1
|
Xu C, Wang Y, Tu Q, Zhang Z, Chen M, Mwangi J, Li Y, Jin Y, Zhao X, Lai R. Targeting surface nucleolin induces autophagy-dependent cell death in pancreatic cancer via AMPK activation. Oncogene 2019; 38:1832-1844. [PMID: 30356139 DOI: 10.1038/s41388-018-0556-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 09/10/2018] [Accepted: 09/29/2018] [Indexed: 12/25/2022]
Abstract
Pancreatic cancer remains one of the deadliest human cancers despite current advances in conventional therapeutics including surgery and adjuvant therapies. Here, we showed that LZ1, a peptide derived from a snake venom cathelicidin, significantly inhibited growth of pancreatic cancer cells by inducing autophagy-dependent cell death both in vitro and in vivo. The LZ1-induced cell death was blocked by pharmacological or genetic inhibition of autophagy. In orthotopic model of pancreatic cancer, systemic administration of LZ1 (1-4 mg/kg) exhibited remarkable antitumor efficacy, significantly prolonged mice survival, and showed negligible adverse effects by comparison with gemcitabine (20 mg/kg). Mechanistic studies revealed that LZ1 acts through binding to nucleolin, whose expression on cell surface is frequently increased in pancreatic cancer cells. LZ1 binding triggers degradation of surface-expressed nucleolin. This leads to activation of 5'-AMP kinase which results in suppression of mTORC1 activity and induction of autophagic flux. These data suggest that LZ1, targeting nucleolin-AMPK-autophagy axis, is a promising lead for the development of therapeutic agents against pancreatic cancer.
Collapse
Affiliation(s)
- Cheng Xu
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, 650223, Yunnan, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, 650204, Yunnan, China
| | - Yunfei Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, 650223, Yunnan, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, 650204, Yunnan, China
| | - Qiu Tu
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, 650223, Yunnan, China
| | - Zhiye Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, 650223, Yunnan, China
| | - Mengrou Chen
- Life Sciences College of Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - James Mwangi
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, 650223, Yunnan, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, 650204, Yunnan, China
- Sino-African Joint Research Center, Chinese Academy of Sciences, Kunming Institute of Zoology, Kunming, 650223, Yunnan, China
| | - Yaxiong Li
- Department of Cardiovascular Surgery, Yan'an Affiliated Hospital of Kunming Medical University, Kunming, 650041, Yunnan, China
| | - Yang Jin
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway.
| | - Xudong Zhao
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, 650223, Yunnan, China.
| | - Ren Lai
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, 650223, Yunnan, China.
- Life Sciences College of Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China.
- Sino-African Joint Research Center, Chinese Academy of Sciences, Kunming Institute of Zoology, Kunming, 650223, Yunnan, China.
| |
Collapse
|
2
|
Jia W, Yao Z, Zhao J, Guan Q, Gao L. New perspectives of physiological and pathological functions of nucleolin (NCL). Life Sci 2017; 186:1-10. [PMID: 28751161 DOI: 10.1016/j.lfs.2017.07.025] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/21/2017] [Accepted: 07/23/2017] [Indexed: 12/13/2022]
Abstract
Nucleolin (NCL) is a multifunctional protein that mainly localized in the nucleolus, it is also found in the nucleoplasm, cytoplasm and cell membrane. The three main structural domains allow the interaction of NCL with different proteins and RNA sequences. Moreover, specific post-translational modifications and its shuttling property also contribute to its multifunctionality. NCL has been demonstrated to be involved in a variety of aspects such as ribosome biogenesis, chromatin organization and stability, DNA and RNA metabolism, cytokinesis, cell proliferation, angiogenesis, apoptosis regulation, stress response and microRNA processing. NCL has been increasingly implicated in several pathological processes, especially in tumorigenesis and viral infection, which makes NCL a potential target for the development of anti-tumor and anti-viral strategies. In this review, we present an overview on the structure, localizations and various functions of NCL, and further describe how the multiple functions of NCL are correlated to its multiple cellular distributions.
