1
|
Wang X, Deng X, Hu J, Zheng W, Ye D, Zhou X, Fang L. K48-linked deubiquitination of VGLL4 by USP15 enhances the efficacy of tumor immunotherapy in triple-negative breast cancer. Cancer Lett 2024; 588:216764. [PMID: 38431034 DOI: 10.1016/j.canlet.2024.216764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 01/28/2024] [Accepted: 02/22/2024] [Indexed: 03/05/2024]
Abstract
Immunotherapy based on PD-1/PD-L1 antagonists has been demonstrated to be efficacious in inducing tumor remission in patients with triple-negative breast cancer (TNBC). However, tumor immune evasion caused by the PD-1/PD-L1 pathway inhibits the immunotherapeutic effect of PD-1/PD-L1 inhibitors against TNBC. Therefore, identifying potential targets for blocking the PD-1/PD-L1 pathway is a compelling strategy for TNBC treatment. Here, we discovered that VGLL4 could inhibit PD-L1 transcription by suppressing STAT3 activation, thereby enhancing the efficacy of anti-PD-1 antibody immunotherapy in TNBC. Low expression of USP15, a deubiquitinating enzyme of VGLL4, was associated with reduced CD8+ T cell infiltration and poor prognosis in TNBC patients. USP15 was found to inhibit PD-L1 transcription, leading to increased CD8+ T cell infiltration and thus enhancing the efficacy of TNBC immunotherapy. Furthermore, SART3 regulated VGLL4 stability and PD-L1 transcription by influencing the nuclear translocation of USP15. In conclusion, our study provides new insights into the biological regulation of PD-L1, identifies a previously unrecognized regulator of this critical immune checkpoint, and highlights potential therapeutic targets for overcoming immune evasion in TNBC.
Collapse
Affiliation(s)
- Xuehui Wang
- Department of Thyroid and Breast Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China; Institute of Breast Disease, School of Medicine, Tongji University, China
| | - Xiaochong Deng
- Department of Thyroid and Breast Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Jiashu Hu
- Department of Thyroid and Breast Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China; Institute of Breast Disease, School of Medicine, Tongji University, China
| | - Wenfang Zheng
- Department of Thyroid and Breast Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Danrong Ye
- Department of Thyroid and Breast Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Xiqian Zhou
- Department of Thyroid and Breast Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Lin Fang
- Department of Thyroid and Breast Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China; Institute of Breast Disease, School of Medicine, Tongji University, China.
| |
Collapse
|
2
|
Saidy B, Vasan R, Durant R, Greener MR, Immanuel A, Green AR, Rakha E, Ellis I, Ball G, Martin SG, Storr SJ. Unravelling transcriptomic complexity in breast cancer through modulation of DARPP-32 expression and signalling pathways. Sci Rep 2023; 13:21163. [PMID: 38036593 PMCID: PMC10689788 DOI: 10.1038/s41598-023-48198-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 11/23/2023] [Indexed: 12/02/2023] Open
Abstract
DARPP-32 is a key regulator of protein-phosphatase-1 (PP-1) and protein kinase A (PKA), with its function dependent upon its phosphorylation state. We previously identified DKK1 and GRB7 as genes with linked expression using Artificial Neural Network (ANN) analysis; here, we determine protein expression in a large cohort of early-stage breast cancer patients. Low levels of DARPP-32 Threonine-34 phosphorylation and DKK1 expression were significantly associated with poor patient prognosis, while low levels of GRB7 expression were linked to better survival outcomes. To gain insight into mechanisms underlying these associations, we analysed the transcriptome of T47D breast cancer cells following DARPP-32 knockdown. We identified 202 differentially expressed transcripts and observed that some overlapped with genes implicated in the ANN analysis, including PTK7, TRAF5, and KLK6, amongst others. Furthermore, we found that treatment of DARPP-32 knockdown cells with 17β-estradiol or PKA inhibitor fragment (6-22) amide led to the differential expression of 193 and 181 transcripts respectively. These results underscore the importance of DARPP-32, a central molecular switch, and its downstream targets, DKK1 and GRB7 in breast cancer. The discovery of common genes identified by a combined patient/cell line transcriptomic approach provides insights into the molecular mechanisms underlying differential breast cancer prognosis and highlights potential targets for therapeutic intervention.
