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Qiu Y, Xu B, Feng J, Wang C, Chen Y, He Y, Xie X, Li Y. Loss of EPS8 sensitizes non-small-cell lung carcinoma to chemotherapy-induced DNA damage. Cancer Gene Ther 2023:10.1038/s41417-023-00606-1. [PMID: 36932195 DOI: 10.1038/s41417-023-00606-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 02/13/2023] [Accepted: 03/02/2023] [Indexed: 03/19/2023]
Abstract
Epidermal growth factor receptor pathway substrate number 8 (EPS8) has been reported to be critical in mediating tumor progression. However, the molecular and biological consequences of EPS8 overexpression remain unclear. Here we evaluated whether EPS8 increased DNA damage repair in non-small-cell lung carcinoma (NSCLC) cells and the mechanism of EPS8-mediated DNA damage repair which influenced chemosensitivity. Serial studies of functional experiments revealed that EPS8 knockdown inhibited cell growth, induced cell-cycle arrest and increased cisplatin therapeutic effects on NSCLC. EPS8 was found to induce DNA damage repair via upregulation of phosphorylated-ATM and downregulation of the tumor suppressor p53 and G1 cell kinase inhibitor p21. Moreover, in conjunction with cisplatin, decreasing EPS8 protein levels further increased p53 protein level and inhibited ATM signaling. Transplanted tumor studies were also performed to demonstrate that EPS8 knockdown inhibited tumor growth and sensitized tumors to cisplatin treatment. In conclusion, we have described a novel molecular mechanism through which EPS8 is likely to be involved in cancer progression and chemoresistance via DNA damage repair, indicating that EPS8 expression may influence the response to chemotherapy. Therefore, targeting EPS8 may be a potential therapeutic approach for patients with NSCLC.
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Affiliation(s)
- Yingqi Qiu
- Department of Hematology, Zhujiang Hospital, Southern Medical University, No. 253 Gongye Dadao Zhong, Guangzhou, Guangdong, 510285, P. R. China
| | - Binyan Xu
- Department of Hematology, Zhujiang Hospital, Southern Medical University, No. 253 Gongye Dadao Zhong, Guangzhou, Guangdong, 510285, P. R. China
| | - Jianhua Feng
- Department of Hematology, Zhujiang Hospital, Southern Medical University, No. 253 Gongye Dadao Zhong, Guangzhou, Guangdong, 510285, P. R. China
| | - Chunsheng Wang
- Department of Hematology, Zhujiang Hospital, Southern Medical University, No. 253 Gongye Dadao Zhong, Guangzhou, Guangdong, 510285, P. R. China
| | - Yiran Chen
- Department of Hematology, Zhujiang Hospital, Southern Medical University, No. 253 Gongye Dadao Zhong, Guangzhou, Guangdong, 510285, P. R. China
| | - Yanjie He
- Department of Hematology, Zhujiang Hospital, Southern Medical University, No. 253 Gongye Dadao Zhong, Guangzhou, Guangdong, 510285, P. R. China
| | - Xiaoling Xie
- Department of Hematology, Zhujiang Hospital, Southern Medical University, No. 253 Gongye Dadao Zhong, Guangzhou, Guangdong, 510285, P. R. China.
| | - Yuhua Li
- Department of Hematology, Zhujiang Hospital, Southern Medical University, No. 253 Gongye Dadao Zhong, Guangzhou, Guangdong, 510285, P. R. China. .,Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, Guangdong, 510005, P. R. China.
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Wang L, Yan M, Wu S, Wu X, Bu T, Wong CK, Ge R, Sun F, Cheng CY. Actin binding proteins, actin cytoskeleton and spermatogenesis – Lesson from toxicant models. Reprod Toxicol 2020; 96:76-89. [DOI: 10.1016/j.reprotox.2020.05.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 05/15/2020] [Accepted: 05/30/2020] [Indexed: 12/16/2022]
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Nair VA, Al-khayyal NA, Sivaperumal S, Abdel-Rahman WM. Calponin 3 promotes invasion and drug resistance of colon cancer cells. World J Gastrointest Oncol 2019; 11:971-982. [PMID: 31798778 PMCID: PMC6883188 DOI: 10.4251/wjgo.v11.i11.971] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 07/27/2019] [Accepted: 09/12/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Calponin 3 (CNN3) is an actin-binding protein expressed in smooth muscle and non-smooth muscle cells. It is required for cytoskeletal rearrangement and wound healing.
AIM To dissect the role of CNN3 in carcinogenesis with a focus on colon cancer.
