moshe Talpaz
- Department of Internal Medicine, Division of Hematology Oncology, University of Michigan Comprehensive Cancer Center, 1500 E. Medical Center Drive, Comprehensive Cancer Center Room 4302, Ann Arbor, MI, 48109-5936, USA,
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Kuang CY, Yang TH, Zhang Y, Zhang L, Wu Q. Schlafen 1 inhibits the proliferation and tube formation of endothelial progenitor cells. PLoS One 2014; 9:e109711. [PMID: 25329797 PMCID: PMC4199616 DOI: 10.1371/journal.pone.0109711] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 08/12/2014] [Indexed: 11/18/2022] Open
Abstract
Endothelial progenitor cells (EPCs) are the major source of cells that restore the endothelium during reendothelialization. This study was designed to investigate whether Schlafen 1 (Slfn1) has an effect on the proliferation and tube formation of EPCs in vivo. Slfn1 was expressed in rat EPCs. The overexpression of Slfn1 suppressed the proliferation and tube formation of EPCs; conversely, the knockdown of Slfn1 by shRNA promoted the proliferation and tube formation of EPCs. Furthermore, when Slfn1 was overexpressed, the EPCs were arrested in the G1 phase of the cell cycle. In contrast, when Slfn1 was knocked down, the EPCs progressed into the S phase of the cell cycle. Additionally, the overexpression of Slfn1 decreased the expression of Cyclin D1, whereas the knockdown of Slfn1 increased the expression of Cyclin D1; these findings suggest that Cyclin D1 is downstream of Slfn1 in Slfn1-mediated EPC proliferation. Taken together, these results indicate a key role for Slfn1 in the regulation of EPC biological behavior, which may provide a new target for the use of EPCs during reendothelialization.
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Affiliation(s)
- Chun-yan Kuang
- Department of Cardiovascular Diseases, The People’s Hospital of Guizhou Province, Nanming District, Guiyang, People’s Republic of China
| | - Tian-he Yang
- Department of Cardiovascular Diseases, The People’s Hospital of Guizhou Province, Nanming District, Guiyang, People’s Republic of China
| | - Yang Zhang
- Department of Cardiovascular Diseases, The People’s Hospital of Guizhou Province, Nanming District, Guiyang, People’s Republic of China
| | - Lu Zhang
- Medical examination center, The People’s Hospital of Guizhou Province, Nanming District, Guiyang, People's Republic of China
- * E-mail: (QW); (LZ)
| | - Qiang Wu
- Department of Cardiovascular Diseases, The People’s Hospital of Guizhou Province, Nanming District, Guiyang, People’s Republic of China
- * E-mail: (QW); (LZ)
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Fish EN, Platanias LC. Interferon receptor signaling in malignancy: a network of cellular pathways defining biological outcomes. Mol Cancer Res 2014; 12:1691-703. [PMID: 25217450 DOI: 10.1158/1541-7786.mcr-14-0450] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
IFNs are cytokines with important antiproliferative activity and exhibit key roles in immune surveillance against malignancies. Early work initiated over three decades ago led to the discovery of IFN receptor activated Jak-Stat pathways and provided important insights into mechanisms for transcriptional activation of IFN-stimulated genes (ISG) that mediate IFN biologic responses. Since then, additional evidence has established critical roles for other receptor-activated signaling pathways in the induction of IFN activities. These include MAPK pathways, mTOR cascades, and PKC pathways. In addition, specific miRNAs appear to play a significant role in the regulation of IFN signaling responses. This review focuses on the emerging evidence for a model in which IFNs share signaling elements and pathways with growth factors and tumorigenic signals but engage them in a distinctive manner to mediate antiproliferative and antiviral responses.
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Affiliation(s)
- Eleanor N Fish
- Toronto General Research Institute, University Health Network and Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Leonidas C Platanias
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Northwestern University Medical School and Jesse Brown VA Medical Center, Chicago, Illinois.