Collapse
Affiliation(s)
- Behnaz Saidy
- Nottingham Breast Cancer Research Centre, Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Richa Vasan
- Nottingham Breast Cancer Research Centre, Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Rosie Durant
- Nottingham Breast Cancer Research Centre, Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Megan-Rose Greener
- Nottingham Breast Cancer Research Centre, Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Adelynn Immanuel
- Nottingham Breast Cancer Research Centre, Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Andrew R Green
- Nottingham Breast Cancer Research Centre, Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Emad Rakha
- Nottingham Breast Cancer Research Centre, Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Ian Ellis
- Nottingham Breast Cancer Research Centre, Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Graham Ball
- Medical Technology Research Centre, Anglia Ruskin University, Bishop Hall Lane, Chelmsford, CM1 1SQ, UK
| | - Stewart G Martin
- Nottingham Breast Cancer Research Centre, Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Sarah J Storr
- Nottingham Breast Cancer Research Centre, Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
| |
Collapse
|
3
|
Kamal AHM, Chakrabarty JK, Chowdhury SM. Lipopolysaccharide and statin-mediated immune-responsive protein networks revealed in macrophages through affinity purification spacer-arm controlled cross-linking (AP-SPACC) proteomics. Mol Omics 2023; 19:48-59. [PMID: 36377691 DOI: 10.1039/d2mo00224h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Toll-like receptor 4 (TLR4), a pattern recognition receptor, is activated by lipopolysaccharides (LPS) and induces the MyD88 pathway, which subsequently produces pro-inflammatory cytokines through activation of transcriptional nuclear factor (NF)-κB. Statins have been widely prescribed to reduce cholesterol synthesis for patients with cardiovascular disease. Statins may have pleiotropic effects, which include anti- and pro-inflammatory effects on cells. The molecular mechanism of the sequential influence of LPS and statin on the innate immune system remains unknown. We employed affinity purification-spacer-arm controlled cross-linking (AP-SPACC) MS-based proteomics analysis to identify the LPS- and statin-LPS-responsive proteins and their networks. LPS-stimulated RAW 264.7 macrophage cells singly and combined with the drug statin used in this study. Two chemical cross-linkers with different spacer chain lengths were utilized to stabilize the weak and transient interactors. Proteomic analysis identified 1631 differentially expressed proteins. We identified 151 immune-response proteins through functional enrichment analysis and visualized their interaction networks. Selected candidate protein-coding genes were validated, specifically squamous cell carcinoma antigens recognized by T cells 3, sphingosine-1-phosphate lyase 1, Ras-related protein Rab-35, and tumor protein D52 protein-coding genes through transcript-level expression analysis. The expressions of those genes were significantly increased upon statin treatment and decreased in LPS-stimulated macrophage cells. Therefore, we presumed that the expression changes of genes occurred due to immune response during activation of inflammation. These results highlight the immune-responsive proteins network, providing a new platform for novel investigations and discovering future therapeutic targets for inflammatory diseases.
Collapse
Affiliation(s)
- Abu Hena Mostafa Kamal
- Department of Chemistry and Biochemistry, University of Texas at Arlington, TX, 76019, USA. .,Advanced Technology Cores, Dan L Duncan Comprehensive Cancer Center, Metabolomics Core, Baylor College of Medicine, Houston, TX, 77030, USA.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Jayanta K Chakrabarty
- Department of Chemistry and Biochemistry, University of Texas at Arlington, TX, 76019, USA. .,Quantitative Proteomics and Metabolomics Center, Columbia University, New York, NY, 10027, USA
| | - Saiful M Chowdhury
- Department of Chemistry and Biochemistry, University of Texas at Arlington, TX, 76019, USA.
| |
Collapse
|
4
|
Huang F, Pan N, Wei Y, Zhao J, Aldarouish M, Wang X, Sun X, Wen Z, Chen Y, Wang L. Effects of Combinatorial Ubiquitinated Protein-Based Nanovaccine and STING Agonist in Mice With Drug-Resistant and Metastatic Breast Cancer. Front Immunol 2021; 12:707298. [PMID: 34589084 PMCID: PMC8475273 DOI: 10.3389/fimmu.2021.707298] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 08/18/2021] [Indexed: 11/20/2022] Open
Abstract
We previously reported that enriched ubiquitinated proteins (UPs) from tumor cells have the potential to be used as immunotherapy vaccine against cancer. Here we enriched UPs from epirubicin (EPB)-induced multi-drug-resistant cancer stem-like breast cancer cell line (4T1/EPB) and tested the efficacy of α-Al2O3-UPs-4T1/EPB (short for UPs-4T1/EPB) as therapeutic vaccine alone and in combination with the stimulator of interferon genes (STING) agonist in mice with drug-resistant and metastatic breast cancer. Vaccination with UPs-4T1/EPB exerted profound anti-tumor effects through augmented specific CD8+ T cell responses and amplified T cell receptor diversity of tumor-infiltrating lymphocytes (TILs). Importantly, the combination with STING agonist further facilitated the migration of mature CD8α+ dendritic cells to the lymph nodes and the infiltration of TILs within tumors, resulting in primary tumor regression and pulmonary metastasis eradication in mice. Moreover, the cured mice were completely resistant against a subsequent rechallenge with the same tumor. Our study indicates that this novel combinatorial immunotherapy with UPs-4T1/EPB vaccine and STING agonist is effective in mice with drug-resistant and metastatic breast cancer.