Collapse
Affiliation(s)
- Wenyu Jia
- Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Jinan, Shandong Province, PR China; Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong Province, PR China; Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong Province, PR China
| | - Zhenyu Yao
- Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Jinan, Shandong Province, PR China; Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong Province, PR China; Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong Province, PR China
| | - Jiajun Zhao
- Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Jinan, Shandong Province, PR China; Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong Province, PR China; Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong Province, PR China
| | - Qingbo Guan
- Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Jinan, Shandong Province, PR China; Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong Province, PR China; Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong Province, PR China
| | - Ling Gao
- Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Jinan, Shandong Province, PR China; Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong Province, PR China; Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong Province, PR China.
| |
Collapse
|
3
|
Bates PJ, Reyes-Reyes EM, Malik MT, Murphy EM, O'Toole MG, Trent JO. G-quadruplex oligonucleotide AS1411 as a cancer-targeting agent: Uses and mechanisms. Biochim Biophys Acta Gen Subj 2017; 1861:1414-1428. [PMID: 28007579 DOI: 10.1016/j.bbagen.2016.12.015] [Citation(s) in RCA: 195] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 12/16/2016] [Accepted: 12/17/2016] [Indexed: 02/08/2023]
Abstract
BACKGROUND AS1411 is a 26-mer G-rich DNA oligonucleotide that forms a variety of G-quadruplex structures. It was identified based on its cancer-selective antiproliferative activity and subsequently determined to be an aptamer to nucleolin, a multifunctional protein that preferentially binds quadruplex nucleic acids and which is present at high levels on the surface of cancer cells. AS1411 has exceptionally efficient cellular internalization compared to non-quadruplex DNA sequences. SCOPE OF REVIEW Recent developments related to AS1411 will be examined, with a focus on its use for targeted delivery of therapeutic and imaging agents. MAJOR CONCLUSIONS Numerous research groups have used AS1411 as a targeting agent to deliver nanoparticles, oligonucleotides, and small molecules into cancer cells. Studies in animal models have demonstrated that AS1411-linked materials can accumulate selectively in tumors following systemic administration. The mechanism underlying the cancer-targeting ability of AS1411 is not completely understood, but recent studies suggest a model that involves: (1) initial uptake by macropinocytosis, a form of endocytosis prevalent in cancer cells; (2) stimulation of macropinocytosis by a nucleolin-dependent mechanism resulting in further uptake; and (3) disruption of nucleolin-mediated trafficking and efflux leading to cargoes becoming trapped inside cancer cells. SIGNIFICANCE Human trials have indicated that AS1411 is safe and can induce durable remissions in a few patients, but new strategies are needed to maximize its clinical impact. A better understanding of the mechanisms by which AS1411 targets and kills cancer cells may hasten the development of promising technologies using AS1411-linked nanoparticles or conjugates for cancer-targeted therapy and imaging. This article is part of a Special Issue entitled "G-quadruplex" Guest Editor: Dr. Concetta Giancola and Dr. Daniela Montesarchio.
Collapse
Affiliation(s)
- Paula J Bates
- Department of Medicine, University of Louisville, USA; James Graham Brown Cancer Center, University of Louisville, USA.
