1
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Kim HS, Kim YI, Cho JY. ARID3C Acts as a Regulator of Monocyte-to-Macrophage Differentiation Interacting with NPM1. J Proteome Res 2024; 23:2882-2892. [PMID: 38231884 PMCID: PMC11302414 DOI: 10.1021/acs.jproteome.3c00509] [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: 08/12/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 01/19/2024]
Abstract
ARID3C is a protein located on human chromosome 9 and expressed at low levels in various organs, yet its biological function has not been elucidated. In this study, we investigated both the cellular localization and function of ARID3C. Employing a combination of LC-MS/MS and deep learning techniques, we identified NPM1 as a binding partner for ARID3C's nuclear shuttling. ARID3C was found to predominantly localize with the nucleus, where it functioned as a transcription factor for genes STAT3, STAT1, and JUNB, thereby facilitating monocyte-to-macrophage differentiation. The precise binding sites between ARID3C and NPM1 were predicted by AlphaFold2. Mutating this binding site prevented ARID3C from interacting with NPM1, resulting in its retention in the cytoplasm instead of translocation to the nucleus. Consequently, ARID3C lost its ability to bind to the promoters of target genes, leading to a loss of monocyte-to-macrophage differentiation. Collectively, our findings indicate that ARID3C forms a complex with NPM1 to translocate to the nucleus, acting as a transcription factor that promotes the expression of the genes involved in monocyte-to-macrophage differentiation.
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Affiliation(s)
- Hui-Su Kim
- Department
of Biochemistry, College of Veterinary Medicine, Research Institute
for Veterinary Science, and BK21 FOUR Future Veterinary Medicine Leading
Education and Research Center, Seoul National
University, Seoul 08826, Republic of Korea
- Comparative
Medicine Disease Research Center (CDRC), Science Research Center (SRC), Seoul National University, Seoul 08826, Republic of Korea
| | - Yong-In Kim
- Department
of Biochemistry, College of Veterinary Medicine, Research Institute
for Veterinary Science, and BK21 FOUR Future Veterinary Medicine Leading
Education and Research Center, Seoul National
University, Seoul 08826, Republic of Korea
- Comparative
Medicine Disease Research Center (CDRC), Science Research Center (SRC), Seoul National University, Seoul 08826, Republic of Korea
| | - Je-Yoel Cho
- Department
of Biochemistry, College of Veterinary Medicine, Research Institute
for Veterinary Science, and BK21 FOUR Future Veterinary Medicine Leading
Education and Research Center, Seoul National
University, Seoul 08826, Republic of Korea
- Comparative
Medicine Disease Research Center (CDRC), Science Research Center (SRC), Seoul National University, Seoul 08826, Republic of Korea
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2
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Taha MS, Ahmadian MR. Nucleophosmin: A Nucleolar Phosphoprotein Orchestrating Cellular Stress Responses. Cells 2024; 13:1266. [PMID: 39120297 PMCID: PMC11312075 DOI: 10.3390/cells13151266] [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: 07/04/2024] [Revised: 07/18/2024] [Accepted: 07/24/2024] [Indexed: 08/10/2024] Open
Abstract
Nucleophosmin (NPM1) is a key nucleolar protein released from the nucleolus in response to stress stimuli. NPM1 functions as a stress regulator with nucleic acid and protein chaperone activities, rapidly shuttling between the nucleus and cytoplasm. NPM1 is ubiquitously expressed in tissues and can be found in the nucleolus, nucleoplasm, cytoplasm, and extracellular environment. It plays a central role in various biological processes such as ribosome biogenesis, cell cycle regulation, cell proliferation, DNA damage repair, and apoptosis. In addition, it is highly expressed in cancer cells and solid tumors, and its mutation is a major cause of acute myeloid leukemia (AML). This review focuses on NPM1's structural features, functional diversity, subcellular distribution, and role in stress modulation.
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Affiliation(s)
- Mohamed S. Taha
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
- Research on Children with Special Needs Department, Institute of Medical Research and Clinical Studies, National Research Centre, Cairo 12622, Egypt
| | - Mohammad Reza Ahmadian
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
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3
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González-Arzola K. The nucleolus: Coordinating stress response and genomic stability. BIOCHIMICA ET BIOPHYSICA ACTA. GENE REGULATORY MECHANISMS 2024; 1867:195029. [PMID: 38642633 DOI: 10.1016/j.bbagrm.2024.195029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 03/25/2024] [Accepted: 04/12/2024] [Indexed: 04/22/2024]
Abstract
The perception that the nucleoli are merely the organelles where ribosome biogenesis occurs is challenged. Only around 30 % of nucleolar proteins are solely involved in producing ribosomes. Instead, the nucleolus plays a critical role in controlling protein trafficking during stress and, according to its dynamic nature, undergoes continuous protein exchange with nucleoplasm under various cellular stressors. Hence, the concept of nucleolar stress has evolved as cellular insults that disrupt the structure and function of the nucleolus. Considering the emerging role of this organelle in DNA repair and the fact that rDNAs are the most fragile genomic loci, therapies targeting the nucleoli are increasingly being developed. Besides, drugs that target ribosome synthesis and induce nucleolar stress can be used in cancer therapy. In contrast, agents that regulate nucleolar activity may be a potential treatment for neurodegeneration caused by abnormal protein accumulation in the nucleolus. Here, I explore the roles of nucleoli beyond their ribosomal functions, highlighting the factors triggering nucleolar stress and their impact on genomic stability.
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Affiliation(s)
- Katiuska González-Arzola
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Universidad de Sevilla, Consejo Superior de Investigaciones Científicas, Junta de Andalucía, Universidad Pablo de Olavide, 41092 Seville, Spain; Departamento de Bioquímica Vegetal y Biología Molecular, Universidad de Sevilla, 41012 Seville, Spain.
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4
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Florio D, Marasco D. Could Targeting NPM1c+ Misfolding Be a Promising Strategy for Combating Acute Myeloid Leukemia? Int J Mol Sci 2024; 25:811. [PMID: 38255885 PMCID: PMC10815591 DOI: 10.3390/ijms25020811] [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: 12/03/2023] [Revised: 12/30/2023] [Accepted: 01/06/2024] [Indexed: 01/24/2024] Open
Abstract
Acute myeloid leukemia (AML) is a heterogeneous group of diseases classified into various types on the basis of distinct features concerning the morphology, cytochemistry and cytogenesis of leukemic cells. Among the different subtypes, the group "AML with gene mutations" includes the variations of the gene of the multifunctional protein nucleophosmin 1 (NPM1). These mutations are the most frequent (~30-35% of AML adult patients and less in pediatric ones) and occur predominantly in the C-terminal domain (CTD) of NPM1. The most important mutation is the insertion at W288, which determines the frame shift W288Cfs12/Ffs12/Lfs*12 and leads to the addition of 2-12 amino acids, which hamper the correct folding of NPM1. This mutation leads to the loss of the nuclear localization signal (NoLS) and to aberrant cytoplasmic localization, denoted as NPM1c+. Many investigations demonstrated that interfering with the cellular location and oligomerization status of NPM1 can influence its biological functions, including the proper buildup of the nucleolus, and therapeutic strategies have been proposed to target NPM1c+, particularly the use of drugs able to re-direct NPM1 localization. Our studies unveiled a direct link between AML mutations and the neat amyloidogenic character of the CTDs of NPM1c+. Herein, with the aim of exploiting these conformational features, novel therapeutic strategies are proposed that rely on the induction of the selective self-cytotoxicity of leukemic blasts by focusing on agents such as peptides, peptoids or small molecules able to enhance amyloid aggregation and targeting selectively AML-NPM1c+ mutations.
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Affiliation(s)
| | - Daniela Marasco
- Department of Pharmacy, University of Naples “Federico II”, 80131 Naples, Italy;
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5
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Zhou Y, Nakajima R, Shirasawa M, Fikriyanti M, Zhao L, Iwanaga R, Bradford AP, Kurayoshi K, Araki K, Ohtani K. Expanding Roles of the E2F-RB-p53 Pathway in Tumor Suppression. BIOLOGY 2023; 12:1511. [PMID: 38132337 PMCID: PMC10740672 DOI: 10.3390/biology12121511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/03/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023]
Abstract
The transcription factor E2F links the RB pathway to the p53 pathway upon loss of function of pRB, thereby playing a pivotal role in the suppression of tumorigenesis. E2F fulfills a major role in cell proliferation by controlling a variety of growth-associated genes. The activity of E2F is controlled by the tumor suppressor pRB, which binds to E2F and actively suppresses target gene expression, thereby restraining cell proliferation. Signaling pathways originating from growth stimulative and growth suppressive signals converge on pRB (the RB pathway) to regulate E2F activity. In most cancers, the function of pRB is compromised by oncogenic mutations, and E2F activity is enhanced, thereby facilitating cell proliferation to promote tumorigenesis. Upon such events, E2F activates the Arf tumor suppressor gene, leading to activation of the tumor suppressor p53 to protect cells from tumorigenesis. ARF inactivates MDM2, which facilitates degradation of p53 through proteasome by ubiquitination (the p53 pathway). P53 suppresses tumorigenesis by inducing cellular senescence or apoptosis. Hence, in almost all cancers, the p53 pathway is also disabled. Here we will introduce the canonical functions of the RB-E2F-p53 pathway first and then the non-classical functions of each component, which may be relevant to cancer biology.
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Affiliation(s)
- Yaxuan Zhou
- Department of Biomedical Sciences, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan; (Y.Z.); (R.N.); (M.S.); (M.F.); (L.Z.)
| | - Rinka Nakajima
- Department of Biomedical Sciences, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan; (Y.Z.); (R.N.); (M.S.); (M.F.); (L.Z.)
| | - Mashiro Shirasawa
- Department of Biomedical Sciences, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan; (Y.Z.); (R.N.); (M.S.); (M.F.); (L.Z.)
| | - Mariana Fikriyanti
- Department of Biomedical Sciences, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan; (Y.Z.); (R.N.); (M.S.); (M.F.); (L.Z.)
| | - Lin Zhao
- Department of Biomedical Sciences, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan; (Y.Z.); (R.N.); (M.S.); (M.F.); (L.Z.)
| | - Ritsuko Iwanaga
- Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 East 19th Avenue, Aurora, CO 80045, USA; (R.I.); (A.P.B.)
| | - Andrew P. Bradford
- Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 East 19th Avenue, Aurora, CO 80045, USA; (R.I.); (A.P.B.)
| | - Kenta Kurayoshi
- Division of Molecular Genetics, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan;
| | - Keigo Araki
- Department of Morphological Biology, Ohu University School of Dentistry, 31-1 Misumido Tomitamachi, Koriyama, Fukushima 963-8611, Japan;
| | - Kiyoshi Ohtani
- Department of Biomedical Sciences, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan; (Y.Z.); (R.N.); (M.S.); (M.F.); (L.Z.)
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6
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Junod SL, Tingey M, Kelich JM, Goryaynov A, Herbine K, Yang W. Dynamics of nuclear export of pre-ribosomal subunits revealed by high-speed single-molecule microscopy in live cells. iScience 2023; 26:107445. [PMID: 37599825 PMCID: PMC10433129 DOI: 10.1016/j.isci.2023.107445] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 06/24/2023] [Accepted: 07/18/2023] [Indexed: 08/22/2023] Open
Abstract
We present a study on the nuclear export efficiency and time of pre-ribosomal subunits in live mammalian cells, using high-speed single-molecule tracking and single-molecule fluorescence resonance energy transfer techniques. Our findings reveal that pre-ribosomal particles exhibit significantly higher nuclear export efficiency compared to other large cargos like mRNAs, with around two-thirds of interactions between the pre-60S or pre-40S and the nuclear pore complexes (NPCs) resulting in successful export to the cytoplasm. We also demonstrate that nuclear transport receptor (NTR) chromosomal maintenance 1 (CRM1) plays a crucial role in nuclear export efficiency, with pre-60S and pre-40S particle export efficiency decreasing by 11-17-fold when CRM1 is inhibited. Our results suggest that multiple copies of CRM1 work cooperatively to chaperone pre-ribosomal subunits through the NPC, thus increasing export efficiency and decreasing export time. Significantly, this cooperative NTR mechanism extends beyond pre-ribosomal subunits, as evidenced by the enhanced nucleocytoplasmic transport of proteins.
