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Fan YJ, Pan FZ, Cui ZG, Zheng HC. The Antitumor and Sorafenib-resistant Reversal Effects of Ursolic Acid on Hepatocellular Carcinoma via Targeting ING5. Int J Biol Sci 2024; 20:4190-4208. [PMID: 39247819 PMCID: PMC11379078 DOI: 10.7150/ijbs.97720] [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: 04/24/2024] [Accepted: 07/15/2024] [Indexed: 09/10/2024] Open
Abstract
Inhibitor of growth 5 (ING5) has been reported to be involved in the malignant progression of cancers. Ursolic acid (UA) has shown remarkable antitumor effects. However, its antitumor mechanisms regarding of ING5 in hepatocellular carcinoma (HCC) remain unclear. Herein, we found that UA significantly suppressed the proliferation, anti-apoptosis, migration and invasion of HCC cells. In addition, ING5 expression in HCC cells treated with UA was obviously downregulated in a concentration- and time-dependent manner. Additionally, the pro-oncogenic role of ING5 was confirmed in HCC cells. Further investigation revealed that UA exerted antitumor effects on HCC by inhibiting ING5-mediated activation of PI3K/Akt pathway. Notably, UA could also reverse sorafenib resistance of HCC cells by suppressing the ING5-ACC1/ACLY-lipid droplets (LDs) axis. UA abrogated ING5 transcription and downregulated its expression by reducing SRF and YY1 expression and the SRF-YY1 complex formation. Alb/JCPyV T antigen mice were used for in vivo experiments since T antigen upregulated ING5 expression by inhibiting the ubiquitin-mediated degradation and promoting the T antigen-SRF-YY1-ING5 complex-associated transcription. UA suppressed JCPyV T antigen-induced spontaneous HCC through inhibiting ING5-mediated PI3K/Akt signaling pathway. These findings suggest that UA has the dual antitumoral functions of inhibiting hepatocellular carcinogenesis and reversing sorafenib resistance of HCC cells through targeting ING5, which could serve as a potential therapeutic strategy for HCC.
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Affiliation(s)
- Yin-Jie Fan
- College of Integrated Chinese and Western Medicine, Liaoning University of Traditional Chinese Medicine, Shenyang 110001, Liaoning Province, China
| | - Fu-Zhi Pan
- Department of Ultrasound Medicine, Liaoning Cancer Hospital, Shenyang 110001, Liaoning Province, China
| | - Zheng-Guo Cui
- Department of Environmental Health, University of Fukui School of Medical Sciences, Fukui 910-1193, Japan
| | - Hua-Chuan Zheng
- Cancer Center, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121001, Liaoning Province, China
- Department of Oncology and Central Laboratory, The Affiliated Hospital of Chengde Medical University, Chengde 067000, Hebei Province, China
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2
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Lashen A, Alqahtani S, Shoqafi A, Algethami M, Jeyapalan JN, Mongan NP, Rakha EA, Madhusudan S. Clinicopathological Significance of Cyclin-Dependent Kinase 2 (CDK2) in Ductal Carcinoma In Situ and Early-Stage Invasive Breast Cancers. Int J Mol Sci 2024; 25:5053. [PMID: 38732271 PMCID: PMC11084890 DOI: 10.3390/ijms25095053] [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: 02/26/2024] [Revised: 04/25/2024] [Accepted: 05/03/2024] [Indexed: 05/13/2024] Open
Abstract
Cyclin-dependent kinase 2 (CDK2) is a key cell cycle regulator, with essential roles during G1/S transition. The clinicopathological significance of CDK2 in ductal carcinomas in situ (DCIS) and early-stage invasive breast cancers (BCs) remains largely unknown. Here, we evaluated CDK2's protein expression in 479 BC samples and 216 DCIS specimens. Analysis of CDK2 transcripts was completed in the METABRIC cohort (n = 1980) and TCGA cohort (n = 1090), respectively. A high nuclear CDK2 protein expression was significantly associated with aggressive phenotypes, including a high tumour grade, lymph vascular invasion, a poor Nottingham prognostic index (all p-values < 0.0001), and shorter survival (p = 0.006), especially in luminal BC (p = 0.009). In p53-mutant BC, high nuclear CDK2 remained linked with worse survival (p = 0.01). In DCIS, high nuclear/low cytoplasmic co-expression showed significant association with a high tumour grade (p = 0.043), triple-negative and HER2-enriched molecular subtypes (p = 0.01), Comedo necrosis (p = 0.024), negative ER status (p = 0.004), negative PR status (p < 0.0001), and a high proliferation index (p < 0.0001). Tumours with high CDK2 transcripts were more likely to have higher expressions of genes involved in the cell cycle, homologous recombination, and p53 signaling. We provide compelling evidence that high CDK2 is a feature of aggressive breast cancers. The clinical evaluation of CDK2 inhibitors in early-stage BC patients will have a clinical impact.
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MESH Headings
- Humans
- Female
- Cyclin-Dependent Kinase 2/metabolism
- Cyclin-Dependent Kinase 2/genetics
- Breast Neoplasms/pathology
- Breast Neoplasms/genetics
- Breast Neoplasms/metabolism
- Breast Neoplasms/mortality
- Carcinoma, Intraductal, Noninfiltrating/pathology
- Carcinoma, Intraductal, Noninfiltrating/genetics
- Carcinoma, Intraductal, Noninfiltrating/metabolism
- Prognosis
- Middle Aged
- Biomarkers, Tumor/metabolism
- Biomarkers, Tumor/genetics
- Neoplasm Staging
- Carcinoma, Ductal, Breast/pathology
- Carcinoma, Ductal, Breast/metabolism
- Carcinoma, Ductal, Breast/genetics
- Carcinoma, Ductal, Breast/mortality
- Aged
- Gene Expression Regulation, Neoplastic
- Neoplasm Invasiveness
- Tumor Suppressor Protein p53/metabolism
- Tumor Suppressor Protein p53/genetics
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Affiliation(s)
- Ayat Lashen
- Nottingham Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham NG7 3RD, UK; (A.L.); (S.A.); (A.S.); (M.A.); (J.N.J.); (N.P.M.); (E.A.R.)
- Department of Pathology, Nottingham University Hospital, City Campus, Nottingham NG5 1PB, UK
| | - Shatha Alqahtani
- Nottingham Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham NG7 3RD, UK; (A.L.); (S.A.); (A.S.); (M.A.); (J.N.J.); (N.P.M.); (E.A.R.)
| | - Ahmed Shoqafi
- Nottingham Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham NG7 3RD, UK; (A.L.); (S.A.); (A.S.); (M.A.); (J.N.J.); (N.P.M.); (E.A.R.)
| | - Mashael Algethami
- Nottingham Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham NG7 3RD, UK; (A.L.); (S.A.); (A.S.); (M.A.); (J.N.J.); (N.P.M.); (E.A.R.)
| | - Jennie N. Jeyapalan
- Nottingham Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham NG7 3RD, UK; (A.L.); (S.A.); (A.S.); (M.A.); (J.N.J.); (N.P.M.); (E.A.R.)