| | | | - Mohammad T Malik
- Department of Medicine, University of Louisville, USA; James Graham Brown Cancer Center, University of Louisville, USA
| | - Emily M Murphy
- Department of Biomedical Engineering, University of Louisville, USA
| | - Martin G O'Toole
- Department of Biomedical Engineering, University of Louisville, USA
| | - John O Trent
- Department of Medicine, University of Louisville, USA; James Graham Brown Cancer Center, University of Louisville, USA
| |
Collapse
|
4
|
Su PY, Wang YF, Huang SW, Lo YC, Wang YH, Wu SR, Shieh DB, Chen SH, Wang JR, Lai MD, Chang CF. Cell surface nucleolin facilitates enterovirus 71 binding and infection. J Virol 2015; 89:4527-38. [PMID: 25673703 PMCID: PMC4442404 DOI: 10.1128/jvi.03498-14] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 01/28/2015] [Indexed: 02/08/2023] Open
Abstract
UNLABELLED Because the pathogenesis of enterovirus 71 (EV71) remains mostly ambiguous, identifying the factors that mediate viral binding and entry to host cells is indispensable to ultimately uncover the mechanisms that underlie virus infection and pathogenesis. Despite the identification of several receptors/attachment molecules for EV71, the binding, entry, and infection mechanisms of EV71 remain unclear. Herein, we employed glycoproteomic approaches to identify human nucleolin as a novel binding receptor for EV71. Glycoproteins purified by lectin chromatography from the membrane extraction of human cells were treated with sialidase, followed by immunoprecipitation with EV71 particles. Among the 16 proteins identified by tandem mass spectrometry analysis, cell surface nucleolin attracted our attention. We found that EV71 interacted directly with nucleolin via the VP1 capsid protein and that an antinucleolin antibody reduced the binding of EV71 to human cells. In addition, the knockdown of cell surface nucleolin decreased EV71 binding, infection, and production in human cells. Furthermore, the expression of human nucleolin on the cell surface of a mouse cell line increased EV71 binding and conferred EV71 infection and production in the cells. These results strongly indicate that human nucleolin can mediate EV71 binding to and infection of cells. Our findings also demonstrate that the use of glycoproteomic approaches is a reliable methodology to discover novel receptors for pathogens. IMPORTANCE Outbreaks of EV71 have been reported in Asia-Pacific countries and have caused thousands of deaths in young children during the last 2 decades. The discovery of new EV71-interacting molecules to understand the infection mechanism has become an emergent issue. Hence, this study uses glycoproteomic approaches to comprehensively investigate the EV71-interacting glycoproteins. Several EV71-interacting glycoproteins are identified, and the role of cell surface nucleolin in mediating the attachment and entry of EV71 is characterized and validated. Our findings not only indicate a novel target for uncovering the EV71 infection mechanism and anti-EV71 drug discovery but also provide a new strategy for virus receptor identification.
Collapse
Affiliation(s)
- Pei-Yi Su
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Taiwan, Republic of China Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Taiwan, Republic of China
| | - Ya-Fang Wang
- Center of Infectious Disease and Signaling Research, National Cheng Kung University, Taiwan, Republic of China
| | - Sheng-Wen Huang
- Center of Infectious Disease and Signaling Research, National Cheng Kung University, Taiwan, Republic of China
| | - Yu-Chih Lo
- Center of Infectious Disease and Signaling Research, National Cheng Kung University, Taiwan, Republic of China Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Taiwan, Republic of China
| | - Ya-Hui Wang
- Institute of Oral Medicine and Department of Stomatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Taiwan, Republic of China
| | - Shang-Rung Wu
- Institute of Oral Medicine and Department of Stomatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Taiwan, Republic of China
| | - Dar-Bin Shieh
- Institute of Oral Medicine and Department of Stomatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Taiwan, Republic of China Advanced Optoelectronic Technology Center and Center for Micro/Nano Science and Technology, National Cheng Kung University, Taiwan, Republic of China
| | - Shun-Hua Chen
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Taiwan, Republic of China Center of Infectious Disease and Signaling Research, National Cheng Kung University, Taiwan, Republic of China Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Taiwan, Republic of China
| | - Jen-Ren Wang
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Taiwan, Republic of China Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Taiwan, Republic of China Center of Infectious Disease and Signaling Research, National Cheng Kung University, Taiwan, Republic of China
| | - Ming-Der Lai
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Taiwan, Republic of China Center of Infectious Disease and Signaling Research, National Cheng Kung University, Taiwan, Republic of China Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Taiwan, Republic of China
| | - Chuan-Fa Chang
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Taiwan, Republic of China Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Taiwan, Republic of China Center of Infectious Disease and Signaling Research, National Cheng Kung University, Taiwan, Republic of China
