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Ma M, Lv Y, Zhang K, Zhou L. RASFF1A inhibits the epithelial-mesenchymal transition of lens epithelial cells induced by TGFβ through regulating HDAC6. Tissue Cell 2024; 87:102325. [PMID: 38394972 DOI: 10.1016/j.tice.2024.102325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 01/16/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024]
Abstract
To explore the role of Ras-association domain family 1 A (RASSF1A) in TGFβ2-induced changes of lens epithelial cells (LECs) behavior. The human LEC line SRA01/04 cells were treated with TGFβ2 in the presence or absence of RASSF1A and histone deacetylase 6 (HDAC6). qRT-PCR and western blot were performed to analysis mRNA and proteins expression. Cell proliferation was evaluated using MTT assay and colony formation assay. Transwell and scratch-wound healing assays were conducted to detected cell migration ability. RASSF1A was downregulated in TGFβ2-induced SRA01/04 cells. RASSF1A overexpression inhibited the cell viability, colony formation and migration abilities of SRA01/04 cells induced by TGFβ2. Overexpression of RASSF1A suppressed TGFβ2-induced EMT of SRA01/04 cells, which was manifested as inhibition of EMT-related proteins α-SMA, Vimentin, Snail and Fn expression. Moreover, RASSF1A down-regulated the expression of HDAC6. Importantly, HDAC6 reversed the effects of RASSF1A on SRA01/04 cells. These findings indicate that RASSF1A prevented TGFβ2-induced proliferation, migration, and EMT of LECs by regulating HDAC6 expression, suggesting that RASSF1A holds promise as a potential target for cataracts treatment.
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Affiliation(s)
- Mingda Ma
- Department of Ophthalmology, Ningbo No.2 Hospital, Ningbo, Zhejiang 315010, China
| | - Yunkai Lv
- Department of Ophthalmology, Ningbo No.2 Hospital, Ningbo, Zhejiang 315010, China.
| | - Kun Zhang
- Department of Ophthalmology, Ningbo No.2 Hospital, Ningbo, Zhejiang 315010, China
| | - Lina Zhou
- Department of Ophthalmology, Yuyao Maternity And Child Health Care Hospital, Yuyao, Zhejiang 315400, China
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Liu J, Bian T, She B, Liu L, Sun H, Zhang Q, Zhu J, Zhang J, Liu Y. Evaluating the comprehensive diagnosis efficiency of lung cancer, including measurement of SHOX2 and RASSF1A gene methylation. BMC Cancer 2024; 24:282. [PMID: 38429660 PMCID: PMC10908052 DOI: 10.1186/s12885-024-12022-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 02/19/2024] [Indexed: 03/03/2024] Open
Abstract
Methylation of the promoters of SHOX2 and RASSF1A (LungMe®) exhibits promise as a potential molecular biomarker for diagnosing lung cancer. This study sought to assess the aberrant methylation of SHOX2 and RASSF1A in broncho-exfoliated cells (BEC) and compare it with conventional cytology, histology examination, immunohistochemistry, and serum tumor markers to evaluate the overall diagnostic efficiency for lung cancer. This study recruited 240 patients, including 185 malignant cases and 55 benign cases. In our observation, we noted a slight reduction in the detection sensitivity, however, the ΔCt method exhibited a significant enhancement in specificity when compared to Ct judgment. Consequently, the ΔCt method proves to be a more appropriate approach for interpreting methylation results. The diagnostic sensitivity of cytology and histology was in ranged from 20.0%-35.1% and 42.9%-80%, respectively, while the positive detection rate of LungMe® methylation ranged from 70.0% to 100%. Additionally, our findings indicate a higher prevalence of SHOX2( +) among patients exhibiting medium and high expression of Ki67 (P < 0.01), as opposed to those with low expression of Ki67, but RASSF1A methylation did not show this phenomenon (P = 0.35). Furthermore, CEA, SCCA, and CYFRA21-1 showed positive detection rates of 48.8%, 26.2%, and 55.8%, respectively. Finally, we present a comprehensive lung cancer diagnostic work-up, including LumgMe® methylation. The combined analysis of SHOX2 and RASSF1A methylation serves as a powerful complement and extension to conventional methods, enhancing the accuracy of a lung cancer diagnosis with satisfactory sensitivity and specificity.
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Affiliation(s)
- Jian Liu
- Department of Oncology, Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Tingting Bian
- Department of Pathology, Affiliated Hospital of Nantong University, No 20, Xisi Road, Nantong, 226001, China
- Medical School of Nantong University, Nantong, 226001, China
| | - Bin She
- Academic Development, Shanghai Methyldia Technology Co. Ltd, Tellgen Corporation, No. 412 Huiqing Road, Shanghai, 201203, China
| | - Lei Liu
- Department of Pathology, Affiliated Hospital of Nantong University, No 20, Xisi Road, Nantong, 226001, China
| | - Hui Sun
- Department of Pathology, Affiliated Hospital of Nantong University, No 20, Xisi Road, Nantong, 226001, China
| | - Qing Zhang
- Department of Pathology, Affiliated Hospital of Nantong University, No 20, Xisi Road, Nantong, 226001, China
| | - Jun Zhu
- Department of Cardio-Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Jianguo Zhang
- Department of Pathology, Affiliated Hospital of Nantong University, No 20, Xisi Road, Nantong, 226001, China.
| | - Yifei Liu
- Department of Pathology, Affiliated Hospital of Nantong University, No 20, Xisi Road, Nantong, 226001, China.
- Medical School of Nantong University, Nantong, 226001, China.
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3
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Zhang N, Li Y, Zhang H, Dong Y, Zhang C, Du W, Long C, Xing X, Li K, Liu Z, Chen X, Zhang L, Xu F, Fu Y, Tan J, She B, Che N. Performance of SHOX2 and RASSF1A methylation assay in supernatants and matched cell pellets for the diagnosis of malignant pleural effusion. Clin Chim Acta 2024; 553:117699. [PMID: 38072300 DOI: 10.1016/j.cca.2023.117699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 12/05/2023] [Indexed: 12/21/2023]
Abstract
BACKGROUND It is difficult to distinguish between malignant pleural effusion (MPE) and benign pleural effusion (BPE). The purpose of this study was to determine the best specimen type by evaluating the DNA methylation status of SHOX2 and RASSF1A in 3 matched PE components. METHODS In total, 94 patients were enrolled, including 45 MPE, 35 BPE, and 14 undefined PE (UPE) with malignancies. PE samples were processed into supernatants, fresh-cell pellets, and formalin-fixed and paraffin-embedded (FFPE) cell blocks, respectively. A quantitative real-time PCR was used to detect the methylation status of SHOX2 and RASSF1A. RESULTS SHOX2 and RASSF1A methylation levels were significantly higher in the 3 MPE sample types than those of BPE (P < 0.05). The area under the curve using cell-free DNA (cf-DNA) was the highest. The detection sensitivity of SHOX2 and RASSF1A in fresh-cell DNA, cf-DNA and FFPE cell-block were 71.1% (32/45), 97.8% (44/45) and 66.7% (28/42), respectively, with specificities of 97.1% (34/35), 94.3% (33/35), and 96.9% (31/32). Notably, a combination of the cytological analysis and cf-DNA methylation assay showed an increase in positivity rate from 75.6% to 100%. CONCLUSIONS The SHOX2 and RASSF1A methylation assay using cf-DNA, the primary recommended specimen type, can excellently increase the diagnostic sensitivity of MPE. A combination of methylation assay with cytological analysis can be used for auxiliary diagnosis of PE.
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Affiliation(s)
- Nana Zhang
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Yongmeng Li
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Haoran Zhang
- Biobank of Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Yujie Dong
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Chen Zhang
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Weili Du
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Chaolian Long
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Xuya Xing
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Kun Li
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Zichen Liu
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Xuejing Chen
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Lili Zhang
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Fudong Xu
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Yuhong Fu
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Jing Tan
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Bin She
- Academic Development, Tellgen Corporation, Shanghai, China
| | - Nanying Che
- Department of Pathology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China; Biobank of Beijing Chest Hospital, Capital Medical University, Beijing 101149, China.
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Soboska K, Kusiński M, Pawelczyk K, Migdalska-Sęk M, Brzeziańska-Lasota E, Czarnecka-Chrebelska KH. Expression of RASSF1A, DIRAS3, and AKAP9 Genes in Thyroid Lesions: Implications for Differential Diagnosis and Prognosis of Thyroid Carcinomas. Int J Mol Sci 2024; 25:562. [PMID: 38203733 PMCID: PMC10778957 DOI: 10.3390/ijms25010562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/25/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
Thyroid carcinoma is the primary endocrine malignancy worldwide. The preoperative examination of thyroid tissue lesion is often unclear. Approximately 25% of thyroid cancers cannot be diagnosed definitively without post-surgery histopathological examination. The assessment of diagnostic and differential markers of thyroid cancers is needed to improve preoperative diagnosis and reduce unnecessary treatments. Here, we assessed the expression of RASSF1A, DIRAS3, and AKAP9 genes, and the presence of BRAF V600E point mutation in benign and malignant thyroid lesions in a Polish cohort (120 patients). We have also performed a comparative analysis of gene expression using data obtained from the Gene Expression Omnibus (GEO) database (307 samples). The expression of RASSF1A and DIRAS3 was decreased, whereas AKAP9's was increased in pathologically changed thyroid compared with normal thyroid tissue, and significantly correlated with e.g., histopathological type of lesion papillary thyroid cancer (PTC) vs follicular thyroid cancer (FTC), patient's age, tumour stage, or its encapsulation. The receiver operating characteristic (ROC) analysis for the more aggressive FTC subtype differential marker suggests value in estimating RASSF1A and AKAP9 expression, with their area under curve (AUC), specificity, and sensitivity at 0.743 (95% CI: 0.548-0.938), 82.2%, and 66.7%; for RASSF1A, and 0.848 (95% CI: 0.698-0.998), 54.8%, and 100%, for AKAP9. Our research gives new insight into the basis of the aggressiveness and progression of thyroid cancers, and provides information on potential differential markers that may improve preoperative diagnosis.
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Affiliation(s)
- Kamila Soboska
- Department of Biomedicine and Genetics, Medical University of Lodz, 251 Str. Pomorska, 92-213 Lodz, Poland (M.M.-S.)
- Department of Oncobiology and Epigenetics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland;
| | - Michał Kusiński
- Department of Endocrine, General and Vascular Surgery, Medical University of Lodz, 62 Str. Pabianicka, 93-513 Lodz, Poland;
| | - Karol Pawelczyk
- Department of Biomedicine and Genetics, Medical University of Lodz, 251 Str. Pomorska, 92-213 Lodz, Poland (M.M.-S.)