- Faculty of Medicine and Health Sciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington LE12 5RD, UK
| | - Nigel P. Mongan
- Nottingham Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham NG7 3RD, UK; (A.L.); (S.A.); (A.S.); (M.A.); (J.N.J.); (N.P.M.); (E.A.R.)
- Faculty of Medicine and Health Sciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington LE12 5RD, UK
- Department of Pharmacology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Emad A. Rakha
- Nottingham Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham NG7 3RD, UK; (A.L.); (S.A.); (A.S.); (M.A.); (J.N.J.); (N.P.M.); (E.A.R.)
- Department of Pathology, Nottingham University Hospital, City Campus, Nottingham NG5 1PB, UK
| | - Srinivasan Madhusudan
- Nottingham Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham NG7 3RD, UK; (A.L.); (S.A.); (A.S.); (M.A.); (J.N.J.); (N.P.M.); (E.A.R.)
- Department of Oncology, Nottingham University Hospitals, Nottingham NG5 1PB, UK
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3
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Al-Hawary SIS, Ruzibakieva M, Gupta R, Malviya J, Toama MA, Hjazi A, Alkhayyat MRR, Alsaab HO, Hadi A, Alwaily ER. Detailed role of microRNA-mediated regulation of PI3K/AKT axis in human tumors. Cell Biochem Funct 2024; 42:e3904. [PMID: 38102946 DOI: 10.1002/cbf.3904] [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: 10/24/2023] [Revised: 11/23/2023] [Accepted: 12/01/2023] [Indexed: 12/17/2023]
Abstract
The regulation of signal transmission and biological processes, such as cell proliferation, apoptosis, metabolism, migration, and angiogenesis are greatly influenced by the PI3K/AKT signaling pathway. Highly conserved endogenous non-protein-coding RNAs known as microRNAs (miRNAs) have the ability to regulate gene expression by inhibiting mRNA translation or mRNA degradation. MiRNAs serve key role in PI3K/AKT pathway as upstream or downstream target, and aberrant activation of this pathway contributes to the development of cancers. A growing body of research shows that miRNAs can control the PI3K/AKT pathway to control the biological processes within cells. The expression of genes linked to cancers can be controlled by the miRNA/PI3K/AKT axis, which in turn controls the development of cancer. There is also a strong correlation between the expression of miRNAs linked to the PI3K/AKT pathway and numerous clinical traits. Moreover, PI3K/AKT pathway-associated miRNAs are potential biomarkers for cancer diagnosis, therapy, and prognostic evaluation. The role and clinical applications of the PI3K/AKT pathway and miRNA/PI3K/AKT axis in the emergence of cancers are reviewed in this article.
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Affiliation(s)
| | - Malika Ruzibakieva
- Cell Therapy Department, Institute of Immunology and Human Genomics, Uzbekistan Academy of Science, Tashkent, Uzbekistan
| | - Reena Gupta
- Institute of Pharmaceutical Research, GLA University, Mathura, Uttar Pradesh, India
| | - Jitendra Malviya
- Department of Life Sciences and Biological Sciences, IES University, Bhopal, Madhya Pradesh, India
| | - Mariam Alaa Toama
- College of Pharmacy, National University of Science and Technology, Dhi Qar, Iraq
| | - Ahmed Hjazi
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Murtadha Raad Radhi Alkhayyat
- Department of Islamic Studies, College of Art, The Islamic University of Najaf, Najaf, Iraq
- Department of Islamic Studies, College of Art, The Islamic University of Babylon, Babylon, Iraq
- Department of Islamic Studies, College of Art, The Islamic University of Al Diwaniyah, Diwaniyah, Iraq
| | - Hashem O Alsaab
- Department of Pharmaceutics and Pharmaceutical Technology, Taif University, Taif, Saudi Arabia
| | - Ali Hadi
- Department of Medical Laboratories Techniques, Imam Ja'afar Al-Sadiq University, Al-Muthanna, Iraq
| | - Enas R Alwaily
- Microbiology Research Group, Al-Ayen University, Thi-Qar, Iraq
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4
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Savage SR, Zhang Y, Jaehnig EJ, Liao Y, Shi Z, Pham HA, Xu H, Zhang B. IDPpub: Illuminating the Dark Phosphoproteome Through PubMed Mining. Mol Cell Proteomics 2024; 23:100682. [PMID: 37993103 PMCID: PMC10716774 DOI: 10.1016/j.mcpro.2023.100682] [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: 05/17/2023] [Revised: 10/25/2023] [Accepted: 11/14/2023] [Indexed: 11/24/2023] Open
Abstract
Global phosphoproteomics experiments quantify tens of thousands of phosphorylation sites. However, data interpretation is hampered by our limited knowledge on functions, biological contexts, or precipitating enzymes of the phosphosites. This study establishes a repository of phosphosites with associated evidence in biomedical abstracts, using deep learning-based natural language processing techniques. Our model for illuminating the dark phosphoproteome through PubMed mining (IDPpub) was generated by fine-tuning BioBERT, a deep learning tool for biomedical text mining. Trained using sentences containing protein substrates and phosphorylation site positions from 3000 abstracts, the IDPpub model was then used to extract phosphorylation sites from all MEDLINE abstracts. The extracted proteins were normalized to gene symbols using the National Center for Biotechnology Information gene query, and sites were mapped to human UniProt sequences using ProtMapper and mouse UniProt sequences by direct match. Precision and recall were calculated using 150 curated abstracts, and utility was assessed by analyzing the CPTAC (Clinical Proteomics Tumor Analysis Consortium) pan-cancer phosphoproteomics datasets and the PhosphoSitePlus database. Using 10-fold cross validation, pairs of correct substrates and phosphosite positions were extracted with an average precision of 0.93 and recall of 0.94. After entity normalization and site mapping to human reference sequences, an independent validation achieved a precision of 0.91 and recall of 0.77. The IDPpub repository contains 18,458 unique human phosphorylation sites with evidence sentences from 58,227 abstracts and 5918 mouse sites in 14,610 abstracts. This included evidence sentences for 1803 sites identified in CPTAC studies that are not covered by manually curated functional information in PhosphoSitePlus. Evaluation results demonstrate the potential of IDPpub as an effective biomedical text mining tool for collecting phosphosites. Moreover, the repository (http://idppub.ptmax.org), which can be automatically updated, can serve as a powerful complement to existing resources.
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Affiliation(s)
- Sara R Savage
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas, USA; Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | | | - Eric J Jaehnig
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas, USA; Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Yuxing Liao
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas, USA; Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Zhiao Shi
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas, USA; Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | | | - Hua Xu
- Section of Biomedical Informatics and Data Science, School of Medicine, Yale University, Connecticut, USA
| | - Bing Zhang
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas, USA; Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA.
