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Tolue Ghasaban F, Ghanei M, Mahmoudian RA, Taghehchian N, Abbaszadegan MR, Moghbeli M. MicroRNAs as the critical regulators of epithelial mesenchymal transition in pancreatic tumor cells. Heliyon 2024; 10:e30599. [PMID: 38726188 PMCID: PMC11079401 DOI: 10.1016/j.heliyon.2024.e30599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/26/2024] [Accepted: 04/30/2024] [Indexed: 05/12/2024] Open
Abstract
Pancreatic cancer (PC), as one of the main endocrine and digestive systems malignancies has the highest cancer related mortality in the world. Lack of the evident clinical symptoms and appropriate diagnostic markers in the early stages of tumor progression are the main reasons of the high mortality rate among PC patients. Therefore, it is necessary to investigate the molecular pathways involved in the PC progression, in order to introduce novel early diagnostic methods. Epithelial mesenchymal transition (EMT) is a critical cellular process associated with pancreatic tumor cells invasion and distant metastasis. MicroRNAs (miRNAs) are also important regulators of EMT process. In the present review, we discussed the role of miRNAs in regulation of EMT process during PC progression. It has been reported that the miRNAs mainly regulate the EMT process in pancreatic tumor cells through the regulation of EMT-specific transcription factors and several signaling pathways such as WNT, NOTCH, TGF-β, JAK/STAT, and PI3K/AKT. Considering the high stability of miRNAs in body fluids and their role in regulation of EMT process, they can be introduced as the non-invasive diagnostic markers in the early stages of malignant pancreatic tumors. This review paves the way to introduce a non-invasive EMT based panel marker for the early tumor detection among PC patients.
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Affiliation(s)
- Faezeh Tolue Ghasaban
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Ghanei
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reihaneh Alsadat Mahmoudian
- Basic Sciences Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Cancer Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Negin Taghehchian
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Meysam Moghbeli
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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2
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Pergu R, Shoba VM, Chaudhary SK, Munkanatta Godage DNP, Deb A, Singha S, Dhawa U, Singh P, Anokhina V, Singh S, Siriwardena SU, Choudhary A. Development and Applications of Chimera Platforms for Tyrosine Phosphorylation. ACS CENTRAL SCIENCE 2023; 9:1558-1566. [PMID: 37637727 PMCID: PMC10450875 DOI: 10.1021/acscentsci.3c00200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Indexed: 08/29/2023]
Abstract
Chimeric small molecules that induce post-translational modification (PTM) on a target protein by bringing it into proximity to a PTM-inducing enzyme are furnishing novel modalities to perturb protein function. Despite recent advances, such molecules are unavailable for a critical PTM, tyrosine phosphorylation. Furthermore, the contemporary design paradigm of chimeric molecules, formed by joining a noninhibitory binder of the PTM-inducing enzyme with the binder of the target protein, prohibits the recruitment of most PTM-inducing enzymes as their noninhibitory binders are unavailable. Here, we report two platforms to generate phosphorylation-inducing chimeric small molecules (PHICS) for tyrosine phosphorylation. We generate PHICS from both noninhibitory binders (scantily available, platform 1) and kinase inhibitors (abundantly available, platform 2) using cysteine-based group transfer chemistry. PHICS triggered phosphorylation on tyrosine residues in diverse sequence contexts and target proteins (e.g., membrane-associated, cytosolic) and displayed multiple bioactivities, including the initiation of a growth receptor signaling cascade and the death of drug-resistant cancer cells. These studies provide an approach to induce biologically relevant PTM and lay the foundation for pharmacologic PTM editing (i.e., induction or removal) of target proteins using abundantly available inhibitors of PTM-inducing or -erasing enzymes.
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Affiliation(s)
- Rajaiah Pergu
- Chemical
Biology and Therapeutics Science, Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Veronika M. Shoba
- Chemical
Biology and Therapeutics Science, Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Santosh K. Chaudhary
- Chemical
Biology and Therapeutics Science, Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | | | - Arghya Deb
- Chemical
Biology and Therapeutics Science, Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Santanu Singha
- Chemical
Biology and Therapeutics Science, Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Uttam Dhawa
- Chemical
Biology and Therapeutics Science, Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Prashant Singh
- Chemical
Biology and Therapeutics Science, Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Viktoriya Anokhina
- Chemical
Biology and Therapeutics Science, Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Sameek Singh
- Chemical
Biology and Therapeutics Science, Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Sachini U. Siriwardena
- Chemical
Biology and Therapeutics Science, Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Amit Choudhary
- Chemical
Biology and Therapeutics Science, Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
- Department
of Medicine, Harvard Medical School, Boston, Massachusetts 02115, United States
- Divisions
of Renal Medicine and Engineering, Brigham
and Women’s Hospital, Boston, Massachusetts 02115, United States
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3
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Sarmah D, Meredith WO, Weber IK, Price MR, Birtwistle MR. Predicting anti-cancer drug combination responses with a temporal cell state network model. PLoS Comput Biol 2023; 19:e1011082. [PMID: 37126527 PMCID: PMC10174488 DOI: 10.1371/journal.pcbi.1011082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 05/11/2023] [Accepted: 04/06/2023] [Indexed: 05/02/2023] Open
Abstract
Cancer chemotherapy combines multiple drugs, but predicting the effects of drug combinations on cancer cell proliferation remains challenging, even for simple in vitro systems. We hypothesized that by combining knowledge of single drug dose responses and cell state transition network dynamics, we could predict how a population of cancer cells will respond to drug combinations. We tested this hypothesis here using three targeted inhibitors of different cell cycle states in two different cell lines in vitro. We formulated a Markov model to capture temporal cell state transitions between different cell cycle phases, with single drug data constraining how drug doses affect transition rates. This model was able to predict the landscape of all three different pairwise drug combinations across all dose ranges for both cell lines with no additional data. While further application to different cell lines, more drugs, additional cell state networks, and more complex co-culture or in vivo systems remain, this work demonstrates how currently available or attainable information could be sufficient for prediction of drug combination response for single cell lines in vitro.
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Affiliation(s)
- Deepraj Sarmah
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina, United States of America
| | - Wesley O. Meredith
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina, United States of America
| | - Ian K. Weber
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina, United States of America
- The University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Madison R. Price
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina, United States of America
- College of Pharmacy, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Marc R. Birtwistle
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina, United States of America
- Department of Bioengineering, Clemson University, Clemson, South Carolina, United States of America
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4
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Wu F, He J, Deng Q, Chen J, Peng M, Xiao J, Zeng Y, Yi L, Li Z, Tian R, Jiang Z. Neuroglobin inhibits pancreatic cancer proliferation and metastasis by targeting the GNAI1/EGFR/AKT/ERK signaling axis. Biochem Biophys Res Commun 2023; 664:108-116. [PMID: 37141638 DOI: 10.1016/j.bbrc.2023.04.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/11/2023] [Accepted: 04/23/2023] [Indexed: 05/06/2023]
Abstract
Pancreatic cancer is an extremely aggressive malignancy with a very disappointing prognosis. Neuroglobin (NGB), a member of the globin family, has been demonstrated to have a significant role in a variety of tumor forms. The possible role of NGB as a tumor suppressor gene in pancreatic cancer was investigated in this work. Information from the public dataset TCGA combined with GTEx was used to analyze the finding that NGB was commonly downregulated in pancreatic cancer cell lines and tissues, correlating with patient age and prognosis. The expression of NGB in pancreatic cancer was investigated via RT-PCR, qRT-PCR, and Western blot experiments. In-vitro and in-vivo assays, NGB elicited cell cycle arrest in the S phase and apoptosis, hindered migration and invasion, reversed the EMT process, and suppressed cell proliferation and development. The mechanism of action of NGB was predicted via bioinformatics analysis and validated using Western blot and co-IP experiments revealed that NGB inhibited the EGFR/AKT/ERK pathway by binding to and reducing expression of GNAI1 and p-EGFR. In addition, pancreatic cancer cells overexpressing NGB showed increased drug sensitivity to gefitinib (EGFR-TKI). In conclusion, NGB inhibits pancreatic cancer progression by specifically targeting the GNAI1/EGFR/AKT/ERK signaling axis.
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Affiliation(s)
- Fan Wu
- Department of Gastroenterology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Jin He
- Department of Gastroenterology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Qianxi Deng
- Department of Gastroenterology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Jun Chen
- Department of Gastroenterology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Mingyu Peng
- Department of Respiratory & Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Jiayi Xiao
- West China School of Medicine and West China Hospital, Sichuan University, #37 Guoxue Alley, Wuhou District, Chengdu, Sichuan Province, PR China
| | - Yiwei Zeng
- CHINA MEDICAL UNIVERSITY, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China
| | - Lin Yi
- CHONGQING MEDICAL UNIVERSITY, 1 Yixueyuan Road, Yuzhong District, Chongqing, 400016, PR China
| | - Zhuoqing Li
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Rui Tian
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Zheng Jiang
- Department of Gastroenterology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
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Noguchi R, Yoshimura A, Uchino J, Takeda T, Chihara Y, Ota T, Hiranuma O, Gyotoku H, Takayama K, Kondo T. Comprehensive Kinase Activity Profiling Revealed the Kinase Activity Patterns Associated with the Effects of EGFR Tyrosine Kinase Inhibitor Therapy in Advanced Non-Small-Cell Lung Cancer Patients with Sensitizing EGFR Mutations. Proteomes 2023; 11:proteomes11010006. [PMID: 36810562 PMCID: PMC9944465 DOI: 10.3390/proteomes11010006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/11/2023] [Accepted: 01/26/2023] [Indexed: 02/08/2023] Open
Abstract
EGFR mutations are strong predictive markers for EGFR tyrosine kinase inhibitor (EGFR-TKI) therapy in patients with non-small-cell lung cancer (NSCLC). Although NSCLC patients with sensitizing EGFR mutations have better prognoses, some patients exhibit worse prognoses. We hypothesized that various activities of kinases could be potential predictive biomarkers for EGFR-TKI treatment among NSCLC patients with sensitizing EGFR mutations. In 18 patients with stage IV NSCLC, EGFR mutations were detected and comprehensive kinase activity profiling was performed using the peptide array PamStation12 for 100 tyrosine kinases. Prognoses were observed prospectively after the administration of EGFR-TKIs. Finally, the kinase profiles were analyzed in combination with the prognoses of the patients. Comprehensive kinase activity analysis identified specific kinase features, consisting of 102 peptides and 35 kinases, in NSCLC patients with sensitizing EGFR mutations. Network analysis revealed seven highly phosphorylated kinases: CTNNB1, CRK, EGFR, ERBB2, PIK3R1, PLCG1, and PTPN11. Pathway analysis and Reactome analysis revealed that the PI3K-AKT and RAF/ MAPK pathways were significantly enriched in the poor prognosis group, being consistent with the outcome of the network analysis. Patients with poor prognoses exhibited high activation of EGFR, PIK3R1, and ERBB2. Comprehensive kinase activity profiles may provide predictive biomarker candidates for screening patients with advanced NSCLC harboring sensitizing EGFR mutations.
