1
|
Zhang Y, Wang C, Wu L, Bai C, Huang K, Yao L, Zhang Z, Ye L, Liu R, Ge X, Xu M, Zhao Y, Cao Q. Epithelial CRL4 DCAF2 Is Critical for Maintaining Intestinal Homeostasis Against DSS-Induced Colitis by Regulating the Proliferation and Repair of Intestinal Epithelial Cells. Dig Dis Sci 2024; 69:66-80. [PMID: 37968554 DOI: 10.1007/s10620-023-08147-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 06/21/2023] [Indexed: 11/17/2023]
Abstract
BACKGROUND AND AIMS Inflammatory bowel disease (IBD) is currently gaining an increasing global interest. Intestinal epithelial barrier dysfunction is crucial toward developing IBD; however, the underlying mechanisms are not yet elucidated. This study is aimed at elucidating the function of CRL4DCAF2, an E3 ligase, toward mediating intestinal homeostasis. METHODS Colon samples were collected from patients with IBD and healthy individuals to examine the expression of CRL4DCAF2. CRL4DCAF2 conditional knockdown in mouse intestinal epithelial cells (IECs) (DCAF2EKD) were constructed. DCAF2EKD and their littermate control (DCAF2EWT) were treated with dextran sodium sulfate (DSS) to induce acute colitis. Transcriptome analysis was performed on inflamed colon samples obtained from the mice. Cell cycle regulators were evaluated using real-time polymerase chain reaction (PCR), while tight junction and apoptosis proteins were examined via immunofluorescence and western blot. RESULTS CRL4DCAF2 expression was significantly decreased in the inflamed IBD epithelium, and low expression of CRL4DCAF2 associated with high recurrence risk. Mice with DCAF2 specific knockout in IECs suffer from embryonic death. Multiple genes involved in cell proliferation, immune response, and gap junction were differentially expressed in inflamed colon from DCAF2EKD compared with DCAF2EWT. Furthermore, conditional downregulation of CRL4DCAF2 in the intestinal epithelium induced primarily epithelial damage, increased intestinal permeability, and diminished tight junction protein expression. In vivo and in vitro cell transfection experiments revealed that CRL4DCAF2 enhanced cell proliferation by promoting p21 ubiquitination and degradation, thereby inhibiting G2/M cell cycle. In addition, CRL4DCAF2 can also inhibit IEC apoptosis and promote cell autophagy. CONCLUSIONS CRL4DCAF2 downregulation in IECs promotes intestinal barrier dysfunction and inhibits IEC proliferation, thus making it more susceptible to inflammation.
Collapse
Affiliation(s)
- Yu Zhang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, 310016, Zhejiang, China
| | - Chaohui Wang
- Department of Gastroenterology, Taizhou Central Hospital, Taizhou, 318000, China
| | - Lexi Wu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, 310016, Zhejiang, China
| | - Chenhao Bai
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, 310016, Zhejiang, China
| | - Kaituo Huang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, 310016, Zhejiang, China
| | - Lingya Yao
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, 310016, Zhejiang, China
| | - Zhou Zhang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, 310016, Zhejiang, China
| | - Lingna Ye
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, 310016, Zhejiang, China
| | - Rongbei Liu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, 310016, Zhejiang, China
| | - Xiaolong Ge
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
| | - Mengque Xu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, 310016, Zhejiang, China
| | - Yuan Zhao
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, 310016, Zhejiang, China
| | - Qian Cao
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China.
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou, 310016, Zhejiang, China.
| |
Collapse
|
2
|
Zhang F, Qiu B, Ji Y, Zhang H, Song P, Sun N, Zhao L, Lv F, Yin L, Gao Y, Xue Q, Gao S, He J. Knockdown of GSG2 inhibits the development and progression of non-small cell lung cancer in vitro and in vivo. Cell Cycle 2023; 22:153-164. [PMID: 35972887 PMCID: PMC9817127 DOI: 10.1080/15384101.2022.2110441] [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: 07/12/2021] [Revised: 06/24/2022] [Accepted: 08/03/2022] [Indexed: 01/11/2023] Open
Abstract
Lung cancer has been recognized as the most common malignant neoplasm of the respiratory system with extremely high morbidity, among which non-small cell lung cancer (NSCLC) accounts for the majority. Many published literatures have revealed the roles of GSG2 in the progression of ovarian cancer, bladder cancer and breast cancer. However, there were no reports on the relationship between GSG2 and NSCLC. Herein, GSG2 was identified as a potential tumor promoter in NSCLC development, whose abundant expression was observed in NSCLC tissues compared with adjacent nonmalignant tissues and statistically correlated with more advanced tumor stage, more malignant grade and higher risk of lymphatic metastasis. Subsequent in vitro loss-of-function experiments indicated that GSG2 depletion could arrest cell cycle and suppress cell proliferation and migration while enhancing cell apoptosis. At the same time, the suppressive effects of GSG2 depletion on NSCLC development were verified by in vivo experiments. In conclusion, the current study identified GSG2 as a tumor promoter in development and progression of NSCLC, which could work as a novel therapeutic target for NSCLC.
Collapse
Affiliation(s)
- Fan Zhang
- Department of thoracic surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bin Qiu
- Department of thoracic surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ying Ji
- Department of thoracic surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hao Zhang
- Department of thoracic surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Peng Song
- Department of thoracic surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Nan Sun
- Department of thoracic surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Liang Zhao
- Department of thoracic surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Fang Lv
- Department of thoracic surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lixia Yin
- Department of central disease control, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yibo Gao
- Department of thoracic surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qi Xue
- Department of thoracic surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shugeng Gao
- Department of thoracic surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jie He
- Department of thoracic surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| |
Collapse
|
3
|
Reusswig KU, Bittmann J, Peritore M, Courtes M, Pardo B, Wierer M, Mann M, Pfander B. Unscheduled DNA replication in G1 causes genome instability and damage signatures indicative of replication collisions. Nat Commun 2022; 13:7014. [PMID: 36400763 PMCID: PMC9674678 DOI: 10.1038/s41467-022-34379-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 10/24/2022] [Indexed: 11/19/2022] Open
Abstract
DNA replicates once per cell cycle. Interfering with the regulation of DNA replication initiation generates genome instability through over-replication and has been linked to early stages of cancer development. Here, we engineer genetic systems in budding yeast to induce unscheduled replication in a G1-like cell cycle state. Unscheduled G1 replication initiates at canonical S-phase origins. We quantifiy the composition of replisomes in G1- and S-phase and identified firing factors, polymerase α, and histone supply as factors that limit replication outside S-phase. G1 replication per se does not trigger cellular checkpoints. Subsequent replication during S-phase, however, results in over-replication and leads to chromosome breaks and chromosome-wide, strand-biased occurrence of RPA-bound single-stranded DNA, indicating head-to-tail replication collisions as a key mechanism generating genome instability upon G1 replication. Low-level, sporadic induction of G1 replication induces an identical response, indicating findings from synthetic systems are applicable to naturally occurring scenarios of unscheduled replication initiation.
Collapse
Affiliation(s)
- Karl-Uwe Reusswig
- grid.418615.f0000 0004 0491 845XDNA Replication and Genome Integrity, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany ,grid.38142.3c000000041936754XPresent Address: Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115 USA ,grid.65499.370000 0001 2106 9910Present Address: Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02215 USA
| | - Julia Bittmann
- grid.418615.f0000 0004 0491 845XDNA Replication and Genome Integrity, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Martina Peritore
- grid.418615.f0000 0004 0491 845XDNA Replication and Genome Integrity, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany ,grid.7551.60000 0000 8983 7915Present Address: Genome Maintenance Mechanisms in Health and Disease, Institute of Aerospace Medicine, German Aerospace Center (DLR), 51147 Cologne, Germany
| | - Mathilde Courtes
- grid.433120.7Institut de Génétique Humaine (IGH), Université de Montpellier – Centre National de la Recherche Scientifique, 34396 Montpellier, France
| | - Benjamin Pardo
- grid.433120.7Institut de Génétique Humaine (IGH), Université de Montpellier – Centre National de la Recherche Scientifique, 34396 Montpellier, France
| | - Michael Wierer
- grid.418615.f0000 0004 0491 845XProteomics and Signal Transduction, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany ,grid.5254.60000 0001 0674 042XPresent Address: Proteomics Research Infrastructure, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Matthias Mann
- grid.418615.f0000 0004 0491 845XProteomics and Signal Transduction, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Boris Pfander
- grid.418615.f0000 0004 0491 845XDNA Replication and Genome Integrity, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany ,grid.7551.60000 0000 8983 7915Present Address: Genome Maintenance Mechanisms in Health and Disease, Institute of Aerospace Medicine, German Aerospace Center (DLR), 51147 Cologne, Germany ,grid.6190.e0000 0000 8580 3777Present Address: Genome Maintenance Mechanisms in Health and Disease, Institute of Genome Stability in Ageing and Disease, CECAD Research Center, University of Cologne, 50931 Cologne, Germany
| |
Collapse
|
4
|
Etemad-Moghadam S, Mohammadpour H, Alaeddini M. Distinctive expression of DNA replication factors in squamous cell carcinomas of the lip, face and oral cavity. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2022; 123:e828-e832. [PMID: 35217222 DOI: 10.1016/j.jormas.2022.02.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/09/2022] [Accepted: 02/21/2022] [Indexed: 11/19/2022]
Abstract
OBJECTIVE Uncontrolled proliferation and aberrations in cell-cycle progression are fundamental issues in cancer. In this study we aimed to determine and compare deoxyribonucleic acid (DNA) replication licensing factors at the mRNA and protein levels among squamous cell carcinomas (SCCs) of the lip, facial-skin and oral cavity. MATERIALS AND METHODS A total of 103 lip, oral and face SCCs were immunohistochemically stained with MCM2 (mini-chromosome maintenance 2), geminin, and ki67, and their labeling-indices were calculated. Also, 57 SCCs from the same regions along with their adjacent normal tissues underwent quantitative reverse transcription-polymerase chain reaction analysis. RESULTS All three proteins were overexpressed in the studied SCCs, but only geminin (P = 0.004) showed significant difference among the three regions, with higher levels in oral SCCs compared to lip (P = 0.005) and skin (P = 0.024) tumors. Geminin expression did not differ between skin- and lip-SCCs (P = 0.822). MCM2/ki67 ratio was higher in oral- compared to skin-neoplasms (P = 0.039), but no difference was found in geminin/ki67 among the SCC-subsites. There were significant differences in MCM2 and geminin mRNA between carcinomatous- and normal-tissues in all tumors, but not among the three locations. CONCLUSION MCM2 and geminin are involved in the tumorigenesis of lip, face and oral SCC at both mRNA- and protein-levels. Geminin may have a role in the site-specific biologic behavior of SCC. Skin SCCs had the highest proportion of licensed non-proliferating cells, while actively proliferating cells were more prominent in oral tumors. Regarding DNA replication, lip SCCs seem to be closer to skin tumors compared to their oral counterparts.
Collapse
Affiliation(s)
- Shahroo Etemad-Moghadam
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Ghods St, Enghelab Ave, P.O. Box: 14155-5583, Tehran 14174, Iran
| | - Hadiseh Mohammadpour
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Ghods St, Enghelab Ave, P.O. Box: 14155-5583, Tehran 14174, Iran
| | - Mojgan Alaeddini
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Ghods St, Enghelab Ave, P.O. Box: 14155-5583, Tehran 14174, Iran.
| |
Collapse
|
5
|
Bao M, Ma Y, Liang M, Sun X, Ju X, Yong Y, Liu X. Research progress on pharmacological effects and new dosage forms of baicalin. Vet Med Sci 2022; 8:2773-2784. [DOI: 10.1002/vms3.960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Minglong Bao
- Department of Veterinary Medicine, College of Coastal Agricultural Sciences Guangdong Ocean University Zhanjiang P. R. China
| | - Yunfei Ma
- College of Veterinary Medicine, China Agricultural University Beijing P. R. China
| | - Mei Liang
- Department of Veterinary Medicine, College of Coastal Agricultural Sciences Guangdong Ocean University Zhanjiang P. R. China
| | - Xinyi Sun
- Department of Veterinary Medicine, College of Coastal Agricultural Sciences Guangdong Ocean University Zhanjiang P. R. China
| | - Xianghong Ju
- Department of Veterinary Medicine, College of Coastal Agricultural Sciences Guangdong Ocean University Zhanjiang P. R. China
| | - Yanhong Yong
- Department of Veterinary Medicine, College of Coastal Agricultural Sciences Guangdong Ocean University Zhanjiang P. R. China
| | - Xiaoxi Liu
- Department of Veterinary Medicine, College of Coastal Agricultural Sciences Guangdong Ocean University Zhanjiang P. R. China
| |
Collapse
|
6
|
Proliferation and Immune Response Gene Signatures Associated with Clinical Outcome to Immunotherapy and Targeted Therapy in Metastatic Cutaneous Malignant Melanoma. Cancers (Basel) 2022; 14:cancers14153587. [PMID: 35892846 PMCID: PMC9331037 DOI: 10.3390/cancers14153587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/07/2022] [Accepted: 07/13/2022] [Indexed: 11/24/2022] Open
Abstract
Simple Summary The introduction of treatment with targeted therapies and immunotherapies has dramatically changed the outcome for patients with advanced cutaneous melanoma. However, only a subset of the patients has durable benefits from the treatment. This exploratory study aims to identify genes/gene signatures as predictive biomarkers for treatment outcomes in melanoma. Targeted transcriptomics and gene set enrichment analysis (GSEA) were applied in 28 melanoma samples collected before receiving treatment. Thirteen patients were treated with targeted therapy (TT) and 15 patients were treated with immune checkpoint inhibitors (ICI). Up-regulation of genes involved in immune processes was associated with a better outcome of TT. Down-regulation of proliferation and up-regulation of allograft rejection gene sets favored ICI patients. Further follow-up of the inverse relation between proliferation and allograft rejection gene signatures and relation to outcome is warranted. Abstract Targeted therapy (TT), together with immune checkpoint inhibitors (ICI), has significantly improved clinical outcomes for patients with advanced cutaneous malignant melanoma (CMM) during the last decade. However, the magnitude and the duration of response vary considerably. There is still a paucity of predictive biomarkers to identify patients who benefit most from treatment. To address this, we performed targeted transcriptomics of CMM tumors to identify biomarkers associated with clinical outcomes. Pre-treatment tumor samples from 28 patients with advanced CMM receiving TT (n = 13) or ICI (n = 15) were included in the study. Targeted RNA sequencing was performed using Ion AmpliSeq ™, followed by gene set enrichment analysis (GSEA) using MSigDB’s Hallmark Gene Set Collection to identify gene expression signatures correlating with treatment outcome. The GSEA demonstrated that up-regulation of allograft rejection genes, together with down-regulation of E2F and MYC targets as well as G2M checkpoint genes, significantly correlated with longer progression-free survival on ICI while IFNγ and inflammatory response genes were associated with a better clinical outcome on TT. In conclusion, we identify novel genes and their expression signatures as potential predictive biomarkers for TT and ICI in patients with metastatic CMM, paving the way for clinical use following larger validation studies.
