1
|
Chen X, Huang Z, Chen R. Microrna-136 promotes proliferation and invasion ingastric cancer cells through Pten/Akt/P-Akt signaling pathway. Oncol Lett 2018. [PMID: 29541241 DOI: 10.3892/ol.2018.7848] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Gastric cancer is the fourth most common cancer and the second most frequent cause of cancer-associated mortality in the world. Previous studies have revealed that expression levels of microRNAs (miRNAs) are associated with the initiation and progression of several types of cancer, including gastric cancer. Previous studies have demonstrated that the abnormal expression of miRNA-136 may serve a function in the progression of several types of human cancer. However, the expression pattern of miR-136, its functions and underlying molecular mechanisms in gastric cancer remain unresolved. In the present study, it was revealed that the expression of miR-136 was aberrantly up regulated in gastric cancer tissues and cell lines. The suppression of miR-136 was able to inhibit proliferation and invasion in gastric cancer cell lines. Furthermore, phosphatase and tensin homolog (PTEN) was identified as a direct target gene of miR-136 in gastric cancer. PTEN was under expressed in gastric cancer tissues compared with non-tumor gastric tissues, and PTEN expression was negatively correlated with miR-136 expression. Furthermore, PTEN overexpression mimics the effects of miR-136 knockdown on gastric cancer cells. Additionally, miR-136 under expression decreased phospho-(p) AKT expression, but did not affect AKT expression in gastric cancer cells. In conclusion, the data of the present study suggest that miR-136 acts as an oncogene in gastric cancer via regulation of the PTEN/AKT/p-AKT signaling pathway and may potentially serve as a novel therapeutic target for the treatment of gastric cancer.
Collapse
Affiliation(s)
- Xuyan Chen
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Zhiming Huang
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Renpin Chen
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| |
Collapse
|
2
|
Zheng HC, Liu LL. FHIT down-regulation was inversely linked to aggressive behaviors and adverse prognosis of gastric cancer: a meta- and bioinformatics analysis. Oncotarget 2017; 8:108261-108273. [PMID: 29296239 PMCID: PMC5746141 DOI: 10.18632/oncotarget.22369] [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: 08/01/2017] [Accepted: 10/03/2017] [Indexed: 11/25/2022] Open
Abstract
FHIT (fragile histine triad) acts as diadenosine P1, P3-bis (5'-adenosyl)-triphosphate adenylohydrolase involved in purine metabolism, and induces apoptosis as a tumor suppressor. We performed a systematic meta- and bioinformatics analysis through multiple online databases up to March 14, 2017. The down-regulated FHIT expression was found in gastric cancer, compared with normal mucosa and dysplasia (p < 0.05). FHIT expression was negatively with depth of invasion, lymph node metastasis, distant metastasis, TNM staging and dedifferentiation of gastric cancer (p < 0.05). A positive association between FHIT expression and favorable overall survival was found in patients with gastric cancer (p < 0.05). According to Kaplan-Meier plotter, we found that a higher FHIT expression was negatively correlated with overall and progression-free survival rates of all cancer patients, even stratified by aggressive parameters (p < 0.05). These findings indicated that FHIT expression might be employed as a potential marker to indicate gastric carcinogenesis and subsequent progression, even prognosis.