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Affiliation(s)
- Rei Noguchi
- Division of Rare Cancer Research, National Cancer Center Research Institute, Tokyo 104-0045, Japan
| | - Akihiro Yoshimura
- Department of Pulmonary Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Junji Uchino
- Department of Pulmonary Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
- Bannan Central Hospital, Shizuoka 438-0814, Japan
| | - Takayuki Takeda
- Department of Respiratory Medicine, Japanese Red Cross Kyoto Daini Hospital, Kyoto 602-8026, Japan
| | - Yusuke Chihara
- Department of Respiratory Medicine, Uji-Tokushukai Medical Center, Kyoto 611-0041, Japan
| | - Takayo Ota
- Department of Medical Oncology, Izumi City General Hospital, Osaka 594-0073, Japan
| | - Osamu Hiranuma
- Department of Respiratory Medicine, Otsu City Hospital, Shiga 520-0804, Japan
| | - Hiroshi Gyotoku
- Department of Respiratory Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8501, Japan
| | - Koichi Takayama
- Department of Pulmonary Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Tadashi Kondo
- Division of Rare Cancer Research, National Cancer Center Research Institute, Tokyo 104-0045, Japan
- Correspondence: ; Tel.: +81-3-3542-2511 (ext. 3419)
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6
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An oncogene addiction phosphorylation signature and its derived scores inform tumor responsiveness to targeted therapies. Cell Mol Life Sci 2022; 80:6. [PMID: 36494469 PMCID: PMC9734221 DOI: 10.1007/s00018-022-04634-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 11/08/2022] [Accepted: 11/14/2022] [Indexed: 12/13/2022]
Abstract
PURPOSE Oncogene addiction provides important therapeutic opportunities for precision oncology treatment strategies. To date the cellular circuitries associated with driving oncoproteins, which eventually establish the phenotypic manifestation of oncogene addiction, remain largely unexplored. Data suggest the DNA damage response (DDR) as a central signaling network that intersects with pathways associated with deregulated addicting oncoproteins with kinase activity in cancer cells. EXPERIMENTAL DESIGN: We employed a targeted mass spectrometry approach to systematically explore alterations in 116 phosphosites related to oncogene signaling and its intersection with the DDR following inhibition of the addicting oncogene alone or in combination with irradiation in MET-, EGFR-, ALK- or BRAF (V600)-positive cancer models. An NSCLC tissue pipeline combining patient-derived xenografts (PDXs) and ex vivo patient organotypic cultures has been established for treatment responsiveness assessment. RESULTS We identified an 'oncogene addiction phosphorylation signature' (OAPS) consisting of 8 protein phosphorylations (ACLY S455, IF4B S422, IF4G1 S1231, LIMA1 S490, MYCN S62, NCBP1 S22, P3C2A S259 and TERF2 S365) that are significantly suppressed upon targeted oncogene inhibition solely in addicted cell line models and patient tissues. We show that the OAPS is present in patient tissues and the OAPS-derived score strongly correlates with the ex vivo responses to targeted treatments. CONCLUSIONS We propose a score derived from OAPS as a quantitative measure to evaluate oncogene addiction of cancer cell samples. This work underlines the importance of protein phosphorylation assessment for patient stratification in precision oncology and corresponding identification of tumor subtypes sensitive to inhibition of a particular oncogene.
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Rocca A, Kholodenko BN. Can Systems Biology Advance Clinical Precision Oncology? Cancers (Basel) 2021; 13:6312. [PMID: 34944932 PMCID: PMC8699328 DOI: 10.3390/cancers13246312] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 12/10/2021] [Indexed: 12/13/2022] Open
Abstract
Precision oncology is perceived as a way forward to treat individual cancer patients. However, knowing particular cancer mutations is not enough for optimal therapeutic treatment, because cancer genotype-phenotype relationships are nonlinear and dynamic. Systems biology studies the biological processes at the systems' level, using an array of techniques, ranging from statistical methods to network reconstruction and analysis, to mathematical modeling. Its goal is to reconstruct the complex and often counterintuitive dynamic behavior of biological systems and quantitatively predict their responses to environmental perturbations. In this paper, we review the impact of systems biology on precision oncology. We show examples of how the analysis of signal transduction networks allows to dissect resistance to targeted therapies and inform the choice of combinations of targeted drugs based on tumor molecular alterations. Patient-specific biomarkers based on dynamical models of signaling networks can have a greater prognostic value than conventional biomarkers. These examples support systems biology models as valuable tools to advance clinical and translational oncological research.
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Affiliation(s)
- Andrea Rocca
- Hygiene and Public Health, Local Health Unit of Romagna, 47121 Forlì, Italy
| | - Boris N. Kholodenko
- Systems Biology Ireland, School of Medicine, University College Dublin, Belfield, D04 V1W8 Dublin, Ireland
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, D04 V1W8 Dublin, Ireland
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA
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8
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Anwar S, Khan S, Anjum F, Shamsi A, Khan P, Fatima H, Shafie A, Islam A, Hassan MI. Myricetin inhibits breast and lung cancer cells proliferation via inhibiting MARK4. J Cell Biochem 2021; 123:359-374. [PMID: 34751461 DOI: 10.1002/jcb.30176] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 10/09/2021] [Accepted: 10/27/2021] [Indexed: 12/13/2022]
Abstract
Identifying novel molecules as potential kinase inhibitors are gaining significant attention globally. The present study suggests Myricetin as a potential inhibitor of microtubule-affinity regulating kinase (MARK4), adding another molecule to the existing list of anticancer therapeutics. MARK4 regulates initial cell division steps and is a potent druggable target for various cancers. Structure-based docking with 100 ns molecular dynamics simulation depicted activity of Myricetin in the active site pocket of MARK4 and the formation of a stable complex. The fluorescence-based assay showed excellent affinity of Myricetin to MARK4 guided by static and dynamic quenching. Moreover, the assessment of enthalpy change (∆H) and entropy change (∆S) delineated electrostatic interactions as a dominant force in the MARK4-myricetin interaction. Isothermal titration calorimetric measurements revealed spontaneous binding of Myricetin with MARK4. Further, the kinase assay depicted significant inhibition of MARK4 by Myricetin with IC50 = 3.11 µM. Additionally, cell proliferation studies established that Myricetin significantly inhibited the cancer cells (MCF-7 and A549) proliferation, and inducing apoptosis. This study provides a solid rationale for developing Myricetin as a promising anticancer molecule in the MARK4 mediated malignancies.
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Affiliation(s)
- Saleha Anwar
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Shama Khan
- Drug Discovery and Development Centre (H3D), University of Cape Town, Rondebosch, South Africa
| | - Farah Anjum
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Anas Shamsi
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Parvez Khan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Hera Fatima
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Alaa Shafie
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Asimul Islam
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Md Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
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9
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Akimov V, Fehling-Kaschek M, Barrio-Hernandez I, Puglia M, Bunkenborg J, Nielsen MM, Timmer J, Dengjel J, Blagoev B. Magnitude of Ubiquitination Determines the Fate of Epidermal Growth Factor Receptor Upon Ligand Stimulation. J Mol Biol 2021; 433:167240. [PMID: 34508725 DOI: 10.1016/j.jmb.2021.167240] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 08/17/2021] [Accepted: 09/01/2021] [Indexed: 12/23/2022]
Abstract
Receptor tyrosine kinases (RTK) bind growth factors and are critical for cell proliferation and differentiation. Their dysregulation leads to a loss of growth control, often resulting in cancer. Epidermal growth factor receptor (EGFR) is the prototypic RTK and can bind several ligands exhibiting distinct mitogenic potentials. Whereas the phosphorylation on individual EGFR sites and their roles for downstream signaling have been extensively studied, less is known about ligand-specific ubiquitination events on EGFR, which are crucial for signal attenuation and termination. We used a proteomics-based workflow for absolute quantitation combined with mathematical modeling to unveil potentially decisive ubiquitination events on EGFR from the first 30 seconds to 15 minutes of stimulation. Four ligands were used for stimulation: epidermal growth factor (EGF), heparin-binding-EGF like growth factor, transforming growth factor-α and epiregulin. Whereas only little differences in the order of individual ubiquitination sites were observed, the overall amount of modified receptor differed depending on the used ligand, indicating that absolute magnitude of EGFR ubiquitination, and not distinctly regulated ubiquitination sites, is a major determinant for signal attenuation and the subsequent cellular outcomes.
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Affiliation(s)
- Vyacheslav Akimov
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Mirjam Fehling-Kaschek
- Institut of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Inigo Barrio-Hernandez
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Michele Puglia
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Jakob Bunkenborg
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Mogens M Nielsen
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Jens Timmer
- Institut of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany; Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Schänzlestr. 18, 79104 Freiburg, Germany
| | - Jörn Dengjel
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700 Fribourg, Switzerland.
| | - Blagoy Blagoev
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
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10
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Kasahara K, Inagaki M. Primary ciliary signaling: links with the cell cycle. Trends Cell Biol 2021; 31:954-964. [PMID: 34420822 DOI: 10.1016/j.tcb.2021.07.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 02/07/2023]
Abstract
Primary cilia are solitary, microtubule-based structures emanating from the surface of most vertebrate cells. Although it is understood that ciliary assembly and disassembly both depend upon and impact cell cycle progression, critical mechanistic details of these links remain unresolved. Accumulating evidence shows that the signaling pathways downstream of receptor tyrosine kinases and lysophosphatidic acid receptors control the dynamics of primary cilia. It has also become clear that primary cilia not only serve as signaling hubs but also regulate the composition of the surrounding membrane, which is likely to affect the response to growth factors. Here, we overview recent advances in understanding the interplay between primary cilia and the cell cycle, with a focus on growth factor signaling pathways.
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Affiliation(s)
- Kousuke Kasahara
- Department of Physiology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Masaki Inagaki
- Department of Physiology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan.
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11
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Jha N, Mangukia N, Patel MP, Bhavsar M, Gadhavi H, Rawal RM, Patel SK. Exploring the MiRnome of Carica papaya: A cross kingdom approach. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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12
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A tri-functional amino acid enables mapping of binding sites for posttranslational-modification-mediated protein-protein interactions. Mol Cell 2021; 81:2669-2681.e9. [PMID: 33894155 DOI: 10.1016/j.molcel.2021.04.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 03/01/2021] [Accepted: 03/31/2021] [Indexed: 12/16/2022]
Abstract
Posttranslational modification (PTM), through the recruitment of effector proteins (i.e., "readers") that signal downstream events, plays key roles in regulating a variety of cellular processes. To understand how a PTM is recognized, it is necessary to find its readers and, importantly, the location of the binding pockets responsible for PTM recognition. Although various methods have been developed to identify PTM readers, it remains a challenge to directly map the PTM-binding regions, especially for intrinsically disordered domains. Here, we demonstrate a photo-crosslinkable, clickable, and cleavable tri-functional amino acid, ADdis-Cys, that when coupled with mass spectrometry (ADdis-Cys-MS) can not only identify PTM readers from complex proteomes but also simultaneously map their PTM-recognition modules. Using ADdis-Cys-MS, we successfully identify the binding sites of several reader-PTM interactions, among which we discover human C1QBP as a histone chaperone. This robust method should find wide applications in examining other histone or non-histone PTM-mediated protein-protein interactions.
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13
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Chen L, Zhang Y, Shu X, Chen Q, Wei T, Wang H, Wang X, Wu Q, Zhang X, Liu X, Zheng S, Huang L, Xiao J, Jiang C, Yang B, Wang Z, Guo X. Proteasome regulation by reversible tyrosine phosphorylation at the membrane. Oncogene 2021; 40:1942-1956. [PMID: 33603165 PMCID: PMC7990385 DOI: 10.1038/s41388-021-01674-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 12/21/2020] [Accepted: 01/21/2021] [Indexed: 01/30/2023]
Abstract
Reversible phosphorylation has emerged as an important mechanism for regulating 26S proteasome function in health and disease. Over 100 phospho-tyrosine sites of the human proteasome have been detected, and yet their function and regulation remain poorly understood. Here we show that the 19S subunit Rpt2 is phosphorylated at Tyr439, a strictly conserved residue within the C-terminal HbYX motif of Rpt2 that is essential for 26S proteasome assembly. Unexpectedly, we found that Y439 phosphorylation depends on Rpt2 membrane localization mediated by its N-myristoylation. Multiple receptors tyrosine kinases can trigger Rpt2-Y439 phosphorylation by activating Src, a N-myristoylated tyrosine kinase. Src directly phosphorylates Rpt2-Y439 in vitro and negatively regulates 26S proteasome activity at cellular membranes, which can be reversed by the membrane-associated isoform of protein tyrosine phosphatase nonreceptor type 2 (PTPN2). In H1975 lung cancer cells with activated Src, blocking Rpt2-Y439 phosphorylation by the Y439F mutation conferred partial resistance to the Src inhibitor saracatinib both in vitro and in a mouse xenograft tumor model, and caused significant changes of cellular responses to saracatinib at the proteome level. Our study has defined a novel mechanism involved in the spatial regulation of proteasome function and provided new insights into tyrosine kinase inhibitor-based anticancer therapies.
