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Ravirala S, Sura MB, Murugesan P, Tangutur AD, Ponnapalli MG. Click linker: efficient and high yielding synthesis of a new family of kojic acid congeners as cytotoxic agents. Nat Prod Res 2023; 37:1161-1167. [PMID: 34720015 DOI: 10.1080/14786419.2021.1998897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Highly efficient methodology was developed for the construction of functionalized Kojic acid involving Click linker via 1,3-dipolar cycloaddition and their cytotoxicity against MCF-7, MIAPaCa-2 and DU145 mammalian cell lines were evaluated. Preliminary studies on structure-activity-relationship (SAR) revealed that substitution at C-2 of kojic acid as well as C-5 of 1,2,3-triazole motif played a major role in the activity profile. Kojic acid 1,2,3-triazole analogue 3 b containing an alkyl chain (n = 6) exhibited two fold potent activity than the parent compound, kojic acid against MCF-7 and MIA PaCa-2 cell lines. It induced apoptosis in these cell lines via ID1/PARP1 mediated pathway. The structures of the new analogues of kojic acid 1,2,3-triazole were confirmed by the detailed spectroscopic data analysis.
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Affiliation(s)
- Saidulu Ravirala
- Centre for Natural Products and Traditional Knowledge, Indian Institute of Chemical Technology, Hyderabad, India
| | - Madhu Babu Sura
- Centre for Natural Products and Traditional Knowledge, Indian Institute of Chemical Technology, Hyderabad, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Periyasamy Murugesan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.,Applied biology Department, Indian Institute of Chemical Technology, Hyderabad, India
| | - Anjana Devi Tangutur
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.,Applied biology Department, Indian Institute of Chemical Technology, Hyderabad, India
| | - Mangala Gowri Ponnapalli
- Centre for Natural Products and Traditional Knowledge, Indian Institute of Chemical Technology, Hyderabad, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Tazawa H, Shigeyasu K, Noma K, Kagawa S, Sakurai F, Mizuguchi H, Kobayashi H, Imamura T, Fujiwara T. Tumor‐targeted fluorescence labeling systems for cancer diagnosis and treatment. Cancer Sci 2022; 113:1919-1929. [PMID: 35398956 PMCID: PMC9207361 DOI: 10.1111/cas.15369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 03/25/2022] [Accepted: 04/02/2022] [Indexed: 11/28/2022] Open
Abstract
Conventional imaging techniques are available for clinical identification of tumor sites. However, detecting metastatic tumor cells that are spreading from primary tumor sites using conventional imaging techniques remains difficult. In contrast, fluorescence‐based labeling systems are useful tools for detecting tumor cells at the single‐cell level in cancer research. The ability to detect fluorescent‐labeled tumor cells enables investigations of the biodistribution of tumor cells for the diagnosis and treatment of cancer. For example, the presence of fluorescent tumor cells in the peripheral blood of cancer patients is a predictive biomarker for early diagnosis of distant metastasis. The elimination of fluorescent tumor cells without damaging normal tissues is ideal for minimally invasive treatment of cancer. To capture fluorescent tumor cells within normal tissues, however, tumor‐specific activated target molecules are needed. This review focuses on recent advances in tumor‐targeted fluorescence labeling systems, in which indirect reporter labeling using tumor‐specific promoters is applied to fluorescence labeling of tumor cells for the diagnosis and treatment of cancer. Telomerase promoter‐dependent fluorescence labeling using replication‐competent viral vectors produces fluorescent proteins that can be used to detect and eliminate telomerase‐positive tumor cells. Tissue‐specific promoter‐dependent fluorescence labeling enables identification of specific tumor cells. Vimentin promoter‐dependent fluorescence labeling is a useful tool for identifying tumor cells that undergo epithelial–mesenchymal transition (EMT). The evaluation of tumor cells undergoing EMT is important for accurately assessing metastatic potential. Thus, tumor‐targeted fluorescence labeling systems represent novel platforms that enable the capture of tumor cells for the diagnosis and treatment of cancer.
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Affiliation(s)
- Hiroshi Tazawa
- Department of Gastroenterological Surgery Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences Okayama Japan
- Center for Innovative Clinical Medicine Okayama University Hospital Okayama Japan
| | - Kunitoshi Shigeyasu
- Department of Gastroenterological Surgery Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Kazuhiro Noma
- Department of Gastroenterological Surgery Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Shunsuke Kagawa
- Department of Gastroenterological Surgery Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences Okayama Japan
- Minimally Invasive Therapy Center Okayama University Hospital Okayama Japan
| | - Fuminori Sakurai
- Laboratory of Biochemistry and Molecular Biology Graduate School of Pharmaceutical Sciences Osaka University Osaka Japan
| | - Hiroyuki Mizuguchi
- Laboratory of Biochemistry and Molecular Biology Graduate School of Pharmaceutical Sciences Osaka University Osaka Japan
| | - Hisataka Kobayashi
- Molecular Imaging Branch Center for Cancer Research National Cancer Institute National Institutes of Health Bethesda MD USA
| | - Takeshi Imamura
- Department of Molecular Medicine for Pathogenesis Ehime University Graduate School of Medicine Ehime Japan
| | - Toshiyoshi Fujiwara
- Department of Gastroenterological Surgery Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences Okayama Japan
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3
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Han L, Cui D, Li B, Xu WW, Lam AKY, Chan KT, Zhu Y, Lee NP, Law SY, Guan XY, Qin YR, Chan KW, Ma S, Tsao SW, Cheung AL. MicroRNA-338-5p reverses chemoresistance and inhibits invasion of esophageal squamous cell carcinoma cells by targeting Id-1. Cancer Sci 2019; 110:3677-3688. [PMID: 31646712 PMCID: PMC6890449 DOI: 10.1111/cas.14220] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 10/15/2019] [Accepted: 10/20/2019] [Indexed: 12/13/2022] Open
Abstract
5-Fluorouracil (5-FU) is a chemotherapeutic agent commonly used to treat esophageal squamous cell carcinoma (ESCC), but acquisition of chemoresistance frequently occurs and the underlying mechanisms are not fully understood. We found that microRNA (miR)-338-5p was underexpressed in ESCC cells with acquired 5-FU chemoresistance. Forced expression of miR-338-5p in these cells resulted in downregulation of Id-1, and restoration of both in vitro and in vivo sensitivity to 5-FU treatment. The effects were abolished by reexpression of Id-1. In contrast, miR-338-5p knockdown induced 5-FU resistance in chemosensitive esophageal cell lines, and knockdown of both miR-338-5p and Id-1 resensitized the cells to 5-FU. In addition, miR-338-5p had suppressive effects on migration and invasion of ESCC cells. Luciferase reporter assay confirmed a direct interaction between miR-338-5p and the 3'-UTR of Id-1. We also found that miR-338-5p was significantly downregulated in tumor tissue and serum samples of patients with ESCC. Notably, low serum miR-338-5p expression level was associated with poorer survival and poor response to 5-FU/cisplatin-based neoadjuvant chemoradiotherapy. In summary, we found that miR-338-5p can modulate 5-FU chemoresistance and inhibit invasion-related functions in ESCC by negatively regulating Id-1, and that serum miR-338-5p could be a novel noninvasive prognostic and predictive biomarker in ESCC.