Collapse
Affiliation(s)
- Hua-Chuan Zheng
- Department of Experimental Oncology and Animal Center, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Li-Li Liu
- Department of Pathology, Harbin Medical University-Daqing, Daqing 163319, China
| |
Collapse
|
3
|
Shivakumar M, Lee Y, Bang L, Garg T, Sohn KA, Kim D. Identification of epigenetic interactions between miRNA and DNA methylation associated with gene expression as potential prognostic markers in bladder cancer. BMC Med Genomics 2017; 10:30. [PMID: 28589857 PMCID: PMC5461531 DOI: 10.1186/s12920-017-0269-y] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Background One of the fundamental challenges in cancer is to detect the regulators of gene expression changes during cancer progression. Through transcriptional silencing of critical cancer-related genes, epigenetic change such as DNA methylation plays a crucial role in cancer. In addition, miRNA, another major component of epigenome, is also a regulator at the post-transcriptional levels that modulate transcriptome changes. However, a mechanistic role of synergistic interactions between DNA methylation and miRNA as epigenetic regulators on transcriptomic changes and its association with clinical outcomes such as survival have remained largely unexplored in cancer. Methods In this study, we propose an integrative framework to identify epigenetic interactions between methylation and miRNA associated with transcriptomic changes. To test the utility of the proposed framework, the bladder cancer data set, including DNA methylation, miRNA expression, and gene expression data, from The Cancer Genome Atlas (TCGA) was analyzed for this study. Results First, we found 120 genes associated with interactions between the two epigenomic components. Then, 11 significant epigenetic interactions between miRNA and methylation, which target E2F3, CCND1, UTP6, CDADC1, SLC35E3, METRNL, TPCN2, NACC2, VGLL4, and PTEN, were found to be associated with survival. To this end, exploration of TCGA bladder cancer data identified epigenetic interactions that are associated with survival as potential prognostic markers in bladder cancer. Conclusions Given the importance and prevalence of these interactions of epigenetic events in bladder cancer it is timely to understand further how different epigenetic components interact and influence each other. Electronic supplementary material The online version of this article (doi:10.1186/s12920-017-0269-y) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Manu Shivakumar
- Biomedical & Translational Informatics Institute, Geisinger Health System, Danville, PA, USA
| | - Younghee Lee
- Department of Biomedical Informatics, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Lisa Bang
- Biomedical & Translational Informatics Institute, Geisinger Health System, Danville, PA, USA
| | - Tullika Garg
- Mowad Urology Department, Geisinger Health System, Danville, PA, USA
| | - Kyung-Ah Sohn
- Department of Software and Computer Engineering, Ajou University, Suwon, South Korea.
| | - Dokyoon Kim
- Biomedical & Translational Informatics Institute, Geisinger Health System, Danville, PA, USA. .,The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, USA.
| |
Collapse
|
4
|
Hu S, Yang N, Chen M, Guo J, Xian L. [Effects of tumor suppressor gene TCF21 on the proliferation, migration and apoptosis of A549 cells]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2014; 17:302-7. [PMID: 24758904 PMCID: PMC6000019 DOI: 10.3779/j.issn.1009-3419.2014.04.03] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
背景与目的 转录因子21(transcription factor 21, TCF21)是新近发现的抑癌基因,其在多种肿瘤中具有抑癌功能,本研究旨在探讨TCF21基因对人肺癌A549细胞增殖、迁移和凋亡的影响。 方法 利用慢病毒转染技术在肺癌A549细胞中高表达TCF21基因,以荧光定量PCR、Western blot分析目的基因的表达,并采用Transwell、MTT法、流式细胞术检测TCF21高表达对A549迁移、增殖、凋亡的影响。 结果 成功在肺癌细胞株A549中高表达TCF21,且高表达TCF21后A549的细胞生长和迁移能力受抑制、凋亡率增高。 结论 抑癌基因TCF21可抑制A549细胞的增殖和迁移、诱导凋亡。
Collapse
Affiliation(s)
- Song Hu
- Department of Cardiothoracic Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Nuo Yang
- Department of Cardiothoracic Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Mingwu Chen
- Department of Cardiothoracic Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Jianji Guo
- Department of Cardiothoracic Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Lei Xian
- Department of Cardiothoracic Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| |
Collapse
|
5
|
Abnormal FHIT protein expression may be correlated with poor prognosis in gastric cancer: a meta-analysis. Tumour Biol 2014; 35:6815-21. [PMID: 24729090 DOI: 10.1007/s13277-014-1936-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Accepted: 04/03/2014] [Indexed: 01/11/2023] Open
Abstract
Our current meta-analysis is aimed to investigate the relationships between fragile histidine triad (FHIT) protein expression and prognosis in gastric cancer patients. We searched MEDLINE (1966 ~ 2013), the Cochrane Library Database (Issue 12, 2013), EMBASE (1980 ~ 2013), CINAHL (1982 ~ 2013), Web of Science (1945 ~ 2013), and the Chinese Biomedical Database (CBM) (1982 ~ 2013) without any language restrictions. The meta-analysis was conducted using the STATA 12.0 software. Crude hazard ratios (HR) with its 95 % confidence interval (95 % CI) were calculated. Eight clinical cohort studies with a total of 1,361 gastric cancer patients were involved in our meta-analysis. Our results revealed that FHIT-negative patients exhibited a shorter overall survival (OS) time than FHIT-positive patients (HR = 1.23, 95 % CI = 1.01 ~ 1.44, P < 0.001). Ethnicity-stratified analysis demonstrated that FHIT-negative patients have significantly poorer prognosis than FHIT-positive patients among both Caucasians and Asians (all P < 0.05). In conclusion, our meta-analysis provides evidences that negative expression of FHIT protein may be correlated with poor prognosis in patients with gastric cancer. Thus, FHIT expression level may be utilized as an independent prognostic marker for gastric cancer.
