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Qin Y, Cui Q, Sun G, Chao J, Wang C, Chen X, Ye P, Zhou T, Jeyachandran AV, Sun O, Liu W, Yao S, Palmer C, Liu X, Arumugaswami V, Chan WC, Wang X, Shi Y. Developing enhanced immunotherapy using NKG2A knockout human pluripotent stem cell-derived NK cells. Cell Rep 2024:114867. [PMID: 39447568 DOI: 10.1016/j.celrep.2024.114867] [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: 09/29/2023] [Revised: 07/05/2024] [Accepted: 09/27/2024] [Indexed: 10/26/2024] Open
Abstract
Cancer immunotherapy is gaining increasing attention. However, immune checkpoints are exploited by cancer cells to evade anti-tumor immunotherapy. Here, we knocked out NKG2A, an immune checkpoint expressed on natural killer (NK) cells, in human pluripotent stem cells (hPSCs) and differentiated these hPSCs into NK (PSC-NK) cells. We show that NKG2A knockout (KO) enhances the anti-tumor and anti-viral capabilities of PSC-NK cells. NKG2A KO endows PSC-NK cells with higher cytotoxicity against HLA-E-expressing glioblastoma (GBM) cells, leukemia cells, and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-infected cells in vitro. The NKG2A KO PSC-NK cells also exerted potent anti-tumor activity in vivo, leading to substantially suppressed tumor progression and prolonged survival of tumor-bearing mice in a xenograft GBM mouse model. These findings underscore the potential of PSC-NK cells with immune checkpoint KO as a promising cell-based immunotherapy. The unlimited supply and ease of genetic engineering of hPSCs makes genetically engineered PSC-NK an attractive option for easily accessible "off-the-shelf" cancer immunotherapy.
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Affiliation(s)
- Yue Qin
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Qi Cui
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Guihua Sun
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Jianfei Chao
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Cheng Wang
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Xianwei Chen
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Peng Ye
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Tao Zhou
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Arjit Vijey Jeyachandran
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Olivia Sun
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Wei Liu
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Shunyu Yao
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Chance Palmer
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Xuxiang Liu
- Department of Pathology, City of Hope National Medical Center, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Vaithilingaraja Arumugaswami
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Wing C Chan
- Department of Pathology, City of Hope National Medical Center, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Xiuli Wang
- Department of Hematology & Hematopoietic Cell Transplantation, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA
| | - Yanhong Shi
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA.
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Shen X, Peng X, Guo Y, Dai Z, Cui L, Yu W, Liu Y, Liu CY. YAP/TAZ enhances P-body formation to promote tumorigenesis. eLife 2024; 12:RP88573. [PMID: 39046443 PMCID: PMC11268890 DOI: 10.7554/elife.88573] [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] [Indexed: 07/25/2024] Open
Abstract
The role of processing bodies (P-bodies) in tumorigenesis and tumor progression is not well understood. Here, we showed that the oncogenes YAP/TAZ promote P-body formation in a series of cancer cell lines. Mechanistically, both transcriptional activation of the P-body-related genes SAMD4A, AJUBA, and WTIP and transcriptional suppression of the tumor suppressor gene PNRC1 are involved in enhancing the effects of YAP/TAZ on P-body formation in colorectal cancer (CRC) cells. By reexpression of PNRC1 or knockdown of P-body core genes (DDX6, DCP1A, and LSM14A), we determined that disruption of P-bodies attenuates cell proliferation, cell migration, and tumor growth induced by overexpression of YAP5SA in CRC. Analysis of a pancancer CRISPR screen database (DepMap) revealed co-dependencies between YAP/TEAD and the P-body core genes and correlations between the mRNA levels of SAMD4A, AJUBA, WTIP, PNRC1, and YAP target genes. Our study suggests that the P-body is a new downstream effector of YAP/TAZ, which implies that reexpression of PNRC1 or disruption of P-bodies is a potential therapeutic strategy for tumors with active YAP.
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Affiliation(s)
- Xia Shen
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
| | - Xiang Peng
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
| | - YueGui Guo
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
| | - Zhujiang Dai
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
| | - Long Cui
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
| | - Wei Yu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan UniversityShanghaiChina
| | - Yun Liu
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
| | - Chen-Ying Liu
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
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3
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Singh A, Verma A, Dutta G, Gowane GR, Ludri A, Alex R. Functional transcriptome analysis revealed major changes in pathways affecting systems biology of Tharparkar cattle under seasonal heat stress. 3 Biotech 2024; 14:177. [PMID: 38855148 PMCID: PMC11156831 DOI: 10.1007/s13205-024-04018-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 05/26/2024] [Indexed: 06/11/2024] Open
Abstract
Heat stress significantly disturbs the production, reproduction, and systems biology of dairy cattle. A complex interaction among biological systems helps to combat and overcome heat stress. Indicine cattle breed Tharparkar has been well known for its thermal adaptability. Therefore, present investigation considered RNA-seq technology to explore the functional transcriptomics of Tharparkar cattle with the help of samples collected in spring and summer season. Among differentially expressed genes, about 3280 genes were highly dysregulated, in which 1207 gene were upregulated and 2073 genes were downregulated (|log2fold change|≥ 1 and p ≤ 0.05). Upregulated genes were related to insulin activation, interferons, and potassium ion transport. In contrast, downregulated genes were related to RNA processing, translation, and ubiquitination. Functional annotation revealed that the pathways associated with nervous system (NPFFR1, ROBO3) and metal ion transport (KCNG2, ATP1A2) were highly activated while mRNA processing and translation (EIF4A, EIF4B) and protein processing pathway (VPS4B, PEX13) were highly downregulated. Protein-protein interactions identified hub genes such as ATP13A3, IFNGR2, UBXN7, EIF4A2, SLC12A8 found to play an important role in immune, ubiquitination, translation and transport function. Co-expression network includes LYZ, PNRC1, SQSTM1, EIF4AB and DDX17 genes which are involved in lysosomal activity, tumor inhibition, ubiquitination, and translation initiation. Chemokine signaling pathway associated with immune response was highly upregulated in cluster analysis. The findings of this study provide insights into transcriptome expression and regulation which may better explain complex thermal resilience mechanism of Tharparkar cattle in heat stress under natural conditions. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-04018-2.
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Affiliation(s)
- Ayushi Singh
- Animal Genetics and Breeding Division, ICAR-National Dairy Research Institute, Karnal, 132001 India
| | - Archana Verma
- Animal Genetics and Breeding Division, ICAR-National Dairy Research Institute, Karnal, 132001 India
| | - Gaurav Dutta
- Animal Genetics and Breeding Division, ICAR-National Dairy Research Institute, Karnal, 132001 India
| | - Gopal R. Gowane
- Animal Genetics and Breeding Division, ICAR-National Dairy Research Institute, Karnal, 132001 India
| | - Ashutosh Ludri
- Animal Genetics and Breeding Division, ICAR-National Dairy Research Institute, Karnal, 132001 India
| | - Rani Alex
- Animal Genetics and Breeding Division, ICAR-National Dairy Research Institute, Karnal, 132001 India
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van der Heijden EMDL, Lefevre L, Gossner A, Tzelos T, Connelley TK, Hassan MA. Comparative transcriptional analysis identifies genes associated with the attenuation of Theileria parva infected cells after long-term in vitro culture. Sci Rep 2024; 14:8976. [PMID: 38637584 PMCID: PMC11026401 DOI: 10.1038/s41598-024-59197-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: 02/01/2024] [Accepted: 04/08/2024] [Indexed: 04/20/2024] Open
Abstract
Autologous administration of attenuated Theileria parva-infected cells induces immunity to T. parva in cattle. The mechanism of attenuation, however, is largely unknown. Here, we used RNA sequencing of pathogenic and attenuated T. parva-infected T-cells to elucidate the transcriptional changes underpinning attenuation. We observed differential expression of several host genes, including TRAIL, PD-1, TGF-β and granzymes that are known to regulate inflammation and proliferation of infected cells. Importantly, many genes linked with the attenuation of the related T. annulata-infected cells were not dysregulated in this study. Furthermore, known T. parva antigens were not dysregulated in attenuated relative to pathogenic cells, indicating that attenuation is not due to enhanced immunogenicity. Overall this study suggests that attenuation is driven by a decrease in proliferation and restoration of the inflammatory profile of T. parva-infected cells. Additionally, it provides a foundation for future mechanistic studies of the attenuation phenotype in Theileria-infected cells.