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Affiliation(s)
- Lu Chen
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Yanan Zhang
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Xin Shu
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Qiong Chen
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Tiantian Wei
- Academy for Advanced Interdisciplinary Studies, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Heman Wang
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Xiaorong Wang
- Departments of Physiology and Biophysics and of Developmental and Cell Biology, University of California, Irvine, CA, USA
| | - Qirou Wu
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Xiaomei Zhang
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Xiaoyan Liu
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Suya Zheng
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Lan Huang
- Departments of Physiology and Biophysics and of Developmental and Cell Biology, University of California, Irvine, CA, USA
| | - Junyu Xiao
- Academy for Advanced Interdisciplinary Studies, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Chao Jiang
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Bing Yang
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Zhiping Wang
- Center for Neuroscience and Department of Neurology of Second Affiliated Hospital, NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University School of Medicine, Hangzhou, China.
| | - Xing Guo
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China.
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14
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Barysch SV, Stankovic-Valentin N, Miedema T, Karaca S, Doppel J, Nait Achour T, Vasudeva A, Wolf L, Sticht C, Urlaub H, Melchior F. Transient deSUMOylation of IRF2BP proteins controls early transcription in EGFR signaling. EMBO Rep 2021; 22:e49651. [PMID: 33480129 PMCID: PMC7926235 DOI: 10.15252/embr.201949651] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/16/2020] [Accepted: 12/21/2020] [Indexed: 12/30/2022] Open
Abstract
Molecular switches are essential modules in signaling networks and transcriptional reprogramming. Here, we describe a role for small ubiquitin‐related modifier SUMO as a molecular switch in epidermal growth factor receptor (EGFR) signaling. Using quantitative mass spectrometry, we compare the endogenous SUMO proteomes of HeLa cells before and after EGF stimulation. Thereby, we identify a small group of transcriptional coregulators including IRF2BP1, IRF2BP2, and IRF2BPL as novel players in EGFR signaling. Comparison of cells expressing wild type or SUMOylation‐deficient IRF2BP1 indicates that transient deSUMOylation of IRF2BP proteins is important for appropriate expression of immediate early genes including dual specificity phosphatase 1 (DUSP1, MKP‐1) and the transcription factor ATF3. We find that IRF2BP1 is a repressor, whose transient deSUMOylation on the DUSP1 promoter allows—and whose timely reSUMOylation restricts—DUSP1 transcription. Our work thus provides a paradigm how comparative SUMO proteome analyses serve to reveal novel regulators in signal transduction and transcription.
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Affiliation(s)
- Sina V Barysch
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), Heidelberg University, Heidelberg, Germany
| | - Nicolas Stankovic-Valentin
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), Heidelberg University, Heidelberg, Germany
| | - Tim Miedema
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), Heidelberg University, Heidelberg, Germany
| | - Samir Karaca
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Judith Doppel
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), Heidelberg University, Heidelberg, Germany
| | - Thiziri Nait Achour
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), Heidelberg University, Heidelberg, Germany
| | - Aarushi Vasudeva
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), Heidelberg University, Heidelberg, Germany
| | - Lucie Wolf
- German Cancer Research Center (DKFZ), Division of Signalling and Functional Genomics, Heidelberg, Germany.,BioQuant & Department for Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Carsten Sticht
- Center of Medical Research, Bioinformatic and Statistic, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Henning Urlaub
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,Department of Clinical Chemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Frauke Melchior
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), Heidelberg University, Heidelberg, Germany
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15
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Xia Q, Xu M, Zhang P, Liu L, Meng X, Dong L. Therapeutic Potential of Autophagy in Glioblastoma Treatment With Phosphoinositide 3-Kinase/Protein Kinase B/Mammalian Target of Rapamycin Signaling Pathway Inhibitors. Front Oncol 2020; 10:572904. [PMID: 33123479 PMCID: PMC7567033 DOI: 10.3389/fonc.2020.572904] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 08/20/2020] [Indexed: 12/13/2022] Open
Abstract
Glioblastoma (GB) is the most malignant and aggressive form of brain tumor, characterized by frequent hyperactivation of the phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT)/mammalian target of rapamycin (mTOR) signaling pathway. PI3K/AKT/mTOR inhibitors have a promising clinical efficacy theoretically. However, strong drug resistance is developed in GB against the PI3K/AKT/mTOR inhibitors due to the cytoprotective effect and the adaptive response of autophagy during the treatment of GB. Activation of autophagy by the PI3K/AKT/mTOR inhibitors not only enhances treatment sensitivity but also leads to cell survival when drug resistance develops in cancer cells. In this review, we analyze how to increase the antitumor effect of the PI3K/AKT/mTOR inhibitors in GB treatment, which is achieved by various mechanisms, among which targeting autophagy is an important mechanism. We review the dual role of autophagy in both GB therapy and resistance against inhibitors of the PI3K/AKT/mTOR signaling pathway, and further discuss the possibility of using combinations of autophagy and PI3K/AKT/mTOR inhibitors to improve the treatment efficacy for GB. Finally, we provide new perspectives for targeting autophagy in GB therapy.
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Affiliation(s)
- Qin Xia
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Mengchuan Xu
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Pei Zhang
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Liqun Liu
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Xinyi Meng
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Lei Dong
- School of Life Science, Beijing Institute of Technology, Beijing, China
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16
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Ping L, Kundinger SR, Duong DM, Yin L, Gearing M, Lah JJ, Levey AI, Seyfried NT. Global quantitative analysis of the human brain proteome and phosphoproteome in Alzheimer's disease. Sci Data 2020; 7:315. [PMID: 32985496 PMCID: PMC7522715 DOI: 10.1038/s41597-020-00650-8] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 08/18/2020] [Indexed: 12/27/2022] Open
Abstract
Alzheimer's disease (AD) is characterized by an early, asymptomatic phase (AsymAD) in which individuals exhibit amyloid-beta (Aβ) plaque accumulation in the absence of clinically detectable cognitive decline. Here we report an unbiased multiplex quantitative proteomic and phosphoproteomic analysis using tandem mass tag (TMT) isobaric labeling of human post-mortem cortex (n = 27) across pathology-free controls, AsymAD and symptomatic AD individuals. With off-line high-pH fractionation and liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) on an Orbitrap Lumos mass spectrometer, we identified 11,378 protein groups across three TMT 11-plex batches. Immobilized metal affinity chromatography (IMAC) was used to enrich for phosphopeptides from the same TMT-labeled cases and 51,736 phosphopeptides were identified. Of these, 48,992 were quantified by TMT reporter ions representing 33,652 unique phosphosites. Two reference standards in each TMT 11-plex were included to assess intra- and inter-batch variance at the protein and peptide level. This comprehensive human brain proteome and phosphoproteome dataset will serve as a valuable resource for the identification of biochemical, cellular and signaling pathways altered during AD progression.
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Affiliation(s)
- Lingyan Ping
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
- Center for Neurodegenerative Diseases, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
| | - Sean R Kundinger
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
- Center for Neurodegenerative Diseases, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
| | - Duc M Duong
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
- Center for Neurodegenerative Diseases, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
| | - Luming Yin
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
- Center for Neurodegenerative Diseases, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
| | - Marla Gearing
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
- Center for Neurodegenerative Diseases, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
| | - James J Lah
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
- Center for Neurodegenerative Diseases, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
| | - Allan I Levey
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
- Center for Neurodegenerative Diseases, Emory University School of Medicine, Atlanta, GA, 30322, Georgia
| | - Nicholas T Seyfried
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, 30322, Georgia.
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, 30322, Georgia.
- Center for Neurodegenerative Diseases, Emory University School of Medicine, Atlanta, GA, 30322, Georgia.
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17
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Zhang J, Sun G, Mei X. Elevated FAM83A expression predicts poorer clincal outcome in lung adenocarcinoma. Cancer Biomark 2020; 26:367-373. [PMID: 31594212 DOI: 10.3233/cbm-190520] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Family with sequence similarity 83 member A (FAM83A) can promote tumor cell proliferation and facilitate epidermal growth factor tyrosine kinase inhibitor resistance in some malignant tumors, but its role in lung cancer has not been directly explored. OBJECTIVE We investigated FAM83A expression in lung adenocarcinoma (LUAD) and its significance in clinicopathologic characteristics and prognosis of the disease. PATIENTS AND METHODS We analyzed the mRNA expression of FAM83A in LUAD and normal (or adjacent) lung tissues from Oncomine database firstly. Then, we detected FAM83A protein expression in five paired fresh LUAD and adjacent lung tissue specimens from patients in our hospital by Western blotting. In addtion, FAM83A expression in 86 paraffin-embedded archived LUAD samples was evaluated by Immunohistochemistry, and the correlations between FAM83A expression and clinicopathologic characteristics and prognosis of the patients were analyzed. RESULTS Oncomine data analysis manifested that FAM83A mRNA expression was increased in LUAD. Western blotting revealed higher FAM83A expression in fresh LUAD tissues than in the adjacent lung tissues (P= 0.036). Immunohistochemistry analysis on 86 paraffin samples further demonstrated that the LUAD tissue had higher FAM83A expression than adjacent lung tissue (P< 0.001). The correlation analysis revealed that advanced stage tumors (stage III-IV) had higher FAM83A expression than early stage tumors (stage I-II) (P= 0.004). High FAM83A expression was significantly associated with lymphnode involvement and clinical staging (P= 0.008 and 0.008 respectively). Univariate and multivariate Cox regression analysis manifested that FAM83A expression was an independent predictive factor for poor survival. Kaplan-Meier survival curves showed that patients with higher FAM83A expression had shorter overall survival than those with lower FAM83A expressions (P= 0.002). CONCLUSION FAM83A is upregulated in advanced LUAD and is related to unfavorible prognosis. FAM83A might be a novel diagnostic and prognositic biomarker for LUAD.
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Affiliation(s)
- Junqiang Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.,Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui, China
| | - Gengyun Sun
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Xiaodong Mei
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui, China
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18
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Wang X, Yao S, Xiao Z, Gong J, Liu Z, Han B, Zhang Z. Development and validation of a survival model for lung adenocarcinoma based on autophagy-associated genes. J Transl Med 2020; 18:149. [PMID: 32238163 PMCID: PMC7115085 DOI: 10.1186/s12967-020-02321-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 03/27/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Given that abnormal autophagy is involved in the pathogenesis of cancers, we sought to explore the potential value of autophagy-associated genes in lung adenocarcinoma (LUAD). METHODS RNA sequencing and clinical data on tumour and normal samples were acquired from The Cancer Genome Atlas (TCGA) database and randomly assigned to training and testing groups. Differentially expressed autophagy-associated genes (AAGs) were screened. Within the training group, Cox regression and Lasso regression analyses were conducted to screen five prognostic AAGs, which were used to develop a model. Kaplan-Meier (KM) and receiver operating characteristic (ROC) curves were plotted to determine the performance of the model in both groups. Immunohistochemistry was used to demonstrate the differential expression of AAGs in tumour and normal tissues at the protein level. Gene Ontology (GO) functional annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were utilized to further elucidate the roles of AAGs in LUAD. RESULTS The data from the TCGA database included 497 tumour and 54 normal samples, within which 30 differentially expressed AAGs were screened. Using Cox regression and Lasso regression analyses for the training group, 5 prognostic AAGs were identified and the prognostic model was constructed. Patients with low risk had better overall survival (OS) in the training group (3-year OS, 73.0% vs 48.0%; 5-year OS, 45.0% vs 33.8%; P = 1.305E-04) and in the testing group (3-year OS, 66.8% vs 41.2%; 5-year OS, 31.7% vs 25.8%; P = 1.027E-03). The areas under the ROC curves (AUC) were significant for both the training and testing groups (3-year AUC, 0.810 vs 0.894; 5-year AUC, 0.792 vs 0.749). CONCLUSIONS We developed a survival model for LUAD and validated the performance of the model, which may provide superior outcomes for the patients.
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Affiliation(s)
- Xiaofei Wang
- Department of Lung Cancer Surgery, Tianjin Medical University Cancer Institute and Hospital, Huanhu West Rd, Tianjin, China
| | - Shuang Yao
- Department of Lung Cancer Surgery, Tianjin Medical University Cancer Institute and Hospital, Huanhu West Rd, Tianjin, China
| | - Zengtuan Xiao
- Department of Lung Cancer Surgery, Tianjin Medical University Cancer Institute and Hospital, Huanhu West Rd, Tianjin, China
| | - Jialin Gong
- Department of Lung Cancer Surgery, Tianjin Medical University Cancer Institute and Hospital, Huanhu West Rd, Tianjin, China
| | - Zuo Liu
- Department of Lung Cancer Surgery, Tianjin Medical University Cancer Institute and Hospital, Huanhu West Rd, Tianjin, China
| | - Baoai Han
- Department of Lung Cancer Surgery, Tianjin Medical University Cancer Institute and Hospital, Huanhu West Rd, Tianjin, China
| | - Zhenfa Zhang
- Department of Lung Cancer Surgery, Tianjin Medical University Cancer Institute and Hospital, Huanhu West Rd, Tianjin, China.