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Affiliation(s)
- Liang Han
- Li Ka ShingFaculty of MedicineSchool of Biomedical SciencesThe University of Hong KongHong Kong SARChina
| | - Di Cui
- Li Ka ShingFaculty of MedicineSchool of Biomedical SciencesThe University of Hong KongHong Kong SARChina
| | - Bin Li
- Li Ka ShingFaculty of MedicineSchool of Biomedical SciencesThe University of Hong KongHong Kong SARChina
- Present address:
College of Life Science and TechnologyJinan UniversityGuangzhouChina
| | - Wen Wen Xu
- Li Ka ShingFaculty of MedicineSchool of Biomedical SciencesThe University of Hong KongHong Kong SARChina
- Present address:
Institute of Tumor PharmacologyCollege of PharmacyJinan UniversityChina
| | - Alfred King Y. Lam
- Department of PathologyGriffith Medical School and Menzies Health Institute QueenslandGold CoastQLDAustralia
| | - Kin Tak Chan
- Department of SurgeryThe University of Hong KongHong Kong SARChina
| | - Yun Zhu
- Li Ka ShingFaculty of MedicineSchool of Biomedical SciencesThe University of Hong KongHong Kong SARChina
| | - Nikki P.Y. Lee
- Department of SurgeryThe University of Hong KongHong Kong SARChina
| | - Simon Y.K. Law
- Department of SurgeryThe University of Hong KongHong Kong SARChina
| | - Xin Yuan Guan
- Department of Clinical OncologyLi Ka Shing Faculty of MedicineThe University of Hong KongHong Kong SARChina
| | - Yan Ru Qin
- Department of Clinical OncologyFirst Affiliated HospitalZhengzhou UniversityZhengzhouChina
| | - Kwok Wah Chan
- Department of PathologyLi Ka Shing Faculty of MedicineThe University of Hong KongHong Kong SARChina
| | - Stephanie Ma
- Li Ka ShingFaculty of MedicineSchool of Biomedical SciencesThe University of Hong KongHong Kong SARChina
| | - Sai Wah Tsao
- Li Ka ShingFaculty of MedicineSchool of Biomedical SciencesThe University of Hong KongHong Kong SARChina
| | - Annie L.M. Cheung
- Li Ka ShingFaculty of MedicineSchool of Biomedical SciencesThe University of Hong KongHong Kong SARChina
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4
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Li XF, Ling K, Yan XJ. Significance of expression of ID-1, ID-3, and NF-κB in colorectal adenocarcinoma. Shijie Huaren Xiaohua Zazhi 2018; 26:1307-1312. [DOI: 10.11569/wcjd.v26.i21.1307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM To detect the expression of inhibitor of differentiation/DNA binding (ID)-1, ID-3, and nuclear factor-kappa B (NF-κB) in colorectal adenocarcinoma and to analyze their clinical significance.
METHODS Eighty-eight colorectal adenocarcinoma tissues, 43 colorectal high-grade intraepithelial neoplasia tissues, and 34 normal colonic mucosal tissues (>5 cm away from the edge of tumor) were collected. Expression of ID-1, ID-3, and NF-κB in these tissue samples was detected by immunochemistry.
RESULTS Expression of ID-1, ID-3, and NF-κB differed significantly between colorectal adenocarcinoma tissues and control tissues. Expression of ID-1, ID-3, and NF-κB was correlated with proliferation index and lesion depth. Expression of ID-1 and ID-3 was correlated with tumor differentiation. Expression of NF-κB was correlated with metastasis. There was a positive correlation between ID-1 and ID-3 expression in colorectal adenocarcinoma tissues.
CONCLUSION High expression of ID-1, ID-3 and NF-κB can promote the formation and progression of colorectal adenocarcinoma. ID-1 and ID-3 may have a synergistic effect.