- Faculty of Medicine, Medical University of Lodz, Av. Kościuszki 4, 90-419 Lodz, Poland
| | - Monika Migdalska-Sęk
- Department of Biomedicine and Genetics, Medical University of Lodz, 251 Str. Pomorska, 92-213 Lodz, Poland (M.M.-S.)
| | - Ewa Brzeziańska-Lasota
- Department of Biomedicine and Genetics, Medical University of Lodz, 251 Str. Pomorska, 92-213 Lodz, Poland (M.M.-S.)
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Hamidi N, Feizi F, Azadmehr A, Zabihi E, Khafri S, Zarei-Behjani Z, Babazadeh Z. Disulfiram ameliorates bleomycin induced pulmonary inflammation and fibrosis in rats. Biotech Histochem 2023; 98:584-592. [PMID: 37779489 DOI: 10.1080/10520295.2023.2261367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023] Open
Abstract
Bleomycin (BL) is a widely used anticancer drug that can cause pulmonary fibrosis due to increased fibroblast proliferation and increased secretion of extracellular matrix. RASSF1A is a tumor suppressor gene that is down-regulated by DNA methylation during fibrosis. Disulfiram (DSF), a noncytosine DNA methyltransferase inhibitor, can revert epigenetic biomarkers and re-express silenced genes. We investigated anti-inflammatory and anti-fibrotic effects of DSF on regulation of epigenetic molecules and histopathology in a rat model of BL induced pulmonary fibrosis. We used six groups of rats: sesame oil (SO) control (Co) group, BL group, BL + SO group and three BL + DSF groups administered 1 mg/kg DSF (BL + DSF), 10 mg/kg DSF (BL + DSF10) or 100 mg/kg DSF (BL + DSF100), respectively. BL was administered intratracheally to induce pulmonary fibrosis. DSF and SO were injected intraperitoneally (i.p.) 2 days before BL administration; these injections were continued for 3 weeks. At the end of the study, lung tissues were removed for molecular and histopathologic studies. Administration of 10 or 100 mg/kg DSF after BL induced pulmonary inflammation and fibrosis, and up-regulated RASSF1A and down-regulated TNF-α and IL-1 β compared to the BL and BL + SO groups. A RASSF1A unmethylated band was observed using the methylation-specific PCR technique in rats that had been administered 10 and 100 mg/kg DSF, which indicated partial DNA demethylation. Histopathologic evaluation revealed that fibrosis and all inflammatory scores were decreased significantly in the BL + DSF10 and BL + DSF100 groups compared to the BL group. Our findings indicate that DSF modified DNA methylation by up-regulating RASSF1A, which reduced inflammation and fibrosis in BL induced pulmonary inflammation and fibrosis.
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Affiliation(s)
- Negar Hamidi
- Cellular and Molecular Biology Research Center, Institute of Health, Babol University of Medical Sciences, Babol, Iran
- Department of Anatomical Science, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Farideh Feizi
- Cellular and Molecular Biology Research Center, Institute of Health, Babol University of Medical Sciences, Babol, Iran
- Department of Anatomical Science, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Abbas Azadmehr
- Cellular and Molecular Biology Research Center, Institute of Health, Babol University of Medical Sciences, Babol, Iran
- Department of Immunology, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Ebrahim Zabihi
- Cellular and Molecular Biology Research Center, Institute of Health, Babol University of Medical Sciences, Babol, Iran
| | - Soraya Khafri
- Department of Biostatistics and Epidemiology, Faculty of Medicine, Babol University of Medical Science, Babol, Iran
| | - Zeinab Zarei-Behjani
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Babazadeh
- Cellular and Molecular Biology Research Center, Institute of Health, Babol University of Medical Sciences, Babol, Iran
- Department of Anatomical Science, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
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6
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Gao A, Bai P, Zhang M, Yao Y, Herman JG, Guo M. RASSF1A promotes ATM signaling and RASSF1A methylation is a synthetic lethal marker for ATR inhibitors. Epigenomics 2023; 15:1205-1220. [PMID: 38093706 DOI: 10.2217/epi-2023-0306] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023] Open
Abstract
Aim: The mechanism of RASSF1A in DNA damage repair remains to be further clarified for applying to synthetic lethal strategy. Materials & methods: Eight esophageal cancer cell lines, 181 cases of esophageal dysplasia and 1066 cases of primary esophageal squamous cell carcinoma (ESCC) were employed. Methylation-specific PCR, the CRISPR/Cas9 technique, immunoprecipitation assay and a xenograft mouse model were used. Results: RASSF1A was methylated in 2.21% of esophageal dysplasia and 11.73% of ESCC. RASSF1A was also involved in DNA damage repair through activating Hippo signaling. Loss of RASSF1A expression sensitized esophageal cancer cell lines to ataxia telangiectasia mutated and rad3-related (ATR) inhibitor (VE-822) both in vitro and in vivo. Conclusion: RASSF1A methylation is a synthetic lethal marker for ATR inhibitors.
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Affiliation(s)
- Aiai Gao
- Department of Gastroenterology & Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, 100853, China
| | - Panpan Bai
- Department of Gastroenterology & Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, 100853, China
- Henan Advanced Technology Research Institute, Zhengzhou University, Zhengzhou, 450000, Henan, China
| | - Meiying Zhang
- Department of Gastroenterology & Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, 100853, China
| | - Yuanxin Yao
- Department of Gastroenterology & Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, 100853, China
| | - James G Herman
- The Hillman Cancer Center, University of Pittsburgh Cancer Institute, Pittsburgh, PA 15213, USA
| | - Mingzhou Guo
- Department of Gastroenterology & Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, 100853, China
- National Key Laboratory of Kidney Diseases, Beijing, 100853, China
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Liu W, Xie A, Xiong J, Li S, Yang L, Liu W. WDR3 promotes stem cell-like properties in prostate cancer by inhibiting USF2-mediated transcription of RASSF1A. J Gene Med 2023; 25:e3498. [PMID: 36905106 DOI: 10.1002/jgm.3498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 02/01/2023] [Accepted: 03/04/2023] [Indexed: 03/12/2023] Open
Abstract
BACKGROUND WD repeat domain 3 (WDR3) is involved in tumor growth and proliferation, but its role in the pathological mechanism of prostate cancer (PCa) is still unclear. METHODS WDR3 gene expression levels were obtained by analyzing databases and our clinical specimens. The expression levels of genes and proteins were determined by a real-time polymerase chain reaction, western blotting and immunohistochemistry, respectively. Cell-counting kit-8 assays were used to measure the proliferation of PCa cells. Cell transfection was used to investigate the role of WDR3 and USF2 in PCa. Fluorescence reporter and chromatin immunoprecipitation assays were used to detect USF2 binding to the promoter region of RASSF1A. Mouse experiments were used to confirm the mechanism in vivo. RESULTS By analyzing the database and our clinical specimens, we found that WDR3 expression was significantly increased in PCa tissues. Overexpression of WDR3 enhanced PCa cell proliferation, decreased cell apoptosis rate, increased spherical cell number and increased indicators of stem cell-like properties. However, these effects were reversed by WDR3 knockdown. WDR3 was negatively correlated with USF2, which was degraded by promoting ubiquitination of USF2, and USF2 interacted with promoter region-binding elements of RASSF1A to depress PCa stemness and growth. In vivo studies showed that WDR3 knockdown reduced tumor size and weight, reduced cell proliferation and enhanced cell apoptosis. CONCLUSIONS WDR3 ubiquitinated USF2 and inhibited its stability, whereas USF2 interacted with promoter region-binding elements of RASSF1A. USF2 transcriptionally activated RASSF1A, which inhibited the carcinogenic effect of WDR3 overexpression.
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Affiliation(s)
- Weijing Liu
- Department of Reproductive Medicine, Hexian Memorial Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - An Xie
- Jiangxi Institute of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jing Xiong
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Sheng Li
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Lin Yang
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Weipeng Liu
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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Ji XY, Li H, Chen HH, Lin J. Diagnostic performance of RASSF1A and SHOX2 methylation combined with EGFR mutations for differentiation between small pulmonary nodules. J Cancer Res Clin Oncol 2023:10.1007/s00432-023-04745-8. [PMID: 37097393 DOI: 10.1007/s00432-023-04745-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 04/03/2023] [Indexed: 04/26/2023]
Abstract
BACKGROUND AND AIM Aberrant methylation of Ras association domain family 1, isoform A (RASSF1A), and short-stature homeobox gene 2 (SHOX2) promoters has been validated as a pair of valuable biomarkers for diagnosing early lung adenocarcinomas (LUADs). Epidermal growth factor receptor (EGFR) is the key driver mutation in lung carcinogenesis. This study aimed to investigate the aberrant promoter methylation of RASSF1A and SHOX2, and the genetic mutation of EGFR in 258 specimens of early LUADs. METHODS We retrospectively selected 258 paraffin-embedded samples of pulmonary nodules measuring 2 cm or less in diameter and evaluated the diagnostic performance of individual biomarker assays and multiple panels between noninvasive (group 1) and invasive lesions (groups 2A and 2B). Then, we investigated the interaction between genetic and epigenetic alterations. RESULTS The degree of RASSF1A and SHOX2 promoter methylation and EGFR mutation was significantly higher in invasive lesions than in noninvasive lesions. The three biomarkers distinguished between noninvasive and invasive lesions with reliable sensitivity and specificity: 60.9% sensitivity [95% confidence interval (CI) 52.41-68.78] and 80.0% specificity (95% CI 72.14-86.07). The novel panel biomarkers could further discriminate among three invasive pathological subtypes (area under the curve value > 0.6). The distribution of RASSF1A methylation and EGFR mutation was considerably exclusive in early LUAD (P = 0.002). CONCLUSION DNA methylation of RASSF1A and SHOX2 is a pair of promising biomarkers, which may be used in combination with other driver alterations, such as EGFR mutation, to support the differential diagnosis of LUADs, especially for stage I.
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Affiliation(s)
- Xiang-Yu Ji
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
| | - Hong Li
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Hui-Hui Chen
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Jie Lin
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China.
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China.
- National Virtual and Reality Experimental Education Center for Medical Morphology, Southern Medical University, Guangzhou, People's Republic of China.