Collapse
|
7
|
Kalogeropoulou A, Mougkogianni M, Iliadou M, Nikolopoulou E, Flordelis S, Kanellou A, Arbi M, Nikou S, Nieminuszczy J, Niedzwiedz W, Kardamakis D, Bravou V, Lygerou Z, Taraviras S. Intrinsic neural stem cell properties define brain hypersensitivity to genotoxic stress. Stem Cell Reports 2022; 17:1395-1410. [PMID: 35623353 PMCID: PMC9214316 DOI: 10.1016/j.stemcr.2022.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 04/28/2022] [Accepted: 04/29/2022] [Indexed: 11/25/2022] Open
Abstract
Impaired replication has been previously linked to growth retardation and microcephaly; however, why the brain is critically affected compared with other organs remains elusive. Here, we report the differential response between early neural progenitors (neuroepithelial cells [NECs]) and fate-committed neural progenitors (NPs) to replication licensing defects. Our results show that, while NPs can tolerate altered expression of licensing factors, NECs undergo excessive replication stress, identified by impaired replication, increased DNA damage, and defective cell-cycle progression, leading eventually to NEC attrition and microcephaly. NECs that possess a short G1 phase license and activate more origins than NPs, by acquiring higher levels of DNA-bound MCMs. In vivo G1 shortening in NPs induces DNA damage upon impaired licensing, suggesting that G1 length correlates with replication stress hypersensitivity. Our findings propose that NECs possess distinct cell-cycle characteristics to ensure fast proliferation, although these inherent features render them susceptible to genotoxic stress.
Collapse
Affiliation(s)
- Argyro Kalogeropoulou
- Department of Physiology, School of Medicine, University of Patras, Basic Medical Sciences Building, 1 Asklepiou Str., University Campus, 26504, Rio, Patras, Greece
| | - Maria Mougkogianni
- Department of Physiology, School of Medicine, University of Patras, Basic Medical Sciences Building, 1 Asklepiou Str., University Campus, 26504, Rio, Patras, Greece
| | - Marianna Iliadou
- Department of Physiology, School of Medicine, University of Patras, Basic Medical Sciences Building, 1 Asklepiou Str., University Campus, 26504, Rio, Patras, Greece
| | - Eleni Nikolopoulou
- Department of Physiology, School of Medicine, University of Patras, Basic Medical Sciences Building, 1 Asklepiou Str., University Campus, 26504, Rio, Patras, Greece
| | - Stefanos Flordelis
- Department of Physiology, School of Medicine, University of Patras, Basic Medical Sciences Building, 1 Asklepiou Str., University Campus, 26504, Rio, Patras, Greece
| | - Alexandra Kanellou
- Department of General Biology, School of Medicine, University of Patras, Patras, Greece
| | - Marina Arbi
- Department of General Biology, School of Medicine, University of Patras, Patras, Greece
| | - Sofia Nikou
- Department of Anatomy-Histology-Embryology, School of Medicine, University of Patras, Patras, Greece
| | | | | | - Dimitrios Kardamakis
- Department of Radiation Oncology, School of Medicine, University of Patras, Patras, Greece
| | - Vasiliki Bravou
- Department of Anatomy-Histology-Embryology, School of Medicine, University of Patras, Patras, Greece
| | - Zoi Lygerou
- Department of General Biology, School of Medicine, University of Patras, Patras, Greece
| | - Stavros Taraviras
- Department of Physiology, School of Medicine, University of Patras, Basic Medical Sciences Building, 1 Asklepiou Str., University Campus, 26504, Rio, Patras, Greece.
| |
Collapse
|
8
|
Yuan J, Lan H, Huang D, Guo X, Liu C, Liu S, Zhang P, Cheng Y, Xiao S. Multi-Omics Analysis of MCM2 as a Promising Biomarker in Pan-Cancer. Front Cell Dev Biol 2022; 10:852135. [PMID: 35693940 PMCID: PMC9174984 DOI: 10.3389/fcell.2022.852135] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 04/29/2022] [Indexed: 11/30/2022] Open
Abstract
Minichromosome maintenance 2 (MCM2) is a member of the minichromosomal maintenance family of proteins that mainly regulates DNA replication and the cell cycle and is involved in regulating cancer cell proliferation in various cancers. Previous studies have reported that MCM2 plays a pivotal role in cell proliferation and cancer development. However, few articles have systematically reported the pathogenic roles of MCM2 across cancers. Therefore, the present pan-cancer study was conducted. Various computational tools were used to investigate the MCM2 expression level, genetic mutation rate, and regulating mechanism, immune infiltration, tumor diagnosis and prognosis, therapeutic response and drug sensitivity of various cancers. The expression and function of MCM2 were examined by Western blotting and CCK-8 assays. MCM2 was significantly upregulated in almost all cancers and cancer subtypes in The Cancer Genome Atlas and was closely associated with tumor mutation burden, tumor stage, and immune therapy response. Upregulation of MCM2 expression may be correlated with a high level of alterations rate. MCM2 expression was associated with the infiltration of various immune cells and molecules and markedly associated with a poor prognosis. Western blotting and CCK-8 assays revealed that MCM2 expression was significantly upregulated in melanoma cell lines. Our results also suggested that MCM2 promotes cell proliferation in vitro by activating cell proliferation pathways such as the Akt signaling pathways. This study explored the oncogenic role of MCM2 across cancers, provided data on the underlying mechanisms of these cancers for further research and demonstrated that MCM2 may be a promising target for cancer immunotherapy.
Collapse
Affiliation(s)
- Jing Yuan
- Department of Gynecology and Obstetrics, Third Xiangya Hospital, Central South University, Changsha, China
| | - Hua Lan
- Department of Gynecology and Obstetrics, Third Xiangya Hospital, Central South University, Changsha, China
| | - Dongqing Huang
- Department of Gynecology and Obstetrics, Third Xiangya Hospital, Central South University, Changsha, China
- Department of Gynecology, The Second Hospital of Zhuzhou, Zhuzhou, China
| | - Xiaohui Guo
- Department of Gynecology and Obstetrics, Third Xiangya Hospital, Central South University, Changsha, China
| | - Chu Liu
- Department of Gynecology and Obstetrics, Third Xiangya Hospital, Central South University, Changsha, China
| | - Shuping Liu
- Department of Rehabilitation, Changsha Central Hospital of University of South China, Changsha, China
| | - Peng Zhang
- Graduate Collaborative Training Base of the Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, China
| | - Yan Cheng
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Yan Cheng, ; Songshu Xiao,
| | - Songshu Xiao
- Department of Gynecology and Obstetrics, Third Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Yan Cheng, ; Songshu Xiao,
| |
Collapse
|
9
|
Karantzelis N, Petropoulos M, De Marco V, Egan DA, Fish A, Christodoulou E, Will DW, Lewis JD, Perrakis A, Lygerou Z, Taraviras S. Small Molecule Inhibitor Targeting CDT1/Geminin Protein Complex Promotes DNA Damage and Cell Death in Cancer Cells. Front Pharmacol 2022; 13:860682. [PMID: 35548337 PMCID: PMC9083542 DOI: 10.3389/fphar.2022.860682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 03/30/2022] [Indexed: 01/18/2023] Open
Abstract
DNA replication initiation requires the loading of MCM2-7 complexes at the origins of replication during G1. Replication licensing renders chromatin competent for DNA replication and its tight regulation is essential to prevent aberrant DNA replication and genomic instability. CDT1 is a critical factor of licensing and its activity is controlled by redundant mechanisms, including Geminin, a protein inhibitor of CDT1. Aberrant CDT1 and Geminin expression have been shown to promote tumorigenesis in vivo and are also evident in multiple human tumors. In this study, we developed an in vitro AlphaScreen™ high-throughput screening (HTS) assay for the identification of small-molecule inhibitors targeting the CDT1/Geminin protein complex. Biochemical characterization of the most potent compound, AF615, provided evidence of specific, dose-dependent inhibition of Geminin binding to CDT1 both in-vitro and in cells. Moreover, compound AF615 induces DNA damage, inhibits DNA synthesis and reduces viability selectively in cancer cell lines, and this effect is CDT1-dependent. Taken together, our data suggest that AF615 may serve as a useful compound to elucidate the role of CDT1/Geminin protein complex in replication licensing and origin firing as well as a scaffold for further medicinal chemistry optimisation.
Collapse
Affiliation(s)
| | - Michalis Petropoulos
- Department of General Biology, Medical School, University of Patras, Patras, Greece
| | - Valeria De Marco
- Division of Biochemistry, Netherlands Cancer Institute, Amsterdam, Netherlands
| | - David A Egan
- Division of Biochemistry, Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Alexander Fish
- Division of Biochemistry, Netherlands Cancer Institute, Amsterdam, Netherlands
| | | | - David W Will
- Chemical Biology Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Joe D Lewis
- Chemical Biology Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Anastassis Perrakis
- Division of Biochemistry, Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Zoi Lygerou
- Department of General Biology, Medical School, University of Patras, Patras, Greece
| | - Stavros Taraviras
- Department of Physiology, Medical School, University of Patras, Patras, Greece
| |
Collapse
|
10
|
Wu G, Zhou J, Zhu X, Tang X, Liu J, Zhou Q, Chen Z, Liu T, Wang W, Xiao X, Wu T. Integrative analysis of expression, prognostic significance and immune infiltration of RFC family genes in human sarcoma. Aging (Albany NY) 2022; 14:3705-3719. [PMID: 35483337 PMCID: PMC9085243 DOI: 10.18632/aging.204039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 04/13/2022] [Indexed: 11/25/2022]
Abstract
Objective: To reveal the expression and prognostic value of replication factor C family genes (RFCs) in patients with sarcoma. Results: The results showed that the mRNA expression levels of RFC2, RFC3, RFC4, and RFC5 were increased in sarcoma tissues. In addition, Cancer Cell Line Encyclopedia (CCLE) dataset analysis indicated that RFC1, RFC2, RFC3, RFC4, and RFC5 were elevated expressed in sarcoma cell lines. Moreover, Gene Expression Profiling Interactive Analysis (GEPIA) and Kaplan-Meier Plotter showed that highly expressed RFC2-5 were associated with poor overall survival (OS) or relapse-free survival (RFS) in sarcoma patients. The results of the Tumor Immune Estimation Resource (TIMER) database indicated that the expression of RFCs was negatively correlated with the infiltration of CD4+ T cells and macrophages. Conclusions: There were significant differences in the expression of RFCs between normal tissue and sarcoma tissue, and RFC2, RFC3, RFC4, and RFC5 might be promising prognostic biomarkers for sarcoma. Methods: The expression of RFCs was analyzed using the ONCOMINE dataset and GEPIA dataset. CCLE dataset was used to assess the expression of RFCs in the cancer cell line. The prognostic value of RFCs was evaluated by GEPIA and Kaplan-Meier analysis. Furthermore, the association between RFCs and their co-expressed genes were explored via ONCOMINE and GEPIA datasets. We used the TIMER dataset to analyze the immune cell infiltration of RFCs in sarcoma.
Collapse
Affiliation(s)
- Gen Wu
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha 410011, Hunan, China.,Clinical Medicine Eight-Year Program, 02 Class, 2014 Grade, Central South University, Changsha 410013, Hunan Province, China
| | - Jian Zhou
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha 410011, Hunan, China
| | - Xi Zhu
- Department of Internal Medicine III, University Hospital, Ludwig Maximilian University, Munich 81377, Germany
| | - Xianzhe Tang
- Department of Orthopedics, Chenzhou No.1 People's Hospital, Chenzhou 423000, Hunan, China
| | - Jie Liu
- Department of Cardiology, The Fourth Hospital of Changsha, Changsha 410006, Hunan, China
| | - Qiong Zhou
- Department of Cardiology, The Fourth Hospital of Changsha, Changsha 410006, Hunan, China
| | - Ziyuan Chen
- Department of Orthopedics, The First People's Hospital of Changde City, Changde 415003, Hunan, China
| | - Tang Liu
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha 410011, Hunan, China
| | - Wanchun Wang
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha 410011, Hunan, China
| | - Xungang Xiao
- Department of Orthopedics, Chenzhou No.1 People's Hospital, Chenzhou 423000, Hunan, China
| | - Tong Wu
- Department of Emergency, The First Hospital of Changsha, Changsha 410005, Hunan, China
| |
Collapse
|
11
|
Agapito G, Cannataro M. Using BioPAX-Parser (BiP) to enrich lists of genes or proteins with pathway data. BMC Bioinformatics 2021; 22:376. [PMID: 34592927 PMCID: PMC8482563 DOI: 10.1186/s12859-021-04297-z] [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: 06/15/2021] [Accepted: 07/06/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Pathway enrichment analysis (PEA) is a well-established methodology for interpreting a list of genes and proteins of interest related to a condition under investigation. This paper aims to extend our previous work in which we introduced a preliminary comparative analysis of pathway enrichment analysis tools. We extended the earlier work by providing more case studies, comparing BiP enrichment performance with other well-known PEA software tools. METHODS PEA uses pathway information to discover connections between a list of genes and proteins as well as biological mechanisms, helping researchers to overcome the problem of explaining biological entity lists of interest disconnected from the biological context. RESULTS We compared the results of BiP with some existing pathway enrichment analysis tools comprising Centrality-based Pathway Enrichment, pathDIP, and Signaling Pathway Impact Analysis, considering three cancer types (colorectal, endometrial, and thyroid), for a total of six datasets (that is, two datasets per cancer type) obtained from the The Cancer Genome Atlas and Gene Expression Omnibus databases. We measured the similarities between the overlap of the enrichment results obtained using each couple of cancer datasets related to the same cancer. CONCLUSION As a result, BiP identified some well-known pathways related to the investigated cancer type, validated by the available literature. We also used the Jaccard and meet-min indices to evaluate the stability and the similarity between the enrichment results obtained from each couple of cancer datasets. The obtained results show that BiP provides more stable enrichment results than other tools.
