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Wang N, Chang LL. The potential function of IKKα in gastric precancerous lesion via mediating Maspin. Tissue Cell 2020; 65:101349. [PMID: 32746986 DOI: 10.1016/j.tice.2020.101349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 02/26/2020] [Accepted: 03/01/2020] [Indexed: 01/15/2023]
Abstract
OBJECTIVE To know the potential role of IKKα (an NF-κB noncanonical pathway) in gastric precancerous lesion via mediating Maspin. METHODS Gastric cancer, precancerous lesion and control tissues (chronic non-atrophic gastritis) were collected for determining the expression of IKKα and Maspin by immunohistochemistry. Thereafter, gastric precancerous models were established and divided into the Control group, Model group and Model + shIKKα group. All rats were subjected to observe the pathological changes and ultramicro structure of the gastric mucosa by HE staining or electron microscope, and to measure the serum levels of inflammatory cytokines by ELISA, the expression of apoptosis-related proteins by immunohistochemistry, as well as the expression of IKKα and Maspin by quantitative real-time PCR and Western blotting. RESULTS Precancerous lesion and gastric cancer tissues manifested significant upregulation of IKKα positive expression, concomitant with downregulation of the positive expression of Maspin, and these changes were more evident in the gastric cancer tissues. In comparison with the Control group, rats in the Model group had significant increases in serum levels of TNF-α, IL-1β, IL-6 and COX-2, with up-regulations of Bcl-2, CyclinD1, IKKα and p-IKKα, and down-regulations of Bax, Caspase-3 and Maspin. shIKKα treatment attenuate inflammation and apoptosis in gastric precancerous lesion (GPL) rat, with the downregulation of IKKα and p-IKKα, and upregulation of Maspin. CONCLUSION Inhibiting IKKα, via upregulating Maspin, can mitigate the inflammation and promote cell apoptosis in precancerous rats, thereby delaying the development of the precancerous lesions.
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Affiliation(s)
- Ning Wang
- Department of Gastroenterology No.1 Ward, ShiJiaZhuang No. 1 Hospital, Shijiazhuang 050011, China
| | - Li-Li Chang
- Department of Gastroenterology No.1 Ward, ShiJiaZhuang No. 1 Hospital, Shijiazhuang 050011, China.
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Baghel K, Kazmi HR, Chandra A, Raj S, Srivastava RN. Significance of methylation status of MASPIN gene and its protein expression in prognosis of gallbladder cancer. Asia Pac J Clin Oncol 2019; 15:e120-e125. [DOI: 10.1111/ajco.13129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 12/30/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Kavita Baghel
- Department of Surgical GastroenterologyKing George's Medical University Lucknow India
| | - Hasan Raza Kazmi
- Department of Surgical GastroenterologyKing George's Medical University Lucknow India
- Department of Biomedical SciencesPennVetUniversity of Pennsylvania Philadelphia PA USA
| | - Abhijit Chandra
- Department of Surgical GastroenterologyKing George's Medical University Lucknow India
| | - Saloni Raj
- Department of Surgical GastroenterologyKing George's Medical University Lucknow India
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Sun D, Sun W, Zhou R, Dong A, Zhang H. Relationship between DAPK methylation and gene inactivation in papillary thyroid carcinoma. EUR J INFLAMM 2018. [DOI: 10.1177/2058739218778710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
To investigate the relationship between the methylation of death-associated protein kinase (DAPK) promoter and gene inactivation in papillary thyroid carcinoma, the technique of methylation-specific polymerase chain reaction (PCR (MSP)) was applied to detect the methylation status of DAPK gene promoter in 70 cases of papillary thyroid carcinoma (study group) and in 50 cases of corresponding adjacent tissues (control group). Immunohistochemical method was used to detect the protein expression; besides, the relationship of DAPK methylation and gene inactivation with pathological factors of papillary thyroid cancer was analyzed. The methylation rate of DAPK was 16% (8/50) in the control group and 71.4% (50/70) in the study group with the difference being statistically significant (χ2 = 19.724, P < 0.01). The methylation of DAPK gene promoter was not associated with age, sex, tumor size, TNM stage, and thyroid capsular infiltration in the study group with papillary thyroid carcinoma ( P > 0.05), but was associated with lymph node metastasis ( P < 0.05). Spearman’s rank correlation analysis showed that the methylation of DAPK promoter was negatively correlated with the expression of DAPK (r = −0.793, P < 0.01). The methylation of CpG island in the promoter region of DAPK gene can lead to gene inactivation and may be involved in the occurrence of papillary thyroid carcinoma.