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5
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Kim LH, Kim JY, Xu YY, Lim MA, Koo BS, Kim JH, Yoon SE, Kim YJ, Choi KW, Chang JW, Hong ST. Tctp, a unique Ing5-binding partner, inhibits the chromatin binding of Enok in Drosophila. Proc Natl Acad Sci U S A 2023; 120:e2218361120. [PMID: 37014852 PMCID: PMC10104566 DOI: 10.1073/pnas.2218361120] [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: 10/29/2022] [Accepted: 02/26/2023] [Indexed: 04/05/2023] Open
Abstract
The MOZ/MORF histone acetyltransferase complex is highly conserved in eukaryotes and controls transcription, development, and tumorigenesis. However, little is known about how its chromatin localization is regulated. Inhibitor of growth 5 (ING5) tumor suppressor is a subunit of the MOZ/MORF complex. Nevertheless, the in vivo function of ING5 remains unclear. Here, we report an antagonistic interaction between Drosophila Translationally controlled tumor protein (TCTP) (Tctp) and ING5 (Ing5) required for chromatin localization of the MOZ/MORF (Enok) complex and H3K23 acetylation. Yeast two-hybrid screening using Tctp identified Ing5 as a unique binding partner. In vivo, Ing5 controlled differentiation and down-regulated epidermal growth factor receptor signaling, whereas it is required in the Yorkie (Yki) pathway to determine organ size. Ing5 and Enok mutants promoted tumor-like tissue overgrowth when combined with uncontrolled Yki activity. Tctp depletion rescued the abnormal phenotypes of the Ing5 mutation and increased the nuclear translocation of Ing5 and chromatin binding of Enok. Nonfunctional Enok promoted the nuclear translocation of Ing5 by reducing Tctp, indicating a feedback mechanism between Tctp, Ing5, and Enok to regulate histone acetylation. Therefore, Tctp is essential for H3K23 acetylation by controlling the nuclear translocation of Ing5 and chromatin localization of Enok, providing insights into the roles of human TCTP and ING5-MOZ/MORF in tumorigenesis.
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Affiliation(s)
- Lee-Hyang Kim
- Department of Anatomy and Cell Biology, College of Medicine, Chungnam National University, Daejeon35015, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon35015, Republic of Korea
| | - Ja-Young Kim
- Department of Anatomy and Cell Biology, College of Medicine, Chungnam National University, Daejeon35015, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon35015, Republic of Korea
| | - Yu-Ying Xu
- Department of Anatomy and Cell Biology, College of Medicine, Chungnam National University, Daejeon35015, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon35015, Republic of Korea
| | - Mi Ae Lim
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Chungnam National University, Daejeon35015, Republic of Korea
| | - Bon Seok Koo
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Chungnam National University, Daejeon35015, Republic of Korea
| | - Jung Hae Kim
- Department of Anatomy and Cell Biology, College of Medicine, Chungnam National University, Daejeon35015, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon35015, Republic of Korea
| | - Sung-Eun Yoon
- Korea Drosophila Resource Center, Gwangju Institute of Science and Technology, Gwangju61005, Republic of Korea
| | - Young-Joon Kim
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju61005, Republic of Korea
| | - Kwang-Wook Choi
- Department of Biological Sciences, Korea Advanced Institute of Science & Technology, Daejeon34141, Republic of Korea
| | - Jae Won Chang
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Chungnam National University, Daejeon35015, Republic of Korea
| | - Sung-Tae Hong
- Department of Anatomy and Cell Biology, College of Medicine, Chungnam National University, Daejeon35015, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon35015, Republic of Korea
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6
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Azemin WA, Alias N, Ali AM, Shamsir MS. In silico analysis prediction of HepTH1-5 as a potential therapeutic agent by targeting tumour suppressor protein networks. J Biomol Struct Dyn 2023; 41:1141-1167. [PMID: 34935583 DOI: 10.1080/07391102.2021.2017349] [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: 01/18/2023]
Abstract
Many studies reported that the activation of tumour suppressor protein, p53 induced the human hepcidin expression. However, its expression decreased when p53 was silenced in human hepatoma cells. Contrary to Tilapia hepcidin TH1-5, HepTH1-5 was previously reported to trigger the p53 activation through the molecular docking approach. The INhibitor of Growth (ING) family members are also shown to directly interact with p53 and promote cell cycle arrest, senescence, apoptosis and participate in DNA replication and DNA damage responses to suppress the tumour initiation and progression. However, the interrelation between INGs and HepTH1-5 remains unknown. Therefore, this study aims to identify the mechanism and their protein interactions using in silico approaches. The finding revealed that HepTH1-5 and its ligands had interacted mostly on hotspot residues of ING proteins which involved in histone modifications via acetylation, phosphorylation, and methylation. This proves that HepTH1-5 might implicate in an apoptosis signalling pathway and preserve the protein structure and function of INGs by reducing the perturbation of histone binding upon oxidative stress response. This study would provide theoretical guidance for the design and experimental studies to decipher the role of HepTH1-5 as a potential therapeutic agent for cancer therapy. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Wan-Atirah Azemin
- Faculty of Bioresources and Food Industry, School of Agriculture Science and Biotechnology, Universiti Sultan Zainal Abidin, Besut, Malaysia.,Faculty of Science, Bioinformatics Research Group (BIRG), Department of Biosciences, Universiti Teknologi Malaysia, Skudai, Malaysia
| | - Nadiawati Alias
- Faculty of Bioresources and Food Industry, School of Agriculture Science and Biotechnology, Universiti Sultan Zainal Abidin, Besut, Malaysia
| | - Abdul Manaf Ali
- Faculty of Bioresources and Food Industry, School of Agriculture Science and Biotechnology, Universiti Sultan Zainal Abidin, Besut, Malaysia
| | - Mohd Shahir Shamsir
- Faculty of Science, Bioinformatics Research Group (BIRG), Department of Biosciences, Universiti Teknologi Malaysia, Skudai, Malaysia.,Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Higher Education Hub, Muar, Malaysia
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7
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Zheng HC, Xue H, Jiang HM. The roles of ING5 in cancer: A tumor suppressor. Front Cell Dev Biol 2022; 10:1012179. [PMID: 36425530 PMCID: PMC9679416 DOI: 10.3389/fcell.2022.1012179] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 10/05/2022] [Indexed: 11/09/2022] Open
Abstract
As a Class II tumor suppressor, ING5 contains nuclear localization signal, plant homeodomain, novel conserved region, and leucine zipper-like domains. ING5 proteins form homodimer into a coil-coil structure, and heterodimers with ING4, histone H3K4me3, histone acetyltransferase (HAT) complex, Tip60, Cyclin A1/CDK2, INCA1 and EBNA3C for the transcription of target genes. The acetylated proteins up-regulated by ING5 are preferentially located in nucleus and act as transcription cofactors, chromatin and DNA binding functions, while those down-regulated by ING5 mostly in cytoplasm and contribute to metabolism. ING5 promotes the autoacetylation of HAT p300, p53, histone H3 and H4 for the transcription of downstream genes (Bax, GADD45, p21, p27 and so forth). Transcriptionally, YY1 and SRF up-regulate ING5 mRNA expression by the interaction of YY1-SRF-p53-ING5 complex with ING5 promoter. Translationally, ING5 is targeted by miR-196, miR-196a, miR-196b-5p, miR-193a-3p, miR-27-3p, miR-200b/200a/429, miR-1307, miR-193, miR-222, miR-331-3p, miR-181b, miR-543 and miR-196-b. ING5 suppresses proliferation, migration, invasion and tumor growth of various cancer cells via the suppression of EGFR/PI3K/Akt, IL-6/STAT3, Akt/NF-κB/NF-κB/MMP-9 or IL-6/CXCL12 pathway. ING5-mediated chemoresistance is closely linked to anti-apoptosis, overexpression of chemoresistant genes, the activation of PI3K/Akt/NF-κB and Wnt/β-catenin signal pathways. Histologically, ING5 abrogation in gastric stem-like and pdx1-positive cells causes gastric dysplasia and cancer, and conditional ING5 knockout in pdx1-positive and gastric chief cells increases MNU-induced gastric carcinogenesis. Intestinal ING5 deletion increases AOM/DSS- induced colorectal carcinogenesis and decreases high-fat-diet weight. The overexpression and nucleocytoplasmic translocation of ING5 are seen during carcinogenesis, and ING5 expression was inversely associated with aggressive behaviors and poor prognosis in a variety of cancers. These findings indicated that ING5 might be used for a molecular marker for carcinogenesis and following progression, and as a target for gene therapy if its chemoresistant function might be ameliorated.