METHODS A total of 20 cancer cell lines (8 breast, 11 colon, and HeLa cervical cancer cell as a positive control for mesenchymal phenotype) and 57 formalin-fixed, paraffin-embedded sections from archived sporadic colorectal carcinomas were included in this study. CNN3 expression analysis by western blot or immunohistochemistry was followed by functional analyses. The CNN3 gene was silenced by specific small interfering RNA (commonly known as siRNA), followed by confirmation of the silencing efficiency by western blotting. Then, the silenced cells and control siRNA-transfected cells were analyzed for changes in epithelial and mesenchymal markers, invasion, and response to 5-fluoruracil treatment. We also performed proteomics analysis using a phospho-kinase array-based panel of 45 proteins.
RESULTS CNN3 showed positive expression in 6/8 breast and 9/11 colon cancer lines and in HeLa cells. Interestingly, the colorectal adenocarcinoma line SW480 was negative, while the cell line developed from its matching lymph node metastasis (SW620) was positive for CNN3. CNN3 expression was fairly consistent with the metastatic phenotype in colon cancer because it was absent in one other colon cell line from a primary site and expressed in all others. We selected SW620 for subsequent functional analyses. CNN3-silenced SW620 cells showed a reduction in collagen invasion and loss of mesenchymal markers. CNN3 silencing caused an increase in the SW620 colon cancer cell sensitivity to 5-fluorouracil. Phospho-kinase array-based proteomics analysis showed that CNN3 silencing in SW620 reduced extracellular signal-regulated kinase, β-Catenin, mutant p53, c-Jun, and heat shock protein 60 activities but increased that of checkpoint kinase 2. CNN3 was expressed in 20/57 (35%) colon cancer cases as shown by immunohistochemistry. CNN3 was associated with a decrease in overall survival in colon cancer in silico.
CONCLUSION These results show the involvement of CNN3 in lymph node metastasis and resistance to chemotherapy in colon cancer and suggest that significant oncogenic pathways are involved in these CNN3-related actions.
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Affiliation(s)
- Vidhya A Nair
- Environment and Cancer Research Group, Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Noura A Al-khayyal
- College of Medicine and Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | | | - Wael M Abdel-Rahman
- Department of Medical Laboratory Sciences, College of Health Sciences and Environment and Cancer Research Group, Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
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Ma Y, Bu D, Long J, Chai W, Dong J. LncRNA DSCAM‐AS1 acts as a sponge of miR‐137 to enhance Tamoxifen resistance in breast cancer. J Cell Physiol 2018; 234:2880-2894. [PMID: 30203615 DOI: 10.1002/jcp.27105] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 06/29/2018] [Indexed: 12/30/2022]
Affiliation(s)
- Yun Ma
- Department of Breast SurgeryThe First Affiliated Hospital of Kunming Medical UniversityKunming Yunnan China
| | - Deyong Bu
- Department of Geriatric General SurgeryThe First Affiliated Hospital of Kunming Medical UniversityKunming Yunnan China
| | - Jiang Long
- Department of NeurosurgeryThe First Affiliated Hospital of Kunming Medical UniversityKunming Yunnan China
| | - Wenying Chai
- Department of Breast SurgeryThe First Affiliated Hospital of Kunming Medical UniversityKunming Yunnan China
| | - Jian Dong
- Yunnan Cancer HospitalThe Third Affiliated Hospital of Kunming Medical UniversityKunming Yunnan China
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Abdel-Rahman WM, Lotsari-Salomaa JE, Kaur S, Niskakoski A, Knuutila S, Järvinen H, Mecklin JP, Peltomäki P. The Role of Chromosomal Instability and Epigenetics in Colorectal Cancers Lacking β-Catenin/TCF Regulated Transcription. Gastroenterol Res Pract 2016; 2016:6089658. [PMID: 27047543 PMCID: PMC4800109 DOI: 10.1155/2016/6089658] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 02/01/2016] [Accepted: 02/02/2016] [Indexed: 12/15/2022] Open
Abstract
All colorectal cancer cell lines except RKO displayed active β-catenin/TCF regulated transcription. This feature of RKO was noted in familial colon cancers; hence our aim was to dissect its carcinogenic mechanism. MFISH and CGH revealed distinct instability of chromosome structure in RKO. Gene expression microarray of RKO versus 7 colon cancer lines (with active Wnt signaling) and 3 normal specimens revealed 611 differentially expressed genes. The majority of the tested gene loci were susceptible to LOH in primary tumors with various β-catenin localizations as a surrogate marker for β-catenin activation. The immunohistochemistry of selected genes (IFI16, RGS4, MCTP1, DGKI, OBCAM/OPCML, and GLIPR1) confirmed that they were differentially expressed in clinical specimens. Since epigenetic mechanisms can contribute to expression changes, selected target genes were evaluated for promoter methylation in patient specimens from sporadic and hereditary colorectal cancers. CMTM3, DGKI, and OPCML were frequently hypermethylated in both groups, whereas KLK10, EPCAM, and DLC1 displayed subgroup specificity. The overall fraction of hypermethylated genes was higher in tumors with membranous β-catenin. We identified novel genes in colorectal carcinogenesis that might be useful in personalized tumor profiling. Tumors with inactive Wnt signaling are a heterogeneous group displaying interaction of chromosomal instability, Wnt signaling, and epigenetics.