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Liu L, Cui J, Yang Q, Jia C, Xiong M, Ning B, Du X, Wang P, Yu X, Li L, Wang W, Chen Y, Zhang T. Apocynin attenuates isoproterenol-induced myocardial injury and fibrogenesis. Biochem Biophys Res Commun 2014; 449:55-61. [PMID: 24814704 DOI: 10.1016/j.bbrc.2014.04.157] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 04/29/2014] [Indexed: 01/19/2023]
Abstract
Oxidative stress is mechanistically implicated in the pathogenesis of myocardial injury and the subsequent fibrogenic tissue remodeling. Therapies targeting oxidative stress in the process of myocardial fibrogenesis are still lacking and thus remain as an active research area in myocardial injury management. The current study evaluated the effects of a NADPH oxidase inhibitor, apocynin, on the production of reactive oxygen species and the development of myocardial fibrogenesis in isoproterenol (ISO)-induced myocardial injury mouse model. The results revealed a remarkable effect of apocynin on attenuating the development of myocardial necrotic lesions, inflammation and fibrogenesis. Additionally, the protective effects of apocynin against myocardial injuries were associated with suppressed expression of an array of genes implicated in inflammatory and fibrogenic responses. Our study thus provided for the first time the histopathological and molecular evidence supporting the therapeutic value of apocynin against the development of myocardial injuries, in particular, myocardial fibrogenesis, which will benefit the mechanism-based drug development targeting oxidative stress in preventing and/or treating related myocardial disorders.
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Affiliation(s)
- Li Liu
- Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Jingang Cui
- Clinical Research Institute of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Qinbo Yang
- Clinical Research Institute of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Chenglin Jia
- Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Minqi Xiong
- Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Bingbing Ning
- Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Xiaoye Du
- Clinical Research Institute of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Peiwei Wang
- Clinical Research Institute of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Xintong Yu
- Clinical Research Institute of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Li Li
- Clinical Research Institute of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Wenjian Wang
- Clinical Research Institute of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Yu Chen
- Clinical Research Institute of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China.
| | - Teng Zhang
- Clinical Research Institute of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China.
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Kovalenko PL, Basson MD. Schlafen 12 expression modulates prostate cancer cell differentiation. J Surg Res 2014; 190:177-84. [PMID: 24768141 DOI: 10.1016/j.jss.2014.03.069] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 03/14/2014] [Accepted: 03/21/2014] [Indexed: 12/17/2022]
Abstract
BACKGROUND Schlafen proteins have previously been linked to leukocyte and intestinal epithelial differentiation. We hypothesized that Schlafen 12 (SLFN12) overexpression in human prostate epithelial cells would modulate expression of prostate-specific antigen (PSA) and dipeptidyl peptidase 4 (DPP4), markers of prostatic epithelial differentiation. MATERIALS AND METHODS Differentiation of the human prostate cancer cell lines LNCaP and PC-3 was compared after infection with an adenoviral vector coding for SLFN12 (Ad-SLFN12) or green fluorescent protein (GFP) only expressing virus (control). Transcript levels of SLFN12, PSA, and DPP4 were evaluated by real-time reverse transcription PCR and protein levels by Western blotting. Because mixed lineage kinase (MLK) and one of its downstream effectors (extracellular signal-regulated kinases [ERK]) have previously been implicated in some aspects of prostate epithelial differentiation, we conducted further studies in which LNCaP cells were cotreated with dimethyl sulfoxide (control), PD98059 (ERK inhibitor), or MLK inhibitor during transfection with Ad-SLFN12 for 72 h. RESULTS Treatment of LNCaP or PC-3 cells with Ad-SLFN12 reduced PSA expression by 56.6±4.6% (P<0.05) but increased DPP4 transcript level by 4.8±1.0 fold (P<0.05) versus Ad-GFP-treated controls. Further studies in LNCaP cells showed that Ad-SLFN12 overexpression increased the ratio of the mature E-cadherin protein to its precursor protein. Furthermore, SLFN12 overexpression promoted DPP4 expression either when MLK or ERK was blocked. ERK inhibition did not reverse SLFN12-induced changes in PSA, E-cadherin, or DPP4. CONCLUSIONS SLFN12 may regulate differentiation in prostate epithelial cells, at least in part independently of ERK or MLK. Understanding how SLFN12 influences prostatic epithelial differentiation may ultimately identify targets to influence the phenotype of prostatic malignancy.
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Affiliation(s)
- Pavlo L Kovalenko
- Department of Surgery, College of Human Medicine, Michigan State University, East Lansing, Michigan
| | - Marc D Basson
- Department of Surgery, College of Human Medicine, Michigan State University, East Lansing, Michigan.