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Affiliation(s)
- Hua-chuan Zheng
- Department of Oncology and Central Laboratory, The Affiliated Hospital of Chengde Medical University, Chengde, China
- *Correspondence: Hua-chuan Zheng,
| | - Hang Xue
- Department of Oncology and Central Laboratory, The Affiliated Hospital of Chengde Medical University, Chengde, China
| | - Hua-mao Jiang
- Department of Urology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
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8
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Cenik BK, Sze CC, Ryan CA, Das S, Cao K, Douillet D, Rendleman EJ, Zha D, Khan NH, Bartom E, Shilatifard A. A synthetic lethality screen reveals ING5 as a genetic dependency of catalytically dead Set1A/COMPASS in mouse embryonic stem cells. Proc Natl Acad Sci U S A 2022; 119:e2118385119. [PMID: 35500115 PMCID: PMC9171609 DOI: 10.1073/pnas.2118385119] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 03/21/2022] [Indexed: 11/18/2022] Open
Abstract
Embryonic stem cells (ESCs) are defined by their ability to self-renew and the potential to differentiate into all tissues of the developing organism. We previously demonstrated that deleting the catalytic SET domain of the Set1A/complex of proteins associated with SET1 histone methyltransferase (Set1A/COMPASS) in mouse ESCs does not impair their viability or ability to self-renew; however, it leads to defects in differentiation. The precise mechanisms by which Set1A executes these functions remain to be elucidated. In this study, we demonstrate that mice lacking the SET domain of Set1A are embryonic lethal at a stage that is unique from null alleles. To gain insight into Set1A function in regulating pluripotency, we conducted a CRISPR/Cas9-mediated dropout screen and identified the MOZ/MORF (monocytic leukaemia zinc finger protein/monocytic leukaemia zinc finger protein-related factor) and HBO1 (HAT bound to ORC1) acetyltransferase complex member ING5 as a synthetic perturbation to Set1A. The loss of Ing5 in Set1AΔSET mouse ESCs decreases the fitness of these cells, and the simultaneous loss of ING5 and in Set1AΔSET leads to up-regulation of differentiation-associated genes. Taken together, our results point toward Set1A/COMPASS and ING5 as potential coregulators of the self-renewal and differentiation status of ESCs.
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Affiliation(s)
- Bercin K. Cenik
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Christie C. Sze
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Caila A. Ryan
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Siddhartha Das
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Kaixiang Cao
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Delphine Douillet
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Emily J. Rendleman
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Didi Zha
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Nabiha Haleema Khan
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Elizabeth Bartom
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Robert H. Lurie NCI Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Ali Shilatifard
- Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Robert H. Lurie NCI Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
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9
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Wang Y, Tan J, Li J, Chen H, Wang W. ING5 Inhibits Migration and Invasion of Esophageal Cancer Cells by Downregulating the IL-6/CXCL12 Signaling Pathway. Technol Cancer Res Treat 2021; 20:15330338211039940. [PMID: 34520285 PMCID: PMC8445537 DOI: 10.1177/15330338211039940] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is a common cancer in East Asia and in other parts of the world and exhibits a poor prognosis. Growth inhibitor 5 (ING5) is a new member of the growth inhibitor (ING) protein family and is involved in many important cellular functions, such as the cell cycle, apoptosis, and chromatin remodeling. As a newly discovered tumor suppressor, ING5 has been shown to inhibit lung cancer proliferation and distant metastasis through the AKT pathway. In lung cancer tumors, ING5 can attenuate the ability of cancer cells to invade normal tumor-adjacent tissues. However, ING5 has rarely been studied in ESCC. Here, we found that in ESCC EC-109 cancer cells, ING5 overexpression inhibited cell proliferation and tumor invasion, whereas, in ESCC TE-1 cancer cells, ING5 knockdown promoted cell invasion. In a nude mouse xenograft model, ING5 overexpression inhibited tumor growth and the invasion ability of ESCC cells. Further studies revealed that ING5 overexpression inhibited IL-6/CXCL12 expression at both the mRNA and protein levels as well as morphological changes. We found for the first time that ING5 inhibits ESCC cell migration and invasion by downregulating the IL-6/CXCL12 signaling pathway.
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Affiliation(s)
- Yali Wang
- Henan Provincial Chest Hospital, Zhengzhou, P.R. China
| | - Jiao Tan
- Henan Provincial Chest Hospital, Zhengzhou, P.R. China
| | - Jing Li
- Henan Provincial Chest Hospital, Zhengzhou, P.R. China
| | - Huihui Chen
- Henan Provincial Chest Hospital, Zhengzhou, P.R. China
| | - Wei Wang
- Henan Provincial Chest Hospital, Zhengzhou, P.R. China
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10
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Jiang J, Wang HJ, Mou XZ, Zhang H, Chen Y, Hu ZM. Low Expression of KAT6B May Affect Prognosis in Hepatocellular Carcinoma. Technol Cancer Res Treat 2021; 20:15330338211033063. [PMID: 34464167 PMCID: PMC8411621 DOI: 10.1177/15330338211033063] [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: 12/24/2022] Open
Abstract
Aims: Lysine acetyltransferase 6B (KAT6B), is a histone acetyltransferase
implicated to have a role in tumor suppression. However, the relationship
between KAT6B and hepatocellular carcinoma (HCC) is unclear. The purpose of
this study was to detect the expression of KAT6B in HCC tissues and analyze
its connection with the clinicopathological features of HCC. Methods: First, we performed immunohistochemical staining on 250 HCC tissues and 222
non-tumor liver tissues to examine the expression of KAT6B.Then the relation
between KAT6B expression and clinicopathological parameters was analyzed by
chi-square test, and the overall survival analysis was conducted by
Kaplan-Meier survival method. In addition, based on the Oncomine expression
array online and the UALCAN database, we compared KAT6B expression
differences between normal liver tissues and HCC tissues more broadly. Results: Compared with normal tissues, KAT6B expression was significantly lower in HCC
tissues. Low KAT6B expression was found to be related to gender, AFP level,
and tumor size. According to the online database, KAT6B expression was found
to be decreased in HCC tissues and high in normal tissues. Conclusions: Lower expression of KAT6B is associated with poor prognosis of HCC, and KAT6B
may be a potential tumor suppressor in liver cancer.