Collapse
Affiliation(s)
- Fang Huang
- Department of Microbiology and Immunology, Medical School of Southeast University, Nanjing, China
| | - Ning Pan
- Department of Microbiology and Immunology, Medical School of Southeast University, Nanjing, China
| | - Yiting Wei
- Department of Microbiology and Immunology, Medical School of Southeast University, Nanjing, China
| | - Jinjin Zhao
- Department of Microbiology and Immunology, Medical School of Southeast University, Nanjing, China
| | - Mohanad Aldarouish
- Department of Microbiology and Immunology, Medical School of Southeast University, Nanjing, China
| | - Xuru Wang
- Department of Microbiology and Immunology, Medical School of Southeast University, Nanjing, China
| | - Xiaotong Sun
- Department of Microbiology and Immunology, Medical School of Southeast University, Nanjing, China
| | - Zhifa Wen
- Department of Microbiology and Immunology, Medical School of Southeast University, Nanjing, China
| | - Yongqiang Chen
- Department of Microbiology and Immunology, Medical School of Southeast University, Nanjing, China
| | - Lixin Wang
- Department of Microbiology and Immunology, Medical School of Southeast University, Nanjing, China
| |
Collapse
|
5
|
Athie A, Marchese FP, González J, Lozano T, Raimondi I, Juvvuna PK, Abad A, Marin-Bejar O, Serizay J, Martínez D, Ajona D, Pajares MJ, Sandoval J, Montuenga LM, Kanduri C, Lasarte JJ, Huarte M. Analysis of copy number alterations reveals the lncRNA ALAL-1 as a regulator of lung cancer immune evasion. J Cell Biol 2021; 219:152052. [PMID: 32858747 PMCID: PMC7480115 DOI: 10.1083/jcb.201908078] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 12/12/2019] [Accepted: 06/05/2020] [Indexed: 12/31/2022] Open
Abstract
Cancer is characterized by genomic instability leading to deletion or amplification of oncogenes or tumor suppressors. However, most of the altered regions are devoid of known cancer drivers. Here, we identify lncRNAs frequently lost or amplified in cancer. Among them, we found amplified lncRNA associated with lung cancer-1 (ALAL-1) as frequently amplified in lung adenocarcinomas. ALAL-1 is also overexpressed in additional tumor types, such as lung squamous carcinoma. The RNA product of ALAL-1 is able to promote the proliferation and tumorigenicity of lung cancer cells. ALAL-1 is a TNFα- and NF-κB-induced cytoplasmic lncRNA that specifically interacts with SART3, regulating the subcellular localization of the protein deubiquitinase USP4 and, in turn, its function in the cell. Interestingly, ALAL-1 expression inversely correlates with the immune infiltration of lung squamous tumors, while tumors with ALAL-1 amplification show lower infiltration of several types of immune cells. We have thus unveiled a pro-oncogenic lncRNA that mediates cancer immune evasion, pointing to a new target for immune potentiation.
