1
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Chatterjee O, Jana J, Panda S, Dutta A, Sharma A, Saurav S, Motiani RK, Weisz K, Chatterjee S. Remodeling Ca 2+ dynamics by targeting a promising E-box containing G-quadruplex at ORAI1 promoter in triple-negative breast cancer. Cell Calcium 2024; 123:102944. [PMID: 39191092 PMCID: PMC7616398 DOI: 10.1016/j.ceca.2024.102944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 07/19/2024] [Accepted: 08/11/2024] [Indexed: 08/29/2024]
Abstract
ORAI1 is an intrinsic component of store-operated calcium entry (SOCE) that strictly regulates Ca2+ influx in most non-excitable cells. ORAI1 is overexpressed in a wide variety of cancers, and its signal transduction has been associated with chemotherapy resistance. There is extensive proteomic interaction of ORAI1 with other channels and effectors, resulting in various altered phenotypes. However, the transcription regulation of ORAI1 is not well understood. We have found a putative G-quadruplex (G4) motif, ORAI1-Pu, in the upstream promoter region of the gene, having regulatory functions. High-resolution 3-D NMR structure elucidation suggests that ORAI1-Pu is a stable parallel-stranded G4, having a long 8-nt loop imparting dynamics without affecting the structural stability. The protruded loop further houses an E-box motif that provides a docking site for transcription factors like Zeb1. The G4 structure was also endogenously observed using Chromatin Immunoprecipitation (ChIP) with anti-G4 antibody (BG4) in the MDA-MB-231 cell line overexpressing ORAI1. Ligand-mediated stabilization suggested that the stabilized G4 represses transcription in cancer cell line MDA-MB-231. Downregulation of transcription further led to decreased Ca2+ entry by the SOCE pathway, as observed by live-cell Fura-2 Ca2+ imaging.
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Affiliation(s)
- Oishika Chatterjee
- Department of Biological Sciences, Bose Institute, EN-80 Sector V, Salt Lake, Unified Campus, Kolkata 700091, India
| | - Jagannath Jana
- Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Str. 4, D-17489 Greifswald, Germany
| | - Suman Panda
- Department of Biological Sciences, Bose Institute, EN-80 Sector V, Salt Lake, Unified Campus, Kolkata 700091, India
| | - Anindya Dutta
- Department of Biological Sciences, Bose Institute, EN-80 Sector V, Salt Lake, Unified Campus, Kolkata 700091, India
| | - Akshay Sharma
- Laboratory of Calciomics and Systemic Pathophysiology (LCSP), Regional Centre for Biotechnology (RCB), Faridabad 121001, Delhi NCR, India
| | - Suman Saurav
- Laboratory of Calciomics and Systemic Pathophysiology (LCSP), Regional Centre for Biotechnology (RCB), Faridabad 121001, Delhi NCR, India
| | - Rajender K Motiani
- Laboratory of Calciomics and Systemic Pathophysiology (LCSP), Regional Centre for Biotechnology (RCB), Faridabad 121001, Delhi NCR, India
| | - Klaus Weisz
- Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Str. 4, D-17489 Greifswald, Germany
| | - Subhrangsu Chatterjee
- Department of Biological Sciences, Bose Institute, EN-80 Sector V, Salt Lake, Unified Campus, Kolkata 700091, India.
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2
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Reeve HK, Pfennig DW. Evolution of transmissible cancers: An adaptive, plastic strategy of selfish genetic elements? iScience 2024; 27:110740. [PMID: 39286496 PMCID: PMC11402641 DOI: 10.1016/j.isci.2024.110740] [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] [Indexed: 09/19/2024] Open
Abstract
A growing number of studies have applied evolutionary and ecological principles to understanding cancer. However, few such studies have examined whether phenotypic plasticity--the ability of a single individual or genome to respond differently to different environmental circumstances--can impact the origin and spread of cancer. Here, we propose the adaptive horizontal transmission hypothesis to explain how flexible decision-making by selfish genetic elements can cause them to spread from the genome of their original host into the genomes of other hosts through the evolution of transmissible cancers. Specifically, we hypothesize that such cancers appear when the likelihood of successful vertical transmission is sufficiently low relative to the likelihood of successful horizontal transmission. We develop an evolutionary optimization model of this hypothesis, highlight empirical findings that support it, and offer suggestions for future research. Generally, phenotypically plastic selfish genetic elements might play an important role in the evolution of transmissible cancers.
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Affiliation(s)
- Hudson Kern Reeve
- Department of Neurobiology and Behavior, Seeley G. Mudd Hall, Cornell University, Ithaca, NY 14853, USA
| | - David W Pfennig
- Department of Biology, CB#3280, Coker Hall, University of North Carolina, Chapel Hill, NC 27599-3280, USA
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3
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Ghorbani R, Gharbavi M, Keshavarz B, Madanchi H, Johari B. Targeting c-Myc with decoy oligodeoxynucleotide-loaded polycationic nanoparticles inhibits cell growth and induces apoptosis in cancer stem-like cells (NTERA-2). Mol Biol Rep 2024; 51:623. [PMID: 38710891 DOI: 10.1007/s11033-024-09559-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Accepted: 04/16/2024] [Indexed: 05/08/2024]
Abstract
BACKGROUND An increase in cancer stem cell (CSC) populations and their resistance to common treatments could be a result of c-Myc dysregulations in certain cancer cells. In the current study, we investigated anticancer effects of c-Myc decoy ODNs loaded-poly (methacrylic acid-co-diallyl dimethyl ammonium chloride) (PMA-DDA)-coated silica nanoparticles as carriers on cancer-like stem cells (NTERA-2). METHODS AND RESULTS The physicochemical characteristics of the synthesized nanocomposites (SiO2@PMA-DDA-DEC) were analyzed using FT-IR, DLS, and SEM techniques. UV-Vis spectrophotometer was applied to analyze the release pattern of decoy ODNs from the nanocomposite. Furthermore, uptake, cell viability, apoptosis, and cell cycle assays were used to investigate the anticancer effects of nanocomposites loaded with c-Myc decoy ODNs on NTERA-2 cancer cells. The results of physicochemical analytics demonstrated that SiO2@PMA-DDA-DEC nanocomposites were successfully synthesized. The prepared nanocomposites were taken up by NTERA-2 cells with high efficiency, and could effectively inhibit cell growth and increase apoptosis rate in the treated cells compared to the control group. Moreover, SiO2@PMA-DDA nanocomposites loaded with c-Myc decoy ODNs induced cell cycle arrest at the G0/G1 phase in the treated cells. CONCLUSIONS The conclusion drawn from this study is that c-Myc decoy ODN-loaded SiO2@PMA-DDA nanocomposites can effectively inhibit cell growth and induce apoptosis in NTERA-2 cancer cells. Moreover, given that a metal core is incorporated into this synthetic nanocomposite, it could potentially be used in conjunction with irradiation as part of a decoy-radiotherapy combinational therapy in future investigations.
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Affiliation(s)
- Roghayeh Ghorbani
- Department of Medical Biotechnology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
- Student Research Committee, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mahmoud Gharbavi
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Pain Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Benyamin Keshavarz
- Student Research Committee, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Hamid Madanchi
- Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran.
- Department of Medical Biotechnology, School of Medicine, Semnan University of Medical Sciences, Semnan, 35131-38111, Iran.
- Drug Design and Bioinformatics Unit, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, 13198, Iran.
| | - Behrooz Johari
- Department of Medical Biotechnology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
- Zanjan Pharmaceutical Biotechnology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran.
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4
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Bednarska-Szczepaniak K, Ebenryter-Olbińska K, Gajek G, Śmiałkowski K, Suwara J, Fiedorowicz L, Leśnikowski Z. Synthesis of DNA-Boron Cluster Composites and Assembly into Functional Nanoparticles with Dual, Anti-EGFR, and Anti-c-MYC Oncogene Silencing Activity. Chemistry 2024; 30:e202303531. [PMID: 38214885 DOI: 10.1002/chem.202303531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/14/2023] [Accepted: 01/08/2024] [Indexed: 01/13/2024]
Abstract
A versatile method for the automated synthesis of composites containing DNA-oligonucleotides and boron cluster scaffolds and their assembly into functional nanoparticles is described. The obtained, torus-like nanoparticles carry antisense oligonucleotides that target two different oncogenes simultaneously. The nanoparticles exhibited notable silencing efficiency in vitro in a pancreatic carcinoma cell line PANC-1 toward EGFR and c-Myc genes at the mRNA level, and a significant efficiency at the protein level. The proposed approach may be an attractive alternative to methods currently used, including one therapeutic nucleic acid, one genetic target, or the use of cocktails of therapeutic nucleic acids.
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Affiliation(s)
- Katarzyna Bednarska-Szczepaniak
- Laboratory of Medicinal Chemistry, Institute of Medical Biology, Polish Academy of Sciences, Lodowa Łódź, 106, 92-232, Lodz, Poland
| | - Katarzyna Ebenryter-Olbińska
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza, Łódź, 112, 90-363 Lodz, Poland
| | - Gabriela Gajek
- Laboratory of Immunobiology of Infections, Institute of Medical Biology, Polish Academy of Sciences, Lodowa Łódź, 106, 92-232, Lodz, Poland
| | - Krzysztof Śmiałkowski
- Laboratory of Medicinal Chemistry, Institute of Medical Biology, Polish Academy of Sciences, Lodowa Łódź, 106, 92-232, Lodz, Poland
- Lodz Institutes of the Polish Academy of Science, The Bio-Med-Chem Doctoral School, University of Lodz, Poland
| | - Justyna Suwara
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza, Łódź, 112, 90-363 Lodz, Poland
| | - Lidia Fiedorowicz
- Laboratory of Mycobacterium Genetics and Physiology, Institute of Medical Biology Polish Academy of Sciences, Lodowa Łódź, 106, 92-232, Lodz, Poland
- Lodz Institutes of the Polish Academy of Science, The Bio-Med-Chem Doctoral School, University of Lodz, Poland
| | - Zbigniew Leśnikowski
- Laboratory of Medicinal Chemistry, Institute of Medical Biology, Polish Academy of Sciences, Lodowa Łódź, 106, 92-232, Lodz, Poland
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5
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Tokugawa M, Inoue Y, Aoki H, Miyajima C, Ishiuchi K, Tsurumi K, Kujirai C, Morishita D, Matsuno M, Mizukami H, Ri M, Iida S, Makino T, Aoyama M, Hayashi H. Involvement of cardiac glycosides targeting Na/K-ATPase in their inhibitory effects on c-Myc expression via its transcription, translation and proteasomal degradation. J Biochem 2024; 175:253-263. [PMID: 37948630 DOI: 10.1093/jb/mvad085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 11/12/2023] Open
Abstract
Cardiac glycosides (CGs) have been used for decades to treat heart failure and arrhythmic diseases. Recent non-clinical and epidemiological findings have suggested that CGs exhibit anti-tumor activities. Therefore, CGs may be repositioned as drugs for the treatment of cancer. A detailed understanding of the anti-cancer mechanisms of CGs is essential for their application to the treatment of targetable cancer types. To elucidate the factors associated with the anti-tumor effects of CGs, we performed transcriptome profiling on human multiple myeloma AMO1 cells treated with periplocin, one of the CGs. Periplocin significantly down-regulated the transcription of MYC (c-Myc), a well-established oncogene. Periplocin also suppressed c-Myc expression at the protein levels. This repression of c-Myc was also observed in several cell lines. To identify target proteins for the inhibition of c-Myc, we generated CG-resistant (C9) cells using a sustained treatment with digoxin. We confirmed that C9 cells acquired resistance to the inhibition of c-Myc expression and cell proliferation by CGs. Moreover, the sequencing of genomic DNA in C9 cells revealed the mutation of D128N in α1-Na/K-ATPase, indicating the target protein. These results suggest that CGs suppress c-Myc expression in cancer cells via α1-Na/K-ATPase, which provides further support for the anti-tumor activities of CGs.
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Affiliation(s)
- Muneshige Tokugawa
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
| | - Yasumichi Inoue
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
| | - Hiromasa Aoki
- Department of Pathobiology, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
| | - Chiharu Miyajima
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
| | - Kan'ichiro Ishiuchi
- Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
| | - Kento Tsurumi
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
| | - Chisane Kujirai
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
| | - Daisuke Morishita
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
- Chordia Therapeutics Inc., 26-1 Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-0012, Japan
| | - Michiyo Matsuno
- Plant research section, The Kochi Prefectural Makino Botanical Garden, 4200-6 Godaiyama, Kochi 781-8125, Japan
| | - Hajime Mizukami
- Plant research section, The Kochi Prefectural Makino Botanical Garden, 4200-6 Godaiyama, Kochi 781-8125, Japan
| | - Masaki Ri
- Department of Hematology and Oncology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Shinsuke Iida
- Department of Hematology and Oncology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Toshiaki Makino
- Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
| | - Mineyoshi Aoyama
- Department of Pathobiology, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
| | - Hidetoshi Hayashi
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
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6
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Di Marco CN, Terrell L, Sanchez R, Rueda L, Shuster L, Nartey EN, McHugh C, Mack JF, Shu A, Tian X, Medina JR, Rivero R, Manetsch R, Heerding D, Mangatt B. Design and synthesis of aminopyridine containing biaryls reducing c-MYC protein levels in cells. Bioorg Med Chem Lett 2023; 92:129385. [PMID: 37339719 DOI: 10.1016/j.bmcl.2023.129385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 06/16/2023] [Indexed: 06/22/2023]
Abstract
The c-MYC oncogene transcription factor has been implicated in cell cycle regulation controlling cell growth and proliferation. It is tightly regulated in normal cells, but has been shown to be deregulated in cancer cells, and is thus an attractive target for oncogenic therapies. Building upon previous SAR, a series of analogues containing benzimidazole core replacements were prepared and evaluated, leading to the identification of imidazopyridazine compounds that were shown to possess equivalent or improved c-MYC HTRF pEC50 values, lipophilicity, solubility, and rat pharmacokinetics. The imidazopyridazine core was therefore determined to be superior to the original benzimidazole core and a viable alternate for continued lead optimization and medicinal chemistry campaigns.