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Affiliation(s)
- Junjie Jiang
- Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.,Clinical Research Institute, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China.,Department of Hepatobiliary and Pancreatic Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China
| | - Hui-Ju Wang
- Clinical Research Institute, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China
| | - Xiao-Zhou Mou
- Clinical Research Institute, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China
| | - Huanqing Zhang
- Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.,Clinical Research Institute, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China.,Department of Hepatobiliary and Pancreatic Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China
| | - YiZhen Chen
- Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.,Clinical Research Institute, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China.,Department of Hepatobiliary and Pancreatic Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China
| | - Zhi-Ming Hu
- Department of Hepatobiliary and Pancreatic Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang Province, China
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11
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Jacquet K, Binda O. ING Proteins: Tumour Suppressors or Oncoproteins. Cancers (Basel) 2021; 13:cancers13092110. [PMID: 33925563 PMCID: PMC8123807 DOI: 10.3390/cancers13092110] [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: 03/03/2021] [Accepted: 03/25/2021] [Indexed: 02/06/2023] Open
Abstract
The INhibitor of Growth family was defined in the mid-1990s by the identification of a tumour suppressor, ING1, and subsequent expansion of the family based essentially on sequence similarities. However, later work and more recent investigations demonstrate that at least a few ING proteins are actually required for normal proliferation of eukaryotic cells, from yeast to human. ING proteins are also part of a larger family of chromatin-associated factors marked by a plant homeodomain (PHD), which mediates interactions with methylated lysine residues. Herein, we discuss the role of ING proteins and their various roles in chromatin signalling in the context of cancer development and progression.
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Affiliation(s)
- Karine Jacquet
- Institut NeuroMyoGène (INMG), Université Claude Bernard Lyon 1, Université de Lyon, CNRS UMR 5310, INSERM U 1217, 69008 Lyon, France;
| | - Olivier Binda
- Institut NeuroMyoGène (INMG), Université Claude Bernard Lyon 1, Université de Lyon, CNRS UMR 5310, INSERM U 1217, 69008 Lyon, France;
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
- Correspondence:
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12
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Tam C, Rao S, Waye MMY, Ng TB, Wang CC. Autophagy signals orchestrate chemoresistance of gynecological cancers. Biochim Biophys Acta Rev Cancer 2021; 1875:188525. [PMID: 33600824 DOI: 10.1016/j.bbcan.2021.188525] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 02/10/2021] [Accepted: 02/11/2021] [Indexed: 12/14/2022]
Abstract
Gynecological cancers are characterized by a high mortality rate when chemoresistance develops. Autophagy collaborates with apoptosis and participates in homeostasis of chemoresistance. Recent findings supported that crosstalk of necrotic, apoptotic and autophagic factors, and chemotherapy-driven hypoxia, oxidative stress and ER stress play critical roles in chemoresistance in gynecological cancers. Meanwhile, current studies have shown that autophagy could be regulated by and cooperate with metabolic regulator, survival factors, stemness factors and specific post-translation modification in chemoresistant tumor cells. Meanwhile, non-coding RNA and autophagy crosstalk also contribute to the chemoresistance. Until now, analysis of individual autophagy factors towards the clinical significance and chemoresistance in gynecological cancer is still lacking. We suggest comprehensive integrated analysis of cellular homeostasis and tumor microenvironment to clarify the role of autophagy and the associated factors in cancer progression and chemoresistance. Panel screening of pan-autophagic factors will pioneer the development of risk models for predicting efficacy of chemotherapy and guidelines for systematic treatment and precision medicine.
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Affiliation(s)
- Chit Tam
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, China.
| | - Shitao Rao
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China; School of Medical Technology and Engineering, Fujian Medical University, Fujian, China
| | - Mary Miu Yee Waye
- The Nethersole School of Nursing, The Chinese University of Hong Kong, Hong Kong, China
| | - Tzi Bun Ng
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Chi Chiu Wang
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, China; School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China; Reproduction and Development Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.
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13
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Xin H, Wang C, Chi Y, Liu Z. MicroRNA-196b-5p promotes malignant progression of colorectal cancer by targeting ING5. Cancer Cell Int 2020; 20:119. [PMID: 32308564 PMCID: PMC7149860 DOI: 10.1186/s12935-020-01200-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 03/31/2020] [Indexed: 12/21/2022] Open
Abstract
Background miR-196b-5p expression is deregulated in many malignant tumors. Although miR-196b-5p has been implicated in the malignant transformation of colorectal cancer, its role in this specific type of cancer has not been fully explored. Thus, the present study was aimed to examine the cellular function of miR-196b-5p and its role in malignant biological behavior in colorectal cancer. Methods miR-196b-5p expression was measured in colorectal cancer tissues and cell lines using quantitative real-time PCR. Cell counting kit-8 (CCK-8) assay and Transwell assay were used to detect proliferation, migration, and invasion in cell lines, whereas flow cytometry was applied to study apoptosis. Western blot analysis was performed to measure the protein levels. Dual luciferase reporter assay was used to investigate the interaction between miR-196b-5p and ING5. Tumor formation was evaluated in mice. Results MiR-196b-5p was abundantly expressed in colorectal cancer tissues and cell lines, whereas ING5 was expressed at low levels. MiR-196b-5p was successfully overexpressed or knocked down in colorectal cancer cells. We found that miR-196b-5p overexpression significantly accelerated the proliferation, cell cycle, migration and invasion, while inhibited cell apoptosis in colorectal cancer cells. However, miR-196b-5p inhibitor showed the opposite effects. Moreover, ING5 overexpression or knockdown was successfully performed in colorectal cancer cells. ING5 overexpression suppressed proliferation, migration, invasion, the phosphorylation of PI3K, Akt as well as MEK, and promoted cell apoptosis, which could be reversed by ING5 knockdown. Additionally, ING5 was identified as a target of miR-196b-5p through bioinformatics analysis and a luciferase activity assay. Furthermore, ING5 knockdown could attenuate the decrease in proliferation, migration, invasion, and the protein levels of p-PI3K, p-Akt, and p-MEK, which were induced by miRNA-196b-5p inhibitor. Besides, miR-196b-5p knockdown inhibited tumor growth, whereas ING5 knockdown elevated it in vivo. Conclusions In conclusion, miR-196b-5p promotes cell proliferation, migration, invasion, and inhibits apoptosis in colorectal cancer by targeting ING5.