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Affiliation(s)
- Xue-Feng Li
- Department of Internal Medicine, the Second People Hospital of Fuyang District, Hangzhou 311404, Zhejiang Province, China
| | - Kai Ling
- Department of Gastroenterology, the Second People Hospital of Fuyang District, Hangzhou 311404, Zhejiang Province, China
| | - Xiao-Jun Yan
- Department of Gastroenterology, the Second People Hospital of Fuyang District, Hangzhou 311404, Zhejiang Province, China
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Abstract
Inhibitors of DNA binding and cell differentiation (Id) proteins are members of the large family of the helix-loop-helix (HLH) transcription factors, but they lack any DNA-binding motif. During development, the Id proteins play a key role in the regulation of cell-cycle progression and cell differentiation by modulating different cell-cycle regulators both by direct and indirect mechanisms. Several Id-protein interacting partners have been identified thus far, which belong to structurally and functionally unrelated families, including, among others, the class I and II bHLH transcription factors, the retinoblastoma protein and related pocket proteins, the paired-box transcription factors, and the S5a subunit of the 26 S proteasome. Although the HLH domain of the Id proteins is involved in most of their protein-protein interaction events, additional motifs located in their N-terminal and C-terminal regions are required for the recognition of diverse protein partners. The ability of the Id proteins to interact with structurally different proteins is likely to arise from their conformational flexibility: indeed, these proteins contain intrinsically disordered regions that, in the case of the HLH region, undergo folding upon self- or heteroassociation. Besides their crucial role for cell-fate determination and cell-cycle progression during development, other important cellular events have been related to the Id-protein expression in a number of pathologies. Dysregulated Id-protein expression has been associated with tumor growth, vascularization, invasiveness, metastasis, chemoresistance and stemness, as well as with various developmental defects and diseases. Herein we provide an overview on the structural properties, mode of action, biological function and therapeutic potential of these regulatory proteins.
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Affiliation(s)
- Cornelia Roschger
- Department of Molecular Biology, University of Salzburg, Billrothstrasse 11, Salzburg, 5020, Austria
| | - Chiara Cabrele
- Department of Molecular Biology, University of Salzburg, Billrothstrasse 11, Salzburg, 5020, Austria.
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Roschger C, Cabrele C. The Id-protein family in developmental and cancer-associated pathways. Cell Commun Signal 2017; 15:7. [PMID: 28122577 PMCID: PMC5267474 DOI: 10.1186/s12964-016-0161-y] [Citation(s) in RCA: 122] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 12/29/2016] [Indexed: 01/15/2023] Open
Abstract
Inhibitors of DNA binding and cell differentiation (Id) proteins are members of the large family of the helix-loop-helix (HLH) transcription factors, but they lack any DNA-binding motif. During development, the Id proteins play a key role in the regulation of cell-cycle progression and cell differentiation by modulating different cell-cycle regulators both by direct and indirect mechanisms. Several Id-protein interacting partners have been identified thus far, which belong to structurally and functionally unrelated families, including, among others, the class I and II bHLH transcription factors, the retinoblastoma protein and related pocket proteins, the paired-box transcription factors, and the S5a subunit of the 26 S proteasome. Although the HLH domain of the Id proteins is involved in most of their protein-protein interaction events, additional motifs located in their N-terminal and C-terminal regions are required for the recognition of diverse protein partners. The ability of the Id proteins to interact with structurally different proteins is likely to arise from their conformational flexibility: indeed, these proteins contain intrinsically disordered regions that, in the case of the HLH region, undergo folding upon self- or heteroassociation. Besides their crucial role for cell-fate determination and cell-cycle progression during development, other important cellular events have been related to the Id-protein expression in a number of pathologies. Dysregulated Id-protein expression has been associated with tumor growth, vascularization, invasiveness, metastasis, chemoresistance and stemness, as well as with various developmental defects and diseases. Herein we provide an overview on the structural properties, mode of action, biological function and therapeutic potential of these regulatory proteins.
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Affiliation(s)
- Cornelia Roschger
- Department of Molecular Biology, University of Salzburg, Billrothstrasse 11, Salzburg, 5020, Austria
| | - Chiara Cabrele
- Department of Molecular Biology, University of Salzburg, Billrothstrasse 11, Salzburg, 5020, Austria.
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Aztopal N, Cevatemre B, Sarimahmut M, Ari F, Dere E, Ozel MZ, Firat M, Ulukaya E. Pelargonium quercetorum Agnew induces apoptosis without PARP or cytokeratin 18 cleavage in non-small cell lung cancer cell lines. Oncol Lett 2016; 12:1429-1437. [PMID: 27446448 PMCID: PMC4950832 DOI: 10.3892/ol.2016.4779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 06/02/2016] [Indexed: 01/11/2023] Open
Abstract
Pelargonium species have various uses in folk medicine as traditional remedies, and several of them have been screened for their biological activity, including anticancer. Pelargonium quercetorum Agnew (P. quercetorum) is traditionally used for its anthelminthic activity. However, little is known about its biological activity or its effect on cancer cells. The aim of the present study was to determine the cytotoxic activity of P. quercetorum extract on lung cancer cell lines with varying properties. Following the analyses of its chemical composition, the cytotoxic activity was screened by the adenosine triphosphate viability test. M30-Apoptosense® and M65 EpiDeath® enzyme-linked immunosorbent assays were used to determine the cell death mode (apoptosis vs. necrosis). For apoptosis, additional methods, including Annexin-V-fluorescein isothiocyanate (FITC) and Hoechst 33342 staining, were employed. The cleavage of poly (adenosine diphosphate-ribose) polymerase (PARP) was assayed by western blotting to further dissect the apoptosis mechanism. The methanol extract of P. quercetorum caused cytotoxic activity in a dose-dependent manner. The mode of cell death was apoptosis, as evidenced by the positive staining of the cells for Annexin-V-FITC and the presence of pyknotic nuclei. Notably, neither PARP cleavage nor cytokeratin 18 fragmentation were observed. P.quercetorum caused cell death by an apoptosis mechanism that is slightly different from classical apoptosis. Therefore, future in vivo experiments are required for further understanding of the effect of this plant on cancer cells.