| |
Collapse
|
5
|
Hovanessian AG, Soundaramourty C, El Khoury D, Nondier I, Svab J, Krust B. Surface expressed nucleolin is constantly induced in tumor cells to mediate calcium-dependent ligand internalization. PLoS One 2010; 5:e15787. [PMID: 21203423 PMCID: PMC3009748 DOI: 10.1371/journal.pone.0015787] [Citation(s) in RCA: 156] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Accepted: 11/24/2010] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Nucleolin is one of the major proteins of the nucleolus, but it is also expressed on the cell surface where is serves as a binding protein for variety of ligands implicated in tumorigenesis and angiogenesis. Emerging evidence suggests that the cell-surface expressed nucleolin is a strategic target for an effective and nontoxic cancer therapy. METHODOLOGY/PRINCIPAL FINDINGS By monitoring the expression of nucleolin mRNA, and by measuring the level of nucleolin protein recovered from the surface and nucleus of cells, here we show that the presence of nucleolin at the cell surface is dependent on the constant induction of nucleolin mRNA. Indeed, inhibitors of RNA transcription or translation block expression of surface nucleolin while no apparent effect is observed on the level of nucleolin in the nucleus. The estimated half-life of surface nucleolin is less than one hour, whereas that of nuclear nucleolin is more than 8 hours. Nucleolin mRNA induction is reduced markedly in normal fibroblasts that reach confluence, while it occurs continuously even in post-confluent epithelial tumor cells consistent with their capacity to proliferate without contact inhibition. Interestingly, cold and heat shock induce nucleolin mRNA concomitantly to enhanced mRNA expression of the heat shock protein 70, thus suggesting that surface nucleolin induction also occurs in response to an environmental insult. At the cell surface, one of the main functions of nucleolin is to shuttle specific extracellular ligands by an active transport mechanism, which we show here to be calcium dependent. CONCLUSION/SIGNIFICANCE Our results demonstrate that the expression of surface nucleolin is an early metabolic event coupled with tumor cell proliferation and stress response. The fact that surface nucleolin is constantly and abundantly expressed on the surface of tumor cells, makes them a preferential target for the inhibitory action of anticancer agents that target surface nucleolin.
Collapse
Affiliation(s)
- Ara G Hovanessian
- CNRS-Université Paris Descartes, Unité Régulation de la Transcription de Maladies Génétique, Paris, France.
| | | | | | | | | | | |
Collapse
|
6
|
El Khoury D, Destouches D, Lengagne R, Krust B, Hamma-Kourbali Y, Garcette M, Niro S, Kato M, Briand JP, Courty J, Hovanessian AG, Prévost-Blondel A. Targeting surface nucleolin with a multivalent pseudopeptide delays development of spontaneous melanoma in RET transgenic mice. BMC Cancer 2010; 10:325. [PMID: 20573279 PMCID: PMC2912263 DOI: 10.1186/1471-2407-10-325] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Accepted: 06/24/2010] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The importance of cell-surface nucleolin in cancer biology was recently highlighted by studies showing that ligands of nucleolin play critical role in tumorigenesis and angiogenesis. By using a specific antagonist that binds the C-terminal tail of nucleolin, the HB-19 pseudopeptide, we recently reported that HB-19 treatment markedly suppressed the progression of established human breast tumor cell xenografts in the athymic nude mice without apparent toxicity. METHODS The in vivo antitumoral action of HB-19 treatment was assessed on the spontaneous development of melanoma in the RET transgenic mouse model. Ten days old RET mice were treated with HB-19 in a prophylactic setting that extended 300 days. In parallel, the molecular basis for the action of HB-19 was investigated on a melanoma cell line (called TIII) derived from a cutaneous nodule of a RET mouse. RESULTS HB-19 treatment of RET mice caused a significant delay in the onset of cutaneous tumors, several-months delay in the incidence of large tumors, a lower frequency of cutaneous nodules, and a reduction of visceral metastatic nodules while displaying no toxicity to normal tissue. Moreover, microvessel density was significantly reduced in tumors recovered from HB-19 treated mice compared to corresponding controls. Studies on the melanoma-derived tumor cells demonstrated that HB-19 treatment of TIII cells could restore contact inhibition, impair anchorage-independent growth, and reduce their tumorigenic potential in mice. Moreover, HB-19 treatment caused selective down regulation of transcripts coding matrix metalloproteinase 2 and 9, and tumor necrosis factor-alpha in the TIII cells and in melanoma tumors of RET mice. CONCLUSIONS Although HB-19 treatment failed to prevent the development of spontaneous melanoma in the RET mice, it delayed for several months the onset and frequency of cutaneous tumors, and exerted a significant inhibitory effect on visceral metastasis. Consequently, HB-19 could provide a novel therapeutic agent by itself or as an adjuvant therapy in association with current therapeutic interventions on a virulent cancer like melanoma.