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Affiliation(s)
- He Xin
- Department of Radiology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang, 110004 People's Republic of China
| | - Chuanzhuo Wang
- Department of Radiology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang, 110004 People's Republic of China
| | - Yuan Chi
- Department of Radiology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang, 110004 People's Republic of China
| | - Zhaoyu Liu
- Department of Radiology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang, 110004 People's Republic of China
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14
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Trinh DA, Shirakawa R, Kimura T, Sakata N, Goto K, Horiuchi H. Inhibitor of Growth 4 (ING4) is a positive regulator of rRNA synthesis. Sci Rep 2019; 9:17235. [PMID: 31754246 PMCID: PMC6872537 DOI: 10.1038/s41598-019-53767-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 08/30/2019] [Indexed: 01/29/2023] Open
Abstract
Ribosome biogenesis is essential for maintaining basic cellular activities although its mechanism is not fully understood. Inhibitor of growth 4 (ING4) is a member of ING family while its cellular functions remain controversial. Here, we identified several nucleolar proteins as novel ING4 interacting proteins. ING4 localized in the nucleus with strong accumulation in the nucleolus through its plant homeodomain, which is known to interact with histone trimethylated H3K4, commonly present in the promoter of active genes. ING4 deficient cells exhibited slower proliferation and the alteration in nucleolar structure with reduced rRNA transcription, which was rescued by exogenous expression of GFP-ING4 to the similar levels of wild type cells. In the ING4 deficient cells, histone H3K9 acetylation and the key rRNA transcription factor UBF at the promoter of rDNA were reduced, both of which were also recovered by exogenous GFP-ING4 expression. Thus, ING4 could positively regulate rRNA transcription through modulation of histone modifications at the rDNA promoter.
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Affiliation(s)
- Duc-Anh Trinh
- Department of Oral Cancer Therapeutics, Graduate School of Dentistry, Tohoku University, Sendai, Japan.,Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Ryutaro Shirakawa
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Tomohiro Kimura
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan.,Research Center for Molecular Genetics, Institute for Promotion of Medical Science Research, Yamagata University Faculty of Medicine, Yamagata, Yamagata, Japan
| | - Natsumi Sakata
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Kota Goto
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Hisanori Horiuchi
- Department of Oral Cancer Therapeutics, Graduate School of Dentistry, Tohoku University, Sendai, Japan. .,Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan.
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15
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Ormaza G, Rodríguez JA, Ibáñez de Opakua A, Merino N, Villate M, Gorroño I, Rábano M, Palmero I, Vilaseca M, Kypta R, Vivanco MDM, Rojas AL, Blanco FJ. The Tumor Suppressor ING5 Is a Dimeric, Bivalent Recognition Molecule of the Histone H3K4me3 Mark. J Mol Biol 2019; 431:2298-2319. [PMID: 31026448 DOI: 10.1016/j.jmb.2019.04.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 04/10/2019] [Accepted: 04/10/2019] [Indexed: 10/26/2022]
Abstract
The INhibitor of Growth (ING) family of tumor suppressors regulates the transcriptional state of chromatin by recruiting remodeling complexes to sites with histone H3 trimethylated at lysine 4 (H3K4me3). This modification is recognized by the plant homeodomain (PHD) present at the C-terminus of the five ING proteins. ING5 facilitates histone H3 acetylation by the HBO1 complex, and also H4 acetylation by the MOZ/MORF complex. We show that ING5 forms homodimers through its N-terminal domain, which folds independently into an elongated coiled-coil structure. The central region of ING5, which contains the nuclear localization sequence, is flexible and disordered, but it binds dsDNA with micromolar affinity. NMR analysis of the full-length protein reveals that the two PHD fingers of the dimer are chemically equivalent and independent of the rest of the molecule, and they bind H3K4me3 in the same way as the isolated PHD. We have observed that ING5 can form heterodimers with the highly homologous ING4, and that two of three primary tumor-associated mutants in the N-terminal domain strongly destabilize the coiled-coil structure. They also affect cell proliferation and cell cycle phase distribution, suggesting a driver role in cancer progression.
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Affiliation(s)
- Georgina Ormaza
- CIC bioGUNE, Parque Tecnológico de Bizkaia, 48160 Derio, Spain
| | | | | | - Nekane Merino
- CIC bioGUNE, Parque Tecnológico de Bizkaia, 48160 Derio, Spain
| | - Maider Villate
- CIC bioGUNE, Parque Tecnológico de Bizkaia, 48160 Derio, Spain
| | - Irantzu Gorroño
- CIC bioGUNE, Parque Tecnológico de Bizkaia, 48160 Derio, Spain
| | - Miriam Rábano
- CIC bioGUNE, Parque Tecnológico de Bizkaia, 48160 Derio, Spain
| | - Ignacio Palmero
- Instituto de Investigaciones Biomédicas "Alberto Sols", CSIC-UAM, 28029 Madrid, Spain
| | - Marta Vilaseca
- Institute for Research in Biomedicine, 08028 Barcelona, Spain
| | - Robert Kypta
- CIC bioGUNE, Parque Tecnológico de Bizkaia, 48160 Derio, Spain; Department of Surgery and Cancer, Imperial College London, London, W12 0NN, UK
| | | | - Adriana L Rojas
- CIC bioGUNE, Parque Tecnológico de Bizkaia, 48160 Derio, Spain
| | - Francisco J Blanco
- CIC bioGUNE, Parque Tecnológico de Bizkaia, 48160 Derio, Spain; IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain.
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16
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Regulat-INGs in tumors and diseases: Focus on ncRNAs. Cancer Lett 2019; 447:66-74. [PMID: 30673590 DOI: 10.1016/j.canlet.2019.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 12/21/2018] [Accepted: 01/08/2019] [Indexed: 12/11/2022]
Abstract
ING family genes (Inhibitor of Growth) are tumor suppressor genes that play a vital role in cell homeostasis. It has been shown that their expression is lost or diminished in many cancers and other diseases. The main mechanisms by which they are regulated in oncogenesis have not yet been fully elucidated. The involvement of non-coding RNAs (ncRNAs) and in particular microRNAs (miRNAs) in post-transcriptional gene regulation is well established. miRNAs are short sequences (18-25 nucleotides) that can bind to the 3 'UTR sequence of the targeted messenger RNA (mRNA), leading to its degradation or translational repression. Interactions between the ING family and miRNAs have been described in some cancers but also in other diseases. The involvement of miRNAs in ING family regulation opens up new fields of investigation, particularly for targeted therapies. In this review, we will summarize the regulatory mechanisms at the RNA and protein level of the ING family and focus on the interactions with ncRNAs.
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17
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Hou J, Wang L, Wu D. The root of Actinidia chinensis inhibits hepatocellular carcinomas cells through LAMB3. Cell Biol Toxicol 2018; 34:321-332. [PMID: 29127567 DOI: 10.1007/s10565-017-9416-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 10/05/2017] [Indexed: 12/14/2022]
Abstract
The root of Actinidia chinensis, as traditional Chinese medicine, has been shown to inhibit cell proliferation in numerous cancer cells. However, the mechanisms underlying its inhibitory activity remain unclear. Death rates of hepatocellular carcinoma (HCC) are increasing, but therapies for advanced HCC are not well developed. We choose the extract from root of Actinidia chinensis (ERAC) to treat the HCC cell lines in vitro, displaying distinct effects on cell proliferation, S-phase cell cycle arrest, and apoptosis. LAMB3, the gene encoding laminin subunit beta-3, plays a key role in the proliferation suppression and S-phase cell cycle arrest of HepG2 cells treated with ERAC. The downstream genes ITGA3, CCND2, and TP53 in LAMB3 pathway show the same response to ERAC as LAMB3. Thus, LAMB3 pathways, along with extracellular matrix-receptor interaction, pathways in cancer, and focal adhesion, are involved in the ERAC-induced suppressive response in HepG2.