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Affiliation(s)
- Dawei Sun
- Department of Thyroid Surgery, The Affiliated Hospital of Qingdao University, Qingdao, PR China
| | - Wenhai Sun
- Department of Thyroid Surgery, The Affiliated Hospital of Qingdao University, Qingdao, PR China
| | - Rui Zhou
- School of Public Health Qingdao university, Qingdao, PR China 266000
| | - Anbin Dong
- Department of Thyroid Surgery, The Affiliated Hospital of Qingdao University, Qingdao, PR China
| | - Hongmei Zhang
- Department of Thyroid Surgery, The Affiliated Hospital of Qingdao University, Qingdao, PR China
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Avadhani V, Hacihasanoglu E, Memis B, Pehlivanoglu B, Hanley KZ, Krishnamurti U, Krasinskas AM, Osunkoya AO, Daniels LM, Freedman AA, Goodman M, Adsay V, Reid MD. Cytologic predictors of malignancy in bile duct brushings: a multi-reviewer analysis of 60 cases. Mod Pathol 2017; 30:1273-1286. [PMID: 28664934 DOI: 10.1038/modpathol.2017.51] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 03/15/2017] [Accepted: 04/19/2017] [Indexed: 12/15/2022]
Abstract
Diagnosing malignancy in bile duct brushings is highly challenging. Seven reviewers of variable backgrounds and levels of participation in bile duct brushing sign out blindly reviewed 60 specimens (30 malignant with histologic confirmation and 30 benign (15 stented) with resection or ≥18 months of uneventful follow-up), testing the utility of 14 malignant characteristics. Eleven characteristics were statistically significantly associated with malignancy including 3-dimensional clusters (63% in malignant vs 3% in benign, odds ratio 50, P=0.0003), pleomorphism (62 vs 3, odds ratio 48, P=0.0004), 2-cell population (60% vs 3, odds ratio 44, P=0.0005), chromatin pattern (hypo/hyperchromasia) changes (70% vs 7%, odds ratio 33, P<0.0001), high nuclear-to-cytoplasmic ratio (48 vs 3%, odds ratio 27, P=0.0023), cytoplasmic vacuoles (43 vs 3%, odds ratio 22, P=0.0042), nuclear irregularity (70 vs 10%, odds ratio 21, P<0.0001), cellular discohesion (38 vs 3%, odds ratio 18, P=0.0082), hypercellularity (23% vs 0), nuclear molding (20% vs 0) and prominent nucleoli (21% vs 0). Necrosis and infiltrating inflammation were not helpful in identifying malignancy ('neutrophil cannibalism' was noted in 43% malignant); 21/30 (70%) malignant brushings had ≥3 malignant characteristics, while 23 (77%) benign brushings had none. Of 20 brushings with ≥4 characteristics, 1(5%) proved benign and showed detachment atypia, a close malignant mimicker in brushings. Identification of 3 characteristics maximized the combined sensitivity (70%), specificity (97%) and accuracy (83%), but sensitivity dropped as number of characteristics increased. Identification of 3/11 characteristics (3-dimensional clusters, pleomorphism, high nuclear-to-cytoplasmic ratio, nuclear irregularity, hypercellularity, discohesion, chromatin changes, vacuoles, prominent nucleoli, molding and 2-cell population) improves pathologists' overall performance greatly.
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Affiliation(s)
- Vaidehi Avadhani
- Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
| | - Ezgi Hacihasanoglu
- Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
| | - Bahar Memis
- Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
| | - Burcin Pehlivanoglu
- Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
| | - Krisztina Z Hanley
- Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
| | - Uma Krishnamurti
- Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
| | - Alyssa M Krasinskas
- Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
| | - Adeboye O Osunkoya
- Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
| | - Lauren M Daniels
- Department of Epidemiology, Emory University Rollins School of Public Health, Atlanta, GA, USA
| | - Alexa A Freedman
- Department of Epidemiology, Emory University Rollins School of Public Health, Atlanta, GA, USA
| | - Michael Goodman
- Department of Epidemiology, Emory University Rollins School of Public Health, Atlanta, GA, USA
| | - Volkan Adsay
- Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
| | - Michelle D Reid
- Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
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Kanzawa M, Sanuki T, Onodera M, Fujikura K, Itoh T, Zen Y. Double immunostaining for maspin and p53 on cell blocks increases the diagnostic value of biliary brushing cytology. Pathol Int 2017; 67:91-98. [DOI: 10.1111/pin.12505] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 12/16/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Maki Kanzawa
- Department of Diagnostic Pathology; Kobe University Graduate School of Medicine; Kobe Japan
| | - Tsuyoshi Sanuki
- Department of Gastroenterology; Kitaharima Medical Center; Ono Japan
| | - Manabu Onodera
- Department of Gastroenterology; NTT East Sapporo Hospital; Sapporo Japan
| | - Kohei Fujikura
- Department of Diagnostic Pathology; Kobe University Graduate School of Medicine; Kobe Japan
| | - Tomoo Itoh
- Department of Diagnostic Pathology; Kobe University Graduate School of Medicine; Kobe Japan
| | - Yoh Zen
- Department of Diagnostic Pathology; Kobe University Graduate School of Medicine; Kobe Japan
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Seifert L, Deutsch M, Alothman S, Alqunaibit D, Werba G, Pansari M, Pergamo M, Ochi A, Torres-Hernandez A, Levie E, Tippens D, Greco SH, Tiwari S, Ly NNG, Eisenthal A, van Heerden E, Avanzi A, Barilla R, Zambirinis CP, Rendon M, Daley D, Pachter HL, Hajdu C, Miller G. Dectin-1 Regulates Hepatic Fibrosis and Hepatocarcinogenesis by Suppressing TLR4 Signaling Pathways. Cell Rep 2015; 13:1909-1921. [PMID: 26655905 PMCID: PMC4681001 DOI: 10.1016/j.celrep.2015.10.058] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 08/13/2015] [Accepted: 10/19/2015] [Indexed: 02/07/2023] Open
Abstract
Dectin-1 is a C-type lectin receptor critical in anti-fungal immunity, but Dectin-1 has not been linked to regulation of sterile inflammation or oncogenesis. We found that Dectin-1 expression is upregulated in hepatic fibrosis and liver cancer. However, Dectin-1 deletion exacerbates liver fibro-inflammatory disease and accelerates hepatocarcinogenesis. Mechanistically, we found that Dectin-1 protects against chronic liver disease by suppressing TLR4 signaling in hepatic inflammatory and stellate cells. Accordingly, Dectin-1(-/-) mice exhibited augmented cytokine production and reduced survival in lipopolysaccharide (LPS)-mediated sepsis, whereas Dectin-1 activation was protective. We showed that Dectin-1 inhibits TLR4 signaling by mitigating TLR4 and CD14 expression, which are regulated by Dectin-1-dependent macrophage colony stimulating factor (M-CSF) expression. Our study suggests that Dectin-1 is an attractive target for experimental therapeutics in hepatic fibrosis and neoplastic transformation. More broadly, our work deciphers critical cross-talk between pattern recognition receptors and implicates a role for Dectin-1 in suppression of sterile inflammation, inflammation-induced oncogenesis, and LPS-mediated sepsis.