Collapse
|
6
|
Occipital anaplastic oligodendroglioma with multiple organ metastases after a short clinical course: a case report and literature review. Diagn Pathol 2014; 9:17. [PMID: 24447608 PMCID: PMC3943380 DOI: 10.1186/1746-1596-9-17] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Accepted: 12/31/2013] [Indexed: 12/31/2022] Open
Abstract
Background It is generally believed that malignant gliomas never metastasize outside the central nervous system (CNS). However, the notion that oligodendrogliomas (OGDs) cells cannot spread outside CNS is being challenged. Methods We described in detail the clinical story of one patient with anaplastic OGD, which metastasized to lymph nodes, bone marrowand bones Genetic analyses included detection of 1p and 19q chromosomal arms, methylation status of MGMT promoter, and PTEN exon mutations. A search of worldwide literature was conducted for reports of metastatic OGDs using NCBI-PubMed, with the keywords “extracranial”, “extraneural”, “oligodendroglioma”, “oligodendrogliomas”, “metastatic”, “metastasis”, and “metastases”, in different combinations. Results An open biopsy of the infiltrated bones in our patient revealed that malignant cells had replaced the patient’s marrow. Moreover, the diagnosis of multiple-organ metastases of anaplastic OGD was confirmed based on immunohistochemical staining. Genetic analyses showed that the tumors originated from previously resected brain lesions. None of the lesions had 1p and 19q deletions, but hypermethylation of MGMT promoter, and the G → A transversion at codon 234 of PTEN exon 2 were detected. Literatures review yielded 60 reports of metastatic OGDs from 1951 to the present, which with our patient makes 61 cases. Concerning these 61 patients, there were 110 infiltrated sites correlated closely with primary OGDs. The most frequent metastatic sites were bone and bone marrow (n = 47; 42.7%), lymph nodes (n = 22; 20.0%), liver (n = 7; 6.4%), scalp (n = 6; 5.5%), lung (n = 6; 5.5%), pleura (n = 4; 3.6%), chest wall (n = 3; 2.7%), iliopsoas muscle (n = 2; 1.8%), soft tissue (n = 2; 1.8%), and parotid gland (n = 2; 1.8%). Conclusions Extracranial metastases in anaplastic OGD are very rare but they do occur; bone and bone marrow may be the most common sites. Detection of certain molecular markers such as deletion of 1p and 19q chromosomal arms, hypermethylation of MGMT promoter, and characteristic PTEN exon mutations may help differentiate subtypes which are more prone to extracranial metastases. Virtual slides The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/8749838611478560.