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Affiliation(s)
- Wael M. Abdel-Rahman
- Department of Medical Laboratory Sciences, College of Health Sciences and Sharjah Institute for Medical Research (SIMR), University of Sharjah, P.O. Box 27272, Sharjah, UAE
- Department of Medical and Clinical Genetics, University of Helsinki, 00290 Helsinki, Finland
| | | | - Sippy Kaur
- Department of Medical and Clinical Genetics, University of Helsinki, 00290 Helsinki, Finland
| | - Anni Niskakoski
- Department of Medical and Clinical Genetics, University of Helsinki, 00290 Helsinki, Finland
| | - Sakari Knuutila
- Department of Pathology, Haartman Institute and HUSLAB, University of Helsinki and Helsinki University Central Hospital, Helsinki, 00029 HUS, Finland
| | - Heikki Järvinen
- Second Department of Surgery, Helsinki University Central Hospital, Helsinki, 00029 HUS, Finland
| | - Jukka-Pekka Mecklin
- Department of Surgery, Jyväskylä Central Hospital, 40620 Jyväskylä, Finland
- Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Päivi Peltomäki
- Department of Medical and Clinical Genetics, University of Helsinki, 00290 Helsinki, Finland
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Huang CZ, Yu T, Chen QK. DNA Methylation Dynamics During Differentiation, Proliferation, and Tumorigenesis in the Intestinal Tract. Stem Cells Dev 2015; 24:2733-9. [PMID: 26413818 DOI: 10.1089/scd.2015.0235] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
DNA methylation, an epigenetic control mechanism in mammals, is widely present in the intestinal tract during the differentiation and proliferation of epithelial cells. Cells in stem cell pools or villi have different patterns of DNA methylation. The process of DNA methylation is dynamic and occurs at many relevant regulatory elements during the rapid transition of stem cells into fully mature, differentiated epithelial cells. Changes in DNA methylation patterns most often take place in enhancer and promoter regions and are associated with transcription factor binding. During differentiation, enhancer regions associated with genes important to enterocyte differentiation are demethylated, activating gene expression. Abnormal patterns of DNA methylation during differentiation and proliferation in the intestinal tract can lead to the formation of aberrant crypt foci and destroy the barrier and absorptive functions of the intestinal epithelium. Accumulation of these epigenetic changes may even result in tumorigenesis. In the current review, we discuss recent findings on the association between DNA methylation and cell differentiation and proliferation in the small intestine and highlight the possible links between dysregulation of this process and tumorigenesis.
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Affiliation(s)
- Can-Ze Huang
- Department of Gastroenterology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou, Guangdong, People's Republic of China
| | - Tao Yu
- Department of Gastroenterology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou, Guangdong, People's Republic of China
| | - Qi-Kui Chen
- Department of Gastroenterology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou, Guangdong, People's Republic of China
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Wang N, Xu ZW, Wang KH. Systematical analysis of cutaneous squamous cell carcinoma network of microRNAs, transcription factors, and target and host genes. Asian Pac J Cancer Prev 2015; 15:10355-61. [PMID: 25556475 DOI: 10.7314/apjcp.2014.15.23.10355] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND MicroRNAs (miRNAs) are small non-coding RNA molecules found in multicellular eukaryotes which are implicated in development of cancer, including cutaneous squamous cell carcinoma (cSCC). Expression is controlled by transcription factors (TFs) that bind to specific DNA sequences, thereby controlling the flow (or transcription) of genetic information from DNA to messenger RNA. Interactions result in biological signal control networks. MATERIALS AND METHODS Molecular components involved in cSCC were here assembled at abnormally expressed, related and global levels. Networks at these three levels were constructed with corresponding biological factors in term of interactions between miRNAs and target genes, TFs and miRNAs, and host genes and miRNAs. Up/down regulation or mutation of the factors were considered in the context of the regulation and significant patterns were extracted. RESULTS Participants of the networks were evaluated based on their expression and regulation of other factors. Sub-networks with two core TFs, TP53 and EIF2C2, as the centers are identified. These share self-adapt feedback regulation in which a mutual restraint exists. Up or down regulation of certain genes and miRNAs are discussed. Some, for example the expression of MMP13, were in line with expectation while others, including FGFR3, need further investigation of their unexpected behavior. CONCLUSIONS The present research suggests that dozens of components, miRNAs, TFs, target genes and host genes included, unite as networks through their regulation to function systematically in human cSCC. Networks built under the currently available sources provide critical signal controlling pathways and frequent patterns. Inappropriate controlling signal flow from abnormal expression of key TFs may push the system into an incontrollable situation and therefore contributes to cSCC development.