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Affiliation(s)
- Elisabeth M D L van der Heijden
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.
| | - Lucas Lefevre
- Division of Immunology, The Roslin Institute, University of Edinburgh, Edinburgh, UK
| | - Anton Gossner
- Division of Immunology, The Roslin Institute, University of Edinburgh, Edinburgh, UK
| | - Thomas Tzelos
- Division of Immunology, The Roslin Institute, University of Edinburgh, Edinburgh, UK
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ, UK
| | - Timothy K Connelley
- Division of Immunology, The Roslin Institute, University of Edinburgh, Edinburgh, UK
- Centre for Tropical Livestock Genetics and Health, Easter Bush Campus, Edinburgh, UK
| | - Musa A Hassan
- Division of Immunology, The Roslin Institute, University of Edinburgh, Edinburgh, UK.
- Centre for Tropical Livestock Genetics and Health, Easter Bush Campus, Edinburgh, UK.
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5
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Yang L, Yang X, Zhuang Y, Wang J, Chen X, Hu W, Shan D, Rong R, Zhou X, Xiao S. A novel KMT2A::DCP1B rearrangement in chronic neutrophilic leukemia. Int J Lab Hematol 2024; 46:165-168. [PMID: 37712389 DOI: 10.1111/ijlh.14173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 09/01/2023] [Indexed: 09/16/2023]
Affiliation(s)
- Lei Yang
- Department of Hematology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, China
| | | | - Yun Zhuang
- Department of Hematology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, China
| | - Jue Wang
- Department of Hematology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, China
| | - Xiaojun Chen
- Suzhou Sano Precision Medicine Ltd, Suzhou, China
| | - Wentao Hu
- Suzhou Sano Precision Medicine Ltd, Suzhou, China
| | - Dan Shan
- Suzhou Sano Precision Medicine Ltd, Suzhou, China
| | - Rong Rong
- Department of Biological Sciences, Xi An Jiaotong-Liverpool University, Suzhou, China
| | - Xin Zhou
- Department of Hematology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, China
| | - Sheng Xiao
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
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Güllülü Ö, Mayer BE, Toplek FB. Linking Gene Fusions to Bone Marrow Failure and Malignant Transformation in Dyskeratosis Congenita. Int J Mol Sci 2024; 25:1606. [PMID: 38338888 PMCID: PMC10855549 DOI: 10.3390/ijms25031606] [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: 12/14/2023] [Revised: 01/26/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
Dyskeratosis Congenita (DC) is a multisystem disorder intrinsically associated with telomere dysfunction, leading to bone marrow failure (BMF). Although the pathology of DC is largely driven by mutations in telomere-associated genes, the implications of gene fusions, which emerge due to telomere-induced genomic instability, remain unexplored. We meticulously analyzed gene fusions in RNA-Seq data from DC patients to provide deeper insights into DC's progression. The most significant DC-specific gene fusions were subsequently put through in silico assessments to ascertain biophysical and structural attributes, including charge patterning, inherent disorder, and propensity for self-association. Selected candidates were then analyzed using deep learning-powered structural predictions and molecular dynamics simulations to gauge their potential for forming higher-order oligomers. Our exploration revealed that genes participating in fusion events play crucial roles in upholding genomic stability, facilitating hematopoiesis, and suppressing tumors. Notably, our analysis spotlighted a particularly disordered polyampholyte fusion protein that exhibits robust higher-order oligomerization dynamics. To conclude, this research underscores the potential significance of several high-confidence gene fusions in the progression of BMF in DC, particularly through the dysregulation of genomic stability, hematopoiesis, and tumor suppression. Additionally, we propose that these fusion proteins might hold a detrimental role, specifically in inducing proteotoxicity-driven hematopoietic disruptions.
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Affiliation(s)
- Ömer Güllülü
- Department of Structural Biology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA
| | - Benjamin E. Mayer
- Computational Biology & Simulation, Technische Universität Darmstadt, 64287 Darmstadt, Germany
| | - Fran Bačić Toplek
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133 Milano, Italy
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Lu X, Zhong L, Lindell E, Veanes M, Guo J, Zhao M, Salehi M, Swartling FJ, Chen X, Sjöblom T, Zhang X. Identification of ATF3 as a novel protective signature of quiescent colorectal tumor cells. Cell Death Dis 2023; 14:676. [PMID: 37833290 PMCID: PMC10576032 DOI: 10.1038/s41419-023-06204-1] [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: 07/06/2023] [Revised: 09/20/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023]
Abstract
Colorectal cancer (CRC) is the third most common cancer and the second leading cause of death in the world. In most cases, drug resistance and tumor recurrence are ultimately inevitable. One obstacle is the presence of chemotherapy-insensitive quiescent cancer cells (QCCs). Identification of unique features of QCCs may facilitate the development of new targeted therapeutic strategies to eliminate tumor cells and thereby delay tumor recurrence. Here, using single-cell RNA sequencing, we classified proliferating and quiescent cancer cell populations in the human colorectal cancer spheroid model and identified ATF3 as a novel signature of QCCs that could support cells living in a metabolically restricted microenvironment. RNA velocity further showed a shift from the QCC group to the PCC group indicating the regenerative capacity of the QCCs. Our further results of epigenetic analysis, STING analysis, and evaluation of TCGA COAD datasets build a conclusion that ATF3 can interact with DDIT4 and TRIB3 at the transcriptional level. In addition, decreasing the expression level of ATF3 could enhance the efficacy of 5-FU on CRC MCTS models. In conclusion, ATF3 was identified as a novel marker of QCCs, and combining conventional drugs targeting PCCs with an option to target QCCs by reducing ATF3 expression levels may be a promising strategy for more efficient removal of tumor cells.
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Affiliation(s)
- Xi Lu
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Lei Zhong
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
- Department of Pharmacy, Personalized Drug Therapy Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, Sichuan, China
| | - Emma Lindell
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Margus Veanes
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Jing Guo
- Centre for Computational Biology, Duke-NUS Medical School, 8 College Road, 169857, Singapore, Singapore
| | - Miao Zhao
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Maede Salehi
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Fredrik J Swartling
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Xingqi Chen
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Tobias Sjöblom
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Xiaonan Zhang
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
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Deng M, Wang X, Xiong Z, Tang P. Control of RNA degradation in cell fate decision. Front Cell Dev Biol 2023; 11:1164546. [PMID: 37025171 PMCID: PMC10070868 DOI: 10.3389/fcell.2023.1164546] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 03/03/2023] [Indexed: 04/08/2023] Open
Abstract
Cell fate is shaped by a unique gene expression program, which reflects the concerted action of multilayered precise regulation. Substantial research attention has been paid to the contribution of RNA biogenesis to cell fate decisions. However, increasing evidence shows that RNA degradation, well known for its function in RNA processing and the surveillance of aberrant transcripts, is broadly engaged in cell fate decisions, such as maternal-to-zygotic transition (MZT), stem cell differentiation, or somatic cell reprogramming. In this review, we first look at the diverse RNA degradation pathways in the cytoplasm and nucleus. Then, we summarize how selective transcript clearance is regulated and integrated into the gene expression regulation network for the establishment, maintenance, and exit from a special cellular state.