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Affiliation(s)
- Jiayun Hou
- Zhongshan Hospital Institute of Clinical Science, Shanghai Institute of Clinical Bioinformatics; Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Lingyan Wang
- Zhongshan Hospital Institute of Clinical Science, Shanghai Institute of Clinical Bioinformatics; Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Duojiao Wu
- Zhongshan Hospital Institute of Clinical Science, Shanghai Institute of Clinical Bioinformatics; Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
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18
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Wang F, Wang AY, Chesnelong C, Yang Y, Nabbi A, Thalappilly S, Alekseev V, Riabowol K. ING5 activity in self-renewal of glioblastoma stem cells via calcium and follicle stimulating hormone pathways. Oncogene 2017; 37:286-301. [PMID: 28925404 PMCID: PMC5799773 DOI: 10.1038/onc.2017.324] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 07/10/2017] [Accepted: 07/28/2017] [Indexed: 12/13/2022]
Abstract
Stem cell-like brain tumor initiating cells (BTICs) cause recurrence of glioblastomas, with BTIC 'stemness' affected by epigenetic mechanisms. The ING family of epigenetic regulators (ING1-5) function by targeting histone acetyltransferase (HAT) or histone deacetylase complexes to the H3K4me3 mark to alter histone acetylation and subsequently, gene expression. Here we find that ectopic expression of ING5, the targeting subunit of HBO1, MOZ and MORF HAT complexes increases expression of the Oct4, Olig2 and Nestin stem cell markers, promotes self-renewal, prevents lineage differentiation and increases stem cell pools in BTIC populations. This activity requires the plant homeodomain region of ING5 that interacts specifically with the H3K4me3 mark. ING5 also enhances PI3K/AKT and MEK/ERK activity to sustain self-renewal of BTICs over serial passage of stem cell-like spheres. ING5 exerts these effects by activating transcription of calcium channel and follicle stimulating hormone pathway genes. In silico analyses of The Cancer Genome Atlas data suggest that ING5 is a positive regulator of BTIC stemness, whose expression negatively correlates with patient prognosis, especially in the Proneural and Classical subtypes, and in tumors with low SOX2 expression. These data suggest that altering histone acetylation status and signaling pathways induced by ING5 may provide useful clinical strategies to target tumor resistance and recurrence in glioblastoma.
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Affiliation(s)
- F Wang
- Department of Biochemistry & Molecular Biology, University of Calgary, Calgary, AB, Canada.,Department of Oncology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - A Y Wang
- Department of Oncology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Hotchkiss Brain Institute, Department of Cell Biology and Anatomy, University of Calgary, Calgary, AB, Canada
| | - C Chesnelong
- Department of Oncology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Hotchkiss Brain Institute, Department of Cell Biology and Anatomy, University of Calgary, Calgary, AB, Canada
| | - Y Yang
- Department of Biochemistry & Molecular Biology, University of Calgary, Calgary, AB, Canada.,Department of Oncology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Department of Obstetrics and Gynecology, The First Affiliated Hospital of Harbin Medical University, Heilongjiang, China
| | - A Nabbi
- Department of Biochemistry & Molecular Biology, University of Calgary, Calgary, AB, Canada.,Department of Oncology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - S Thalappilly
- Department of Biochemistry & Molecular Biology, University of Calgary, Calgary, AB, Canada.,Department of Oncology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - V Alekseev
- Department of Biochemistry & Molecular Biology, University of Calgary, Calgary, AB, Canada
| | - K Riabowol
- Department of Biochemistry & Molecular Biology, University of Calgary, Calgary, AB, Canada.,Department of Oncology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
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19
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Zhao S, Zhao ZJ, He HY, Wu JC, Ding XQ, Yang L, Jia N, Li ZJ, Zheng HC. The roles of ING5 in gliomas: a good marker for tumorigenesis and a potential target for gene therapy. Oncotarget 2017; 8:56558-56568. [PMID: 28915612 PMCID: PMC5593583 DOI: 10.18632/oncotarget.17802] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 04/28/2017] [Indexed: 12/13/2022] Open
Abstract
To elucidate the anti-tumor effects and molecular mechanisms of ING5 on glioma cells, we overexpressed it in U87 cells, and examined the phenotypes and their relevant molecules. It was found that ING5 overexpression suppressed proliferation, energy metabolism, migration, invasion, and induced G2/M arrest, apoptosis, dedifferentiation, senescence, mesenchymal- epithelial transition and chemoresistance to cisplatin, MG132, paclitaxel and SAHA in U87 cells. There appeared a lower expression of N-cadherin, Twist, Slug, Zeb1, Zeb2, Snail, Ac-H3, Ac-H4, Cdc2, Cdk4 and XIAP, but a higher expression of Claudin 1, Histones 3 and 4, p21, p53, Bax, β-catenin, PI3K, Akt, and p-Akt in ING5 transfectants. ING5 overexpression suppressed tumor growth of U87 cells in nude mice by inhibiting proliferation and inducing apoptosis. Down-regulated ING5 expression was closely linked to the tumorigenesis and histogenesis of glioma. These data indicated that ING5 expression might be considered as a good marker for the tumorigenesis and histogenesis of gliomas. It might be employed as a potential target for gene therapy of glioma. PI3K/Akt or β-catenin/TCF-4 activation might be positively linked to chemotherapeutic resistance, mediated by ING5.
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Affiliation(s)
- Shuang Zhao
- Department of Experimental Oncology and Animal Center, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Zhi-Juan Zhao
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121001, China
| | - Hao-Yu He
- Department of Experimental Oncology and Animal Center, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Ji-Cheng Wu
- Department of Experimental Oncology and Animal Center, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Xiao-Qing Ding
- Department of Experimental Oncology and Animal Center, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Lei Yang
- Department of Experimental Oncology and Animal Center, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Ning Jia
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121001, China
| | - Zhi-Jie Li
- Department of Experimental Oncology and Animal Center, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Hua-Chuan Zheng
- Department of Experimental Oncology and Animal Center, Shengjing Hospital of China Medical University, Shenyang 110004, China
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Li J, Vervoorts J, Carloni P, Rossetti G, Lüscher B. Structural prediction of the interaction of the tumor suppressor p27 KIP1 with cyclin A/CDK2 identifies a novel catalytically relevant determinant. BMC Bioinformatics 2017; 18:15. [PMID: 28056778 PMCID: PMC5217639 DOI: 10.1186/s12859-016-1411-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 12/07/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The cyclin-dependent kinase 2 (CDK2) together with its cyclin E and A partners is a central regulator of cell growth and division. Deregulation of CDK2 activity is associated with diseases such as cancer. The analysis of substrates identified S/T-P-X-R/K/H as the CDK2 consensus sequence. The crystal structure of cyclin A/CDK2 with a short model peptide supports this sequence and identifies key interactions. However, CDKs use additional determinants to recognize substrates, including the RXL motif that is read by the cyclin subunits. We were interested to determine whether additional amino acids beyond the minimal consensus sequence of the well-studied substrate and tumor suppressor p27KIP1 were relevant for catalysis. RESULTS To address whether additional amino acids, close to the minimal consensus sequence, play a role in binding, we investigate the interaction of cyclin A/CDK2 with an in vivo cellular partner and CDK inhibitor p27KIP1. This protein is an intrinsically unfolded protein and, in particular, the C-terminal half of the protein has not been accessible to structural analysis. This part harbors the CDK2 phosphorylation site. We used bioinformatics tools, including MODELLER, iTASSER and HADDOCK, along with partial structural information to build a model of the C-terminal region of p27KIP1 with cyclin A/CDK2. This revealed novel interactions beyond the consensus sequence with a proline and a basic amino acid at the P + 1 and the P + 3 sites, respectively. We suggest that the lysine at P + 2 might regulate the reversible association of the second counter ion in the active site of CDK2. The arginine at P + 7 interacts with both cyclin A and CDK2 and is important for the catalytic turnover rate. CONCLUSION Our modeling identifies additional amino acids in p27KIP1 beyond the consensus sequence that contribute to the efficiency of substrate phosphorylation.