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Bin Y, Deng W, Hu H, Zeng Q, Chen J, Xu Y, Dai Y, Liao A, Xiao W. RASSF1A inhibits epithelial-mesenchymal transition of gastric cancer cells by downregulating P-JNK. Cell Biol Int 2023; 47:573-583. [PMID: 36404583 DOI: 10.1002/cbin.11958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 10/18/2022] [Accepted: 10/30/2022] [Indexed: 11/22/2022]
Abstract
Gastric cancer (GC) is one of the most common gastrointestinal tumors. In this study, we assessed the biological role of Ras association domain family 1 isoform A (RASSF1A) in GC cells. Expressions of RASSF1A and the relationship of RASSF1A with epithelial-mesenchymal transformation (EMT)-related proteins were assessed in five cell lines using Western blot. GC cells with RASSF1A overexpression were used to study sensitivity to cisplatin, migration, invasion, and the expression of EMT-associated biomarkers. GC cells showed profound downregulation of RASSF1A expression compared with normal human gastric mucosal cells. High RASSF1A expression was associated with increased overall survival. Overexpression of RASSF1A regulates GC cells activity and the expression of EMT-associated biomarkers. RASSF1A regulates E-cadherin and Vimentin through P-JNK pathway. Our results revealed that RASSF1A can inhibit the proliferation, migration, and invasion of GC cells via E-cadherin. Our study provides insights for further research on GC.
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Affiliation(s)
- Yuling Bin
- The First Affiliated Hospital, Department of Gastroenterology, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Wenbing Deng
- The First Affiliated Hospital, Department of Gastroenterology, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Hongsai Hu
- Department of Gastroenterology, ZhuZhou Central Hospital, Zhuzhou, Hunan, China
| | - Qiong Zeng
- Department of Geratology, LouDi Central Hospital, Loudi, Hunan, China
| | - Juan Chen
- The First Affiliated Hospital, Department of Gastroenterology, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Yanqing Xu
- Department of Gastroenterology, AnXiang People's Hospital, Anxiang, Hunan, China
| | - Yong Dai
- The First Affiliated Hospital, Department of Gastroenterology, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Aijun Liao
- The First Affiliated Hospital, Department of Gastroenterology, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Weisheng Xiao
- The First Affiliated Hospital, Department of Gastroenterology, Hengyang Medical School, University of South China, Hengyang, Hunan, China
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Ueno-Yokohata H, Okita H, Nakasato K, Kiyokawa N. Hypermethylation of RASSF1A gene in pediatric rhabdoid tumor of the kidney and clear cell sarcoma of the kidney. Pediatr Blood Cancer 2023; 70:e30058. [PMID: 36250993 DOI: 10.1002/pbc.30058] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 09/06/2022] [Accepted: 09/25/2022] [Indexed: 01/09/2023]
Abstract
BACKGROUND Among pediatric renal tumors, rhabdoid tumor of the kidney (RTK) and clear cell sarcoma of the kidney (CCSK) are rare and associated with an unfavorable prognosis, while congenital mesoblastic nephroma (CMN) is associated with a good prognosis. Methylation of the Ras association domain-containing protein 1 isoform A (RASSF1A) promoter has been reported to correlate with a poor prognosis in patients with Wilms tumors, while its methylation status is unclear in other types of pediatric renal tumors. METHOD DNA methylation of the RASSF1A promoter in several pediatric renal tumors was analyzed with pyrosequencing. In order to clarify the correlation between expression of RASSF1A and DNA methylation of its promoter, the RTK cell line was treated with 5-Aza-2'-deoxycytidine (5-Aza-dC). RASSF1A was overexpressed in the RTK cell line to evaluate its functional effects. RESULTS Quantitative methylation analysis demonstrated hypermethylation in the RASSF1A promoter region in RTK and CCSK, but not CMN. The 5-Aza-dC treatment induced demethylation of the RASSF1A promoter as well as increased RASSF1A mRNA expression. The transduction of RASSF1A has an effect on the suppression of viability and proliferation of RTK cells. CONCLUSION DNA methylation-mediated deficiency of RASSF1A might be involved in the development and aggressiveness of some pediatric renal tumors and correlated with a poor prognosis.
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Affiliation(s)
- Hitomi Ueno-Yokohata
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Setagaya-ku, Tokyo, Japan
| | - Hajime Okita
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Setagaya-ku, Tokyo, Japan.,Division of Diagnostic Pathology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Keiko Nakasato
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Setagaya-ku, Tokyo, Japan
| | - Nobutaka Kiyokawa
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Setagaya-ku, Tokyo, Japan
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11
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Zhang J, Huang H, Yu F, Bian Y, Wang R, Liu H, Kang S, She B, Shi Z. A comprehensive diagnostic scheme of morphological combined molecular methylation under bronchoscopy. Front Oncol 2023; 13:1133675. [PMID: 37182143 PMCID: PMC10174301 DOI: 10.3389/fonc.2023.1133675] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 04/12/2023] [Indexed: 05/16/2023] Open
Abstract
Methylated SHOX2 and RASSF1A genes are potential biomarkers for lung cancer diagnosis. Therefore, we explored the role of methylation detection combined with morphological bronchoscopic evaluation for lung cancer diagnosis. Bronchoscopy, methylation outcome, and pathological data were collected from 585 patients with lung cancer and 101 controls. The methylation status of the SHOX2 and RASSF1A genes were detected using real-time polymerase chain reaction quantification. Further, the sensitivity and area under the receiver operating characteristic curve of the three methods were analyzed. Among 686 patients, 57.1% had new lesions detected through bronchoscopy and 93.1% of these patients were diagnosed with malignant tumors. Besides, 42.9% of patients had no visible changes under bronchoscopy but there were still 74.8% of them diagnosed with malignant tumors. Bronchoscopy revealed that lung adenocarcinoma, lung squamous cell carcinoma, and small cell lung cancer mainly occurred in the upper and middle lobes. The sensitivity and specificity of methylation detection were 72.8% and 87.1% (vs. cytology 10.4% & 100%), respectively. Therefore, methylated SHOX2 and RASSF1A genes may be promising tumor markers in lung cancer diagnosis. Methylation detection can be an excellent supplementary tool for cytological diagnosis and, combined with bronchoscopy, could form a more effective diagnostic process.
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Affiliation(s)
- Jinze Zhang
- Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Haoran Huang
- Department of Academic Development, Tellgen Corporation, Shanghai, China
| | - Fan Yu
- Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yuanyuan Bian
- Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Rui Wang
- The Cancer Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Hui Liu
- Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Saisai Kang
- Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Bin She
- Department of Academic Development, Tellgen Corporation, Shanghai, China
| | - Zhihua Shi
- Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
- *Correspondence: Zhihua Shi,
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12
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Ho CM, Yen TL, Chien TY, Huang SH. Distinct promotor methylation at tumor suppressive genes in ovarian cancer stromal progenitor cells and ovarian cancer and its clinical implication. Am J Cancer Res 2022; 12:5325-5341. [PMID: 36504889 PMCID: PMC9729910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 11/12/2022] [Indexed: 12/15/2022] Open
Abstract
Aberrant CpG-island methylation affects ovarian cancer progression. The promotor methylation changes at tumor suppressive genes in ovarian cancer stromal progenitor cells (OCSPCs) and epithelial ovarian cancer (EOC) tissues and their clinical implication remains unexplored. We systemically analyzed the promoter methylation status of 40 tumor suppressor genes (TSGs) associated with cancer in paired epithelial-like and mesenchymal-like OCSPCs and ovarian cancer cells by methylation-specific multiplex ligation-dependent probe amplification (MS-MLPA). The effect of DNA methylation on gene expression was confirmed using qRT-PCR. The differential frequencies of TSGs' promoter methylation among matched epithelial-like or mesenchymal-like OCSPCs from tissues and ascites and ovarian cancer tissues were further validated in cancer tissues and correlated with clinicopathological features and survival outcomes of patients. According to the promoter methylation frequencies of the 40 TSGs, promoters of RASSF1A were the only significantly hypomethylated in epithelial-like OCSPCs from tissues than those from ascites and bulk tumor cells (0% vs 38% vs 45%, P=0.039 by Fisher's exact test). The most frequencies at promotor hypermethylation of TSGs in mesenchymal-like OCSPCs from ascites which processed aggressiveness were CDKN2B (73%) followed by CCND2 (45%) and RASSF1A (45%). Forty-three percent (47/110) of RASSF1A and 45% of CCND2 were validated as a frequently hypermethylated gene in an independent set of 110 EOC tissues in contrast to none (0/60) and 12% (10/60) of benign ovarian cysts (both P<0.001). Functional experiments revealed overexpression of CCND2 or CDKN2B in MSc-OCSPCs decreases EMT, invasion, and spheroid formation in EOC, and abolishes DNMT1 and COL6A3 expression. However, for the expected 5-year overall survival (OS) for patients with methylated RASSF1A, CCND2, and CDKN2B, only RASSF1A was significantly worse than those without methylated RASSF1A (56% vs 80%, p=0.022). Taken together, overexpression of CCND2 and CDKN2B decreased the aggressiveness of mesenchymal-like OCSPCs from ascites which may represent a potential therapeutic target for EOC. Promotor hypomethylation at RASSF1A in OCSPCs from EOC tissues and changes to hypermethylation of EOC and OCSPCs from ascites could predict poor survival outcomes for EOC patients compared to without those changes of CCND2 and CDKN2B.
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Affiliation(s)
- Chih-Ming Ho
- Gynecologic Cancer Center, Department of Obstetrics and Gynecology, Cathay General HospitalTaipei, Taiwan,School of Medicine, Fu Jen Catholic UniversityHsinchuang, New Taipei City, Taiwan,Department of Medical Research, Cathay General HospitalNew Taipei City, Taiwan
| | - Ting-Lin Yen
- Department of Medical Research, Cathay General HospitalNew Taipei City, Taiwan
| | - Tsai-Yen Chien
- Gynecologic Cancer Center, Department of Obstetrics and Gynecology, Cathay General HospitalTaipei, Taiwan
| | - Shih-Hung Huang
- Department of Pathology, Cathay General HospitalTaipei, Taiwan
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13
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Nomeir H, Elsheredy H, Nomeir A, Mostafa NR, El-Hamshary S. Diagnostic performance of RASSF1A and CDKN2A gene methylation versus α-fetoprotein in hepatocellular carcinoma. Clin Exp Hepatol 2022; 8:243-52. [PMID: 36685264 DOI: 10.5114/ceh.2022.119315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 08/07/2022] [Indexed: 01/25/2023] Open
Abstract
Aim of the study This study aimed to evaluate the methylation status of two genes in the peripheral blood as possible non-invasive biomarkers for hepatocellular carcinoma (HCC) development in Egyptian patients with hepatitis C virus (HCV)-related liver cirrhosis, compare them with α-fetoprotein (AFP), and assess their relationship with the clinicopathological characteristics of the tumor. Material and methods Thirty healthy volunteers, forty patients with HCC on top of HCV-associated liver cirrhosis, and forty patients with HCV-associated liver cirrhosis participated in this study. Using methylation-specific polymerase chain reaction (MSP), the methylation status of RASSF1A and CDKN2A was assessed. Results The tumor group was significantly more methylated in both genes than the cirrhosis and the control groups. The RASSF1A gene was highly methylated in advanced tumor characteristics. There was no association between AFP levels in the blood and the methylation state of both genes. The combined diagnostic performance of the methylation status of both genes in predicting HCC in cirrhotic patients was high but not to the degree of that of AFP. Conclusions Methylated RASSF1A and CDKN2A levels in the blood may be employed as a non-invasive biomarker for the detection of HCC, especially in high-risk individuals.