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Affiliation(s)
- Christina N Di Marco
- Medicinal Science and Technology, GSK, Collegeville, PA 19426, USA; Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA.
| | - Lamont Terrell
- Medicinal Science and Technology, GSK, Collegeville, PA 19426, USA
| | - Robert Sanchez
- Medicinal Science and Technology, GSK, Collegeville, PA 19426, USA
| | - Lourdes Rueda
- Medicinal Science and Technology, GSK, Collegeville, PA 19426, USA
| | - Leanna Shuster
- Medicinal Science and Technology, GSK, Collegeville, PA 19426, USA
| | | | - Charles McHugh
- Drug Metabolism and Pharmacokinetics, Research In Vivo/In Vitro Translation, GSK, Collegeville, PA 19426, USA
| | - James F Mack
- Medicinal Science and Technology, GSK, Collegeville, PA 19426, USA
| | - Arthur Shu
- Medicinal Science and Technology, GSK, Collegeville, PA 19426, USA
| | - Xinrong Tian
- Medicinal Science and Technology, GSK, Collegeville, PA 19426, USA
| | - Jesus R Medina
- Medicinal Science and Technology, GSK, Collegeville, PA 19426, USA
| | - Ralph Rivero
- Medicinal Science and Technology, GSK, Collegeville, PA 19426, USA
| | - Roman Manetsch
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA; Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA; Center for Drug Discovery, Northeastern University, Boston, MA 02115, USA; Barnett Institute of Chemical and Biological Analysis, Northeastern University, Boston, MA 02115, USA
| | - Dirk Heerding
- Medicinal Science and Technology, GSK, Collegeville, PA 19426, USA
| | - Biju Mangatt
- Medicinal Science and Technology, GSK, Collegeville, PA 19426, USA
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7
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Kim C, Cnaani A, Kültz D. Removal of evolutionarily conserved functional MYC domains in a tilapia cell line using a vector-based CRISPR/Cas9 system. Sci Rep 2023; 13:12086. [PMID: 37495710 PMCID: PMC10371998 DOI: 10.1038/s41598-023-37928-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 06/29/2023] [Indexed: 07/28/2023] Open
Abstract
MYC transcription factors have critical roles in facilitating a variety of cellular functions that have been highly conserved among species during evolution. However, despite circumstantial evidence for an involvement of MYC in animal osmoregulation, mechanistic links between MYC function and osmoregulation are missing. Mozambique tilapia (Oreochromis mossambicus) represents an excellent model system to study these links because it is highly euryhaline and highly tolerant to osmotic (salinity) stress at both the whole organism and cellular levels of biological organization. Here, we utilize an O. mossambicus brain cell line and an optimized vector-based CRISPR/Cas9 system to functionally disrupt MYC in the tilapia genome and to establish causal links between MYC and cell functions, including cellular osmoregulation. A cell isolation and dilution strategy yielded polyclonal myca (a gene encoding MYC) knockout (ko) cell pools with low genetic variability and high gene editing efficiencies (as high as 98.2%). Subsequent isolation and dilution of cells from these pools produced a myca ko cell line harboring a 1-bp deletion that caused a frameshift mutation. This frameshift functionally inactivated the transcriptional regulatory and DNA-binding domains predicted by bioinformatics and structural analyses. Both the polyclonal and monoclonal myca ko cell lines were viable, propagated well in standard medium, and differed from wild-type cells in morphology. As such, they represent a new tool for causally linking myca to cellular osmoregulation and other cell functions.
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Affiliation(s)
- Chanhee Kim
- Department of Animal Sciences, University of California, Davis, CA, 95616, USA
| | - Avner Cnaani
- Department of Poultry and Aquaculture, Institute of Animal Sciences, Agricultural Research Organization, Volcani Center, 7528809, Rishon LeZion, Israel
| | - Dietmar Kültz
- Department of Animal Sciences, University of California, Davis, CA, 95616, USA.
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8
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Zhan X, Liu Y, Jannu AJ, Huang S, Ye B, Wei W, Pandya PH, Ye X, Pollok KE, Renbarger JL, Huang K, Zhang J. Identify potential driver genes for PAX-FOXO1 fusion-negative rhabdomyosarcoma through frequent gene co-expression network mining. Front Oncol 2023; 13:1080989. [PMID: 36793601 PMCID: PMC9924292 DOI: 10.3389/fonc.2023.1080989] [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: 10/26/2022] [Accepted: 01/12/2023] [Indexed: 02/03/2023] Open
Abstract
Background Rhabdomyosarcoma (RMS) is a soft tissue sarcoma usually originated from skeletal muscle. Currently, RMS classification based on PAX-FOXO1 fusion is widely adopted. However, compared to relatively clear understanding of the tumorigenesis in the fusion-positive RMS, little is known for that in fusion-negative RMS (FN-RMS). Methods We explored the molecular mechanisms and the driver genes of FN-RMS through frequent gene co-expression network mining (fGCN), differential copy number (CN) and differential expression analyses on multiple RMS transcriptomic datasets. Results We obtained 50 fGCN modules, among which five are differentially expressed between different fusion status. A closer look showed 23% of Module 2 genes are concentrated on several cytobands of chromosome 8. Upstream regulators such as MYC, YAP1, TWIST1 were identified for the fGCN modules. Using in a separate dataset we confirmed that, comparing to FP-RMS, 59 Module 2 genes show consistent CN amplification and mRNA overexpression, among which 28 are on the identified chr8 cytobands. Such CN amplification and nearby MYC (also resides on one of the above cytobands) and other upstream regulators (YAP1, TWIST1) may work together to drive FN-RMS tumorigenesis and progression. Up to 43.1% downstream targets of Yap1 and 45.8% of the targets of Myc are differentially expressed in FN-RMS vs. normal comparisons, which also confirmed the driving force of these regulators. Discussion We discovered that copy number amplification of specific cytobands on chr8 and the upstream regulators MYC, YAP1 and TWIST1 work together to affect the downstream gene co-expression and promote FN-RMS tumorigenesis and progression. Our findings provide new insights for FN-RMS tumorigenesis and offer promising targets for precision therapy. Experimental investigation about the functions of identified potential drivers in FN-RMS are in progress.
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Affiliation(s)
- Xiaohui Zhan
- Department of Bioinformatics, School of Basic Medicine, Chongqing Medical University, Chongqing, China
| | - Yusong Liu
- College of Intelligent Systems Science and Engineering, Harbin Engineering University, Harbin, China
| | - Asha Jacob Jannu
- Department of Biostatistics and Health Data Science, Indiana University, School of Medicine, Indianapolis, IN, United States
| | | | - Bo Ye
- Department of Bioinformatics, School of Basic Medicine, Chongqing Medical University, Chongqing, China
| | - Wei Wei
- Department of Bioinformatics, School of Basic Medicine, Chongqing Medical University, Chongqing, China
| | - Pankita H Pandya
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, IN, United States
| | - Xiufen Ye
- College of Intelligent Systems Science and Engineering, Harbin Engineering University, Harbin, China
| | - Karen E Pollok
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, IN, United States
| | - Jamie L Renbarger
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, IN, United States
| | - Kun Huang
- Department of Biostatistics and Health Data Science, Indiana University, School of Medicine, Indianapolis, IN, United States
| | - Jie Zhang
- Department of Medical and Molecular Genetics, Indiana University, School of Medicine, Indianapolis, IN, United States
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9
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Friesen A, Fritsch-Decker S, Mülhopt S, Quarz C, Mahl J, Baumann W, Hauser M, Wexler M, Schlager C, Gutmann B, Krebs T, Goßmann AK, Weis F, Hufnagel M, Stapf D, Hartwig A, Weiss C. Comparing the Toxicological Responses of Pulmonary Air-Liquid Interface Models upon Exposure to Differentially Treated Carbon Fibers. Int J Mol Sci 2023; 24:ijms24031927. [PMID: 36768249 PMCID: PMC9915385 DOI: 10.3390/ijms24031927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/12/2023] [Accepted: 01/13/2023] [Indexed: 01/20/2023] Open
Abstract
In recent years, the use of carbon fibers (CFs) in various sectors of industry has been increasing. Despite the similarity of CF degradation products to other toxicologically relevant materials such as asbestos fibers and carbon nanotubes, a detailed toxicological evaluation of this class of material has yet to be performed. In this work, we exposed advanced air-liquid interface cell culture models of the human lung to CF. To simulate different stresses applied to CF throughout their life cycle, they were either mechanically (mCF) or thermo-mechanically pre-treated (tmCF). Different aspects of inhalation toxicity as well as their possible time-dependency were monitored. mCFs were found to induce a moderate inflammatory response, whereas tmCF elicited stronger inflammatory as well as apoptotic effects. Furthermore, thermal treatment changed the surface properties of the CF resulting in a presumed adhesion of the cells to the fiber fragments and subsequent cell loss. Triple-cultures encompassing epithelial, macrophage, and fibroblast cells stood out with an exceptionally high inflammatory response. Only a weak genotoxic effect was detected in the form of DNA strand breaks in mono- and co-cultures, with triple-cultures presenting a possible secondary genotoxicity. This work establishes CF fragments as a potentially harmful material and emphasizes the necessity of further toxicological assessment of existing and upcoming advanced CF-containing materials.
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Affiliation(s)
- Alexandra Friesen
- Karlsruhe Institute of Technology (KIT), Institute of Applied Biosciences, Department of Food Chemistry and Toxicology, 76131 Karlsruhe, Germany
| | - Susanne Fritsch-Decker
- Karlsruhe Institute of Technology (KIT), Institute of Biological and Chemical Systems, Biological Information Processing, 76344 Eggenstein-Leopoldshafen, Germany
| | - Sonja Mülhopt
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry, 76344 Eggenstein-Leopoldshafen, Germany
| | - Caroline Quarz
- Karlsruhe Institute of Technology (KIT), Institute of Applied Biosciences, Department of Food Chemistry and Toxicology, 76131 Karlsruhe, Germany
| | - Jonathan Mahl
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry, 76344 Eggenstein-Leopoldshafen, Germany
| | - Werner Baumann
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry, 76344 Eggenstein-Leopoldshafen, Germany
| | - Manuela Hauser
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry, 76344 Eggenstein-Leopoldshafen, Germany
| | - Manuela Wexler
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry, 76344 Eggenstein-Leopoldshafen, Germany
| | | | | | - Tobias Krebs
- Vitrocell Systems GmbH, 79183 Waldkirch, Germany
| | | | | | - Matthias Hufnagel
- Karlsruhe Institute of Technology (KIT), Institute of Applied Biosciences, Department of Food Chemistry and Toxicology, 76131 Karlsruhe, Germany
| | - Dieter Stapf
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry, 76344 Eggenstein-Leopoldshafen, Germany
| | - Andrea Hartwig
- Karlsruhe Institute of Technology (KIT), Institute of Applied Biosciences, Department of Food Chemistry and Toxicology, 76131 Karlsruhe, Germany
- Correspondence: (A.H.); (C.W.)
| | - Carsten Weiss
- Karlsruhe Institute of Technology (KIT), Institute of Biological and Chemical Systems, Biological Information Processing, 76344 Eggenstein-Leopoldshafen, Germany
- Correspondence: (A.H.); (C.W.)
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10
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Fan G, Liu J, Wu Z, Li C, Zhang Y. Development and validation of the prognostic model based on autophagy-associated genes in idiopathic pulmonary fibrosis. Front Immunol 2022; 13:1049361. [PMID: 36578501 PMCID: PMC9791216 DOI: 10.3389/fimmu.2022.1049361] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 11/28/2022] [Indexed: 12/14/2022] Open
Abstract
Background Idiopathic pulmonary fibrosis (IPF) is a chronic progressive interstitial lung disease. Many studies suggest that autophagy may be related to disease progression and prognosis in IPF. However, the mechanisms involved have not been fully elucidated. Methods We incorporated 232 autophagy-associated genes (AAGs) and two datasets, GSE28042 and GSE27957, from the GEO database. Univariate Cox analysis and least absolute shrinkage and selection operator (LASSO) regression were used to construct the autophagy-associated prognostic model. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed to investigate the functions of these autophagy-associated genes. CIBERSORT algorithm was used to calculate the immune cell infiltration between patients in the high-risk score and low-risk score groups. Quantitative Real-Time Polymerase Chain Reaction (qRT-PCR) was performed to explore the mRNA expression of five genes in the autophagy-associated risk model. Results We constructed a 5-autophagy-associated genes signature based on Univariate Cox analysis and LASSO regression. In our autophagy-associated risk model, IPF patients in the high-risk group demonstrated a poor overall survival rate compared to patients in the low-risk group. For 1-, 2-, and 3-year survival rates, the AUC predictive value of the AAG signature was 0.670, 0.787, and 0.864, respectively. These results were validated in the GSE27957 cohort, confirming the good prognostic effect of our model. GO and KEGG pathway analyses enriched immune-related pathways between the high-risk and low-risk groups. And there was also a significant difference in immune cell infiltration between two groups. And the results of qRT-PCR showed that the expression levels of FOXO1, IRGM, MYC, and PRKCQ were significantly decreased in the Peripheral Blood Mononuclear Cell (PBMC) of IPF patient samples. Conclusion Our study constructed and validated an autophagy-associated risk model based on MYC, MAPK1, IRGM, PRKCQ, and FOXO1. And those five genes may influence the progression of IPF by regulating immune responses and immune cells.
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Affiliation(s)
- Guoqing Fan
- Department of Respiratory Medicine and Critical Care, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China,Graduate School of Peking Union Medical College, Beijing, China
| | - Jingjing Liu
- Department of Respiratory and Critical Care Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Zhen Wu
- Department of Respiratory & Critical Care Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Caiyu Li
- Department of Respiratory & Critical Care Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Ying Zhang
- Department of Respiratory & Critical Care Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China,*Correspondence: Ying Zhang,
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11
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Rizzuti B, Iovanna JL, Neira JL. Deciphering the Binding of the Nuclear Localization Sequence of Myc Protein to the Nuclear Carrier Importin α3. Int J Mol Sci 2022; 23:ijms232315333. [PMID: 36499669 PMCID: PMC9739371 DOI: 10.3390/ijms232315333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 11/29/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
The oncoprotein Myc is a transcription factor regulating global gene expression and modulating cell proliferation, apoptosis, and metabolism. Myc has a nuclear localization sequence (NLS) comprising residues Pro320 to Asp328, to allow for nuclear translocation. We designed a peptide comprising such region and the flanking residues (Ala310-Asn339), NLS-Myc, to study, in vitro and in silico, the ability to bind importin α3 (Impα3) and its truncated species (ΔImpα3) depleted of the importin binding domain (IBB), by using fluorescence, circular dichroism (CD), biolayer interferometry (BLI), nuclear magnetic resonance (NMR), and molecular simulations. NLS-Myc interacted with both importin species, with affinity constants of ~0.5 µM (for Impα3) and ~60 nM (for ΔImpα3), as measured by BLI. The molecular simulations predicted that the anchoring of NLS-Myc took place in the major binding site of Impα3 for the NLS of cargo proteins. Besides clarifying the conformational behavior of the isolated NLS of Myc in solution, our results identified some unique properties in the binding of this localization sequence to the nuclear carrier Impα3, such as a difference in the kinetics of its release mechanism depending on the presence or absence of the IBB domain.