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Affiliation(s)
- Lena Seifert
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Michael Deutsch
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Sara Alothman
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Dalia Alqunaibit
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Gregor Werba
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Mridul Pansari
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Matthew Pergamo
- S. Arthur Localio Laboratory, Department of Pathology, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Atsuo Ochi
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Alejandro Torres-Hernandez
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Elliot Levie
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Daniel Tippens
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Stephanie H. Greco
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Shaun Tiwari
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Nancy Ngoc Giao Ly
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Andrew Eisenthal
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Eliza van Heerden
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Antonina Avanzi
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Rocky Barilla
- S. Arthur Localio Laboratory, Department of Pathology, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Constantinos P. Zambirinis
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Mauricio Rendon
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Donnele Daley
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - H. Leon Pachter
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - Cristina Hajdu
- S. Arthur Localio Laboratory, Department of Pathology, New York University School of Medicine, 550 First Avenue, New York, NY 10016
| | - George Miller
- S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, NY 10016
- S. Arthur Localio Laboratory, Department of Cell Biology New York University School of Medicine, 550 First Avenue, New York, NY 10016
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Singh TD, Gupta S, Shrivastav BR, Tiwari PK. Epigenetic profiling of gallbladder cancer and gall stone diseases: Evaluation of role of tumour associated genes. Gene 2015; 576:743-52. [PMID: 26456195 DOI: 10.1016/j.gene.2015.10.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 09/29/2015] [Accepted: 10/01/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND As on today, the global mortality rate of gallbladder cancer is still very high. Both genetic and epigenetic alterations play pivotal roles in the development of cancer. We selected seven tumour associated genes, implicated in other cancers, to assess their methylation status in gallbladder cancer and gallstone diseases. AIM OF STUDY To study the promoter methylation of certain tumour associated genes in the molecular pathogenesis of gallbladder cancer and gall stone diseases. MATERIALS AND METHODS Methylation specific PCR for seven tumour associated genes, viz., MASPIN, 14-3-3 sigma gene, THBS1, FLNC, HLTF, COX-2 and SOCS1, was performed in 50 gallbladder cancer (GBC), 30 gall stone diseases (GSD) and their respective adjacent control tissues. Semi-quantitative PCR and immunohistochemistry was carried out to check the expression level. Student's t-test was carried out to compare the differences in the methylation and expression patterns between cases and control tissues. RESULTS We observed methylation of CpG islands in seven of the studied markers, but, the frequency of methylation was found varying among different samples. Of them, 14-33 sigma showed methylation in 45 GBC (90%; p=0.0001) and 25 GSD (86.66%; p=0.001), MASPIN in 35 GBC (70%; p=0.0008) and 18 GSD (51.43%; p=0.040), FLNC in 16 GBC (32%; p=0.0044) and 9 GSD (25.71%; p=ns), THBS1 in 26 GBC (52%; p=0.0009) and 10 GSD (28.57%; p=0.0505), HLTF in 8 GBC (16%; p=ns) and 2 GSD (5.71%; p=ns), COX2 in 10 GBC (20%; p=ns) and 6 GSD (17.14%; p=ns) and SOCS-1 in 3 GBC samples only (6%; p=ns), but not in GSD. Semi-quantitative PCR revealed down regulation in MASPIN, 14-3-3 sigma, THBS1, HLTF, COX2 and SOCS1 in advanced gallbladder cases. Immunohistochemistry further confirmed the down-regulation of SOCS1 in GBC. CONCLUSION The present study infers that accumulation of epigenetic alterations increases poor prognosis of GBC patients. Out of seven genes, MASPIN and THBS1 play key epigenetic role in GBC, but not in GSD. The reason for downregulation of SOCS1 only in GBC, and unaltered expression of 14-3-3 sigma protein in all the GBC and GSD tissue samples is not clear. Further investigation on the expression pattern of these genes in GBC cell lines may elucidate their likely functional role in in association with gallbladder cancer.
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Affiliation(s)
- Tekcham Dinesh Singh
- Centre for Genomics, Molecular and Human Genetics, Jiwaji University, Gwalior 474 011 MP, India
| | - Sanjeev Gupta
- Department of Pathology, Cancer Hospital and Research Institute, Gwalior 474 007 MP, India
| | - Braj Raj Shrivastav
- Department of Surgical Oncology, Cancer Hospital and Research Institute, Gwalior 474 007 MP, India
| | - Pramod Kumar Tiwari
- Centre for Genomics, Molecular and Human Genetics, Jiwaji University, Gwalior 474 011 MP, India.