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19
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Chen FF, Sun N, Wang Y, Xi HY, Yang Y, Yu BZ, Li XJ. miR-212-5p exerts tumor promoter function by regulating the Id3/PI3K/Akt axis in lung adenocarcinoma cells. J Cell Physiol 2020; 235:7273-7282. [PMID: 32039486 DOI: 10.1002/jcp.29627] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Accepted: 01/06/2020] [Indexed: 12/12/2022]
Abstract
microRNAs may function as oncogenes or tumor suppressor genes that play crucial roles in human carcinogenesis and cancer development. Growing evidence revealed that the tumor suppressor Id3 is involved in tumor progression, carcinogenesis, and the tumor microenvironment. We identified miR-212-5p as a negative posttranscriptional modulator of Id3. Dual luciferase reporter assay was used to verify that Id3 is a direct target gene of miR-212-5p. Id3 was lowly expressed and miR-212-5p was highly expressed in non-small-cell lung cancer (NSCLC) tissues and cells. In addition, we found that NSCLC patients having a higher level of miR-212-5p expression had a shorter survival time. Besides this, miR-212-5p could directly target Id3 and reduce its expression. miR-212-5p overexpression significantly accelerated cell proliferation, migration, and invasion by reversing the effects of Id3. Id3 overexpression by silencing miR-212-5p expression suppressed phosphatidylinositol 3 kinase (PI3K)/Akt activity and consequently promoted apoptosis and inhibited cell proliferation in lung cancer cells. Consistent with the in vitro results, a xenograft mouse model was used to validate the fact that miR-212-5p could promote tumorigenesis by targeting Id3 and activate the PI3K/Akt pathway in vivo as well. Taken together, the present results indicated that miR-212-5p may be involved in progression of NSCLC through the PI3K/Akt signaling pathway by targeting Id3.
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Affiliation(s)
- Fang-Fang Chen
- Jinling Hospital Institute of Clinical Laboratory Science, School of Medicine, Nanjing University, Nanjing, Jiangsu, China
| | - Ning Sun
- Jinling Hospital Institute of Clinical Laboratory Science, School of Medicine, Nanjing University, Nanjing, Jiangsu, China
| | - Yin Wang
- Jinling Hospital Institute of Clinical Laboratory Science, School of Medicine, Nanjing University, Nanjing, Jiangsu, China
| | - Hai-Yan Xi
- Jinling Hospital Institute of Clinical Laboratory Science, School of Medicine, Nanjing University, Nanjing, Jiangsu, China
| | - Yang Yang
- Jinling Hospital Institute of Clinical Laboratory Science, School of Medicine, Nanjing University, Nanjing, Jiangsu, China
| | - Bai-Zeng Yu
- Jinling Hospital Institute of Clinical Laboratory Science, School of Medicine, Nanjing University, Nanjing, Jiangsu, China
| | - Xiao-Jun Li
- Jinling Hospital Institute of Clinical Laboratory Science, School of Medicine, Nanjing University, Nanjing, Jiangsu, China.,State Key Laboratory of Analytical Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing, Jiangsu, China
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20
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Li J, Su T, Yang L, Deng L, Zhang C, He Y. High SLC17A9 expression correlates with poor survival in gastric carcinoma. Future Oncol 2019; 15:4155-4166. [PMID: 31799885 DOI: 10.2217/fon-2019-0283] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Aim: To elucidate the clinicopathological significance and prognostic value of SLC17A9 expression in gastric carcinoma (GC). Methods: SLC17A9 mRNA level and its relationship with TP53 mutation was analyzed. SLC17A9 protein expression was examined by immunohistochemistry in 161 patients. Results: SLC17A9 mRNA and protein expression were higher in GC tissues than in adjacent normal tissues (p < 0.01). SLC17A9 mRNA expression was higher in GC tissues having mutated TP53 than in tissues with wild-type TP53 (p < 0.001). High SLC17A9 expression was also significantly associated with poor overall survival and recurrence-free survival and was also found to be an independent prognostic factor for long-term survival in GC patients.Conclusion: Our results show that SLC17A9 may serve as a potential prognostic biomarker in GC patients.
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Affiliation(s)
- Junqing Li
- Digestive Medicine Centre, Seventh Affiliated Hospital, Sun Yat-sen University, 628 Zhenyuan Road, Shenzhen 518000, PR China
- Department of Gastrointestinal Surgery, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou 510080, PR China
| | - Taiqiang Su
- Digestive Medicine Centre, Seventh Affiliated Hospital, Sun Yat-sen University, 628 Zhenyuan Road, Shenzhen 518000, PR China
- Department of Gastrointestinal Surgery, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou 510080, PR China
| | - Liang Yang
- Department of Gastrointestinal Surgery, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou 510080, PR China
- General Surgical Laboratory, First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, PR China
| | - Lingna Deng
- Scientific Research Centre, Seventh Affiliated Hospital, Sun Yat-sen University, 628 Zhenyuan Road, Shenzhen 518000, PR China
| | - Changhua Zhang
- Digestive Medicine Centre, Seventh Affiliated Hospital, Sun Yat-sen University, 628 Zhenyuan Road, Shenzhen 518000, PR China
| | - Yulong He
- Digestive Medicine Centre, Seventh Affiliated Hospital, Sun Yat-sen University, 628 Zhenyuan Road, Shenzhen 518000, PR China
- Department of Gastrointestinal Surgery, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou 510080, PR China
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21
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Garg AA, Jones TH, Moss SM, Mishra S, Kaul K, Ahirwar DK, Ferree J, Kumar P, Subramaniam D, Ganju RK, Subramaniam VV, Song JW. Electromagnetic fields alter the motility of metastatic breast cancer cells. Commun Biol 2019; 2:303. [PMID: 31428691 PMCID: PMC6687738 DOI: 10.1038/s42003-019-0550-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 07/16/2019] [Indexed: 12/17/2022] Open
Abstract
Interactions between cells and their environment influence key physiologic processes such as their propensity to migrate. However, directed migration controlled by extrinsically applied electrical signals is poorly understood. Using a novel microfluidic platform, we found that metastatic breast cancer cells sense and respond to the net direction of weak (∼100 µV cm-1), asymmetric, non-contact induced Electric Fields (iEFs). iEFs inhibited EGFR (Epidermal Growth Factor Receptor) activation, prevented formation of actin-rich filopodia, and hindered the motility of EGF-treated breast cancer cells. The directional effects of iEFs were nullified by inhibition of Akt phosphorylation. Moreover, iEFs in combination with Akt inhibitor reduced EGF-promoted motility below the level of untreated controls. These results represent a step towards isolating the coupling mechanism between cell motility and iEFs, provide valuable insights into how iEFs target multiple diverging cancer cell signaling mechanisms, and demonstrate that electrical signals are a fundamental regulator of cancer cell migration.
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Affiliation(s)
- Ayush Arpit Garg
- Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210 USA
| | - Travis H. Jones
- Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210 USA
| | - Sarah M. Moss
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210 USA
| | - Sanjay Mishra
- Department of Pathology, College of Medicine, The Ohio State University, Columbus, OH 43210 USA
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210 USA
| | - Kirti Kaul
- Department of Pathology, College of Medicine, The Ohio State University, Columbus, OH 43210 USA
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210 USA
| | - Dinesh K. Ahirwar
- Department of Pathology, College of Medicine, The Ohio State University, Columbus, OH 43210 USA
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210 USA
| | - Jessica Ferree
- Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210 USA
| | - Prabhat Kumar
- Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210 USA
| | - Deepa Subramaniam
- College of Medicine, The Ohio State University, Columbus, OH 43210 USA
| | - Ramesh K. Ganju
- Department of Pathology, College of Medicine, The Ohio State University, Columbus, OH 43210 USA
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210 USA
| | - Vish V. Subramaniam
- Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210 USA
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210 USA
| | - Jonathan W. Song
- Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210 USA
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210 USA
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22
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Curcumin inhibits NF-kB and Wnt/β-catenin pathways in cervical cancer cells. Pathol Res Pract 2019; 215:152556. [PMID: 31358480 DOI: 10.1016/j.prp.2019.152556] [Citation(s) in RCA: 173] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/01/2019] [Accepted: 07/22/2019] [Indexed: 12/11/2022]
Abstract
Curcumin is a natural non-toxic phenol which is isolated from Curcumin longa L. Mounting evidence has revealed the anticancer properties of curcumin in various tumors, but the underlying molecular mechanisms of this suppression in cervical cancer is still remained unclear. Here we assessed the antitumor effects of curcumin compared with 5-Fluorouracil in Hella cells in spheroids models and monolayer cell cultures. The anti-proliferative effects of curcumin and 5-Fluorouracil were as examined in spheroid and monolayer models. The expression levels of Wnt/β-catenin and NF-kB pathways as well as the influence of the cell cycle were evaluated. Curcumin inhibited cell growth in Hella cells through the regulation of NF-kB and Wnt pathways. Also, cells developed a G2/M cell cycle arrest followed by sub-G1 apoptosis with 5-Fluorouracil and curcumin. It was also shown that curcumin either considerably affects the Wnt/β-catenin and NF-kB pathways. We showed that curcumin inhibits invasion and proliferation of cervical cancer cells via impairment of NF-kB and Wnt/β-catenin pathways, proposing further studies on the potential impacts of this compound on cancer therapy.
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Lee E, Lee TA, Yoo HJ, Lee S, Park B. CNBP controls tumor cell biology by regulating tumor-promoting gene expression. Mol Carcinog 2019; 58:1492-1501. [PMID: 31087358 DOI: 10.1002/mc.23030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 01/23/2019] [Accepted: 04/15/2019] [Indexed: 12/31/2022]
Abstract
Cellular nucleic acid-binding protein (CNBP) is associated with cell proliferation, and its expression is elevated in human tumors, but the molecular mechanisms of CNBP in tumor cell biology have not been fully elucidated. In this study, we report that CNBP is a transcription factor essential for regulating matrix metalloproteinases mmp-2, mmp-14, and transcription factor e2f2 gene expression by binding to their promoter regions via a sequence-specific manner. Importantly, epidermal growth factor stimulation is required to induce CNBP phosphorylation and nuclear transport, thereby promoting the expression of mmp-2, mmp-14, and e2f2 genes. As a consequence, loss of cnbp attenuates the ability of tumor cell growth, invasion, and migration. Conversely, overexpression of cnbp is associated with tumor cell biology. Collectively, our findings reveal CNBP as a key transcriptional regulator of tumor-promoting target genes to control tumor cell biology.
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Affiliation(s)
- Eunhye Lee
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Taeyun A Lee
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Hye Jin Yoo
- Division of Tumor Immunology, National Cancer Center, Goyang, South Korea
| | - Sungwook Lee
- Division of Tumor Immunology, National Cancer Center, Goyang, South Korea
| | - Boyoun Park
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
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Song G, Chen L, Zhang B, Song Q, Yu Y, Moore C, Wang TL, Shih IM, Zhang H, Chan DW, Zhang Z, Zhu H. Proteome-wide Tyrosine Phosphorylation Analysis Reveals Dysregulated Signaling Pathways in Ovarian Tumors. Mol Cell Proteomics 2019; 18:448-460. [PMID: 30523211 PMCID: PMC6398206 DOI: 10.1074/mcp.ra118.000851] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 09/20/2018] [Indexed: 11/06/2022] Open
Abstract
The recent accomplishment of comprehensive proteogenomic analysis of high-grade serous ovarian carcinoma (HGSOC) tissues reveals cancer associated molecular alterations were not limited to variations among DNA, and mRNA/protein expression, but are a result of complex reprogramming of signaling pathways/networks mediated by the protein and post-translational modification (PTM) interactomes. A systematic, multiplexed approach interrogating enzyme-substrate relationships in the context of PTMs is fundamental in understanding the dynamics of these pathways, regulation of cellular processes, and their roles in disease processes. Here, as part of Clinical Proteomic Tumor Analysis Consortium (CPTAC) project, we established a multiplexed PTM assay (tyrosine phosphorylation, and lysine acetylation, ubiquitylation and SUMOylation) method to identify protein probes' PTMs on the human proteome array. Further, we focused on the tyrosine phosphorylation and identified 19 kinases are potentially responsible for the dysregulated signaling pathways observed in HGSOC. Additionally, elevated kinase activity was observed when 14 ovarian cancer cell lines or tumor tissues were subjected to test the autophosphorylation status of PTK2 (pY397) and PTK2B (pY402) as a proxy for kinase activity. Taken together, this report demonstrates that PTM signatures based on lysate reactions on human proteome array is a powerful, unbiased approach to identify dysregulated PTM pathways in tumors.