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Affiliation(s)
- Mingqiang Deng
- Center for Cell Lineage and Development, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- Key Laboratory of Biological Targeting Diagnosis, Therapy and Rehabilitation of Guangdong Higher Education Institutes, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiwei Wang
- Guangzhou Laboratory, Guangzhou, Guangdong, China
| | - Zhi Xiong
- Center for Cell Lineage and Development, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health GuangDong Laboratory), Guangzhou, China
| | - Peng Tang
- Center for Cell Lineage and Development, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- *Correspondence: Peng Tang,
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Heijkants RC, Teunisse AFAS, de Jong D, Glinkina K, Mei H, Kielbasa SM, Szuhai K, Jochemsen AG. MDMX Regulates Transcriptional Activity of p53 and FOXO Proteins to Stimulate Proliferation of Melanoma Cells. Cancers (Basel) 2022; 14:cancers14184482. [PMID: 36139642 PMCID: PMC9496676 DOI: 10.3390/cancers14184482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/25/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary We have investigated the transcriptional changes occurring in uveal and cutaneous melanoma cell lines upon depletion of MDMX (aka:MDM4). Computational analyses of the mRNAs/genes affected upon MDMX depletion determined that many were containing a p53-bindingsite, but even more contained a FOX recognition site(s). Since connections between MDM2 and FOXO1 had already been published, we investigated whether indeed a subset of the MDMX-regulated genes are dependent on FOXO1/FOXO3 expression. Indeed, a number of such target genes, i.e., PIK3IP1, MXD4 and ZMAT3, were found to be FOXO target genes in our cell models. Some of these genes were recently identified as indirect p53-target genes, and their expression was found to be regulated by RFX7 transcription factor, which was found activated upon pharmacological activation of p53, e.g., by Nutlin-3. However, a clear involvement of RFX7 in our model could not be established, but an interplay between FOXO and RFX7 factors seems evident. Abstract The tumor suppressor protein p53 has an important role in cell-fate determination. In cancer cells, the activity of p53 is frequently repressed by high levels of MDMX and/or MDM2. MDM2 is a ubiquitin ligase whose activity results in ubiquitin- and proteasome-dependent p53 degradation, while MDMX inhibits p53-activated transcription by shielding the p53 transactivation domain. Interestingly, the oncogenic functions of MDMX appear to be more wide-spread than inhibition of p53. The present study aimed to elucidate the MDMX-controlled transcriptome. Therefore, we depleted MDMX with four distinct shRNAs from a high MDMX expressing uveal melanoma cell line and determined the effect on the transcriptome by RNAseq. Biological function analyses indicate the inhibition of the cell cycle regulatory genes and stimulation of cell death activating genes upon MDMX depletion. Although the inhibition of p53 activity clearly contributes to the transcription regulation controlled by MDMX, it appeared that the transcriptional regulation of multiple genes did not only rely on p53 expression. Analysis of gene regulatory networks indicated a role for Forkhead box (FOX) transcription factors. Depletion of FOXO proteins partly prevented the transcriptional changes upon MDMX depletion. Furthermore, depletion of FOXO proteins relatively diminished the growth inhibition upon MDMX knockdown, although the knockdown of the FOXO transcription factors also reduces cell growth. In conclusion, the p53-independent oncogenic functions of MDMX could be partially explained by its regulation of FOXO activity.
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Affiliation(s)
- Renier C. Heijkants
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Amina F. A. S. Teunisse
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Danielle de Jong
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Kseniya Glinkina
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Hailiang Mei
- Sequencing Analysis Support Core, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Szymon M. Kielbasa
- Sequencing Analysis Support Core, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
- Department of Medical Statistics and Bioinformatics, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Karoly Szuhai
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Aart G. Jochemsen
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
- Correspondence:
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A Poxvirus Decapping Enzyme Colocalizes with Mitochondria To Regulate RNA Metabolism and Translation and Promote Viral Replication. mBio 2022; 13:e0030022. [PMID: 35435699 PMCID: PMC9239241 DOI: 10.1128/mbio.00300-22] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Decapping enzymes remove the 5′ cap of eukaryotic mRNA, leading to accelerated RNA decay. They are critical in regulating RNA homeostasis and play essential roles in many cellular and life processes. They are encoded in many organisms and viruses, including vaccinia virus, which was used as the vaccine to eradicate smallpox. Vaccinia virus encodes two decapping enzymes, D9 and D10, that are necessary for efficient viral replication and pathogenesis. However, the underlying molecular mechanisms regulating vaccinia decapping enzymes’ functions are still largely elusive. Here, we demonstrated that vaccinia D10 almost exclusively colocalized with mitochondria. As mitochondria are highly mobile cellular organelles, colocalization of D10 with mitochondria can concentrate D10 locally and mobilize it to efficiently decap mRNAs. Mitochondria were barely observed in “viral factories,” where viral transcripts are produced, suggesting that mitochondrial colocalization provides a spatial mechanism to preferentially decap cellular mRNAs over viral mRNAs. We identified three amino acids at the N terminus of D10 that are required for D10’s mitochondrial colocalization. Loss of mitochondrial colocalization significantly impaired viral replication, reduced D10’s ability to remove the RNA 5′ cap during infection, and diminished D10’s gene expression shutoff and mRNA translation promotion abilities.
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Abstract
The 5'-terminal cap is a fundamental determinant of eukaryotic gene expression which facilitates cap-dependent translation and protects mRNAs from exonucleolytic degradation. Enzyme-directed hydrolysis of the cap (decapping) decisively affects mRNA expression and turnover, and is a heavily regulated event. Following the identification of the decapping holoenzyme (Dcp1/2) over two decades ago, numerous studies revealed the complexity of decapping regulation across species and cell types. A conserved set of Dcp1/2-associated proteins, implicated in decapping activation and molecular scaffolding, were identified through genetic and molecular interaction studies, and yet their exact mechanisms of action are only emerging. In this review, we discuss the prevailing models on the roles and assembly of decapping co-factors, with considerations of conservation across species and comparison across physiological contexts. We next discuss the functional convergences of decapping machineries with other RNA-protein complexes in cytoplasmic P bodies and compare current views on their impact on mRNA stability and translation. Lastly, we review the current models of decapping activation and highlight important gaps in our current understanding.