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Affiliation(s)
- Samuel L. Junod
- Department of Biology, Temple University, Philadelphia, PA, USA
| | - Mark Tingey
- Department of Biology, Temple University, Philadelphia, PA, USA
| | | | | | - Karl Herbine
- Department of Biology, Temple University, Philadelphia, PA, USA
| | - Weidong Yang
- Department of Biology, Temple University, Philadelphia, PA, USA
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7
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Khan M, Hou S, Chen M, Lei H. Mechanisms of RNA export and nuclear retention. WILEY INTERDISCIPLINARY REVIEWS. RNA 2023; 14:e1755. [PMID: 35978483 DOI: 10.1002/wrna.1755] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 06/21/2022] [Accepted: 07/06/2022] [Indexed: 05/13/2023]
Abstract
With the identification of huge amount of noncoding RNAs in recent years, the concept of RNA localization has extended from traditional mRNA export to RNA export of mRNA and ncRNA as well as nuclear retention of ncRNA. This review aims to summarize the recent findings from studies on the mechanisms of export of different RNAs and nuclear retention of some lncRNAs in higher eukaryotes, with a focus on splicing-dependent TREX recruitment for the export of spliced mRNA and the sequence-dependent mechanism of mRNA export in the absence of splicing. In addition, evidence to support the involvement of m6 A modification in RNA export with the coordination between the methylase complex and TREX complex as well as sequence-dependent nuclear retention of lncRNA is recapitulated. Finally, a model of sequence-dependent RNA localization is proposed along with the many questions that remain to be answered. This article is categorized under: RNA Export and Localization > RNA Localization RNA Export and Localization > Nuclear Export/Import.
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Affiliation(s)
- Misbah Khan
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
| | - Shuai Hou
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
| | - Mo Chen
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
| | - Haixin Lei
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
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8
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Buneeva O, Kopylov A, Gnedenko O, Medvedeva M, Veselovsky A, Ivanov A, Zgoda V, Medvedev A. Proteomic Profiling of Mouse Brain Pyruvate Kinase Binding Proteins: A Hint for Moonlighting Functions of PKM1? Int J Mol Sci 2023; 24:ijms24087634. [PMID: 37108803 PMCID: PMC10143413 DOI: 10.3390/ijms24087634] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/18/2023] [Accepted: 04/19/2023] [Indexed: 04/29/2023] Open
Abstract
Affinity-based proteomic profiling is widely used for the identification of proteins involved in the formation of various interactomes. Since protein-protein interactions (PPIs) reflect the role of particular proteins in the cell, identification of interaction partners for a protein of interest can reveal its function. The latter is especially important for the characterization of multifunctional proteins, which can play different roles in the cell. Pyruvate kinase (PK), a classical glycolytic enzyme catalyzing the last step of glycolysis, exists in four isoforms: PKM1, PKM2, PKL, and PKR. The enzyme isoform expressed in actively dividing cells, PKM2, exhibits many moonlighting (noncanonical) functions. In contrast to PKM2, PKM1, predominantly expressed in adult differentiated tissues, lacks well-documented moonlighting functions. However, certain evidence exists that it can also perform some functions unrelated to glycolysis. In order to evaluate protein partners, bound to PKM1, in this study we have combined affinity-based separation of mouse brain proteins with mass spectrometry identification. The highly purified PKM1 and a 32-mer synthetic peptide (PK peptide), sharing high sequence homology with the interface contact region of all PK isoforms, were used as the affinity ligands. This proteomic profiling resulted in the identification of specific and common proteins bound to both affinity ligands. Quantitative affinity binding to the affinity ligands of selected identified proteins was validated using a surface plasmon resonance (SPR) biosensor. Bioinformatic analysis has shown that the identified proteins, bound to both full-length PKM1 and the PK peptide, form a protein network (interactome). Some of these interactions are relevant for the moonlighting functions of PKM1. The proteomic dataset is available via ProteomeXchange with the identifier PXD041321.
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Affiliation(s)
- Olga Buneeva
- Institute of Biomedical Chemistry, 10 Pogodinskaya Street, Moscow 119121, Russia
| | - Arthur Kopylov
- Institute of Biomedical Chemistry, 10 Pogodinskaya Street, Moscow 119121, Russia
| | - Oksana Gnedenko
- Institute of Biomedical Chemistry, 10 Pogodinskaya Street, Moscow 119121, Russia
| | - Marina Medvedeva
- Department of Biochemistry, School of Biology, Moscow State University, Moscow 119991, Russia
| | - Alexander Veselovsky
- Institute of Biomedical Chemistry, 10 Pogodinskaya Street, Moscow 119121, Russia
| | - Alexis Ivanov
- Institute of Biomedical Chemistry, 10 Pogodinskaya Street, Moscow 119121, Russia
| | - Victor Zgoda
- Institute of Biomedical Chemistry, 10 Pogodinskaya Street, Moscow 119121, Russia
| | - Alexei Medvedev
- Institute of Biomedical Chemistry, 10 Pogodinskaya Street, Moscow 119121, Russia
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9
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Tani I, Oikawa Y, Doi S, Janairo JIB, Kamada R, Sakaguchi K. Ribosomal protein uL30 undergoes phase separation with nucleophosmin and regulates nucleolar formation in the absence of RNA. Biochem Biophys Res Commun 2023; 642:35-40. [PMID: 36543022 DOI: 10.1016/j.bbrc.2022.12.041] [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: 12/02/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
The nucleolus is a membrane-less structure that exists in the nucleus of cells and plays a crucial role in ribosome biogenesis. It is known to be formed through liquid-liquid phase separation (LLPS) caused by the interaction of various nucleolar proteins and nucleic acids. Recently, many studies on LLPS with nucleolar proteins in the presence of RNA showed the importance of electrostatic interactions and cation-pi interactions among RNA and intrinsically disordered regions of proteins. However, it is reported that the initiation of nucleolar formation is RNA polymerase I-independent. The mechanism of nucleolar formation in the early stage remains obscure. In this study, we showed for the first time that the ribosomal protein uL30 and a major nucleolar protein, nucleophosmin (NPM) formed liquid droplets in vitro in the absence of RNA. The liquid droplet formation with uL30 and NPM may be derived from the interaction between the basic regions of uL30 and acidic regions of the oligomeric NPM. The knockdown of uL30 in cells significantly reduced the number of nucleoli, while it did not alter the protein level of NPM. The results showed that LLPS and nucleolar formation were affected by changes in uL30 levels. Our results suggest that the protein-protein interaction between nucleolar proteins may play an important role in nucleolar formation in the early stages when the rRNA content is very low.
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Affiliation(s)
- Itsumi Tani
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Yui Oikawa
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Seiyo Doi
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Jose Isagani B Janairo
- Department of Biology, College of Science, De La Salle University, Manila, 0922, Philippines
| | - Rui Kamada
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Kazuyasu Sakaguchi
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan.
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10
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Nucleolus and Nucleolar Stress: From Cell Fate Decision to Disease Development. Cells 2022; 11:cells11193017. [PMID: 36230979 PMCID: PMC9563748 DOI: 10.3390/cells11193017] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/19/2022] [Accepted: 09/22/2022] [Indexed: 11/30/2022] Open
Abstract
Besides the canonical function in ribosome biogenesis, there have been significant recent advances towards the fascinating roles of the nucleolus in stress response, cell destiny decision and disease progression. Nucleolar stress, an emerging concept describing aberrant nucleolar structure and function as a result of impaired rRNA synthesis and ribosome biogenesis under stress conditions, has been linked to a variety of signaling transductions, including but not limited to Mdm2-p53, NF-κB and HIF-1α pathways. Studies have uncovered that nucleolus is a stress sensor and signaling hub when cells encounter various stress conditions, such as nutrient deprivation, DNA damage and oxidative and thermal stress. Consequently, nucleolar stress plays a pivotal role in the determination of cell fate, such as apoptosis, senescence, autophagy and differentiation, in response to stress-induced damage. Nucleolar homeostasis has been involved in the pathogenesis of various chronic diseases, particularly tumorigenesis, neurodegenerative diseases and metabolic disorders. Mechanistic insights have revealed the indispensable role of nucleolus-initiated signaling in the progression of these diseases. Accordingly, the intervention of nucleolar stress may pave the path for developing novel therapies against these diseases. In this review, we systemically summarize recent findings linking the nucleolus to stress responses, signaling transduction and cell-fate decision, set the spotlight on the mechanisms by which nucleolar stress drives disease progression, and highlight the merit of the intervening nucleolus in disease treatment.
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11
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Prajzlerová K, Šenolt L, Filková M. Is there a potential of circulating miRNAs as biomarkers in rheumatic diseases? Genes Dis 2022. [DOI: 10.1016/j.gendis.2022.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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12
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Temaj G, Saha S, Dragusha S, Ejupi V, Buttari B, Profumo E, Beqa L, Saso L. Ribosomopathies and cancer: pharmacological implications. Expert Rev Clin Pharmacol 2022; 15:729-746. [PMID: 35787725 DOI: 10.1080/17512433.2022.2098110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The ribosome is a ribonucleoprotein organelle responsible for protein synthesis, and its biogenesis is a highly coordinated process that involves many macromolecular components. Any acquired or inherited impairment in ribosome biogenesis or ribosomopathies is associated with the development of different cancers and rare genetic diseases. Interference with multiple steps of protein synthesis has been shown to promote tumor cell death. AREAS COVERED We discuss the current insights about impaired ribosome biogenesis and their secondary consequences on protein synthesis, transcriptional and translational responses, proteotoxic stress, and other metabolic pathways associated with cancer and rare diseases. Studies investigating the modulation of different therapeutic chemical entities targeting cancer in in vitro and in vivo models have also been detailed. EXPERT OPINION Despite the association between inherited mutations affecting ribosome biogenesis and cancer biology, the development of therapeutics targeting the essential cellular machinery has only started to emerge. New chemical entities should be designed to modulate different checkpoints (translating oncoproteins, dysregulation of specific ribosome-assembly machinery, ribosomal stress, and rewiring ribosomal functions). Although safe and effective therapies are lacking, consideration should also be given to using existing drugs alone or in combination for long-term safety, with known risks for feasibility in clinical trials and synergistic effects.
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Affiliation(s)
| | - Sarmistha Saha
- Department of Cardiovascular, Endocrine-metabolic Diseases, and Aging, Italian National Institute of Health, Rome, Italy
| | | | - Valon Ejupi
- College UBT, Faculty of Pharmacy, Prishtina, Kosovo
| | - Brigitta Buttari
- Department of Cardiovascular, Endocrine-metabolic Diseases, and Aging, Italian National Institute of Health, Rome, Italy
| | - Elisabetta Profumo
- Department of Cardiovascular, Endocrine-metabolic Diseases, and Aging, Italian National Institute of Health, Rome, Italy
| | - Lule Beqa
- College UBT, Faculty of Pharmacy, Prishtina, Kosovo
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, Italy
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13
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Dibus N, Zobalova E, Monleon MAM, Korinek V, Filipp D, Petrusova J, Sedlacek R, Kasparek P, Cermak L. FBXO38 Ubiquitin Ligase Controls Sertoli Cell Maturation. Front Cell Dev Biol 2022; 10:914053. [PMID: 35769260 PMCID: PMC9234700 DOI: 10.3389/fcell.2022.914053] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 05/19/2022] [Indexed: 12/18/2022] Open
Abstract
The ubiquitin ligase SCFFBXO38 controls centromeric chromatin by promoting the degradation of the ZXDB protein. To determine the importance of this pathway during development, Fbxo38-deficient mice were generated. The loss of FBXO38 resulted in growth retardation affecting several organs, including the male reproductive system. A detailed analysis of the mutant testes revealed pathological changes in the seminiferous tubules, accompanied by a significant decrease in sperm production and reduced fertility. In adult testes, FBXO38 was specifically expressed in Sertoli cells, a somatic population essential for spermatogenesis initiation and progression. Sertoli cells lacking FBXO38 exhibited stabilized ZXDB protein and upregulated centromeric chromatin. Furthermore, the gene expression profile revealed that the absence of FBXO38 led to a defect in Sertoli cell maturation, specifically characterized by dysregulation in genes controlling retinoic acid metabolism and intercellular communication. Consequently, we documented significant changes in their ability to initiate spermatogonial differentiation. In conclusion, we show that FBXO38 acts as a Sertoli cell maturation factor, affecting the Sertoli cell transcription program, centromere integrity, and, subsequently, the ability to control spermatogenesis.
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Affiliation(s)
- Nikol Dibus
- Laboratory of Cancer Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czechia
- Faculty of Science, Charles University, Prague, Czechia
| | - Eliska Zobalova
- Laboratory of Cancer Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czechia
| | - Mario A. M. Monleon
- Laboratory of Cancer Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czechia
| | - Vladimir Korinek
- Laboratory of Cell and Developmental Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia
| | - Dominik Filipp
- Laboratory of Immunobiology, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia
| | - Jana Petrusova
- Laboratory of Immunobiology, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia
| | - Radislav Sedlacek
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czechia
| | - Petr Kasparek
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czechia
| | - Lukas Cermak
- Laboratory of Cancer Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czechia
- *Correspondence: Lukas Cermak,
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14
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Ikeda D, Chi S, Uchiyama S, Nakamura H, Guo YM, Yamauchi N, Yuda J, Minami Y. Molecular Classification and Overcoming Therapy Resistance for Acute Myeloid Leukemia with Adverse Genetic Factors. Int J Mol Sci 2022; 23:5950. [PMID: 35682627 PMCID: PMC9180585 DOI: 10.3390/ijms23115950] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/19/2022] [Accepted: 05/24/2022] [Indexed: 12/01/2022] Open
Abstract
The European LeukemiaNet (ELN) criteria define the adverse genetic factors of acute myeloid leukemia (AML). AML with adverse genetic factors uniformly shows resistance to standard chemotherapy and is associated with poor prognosis. Here, we focus on the biological background and real-world etiology of these adverse genetic factors and then describe a strategy to overcome the clinical disadvantages in terms of targeting pivotal molecular mechanisms. Different adverse genetic factors often rely on common pathways. KMT2A rearrangement, DEK-NUP214 fusion, and NPM1 mutation are associated with the upregulation of HOX genes. The dominant tyrosine kinase activity of the mutant FLT3 or BCR-ABL1 fusion proteins is transduced by the AKT-mTOR, MAPK-ERK, and STAT5 pathways. Concurrent mutations of ASXL1 and RUNX1 are associated with activated AKT. Both TP53 mutation and mis-expressed MECOM are related to impaired apoptosis. Clinical data suggest that adverse genetic factors can be found in at least one in eight AML patients and appear to accumulate in relapsed/refractory cases. TP53 mutation is associated with particularly poor prognosis. Molecular-targeted therapies focusing on specific genomic abnormalities, such as FLT3, KMT2A, and TP53, have been developed and have demonstrated promising results.