Collapse
|
7
|
Ali A, Saluja SS, Hajela K, Mishra PK, Rizvi MA. Mutational and expressional analyses of PTEN
gene in colorectal cancer from Northern India. Mol Carcinog 2013; 53 Suppl 1:E45-52. [DOI: 10.1002/mc.22001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2012] [Revised: 11/24/2012] [Accepted: 12/17/2012] [Indexed: 12/12/2022]
Affiliation(s)
- Asgar Ali
- Genome Biology Laboratory; Department of Biosciences; Jamia Millia Islamia New Delhi India
| | - Sundeep S. Saluja
- Department of Gastrointestinal Surgery; G. B. Pant Hospital; New Delhi India
| | - Krishnan Hajela
- School of Life Sciences; Devi Ahilya Vishwavidyalaya; Indore India
| | - Pramod K. Mishra
- Department of Gastrointestinal Surgery; G. B. Pant Hospital; New Delhi India
| | - Moshahid A. Rizvi
- Genome Biology Laboratory; Department of Biosciences; Jamia Millia Islamia New Delhi India
| |
Collapse
|
8
|
Zhu X, Qin X, Fei M, Hou W, Greshock J, Bachman KE, Kang J, Qin CY. Loss and reduced expression of PTEN correlate with advanced-stage gastric carcinoma. Exp Ther Med 2012; 5:57-64. [PMID: 23251242 PMCID: PMC3524019 DOI: 10.3892/etm.2012.749] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Accepted: 09/14/2012] [Indexed: 12/14/2022] Open
Abstract
Phosphatase and tensin homolog (PTEN) is a tumor suppressor involved in multiple cell processes. To investigate the role of PTEN in the development of gastric carcinoma, we determined the expression pattern of PTEN in primary gastric carcinoma and in paired adjacent non-neoplastic tissue. We also determined the correlation of PTEN expression with clinicopathological characteristics and patient survival. Overall, 159 gastric carcinomas and 151 paired adjacent non-neoplastic tissues were used in the present study. PTEN expression was determined using tissue microarrays and immunohistochemistry. The clinical sensitivity and specificity of PTEN expression were calculated using receiver operator characteristic curves. Results showed that the loss of cytoplasmic PTEN was significantly more frequent in carcinoma tissue compared with adjacent non-neoplastic tissue (62 vs. 5%, respectively; P<0.0001). PTEN expression was markedly downregulated in carcinoma tissues compared with adjacent non-neoplastic tissues. The loss of cytoplasmic PTEN expression was positively correlated with histological stage (P=0.016). The loss of nuclear or total PTEN, and downregulation of total PTEN expression, was significantly different between American Joint Committee on Cancer tumors of stage I and stages II-IV. A low cytoplasmic or total PTEN expression showed high clinical sensitivity and specificity for gastric carcinoma. However, PTEN expression was not significantly associated with overall or 3-year survival rates. The findings of the present study indicated that PTEN expression may be a molecular diagnostic marker for gastric cancer. Thus, the loss or reduced expression of PTEN potentially correlate with advanced stages of gastric carcinoma.
Collapse
Affiliation(s)
- Xuehua Zhu
- Shanghai Key Laboratory of Signaling and Disease Research, School of Life Science and Technology, Tongji University
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Yang X, Takano Y, Zheng HC. The pathobiological features of gastrointestinal cancers (Review). Oncol Lett 2012; 3:961-969. [PMID: 22783373 DOI: 10.3892/ol.2012.628] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Accepted: 12/16/2011] [Indexed: 01/05/2023] Open
Abstract
Gastrointestinal adenocarcinoma (GIA) is a common malignant disease worldwide. Its tumorigenesis and progression is a multistage process with the involvement of a multifactorial etiology. Knowledge regarding altered expression of these genes during carcinogenesis may not only provide information about the molecular events during the initiation and progression of cancer, but may also result in the discovery of biological markers for the evaluation of cancer diagnosis and prognosis. In this review, we assessed molecular markers of pathogenesis, invasion, metastasis and prognosis, such as tumor suppressor and metastasis suppressor genes, and angiogenesis, cell adhesion, cell mobility, ER stress, mucin production, threonine protein kinase and REG family protein expression, by the establishment of tissue microarray (TMA) of GIA and immunohistochemistry (IHC) by intermittent microwave irradiation and in situ hybridization (ISH). Finally, we characterized the pathobiological features of Lauren's and WHO subtypes. It was found that the aberrant and cell-specific expression of these molecules is important in the malignant transformation of gastrointestinal epithelium and subsequent progression. These molecules also underlie the histogenic mechanisms of gastric carcinoma according to Lauren's and WHO classification. The combination of TMA, IHC and ISH may be widely applied to screen for molecular markers in GIA.