Collapse
Affiliation(s)
- Alejandro Athie
- Department of Gene Therapy and Regulation of Gene Expression, Center for Applied Medical Research, University of Navarra, Pamplona, Spain.,Institute of Health Research of Navarra, Pamplona, Spain
| | - Francesco P Marchese
- Department of Gene Therapy and Regulation of Gene Expression, Center for Applied Medical Research, University of Navarra, Pamplona, Spain.,Institute of Health Research of Navarra, Pamplona, Spain
| | - Jovanna González
- Department of Gene Therapy and Regulation of Gene Expression, Center for Applied Medical Research, University of Navarra, Pamplona, Spain.,Institute of Health Research of Navarra, Pamplona, Spain
| | - Teresa Lozano
- Institute of Health Research of Navarra, Pamplona, Spain.,Department of Immunology and Immunotherapy, Center for Applied Medical Research, University of Navarra, Pamplona, Spain
| | - Ivan Raimondi
- Department of Gene Therapy and Regulation of Gene Expression, Center for Applied Medical Research, University of Navarra, Pamplona, Spain.,Institute of Health Research of Navarra, Pamplona, Spain
| | - Prasanna Kumar Juvvuna
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Amaya Abad
- Department of Gene Therapy and Regulation of Gene Expression, Center for Applied Medical Research, University of Navarra, Pamplona, Spain.,Institute of Health Research of Navarra, Pamplona, Spain
| | - Oskar Marin-Bejar
- Department of Gene Therapy and Regulation of Gene Expression, Center for Applied Medical Research, University of Navarra, Pamplona, Spain.,Institute of Health Research of Navarra, Pamplona, Spain
| | - Jacques Serizay
- Department of Gene Therapy and Regulation of Gene Expression, Center for Applied Medical Research, University of Navarra, Pamplona, Spain.,Institute of Health Research of Navarra, Pamplona, Spain
| | - Dannys Martínez
- Department of Gene Therapy and Regulation of Gene Expression, Center for Applied Medical Research, University of Navarra, Pamplona, Spain.,Institute of Health Research of Navarra, Pamplona, Spain
| | - Daniel Ajona
- Institute of Health Research of Navarra, Pamplona, Spain.,Department of Solid Tumors, Center for Applied Medical Research, University of Navarra, Pamplona, Spain.,Department of Pathology, Anatomy and Physiology, University of Navarra and CIBERONC, Centro de Investigación Biomédica en Red de Cáncer, Madrid, Spain
| | - Maria Jose Pajares
- Institute of Health Research of Navarra, Pamplona, Spain.,Department of Solid Tumors, Center for Applied Medical Research, University of Navarra, Pamplona, Spain.,Department of Pathology, Anatomy and Physiology, University of Navarra and CIBERONC, Centro de Investigación Biomédica en Red de Cáncer, Madrid, Spain
| | - Juan Sandoval
- Biomarkers and Precision Medicine Unit, Health Research Institute La Fe, Valencia, Spain.,Epigenomics Core Facility, Health Research Institute La Fe, Valencia, Spain
| | - Luis M Montuenga
- Institute of Health Research of Navarra, Pamplona, Spain.,Department of Solid Tumors, Center for Applied Medical Research, University of Navarra, Pamplona, Spain.,Department of Pathology, Anatomy and Physiology, University of Navarra and CIBERONC, Centro de Investigación Biomédica en Red de Cáncer, Madrid, Spain
| | - Chandrasekhar Kanduri
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Juan J Lasarte
- Institute of Health Research of Navarra, Pamplona, Spain.,Department of Immunology and Immunotherapy, Center for Applied Medical Research, University of Navarra, Pamplona, Spain
| | - Maite Huarte
- Department of Gene Therapy and Regulation of Gene Expression, Center for Applied Medical Research, University of Navarra, Pamplona, Spain.,Institute of Health Research of Navarra, Pamplona, Spain
| |
Collapse
|
6
|
Sherman EJ, Mitchell DC, Garner AL. The RNA-binding protein SART3 promotes miR-34a biogenesis and G 1 cell cycle arrest in lung cancer cells. J Biol Chem 2019; 294:17188-17196. [PMID: 31619517 DOI: 10.1074/jbc.ac119.010419] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/04/2019] [Indexed: 12/14/2022] Open
Abstract
MicroRNAs (miRNAs or miRs) are small, noncoding RNAs that are implicated in the regulation of most biological processes. Global miRNA biogenesis is altered in many cancers, and RNA-binding proteins play a role in miRNA biogenesis, presenting a promising avenue for targeting miRNA dysregulation in diseases. miR-34a exhibits tumor-suppressive activities by targeting cell cycle regulators CDK4/6 and anti-apoptotic factor BCL-2, among other regulatory pathways such as Wnt, TGF-β, and Notch signaling. Many cancers exhibit down-regulation or loss of miR-34a, and synthetic miR-34a supplementation has been shown to inhibit tumor growth in vivo However, the post-transcriptional mechanisms that cause miR-34a loss in cancer are not entirely understood. Here, using a proteomics-mediated approach in non-small-cell lung cancer (NSCLC) cells, we identified squamous cell carcinoma antigen recognized by T-cells 3 (SART3) as a putative pre-miR-34a-binding protein. SART3 is a spliceosome recycling factor and nuclear RNA-binding protein with no previously reported role in miRNA regulation. We found that SART3 binds pre-miR-34a with higher specificity than pre-let-7d (used as a negative control) and elucidated a new functional role for SART3 in NSCLC cells. SART3 overexpression increased miR-34a levels, down-regulated the miR-34a target genes CDK4/6, and caused a cell cycle arrest in the G1 phase. In vitro binding experiments revealed that the RNA-recognition motifs within the SART3 sequence are responsible for selective pre-miR-34a binding. Our results provide evidence for a significant role of SART3 in miR-34a biogenesis and cell cycle progression in NSCLC cells.