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Affiliation(s)
- Ning Wang
- Department of Computer Science and Technology, Jilin University, Changchun, China E-mail :
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Chen C, Liang Z, Huang W, Li X, Zhou F, Hu X, Han M, Ding X, Xiang S. Eps8 regulates cellular proliferation and migration of breast cancer. Int J Oncol 2014; 46:205-14. [PMID: 25333707 DOI: 10.3892/ijo.2014.2710] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 10/02/2014] [Indexed: 11/05/2022] Open
Abstract
The role of Eps8 in human breast cancer was studied, and we found that Eps8 was overexpressed in >60% of human breast cancer samples compared with adjacent normal breast tissues by immunohistochemical analysis. Eps8 was highly expressed in the highly invasive breast cancer cell line MDA-MB‑231 compared with the weakly invasive breast cancer cell lines MCF7 and MDA-MB‑468. MCF7 cell line stably expressing Eps8 was established by G418 screening, and the ectopic expression of Eps8 enhanced MCF7 breast cancer cell growth and survival as assessed by MTT analysis, cell viability and liquid colony formation, whereas the lentiviral expression of Eps8 shRNA in MDA-MB‑231 cells resulted in a significant reduction in cellular growth and proliferation in vitro and in vivo. Furthermore, Eps8 knockdown inhibited breast cancer cell migration in wound healing assays, decreased the number and size of EGF-induced filopodia and increased the sensitivity of breast cancer cells to cisplatin analyzed by MTT assays. Eps8 knockdown decreased the levels of phosphorylated extracellular signal-regulated protein kinase (ERK) and MMP9 but increased p53. Moreover, Eps8 knockdown suppressed a partial EMT-like transition and showed a significant increase in E-cadherin and decrease in N-cadherin and vimentin. These results suggest that Eps8 is overexpressed in human breast cancers, possibly by regulating ERK signaling, MMP9, p53 and EMT-like transition to affect breast cancer cell growth, migration and invasion. Therefore, Eps8 might represent a novel potential target in human breast cancer therapy.
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Affiliation(s)
- Cheng Chen
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, P.R. China
| | - Zhongheng Liang
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, P.R. China
| | - Wenhuan Huang
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, P.R. China
| | - Xinxin Li
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, P.R. China
| | - Fangliang Zhou
- College of Basic Medical Sciences, Hunan University of Chinese Medicine, Changsha, P.R. China
| | - Xiang Hu
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, P.R. China
| | - Mei Han
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, P.R. China
| | - Xiaofeng Ding
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, P.R. China
| | - Shuanglin Xiang
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, P.R. China
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Wang N, Xu Z, Wang K, Zhu M, Li Y. Construction and analysis of regulatory genetic networks in cervical cancer based on involved microRNAs, target genes, transcription factors and host genes. Oncol Lett 2014; 7:1279-1283. [PMID: 24944708 PMCID: PMC3961274 DOI: 10.3892/ol.2014.1814] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 12/23/2013] [Indexed: 12/21/2022] Open
Abstract
Over recent years, genes and microRNA (miRNA/miR) have been considered as key biological factors in human carcinogenesis. During cancer development, genes may act as multiple identities, including target genes of miRNA, transcription factors and host genes. The present study concentrated on the regulatory networks consisting of the biological factors involved in cervical cancer in order to investigate their features and affect on this specific pathology. Numerous raw data was collected and organized into purposeful structures, and adaptive procedures were defined for application to the prepared data. The networks were therefore built with the factors as basic components according to their interacting associations. The networks were constructed at three levels of interdependency, including a differentially-expressed network, a related network and a global network. Comparisons and analyses were made at a systematic level rather than from an isolated gene or miRNA. Critical hubs were extracted in the core networks and notable features were discussed, including self-adaption feedback regulation. The present study expounds the pathogenesis from a novel point of view and is proposed to provide inspiration for further investigation and therapy.