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Promoter Hypomethylation of Maspin Inhibits Migration and Invasion of Extravillous Trophoblast Cells during Placentation. PLoS One 2015; 10:e0135359. [PMID: 26263377 PMCID: PMC4532475 DOI: 10.1371/journal.pone.0135359] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Accepted: 07/21/2015] [Indexed: 11/28/2022] Open
Abstract
Objective Extravillous trophoblast (EVT) cells invade the endometrium and the maternal spiral arterioles during the first trimester. Mammary Serine Protease Inhibitor (Maspin, SERPINB5) plays a putative role in regulating the invasive activity of cytotrophoblasts. The maspin gene is silenced in various cancers by an epigenetic mechanism that involves aberrant cytosine methylation. We investigated the effect of the methylation status of the maspin promoter on the maspin expression and the aggressiveness of EVT cells. Methods Western blotting was used to detect the maspin protein expression in EVT cells upon hypoxia. The proliferative ability, the apoptosis rate and the migration and invasiveness were measured with Cell Counting Kit-8 assay, Flow Cytometry technology and Transwell methods. Subsequently, we treated cells with recombinant maspin protein. The methylation degree of maspin promoter region upon hypoxia/ decitabine was detected by bisulfite sequencing PCR and methylation-specific PCR. Finally, we explored the effects of decitabine on maspin protein expression and the aggressiveness of EVT cells. Results Hypoxia effectively increased maspin protein expression in EVT cells and significantly inhibited their aggressiveness. The addition of recombinant maspin protein inhibited this aggressiveness. Decitabine reduced the methylation in the maspin promoter region and effectively increased the maspin protein expression, which significantly weakened the migration and invasiveness of EVT cells. Discussion The methylation status of the maspin promoter is an important factor that affects the migration and invasion of EVT cells during early pregnancy. A decrease in the methylation status can inhibit the migration and invasion of EVT cells to affect placentation and can result in the ischemia and hypoxia of placenta.
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Chen L, Huang K, Himmelfarb EA, Zhai J, Lai JP, Lin F, Wang HL. Diagnostic value of maspin in distinguishing adenocarcinoma from benign biliary epithelium on endoscopic bile duct biopsy. Hum Pathol 2015; 46:1647-54. [PMID: 26362203 DOI: 10.1016/j.humpath.2015.07.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 07/09/2015] [Accepted: 07/10/2015] [Indexed: 02/08/2023]
Abstract
Histopathologic distinction between benign and malignant epithelia on endoscopic bile duct biopsy can be extremely challenging due to small sample size, crush artifact, and a propensity for marked inflammatory and reactive changes after stent placement. Our previous studies have shown that the insulin-like growth factor II mRNA-binding protein 3, S100P, and the von Hippel-Lindau gene product (pVHL) can help the distinction. This study analyzed 134 endoscopic bile duct biopsy specimens (adenocarcinoma 45, atypical 31, and benign 58) by immunohistochemistry for the expression of maspin, a serine protease inhibitor. The results demonstrated that (1) maspin expression was more frequently detected in malignant than in benign biopsies; (2) malignant biopsies frequently showed diffuse, strong/intermediate, and combined nuclear/cytoplasmic staining patterns for maspin, which were much less commonly seen in benign biopsies; (3) the malignant staining patterns for maspin observed in atypical biopsies were consistent with follow-up data showing that 67% of these patients were subsequently diagnosed with adenocarcinoma; (4) a maspin+/S100P+/pVHL- staining profile was seen in 75% of malignant biopsies but in none of the benign cases. These observations demonstrate that maspin is a useful addition to the diagnostic immunohistochemical panel (S100P, pVHL, and insulin-like growth factor II mRNA-binding protein 3) to help distinguish malignant from benign epithelia on challenging bile duct biopsies.
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Affiliation(s)
- Lihong Chen
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095; Department of Pathology, School of Basic Medical Sciences of Fujian Medical University, Fuzhou, Fujian 350004, China.
| | - Kevin Huang
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095
| | | | - Jing Zhai
- Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Jin-Ping Lai
- Department of Pathology, Saint Louis University School of Medicine, St Louis, MO 63104
| | - Fan Lin
- Department of Laboratory Medicine, Geisinger Medical Center, Danville, PA 17822
| | - Hanlin L Wang
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095.
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Keira Y, Takasawa A, Murata M, Nojima M, Takasawa K, Ogino J, Higashiura Y, Sasaki A, Kimura Y, Mizuguchi T, Tanaka S, Hirata K, Sawada N, Hasegawa T. An immunohistochemical marker panel including claudin-18, maspin, and p53 improves diagnostic accuracy of bile duct neoplasms in surgical and presurgical biopsy specimens. Virchows Arch 2014; 466:265-77. [PMID: 25503275 DOI: 10.1007/s00428-014-1705-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 10/06/2014] [Accepted: 12/02/2014] [Indexed: 12/14/2022]
Abstract
Biliary tract cancers have an extremely poor outcome, and specific diagnostic markers and effective treatments are needed urgently. In this study, we assessed the capacity of panel of immunohistochemical markers including claudin-18, maspin, and p53 to distinguish biliary tract carcinoma and biliary intraepithelial neoplasia (BilIN) from non-neoplastic epithelium. We performed a retrospective study of 66 biliary tract cancer specimens and 63 specimens with non-neoplastic lesions. Of the surgical specimens, 96.7 % with adenocarcinoma/BilIN were detected as neoplastic, and all 63 specimens histologically diagnosed as non-neoplastic lesion were detected as non-neoplastic with high sensitivity (91.1 %) and specificity (100 %). Of presurgical endobiliary forceps biopsy specimens, all with adenocarcinoma/BilIN and only 1 of the 19 with a non-neoplastic lesion were distinguished as neoplastic with high sensitivity (100 %) and specificity (94.7 %). Moreover, this panel provided good separation of neoplasm from malignancy-undetermined atypical epithelium (18/21, 85.7 %). This panel achieves a more reliable distinction of biliary tract cancers and BilINs from non-neoplastic epithelia in both surgical and biopsy specimens than immunohistochemical analysis with single antibodies and is useful in supporting a diagnosis of adenocarcinoma and BilIN.