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Affiliation(s)
- Elva Vidya
- Goodman Cancer Institute, McGill University, Montréal, QC, Canada
- Department of Biochemistry, McGill University, Montréal, QC, Canada
| | - Thomas F. Duchaine
- Goodman Cancer Institute, McGill University, Montréal, QC, Canada
- Department of Biochemistry, McGill University, Montréal, QC, Canada
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12
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miR-199a Targeting PNRC1 to Promote Keratinocyte Proliferation and Invasion in Cholesteatoma. BIOMED RESEARCH INTERNATIONAL 2021; 2021:1442093. [PMID: 34825000 PMCID: PMC8610695 DOI: 10.1155/2021/1442093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 10/21/2021] [Accepted: 10/27/2021] [Indexed: 12/14/2022]
Abstract
Introduction miR-199a has been reported as an oncogene of various cancers. However, the biological function and regulatory mechanism of miR-199a in keratinocytes of cholesteatoma are still unclear. Methods Detection by qRT-PCR was conducted on miR-199a's expression in both thirty pairs of cholesteatoma tissues and normal skins. For characterizing the function of miR-199a, this research adopted transwell assay, wound healing assay, and CCK8 assays. Under the support of qRT-PCR, efforts were made to investigate the relative expression of candidate target genes. Moreover, the evaluation of the targeting relationship between miR-199a and the candidate target gene was conducted with the dual-luciferase reporter assay. Results The upregulation of miR-199a was found in cholesteatoma tissues, which facilitated the proliferation, migration, and invasion of HaCaT cells, while its downregulation caused opposite results. Conclusions The findings of the present research offer more insights into the molecular mechanism of cholesteatoma progression.
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13
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Olivieri JE, Dehghannasiri R, Wang PL, Jang S, de Morree A, Tan SY, Ming J, Ruohao Wu A, Quake SR, Krasnow MA, Salzman J. RNA splicing programs define tissue compartments and cell types at single-cell resolution. eLife 2021; 10:e70692. [PMID: 34515025 PMCID: PMC8563012 DOI: 10.7554/elife.70692] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 09/10/2021] [Indexed: 02/05/2023] Open
Abstract
The extent splicing is regulated at single-cell resolution has remained controversial due to both available data and methods to interpret it. We apply the SpliZ, a new statistical approach, to detect cell-type-specific splicing in >110K cells from 12 human tissues. Using 10X Chromium data for discovery, 9.1% of genes with computable SpliZ scores are cell-type-specifically spliced, including ubiquitously expressed genes MYL6 and RPS24. These results are validated with RNA FISH, single-cell PCR, and Smart-seq2. SpliZ analysis reveals 170 genes with regulated splicing during human spermatogenesis, including examples conserved in mouse and mouse lemur. The SpliZ allows model-based identification of subpopulations indistinguishable based on gene expression, illustrated by subpopulation-specific splicing of classical monocytes involving an ultraconserved exon in SAT1. Together, this analysis of differential splicing across multiple organs establishes that splicing is regulated cell-type-specifically.
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Affiliation(s)
- Julia Eve Olivieri
- Institute for Computational and Mathematical Engineering, Stanford UniversityStanfordUnited States
- Department of Biomedical Data Science, Stanford UniversityStanfordUnited States
- Department of Biochemistry, Stanford UniversityStanfordUnited States
| | - Roozbeh Dehghannasiri
- Department of Biomedical Data Science, Stanford UniversityStanfordUnited States
- Department of Biochemistry, Stanford UniversityStanfordUnited States
| | - Peter L Wang
- Department of Biochemistry, Stanford UniversityStanfordUnited States
| | - SoRi Jang
- Department of Biochemistry, Stanford UniversityStanfordUnited States
| | - Antoine de Morree
- Department of Neurology and Neurological Sciences, Stanford University School of MedicineStanfordUnited States
| | - Serena Y Tan
- Department of Pathology, Stanford University Medical CenterStanfordUnited States
| | - Jingsi Ming
- Academy for Statistics and Interdisciplinary Sciences, Faculty of Economics and Management,East China Normal UniversityShanghaiChina
- Department of Mathematics, The Hong Kong University of Science and TechnologyHong KongChina
| | - Angela Ruohao Wu
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and TechnologyHong KongChina
| | - Stephen R Quake
- Chan Zuckerberg BiohubSan FranciscoUnited States
- Department of Bioengineering, Stanford UniversityStanfordUnited States
| | - Mark A Krasnow
- Department of Biochemistry, Stanford UniversityStanfordUnited States
| | - Julia Salzman
- Department of Biomedical Data Science, Stanford UniversityStanfordUnited States
- Department of Biochemistry, Stanford UniversityStanfordUnited States
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14
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Coronel L, Riege K, Schwab K, Förste S, Häckes D, Semerau L, Bernhart SH, Siebert R, Hoffmann S, Fischer M. Transcription factor RFX7 governs a tumor suppressor network in response to p53 and stress. Nucleic Acids Res 2021; 49:7437-7456. [PMID: 34197623 PMCID: PMC8287911 DOI: 10.1093/nar/gkab575] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/25/2021] [Accepted: 06/21/2021] [Indexed: 12/22/2022] Open
Abstract
Despite its prominence, the mechanisms through which the tumor suppressor p53 regulates most genes remain unclear. Recently, the regulatory factor X 7 (RFX7) emerged as a suppressor of lymphoid neoplasms, but its regulation and target genes mediating tumor suppression remain unknown. Here, we identify a novel p53-RFX7 signaling axis. Integrative analysis of the RFX7 DNA binding landscape and the RFX7-regulated transcriptome in three distinct cell systems reveals that RFX7 directly controls multiple established tumor suppressors, including PDCD4, PIK3IP1, MXD4, and PNRC1, across cell types and is the missing link for their activation in response to p53 and stress. RFX7 target gene expression correlates with cell differentiation and better prognosis in numerous cancer types. Interestingly, we find that RFX7 sensitizes cells to Doxorubicin by promoting apoptosis. Together, our work establishes RFX7’s role as a ubiquitous regulator of cell growth and fate determination and a key node in the p53 transcriptional program.
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Affiliation(s)
- Luis Coronel
- Computational Biology Group, Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany
| | - Konstantin Riege
- Computational Biology Group, Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany
| | - Katjana Schwab
- Computational Biology Group, Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany
| | - Silke Förste
- Computational Biology Group, Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany
| | - David Häckes
- Computational Biology Group, Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany
| | - Lena Semerau
- Computational Biology Group, Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany
| | - Stephan H Bernhart
- Transcriptome Bioinformatics Group, Department of Computer Science and Interdisciplinary Center for Bioinformatics, Leipzig University, Härtelstraße 16-18, 04107 Leipzig, Germany
| | - Reiner Siebert
- Institute of Human Genetics, Ulm University and Ulm University Medical Center, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Steve Hoffmann
- Computational Biology Group, Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany
| | - Martin Fischer
- Computational Biology Group, Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany
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15
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Gantert T, Henkel F, Wurmser C, Oeckl J, Fischer L, Haid M, Adamski J, Esser-von Bieren J, Klingenspor M, Fromme T. Fibroblast growth factor induced Ucp1 expression in preadipocytes requires PGE2 biosynthesis and glycolytic flux. FASEB J 2021; 35:e21572. [PMID: 33826782 DOI: 10.1096/fj.202002795r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/06/2021] [Accepted: 03/19/2021] [Indexed: 12/24/2022]
Abstract
High uncoupling protein 1 (Ucp1) expression is a characteristic of differentiated brown adipocytes and is linked to adipogenic differentiation. Paracrine fibroblast growth factor 8b (FGF8b) strongly induces Ucp1 transcription in white adipocytes independent of adipogenesis. Here, we report that FGF8b and other paracrine FGFs act on brown and white preadipocytes to upregulate Ucp1 expression via a FGFR1-MEK1/2-ERK1/2 axis, independent of adipogenesis. Transcriptomic analysis revealed an upregulation of prostaglandin biosynthesis and glycolysis upon Fgf8b treatment of preadipocytes. Oxylipin measurement by LC-MS/MS in FGF8b conditioned media identified prostaglandin E2 as a putative mediator of FGF8b induced Ucp1 transcription. RNA interference and pharmacological inhibition of the prostaglandin E2 biosynthetic pathway confirmed that PGE2 is causally involved in the control over Ucp1 transcription. Importantly, impairment of or failure to induce glycolytic flux blunted the induction of Ucp1, even in the presence of PGE2 . Lastly, a screening of transcription factors identified Nrf1 and Hes1 as required regulators of FGF8b induced Ucp1 expression. Thus, we conclude that paracrine FGFs co-regulate prostaglandin and glucose metabolism to induce Ucp1 expression in a Nrf1/Hes1-dependent manner in preadipocytes, revealing a novel regulatory network in control of Ucp1 expression in a formerly unrecognized cell type.