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Affiliation(s)
- Daisuke Ikeda
- Department of Hematology, National Cancer Center Hospital East, Kashiwa, Chiba 277-8577, Japan; (D.I.); (S.C.); (S.U.); (H.N.); (Y.-M.G.); (N.Y.); (J.Y.)
- Department of Hematology, Kameda Medical Center, Kamogawa 296-8602, Japan
| | - SungGi Chi
- Department of Hematology, National Cancer Center Hospital East, Kashiwa, Chiba 277-8577, Japan; (D.I.); (S.C.); (S.U.); (H.N.); (Y.-M.G.); (N.Y.); (J.Y.)
| | - Satoshi Uchiyama
- Department of Hematology, National Cancer Center Hospital East, Kashiwa, Chiba 277-8577, Japan; (D.I.); (S.C.); (S.U.); (H.N.); (Y.-M.G.); (N.Y.); (J.Y.)
| | - Hirotaka Nakamura
- Department of Hematology, National Cancer Center Hospital East, Kashiwa, Chiba 277-8577, Japan; (D.I.); (S.C.); (S.U.); (H.N.); (Y.-M.G.); (N.Y.); (J.Y.)
| | - Yong-Mei Guo
- Department of Hematology, National Cancer Center Hospital East, Kashiwa, Chiba 277-8577, Japan; (D.I.); (S.C.); (S.U.); (H.N.); (Y.-M.G.); (N.Y.); (J.Y.)
| | - Nobuhiko Yamauchi
- Department of Hematology, National Cancer Center Hospital East, Kashiwa, Chiba 277-8577, Japan; (D.I.); (S.C.); (S.U.); (H.N.); (Y.-M.G.); (N.Y.); (J.Y.)
| | - Junichiro Yuda
- Department of Hematology, National Cancer Center Hospital East, Kashiwa, Chiba 277-8577, Japan; (D.I.); (S.C.); (S.U.); (H.N.); (Y.-M.G.); (N.Y.); (J.Y.)
| | - Yosuke Minami
- Department of Hematology, National Cancer Center Hospital East, Kashiwa, Chiba 277-8577, Japan; (D.I.); (S.C.); (S.U.); (H.N.); (Y.-M.G.); (N.Y.); (J.Y.)
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15
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Durante G, Broseghini E, Comito F, Naddeo M, Milani M, Salamon I, Campione E, Dika E, Ferracin M. Circulating microRNA biomarkers in melanoma and non-melanoma skin cancer. Expert Rev Mol Diagn 2022; 22:305-318. [PMID: 35235479 DOI: 10.1080/14737159.2022.2049243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Skin cancer is the most common type of cancer and is classified in melanoma and non-melanoma cancers, which include basal cell, squamous cell and Merkel cell carcinoma. Specific microRNAs are dysregulated in each skin cancer type. MicroRNAs act as oncogene or tumor suppressor gene regulators and are actively released from tumor cells in the circulation. Cell-free microRNAs serve many, and possibly yet unexplored, functional roles, but their presence and abundance in the blood has been investigated as disease biomarker. Indeed, specific microRNAs can be isolated and quantified in the blood, usually in serum or plasma fractions, where they are uncommonly stable. MicroRNA levels reflect underlying conditions and have been associated with skin cancer presence, stage, evolution, or therapy efficacy. AREAS COVERED In this review, we summarize the state of the art on circulating microRNAs detectable in skin cancer patients including all the studies that performed microRNA identification and quantification in the circulation using appropriate sample size and statistics and providing detailed methodology, with a specific focus on diagnostic and prognostic biomarkers. EXPERT OPINION Circulating microRNAs display a relevant biomarker potential. We expect the development of methodological guidelines and standardized protocols for circulating miRNA quantification in clinical settings.
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Affiliation(s)
- Giorgio Durante
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Elisabetta Broseghini
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Francesca Comito
- Oncology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Maria Naddeo
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Massimo Milani
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy.,R&D Cantabria Labs, Difa Cooper, Italy
| | - Irene Salamon
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Elena Campione
- Dermatology Unit, Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy
| | - Emi Dika
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy.,Dermatology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Manuela Ferracin
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
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16
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Brown IN, Lafita-Navarro MC, Conacci-Sorrell M. Regulation of Nucleolar Activity by MYC. Cells 2022; 11:cells11030574. [PMID: 35159381 PMCID: PMC8834138 DOI: 10.3390/cells11030574] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/02/2022] [Accepted: 02/03/2022] [Indexed: 01/20/2023] Open
Abstract
The nucleolus harbors the machinery necessary to produce new ribosomes which are critical for protein synthesis. Nucleolar size, shape, and density are highly dynamic and can be adjusted to accommodate ribosome biogenesis according to the needs for protein synthesis. In cancer, cells undergo continuous proliferation; therefore, nucleolar activity is elevated due to their high demand for protein synthesis. The transcription factor and universal oncogene MYC promotes nucleolar activity by enhancing the transcription of ribosomal DNA (rDNA) and ribosomal proteins. This review summarizes the importance of nucleolar activity in mammalian cells, MYC’s role in nucleolar regulation in cancer, and discusses how a better understanding (and the potential inhibition) of aberrant nucleolar activity in cancer cells could lead to novel therapeutics.
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Affiliation(s)
- Isabella N. Brown
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;
| | - M. Carmen Lafita-Navarro
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;
- Correspondence: (M.C.L.-N.); (M.C.-S.)
| | - Maralice Conacci-Sorrell
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;
- Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
- Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
- Correspondence: (M.C.L.-N.); (M.C.-S.)
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17
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Zhu J, Miao Q, Guo H, Tang A, Dong D, Tang J, Wang F, Tong G, Liu G. Nucleolin interacts with the rabbit hemorrhagic disease virus replicase RdRp, nonstructural proteins p16 and p23, playing a role in virus replication. Virol Sin 2022; 37:48-59. [PMID: 35234629 PMCID: PMC8922422 DOI: 10.1016/j.virs.2022.01.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 09/15/2021] [Indexed: 11/24/2022] Open
Abstract
Rabbit hemorrhagic disease virus (RHDV) is a member of the Caliciviridae family and cannot be propagated in vitro, which has impeded the progress of investigating its replication mechanism. Construction of an RHDV replicon system has recently provided a platform for exploring RHDV replication in host cells. Here, aided by this replicon system and using two-step affinity purification, we purified the RHDV replicase and identified its associated host factors. We identified rabbit nucleolin (NCL) as a physical link, which mediating the interaction between other RNA-dependent RNA polymerase (RdRp)-related host proteins and the viral replicase RdRp. We found that the overexpression or knockdown of NCL significantly increased or severely impaired RHDV replication in RK-13 cells, respectively. NCL was identified to directly interact with RHDV RdRp, p16, and p23. Furthermore, NCL knockdown severely impaired the binding of RdRp to RdRp-related host factors. Collectively, these results indicate that the host protein NCL is essential for RHDV replication and acts as a physical link between viral replicase and host proteins.
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Affiliation(s)
- Jie Zhu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, China
| | - Qiuhong Miao
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, China; Laboratory of Virology, Wageningen University and Research, Wageningen, 6708 PB, the Netherlands
| | - Hongyuan Guo
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, China
| | - Aoxing Tang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, China
| | - Dandan Dong
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, China
| | - Jingyu Tang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, China
| | - Fang Wang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Guangzhi Tong
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, China.
| | - Guangqing Liu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, China.
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18
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Cho HC, Huang Y, Hung JT, Hung TH, Cheng KC, Liu YH, Kuo MW, Wang SH, Yu AL, Yu J. Puf-A promotes cancer progression by interacting with nucleophosmin in nucleolus. Oncogene 2022; 41:1155-1165. [PMID: 34999733 PMCID: PMC8856959 DOI: 10.1038/s41388-021-02138-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 11/11/2021] [Accepted: 11/25/2021] [Indexed: 01/02/2023]
Abstract
Previously, we identified Puf-A as a novel member of Puf-family RNA-binding proteins; however, its biological functions remain obscure. Analysis of tumor samples of non-small cell lung cancer (NSCLC) showed that high Puf-A expression correlated with high histology grade and abnormal p53 status. Kaplan-Meier curve for overall survival revealed high expression of Puf-A to predict poor prognosis in stage I NSCLC. Among patients with colorectal cancer, high Puf-A expression also showed an adverse impact on overall survival. In lung cancer cell lines, downregulation of p53 increased Puf-A expression, and upregulation of p53 dampened its expression. However, luciferase reporter assays indicated that PUF-A locus harbored the p53-response element, but regulated Puf-A transcription indirectly. In vivo suppression of p53 in CCSP-rtTA/TetO-Cre/LSL-KrasG12D/p53flox/flox conditional mutant mice accelerated the progression of the KrasG12D-driven lung cancer, along with enhanced expression of Puf-A. Importantly, intranasal delivery of shPuf-A to the inducible KrasG12D/p53flox/flox mice suppressed tumor progression. Puf-A silencing led to marked decreases in the 80S ribosomes, along with decrease in S6 and L5 in the cytoplasm and accumulation in the nucleolus. Based on immunofluorescence staining and immunoprecipitation studies, Puf-A interacted with NPM1 in nucleolus. Puf-A silencing resulted in NPM1 translocation from nucleolus to nucleoplasm and this disruption of NPM1 localization was reversed by a rescue experiment. Mechanistically, Puf-A silencing altered NPM1 localization, leading to the retention of ribosomal proteins in nucleolus and diminished ribosome biogenesis, followed by cell-cycle arrest/cell death. Puf-A is a potential theranostic target for cancer therapy and an important player in cancer progression.
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Affiliation(s)
- Huan-Chieh Cho
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Yenlin Huang
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
- Department of Anatomic Pathology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Jung-Tung Hung
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Tsai-Hsien Hung
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Kai-Chun Cheng
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Yun-Hen Liu
- Department of Surgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Ming-Wei Kuo
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Sheng-Hung Wang
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Alice L Yu
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
- Department of Pediatrics, University of California San Diego Medical Center, San Diego, CA, USA
| | - John Yu
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan.
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19
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Kung CP, Weber JD. It’s Getting Complicated—A Fresh Look at p53-MDM2-ARF Triangle in Tumorigenesis and Cancer Therapy. Front Cell Dev Biol 2022; 10:818744. [PMID: 35155432 PMCID: PMC8833255 DOI: 10.3389/fcell.2022.818744] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 01/07/2022] [Indexed: 01/31/2023] Open
Abstract
Anti-tumorigenic mechanisms mediated by the tumor suppressor p53, upon oncogenic stresses, are our bodies’ greatest weapons to battle against cancer onset and development. Consequently, factors that possess significant p53-regulating activities have been subjects of serious interest from the cancer research community. Among them, MDM2 and ARF are considered the most influential p53 regulators due to their abilities to inhibit and activate p53 functions, respectively. MDM2 inhibits p53 by promoting ubiquitination and proteasome-mediated degradation of p53, while ARF activates p53 by physically interacting with MDM2 to block its access to p53. This conventional understanding of p53-MDM2-ARF functional triangle have guided the direction of p53 research, as well as the development of p53-based therapeutic strategies for the last 30 years. Our increasing knowledge of this triangle during this time, especially through identification of p53-independent functions of MDM2 and ARF, have uncovered many under-appreciated molecular mechanisms connecting these three proteins. Through recognizing both antagonizing and synergizing relationships among them, our consideration for harnessing these relationships to develop effective cancer therapies needs an update accordingly. In this review, we will re-visit the conventional wisdom regarding p53-MDM2-ARF tumor-regulating mechanisms, highlight impactful studies contributing to the modern look of their relationships, and summarize ongoing efforts to target this pathway for effective cancer treatments. A refreshed appreciation of p53-MDM2-ARF network can bring innovative approaches to develop new generations of genetically-informed and clinically-effective cancer therapies.