Collapse
Affiliation(s)
- Emily J Sherman
- Program in Chemical Biology, University of Michigan, Ann Arbor, Michigan 48109
| | - Dylan C Mitchell
- Program in Chemical Biology, University of Michigan, Ann Arbor, Michigan 48109
| | - Amanda L Garner
- Program in Chemical Biology, University of Michigan, Ann Arbor, Michigan 48109 .,Department of Medicinal Chemistry, University of Michigan, Ann Arbor, Michigan 48109
| |
Collapse
|
7
|
Bekeschus S, Wende K, Hefny MM, Rödder K, Jablonowski H, Schmidt A, Woedtke TV, Weltmann KD, Benedikt J. Oxygen atoms are critical in rendering THP-1 leukaemia cells susceptible to cold physical plasma-induced apoptosis. Sci Rep 2017; 7:2791. [PMID: 28584285 PMCID: PMC5459849 DOI: 10.1038/s41598-017-03131-y] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 04/25/2017] [Indexed: 12/12/2022] Open
Abstract
Cold physical plasma has been suggested as a powerful new tool in oncology. However, some cancer cells such as THP-1 leukaemia cells have been shown to be resistant towards plasma-induced cell death, thereby serving as a good model for optimizing plasmas in order to foster pro-apoptotic anticancer effects. A helium/oxygen radio frequency driven atmospheric plasma profoundly induced apoptosis in THP-1 cells whereas helium, humidified helium, and humidified helium/oxygen plasmas were inefficient. Hydrogen peroxide – previously shown as central plasma-derived agent – did not participate in the killing reaction but our results suggest hypochlorous acid to be responsible for the effect observed. Proteomic analysis of THP-1 cells exposed to He/O2 plasma emphasized a prominent growth retardation, cell stress, apoptosis, and a pro-immunogenic profile. Altogether, a plasma setting that inactivates previously unresponsive leukaemia cells is presented. Crucial reactive species in the plasma and liquid environment were identified and discussed, deciphering the complexity of plasma from the gas phase into the liquid down to the cellular response mechanism. These results may help tailoring plasmas for clinical applications such as oxidation-insensitive types of cancer.
Collapse
Affiliation(s)
- Sander Bekeschus
- Leibniz-Institute for Plasma Science and Technology (INP Greifswald) ZIK plasmatis, Greifswald, Germany.
| | - Kristian Wende
- Leibniz-Institute for Plasma Science and Technology (INP Greifswald) ZIK plasmatis, Greifswald, Germany
| | - Mohamed Mokhtar Hefny
- Coupled Plasma-Solid State Systems, Faculty of Physics and Astronomy, Ruhr University Bochum, Bochum, Germany.,Basic Science Department, Faculty of Engineering and Technology, Future University in Egypt, Cairo, Egypt
| | - Katrin Rödder
- Leibniz-Institute for Plasma Science and Technology (INP Greifswald) ZIK plasmatis, Greifswald, Germany
| | - Helena Jablonowski
- Leibniz-Institute for Plasma Science and Technology (INP Greifswald) ZIK plasmatis, Greifswald, Germany
| | - Anke Schmidt
- Leibniz-Institute for Plasma Science and Technology (INP Greifswald) ZIK plasmatis, Greifswald, Germany
| | - Thomas von Woedtke
- Leibniz-Institute for Plasma Science and Technology (INP Greifswald) ZIK plasmatis, Greifswald, Germany.,Institute for Hygiene and Environmental Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Klaus-Dieter Weltmann
- Leibniz-Institute for Plasma Science and Technology (INP Greifswald) ZIK plasmatis, Greifswald, Germany
| | - Jan Benedikt
- Coupled Plasma-Solid State Systems, Faculty of Physics and Astronomy, Ruhr University Bochum, Bochum, Germany
| |
Collapse
|
8
|
Zhang Q, Harding R, Hou F, Dong A, Walker JR, Bteich J, Tong Y. Structural Basis of the Recruitment of Ubiquitin-specific Protease USP15 by Spliceosome Recycling Factor SART3. J Biol Chem 2016; 291:17283-92. [PMID: 27255711 DOI: 10.1074/jbc.m116.740787] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Indexed: 12/21/2022] Open
Abstract
Ubiquitin-specific proteases (USPs) USP15 and USP4 belong to a subset of USPs featuring an N-terminal tandem domain in USP (DUSP) and ubiquitin-like (UBL) domain. Squamous cell carcinoma antigen recognized by T-cell 3 (SART3), a spliceosome recycling factor, binds to the DUSP-UBL domain of USP15 and USP4, recruiting them to the nucleus from the cytosol to control deubiquitination of histone H2B and spliceosomal proteins, respectively. To provide structural insight, we solved crystal structures of SART3 in the apo-form and in complex with the DUSP-UBL domain of USP15 at 2.0 and 3.0 Å, respectively. Structural analysis reveals SART3 contains 12 half-a-tetratricopeptide (HAT) repeats, organized into two subdomains, HAT-N and HAT-C. SART3 dimerizes through the concave surface of HAT-C, whereas the HAT-C convex surface binds USP15 in a novel bipartite mode. Isothermal titration calorimetry measurements and mutagenesis analysis confirmed key residues of USP15 involved in the interaction and indicated USP15 binds 20-fold stronger than USP4.