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Affiliation(s)
- Bruno Rizzuti
- CNR-NANOTEC, SS Rende (CS), Department of Physics, University of Calabria, 87036 Rende, Italy
- Instituto de Biocomputación y Física de Sistemas Complejos–Unidad Mixta GBsC-CSIC-BIFI, Universidad de Zaragoza, 50018 Zaragoza, Spain
- Correspondence: (B.R.); (J.L.N.)
| | - Juan L. Iovanna
- Centre de Recherche en Cancérologie de Marseille (CRCM), INSERM U1068, CNRS UMR 7258, Institut Paoli-Calmettes, Aix-Marseille Université, 13288 Marseille, France
| | - José L. Neira
- Instituto de Biocomputación y Física de Sistemas Complejos–Unidad Mixta GBsC-CSIC-BIFI, Universidad de Zaragoza, 50018 Zaragoza, Spain
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDIBE), Universidad Miguel Hernández, 03202 Elche, Spain
- Correspondence: (B.R.); (J.L.N.)
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12
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Liu Z, Xu R, Zhang H, Wang D, Wang J, Wu K. A unique 15-bp InDel in the first intron of BMPR1B regulates its expression in Taihu pigs. BMC Genomics 2022; 23:799. [PMID: 36463109 PMCID: PMC9719134 DOI: 10.1186/s12864-022-08988-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 11/03/2022] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND BMPR1B (Bone morphogenetic protein receptor type-1B) is a receptor in the bone morphogenetic protein (BMP) family and has been identified as a candidate gene for reproductive traits in pigs. Our previous study in Taihu pigs found a specific estrogen response element (ERE) in the first intron of the BMPR1B gene that is associated with the number born alive trait. However, little is known about the mechanism by which the ERE regulates the expression of BMPR1B in the endometrium. RESULTS Here, a 15-bp InDel (insertion/deletion) (AGCCAGAAAGGAGGA) was identified as a unique variation in Taihu pigs, and was shown to be responsible for the binding of the type I receptor of estrogen (ESR1) to the ERE using dual-luciferase assays. Four BMPR1B transcripts (T1, T2, T3, and T4) were identified by 5' RACE in endometrial tissue. Expression of T3 and T4 in the endometrium of Meishan pigs was significantly higher than in Duroc pigs during pregnancy. Luciferase assays showed that three distinct BMPR1B promoters may drive expression of T1, T3, and T4. Interestingly, ERE-mediated enhancement of T4 promoter activity significantly increased expression of Transcript T4 in the endometrium of Taihu pigs (P < 0.05). In contrast, the ERE inhibited activity of the T3 promoter and decreased expression of the T3 transcript in the Duroc background (P < 0.05). In summary, we identified a 15-bp InDel in the Taihu ERE that can be used as a molecular marker for the number born alive trait, characterized the 5' untranslated regions (UTRs) of BMPR1B transcripts in the endometrium, and determined how the transcripts are processed by alternative splicing events. CONCLUSIONS Our results provide a foundation for understanding the transcriptional regulation of BMPR1B and its contributions to the unique breeding prolificacy characteristics of Taihu pigs.
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Affiliation(s)
- Zhexi Liu
- grid.22935.3f0000 0004 0530 8290Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China ,grid.22935.3f0000 0004 0530 8290Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Ran Xu
- grid.22935.3f0000 0004 0530 8290Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China ,grid.22935.3f0000 0004 0530 8290Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Han Zhang
- grid.22935.3f0000 0004 0530 8290Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China ,grid.22935.3f0000 0004 0530 8290Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Depeng Wang
- grid.22935.3f0000 0004 0530 8290Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China ,grid.22935.3f0000 0004 0530 8290Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Ji Wang
- grid.22935.3f0000 0004 0530 8290Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China ,grid.22935.3f0000 0004 0530 8290Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Keliang Wu
- grid.22935.3f0000 0004 0530 8290Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China ,grid.22935.3f0000 0004 0530 8290Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, China
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13
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Chen GS, Chen SY, Liu ST, Hsieh CC, Lee SP, Huang SM. Stabilization of the c-Myc Protein via the Modulation of Threonine 58 and Serine 62 Phosphorylation by the Disulfiram/Copper Complex in Oral Cancer Cells. Int J Mol Sci 2022; 23:ijms23169137. [PMID: 36012403 PMCID: PMC9409128 DOI: 10.3390/ijms23169137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/09/2022] [Accepted: 08/12/2022] [Indexed: 11/16/2022] Open
Abstract
MYC has a short half-life that is tightly regulated through phosphorylation and proteasomal degradation. Many studies have claimed that treatment with disulfiram (DSF) with or without copper ions can cause cancer cell death in a reactive oxygen species (ROS)-dependent manner in cancer cells. Our previous study showed that the levels of c-Myc protein and the phosphorylation of threonine 58 (T58) and serine 62 (S62) increased in DSF-Cu-complex-treated oral epidermoid carcinoma Meng-1 (OECM-1) cells. These abovementioned patterns were suppressed by pretreatment with an ROS scavenger, N-acetyl cysteine. The overexpression of c-Myc failed to induce hypoxia-inducible factor 1α protein expression, which was stabilized by the DSF-Cu complex. In this study, we further examined the regulatory mechanism behind the induction of the c-Myc of the DSF-Cu complex in an OECM-1 cell compared with a Smulow–Glickman (SG) human normal gingival epithelial cell. Our data showed that the downregulation of c-Myc truncated nick and p62 and the induction of the ratio of H3P/H3 and p-ERK/ERK might not be involved in the increase in the amount of c-Myc via the DSF/copper complexes in OECM-1 cells. Combined with the inhibitors for various signaling pathways and cycloheximde treatment, the increase in the amount of c-Myc with the DSF/copper complexes might be mediated through the increase in the stabilities of c-Myc (T58) and c-Myc (S62) proteins in OECM-1 cells. In SG cells, only the c-Myc (T58) protein was stabilized by the DSF-Cu (I and II) complexes. Hence, our findings could provide novel regulatory insights into the phosphorylation-dependent stability of c-Myc in DSF/copper-complex-treated oral squamous cell carcinoma.
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Affiliation(s)
- Gunng-Shinng Chen
- School of Dentistry, Department of Dentistry of Tri-Service General Hospital, National Defense Medical Center, Taipei City 114, Taiwan
| | - Ssu-Yu Chen
- Department of Biochemistry, National Defense Medical Center, Taipei City 114, Taiwan
| | - Shu-Ting Liu
- Department of Biochemistry, National Defense Medical Center, Taipei City 114, Taiwan
| | - Cheng-Chih Hsieh
- School of Pharmacy and Institute of Pharmacy, National Defense Medical Center, Taipei City 114, Taiwan
- Department of Pharmacy, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan
| | - Shiao-Pieng Lee
- School of Dentistry, Department of Dentistry of Tri-Service General Hospital, National Defense Medical Center, Taipei City 114, Taiwan
- Correspondence: (S.-P.L.); (S.-M.H.); Tel.: +886-2-87923100 (ext. 18790) (S.-M.H.)
| | - Shih-Ming Huang
- Department of Biochemistry, National Defense Medical Center, Taipei City 114, Taiwan
- Correspondence: (S.-P.L.); (S.-M.H.); Tel.: +886-2-87923100 (ext. 18790) (S.-M.H.)
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14
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Opposing effects of metformin mediated mTORC1 inhibition on IRES possessing anti-apoptotic proteins in breast cancer cell lines. Biochem Biophys Res Commun 2022; 629:71-77. [DOI: 10.1016/j.bbrc.2022.08.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 08/08/2022] [Accepted: 08/19/2022] [Indexed: 11/17/2022]
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15
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Gholami A, Farhadi K, Sayyadipour F, Soleimani M, Saba F. Long noncoding RNAs (lncRNAs) in human lymphomas. Genes Dis 2022; 9:900-914. [PMID: 35685474 PMCID: PMC9170579 DOI: 10.1016/j.gendis.2021.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 01/19/2021] [Accepted: 02/03/2021] [Indexed: 01/17/2023] Open
Abstract
Lymphomas are a diverse group of haematologic malignancies, which occur in infection-fighting cells of the lymphatic system. Long non-coding RNAs (lncRNAs) are non-coding RNAs, which have recently received significant attention as the main mediators of gene expression. In this review, we summarize the current knowledge on lncRNAs involved in lymphomas, their molecular functions, as well as their potential clinical value. Relevant literature was identified by a PubMed search of English language papers using the following terms: Lymphoma, LncRNA, leukemia, proliferation, apoptosis, and prognosis. LncRNAs are imperative for lymphoma carcinogenesis through affecting apoptosis, cell proliferation, invasion, and response to chemotherapy. The expression level of lncRNAs can affect chemotherapy-induced apoptosis. Taken together, lncRNA dysregulation in lymphoma cells is not only an epiphenomenon but also lncRNA transcription is critically related to the initiation and progression of lymphomas. Aberrant expression of lncRNAs can lead to the transformation of normal lymphocytes into lymphoma cells.
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Affiliation(s)
- Ali Gholami
- Clinical Research Development Center, Taleghani and Imam Ali Hospital, Kermanshah University of Medical Sciences, Kermanshah 671568-5420, Iran
| | - Khosro Farhadi
- Clinical Research Development Center, Taleghani and Imam Ali Hospital, Kermanshah University of Medical Sciences, Kermanshah 671568-5420, Iran
| | - Fatemeh Sayyadipour
- Clinical Research Development Center, Taleghani and Imam Ali Hospital, Kermanshah University of Medical Sciences, Kermanshah 671568-5420, Iran
| | - Masoud Soleimani
- Department of Haematology, Tarbiat Modares University, Tehran 146899-5513, Iran
| | - Fakhredin Saba
- Department of Medical Laboratory Science, School of Paramedical, Kermanshah University of Medical Sciences, Kermanshah 671568-5420, Iran
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16
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Colebatch AJ, Paver EC, Vergara IA, Thompson JF, Long GV, Wilmott JS, Scolyer RA. Elevated non-coding promoter mutations are associated with malignant transformation of melanocytic naevi to melanoma. Pathology 2022; 54:533-540. [DOI: 10.1016/j.pathol.2021.12.289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/22/2021] [Accepted: 12/02/2021] [Indexed: 10/19/2022]
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17
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Discovery of 1-(5-(1H-benzo[d]imidazole-2-yl)-2,4-dimethyl-1H-pyrrol-3-yl)ethan-1-one derivatives as novel and potent bromodomain and extra-terminal (BET) inhibitors with anticancer efficacy. Eur J Med Chem 2022; 227:113953. [PMID: 34731760 DOI: 10.1016/j.ejmech.2021.113953] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/14/2021] [Accepted: 10/25/2021] [Indexed: 12/29/2022]
Abstract
As epigenetic readers, bromodomain and extra-terminal domain (BET) family proteins bind to acetylated-lysine residues in histones and recruit protein complexes to promote transcription initiation and elongation. Inhibition of BET bromodomains by small molecule inhibitors has emerged as a promising therapeutic strategy for cancer. Herein, we describe our efforts toward the discovery of a novel series of 1-(5-(1H-benzo[d]imidazole-2-yl)-2,4-dimethyl-1H-pyrrol-3-yl)ethan-1-one derivatives as BET inhibitors. Intensive structural modifications led to the identification of compound 35f as the most active inhibitor of BET BRD4 with selectivity against BET family proteins. Further biological studies revealed that compound 35f can arrest the cell cycle in G0/G1 phase and induce apoptosis via decreasing the expression of c-Myc and other proteins related to cell cycle and apoptosis. More importantly, compound 35f showed favorable pharmacokinetic properties and antitumor efficacy in MV4-11 mouse xenograft model with acceptable tolerability. These results indicated that BET inhibitors could be potentially used to treat hematologic malignancies and some solid tumors.
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18
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Qi Y, Qadir MMF, Hastreiter AA, Fock RA, Machi JF, Morales AA, Wang Y, Meng Z, Rodrigues CO. Endothelial c-Myc knockout enhances diet-induced liver inflammation and fibrosis. FASEB J 2022; 36:e22077. [PMID: 34878671 PMCID: PMC11367571 DOI: 10.1096/fj.202101086r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 11/15/2021] [Accepted: 11/17/2021] [Indexed: 11/11/2022]
Abstract
Endothelial cells play an essential role in inflammation through synthesis and secretion of chemoattractant cytokines and expression of adhesion molecules required for inflammatory cell attachment and infiltration. The mechanisms by which endothelial cells control the pro-inflammatory response depend on the type of inflammatory stimuli, endothelial cell origin, and tissue involved. In the present study, we investigated the role of the transcription factor c-Myc in inflammation using a conditional knockout mouse model in which Myc is specifically deleted in the endothelium. At a systemic level, circulating monocytes, the chemokine CCL7, and the extracellular-matrix protein osteopontin were significantly increased in endothelial c-Myc knockout (EC-Myc KO) mice, whereas the cytokine TNFSF11 was downregulated. Using an experimental model of steatohepatitis, we investigated the involvement of endothelial c-Myc in diet-induced inflammation. EC-Myc KO animals displayed enhanced pro-inflammatory response, characterized by increased expression of pro-inflammatory cytokines and leukocyte infiltration, and worsened liver fibrosis. Transcriptome analysis identified enhanced expression of genes associated with inflammation, fibrosis, and hepatocellular carcinoma in EC-Myc KO mice relative to control (CT) animals after short-exposure to high-fat diet. Analysis of a single-cell RNA-sequencing dataset of human cirrhotic livers indicated downregulation of MYC in endothelial cells relative to healthy controls. In summary, our results suggest a protective role of endothelial c-Myc in diet-induced liver inflammation and fibrosis. Targeting c-Myc and its downstream pathways in the endothelium may constitute a potential strategy for the treatment of inflammatory disease.