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Affiliation(s)
- Thomas Gantert
- Department of Molecular Nutritional Medicine, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
| | - Fiona Henkel
- Center of Allergy and Environment (ZAUM), Helmholtz Center Munich, Technical University of Munich, Munich, Germany
| | - Christine Wurmser
- Department of Animal Breeding, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
| | - Josef Oeckl
- Department of Molecular Nutritional Medicine, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
| | - Lena Fischer
- Department of Molecular Nutritional Medicine, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
| | - Mark Haid
- Research Unit Molecular Endocrinology and Metabolism, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Jerzy Adamski
- Research Unit Molecular Endocrinology and Metabolism, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany.,German Center for Diabetes Research (DZD), Neuherberg, Germany.,Institute of Experimental Genetics, Center of Life and Food Sciences Weihenstephan, Technical University of Munich, Freising, Germany.,Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Julia Esser-von Bieren
- Center of Allergy and Environment (ZAUM), Helmholtz Center Munich, Technical University of Munich, Munich, Germany
| | - Martin Klingenspor
- Department of Molecular Nutritional Medicine, TUM School of Life Sciences, Technical University of Munich, Freising, Germany.,EKFZ-Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany.,ZIEL-Institute for Food & Health, Technical University of Munich, Freising, Germany
| | - Tobias Fromme
- Department of Molecular Nutritional Medicine, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
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16
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Zhang Q, Yan YF, Lv Q, Li YJ, Wang RR, Sun GB, Pan L, Hu JX, Xie N, Zhang C, Tian BC, Jiao F, Xu S, Wang PY, Xie SY. miR-4293 upregulates lncRNA WFDC21P by suppressing mRNA-decapping enzyme 2 to promote lung carcinoma proliferation. Cell Death Dis 2021; 12:735. [PMID: 34301920 PMCID: PMC8302752 DOI: 10.1038/s41419-021-04021-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 07/10/2021] [Accepted: 07/12/2021] [Indexed: 12/19/2022]
Abstract
Non-coding RNAs (ncRNAs) involve in diverse biological processes by post-transcriptional regulation of gene expression. Emerging evidence shows that miRNA-4293 plays a significant role in the development of non-small cell lung cancer. However, the oncogenic functions of miR-4293 have not been studied. Our results demonstrated that miR-4293 expression is markedly enhanced in lung carcinoma tissue and cells. Moreover, miR-4293 promotes tumor cell proliferation and metastasis but suppresses apoptosis. Mechanistic investigations identified mRNA-decapping enzyme 2 (DCP2) as a target of miR-4293 and its expression is suppressed by miR-4293. DCP2 can directly or indirectly bind to WFDC21P and downregulates its expression. Consequently, miR-4293 can further promote WFDC21P expression by regulating DCP2. With a positive correlation to miR-4293 expression, WFDC21P also plays an oncogenic role in lung carcinoma. Furthermore, knockdown of WFDC21P results in functional attenuation of miR-4293 on tumor promotion. In vivo xenograft growth is also promoted by both miR-4293 and WFDC21P. Overall, our results establish oncogenic roles for both miR-4293 and WFDC21P and demonstrate that interactions between miRNAs and lncRNAs through DCP2 are important in the regulation of carcinoma pathogenesis. These results provided a valuable theoretical basis for the discovery of lung carcinoma therapeutic targets and diagnostic markers based on miR-4293 and WFDC21P.
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MESH Headings
- Adult
- Aged
- Animals
- Apoptosis/genetics
- Base Sequence
- Carcinogenesis/genetics
- Carcinogenesis/pathology
- Carcinoma, Non-Small-Cell Lung/genetics
- Carcinoma, Non-Small-Cell Lung/pathology
- Cell Line, Tumor
- Cell Movement/genetics
- Cell Proliferation/genetics
- Female
- Gene Expression Regulation, Neoplastic
- Gene Knockdown Techniques
- Humans
- Lung Neoplasms/genetics
- Lung Neoplasms/pathology
- Male
- Mice, Inbred BALB C
- Mice, Nude
- MicroRNAs/genetics
- MicroRNAs/metabolism
- Middle Aged
- Models, Biological
- Protein Binding
- RNA, Long Noncoding/genetics
- RNA, Long Noncoding/metabolism
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- STAT3 Transcription Factor/metabolism
- Up-Regulation/genetics
- Mice
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Affiliation(s)
- Qian Zhang
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, YanTai, ShanDong, P. R. China
| | - Yun-Fei Yan
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, YanTai, ShanDong, P. R. China
| | - Qing Lv
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, YanTai, ShanDong, P. R. China
| | - You-Jie Li
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, YanTai, ShanDong, P. R. China
| | - Ran-Ran Wang
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, YanTai, ShanDong, P. R. China
| | - Guang-Bin Sun
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, YanTai, ShanDong, P. R. China
| | - Li Pan
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, YanTai, ShanDong, P. R. China
| | - Jin-Xia Hu
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, YanTai, ShanDong, P. R. China
| | - Ning Xie
- Department of Chest Surgery, YanTaiShan Hospital, YanTai, ShanDong, P. R. China
| | - Can Zhang
- Genetics and Aging Research Unit, Mass General Institute for Neurodegenerative Diseases (MIND), Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
| | - Bao-Cheng Tian
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, YanTai, ShanDong, P. R. China
| | - Fei Jiao
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, YanTai, ShanDong, P. R. China
| | - Sen Xu
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, YanTai, ShanDong, P. R. China
| | - Ping-Yu Wang
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, YanTai, ShanDong, P. R. China.
| | - Shu-Yang Xie
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, YanTai, ShanDong, P. R. China.
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17
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Wang S, Guo Y, Zhang X, Wang C. miR‑654‑5p inhibits autophagy by targeting ATG7 via mTOR signaling in intervertebral disc degeneration. Mol Med Rep 2021; 23:444. [PMID: 33846806 PMCID: PMC8060800 DOI: 10.3892/mmr.2021.12083] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 02/15/2021] [Indexed: 01/07/2023] Open
Abstract
Intervertebral disc degeneration (IDD) is a common chronic disease characterized by the loss of extracellular matrix (ECM) in the nucleus pulposus (NP). Accumulating evidence has revealed that abnormal expression of microRNAs (miRs) is closely associated with IDD development. The present study aimed to investigate the precise role and possible mechanism underlying the effects of miR‑654‑5p in the pathogenesis of IDD. NP cells were isolated from patients with IDD. Monodansylcadaverine staining was conducted to reveal cell autophagy, while western blotting was performed to detect the expression of ECM‑related proteins in NP cells. Luciferase reporter and RNA immunoprecipitation assays were conducted to identify the binding between RNAs. The results demonstrated that miR‑654‑5p was significantly upregulated in degenerated NP tissues from patients with IDD and high miR‑654‑5p expression was positively associated with disc degeneration grade. Functional assays suggested that miR‑654‑5p facilitated ECM degradation by increasing the expression levels of MMP‑3, MMP‑9 and MMP‑13, as well as decreasing collagen I, collagen II, SOX9 and aggrecan expression by inhibiting autophagy. Furthermore, autophagy‑related gene 7 (ATG7) was verified as a direct downstream target gene of miR‑654‑5p. miR‑654‑5p could bind to the 3' untranslated region of ATG7 to inhibit its mRNA expression and further reduce its translation. Notably, ATG7 knockdown abrogated the effects of the miR‑654‑5p inhibitor on ECM degradation and autophagy regulation. Furthermore, miR‑654‑5p inhibited autophagy in NP cells by increasing the protein expression levels of phosphorylated (p)‑PI3K, p‑AKT and p‑mTOR in an ATG7‑dependent manner. In conclusion, the results of the present study revealed that miR‑654‑5p may enhance ECM degradation via inhibition of autophagy by targeting ATG7 to activate the PI3K/AKT/mTOR signaling pathway. These findings may provide novel insights into the treatment of IDD.