Collapse
Affiliation(s)
- Qi Zhang
- From the Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7
| | - Rachel Harding
- From the Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7
| | - Feng Hou
- From the Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7
| | - Aiping Dong
- From the Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7
| | - John R Walker
- From the Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7
| | - Joseph Bteich
- the Drug Discovery Program, Ontario Institute for Cancer Research, Toronto, Ontario M5G 0A3, and
| | - Yufeng Tong
- From the Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7, the Department of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario M5G 1L7, Canada
| |
Collapse
|
9
|
Role of Tat-interacting protein of 110 kDa and microRNAs in the regulation of hematopoiesis. Curr Opin Hematol 2016; 23:325-30. [PMID: 27071021 DOI: 10.1097/moh.0000000000000246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Hematopoiesis is regulated by cellular factors including transcription factors, microRNAs, and epigenetic modifiers. Understanding how these factors regulate hematopoiesis is pivotal for manipulating them to achieve their desired potential. In this review, we will focus on HIV-1 Tat-interacting protein of 110 kDa (Tip110) and its regulation of hematopoiesis. RECENT FINDINGS There are several pathways in hematopoiesis that involve Tip110 regulation. Tip110 is expressed in human cord blood CD34 cells; its expression decreases when CD34 cells begin to differentiate. Tip110 is also expressed in mouse marrow hematopoietic stem cells (HSC) and hematopoietic progenitor cells (HPC). Tip110 expression increases the number, survival, and cell cycling of HPC. Tip110-mediated regulation of hematopoiesis has been linked to its reciprocal control of proto-oncogene expression. Small noncoding microRNAs (miRs) have been shown to play important roles in regulation of hematopoiesis. miR-124 specifically targets 3'-untranslated region of Tip110 and subsequently regulates Tip110 expression in HSC. SUMMARY Our recent findings for manipulating expression levels of Tip110 in HSC and HPC could be useful for expanding HSC and HPC and for improving engraftment of cord blood HSC/HPC.
Collapse
|
10
|
Whitmill A, Timani KA, Liu Y, He JJ. Tip110: Physical properties, primary structure, and biological functions. Life Sci 2016; 149:79-95. [PMID: 26896687 DOI: 10.1016/j.lfs.2016.02.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Revised: 02/11/2016] [Accepted: 02/15/2016] [Indexed: 12/11/2022]
Abstract
HIV-1 Tat-interacting protein of 110kDa (Tip110), also referred to as squamous cell carcinoma antigen recognized by T cells 3 (Sart3), p110 or p110(nrb), was initially identified as a cDNA clone (KIAA0156) without annotated functions. Over the past twenty years, several functions have been attributed to this protein. The proposed biological functions include roles for Tip110 in pre-mRNA splicing, gene transcription, stem cell biology, and development. Dysregulation of Tip110 is also a contributing factor in the development of cancer and other human diseases. It is clear that our understanding of this protein is rapidly evolving. In this review, we aimed to provide a summary of all the existing literature on this gene/protein and its proposed biological functions.
Collapse
Affiliation(s)
- Amanda Whitmill
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, TX 76107, United States
| | - Khalid Amine Timani
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, TX 76107, United States
| | - Ying Liu
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, TX 76107, United States
| | - Johnny J He
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, TX 76107, United States.