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Affiliation(s)
- Ning Wang
- Department of Computer Science and Technology, Jilin University, Changchun 130012, P.R. China ; Symbol Computation and Knowledge Engineer of Ministry of Education, Jilin University, Changchun 130012, P.R. China
| | - Zhiwen Xu
- Department of Computer Science and Technology, Jilin University, Changchun 130012, P.R. China ; Symbol Computation and Knowledge Engineer of Ministry of Education, Jilin University, Changchun 130012, P.R. China
| | - Kunhao Wang
- Department of Computer Science and Technology, Jilin University, Changchun 130012, P.R. China ; Symbol Computation and Knowledge Engineer of Ministry of Education, Jilin University, Changchun 130012, P.R. China
| | - Minghui Zhu
- Department of Computer Science and Technology, Jilin University, Changchun 130012, P.R. China ; Symbol Computation and Knowledge Engineer of Ministry of Education, Jilin University, Changchun 130012, P.R. China
| | - Yang Li
- Department of Computer Science and Technology, Jilin University, Changchun 130012, P.R. China ; Symbol Computation and Knowledge Engineer of Ministry of Education, Jilin University, Changchun 130012, P.R. China
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Eps8 controls dendritic spine density and synaptic plasticity through its actin-capping activity. EMBO J 2013; 32:1730-44. [PMID: 23685357 DOI: 10.1038/emboj.2013.107] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 04/15/2013] [Indexed: 12/13/2022] Open
Abstract
Actin-based remodelling underlies spine structural changes occurring during synaptic plasticity, the process that constantly reshapes the circuitry of the adult brain in response to external stimuli, leading to learning and memory formation. A positive correlation exists between spine shape and synaptic strength and, consistently, abnormalities in spine number and morphology have been described in a number of neurological disorders. In the present study, we demonstrate that the actin-regulating protein, Eps8, is recruited to the spine head during chemically induced long-term potentiation in culture and that inhibition of its actin-capping activity impairs spine enlargement and plasticity. Accordingly, mice lacking Eps8 display immature spines, which are unable to undergo potentiation, and are impaired in cognitive functions. Additionally, we found that reduction in the levels of Eps8 occurs in brains of patients affected by autism compared to controls. Our data reveal the key role of Eps8 actin-capping activity in spine morphogenesis and plasticity and indicate that reductions in actin-capping proteins may characterize forms of intellectual disabilities associated with spine defects.
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Wang L, Gu J, Peng YF. Prognostic factors of stage Ⅱa colon cancer. Shijie Huaren Xiaohua Zazhi 2012; 20:3816-3821. [DOI: 10.11569/wcjd.v20.i36.3816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the prognostic factors of stage Ⅱa (pT3N0M0) colon cancer.
METHODS: The demographic, clinical and laboratory data for 161 patients with stage Ⅱa colon cancer treated with curative surgery alone at Peking University Cancer Hospital from January 2004 to June 2008 were reviewed retrospectively. Eighty-four valid cases were selected in this study based on inclusive and exclusive criteria. The 3-year disease-free survival (DFS) was tested by univariate and multivariate analyses to identify prognostic factors.
RESULTS: The overall 3-year DFS for the selected 84 cases was 88.1%. The 3-year DFS for patients with elevated CEA levels was significantly lower than those with normal CEA levels (76.5% vs 95.8%, P = 0.007). Multivariate analysis demonstrated that CEA level (OR = 8.013, 95% CI 1.573-40.817, P = 0.012), expression of Ki67 (OR = 3.298, 95% CI 0.799-13.610, P = 0.099), male gender (OR = 7.212, 95% CI 1.293-40.237, P = 0.024) and anemia (OR = 6.461, 95% CI 1.537-27.151, P = 0.011) were independent prognostic factors for the 3-year DFS. Stratified analysis revealed that elevated level of CEA combined with high expression of Ki67 was associated with a poorer prognosis (3-year DFS = 70%).
CONCLUSION: Elevated preoperative serum level of CEA and high expression of Ki67 in cancer tissue are predictors of poor prognosis for stage Ⅱa colon cancer. More intensive adjuvant treatment should be considered in patients with such high risk factors.
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