Collapse
Affiliation(s)
- Diala El Khoury
- UPR 2228 CNRS, Université Paris Descartes, 45 rue des Saints Pères, 75270 Paris Cedex 06, France
| | - Damien Destouches
- EAC 7149 CNRS, Université Paris-Est, 61 avenue du général de Gaulle, 94000 Créteil, France
| | - Renée Lengagne
- Institut Cochin, Université Paris Descartes, CNRS (UMR 8104), 27 rue du Faubourg Saint-Jacques, 75014 Paris, France
- INSERM U1016, Paris, France
| | - Bernard Krust
- UPR 2228 CNRS, Université Paris Descartes, 45 rue des Saints Pères, 75270 Paris Cedex 06, France
| | - Yamina Hamma-Kourbali
- EAC 7149 CNRS, Université Paris-Est, 61 avenue du général de Gaulle, 94000 Créteil, France
| | - Marylène Garcette
- Institut Cochin, Université Paris Descartes, CNRS (UMR 8104), 27 rue du Faubourg Saint-Jacques, 75014 Paris, France
- INSERM U1016, Paris, France
| | - Sandra Niro
- Institut Cochin, Université Paris Descartes, CNRS (UMR 8104), 27 rue du Faubourg Saint-Jacques, 75014 Paris, France
- INSERM U1016, Paris, France
| | - Masashi Kato
- Unit of Environmental Health Sciences, Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, 1200 Matsumoto-cho, Kasugai-shi, Aichi 487-8501, Japan
| | | | - José Courty
- EAC 7149 CNRS, Université Paris-Est, 61 avenue du général de Gaulle, 94000 Créteil, France
| | - Ara G Hovanessian
- UPR 2228 CNRS, Université Paris Descartes, 45 rue des Saints Pères, 75270 Paris Cedex 06, France
| | - Armelle Prévost-Blondel
- Institut Cochin, Université Paris Descartes, CNRS (UMR 8104), 27 rue du Faubourg Saint-Jacques, 75014 Paris, France
- INSERM U1016, Paris, France
- Armelle Prévost-Blondel, Institut Cochin, Département Immunologie/Hématologie, 27 rue du Faubourg Saint-Jacques, Paris, F-75014 France
| |
Collapse
|
7
|
Wang H, Straubinger RM, Aletta JM, Cao J, Duan X, Yu H, Qu J. Accurate localization and relative quantification of arginine methylation using nanoflow liquid chromatography coupled to electron transfer dissociation and orbitrap mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2009; 20:507-19. [PMID: 19110445 PMCID: PMC3351756 DOI: 10.1016/j.jasms.2008.11.008] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2008] [Revised: 11/12/2008] [Accepted: 11/13/2008] [Indexed: 05/21/2023]
Abstract
Protein arginine (Arg) methylation serves an important functional role in eucaryotic cells, and typically occurs in domains consisting of multiple Arg in close proximity. Localization of methylarginine (MA) within Arg-rich domains poses a challenge for mass spectrometry (MS)-based methods; the peptides are highly charged under electrospray ionization (ESI), which limits the number of sequence-informative products produced by collision induced dissociation (CID), and loss of the labile methylation moieties during CID precludes effective fragmentation of the peptide backbone. Here the fragmentation behavior of Arg-rich peptides was investigated comprehensively using electron-transfer dissociation (ETD) and CID for both methylated and unmodified glycine-/Arg-rich peptides (GAR), derived from residues 679-695 of human nucleolin, which contains methylation motifs that are widely-represented in biological systems. ETD produced abundant information for sequencing and MA localization, whereas CID failed to provide credible identification for any available charge state (z = 2-4). Nevertheless, CID produced characteristic neutral losses that can be employed to distinguish among different types of MA, as suggested by previous works and