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14
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Xie B, Peng F, He F, Cheng Y, Cheng J, Zhou Z, Mao W. DNA methylation influences the CTCF-modulated transcription of RASSF1A in lung cancer cells. Cell Biol Int 2022; 46:1900-1914. [PMID: 35989484 DOI: 10.1002/cbin.11868] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/30/2022] [Accepted: 07/14/2022] [Indexed: 11/05/2022]
Abstract
Ras-association domain family 1A (RASSF1A) is one of the most methylated genes in lung cancer (LC). We investigate whether the high DNA methylation level of RASSF1A can relieve the resistance of RASSF1A to LC by inhibiting RASSF1A's transcription factor binding to RASSF1A. RASSF1A expression in tissues and cells was tested utilizing quantitative real-time polymerase chain reaction (qRT-PCR), and Western blot. RASSF1A expression and RASSF1A methylation level in LC cells exposed to 5-Aza-dc were assessed by qRT-PCR and quantitative methylation-specific PCR. The association between CTCF and RASSF1A was assessed using hTFtarget, ChIP, and luciferase reporter gene analysis. The effects of 5-Aza-dc, CTCF, and RASSF1A on cell biological behaviors and epithelial-mesenchymal transition (EMT)-related markers were assessed by cell function experiments and Western blot. Moreover, we constructed the xenograft tumor and pulmonary nodule metastasis models, and assessed tumor volume and weight. RASSF1A expression and pulmonary nodule metastasis were tested utilizing qRT-PCR, Western blot, and H&E staining. RASSF1A was under-expressed in LC tissues and cells. 5-Aza-dc enhanced RASSF1A level and weakened RASSF1A methylation level in LC cells. RASSF1A silencing neutralized 5-Aza-dc-mediated repressing effects on LC cell biological function and EMT. The loss of CTCF binding to RASSF1A in LC cells was associated with DNA methylation. The effect of 5-Aza-dc on RASSF1A level, LC cell malignant behaviors, and EMT-related factors were strengthened by CTCF upregulation. RASSF1A overexpression suppressed LC tumor growth and pulmonary nodule metastasis in vivo. DNA methylation blocked the modulation of RASSF1A expression by CTCF and relieved the resistance of RASSF1A to LC.
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Affiliation(s)
- Bin Xie
- Department of Respiratory Medicine, Yue Bei People's Hospital, Shaoguan, China
| | - Feng Peng
- Department of Respiratory Medicine, Yue Bei People's Hospital, Shaoguan, China
| | - Fengping He
- Central Laboratory, Yue Bei People's Hospital, Shaoguan, China
| | - Yixing Cheng
- Department of Respiratory Medicine, Huzhou Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medical University, Huzhou, Zhejiang, China
| | - Jiangtao Cheng
- Department of Respiratory Medicine, Yue Bei People's Hospital, Shaoguan, China
| | - Zhibing Zhou
- Department of Respiratory Medicine, Yue Bei People's Hospital, Shaoguan, China
| | - Wei Mao
- Department of Respiratory Medicine, Huzhou Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medical University, Huzhou, Zhejiang, China
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15
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Klimaitė R, Kazokaitė M, Kondrotienė A, Daukšienė D, Sabaliauskaitė R, Žukauskaitė K, Žilaitienė B, Jarmalaitė S, Daukša A. The Role of TSHR, PTEN and RASSF1A Promoters' Methylation Status for Non-Invasive Detection of Papillary Thyroid Carcinoma. J Clin Med 2022; 11. [PMID: 36013156 DOI: 10.3390/jcm11164917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/11/2022] [Accepted: 08/18/2022] [Indexed: 11/16/2022] Open
Abstract
Aim: We investigated whether a difference exists between TSHR, PTEN and RASSF1A methylation status in plasma of subjects with papillary thyroid cancer (PTC). Methods: Peripheral blood samples were collected from 68 patients with PTC and 86 healthy controls (HC). Thyroid cancer tissue and corresponding adjacent normal tissue methylation levels were analyzed. DNA methylation level changes in TSHR, PTEN and RASSF1A genes were analyzed by quantitative methylation-sensitive polymerase chain reaction. Results: We observed that the methylation level of TSHR was significantly higher in the thyroid cancer tissue compared to adjacent normal tissue (p = 0.040). TSHR methylation levels in the PTC group plasma samples were significantly higher compared to HC (p = 0.022). After surgery, PTC plasma samples showed lower TSHR and PTEN methylation levels compared to the levels before surgery (p = 0.003, p = 0.031, respectively). The TSHR methylation level was significantly higher in PTC with larger tumor size (>2 cm) (p < 0.001), and lymph node metastases (p = 0.01), lymphovascular invasion (p = 0.02) and multifocality (p = 0.013) 0ROC analysis revealed that the TSHR methylation level provides high accuracy in distinguishing PTC from HC (p = 0.022, AUC of 0.616). Conclusion: TSHR methylation in peripheral blood samples is expected to be a sensitive and specific minimally invasive tool for the diagnosis of PTC, especially in combination with other diagnostic means.
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16
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Li J, Li H, Run ZC, Wang ZL, Jiang T, An Y, Li Z. RASSF1A methylation as a biomarker for detection of colorectal cancer and hepatocellular carcinoma. World J Gastrointest Oncol 2022; 14:1574-1584. [PMID: 36160746 PMCID: PMC9412931 DOI: 10.4251/wjgo.v14.i8.1574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/02/2022] [Accepted: 07/22/2022] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Studies have validated the potential of methylated cell-free DNA as a biomarker in various tumors, and methylated DNA in plasma may be a potential biomarker for cancer.
AIM To evaluate the diagnostic value of RASSF1A methylation in plasma for colorectal cancer (CRC) and hepatocellular carcinoma (HCC).
METHODS A total of 92 CRC patients, 67 colorectal polyp (CRP) patients, 63 HCC patients, and 66 liver cirrhosis (LC) patients were enrolled. The plasma DNA was subjected to DNA extraction, double-strand DNA concentration determination, bisulfite conversion, purification, single-strand DNA concentration determination, and digital polymerase chain reaction (PCR) detection. The methylation rate was calculated. The diagnostic value was evaluated by the area under the curve (AUC).
RESULTS The age and sex in the CRC and CRP groups and the HCC and LC groups were also matched. The DNA methylation rate of RASSF1A in plasma in the CRC group was 2.87 ± 1.80, and that in the CRP group was 1.50 ± 0.64. DNA methylation of RASSF1A in plasma showed a significant difference between the CRC and CRP groups. The AUC of RASSF1A methylation for discriminating the CRC and CRP groups was 0.82 (0.76-0.88). The AUCs of T1, T2, T3 and T4 CRC and CRP were 0.83 (0.72-0.95), 0.87 (0.78-0.95), 0.86 (0.77-0.95), and 0.75 (0.64-0.85), respectively. The DNA methylation rate of RASSF1A in plasma in the HCC group was 4.45 ± 2.93, and that in the LC group was 2.46 ± 2.07. DNA methylation of RASSF1A in plasma for the HCC and LC groups showed a significant difference. The AUC of RASSF1A methylation for discriminating the HCC and LC groups was 0.70 (0.60-0.79). The AUCs of T1, T2, T3 and T4 HCC and LC were 0.80 (0.61, 1.00), 0.74 (0.59-0.88), 0.60 (0.42-0.79), and 0.68 (0.53-0.82), respectively.
CONCLUSION RASSF1A methylation in plasma detected by digital PCR may be a potential biomarker for CRC and HCC.
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Affiliation(s)
- Jian Li
- Department of General Surgery, Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou 450000, Henan Province, China
| | - Huan Li
- Department of Gastroenterology, Sixth Medical Center of Chinese PLA General Hospital, Beijing 100048, China
| | - Zeng-Ci Run
- Department of General Surgery, Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou 450000, Henan Province, China
| | - Zhen-Lei Wang
- Department of General Surgery, Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou 450000, Henan Province, China
| | - Tao Jiang
- Medicine Innovation Research Division of Chinese PLA General Hospital, Beijing 100853, China
| | - Yang An
- Faculty of Hepato-Pancreato-Biliary Surgery, Sixth Medical Center of Chinese PLA General Hospital, Beijing 100048, China
| | - Zhi Li
- Department of General Surgery, Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou 450000, Henan Province, China
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17
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Tsaridou S, Velimezi G, Willenbrock F, Chatzifrangkeskou M, Elsayed W, Panagopoulos A, Karamitros D, Gorgoulis V, Lygerou Z, Roukos V, O'Neill E, Pefani DE. 53BP1-mediated recruitment of RASSF1A to ribosomal DNA breaks promotes local ATM signaling. EMBO Rep 2022; 23:e54483. [PMID: 35758159 PMCID: PMC9346497 DOI: 10.15252/embr.202154483] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 05/30/2022] [Accepted: 06/03/2022] [Indexed: 12/29/2022] Open
Abstract
DNA lesions occur across the genome and constitute a threat to cell viability; however, damage at specific genomic loci has a relatively greater impact on overall genome stability. The ribosomal RNA gene repeats (rDNA) are emerging fragile sites. Recent progress in understanding how the rDNA damage response is organized has highlighted a key role of adaptor proteins. Here, we show that the scaffold tumor suppressor RASSF1A is recruited to rDNA breaks. RASSF1A recruitment to double-strand breaks is mediated by 53BP1 and depends on RASSF1A phosphorylation at Serine 131 by ATM kinase. Employing targeted rDNA damage, we uncover that RASSF1A recruitment promotes local ATM signaling. RASSF1A silencing, a common epigenetic event during malignant transformation, results in persistent breaks, rDNA copy number alterations and decreased cell viability. Overall, we identify a novel role for RASSF1A at rDNA break sites, provide mechanistic insight into how the DNA damage response is organized in a chromatin context, and provide further evidence for how silencing of the RASSF1A tumor suppressor contributes to genome instability.