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Kroczynska B, Mehrotra S, Arslan AD, Kaur S, Platanias LC. Regulation of interferon-dependent mRNA translation of target genes. J Interferon Cytokine Res 2014; 34:289-96. [PMID: 24559173 DOI: 10.1089/jir.2013.0148] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Interferons (IFNs) are released by cells on exposure to various stimuli, including viruses, double-stranded RNA, and other cytokines and various polypeptides. These IFNs play important physiological and pathophysiological roles in humans. Many clinical studies have established activity for these cytokines in the treatment of several malignancies, viral syndromes, and autoimmune disorders. In this review, the regulatory effects of type I and II IFN receptors on the translation-initiation process mediated by mechanistic target of rapamycin (mTOR) and mitogen-activated protein kinase (MAPK) pathways and the known mechanisms of control of mRNA translation of IFN-stimulated genes are summarized and discussed.
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Affiliation(s)
- Barbara Kroczynska
- 1 Division of Hematology-Oncology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Medical School , Chicago, Illinois
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Kaur S, Kroczynska B, Sharma B, Sassano A, Arslan AD, Majchrzak-Kita B, Stein BL, McMahon B, Altman JK, Su B, Calogero RA, Fish EN, Platanias LC. Critical roles for Rictor/Sin1 complexes in interferon-dependent gene transcription and generation of antiproliferative responses. J Biol Chem 2014; 289:6581-6591. [PMID: 24469448 DOI: 10.1074/jbc.m113.537852] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
We provide evidence that type I IFN-induced STAT activation is diminished in cells with targeted disruption of the Rictor gene, whose protein product is a key element of mTOR complex 2. Our studies show that transient or stable knockdown of Rictor or Sin1 results in defects in activation of elements of the STAT pathway and reduced STAT-DNA binding complexes. This leads to decreased expression of several IFN-inducible genes that mediate important biological functions. Our studies also demonstrate that Rictor and Sin1 play essential roles in the generation of the suppressive effects of IFNα on malignant erythroid precursors from patients with myeloproliferative neoplasms. Altogether, these findings provide evidence for critical functions for Rictor/Sin1 complexes in type I IFN signaling and the generation of type I IFN antineoplastic responses.
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Affiliation(s)
- Surinder Kaur
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Department of Medicine, Northwestern University Medical School, Chicago, Illinois 60611
| | - Barbara Kroczynska
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Department of Medicine, Northwestern University Medical School, Chicago, Illinois 60611
| | - Bhumika Sharma
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Department of Medicine, Northwestern University Medical School, Chicago, Illinois 60611
| | - Antonella Sassano
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Department of Medicine, Northwestern University Medical School, Chicago, Illinois 60611
| | - Ahmet Dirim Arslan
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Department of Medicine, Northwestern University Medical School, Chicago, Illinois 60611
| | - Beata Majchrzak-Kita
- Toronto Research Institute, University Health Network and Department of Immunology, University of Toronto, Toronto, Ontario M5S 2J7, Canada
| | - Brady L Stein
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Department of Medicine, Northwestern University Medical School, Chicago, Illinois 60611
| | - Brandon McMahon
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Department of Medicine, Northwestern University Medical School, Chicago, Illinois 60611
| | - Jessica K Altman
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Department of Medicine, Northwestern University Medical School, Chicago, Illinois 60611; Division of Hematology-Oncology, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois 60612
| | - Bing Su
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06520
| | - Raffaele A Calogero
- Department of Biotechnology and Health Sciences, University of Turin, 8 Turin, Italy
| | - Eleanor N Fish
- Toronto Research Institute, University Health Network and Department of Immunology, University of Toronto, Toronto, Ontario M5S 2J7, Canada
| | - Leonidas C Platanias
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Department of Medicine, Northwestern University Medical School, Chicago, Illinois 60611; Division of Hematology-Oncology, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois 60612.