Collapse
Affiliation(s)
- Giuseppe Agapito
- Department of Legal, Economic and Social Sciences, University "Magna Graecia", Catanzaro, Italy. .,Data Analytics Research Center, University "Magna Graecia", Catanzaro, Italy.
| | - Mario Cannataro
- Department of Medical and Surgical Sciences, University "Magna Graecia", Catanzaro, Italy. .,Data Analytics Research Center, University "Magna Graecia", Catanzaro, Italy.
| |
Collapse
|
12
|
Ravindran E, Gutierrez de Velazco C, Ghazanfar A, Kraemer N, Zaqout S, Waheed A, Hanif M, Mughal S, Prigione A, Li N, Fang X, Hu H, Kaindl AM. Homozygous mutation in MCM7 causes autosomal recessive primary microcephaly and intellectual disability. J Med Genet 2021; 59:453-461. [PMID: 34059554 PMCID: PMC9046757 DOI: 10.1136/jmedgenet-2020-107518] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 02/15/2021] [Accepted: 03/02/2021] [Indexed: 11/19/2022]
Abstract
Background Minichromosomal maintenance (MCM) complex components 2, 4, 5 and 6 have been linked to human disease with phenotypes including microcephaly and intellectual disability. The MCM complex has DNA helicase activity and is thereby important for the initiation and elongation of the replication fork and highly expressed in proliferating neural stem cells. Methods Whole-exome sequencing was applied to identify the genetic cause underlying the neurodevelopmental disease of the index family. The expression pattern of Mcm7 was characterised by performing quantitative real-time PCR, in situ hybridisation and immunostaining. To prove the disease-causative nature of identified MCM7, a proof-of-principle experiment was performed. Results We reported that the homozygous missense variant c.793G>A/p.A265T (g.7:99695841C>T, NM_005916.4) in MCM7 was associated with autosomal recessive primary microcephaly (MCPH), severe intellectual disability and behavioural abnormalities in a consanguineous pedigree with three affected individuals. We found concordance between the spatiotemporal expression pattern of Mcm7 in mice and a proliferative state: Mcm7 expression was higher in early mouse developmental stages and in proliferative zones of the brain. Accordingly, Mcm7/MCM7 levels were detectable particularly in undifferentiated mouse embryonal stem cells and human induced pluripotent stem cells compared with differentiated neurons. We further demonstrate that the downregulation of Mcm7 in mouse neuroblastoma cells reduces cell viability and proliferation, and, as a proof-of-concept, that this is counterbalanced by the overexpression of wild-type but not mutant MCM7. Conclusion We report mutations of MCM7 as a novel cause of autosomal recessive MCPH and intellectual disability and highlight the crucial function of MCM7 in nervous system development.
Collapse
Affiliation(s)
- Ethiraj Ravindran
- Institute of Cell Biology and Neurobiology, Charité Universitätsmedizin Berlin, Berlin, Germany.,Department of Pediatric Neurology, Charité Universitätsmedizin Berlin, Berlin, Germany.,Center for Chronically Sick Children (Sozialpädiatrisches Zentrum, SPZ), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Cynthia Gutierrez de Velazco
- Institute of Cell Biology and Neurobiology, Charité Universitätsmedizin Berlin, Berlin, Germany.,Department of Pediatric Neurology, Charité Universitätsmedizin Berlin, Berlin, Germany.,Center for Chronically Sick Children (Sozialpädiatrisches Zentrum, SPZ), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Ali Ghazanfar
- Department of Biotechnology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - Nadine Kraemer
- Institute of Cell Biology and Neurobiology, Charité Universitätsmedizin Berlin, Berlin, Germany.,Department of Pediatric Neurology, Charité Universitätsmedizin Berlin, Berlin, Germany.,Center for Chronically Sick Children (Sozialpädiatrisches Zentrum, SPZ), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Sami Zaqout
- Department of Basic Medical Sciences, College of Medicine, QU Health, Qatar University, Doha, Qatar.,Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha, Qatar
| | - Abdul Waheed
- Department of Biotechnology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - Mohsan Hanif
- Department of Biotechnology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - Sadia Mughal
- Department of Biotechnology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - Alessandro Prigione
- University Children's Hospital, Department of General Pediatrics, Heinrich-Heine-Universitat Dusseldorf, Düsseldorf, Germany
| | - Na Li
- Laboratory of Medical Systems Biology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Xiang Fang
- Laboratory of Medical Systems Biology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Hao Hu
- Laboratory of Medical Systems Biology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,School of Medicine, South China University of Technology, Guangzhou, China
| | - Angela M Kaindl
- Institute of Cell Biology and Neurobiology, Charité Universitätsmedizin Berlin, Berlin, Germany .,Department of Pediatric Neurology, Charité Universitätsmedizin Berlin, Berlin, Germany.,Center for Chronically Sick Children (Sozialpädiatrisches Zentrum, SPZ), Charité - Universitätsmedizin Berlin, Berlin, Germany
| |
Collapse
|
13
|
Wong SHD, Xu X, Chen X, Xin Y, Xu L, Lai CHN, Oh J, Wong WKR, Wang X, Han S, You W, Shuai X, Wong N, Tan Y, Duan L, Bian L. Manipulation of the Nanoscale Presentation of Integrin Ligand Produces Cancer Cells with Enhanced Stemness and Robust Tumorigenicity. NANO LETTERS 2021; 21:3225-3236. [PMID: 33764789 DOI: 10.1021/acs.nanolett.1c00501] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Developing strategies for efficient expansion of cancer stem-like cells (CSCs) in vitro will help investigate the mechanism underlying tumorigenesis and cancer recurrence. Herein, we report a dynamic culture substrate tethered with integrin ligand-bearing magnetic nanoparticles via a flexible polymeric linker to enable magnetic manipulation of the nanoscale ligand tether mobility. The cancer cells cultured on the substrate with high ligand tether mobility develop into large semispherical colonies with CSCs features, which can be abrogated by magnetically restricting the ligand tether mobility. Mechanistically, the substrate with high ligand tether mobility suppresses integrin-mediated mechanotransduction and histone-related methylation, thereby enhancing cancer cell stemness. The culture-derived high-stemness cells can generate tumors both locally and at the distant lung and uterus much more efficiently than the low-stemness cells. We believe that this magnetic nanoplatform provides a promising strategy for investigating the dynamic interaction between CSCs and the microenvironment and establishing a cost-effective tumor spheroid model.
Collapse
Affiliation(s)
- Siu Hong Dexter Wong
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, 999077, China
| | - Xiao Xu
- Department of Orthopedics, Shenzhen Intelligent Orthopaedics and Biomedical Innovation Platform, Guangdong Artificial Intelligence Biomedical Innovation Platform, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, 518035, China
| | - Xi Chen
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China
- Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen 518000, China
| | - Ying Xin
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China
- Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen 518000, China
| | - Limei Xu
- Department of Orthopedics, Shenzhen Intelligent Orthopaedics and Biomedical Innovation Platform, Guangdong Artificial Intelligence Biomedical Innovation Platform, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, 518035, China
| | - Chun Him Nathanael Lai
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, 999077, China
| | - Jiwon Oh
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, 999077, China
| | - Wai Ki Ricky Wong
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, 999077, China
| | - Xuemei Wang
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, 999077, China
| | - Shisong Han
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, 999077, China
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
- Laboratory of Interventional Radiology, Department of Minimally Invasive Interventional Radiology, and Department of Radiology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Wenxing You
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, 999077, China
- Department of Surgery at Sir Y. K. Pao Centre for Cancer, The Chinese University of Hong Kong, Hong Kong, 999077, China
| | - Xintao Shuai
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
- Laboratory of Interventional Radiology, Department of Minimally Invasive Interventional Radiology, and Department of Radiology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Nathalie Wong
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, 999077, China
- Department of Surgery at Sir Y. K. Pao Centre for Cancer, The Chinese University of Hong Kong, Hong Kong, 999077, China
| | - Youhua Tan
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China
- Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen 518000, China
| | - Li Duan
- Department of Orthopedics, Shenzhen Intelligent Orthopaedics and Biomedical Innovation Platform, Guangdong Artificial Intelligence Biomedical Innovation Platform, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, 518035, China
| | - Liming Bian
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, 999077, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, 518172, China
- China Orthopedic Regenerative Medicine Group (CORMed) Hangzhou, Zhejiang, 310058, China
| |
Collapse
|
14
|
Yang C, Zhang J, Wu T, Zhao K, Wu X, Shi J, Sun W, Kong X. Multi-Omics Analysis to Examine Gene Expression and Metabolites From Multisite Adipose-Derived Mesenchymal Stem Cells. Front Genet 2021; 12:627347. [PMID: 33679891 PMCID: PMC7930907 DOI: 10.3389/fgene.2021.627347] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 01/08/2021] [Indexed: 01/03/2023] Open
Abstract
This study aimed at exploring the gene expression and metabolites among multisite adipose-derived mesenchymal stem cells (ASCs) and investigate the metabolic pathway using a multi-omics analysis. Subcutaneous adipose-derived mesenchymal stem cells (SASCs), perirenal adipose-derived mesenchymal stem cells (PASCs), and epididymal adipose-derived mesenchymal stem cells (EASCs) were isolated from Sprague Dawley rats. RNA and metabolites were extracted and sequenced using transcriptomics and metabolomics analyses, respectively. There were 720 differentially expressed genes (DEGs) in EASCs and 688 DEGs in PASCs compared with SASCs; there were 166 unique DEGs in EASCs, 134 unique DEGs in PASCs, and 554 common DEGs between EASCs and PASCs. Furthermore, there were 226 differential metabolites in EASCs, 255 differential metabolites in PASCs, 83 unique differential metabolites in EASCs, 112 unique differential metabolites in PASCs, and 143 common differential metabolites between EASCs and PASCs. The transcriptomics and metabolomics analyses identified four hub genes, one in EASCs and three in PASCs. There are functional differences among multisite ASCs that may be related to the hub genes Atac2, Rrm1, Rrm2, and Gla. The relevant signaling pathways are the Ras signaling pathway, HIF-1 signaling pathway, and the p53 signaling pathway. In conclusion, compared with SASCs, our multi-omics analysis identified that EASCs with higher Acat2 expression may be more correlated to fat metabolism and insulin resistance, while PASCs with abnormal expression of Rrm1/2 and Gla may be more correlated with some malignant tumors and cardiac-cerebral vascular disease.
Collapse
Affiliation(s)
- Chuanxi Yang
- Department of Cardiology, Medical School of Southeast University, Nanjing, China
| | - Jing Zhang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Tingting Wu
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Kun Zhao
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaoguang Wu
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jing Shi
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wei Sun
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiangqing Kong
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| |
Collapse
|
15
|
Rapsomaniki MA, Maxouri S, Nathanailidou P, Garrastacho MR, Giakoumakis NN, Taraviras S, Lygeros J, Lygerou Z. In silico analysis of DNA re-replication across a complete genome reveals cell-to-cell heterogeneity and genome plasticity. NAR Genom Bioinform 2021; 3:lqaa112. [PMID: 33554116 PMCID: PMC7846089 DOI: 10.1093/nargab/lqaa112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/15/2020] [Accepted: 01/20/2021] [Indexed: 01/06/2023] Open
Abstract
DNA replication is a complex and remarkably robust process: despite its inherent uncertainty, manifested through stochastic replication timing at a single-cell level, multiple control mechanisms ensure its accurate and timely completion across a population. Disruptions in these mechanisms lead to DNA re-replication, closely connected to genomic instability and oncogenesis. Here, we present a stochastic hybrid model of DNA re-replication that accurately portrays the interplay between discrete dynamics, continuous dynamics and uncertainty. Using experimental data on the fission yeast genome, model simulations show how different regions respond to re-replication and permit insight into the key mechanisms affecting re-replication dynamics. Simulated and experimental population-level profiles exhibit a good correlation along the genome, robust to model parameters, validating our approach. At a single-cell level, copy numbers of individual loci are affected by intrinsic properties of each locus, in cis effects from adjoining loci and in trans effects from distant loci. In silico analysis and single-cell imaging reveal that cell-to-cell heterogeneity is inherent in re-replication and can lead to genome plasticity and a plethora of genotypic variations.
Collapse
Affiliation(s)
- Maria Anna Rapsomaniki
- Department of Biology, School of Medicine, University of Patras, 26500 Rio Patras, Greece
| | - Stella Maxouri
- Department of Biology, School of Medicine, University of Patras, 26500 Rio Patras, Greece
| | - Patroula Nathanailidou
- Department of Biology, School of Medicine, University of Patras, 26500 Rio Patras, Greece
| | | | | | - Stavros Taraviras
- Department of Physiology, School of Medicine, University of Patras, 26500 Rio Patras, Greece
| | - John Lygeros
- Automatic Control Laboratory, ETH Zurich, 8092 Zurich, Switzerland
| | - Zoi Lygerou
- Department of Biology, School of Medicine, University of Patras, 26500 Rio Patras, Greece
| |
Collapse
|
16
|
Ding Z, Xiang X, Li J, Wu S. Long-term 1800MHz electromagnetic radiation did not induce Balb/c-3T3 cells malignant transformation. Electromagn Biol Med 2021; 40:169-178. [PMID: 33211539 DOI: 10.1080/15368378.2020.1846194] [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: 07/28/2020] [Accepted: 11/01/2020] [Indexed: 10/23/2022]
Abstract
There is an increased public concern about potential health hazards of exposure to electromagnetic radiation (EMR). To declare the carcinogenic effects of 1800 MHz EMR. In this study, Balb/c-3T3 cells were exposed to 1800 MHz EMR for 80 days. The cells were harvested for cell proliferation detection, cell cycle assay, plate clone, and soft agar formation assay, transwell assay, and mRNA microarray detection. 1800 MHz EMR promoted Balb/c-3T3 proliferation. No clones were observed in both plate clone and soft agar clone formation assay. The percentage of cells in S phase in Balb/c-3T3 cells of 80d Expo was obviously higher than the percetage in 80d Sham cells. 80d Expo Balb/c-3T3 cells had stronger migration ability than Sham cells. The mRNA microarray results indicated that cell cycle, cell division, and DNA replication were the main biological processes the significant genes enriched, with higher expression of RPs and Mcms. 1800 MHz EMR promoted Balb/c-3T3 cells proliferation and migration. The mRNA microarray results indicated that cell cycle, cell division, and DNA replication were the main biological processes the significant genes enriched.