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Affiliation(s)
- Yue Qi
- Department of Molecular and Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
- Interdisciplinary Stem Cell Institute, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
| | - Mirza M. F. Qadir
- Deming Department of Medicine, Section of Endocrinology and Metabolism, Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Araceli A. Hastreiter
- Interdisciplinary Stem Cell Institute, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
| | - Ricardo A. Fock
- Interdisciplinary Stem Cell Institute, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
| | - Jacqueline F. Machi
- Department of Molecular and Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
- Interdisciplinary Stem Cell Institute, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
| | - Alejo A. Morales
- Department of Molecular and Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
- Interdisciplinary Stem Cell Institute, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
| | - Ying Wang
- Department of Molecular and Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
- Sylvester Comprehensive Cancer Center, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
| | - Zhipeng Meng
- Department of Molecular and Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
- Sylvester Comprehensive Cancer Center, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
| | - Claudia O. Rodrigues
- Department of Molecular and Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
- Interdisciplinary Stem Cell Institute, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
- Sylvester Comprehensive Cancer Center, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
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Meisaprow P, Aksorn N, Vinayanuwattikun C, Chanvorachote P, Sukprasansap M. Caffeine Induces G0/G1 Cell Cycle Arrest and Inhibits Migration through Integrin αv, β3, and FAK/Akt/c-Myc Signaling Pathway. Molecules 2021; 26:7659. [PMID: 34946741 PMCID: PMC8706725 DOI: 10.3390/molecules26247659] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 12/12/2022] Open
Abstract
Lung cancer is recognized as a major cause of mortality worldwide owing to its metastatic activity. Given the lack of solid information regarding the possible effects of caffeine, one of the most consumed natural psychoactive substances, on molecular signaling pathways implicated in the aggressive behavior of lung cancer, our study aimed to evaluate the effect and mechanism of caffeine on metastasis-related mechanisms. The results revealed that caffeine treatment at concentrations of 0-500 µM caused no direct cytotoxic effects on NCI-H23 cells. Treatment of cells with caffeine showed good potential to inhibit cell proliferation at 48 h and induced significant cell cycle arrest at the G0/G1 phase. Concerning metastasis, caffeine was shown to reduce filopodia formation, inhibit migration and invasion capability, and reduce the ability of cancer cells to survive and grow in an anchorage-independent manner. Moreover, caffeine could attenuate the formation of 3D tumor spheroids in cancer stem cell (CSC)-enriched populations. With regard to mechanisms, we found that caffeine significantly altered the integrin pattern of the treated cells and caused the downregulation of metastasis-associated integrins, namely, integrins αv and β3. Subsequently, the downstream signals, including protein signaling and transcription factors, namely, phosphorylated focal adhesion kinase (p-FAK), phosphorylated protein kinase B (p-Akt), cell division cycle 42 (Cdc42), and c-Myc, were significantly decreased in caffeine-exposed cells. Taken together, our novel data on caffeine-inhibiting mechanism in relation to metastasis in lung cancer could provide insights into the impact of caffeine intake on human diseases and conditions.
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Affiliation(s)
- Pichitchai Meisaprow
- Graduate Student in Master of Science Program in Nutrition, Faculty of Medicine Ramathibodi Hospital and Institute of Nutrition, Mahidol University, Bangkok 10400, Thailand;
| | - Nithikoon Aksorn
- Department of Clinical Pathology, Faculty of Medicine Vajira Hospital, Navamindradhiraj University, Bangkok 10300, Thailand;
| | - Chanida Vinayanuwattikun
- Division of Medical Oncology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand;
| | - Pithi Chanvorachote
- Cell-Based Drug and Health Product Development Research Unit, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Monruedee Sukprasansap
- Food Toxicology Unit, Institute of Nutrition, Mahidol University, Salaya Campus, Nakhon Pathom 73170, Thailand
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20
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Jia Q, Xie B, Zhao Z, Huang L, Wei G, Ni T. Lung cancer cells expressing a shortened CDK16 3'UTR escape senescence through impaired miR-485-5p targeting. Mol Oncol 2021; 16:1347-1364. [PMID: 34687270 PMCID: PMC8936527 DOI: 10.1002/1878-0261.13125] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 09/27/2021] [Accepted: 10/21/2021] [Indexed: 12/13/2022] Open
Abstract
Inducing senescence in cancer cells is an emerging strategy for cancer therapy. The dysregulation and mutation of genes encoding cyclin‐dependent kinases (CDKs) have been implicated in various human cancers. However, whether CDK can induce cancer cell senescence remains poorly understood. We observed that CDK16 expression was high in multiple cancer types, including lung cancer, whereas various replicative senescence models displayed low CDK16 expression. CDK16 knockdown caused senescence‐associated phenotypes in lung cancer cell lines. Interestingly, the CDK16 3′ UTR was shortened in cancer and lengthened in senescence models, which was regulated by alternative polyadenylation (APA). The longer 3′UTR [using the distal polyA (pA) site] generated less protein than the shorter one (using the proximal pA site). Since microRNAs (miRNAs) usually bind to the 3′UTR of target genes to suppress their expression, we investigated whether miRNAs targeting the region between the shortened and longer 3′UTR are responsible for the reduced expression. We found that miR‐485‐5p targeted the 3′UTR between the distal and proximal pA site and caused senescence‐associated phenotypes by reducing protein production from the longer CDK16 transcript. Of note, CDK16 knockdown led to a reduced expression of MYC proto‐oncogene, bHLH transcription factor (MYC) and CD274 molecule (PD‐L1), which in turn enhanced the tumor‐suppressive effects of senescent cancer cells. The present study discovered that CDK16, whose expression is under the regulation of APA and miR‐485‐5p, is a potential target for prosenescence therapy for lung cancer.
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Affiliation(s)
- Qi Jia
- State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, Human Phenome Institute, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, China
| | - Baiyun Xie
- State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, Human Phenome Institute, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, China
| | - Zhaozhao Zhao
- State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, Human Phenome Institute, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, China
| | - Leihuan Huang
- State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, Human Phenome Institute, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, China
| | - Gang Wei
- State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, Human Phenome Institute, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, China
| | - Ting Ni
- State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, Human Phenome Institute, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, China
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21
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Chen S, He Z, Peng T, Zhou F, Wang G, Qian K, Ju L, Xiao Y, Wang X. PRR11 promotes ccRCC tumorigenesis by regulating E2F1 stability. JCI Insight 2021; 6:e145172. [PMID: 34499617 PMCID: PMC8525590 DOI: 10.1172/jci.insight.145172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 09/01/2021] [Indexed: 01/03/2023] Open
Abstract
Proline rich 11 (PRR11), a novel tumor-related gene, has been identified in different tumors. However, the relevant biological functions of PRR11 in human clear cell renal cell carcinoma (ccRCC) have not been studied. In this study, we first identified PRR11 as a biomarker of ccRCC and predictor of poor prognosis by bioinformatics. Then, we showed that PRR11 silencing substantially reduced ccRCC cell proliferation and migration in vitro and in vivo. Importantly, we found that PRR11 induced the degradation of the E2F1 protein through its interaction with E2F1, and PRR11 reduced the stability of the E2F1 protein in ccRCC cells, thereby affecting cell cycle progression. Further results indicated that the downregulation of E2F1 expression partially reversed the changes in ccRCC cell biology caused by PRR11 deletion. In addition, we showed that PRR11 was a target gene of c-Myc. The transcription factor c-Myc may have promoted the expression of PRR11 in ccRCC cells by binding to the PRR11 promoter region, thereby accelerating the progression of ccRCC. In summary, we found that PRR11 served as an oncogene in ccRCC, and PRR11 reduced the protein stability of E2F1 and could be activated by c-Myc.
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Affiliation(s)
| | | | | | | | - Gang Wang
- Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China.,Human Genetic Resource Preservation Center of Hubei Province, Wuhan, China.,Research Center of Wuhan for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, China.,Laboratory of Precision Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Kaiyu Qian
- Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China.,Human Genetic Resource Preservation Center of Hubei Province, Wuhan, China.,Research Center of Wuhan for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, China.,Laboratory of Precision Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Lingao Ju
- Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China.,Human Genetic Resource Preservation Center of Hubei Province, Wuhan, China.,Research Center of Wuhan for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, China.,Laboratory of Precision Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yu Xiao
- Department of Urology and.,Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China.,Human Genetic Resource Preservation Center of Hubei Province, Wuhan, China.,Research Center of Wuhan for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, China.,Laboratory of Precision Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xinghuan Wang
- Department of Urology and.,Research Center of Wuhan for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, China.,Medical Research Institute, Wuhan University, Wuhan, China
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22
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Lebok P, Schütt K, Kluth M, Witzel I, Wölber L, Paluchowski P, Terracciano L, Wilke C, Heilenkötter U, Müller V, Schmalfeldt B, Simon R, Sauter G, Von Leffern I, Krech T, Krech RH, Jacobsen F, Burandt E. High mitochondrial content is associated with breast cancer aggressiveness. Mol Clin Oncol 2021; 15:203. [PMID: 34462659 PMCID: PMC8375016 DOI: 10.3892/mco.2021.2365] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 06/23/2021] [Indexed: 12/16/2022] Open
Abstract
Mitochondria are relevant for cancer initiation and progression. Antibodies against mitochondrially encoded cytochrome c oxidase II (MTCO2), targeting a mitochondria specific epitope, can be used to quantitate the mitochondria content of tumor cells. The present study evaluated the impact of the cellular mitochondrial content on the prognosis of patients with breast cancer using immunohistochemical analysis on 2,197 arrayed breast cancer specimens. Results were compared with histological tumor parameters, patient overall survival, tumor cell proliferation using Ki67 labeling index (Ki67LI) and various other molecular features. Tumor cells exhibited stronger MTCO2 expression than normal breast epithelial cells. MTCO2 immunostaining was largely absent in normal breast epithelium, but was observed in 71.9% of 1,797 analyzable cancer specimens, including 34.6% tumors with weak expression, 22.3% with moderate expression and 15.0% with strong expression. High MTCO2 expression was significantly associated with advanced tumor stage, high Bloom-Richardson-Elston/Nottingham (BRE) grade, nodal metastasis and shorter overall survival (P<0.0001 each). In multivariate analysis, MTCO2 expression did not provide prognostic information independent of BRE grade, pathological tumor and pathological lymph node status. Additionally, significant associations were observed for high MTCO2 expression and various molecular features, including high Ki67LI, amplifications of HER2, MYC, CCND1 and MDM2, deletions of PTEN, 8p21 and 9p, low estrogen receptor expression (P<0.0001 each) and progesterone receptor expression (P<0.0001). The present study demonstrated that high MTCO2 expression was strongly associated with a poor prognosis and unfavorable phenotypical and molecular tumor features in patients with breast cancer. This suggests that the mitochondrial content may have a pivotal role in breast cancer progression.
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Affiliation(s)
- Patrick Lebok
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Katharina Schütt
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Martina Kluth
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Isabell Witzel
- Department of Gynecology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Linn Wölber
- Department of Gynecology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Peter Paluchowski
- Department of Gynecology, Regio Clinic Pinneberg, D-25421 Pinneberg, Germany
| | - Luigi Terracciano
- Department of Pathology, Basel University Clinics, 4031 Basel, Switzerland
| | - Christian Wilke
- Department of Gynecology, Regio Clinic Elmshorn, D-25337 Elmshorn, Germany
| | - Uwe Heilenkötter
- Department of Gynecology, Clinical Centre Itzehoe, D-25524 Itzehoe, Germany
| | - Volkmar Müller
- Department of Gynecology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Barbara Schmalfeldt
- Department of Gynecology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Ronald Simon
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Guido Sauter
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Ingo Von Leffern
- Department of Gynecology, Albertinen Clinic Schnelsen, D-22457 Hamburg, Germany
| | - Till Krech
- Institute of Pathology, Clinical Centre Osnabrück, D-49076 Osnabrück, Germany
| | - Rainer Horst Krech
- Institute of Pathology, Clinical Centre Osnabrück, D-49076 Osnabrück, Germany
| | - Frank Jacobsen
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Eike Burandt
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
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23
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L- myc Gene Expression in Canine Fetal Fibroblasts Promotes Self-Renewal Capacity but Not Tumor Formation. Cells 2021; 10:cells10081980. [PMID: 34440750 PMCID: PMC8391401 DOI: 10.3390/cells10081980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/23/2021] [Accepted: 07/28/2021] [Indexed: 12/26/2022] Open
Abstract
Canines are useful in mammalian preclinical studies because they are larger than rodents and share many diseases with humans. Canine fetal fibroblast cells (CFFs) are an easily accessible source of somatic cells. However, they are easily driven to senescence and become unusable with continuous in vitro culture. Therefore, to overcome these deficiencies, we investigated whether tetracycline-inducible L-myc gene expression promotes self-renewal activity and tumorigenicity in the production of induced conditional self-renewing fibroblast cells (iCSFCs). Here, we describe the characterization of a new iCSFC line immortalized by transduction with L-myc that displays in vitro self-renewal ability without tumorigenic capacity. We established conditionally inducible self-renewing fibroblast cells by transducing CFF-3 cells with L-myc under the tetracycline-inducible gene expression system. In the absence of doxycycline, the cells did not express L-myc or undergo self-renewal. The iCSFCs had a fibroblast-like morphology, normal chromosome pattern, and expressed fibroblast-specific genes and markers. However, the iCSFCs did not form tumors in a soft agar colony-forming assay. We observed higher expression of three ES modules (core pluripotency genes, polycomb repressive complex genes (PRC), and MYC-related genes) in the iCSFCs than in the CFF-3 cells; in particular, the core pluripotency genes (OCT4, SOX2, and NANOG) were markedly up-regulated compared with the PRC and MYC module genes. These results demonstrated that, in canine fetal fibroblasts, L-myc tetracycline-inducible promoter-driven gene expression induces self-renewal capacity but not tumor formation. This study suggests that L-myc gene-induced conditional self-renewing fibroblast cells can be used as an in vitro tool in a variety of biomedical studies related to drug screening.
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24
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Liu K, Lei S, Kuang Y, Jin Q, Long D, Liu C, Jiang Y, Zhao H, Yao H. A Novel Mechanism of the c-Myc/NEAT1 Axis Mediating Colorectal Cancer Cell Response to Photodynamic Therapy Treatment. Front Oncol 2021; 11:652831. [PMID: 34395239 PMCID: PMC8355738 DOI: 10.3389/fonc.2021.652831] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 05/18/2021] [Indexed: 12/13/2022] Open
Abstract
Photodynamic therapy (PDT) is considered a potential treatment regimen for colorectal cancer cases (CRC). p53 signaling and the miR-124/iASPP axis play an essential role in the PDT resistance of CRC cells. PDT treatment downregulated NEAT1 expression in p53wt HCT116 and RKO cells. In these two cell lines, NEAT1 silencing enhanced the suppressive effects of PDT on cell viability and apoptosis. Within the subcutaneously implanted tumor model, NEAT1 silencing enhanced PDT-induced suppression on tumor growth. Regarding p53-deleted HCT116 cells, PDT only moderately affected cell proliferation but induced downregulation of NEAT1. NEAT1 directly targeted miR-124, acting as a ceRNA, competing with iASPP for miR-124 binding, and counteracting miR-124-mediated repression on iASPP under PDT treatment. NEAT1 silencing was enhanced, whereas miR-124 inhibition attenuated PDT effects on CRC cells; miR-124 inhibition significantly reversed the roles of NEAT1 silencing in PDT-treated CRC cells. miR-124 negatively correlated with NEAT1 and iASPP, respectively, whereas NEAT1 and iASPP positively correlated with each other. PDT downregulated c-Myc in CRC cells, and c-Myc activated the transcription of NEAT1 through the targeting of its promoter region. Within p53mut SW480 cells, PDT failed to alter cell viability and apoptosis but still downregulated c-Myc, NEAT1, and iASPP and upregulated miR-124. In p53 mutant high-abundant CRC tissues, c-Myc and NEAT1 were up-regulated, and miR-124 was downregulated. In c-Myc high-abundant CRC tissues, NEAT1 and iASPP were up-regulated, and miR-124 was downregulated. The critical role of the c-Myc/NEAT1 axis in mediating CRC response to PDT treatment via the miR-124/iASPP/p53 feedback loop was conclusively demonstrated.