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Affiliation(s)
- Stavroula Tsaridou
- Department of Biology, School of Medicine, University of Patras, Patras, Greece
| | - Georgia Velimezi
- Department of Biology, School of Medicine, University of Patras, Patras, Greece.,Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | | | | | | | | | - Dimitris Karamitros
- Department of Physiology, School of Medicine, University of Patras, Patras, Greece
| | - Vassilis Gorgoulis
- Biomedical Research Foundation of the Academy of Athens, Athens, Greece.,Laboratory of Histology and Embryology, Medical School, National and Kapodistrian University of Athens, Athens, Greece.,Faculty of Biology, Medicine and Health, Manchester Academic Health Centre, University of Manchester, Manchester, UK.,Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | - Zoi Lygerou
- Department of Biology, School of Medicine, University of Patras, Patras, Greece
| | - Vassilis Roukos
- Department of Biology, School of Medicine, University of Patras, Patras, Greece.,Institute of Molecular Biology (IMB), Mainz, Germany
| | - Eric O'Neill
- Department of Oncology, University of Oxford, Oxford, UK
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Yin G, Kong W, Liu X, Zheng S, Ying R, Shan Y. Association of RASSF1A Ala133Ser polymorphism with cancer risk: a updated meta-analysis involving 7362 subjects. Nucleosides Nucleotides Nucleic Acids 2022; 41:1084-1098. [PMID: 35737461 DOI: 10.1080/15257770.2022.2090001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
It has been demonstrated in many studies that the polymorphism of Ras association domain family 1 isoform A (RASSF1A) is related to tumor risk; however, this conclusion remains a controversy. In this study, we systemically retrieved relevant studies in electronic databases such as PUBMED, and EMBASE, and calculated odds ratios (ORs) as well as relevant 95% confidence intervals (CIs). Besides, meta-package in STATA version 12.0 was used. This meta-analysis finally included altogether 12 studies with 16 case-control articles. According to our data, the polymorphism of RASSF1A Ala133Ser was associated with tumor risk (Ser vs. Ala: OR = 1.68,95% CI = 1.20-2.36; Ala/Ser vs. Ala/Ala:OR = 1.63,95% CI = 1.16-2.27; Ser/Ser vs. Ala/Ala:OR = 3.06,95% CI = 1.91-4.89; Recessive model:OR = 2.67, 95% CI = 1.66-4.32; Dominant model: OR =1.72, 95% CI =1.20-2.45). Further, subgroup analyses stratified based on race and cancer type indicated this polymorphism is related to lung cancer(LC) and hepatocellular carcinoma(HCC) susceptibility in Asians.In conclusion, we found that RASSF1A Ala133Ser polymorphism increased LC and HCC risk in Asians, which requires large-scale, delicately-designed researches for verification.
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Affiliation(s)
- Guang Yin
- Department of Gastrointestinal Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wencheng Kong
- Department of Gastrointestinal Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xinchun Liu
- Department of Gastrointestinal Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Sixin Zheng
- Department of Gastrointestinal Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Rongchao Ying
- Department of Gastrointestinal Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yuqiang Shan
- Department of Gastrointestinal Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
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19
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Abstract
BACKGROUND RASSF1A is a tumor suppressor gene. The methylation of RASSF1A has been reported to be associated with nasopharyngeal tumorigenesis. However, the heterogeneity was high among different studies. A meta-analysis was performed to evaluate the value of RASSF1A methylation for the diagnosis and early screening of nasopharyngeal carcinoma. METHODS Relevant articles were identified by searching the MEDLINE database. Frequency and odds ratio (OR) were applied to estimate the effect of CDH-1 methylation based on random-/fixed-effect models. The meta-analysis was performed by using MedCalc® software. Subgroup analyses were performed by test method, ethnicity, and source of nasopharyngeal carcinoma samples to determine likely sources of heterogeneity. RESULTS A total of 17 studies, including 1688 samples (1165 nasopharyngeal carcinoma samples, and 523 from non-cancerous samples) were used for the meta-analysis. The overall frequencies of RASSF1A methylation were 59.68% and 2.65% in case-group and control-group, respectively. By removing the poor relative studies, the heterogeneity was not observed among the studies included. The association between RASSF1A gene methylation and the risk of nasopharyngeal carcinoma was also confirmed by calculating the OR value of 30.32 (95%CI = 18.22-50.47) in the fixed-effect model (Q = 16.41, p = 0.36,I2 = 8.62, 95% CI = 0.00-45.27). Additionally, the significant association was also found between the methylation of the RASSF1A gene and the subgroups. CONCLUSIONS This is the first meta-analysis that has provided scientific evidence that the methylation of RASSF1A is the potential diagnosis, prognosis, and early screening biomarker for nasopharyngeal carcinoma.
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Affiliation(s)
- Thuan Duc Lao
- Faculty of Biotechnology, 486019Ho Chi Minh City Open University, HCMC, Vietnam
| | - Hue Hong Thieu
- Faculty of Biotechnology, 486019Ho Chi Minh City Open University, HCMC, Vietnam
| | - Dung Huu Nguyen
- University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thuy Ai Huyen Le
- Faculty of Biotechnology, 486019Ho Chi Minh City Open University, HCMC, Vietnam
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20
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Roßwag S, Sleeman JP, Thaler S. RASSF1A-Mediated Suppression of Estrogen Receptor Alpha (ERα)-Driven Breast Cancer Cell Growth Depends on the Hippo-Kinases LATS1 and 2. Cells 2021; 10:cells10112868. [PMID: 34831091 PMCID: PMC8616147 DOI: 10.3390/cells10112868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 10/07/2021] [Accepted: 10/12/2021] [Indexed: 11/27/2022] Open
Abstract
Around 70% of breast cancers express the estrogen receptor alpha (ERα). This receptor is of central importance for breast cancer development and estrogen-dependent tumor growth. However, the molecular mechanisms that are responsible for the control of ERα expression and function in the context of breast carcinogenesis are complex and not fully understood. In previous work, we have demonstrated that the tumor suppressor RASSF1A suppresses estrogen-dependent growth of breast cancer cells through a complex network that keeps ERα expression and function under control. We observed that RASSF1A mediates the suppression of ERα expression through modulation of the Hippo effector Yes-associated protein 1 (YAP1) activity. Here we report that RASSF1A-mediated alteration of YAP1 depends on the Hippo-kinases LATS1 and LATS2. Based on these results, we conclude that inactivation of RASSF1A causes changes in the function of the Hippo signaling pathway and altered activation of YAP1, and as a consequence, increased expression and function of ERα. Thus, the inactivation of RASSF1A might constitute a fundamental event that supports the initiation of ERα-dependent breast cancer. Furthermore, our results support the notion that the Hippo pathway is important for the suppression of luminal breast cancers, and that the tumor-suppressor function of RASSF1A depends on LATS1 and LATS2.
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Affiliation(s)
- Sven Roßwag
- Department of Microvascular Biology and Pathobiology, European Center for Angioscience (ECAS), Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany; (S.R.); (J.P.S.)
| | - Jonathan P. Sleeman
- Department of Microvascular Biology and Pathobiology, European Center for Angioscience (ECAS), Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany; (S.R.); (J.P.S.)
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT) Campus Nord, 76344 Eggenstein-Leupoldshafen, Germany
| | - Sonja Thaler
- Department of Microvascular Biology and Pathobiology, European Center for Angioscience (ECAS), Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany; (S.R.); (J.P.S.)
- Correspondence: ; Tel.: +49-621-383-71599; Fax: +49-621-383-71451
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21
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Lobo J, van Zogchel LMJ, Nuru MG, Gillis AJM, van der Schoot CE, Tytgat GAM, Looijenga LHJ. Combining Hypermethylated RASSF1A Detection Using ddPCR with miR-371a-3p Testing: An Improved Panel of Liquid Biopsy Biomarkers for Testicular Germ Cell Tumor Patients. Cancers (Basel) 2021; 13:5228. [PMID: 34680375 PMCID: PMC8534014 DOI: 10.3390/cancers13205228] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/06/2021] [Accepted: 10/13/2021] [Indexed: 12/22/2022] Open
Abstract
The classical serum tumor markers used routinely in the management of testicular germ cell tumor (TGCT) patients-alpha fetoprotein (AFP) and human chorionic gonadotropin (HCG)-show important limitations. miR-371a-3p is the most recent promising biomarker for TGCTs, but it is not sufficiently informative for detection of teratoma, which is therapeutically relevant. We aimed to test the feasibility of hypermethylated RASSF1A (RASSF1AM) detected in circulating cell-free DNA as a non-invasive diagnostic marker of testicular germ cell tumors, combined with miR-371a-3p. A total of 109 serum samples of patients and 29 sera of healthy young adult males were included, along with representative cell lines and tumor tissue samples. We describe a novel droplet digital polymerase chain reaction (ddPCR) method for quantitatively assessing RASSF1AM in liquid biopsies. Both miR-371a-3p (sensitivity = 85.7%) and RASSF1AM (sensitivity = 86.7%) outperformed the combination of AFP and HCG (sensitivity = 65.5%) for TGCT diagnosis. RASSF1AM detected 88% of teratomas. In this representative cohort, 14 cases were negative for miR-371a-3p, all of which were detected by RASSF1AM, resulting in a combined sensitivity of 100%. We have described a highly sensitive and specific panel of biomarkers for TGCT patients, to be validated in the context of patient follow-up and detection of minimal residual disease.
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Affiliation(s)
- João Lobo
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS Utrecht, The Netherlands; (J.L.); (L.M.J.v.Z.); (A.J.M.G.)
- Cancer Biology and Epigenetics Group, Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC), R. Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal
- Department of Pathology, Portuguese Oncology Institute of Porto (IPOP), R. Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal
- Department of Pathology and Molecular Immunology, ICBAS—School of Medicine and Biomedical Sciences, University of Porto (ICBAS-UP), Rua Jorge Viterbo Ferreira 228, 4050-513 Porto, Portugal
| | - Lieke M. J. van Zogchel
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS Utrecht, The Netherlands; (J.L.); (L.M.J.v.Z.); (A.J.M.G.)
- Department of Experimental Immunohematology, Sanquin Research Amsterdam, Plesmanlaan 125, 1066 CX Amsterdam, The Netherlands; (M.G.N.); (C.E.v.d.S.)
| | - Mohammed G. Nuru
- Department of Experimental Immunohematology, Sanquin Research Amsterdam, Plesmanlaan 125, 1066 CX Amsterdam, The Netherlands; (M.G.N.); (C.E.v.d.S.)
| | - Ad J. M. Gillis
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS Utrecht, The Netherlands; (J.L.); (L.M.J.v.Z.); (A.J.M.G.)
| | - C. Ellen van der Schoot
- Department of Experimental Immunohematology, Sanquin Research Amsterdam, Plesmanlaan 125, 1066 CX Amsterdam, The Netherlands; (M.G.N.); (C.E.v.d.S.)
| | - Godelieve A. M. Tytgat
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS Utrecht, The Netherlands; (J.L.); (L.M.J.v.Z.); (A.J.M.G.)
| | - Leendert H. J. Looijenga
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS Utrecht, The Netherlands; (J.L.); (L.M.J.v.Z.); (A.J.M.G.)