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Affiliation(s)
- Guang Song
- From the ‡Department of Pharmacology & Molecular Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland 21205
| | - Li Chen
- §Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland 21231
| | - Bai Zhang
- §Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland 21231
| | - Qifeng Song
- From the ‡Department of Pharmacology & Molecular Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland 21205
| | - Yu Yu
- §Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland 21231
| | - Cedric Moore
- From the ‡Department of Pharmacology & Molecular Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland 21205
| | - Tian-Li Wang
- §Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland 21231
- ¶Department of Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, Maryland 21231
| | - Ie-Ming Shih
- ¶Department of Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, Maryland 21231
| | - Hui Zhang
- §Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland 21231
| | - Daniel W Chan
- §Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland 21231
| | - Zhen Zhang
- §Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland 21231;
| | - Heng Zhu
- From the ‡Department of Pharmacology & Molecular Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland 21205;
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25
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Lazar IM, Deng J, Stremler MA, Ahuja S. Microfluidic reactors for advancing the MS analysis of fast biological responses. MICROSYSTEMS & NANOENGINEERING 2019; 5:7. [PMID: 31057934 PMCID: PMC6369226 DOI: 10.1038/s41378-019-0048-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 11/08/2018] [Accepted: 12/29/2018] [Indexed: 06/09/2023]
Abstract
The response of cells to physical or chemical stimuli is complex, unfolding on time-scales from seconds to days, with or without de novo protein synthesis, and involving signaling processes that are transient or sustained. By combining the technology of microfluidics that supports fast and precise execution of a variety of cell handling operations, with that of mass spectrometry detection that facilitates an accurate and complex characterization of the protein complement of cells, in this work, we developed a platform that supports (near) real-time sampling and proteome-level capturing of cellular responses to a perturbation such as treatment with mitogens. The geometric design of the chip supports three critical features: (a) capture of a sufficient number of cells to meet the detection limit requirements of mass spectrometry instrumentation, (b) fluid delivery for uniform stimulation of the resident cells, and (c) fast cell recovery, lysis and processing for accurate sampling of time-sensitive cellular responses to a stimulus. COMSOL simulations and microscopy were used to predict and evaluate the flow behavior inside the microfluidic device. Proteomic analysis of the cellular extracts generated by the chip experiments revealed that the identified proteins were representative of all cellular locations, exosomes, and major biological processes related to proliferation and signaling, demonstrating that the device holds promising potential for integration into complex lab-on-chip work-flows that address systems biology questions. The applicability of the chips to study time-sensitive cellular responses is discussed in terms of technological challenges and biological relevance.
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Affiliation(s)
- Iulia M. Lazar
- Department of Biological Sciences, Virginia Tech, 1981 Kraft Drive, Blacksburg, VA 24061 USA
- Virginia Tech Carilion School of Medicine, Virginia Tech, 2 Riverside Circle, Roanoke, VA 24016 USA
| | - Jingren Deng
- Department of Biological Sciences, Virginia Tech, 1981 Kraft Drive, Blacksburg, VA 24061 USA
| | - Mark A. Stremler
- Department of Mechanical Engineering, Virginia Tech, 780 Drillfield Drive, Room 333P, Blacksburg, VA 24061 USA
| | - Shreya Ahuja
- Department of Biological Sciences, Virginia Tech, 1981 Kraft Drive, Blacksburg, VA 24061 USA
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26
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PLK4 is a determinant of temozolomide sensitivity through phosphorylation of IKBKE in glioblastoma. Cancer Lett 2019; 443:91-107. [DOI: 10.1016/j.canlet.2018.11.034] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 11/22/2018] [Accepted: 11/26/2018] [Indexed: 01/11/2023]
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27
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Jang HH. Regulation of Protein Degradation by Proteasomes in Cancer. J Cancer Prev 2018; 23:153-161. [PMID: 30671397 PMCID: PMC6330989 DOI: 10.15430/jcp.2018.23.4.153] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 12/15/2018] [Accepted: 12/18/2018] [Indexed: 12/11/2022] Open
Abstract
Imbalance of protein homeostasis (proteostasis) is known to cause cellular malfunction, cell death, and diseases. Elaborate regulation of protein synthesis and degradation is one of the important processes in maintaining normal cellular functions. Protein degradation pathways in eukaryotes are largely divided into proteasome-mediated degradation and lysosome-mediated degradation. Proteasome is a multisubunit complex that selectively degrades 80% to 90% of cellular proteins. Proteasome-mediated degradation can be divided into 26S proteasome (20S proteasome + 19S regulatory particle) and free 20S proteasome degradation. In 1980, it was discovered that during ubiquitination process, wherein ubiquitin binds to a substrate protein in an ATP-dependent manner, ubiquitin acts as a degrading signal to degrade the substrate protein via proteasome. Conversely, 20S proteasome degrades the substrate protein without using ATP or ubiquitin because it recognizes the oxidized and structurally modified hydrophobic patch of the substrate protein. To date, most studies have focused on protein degradation via 26S proteasome. This review describes the 26S/20S proteasomal pathway of protein degradation and discusses the potential of proteasome as therapeutic targets for cancer treatment as well as against diseases caused by abnormalities in the proteolytic system.
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Affiliation(s)
- Ho Hee Jang
- Department of Biochemistry, College of Medicine, Gachon University, Incheon, Korea
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28
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Azimi I, Bong AH, Poo GXH, Armitage K, Lok D, Roberts-Thomson SJ, Monteith GR. Pharmacological inhibition of store-operated calcium entry in MDA-MB-468 basal A breast cancer cells: consequences on calcium signalling, cell migration and proliferation. Cell Mol Life Sci 2018; 75:4525-4537. [PMID: 30105615 PMCID: PMC11105359 DOI: 10.1007/s00018-018-2904-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 08/08/2018] [Accepted: 08/09/2018] [Indexed: 12/14/2022]
Abstract
Store-operated Ca2+ entry is a pathway that is remodelled in a variety of cancers, and altered expression of the components of store-operated Ca2+ entry is a feature of breast cancer cells of the basal molecular subtype. Studies of store-operated Ca2+ entry in breast cancer cells have used non-specific pharmacological inhibitors, complete depletion of intracellular Ca2+ stores and have mostly focused on MDA-MB-231 cells (a basal B breast cancer cell line). These studies compared the effects of the selective store-operated Ca2+ entry inhibitors Synta66 and YM58483 (also known as BTP2) on global cytosolic free Ca2+ ([Ca2+]CYT) changes induced by physiological stimuli in a different breast cancer basal cell line model, MDA-MB-468. The effects of these agents on proliferation as well as serum and epidermal growth factor (EGF) induced migration were also assessed. Activation with the purinergic receptor activator adenosine triphosphate, produced a sustained increase in [Ca2+]CYT that was entirely dependent on store-operated Ca2+ entry. The protease activated receptor 2 activator, trypsin, and EGF also produced Ca2+ influx that was sensitive to both Synta66 and YM58483. Serum-activated migration of MDA-MB-468 breast cancer cells was sensitive to both store-operated Ca2+ inhibitors. However, proliferation and EGF-activated migration was differentially affected by Synta66 and YM58483. These studies highlight the need to define the exact mechanisms of action of different store-operated calcium entry inhibitors and the impact of such differences in the control of tumour progression pathways.
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Affiliation(s)
- Iman Azimi
- School of Pharmacy, The University of Queensland, Brisbane, QLD, Australia
- Mater Research Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia
- Division of Pharmacy, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
| | - Alice H Bong
- School of Pharmacy, The University of Queensland, Brisbane, QLD, Australia
| | - Greta X H Poo
- School of Pharmacy, The University of Queensland, Brisbane, QLD, Australia
| | - Kaela Armitage
- School of Pharmacy, The University of Queensland, Brisbane, QLD, Australia
| | - Dawn Lok
- School of Pharmacy, The University of Queensland, Brisbane, QLD, Australia
| | | | - Gregory R Monteith
- School of Pharmacy, The University of Queensland, Brisbane, QLD, Australia.
- Mater Research Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia.
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29
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Peng Z, Lu J, Zhang L, Liu Y, Li J. Label-free imaging of epidermal growth factor receptor-induced response in single living cells. Analyst 2018; 143:5264-5270. [PMID: 30280173 DOI: 10.1039/c8an01534a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Epidermal growth factor receptor (EGFR), which belongs to the second-largest protein family for cell signal transduction, plays crucial roles in homeostasis, cellular organized patterns and most human cancers. In EGFR-activated signaling networks, the detection of the spatial and temporal dynamics of cascades that encode the many cell fates is still a challenge. Here, we report real-time imaging of epidermal growth factor (EGF)-induced EGFR activation and its signaling cascade in single A431 cells using surface plasmon resonance (SPR) microscopy. A two-phase SPR response pattern was observed within 30 min after EGF treatment, including a positive SPR response that was related to the EGFR-activated mass redistribution in the first 600 s, and a subsequent negative SPR signal caused by the morphological change of the cells. Furthermore, the inhibitor analysis verified that AG1478 inhibited the response from the whole the cell, whereas cytochalasin B strongly inhibited the response from the cell edge region.
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Affiliation(s)
- Zanying Peng
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China.
| | - Jin Lu
- Department of Electrical and Systems Engineering, Washington University in St Louis, MO 63130, USA
| | - Ling Zhang
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China.
| | - Yang Liu
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China.
| | - Jinghong Li
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China.
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30
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Alon M, Arafeh R, Lee JS, Madan S, Kalaora S, Nagler A, Abgarian T, Greenberg P, Ruppin E, Samuels Y. CAPN1 is a novel binding partner and regulator of the tumor suppressor NF1 in melanoma. Oncotarget 2018; 9:31264-31277. [PMID: 30131853 PMCID: PMC6101293 DOI: 10.18632/oncotarget.25805] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 07/05/2018] [Indexed: 11/25/2022] Open
Abstract
Neurofibromin 1 (NF1), a tumor suppressor that negatively regulates RAS through its GTPase activity, is highly mutated in various types of sporadic human cancers, including melanoma. However, the binding partners of NF1 and the pathways in which it is involved in melanoma have not been characterized in an in depth manner. Utilizing a mass spectrometry analysis of NF1 binding partners, we revealed Calpain1 (CAPN1), a calcium-dependent neutral cysteine protease, as a novel NF1 binding partner that regulates NF1 degradation in melanoma cells. ShRNA-mediated knockdown of CAPN1 or treatment with a CAPN1 inhibitor stabilizes NF1 protein levels, downregulates AKT signaling and melanoma cell growth. Combination treatment of Calpain inhibitor I with MEKi Trametinib in different melanoma cells is more effective in reducing melanoma cell growth compared to treatment with Trametinib alone, suggesting that this combination may have a therapeutic potential in melanoma. This novel mechanism for regulating NF1 in melanoma provides a molecular basis for targeting CAPN1 in order to stabilize NF1 levels and, in doing so, suppressing Ras activation; this mechanism can be exploited therapeutically in melanoma and other cancers.