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Affiliation(s)
- Nazlihan Aztopal
- Department of Biology, Faculty of Science and Arts, Uludag University, Bursa 16059, Turkey
| | - Buse Cevatemre
- Department of Biology, Faculty of Science and Arts, Uludag University, Bursa 16059, Turkey
| | - Mehmet Sarimahmut
- Department of Biology, Faculty of Science and Arts, Uludag University, Bursa 16059, Turkey
| | - Ferda Ari
- Department of Biology, Faculty of Science and Arts, Uludag University, Bursa 16059, Turkey
| | - Egemen Dere
- Department of Biology, Faculty of Science and Arts, Uludag University, Bursa 16059, Turkey
| | | | - Mehmet Firat
- Department of Biology, Yuzuncu Yil University, Van 65080, Turkey
| | - Engin Ulukaya
- Department of Medical Biochemistry, Faculty of Medicine, Uludag University, Bursa 16059, Turkey
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8
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Weiler S, Ademokun JA, Norton JD. ID helix-loop-helix proteins as determinants of cell survival in B-cell chronic lymphocytic leukemia cells in vitro. Mol Cancer 2015; 14:30. [PMID: 25644253 PMCID: PMC4320821 DOI: 10.1186/s12943-014-0286-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 12/30/2014] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Members of the inhibitor of DNA-binding (ID) family of helix-loop-helix proteins have been causally implicated in the pathogenesis of several types of B-cell lineage malignancy, either on the basis of mutation or by altered expression. B-cell chronic lymphocytic leukemia encompasses a heterogeneous group of disorders and is the commonest leukaemia type in the Western world. In this study, we have investigated the pathobiological functions of the ID2 and ID3 proteins in this disease with an emphasis on their role in regulating leukemic cell death/survival. METHODS Bioinformatics analysis of microarray gene expression data was used to investigate expression of ID2/ID3 in leukemic versus normal B cells, their association with clinical course of disease and molecular sub-type and to reconstruct a gene regulatory network using the 'maximum information coefficient' (MIC) for target gene inference. In vitro cultured primary leukemia cells, either in isolation or co-cultured with accessory vascular endothelial cells, were used to investigate ID2/ID3 protein expression by western blotting and to assess the cytotoxic response of different drugs (fludarabine, chlorambucil, ethacrynic acid) by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. ID2/ID3 protein levels in primary leukemia cells and in MEC1 cells were manipulated by transduction with siRNA reagents. RESULTS Datamining showed that the expression profiles of ID2 and ID3 are associated with distinct pathobiological features of disease and implicated both genes in regulating cell death/survival by targeting multiple non-overlapping sets of apoptosis effecter genes. Consistent with microarray data, the overall pattern of ID2/ID3 protein expression in relation to cell death/survival responses of primary leukemia cells was suggestive of a pro-survival function for both ID proteins. This was confirmed by siRNA knock-down experiments in MEC1 cells and in primary leukemia cells, but with variability in the dependence of leukemic cells from different patients on ID protein expression for cell survival. Vascular endothelial cells rescued leukemia cells from spontaneous and cytotoxic drug-induced cell death at least in part, via an ID protein-coupled redox-dependent mechanism. CONCLUSIONS Our study provides evidence for a pro-survival function of the ID2/ID3 proteins in chronic lymphocytic leukemia cells and also highlights these proteins as potential determinants of the pathobiology of this disorder.
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Affiliation(s)
- Sarah Weiler
- School of Biological Sciences, University of Essex, Colchester, Essex, CO4 3SQ, UK.
| | - Jolaolu A Ademokun
- Department of Haematology, Ipswich Hospital NHS Trust, Heath Road, Ipswich, Suffolk, IP4 5PD, UK.
| | - John D Norton
- School of Biological Sciences, University of Essex, Colchester, Essex, CO4 3SQ, UK.
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9
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Beisswenger M, Cabrele C. Self-recognition behavior of a helix-loop-helix domain by a fragment scan. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2014; 1844:1675-83. [PMID: 24981796 DOI: 10.1016/j.bbapap.2014.06.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 06/09/2014] [Accepted: 06/17/2014] [Indexed: 10/25/2022]
Abstract
The inhibitors of DNA binding Id1-4 are helix-loop-helix (HLH) proteins that exert their biological function by interacting with members of the basic-HLH (bHLH) transcription-factor family. The HLH domains of the Id and bHLH proteins allow both self- and hetero-association. Due to their abnormal expression in cancer cells, the Id proteins are potential protein targets for cancer treatment. Suitable Id-protein inactivators should promote self-association and/or prevent hetero-association. In this work we evaluated the ability of the Id-protein HLH domain to recognize itself in form of short sequences extracted from the helical and loop regions. We performed a peptide scan of the Id1 HLH domain 64-106 based on three-residue overlapping octapeptides. Interaction of each octapeptide with the natively folded Id1 HLH domain was investigated by CD and fluorescence spectroscopy. The results from both techniques showed that the helix-based but not the loop-based octapeptides interacted with the Id1 HLH domain in the low-micromolar range. In contrast, a nitrotyrosine-containing analog of the Id1 HLH region, which was unable to reproduce the native-like conformation, quenched only the 2-amino-benzoyl-(Abz)-labeled loop-based octapeptides. This opposite self-recognition pattern suggests that the short helix-based and loop-based sequences should be able to distinguish different folding states of the Id1 HLH domain. This feature may be biologically relevant, as the Id proteins are predicted to behave as intrinsically disordered proteins, being in equilibrium between rapidly exchanging monomeric conformations and structurally better-defined homo-/heterodimers displaying the parallel four-helix bundle.
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Affiliation(s)
- Michael Beisswenger
- Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstrasse 150, 44801 Bochum, Germany
| | - Chiara Cabrele
- Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstrasse 150, 44801 Bochum, Germany; Department of Molecular Biology, Division of Chemistry and Bioanalytics, Paris-Lodron University Salzburg, Billrothstrasse 11, 5020 Salzburg, Austria.