Collapse
Affiliation(s)
- Zhen Ding
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College , Shenzhen, China
| | - Xiaoyong Xiang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College , Shenzhen, China
| | - Jintao Li
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bio-Engineering, Beijing University of Technology , Beijing, China
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention , Beijing, China
| | - Shuicai Wu
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bio-Engineering, Beijing University of Technology , Beijing, China
| |
Collapse
|
17
|
Zhu B, Wu Y, Luo J, Zhang Q, Huang J, Li Q, Xu L, Lu E, Ren B. MNX1 Promotes Malignant Progression of Cervical Cancer via Repressing the Transcription of p21 cip1. Front Oncol 2020; 10:1307. [PMID: 32850410 PMCID: PMC7431913 DOI: 10.3389/fonc.2020.01307] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 06/23/2020] [Indexed: 01/08/2023] Open
Abstract
Motor neuron and pancreas homeobox 1 (MNX1) is a development-related genes and has been found to be highly expressed in several cancers. However, its biological function in cervical cancer remains largely unexplored. QRT-PCR, western blot, and IHC showed that MNX1 was abnormally overexpressed in cervical cancer tissues and cell lines. The high expression level of MNX1 correlated with poorer clinicopathologic characteristics in cervical cancer patients. Evaluated by RTCA (Real Time Cellular Analysis) proliferation assay, colony formation assay, EdU assay, transwell assay, and matrigel assay, we found that knockdown of MNX1 inhibited proliferation, migration and invasion of cervical cancer in vitro, while overexpression of MNX1 promoted malignant phenotype of cervical cancer. And subcutaneous xenograft model confirmed the malignant phenotype of MNX1 in vivo. Furthermore, flow cytometry, chromatin immunoprecipitation, and luciferase reporter assay indicated that MNX1 accelerated cell cycle transition by transcriptionally downregulating cyclin-dependent kinases p21cip1. In summary, our study revealed that MNX1 exerted an oncogenic role in cervical cancer via repressing the transcription of p21cip1 and thus accelerating cell cycle progression. Our results suggested that MNX1 was a potential diagnostic marker and therapeutic target for cervical cancer patients.
Collapse
Affiliation(s)
- Biqing Zhu
- Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, China
| | - Yaqin Wu
- Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, China
| | - Jing Luo
- Department of Cardiothoracic Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Quanli Zhang
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing, China
| | - Jian Huang
- Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, China
| | - Qian Li
- Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, China
| | - Lin Xu
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing, China.,Department of Thoracic Surgery, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, China
| | - Emei Lu
- Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, China
| | - Binhui Ren
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing, China.,Department of Thoracic Surgery, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, China
| |
Collapse
|
18
|
Maintenance of genome integrity and active homologous recombination in embryonic stem cells. Exp Mol Med 2020; 52:1220-1229. [PMID: 32770082 PMCID: PMC8080833 DOI: 10.1038/s12276-020-0481-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 06/12/2020] [Accepted: 06/23/2020] [Indexed: 12/11/2022] Open
Abstract
Embryonic stem cells (ESCs) possess specific gene expression patterns that confer the ability to proliferate indefinitely and enable pluripotency, which allows ESCs to differentiate into diverse cell types in response to developmental signals. Compared to differentiated cells, ESCs harbor an elevated level of homologous recombination (HR)-related proteins and exhibit exceptional cell cycle control, characterized by a high proliferation rate and a prolonged S phase. HR is involved in several aspects of chromosome maintenance. For instance, HR repairs impaired chromosomes and prevents the collapse of DNA replication forks during cell proliferation. Thus, HR is essential for the maintenance of genomic integrity and prevents cellular dysregulation and lethal events. In addition, abundant HR proteins in the prolonged S phase can efficiently protect ESCs from external damages and protect against genomic instability caused by DNA breaks, facilitating rapid and accurate DNA break repair following chromosome duplication. The maintenance of genome integrity is key to preserving the functions of ESCs and reducing the risks of cancer development, cell cycle arrest, and abnormal replication. Here, we review the fundamental links between the stem cell-specific HR process and DNA damage response as well as the different strategies employed by ESCs to maintain genomic integrity. Embryonic stem cells (ESCs), which give rise to the many specialized cells of the body, have highly effective molecular processes of DNA maintenance and repair which protect their genetic information from damage. Keun Pil Kim and colleagues at Chung-Ang University, Seoul, South Korea, review the strategies found in ESCs to maintain the integrity of their DNA as they develop and multiply. A key feature is the process of homologous recombination (HR) in which one copy of a section of DNA acts as the template allowing a damaged version of the DNA to be repaired. HR also facilitates swapping of sections of DNA when sperm and egg cells form, promoting genetic diversity. HR appears to be especially significant in maintaining ESC DNA as ESCs possess higher levels of key proteins involved in its maintenance and regulation.
Collapse
|
19
|
Transcriptome Analysis Reveals the Negative Effect of 16 T High Static Magnetic Field on Osteoclastogenesis of RAW264.7 Cells. BIOMED RESEARCH INTERNATIONAL 2020; 2020:5762932. [PMID: 32309435 PMCID: PMC7140147 DOI: 10.1155/2020/5762932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 03/03/2020] [Indexed: 01/05/2023]
Abstract
The magnetic field is the most common element in the universe, and high static magnetic field (HiSMF) has been reported to act as an inhibited factor for osteoclasts differentiation. Although many studies have indicated the negative role of HiSMF on osteoclastogenesis of RANKL-induced RAW264.7 cells, the molecular mechanism is still elusive. In this study, the HiSMF-retarded cycle and weakened differentiation of RAW264.7 cells was identified. Through RNA-seq analysis, RANKL-induced RAW264.7 cells under HiSMF were analysed, and a total number of 197 differentially expressed genes (DEGs) were discovered. Gene ontology (GO) enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis indicated that regulators of cell cycle and cell division such as Bub1b, Rbl1, Ube2c, Kif11, and Nusap1 were highly expressed, and CtsK, the marker gene of osteoclastogenesis was downregulated in HiSMF group. In addition, pathways related to DNA replication, cell cycle, and metabolic pathways were significantly inhibited in the HiSMF group compared to the Control group. Collectively, this study describes the negative changes occurring throughout osteoclastogenesis under 16 T HiSMF treatment from the morphological and molecular perspectives. Our study provides information that may be utilized in improving magnetotherapy on bone disease.
Collapse
|
20
|
Panagopoulos A, Taraviras S, Nishitani H, Lygerou Z. CRL4Cdt2: Coupling Genome Stability to Ubiquitination. Trends Cell Biol 2020; 30:290-302. [DOI: 10.1016/j.tcb.2020.01.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/12/2020] [Accepted: 01/14/2020] [Indexed: 12/20/2022]
|
21
|
Champeris Tsaniras S, Delinasios GJ, Petropoulos M, Panagopoulos A, Anagnostopoulos AK, Villiou M, Vlachakis D, Bravou V, Stathopoulos GT, Taraviras S. DNA Replication Inhibitor Geminin and Retinoic Acid Signaling Participate in Complex Interactions Associated With Pluripotency. Cancer Genomics Proteomics 2019; 16:593-601. [PMID: 31659113 PMCID: PMC6885373 DOI: 10.21873/cgp.20162] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 09/23/2019] [Accepted: 10/10/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND/AIM Several links between DNA replication, pluripotency and development have been recently identified. The involvement of miRNA in the regulation of cell cycle events and pluripotency factors has also gained attention. MATERIALS AND METHODS In the present study, we used the g:Profiler platform to analyze transcription factor binding sites, miRNA networks and protein-protein interactions to identify novel links among the aforementioned processes. RESULTS AND CONCLUSION A complex circuitry between retinoic acid signaling, SWI/SNF components, pluripotency factors including Oct4, Sox2 and Nanog and cell cycle regulators was identified. It is suggested that the DNA replication inhibitor geminin plays a central role in this circuitry.
Collapse
Affiliation(s)
- Spyridon Champeris Tsaniras
- Department of Physiology, Medical School, University of Patras, Patras, Greece
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, U.S.A
| | | | | | | | - Athanasios K Anagnostopoulos
- International Institute of Anticancer Research, Kapandriti, Greece
- Proteomics Research Unit, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Maria Villiou
- Department of Physiology, Medical School, University of Patras, Patras, Greece
| | - Dimitrios Vlachakis
- Bioinformatics & Medical Informatics Laboratory, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Vasiliki Bravou
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of Patras, Patras, Greece
| | - Georgios T Stathopoulos
- Laboratory for Molecular Respiratory Carcinogenesis, Department of Physiology, Faculty of Medicine, University of Patras, Patras, Greece
| | - Stavros Taraviras
- Department of Physiology, Medical School, University of Patras, Patras, Greece
| |
Collapse
|
22
|
Down-regulation of CK2α correlates with decreased expression levels of DNA replication minichromosome maintenance protein complex (MCM) genes. Sci Rep 2019; 9:14581. [PMID: 31601942 PMCID: PMC6787000 DOI: 10.1038/s41598-019-51056-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 06/12/2019] [Indexed: 11/12/2022] Open
Abstract
Protein kinase CK2 is a serine/threonine kinase composed of two catalytic subunits (CK2α and/or CK2α’) and two regulatory subunits (CK2β). It is implicated in every stage of the cell cycle and in the regulation of various intracellular pathways associated with health and disease states. The catalytic subunits have similar biochemical activity, however, their functions may differ significantly in cells and in vivo. In this regard, homozygous deletion of CK2α leads to embryonic lethality in mid-gestation potentially due to severely impaired cell proliferation. To determine the CK2α-dependent molecular mechanisms that control cell proliferation, we established a myoblast-derived cell line with inducible silencing of CK2α and carried out a comprehensive RNA-Seq analysis of gene expression. We report evidence that CK2α depletion causes delayed cell cycle progression through the S-phase and defective response to replication stress. Differential gene expression analysis revealed that the down-regulated genes were enriched in pathways implicated in cell cycle regulation, DNA replication and DNA damage repair. Interestingly, the genes coding for the minichromosome maintenance proteins (MCMs), which constitute the core of the replication origin recognition complex, were among the most significantly down-regulated genes. These findings were validated in cells and whole mouse embryos. Taken together, our study provides new evidence for a critical role of protein kinase CK2 in controlling DNA replication initiation and the expression levels of replicative DNA helicases, which ensure maintenance of proliferative potential and genome integrity in eukaryotic cells.
Collapse
|
23
|
Wang X, Yu H, Fang H, Zhao Y, Jin Y, Shen J, Zhou C, Zhou Y, Fu Y, Wang J, Zhang J. Transcriptional profiling of zearalenone-induced inhibition of IPEC-J2 cell proliferation. Toxicon 2019; 172:8-14. [DOI: 10.1016/j.toxicon.2019.10.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 09/30/2019] [Accepted: 10/09/2019] [Indexed: 01/09/2023]
|
24
|
Choi EH, Kim KP. E2F1 facilitates DNA break repair by localizing to break sites and enhancing the expression of homologous recombination factors. Exp Mol Med 2019; 51:1-12. [PMID: 31534120 PMCID: PMC6802646 DOI: 10.1038/s12276-019-0307-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 06/16/2019] [Accepted: 07/04/2019] [Indexed: 12/14/2022] Open
Abstract
The human genome is constantly exposed to both endogenous and exogenous stresses, which can lead to errors in DNA replication and the accumulation of DNA mutations, thereby increasing the risk of cancer development. The transcription factor E2F1 is a key regulator of DNA repair. E2F1 also has defined roles in the replication of many cell cycle-related genes and is highly expressed in cancer cells, and its abundance is strongly associated with poor prognosis in cancers. Studies on colon cancer have demonstrated that the depletion of E2F1 leads to reduced levels of homologous recombination (HR), resulting in interrupted DNA replication and the subsequent accumulation of DNA lesions. Our results demonstrate that the depletion of E2F1 also causes reduced RAD51-mediated DNA repair and diminished cell viability resulting from DNA damage. Furthermore, the extent of RAD51 and RPA colocalization is reduced in response to DNA damage; however, RPA single-stranded DNA (ssDNA) nucleofilament formation is not affected following the depletion of E2F1, implying that ssDNA gaps accumulate when RAD51-mediated DNA gap filling or repair is diminished. Surprisingly, we also demonstrate that E2F1 forms foci with RAD51 or RPA at DNA break sites on damaged DNA. These findings provide evidence of a molecular mechanism underlying the E2F1-mediated regulation of HR activity and predict a fundamental shift in the function of E2F1 from regulating cell division to accelerating tumor development.
Collapse
Affiliation(s)
- Eui-Hwan Choi
- Department of Life Sciences, Chung-Ang University, Seoul, 06974, South Korea
| | - Keun Pil Kim
- Department of Life Sciences, Chung-Ang University, Seoul, 06974, South Korea.
| |
Collapse
|
25
|
Luo J, Liu K, Yao Y, Sun Q, Zheng X, Zhu B, Zhang Q, Xu L, Shen Y, Ren B. DMBX1 promotes tumor proliferation and regulates cell cycle progression via repressing OTX2-mediated transcription of p21 in lung adenocarcinoma cell. Cancer Lett 2019; 453:45-56. [DOI: 10.1016/j.canlet.2019.03.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 03/21/2019] [Accepted: 03/22/2019] [Indexed: 12/17/2022]
|
26
|
Zhou X, Ouyang S, Li J, Huang X, Ai X, Zeng Y, Lv Y, Cai M. The novel non-immunological role and underlying mechanisms of B7-H3 in tumorigenesis. J Cell Physiol 2019; 234:21785-21795. [PMID: 31222741 DOI: 10.1002/jcp.28936] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/23/2019] [Accepted: 05/24/2019] [Indexed: 12/12/2022]
Abstract
B7 homolog 3 (B7-H3) has been proven to be involved in tumorigenesis. An elucidation of its role and underlying mechanisms is essential to an understanding of tumorigenesis and the development of effective clinical applications. B7-H3 is abnormally overexpressed in many types of cancer and is generally associated with a poor clinical prognosis. B7-H3 inhibits the initiation of the "caspase cascade" by the Janus kinase/signal transducers and activators of transcription pathway to resist tumor cell apoptosis. B7-H3 accelerates malignant proliferation by attacking the checkpoint mechanism of the tumor cell cycle through the phosphatidylinositol 3-kinase and protein kinase B pathway. B7-H3 reprograms the metabolism of glucose and lipids and transforms the metabolic flux of tumor cells to promote tumorigenesis. B7-H3 induces abnormal angiogenesis by recruiting vascular endothelial growth factor and matrix metalloproteinase to tumor lesions. B7-H3 strongly promotes tumorigenesis through antiapoptotic, pro-proliferation, metabolism reprogramming, and pro-angiogenesis.