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Affiliation(s)
- Che-Pei Kung
- ICCE Institute, St. Louis, MO, United States
- Division of Molecular Oncology, Department of Medicine, St. Louis, MO, United States
- *Correspondence: Che-Pei Kung, ; Jason D. Weber,
| | - Jason D. Weber
- ICCE Institute, St. Louis, MO, United States
- Division of Molecular Oncology, Department of Medicine, St. Louis, MO, United States
- Alvin J. Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, United States
- *Correspondence: Che-Pei Kung, ; Jason D. Weber,
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20
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Morovicz AP, Mazloumi Gavgani F, Jacobsen RG, Skuseth Slinning M, Turcu DC, Lewis AE. Phosphoinositide 3-kinase signalling in the nucleolus. Adv Biol Regul 2021; 83:100843. [PMID: 34920983 DOI: 10.1016/j.jbior.2021.100843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 11/20/2021] [Indexed: 12/26/2022]
Abstract
The phosphoinositide 3-kinase (PI3K) signalling pathway plays key roles in many cellular processes and is altered in many diseases. The function and mode of action of the pathway have mostly been elucidated in the cytoplasm. However, many of the components of the PI3K pathway are also present in the nucleus at specific sub-nuclear sites including nuclear speckles, nuclear lipid islets and the nucleolus. Nucleoli are membrane-less subnuclear structures where ribosome biogenesis occurs. Processes leading to ribosome biogenesis are tightly regulated to maintain protein translation capacity of cells. This review focuses on nucleolar PI3K signalling and how it regulates rRNA synthesis, as well as on the identification of downstream phosphatidylinositol (3,4,5)trisphosphate effector proteins.
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Affiliation(s)
| | | | - Rhîan G Jacobsen
- Department of Biological Sciences, University of Bergen, 5008, Bergen, Norway
| | | | - Diana C Turcu
- Department of Biological Sciences, University of Bergen, 5008, Bergen, Norway
| | - Aurélia E Lewis
- Department of Biological Sciences, University of Bergen, 5008, Bergen, Norway.
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21
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Karimi Dermani F, Gholamzadeh Khoei S, Afshar S, Amini R. The potential role of nucleophosmin (NPM1) in the development of cancer. J Cell Physiol 2021; 236:7832-7852. [PMID: 33959979 DOI: 10.1002/jcp.30406] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 04/07/2021] [Accepted: 04/12/2021] [Indexed: 12/18/2022]
Abstract
Nucleophosmin (NPM1) is a well-known nucleocytoplasmic shuttling protein that performs several cellular functions such as ribosome biogenesis, chromatin remodeling, genomic stability, cell cycle progression, and apoptosis. NPM1 has been identified to be necessary for normal cellular functions, and its altered regulation by overexpression, mutation, translocation, loss of function, or sporadic deletion can lead to cancer and tumorigenesis. In this review, we focus on the gene and protein structure of NPM1 and its physiological roles. Finally, we discuss the association of NPM1 with various types of cancer including solid tumors and leukemia.
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Affiliation(s)
- Fateme Karimi Dermani
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.,Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Saeideh Gholamzadeh Khoei
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.,Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Saeid Afshar
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Razieh Amini
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
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22
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Gourvest M, De Clara E, Wu HC, Touriol C, Meggetto F, De Thé H, Pyronnet S, Brousset P, Bousquet M. A novel leukemic route of mutant NPM1 through nuclear import of the overexpressed long noncoding RNA LONA. Leukemia 2021; 35:2784-2798. [PMID: 34131282 PMCID: PMC8205207 DOI: 10.1038/s41375-021-01307-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 05/11/2021] [Accepted: 05/21/2021] [Indexed: 02/06/2023]
Abstract
The most frequent genetic alteration in acute myeloid leukemia (AML) is the mutation of nucleophosmin 1 (NPM1). Yet, its downstream oncogenic routes are not fully understood. Here, we report the identification of one long noncoding RNA (lncRNA) overexpressed in NPM1-mutated AML patients (named LONA) whose intracellular localization inversely reflects that of NPM1. While NPM1 is nuclear and LONA cytoplasmic in wild-type NPM1 AML cells, LONA becomes nuclear as mutant NPM1 moves toward the cytoplasm. Gain or loss of function combined with a genome-wide RNA-seq search identified a set of LONA mRNA targets encoding proteins involved in myeloid cell differentiation (including THSB1, MAFB, and ASB2) and interaction with its microenvironment. Consistently, LONA overexpression in mutant NPM1 established cell lines and primary AML cells exerts an anti-myeloid differentiation effect, whilst it exerts an opposite pro-myeloid differentiation effect in a wild type NPM1 setting. In vivo, LONA overexpression acts as an oncogenic lncRNA reducing the survival of mice transplanted with AML cells and rendering AML tumors more resistant to AraC chemotherapy.These data indicate that mutation-dependent nuclear export of NPM1 leads to nuclear retention and consequent oncogenic functions of the overexpressed lncRNA LONA, thus uncovering a novel NPM1 mutation-dependent pathway in AML pathogenesis.
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Affiliation(s)
- Morgane Gourvest
- grid.468186.5Cancer Research Center of Toulouse (CRCT), UMR1037 Inserm/Université Toulouse III Paul Sabatier, ERL5294 CNRS, Laboratoire d’excellence Toulouse Cancer (TOUCAN), Toulouse, France
| | - Etienne De Clara
- grid.468186.5Cancer Research Center of Toulouse (CRCT), UMR1037 Inserm/Université Toulouse III Paul Sabatier, ERL5294 CNRS, Laboratoire d’excellence Toulouse Cancer (TOUCAN), Toulouse, France
| | - Hsin-Chieh Wu
- grid.410533.00000 0001 2179 2236INSERM U944 and 1050, IRSL, University of Paris and PSL, Hôpital St. Louis and Collège de France, Paris, France
| | - Christian Touriol
- grid.468186.5Cancer Research Center of Toulouse (CRCT), UMR1037 Inserm/Université Toulouse III Paul Sabatier, ERL5294 CNRS, Laboratoire d’excellence Toulouse Cancer (TOUCAN), Toulouse, France
| | - Fabienne Meggetto
- grid.468186.5Cancer Research Center of Toulouse (CRCT), UMR1037 Inserm/Université Toulouse III Paul Sabatier, ERL5294 CNRS, Laboratoire d’excellence Toulouse Cancer (TOUCAN), Toulouse, France
| | - Hugues De Thé
- grid.410533.00000 0001 2179 2236INSERM U944 and 1050, IRSL, University of Paris and PSL, Hôpital St. Louis and Collège de France, Paris, France
| | - Stéphane Pyronnet
- grid.468186.5Cancer Research Center of Toulouse (CRCT), UMR1037 Inserm/Université Toulouse III Paul Sabatier, ERL5294 CNRS, Laboratoire d’excellence Toulouse Cancer (TOUCAN), Toulouse, France
| | - Pierre Brousset
- grid.468186.5Cancer Research Center of Toulouse (CRCT), UMR1037 Inserm/Université Toulouse III Paul Sabatier, ERL5294 CNRS, Laboratoire d’excellence Toulouse Cancer (TOUCAN), Toulouse, France
| | - Marina Bousquet
- grid.468186.5Cancer Research Center of Toulouse (CRCT), UMR1037 Inserm/Université Toulouse III Paul Sabatier, ERL5294 CNRS, Laboratoire d’excellence Toulouse Cancer (TOUCAN), Toulouse, France
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23
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Akef A, McGraw K, Cappell SD, Larson DR. Ribosome biogenesis is a downstream effector of the oncogenic U2AF1-S34F mutation. PLoS Biol 2020; 18:e3000920. [PMID: 33137094 PMCID: PMC7660540 DOI: 10.1371/journal.pbio.3000920] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 11/12/2020] [Accepted: 09/22/2020] [Indexed: 01/05/2023] Open
Abstract
U2 Small Nuclear RNA Auxiliary Factor 1 (U2AF1) forms a heterodimeric complex with U2AF2 that is primarily responsible for 3' splice site selection. U2AF1 mutations have been identified in most cancers but are prevalent in Myelodysplastic Syndrome (MDS) and Acute Myeloid Leukemia (AML), and the most common mutation is a missense substitution of serine-34 to phenylalanine (S34F). The U2AF heterodimer also has a noncanonical function as a translational regulator. Here, we report that the U2AF1-S34F mutation results in specific misregulation of the translation initiation and ribosome biogenesis machinery. The net result is an increase in mRNA translation at the single-cell level. Among the translationally up-regulated targets of U2AF1-S34F is Nucleophosmin 1 (NPM1), which is a major driver of myeloid malignancy. Depletion of NPM1 impairs the viability of the U2AF1-S34F mutant cells and causes ribosomal RNA (rRNA) processing defects, thus indicating an unanticipated synthetic interaction between U2AF1, NPM1, and ribosome biogenesis. Our results establish a unique molecular phenotype for the U2AF1 mutation that recapitulates translational misregulation in myeloid disease.
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MESH Headings
- Amino Acid Substitution
- Animals
- Cell Cycle Checkpoints/genetics
- Cell Line
- Eukaryotic Initiation Factors/genetics
- Eukaryotic Initiation Factors/metabolism
- Gene Silencing
- Humans
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/metabolism
- Mice
- Mice, Transgenic
- Mutation
- Myelodysplastic Syndromes/genetics
- Myelodysplastic Syndromes/metabolism
- Myeloid Progenitor Cells/metabolism
- Nuclear Proteins/antagonists & inhibitors
- Nuclear Proteins/genetics
- Nuclear Proteins/metabolism
- Nucleophosmin
- RNA Processing, Post-Transcriptional
- RNA, Ribosomal, 28S/genetics
- RNA, Ribosomal, 28S/metabolism
- Ribosomes/genetics
- Ribosomes/metabolism
- Splicing Factor U2AF/genetics
- Splicing Factor U2AF/metabolism
- Tumor Suppressor Protein p53/genetics
- Tumor Suppressor Protein p53/metabolism
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Affiliation(s)
- Abdalla Akef
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Kathy McGraw
- Department of Malignant Hematology, Moffitt Cancer Center, Tampa, Florida, United States of America
| | - Steven D. Cappell
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Daniel R. Larson
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail:
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24
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Okuwaki M, Saito S, Hirawake-Mogi H, Nagata K. The interaction between nucleophosmin/NPM1 and the large ribosomal subunit precursors contribute to maintaining the nucleolar structure. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1868:118879. [PMID: 33039556 DOI: 10.1016/j.bbamcr.2020.118879] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 09/21/2020] [Accepted: 09/25/2020] [Indexed: 12/29/2022]
Abstract
Nucleoli are sites where both the large and small ribosomal subunits mature. Biochemical assays have suggested that a multivalent nucleolar protein, NPM1/nucleophosmin contributes to the formation of the outer layer of the nucleolus. Prior works show that NPM1 depletion disorganizes the nucleolar structure. However, the mechanism of how NPM1 regulates the nucleolar structure has been unknown. We demonstrated that NPM1 directly interacts with the large ribosomal subunits and maintains them in the nucleolus. Ectopically localized NPM1 efficiently recruits only the large ribosomal subunit precursors, while ectopically localized large ribosomal subunit by the ribosomal protein RPL4 efficiently recruits NPM1. These results suggest that the nucleolar localization of NPM1 and the large ribosomal subunit precursors are mutually dependent. Furthermore, proteomic and localization analyses suggest that NPM1 plays a crucial role in the accumulation of the late processing machinery of the large ribosomal subunits in the nucleolus. Our results suggest that NPM1 maintains the pre-ribosomes and assembly machinery in the nucleolus, which in turn determines the nucleolar volume.
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Affiliation(s)
- Mitsuru Okuwaki
- Department of Biochemistry, School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan; Department of Infection Biology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Japan.
| | - Shoko Saito
- Department of Biochemistry, School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan; Department of Infection Biology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Japan
| | - Hiroko Hirawake-Mogi
- Department of Biochemistry, School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Kyosuke Nagata
- Department of Infection Biology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Japan
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25
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Zhang L, Ding H, Zhang Y, Wang Y, Zhu W, Li P. Circulating MicroRNAs: Biogenesis and Clinical Significance in Acute Myocardial Infarction. Front Physiol 2020; 11:1088. [PMID: 33013463 PMCID: PMC7494963 DOI: 10.3389/fphys.2020.01088] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 08/06/2020] [Indexed: 02/06/2023] Open
Abstract
Acute myocardial infarction (AMI) causes many deaths around the world. Early diagnosis can prevent the development of AMI and provide theoretical support for the subsequent treatment. miRNAs participate in the AMI pathological processes. We aim to determine the early diagnostic and the prognostic roles of circulating miRNAs in AMI in the existing studies and summarize all the data to provide a greater understanding of their utility for clinical application. We reviewed current knowledge focused on the AMI development and circulating miRNA formation. Meanwhile, we collected and analyzed the potential roles of circulating miRNAs in AMI diagnosis, prognosis and therapeutic strategies. Additionally, we elaborated on the challenges and clinical perspectives of the application of circulating miRNAs in AMI diagnosis. Circulating miRNAs are stable in the circulation and have earlier increases of circulating levels than diagnostic golden criteria. In addition, they are tissue and disease-specific. All these characteristics indicate that circulating miRNAs are promising biomarkers for the early diagnosis of AMI. Although there are several limitations to be resolved before clinical use, the application of circulating miRNAs shows great potential in the early diagnosis and the prognosis of AMI.