confirmed here with product ion scans of high accuracy/resolution by an LTQ/Orbitrap. To analyze MA-peptides in relatively complex mixtures, a method was developed that employs nano-LC coupled to alternating CID/ETD for peptide sequencing and MA localization/characterization, and an Orbitrap for accurate precursor measurement and relative quantification of MA-peptide stoichiometries. As proof of concept, GAR-peptides methylated in vitro by protein arginine N-methyltransferases PRMT1 and PRMT7 were analyzed. It was observed that PRMT1 generated a number of monomethylated (MMA) and asymmetric-dimethylated peptides, while PRMT7 produced predominantly MMA peptides and some symmetric-dimethylated peptides. This approach and the results may advance understanding of the actions of PRMTs and the functional significance of Arg methylation patterns.
Collapse
Affiliation(s)
- Hao Wang
- The Department of Pharmaceutical Sciences, University at Buffalo, State University of New York, Amherst, NY 14260-1200
- New York State Center of Excellence in Bioinformatics and Life Sciences, 701 Ellicott St, Buffalo, NY 14203
| | - Robert M. Straubinger
- The Department of Pharmaceutical Sciences, University at Buffalo, State University of New York, Amherst, NY 14260-1200
- New York State Center of Excellence in Bioinformatics and Life Sciences, 701 Ellicott St, Buffalo, NY 14203
| | - John M. Aletta
- New York State Center of Excellence in Bioinformatics and Life Sciences, 701 Ellicott St, Buffalo, NY 14203
- CH3 BioSystems LLC 1416 Sweet Home Road, Amherst, New York 14228-2784
| | - Jin Cao
- The Department of Pharmaceutical Sciences, University at Buffalo, State University of New York, Amherst, NY 14260-1200
| | - Xiaotao Duan
- The Department of Pharmaceutical Sciences, University at Buffalo, State University of New York, Amherst, NY 14260-1200
- New York State Center of Excellence in Bioinformatics and Life Sciences, 701 Ellicott St, Buffalo, NY 14203
| | - Haoying Yu
- The Department of Pharmaceutical Sciences, University at Buffalo, State University of New York, Amherst, NY 14260-1200
- New York State Center of Excellence in Bioinformatics and Life Sciences, 701 Ellicott St, Buffalo, NY 14203
| | - Jun Qu
- The Department of Pharmaceutical Sciences, University at Buffalo, State University of New York, Amherst, NY 14260-1200
- New York State Center of Excellence in Bioinformatics and Life Sciences, 701 Ellicott St, Buffalo, NY 14203
| |
Collapse
|
8
|
Losfeld ME, Khoury DE, Mariot P, Carpentier M, Krust B, Briand JP, Mazurier J, Hovanessian AG, Legrand D. The cell surface expressed nucleolin is a glycoprotein that triggers calcium entry into mammalian cells. Exp Cell Res 2009; 315:357-69. [PMID: 19026635 DOI: 10.1016/j.yexcr.2008.10.039] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2008] [Revised: 10/16/2008] [Accepted: 10/23/2008] [Indexed: 11/24/2022]
Abstract
Nucleolin is an ubiquitous nucleolar phosphoprotein involved in fundamental aspects of transcription regulation, cell proliferation and growth. It has also been described as a shuttling molecule between nucleus, cytosol and the cell surface. Several studies have demonstrated that surface nucleolin serves as a receptor for various extracellular ligands implicated in cell proliferation, differentiation, adhesion, mitogenesis and angiogenesis. Previously, we reported that nucleolin in the extranuclear cell compartment is a glycoprotein containing N- and O-glycans. In the present