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10
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Inhibitor of differentiation 1 is a candidate prognostic marker in multicentric Castleman’s disease. Ann Hematol 2014; 93:1177-83. [DOI: 10.1007/s00277-014-2024-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Accepted: 01/27/2014] [Indexed: 02/02/2023]
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11
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Ghasemi R, Ghaffari SH, Momeny M, Pirouzpanah S, Yousefi M, Malehmir M, Alimoghaddam K, Ghavamzadeh A. Multitargeting and antimetastatic potentials of silibinin in human HepG-2 and PLC/PRF/5 hepatoma cells. Nutr Cancer 2013; 65:590-9. [PMID: 23659451 DOI: 10.1080/01635581.2013.770043] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Hepatocellular carcinoma (HCC) is the most common sort of primary liver malignancy with poor prognosis. This study aimed at examining the effects of silibinin (a putative antimetastatic agent) on some transcriptional markers mechanistically related to HCC recurrence and metastasis in HepG-2 [hepatitis B virus (HBV)-negative and P53 intact) and PLC/PRF/5 (HBV-positive and P53 mutated) cells. The expression of 27 genes in response to silibinin was evaluated by real-time RT-PCR. The MMP gelatinolytic assay and microculture tetrazolium test (MTT) were tested. Silibinin was capable of suppressing the transcriptional levels of ANGPT2, ATP6L, CAP2, CCR6, CCR7, CLDN-10, cortactin, CXCR4, GLI2, HK2, ID1, KIAA0101, mortalin, PAK1, RHOA, SPINK1, and STMN1 as well as the enzymatic activity of MMP-2 but promoted the transcripts of CREB3L3, DDX3X, and PROX1 in both cells. Some significant differences between the cells in response to silibinin were detected that might be related to the differences of the cells in terms of HBV infection and/or P53 mutation, suggesting the possible influence of silibinin on HCC through biological functions of these 2 prognostic factors. In conclusion, our findings suggest that silibinin could potentially function as a multitargeting antimetastatic agent and might provide new insights for HCC therapy particularly for HBV-related and/or P53-mutated HCCs.
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Affiliation(s)
- Reza Ghasemi
- Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
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12
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Suppression of apoptosis by pseudorabies virus Us3 protein kinase through the activation of PI3-K/Akt and NF-κB pathways. Res Vet Sci 2013; 95:764-74. [PMID: 23835241 DOI: 10.1016/j.rvsc.2013.06.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 05/29/2013] [Accepted: 06/02/2013] [Indexed: 12/22/2022]
Abstract
The pseudorabies virus (PRV) is a major viral disease that causes huge economic loss in the pig industry globally. Most viruses have been found to generate anti-apoptotic factors that facilitate cell survival in the early stages of infection. This study aimed to investigate the anti-apoptotic effects of PRV and study the underlying mechanisms in the early stage of infection. We investigated and compared whether the two PRV Us3 isoforms, Us3a and Us3b, could block apoptosis induced by virus infection, and further identified molecules involved in the signaling pathways. Our results demonstrated that PRV elicits 3-phosphoinositide dependent protein kinase-1/phosphatidylinositide 3-kinases/Akt (PDK-1/PI3-K/Akt)- and nuclear factor-κB (NF-κB)-dependent signaling in the early stage of infection. Inhibition of the PI3-K/Akt or NF-κB pathway enhanced cell death but no effect was observed on virus replication or PRV gene expression. Transiently-expressed GFP- or His-tagged PRV Us3a and Us3b cDNA protect cells against PRV-, avian reovirus- or bovine ephemeral fever virus-induced apoptosis in the cell lines. Us3a and Us3b transient over-expression upregulated several anti-apopototic signaling events, and the anti-apoptosis activity of Us3a is greater than that of Us3b. Kinase activity-deficient point or double point mutated Us3a lost the kinase activity of Us3a, which showed that kinase activity is required for the anti-apoptosis effect of Us3. Akt and NF-κB activation still occurred in UV-inactivated PRV- and cycloheximide-treated cells. In vivo study showed that PRV-infected trigeminal ganglion increases the expression of anti-apoptosis signaling molecules, including Akt, PDK-1 and IκBα, which is a similar result to that seen in the in vitro experiments. Our study suggests that signaling mechanisms may play important roles in PRV pathogenesis.
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13
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Ahlqvist K, Saamarthy K, Syed Khaja AS, Bjartell A, Massoumi R. Expression of Id proteins is regulated by the Bcl-3 proto-oncogene in prostate cancer. Oncogene 2012; 32:1601-8. [PMID: 22580608 DOI: 10.1038/onc.2012.175] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
B-cell leukemia 3 (Bcl-3) is a member of the inhibitor of κB family, which regulates a wide range of biological processes by functioning as a transcriptional activator or as a repressor of target genes. As high levels of Bcl-3 expression and activation have been detected in different types of human cancer, Bcl-3 has been labeled a proto-oncogene. Our study uncovered a markedly upregulated Bcl-3 expression in human prostate cancer (PCa), where inflammatory cell infiltration was observed. Elevated Bcl-3 expression in PCa was dependent on the proinflammatory cytokine interleukin-6-mediated STAT3 activation. Microarray analyses, using Bcl-3 knockdown in PCa cells, identified the inhibitor of DNA-binding (Id) family of helix-loop-helix proteins as potential Bcl-3-regulated genes. Bcl-3 knockdown reduced the abundance of Id-1 and Id-2 proteins and boosted PCa cells to be more receptive to undergoing apoptosis following treatment with anticancer drug. Our data imply that inactivation of Bcl-3 may lead to sensitization of cancer cells to chemotherapeutic drug-induced apoptosis, thus suggesting a potential therapeutic strategy in PCa treatment.