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Affiliation(s)
- Shanzheng Wang
- Department of Orthopaedics, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Yudong Guo
- Department of Orthopaedics, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Xuejun Zhang
- Department of Orthopaedics, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Chen Wang
- Department of Orthopaedics, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu 210009, P.R. China
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18
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Castro-Piedras I, Sharma M, Brelsfoard J, Vartak D, Martinez EG, Rivera C, Molehin D, Bright RK, Fokar M, Guindon J, Pruitt K. Nuclear Dishevelled targets gene regulatory regions and promotes tumor growth. EMBO Rep 2021; 22:e50600. [PMID: 33860601 DOI: 10.15252/embr.202050600] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 03/03/2021] [Accepted: 03/11/2021] [Indexed: 12/18/2022] Open
Abstract
Dishevelled (DVL) critically regulates Wnt signaling and contributes to a wide spectrum of diseases and is important in normal and pathophysiological settings. However, how it mediates diverse cellular functions remains poorly understood. Recent discoveries have revealed that constitutive Wnt pathway activation contributes to breast cancer malignancy, but the mechanisms by which this occurs are unknown and very few studies have examined the nuclear role of DVL. Here, we have performed DVL3 ChIP-seq analyses and identify novel target genes bound by DVL3. We show that DVL3 depletion alters KMT2D binding to novel targets and changes their epigenetic marks and mRNA levels. We further demonstrate that DVL3 inhibition leads to decreased tumor growth in two different breast cancer models in vivo. Our data uncover new DVL3 functions through its regulation of multiple genes involved in developmental biology, antigen presentation, metabolism, chromatin remodeling, and tumorigenesis. Overall, our study provides unique insight into the function of nuclear DVL, which helps to define its role in mediating aberrant Wnt signaling.
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Affiliation(s)
- Isabel Castro-Piedras
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Monica Sharma
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Jennifer Brelsfoard
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA.,Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - David Vartak
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Edgar G Martinez
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Cristian Rivera
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Deborah Molehin
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Robert K Bright
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Mohamed Fokar
- Center for Biotechnology and Genomics, Texas Tech University, Lubbock, TX, USA
| | - Josee Guindon
- Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX, USA.,Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Kevin Pruitt
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
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19
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Liu X, Chai Y, Liu G, Su W, Guo Q, Lv X, Gao P, Yu B, Ferbeyre G, Cao X, Wan M. Osteoclasts protect bone blood vessels against senescence through the angiogenin/plexin-B2 axis. Nat Commun 2021; 12:1832. [PMID: 33758201 PMCID: PMC7987975 DOI: 10.1038/s41467-021-22131-1] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 02/27/2021] [Indexed: 01/31/2023] Open
Abstract
Synthetic glucocorticoids (GCs), one of the most effective treatments for chronic inflammatory and autoimmune conditions in children, have adverse effects on the growing skeleton. GCs inhibit angiogenesis in growing bone, but the underlying mechanisms remain unclear. Here, we show that GC treatment in young mice induces vascular endothelial cell senescence in metaphysis of long bone, and that inhibition of endothelial cell senescence improves GC-impaired bone angiogenesis with coupled osteogenesis. We identify angiogenin (ANG), a ribonuclease with pro-angiogenic activity, secreted by osteoclasts as a key factor for protecting the neighboring vascular cells against senescence. ANG maintains the proliferative activity of endothelial cells through plexin-B2 (PLXNB2)-mediated transcription of ribosomal RNA (rRNA). GC treatment inhibits ANG production by suppressing osteoclast formation in metaphysis, resulting in impaired endothelial cell rRNA transcription and subsequent cellular senescence. These findings reveal the role of metaphyseal blood vessel senescence in mediating the action of GCs on growing skeleton and establish the ANG/PLXNB2 axis as a molecular basis for the osteoclast-vascular interplay in skeletal angiogenesis.
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MESH Headings
- Animals
- Apoptosis/drug effects
- Bone Development/drug effects
- Cell Proliferation/drug effects
- Cellular Senescence/drug effects
- Cellular Senescence/genetics
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Glucocorticoids/pharmacology
- Human Umbilical Vein Endothelial Cells
- Humans
- Immunohistochemistry
- In Situ Hybridization, Fluorescence
- Methylprednisolone/pharmacology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Neovascularization, Pathologic
- Neovascularization, Physiologic/drug effects
- Nerve Tissue Proteins/genetics
- Nerve Tissue Proteins/metabolism
- Osteoclasts/drug effects
- Osteoclasts/enzymology
- Osteoclasts/metabolism
- Osteogenesis/drug effects
- RNA, Ribosomal/biosynthesis
- RNA, Small Interfering
- Recombinant Proteins
- Ribonuclease, Pancreatic/genetics
- Ribonuclease, Pancreatic/metabolism
- Ribonuclease, Pancreatic/pharmacology
- Signal Transduction/drug effects
- Signal Transduction/genetics
- Tomography Scanners, X-Ray Computed
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Affiliation(s)
- Xiaonan Liu
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yu Chai
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Guanqiao Liu
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Weiping Su
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Qiaoyue Guo
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Xiao Lv
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Peisong Gao
- Johns Hopkins Asthma & Allergy Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Bin Yu
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Gerardo Ferbeyre
- Department of Biochemistry and Molecular Medicine, Université de Montréal, Montreal, QC, Canada
| | - Xu Cao
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Mei Wan
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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20
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Cai Y, Li Y, Shi C, Zhang Z, Xu J, Sun B. LncRNA OTUD6B-AS1 inhibits many cellular processes in colorectal cancer by sponging miR-21-5p and regulating PNRC2. Hum Exp Toxicol 2021; 40:1463-1473. [PMID: 33686892 DOI: 10.1177/0960327121997976] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Accumulating evidence has revealed that long noncoding RNAs (lncRNAs) play essential roles in regulating cellular process of various cancers. There have been many studies on the biological functions of lncRNAs in colorectal cancer (CRC). In this research, we explored the role and mechanism of lncRNA ovarian tumor domain containing 6B antisense RNA1 (OTUD6B-AS1) in CRC. Here, we detected OTUD6B-AS1 expression in CRC tissues and cells by RT-qPCR. Functional experiments were performed to test alterations in different cellular processes. Moreover, to verify the binding ability among the indicated RNA molecules, we carried out RIP, RNA pull-down and luciferase reporter assays. According to our data, OTUD6B-AS1 expression was low in CRC tissues and cells. Functionally, overexpression of OTUD6B-AS1 inhibited cell proliferation, migration, invasion and EMT, and promoted cell apoptosis. Bioinformatic analysis and mechanistical experiments confirmed that OTUD6B-AS1 could act as a competitive endogenous RNA (ceRNA) to upregulate Proline-Rich Nuclear Receptor Coactivator 2 (PNRC2) expression by sequestering miR-21-5p. Further rescue experiments validated the inhibitory function of the OTUD6B-AS1/miR-21-5p/PNRC2 axis in cellular process of CRC. Overall, OTUD6B-AS1 inhibits cellular development in CRC by sponging miR-21-5p and upregulating PNRC2, providing a novel insight into the exploration on CRC treatment.