| |
Collapse
|
11
|
Tip110 Regulates the Cross Talk between p53 and Hypoxia-Inducible Factor 1α under Hypoxia and Promotes Survival of Cancer Cells. Mol Cell Biol 2015; 35:2254-64. [PMID: 25939381 DOI: 10.1128/mcb.00001-15] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Accepted: 04/06/2015] [Indexed: 12/30/2022] Open
Abstract
Hypoxia often occurs under various physiological and pathophysiological conditions, including solid tumors; it is linked to malignant transformation, metastatic progression, and treatment failure or resistance. Tip110 protein plays important roles in several known physiological and pathophysiological processes, including cancers. Thus, in the present study we investigated the regulation of Tip110 expression under hypoxia. Hypoxia led to Tip110 protein degradation through the ubiquitin-proteasome system. Under hypoxia, Tip110 stabilized p53, which in return destabilized Tip110. In addition, Tip110 regulated hypoxia-inducible factor 1α (HIF-1α), likely through enhancement of its protein stability. Furthermore, Tip110 upregulated p300, a known coactivator for both p53 and HIF-1α. Expression of a p53(22/23) mutant deficient in p300 binding accelerated Tip110 degradation under hypoxia. Tip110 knockdown resulted in the inhibition of cell proliferation and cell death in the presence of p53. Finally, significantly less Tip110, p53, and HIF-1α was detected in the hypoxic region of bone metastasis tumors in a mouse model of human melanoma cells. Taken together, these results suggest Tip110 is an important mediator in the cross talk between p53 and HIF-1α in response to hypoxic stress.
Collapse
|
12
|
Timani KA, Liu Y, Suvannasankha A, He JJ. Regulation of ubiquitin-proteasome system-mediated Tip110 protein degradation by USP15. Int J Biochem Cell Biol 2014; 54:10-9. [PMID: 24984263 DOI: 10.1016/j.biocel.2014.06.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Revised: 06/16/2014] [Accepted: 06/19/2014] [Indexed: 10/25/2022]
Abstract
Tip110 is a nuclear protein and has been shown to function in tumor antigenicity, regulation of gene transcription, pre-mRNA splicing, stem cell proliferation and differentiation, and embryonic development. To characterize the in vivo functions of Tip110, a transgene cassette expressing human Tip110 protein (hTip110) was used to generate hTip110 transgenic (Tg) mice. Unexpectedly, only Tip110 mRNA but not Tip110 protein was expressed in Tg MEF and tissues. Treatment of Tg MEF with proteasome inhibitors led to detection of hTip110 protein, which prompted us to investigate the regulatory mechanisms of Tip110 degradation in mouse cells. We found that hTip110 was more sensitive to ubiquitin-proteasome system (UPS)-mediated protein degradation than mouse Tip110 (mTip110), likely resulting from more hTip110 ubiquitination. Using affinity chromatography and proteomics, we identified USP15, a deubiquitinating enzyme, to be associated with Tip110. Tip110 expression led to re-distribution of USP15 from the cytoplasm to the nucleus and complete co-localization of Tip110 with USP15 in the nucleus, whereas USP15 expression resulted in hTip110 deubiquitination. Interestingly, USP15 knockdown restored hTip110 protein expression in Tg MEF and USP15 expression had little effects. Taken together, these results provide insights into the regulatory mechanism of human Tip110 degradation by USP15.
Collapse
Affiliation(s)
- Khalid Amine Timani
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA.
| | - Ying Liu
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
| | - Attaya Suvannasankha
- Division of Hematology and Oncology, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Johnny J He
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
| |
Collapse
|
13
|
Timani KA, Liu Y, He JJ. Tip110 interacts with YB-1 and regulates each other's function. BMC Mol Biol 2013; 14:14. [PMID: 23822148 PMCID: PMC3716619 DOI: 10.1186/1471-2199-14-14] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 07/02/2013] [Indexed: 12/02/2022] Open
Abstract
Background Tip110 plays important roles in tumor immunobiology, pre-mRNA splicing, expression regulation of viral and host genes, and possibly protein turnover. It is clear that our understanding of Tip110 biological function remains incomplete. Results Herein, we employed an immunoaffinity-based enrichment approach combined with protein mass spectrometry and attempted to identify Tip110-interacting cellular proteins. A total of 13 major proteins were identified to be complexed with Tip110. Among them was Y-box binding protein 1 (YB-1). The interaction of Tip110 with YB-1 was further dissected and confirmed to be specific and involve the N-terminal of both Tip110 and YB-1 proteins. A HIV-1 LTR promoter-driven reporter gene assay and a CD44 minigene in vivo splicing assay were chosen to evaluate the functional relevance of the Tip110/YB-1 interaction. We showed that YB-1 potentiates the Tip110/Tat-mediated transactivation of the HIV-1 LTR promoter while Tip110 promotes the inclusion of the exon 5 in CD44 minigene alternative splicing. Conclusions Tip110 and YB-1 interact to form a complex and mutually regulate each other’s biological functions.