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Affiliation(s)
- Kuijie Liu
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Sanlin Lei
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yong Kuang
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Qianqian Jin
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Dongju Long
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Chao Liu
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yuhong Jiang
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hua Zhao
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hongliang Yao
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
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25
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Certo M, Elkafrawy H, Pucino V, Cucchi D, Cheung KC, Mauro C. Endothelial cell and T-cell crosstalk: Targeting metabolism as a therapeutic approach in chronic inflammation. Br J Pharmacol 2021; 178:2041-2059. [PMID: 31999357 PMCID: PMC8246814 DOI: 10.1111/bph.15002] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 01/09/2020] [Accepted: 01/15/2020] [Indexed: 12/14/2022] Open
Abstract
The role of metabolic reprogramming in the coordination of the immune response has gained increasing consideration in recent years. Indeed, it has become clear that changes in the metabolic status of immune cells can alter their functional properties. During inflammation, T cells need to generate sufficient energy and biomolecules to support growth, proliferation, and effector functions. Therefore, T cells need to rearrange their metabolism to meet these demands. A similar metabolic reprogramming has been described in endothelial cells, which have the ability to interact with and modulate the function of immune cells. In this overview, we will discuss recent insights in the complex crosstalk between endothelial cells and T cells as well as their metabolic reprogramming following activation. We highlight key components of this metabolic switch that can lead to the development of new therapeutics against chronic inflammatory disorders. LINKED ARTICLES: This article is part of a themed issue on Cellular metabolism and diseases. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v178.10/issuetoc.
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Affiliation(s)
- Michelangelo Certo
- Institute of Inflammation and Ageing, College of Medical and Dental SciencesUniversity of BirminghamBirminghamUK
| | - Hagar Elkafrawy
- Medical Biochemistry and Molecular Biology Department, Faculty of MedicineAlexandria UniversityAlexandriaEgypt
| | - Valentina Pucino
- Institute of Inflammation and Ageing, College of Medical and Dental SciencesUniversity of BirminghamBirminghamUK
| | - Danilo Cucchi
- Barts Cancer InstituteQueen Mary University of LondonLondonUK
| | - Kenneth C.P. Cheung
- School of Life SciencesThe Chinese University of Hong KongHong Kong SARChina
| | - Claudio Mauro
- Institute of Inflammation and Ageing, College of Medical and Dental SciencesUniversity of BirminghamBirminghamUK
- Institute of Cardiovascular Sciences, College of Medical and Dental SciencesUniversity of BirminghamBirminghamUK
- Institute of Metabolism and Systems Research, College of Medical and Dental SciencesUniversity of BirminghamBirminghamUK
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26
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Dehner C, Moon CI, Zhang X, Zhou Z, Miller C, Xu H, Wan X, Yang K, Mashl J, Gosline SJ, Wang Y, Zhang X, Godec A, Jones PA, Dahiya S, Bhatia H, Primeau T, Li S, Pollard K, Rodriguez FJ, Ding L, Pratilas CA, Shern JF, Hirbe AC. Chromosome 8 gain is associated with high-grade transformation in MPNST. JCI Insight 2021; 6:146351. [PMID: 33591953 PMCID: PMC8026192 DOI: 10.1172/jci.insight.146351] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 02/10/2021] [Indexed: 12/15/2022] Open
Abstract
One of the most common malignancies affecting adults with Neurofibromatosis type 1 (NF1) is the malignant peripheral nerve sheath tumor (MPNST), an aggressive and often fatal sarcoma that commonly arises from benign plexiform neurofibromas. Despite advances in our understanding of MPNST pathobiology, there are few effective therapeutic options, and no investigational agents have proven successful in clinical trials. To further understand the genomic heterogeneity of MPNST, and to generate a preclinical platform that encompasses this heterogeneity, we developed a collection of NF1-MPNST patient-derived xenografts (PDX). These PDX were compared with the primary tumors from which they were derived using copy number analysis, whole exome sequencing, and RNA sequencing. We identified chromosome 8 gain as a recurrent genomic event in MPNST and validated its occurrence by FISH in the PDX and parental tumors, in a validation cohort, and by single-cell sequencing in the PDX. Finally, we show that chromosome 8 gain is associated with inferior overall survival in soft-tissue sarcomas. These data suggest that chromosome 8 gain is a critical event in MPNST pathogenesis and may account for the aggressive nature and poor outcomes in this sarcoma subtype.
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Affiliation(s)
| | - Chang In Moon
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Xiyuan Zhang
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Zhaohe Zhou
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Chris Miller
- McDonnell Genome Institute, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Hua Xu
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA.,The First Affiliated Hospital, Nanchang University, Nangchang, China
| | - Xiaodan Wan
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA.,The First Affiliated Hospital, Nanchang University, Nangchang, China
| | - Kuangying Yang
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Jay Mashl
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Sara Jc Gosline
- Pacific Northwest National Laboratory, Seattle, Washington, USA
| | - Yuxi Wang
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Xiaochun Zhang
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Abigail Godec
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Paul A Jones
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Sonika Dahiya
- Department of Pathology and Immunology and.,Siteman Cancer Center Division of Pediatric Oncology, St. Louis, Missouri, USA
| | - Himanshi Bhatia
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Tina Primeau
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Shunqiang Li
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA.,Siteman Cancer Center Division of Pediatric Oncology, St. Louis, Missouri, USA
| | - Kai Pollard
- Division of Pediatric Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland, USA
| | - Fausto J Rodriguez
- Department of Pathology, John Hopkins University, Baltimore, Maryland, USA
| | - Li Ding
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA.,Siteman Cancer Center Division of Pediatric Oncology, St. Louis, Missouri, USA
| | - Christine A Pratilas
- Division of Pediatric Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland, USA
| | - Jack F Shern
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Angela C Hirbe
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA.,Siteman Cancer Center Division of Pediatric Oncology, St. Louis, Missouri, USA
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27
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Thean LF, Blöcker C, Li HH, Lo M, Wong M, Tang CL, Tan EKW, Rozen SG, Cheah PY. Enhancer-derived long non-coding RNAs CCAT1 and CCAT2 at rs6983267 has limited predictability for early stage colorectal carcinoma metastasis. Sci Rep 2021; 11:404. [PMID: 33432117 PMCID: PMC7801656 DOI: 10.1038/s41598-020-79906-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 12/14/2020] [Indexed: 12/12/2022] Open
Abstract
Up-regulation of long non-coding RNAs (lncRNAs), colon-cancer associated transcript (CCAT) 1 and 2, was associated with worse prognosis in colorectal cancer (CRC). Nevertheless, their role in predicting metastasis in early-stage CRC is unclear. We measured the expression of CCAT1, CCAT2 and their oncotarget, c-Myc, in 150 matched mucosa-tumour samples of early-stage microsatellite-stable Chinese CRC patients with definitive metastasis status by multiplex real-time RT-PCR assay. Expression of CCAT1, CCAT2 and c-Myc were significantly up-regulated in the tumours compared to matched mucosa (p < 0.0001). The expression of c-Myc in the tumours was significantly correlated to time to metastasis [hazard ratio = 1.47 (1.10–1.97)] and the risk genotype (GG) of rs6983267, located within CCAT2. Expression of c-Myc and CCAT2 in the tumour were also significantly up-regulated in metastasis-positive compared to metastasis-negative patients (p = 0.009 and p = 0.04 respectively). Nevertheless, integrating the expression of CCAT1 and CCAT2 by the Random Forest classifier did not improve the predictive values of ColoMet19, the mRNA-based predictor for metastasis previously developed on the same series of tumours. The role of these two lncRNAs is probably mitigated via their oncotarget, c-Myc, which was not ranked high enough previously to be included in ColoMet19.
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Affiliation(s)
- Lai Fun Thean
- Department of Colorectal Surgery, Singapore General Hospital, Academia, Level 9, Discovery Tower, 20 College Road, Singapore, 169856, Singapore
| | | | - Hui Hua Li
- Health Service Research Unit, Singapore General Hospital, Singapore, Singapore
| | - Michelle Lo
- Department of Colorectal Surgery, Singapore General Hospital, Academia, Level 9, Discovery Tower, 20 College Road, Singapore, 169856, Singapore
| | - Michelle Wong
- Department of Colorectal Surgery, Singapore General Hospital, Academia, Level 9, Discovery Tower, 20 College Road, Singapore, 169856, Singapore
| | - Choong Leong Tang
- Department of Colorectal Surgery, Singapore General Hospital, Academia, Level 9, Discovery Tower, 20 College Road, Singapore, 169856, Singapore
| | - Emile K W Tan
- Department of Colorectal Surgery, Singapore General Hospital, Academia, Level 9, Discovery Tower, 20 College Road, Singapore, 169856, Singapore
| | - Steven G Rozen
- Duke-NUS Center for Computational Biology, Duke-NUS Medical School, National University of Singapore, Singapore, Singapore
| | - Peh Yean Cheah
- Department of Colorectal Surgery, Singapore General Hospital, Academia, Level 9, Discovery Tower, 20 College Road, Singapore, 169856, Singapore. .,Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore. .,Duke-NUS Medical School, National University of Singapore, Singapore, Singapore.
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28
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Ting TA, Chaumet A, Bard FA. Targeting c-Myc with a novel Peptide Nuclear Delivery Device. Sci Rep 2020; 10:17762. [PMID: 33082422 PMCID: PMC7576588 DOI: 10.1038/s41598-020-73998-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 09/02/2020] [Indexed: 02/07/2023] Open
Abstract
Biologics such as peptides and antibodies are a well-established class of therapeutics. However, their intracellular delivery remains problematic. In particular, methods to efficiently inhibit intra-nuclear targets are lacking. We previously described that Pseudomonas Exotoxin A reaches the nucleoplasm via the endosomes-to-nucleus trafficking pathway. Here, we show that a non-toxic truncated form of PE can be coupled to peptides and efficiently reach the nucleoplasm. It can be used as a Peptide Nuclear Delivery Device (PNDD) to deliver polypeptidic cargos as large as Glutathione- S-transferase (GST) to the nucleus. PNDD1 is a fusion of PNDD to the c-myc inhibitor peptide H1. PNDD1 is able to inhibit c-Myc dependent transcription at nanomolar concentration. In contrast, H1 fused to various cell-penetrating peptides are active only in the micromolar range. PNDD1 attenuates cell proliferation and induces cell death in various tumor cell lines. In particular, several patient-derived Diffuse Large B-Cell Lymphomas cell lines die after exposure to PNDD1, while normal B-cells survive. Altogether, our data indicate that PNDD is a powerful tool to bring active cargo to the nucleus and PNDD1 could be the basis of a new therapy against lymphoma.
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Affiliation(s)
- Trinda Anne Ting
- Institute of Molecular and Cell Biology, Singapore, 138673, Singapore
| | - Alexandre Chaumet
- Institute of Molecular and Cell Biology, Singapore, 138673, Singapore
| | - Frederic Andre Bard
- Institute of Molecular and Cell Biology, Singapore, 138673, Singapore. .,Department of Biochemistry, National University of Singapore, Singapore, 119077, Singapore.
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29
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He D, Yang X, Kuang W, Huang G, Liu X, Zhang Y. The Novel Circular RNA Circ-PGAP3 Promotes the Proliferation and Invasion of Triple Negative Breast Cancer by Regulating the miR-330-3p/Myc Axis. Onco Targets Ther 2020; 13:10149-10159. [PMID: 33116597 PMCID: PMC7553664 DOI: 10.2147/ott.s274574] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 09/05/2020] [Indexed: 12/19/2022] Open
Abstract
Background Triple negative breast cancer (TNBC), a special subtype of breast cancer, is characterized by high recurrence, mortality and few treatments. To date, the key factors contributing to TNBC progression have not been fully identified. In the current study, we found a TNBC-related circular RNA (circRNA), circ-PGAP3, and explored its biological function, clinical significance and potential mechanism of action. Materials and Methods The functional assay was carried out using CCK-8, colony formation and Transwell invasion assays. RIP, RNA pull-down and luciferase reporter assays were used to test the correlation between circ-PGAP3, miR-330-3p and Myc. The animal model was employed to verify the function of circ-PGAP3 in vivo. Results Circ-PGAP3 expression was significantly increased in TNBC tissues. High circ-PGAP3 was closely associated with large tumor size, lymph node metastasis, later TNM stage and dismal outcome. Through performing a series of in vitro and in vivo experiments, we found that circ-PGAP3 promoted TNBC cell growth and metastasis via sponging and inhibiting miR-330-3p, resulting in the upregulation of proto-oncogene Myc. Importantly, circ-PGAP3 expression was positively correlated with the Myc protein level but negatively correlated with miR-330-3p expression in TNBC tissues. Moreover, silencing of miR-330-3p or overexpression of Myc could effectively rescue the weakened malignant phenotype induced by circ-PGAP3 knockdown. Conclusion Our results unveil the important driving role of circ-PGAP3 in TNBC development and progression, which provides a candidate therapeutic target for TNBC patients.
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Affiliation(s)
- Dabao He
- Department of Laboratory Medicine, Shenzhen Longhua District Central Hospital, Shenzhen 518110, People's Republic of China
| | - Xiaoling Yang
- Department of Laboratory Medicine, Shenzhen Baoan District Songgang People's Hospital, Shenzhen 518105, People's Republic of China
| | - Wenbin Kuang
- Department of Laboratory Medicine, Shenzhen Longhua District Central Hospital, Shenzhen 518110, People's Republic of China
| | - Guoqing Huang
- Department of Laboratory Medicine, Shenzhen Longhua District Central Hospital, Shenzhen 518110, People's Republic of China
| | - Xiaohong Liu
- Department of Laboratory Medicine, Shenzhen Longhua District Central Hospital, Shenzhen 518110, People's Republic of China
| | - Yonggang Zhang
- Department of Laboratory Medicine, Shenzhen Longhua District Central Hospital, Shenzhen 518110, People's Republic of China
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Martínez-Calvo M, Guerrini L, Rodríguez J, Álvarez-Puebla RA, Mascareñas JL. Surface-Enhanced Raman Scattering Detection of Nucleic Acids Exhibiting Sterically Accessible Guanines Using Ruthenium-Polypyridyl Reagents. J Phys Chem Lett 2020; 11:7218-7223. [PMID: 32787310 DOI: 10.1021/acs.jpclett.0c02148] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Here, we report the application of surface-enhanced Raman scattering (SERS) spectroscopy as a rapid and practical tool for assessing the formation of coordinative adducts between nucleic acid guanines and ruthenium polypyridyl reagents. The technology provides a practical approach for the wash-free and quick identification of nucleic acid structures exhibiting sterically accessible guanines. This is demonstrated for the detection of a quadruplex-forming sequence present in the promoter region of the c-myc oncogene, which exhibits a nonpaired, reactive guanine at a flanking position of the G-quartets.