Collapse
Affiliation(s)
- Xue Yang
- Department of Biochemistry and Molecular Biology and Institute of Pathology and Pathophysiology, College of Basic Medicine, China Medical University, Shenyang, P.R. China
| | | | | |
Collapse
|
10
|
Yang Z, Lv NH. Role of PTEN in gastric carcinogenesis. Shijie Huaren Xiaohua Zazhi 2011; 19:608-613. [DOI: 10.11569/wcjd.v19.i6.608] [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
The PTEN (phosphatase and tensin homolog deleted on chromosome ten) gene is another important tumor suppressor gene found after p53 gene, and its encoded protein is involved in cellular differentiation, reproduction and apoptosis, as well as cellular adhesion and mobility, and genetic stability that is often lost in various human cancers. Recently, some studies have indicated that down-regulation of PTEN protein expression due to genetic or epigenetic changes, like mutation, loss of heterozygosity (LOH) and promoter hypermethylation, participates in gastric carcinogenesis. These studies could help us understand the pathogenesis of gastric cancer (GC), and show us a new molecular marker that could be used to evaluate TNM stage, histological type, or differentiation grade of GC biopsies, and GC treatment. In this article, we will focus on the functions of PTEN, the mechanisms of its inactivation in GC, and the important role of its inactivation in the development and prognosis of GC.
Collapse
|
11
|
Jang KS, Song YS, Jang SH, Min KW, Na W, Jang SM, Jun YJ, Lee KH, Choi D, Paik SS. Clinicopathological significance of nuclear PTEN expression in colorectal adenocarcinoma. Histopathology 2010; 56:229-39. [DOI: 10.1111/j.1365-2559.2009.03468.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
12
|
Bornschein J, Weigt J, Selgrad M, Malfertheiner P. Molecular aspects in the diagnosis of gastric cancer. ACTA ACUST UNITED AC 2009; 3:585-96. [PMID: 23495987 DOI: 10.1517/17530050902862175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Gastric cancer (GC) represents the second most common cause of cancer-related death worldwide. The prognosis remains poor, with limited treatment options. A better understanding of the initiation and progression of GC would enable the development of general screening strategies and individualized treatment modalities. OBJECTIVE The assessment of tools and molecular markers for the early detection and diagnosis of GC. METHODS Human clinical studies published within the past 5 years are reviewed. Also, significant previous data on markers in clinical use or on relevant animal or cell culture experiments are considered. RESULTS/CONCLUSION Serum-based screening strategies are not ready for routine application but represent an opportunity for the identification of individuals at high risk with the need for primary gastroscopy and further surveillance, which would ultimately improve survival and prognosis of GC. Infection with Helicobacter pylori represents the principal risk factor for gastric carcinogenesis. Bacterial virulence and host genetic factors contribute to individual susceptibility. Key molecular alterations in gastric carcinogenesis are related to intra- and extracellular cascades that regulate cell proliferation, tumor invasion and metastastic spread. For the development of effective prevention and treatment modalities, it is essential to unravel the basic mechanisms of gastric carcinogenesis.