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Affiliation(s)
- Lei Zhang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Han Ding
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Yuan Zhang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Yin Wang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Wenjie Zhu
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Peifeng Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
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26
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López DJ, Rodríguez JA, Bañuelos S. Nucleophosmin, a multifunctional nucleolar organizer with a role in DNA repair. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2020; 1868:140532. [PMID: 32853771 DOI: 10.1016/j.bbapap.2020.140532] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 08/05/2020] [Accepted: 08/07/2020] [Indexed: 12/12/2022]
Abstract
Nucleophosmin (NPM1) is a mostly nucleolar protein with crucial functions in cell growth and homeostasis, including regulation of ribosome biogenesis and stress response. Such multiple activities rely on its ability to interact with nucleic acids and with hundreds of proteins, as well as on a dynamic subcellular distribution. NPM1 is thus regulated by a complex interplay between localization and interactions, further modulated by post-translational modifications. NPM1 is a homopentamer, with globular domains connected by long, intrinsically disordered linkers. This configuration allows NPM1 to engage in liquid-liquid phase separation phenomena, which could underlie a key role in nucleolar organization. Here, we will discuss NPM1 conformational and functional versatility, emphasizing its emerging, and still largely unexplored, role in DNA damage repair. Since NPM1 is altered in a subtype of acute myeloid leukaemia (AML), we will also present ongoing research on the molecular mechanisms underlying its pathogenic role and potential NPM1-targeting therapeutic strategies.
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Affiliation(s)
- David J López
- Biofisika Institute (UPV/EHU, CSIC) and Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - José A Rodríguez
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Sonia Bañuelos
- Biofisika Institute (UPV/EHU, CSIC) and Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Leioa, Spain.
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27
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Cela I, Di Matteo A, Federici L. Nucleophosmin in Its Interaction with Ligands. Int J Mol Sci 2020; 21:E4885. [PMID: 32664415 PMCID: PMC7402337 DOI: 10.3390/ijms21144885] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/07/2020] [Accepted: 07/08/2020] [Indexed: 12/13/2022] Open
Abstract
Nucleophosmin (NPM1) is a mainly nucleolar protein that shuttles between nucleoli, nucleoplasm and cytoplasm to fulfill its many functions. It is a chaperone of both nucleic acids and proteins and plays a role in cell cycle control, centrosome duplication, ribosome maturation and export, as well as the cellular response to a variety of stress stimuli. NPM1 is a hub protein in nucleoli where it contributes to nucleolar organization through heterotypic and homotypic interactions. Furthermore, several alterations, including overexpression, chromosomal translocations and mutations are present in solid and hematological cancers. Recently, novel germline mutations that cause dyskeratosis congenita have also been described. This review focuses on NPM1 interactions and inhibition. Indeed, the list of NPM1 binding partners is ever-growing and, in recent years, many studies contributed to clarifying the structural basis for NPM1 recognition of both nucleic acids and several proteins. Intriguingly, a number of natural and synthetic ligands that interfere with NPM1 interactions have also been reported. The possible role of NPM1 inhibitors in the treatment of multiple cancers and other pathologies is emerging as a new therapeutic strategy.
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Affiliation(s)
- Ilaria Cela
- Center for Advanced Studies and Technology (CAST), University of Chieti “G. d’Annunzio”, Via Polacchi, 66100 Chieti, Italy;
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti “G. d’Annunzio”, Via dei Vestini 31, 66100 Chieti, Italy
| | - Adele Di Matteo
- Institute of Molecular Biology and Pathology (IBPM) of the CNR, c/o “Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Roma, Italy;
| | - Luca Federici
- Center for Advanced Studies and Technology (CAST), University of Chieti “G. d’Annunzio”, Via Polacchi, 66100 Chieti, Italy;
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti “G. d’Annunzio”, Via dei Vestini 31, 66100 Chieti, Italy
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28
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Hiregange D, Naick H, Rao BJ. ATR signalling mediates the prosurvival function of phospho-NPM against PIDDosome mediated cell death. Cell Signal 2020; 71:109602. [DOI: 10.1016/j.cellsig.2020.109602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 03/14/2020] [Indexed: 12/14/2022]
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29
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Johnstone CN, Pattison AD, Harrison PF, Powell DR, Lock P, Ernst M, Anderson RL, Beilharz TH. FGF13 promotes metastasis of triple-negative breast cancer. Int J Cancer 2020; 147:230-243. [PMID: 31957002 DOI: 10.1002/ijc.32874] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 12/01/2019] [Accepted: 12/09/2019] [Indexed: 12/13/2022]
Abstract
Triple-negative breast cancer (TNBC) represents 10-20% of all human ductal adenocarcinomas and has a poor prognosis relative to other subtypes, due to the high propensity to develop distant metastases. Hence, new molecular targets for therapeutic intervention are needed for TNBC. We recently conducted a rigorous phenotypic and genomic characterization of four isogenic populations of MDA-MB-231 human triple-negative breast cancer cells that possess a range of intrinsic spontaneous metastatic capacities in vivo, ranging from nonmetastatic (MDA-MB-231_ATCC) to highly metastatic to lung, liver, spleen and spine (MDA-MB-231_HM). Gene expression profiling of primary tumours by RNA-Seq identified the fibroblast growth factor homologous factor, FGF13, as highly upregulated in aggressively metastatic MDA-MB-231_HM tumours. Clinically, higher FGF13 mRNA expression was associated with significantly worse relapse free survival in both luminal A and basal-like human breast cancers but was not associated with other clinical variables and was not upregulated in primary tumours relative to normal mammary gland. Stable FGF13 depletion restricted in vitro colony forming ability in MDA-MB-231_HM TNBC cells but not in oestrogen receptor (ER)-positive MCF-7 or MDA-MB-361 cells. However, despite augmenting MDA-MB-231_HM cell migration and invasion in vitro, FGF13 suppression almost completely blocked the spontaneous metastasis of MDA-MB-231_HM orthotopic xenografts to both lung and liver while having negligible impact on primary tumour growth. Together, these data indicate that FGF13 may represent a therapeutic target for blocking metastatic outgrowth of certain TNBCs. Further evaluation of the roles of individual FGF13 protein isoforms in progression of the different subtypes of breast cancer is warranted.
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Affiliation(s)
- Cameron N Johnstone
- Cancer Research Division, Peter MacCallum Cancer Centre, Victorian Comprehensive Cancer Centre, Parkville, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia.,Department of Clinical Pathology, University of Melbourne, Parkville, VIC, Australia.,Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, VIC, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC, Australia
| | - Andrew D Pattison
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC, Australia.,Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Paul F Harrison
- Monash Bioinformatics Platform, Monash University, Clayton, VIC, Australia
| | - David R Powell
- Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.,Monash Bioinformatics Platform, Monash University, Clayton, VIC, Australia
| | - Peter Lock
- LIMS Bioimaging Facility, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, VIC, Australia
| | - Matthias Ernst
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, VIC, Australia
| | - Robin L Anderson
- Cancer Research Division, Peter MacCallum Cancer Centre, Victorian Comprehensive Cancer Centre, Parkville, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia.,Department of Clinical Pathology, University of Melbourne, Parkville, VIC, Australia.,Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, VIC, Australia
| | - Traude H Beilharz
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC, Australia.,Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.,Monash Bioinformatics Platform, Monash University, Clayton, VIC, Australia
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30
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von Kügelgen N, Chekulaeva M. Conservation of a core neurite transcriptome across neuronal types and species. WILEY INTERDISCIPLINARY REVIEWS-RNA 2020; 11:e1590. [PMID: 32059075 DOI: 10.1002/wrna.1590] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/20/2020] [Accepted: 01/23/2020] [Indexed: 12/23/2022]
Abstract
The intracellular localization of mRNAs allows neurons to control gene expression in neurite extensions (axons and dendrites) and respond rapidly to local stimuli. This plays an important role in diverse processes including neuronal growth and synaptic plasticity, which in turn serves as a foundation for learning and memory. Recent high-throughput analyses have revealed that neurites contain hundreds to thousands of mRNAs, but an analysis comparing the transcriptomes derived from these studies has been lacking. Here we analyze 20 datasets pertaining to neuronal mRNA localization across species and neuronal types and identify a conserved set of mRNAs that had robustly localized to neurites in a high number of the studies. The set includes mRNAs encoding for ribosomal proteins and other components of the translation machinery, mitochondrial proteins, cytoskeletal components, and proteins associated with neurite formation. Our combinatorial analysis provides a unique resource for future hypothesis-driven research. This article is categorized under: RNA Export and Localization > RNA Localization RNA Evolution and Genomics > Computational Analyses of RNA RNA Methods > RNA Analyses in Cells.
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Affiliation(s)
- Nicolai von Kügelgen
- Non-coding RNAs and Mechanisms of Cytoplasmic Gene Regulation, Berlin Institute for Medical Systems Biology, Max Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Marina Chekulaeva
- Non-coding RNAs and Mechanisms of Cytoplasmic Gene Regulation, Berlin Institute for Medical Systems Biology, Max Delbrück Center for Molecular Medicine, Berlin, Germany
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31
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López DJ, de Blas A, Hurtado M, García-Alija M, Mentxaka J, de la Arada I, Urbaneja MA, Alonso-Mariño M, Bañuelos S. Nucleophosmin interaction with APE1: Insights into DNA repair regulation. DNA Repair (Amst) 2020; 88:102809. [PMID: 32092641 DOI: 10.1016/j.dnarep.2020.102809] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 01/24/2020] [Accepted: 01/28/2020] [Indexed: 11/17/2022]
Abstract
Nucleophosmin (NPM1), an abundant, nucleolar protein with multiple functions affecting cell homeostasis, has also been recently involved in DNA damage repair. The roles of NPM1 in different repair pathways remain however to be elucidated. NPM1 has been described to interact with APE1 (apurinic apyrimidinic endonuclease 1), a key enzyme of the base excision repair (BER) pathway, which could reflect a direct participation of NPM1 in this route. To gain insight into the possible role(s) of NPM1 in BER, we have explored the interplay between the subnuclear localization of both APE1 and NPM1, the in vitro interaction they establish, the effect of binding to abasic DNA on APE1 conformation, and the modulation by NPM1 of APE1 binding and catalysis on DNA. We have found that, upon oxidative damage, NPM1 is released from nucleoli and locates on patches throughout the chromatin, perhaps co-localizing with APE1, and that this traffic could be mediated by phosphorylation of NPM1 on T199. NPM1 and APE1 form a complex in vitro, involving, apart from the core domain, at least part of the linker region of NPM1, whereas the C-terminal domain is dispensable for binding, which explains that an AML leukemia-related NPM1 mutant with an unfolded C-terminal domain can bind APE1. APE1 interaction with abasic DNA stabilizes APE1 structure, as based on thermal unfolding. Moreover, our data suggest that NPM1, maybe by keeping APE1 in an "open" conformation, favours specific recognition of abasic sites on DNA, competing with off-target associations. Therefore, NPM1 might participate in BER favouring APE1 target selection as well as turnover from incised abasic DNA.
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Affiliation(s)
- David J López
- Biofisika Institute (UPV/EHU, CSIC) and Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Ander de Blas
- Biofisika Institute (UPV/EHU, CSIC) and Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Mikel Hurtado
- Biofisika Institute (UPV/EHU, CSIC) and Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Mikel García-Alija
- Biofisika Institute (UPV/EHU, CSIC) and Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Jon Mentxaka
- Biofisika Institute (UPV/EHU, CSIC) and Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Igor de la Arada
- Biofisika Institute (UPV/EHU, CSIC) and Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - María A Urbaneja
- Biofisika Institute (UPV/EHU, CSIC) and Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Marián Alonso-Mariño
- Biofisika Institute (UPV/EHU, CSIC) and Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Sonia Bañuelos
- Biofisika Institute (UPV/EHU, CSIC) and Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Leioa, Spain.
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32
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Papaioannou D, Petri A, Dovey OM, Terreri S, Wang E, Collins FA, Woodward LA, Walker AE, Nicolet D, Pepe F, Kumchala P, Bill M, Walker CJ, Karunasiri M, Mrózek K, Gardner ML, Camilotto V, Zitzer N, Cooper JL, Cai X, Rong-Mullins X, Kohlschmidt J, Archer KJ, Freitas MA, Zheng Y, Lee RJ, Aifantis I, Vassiliou G, Singh G, Kauppinen S, Bloomfield CD, Dorrance AM, Garzon R. The long non-coding RNA HOXB-AS3 regulates ribosomal RNA transcription in NPM1-mutated acute myeloid leukemia. Nat Commun 2019; 10:5351. [PMID: 31767858 PMCID: PMC6877618 DOI: 10.1038/s41467-019-13259-2] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 10/28/2019] [Indexed: 12/21/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) are important regulatory molecules that are implicated in cellular physiology and pathology. In this work, we dissect the functional role of the HOXB-AS3 lncRNA in patients with NPM1-mutated (NPM1mut) acute myeloid leukemia (AML). We show that HOXB-AS3 regulates the proliferative capacity of NPM1mut AML blasts in vitro and in vivo. HOXB-AS3 is shown to interact with the ErbB3-binding protein 1 (EBP1) and guide EBP1 to the ribosomal DNA locus. Via this mechanism, HOXB-AS3 regulates ribosomal RNA transcription and de novo protein synthesis. We propose that in the context of NPM1 mutations, HOXB-AS3 overexpression acts as a compensatory mechanism, which allows adequate protein production in leukemic blasts.