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Affiliation(s)
- Yoshiko Keira
- Departments of Surgical Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
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Shi QQ, Zuo GW, Feng ZQ, Zhao LC, Luo L, You ZM, Li DY, Xia J, Li J, Chen DL. Effect of Trichostatin A on Anti HepG2 Liver Carcinoma Cells: Inhibition of HDAC Activity and Activation of Wnt/β-Catenin Signaling. Asian Pac J Cancer Prev 2014; 15:7849-55. [DOI: 10.7314/apjcp.2014.15.18.7849] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Bodenstine TM, Seftor REB, Khalkhali-Ellis Z, Seftor EA, Pemberton PA, Hendrix MJC. Maspin: molecular mechanisms and therapeutic implications. Cancer Metastasis Rev 2013; 31:529-51. [PMID: 22752408 DOI: 10.1007/s10555-012-9361-0] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Maspin, a non-inhibitory member of the serine protease inhibitor superfamily, has been characterized as a tumor suppressor gene in multiple cancer types. Among the established anti-tumor effects of Maspin are the inhibition of cancer cell invasion, attachment to extracellular matrices, increased sensitivity to apoptosis, and inhibition of angiogenesis. However, while significant experimental data support the role of Maspin as a tumor suppressor, clinical data regarding the prognostic implications of Maspin expression have led to conflicting results. This highlights the need for a better understanding of the context dependencies of Maspin in normal biology and how these are perturbed in the context of cancer. In this review, we outline the regulation and roles of Maspin in normal and developmental biology while discussing novel evidence and emerging theories related to its functions in cancer. We provide insight into the immense therapeutic potential of Maspin and the challenges related to its successful clinical translation.
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Affiliation(s)
- Thomas M Bodenstine
- Children's Hospital of Chicago Research Center, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, 225 E. Chicago Avenue, Box 222, Chicago, IL 60611, USA
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Shi X, Wu Y, Liu H, Gong X, Du H, Li Y, Zhao J, Chen P, Tang G, Qiao F. Effect of epigenetic modification of maspin on extravillous trophoblastic function. ACTA ACUST UNITED AC 2012; 32:879-882. [DOI: 10.1007/s11596-012-1051-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Indexed: 11/30/2022]
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14
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Gao S, Andreasen PA. DNA Methylation Profiles of Protease Nexin 1 (SERPINE2) Gene in Human Cell Lines. Chin J Cancer Res 2011; 23:92-8. [PMID: 23482841 DOI: 10.1007/s11670-011-0092-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Accepted: 03/11/2011] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE To investigated whether epigenetic mechanisms contribute to the variable expression of variable protease nexin1(PN-1) encoded by the SERPINE2 gene in different cell types. METHODS Working with 5 human cell lines, we determined the CpG methylation status within two CpG islands in the SERPINE2 gene by bisulphate sequencing and the PN-1 mRNA level by Q-RT PCR. RESULTS A CpG island spanning the transcription initiation site showed little methylation in 3 of the cell lines and substantial methylation in 2 of the cell lines. A CpG island covering the translation starting site showed full methylation in all investigated cell lines. Methylation within the CpG island was not randomly distributed, but showed accumulation at specific sites. However, we were not able to distinguish any patterns which related the methylation frequency to the gene expression level. Inhibition of CpG methylation with 5-aza-2'-deoxycytidine led to a several fold increase in PN-1 mRNA levels, but based on the results on CpG methylation in the CpG island spanning the transcript, the effect is most likely indirect. CONCLUSION We have carefully mapped the CpG methylation pattern in two CpG islands in the 5' part of the SERPINE2 gene without finding any obvious inverse correlation between methylation frequency and expression level.
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Affiliation(s)
- Shan Gao
- Danish-Chinese Centre for Proteases and Cancer, Department of Molecular Biology, University of Aarhus, 8000 Aarhus C, Denmark
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15
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Chou RH, Lin SC, Wen HC, Wu CW, Chang WSW. Epigenetic activation of human kallikrein 13 enhances malignancy of lung adenocarcinoma by promoting N-cadherin expression and laminin degradation. Biochem Biophys Res Commun 2011; 409:442-7. [DOI: 10.1016/j.bbrc.2011.05.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2011] [Accepted: 05/03/2011] [Indexed: 01/16/2023]
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16
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Aberrant maspin expression is involved in early carcinogenesis of gallbladder cancer. Tumour Biol 2010; 31:471-6. [DOI: 10.1007/s13277-010-0056-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2010] [Accepted: 05/14/2010] [Indexed: 10/19/2022] Open
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17
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Orlando FA, Brown KD. Unraveling breast cancer heterogeneity through transcriptomic and epigenomic analysis. Ann Surg Oncol 2009; 16:2270-9. [PMID: 19452229 DOI: 10.1245/s10434-009-0500-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2008] [Revised: 03/31/2009] [Accepted: 04/19/2009] [Indexed: 12/31/2022]
Abstract
Breast cancer diversity is histologically evident as various proliferative benign lesions, in situ carcinomas, and invasive carcinomas that may develop into distant metastases. Breast tumor molecular subtypes have been defined by genome-wide expression microarray technology and reveal associations between genetic alterations and the malignant phenotype. Early work has been conducted to use subtype-specific biomarkers to elucidate targeted treatment options early in the course of breast cancer progression. Additionally, DNA methylation is an epigenetic modification that contributes to breast cancer progression by transcriptionally silencing certain tumor suppressor genes. Among the genes characterized as targets for silencing are well-established tumor suppressors such as RASSF1A, RARB, SFN, and TGM2. Measuring elevated gene copy number and aberrant gene promoter methylation can further facilitate characterization of breast tumor molecular subtype; however, profiling of breast tumors based on epigenetic criteria has yet to be established. Epigenomic analysis has been investigated for clinical applicability, and it has great promise when used in combination with minimally invasive techniques for both diagnostic and prognostic purposes.