Collapse
Affiliation(s)
- Jan Bornschein
- Otto-von-Guericke-University of Magdeburg, Department of Gastroenterology, Hepatology and Infectious Diseases, Leipziger Str. 44, D-39120 Magdeburg, Germany +0049 391 6713100 ; +0049 391 6713105 ;
| | | | | | | |
Collapse
|
13
|
Zheng HC, Li XH, Hara T, Masuda S, Yang XH, Guan YF, Takano Y. Mixed-type gastric carcinomas exhibit more aggressive features and indicate the histogenesis of carcinomas. Virchows Arch 2008; 452:525-34. [PMID: 18266006 PMCID: PMC2329735 DOI: 10.1007/s00428-007-0572-7] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2007] [Revised: 12/27/2007] [Accepted: 12/27/2007] [Indexed: 12/14/2022]
Abstract
To investigate the pathobiological behaviors of gastric mixed-type (MT) carcinomas and gastric carcinogenesis, the clinicopathological characteristics of MT carcinomas were analyzed and compared with intestinal-type (IT) and diffuse-type (DT) carcinomas. The expression of Ki-67, caspase-3, p53, fragile histine triad (FHIT), maspin, extracellular matrix metalloproteinase inducer (EMMPRIN), vascular growth factor (VEGF), MUC-2, 4, 5AC and 6, CD44, E-cadherin, β-catenin, and phosphorylated glycogen synthase kinase 3β-ser9 (P-GSK3β-ser9) was examined on tissue microarrays using immunohistochemistry. It was found that MT carcinomas exhibited large size, deep invasion, frequent local invasion, and lymph node metastasis in comparison with IT and DT carcinomas (p < 0.05). All the markers except MUC-5AC showed higher expression in IT than DT carcinomas (p < 0.05). The expression of maspin, EMMPRIN, VEGF, MUC-4, and membrane E-cadherin was stronger in MT intestinal than diffuse component (p < 0.05). Immunoreactivities to Ki-67, EMMPRIN, and VEGF were weaker in IT carcinoma than in the MT intestinal portion (p < 0.05), while the opposite was true for CD44, MUC-2, and MUC-6 (p < 0.05). The MT diffuse component displayed a higher expression of FHIT, VEGF, and P-GSK3β-ser9 than DT carcinoma (p < 0.05). The accumulative survival rate of the IT carcinoma patients was higher than the other types (p < 0.05). The invasive depth, venous invasion, lymph node, peritoneal or liver metastasis, and Lauren's classification were independent prognostic factors for gastric carcinomas (p < 0.05). These findings suggested that MT carcinomas were also indicated to be more aggressive than IT and DT carcinomas. Significant differences were observed in the proliferation, apoptosis, angiogenesis, mucin secretion, and cell adhesion between IT and DT carcinomas, whereas only a few of these characteristics showed differences between the MT intestinal and diffuse parts, thus suggesting that both the MT components might originate from the stem cells with similar genetic traits, but follow different histogenic pathways.
Collapse
Affiliation(s)
- Hua-chuan Zheng
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, China Medical University, Shenyang, China.
| | | | | | | | | | | | | |
Collapse
|
14
|
Zheng HC, Takahashi H, Li XH, Hara T, Masuda S, Guan YF, Takano Y. Downregulated parafibromin expression is a promising marker for pathogenesis, invasion, metastasis and prognosis of gastric carcinomas. Virchows Arch 2007; 452:147-55. [PMID: 18080135 PMCID: PMC2233709 DOI: 10.1007/s00428-007-0551-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2007] [Revised: 11/09/2007] [Accepted: 11/10/2007] [Indexed: 11/21/2022]
Abstract
Parafibromin is a protein encoded by the hyperparathyroidism 2 oncosuppressor gene and its downregulated expression is involved in pathogenesis of parathyroid carcinomas. To clarify the roles of parafibromin expression in tumourigenesis and progression of gastric carcinomas, it was examined by immunohistochemistry (IHC) on tissue microarray containing gastric carcinomas (n = 508), adenomas (n = 45) and gastritis (n = 49) with a comparison of its expression with clinicopathological parametres of carcinomas. Gastric carcinoma cell lines (MKN28, AGS, MKN45, KATO-III and HGC-27) were studied for parafibromin expression by IHC and western blot. Parafibromin expression was localised in the nucleus of gastric epithelial cells, adenoma, carcinoma cells and cell lines. Its expression was gradually decreased from gastritis to gastric carcinoma, through gastric adenomas (p < 0.05) and inversely correlated with tumour size, depth of invasion, lymphatic invasion, lymph node metastasis and Union Internationale Contre le Cancer (UICC) staging (p < 0.05) but not with sex or venous invasion (p > 0.05). Parafibromin was strongly expressed in older carcinoma patients compared with younger ones (p < 0.05). There was stronger positivity of parafibromin in intestinal-type than diffuse-type carcinomas (p < 0.05). Univariate analysis indicated cumulative survival rate of patients with positive parafibromin expression to be higher than without its expression (p < 0.05). Multivariate analysis showed that age, tumour size, depth of invasion, lymphatic invasion, lymph node metastasis, UICC staging and Lauren’s classification but not sex, venous invasion or parafibromin expression were independent prognostic factors for carcinomas(p < 0.05). Downregulated parafibromin expression possibly contributed to pathogenesis, growth, invasion and metastasis of gastric carcinomas. It was considered as a promising marker to indicate the aggressive behaviours and prognosis of gastric carcinomas.