Collapse
Affiliation(s)
- Xiangqi Zhou
- Department of Radiotherapy of the First Affiliated Hospital, University of South China, Hengyang, China.,Clinical Anatomy & Reproductive Medicine Application Institute, University of South China, Hengyang, China
| | - Shuhui Ouyang
- Clinical Anatomy & Reproductive Medicine Application Institute, University of South China, Hengyang, China
| | - Jianjun Li
- Department of Urology of the Second Affiliated Hospital, University of South China, Hengyang, China
| | - Xin Huang
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.,Division of Gynecological Oncology, Magee-Womens Research Institute, Pittsburgh, Pennsylvania
| | - Xiaohong Ai
- Department of Radiotherapy of the First Affiliated Hospital, University of South China, Hengyang, China
| | - Yixin Zeng
- Department of Experimental Research, Sun Yat-Sen University Cancer Center, China
| | - Yuncheng Lv
- Clinical Anatomy & Reproductive Medicine Application Institute, University of South China, Hengyang, China
| | - Manbo Cai
- Department of Radiotherapy of the First Affiliated Hospital, University of South China, Hengyang, China
| |
Collapse
|
27
|
Petropoulos M, Champeris Tsaniras S, Taraviras S, Lygerou Z. Replication Licensing Aberrations, Replication Stress, and Genomic Instability. Trends Biochem Sci 2019; 44:752-764. [PMID: 31054805 DOI: 10.1016/j.tibs.2019.03.011] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/24/2019] [Accepted: 03/27/2019] [Indexed: 01/07/2023]
Abstract
Strict regulation of DNA replication is of fundamental significance for the maintenance of genome stability. Licensing of origins of DNA replication is a critical event for timely genome duplication. Errors in replication licensing control lead to genomic instability across evolution. Here, we present accumulating evidence that aberrant replication licensing is linked to oncogene-induced replication stress and poses a major threat to genome stability, promoting tumorigenesis. Oncogene activation can lead to defects in where along the genome and when during the cell cycle licensing takes place, resulting in replication stress. We also discuss the potential of replication licensing as a specific target for novel anticancer therapies.
Collapse
Affiliation(s)
- Michalis Petropoulos
- Department of Biology, School of Medicine, University of Patras, Patras 26504, Greece
| | | | - Stavros Taraviras
- Department of Physiology, School of Medicine, University of Patras, Patras 26504, Greece.
| | - Zoi Lygerou
- Department of Biology, School of Medicine, University of Patras, Patras 26504, Greece.
| |
Collapse
|
28
|
Kalogeropoulou A, Lygerou Z, Taraviras S. Cortical Development and Brain Malformations: Insights From the Differential Regulation of Early Events of DNA Replication. Front Cell Dev Biol 2019; 7:29. [PMID: 30915332 PMCID: PMC6421272 DOI: 10.3389/fcell.2019.00029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 02/20/2019] [Indexed: 12/27/2022] Open
Abstract
During the development of the cortex distinct populations of Neural Stem Cells (NSCs) are defined by differences in their cell cycle duration, self-renewal capacity and transcriptional profile. A key difference across the distinct populations of NSCs is the length of G1 phase, where the licensing of the DNA replication origins takes place by the assembly of a pre-replicative complex. Licensing of DNA replication is a process that is adapted accordingly to the cell cycle length of NSCs to secure the timed duplication of the genome. Moreover, DNA replication should be efficiently coordinated with ongoing transcription for the prevention of conflicts that would impede the progression of both processes, compromising the normal course of development. In the present review we discuss how the differential regulation of the licensing and initiation of DNA replication in different cortical NSCs populations is integrated with the properties of these stem cells populations. Moreover, we examine the implication of the initial steps of DNA replication in the pathogenetic mechanisms of neurodevelopmental defects and Zika virus-related microcephaly, highlighting the significance of the differential regulation of DNA replication during brain development.
Collapse
Affiliation(s)
| | - Zoi Lygerou
- Department of General Biology, Medical School, University of Patras, Patras, Greece
| | - Stavros Taraviras
- Department of Physiology, Medical School, University of Patras, Patras, Greece
| |
Collapse
|
29
|
Wei W, Lv Y, Gan Z, Zhang Y, Han X, Xu Z. Identification of key genes involved in the metastasis of clear cell renal cell carcinoma. Oncol Lett 2019; 17:4321-4328. [PMID: 30988807 PMCID: PMC6447949 DOI: 10.3892/ol.2019.10130] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 02/01/2019] [Indexed: 12/12/2022] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is the most common and lethal renal malignant tumor in adults. The aim of the present study was to identify the key genes involved in ccRCC metastasis. Expression profiling data for ccRCC patients with metastasis and without metastasis were obtained from The Cancer Genome Atlas database. The datasets were used to identify differentially expressed genes (DEGs) between the metastasis group and the non-metastasis group using the DESeq2 package. Function enrichment analyses of DEGs were performed. The protein-protein interaction (PPI) network was constructed and analyzed using the Search Tool for the Retrieval of Interacting Genes and Cytoscape for further analysis of the identified hub genes. A total of 472 DEGs were identified, including 247 that were upregulated and 225 that were downregulated in the metastasis group. Gene Ontology enrichment analysis revealed that DEGs were mainly enriched in cell transmembrane movement and mitotic cell cycle process. Kyoto Encyclopedia of Genes Genomes pathway analysis revealed that the DEGs were mainly involved in the ‘cell cycle’ (hsa04110), ‘collecting duct acid secretion’ (hsa04966), ‘complement and coagulation cascades’ (hsa04610) and ‘aldosterone-regulated sodium reabsorption’ (hsa04960) pathways. Using the PPI network, 35 hub genes were identified, and the majority of them were upregulated in ccRCC tissue compared with normal kidney tissue. The expression levels of certain hub genes (CDKN3, TPX2, BUB1B, CDCA8, UBE2C, NDC80, RRM2, NCAPG, NCAPH, PTTG1, FAM64A, ANLN, KIF4A, CEP55, CENPF, KIF20A, ASPM and HJURP) were significantly associated with overall survival and recurrence-free survival in ccRCC. The present study has identified key genes associated with the metastasis of ccRCC.
Collapse
Affiliation(s)
- Wenhao Wei
- Department of Medical Oncology, Affiliated Langdong Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Yufeng Lv
- Department of Medical Oncology, Affiliated Langdong Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Zuhuan Gan
- Department of Medical Oncology, Affiliated Langdong Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Yanxian Zhang
- Department of Medical Oncology, Affiliated Langdong Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Xueqiong Han
- Department of Medical Oncology, The First People's Hospital of Nanning, Nanning, Guangxi Zhuang Autonomous Region 530022, P.R. China
| | - Zihai Xu
- Department of Medical Oncology, Affiliated Langdong Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| |
Collapse
|
30
|
Shi X, Chen S, Zhang Y, Xie W, Hu Z, Li H, Li J, Zhou Z, Tan W. Norcantharidin inhibits the DDR of bladder cancer stem-like cells through cdc6 degradation. Onco Targets Ther 2019; 12:4403-4413. [PMID: 31239709 PMCID: PMC6560209 DOI: 10.2147/ott.s209907] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 05/14/2019] [Indexed: 01/16/2023] Open
Abstract
Introduction: Cancer stem cells (CSCs) are the main source of tumor resistance and recurrence. At present, the main treatment for patients with advanced or metastatic bladder cancer (BCa) is cisplatin-based combination chemotherapy. However, CSCs are not sensitive to DNA-damaging drugs due to their enhanced DNA damage response (DDR) activity. Materials and methods: Bladder cancer stem cell-like cells (BCSLCs) were obtained by treating UMUC3 cells with cisplatin. The characteristics of the BCSLCs were identified by qPCR, flow cytometry, scratch wound-healing assays, transwell assays, tumorigenic ability experiments, Edu assays and Western blot assays in vivo. After BCSLCs were treated with norcantharidin (NCTD), the expression of Cdc6 and activation of the ATR-Chk1 pathway were detected by Western blotting. A subcutaneous tumor model in nude mice was successfully established to assess the anti-tumor efficacy of NCTD and cisplatin either alone or in combination in vivo. The tumor tissues were detected by immunohistochemistry. Results: The derived BCSLCs showed higher expression of stemness markers, increased invasiveness, improved resistance to multiple chemotherapeutics, and higher tumorigenic capacity in vivo. The protein expression level of chromatin-binding Cdc6 was increased in BCSLCs; however, NCTD decreased the level of chromatin-binding Cdc6 and inhibited the activation of the ATR-Chk1 pathway, which ultimately led to reduction in DDR activity in BCSLCs. NCTD enhanced the killing effect of cisplatin on BCSLCs in vitro and vivo. NCTD combined with cisplatin enhanced cisplatin-induced DNA damage in BCSLCs. Conclusion: Long-term cisplatin treatment can enrich BCSLCs. However, NCTD enhanced the killing effect of cisplatin on BCSLCs in vitro and vivo. The mechanism is inhibiting the DDR activity by reducing the expression of chromatin-binding Cdc6.
Collapse
Affiliation(s)
- Xianghua Shi
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
- Department of Health Management, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
| | - Sansan Chen
- Department of Urology, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, Guangdong, People’s Republic of China
| | - Yongjun Zhang
- Institute of Biotherapy, School of Biotechnology, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
| | - Weiwei Xie
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
| | - Zhiming Hu
- Institute of Biotherapy, School of Biotechnology, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
| | - Hongwei Li
- Institute of Biotherapy, School of Biotechnology, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
| | - Jinlong Li
- Institute of Biotherapy, School of Biotechnology, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
| | - Zhongxin Zhou
- Department of Vascular Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
- Zhongxin ZhouDepartment of Vascular Surgery, The Third Affiliated Hospital of Southern Medical University, No. 183, Zhongshan Avenue West, Guangzhou, Guangdong510630, People’s Republic of ChinaTel +861 852 037 6040Email
| | - Wanlong Tan
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
- Correspondence: Wanlong TanDepartment of Urology, Nanfang Hospital, Southern Medical University, No. 1838, Guangzhou Avenue North, Guangzhou, Guangdong510515, People’s Republic of ChinaTel +861 360 298 3938Email
| |
Collapse
|
31
|
Majerska J, Feretzaki M, Glousker G, Lingner J. Transformation-induced stress at telomeres is counteracted through changes in the telomeric proteome including SAMHD1. Life Sci Alliance 2018; 1:e201800121. [PMID: 30456372 PMCID: PMC6238619 DOI: 10.26508/lsa.201800121] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 07/04/2018] [Accepted: 07/05/2018] [Indexed: 12/13/2022] Open
Abstract
The authors apply telomeric chromatin analysis to identify factors that accumulate at telomeres during cellular transformation, promoting telomere replication and repair and counteracting oncogene-borne telomere replication stress. Telomeres play crucial roles during tumorigenesis, inducing cellular senescence upon telomere shortening and extensive chromosome instability during telomere crisis. However, it has not been investigated if and how cellular transformation and oncogenic stress alter telomeric chromatin composition and function. Here, we transform human fibroblasts by consecutive transduction with vectors expressing hTERT, the SV40 early region, and activated H-RasV12. Pairwise comparisons of the telomeric proteome during different stages of transformation reveal up-regulation of proteins involved in chromatin remodeling, DNA repair, and replication at chromosome ends. Depletion of several of these proteins induces telomere fragility, indicating their roles in replication of telomeric DNA. Depletion of SAMHD1, which has reported roles in DNA resection and homology-directed repair, leads to telomere breakage events in cells deprived of the shelterin component TRF1. Thus, our analysis identifies factors, which accumulate at telomeres during cellular transformation to promote telomere replication and repair, resisting oncogene-borne telomere replication stress.
Collapse
Affiliation(s)
- Jana Majerska
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Swiss Institute for Experimental Cancer Research, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Marianna Feretzaki
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Swiss Institute for Experimental Cancer Research, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Galina Glousker
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Swiss Institute for Experimental Cancer Research, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Joachim Lingner
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Swiss Institute for Experimental Cancer Research, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| |
Collapse
|
32
|
Kostaropoulos T, Papageorgiou L, Champeris Tsaniras S, Vlachakis D, Eliopoulos E. Carcinogenic Pesticide Control via Hijacking Endosymbiosis; The Paradigm of DSB-A from Wolbachia pipientis for the Management of Otiorhynchus singularis. In Vivo 2018; 32:1051-1062. [PMID: 30150426 PMCID: PMC6199590 DOI: 10.21873/invivo.11346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 05/16/2018] [Accepted: 05/17/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND/AIM Pesticides have little, if any specificity, to the pathogen they target in most cases. Wide spectrum toxic chemicals are being used to remove pestcides and salvage crops and economies linked to agriculture. The burden on the environment, public health and economy is huge. Traditional pestcide control is based on administering heavy loads of highly toxic compounds and elements that essentially strip all life from the field. Those chemicals are a leading cause of increased cancer related deaths in countryside. Herein, the Trojan horse of endosymbiosis was used, in an effort to control pests using high specificity compounds in reduced quantities. MATERIALS AND METHODS Our pipeline has been applied on the case of Otiorhynchus singularis, which is a very widespread pest, whose impact is devastating on a repertoire of crops. To date, there is no specific pesticide nor agent to control it. The deployed strategy involves the inhibition of the key DSB-A enzyme of its endosymbiotic Wolbachia pipientis bacterial strain. RESULTS Our methodology, provides the means to design, test and identify highly specific pestcide control substances that minimize the impact of toxic chemicals on health, economy and the environment. CONCLUSION All in all, in this study a radical computer-based pipeline is proposed that could be adopted under many other similar scenarios and pave the way for precision agriculture via optimized pest control.