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Affiliation(s)
- Michal Alon
- Molecular Cell Biology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Rand Arafeh
- Molecular Cell Biology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Joo Sang Lee
- Center for Bioinformatics and Computational Biology, The University of Maryland, College Park, Maryland, USA
- Cancer Data Science Lab, National Cancer Institute, National Institute of Health, Bethesda, Maryland, USA
| | - Sanna Madan
- Center for Bioinformatics and Computational Biology, The University of Maryland, College Park, Maryland, USA
- Cancer Data Science Lab, National Cancer Institute, National Institute of Health, Bethesda, Maryland, USA
| | - Shelly Kalaora
- Molecular Cell Biology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Adi Nagler
- Molecular Cell Biology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Tereza Abgarian
- Molecular Cell Biology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Polina Greenberg
- Molecular Cell Biology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Eytan Ruppin
- Center for Bioinformatics and Computational Biology, The University of Maryland, College Park, Maryland, USA
- Cancer Data Science Lab, National Cancer Institute, National Institute of Health, Bethesda, Maryland, USA
| | - Yardena Samuels
- Molecular Cell Biology Department, Weizmann Institute of Science, Rehovot, Israel
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31
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Hastings JF, Han JZR, Shearer RF, Kennedy SP, Iconomou M, Saunders DN, Croucher DR. Dissecting Multi-protein Signaling Complexes by Bimolecular Complementation Affinity Purification (BiCAP). J Vis Exp 2018. [PMID: 29985350 DOI: 10.3791/57109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The assembly of protein complexes is a central mechanism underlying the regulation of many cell signaling pathways. A major focus of biomedical research is deciphering how these dynamic protein complexes act to integrate signals from multiple sources in order to direct a specific biological response, and how this becomes deregulated in many disease settings. Despite the importance of this key biochemical mechanism, there is a lack of experimental techniques that can facilitate the specific and sensitive deconvolution of these multi-molecular signaling complexes. Here this shortcoming is addressed through the combination of a protein complementation assay with a conformation-specific nanobody, which we have termed Bimolecular Complementation Affinity Purification (BiCAP). This novel technique facilitates the specific isolation and downstream proteomic characterization of any pair of interacting proteins, to the exclusion of un-complexed individual proteins and complexes formed with competing binding partners. The BiCAP technique is adaptable to a wide array of downstream experimental assays, and the high degree of specificity afforded by this technique allows more nuanced investigations into the mechanics of protein complex assembly than is currently possible using standard affinity purification techniques.
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Affiliation(s)
| | - Jeremy Z R Han
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research
| | - Robert F Shearer
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research; Ubiquitin Signaling Group, Protein Signaling Program, The Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen
| | - Sean P Kennedy
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research; RCSI Molecular Medicine, Royal College of Surgeons in Ireland
| | - Mary Iconomou
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research; Department of Epigenetics, Max Planck Institute of Immunobiology and Epigenetics
| | | | - David R Croucher
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research; St Vincent's Hospital Clinical School, University of New South Wales; School of Medicine and Medical Science, University College Dublin;
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32
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Hewitt SH, Wilson AJ. Protein sensing and discrimination using highly functionalised ruthenium(ii) tris(bipyridyl) protein surface mimetics in an array format. Chem Commun (Camb) 2018; 53:12278-12281. [PMID: 29090688 DOI: 10.1039/c7cc06175g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Ruthenium(ii) tris(bipyridyl) protein surface mimetics are used in an array format to sense and discriminate proteins including therapeutically relevant targets, hDM2 and MCL-1, using linear discriminant analysis (LDA).
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Affiliation(s)
- Sarah H Hewitt
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
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33
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Ankenbruck N, Courtney T, Naro Y, Deiters A. Optochemical Control of Biological Processes in Cells and Animals. Angew Chem Int Ed Engl 2018; 57:2768-2798. [PMID: 28521066 PMCID: PMC6026863 DOI: 10.1002/anie.201700171] [Citation(s) in RCA: 293] [Impact Index Per Article: 48.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 05/06/2017] [Indexed: 12/13/2022]
Abstract
Biological processes are naturally regulated with high spatial and temporal control, as is perhaps most evident in metazoan embryogenesis. Chemical tools have been extensively utilized in cell and developmental biology to investigate cellular processes, and conditional control methods have expanded applications of these technologies toward resolving complex biological questions. Light represents an excellent external trigger since it can be controlled with very high spatial and temporal precision. To this end, several optically regulated tools have been developed and applied to living systems. In this review we discuss recent developments of optochemical tools, including small molecules, peptides, proteins, and nucleic acids that can be irreversibly or reversibly controlled through light irradiation, with a focus on applications in cells and animals.
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Affiliation(s)
- Nicholas Ankenbruck
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA
| | - Taylor Courtney
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA
| | - Yuta Naro
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA
| | - Alexander Deiters
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA
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EGF receptor kinase suppresses ciliogenesis through activation of USP8 deubiquitinase. Nat Commun 2018; 9:758. [PMID: 29472535 PMCID: PMC5823934 DOI: 10.1038/s41467-018-03117-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 01/18/2018] [Indexed: 12/21/2022] Open
Abstract
Ciliogenesis is generally inhibited in dividing cells, however, it has been unclear which signaling cascades regulate the phenomenon. Here, we report that epidermal growth factor receptor (EGFR) kinase suppresses ciliogenesis by directly phosphorylating the deubiquitinase USP8 on Tyr-717 and Tyr-810 in RPE1 cells. These phosphorylations elevate the deubiquitinase activity, which then stabilizes the trichoplein-Aurora A pathway, an inhibitory mechanism of ciliogenesis. EGFR knockdown and serum starvation result in ciliogenesis through downregulation of the USP8-trichoplein-Aurora A signal. Moreover, primary cilia abrogation, which is induced upon IFT20 or Cep164 depletion, ameliorates the cell cycle arrest of EGFR knockdown cells. The present data reveal that the EGFR-USP8-trichoplein-Aurora A axis is a critical signaling cascade that restricts ciliogenesis in dividing cells, and functions to facilitate cell proliferation. We further show that usp8 knockout zebrafish develops ciliopathy-related phenotypes including cystic kidney, suggesting that USP8 is a regulator of ciliogenesis in vertebrates.
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35
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Zhang C, Wang Y, Feng Y, Zhang Y, Ji B, Wang S, Sun Y, Zhu C, Zhang D, Sun Y. Gli1 promotes colorectal cancer metastasis in a Foxm1-dependent manner by activating EMT and PI3K-AKT signaling. Oncotarget 2018; 7:86134-86147. [PMID: 27863385 PMCID: PMC5349902 DOI: 10.18632/oncotarget.13348] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 11/08/2016] [Indexed: 01/11/2023] Open
Abstract
Colorectal cancer(CRC) is one of the most commonly diagnosed cancers in human beings and metastasis is the main death reason. Recently, Gli1 has been reported to be a key regulator of various cancer biologies and genes expressions. However, the detailed molecular mechanism of Gli1 in CRC metastasis remains largely unknown. In this study, we aimed to investigate the role of Gli1 in CRC metastasis. We used qRT-PCR, Immunohistochemistry and Western blot to test the expression levels of Gli1, Foxm1 and other target genes in the tissues and cells; Lentivirus stable transfection to change the expression levels of Gli1 and Foxm1; Wound-healing, cell invasion, migration assays and tail vein metastatic assay to test the role of Gli1 in CRC metastasis in vitro and vivo. We demonstrated that Gli1 was significantly overexpressed in colorectal cancer tissues and cells. Foxm1 level had a positive correlation with Gli1. Furthermore, we found that Gli1 promotes colorectal cancer cells metastasis in a Foxm1-dependent manner by activating EMT and PI3K-AKT signaling. Thus, we proved that Gli1 plays important role in CRC metastasis and provided a new visual field on the therapy of CRC metastasis.
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Affiliation(s)
- Chuan Zhang
- Colorectal Department of the First Affiliated Hospital of Nanjing Medical University , Nanjing, Jiangsu CHINA, 210029
| | - Yong Wang
- Colorectal Department of the First Affiliated Hospital of Nanjing Medical University , Nanjing, Jiangsu CHINA, 210029
| | - YiFei Feng
- Colorectal Department of the First Affiliated Hospital of Nanjing Medical University , Nanjing, Jiangsu CHINA, 210029
| | - Yue Zhang
- Colorectal Department of the First Affiliated Hospital of Nanjing Medical University , Nanjing, Jiangsu CHINA, 210029
| | - Bing Ji
- Colorectal Department of the First Affiliated Hospital of Nanjing Medical University , Nanjing, Jiangsu CHINA, 210029
| | - Sen Wang
- Colorectal Department of the First Affiliated Hospital of Nanjing Medical University , Nanjing, Jiangsu CHINA, 210029
| | - Ye Sun
- Colorectal Department of the First Affiliated Hospital of Nanjing Medical University , Nanjing, Jiangsu CHINA, 210029
| | - Chunyan Zhu
- Colorectal Department of the First Affiliated Hospital of Nanjing Medical University , Nanjing, Jiangsu CHINA, 210029
| | - Dongsheng Zhang
- Colorectal Department of the First Affiliated Hospital of Nanjing Medical University , Nanjing, Jiangsu CHINA, 210029
| | - Yueming Sun
- Colorectal Department of the First Affiliated Hospital of Nanjing Medical University , Nanjing, Jiangsu CHINA, 210029
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36
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Xia H, Dai X, Yu H, Zhou S, Fan Z, Wei G, Tang Q, Gong Q, Bi F. EGFR-PI3K-PDK1 pathway regulates YAP signaling in hepatocellular carcinoma: the mechanism and its implications in targeted therapy. Cell Death Dis 2018; 9:269. [PMID: 29449645 PMCID: PMC5833379 DOI: 10.1038/s41419-018-0302-x] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 12/21/2017] [Accepted: 01/08/2018] [Indexed: 02/05/2023]
Abstract
The epidermal growth factor receptor (EGFR) pathway and Hippo signaling play an important role in the carcinogenesis of hepatocellular carcinoma (HCC). However, the crosstalk between these two pathways and its implications in targeted therapy remains unclear. We found that the activated EGFR signaling could bypass RhoA to promote the expression of YAP(Yes-associated protein), the core effector of the Hippo signaling, and its downstream target Cyr61. Further studies indicated that EGFR signaling mainly acted through the PI3K-PDK1 (Phosphoinositide 3-kinase-Phosphoinositide-dependent kinase-1) pathway to activate YAP, but not the AKT and MAPK pathways. While YAP knockdown hardly affected the EGFR signaling. In addition, EGF could promote the proliferation of HCC cells in a YAP-independent manner. Combined targeting of YAP and EGFR signaling by simvastatin and the EGFR signaling inhibitors, including the EGFR tyrosine kinase inhibitor (TKI) gefitinib, the RAF inhibitor sorafenib and the MEK inhibitor trametinib, presented strong synergistic cytotoxicities in HCC cells. Therefore, the EGFR-PI3K-PDK1 pathway could activate the YAP signaling, and the activated EGFR signaling could promote the HCC cell growth in a YAP-independent manner. Combined use of FDA-approved inhibitors to simultaneously target YAP and EGFR signaling presented several promising therapeutic approaches for HCC treatment.
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Affiliation(s)
- Hongwei Xia
- Laboratory of Molecular Targeted Therapy in Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, 610041, Chengdu, Sichuan Province, China
| | - Xinyu Dai
- Department of Medical Oncology and Cancer Center, West China Hospital of Sichuan University, 610041, Chengdu, Sichuan Province, China
| | - Huangfei Yu
- Department of Medical Oncology and Cancer Center, West China Hospital of Sichuan University, 610041, Chengdu, Sichuan Province, China
| | - Sheng Zhou
- Department of Medical Oncology and Cancer Center, West China Hospital of Sichuan University, 610041, Chengdu, Sichuan Province, China
| | - Zhenghai Fan
- Department of Medical Oncology and Cancer Center, West China Hospital of Sichuan University, 610041, Chengdu, Sichuan Province, China
| | - Guoqing Wei
- Laboratory of Molecular Targeted Therapy in Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, 610041, Chengdu, Sichuan Province, China
| | - Qiulin Tang
- Laboratory of Molecular Targeted Therapy in Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, 610041, Chengdu, Sichuan Province, China
| | - Qiyong Gong
- Department of Radiology, West China Hospital of Sichuan University, 610041, Chengdu, Sichuan Province, China
| | - Feng Bi
- Laboratory of Molecular Targeted Therapy in Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, 610041, Chengdu, Sichuan Province, China.
- Department of Medical Oncology and Cancer Center, West China Hospital of Sichuan University, 610041, Chengdu, Sichuan Province, China.