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Affiliation(s)
- K Ahlqvist
- Center for Molecular Tumor Pathology, Department of Laboratory Medicine, Lund University, Skåne University Hospital, Malmö, Sweden
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Ku regulates signaling to DNA damage response pathways through the Ku70 von Willebrand A domain. Mol Cell Biol 2011; 32:76-87. [PMID: 22037767 DOI: 10.1128/mcb.05661-11] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The Ku heterodimer (Ku70/Ku80) is a main component of the nonhomologous end-joining (NHEJ) pathway that repairs DNA double-strand breaks (DSBs). Ku binds the broken DNA end and recruits other proteins to facilitate the processing and ligation of the broken end. While Ku interacts with many proteins involved in DNA damage/repair-related functions, few interactions have been mapped to the N-terminal von Willebrand A (vWA) domain, a predicted protein interaction domain. The mutagenesis of Ku70 vWA domain S155/D156 unexpectedly increased cell survival following ionizing radiation (IR) treatment. DNA repair appeared unaffected, but defects in the activation of apoptosis and alterations in the DNA damage signaling response were identified. In particular, Ku70 S155A/D156A affected the IR-induced transcriptional response of several activating transcription factor 2 (ATF2)-regulated genes involved in apoptosis regulation. ATF2 phosphorylation and recruitment to DNA damage-induced foci was increased in Ku70-deficient cells, suggesting that Ku represses ATF2 activation. Ku70 S155A/D156A substitutions further enhanced this repression. S155A substitution alone was sufficient to confer enhanced survival, whereas alteration to a phosphomimetic residue (S155D) reversed this effect, suggesting that S155 is a phosphorylation site. Thus, these findings infer that Ku links signals from the DNA repair machinery to DNA damage signaling regulators that control apoptotic pathways.
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Shin DH, Jang SH, Kang BC, Kim HJ, Oh SH, Kong G. Constitutive overexpression of Id-1 in mammary glands of transgenic mice results in precocious and increased formation of terminal end buds, enhanced alveologenesis, delayed involution. J Cell Physiol 2011; 226:1340-52. [DOI: 10.1002/jcp.22462] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Mern DS, Hasskarl J, Burwinkel B. Inhibition of Id proteins by a peptide aptamer induces cell-cycle arrest and apoptosis in ovarian cancer cells. Br J Cancer 2010; 103:1237-44. [PMID: 20842131 PMCID: PMC2967066 DOI: 10.1038/sj.bjc.6605897] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background: Inhibitors of DNA-binding proteins (Id1-4), lacking the basic DNA-binding domain, function as dominant inhibitors of cell-cycle regulators. Overexpression of Id proteins promotes cancer cell proliferation and resistance against apoptosis. Level of Id protein expression, especially of Id1, correlates with poor differentiation, enhanced malignant potential and more aggressive clinical behaviour of ovarian tumours. Although overexpression of Ids has been found and shown to correlate with poor clinical outcome, their inhibition at protein level has never been studied. Methods: A peptide aptamer, Id1/3-PA7, targeting Id1 and Id3, was isolated from a randomised combinatorial expression library using yeast and mammalian two-hybrid systems. Id1/3-PA7 was fused, expressed and purified with a cell-penetrating protein transduction domain. Results: Intracellular-delivered Id1/3-PA7 colocalised to Id1 and Id3. It induced cell-cycle arrest and apoptosis in ovarian cancer cells ES-2 and PA-1. It activated the E-box promoter and increased the expression level of cyclin-dependent kinase inhibitor (CDKN2A) in a dose-dependent manner that is paralleled by the cleavage of poly-ADP ribose polymerase. These effects were counteracted by ectopically overexpressed Id1 and Id3. Conclusion: Id1/3-PA7 could represent an exogenous anti-tumour agent that can significantly trigger cell-cycle arrest and apoptosis in ovarian cancer.
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Affiliation(s)
- D S Mern
- Helmholtz-University Group Molecular Epidemiology, German Cancer Research Center, Im Neuenheimer Feld 581, D-69120 Heidelberg, Germany.
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Aclarubicin-induced apoptosis and necrosis in cells derived from human solid tumours. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2010; 700:1-10. [DOI: 10.1016/j.mrgentox.2010.04.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2009] [Revised: 11/24/2009] [Accepted: 03/29/2010] [Indexed: 11/15/2022]
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Mern DS, Hoppe-Seyler K, Hoppe-Seyler F, Hasskarl J, Burwinkel B. Targeting Id1 and Id3 by a specific peptide aptamer induces E-box promoter activity, cell cycle arrest, and apoptosis in breast cancer cells. Breast Cancer Res Treat 2010; 124:623-33. [PMID: 20191379 DOI: 10.1007/s10549-010-0810-6] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Accepted: 02/13/2010] [Indexed: 11/25/2022]
Abstract
Inhibitors of differentiation or DNA binding (Id) proteins have been shown to be involved in tumor growth, invasiveness, metastasis, and angiogenesis. Overexpression of Id proteins, especially Id1, correlates with unfavorable clinical prognosis. Thus, they are attractive molecular targets for anticancer therapy. Overexpression of Id proteins mediates breast cancer metastasis to lung. Targeting Id1 and Id3 expression in breast cancer cells reduces breast cancer metastasis in animal models. Different breast tumors failed to grow and/or metastasize in Id1 (+/-) Id3 (-/-) mice. Id1 and Id3 preferentially dimerize with the key regulatory E-proteins which inhibit the expression of different tumor suppressor genes. Nevertheless, the inhibition of tumorigenic activities of Id1 and Id3 at protein level has never been studied. Here, we isolated a novel peptide aptamer, Id1/3-PA7, specifically interacting with Id1 and Id3 from randomized combinatorial expression library using yeast and mammalian two-hybrid systems. Intracellular delivered Id1/3-PA7 co-localized to Id1 and Id3 and interfered with their functions. It repressed E47 protein sequestration by Id1 and Id3, activated the E-box promoter and increased the expression level of cyclin-dependent kinase inhibitors (CDKN1A and CDKN1B) in a dose-dependent fashion, paralleled by the cleavage of poly ADP ribose polymerase (PARP). These effects were counteracted by ectopically overexpressed Id1 and Id3. Peptide aptamer Id1/3-PA7 induced cell cycle arrest and apoptosis in breast cancer cells MCF7 and MDA-MB-231. In conclusion, Id1/3-PA7 could represent a nontoxic exogenous agent that can significantly provoke antiproliferative and apoptotic effects in breast cancer cells, which are associated with deregulated expression of Id1 and Id3.