Collapse
Affiliation(s)
- Thomas Kostaropoulos
- Genetics Laboratory, Department of Biotechnology, Agricultural University of Athens, Athens, Greece
| | - Louis Papageorgiou
- Genetics Laboratory, Department of Biotechnology, Agricultural University of Athens, Athens, Greece
| | | | - Dimitrios Vlachakis
- Genetics Laboratory, Department of Biotechnology, Agricultural University of Athens, Athens, Greece
- Faculty of Natural & Mathematical Sciences, King's College London, London, U.K
| | - Elias Eliopoulos
- Genetics Laboratory, Department of Biotechnology, Agricultural University of Athens, Athens, Greece
| |
Collapse
|
33
|
Champeris Tsaniras S, Villiou M, Giannou AD, Nikou S, Petropoulos M, Pateras IS, Tserou P, Karousi F, Lalioti ME, Gorgoulis VG, Patmanidi AL, Stathopoulos GT, Bravou V, Lygerou Z, Taraviras S. Geminin ablation in vivo enhances tumorigenesis through increased genomic instability. J Pathol 2018; 246:134-140. [PMID: 29952003 DOI: 10.1002/path.5128] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 05/29/2018] [Accepted: 06/01/2018] [Indexed: 11/09/2022]
Abstract
Geminin, a DNA replication licensing inhibitor, ensures faithful DNA replication in vertebrates. Several studies have shown that geminin depletion in vitro results in rereplication and DNA damage, whereas increased expression of geminin has been observed in human cancers. However, conditional inactivation of geminin during embryogenesis has not revealed any detectable DNA replication defects. In order to examine its role in vivo, we conditionally inactivated geminin in the murine colon and lung, and assessed chemically induced carcinogenesis. We show here that mice lacking geminin develop a significantly higher number of tumors and bear a larger tumor burden than sham-treated controls in urethane-induced lung and azoxymethane/dextran sodium sulfate-induced colon carcinogenesis. Survival is also significantly reduced in mice lacking geminin during lung carcinogenesis. A significant increase in the total number and grade of lesions (hyperplasias, adenomas, and carcinomas) was also confirmed by hematoxylin and eosin staining. Moreover, increased genomic aberrations, identified by increased ATR and γH2AX expression, was detected with immunohistochemistry analysis. In addition, we analyzed geminin expression in human colon cancer, and found increased expression, as well as a positive correlation with ATM/ATR levels and a non-monotonic association with γH2AX. Taken together, our data demonstrate that geminin acts as a tumor suppressor by safeguarding genome stability, whereas its overexpression is also associated with genomic instability. Copyright © 2018 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
| | - Maria Villiou
- Department of Physiology, Medical School, University of Patras, Patras, Greece
| | - Anastassios D Giannou
- Laboratory for Molecular Respiratory Carcinogenesis, Department of Physiology, Faculty of Medicine, University of Patras, Patras, Greece
| | - Sofia Nikou
- Department of Anatomy-Histology-Embryology, School of Medicine, University of Patras, Patras, Greece
| | | | - Ioannis S Pateras
- Department of Histology and Embryology, School of Medicine, National Kapodistrian University of Athens, Athens, Greece
| | - Paraskevi Tserou
- Department of Physiology, Medical School, University of Patras, Patras, Greece
| | - Foteini Karousi
- Department of Physiology, Medical School, University of Patras, Patras, Greece
| | - Maria-Eleni Lalioti
- Department of Physiology, Medical School, University of Patras, Patras, Greece
| | - Vassilis G Gorgoulis
- Department of Histology and Embryology, School of Medicine, National Kapodistrian University of Athens, Athens, Greece.,Biomedical Research Foundation of the Academy of Athens, Athens, Greece.,Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | | | - Georgios T Stathopoulos
- Laboratory for Molecular Respiratory Carcinogenesis, Department of Physiology, Faculty of Medicine, University of Patras, Patras, Greece
| | - Vasiliki Bravou
- Department of Anatomy-Histology-Embryology, School of Medicine, University of Patras, Patras, Greece
| | - Zoi Lygerou
- Department of Biology, Medical School, University of Patras, Patras, Greece
| | - Stavros Taraviras
- Department of Physiology, Medical School, University of Patras, Patras, Greece
| |
Collapse
|
34
|
Liao X, Wang X, Huang K, Yang C, Yu T, Han C, Zhu G, Su H, Huang R, Peng T. Genome-scale analysis to identify prognostic microRNA biomarkers in patients with early stage pancreatic ductal adenocarcinoma after pancreaticoduodenectomy. Cancer Manag Res 2018; 10:2537-2551. [PMID: 30127641 PMCID: PMC6089101 DOI: 10.2147/cmar.s168351] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background The aim of the study was to investigate potential prognostic microRNA (miRNA) biomarkers for patients with early stage pancreatic ductal adenocarcinoma (PDAC) after pancreaticoduodenectomy using a miRNA-sequencing (miRNA-seq) data set from The Cancer Genome Atlas (TCGA). A miRNA expression-based prognostic signature was generated, and the potential role of target genes in overall survival (OS) in patients with PDAC was examined. Methods A miRNA-seq data set of 112 PDAC patients who underwent pancreaticoduodenectomy was obtained from TCGA. Survival analysis was performed to identify potential prognostic biomarkers. Results Eleven miRNAs (hsa-mir-501, hsa-mir-4521, hsa-mir-5091, hsa-mir-24-1, hsa-mir-126, hsa-mir-30e, hsa-mir-3157, hsa-let-7a-3, hsa-mir-133a-1, hsa-mir-4709, and hsa-mir-421) were used to construct a prognostic signature using the step function. The 11-miRNA prognostic signature showed good performance for prognosis prediction (adjusted P<0.0001, adjusted hazard ratio =4.285, 95% confidence interval =2.146–8.554), and the time-dependent receiver operating characteristic analysis showed an area under the curve of 0.864, 0.877, and 0.787 for 1-, 2-, and 3-year PDAC OS predictions, respectively. Comprehensive survival analysis suggested that the prognostic signature could serve as an independent prognostic factor for PDAC OS and performs better in prognosis prediction than other traditional clinical indicators. Functional assessment of the target genes of the miRNAs indicated that they were significantly enriched in multiple biological processes and pathways, including cell proliferation, cell cycle biological processes, the forkhead box O, mitogen-activated protein kinase, Janus kinase/signal transducers and activators of transcription signaling pathways, pathways in cancer, and the ErbB signaling pathway. Several target genes of these miRNAs were also associated with PDAC OS. Conclusion The present study identified a novel miRNA expression signature that showed potential as a prognostic biomarker for PDAC after pancreaticoduodenectomy.
Collapse
Affiliation(s)
- Xiwen Liao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, People's Republic of China,
| | - Xiangkun Wang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, People's Republic of China,
| | - Ketuan Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, People's Republic of China,
| | - Chengkun Yang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, People's Republic of China,
| | - Tingdong Yu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, People's Republic of China,
| | - Chuangye Han
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, People's Republic of China,
| | - Guangzhi Zhu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, People's Republic of China,
| | - Hao Su
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, People's Republic of China,
| | - Rui Huang
- Department of Hematology, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Tao Peng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, People's Republic of China,
| |
Collapse
|
35
|
A P, Xu X, Wang C, Yang J, Wang S, Dai J, Ye L. EZH2 promotes DNA replication by stabilizing interaction of POLδ and PCNA via methylation-mediated PCNA trimerization. Epigenetics Chromatin 2018; 11:44. [PMID: 30071900 PMCID: PMC6071395 DOI: 10.1186/s13072-018-0213-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 07/25/2018] [Indexed: 12/14/2022] Open
Abstract
Background Proliferating cell nuclear antigen (PCNA), a ring-shaped homotrimer complex, promotes DNA replication via binding to DNA polymerase. Trimerized PCNA is critical for DNA replication. Enhancer of zeste homologue 2 (EZH2), which primarily acts as a histone methyltransferase, is essential for proliferation. However, how EZH2 promotes proliferation by controlling DNA replication through PCNA remains elusive. Results Here, we showed that low EZH2 levels repressed the proliferation of human dental pulp cells (hDPCs). The EZH2 protein level was dramatically upregulated in hDPCs at S phase in the absence of H3K27 trimethylation. Molecularly, EZH2 interacted with PCNA via the PIP box and dimethylated PCNA at lysine 110. Dimethylation of PCNA is essential for stabilization of the PCNA trimer and the binding of DNA polymerase δ to PCNA. Conclusions Our data reveal the direct interaction between PCNA and EZH2 and a novel mechanism by which EZH2 orchestrates genome duplication. Electronic supplementary material The online version of this article (10.1186/s13072-018-0213-1) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Peng A
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Xinyi Xu
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Chenglin Wang
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Jing Yang
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Shida Wang
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Jiewen Dai
- Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Ling Ye
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, People's Republic of China.
| |
Collapse
|
36
|
Wang M, Li L, Liu J, Wang J. A gene interaction network‑based method to measure the common and heterogeneous mechanisms of gynecological cancer. Mol Med Rep 2018; 18:230-242. [PMID: 29749503 PMCID: PMC6059674 DOI: 10.3892/mmr.2018.8961] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 03/01/2018] [Indexed: 01/01/2023] Open
Abstract
Gynecological malignancies are a leading cause of mortality in the female population. The present study intended to identify the association between three severe types of gynecological cancer, specifically ovarian cancer, cervical cancer and endometrial cancer, and to identify the connective driver genes, microRNAs (miRNAs) and biological processes associated with these types of gynecological cancer. In the present study, individual driver genes for each type of cancer were identified using integrated analysis of multiple microarray data. Gene Ontology (GO) has been used widely in functional annotation and enrichment analysis. In the present study, GO enrichment analysis revealed a number of common biological processes involved in gynecological cancer, including 'cell cycle' and 'regulation of macromolecule metabolism'. Kyoto Encyclopedia of Genes and Genomes pathway analysis is a resource for understanding the high‑level functions and utilities of a biological system from molecular‑level information. In the present study, the most common pathway was 'cell cycle'. A protein‑protein interaction network was constructed to identify a hub of connective genes, including minichromosome maintenance complex component 2 (MCM2), matrix metalloproteinase 2 (MMP2), collagen type I α1 chain (COL1A1) and Jun proto‑oncogene AP‑1 transcription factor subunit (JUN). Survival analysis revealed that the expression of MCM2, MMP2, COL1A1 and JUN was associated with the prognosis of the aforementioned gynecological cancer types. By constructing an miRNA‑driver gene network, let‑7 targeted the majority of the driver genes. In conclusion, the present study demonstrated a connection model across three types of gynecological cancer, which was useful in identifying potential diagnostic markers and novel therapeutic targets, in addition to in aiding the prediction of the development of cancer as it progresses.
Collapse
Affiliation(s)
- Mingyuan Wang
- The Affiliated Zhuzhou Hospital Xiangya Medical College CSU, Zhuzhou, Hunan 412000, P.R. China
| | - Liping Li
- The Affiliated Zhuzhou Hospital Xiangya Medical College CSU, Zhuzhou, Hunan 412000, P.R. China
| | - Jinglan Liu
- The Affiliated Zhuzhou Hospital Xiangya Medical College CSU, Zhuzhou, Hunan 412000, P.R. China
| | - Jinjin Wang
- The Affiliated Zhuzhou Hospital Xiangya Medical College CSU, Zhuzhou, Hunan 412000, P.R. China
| |
Collapse
|
37
|
Carroll TD, Newton IP, Chen Y, Blow JJ, Näthke I. Lgr5 + intestinal stem cells reside in an unlicensed G 1 phase. J Cell Biol 2018; 217:1667-1685. [PMID: 29599208 PMCID: PMC5940300 DOI: 10.1083/jcb.201708023] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 01/23/2018] [Accepted: 02/27/2018] [Indexed: 12/21/2022] Open
Abstract
During late mitosis and the early G1 phase, the origins of replication are licensed by binding to double hexamers of MCM2-7. In this study, we investigated how licensing and proliferative commitment are coupled in the epithelium of the small intestine. We developed a method for identifying cells in intact tissue containing DNA-bound MCM2-7. Interphase cells above the transit-amplifying compartment had no DNA-bound MCM2-7, but still expressed the MCM2-7 protein, suggesting that licensing is inhibited immediately upon differentiation. Strikingly, we found most proliferative Lgr5+ stem cells are in an unlicensed state. This suggests that the elongated cell-cycle of intestinal stem cells is caused by an increased G1 length, characterized by dormant periods with unlicensed origins. Significantly, the unlicensed state is lost in Apc-mutant epithelium, which lacks a functional restriction point, causing licensing immediately upon G1 entry. We propose that the unlicensed G1 phase of intestinal stem cells creates a temporal window when proliferative fate decisions can be made.
Collapse
Affiliation(s)
- Thomas D Carroll
- Cell and Developmental Biology, University of Dundee, Dundee, Scotland, UK
| | - Ian P Newton
- Cell and Developmental Biology, University of Dundee, Dundee, Scotland, UK
| | - Yu Chen
- Cell and Developmental Biology, University of Dundee, Dundee, Scotland, UK
| | - J Julian Blow
- Centre for Gene Regulation and Expression, University of Dundee, Dundee, Scotland, UK
| | - Inke Näthke
- Cell and Developmental Biology, University of Dundee, Dundee, Scotland, UK
| |
Collapse
|
38
|
Kaplani K, Koutsi S, Armenis V, Skondra FG, Karantzelis N, Champeris Tsaniras S, Taraviras S. Wound healing related agents: Ongoing research and perspectives. Adv Drug Deliv Rev 2018; 129:242-253. [PMID: 29501699 DOI: 10.1016/j.addr.2018.02.007] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 01/28/2018] [Accepted: 02/26/2018] [Indexed: 02/07/2023]
Abstract
Wound healing response plays a central part in chronic inflammation, affecting millions of people worldwide. It is a dynamic process that can lead to fibrosis, if tissue damage is irreversible and wound resolution is not attained. It is clear that there is a tight interconnection among wound healing, fibrosis and a variety of chronic disease conditions, demonstrating the heterogeneity of this pathology. Based on our further understanding of the cellular and molecular mechanisms underpinning tissue repair, new therapeutic approaches have recently been developed that target different aspects of the wound healing process and fibrosis. Nevertheless, several issues still need to be taken into consideration when designing modern wound healing drug delivery formulations. In this review, we highlight novel pharmacological agents that hold promise for targeting wound repair and fibrosis. We also focus on drug-delivery systems that may enhance current and future therapies.