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Inefficient type I interferon-mediated antiviral protection of primary mouse neurons is associated with the lack of apolipoprotein l9 expression. J Virol 2014; 88:3874-84. [PMID: 24453359 DOI: 10.1128/jvi.03018-13] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
UNLABELLED We examined the antiviral response promoted by type I interferons (IFN) in primary mouse neurons. IFN treatment of neuron cultures strongly upregulated the transcription of IFN-stimulated genes but conferred a surprisingly low resistance to infection by neurotropic viruses such as Theiler's murine encephalomyelitis virus (TMEV) or vesicular stomatitis virus (VSV). Response of primary mouse neurons to IFN treatment was heterogeneous, as many neurons failed to express the typical IFN response marker Mx1 after IFN treatment. This heterogeneous response of primary neurons correlated with a low level of basal expression of IFN-stimulated genes, such as Stat1, that are involved in signal transduction of the IFN response. In addition, transcriptomic analysis identified 15 IFN-responsive genes whose expression was low in IFN-treated primary neurons compared to that of primary fibroblasts derived from the same mice (Dhx58, Gvin1, Sp100, Ifi203 isoforms 1 and 2, Irgm2, Lgals3bp, Ifi205, Apol9b, Ifi204, Ifi202b, Tor3a, Slfn2, Ifi35, Lgals9). Among these genes, the gene coding for apolipoprotein L9b (Apol9b) displayed antiviral activity against Theiler's virus when overexpressed in L929 cells or in primary neurons. Accordingly, knocking down Apol9b expression in L929 cells increased viral replication. Therefore, we identified a new antiviral protein induced by interferon, ApoL9b, whose lack of expression in primary neurons likely contributes to the high sensitivity of these cells to viral infection. IMPORTANCE The type I interferon (IFN) response is an innate immune defense mechanism that is critical to contain viral infection in the host until an adaptive immune response can be mounted. Neurons are a paradigm for postmitotic, highly differentiated cells. Our data show that primary mouse neurons that are exposed to type I interferon remain surprisingly susceptible to viral infection. On one hand, the low level of basal expression of some factors in neurons might prevent a rapid response of these cells. On the other hand, some genes that are typically activated by type I interferon in other cell types are expressed at much lower levels in neurons. Among these genes is the gene encoding apolipoprotein L9, a protein that proved to have antiviral activity against the neurotropic Theiler's murine encephalomyelitis virus. Our data suggest important functional differences in the IFN response mounted by specific cell populations.
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Gig1, a novel antiviral effector involved in fish interferon response. Virology 2014; 448:322-32. [DOI: 10.1016/j.virol.2013.10.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 08/27/2013] [Accepted: 10/21/2013] [Indexed: 11/23/2022]
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Mavrommatis E, Arslan AD, Sassano A, Hua Y, Kroczynska B, Platanias LC. Expression and regulatory effects of murine Schlafen (Slfn) genes in malignant melanoma and renal cell carcinoma. J Biol Chem 2013; 288:33006-15. [PMID: 24089532 DOI: 10.1074/jbc.m113.460741] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
There is emerging evidence that the IFN-inducible family of Slfn genes and proteins play important roles in cell cycle progression and control of cellular proliferation, but the precise functional roles of different Slfn members in the regulation of tumorigenesis remain unclear. In the present study, we undertook a systematic analysis on the expression and functional relevance of different mouse Slfn genes in malignant melanoma and renal cell carcinoma cells. Our studies demonstrate that several mouse Slfn genes are up-regulated in response to IFN treatment of mouse melanoma and renal cell carcinoma cells, including Slfn1, Slfn2, Slfn4, Slfn5, and Slfn8. Our data show that Slfn2 and Slfn3 play essential roles in the control of mouse malignant melanoma cell proliferation and/or anchorage-independent growth, suggesting key and non-overlapping roles for these genes in the control of malignant melanoma tumorigenesis. In renal cell carcinoma cells, in addition to Slfn2 and Slfn3, Slfn5 also exhibits important antineoplastic effects. Altogether, our findings indicate important functions for distinct mouse Slfn genes in the control of tumorigenesis and provide evidence for differential involvement of distinct members of this gene family in controlling tumorigenesis. They also raise the potential of future therapeutic approaches involving modulation of expression of members of this family of genes in malignant melanoma and renal cell carcinoma.