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Affiliation(s)
- Frank A Orlando
- Department of Surgery, University of Florida College of Medicine and UF Shands Cancer Center, Gainesville, FL, USA.
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18
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Horswill MA, Narayan M, Warejcka DJ, Cirillo LA, Twining SS. Epigenetic silencing of maspin expression occurs early in the conversion of keratocytes to fibroblasts. Exp Eye Res 2008; 86:586-600. [PMID: 18291368 DOI: 10.1016/j.exer.2008.01.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2007] [Revised: 12/10/2007] [Accepted: 01/03/2008] [Indexed: 10/22/2022]
Abstract
Maspin, a 42 kDa non-classical serpin (serine protease inhibitor) that controls cell migration and invasion, is mainly expressed by epithelial-derived cells but is also expressed in corneal stromal keratocytes. Upon culture of stromal keratocytes in the presence of FBS, maspin is down-regulated to nearly undetectable levels by passage two. DNA methylation is one of several processes that controls gene expression during cell differentiation, development, genetic imprinting, and carcinogenesis but has not been studied in corneal stromal cells. The purpose of this study was to determine whether DNA methylation of the maspin promoter and histone H3 dimethylation is involved in the mechanism of down-regulation of maspin synthesis in human corneal stromal fibroblasts and myofibroblasts. Human donor corneal stroma cells were immediately placed into serum-free defined medium or cultured in the presence of FBS and passed into serum-free medium or medium containing FBS or FGF-2 to induce the fibroblast phenotype or TGF-beta1 for the myofibroblast phenotype. These cell types are found in wounded corneas. The cells were used to prepare RNA for semi-quantitative or quantitative RT-PCR or to extract protein for Western analysis. In addition, P4 FBS cultured fibroblasts were treated with the DNA demethylating agent, 5-aza-2'-deoxycytidine (5-Aza-dC), and the histone deacetylase inhibitor, trichostatin A (TSA). Cells with and without treatment were harvested and assayed for DNA methylation using sodium bisulfite sequencing. The methylation state of histone H3 associated with the maspin gene in the P4 fibroblast cells was determined using a ChIP assay. Freshly harvested corneal stromal cells expressed maspin but upon phenotypic differentiation, maspin mRNA and protein were dramatically down-regulated. Sodium bisulfite sequencing revealed that the maspin promoter in the freshly isolated stromal keratocytes was hypomethylated while both the P0 stromal cells and the P1 cells cultured in the presence of serum-free defined medium, FGF-2 and TGF-beta1 were hypermethylated. Down-regulation of maspin synthesis was also associated with histone H3 dimethylation at lysine 9. Both maspin mRNA and protein were re-expressed at low levels with 5-Aza-dC but not TSA treatment. Addition of TSA to 5-Aza-dC treated cells did not increase maspin expression. Treatment with 5-Aza-dC did not significantly alter demethylation of the maspin promoter but did demethylate histone H3. These results show maspin promoter hypermethylation and histone methylation occur with down-regulation of maspin synthesis in corneal stromal cells and suggest regulation of genes upon conversion of keratocytes to wound healing fibroblasts can involve promoter and histone methylation.
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Affiliation(s)
- Mark A Horswill
- Department of Biochemistry, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
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19
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Cao D, Zhang Q, Wu LSF, Salaria SN, Winter JW, Hruban RH, Goggins MS, Abbruzzese JL, Maitra A, Ho L. Prognostic significance of maspin in pancreatic ductal adenocarcinoma: tissue microarray analysis of 223 surgically resected cases. Mod Pathol 2007; 20:570-8. [PMID: 17396143 DOI: 10.1038/modpathol.3800772] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Maspin (SERPINB5), a serine proteinase inhibitor, was first identified as a potential tumor suppressor on the basis of its differential expression between normal mammary epithelial cells and human breast carcinoma cell lines. Recent studies have shown that maspin might be a prognostic tumor marker. Pancreatic ductal adenocarcinoma acquires maspin expression through hypomethylation of the maspin promoter. However, no study has investigated the prognostic significance of maspin expression in pancreatic ductal adenocarcinomas. In this study, we investigated maspin protein expression in a large series of 223 surgically resected pancreatic ductal adenocarcinomas using immunohistochemical staining and high throughput tissue microarrays. Maspin expression was correlated with postoperative survival and other clinicopathologic factors. Maspin was detected in 209 of these 223 (94% cases) pancreatic ductal adenocarcinomas including 39 (18% cases) focal (5-50% tumor cells) and 170 (76% cases) diffuse (>50% tumor cells). Fourteen (or 6% cases) pancreatic ductal adenocarcinomas did not show maspin expression by immunohistochemical staining (<5% tumor cells). Normal ductal epithelium is not labeled with maspin. Overexpression of maspin in pancreatic ductal adenocarcinoma is associated with worse postoperative survival especially in patients whose tumors exhibit diffuse expression of maspin. After adjusting other clinicopathologic factors, maspin expression remains to be an independent adverse prognosticator for postoperative survival. Maspin expression is not associated with patient age, gender, tumor size, tumor pathologic stage, lymph node status, and vascular invasion or perineural invasion. Nuclear labeling of maspin is associated with better tumor differentiation although this staining pattern is not associated with a better prognosis. In addition, maspin overexpression is also observed in 48% low-grade (grades 1a and 1b) pancreatic intraepithelial neoplasias (PanINs) and 78% high-grade (grades 2 and 3) PanINs, suggesting that maspin upregulation occurs early during the multi-step progression model of pancreatic ductal adenocarcinoma.