Collapse
Affiliation(s)
- Konstantina Kaplani
- Division of Stem Cells and Regenerative Medicine, Biomedical Postgraduate Programme, School of Medicine, University of Patras, Patras 26504, Greece; Department of Physiology, School of Medicine, University of Patras, Patras 26504, Greece
| | - Stamatina Koutsi
- Division of Stem Cells and Regenerative Medicine, Biomedical Postgraduate Programme, School of Medicine, University of Patras, Patras 26504, Greece; Department of Physiology, School of Medicine, University of Patras, Patras 26504, Greece
| | - Vasileios Armenis
- Division of Stem Cells and Regenerative Medicine, Biomedical Postgraduate Programme, School of Medicine, University of Patras, Patras 26504, Greece
| | - Foteini G Skondra
- Division of Stem Cells and Regenerative Medicine, Biomedical Postgraduate Programme, School of Medicine, University of Patras, Patras 26504, Greece
| | - Nickolas Karantzelis
- Department of Physiology, School of Medicine, University of Patras, Patras 26504, Greece
| | | | - Stavros Taraviras
- Division of Stem Cells and Regenerative Medicine, Biomedical Postgraduate Programme, School of Medicine, University of Patras, Patras 26504, Greece; Department of Physiology, School of Medicine, University of Patras, Patras 26504, Greece.
| |
Collapse
|
39
|
Tsoumas D, Nikou S, Giannopoulou E, Champeris Tsaniras S, Sirinian C, Maroulis I, Taraviras S, Zolota V, Kalofonos HP, Bravou V. ILK Expression in Colorectal Cancer Is Associated with EMT, Cancer Stem Cell Markers and Chemoresistance. Cancer Genomics Proteomics 2018; 15:127-141. [PMID: 29496692 PMCID: PMC5892607 DOI: 10.21873/cgp.20071] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 01/24/2018] [Accepted: 02/02/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND/AIM Epithelial-mesenchymal transition (EMT) and cancer stem cells (CSC) are critically implicated in cancer metastasis and chemoresistance. Herein, we investigated integrin-linked kinase (ILK)'s role in human colon cancer (CRC) progression and chemoresistance in relation to EMT and CSC markers. PATIENTS AND METHODS Expression of ILK, EMT and CSC markers were evaluated by immunohistochemistry in 149 CRC samples. We also generated colon cancer cells resistant to 5-FU and oxaliplatin and studied the effect of ILK inhibition on drug response by MTT assay and on EMT and CSC markers' expression. RESULTS ILK expression in human CRC correlates with EMT and CSC markers and is associated with metastasis and chemoresistance. ILK inhibition increases sensitivity of resistant cells to 5-FU and oxaliplatin and reduces the levels of EMT and CSC markers in 5-FU resistant cells. CONCLUSION ILK overexpression in human CRC associates with EMT and CSC traits, contributing to tumor progression and chemoresistance.
Collapse
Affiliation(s)
- Dimitrios Tsoumas
- Department of Anatomy-Histology-Embryology, Medical School, University of Patras, Patras, Greece
| | - Sofia Nikou
- Department of Anatomy-Histology-Embryology, Medical School, University of Patras, Patras, Greece
| | | | | | - Chaido Sirinian
- Clinical Oncology Laboratory, University of Patras Medical School, Patras, Greece
| | - Ioannis Maroulis
- Department of Surgery, University of Patras Medical School, Patras, Greece
| | - Stavros Taraviras
- Department of Physiology, Medical School, University of Patras, Patras, Greece
| | - Vassiliki Zolota
- Department of Pathology, University of Patras Medical School, Patras, Greece
| | | | - Vasiliki Bravou
- Department of Anatomy-Histology-Embryology, Medical School, University of Patras, Patras, Greece
| |
Collapse
|
40
|
Huang YS, Jie N, Zhang YX, Zou KJ, Weng Y. shRNA-induced silencing of Ras-related C3 botulinum toxin substrate 1 inhibits the proliferation of colon cancer cells through upregulation of BAD and downregulation of cyclin D1. Int J Mol Med 2017; 41:1397-1408. [PMID: 29286138 PMCID: PMC5819921 DOI: 10.3892/ijmm.2017.3345] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 12/13/2017] [Indexed: 01/03/2023] Open
Abstract
Ras-related C3 botulinum toxin substrate 1 (RAC1) is a member of the Rho family of small GTPases. Recent studies have reported that RAC1 serves an important role in colon cancer cell proliferation. The present study aimed to investigate the effects of RAC1 knockdown on cell proliferation, cell cycle progression and apoptosis of colon cancer cells. Lentivirus-mediated short hairpin RNA (shRNA) was used to knockdown RAC1 expression in colon cancer cell lines, and cell proliferation, apoptosis, cell cycle progression were evaluated by MTT assays and flow cytometry. The differences in mRNAs expression were identified between RAC1-knockdown cells and control cells using a mRNA microarray, following which quantitative PCR (qPCR) and western blot were employed to confirm the results of the mRNA microarray. The proliferative ability of colon cancer cells was significantly decreased following RAC1 knockdown, and RAC1 knockdown increased the apoptotic rate and enhanced cell cycle arrest at G1 phase in colon cancer cells. In addition, >1,200 known genes were demonstrated to be involved in RAC1-associated tumorigenic functions in SW620 colon cancer cells, as determined by gene chip analysis; these genes were associated with cell proliferation, cell cycle, apoptosis and metastasis. Furthermore, western blot analysis indicated that cyclin D1 was downregulated, whereas B-cell lymphoma 2-associated agonist of cell death (BAD) was upregulated following RAC1 knockdown in colon cancer cells. In conclusion, RAC1 silencing may suppress the proliferation of colon cancer cells by inducing apoptosis and cell cycle arrest. In addition, a large number of genes were revealed to be involved in the process, including BAD, which was upregulated and cyclin D1, which was downregulated. Further studies on these differentially expressed genes may provide a better understanding of the potential roles of RAC1 in colon carcinogenesis.
Collapse
Affiliation(s)
- You-Sheng Huang
- Department of Pathology, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, Hainan 571101, P.R. China
| | - Na Jie
- Department of Pathology, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, Hainan 571101, P.R. China
| | - Yi-Xin Zhang
- Department of Pathology, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, Hainan 571101, P.R. China
| | - Ke-Jian Zou
- Department of Gastrointestinal Surgery, Hainan Provincial People's Hospital, Haikou, Hainan 570311, P.R. China
| | - Yang Weng
- Department of Pathology, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, Hainan 571101, P.R. China
| |
Collapse
|
41
|
Senfter D, Erkan EP, Özer E, Jungwirth G, Madlener S, Kool M, Ströbel T, Saydam N, Saydam O. Overexpression of minichromosome maintenance protein 10 in medulloblastoma and its clinical implications. Pediatr Blood Cancer 2017; 64. [PMID: 28598542 DOI: 10.1002/pbc.26670] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 05/09/2017] [Accepted: 05/10/2017] [Indexed: 01/23/2023]
Abstract
BACKGROUND Overexpression of minichromosome maintenance (MCM) proteins 2, 3, and 7 is associated with migration and invasion in medulloblastoma (MB). However, expression profiling of all prereplication complex (pre-RC) has not been addressed in MBs. PROCEDURE We performed mRNA expression profiling of a large set of pre-RC elements in cell lines and tumor tissues of MB. RNAi technology was employed for functional studies in MB cell lines. RESULTS Our data showed that most of the pre-RC components are significantly overexpressed in MB. Among all pre-RC mRNAs, MCM10 showed the highest level of expression (∼500- to 1,000-fold) in MB cell lines and tissues compared to the levels detected in cerebellum. In addition, RNAi silencing of MCM10 caused reduced cell proliferation and cell viability in MB cells. CONCLUSIONS Taken together, our study reveals that the pre-RC is dysregulated in MB. In addition, MCM10, a member of this complex, is significantly overexpressed in MB and is required for tumor cell proliferation.
Collapse
Affiliation(s)
- Daniel Senfter
- Department of Pediatrics and Adolescent Medicine, Molecular Neuro-oncology Research Unit, Medical University of Vienna, Vienna, Austria
| | - Erdogan Pekcan Erkan
- Department of Pediatrics and Adolescent Medicine, Molecular Neuro-oncology Research Unit, Medical University of Vienna, Vienna, Austria
| | - Erdener Özer
- Department of Pathology, School of Medicine, Dokuz Eylül University, Izmir, Turkey
| | - Gerhard Jungwirth
- Department of Pediatrics and Adolescent Medicine, Molecular Neuro-oncology Research Unit, Medical University of Vienna, Vienna, Austria
| | - Sibylle Madlener
- Department of Pediatrics and Adolescent Medicine, Molecular Neuro-oncology Research Unit, Medical University of Vienna, Vienna, Austria
| | - Marcel Kool
- Division of Pediatric Neuro-Oncology, German Cancer Research Center DKFZ, Germany
| | - Thomas Ströbel
- Institute of Neurology, Medical University of Vienna, Vienna, Austria
| | - Nurten Saydam
- Department of Pediatrics and Adolescent Medicine, Molecular Neuro-oncology Research Unit, Medical University of Vienna, Vienna, Austria.,Department of Neurology, Neurogenetics Unit, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts
| | - Okay Saydam
- Department of Pediatrics and Adolescent Medicine, Molecular Neuro-oncology Research Unit, Medical University of Vienna, Vienna, Austria.,Department of Neurology, Neurogenetics Unit, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts
| |
Collapse
|
42
|
Mechanism study of isoflavones as an anti-retinoblastoma progression agent. Oncotarget 2017; 8:88401-88409. [PMID: 29179444 PMCID: PMC5687614 DOI: 10.18632/oncotarget.19365] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 06/27/2017] [Indexed: 01/14/2023] Open
Abstract
Isoflavones, bioactive soy compounds, are known to exhibit anticancer activities. The present study investigated the anticancer activities of isoflavones on human retinoblastoma Y79 cells in vitro and in vivo. An MTT cell viability assay showed that the half maximal inhibitory concentration value of isoflavones against human retinoblastoma Y79 cells is 1.23 ± 0.42 μmol/l. Flow cytometry analysis indicated that isoflavones blocked G1/S progression. Western blot analysis demonstrated that the mammalian target of rapamycin (mTOR) pathway in Y79 cells was inhibited by isoflavones, with a concomitant decrease in cyclin E1, which accounted for the isoflavone-mediated G1 phase arrest. Isoflavones also inhibited human retinoblastoma growth in vivo; western blot analysis showed inhibition of mTOR and downregulation of cyclin E1 in an isoflavone-treated xenograft mouse model. Together, these results illustrate that isoflavones inhibit retinoblastoma tumour growth in vitro and vivo and that inactivation of the mTOR pathway and downregulation of cyclin E1 is involved in this action. The results of this study suggest that isoflavones could be tested as promising anti-retinoblastoma agent.
Collapse
|
43
|
Zhang MM, Sun F, Cui B, Zhang LL, Fang Y, Li Y, Zhang RJ, Ye XP, Ma YR, Han B, Song HD. Tumor-suppressive function of UNC5D in papillary thyroid cancer. Oncotarget 2017; 8:96126-96138. [PMID: 29221192 PMCID: PMC5707086 DOI: 10.18632/oncotarget.21759] [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: 03/31/2017] [Accepted: 06/28/2017] [Indexed: 12/23/2022] Open
Abstract
Background Studies have shown an association of the UNC5D gene with kidney and bladder cancer and neuroblastoma. We investigated whether UNC5D acts as a tumor suppressor in papillary thyroid carcinoma (PTC). Methods Primary PTC tumors and matched normal thyroid tissues were obtained from 112 patients to detect UNC5D mRNA by real-time PCR. Genomic DNA sequencing was performed to detect BRAF mutation in PTC tumors. The association between UNC5D expression and clinicopathological data from PTC patients was reviewed retrospectively. PTC-derived cancer cell lines TPC-1 and K1 with stable transfection of UNC5D were used to investigate the functions of UNC5D. Flow cytometry, CCK-8, Transwell assay and scratch tests were used to examine cell cycle distribution, proliferation and migration. Results The expression of UNC5D was significantly decreased in PTC compared with adjacent normal thyroid tissues. Lower UNC5D expression was significantly associated with aggressive tumor behaviors, such as lymph node metastasis and BRAF mutation. Overexpression of UNC5D significantly suppressed malignant cell behaviors, including cell proliferation and migration, as well as tumor growth in vivo. Conclusions These findings suggest a potential tumor suppressor role of UNC5D in PTC progression; and provide insight into potential clinical relevance for the prognosis of PTC.
Collapse
Affiliation(s)
- Man-Man Zhang
- The Core Laboratory in Medicine Center of Clinical Research, Department of Endocrinology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
| | - Feng Sun
- The Core Laboratory in Medicine Center of Clinical Research, Department of Endocrinology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
| | - Bing Cui
- Department of Transfusion, The Hospital Affiliated to Jiangsu University, Zhenjiang 212001, China
| | - Le-Le Zhang
- The Core Laboratory in Medicine Center of Clinical Research, Department of Endocrinology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
| | - Ya Fang
- The Core Laboratory in Medicine Center of Clinical Research, Department of Endocrinology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
| | - Yan Li
- The Core Laboratory in Medicine Center of Clinical Research, Department of Endocrinology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
| | - Rui-Jia Zhang
- The Core Laboratory in Medicine Center of Clinical Research, Department of Endocrinology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
| | - Xiao-Ping Ye
- The Core Laboratory in Medicine Center of Clinical Research, Department of Endocrinology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
| | - Yu-Ru Ma
- The Core Laboratory in Medicine Center of Clinical Research, Department of Endocrinology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
| | - Bing Han
- The Core Laboratory in Medicine Center of Clinical Research, Department of Endocrinology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
| | - Huai-Dong Song
- The Core Laboratory in Medicine Center of Clinical Research, Department of Endocrinology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
| |
Collapse
|
44
|
Kim JY, Choi HG, Lee HM, Lee GA, Hwang KA, Choi KC. Effects of bisphenol compounds on the growth and epithelial mesenchymal transition of MCF-7 CV human breast cancer cells. J Biomed Res 2017; 31:358-369. [PMID: 28808208 PMCID: PMC5548997 DOI: 10.7555/jbr.31.20160162] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Bisphenol-A (BPA) has been considered as an endocrine disrupting chemical (EDC) because it can exert estrogenic properties. For bisphenol-S (BPS) and bisphenol-F (BPF) that are BPA analogs and substitutes, their risk to estrogen-dependent cancer has been reported rarely compared with the numerous cases of BPA. In this study, we examined whether BPA, BPS, and BPF can lead to the proliferation, migration, and epithelial mesenchymal transition (EMT) of MCF-7 clonal variant (MCF-7 CV) breast cancer cells expressing estrogen receptors (ERs). In a cell viability assay, BPA, BPS, and BPF significantly increased proliferation of MCF-7 CV cells compared to control (DMSO) as did 17β-estradiol (E2). In Western blotting assay, BPA, BPS, and BPF enhanced the protein expression of cell cycle progression genes such as cyclin D1 and E1. In addition, MCF-7 CV cells lost cell to cell contacts and acquired fibroblast-like morphology by the treatment of BPA, BPS, or BPF for 24 hours. In cell migration assay, BPA, BPS, and BPF accelerated the migration capability of MCF-7 CV cells as did E2. In relation with the EMT process, BPA, BPS, and BPF increased the protein expression ofN-cadherin, while they decreased the protein expression of E-cadherin. When BPA, BPS, and BPF were co-treated with ICI 182,780, an ER antagonist, proliferation effects were reversed, the expression of cyclin D1 and cyclin E1 was downregulated, and the altered cell migration and expression ofN-cadherin and E-cadherin by BPA, BPS, and BPF were restored to the control level. Thus, these results imply that BPS and BPF also have the risk of breast cancer progression as much as BPA in the induction of proliferation and migration of MCF-7 CV cells by regulating the protein expression of cell cycle-related genes and EMT markersvia the ER-dependent pathway.