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37
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Ankenbruck N, Courtney T, Naro Y, Deiters A. Optochemische Steuerung biologischer Vorgänge in Zellen und Tieren. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201700171] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Nicholas Ankenbruck
- Department of Chemistry University of Pittsburgh Pittsburgh Pennsylvania 15260 USA
| | - Taylor Courtney
- Department of Chemistry University of Pittsburgh Pittsburgh Pennsylvania 15260 USA
| | - Yuta Naro
- Department of Chemistry University of Pittsburgh Pittsburgh Pennsylvania 15260 USA
| | - Alexander Deiters
- Department of Chemistry University of Pittsburgh Pittsburgh Pennsylvania 15260 USA
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38
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Paviolo C, Chon JWM, Clayton AHA. The Effect of Nanoparticles on the Cluster Size Distributions of Activated EGFR Measured with Photobleaching Image Correlation Spectroscopy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1112:41-52. [PMID: 30637689 DOI: 10.1007/978-981-13-3065-0_4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The epidermal growth factor receptor (EGFR) is an important cell surface receptor in normal physiology and disease. Recent work has shown that EGF-gold nanoparticle conjugates can influence cell behaviour, but the underlying mechanism at the receptor quaternary structural level remains poorly understood.In the present work, the cluster density and cluster size of activated (phosphorylated) EGFR clusters in HeLa cells were determined with photobleaching image correlation spectroscopy. EGFR activation was probed via immunofluorescence-detected phosphorylation of tyrosines (pY-mAb) located in the kinase domain of EGFR (Y845) and at the EGFR cytoplasmic tail (Y1173). Cell activation was probed via nuclear extracellular-regulated kinase (ERK) phosphorylation. The cluster size of activated EGFR was 1.3-2.4 pY-mAb/cluster in unstimulated HeLa cells. EGF or nanorod treatment led to an increase in EGFR oligomers containing multiple phosphotyrosines (>2 phosphotyrosines per EGFR oligomer, average cluster size range = 3-5 pY-mAb/cluster) which paralleled increases in nuclear p-ERK. In contrast, EGF-nanorods decreased the contribution from higher-order phospho-clusters and decreased nuclear p-ERK relative to the nanorod control. These studies provide direct evidence that targeted nanotechnology can manipulate receptor organization and lead to changes in receptor activation and subsequent signalling processes.
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Affiliation(s)
- Chiara Paviolo
- Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, Australia
| | - James W M Chon
- Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, Australia.
| | - Andrew H A Clayton
- Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, Australia.
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39
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Dahmke IN, Verch A, Hermannsdörfer J, Peckys DB, Weatherup RS, Hofmann S, de Jonge N. Graphene Liquid Enclosure for Single-Molecule Analysis of Membrane Proteins in Whole Cells Using Electron Microscopy. ACS NANO 2017; 11:11108-11117. [PMID: 29023096 DOI: 10.1021/acsnano.7b05258] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Membrane proteins govern many important functions in cells via dynamic oligomerization into active complexes. However, analytical methods to study their distribution and functional state in relation to the cellular structure are currently limited. Here, we introduce a technique for studying single-membrane proteins within their native context of the intact plasma membrane. SKBR3 breast cancer cells were grown on silicon microchips with thin silicon nitride windows. The cells were fixed, and the epidermal growth factor receptor ErbB2 was specifically labeled with quantum dot (QD) nanoparticles. For correlative fluorescence- and liquid-phase electron microscopy, we enclosed the liquid samples by chemical vapor deposited (CVD) graphene films. Depending on the local cell thickness, QD labels were imaged with a spatial resolution of 2 nm at a low electron dose. The distribution and stoichiometric assembly of ErbB2 receptors were determined at several different cellular locations, including tunneling nanotubes, where we found higher levels of homodimerization at the connecting sites. This experimental approach is applicable to a wide range of cell lines and membrane proteins and particularly suitable for studies involving both inter- and intracellular heterogeneity in protein distribution and expression.
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Affiliation(s)
- Indra N Dahmke
- INM - Leibniz Institute for New Materials , D-66123 Saarbrücken, Germany
| | - Andreas Verch
- INM - Leibniz Institute for New Materials , D-66123 Saarbrücken, Germany
| | | | - Diana B Peckys
- Department of Biophysics, Saarland University , D-66421 Homburg, Germany
| | - Robert S Weatherup
- Engineering Department, University of Cambridge , Cambridge CB3 0FA, United Kingdom
| | - Stephan Hofmann
- Engineering Department, University of Cambridge , Cambridge CB3 0FA, United Kingdom
| | - Niels de Jonge
- INM - Leibniz Institute for New Materials , D-66123 Saarbrücken, Germany
- Department of Physics, Saarland University , D-66123 Saarbrücken, Germany
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40
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Comprehensive Analysis of Cancer-Proteogenome to Identify Biomarkers for the Early Diagnosis and Prognosis of Cancer. Proteomes 2017; 5:proteomes5040028. [PMID: 29068423 PMCID: PMC5748563 DOI: 10.3390/proteomes5040028] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 10/13/2017] [Accepted: 10/17/2017] [Indexed: 02/07/2023] Open
Abstract
During the past century, our understanding of cancer diagnosis and treatment has been based on a monogenic approach, and as a consequence our knowledge of the clinical genetic underpinnings of cancer is incomplete. Since the completion of the human genome in 2003, it has steered us into therapeutic target discovery, enabling us to mine the genome using cutting edge proteogenomics tools. A number of novel and promising cancer targets have emerged from the genome project for diagnostics, therapeutics, and prognostic markers, which are being used to monitor response to cancer treatment. The heterogeneous nature of cancer has hindered progress in understanding the underlying mechanisms that lead to abnormal cellular growth. Since, the start of The Cancer Genome Atlas (TCGA), and the International Genome consortium projects, there has been tremendous progress in genome sequencing and immense numbers of cancer genomes have been completed, and this approach has transformed our understanding of the diagnosis and treatment of different types of cancers. By employing Genomics and proteomics technologies, an immense amount of genomic data is being generated on clinical tumors, which has transformed the cancer landscape and has the potential to transform cancer diagnosis and prognosis. A complete molecular view of the cancer landscape is necessary for understanding the underlying mechanisms of cancer initiation to improve diagnosis and prognosis, which ultimately will lead to personalized treatment. Interestingly, cancer proteome analysis has also allowed us to identify biomarkers to monitor drug and radiation resistance in patients undergoing cancer treatment. Further, TCGA-funded studies have allowed for the genomic and transcriptomic characterization of targeted cancers, this analysis aiding the development of targeted therapies for highly lethal malignancy. High-throughput technologies, such as complete proteome, epigenome, protein-protein interaction, and pharmacogenomics data, are indispensable to glean into the cancer genome and proteome and these approaches have generated multidimensional universal studies of genes and proteins (OMICS) data which has the potential to facilitate precision medicine. However, due to slow progress in computational technologies, the translation of big omics data into their clinical aspects have been slow. In this review, attempts have been made to describe the role of high-throughput genomic and proteomic technologies in identifying a panel of biomarkers which could be used for the early diagnosis and prognosis of cancer.
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41
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Li H, Al-Japairai K, Tao Y, Xiang Z. RPN2 promotes colorectal cancer cell proliferation through modulating the glycosylation status of EGFR. Oncotarget 2017; 8:72633-72651. [PMID: 29069815 PMCID: PMC5641158 DOI: 10.18632/oncotarget.20005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 07/12/2017] [Indexed: 12/15/2022] Open
Abstract
Various studies have found that silencing ribophorin II (RPN2) inhibits cell growth in several cancers. However, the underlying mechanism by which RPN2 regulates cancer cell proliferation remains unclear. Herein, we reveal that downregulation of RPN2, which may be a crucial regulator of N-linked glycosylation in cancer cells and drug-resistant cancer cells, promoted the progression of colorectal cancer (CRC) cell cycle and proliferation in vitro and in vivo. We found that RPN2 silencing reduced glycosylation of EGFR, a highly N-link glycosylated cell surface glycoprotein that plays a critical role in majority of human cancers correlating with increased cell growth, proliferation, and differentiation. In addition, RPN2 knockdown decreased EGFR expression and cell surface transport by EGFR deglycosylation. In summary, our findings suggest that RPN2 regulates CRC cell proliferation through mediating the glycosylation of EGFR which affecting the EGFR/ERK signaling pathways. Clinicopathological analysis showed that the overexpression of RPN2 and EGFR was positively correlated with colorectal tumor size. Therefore, RPN2 may be a new therapeutic target and prognostic biomarker for CRC.
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Affiliation(s)
- Haiping Li
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Department of General Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - K Al-Japairai
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Department of General Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yong Tao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Department of General Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zheng Xiang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Department of General Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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42
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Zou ZZ, Nie PP, Li YW, Hou BX, Rui-Li, Shi XP, Ma ZK, Han BW, Luo XY. Synergistic induction of apoptosis by salinomycin and gefitinib through lysosomal and mitochondrial dependent pathway overcomes gefitinib resistance in colorectal cancer. Oncotarget 2017; 8:22414-22432. [PMID: 26461472 PMCID: PMC5410233 DOI: 10.18632/oncotarget.5628] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 09/09/2015] [Indexed: 01/16/2023] Open
Abstract
Here, we showed the antibiotic salinomycin (SAL) combined with GEF exerted synergistic cytotoxicity effects in colorectal cancer cells irrespective of their EGFR and KRAS status, with a relatively low toxicity to normal cells. Additionally, combination of the two drugs overcame Ras-induced resistance and the acquired resistance to GEF. Further, we identified a new potential mechanism of this cooperative interaction by showing that GEF and SAL acted together to enhance production of reactive oxygen species (ROS), loss of mitochondrial membrane potential (MMP) and lysosomal membrane potential (LMP). And the ROS contributed the loss of MMP and LMP. We also found that GEF and SAL acted in concert to induce apoptosis via a mitochondrial-lysosomal cross-talk and caspase-independent pathway triggered by cathepsin B and D. Lastly, SAL in combination with GEF sensitized GEF-resistant cells to GEF in a nude mouse xenograft model. This novel combination treatment might provide a potential clinical application to overcome GEF resistance in colorectal cancer.
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Affiliation(s)
- Zheng-Zhi Zou
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China.,Joint Laboratory of Laser Oncology with Cancer Center of Sun Yat-sen University, South China Normal University, Guangzhou, China
| | - Pei-Pei Nie
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China.,KingMed Diagnostics and KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, China
| | - Ya-Wei Li
- Surgical department, The Affiliated Luoyang Central Hospital of Zhengzhou University, Luoyang, China
| | - Ben-Xin Hou
- Department of General Surgery, Hainan Province Nongken Sanya Hospital, Sanya, China
| | - Rui-Li
- Surgical department, The Affiliated Luoyang Central Hospital of Zhengzhou University, Luoyang, China
| | - Xin-Peng Shi
- Department of Oncology, The Affiliated Luoyang Central Hospital of Zhengzhou University, Luoyang, China
| | - Zhao-Kui Ma
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China.,Joint Laboratory of Laser Oncology with Cancer Center of Sun Yat-sen University, South China Normal University, Guangzhou, China
| | - Bao-Wei Han
- Surgical department, The Affiliated Luoyang Central Hospital of Zhengzhou University, Luoyang, China
| | - Xiao-Yong Luo
- Department of Oncology, The Affiliated Luoyang Central Hospital of Zhengzhou University, Luoyang, China
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43
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Peckys DB, Korf U, Wiemann S, de Jonge N. Liquid-phase electron microscopy of molecular drug response in breast cancer cells reveals irresponsive cell subpopulations related to lack of HER2 homodimers. Mol Biol Cell 2017; 28:mbc.E17-06-0381. [PMID: 28794264 PMCID: PMC5687022 DOI: 10.1091/mbc.e17-06-0381] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 07/27/2017] [Accepted: 08/01/2017] [Indexed: 12/31/2022] Open
Abstract
The development of drug resistance in cancer poses a major clinical problem. An example is human epidermal growth factor receptor 2 (HER2) overexpressing breast cancer often treated with anti-HER2 antibody therapies, such as trastuzumab. Since drug resistance is rooted mainly in tumor cell heterogeneity, we examined the drug effect in different subpopulations of SKBR3 breast cancer cells, and compared the results with a drug resistant cell line, HCC1954. Correlative light microscopy and liquid-phase scanning transmission electron microscopy (STEM) were used to quantitatively analyze HER2 responses upon drug binding, whereby many tens of whole cells were imaged. Trastuzumab was found to selectively cross-link and down regulate HER2 homodimers from the plasma membranes of bulk cancer cells. In contrast, HER2 resided mainly as monomers in rare subpopulations of resting- and cancer stem cells (CSCs), and these monomers were not internalized after drug binding. The HER2 distribution was hardly influenced by trastuzumab for the HCC1954 cells. These findings show that resting cells and CSCs are irresponsive to the drug, and thus point towards a molecular explanation behind the origin of drug resistance. This analytical method is broadly applicable to study membrane protein interactions in the intact plasma membrane, while accounting for cell heterogeneity.