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Affiliation(s)
- Dengfeng Cao
- Department of Pathology, The Johns Hopkins Medical Institutions, Baltimore, MD 21231, USA.
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20
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Druesne-Pecollo N, Chaumontet C, Pagniez A, Vaugelade P, Bruneau A, Thomas M, Cherbuy C, Duée PH, Martel P. In vivo treatment by diallyl disulfide increases histone acetylation in rat colonocytes. Biochem Biophys Res Commun 2007; 354:140-7. [PMID: 17210128 DOI: 10.1016/j.bbrc.2006.12.158] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2007] [Accepted: 12/21/2006] [Indexed: 01/19/2023]
Abstract
Diallyl disulfide (DADS) is an organosulfur compound from garlic which exhibits various anticarcinogenic properties including inhibition of tumor cell proliferation. DADS antiproliferative effects were previously associated with an increase in histone acetylation in two human tumor colon cell lines, suggesting that DADS-induced histone hyperacetylation could be one of the mechanisms involved in its protective properties on colon carcinogenesis. The effects of DADS on histone H4 and H3 acetylation levels were investigated in vivo in colonocytes isolated from non-tumoral rat. Administrated by intracaecal perfusion or gavage, DADS increases histone H4 and H3 acetylation in colonocytes. Moreover, data generated using cDNA expression arrays suggest that DADS could modulate the expression of a subset of genes. These results suggest the involvement of histone acetylation in modulation of gene expression by DADS in normal rat colonocytes, which might play a role in its biological effects as well as in its anticarcinogenic properties in vivo.
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Affiliation(s)
- Nathalie Druesne-Pecollo
- Laboratoire de Nutrition et Sécurité Alimentaire, INRA, Domaine de Vilvert, 78352 Jouy-en-Josas cedex, France.
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21
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Zhu J. DNA methylation and hepatocellular carcinoma. ACTA ACUST UNITED AC 2007; 13:265-73. [PMID: 16858536 DOI: 10.1007/s00534-005-1054-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2005] [Accepted: 09/01/2005] [Indexed: 02/07/2023]
Abstract
The epigenetic makeup of organisms forms a link between the genetic information (DNA sequence) and the gene expression (and therefore phenotype). It dictates the memory for the gene expression pattern that, in turn, specifies cell identity. DNA methylation is the most studied epigenetic mechanism, aberration of which prevails in cancer, resulting in an altered pattern of gene expression and, therefore, cancerous features, including genetic abnormalities: mutations and genome instability. Altered methylation in cancer occurs in two directions. A marked reduction in the overall level of DNA methylation has been linked to the activation of transcription/transposition and the overexpression of protooncogenes. In parallel, there is a common occurrence of a hypermethylated status of the promoter cytosine (CpG) island in genes involved in the negative control of cell growth and in the maintenance of genomic stability; therefore causing transcription silencing. It is thus necessary and important to establish a comprehensive profile of DNA methylation changes in the promoter CpG island in many genes, both for better understanding of the underlying mechanisms and for diagnostic purposes in cancer clinics. Hepatocellular carcinoma is one of the most threatening malignancies in East Asia and Africa. In this short review, I briefly outline our current understanding of DNA methylation in cancer in general, emphasizing its recent progress in hepatocellular carcinoma.
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Affiliation(s)
- Jingde Zhu
- Cancer Epigenetics and Gene Therapy Group, The State-Key Laboratory for Oncogenes and Related Genes, Shanghai Cancer Institute, Shanghai Jiaotong University, LN 2200/25, Xietu Road, Shanghai, 200032, China
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22
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Abstract
Maspin (mammary serine protease inhibitor) was identified in 1994 by subtractive hybridization analysis of normal mammary tissue and breast cancer cell lines. Subsequently, emerging evidence portrays maspin as a multifaceted protein, interacting with diverse group of intercellular and extracellular proteins, regulating cell adhesion, motility, apoptosis, and angiogenesis and critically involved in mammary gland development. The tissue-specific expression of maspin is epigenetically controlled, and aberrant methylation of maspin promoter is closely associated with maspin gene silencing. Identification of new tissue sites expressing maspin and novel maspin-binding partners has expanded the horizon for maspin research and promises maspin-based therapeutic approaches for combating cancer. This perspective briefly outlines the past and present strides in deciphering this unique molecule and speculates on new frontiers in maspin research and prospects of maspin as a diagnostic/prognostic indicator in cancer.
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Affiliation(s)
- Zhila Khalkhali-Ellis
- Children's Memorial Research Center, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60614-3394, USA.