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Affiliation(s)
- Demissew S Mern
- Helmholtz-University Group Molecular Epidemiology, German Cancer Research Center, Im Neuenheimer Feld 581, 69120, Heidelberg, Germany.
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Prostate cancer cells modulate osteoblast mineralisation and osteoclast differentiation through Id-1. Br J Cancer 2009; 102:332-41. [PMID: 20010941 PMCID: PMC2816654 DOI: 10.1038/sj.bjc.6605480] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Background: Id-1 is overexpressed in and correlated with metastatic potential of prostate cancer. The role of Id-1 in this metastatic process was further analysed. Methods: Conditioned media from prostate cancer cells, expressing various levels of Id-1, were used to stimulate pre-osteoclast differentiation and osteoblast mineralisation. Downstream effectors of Id-1 were identified. Expressions of Id-1 and its downstream effectors in prostate cancers were studied using immunohistochemistry in a prostate cancer patient cohort (N=110). Results: We found that conditioned media from LNCaP prostate cancer cells overexpressing Id-1 had a higher ability to drive osteoclast differentiation and a lower ability to stimulate osteoblast mineralisation than control, whereas conditioned media from PC3 prostate cancer cells with Id-1 knockdown were less able to stimulate osteoclast differentiation. Id-1 was found to negatively regulate TNF-β and this correlation was confirmed in human prostate cancer specimens (P=0.03). Furthermore, addition of recombinant TNF-β to LNCaP Id-1 cell-derived media blocked the effect of Id-1 overexpression on osteoblast mineralisation. Conclusion: In prostate cancer cells, the ability of Id-1 to modulate bone cell differentiation favouring metastatic bone disease is partially mediated by TNF-β, and Id-1 could be a potential therapeutic target for prostate cancer to bone metastasis.
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20
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High Id1 expression is associated with poor prognosis in 237 patients with acute myeloid leukemia. Blood 2009; 114:2993-3000. [PMID: 19643984 DOI: 10.1182/blood-2009-05-223115] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Inhibitors of differentiation (Id) are a group of dominant inhibitors of basic helix-loop-helix transcriptional factors, which promote excessive proliferation, and also protect cells against drug-induced apoptosis in mammalians. Recently, Id1 has been identified as a common downstream target of several constitutively activated oncogenic tyrosine kinase, such as FLT3 internal tandem duplication, in leukemia cells. We analyzed Id1 expression as possible prognostic factor in 237 acute myeloid leukemia (AML) patients. High Id1 expression was associated with older age (P = .009) and with FLT3 internal tandem duplication (P = .003). However, 61% of the patients in the group of FLT3(-) AML were Id1(+), suggesting that other tyrosine kinases are involved. In whole population, high Id1 expression independently predicted shorter disease-free survival (P = .05) and overall survival (P = .003). In young patients (age <OR= 60 years) with normal cytogenetics, Id1(+) was, in multivariate analysis, associated with lower complete remission rates (P = .02), shorter disease-free survival (P = .02), and overall survival (P = .006). In conclusion, our data provide a new molecular marker for refining the risk classification of AML, especially in young patients with normal cytogenetic. Id1(-) patients with normal cytogenetic should be classified as favorable-risk leukemia. Id1, as a downstream target of constitutively activated tyrosine kinase, could be a suitable candidate for targeted therapy.
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Gray MJ, Dallas NA, Van Buren G, Xia L, Yang AD, Somcio RJ, Gaur P, Mangala LS, Vivas-Mejia PE, Fan F, Sanguino AM, Gallick GE, Lopez-Berestein G, Sood AK, Ellis LM. Therapeutic targeting of Id2 reduces growth of human colorectal carcinoma in the murine liver. Oncogene 2008; 27:7192-200. [PMID: 18806828 PMCID: PMC3199128 DOI: 10.1038/onc.2008.356] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2008] [Revised: 08/01/2008] [Accepted: 08/05/2008] [Indexed: 11/08/2022]
Abstract
During development inhibitor of DNA-bind-2 (Id2) regulates proliferation and differentiation. Id2 expression has been detected in cancer cells, yet its cellular function and validity as a therapeutic target remains largely unknown. Immunohistochemical analysis of colorectal cancer (CRC) specimens revealed that Id2 was undetectable in normal colonic mucosa, but occurs in 40% of primary tumors and in most CRC liver metastases (P<0.0001). Additionally, Id2 was expressed in all CRC cell lines assayed. CRC cells with reduced Id2 expression demonstrated reduced proliferation. Analysis of CRC cell cycle regulatory proteins showed that reducing Id2 levels reduces cyclin D1 levels and increased p21 levels. Reduction of Id2 expression also enhanced tumor cell apoptosis, increasing levels of the pro-apoptotic protein Bim/Bod, and cleavage of caspase-7 and poly (ADP-ribose) polymerase. In vivo studies show tumors derived from cells with decreased Id2 levels formed smaller tumors with fewer metastases compared with tumors with normal levels (P<0.05). Furthermore, intraperitoneal administration of Id2 small interfering RNA (siRNA) conjugated with the neutral liposome 1,2-dioleoyl-sn-glycero-3-phosphatidylcholine decreased tumor burden in mice compared with control treatment (P=0.006). We conclude that Id2 is upregulated in CRC, and is important in promoting cell survival. In vivo targeting of Id2 by siRNA establishes that it is a valid therapeutic target where its expression occurs.