Collapse
Affiliation(s)
- Ji-Youn Kim
- Laboratory of Biochemistry and Immunology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 28644 Republic of Korea
| | - Ho-Gyu Choi
- Laboratory of Biochemistry and Immunology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 28644 Republic of Korea
| | - Hae-Miru Lee
- Laboratory of Biochemistry and Immunology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 28644 Republic of Korea
| | - Geum-A Lee
- Laboratory of Biochemistry and Immunology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 28644 Republic of Korea
| | - Kyung-A Hwang
- Laboratory of Biochemistry and Immunology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 28644 Republic of Korea
| | - Kyung-Chul Choi
- Laboratory of Biochemistry and Immunology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 28644 Republic of Korea
| |
Collapse
|
45
|
Peng C, Yang Q, Wei B, Yuan B, Liu Y, Li Y, Gu D, Yin G, Wang B, Xu D, Zhang X, Kong D. Investigation of crucial genes and microRNAs in conventional osteosarcoma using gene expression profiling analysis. Mol Med Rep 2017; 16:7617-7624. [PMID: 28944822 DOI: 10.3892/mmr.2017.7506] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 07/03/2017] [Indexed: 11/06/2022] Open
Abstract
The present study aimed to screen potential genes associated with conventional osteosarcoma (OS) and obtain further information on the pathogenesis of this disease. The microarray dataset GSE14359 was downloaded from the Gene Expression Omnibus. A total of 10 conventional OS samples and two non‑neoplastic primary osteoblast samples in the dataset were selected to identify the differentially expressed genes (DEGs) using the Linear Models for Microarray Data package. The potential functions of the DEGs were predicted using Gene Ontology (GO) and pathway enrichment analyses. Protein‑protein interaction (PPI) data were also obtained using the Search Tool for the Retrieval of Interacting Genes database, and the PPI network was visualized using Cytoscape. Module analysis was then performed using the Molecular Complex Detection module. Additionally, the potential microRNAs (miRNAs) for the upregulated DEGs in the most significant pathway were predicted using the miRDB database, and the regulatory network for the miRNAs‑DEGs was visualized in Cytoscape. In total, 317 upregulated and 670 downregulated DEGs were screened. Certain DEGs, including cyclin‑dependent kinase 1 (CDK1), mitotic arrest deficient 2 like 1 (MAD2L1) and BUB1 mitotic checkpoint serine/threonine‑protein kinase (BUB1), were significantly enriched in the cell cycle phase and oocyte meiosis pathway. DEGs, including replication factor C subunit 2 (RFC2), RFC3, RFC4 and RFC5, were significantly enriched in DNA replication and interacted with each other. RFC4 also interacted with other DEGs, including CDK1, MAD2L1, NDC80 kinetochore complex and BUB1. In addition, RFC4, RFC3 and RFC5 were targeted by miRNA (miR)‑802, miR‑224‑3p and miR‑522‑3p. The DEGs encoding RFC may be important for the development of conventional OS, and their expression may be regulated by a number of miRNAs, including miR‑802, miR‑224‑3p and miR‑522‑3p.
Collapse
Affiliation(s)
- Chuangang Peng
- Orthopaedic Medical Center, The 2nd Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Qi Yang
- Department of Gynecology and Obstetrics, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Bo Wei
- Department of Neurosurgery, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Baoming Yuan
- Orthopaedic Medical Center, The 2nd Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Yong Liu
- Department of Orthopaedics, Jilin Oilfield General Hospital, Songyuan, Jilin 131200, P.R. China
| | - Yuxiang Li
- Department of Orthopaedics, Jilin Oilfield General Hospital, Songyuan, Jilin 131200, P.R. China
| | - Dawer Gu
- Department of Orthopaedics, Jilin Oilfield General Hospital, Songyuan, Jilin 131200, P.R. China
| | - Guochao Yin
- Department of Orthopaedics, Jilin Oilfield General Hospital, Songyuan, Jilin 131200, P.R. China
| | - Bo Wang
- Department of Orthopaedics, Jilin Oilfield General Hospital, Songyuan, Jilin 131200, P.R. China
| | - Dehui Xu
- Department of Orthopaedics, Jilin Oilfield General Hospital, Songyuan, Jilin 131200, P.R. China
| | - Xuebing Zhang
- Department of Orthopaedics, Jilin Oilfield General Hospital, Songyuan, Jilin 131200, P.R. China
| | - Daliang Kong
- Department of Orthopaedics, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| |
Collapse
|
46
|
Terzibasi-Tozzini E, Martinez-Nicolas A, Lucas-Sánchez A. The clock is ticking. Ageing of the circadian system: From physiology to cell cycle. Semin Cell Dev Biol 2017. [PMID: 28630025 DOI: 10.1016/j.semcdb.2017.06.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The circadian system is the responsible to organise the internal temporal order in relation to the environment of every process of the organisms producing the circadian rhythms. These rhythms have a fixed phase relationship among them and with the environment in order to optimise the available energy and resources. From a cellular level, circadian rhythms are controlled by genetic positive and negative auto-regulated transcriptional and translational feedback loops, which generate 24h rhythms in mRNA and protein levels of the clock components. It has been described about 10% of the genome is controlled by clock genes, with special relevance, due to its implications, to the cell cycle. Ageing is a deleterious process which affects all the organisms' structures including circadian system. The circadian system's ageing may produce a disorganisation among the circadian rhythms, arrhythmicity and, even, disconnection from the environment, resulting in a detrimental situation to the organism. In addition, some environmental conditions can produce circadian disruption, also called chronodisruption, which may produce many pathologies including accelerated ageing. Finally, some strategies to prevent, palliate or counteract chronodisruption effects have been proposed to enhance the circadian system, also called chronoenhancement. This review tries to gather recent advances in the chronobiology of the ageing process, including cell cycle, neurogenesis process and physiology.
Collapse
Affiliation(s)
| | - Antonio Martinez-Nicolas
- Department of Physiology, Faculty of Biology, University of Murcia, Campus Mare Nostrum, IUIE. IMIB-Arrixaca, Murcia, Spain; Ciber Fragilidad y Envejecimiento Saludable (CIBERFES), Madrid, Spain
| | - Alejandro Lucas-Sánchez
- Department of Physiology, Faculty of Biology, University of Murcia, Campus Mare Nostrum, IUIE. IMIB-Arrixaca, Murcia, Spain; Ciber Fragilidad y Envejecimiento Saludable (CIBERFES), Madrid, Spain.
| |
Collapse
|
47
|
Reinhart M, Cardoso MC. A journey through the microscopic ages of DNA replication. PROTOPLASMA 2017; 254:1151-1162. [PMID: 27943022 PMCID: PMC5376393 DOI: 10.1007/s00709-016-1058-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 12/01/2016] [Indexed: 06/06/2023]
Abstract
Scientific discoveries and technological advancements are inseparable but not always take place in a coherent chronological manner. In the next, we will provide a seemingly unconnected and serendipitous series of scientific facts that, in the whole, converged to unveil DNA and its duplication. We will not cover here the many and fundamental contributions from microbial genetics and in vitro biochemistry. Rather, in this journey, we will emphasize the interplay between microscopy development culminating on super resolution fluorescence microscopy (i.e., nanoscopy) and digital image analysis and its impact on our understanding of DNA duplication. We will interlace the journey with landmark concepts and experiments that have brought the cellular DNA replication field to its present state.
Collapse
Affiliation(s)
- Marius Reinhart
- Cell Biology and Epigenetics, Department of Biology, Technische Universität Darmstadt, Schnittspahnstrasse 10, 64287, Darmstadt, Germany
| | - M Cristina Cardoso
- Cell Biology and Epigenetics, Department of Biology, Technische Universität Darmstadt, Schnittspahnstrasse 10, 64287, Darmstadt, Germany.
| |
Collapse
|
48
|
Li X, Liu F, Lin B, Luo H, Liu M, Wu J, Li C, Li R, Zhang X, Zhou K, Ren D. miR‑150 inhibits proliferation and tumorigenicity via retarding G1/S phase transition in nasopharyngeal carcinoma. Int J Oncol 2017; 50:1097-1108. [PMID: 28350089 PMCID: PMC5363880 DOI: 10.3892/ijo.2017.3909] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 02/24/2017] [Indexed: 12/02/2022] Open
Abstract
Cancer cells are characterized by a pathological manifestation of uncontrolled proliferation, which results in tumor formation. Therefore, it is necessary to improve understanding of the underlying mechanism of cell cycle control. Here, we report that miR-150 is downregulated in nasopharyngeal carcinoma tissues and cells. Upregulation of miR-150 suppresses nasopharyngeal carcinoma (NPC) cell proliferation and induces G1/S arrest in vitro, and inhibits tumorigenesis in vivo. Conversely, silencing miR-150 yields the opposite effect. Our results further demonstrate that miR-150 retards nasopharyngeal carcinoma cell proliferation and G1/S transition via targeting multiple cell cycle-related genes, including CCND1, CCND2, CDK2 and CCNE2. Therefore, our results uncover a novel mechanistic understanding of miR-150-mediated tumor suppression in NPC, which will facilitate the development of effective cancer therapies against nasopharyngeal carcinoma.
Collapse
Affiliation(s)
- Xiangyong Li
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Key Laboratory of Medical Bioactive Molecular Research for Department of Education of Guangdong Province, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Fumei Liu
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Key Laboratory of Medical Bioactive Molecular Research for Department of Education of Guangdong Province, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Bihua Lin
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Key Laboratory of Medical Bioactive Molecular Research for Department of Education of Guangdong Province, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Haiqing Luo
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Key Laboratory of Medical Bioactive Molecular Research for Department of Education of Guangdong Province, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Meilian Liu
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Key Laboratory of Medical Bioactive Molecular Research for Department of Education of Guangdong Province, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Jinhua Wu
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Key Laboratory of Medical Bioactive Molecular Research for Department of Education of Guangdong Province, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Caihong Li
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Key Laboratory of Medical Bioactive Molecular Research for Department of Education of Guangdong Province, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Ronggang Li
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Key Laboratory of Medical Bioactive Molecular Research for Department of Education of Guangdong Province, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Xin Zhang
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Key Laboratory of Medical Bioactive Molecular Research for Department of Education of Guangdong Province, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Keyuan Zhou
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Key Laboratory of Medical Bioactive Molecular Research for Department of Education of Guangdong Province, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Dong Ren
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Key Laboratory of Medical Bioactive Molecular Research for Department of Education of Guangdong Province, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| |
Collapse
|
49
|
Patmanidi AL, Champeris Tsaniras S, Karamitros D, Kyrousi C, Lygerou Z, Taraviras S. Concise Review: Geminin-A Tale of Two Tails: DNA Replication and Transcriptional/Epigenetic Regulation in Stem Cells. Stem Cells 2016; 35:299-310. [DOI: 10.1002/stem.2529] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 09/18/2016] [Accepted: 10/01/2016] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - Dimitris Karamitros
- Department of Physiology; Medical School, University of Patras; Rio Patras Greece
| | - Christina Kyrousi
- Department of Physiology; Medical School, University of Patras; Rio Patras Greece
| | - Zoi Lygerou
- Department of Biology; Medical School, University of Patras; Rio Patras Greece
| | - Stavros Taraviras
- Department of Physiology; Medical School, University of Patras; Rio Patras Greece
| |
Collapse
|
50
|
Liu Y, Zhan P, Zhou Z, Xing Z, Zhu S, Ma C, Li Q, Zhu Q, Miao Y, Zhang J, Lv T, Song Y. The overexpression of KIFC1 was associated with the proliferation and prognosis of non-small cell lung cancer. J Thorac Dis 2016; 8:2911-2923. [PMID: 27867568 DOI: 10.21037/jtd.2016.10.67] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND The kinesin family member C1 (KIFC1, also known as HSET) is a kinesin superfamily protein (KIFs). Although KIFC1 acts as a crucial role in the development of several human cancers, the KIFC1 expression profile and functional remain unclear in non-small cell lung cancer (NSCLC). METHODS We collected the fresh NSCLC samples and paired normal lung tissue in patients with lung cancer operation, and detected KIFC1 expression using quantitative reverse-transcription polymerase chain reaction (qRT-PCR) and Western blotting. To expand on previous smaller-scale studies, NSCLC tissue microarrays (TMA) were analyzed by IHC. Finally, cell lines were employed to further probe the potential mechanisms. RESULTS In this study, we described that KIFC1 was significantly upregulated in NSCLC tissues compared with the corresponding normal tissues. Moreover, KIFC1 overexpression was associated with the poor overall survival (OS) of NSCLC patients, and siRNA-mediated knockdown of KIFC1 significantly suppressed tumor cell proliferation in vitro. Further verification showed that inhibition of KIFC1 gene expression caused the upregulation of the cyclin-dependent kinases inhibitor p21 and downregulation of the cell cycle driver protein cdc2, which arrested cells in the G2-M phase. CONCLUSIONS we report that increased KIFC1 expression may promote cell proliferation and identified it as a biomarker of unfavorable prognosis in NSCLC patients.
Collapse
Affiliation(s)
- Yafang Liu
- Department of Respiratory Medicine, Jinling Hospital, Southern Medical University, Nanjing 210002, China
| | - Ping Zhan
- Department of Respiratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
| | - Zejun Zhou
- Department of Respiratory Medicine, Jinling Hospital, Southern Medical University, Nanjing 210002, China
| | - Ze Xing
- Department of Respiratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
| | - Suhua Zhu
- Department of Respiratory Medicine, Jinling Hospital, Southern Medical University, Nanjing 210002, China
| | - Chenhui Ma
- Department of Respiratory Medicine, Jinling Hospital, Southern Medical University, Nanjing 210002, China
| | - Qian Li
- Department of Respiratory Medicine, Jinling Hospital, Southern Medical University, Nanjing 210002, China
| | - Qingqing Zhu
- Department of Respiratory Medicine, Jinling Hospital, Southern Medical University, Nanjing 210002, China
| | - Yingying Miao
- Department of Respiratory Medicine, Jinling Hospital, Southern Medical University, Nanjing 210002, China
| | - Jianya Zhang
- Department of Respiratory Medicine, Jinling Hospital, Southern Medical University, Nanjing 210002, China
| | - Tangfeng Lv
- Department of Respiratory Medicine, Jinling Hospital, Southern Medical University, Nanjing 210002, China;; Department of Respiratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
| | - Yong Song
- Department of Respiratory Medicine, Jinling Hospital, Southern Medical University, Nanjing 210002, China;; Department of Respiratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
| |
Collapse
|