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Affiliation(s)
- Y Cai
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Y Li
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - C Shi
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Z Zhang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - J Xu
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - B Sun
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
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21
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Mishra R, Kunar R, Mandal L, Alone DP, Chandrasekharan S, Tiwari AK, Tapadia MG, Mukherjee A, Roy JK. A Forward Genetic Approach to Mapping a P-Element Second Site Mutation Identifies DCP2 as a Novel Tumor Suppressor in Drosophila melanogaster. G3 (BETHESDA, MD.) 2020; 10:2601-2618. [PMID: 32591349 PMCID: PMC7407449 DOI: 10.1534/g3.120.401501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 06/23/2020] [Indexed: 11/18/2022]
Abstract
The use of transposons to create mutations has been the cornerstone of Drosophila genetics in the past few decades. Second-site mutations caused by transpositions are often devoid of transposons and thereby affect subsequent analyses. In a P-element mutagenesis screen, a second site mutation was identified on chromosome 3, wherein the homozygous mutants exhibit classic hallmarks of tumor suppressor mutants, including brain tumor and lethality; hence the mutant line was initially named as lethal (3) tumorous brain [l(3)tb]. Classical genetic approaches relying on meiotic recombination and subsequent complementation with chromosomal deletions and gene mutations mapped the mutation to CG6169, the mRNA decapping protein 2 (DCP2), on the left arm of the third chromosome (3L). Thus the mutation was renamed as DCP2l(3)tb Fine mapping of the mutation further identified the presence of a Gypsy-LTR like sequence in the 5'UTR coding region of DCP2, along with the expansion of the adjacent upstream intergenic AT-rich sequence. The mutant phenotypes are rescued by the introduction of a functional copy of DCP2 in the mutant background, thereby establishing the causal role of the mutation and providing a genetic validation of the allelism. With the increasing repertoire of genes being associated with tumor biology, this is the first instance of mRNA decapping protein being implicated in Drosophila tumorigenesis. Our findings, therefore, imply a plausible role for the mRNA degradation pathway in tumorigenesis and identify DCP2 as a potential candidate for future explorations of cell cycle regulatory mechanisms.
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Affiliation(s)
- Rakesh Mishra
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Rohit Kunar
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Lolitika Mandal
- Department of Biological Sciences, Indian Institute of Science Education and Research Mohali, Manauli 140306, India
| | - Debasmita Pankaj Alone
- School of Biological Sciences, National Institute of Science Education and Research, HBNI, Bhimpur-Padanpur, Jatni, 752020 Khurda
| | - Shanti Chandrasekharan
- Division of Genetics, Indian Agricultural Research Institute, Pusa, New Delhi, Delhi, 110012 India
| | - Anand Krishna Tiwari
- School of Biological Sciences and Biotechnology, Indian Institute of Advanced Research, Koba, Gandhinagar 382 007, India
| | - Madhu Gwaldas Tapadia
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Ashim Mukherjee
- Department of Molecular and Human Genetics, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Jagat Kumar Roy
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
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22
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Gaviraghi M, Vivori C, Tonon G. How Cancer Exploits Ribosomal RNA Biogenesis: A Journey beyond the Boundaries of rRNA Transcription. Cells 2019; 8:cells8091098. [PMID: 31533350 PMCID: PMC6769540 DOI: 10.3390/cells8091098] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/13/2019] [Accepted: 09/15/2019] [Indexed: 02/06/2023] Open
Abstract
The generation of new ribosomes is a coordinated process essential to sustain cell growth. As such, it is tightly regulated according to cell needs. As cancer cells require intense protein translation to ensure their enhanced growth rate, they exploit various mechanisms to boost ribosome biogenesis. In this review, we will summarize how oncogenes and tumor suppressors modulate the biosynthesis of the RNA component of ribosomes, starting from the description of well-characterized pathways that converge on ribosomal RNA transcription while including novel insights that reveal unexpected regulatory networks hacked by cancer cells to unleash ribosome production.
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Affiliation(s)
- Marco Gaviraghi
- Experimental Imaging Center; Ospedale San Raffaele, 20132 Milan, Italy.
- Functional Genomics of Cancer Unit, Division of Experimental Oncology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132 Milan, Italy.
| | - Claudia Vivori
- Centre for Genomic Regulation (CRG), The Barcelona Institute for Science and Technology, 08003 Barcelona, Spain.
| | - Giovanni Tonon
- Functional Genomics of Cancer Unit, Division of Experimental Oncology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132 Milan, Italy.
- Center for Translational Genomics and Bioinformatics, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132 Milan, Italy.
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23
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Ortiz-Sánchez P, Villalba-Orero M, López-Olañeta MM, Larrasa-Alonso J, Sánchez-Cabo F, Martí-Gómez C, Camafeita E, Gómez-Salinero JM, Ramos-Hernández L, Nielsen PJ, Vázquez J, Müller-McNicoll M, García-Pavía P, Lara-Pezzi E. Loss of SRSF3 in Cardiomyocytes Leads to Decapping of Contraction-Related mRNAs and Severe Systolic Dysfunction. Circ Res 2019; 125:170-183. [PMID: 31145021 PMCID: PMC6615931 DOI: 10.1161/circresaha.118.314515] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
RATIONALE RBPs (RNA binding proteins) play critical roles in the cell by regulating mRNA transport, splicing, editing, and stability. The RBP SRSF3 (serine/arginine-rich splicing factor 3) is essential for blastocyst formation and for proper liver development and function. However, its role in the heart has not been explored. OBJECTIVE To investigate the role of SRSF3 in cardiac function. METHODS AND RESULTS Cardiac SRSF3 expression was high at mid gestation and decreased during late embryonic development. Mice lacking SRSF3 in the embryonic heart showed impaired cardiomyocyte proliferation and died in utero. In the adult heart, SRSF3 expression was reduced after myocardial infarction, suggesting a possible role in cardiac homeostasis. To determine the role of this RBP in the adult heart, we used an inducible, cardiomyocyte-specific SRSF3 knockout mouse model. After SRSF3 depletion in cardiomyocytes, mice developed severe systolic dysfunction that resulted in death within 8 days. RNA-Seq analysis revealed downregulation of mRNAs encoding sarcomeric and calcium handling proteins. Cardiomyocyte-specific SRSF3 knockout mice also showed evidence of alternative splicing of mTOR (mammalian target of rapamycin) mRNA, generating a shorter protein isoform lacking catalytic activity. This was associated with decreased phosphorylation of 4E-BP1 (eIF4E-binding protein 1), a protein that binds to eIF4E (eukaryotic translation initiation factor 4E) and prevents mRNA decapping. Consequently, we found increased decapping of mRNAs encoding proteins involved in cardiac contraction. Decapping was partially reversed by mTOR activation. CONCLUSIONS We show that cardiomyocyte-specific loss of SRSF3 expression results in decapping of critical mRNAs involved in cardiac contraction. The molecular mechanism underlying this effect likely involves the generation of a short mTOR isoform by alternative splicing, resulting in reduced 4E-BP1 phosphorylation. The identification of mRNA decapping as a mechanism of systolic heart failure may open the way to the development of urgently needed therapeutic tools.