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Affiliation(s)
- Jinyu Li
- College of Chemistry, Fuzhou University, Fuzhou, 350002, China.,Institute of Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, 52057, Aachen, Germany.,Computational Biomedicine, Institute for Advanced Simulation IAS-5 and Institute of Neuroscience and Medicine INM-9, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - Jörg Vervoorts
- Institute of Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, 52057, Aachen, Germany
| | - Paolo Carloni
- Computational Biomedicine, Institute for Advanced Simulation IAS-5 and Institute of Neuroscience and Medicine INM-9, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - Giulia Rossetti
- Computational Biomedicine, Institute for Advanced Simulation IAS-5 and Institute of Neuroscience and Medicine INM-9, Forschungszentrum Jülich, 52425, Jülich, Germany. .,Department of Oncology, Hematology and Stem Cell Transplantation, Medical School, RWTH Aachen University, Aachen, Germany. .,Jülich Supercomputing Centre (JSC), Forschungszentrum Jülich, 52425, Jülich, Germany.
| | - Bernhard Lüscher
- Institute of Biochemistry and Molecular Biology, Medical School, RWTH Aachen University, 52057, Aachen, Germany.
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Wang J, Yang T, Xu G, Liu H, Ren C, Xie W, Wang M. Cyclin-Dependent Kinase 2 Promotes Tumor Proliferation and Induces Radio Resistance in Glioblastoma. Transl Oncol 2016; 9:548-556. [PMID: 27863310 PMCID: PMC5118617 DOI: 10.1016/j.tranon.2016.08.007] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 08/18/2016] [Accepted: 08/18/2016] [Indexed: 11/03/2022] Open
Abstract
Accumulating evidence indicates that CDK2 promotes hyperproliferation and is associated to poor prognosis in multiple cancer cells. However, the physiological role of CDK2 in GBM and the biological mechanism still remains unclear. In this study, we identified that CDK2 expression was significantly enriched in GBM tumors compared with normal brain. Additionally, CDK2 was functionally required for tumor proliferation and its expression was associated to poor prognosis in GBM patients. Mechanically, CDK2 induced radio resistance in GBM cells and CDK2 knock down increased cell apoptosis when combined with radiotherapy. Therapeutically, we found that CDK2 inhibitor attenuated tumor growth both in vitro and in vivo. Collectively, CDK2 promotes proliferation, induces radio resistance in GBM, and could become a therapeutic target for GBM.
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Affiliation(s)
- Jia Wang
- Department of Neurosurgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China; School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Tong Yang
- Department of Neurosurgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China; School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Gaofeng Xu
- Department of Neurosurgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Hao Liu
- Department of Neurosurgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Chunying Ren
- Department of Neurosurgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Wanfu Xie
- Department of Neurosurgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China.
| | - Maode Wang
- Department of Neurosurgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China.
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Lin SC, Gou GH, Hsia CW, Ho CW, Huang KL, Wu YF, Lee SY, Chen YH. Simulated Microgravity Disrupts Cytoskeleton Organization and Increases Apoptosis of Rat Neural Crest Stem Cells Via Upregulating CXCR4 Expression and RhoA-ROCK1-p38 MAPK-p53 Signaling. Stem Cells Dev 2016; 25:1172-93. [PMID: 27269634 DOI: 10.1089/scd.2016.0040] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Neural crest stem cells (NCSCs) are a population of multipotent stem cells that are distributed broadly in many tissues and organs and are capable of differentiating into a variety of cell types that are dispersed throughout three germ layers. We are interested in studying the effects of simulated microgravity on the survival and self-renewal of NCSCs. NCSCs extracted from the hair follicle bulge region of the rat whisker pad were cultured in vitro, respectively, in a 2D adherent environment and a 3D suspension environment using the rotatory cell culture system (RCCS) to simulate microgravity. We found that rat NCSCs (rNCSCs) cultured in the RCCS for 24 h showed disrupted organization of filamentous actin, increased globular actin level, formation of plasma membrane blebbing and neurite-like artifact, as well as decreased levels of cortactin and vimentin. Interestingly, ∼70% of RCCS-cultured rNCSCs co-expressed cleaved (active) caspase-3 and neuronal markers microtubule-associated protein 2 (MAP2) and Tuj1 instead of NCSC markers, suggesting stress-induced formation of neurite-like artifact in rNCSCs. In addition, rNCSCs showed increased C-X-C chemokine receptor 4 (CXCR4) expression, RhoA GTPase activation, Rho-associated kinase 1 (ROCK1) and p38 mitogen-activated protein kinase (MAPK) phosphorylation, and p53 expression in the nucleus. Incubation of rNCSCs with the Gα protein inhibitor pertussis toxin or CXCR4 siRNA during RCCS-culturing prevented cytoskeleton disorganization and plasma membrane blebbing, and it suppressed apoptosis of rNCSCs. Taken together, we demonstrate for the first time that simulated microgravity disrupts cytoskeleton organization and increases apoptosis of rNCSCs via upregulating CXCR4 expression and the RhoA-ROCK1-p38 MAPK-p53 signaling pathway.
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Affiliation(s)
- Shing-Chen Lin
- 1 Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center , Neihu District, Taipei City, Taiwan
| | - Guo-Hau Gou
- 2 Graduate Institute of Medical Sciences, National Defense Medical Center , Neihu District, Taipei City, Taiwan
| | - Ching-Wu Hsia
- 2 Graduate Institute of Medical Sciences, National Defense Medical Center , Neihu District, Taipei City, Taiwan
| | - Cheng-Wen Ho
- 1 Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center , Neihu District, Taipei City, Taiwan .,3 Division of Rehabilitation Medicine, Taoyuan Armed Forces General Hospital , Longtan Township, Taoyuan County, Taiwan
| | - Kun-Lun Huang
- 1 Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center , Neihu District, Taipei City, Taiwan .,4 Department of Undersea and Hyperbaric Medicine, Tri-Service General Hospital , Neihu District, Taipei City, Taiwan
| | - Yung-Fu Wu
- 5 Department of Medical Research, Tri-Service General Hospital , Neihu District, Taipei City, Taiwan
| | - Shih-Yu Lee
- 1 Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center , Neihu District, Taipei City, Taiwan
| | - Yi-Hui Chen
- 1 Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center , Neihu District, Taipei City, Taiwan
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