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MESH Headings
- Acute Disease
- Animals
- Cell Line, Tumor
- Cell Proliferation
- HEK293 Cells
- Humans
- K562 Cells
- Leukemia, Myeloid/genetics
- Leukemia, Myeloid/pathology
- Mice, Inbred NOD
- Mice, Knockout
- Mice, SCID
- Mutation
- Nuclear Proteins/genetics
- Nucleophosmin
- Protein Biosynthesis/genetics
- RNA, Long Noncoding/genetics
- RNA, Ribosomal/genetics
- THP-1 Cells
- Transcription, Genetic
- Transplantation, Heterologous
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Affiliation(s)
| | - Andreas Petri
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark
| | - Oliver M Dovey
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge, UK
| | - Sara Terreri
- Institute of Genetics and Biophysics (IGB-ABT), National Council of Research (CNR), Naples, Italy
| | - Eric Wang
- Department of Pathology, New York University School of Medicine, New York, NY, USA
| | - Frances A Collins
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
| | - Lauren A Woodward
- Department of Molecular Genetics, Center for RNA Biology, The Ohio State University, Columbus, OH, USA
| | - Allison E Walker
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
| | - Deedra Nicolet
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
- Alliance for Clinical Trials in Oncology Statistics and Data Center, The Ohio State University, Columbus, OH, USA
| | - Felice Pepe
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
| | - Prasanthi Kumchala
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
| | - Marius Bill
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
| | | | - Malith Karunasiri
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
| | - Krzysztof Mrózek
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
| | - Miranda L Gardner
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
- Department of Cancer Biology and Genetics, The Ohio State University, Columbus, OH, USA
| | - Virginia Camilotto
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge, UK
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Nina Zitzer
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
| | - Jonathan L Cooper
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge, UK
| | - Xiongwei Cai
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, OH, USA
| | - Xiaoqing Rong-Mullins
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
- Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, OH, USA
| | - Jessica Kohlschmidt
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
- Alliance for Clinical Trials in Oncology Statistics and Data Center, The Ohio State University, Columbus, OH, USA
| | - Kellie J Archer
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
- Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, OH, USA
| | - Michael A Freitas
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
- Department of Cancer Biology and Genetics, The Ohio State University, Columbus, OH, USA
| | - Yi Zheng
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, OH, USA
| | - Robert J Lee
- Division of Pharmaceutics, College of Pharmacy, The Ohio State University, Columbus, OH, USA
| | - Iannis Aifantis
- Department of Pathology, New York University School of Medicine, New York, NY, USA
| | - George Vassiliou
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge, UK
- Department of Haematology, Cambridge University Hospitals NHS Trust, Cambridge, UK
| | - Guramrit Singh
- Department of Molecular Genetics, Center for RNA Biology, The Ohio State University, Columbus, OH, USA
| | - Sakari Kauppinen
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark
| | - Clara D Bloomfield
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
| | | | - Ramiro Garzon
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA.
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33
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Oka M, Mura S, Otani M, Miyamoto Y, Nogami J, Maehara K, Harada A, Tachibana T, Yoneda Y, Ohkawa Y. Chromatin-bound CRM1 recruits SET-Nup214 and NPM1c onto HOX clusters causing aberrant HOX expression in leukemia cells. eLife 2019; 8:e46667. [PMID: 31755865 PMCID: PMC6874418 DOI: 10.7554/elife.46667] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 10/30/2019] [Indexed: 12/14/2022] Open
Abstract
We previously demonstrated that CRM1, a major nuclear export factor, accumulates at Hox cluster regions to recruit nucleoporin-fusion protein Nup98HoxA9, resulting in robust activation of Hox genes (Oka et al., 2016). However, whether this phenomenon is general to other leukemogenic proteins remains unknown. Here, we show that two other leukemogenic proteins, nucleoporin-fusion SET-Nup214 and the NPM1 mutant, NPM1c, which contains a nuclear export signal (NES) at its C-terminus and is one of the most frequent mutations in acute myeloid leukemia, are recruited to the HOX cluster region via chromatin-bound CRM1, leading to HOX gene activation in human leukemia cells. Furthermore, we demonstrate that this mechanism is highly sensitive to a CRM1 inhibitor in leukemia cell line. Together, these findings indicate that CRM1 acts as a key molecule that connects leukemogenic proteins to aberrant HOX gene regulation either via nucleoporin-CRM1 interaction (for SET-Nup214) or NES-CRM1 interaction (for NPM1c).
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Affiliation(s)
- Masahiro Oka
- Laboratory of Nuclear Transport DynamicsNational Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN)OsakaJapan
- Laboratory of Biomedical Innovation, Graduate School of Pharmaceutical SciencesOsaka UniversityOsakaJapan
| | - Sonoko Mura
- Biomolecular Dynamics Group, Graduate School of Frontier BiosciencesOsaka UniversityOsakaJapan
| | - Mayumi Otani
- Laboratory of Nuclear Transport DynamicsNational Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN)OsakaJapan
| | - Yoichi Miyamoto
- Laboratory of Nuclear Transport DynamicsNational Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN)OsakaJapan
| | - Jumpei Nogami
- Department of Advanced Medical Initiatives, Faculty of MedicineKyushu UniversityFukuokaJapan
| | - Kazumitsu Maehara
- Department of Advanced Medical Initiatives, Faculty of MedicineKyushu UniversityFukuokaJapan
| | - Akihito Harada
- Department of Advanced Medical Initiatives, Faculty of MedicineKyushu UniversityFukuokaJapan
| | - Taro Tachibana
- Department of Bioengineering, Graduate School of EngineeringOsaka City UniversityOsakaJapan
| | - Yoshihiro Yoneda
- Laboratory of Biomedical Innovation, Graduate School of Pharmaceutical SciencesOsaka UniversityOsakaJapan
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN)OsakaJapan
| | - Yasuyuki Ohkawa
- Department of Advanced Medical Initiatives, Faculty of MedicineKyushu UniversityFukuokaJapan
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Cui M, Wang H, Yao X, Zhang D, Xie Y, Cui R, Zhang X. Circulating MicroRNAs in Cancer: Potential and Challenge. Front Genet 2019; 10:626. [PMID: 31379918 PMCID: PMC6656856 DOI: 10.3389/fgene.2019.00626] [Citation(s) in RCA: 275] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 06/17/2019] [Indexed: 12/12/2022] Open
Abstract
MicroRNAs (miRNAs) are endogenous non-coding small RNA molecules that can be secreted into the circulation and exist in remarkably stable forms. Like intercellular miRNAs, circulating miRNAs participate in numerous regulations of biological process and expressed aberrantly under abnormal or pathological status. The quality and quantity changes of circulating miRNAs are associated with the initiation and progression of cancer and can be easily detected by basic molecular biology techniques. Consequently, considerable effort has been devoted to identify suitable extracellular miRNAs for noninvasive biomarkers in cancer. However, several challenges need to be overcome before the practical application. In this review, we discuss several issues of circulating miRNAs: biological function and basic transport carriers; extracellular cell communication process; roles as reliable cancer biomarkers and usage in targeted cancer therapy; and challenges for clinical application.
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Affiliation(s)
- Mengying Cui
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Hongdan Wang
- Department of Anesthesiology, The First Hospital of Jilin University, Changchun, China
| | - Xiaoxiao Yao
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Dan Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Yingjun Xie
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Ranji Cui
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, The Second Hospital of Jilin University, Changchun, China
| | - Xuewen Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, China
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35
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Kaowinn S, Seo EJ, Heo W, Bae JH, Park EJ, Lee S, Kim YJ, Koh SS, Jang IH, Shin DH, Chung YH. Cancer upregulated gene 2 (CUG2), a novel oncogene, promotes stemness-like properties via the NPM1-TGF-β signaling axis. Biochem Biophys Res Commun 2019; 514:1278-1284. [DOI: 10.1016/j.bbrc.2019.05.091] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 05/12/2019] [Indexed: 01/18/2023]
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Oliveira V, Mahajan N, Bates ML, Tripathi C, Kim KQ, Zaher HS, Maggi Jr LB, Tomasson MH. The snoRNA target of t(4;14) in multiple myeloma regulates ribosome biogenesis. FASEB Bioadv 2019; 1:404-414. [PMID: 32095781 PMCID: PMC6996358 DOI: 10.1096/fba.2018-00075] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 12/10/2018] [Accepted: 04/08/2019] [Indexed: 12/31/2022] Open
Abstract
The orphan small nucleolar RNA (snoRNA) ACA11 is overexpressed as a result of the t(4;14) chromosomal translocation in multiple myeloma (MM), increases reactive oxygen species, and drives cell proliferation. Like other snoRNAs, ACA11 is predominantly localized to a sub-nuclear organelle, the nucleolus. We hypothesized that increased ACA11 expression would increase ribosome biogenesis and protein synthesis. We found that ACA11 overexpression in MM cells increased nucleolar area and number as well as silver-binding nucleolar organizing regions (AgNORs). Supporting these data, samples from t(4;14)-positive patients had higher AgNORs scores than t(4;14)-negative samples. ACA11 also upregulated ribosome production, pre-47S rRNA synthesis, and protein synthesis in a ROS-dependent manner. Lastly, ACA11 overexpression enhanced the response to proteasome inhibitor in MM cells, while no effect was found in response to high doses of melphalan. Together, these data demonstrate that ACA11 stimulates ribosome biogenesis and influences responses to chemotherapy. ACA11 may be a useful target to individualize the treatment for t(4;14)-positive myeloma patients.
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Affiliation(s)
- Vanessa Oliveira
- Division of Hematology, Oncology and Bone Marrow Transplantation, Department of Internal MedicineUniversity of IowaIowa CityIowa
| | - Nitin Mahajan
- Division of Oncology, Department of MedicineSiteman Cancer Center, Washington University School of MedicineSt. LouisMissouri
| | - Melissa L. Bates
- Department of Health and Human PhysiologyUniversity of IowaIowa CityIowa
- Stead Family Department of PediatricsUniversity of IowaIowa CityIowa
- Holden Comprehensive Cancer CenterUniversity of IowaIowa CityIowa
| | - Chakrapani Tripathi
- Division of Hematology, Oncology and Bone Marrow Transplantation, Department of Internal MedicineUniversity of IowaIowa CityIowa
| | - Kyusik Q. Kim
- Department of BiologyWashington UniversitySt. LouisMissouri
| | - Hani S. Zaher
- Department of BiologyWashington UniversitySt. LouisMissouri
| | - Leonard B. Maggi Jr
- Division of Oncology, Department of MedicineSiteman Cancer Center, Washington University School of MedicineSt. LouisMissouri
| | - Michael H. Tomasson
- Division of Hematology, Oncology and Bone Marrow Transplantation, Department of Internal MedicineUniversity of IowaIowa CityIowa
- Holden Comprehensive Cancer CenterUniversity of IowaIowa CityIowa
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Pfister AS. Emerging Role of the Nucleolar Stress Response in Autophagy. Front Cell Neurosci 2019; 13:156. [PMID: 31114481 PMCID: PMC6503120 DOI: 10.3389/fncel.2019.00156] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/08/2019] [Indexed: 12/12/2022] Open
Abstract
Autophagy represents a conserved self-digestion program, which allows regulated degradation of cellular material. Autophagy is activated by cellular stress, serum starvation and nutrient deprivation. Several autophagic pathways have been uncovered, which either non-selectively or selectively target the cellular cargo for lysosomal degradation. Autophagy engages the coordinated action of various key regulators involved in the steps of autophagosome formation, cargo targeting and lysosomal fusion. While non-selective (macro)autophagy is required for removal of bulk material or recycling of nutrients, selective autophagy mediates specific targeting of damaged organelles or protein aggregates. By proper action of the autophagic machinery, cellular homeostasis is maintained. In contrast, failure of this fundamental process is accompanied by severe pathophysiological conditions. Hallmarks of neuropathological disorders are for instance accumulated, mis-folded protein aggregates and damaged mitochondria. The nucleolus has been recognized as central hub in the cellular stress response. It represents a sub-nuclear organelle essential for ribosome biogenesis and also functions as stress sensor by mediating cell cycle arrest or apoptosis. Thus, proper nucleolar function is mandatory for cell growth and survival. Here, I highlight the emerging role of nucleolar factors in the regulation of autophagy. Moreover, I discuss the nucleolar stress response as a novel signaling pathway in the context of autophagy, health and disease.