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23
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Lu Q, Qiu X, Hu N, Wen H, Su Y, Richardson BC. Epigenetics, disease, and therapeutic interventions. Ageing Res Rev 2006; 5:449-67. [PMID: 16965942 DOI: 10.1016/j.arr.2006.07.001] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2006] [Revised: 07/20/2006] [Accepted: 07/24/2006] [Indexed: 12/13/2022]
Abstract
Heritable changes in gene expression that do not involve coding sequence modifications are referred to as "epigenetic". Epigenetic mechanisms principally include DNA methylation and a variety of histone modifications, of which the best characterized is acetylation. DNA hypermethylation and histone hypoacetylation are hallmarks of gene silencing, while DNA hypomethylation and acetylated histones promote active transcription. Aberrant DNA methylation and histone acetylation have been linked to a number of age related disorders including cancer, autoimmune disorders and others. Since epigenetic alterations are reversible, modifying epigenetic marks contributing to disease development may provide an approach to designing new therapies. Herein we review the role of epigenetic changes in disease development, and recent advances in the therapeutic modification of epigenetic marks.
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Affiliation(s)
- Q Lu
- Department of Dermatology and Epigenetic Research Center, Second Xiangya Hospital, Central South University, Hunan 410011, PR China
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Wilson AS, Power BE, Molloy PL. DNA hypomethylation and human diseases. Biochim Biophys Acta Rev Cancer 2006; 1775:138-62. [PMID: 17045745 DOI: 10.1016/j.bbcan.2006.08.007] [Citation(s) in RCA: 324] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2006] [Revised: 08/24/2006] [Accepted: 08/27/2006] [Indexed: 12/14/2022]
Abstract
Changes in human DNA methylation patterns are an important feature of cancer development and progression and a potential role in other conditions such as atherosclerosis and autoimmune diseases (e.g., multiple sclerosis and lupus) is being recognised. The cancer genome is frequently characterised by hypermethylation of specific genes concurrently with an overall decrease in the level of 5 methyl cytosine. This hypomethylation of the genome largely affects the intergenic and intronic regions of the DNA, particularly repeat sequences and transposable elements, and is believed to result in chromosomal instability and increased mutation events. This review examines our understanding of the patterns of cancer-associated hypomethylation, and how recent advances in understanding of chromatin biology may help elucidate the mechanisms underlying repeat sequence demethylation. It also considers how global demethylation of repeat sequences including transposable elements and the site-specific hypomethylation of certain genes might contribute to the deleterious effects that ultimately result in the initiation and progression of cancer and other diseases. The use of hypomethylation of interspersed repeat sequences and genes as potential biomarkers in the early detection of tumors and their prognostic use in monitoring disease progression are also examined.
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Affiliation(s)
- Ann S Wilson
- Preventative Health National Research Flagship, North Ryde, NSW, Australia
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25
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Abstract
Maspin, a mammary serine protease inhibitor, was originally reported as a tumor suppressor gene in breast cancer. The purpose of the present study was to examine maspin expression and evaluate its clinicopathological significance in endometrial cancer. We examined maspin expression immunohistochemically in 41 cases with endometrioid adenocarcinoma. DNA methylation status at the maspin promoter region was determined by the methylation-specific polymerase chain reaction method. Aberrant maspin expression was observed in 27 (66%) of 41 endometrioid adenocarcinomas but not in normal endometrial glands. Maspin immunoreactivity of the tumor cells varied in incidence and density among tumors. Positive staining was correlated significantly with the presence of squamous differentiation (presence vs absence = 11/11 [100%] vs 16/30 [53%], P < 0.05), and nuclear subcellular localization of maspin protein was also significantly associated with squamous differentiation (nuclear positive vs nuclear negative = 6/11 [54%] vs 2/30 [6.7%], P < 0.05). An inverse correlation between their immunoreactivity and methylation status was observed (P < 0.01). Three of the four cell lines established from endometrioid adenocarcinomas overexpressed maspin mRNA and its protein product. In a maspin-negative cell line, maspin expression was induced by treatment with 5-aza-2'-deoxycytidine, a DNA demethylating agent. There was no significant correlation between maspin expression and any clinicopathlogical data. These findings suggest that maspin induced by DNA demethylation at the promoter region may contribute to squamous differentiation of tumor cells in endometrioid adenocarcinomas.
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Affiliation(s)
- Shinya Murai
- Department of Obstetrics and Gynecology, School of Medicine, Iwate Medical University, Uchimaru 19-1, Morioka, Iwate 020-8505, Japan
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26
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Maesawa C, Ogasawara S, Yashima-Abo A, Kimura T, Kotani K, Masuda S, Nagata Y, Iwaya T, Suzuki K, Oyake T, Akiyama Y, Kawamura H, Masuda T. Aberrant maspin expression in gallbladder epithelium is associated with intestinal metaplasia in patients with cholelithiasis. J Clin Pathol 2006; 59:328-30. [PMID: 16505288 PMCID: PMC1860347 DOI: 10.1136/jcp.2005.027284] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
OBJECTIVE Aberrant expression of maspin protein related to DNA hypomethylation in the promoter region is frequently observed in gallbladder carcinomas, whereas the non-tumorous gallbladder epithelium is maspin negative. We investigated maspin expression in non-tumorous gallbladder epithelium in patients with cholelithiasis. METHODS An immunohistochemical study of maspin expression was performed in 69 patients with cholelithiasis and 30 patients with gastric cancer without cholelithiasis. RESULTS Immunoreactivity for maspin was observed in focal and patchy regions of the gallbladder epithelium. Positive immunoreactivity for maspin was significantly associated with the presence of intestinal metaplasia in patients with cholelithiasis (p<0.05). CONCLUSION The high incidence of aberrant maspin expression in both intestinal metaplasia and carcinoma of the gallbladder supports the assumption that intestinal metaplasia of the gallbladder may predispose to gallbladder carcinoma.
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Affiliation(s)
- C Maesawa
- Department of Pathology, Iwate Medical University School of Medicine, Uchimaru 19-1, 020-8505 Morioka, Japan.
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