- Lab. for Exp. Patho-Oncology (LEPO), Department of Pathology, Erasmus MC-University Medical Center, Doctor Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
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22
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Zhu C, Zhang M, Wang Q, Jen J, Liu B, Guo M. Intratumor Epigenetic Heterogeneity-A Panel Gene Methylation Study in Thyroid Cancer. Front Genet 2021; 12:714071. [PMID: 34539742 PMCID: PMC8446600 DOI: 10.3389/fgene.2021.714071] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 08/16/2021] [Indexed: 11/18/2022] Open
Abstract
Background Thyroid cancer (TC) is the most common endocrine malignancy, and the incidence is increasing very fast. Surgical resection and radioactive iodine ablation are major therapeutic methods, however, around 10% of differentiated thyroid cancer and all anaplastic thyroid carcinoma (ATC) are failed. Comprehensive understanding the molecular mechanisms may provide new therapeutic strategies for thyroid cancer. Even though genetic heterogeneity is rigorously studied in various cancers, epigenetic heterogeneity in human cancer remains unclear. Methods A total of 405 surgical resected thyroid cancer samples were employed (three spatially isolated specimens were obtained from different regions of the same tumor). Twenty-four genes were selected for methylation screening, and frequently methylated genes in thyroid cancer were used for further validation. Methylation specific PCR (MSP) approach was employed to detect the gene promoter region methylation. Results Five genes (AP2, CDH1, DACT2, HIN1, and RASSF1A) are found frequently methylated (>30%) in thyroid cancer. The five genes panel is used for further epigenetic heterogeneity analysis. AP2 methylation is associated with gender (P < 0.05), DACT2 methylation is associated with age, gender and tumor size (all P < 0.05), HIN1 methylation is associated to tumor size (P < 0.05) and extra-thyroidal extension (P < 0.01). RASSF1A methylation is associated with lymph node metastasis (P < 0.01). For heterogeneity analysis, AP2 methylation heterogeneity is associated with tumor size (P < 0.01), CDH1 methylation heterogeneity is associated with lymph node metastasis (P < 0.05), DACT2 methylation heterogeneity is associated with tumor size (P < 0.01), HIN1 methylation heterogeneity is associated with tumor size and extra-thyroidal extension (all P < 0.01). The multivariable analysis suggested that the risk of lymph node metastasis is 2.5 times in CDH1 heterogeneous methylation group (OR = 2.512, 95% CI 1.135, 5.557, P = 0.023). The risk of extra-thyroidal extension is almost 3 times in HIN1 heterogeneous methylation group (OR = 2.607, 95% CI 1.138, 5.971, P = 0.023). Conclusion Five of twenty-four genes were found frequently methylated in human thyroid cancer. Based on 5 genes panel analysis, epigenetic heterogeneity is an universal event. Epigenetic heterogeneity is associated with cancer development and progression.
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Affiliation(s)
- Chaofan Zhu
- Department of Head and Neck Surgery, Peking University Cancer Hospital and Institute, Beijing, China.,Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, China
| | - Meiying Zhang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, China
| | - Qian Wang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, China
| | - Jin Jen
- Genome Analysis Core, Medical Genome Facility, Center for Individualized Medicine, Mayo Clinic, Rochester, MN, United States
| | - Baoguo Liu
- Department of Head and Neck Surgery, Peking University Cancer Hospital and Institute, Beijing, China
| | - Mingzhou Guo
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, China.,State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital, Beijing, China
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23
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Reye G, Huang X, Britt KL, Meinert C, Blick T, Xu Y, Momot KI, Lloyd T, Northey JJ, Thompson EW, Hugo HJ. RASSF1A Suppression as a Potential Regulator of Mechano-Pathobiology Associated with Mammographic Density in BRCA Mutation Carriers. Cancers (Basel) 2021; 13:cancers13133251. [PMID: 34209669 PMCID: PMC8269117 DOI: 10.3390/cancers13133251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/23/2021] [Accepted: 06/26/2021] [Indexed: 01/26/2023] Open
Abstract
High mammographic density (MD) increases breast cancer (BC) risk and creates a stiff tissue environment. BC risk is also increased in BRCA1/2 gene mutation carriers, which may be in part due to genetic disruption of the tumour suppressor gene Ras association domain family member 1 (RASSF1A), a gene that is also directly regulated by tissue stiffness. High MD combined with BRCA1/2 mutations further increase breast cancer risk, yet BRCA1/2 mutations alone or in combination do not increase MD. The molecular basis for this additive effect therefore remains unclear. We studied the interplay between MD, stiffness, and BRCA1/2 mutation status in human mammary tissue obtained after prophylactic mastectomy from women at risk of developing BC. Our results demonstrate that RASSF1A expression increased in MCF10DCIS.com cell cultures with matrix stiffness up until ranges corresponding with BiRADs 4 stiffnesses (~16 kPa), but decreased in higher stiffnesses approaching malignancy levels (>50 kPa). Similarly, higher RASSF1A protein was seen in these cells when co-cultivated with high MD tissue in murine biochambers. Conversely, local stiffness, as measured by collagen I versus III abundance, repressed RASSF1A protein expression in BRCA1, but not BRCA2 gene mutated tissues; regional density as measured radiographically repressed RASSF1A in both BRCA1/2 mutated tissues. The combinatory effect of high MD and BRCA mutations on breast cancer risk may be due to RASSF1A gene repression in regions of increased tissue stiffness.
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Affiliation(s)
- Gina Reye
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD 4006, Australia; (G.R.); (X.H.); (T.B.); (E.W.T.)
- Translational Research Institute, Woolloongabba, QLD 4102, Australia
| | - Xuan Huang
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD 4006, Australia; (G.R.); (X.H.); (T.B.); (E.W.T.)
- Translational Research Institute, Woolloongabba, QLD 4102, Australia
| | - Kara L. Britt
- Peter MacCallum Cancer Centre, Melbourne, VIC 3000, Australia;
| | - Christoph Meinert
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, QLD 4029, Australia;
- Gelomics Pty. Ltd., Brisbane, QLD 4059, Australia
| | - Tony Blick
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD 4006, Australia; (G.R.); (X.H.); (T.B.); (E.W.T.)
- Translational Research Institute, Woolloongabba, QLD 4102, Australia
| | - Yannan Xu
- Central Analytical Research Facility, Queensland University of Technology, Brisbane, QLD 4000, Australia;
| | - Konstantin I. Momot
- Faculty of Science, School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia;
| | - Thomas Lloyd
- Department of Radiology, The Princess Alexandra Hospital, Woollongabba, QLD 4102, Australia;
| | - Jason J. Northey
- Department of Surgery, University of California San Francisco, San Francisco, CA 94143, USA;
| | - Erik W. Thompson
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD 4006, Australia; (G.R.); (X.H.); (T.B.); (E.W.T.)
- Translational Research Institute, Woolloongabba, QLD 4102, Australia
| | - Honor J. Hugo
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD 4006, Australia; (G.R.); (X.H.); (T.B.); (E.W.T.)
- Translational Research Institute, Woolloongabba, QLD 4102, Australia
- School of Health and Behavioural Sciences, University of the Sunshine Coast, Sippy Downs, QLD 4556, Australia
- School of Medicine and Dentistry, Griffith University, Birtinya, QLD 4575, Australia
- Correspondence:
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24
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Rajgarhia A, Ayasolla KR, Zaghloul N, Lopez Da Re JM, Miller EJ, Ahmed M. Extracellular Superoxide Dismutase (EC-SOD) Regulates Gene Methylation and Cardiac Fibrosis During Chronic Hypoxic Stress. Front Cardiovasc Med 2021; 8:669975. [PMID: 34136546 PMCID: PMC8202000 DOI: 10.3389/fcvm.2021.669975] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/16/2021] [Indexed: 12/12/2022] Open
Abstract
Chronic hypoxic stress induces epigenetic modifications mainly DNA methylation in cardiac fibroblasts, inactivating tumor suppressor genes (RASSF1A) and activating kinases (ERK1/2) leading to fibroblast proliferation and cardiac fibrosis. The Ras/ERK signaling pathway is an intracellular signal transduction critically involved in fibroblast proliferation. RASSF1A functions through its effect on downstream ERK1/2. The antioxidant enzyme, extracellular superoxide dismutase (EC-SOD), decreases oxidative stress from chronic hypoxia, but its effects on these epigenetic changes have not been fully explored. To test our hypothesis, we used an in-vitro model: wild-type C57B6 male mice (WT) and transgenic males with an extra copy of human hEC-SOD (TG). The studied animals were housed in hypoxia (10% O2) for 21 days. The right ventricular tissue was studied for cardiac fibrosis markers using RT-PCR and Western blot analyses. Primary C57BL6 mouse cardiac fibroblast tissue culture was used to study the in-vitro model, the downstream effects of RASSF-1 expression and methylation, and its relation to ERK1/2. Our findings showed a significant increase in cardiac fibrosis markers: Collagen 1, alpha smooth muscle actin (ASMA), and SNAIL, in the WT hypoxic animals as compared to the TG hypoxic group (p < 0.05). The expression of DNA methylation enzymes (DNMT 1&3b) was significantly increased in the WT hypoxic mice as compared to the hypoxic TG mice (p < 0.001). RASSF1A expression was significantly lower and ERK1/2 was significantly higher in hypoxia WT compared to the hypoxic TG group (p < 0.05). Use of SiRNA to block RASSF1A gene expression in murine cardiac fibroblast tissue culture led to increased fibroblast proliferation (p < 0.05). Methylation of the RASSF1A promoter region was significantly reduced in the TG hypoxic group compared to the WT hypoxic group (0.59 vs. 0.75, respectively). Based on our findings, we can speculate that EC-SOD significantly attenuates RASSF1A gene methylation and can alleviate cardiac fibrosis induced by hypoxia.