Collapse
Affiliation(s)
- Hua-Chuan Zheng
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, China Medical University, Shenyang, China.
| | | | | | | | | | | | | |
Collapse
|
15
|
Zheng HC, Tsuneyama K, Takahashi H, Miwa S, Sugiyama T, Popivanova BK, Fujii C, Nomoto K, Mukaida N, Takano Y. Aberrant Pim-3 expression is involved in gastric adenoma-adenocarcinoma sequence and cancer progression. J Cancer Res Clin Oncol 2007; 134:481-8. [PMID: 17876606 DOI: 10.1007/s00432-007-0310-1] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2007] [Accepted: 08/28/2007] [Indexed: 12/14/2022]
Abstract
PURPOSE Pim-3, a member of the proto-oncogene Pim family with serine/threonine kinase activity was aberrantly expressed in cancerous lesions of endoderm-derived organs such as liver, pancreas, and colon. The aim of this study was to clarify the role of Pim-3 expression in the tumorigenesis and the development of gastric carcinomas. METHODS Pim-3 expression was immunohistochemically examined on the tissue microarrays containing primary (n = 285) and metastastic (n = 37) sites of gastric carcinomas, in comparison with adenoma (n = 48) and non-cancerous mucosa (n = 84). It was also compared with the clinicopathological parameters of gastric carcinomas. RESULTS Pim-3 expression was enhanced in adenoma (64.6%) and metastasis sites of gastric carcinoma (73.0%), to a lesser degree in primary sites of gastric carcinoma (39.3%) when compared to non-cancerous mucosa (13.1%, p < 0.0001). Pim-3 expression levels were higher in intestinal-type than diffuse-type gastric carcinoma (p = 0.018). Pim-3 expression was closely correlated with sex (p = 0.047), lymphatic (p = 0.019) and venous invasion (p = 0.014). Pim-3 expression was correlated significantly with vascular endothelial growth factor (VEGF, p = 0.009) and extracellular matrix metalloproteinase inducer (EMMPRIN, p = 0.032), both of which are presumed to be involved in neovascularization, a crucial step for metastasis. On the contrary, phosphatase and tensin homology deleted from human chromosome 10 (Pten) negative gastric carcinomas exhibited higher Pim-3 expression than Pten positive ones (p = 0.042). There was no relationship between Pim-3 expression and MVD in gastric carcinomas (p = 0.715). Furthermore, patients with Pim-3 positive gastric cancer, showed a lower cumulative survival rate than those with Pim-3 negative gastric cancer (p = 0.014) and Pim-3 positive was also identified as an independent prognostic factor for gastric carcinoma patients (p = 0.006). CONCLUSIONS Aberrant Pim-3 expression was involved in gastric adenoma-adenocarcinoma sequence and subsequent invasion and metastasis process in gastric cancer. Moreover, Pim-3 may be employed to predict the prognosis of gastric cancer patients. Distinct Pim-3 expression underlies the molecular mechanisms for the differentiation of intestinal-type and diffuse-type carcinomas.
Collapse
Affiliation(s)
- Hua-Chuan Zheng
- Department of Diagnostic Pathology, Graduate School of Medical and Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|