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Affiliation(s)
- Miguel Martínez-Calvo
- Centro Singular de Investigación en Quı́mica Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Quı́mica Orgánica, Universidade de Santiago de Compostela, Rúa Jenaro de la Fuente s/n, 15782 Santiago de Compostela, Spain
- Centro de Investigaciones Avanzadas (CICA), AE CICA-INIBIC, Departamento de Quı́mica, Facultade de Ciencias, Universidade da Coruña, Rúa As Carballeiras s/n, 15071 A Coruña, Galicia, Spain
| | - Luca Guerrini
- Universitat Rovira i Virgili, Departament de Quı́mica Fı́sica i Inorgànica, EmaS. Carrer de Marcel-lí Domingo s/n, 43007 Tarragona, Spain
| | - Jéssica Rodríguez
- Centro Singular de Investigación en Quı́mica Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Quı́mica Orgánica, Universidade de Santiago de Compostela, Rúa Jenaro de la Fuente s/n, 15782 Santiago de Compostela, Spain
| | - Ramón A Álvarez-Puebla
- Universitat Rovira i Virgili, Departament de Quı́mica Fı́sica i Inorgànica, EmaS. Carrer de Marcel-lí Domingo s/n, 43007 Tarragona, Spain
- ICREA, Passeig Lluı́s Companys 23, 08010 Barcelona, Spain
| | - José L Mascareñas
- Centro Singular de Investigación en Quı́mica Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Quı́mica Orgánica, Universidade de Santiago de Compostela, Rúa Jenaro de la Fuente s/n, 15782 Santiago de Compostela, Spain
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Najafi SMA. The Canonical Wnt Signaling (Wnt/β-Catenin Pathway): A Potential Target for Cancer Prevention and Therapy. IRANIAN BIOMEDICAL JOURNAL 2020; 24:269-80. [PMID: 32429632 PMCID: PMC7392137 DOI: 10.29252/ibj.24.5.264] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 11/27/2019] [Indexed: 11/15/2022]
Abstract
Precise regulation of signal transduction pathways is crucial for normal animal development and for maintaining cellular and tissue homeostasis in adults. The Wnt/Frizzled-mediated signaling includes canonical and non-canonical signal transduction pathways. Upregulation or downregulation of the canonical Wnt signaling (or the Wnt/β-Catenin signal transduction) leads to a variety of human diseases, including cancers, neurodegenerative disorders, skin and bone diseases, and heart deficiencies. Therefore, Wnt/β-Catenin signal transduction is a potential clinical target for the treatment of not only human cancers but also some other human chronic diseases. Here, some recent results including those from my laboratory highlighting the role of Wnt/β-Catenin signal transduction in human cancers will be reviewed. After a brief overview on canonical Wnt signaling and introducing some critical β-Catenin/T-cell factor-target genes, the interaction of canonical Wnt signaling with some common human cancers will be discussed. In the end, the different segments of the aforesaid signaling pathway, which have been considered as targets for clinical purposes, will be scrutinized.
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Affiliation(s)
- S Mahmoud A Najafi
- Department of Cell and Molecular Biology, School of Biology, College of Sciences, University of Tehran, P.O. Box 14155-6455, Tehran, Iran
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Kuang G, Zhang M, Kang S, Hu D, Li X, Wei Z, Gong X, An LK, Huang ZS, Shu B, Li D. Syntheses and Evaluation of New Bisacridine Derivatives for Dual Binding of G-Quadruplex and i-Motif in Regulating Oncogene c-myc Expression. J Med Chem 2020; 63:9136-9153. [PMID: 32787078 DOI: 10.1021/acs.jmedchem.9b01917] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The c-myc oncogene is an important regulator for cell growth and differentiation, and its aberrant overexpression is closely related to the occurrence and development of various cancers. Thus, the suppression of c-myc transcription and expression has been investigated for cancer treatment. In this study, various new bisacridine derivatives were synthesized and evaluated for their binding with c-myc promoter G-quadruplex and i-motif. We found that a9 could bind to and stabilize both G-quadruplex and i-motif, resulting in the downregulation of c-myc gene transcription. a9 could inhibit cancer cell proliferation and induce SiHa cell apoptosis and cycle arrest. a9 exhibited tumor growth inhibition activity in a SiHa xenograft tumor model, which might be related to its binding with c-myc promoter G-quadruplex and i-motif. Our results suggested that a9 as a dual G-quadruplex/i-motif binder could be effective in both oncogene replication and transcription and become a promising lead compound for further development with improved potency and selectivity.
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Affiliation(s)
- Guotao Kuang
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 Waihuan East Road, Guangzhou 510006, P. R. China
| | - Meiling Zhang
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 Waihuan East Road, Guangzhou 510006, P. R. China
| | - Shuangshuang Kang
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 Waihuan East Road, Guangzhou 510006, P. R. China
| | - Dexuan Hu
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 Waihuan East Road, Guangzhou 510006, P. R. China
| | - Xiaoya Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 Waihuan East Road, Guangzhou 510006, P. R. China
| | - Zuzhuang Wei
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 Waihuan East Road, Guangzhou 510006, P. R. China
| | - Xue Gong
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 Waihuan East Road, Guangzhou 510006, P. R. China
| | - Lin-Kun An
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 Waihuan East Road, Guangzhou 510006, P. R. China
| | - Zhi-Shu Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 Waihuan East Road, Guangzhou 510006, P. R. China
| | - Bing Shu
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 Waihuan East Road, Guangzhou 510006, P. R. China.,School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, P. R. China
| | - Ding Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 Waihuan East Road, Guangzhou 510006, P. R. China
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Hu Y, Wang F, Xu F, Fang K, Fang Z, Shuai X, Cai K, Chen J, Hu P, Chen D, Xu P, Hu C, Zeng Z, Zhong J, Li W, Tang J, Huang M, Zhao Y, Wang C, Zhao G. A reciprocal feedback of Myc and lncRNA MTSS1-AS contributes to extracellular acidity-promoted metastasis of pancreatic cancer. Am J Cancer Res 2020; 10:10120-10140. [PMID: 32929338 PMCID: PMC7481418 DOI: 10.7150/thno.49147] [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: 06/06/2020] [Accepted: 07/29/2020] [Indexed: 12/24/2022] Open
Abstract
Rationale: Previous studies have reported on the role of extracellular acidity in the metastasis of numerous cancers. However, the involvement of long noncoding RNA (lncRNA) in the extracellular acidity-induced cancer metastasis of pancreatic cancer (PC) remains unclear. Methods: Different expression levels of lncRNAs in PC cells under normal and acidic conditions were compared by RNA sequencing (RNA-seq). The effects of antisense lncRNA of metastasis suppressor 1 (MTSS1-AS) on acidic PC cells were assessed by gain- and loss-of-function experiments. Fluorescence in situ hybridization, RNA immunoprecipitation, RNA pull-down, Western blot, luciferase reporter, and Chromatin immunoprecipitation assays were employed to determine the regulatory mechanisms of MTSS1-AS in the acidity-induced metastasis of PC cells. The expression of MTSS1-AS and associated pathways were compared in PC samples and peritumoral normal tissues. Results: RNA-seq demonstrated that MTSS1-AS was significantly downregulated in pancreatic cells cultured with the acidic medium. The overexpression of MTSS1-AS remarkably inhibited the acidity-promoted metastasis of PC cells by upregulating the expression of its sense gene metastasis suppressor 1 (MTSS1). Mechanistically, MTSS1-AS scaffolded the interaction between E3 ubiquitin-protein ligase STIP1 homology and U-box containing protein 1 (STUB1) and transcription regulator myeloid zinc finger 1 (MZF1), leading to ubiquitination-mediated degradation of MZF1. Further, MZF1 inhibited the expression of MTSS1 by binding to the MTSS1 promoter. Thus, the acidity-reduced MTSS1-AS facilitated the stability of MZF1 and its inhibitory effect on MTSS1 transcription, thereby promoting the metastasis of PC cells under acidic conditions. Moreover, MTSS1-AS was transcriptionally repressed by the binding of MYC proto-oncogene (Myc) with initiator (Inr) elements of the MTSS1-AS promoter. Meanwhile, MTSS1-AS mutually repressed the expression of Myc by impairing the MZF1-mediated transcription activation of Myc, thereby forming a negative feedback loop between MTSS1-AS and Myc in acidic PC cells. In accordance with the experimental results, MTSS1-AS and MTSS1 were downregulated in PC and correlated with poor overall survival. Conclusions: The results implicated that a reciprocal feedback loop between Myc and MTSS1-AS contributed to the extracellular acidity-promoted metastasis of PC, and indicated that MTSS1-AS was a valuable biomarker and therapeutic target for PC.
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Chaput C, Sirard MA. Embryonic response to high beta-hydroxybutyrate (BHB) levels in postpartum dairy cows. Domest Anim Endocrinol 2020; 72:106431. [PMID: 32325411 DOI: 10.1016/j.domaniend.2019.106431] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 10/21/2019] [Accepted: 12/27/2019] [Indexed: 12/11/2022]
Abstract
Cows at the beginning of lactation often do not meet their energy needs by feeding and therefore mobilize body fat, which produces ketone bodies, including β-hydroxybutyrate (BHB). They are nevertheless usually inseminated around 60 d postpartum, when they are still in this characteristic period of energy deficit. The aim of this study was to observe the effects of negative energy balance on embryo quality and to identify ways to improve the fertility of dairy cows. Holstein cows (n = 18) grouped as high or low BHB based on blood measurement at day 45 postpartum were estrus-synchronized and treated with follicle-stimulating hormone to obtain multiple follicle development, induced to ovulate and inseminated with sexed semen around day 60 postpartum. Of the 290 embryos collected over 16 mo, 159 were of quality I to IV. Based on microarray analysis of gene expression, exposure to an energy deficit metabolic environment (high BHB) during early development appeared to modify signaling by the mTOR and sirtuins pathways in the embryo, implying mitochondrial dysfunction and inhibition of transcription, leading to slower cell division, thus programming the embryo to be more energy efficient. Altered methylation markers suggested that such coping mechanisms might persist into adulthood.
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Affiliation(s)
- C Chaput
- Centre de recherche en reproduction, développement et santé intergénérationnelle, Faculté des sciences de l'Agriculture et de l'Alimentation, Département des Sciences Animales, Pavillon INAF, Université Laval, Québec, Québec, Canada
| | - M A Sirard
- Centre de recherche en reproduction, développement et santé intergénérationnelle, Faculté des sciences de l'Agriculture et de l'Alimentation, Département des Sciences Animales, Pavillon INAF, Université Laval, Québec, Québec, Canada.
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Liu J, Xu R, Mai SJ, Ma YS, Zhang MY, Cao PS, Weng NQ, Wang RQ, Cao D, Wei W, Guo RP, Zhang YJ, Xu L, Chen MS, Zhang HZ, Huang L, Fu D, Wang HY. LncRNA CSMD1-1 promotes the progression of Hepatocellular Carcinoma by activating MYC signaling. Am J Cancer Res 2020; 10:7527-7544. [PMID: 32685003 PMCID: PMC7359090 DOI: 10.7150/thno.45989] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 05/31/2020] [Indexed: 12/27/2022] Open
Abstract
Emerging evidence suggests that long non-coding RNAs (lncRNA) play critical roles in the development and progression of diverse cancers including hepatocellular carcinoma (HCC), but the underlying molecular mechanisms of lncRNAs that are involved in hepatocarcinogenesis have not been fully explored. Methods: In this study, we profiled lncRNA expression in 127 pairs of HCC and nontumor liver tissues (a Discovery Cohort) using a custom microarray. The expression and clinical significance of lncCSMD1-1 were then validated with qRT-PCR and COX regression analysis in a Validation Cohort (n=260) and two External Validation Cohorts (n=92 and n=124, respectively). In vitro and in vivo assays were performed to explore the biological effects of lncCSMD1-1 on HCC cells. The interaction of lncCSMD1-1 with MYC was identified by RNA pull-down and RNA immunoprecipitation. The role of LncCSMD1-1 in the degradation of MYC protein was also investigated. Results: With microarray, we identified a highly upregulated lncRNA, lncCSMD1-1, which was associated with tumor progression and poor prognosis in the Discovery Cohort, and validated in another 3 HCC cohorts. Consistently, ectopic expression of lncCSMD1-1 notably promotes cell proliferation, migration, invasion, tumor growth and metastasis of HCC cells in in vitro and in vivo experiments. Gene expression profiling on HCC cells and gene sets enrichment analysis indicated that the MYC target gene set was significantly enriched in HCC cells overexpressing lncCSMD1-1, and lncCSMD1-1 was found to directly bind to MYC protein in the nucleus of HCC cells, which resulted in the elevation of MYC protein. Mechanistically, lncCSMD1-1 interacted with MYC protein to block its ubiquitin-proteasome degradation pathway, leading to activation of its downstream target genes. Conclusion: lncCSMD1-1 is upregulated in HCC and promotes progression of HCC by activating the MYC signaling pathway. These results provide the evidence that lncCSMD1-1 may serve as a novel prognostic marker and potential therapeutic target for HCC.
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Hadj-Moussa H, Wijenayake S, Storey KB. Multi-tissue profile of NFκB pathway regulation during mammalian hibernation. Comp Biochem Physiol B Biochem Mol Biol 2020; 246-247:110460. [PMID: 32445797 DOI: 10.1016/j.cbpb.2020.110460] [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: 02/03/2020] [Revised: 05/12/2020] [Accepted: 05/14/2020] [Indexed: 11/17/2022]
Abstract
Hibernators have evolved effective mechanisms to overcome the challenges of torpor-arousal cycling. This study focuses on the antioxidant and inflammatory defenses under the control of the redox-sensitive and inflammatory-centered NFκB transcription factor in the thirteen-lined ground squirrel (Ictidomys tridecemlineatus), a well-established model of mammalian hibernation. While hibernators significantly depress oxygen consumption and overall metabolic rate during torpor, arousal brings with it a rapid increase in respiration that is associated with an influx of reactive oxygen species. As such, hibernators employ a variety of antioxidant defenses to combat oxidative damage. Herein, we used Luminex multiplex technology to examine the expression of key proteins in the NFκB transcriptional network, including NFκB, super-repressor IκBα, upstream activators TNFR1 and FADD, and downstream target c-Myc. Transcription factor DNA-binding ELISAs were also used to measure the relative degree of NFκB binding to DNA during hibernation. Analyses were performed across eight different tissues, cerebral cortex, brainstem, white and brown adipose tissue, heart, liver, kidney, and spleen, during euthermic control and late torpor to highlight tissue-specific NFκB mediated cytoprotective responses against oxidative stress experienced during torpor-arousal. Our findings demonstrated brain-specific NFκB activation during torpor, with elevated levels of upstream activators, inactive-phosphorylated IκBα, active-phosphorylated NFκB, and enhanced NFκB-DNA binding. Protein levels of downstream protein, c-Myc, also increased in the brain and adipose tissues during late torpor. The results show that NFκB regulation might serve a critical neuroprotective and cytoprotective role in hibernating brains and selective peripheral tissue.