study, we show that glycosylation is an essential requirement for surface nucleolin expression, since it is prevented when cells are cultured in the presence of tunicamycin, an inhibitor of N-glycosylation. Accordingly, surface but not nuclear nucleolin is radioactively labeled upon metabolic labeling of cells with [(3)H]glucosamine. Besides its well-demonstrated role in the internalization of specific ligands, here we show that ligand binding to surface nucleolin could also induce Ca(2+) entry into cells. Indeed, by flow cytometry, microscopy and patch-clamp experiments, we show that the HB-19 pseudopeptide, which binds specifically surface nucleolin, triggers rapid and intense membrane Ca(2+) fluxes in various types of cells. The use of several drugs then indicated that Store-Operated Ca(2+) Entry (SOCE)-like channels are involved in the generation of these fluxes. Taken together, our findings suggest that binding of an extracellular ligand to surface nucleolin could be involved in the activation of signaling pathways by promoting Ca(2+) entry into cells.
Collapse
Affiliation(s)
- Marie-Estelle Losfeld
- Unité de Glycobiologie Structurale et Fonctionnelle, Unité Mixte de Recherche no 8576 du Centre National de la Recherche Scientifique, France
| | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Destouches D, El Khoury D, Hamma-Kourbali Y, Krust B, Albanese P, Katsoris P, Guichard G, Briand JP, Courty J, Hovanessian AG. Suppression of tumor growth and angiogenesis by a specific antagonist of the cell-surface expressed nucleolin. PLoS One 2008; 3:e2518. [PMID: 18560571 PMCID: PMC2424174 DOI: 10.1371/journal.pone.0002518] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2008] [Accepted: 05/20/2008] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Emerging evidences suggest that nucleolin expressed on the cell surface is implicated in growth of tumor cells and angiogenesis. Nucleolin is one of the major proteins of the nucleolus, but it is also expressed on the cell surface where is serves as a binding protein for variety of ligands implicated in cell proliferation, differentiation, adhesion, mitogenesis and angiogenesis. METHODOLOGY/PRINCIPAL FINDINGS By using a specific antagonist that binds the C-terminal tail of nucleolin, the HB-19 pseudopeptide, here we show that the growth of tumor cells and angiogenesis are suppressed in various in vitro and in vivo experimental models. HB-19 inhibited colony formation in soft agar of tumor cell lines, impaired migration of endothelial cells and formation of capillary-like structures in collagen gel, and reduced blood vessel branching in the chick embryo chorioallantoic membrane. In athymic nude mice, HB-19 treatment markedly suppressed the progression of established human breast tumor cell xenografts in nude mice, and in some cases eliminated measurable tumors while displaying no toxicity to normal tissue. This potent antitumoral effect is attributed to the direct inhibitory action of HB-19 on both tumor and endothelial cells by blocking and down regulating surface nucleolin, but without any apparent effect on nucleolar nucleolin. CONCLUSION/SIGNIFICANCE Our results illustrate the dual inhibitory action of HB-19 on the tumor development and the neovascularization process, thus validating the cell-surface expressed nucleolin as a strategic target for an effective cancer drug. Consequently, the HB-19 pseudopeptide provides a unique candidate to consider for innovative cancer therapy.