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Affiliation(s)
- Diana B Peckys
- Department of Biophysics, Saarland University, D-66421 Homburg, Germany
| | - Ulrike Korf
- Division of Molecular Genome Analysis, German Cancer Research Center, 69120 Heidelberg, Germany
| | - Stefan Wiemann
- Division of Molecular Genome Analysis, German Cancer Research Center, 69120 Heidelberg, Germany
| | - Niels de Jonge
- INM - Leibniz Institute for New Materials, 66123 Saarbrücken, Germany
- Department of Physics, Saarland University, 66123 Saarbrücken, Germany
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44
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Rohban R, Prietl B, Pieber TR. Crosstalk between Stem and Progenitor Cellular Mediators with Special Emphasis on Vasculogenesis. Transfus Med Hemother 2017. [PMID: 28626368 DOI: 10.1159/000477677] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The cellular components and molecular processes of signaling during vasculogenesis have been investigated for decades. Considerable efforts have been made to unravel regulatory mechanisms of vasculogenesis through crosstalk between vasculogenic playmakers located in the vascular niche, namely hematopoietic stem cells, endothelial progenitor cells, and mesenchymal stem and progenitor cells. Recent studies have increased the knowledge about signaling events within vascular microenvironment that leads to vasculogenesis. Findings from these recent studies indicate the impact of cellular crosstalk through signaling pathways such as vascular endothelial growth factor signaling, wingless and Notch signaling in vasculogenesis and vascular development. In this review, we highlight the signaling signature between stem and progenitor cellular mediators during vasculogenesis. We further focus on hematopoietic stem cell-endothelial progenitor cell crosstalk during vasculogenesis and discuss their potential implications and benefits for therapeutic interventions and regenerative therapy.
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Affiliation(s)
- Rokhsareh Rohban
- Department of Internal Medicine, Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria.,Center for Medical Research (ZMF), Medical University of Graz, Graz, Austria
| | - Barbara Prietl
- Department of Internal Medicine, Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria.,Competence Center for Biomarker Research in Medicine, CBmed, Graz, Austria
| | - Thomas R Pieber
- Department of Internal Medicine, Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria.,Competence Center for Biomarker Research in Medicine, CBmed, Graz, Austria.,HEALTH-Institute for Biomedicine and Health Sciences, Joanneum Research Forschungsgesellschaft m.b.H, Graz, Austria
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45
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Abstract
The calcium signal is a powerful and multifaceted tool by which cells can achieve specific outcomes. Cellular machinery important in tumour progression is often driven or influenced by changes in calcium ions; in some cases this regulation occurs within spatially defined regions. Over the past decade there has been a deeper understanding of how calcium signalling is remodelled in some cancers and the consequences of calcium signalling on key events such as proliferation, invasion and sensitivity to cell death. Specific calcium signalling pathways have also now been identified as playing important roles in the establishment and maintenance of multidrug resistance and the tumour microenvironment.
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Affiliation(s)
- Gregory R Monteith
- The School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Brisbane, Queensland 4102, Australia
- Mater Research Institute, The University of Queensland, Brisbane, Queensland 4102, Australia
- Translational Research Institute, Brisbane, Queensland 4102, Australia
| | - Natalia Prevarskaya
- Institut National de la Santé et de la Recherche Médicale U1003, Laboratoire de Physiologie Cellulaire, Equipe labellisée par la Ligue contre le cancer, and Universite de Lille 1, Villeneuve d'Ascq, F-59650, France
| | - Sarah J Roberts-Thomson
- The School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Brisbane, Queensland 4102, Australia
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46
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Genomic analysis of oesophageal squamous-cell carcinoma identifies alcohol drinking-related mutation signature and genomic alterations. Nat Commun 2017; 8:15290. [PMID: 28548104 PMCID: PMC5477513 DOI: 10.1038/ncomms15290] [Citation(s) in RCA: 154] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 03/16/2017] [Indexed: 12/21/2022] Open
Abstract
Approximately half of the world's 500,000 new oesophageal squamous-cell carcinoma (ESCC) cases each year occur in China. Here, we show whole-genome sequencing of DNA and RNA in 94 Chinese individuals with ESCC. We identify six mutational signatures (E1-E6), and Signature E4 is unique in ESCC linked to alcohol intake and genetic variants in alcohol-metabolizing enzymes. We discover significantly recurrent mutations in 20 protein-coding genes, 4 long non-coding RNAs and 10 untranslational regions. Functional analyses show six genes that have recurrent copy-number variants in three squamous-cell carcinomas (oesophageal, head and neck and lung) significantly promote cancer cell proliferation, migration and invasion. The most frequently affected genes by structural variation are LRP1B and TTC28. The aberrant cell cycle and PI3K-AKT pathways seem critical in ESCC. These results establish a comprehensive genomic landscape of ESCC and provide potential targets for precision treatment and prevention of the cancer.
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47
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Kashima D, Kawade R, Nagamune T, Kawahara M. A Chemically Inducible Helper Module for Detecting Protein–Protein Interactions with Tunable Sensitivity Based on KIPPIS. Anal Chem 2017; 89:4824-4830. [DOI: 10.1021/acs.analchem.6b04063] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Daiki Kashima
- Department of Chemistry and
Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Raiji Kawade
- Department of Chemistry and
Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Teruyuki Nagamune
- Department of Chemistry and
Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Masahiro Kawahara
- Department of Chemistry and
Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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48
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Reconstruction and signal propagation analysis of the Syk signaling network in breast cancer cells. PLoS Comput Biol 2017; 13:e1005432. [PMID: 28306714 PMCID: PMC5376343 DOI: 10.1371/journal.pcbi.1005432] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 03/31/2017] [Accepted: 02/20/2017] [Indexed: 11/19/2022] Open
Abstract
The ability to build in-depth cell signaling networks from vast experimental data is a key objective of computational biology. The spleen tyrosine kinase (Syk) protein, a well-characterized key player in immune cell signaling, was surprisingly first shown by our group to exhibit an onco-suppressive function in mammary epithelial cells and corroborated by many other studies, but the molecular mechanisms of this function remain largely unsolved. Based on existing proteomic data, we report here the generation of an interaction-based network of signaling pathways controlled by Syk in breast cancer cells. Pathway enrichment of the Syk targets previously identified by quantitative phospho-proteomics indicated that Syk is engaged in cell adhesion, motility, growth and death. Using the components and interactions of these pathways, we bootstrapped the reconstruction of a comprehensive network covering Syk signaling in breast cancer cells. To generate in silico hypotheses on Syk signaling propagation, we developed a method allowing to rank paths between Syk and its targets. We first annotated the network according to experimental datasets. We then combined shortest path computation with random walk processes to estimate the importance of individual interactions and selected biologically relevant pathways in the network. Molecular and cell biology experiments allowed to distinguish candidate mechanisms that underlie the impact of Syk on the regulation of cortactin and ezrin, both involved in actin-mediated cell adhesion and motility. The Syk network was further completed with the results of our biological validation experiments. The resulting Syk signaling sub-networks can be explored via an online visualization platform.
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49
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Mathis AD, Naylor BC, Carson RH, Evans E, Harwell J, Knecht J, Hexem E, Peelor FF, Miller BF, Hamilton KL, Transtrum MK, Bikman BT, Price JC. Mechanisms of In Vivo Ribosome Maintenance Change in Response to Nutrient Signals. Mol Cell Proteomics 2016; 16:243-254. [PMID: 27932527 PMCID: PMC5294211 DOI: 10.1074/mcp.m116.063255] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 11/10/2016] [Indexed: 01/01/2023] Open
Abstract
Control of protein homeostasis is fundamental to the health and longevity of all organisms. Because the rate of protein synthesis by ribosomes is a central control point in this process, regulation, and maintenance of ribosome function could have amplified importance in the overall regulatory circuit. Indeed, ribosomal defects are commonly associated with loss of protein homeostasis, aging, and disease (1–4), whereas improved protein homeostasis, implying optimal ribosomal function, is associated with disease resistance and increased lifespan (5–7). To maintain a high-quality ribosome population within the cell, dysfunctional ribosomes are targeted for autophagic degradation. It is not known if complete degradation is the only mechanism for eukaryotic ribosome maintenance or if they might also be repaired by replacement of defective components. We used stable-isotope feeding and protein mass spectrometry to measure the kinetics of turnover of ribosomal RNA (rRNA) and 71 ribosomal proteins (r-proteins) in mice. The results indicate that exchange of individual proteins and whole ribosome degradation both contribute to ribosome maintenance in vivo. In general, peripheral r-proteins and those with more direct roles in peptide-bond formation are replaced multiple times during the lifespan of the assembled structure, presumably by exchange with a free cytoplasmic pool, whereas the majority of r-proteins are stably incorporated for the lifetime of the ribosome. Dietary signals impact the rates of both new ribosome assembly and component exchange. Signal-specific modulation of ribosomal repair and degradation could provide a mechanistic link in the frequently observed associations among diminished rates of protein synthesis, increased autophagy, and greater longevity (5, 6, 8, 9).
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Affiliation(s)
| | | | | | - Eric Evans
- From the ‡Department of Chemistry and Biochemistry
| | | | - Jared Knecht
- From the ‡Department of Chemistry and Biochemistry
| | - Eric Hexem
- From the ‡Department of Chemistry and Biochemistry
| | - Fredrick F Peelor
- §Department of Health and Exercise Science, Colorado State University, Fort Collins, Colorado 80523
| | - Benjamin F Miller
- §Department of Health and Exercise Science, Colorado State University, Fort Collins, Colorado 80523
| | - Karyn L Hamilton
- §Department of Health and Exercise Science, Colorado State University, Fort Collins, Colorado 80523
| | | | - Benjamin T Bikman
- ‖Department of Physiology and Developmental Biology, Brigham Young University, Provo, Utah 84602
| | - John C Price
- From the ‡Department of Chemistry and Biochemistry,
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Jin Z, Feng W, Ji Y, Jin L. Resveratrol mediates cell cycle arrest and cell death in human esophageal squamous cell carcinoma by directly targeting the EGFR signaling pathway. Oncol Lett 2016; 13:347-355. [PMID: 28123566 DOI: 10.3892/ol.2016.5391] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 08/25/2016] [Indexed: 12/11/2022] Open
Abstract
Resveratrol is a small polyphenol that has been intensively studied in a wide spectrum of therapeutic fields. More recently, resveratrol has been demonstrated to exert its antitumor activity in numerous tumor models. The present study reported that resveratrol exhibited a marked anti-proliferative effect on human esophageal squamous cell carcinoma (ESCC) cells by inducing cell cycle G0/G1 phase arrest and cell death, which was associated with a decrease in the expression levels of cyclin D1 and an increase in cleaved PARP/cleaved caspase-3 expression levels. The mechanisms underlying the antitumor potency of resveratrol were principally attributed to the downregulation of epidermal growth factor receptor (EGFR) signaling. The western blotting results showed that exposure of ESCC cells to resveratrol inhibited EGF-induced EGFR activation in addition to decreasing the total protein levels of EGFR and membrane/nuclear localization. In summary, the results suggested that resveratrol, or an associated analog, may have a role in the management of human ESCC.
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Affiliation(s)
- Zixuan Jin
- Department of Biochemistry, The High School Attached To Hunan Normal University, Changsha, Hunan 410006, P.R. China
| | - Wei Feng
- Department of Cardiothoracic Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Ying Ji
- Department of Cardiothoracic Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Longyu Jin
- Department of Cardiothoracic Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
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