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Affiliation(s)
- Hanane Hadj-Moussa
- Department of Biology and Institute of Biochemistry, Carleton University, Ottawa, ON, Canada
| | - Sanoji Wijenayake
- Department of Biology and Institute of Biochemistry, Carleton University, Ottawa, ON, Canada; Department of Biological Sciences and Center for Environmental Epigenetics and Development, University of Toronto, Toronto, ON, Canada
| | - Kenneth B Storey
- Department of Biology and Institute of Biochemistry, Carleton University, Ottawa, ON, Canada.
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Du J, Zhang G, Qiu H, Yu H, Yuan W. A novel positive feedback loop of linc02042 and c-Myc mediated by YBX1 promotes tumorigenesis and metastasis in esophageal squamous cell carcinoma. Cancer Cell Int 2020; 20:75. [PMID: 32161513 PMCID: PMC7060651 DOI: 10.1186/s12935-020-1154-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 02/26/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Long non-coding RNA (lncRNA) is a class of endogenous RNA with a length of more than 200 nucleotides, which is emerging as a pivotal player in cancer development and progression. However, the functional roles of many members in this class remain largely uncharacterized. In the present study, we explored the biological relevance of linc02042 in esophageal squamous cell carcinoma (ESCC). METHODS qRT-PCR was used to detect the levels of linc02042 and c-Myc. Western blot was used to assess protein expression level. CCK-8 and Transwell assays were employed to test ESCC cell proliferation and invasion, respectively. The mice study including xenograft tumor and lung metastasis models was used to determine the role of linc02042 in vivo. RNA pull-down, ChIP and luciferase reporter assays were employed to test the relationship between linc02042, YBX1 and c-Myc. RESULTS Linc02042 was found to be markedly upregulated in ESCC cell lines, tissues and plasma, and was closely correlated with malignant clinical features. Knockdown of linc02042 significantly inhibited ESCC cell viability and invasion in vitro as well as tumor growth and lung metastasis in vivo, whereas overexpression of linc02042 resulted in the opposite results. Mechanistically, linc02042 acted as a scaffold for YBX-1 binding to the 3'-UTR of c-Myc mRNA, leading to enhanced c-Myc mRNA stability, thereby facilitating ESCC growth and metastasis. Moreover, in turn, c-Myc was able to transcriptionally elevate linc02042 by directly binding to the E-box motif proximal to the transcription start site (TSS) of linc02042 promoter. Clinically, linc02042 was identified as an effective diagnostic and prognostic biomarker for ESCC patients, and its expression was strongly positively correlated with c-Myc expression in ESCC tissues. CONCLUSION Our data suggest that linc02042 plays an important tumor-promoting role in ESCC, which lays a foundation for considering it as a potential target for ESCC patients.
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Affiliation(s)
- Jiahui Du
- Department of Minimally invasive surgery, Henan Provincial Chest Hospital, No. 1 Weiwu Road, Jinshui District, Zhengzhou, 450000 People’s Republic of China
| | - Guangzhao Zhang
- Department of Minimally invasive surgery, Henan Provincial Chest Hospital, No. 1 Weiwu Road, Jinshui District, Zhengzhou, 450000 People’s Republic of China
| | - Hongli Qiu
- Department of Minimally invasive surgery, Henan Provincial Chest Hospital, No. 1 Weiwu Road, Jinshui District, Zhengzhou, 450000 People’s Republic of China
| | - Haifeng Yu
- Department of Minimally invasive surgery, Henan Provincial Chest Hospital, No. 1 Weiwu Road, Jinshui District, Zhengzhou, 450000 People’s Republic of China
| | - Wuying Yuan
- Department of Minimally invasive surgery, Henan Provincial Chest Hospital, No. 1 Weiwu Road, Jinshui District, Zhengzhou, 450000 People’s Republic of China
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Opie J, Antel K, Koller A, Novitzky N. In the South African setting, HIV-associated Burkitt lymphoma is associated with frequent leukaemic presentation, complex cytogenetic karyotypes, and adverse clinical outcomes. Ann Hematol 2020; 99:571-578. [PMID: 31955214 PMCID: PMC7258179 DOI: 10.1007/s00277-020-03908-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 01/13/2020] [Indexed: 01/10/2023]
Abstract
South Africa (SA) has a high prevalence of human immunodeficiency virus (HIV) infection. People living with HIV are at markedly increased risk of developing Burkitt lymphoma (BL), which is characterized by the MYC translocation. There is a paucity of survival data of HIV-associated Burkitt lymphoma/leukaemia (HIV-BL) cases from SA, and the relationship between karyotype and outcomes has not been widely reported. Here we report the clinico-pathological characteristics of a cohort of cytogenetically confirmed HIV-BL cases. A retrospective, descriptive review was conducted of clinico-pathological features of HIV-BL patients newly diagnosed and treated between 2005 and 2014 at our tertiary academic institution in Cape Town. Only HIV-BL patients with cytogenetic evidence of a MYC translocation were included for analysis. A multivariable Cox proportional hazards model assessed the impact of variables on overall survival (OS). Forty-nine patients met inclusion criteria. Their median age was 37 years (IQR 30-43 years) and 57% (n = 28) were females. Their median CD4 count was 240 cells/μl (IQR 103-423 cells/μl). The majority, 61% (n = 30), had leukaemic presentation, and 20% (n = 10) had a complex karyotype on conventional karyotyping. Seventy-seven percent (n = 36) received various protocols of combination intensive chemotherapy, excluding rituximab. Their OS was 64% (95% CI 45-77%) at 6 months, and 34% (95% CI 17-51%) at 5 years. Leukaemic presentation and a complex karyotype gave a 2.7-fold (95% CI 1.0-6.7) and 2.6-fold (95% CI 1.1-6.6) increased risk of mortality respectively, which were statistical significant (p < 0.05). We report 49 newly diagnosed, cytogenetically confirmed HIV-BL patients at our institution over a 10-year period. There was a high proportion of complex karyotypes and leukaemic presentation, which both independently adversely affected survival. This may be due to differences in the pathobiology of HIV-BL that requires further study and could lead to therapeutic advances in this patient group.
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Affiliation(s)
- Jessica Opie
- Division of Haematology, Department of Pathology, Faculty of Health Sciences, University of Cape Town and National Health Laboratory Service, Groote Schuur Hospital, Cape Town, South Africa.
| | - Katherine Antel
- Division of Clinical Haematology, Department of Medicine, Faculty of Health Sciences, University of Cape Town and Groote Schuur Hospital, Cape Town, South Africa
| | - Ania Koller
- Division of Haematology, Department of Pathology, Faculty of Health Sciences, University of Cape Town and National Health Laboratory Service, Groote Schuur Hospital, Cape Town, South Africa
| | - Nicolas Novitzky
- Division of Haematology, Department of Pathology, Faculty of Health Sciences, University of Cape Town and National Health Laboratory Service, Groote Schuur Hospital, Cape Town, South Africa
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The c-Myc/AKT1/TBX3 Axis Is Important to Target in the Treatment of Embryonal Rhabdomyosarcoma. Cancers (Basel) 2020; 12:cancers12020501. [PMID: 32098189 PMCID: PMC7072582 DOI: 10.3390/cancers12020501] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/17/2020] [Accepted: 02/18/2020] [Indexed: 02/06/2023] Open
Abstract
Rhabdomyosarcoma is a highly aggressive malignant cancer that arises from skeletal muscle progenitor cells and is the third most common solid tumour in children. Despite significant advances, rhabdomyosarcoma still presents a therapeutic challenge, and while targeted therapy has shown promise, there are limited options because the molecular drivers of rhabdomyosarcoma are poorly understood. We previously reported that the T-box transcription factor 3 (TBX3), which has been identified as a druggable target in many cancers, is overexpressed in rhabdomyosarcoma patient samples and cell lines. To identify new molecular therapeutic targets to treat rhabdomyosarcoma, this study investigates the potential oncogenic role(s) for TBX3 and the factors responsible for upregulating it in this cancer. To this end, rhabdomyosarcoma cell culture models in which TBX3 was either stably knocked down or overexpressed were established and the impact on key hallmarks of cancer were examined using growth curves, soft agar and scratch motility assays, as well as tumour-forming ability in nude mice. Our data show that TBX3 promotes substrate-dependent and -independent proliferation, migration and tumour formation. We further reveal that TBX3 is upregulated by c-Myc transcriptionally and AKT1 post-translationally. This study identifies c-Myc/AKT1/TBX3 as an important axis that could be targeted for the treatment of rhabdomyosarcoma.
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Srikanth S, Ramachandran S, Mohan S S. Construction of the gene regulatory network identifies MYC as a transcriptional regulator of SWI/SNF complex. Sci Rep 2020; 10:158. [PMID: 31932624 PMCID: PMC6957478 DOI: 10.1038/s41598-019-56844-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 12/17/2019] [Indexed: 12/21/2022] Open
Abstract
Precise positioning of nucleosomes at the gene regulatory elements mediated by the SWI/SNF family of remodelling complex is important for the transcriptional regulation of genes. A wide set of genes are either positively or negatively regulated by SWI/SNF. In higher eukaryotes, around thirty genes were found to code for SWI/SNF subunits. The construction of a gene regulatory network of SWI/SNF subunits identifies MYC as a common regulator for many of the SWI/SNF subunit genes. A meta-analysis study was conducted to investigate the MYC dependent regulation of SWI/SNF remodelling complex. Subunit information and the promoter sequences of the subunit genes were used to find the canonical E-box motif and its variants. Detailed analysis of mouse and human ChIP-Seq at the SWI/SNF subunit loci indicates the presence of MYC binding peaks overlapping with E-boxes. The co-expression correlation and the differential expression analysis of wt vs. MYC perturbed MEFs indicate the MYC dependent regulation of some of the SWI/SNF subunits. The extension of the analysis was done on MYC proficient and MYC deficient embryonic fibroblast cell lines, TGR1 and HO15, and in one of the MYC amplified cancer types, Medulloblastoma. A transcriptional regulatory feedback loop between MYC and SWI/SNF could be a major factor contributing to the aggressiveness of MYC dependent cancers.
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Affiliation(s)
- Srimari Srikanth
- School of Chemical & Biotechnology, SASTRA Deemed to be University, Tirumalaisamudram, Thanjavur, India
| | - Srimathy Ramachandran
- School of Chemical & Biotechnology, SASTRA Deemed to be University, Tirumalaisamudram, Thanjavur, India
| | - Suma Mohan S
- School of Chemical & Biotechnology, SASTRA Deemed to be University, Tirumalaisamudram, Thanjavur, India.
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Zhang Y, Shao Y, Lv Z, Zhang W, Zhao X, Guo M, Li C. Molecular cloning and functional characterization of MYC transcription factor in pathogen-challenged Apostichopus japonicus. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 102:103487. [PMID: 31472172 DOI: 10.1016/j.dci.2019.103487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/27/2019] [Accepted: 08/27/2019] [Indexed: 06/10/2023]
Abstract
Myelocytomatosis viral oncogene (MYC), a transcription factor in the MYC family, plays vital roles in vertebrate innate immunity by regulating related immune gene expressions. In this study, we cloned and characterized an MYC gene from sea cucumber Apostichopus japonicus via RNA-seq and RACE approaches (designated as AjMYC). A 2074 bp fragment representing the full-length cDNA of AjMYC was obtained. This gene includes an open reading frame (ORF) of 1296 bp encoding a polypeptide of 432 amino acid residues with the molecular weight of 48.85 kDa and theoretical pI of 7.22. SMART analysis indicated that AjMYC shares an MYC common HLH motif (354-406 aa) at the C-terminal. Spatial expression analysis revealed that AjMYC is constitutively expressed in all detected tissues with peak expression in the tentacle. Vibrio splendidus-challenged sea cucumber could significantly boost the expression of AjMYC transcripts by a 5.58-fold increase in the first stage. Similarly, 2.75- and 3.23-fold increases were detected in LPS-exposed coelomocytes at 1 and 24 h, respectively. In this condition, coelomocyte apoptotic rate increased from 11.98% to 56.23% at 1 h and to 59.08% at 24 h. MYC inhibitor treatment could not only inhibit the expression of AjMYC and Ajcaspase3, but also depress the coelomocyte apoptosis. Furthermore, AjMYC overexpression in EPC cells for 24 h also promoted the cell apoptosis rate from 21.31% to 45.85%. Collectively, all these results suggested that AjMYC is an important immune factor in coelomocyte apoptosis toward pathogen-challenged sea cucumber.
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Affiliation(s)
- Yi Zhang
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, PR China
| | - Yina Shao
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, PR China
| | - Zhimeng Lv
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, PR China
| | - Weiwei Zhang
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, PR China
| | - Xuelin Zhao
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, PR China
| | - Ming Guo
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, PR China
| | - Chenghua Li
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, PR China.
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Zhang YL, Deng CX, Zhou WF, Zhou LY, Cao QQ, Shen WY, Liang H, Chen ZF. Synthesis and in vitro antitumor activity evaluation of copper(II) complexes with 5-pyridin-2-yl-[1,3]dioxolo[4,5-g]isoquinoline derivatives. J Inorg Biochem 2019; 201:110820. [DOI: 10.1016/j.jinorgbio.2019.110820] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 08/16/2019] [Accepted: 09/01/2019] [Indexed: 02/07/2023]
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Somlyay M, Ledolter K, Kitzler M, Sandford G, Cobb SL, Konrat R. 19 F NMR Spectroscopy Tagging and Paramagnetic Relaxation Enhancement-Based Conformation Analysis of Intrinsically Disordered Protein Complexes. Chembiochem 2019; 21:696-701. [PMID: 31529763 DOI: 10.1002/cbic.201900453] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Indexed: 11/06/2022]
Abstract
The combination of 19 F NMR spectroscopy tagging and paramagnetic relaxation enhancement (PRE) NMR spectroscopy experiments was evaluated as a versatile method to probe protein-protein interactions and conformational changes of intrinsically disordered proteins upon complex formation. The feasibility of the approach is illustrated with an application to the Myc-Max protein complex; this is an oncogenic transcription factor that binds enhancer box DNA fragments. The single cysteine residue of Myc was tagged with highly fluorinated [19 F]3,5-bis(trifluoromethyl)benzyl bromide. Structural dynamics of the protein complex were monitored through intermolecular PREs between 19 F-Myc and paramagnetic (1-oxyl-2,2,5,5-tetramethyl-Δ3-pyrroline-3-methyl)methanethiosulfonate (MTSL)-tagged) Max. The 19 F R2 relaxation rates obtained with three differently MTSL-tagged Max mutants revealed novel insights into the differential structural dynamics of Myc-Max bound to DNA and the tumour suppressor breast cancer antigen 1. Given its ease of implementation, fruitful applications of this strategy to structural biology and inhibitor screening can be envisaged.