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Affiliation(s)
- Ayan Rajgarhia
- School of Medicine, Children's Mercy Hospital and University of Missouri-Kansas City, Kansas City, MO, United States
| | | | - Nahla Zaghloul
- Neonatal Division, University of Arizona, Tucson, AZ, United States
| | - Jorge M Lopez Da Re
- Neonatal Division, Orlando, Nemours Children's Hospital, Orlando, FL, United States
| | | | - Mohamed Ahmed
- Neonatal Division, University of Arizona, Tucson, AZ, United States
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25
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McKenna S, García-Gutiérrez L. Resistance to Targeted Therapy and RASSF1A Loss in Melanoma: What Are We Missing? Int J Mol Sci 2021; 22:5115. [PMID: 34066022 PMCID: PMC8150731 DOI: 10.3390/ijms22105115] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 04/26/2021] [Accepted: 05/06/2021] [Indexed: 12/20/2022] Open
Abstract
Melanoma is one of the most aggressive forms of skin cancer and is therapeutically challenging, considering its high mutation rate. Following the development of therapies to target BRAF, the most frequently found mutation in melanoma, promising therapeutic responses were observed. While mono- and combination therapies to target the MAPK cascade did induce a therapeutic response in BRAF-mutated melanomas, the development of resistance to MAPK-targeted therapies remains a challenge for a high proportion of patients. Resistance mechanisms are varied and can be categorised as intrinsic, acquired, and adaptive. RASSF1A is a tumour suppressor that plays an integral role in the maintenance of cellular homeostasis as a central signalling hub. RASSF1A tumour suppressor activity is commonly lost in melanoma, mainly by aberrant promoter hypermethylation. RASSF1A loss could be associated with several mechanisms of resistance to MAPK inhibition considering that most of the signalling pathways that RASSF1A controls are found to be altered targeted therapy resistant melanomas. Herein, we discuss resistance mechanisms in detail and the potential role for RASSF1A reactivation to re-sensitise BRAF mutant melanomas to therapy.
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Affiliation(s)
| | - Lucía García-Gutiérrez
- Systems Biology Ireland, School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland;
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26
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Karamitrousis EI, Balgkouranidou I, Xenidis N, Amarantidis K, Biziota E, Koukaki T, Trypsianis G, Karayiannakis A, Bolanaki H, Kolios G, Lianidou E, Kakolyris S. Prognostic Role of RASSF1A, SOX17 and Wif-1 Promoter Methylation Status in Cell-Free DNA of Advanced Gastric Cancer Patients. Technol Cancer Res Treat 2021; 20:1533033820973279. [PMID: 33928818 PMCID: PMC8113658 DOI: 10.1177/1533033820973279] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Epigenetic modification of several genes is a key component in the development of gastric cancer. The methylation status of RASSF1A, SOX17 and Wif-1 genes was evaluated in the cell free circulating DNA of 70 patients with advanced gastric cancer, using methylation-specific PCR. Patients with higher cell-free DNA concentration seem to have lower PFS, than patients with lower cell-free DNA concentration (p = 0.001). RASSF1A was the tumor suppressor gene, most frequently methylated in metastatic gastric cancer patients, followed by SOX17 and Wif-1 (74.3%, 60.0% and 47.1%, respectively). Patients having the SOX17 promoter methylated, had lower progression free survival and overall survival, than unmethylated ones (p < 0.001). Patients having the Wif-1 promoter methylated, had lower progression free survival and overall survival, than unmethylated ones (p = 0.001). Patients having the RASSF1A promoter methylated, had lower progression free survival and overall survival, than unmethylated ones (p = 0.004). Promoter methylation of the examined genes was significantly associated with a decrease in progression free survival and overall survival, comparing to that of patients without methylation. Simultaneous methylation of the above genes was associated with even worse progression free survival and overall survival. The methylation of RASSF1A, SOX-17 and Wif-1 and genes, is a frequent epigenetic event in patients with advanced gastric cancer.
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Affiliation(s)
| | - Ioanna Balgkouranidou
- Department of Oncology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Nikolaos Xenidis
- Department of Oncology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Kyriakos Amarantidis
- Department of Oncology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Eirini Biziota
- Department of Oncology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Triantafyllia Koukaki
- Department of Oncology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Grigorios Trypsianis
- Department of Medical Statistics, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Anastasios Karayiannakis
- Second Department of Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Helen Bolanaki
- Second Department of Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - George Kolios
- Laboratory of Pharmacology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Evi Lianidou
- Department of Chemistry, Analysis of Circulating Tumor Cells, Lab of Analytical Chemistry, University of Athens, Athens, Greece
| | - Stylianos Kakolyris
- Department of Oncology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
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27
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Huang Y, Zhou C, Wen H, Chen Y, Xie Y, Lan X, Lin J, Huang X, Mo Y, Yang C, Wang Q, Wang C. Jianpi-Huayu Formula Inhibits Development of Hepatocellular Carcinoma by Regulating Expression of miR-602, Which Targets the RASSF1A Gene. Integr Cancer Ther 2021; 19:1534735419900804. [PMID: 32046536 PMCID: PMC7016307 DOI: 10.1177/1534735419900804] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The traditional Chinese medicine formula Jianpi-Huayu (JPHY) has been reported to be effective in the treatment of hepatocellular carcinoma (HCC). However, its underlying mechanism remains unclear. In this article, we employed an orthotopic transplantation model in nude mice to explore whether JPHY could inhibit the development of HCC by regulating miR-602, which targets the Ras association domain-containing protein 1A (RASSF1A) pathway. HCC SMMC-7721 cells were treated with JPHY to test whether the RASSF1A gene as mediated by miR-602 affected the proliferation and apoptosis of tumor cells. We subsequently detected miR-602, RASSF1A, and tumor cell apoptosis-related markers in cells and liver tumor tissues. We observed that mice treated with JPHY had smaller tumors and higher survival rates than untreated ones. Similarly, JPHY-treated SMMC-7721 cells exhibited alterations in morphology and higher cytotoxicity compared with the control group. Furthermore, we found that JPHY decreased overexpression of miR-602 and increased protein expression levels of the RASS1A gene, which in turn altered protein expression levels of tumor cell apoptosis-related genes in the cells and liver tumor tissues of drug-treated mice. These results indicated that JPHY could potentially be used to treat HCC by targeting miR-602, which targets the RASSF1A gene, which in turn plays a major role in HCC pathogenesis.
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Affiliation(s)
- Yajing Huang
- Guangzhou University of Chinese Medicine, Guangzhou, China.,Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Geriatric Institute, Guangzhou, China
| | - Cheng Zhou
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Geriatric Institute, Guangzhou, China.,South China University of Technology, Guangzhou, China
| | - Huihong Wen
- Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou, China
| | - Yongxu Chen
- Guangzhou First People's Hospital, South China University of Technology, Guangzhou, China
| | - Yingjie Xie
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Geriatric Institute, Guangzhou, China
| | - Xiaohe Lan
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Geriatric Institute, Guangzhou, China
| | - Juze Lin
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Geriatric Institute, Guangzhou, China
| | - Xuhui Huang
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Geriatric Institute, Guangzhou, China
| | - Yousheng Mo
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Cong Yang
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Qi Wang
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Changjun Wang
- Guangzhou University of Chinese Medicine, Guangzhou, China.,Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Geriatric Institute, Guangzhou, China
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28
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Wang J, Zhang X, Yang F, Yang Y, Wang T, Liu W, Zhou H, Zhao W. RASSF1A Enhances Chemosensitivity of NSCLC Cells Through Activating Autophagy by Regulating MAP1S to Inactivate Keap1-Nrf2 Pathway. Drug Des Devel Ther 2021; 15:21-35. [PMID: 33442234 PMCID: PMC7797300 DOI: 10.2147/dddt.s269277] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 11/24/2020] [Indexed: 11/23/2022]
Abstract
Objective Cisplatin (DDP) is an effective first-line therapy for non-small cell lung cancer (NSCLC) treatment; however, it can cause resistance and thus pose an obstacle to the efficacy of chemotherapy in NSCLC. This study aims to detect the effect of RASSF1A on DDP resistance of NSCLC and the underlying mechanism. Methods The expression levels of RASSF1A and microtubule-associated protein 1S (MAP1S) were investigated by qRT-PCR and Western blot and their interaction was testified by co-immunoprecipitation (Co-IP) analysis. The IC50 value of DDP on A549 and A549/DDP cells (DDP-resistant cells) was measured. A549/DDP cells were transfected with pCDNA3.1-RASSF1A, pCDNA3.1-MAP1S, or si-RASSF1A, followed by treated with DDP. Cell counting kit-8 (CCK-8) and 5-ethynyl-2'-deoxyuridine (EDU) were employed to measure cell survival rate. Western blot was applied to test the levels of autophagy-associated proteins p62, LC3II, and LC3I. Immunofluorescence staining was used to detect the green fluorescent protein (GFP)-LC3 puncta to evaluate the level of autophagy. Finally, a xenograft model in nude mice using A549/DDP cells was developed. Results RASSF1A and MAP1S were lowly expressed and positively correlated in NSCLC tissues. We observed that RASSF1A and MAP1S overexpression significantly enhanced DDP-induced effects in A549 and A549/DDP cells, including decreased cell viability, as well as increased autophagy levels. Besides, investigations into the mechanism between RASSF1A and MAP1S disclosed that RASSF1A could regulate MAP1S to inactivate the Keap1-Nrf2 pathway, thus activating autophagy to enhance chemosensitivity. Moreover, consistent results were confirmed in vivo experiments. Conclusion RASSF1A increases chemosensitivity in NSCLC by facilitating autophagy via MAP1S-mediated Keap1-Nrf2 pathway.
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Affiliation(s)
- Jincai Wang
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150086, People's Republic of China
| | - Xufeng Zhang
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150086, People's Republic of China
| | - Fang Yang
- Department of Medical Oncology, Boao Evergrande International Hospital, Qionghai, Hainan 571400, People's Republic of China
| | - Yuguang Yang
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150086, People's Republic of China
| | - Tianjiao Wang
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150086, People's Republic of China
| | - Wenming Liu
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150086, People's Republic of China
| | - Hongfeng Zhou
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150086, People's Republic of China
| | - Wei Zhao
- Department of Neurobiology, Harbin Medical University, Heilongjiang Provincial Key Laboratory of Neurobiology, Harbin, Heilongjiang, 150086, People's Republic of China
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Zhang L, Wang CMY, Zhou WP, Chen QP, Zhou S, Lei W, Deng H, Zhang L, Liu GC. Dynamic Changes of Fetal-Derived Hypermethylated RASSF1A and Septin 9 Sequences in Maternal Plasma. Reprod Sci 2021; 28:1194-1199. [PMID: 33417202 DOI: 10.1007/s43032-020-00416-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 11/25/2020] [Indexed: 12/13/2022]
Abstract
DNA methylation has a tissue-specific feature, and placenta has distinct methylation patterns from peripheral blood cells. Although fetal/placental-derived cell free DNA (cfDNA) in the maternal blood has been reported in recent decades, systematic exploration of dynamic changes of the placental epigenetic signatures across gestation is lacking. The primary goal of this study was to characterize prenatal and postnatal methylation levels of placental-sourced RASSF1A and Septin 9 sequences in maternal plasma. Here, we used a quantitative methylation-sensitive PCR (qMS-PCR) assay to check the methylation status of RASSF1A and Septin 9 in placental tissues of pregnant women and plasma samples from non-pregnant individuals. Then, we examined the methylation levels of the two targets in maternal plasma from expectant women at different gestational ages and postdelivery. Hypermethylated RASSF1A and Septin 9 were identified in placental samples but undetectable in peripheral blood of healthy non-pregnant women. Further, hypermethylated RASSF1A sequence was found in all three trimesters of pregnancy except for early gestation (8 weeks). Moreover, methylation scores of the two targets increased as pregnancy progressed. In addition, hypermethylated RASSF1A sequence was detectable in maternal plasma from 12 h (one case) to 24 h postdelivery (three cases) in 18 pregnant women. Our data on the variation of fetal-sourced methylated RASSF1A levels in maternal plasma in relation to gestational age provide a useful basis for improving the reliability of the methylation assay for non-invasive prenatal diagnosis (NIPD) in clinical practice.