Collapse
Affiliation(s)
| | | | | | - Bernard Krust
- CNRS UPR 2228, Université Paris Descartes, Paris, France
| | | | | | - Gilles Guichard
- CNRS UPR 9021, Institut de Biologie Moléculaire et Cellulaire, Strasbourg, France
| | - Jean Paul Briand
- CNRS UPR 9021, Institut de Biologie Moléculaire et Cellulaire, Strasbourg, France
| | - José Courty
- CNRS UMR 7149, Université Paris-Est, Créteil, France
| | | |
Collapse
|
10
|
Nucleolin – Characteristics of Protein and its Role in Biology of Cancers and Viral Infections. ACTA ACUST UNITED AC 2008. [DOI: 10.2478/v10052-008-0003-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
11
|
Singh Y, Dolphin GT, Razkin J, Dumy P. Synthetic Peptide Templates for Molecular Recognition: Recent Advances and Applications. Chembiochem 2006; 7:1298-314. [PMID: 16892470 DOI: 10.1002/cbic.200600078] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The creation of molecular systems that can mimic some of the properties of natural macromolecules is one of the major endeavors in contemporary protein chemistry. However, the construction of artificial proteins with predetermined structure and function is difficult on account of complex folding pathways. The use of topological peptide templates has been suggested to induce and stabilize defined secondary and tertiary structures. This is because the recent advances in the chemistry of coupling reagents, protecting groups, and solid-phase synthesis have made the chemical synthesis of peptides with conformationally controlled and complex structures feasible. Besides their use as structure-inducing devices, these peptide templates can also be utilized to construct novel structures with tailor-made functions. Herein, we present recent advances in the field of peptide-template-based approaches with particular emphasis on the demonstrated utility of this approach in molecular recognition, along with related applications.
Collapse
Affiliation(s)
- Yashveer Singh
- LEDSS, UMR CNRS 5616, ICMG FR 2607, Universite Joseph Fourier, Grenoble Cedex 9, France
| | | | | | | |
Collapse
|
12
|
Nisole S, Said EA, Mische C, Prevost MC, Krust B, Bouvet P, Bianco A, Briand JP, Hovanessian AG. The anti-HIV pentameric pseudopeptide HB-19 binds the C-terminal end of nucleolin and prevents anchorage of virus particles in the plasma membrane of target cells. J Biol Chem 2002; 277:20877-86. [PMID: 11919179 DOI: 10.1074/jbc.m110024200] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The multivalent pseudopeptide HB-19 that binds the cell-surface-expressed nucleolin is a potent inhibitor of human immunodeficiency virus (HIV) infection by blocking virus particle attachment and thus anchorage in the plasma membrane. We show that cross-linking of surface-bound HB-19A (like HB-19 but with a modified template) results in aggregation of HB-19A with surface nucleolin. Consistent with its specific action, HB-19A binding to different types of cells reaches saturation at concentrations that have been reported to result in inhibition of HIV infection. By using Chinese hamster ovary mutant cell lines, we confirm that the binding of HB-19A to surface nucleolin is independent of heparan and chondroitin sulfate proteoglycans. In vitro generated full-length nucleolin was found to bind HB-19A, whereas the N-terminal part containing the acidic amino acid stretches of nucleolin did not. The use of various deletion constructs of the C-terminal part of nucleolin then permitted the identification of the extreme C-terminal end of nucleolin, containing repeats of the amino acid motif, RGG, as the domain that binds HB-19A. Finally, a synthetic peptide corresponding to the last C-terminal 63 amino acids was able to inhibit HIV infection at the stage of HIV attachment to cells, thus suggesting that this domain could be functional in the HIV anchorage process.
Collapse
Affiliation(s)
- Sébastien Nisole
- Unité de Virologie et Immunologie Cellulaire (URA 1930 CNRS), Plateau Technique, Institut Pasteur, 28 Rue du Dr. Roux, 75724 Paris Cedex 15, France
| | | | | | | | | | | | | | | | | |
Collapse
|