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Affiliation(s)
- Máté Somlyay
- Department of Structural and Computational Biology, Max F. Perutz Laboratories, University of Vienna, Campus Vienna Biocenter 5, 1030, Vienna, Austria
| | - Karin Ledolter
- Department of Structural and Computational Biology, Max F. Perutz Laboratories, University of Vienna, Campus Vienna Biocenter 5, 1030, Vienna, Austria
| | - Manuel Kitzler
- Department of Structural and Computational Biology, Max F. Perutz Laboratories, University of Vienna, Campus Vienna Biocenter 5, 1030, Vienna, Austria
| | - Graham Sandford
- Department of Chemistry, Durham University, Stockton Road, DH1 3LE, Durham, UK
| | - Steven L Cobb
- Department of Chemistry, Durham University, Stockton Road, DH1 3LE, Durham, UK
| | - Robert Konrat
- Department of Structural and Computational Biology, Max F. Perutz Laboratories, University of Vienna, Campus Vienna Biocenter 5, 1030, Vienna, Austria
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Yu N, Chen P, Wang Q, Liang M, Qiu J, Zhou P, Yang M, Yang P, Wu Y, Han X, Ge J, Zhuang J, Yu K. Histone deacetylase inhibitors differentially regulate c-Myc expression in retinoblastoma cells. Oncol Lett 2019; 19:460-468. [PMID: 31897159 PMCID: PMC6923973 DOI: 10.3892/ol.2019.11111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 10/22/2019] [Indexed: 12/15/2022] Open
Abstract
Retinoblastoma (RB) is the most prevalent childhood intraocular cancer type. Previous studies have demonstrated that c-myc (a proto-oncogene) is associated with tumorigenesis. However, at present, the influence of the expression profile and bioactivity of c-Myc on RB occurrence and progression is yet to be characterised. Notably, the present study demonstrated that c-myc is downregulated in the RB cell line WERI-Rb1. However, treatment with the histone deacetylase (HDAC) inhibitor trichostatin A (TSA) was revealed to significantly upregulate the expression of c-Myc mRNA and protein in WERI-Rb1 cells. Moreover, TSA increased the activity of the c-myc promoter in WERI-Rb1 cells, and the expression of c-Myc was also regulated by other HDAC inhibitors, including vorinostat (SAHA), valproic acid sodium salt (VPA) and entinostat. Notably, although c-myc was silenced in the Y79 cell line, the HDAC inhibitor TSA did not induce upregulation of mRNA and protein in Y79 cells. By contrast, certain HDAC inhibitors (TSA, VPA and SAHA) were discovered to significantly decrease the activity of the c-myc promoter in Y79 cells. Furthermore, the current data indicated that exogenous c-myc expression has a mild inhibitory effect on WERI-Rb1 and Y79 cell viability. Therefore, the present study revealed novel insights into the expression mechanism and bioactivity of c-Myc in RB cells.
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Affiliation(s)
- Na Yu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Pei Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Qiyun Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Meixin Liang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Jin Qiu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Pan Zhou
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Meng Yang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Panyang Yang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Yihui Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Xiaokun Han
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Jian Ge
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Jing Zhuang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Keming Yu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
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Genetics of Pituitary Tumours. EXPERIENTIA. SUPPLEMENTUM 2019. [PMID: 31588533 DOI: 10.1007/978-3-030-25905-1_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2023]
Abstract
Pituitary tumours are relatively common in the general population. Most often they occur sporadically, with somatic mutations accounting for a significant minority of somatotroph and corticotroph adenomas. Pituitary tumours can also develop secondary to germline mutations as part of a complex syndrome or as familial isolated pituitary adenomas. Tumours occurring in a familial setting may present at a younger age and can behave more aggressively with resistance to treatment. This chapter will focus on the genetics and molecular pathogenesis of pituitary tumours.
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Hu J, Tian CQ, Damaneh MS, Li Y, Cao D, Lv K, Yu T, Meng T, Chen D, Wang X, Chen L, Li J, Song SS, Huan XJ, Qin L, Shen J, Wang YQ, Miao ZH, Xiong B. Structure-Based Discovery and Development of a Series of Potent and Selective Bromodomain and Extra-Terminal Protein Inhibitors. J Med Chem 2019; 62:8642-8663. [PMID: 31490070 DOI: 10.1021/acs.jmedchem.9b01094] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BRD4 has recently emerged as a promising drug target. Therefore, identifying novel inhibitors with distinct properties could enrich their use in anticancer treatment. Guided by the cocrystal structure of hit compound 4 harboring a five-membered-ring linker motif, we quickly identified lead compound 7, which exhibited good antitumor effects in an MM.1S xenograft model by oral administration. Encouraged by its high potency and interesting scaffold, we performed further lead optimization to generate a novel potent series of bromodomain and extra-terminal (BET) inhibitors with a (1,2,4-triazol-5-yl)-3,4-dihydroquinoxalin-2(1H)-one structure. Among them, compound 19 was found to have the best balance of activity, stability, and antitumor efficacy. After confirming its low brain penetration, we conducted comprehensive preclinical studies, including a multiple-species pharmacokinetics profile, extensive cellular mechanism studies, hERG assay, and in vivo antitumor growth effect testing, and we found that compound 19 is a potential BET protein drug candidate for the treatment of cancer.
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Affiliation(s)
- Jianping Hu
- University of Chinese Academy of Sciences , NO.19A Yuquan Road , Beijing 100049 , China
| | - Chang-Qing Tian
- University of Chinese Academy of Sciences , NO.19A Yuquan Road , Beijing 100049 , China
| | | | | | | | - Kaikai Lv
- University of Chinese Academy of Sciences , NO.19A Yuquan Road , Beijing 100049 , China
| | | | | | | | | | | | | | | | | | - Lihuai Qin
- Center for Chemical Biology and Drug Discovery, Department of Pharmacological Sciences, Tisch Cancer Institute , Icahn School of Medicine at Mount Sinai , New York , New York 10029 , United States
| | | | - Ying-Qing Wang
- University of Chinese Academy of Sciences , NO.19A Yuquan Road , Beijing 100049 , China
| | - Ze-Hong Miao
- University of Chinese Academy of Sciences , NO.19A Yuquan Road , Beijing 100049 , China
| | - Bing Xiong
- University of Chinese Academy of Sciences , NO.19A Yuquan Road , Beijing 100049 , China
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Bian B, Juiz NA, Gayet O, Bigonnet M, Brandone N, Roques J, Cros J, Wang N, Dusetti N, Iovanna J. Pancreatic Cancer Organoids for Determining Sensitivity to Bromodomain and Extra-Terminal Inhibitors (BETi). Front Oncol 2019; 9:475. [PMID: 31231611 PMCID: PMC6560163 DOI: 10.3389/fonc.2019.00475] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 05/17/2019] [Indexed: 12/11/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a heterogeneous disease, therefore stratification of patients is essential to predict their responses to therapies and to choose the best treatment. PDAC-derived organoids were produced from PDTX and Endoscopic Ultrasound-Guided Fine-Needle Aspiration (EUS-FNA) biopsies. A signature based on 16 genes targets of the c-MYC oncogene was applied to classify samples into two sub-groups with distinctive phenotypes named MYC-high and MYC-low. The analysis of 9 PDTXs and the corresponding derived organoids revealed that this signature which was previously designed from PDTX is transferable to the organoid model. Primary organoids from 24 PDAC patients were treated with NHWD-870 or JQ1, two inhibitors of c-MYC transcription. Notably, the comparison of their effect between the two sub-groups showed that both compounds are more efficient in MYC-high than in MYC-low samples, being NHWD-870 the more potent treatment. In conclusion, this study shows that the molecular signatures could be applied to organoids obtained directly from PDAC patients to predict the treatment response and could help to take the more appropriate therapeutic decision for each patient in a clinical timeframe.
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Affiliation(s)
- Benjamin Bian
- Centre de Recherche en Cancérologie de Marseille (CRCM), INSERM U1068, CNRS UMR 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, France
| | - Natalia Anahi Juiz
- Centre de Recherche en Cancérologie de Marseille (CRCM), INSERM U1068, CNRS UMR 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, France
| | - Odile Gayet
- Centre de Recherche en Cancérologie de Marseille (CRCM), INSERM U1068, CNRS UMR 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, France
| | - Martin Bigonnet
- Centre de Recherche en Cancérologie de Marseille (CRCM), INSERM U1068, CNRS UMR 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, France
| | - Nicolas Brandone
- Centre de Recherche en Cancérologie de Marseille (CRCM), INSERM U1068, CNRS UMR 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, France
| | - Julie Roques
- Centre de Recherche en Cancérologie de Marseille (CRCM), INSERM U1068, CNRS UMR 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, France
| | - Jérôme Cros
- Pathology Department, Beaujon Hospital, Assistance Publique-Hôpitaux de Paris, UMR 1149, Inflammation Research Center, INSERM - Paris Diderot University, Paris, France
| | - Nenghui Wang
- Ningbo Wenda Pharma Technology Ltd., Zhejiang, China
| | - Nelson Dusetti
- Centre de Recherche en Cancérologie de Marseille (CRCM), INSERM U1068, CNRS UMR 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, France
| | - Juan Iovanna
- Centre de Recherche en Cancérologie de Marseille (CRCM), INSERM U1068, CNRS UMR 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, France
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Zhao R, Zhao L, Xu X, Xu H. Analysis of microRNA expression profiles reveals a 5‑microRNA prognostic signature for predicting overall survival time in patients with gastric adenocarcinoma. Oncol Rep 2019; 41:2775-2789. [PMID: 30864737 PMCID: PMC6448084 DOI: 10.3892/or.2019.7048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 01/30/2019] [Indexed: 01/04/2023] Open
Abstract
There is growing evidence supporting dysregulated microRNAs (miRNAs) as potential prognostic biomarkers in cancer. The present study aimed to identify an miRNA model set with prognostic power for patients with gastric adenocarcinoma. miRNA‑seq data from 155 patients and 37 controls were downloaded from The Cancer Genome Atlas (TCGA) database for a comprehensive analysis of miRNA expression profiles and were used as training data. A total of 5 prognostic miRNAs, which have not been previously reported, were identified using univariate and multivariate Cox regression analyses. A separate 155‑patient TCGA cohort was used as a validation set for evaluation of the risk model. Patients in the training set were assigned into high‑ and low‑risk groups according to the 5‑miRNA signature risk scores. Kaplan‑Meier survival analyses demonstrated that patients with high risk scores had significantly shorter survival times than those with low risk scores. The risk model validation confirmed the prognostic ability of this 5‑miRNA signature in predicting the risk status of patients. Stratification analysis for clinical prognostic variables demonstrated recurrence and age were significant prognostic factors in the low‑ and high‑risk groups, respectively. In conclusion, the present 5‑miRNA signature is a potential independent risk factor for patient outcomes. The risk model based on the 5‑miRNA signature performed well in predicting overall survival time in patients with gastric adenocarcinoma.
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Affiliation(s)
- Ruihong Zhao
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Lei Zhao
- Department of Medical Insurance Management, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Xu Xu
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Hong Xu
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
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Gong J, Tian J, Lou J, Wang X, Ke J, Li J, Yang Y, Gong Y, Zhu Y, Zou D, Peng X, Yang N, Mei S, Zhong R, Chang J, Miao X. A polymorphic MYC response element in KBTBD11 influences colorectal cancer risk, especially in interaction with an MYC-regulated SNP rs6983267. Ann Oncol 2019; 29:632-639. [PMID: 29267898 DOI: 10.1093/annonc/mdx789] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Background MYC is a well-established cancer driver gene regulating the expression of numerous genes, indicating that polymorphisms in MYC response elements could affect tumorigenesis through altering MYC regulation. We performed integrative multistage study to evaluate the effects of variants in MYC response elements and colorectal cancer (CRC) risk. Patients and methods We systematically integrated ChIP-Seq, DNase-Seq and transcription factor motif data to screen variants with potential ability to affect the MYC binding affinity. Then, we conducted a two-stage case-control study, totally consisting of 4830 CRC cases and 4759 controls in Chinese population to identify risk polymorphisms and interactions. The effects of risk variants were confirmed by functional assays in CRC LoVo, SW480 and HCT15 cells. Results We identified a novel polymorphism rs11777210 in KBTBD11 significantly associated with CRC susceptibility (P = 2.43 × 10-12). Notably, we observed a significant interaction between rs11777210 and MYC nearby rs6983267 (P-multi = 0.003, P-add = 0.005), subjects carrying rs6983267 GG and rs11777210 CC genotypes showing higher susceptibility to CRC (2.83-fold) than those carrying rs6983267 TT and rs11777210 TT genotypes. We further demonstrated that rs6983267 T > G increased MYC expression, and MYC bound to and negatively regulated KBTBD11 expression when the rs11777210 C risk allele was present. KBTBD11 was downregulated in tumor tissues, and KBTBD11 knockdown promoted cell proliferation and inhibited cell apoptosis. Conclusion The rs11777210 is a potential predictive biomarker of CRC susceptibility, and KBTBD11 functions as a putative tumor suppressor in tumorigenesis. Our study highlighted the high CRC risk of people carrying rs6983267 G and rs11777210 C alleles, and provided possible biological mechanism of the interaction.
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Affiliation(s)
- J Gong
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Tian
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Lou
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - X Wang
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Ke
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Li
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Yang
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Gong
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Zhu
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - D Zou
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - X Peng
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - N Yang
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - S Mei
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - R Zhong
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Chang
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - X Miao
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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50
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SET protein accumulation prevents cell death in head and neck squamous cell carcinoma through regulation of redox state and autophagy. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2019; 1866:623-637. [DOI: 10.1016/j.bbamcr.2019.01.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 01/06/2019] [Accepted: 01/08/2019] [Indexed: 12/29/2022]
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