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Affiliation(s)
- Paula Ortiz-Sánchez
- From the Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain (P.O.-S., M.V.-O., M.M.L.-O., J.L.-A., F.S.-C., C.M.-G., E.C., J.M.G.-S., L.R.-H., J.V., E.L.-P.).,Heart Failure and Inherited Cardiac Diseases Unit, Department of Cardiology, Hospital Universitario Puerta de Hierro, Madrid, Spain (P.O.-S., P.G.-P.)
| | - María Villalba-Orero
- From the Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain (P.O.-S., M.V.-O., M.M.L.-O., J.L.-A., F.S.-C., C.M.-G., E.C., J.M.G.-S., L.R.-H., J.V., E.L.-P.)
| | - Marina M López-Olañeta
- From the Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain (P.O.-S., M.V.-O., M.M.L.-O., J.L.-A., F.S.-C., C.M.-G., E.C., J.M.G.-S., L.R.-H., J.V., E.L.-P.)
| | - Javier Larrasa-Alonso
- From the Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain (P.O.-S., M.V.-O., M.M.L.-O., J.L.-A., F.S.-C., C.M.-G., E.C., J.M.G.-S., L.R.-H., J.V., E.L.-P.)
| | - Fátima Sánchez-Cabo
- From the Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain (P.O.-S., M.V.-O., M.M.L.-O., J.L.-A., F.S.-C., C.M.-G., E.C., J.M.G.-S., L.R.-H., J.V., E.L.-P.)
| | - Carlos Martí-Gómez
- From the Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain (P.O.-S., M.V.-O., M.M.L.-O., J.L.-A., F.S.-C., C.M.-G., E.C., J.M.G.-S., L.R.-H., J.V., E.L.-P.)
| | - Emilio Camafeita
- From the Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain (P.O.-S., M.V.-O., M.M.L.-O., J.L.-A., F.S.-C., C.M.-G., E.C., J.M.G.-S., L.R.-H., J.V., E.L.-P.)
| | - Jesús M Gómez-Salinero
- From the Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain (P.O.-S., M.V.-O., M.M.L.-O., J.L.-A., F.S.-C., C.M.-G., E.C., J.M.G.-S., L.R.-H., J.V., E.L.-P.)
| | - Laura Ramos-Hernández
- From the Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain (P.O.-S., M.V.-O., M.M.L.-O., J.L.-A., F.S.-C., C.M.-G., E.C., J.M.G.-S., L.R.-H., J.V., E.L.-P.)
| | - Peter J Nielsen
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany (P.J.N.)
| | - Jesús Vázquez
- From the Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain (P.O.-S., M.V.-O., M.M.L.-O., J.L.-A., F.S.-C., C.M.-G., E.C., J.M.G.-S., L.R.-H., J.V., E.L.-P.).,Centro de Investigacion Biomedica en Red Cardiovascular (CIBERCV), Madrid, Spain (J.V., P.G.-P., E.L.-P)
| | - Michaela Müller-McNicoll
- Goethe-University Frankfurt, Institute of Cell Biology and Neuroscience, Frankfurt/Main, Germany (M.M.-M.)
| | - Pablo García-Pavía
- Heart Failure and Inherited Cardiac Diseases Unit, Department of Cardiology, Hospital Universitario Puerta de Hierro, Madrid, Spain (P.O.-S., P.G.-P.).,Centro de Investigacion Biomedica en Red Cardiovascular (CIBERCV), Madrid, Spain (J.V., P.G.-P., E.L.-P).,Facultad de Ciencias de la Salud, Universidad Francisco de Vitoria (UFV), Pozuelo de Alarcón, Madrid, Spain (P.G.-P.)
| | - Enrique Lara-Pezzi
- From the Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain (P.O.-S., M.V.-O., M.M.L.-O., J.L.-A., F.S.-C., C.M.-G., E.C., J.M.G.-S., L.R.-H., J.V., E.L.-P.).,Centro de Investigacion Biomedica en Red Cardiovascular (CIBERCV), Madrid, Spain (J.V., P.G.-P., E.L.-P).,National Heart and Lung Institute, Imperial College London, United Kingdom (E.L.-P.)
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24
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Lu BS, Yin YW, Zhang YP, Guo PY, Li W, Liu KL. Upregulation of NPL4 promotes bladder cancer cell proliferation by inhibiting DXO destabilization of cyclin D1 mRNA. Cancer Cell Int 2019; 19:149. [PMID: 31164795 PMCID: PMC6543671 DOI: 10.1186/s12935-019-0874-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 05/27/2019] [Indexed: 12/11/2022] Open
Abstract
Background NPL4 is an important cofactor of the valosin-containing protein (VCP)–NPL4–UFD1 complex. The VCP–NPL4–UFD1 has been considered as a ubiquitin proteasome system (UPS) regulator and response to protein degradation. While NPL4 plays important roles in various diseases, little is known about its functions in bladder cancer (BC). Methods MTT assays and colony forming test were performed to evaluate cell proliferation ability and Western blotting was used to detect protein expression. Cyclin D1 mRNA expression was detected using qRT-PCR, and coimmunoprecipitation (CoIP) was used to detect protein–protein interactions. Results NPL4 was upregulated in BC tissue and correlated with poor prognosis. Upregulation of NPL4 promoted cell proliferation while suppression of NPL4 reduced BC cell proliferation. Upregulation of NPL4 led to overexpression of cyclin D1 by enhancing its mRNA stability. Moreover, NPL4 was found to bind directly to DXO and induce its degradation. DXO was downregulated in BC tissue and regulated BC cell proliferation by destabilizing cyclin D1 mRNA. DXO-mediated NPL4 regulated BC cell proliferation by stabilizing cyclin D1 expression. Conclusions The NPL4/DXO/cyclin D1 axis exert crucial role in BC cell growth and is associated with prognosis and may represent a potential therapeutic target for BC.
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Affiliation(s)
- Bao-Sai Lu
- Department of Urology, The Second Hospital of Hebei Medical University, No. 215, Heping West Road, Shijiazhuang, 050000 Hebei People's Republic of China
| | - Yue-Wei Yin
- Department of Urology, The Second Hospital of Hebei Medical University, No. 215, Heping West Road, Shijiazhuang, 050000 Hebei People's Republic of China
| | - Yan-Ping Zhang
- Department of Urology, The Second Hospital of Hebei Medical University, No. 215, Heping West Road, Shijiazhuang, 050000 Hebei People's Republic of China
| | - Ping-Ying Guo
- Department of Urology, The Second Hospital of Hebei Medical University, No. 215, Heping West Road, Shijiazhuang, 050000 Hebei People's Republic of China
| | - Wei Li
- Department of Urology, The Second Hospital of Hebei Medical University, No. 215, Heping West Road, Shijiazhuang, 050000 Hebei People's Republic of China
| | - Kai-Long Liu
- Department of Urology, The Second Hospital of Hebei Medical University, No. 215, Heping West Road, Shijiazhuang, 050000 Hebei People's Republic of China
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25
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Mugridge JS, Gross JD. Decapping enzymes STOP "cancer" ribosomes in their tracks. EMBO J 2018; 37:embj.2018100801. [PMID: 30455174 DOI: 10.15252/embj.2018100801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Jeffrey S Mugridge
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA, USA
| | - John D Gross
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA, USA
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