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Affiliation(s)
- Astrid S Pfister
- Institute of Biochemistry and Molecular Biology, Faculty of Medicine, Ulm University, Ulm, Germany
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Turi Z, Lacey M, Mistrik M, Moudry P. Impaired ribosome biogenesis: mechanisms and relevance to cancer and aging. Aging (Albany NY) 2019; 11:2512-2540. [PMID: 31026227 PMCID: PMC6520011 DOI: 10.18632/aging.101922] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 04/04/2019] [Indexed: 02/06/2023]
Abstract
The biosynthesis of ribosomes is a complex process that requires the coordinated action of many factors and a huge energy investment from the cell. Ribosomes are essential for protein production, and thus for cellular survival, growth and proliferation. Ribosome biogenesis is initiated in the nucleolus and includes: the synthesis and processing of ribosomal RNAs, assembly of ribosomal proteins, transport to the cytoplasm and association of ribosomal subunits. The disruption of ribosome biogenesis at various steps, with either increased or decreased expression of different ribosomal components, can promote cell cycle arrest, senescence or apoptosis. Additionally, interference with ribosomal biogenesis is often associated with cancer, aging and age-related degenerative diseases. Here, we review current knowledge on impaired ribosome biogenesis, discuss the main factors involved in stress responses under such circumstances and focus on examples with clinical relevance.
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Affiliation(s)
- Zsofia Turi
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic
| | - Matthew Lacey
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic
| | - Martin Mistrik
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic
| | - Pavel Moudry
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic
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Brodská B, Šašinková M, Kuželová K. Nucleophosmin in leukemia: Consequences of anchor loss. Int J Biochem Cell Biol 2019; 111:52-62. [PMID: 31009764 DOI: 10.1016/j.biocel.2019.04.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/17/2019] [Accepted: 04/18/2019] [Indexed: 12/17/2022]
Abstract
Nucleophosmin (NPM), one of the most abundant nucleolar proteins, has crucial functions in ribosome biogenesis, cell cycle control, and DNA-damage repair. In human cells, NPM occurs mainly in oligomers. It functions as a chaperone, undergoes numerous interactions and forms part of many protein complexes. Although NPM role in carcinogenesis is not fully elucidated, a variety of tumor suppressor as well as oncogenic activities were described. NPM is overexpressed, fused with other proteins, or mutated in various tumor types. In the acute myeloid leukemia (AML), characteristic mutations in NPM1 gene, leading to modification of NPM C-terminus, are the most frequent genetic aberration. Although multiple mutation types of NPM are found in AML, they are all characterized by aberrant cytoplasmic localization of the mutated protein. In this review, current knowledge of the structure and function of NPM is presented in relation to its interaction network, in particular to the interaction with other nucleolar proteins and with proteins active in apoptosis. Possible molecular mechanisms of NPM mutation-driven leukemogenesis and NPM therapeutic targeting are discussed. Finally, recent findings concerning the immunogenicity of the mutated NPM and specific immunological features of AML patients with NPM mutation are summarized.
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Affiliation(s)
- Barbora Brodská
- Institute of Hematology and Blood Transfusion, U Nemocnice 1, 128 20 Prague 2, Czech Republic
| | - Markéta Šašinková
- Institute of Hematology and Blood Transfusion, U Nemocnice 1, 128 20 Prague 2, Czech Republic
| | - Kateřina Kuželová
- Institute of Hematology and Blood Transfusion, U Nemocnice 1, 128 20 Prague 2, Czech Republic.
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40
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Wang X, Ma H, Wang X. Nucleophosmin/B23 contributes to hepatic insulin resistance through the modulation of NF-κB pathway. Biochem Biophys Res Commun 2019; 511:214-220. [PMID: 30799086 DOI: 10.1016/j.bbrc.2019.01.127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 01/29/2019] [Indexed: 02/06/2023]
Abstract
Nucleophosmin (NPM)/B23 is an important nucleolar phosphoprotein involved in the regulation of assorted cellular signaling pathways. In the present study, we revealed a critical role of NPM in liver insulin resistance. NPM is markedly upregulated in insulin-resistant liver tissues and palmitic acid (PA)-exposed HepG2 cells both at mRNA and protein levels. Ectopic expression of NPM in hepatocytes aggravated PA-induced insulin resistance, lipid droplet accumulation, glucose intake impairment as well as the expression of gluconeogenic genes. Coinciding with these results, interference of NPM using small interfering RNA (siRNA) oligos ameliorated PA-induced insulin resistance, as revealed by increased phosphorylation of AKT and GSK3β following insulin treatment. As predicted, PA-triggered alterations in glucose intake and the expression of gluconeogenic enzymes were attenuated following NPM depletion. Finally, we showed that NPM plays an indispensible role in PA-induced activation of NF-κB pathway. Both of NF-κB p65 phosphorylation and nuclear translocation were impeded by NPM interference in PA-treated HepG2 cells. Taken together, these findings explicitly demonstrate that NPM participates in the development of liver insulin resistance, suggesting that NPM may serve as a potential therapeutic target of type 2 diabetes.
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Affiliation(s)
- Xiaohua Wang
- Department of Endocrinology, The Second Affiliated Hospital of Nantong University, Nantong University, 226001, Nantong, Jiangsu, PR China
| | - Hong Ma
- Department of Endocrinology, The Second Affiliated Hospital of Nantong University, Nantong University, 226001, Nantong, Jiangsu, PR China; Department of Endocrinology, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001, Jiangsu Province, PR China
| | - Xueqin Wang
- Department of Endocrinology, The Second Affiliated Hospital of Nantong University, Nantong University, 226001, Nantong, Jiangsu, PR China.
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Brunetti L, Gundry MC, Goodell MA. New insights into the biology of acute myeloid leukemia with mutated NPM1. Int J Hematol 2019; 110:150-160. [DOI: 10.1007/s12185-018-02578-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 12/25/2018] [Indexed: 12/20/2022]
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Zhang L, Zhang Y, Zhao Y, Wang Y, Ding H, Xue S, Li P. Circulating miRNAs as biomarkers for early diagnosis of coronary artery disease. Expert Opin Ther Pat 2018; 28:591-601. [PMID: 30064285 DOI: 10.1080/13543776.2018.1503650] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Coronary artery disease (CAD) contributes to a huge number of human death worldwide. The early diagnosis can arrest the development of CAD and effectively lower the mortality rate. Recently, circulating miRNAs emerged as CAD biomarkers. AREAS COVERED Many efforts were paid to explore early diagnostic biomarkers of CAD. Some proteins have been used as diagnostic golden standard. However, the diagnostic and prognostic value of them is limited. MicroRNAs (miRNAs), a class of small noncoding RNAs, have been illustrated to regulate gene expression. The dysfunction of miRNAs is associated with CAD. MiRNAs presenting stably in body fluids are called circulating miRNAs. The altered expression of specific circulating miRNAs has been discovered in CAD and reported to affect the pathogenesis of CAD. We reviewed the recent data about circulating miRNAs regarding their potential roles in diagnosis, prognosis and therapeutic strategies for CAD. Additionally, we also summarized the current knowledge about circulating miRNA formation and detection. EXPERT OPINION Compared with traditional diagnostic tools, circulating miRNAs have many strongpoints, suggesting that circulating miRNAs can serve as promising biomarkers for the early diagnosis and prognosis of CAD.
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Affiliation(s)
- Lei Zhang
- a Institute for Translational Medicine, Qingdao University , Qingdao , China
| | - Yuan Zhang
- a Institute for Translational Medicine, Qingdao University , Qingdao , China
| | - Yanfang Zhao
- a Institute for Translational Medicine, Qingdao University , Qingdao , China
| | - Yu Wang
- a Institute for Translational Medicine, Qingdao University , Qingdao , China
| | - Han Ding
- a Institute for Translational Medicine, Qingdao University , Qingdao , China
| | - Sheng Xue
- a Institute for Translational Medicine, Qingdao University , Qingdao , China
| | - Peifeng Li
- a Institute for Translational Medicine, Qingdao University , Qingdao , China
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Interplay between human nucleolar GNL1 and RPS20 is critical to modulate cell proliferation. Sci Rep 2018; 8:11421. [PMID: 30061673 PMCID: PMC6065441 DOI: 10.1038/s41598-018-29802-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 07/13/2018] [Indexed: 12/29/2022] Open
Abstract
Human Guanine nucleotide binding protein like 1 (GNL1) belongs to HSR1_MMR1 subfamily of nucleolar GTPases. Here, we report for the first time that GNL1 promotes cell cycle and proliferation by inducing hyperphosphorylation of retinoblastoma protein. Using yeast two-hybrid screening, Ribosomal protein S20 (RPS20) was identified as a functional interacting partner of GNL1. Results from GST pull-down and co-immunoprecipitation assays confirmed that interaction between GNL1 and RPS20 was specific. Further, GNL1 induced cell proliferation was altered upon knockdown of RPS20 suggesting its critical role in GNL1 function. Interestingly, cell proliferation was significantly impaired upon expression of RPS20 interaction deficient GNL1 mutant suggest that GNL1 interaction with RPS20 is critical for cell growth. Finally, the inverse correlation of GNL1 and RPS20 expression in primary colon and gastric cancers with patient survival strengthen their critical importance during tumorigenesis. Collectively, our data provided evidence that cross-talk between GNL1 and RPS20 is critical to promote cell proliferation.
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44
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Ivanov AV, Gopanenko AV, Malygin AA, Karpova GG. The eS26 protein is involved in the formation of a nucleophosmin binding site on the human 40S ribosomal subunit. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2018; 1866:642-650. [PMID: 29563070 DOI: 10.1016/j.bbapap.2018.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 02/15/2018] [Accepted: 03/15/2018] [Indexed: 01/15/2023]
Abstract
Human ribosomal protein eS26 is an indispensable component of the small (40S) ribosomal subunit and, along with other ribosomal proteins, is involved in interaction with mRNAs during translation. Here, we explored the behavior of the exogenous ribosomal protein eS26 modified at the C-terminus in the events related to translation in human cells using a doxycycline-inducible HEK293-derived cell line enabling the stable production of C-terminal FLAG-tagged eS26 (eS26FLAG). The production of eS26FLAG in cells was accompanied by a decrease in the endogenous eS26 content although its mRNA level did not change. Exogenous eS26FLAG was able to replace endogenous eS26 in 40S ribosomal subunits, without affecting the assembly and translational activity of 80S ribosomes. However, eS26FLAG-containing ribosome fractions from the respective polysome profile displayed a reduced content of nucleophosmin, a multifunctional protein, which, as is known, is involved in the formation and nuclear export of ribosomal subunits. In general, our data showed that although the appearance of the FLAG tag at the C-terminus of eS26 does not affect translation, it interferes with nucleophosmin incorporation into the 40S subunit, pointing out the importance of the C-terminus integrity of eS26 for nucleophosmin binding. In addition, with the recombinant protein, we demonstrated the binding of nucleophosmin to both isolated eS26 and 40S subunits in the presence of HeLa nuclear extract that phosphorylated the recombinant nucleophosmin. These findings suggest that for nuclear export, nucleophosmin could directly bind to pre-40S subunits in the mRNA exit site region where the C-terminus of eS26 is located.
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Affiliation(s)
- Anton V Ivanov
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Alexander V Gopanenko
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia; Novosibirsk State University, Novosibirsk, Russia
| | - Alexey A Malygin
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia; Novosibirsk State University, Novosibirsk, Russia
| | - Galina G Karpova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia; Novosibirsk State University, Novosibirsk, Russia.
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45
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Sakashita G, Kiyoi H, Naoe T, Urano T. Analysis of the oligomeric states of nucleophosmin using size exclusion chromatography. Sci Rep 2018; 8:4008. [PMID: 29507312 PMCID: PMC5838202 DOI: 10.1038/s41598-018-22359-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 02/21/2018] [Indexed: 12/18/2022] Open
Abstract
Nucleophosmin (NPM1) is a multifunctional phosphoprotein which plays important roles in diverse biological processes. NPM1 can form homo- or hetero-oligomers through its N-terminal region, and bind DNA and RNA through its C-terminal region. However, the monomer-oligomer distribution of NPM1, and the extent of NPM1 binding and unbinding to RNA in living cells, are not fully understood. In this work, we analysed molecular complexes of NPM1 using size exclusion chromatography. We found that a substantial fraction of NPM1 behaves as an oligomer in HeLa cells. Furthermore, we identified three distinct oligomeric states of NPM1 using molecular characterization techniques such as subcellular localization and RNA binding. Finally, we found that heterozygous expression of a leukemia-associated NPM1 mutant significantly decreases the RNA binding level. Our data demonstrate that size exclusion chromatography provides a powerful tool for analysing NPM1 oligomers.