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Affiliation(s)
- MJ Gray
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - NA Dallas
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - G Van Buren
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - L Xia
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - AD Yang
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - RJ Somcio
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - P Gaur
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - LS Mangala
- Department of Gynecologic Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - PE Vivas-Mejia
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - F Fan
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - AM Sanguino
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - GE Gallick
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - G Lopez-Berestein
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - AK Sood
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of Gynecologic Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - LM Ellis
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Wang X, Di K, Zhang X, Han HY, Wong YC, Leung SCL, Ling MT. Id-1 promotes chromosomal instability through modification of APC/C activity during mitosis in response to microtubule disruption. Oncogene 2008; 27:4456-66. [PMID: 18372912 DOI: 10.1038/onc.2008.87] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Id-1 (Inhibitor of DNA binding/differential-1) plays a positive role in tumorigenesis through regulation of multiple signaling pathways. Recently, it is suggested that upregulation of Id-1 in cancer cells promotes chromosomal instability. However, the underlying molecular mechanism is not known. In this study, we report a novel function of Id-1 in regulation of mitosis through physical interaction with Cdc20 (cell division cycle protein 20) and Cdh1 (Cdc20 homolog 1). During early mitosis, Id-1 interacts with Cdc20 and RASSF1A (Ras association domain family 1A), leading to enhanced APC(Cdc20) activity, which in turn promotes cyclin B1/securin degradation and premature mitosis. During late mitosis, Id-1 binds to Cdh1 and disrupts the interaction between Cdh1 and APC, resulting in suppression of APC(Cdh1) activity. On the other hand, overexpression of Cdh1 leads to Id-1 protein degradation, suggesting that Id-1 may also act as a substrate of APC(Cdh1). The negative effect of Id-1 on APC(Cdh1) results in suppression of APC(Cdh1)-induced Aurora A and Cdc20 degradation, leading to failure in cytokinesis. As a result, overexpression of Id-1 in human prostate epithelial cells leads to polyploidy in response to microtubule disruption, and this effect is abolished when Id-1 expression is suppressed using antisense technology. These results demonstrate a novel function of Id-1 in promoting chromosomal instability through modification of APC/C activity during mitosis and provide a novel molecular mechanism accounted for the function of Id-1 as an oncogene.
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Affiliation(s)
- X Wang
- Cancer Biology Group, Department of Anatomy, Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
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Kim H, Chung H, Kim HJ, Lee JY, Oh MY, Kim Y, Kong G. Id-1 regulates Bcl-2 and Bax expression through p53 and NF-κB in MCF-7 breast cancer cells. Breast Cancer Res Treat 2007; 112:287-96. [DOI: 10.1007/s10549-007-9871-6] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2007] [Accepted: 12/14/2007] [Indexed: 10/22/2022]
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Zhang X, Ling MT, Wang Q, Lau CK, Leung SCL, Lee TK, Cheung ALM, Wong YC, Wang X. Identification of a Novel Inhibitor of Differentiation-1 (ID-1) Binding Partner, Caveolin-1, and Its Role in Epithelial-Mesenchymal Transition and Resistance to Apoptosis in Prostate Cancer Cells. J Biol Chem 2007; 282:33284-33294. [PMID: 17855368 DOI: 10.1074/jbc.m705089200] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Recently, ID-1 (inhibitor of differentiation/DNA binding) is suggested as an oncogene and is reported to promote cell proliferation, invasion, and survival in several types of human cancer cells through multiple signaling pathways. However, how Id-1 interacts with these pathways and the immediate downstream effectors of the Id-1 protein are not known. In this study, using a yeast two-hybrid screening technique, we identified a novel Id-1-interacting protein, caveolin-1 (Cav-1), a cell membrane protein, and a positive regulator of cell survival and metastasis in prostate cancer. Using an immunoprecipitation method, we found that the helix-loop-helix domain of the Id-1 protein was essential for the physical interaction between Id-1 and Cav-1. In addition, we also demonstrated that the physical interaction between Id-1 and Cav-1 played a key role in the epithelial-mesenchymal transition and increased cell migration rate as well as resistance to taxol-induced apoptosis in prostate cancer cells. Furthermore, our results revealed that this effect was regulated by Id-1-induced Akt activation through promoting the binding activity between Cav-1 and protein phosphatase 2A. Our study demonstrates a novel Id-1 binding partner and suggests a molecular mechanism that mediates the function of Id-1 in promoting prostate cancer progression through activation of the Akt pathway leading to cancer cell invasion and resistance to anticancer drug-induced apoptosis.
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Affiliation(s)
- Xiaomeng Zhang
- Department of Anatomy, University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China
| | - Ming-Tat Ling
- Department of Anatomy, University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China
| | - Qi Wang
- Department of Anatomy, University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China
| | - Chi-Keung Lau
- Surgery, Faculty of Medicine, Pokfulam, University of Hong Kong, Hong Kong, Special Administrative Region, China
| | - Steve C L Leung
- Department of Anatomy, University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China
| | - Terence K Lee
- Surgery, Faculty of Medicine, Pokfulam, University of Hong Kong, Hong Kong, Special Administrative Region, China
| | - Annie L M Cheung
- Department of Anatomy, University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China
| | - Yong-Chuan Wong
- Department of Anatomy, University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China.
| | - Xianghong Wang
- Department of Anatomy, University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China.
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