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Affiliation(s)
- Evangelos Mavrommatis
- From the Division of Hematology-Oncology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Medical School, Chicago, Illinois 60611 and
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Mavrommatis E, Fish EN, Platanias LC. The schlafen family of proteins and their regulation by interferons. J Interferon Cytokine Res 2013; 33:206-10. [PMID: 23570387 DOI: 10.1089/jir.2012.0133] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The Schlafen (SLFN) family of proteins includes several mouse and human members. There is emerging evidence that members of this family of proteins are involved in important functions, such as the control of cell proliferation, induction of immune responses, and the regulation of viral replication. These proteins span across all species with great diversity, with 10 murine and 5 human isoforms. Recent work has established that mouse and human SLFN proteins are regulated by interferons (IFNs). Several Slfn genes were shown to be induced as classical interferon-stimulated genes, and emerging evidence suggests that these proteins play important roles in the growth inhibitory and antineoplastic effects of IFNs. In the current review, the known properties of mouse and human SLFNs are reviewed, and the implications of their emerging functions are discussed.
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Affiliation(s)
- Evangelos Mavrommatis
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University Medical School, Chicago, IL 60611, USA
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Mehrotra S, Sharma B, Joshi S, Kroczynska B, Majchrzak B, Stein BL, McMahon B, Altman JK, Licht JD, Baker DP, Eklund EA, Wickrema A, Verma A, Fish EN, Platanias LC. Essential role for the Mnk pathway in the inhibitory effects of type I interferons on myeloproliferative neoplasm (MPN) precursors. J Biol Chem 2013; 288:23814-22. [PMID: 23814052 DOI: 10.1074/jbc.m113.476192] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The mechanisms of generation of the antineoplastic effects of interferons (IFNs) in malignant hematopoietic cells remain to be precisely defined. We examined the activation of type I IFN-dependent signaling pathways in malignant cells transformed by Jak2V617F, a critical pathogenic mutation in myeloproliferative neoplasms (MPNs). Our studies demonstrate that during engagement of the type I IFN receptor (IFNAR), there is activation of Jak-Stat pathways and also engagement of Mnk kinases. Activation of Mnk kinases is regulated by the Mek/Erk pathway and is required for the generation of IFN-induced growth inhibitory responses, but Mnk kinase activation does not modulate IFN-regulated Jak-Stat signals. We demonstrate that for type I IFNs to exert suppressive effects in malignant hematopoietic progenitors from patients with polycythemia vera, induction of Mnk kinase activity is required, as evidenced by studies involving pharmacological inhibition of Mnk or siRNA-mediated Mnk knockdown. Altogether, these findings provide evidence for key and essential roles of the Mnk kinase pathway in the generation of the antineoplastic effects of type I IFNs in Jak2V617F-dependent MPNs.
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Affiliation(s)
- Swarna Mehrotra
- Robert H. Lurie Comprehensive Cancer Center and Division of Hematology-Oncology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
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Walsh MF, Hermann R, Sun K, Basson MD. Schlafen 3 changes during rat intestinal maturation. Am J Surg 2012; 204:598-601. [PMID: 22906252 DOI: 10.1016/j.amjsurg.2012.07.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 07/10/2012] [Accepted: 07/10/2012] [Indexed: 12/20/2022]
Abstract
BACKGROUND Understanding gut development may illuminate the adaptive response to massive small-bowel resection and facilitate enteral nutrition. We reported that Schlafen-3 (Slfn3) mediates differentiation in vitro in rat intestinal epithelial. We hypothesized that Slfn3 is involved in intestinal development in vivo. METHODS We removed fetal intestines, liver, and lungs on day 20 of gestation, at birth, and on postnatal days 1 and 5. Expression of Slfn3, markers of intestinal differentiation, and Slfn5, to address specificity, were determined by quantitative reverse-transcription polymerase chain reaction. RESULTS Villin expression increased on days 1 and 5 (8.7 ± .6 and 5.4 ± .4, respectively; P < .01). Intestinal Slfn3 expression was increased substantially after birth (2.1- ± .5-fold) and on days 1 and 5 (P < .02). Slfn3 was higher after birth in liver and lung but decreased sharply thereafter. Slfn5 expression was mostly unchanged. CONCLUSIONS The data suggest that the developmental/maturation effects we observed correlate with Slfn3 but not Slfn5 and are more relevant to the intestines. A better understanding of how Slfn3 promotes intestinal differentiation could help promote intestinal maturation, improving outcomes in children or adults with short-gut syndrome.
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Affiliation(s)
- Mary F Walsh
- Department of Surgery, Michigan State University, Lansing, MI 48912, USA
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