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Affiliation(s)
- Gyosuke Sakashita
- Department of Biochemistry, Shimane University School of Medicine, Izumo, 693-8501, Japan.
| | - Hitoshi Kiyoi
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, 466-8550, Japan
| | - Tomoki Naoe
- National Hospital Organization Nagoya Medical Centre, Nagoya, 460-0001, Japan
| | - Takeshi Urano
- Department of Biochemistry, Shimane University School of Medicine, Izumo, 693-8501, Japan
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Sladky V, Schuler F, Fava LL, Villunger A. The resurrection of the PIDDosome - emerging roles in the DNA-damage response and centrosome surveillance. J Cell Sci 2018; 130:3779-3787. [PMID: 29142064 DOI: 10.1242/jcs.203448] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The PIDDosome is often used as the alias for a multi-protein complex that includes the p53-induced death domain protein 1 (PIDD1), the bipartite linker protein CRADD (also known as RAIDD) and the pro-form of an endopeptidase belonging to the caspase family, i.e. caspase-2. Yet, PIDD1 variants can also interact with a number of other proteins that include RIPK1 (also known as RIP1) and IKBKG (also known as NEMO), PCNA and RFC5, as well as nucleolar components such as NPM1 or NCL. This promiscuity in protein binding is facilitated mainly by autoprocessing of the full-length protein into various fragments that contain different structural domains. As a result, multiple responses can be mediated by protein complexes that contain a PIDD1 domain. This suggests that PIDD1 acts as an integrator for multiple types of stress that need instant attention. Examples are various types of DNA lesion but also the presence of extra centrosomes that can foster aneuploidy and, ultimately, promote DNA damage. Here, we review the role of PIDD1 in response to DNA damage and also highlight novel functions of PIDD1, such as in centrosome surveillance and scheduled polyploidisation as part of a cellular differentiation program during organogenesis.
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Affiliation(s)
- Valentina Sladky
- Division of Developmental Immunology, Biocenter, Medical University of Innsbruck, Innrain 80, 6020 Innsbruck, Austria
| | - Fabian Schuler
- Division of Developmental Immunology, Biocenter, Medical University of Innsbruck, Innrain 80, 6020 Innsbruck, Austria
| | - Luca L Fava
- Division of Developmental Immunology, Biocenter, Medical University of Innsbruck, Innrain 80, 6020 Innsbruck, Austria.,Center for Integrative Biology (CIBIO), University of Trento, Via Sommarive 9, 38123 Povo, Italy
| | - Andreas Villunger
- Division of Developmental Immunology, Biocenter, Medical University of Innsbruck, Innrain 80, 6020 Innsbruck, Austria
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47
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Mitrea DM, Cika JA, Stanley CB, Nourse A, Onuchic PL, Banerjee PR, Phillips AH, Park CG, Deniz AA, Kriwacki RW. Self-interaction of NPM1 modulates multiple mechanisms of liquid-liquid phase separation. Nat Commun 2018; 9:842. [PMID: 29483575 PMCID: PMC5827731 DOI: 10.1038/s41467-018-03255-3] [Citation(s) in RCA: 260] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 01/31/2018] [Indexed: 12/20/2022] Open
Abstract
Nucleophosmin (NPM1) is an abundant, oligomeric protein in the granular component of the nucleolus with roles in ribosome biogenesis. Pentameric NPM1 undergoes liquid-liquid phase separation (LLPS) via heterotypic interactions with nucleolar components, including ribosomal RNA (rRNA) and proteins which display multivalent arginine-rich linear motifs (R-motifs), and is integral to the liquid-like nucleolar matrix. Here we show that NPM1 can also undergo LLPS via homotypic interactions between its polyampholytic intrinsically disordered regions, a mechanism that opposes LLPS via heterotypic interactions. Using a combination of biophysical techniques, including confocal microscopy, SAXS, analytical ultracentrifugation, and single-molecule fluorescence, we describe how conformational changes within NPM1 control valency and switching between the different LLPS mechanisms. We propose that this newly discovered interplay between multiple LLPS mechanisms may influence the direction of vectorial pre-ribosomal particle assembly within, and exit from the nucleolus as part of the ribosome biogenesis process.
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Affiliation(s)
- Diana M Mitrea
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Jaclyn A Cika
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
- Integrative Biomedical Sciences Program, University of Tennessee Health Sciences Center, Memphis, TN, 38163, USA
- Department of Biochemistry and Molecular Pharmacology, NYU Langone Medical Center, New York, NY, 10016, USA
| | - Christopher B Stanley
- Biology and Biomedical Sciences Group, Biology and Soft Matter Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA
| | - Amanda Nourse
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
- Molecular Interaction Analysis Shared Resource, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Paulo L Onuchic
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Priya R Banerjee
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA, 92037, USA
- Department of Physics, University of Buffalo, Buffalo, NY, 14260, USA
| | - Aaron H Phillips
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Cheon-Gil Park
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Ashok A Deniz
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Richard W Kriwacki
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA.
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Sciences Center, Memphis, TN, 38163, USA.
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Boudra R, Lagrafeuille R, Lours-Calet C, de Joussineau C, Loubeau-Legros G, Chaveroux C, Saru JP, Baron S, Morel L, Beaudoin C. mTOR transcriptionally and post-transcriptionally regulates Npm1 gene expression to contribute to enhanced proliferation in cells with Pten inactivation. Cell Cycle 2018; 15:1352-62. [PMID: 27050906 DOI: 10.1080/15384101.2016.1166319] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The mammalian target of rapamycin (mTOR) plays essential roles in the regulation of growth-related processes such as protein synthesis, cell sizing and metabolism in both normal and pathological growing conditions. These functions of mTOR are thought to be largely a consequence of its cytoplasmic activity in regulating translation rate, but accumulating data highlight supplementary role(s) for this serine/threonine kinase within the nucleus. Indeed, the nuclear activities of mTOR are currently associated with the control of protein biosynthetic capacity through its ability to regulate the expression of gene products involved in the control of ribosomal biogenesis and proliferation. Using primary murine embryo fibroblasts (MEFs), we observed that cells with overactive mTOR signaling displayed higher abundance for the growth-associated Npm1 protein, in what represents a novel mechanism of Npm1 gene regulation. We show that Npm1 gene expression is dependent on mTOR as demonstrated by treatment of wild-type and Pten inactivated MEFs cultured with rapamycin or by transient transfections of small interfering RNA directed against mTOR. In accordance, the mTOR kinase localizes to the Npm1 promoter gene in vivo and it enhances the activity of a human NPM1-luciferase reporter gene providing an opportunity for direct control. Interestingly, rapamycin did not dislodge mTOR from the Npm1 promoter but rather strongly destabilized the Npm1 transcript by increasing its turnover. Using a prostate-specific Pten-deleted mouse model of cancer, Npm1 mRNA levels were found up-regulated and sensitive to rapamycin. Finally, we also showed that Npm1 is required to promote mTOR-dependent cell proliferation. We therefore proposed a model whereby mTOR is closely involved in the transcriptional and posttranscriptional regulation of Npm1 gene expression with implications in development and diseases including cancer.
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Affiliation(s)
- Rafik Boudra
- a Université Clermont Auvergne, Université Blaise Pascal, GReD , BP 10448 , Clermont-Ferrand , France.,b CNRS, UMR6293, GReD , Clermont-Ferrand , France.,c Inserm, UMR1103, GReD , Clermont-Ferrand , France
| | - Rosyne Lagrafeuille
- a Université Clermont Auvergne, Université Blaise Pascal, GReD , BP 10448 , Clermont-Ferrand , France.,b CNRS, UMR6293, GReD , Clermont-Ferrand , France.,c Inserm, UMR1103, GReD , Clermont-Ferrand , France
| | - Corinne Lours-Calet
- a Université Clermont Auvergne, Université Blaise Pascal, GReD , BP 10448 , Clermont-Ferrand , France.,b CNRS, UMR6293, GReD , Clermont-Ferrand , France.,c Inserm, UMR1103, GReD , Clermont-Ferrand , France
| | - Cyrille de Joussineau
- a Université Clermont Auvergne, Université Blaise Pascal, GReD , BP 10448 , Clermont-Ferrand , France.,b CNRS, UMR6293, GReD , Clermont-Ferrand , France.,c Inserm, UMR1103, GReD , Clermont-Ferrand , France
| | - Gaëlle Loubeau-Legros
- a Université Clermont Auvergne, Université Blaise Pascal, GReD , BP 10448 , Clermont-Ferrand , France.,b CNRS, UMR6293, GReD , Clermont-Ferrand , France.,c Inserm, UMR1103, GReD , Clermont-Ferrand , France
| | - Cédric Chaveroux
- d Inserm U1052, CNRS UMR5286, Center de Recherche en Cancérologie de Lyon , Lyon , France
| | - Jean-Paul Saru
- a Université Clermont Auvergne, Université Blaise Pascal, GReD , BP 10448 , Clermont-Ferrand , France.,b CNRS, UMR6293, GReD , Clermont-Ferrand , France.,c Inserm, UMR1103, GReD , Clermont-Ferrand , France
| | - Silvère Baron
- a Université Clermont Auvergne, Université Blaise Pascal, GReD , BP 10448 , Clermont-Ferrand , France.,b CNRS, UMR6293, GReD , Clermont-Ferrand , France.,c Inserm, UMR1103, GReD , Clermont-Ferrand , France
| | - Laurent Morel
- a Université Clermont Auvergne, Université Blaise Pascal, GReD , BP 10448 , Clermont-Ferrand , France.,b CNRS, UMR6293, GReD , Clermont-Ferrand , France.,c Inserm, UMR1103, GReD , Clermont-Ferrand , France
| | - Claude Beaudoin
- a Université Clermont Auvergne, Université Blaise Pascal, GReD , BP 10448 , Clermont-Ferrand , France.,b CNRS, UMR6293, GReD , Clermont-Ferrand , France.,c Inserm, UMR1103, GReD , Clermont-Ferrand , France
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De Santis A, La Manna S, Krauss IR, Malfitano AM, Novellino E, Federici L, De Cola A, Di Matteo A, D'Errico G, Marasco D. Nucleophosmin-1 regions associated with acute myeloid leukemia interact differently with lipid membranes. Biochim Biophys Acta Gen Subj 2018; 1862:967-978. [PMID: 29330024 DOI: 10.1016/j.bbagen.2018.01.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 12/04/2017] [Accepted: 01/08/2018] [Indexed: 01/25/2023]
Affiliation(s)
- Augusta De Santis
- Department of Chemical Sciences, University of Naples "Federico II", Naples, Italy; CSGI - Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Florence, Italy
| | - Sara La Manna
- Department of Pharmacy, CIRPEB: Centro Interuniversitario di Ricerca sui Peptidi Bioattivi, University of Naples "Federico II", 80134, Naples, Italy
| | - Irene Russo Krauss
- Department of Chemical Sciences, University of Naples "Federico II", Naples, Italy; CSGI - Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Florence, Italy
| | - Anna Maria Malfitano
- Department of Pharmacy, CIRPEB: Centro Interuniversitario di Ricerca sui Peptidi Bioattivi, University of Naples "Federico II", 80134, Naples, Italy
| | - Ettore Novellino
- Department of Pharmacy, CIRPEB: Centro Interuniversitario di Ricerca sui Peptidi Bioattivi, University of Naples "Federico II", 80134, Naples, Italy
| | - Luca Federici
- Department of Medical, Oral and Biotechnological Sciences and CeSI-MeT, University of Chieti "G. d'Annunzio", Via dei Vestini 31, 66100 Chieti, Italy
| | - Antonella De Cola
- Department of Medical, Oral and Biotechnological Sciences and CeSI-MeT, University of Chieti "G. d'Annunzio", Via dei Vestini 31, 66100 Chieti, Italy
| | - Adele Di Matteo
- Institute of Molecular Biology and Pathology, CNR, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Gerardino D'Errico
- Department of Chemical Sciences, University of Naples "Federico II", Naples, Italy; CSGI - Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Florence, Italy
| | - Daniela Marasco
- Department of Pharmacy, CIRPEB: Centro Interuniversitario di Ricerca sui Peptidi Bioattivi, University of Naples "Federico II", 80134, Naples, Italy.
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Molecules that target nucleophosmin for cancer treatment: an update. Oncotarget 2018; 7:44821-44840. [PMID: 27058426 PMCID: PMC5190137 DOI: 10.18632/oncotarget.8599] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 03/28/2016] [Indexed: 11/25/2022] Open
Abstract
Nucleophosmin is a highly and ubiquitously expressed protein, mainly localized in nucleoli but able to shuttle between nucleus and cytoplasm. Nucleophosmin plays crucial roles in ribosome maturation and export, centrosome duplication, cell cycle progression, histone assembly and response to a variety of stress stimuli. Much interest in this protein has arisen in the past ten years, since the discovery of heterozygous mutations in the terminal exon of the NPM1 gene, which are the most frequent genetic alteration in acute myeloid leukemia. Nucleophosmin is also frequently overexpressed in solid tumours and, in many cases, its overexpression correlates with mitotic index and metastatization. Therefore it is considered as a promising target for the treatment of both haematologic and solid malignancies. NPM1 targeting molecules may suppress different functions of the protein, interfere with its subcellular localization, with its oligomerization properties or drive its degradation. In the recent years, several such molecules have been described and here we review what is currently known about them, their interaction with nucleophosmin and the mechanistic basis of their toxicity. Collectively, these molecules exemplify a number of different strategies that can be adopted to target nucleophosmin and we summarize them at the end of the review.
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