Collapse
|
14
|
Erben P, Gosenca D, Müller MC, Reinhard J, Score J, Del Valle F, Walz C, Mix J, Metzgeroth G, Ernst T, Haferlach C, Cross NCP, Hochhaus A, Reiter A. Screening for diverse PDGFRA or PDGFRB fusion genes is facilitated by generic quantitative reverse transcriptase polymerase chain reaction analysis. Haematologica 2010; 95:738-44. [PMID: 20107158 DOI: 10.3324/haematol.2009.016345] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Rapid identification of diverse fusion genes with involvement of PDGFRA or PDGFRB in eosinophilia-associated myeloproliferative neoplasms is essential for adequate clinical management but is complicated by the multitude and heterogeneity of partner genes and breakpoints. DESIGN AND METHODS We established a generic quantitative reverse transcriptase polymerase chain reaction to detect overexpression of the 3'-regions of PDGFRA or PDGFRB as a possible indicator of an underlying fusion. RESULTS At diagnosis, all patients with known fusion genes involving PDGFRA (n=5; 51 patients) or PDGFRB (n=5; 7 patients) showed significantly increased normalized expression levels compared to 191 patients with fusion gene-negative eosinophilia or healthy individuals (PDGFRA/ABL: 0.73 versus 0.0066 versus 0.0064, P<0.0001; PDGFRB/ABL: 196 versus 3.8 versus 5.85, P<0.0001). The sensitivity and specificity of the activation screening test were, respectively, 100% and 88.4% for PDGFRA and 100% and 94% for PDGFRB. Furthermore, significant overexpression of PDGFRB was found in a patient with an eosinophilia-associated myeloproliferative neoplasm with uninformative cytogenetics and an excellent response to imatinib. Subsequently, a new SART3-PDGFRB fusion gene was identified by 5'-rapid amplification of cDNA ends polymerase chain reaction (5'-RACE-PCR). CONCLUSIONS Quantitative reverse transcriptase polymerase chain reaction analysis is a simple and useful adjunct to standard diagnostic assays to detect clinically significant overexpression of PDGFRA and PDGFRB in eosinophilia-associated myeloproliferative neoplasms or related disorders.
Collapse
Affiliation(s)
- Philipp Erben
- III. Medizinische Klinik, Universitätsmedizin Mannheim Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Cimino D, Fuso L, Sfiligoi C, Biglia N, Ponzone R, Maggiorotto F, Russo G, Cicatiello L, Weisz A, Taverna D, Sismondi P, De Bortoli M. Identification of new genes associated with breast cancer progression by gene expression analysis of predefined sets of neoplastic tissues. Int J Cancer 2008; 123:1327-38. [DOI: 10.1002/ijc.23660] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
16
|
Morse MA, Lyerly H, Clay TM, Abdel-Wahab O, Chui SY, Garst J, Gollob J, Grossi PM, Kalady M, Mosca PJ, Onaitis M, Sampson JH, Seigler HF, Toloza EM, Tyler D, Vieweg J, Yang Y. How does the immune system attack cancer? Curr Probl Surg 2004. [DOI: 10.1016/j.cpsurg.2003.08.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
17
|
Bell M, Schreiner S, Damianov A, Reddy R, Bindereif A. p110, a novel human U6 snRNP protein and U4/U6 snRNP recycling factor. EMBO J 2002; 21:2724-35. [PMID: 12032085 PMCID: PMC126028 DOI: 10.1093/emboj/21.11.2724] [Citation(s) in RCA: 102] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
During each spliceosome cycle, the U6 snRNA undergoes extensive structural rearrangements, alternating between singular, U4-U6 and U6-U2 base-paired forms. In Saccharomyces cerevisiae, Prp24 functions as an snRNP recycling factor, reannealing U4 and U6 snRNAs. By database searching, we have identified a Prp24-related human protein previously described as p110(nrb) or SART3. p110 contains in its C-terminal region two RNA recognition motifs (RRMs). The N-terminal two-thirds of p110, for which there is no counterpart in the S.cerevisiae Prp24, carries seven tetratricopeptide repeat (TPR) domains. p110 homologs sharing the same domain structure also exist in several other eukaryotes. p110 is associated with the mammalian U6 and U4/U6 snRNPs, but not with U4/U5/U6 tri-snRNPs nor with spliceosomes. Recom binant p110 binds in vitro specifically to human U6 snRNA, requiring an internal U6 region. Using an in vitro recycling assay, we demonstrate that p110 functions in the reassembly of the U4/U6 snRNP. In summary, p110 represents the human ortholog of Prp24, and associates only transiently with U6 and U4/U6 snRNPs during the recycling phase of the spliceosome cycle.
Collapse
Affiliation(s)
| | | | | | - Ram Reddy
- Institut für Biochemie, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 58, D-35392 Giessen, Germany and
Department of Pharmacology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA Corresponding author e-mail:
| | - Albrecht Bindereif
- Institut für Biochemie, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 58, D-35392 Giessen, Germany and
Department of Pharmacology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA Corresponding author e-mail:
| |
Collapse
|