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Affiliation(s)
- Li Zhang
- Department of Obstetrics, Guangdong Women and Children Hospital, Guangzhou, 511400, China
| | - Chen-Mei-Yi Wang
- Department of Obstetrics, Guangdong Women and Children Hospital, Guangzhou, 511400, China
| | - Wei-Ping Zhou
- Translational Medicine Center, Guangdong Women and Children Hospital, Guangzhou, 511400, China
| | - Qiu-Ping Chen
- Translational Medicine Center, Guangdong Women and Children Hospital, Guangzhou, 511400, China
| | - Shuai Zhou
- Translational Medicine Center, Guangdong Women and Children Hospital, Guangzhou, 511400, China
| | - Wen Lei
- Translational Medicine Center, Guangdong Women and Children Hospital, Guangzhou, 511400, China
| | - Hua Deng
- Translational Medicine Center, Guangdong Women and Children Hospital, Guangzhou, 511400, China
| | - Liang Zhang
- Translational Medicine Center, Guangdong Women and Children Hospital, Guangzhou, 511400, China.
| | - Guo-Cheng Liu
- Department of Obstetrics, Guangdong Women and Children Hospital, Guangzhou, 511400, China.
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Donninger H, Harrell-Stewart D, Clark GJ. Detection of Endogenous RASSF1A Interacting Proteins. Methods Mol Biol 2021; 2262:303-310. [PMID: 33977485 DOI: 10.1007/978-1-0716-1190-6_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
RASSF1A is a Ras effector that promotes the anti-proliferative properties of Ras. It acts as a scaffold protein that regulates several pro-apoptotic signaling pathways, thereby linking Ras to their regulation. However, accumulating evidence suggests that RASSF1A functions as a regulator of other additional biological processes, such as DNA repair and transcription, thereby implicating Ras in the modulation of these biological processes. The mechanisms by which RASSF1A modulates these processes is not fully understood but likely involves interacting with other effectors associated with these functions and coordinating their activity. Thus, to fully understand how RASSF1A manifests its activity, it is critical to identify RASSF1A interacting partners.Unfortunately, the reagents available for the detection of RASSF1A are of poor quality and also exhibit low sensitivity. Here we describe an immunoprecipitation protocol, taking into consideration the limitations of currently available reagents, that can reliably detect the endogenous interaction between RASSF1A and its binding partners.
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Affiliation(s)
- Howard Donninger
- Department of Medicine, University of Louisville, Louisville, KY, USA
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | | | - Geoffrey J Clark
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA.
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, USA.
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Harrell Stewart DR, Schmidt ML, Donninger H, Clark GJ. The RASSF1A Tumor Suppressor Binds the RasGAP DAB2IP and Modulates RAS Activation in Lung Cancer. Cancers (Basel) 2020; 12:cancers12123807. [PMID: 33348649 PMCID: PMC7766191 DOI: 10.3390/cancers12123807] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/13/2020] [Accepted: 12/10/2020] [Indexed: 12/30/2022] Open
Abstract
Simple Summary The RASSF1A tumor suppressor can serve as a pro-apoptotic effector of the K-RAS oncoprotein. It is frequently inactivated epigenetically in lung cancer, and genetic inactivation of RASSF1A in transgenic mice enhances the ability of mutant K-RAS to promote tumorigenesis. Here we show that RASSF1A complexes with and stabilizes the protein DAB2IP. DAB2IP is a tumor suppressor itself and acts, in part, as a negative regulator (GAP) for RAS. Thus, loss of RASSF1A results in the reduced expression of DAB2IP, which promotes the activation of wild type RAS. Therefore, RASSF1A negative cells are likely to show enhanced RAS activity. This may be the first example of a RAS effector being able to back-regulate RAS activity. Abstract Lung cancer is the leading cause of cancer-related death worldwide. Lung cancer is commonly driven by mutations in the RAS oncogenes, the most frequently activated oncogene family in human disease. RAS-induced tumorigenesis is inhibited by the tumor suppressor RASSF1A, which induces apoptosis in response to hyperactivation of RAS. RASSF1A expression is suppressed in cancer at high rates, primarily owing to promoter hypermethylation. Recent reports have shown that loss of RASSF1A expression uncouples RAS from apoptotic signaling in vivo, thereby enhancing tumor aggressiveness. Moreover, a concomitant upregulation of RAS mitogenic signaling upon RASSF1A loss has been observed, suggesting RASSF1A may directly regulate RAS activation. Here, we present the first mechanistic evidence for control of RAS activation by RASSF1A. We present a novel interaction between RASSF1A and the Ras GTPase Activating Protein (RasGAP) DAB2IP, an important negative regulator of RAS. Using shRNA-mediated knockdown and stable overexpression approaches, we demonstrate that RASSF1A upregulates DAB2IP protein levels in NSCLC cells. Suppression of RASSF1A and subsequent downregulation of DAB2IP enhances GTP loading onto RAS, thus increasing RAS mitogenic signaling in both mutant- and wildtype-RAS cells. Moreover, co-suppression of RASSF1A and DAB2IP significantly enhances in vitro and in vivo growth of wildtype-RAS cells. Tumors expressing wildtype RAS, therefore, may still suffer from hyperactive RAS signaling when RASSF1A is downregulated. This may render them susceptible to the targeted RAS inhibitors currently in development.
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Affiliation(s)
- Desmond R. Harrell Stewart
- Department of Pharmacology & Toxicology, University of Louisville School of Medicine, Louisville, KY 40202, USA; (D.R.H.S.); (M.L.S.)
| | - M. Lee Schmidt
- Department of Pharmacology & Toxicology, University of Louisville School of Medicine, Louisville, KY 40202, USA; (D.R.H.S.); (M.L.S.)
| | - Howard Donninger
- Department of Medicine, University of Louisville School of Medicine, Louisville, KY 40202, USA;
| | - Geoffrey J. Clark
- Department of Pharmacology & Toxicology, University of Louisville School of Medicine, Louisville, KY 40202, USA; (D.R.H.S.); (M.L.S.)
- Correspondence:
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32
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Shi J, Chen X, Zhang L, Fang X, Liu Y, Zhu X, Zhang H, Fan L, Gu J, Zhang S, She B, Han H, Yi X. Performance Evaluation of SHOX2 and RASSF1A Methylation for the Aid in Diagnosis of Lung Cancer Based on the Analysis of FFPE Specimen. Front Oncol 2020; 10:565780. [PMID: 33425721 PMCID: PMC7793934 DOI: 10.3389/fonc.2020.565780] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 11/09/2020] [Indexed: 12/28/2022] Open
Abstract
Emerging molecular diagnostic methods are more sensitive and objective, which can overcome the intrinsic failings of morphological diagnosis. Here, a RT-PCR-based in vitro diagnostic test kit (LungMe®) was developed and characterized to simultaneously quantify the DNA methylation of SHOX2 and RASSF1A in FFPE tissue specimens. The clinical manifestations were evaluated in 251 FFPE samples with specificity and sensitivity of 90.4 and 89.8%, respectively. Furthermore, the quantitative analysis shows that the degree of SHOX2 methylation was correlated with the stages of lung cancer, but not in the case of RASSF1A. Our observation indicated that the DNA methylation of SHOX2 and RASSF1A may play different roles in cancer development. Comparison of the methylation levels of SHOX2 and RASSF1A between cancer and cancer-adjacent specimens (n = 30), showed they have “epigenetic field defect”. As additional clinical validation, the hypermethylation of SHOX2 and RASSF1A was detected not only in surgical operative specimens, but also in histopathological negative puncture biopsies. SHOX2 and RASSF1A methylation detection can be used to increase sensitivity and NPV, which provide us with a more accurate method of differential diagnosis and are likely to be rapidly applied in clinical examinations.
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Affiliation(s)
- Juanhong Shi
- Department of Pathology, Tongji Hospital, Tongji University, Shianghai, China
| | - Xue Chen
- Department of Pathology, Tongji Hospital, Tongji University, Shianghai, China
| | - Long Zhang
- Department of Pathology, Tongji Hospital, Tongji University, Shianghai, China
| | - Xia Fang
- Department of Pulmonary and Critical Care Medicine, Dongfang Hospital Affiliated to Tongji University, Shanghai, China
| | - Yuting Liu
- Department of Pathology, Tongji Hospital, Tongji University, Shianghai, China
| | - Xuyou Zhu
- Department of Pathology, Tongji Hospital, Tongji University, Shianghai, China
| | - Haoyang Zhang
- Department of Pathology, Tongji Hospital, Tongji University, Shianghai, China
| | - Lichao Fan
- Department of Pulmonary and Critical Care Medicine, Shanghai Pulmonary Hospital Affiliated to Tongji University, Shanghai, China
| | - Jun Gu
- Department of Pathology, Tongji Hospital, Tongji University, Shianghai, China
| | - Suxia Zhang
- Department of Pathology, Tongji Hospital, Tongji University, Shianghai, China
| | - Bin She
- Academic Development, Tellgen Corporation, Shanghai, China
| | - Hongxiu Han
- Department of Pathology, Tongji Hospital, Tongji University, Shianghai, China
| | - Xianghua Yi
- Department of Pathology, Tongji Hospital, Tongji University, Shianghai, China
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Deng Q, Su B, Ji X, Fang Q, Zhou S, Zhou C. Predictive value of unmethylated RASSF1A on disease progression in non-small cell lung cancer patients receiving pemetrexed-based chemotherapy. Cancer Biomark 2020; 27:313-323. [PMID: 31839603 DOI: 10.3233/cbm-190258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND OBJECTIVE Chemotherapy remains the basis of the treatment of lung cancer, and screening biomarkers with predictive value for chemotherapy is of great interest. The present study focused on status of genes methylation in NSCLC patients receiving pemetrexed- or gemcitabine-based chemotherapy. PATIENTS AND METHODS Promoter methylation of Ras association domain family (RASSF1A) and short stature homeobox 2 (SHOX2) was examined in bronchoalveolar lavage (BAL) from 117 NSCLC patients treated with chemotherapy. Multivariate analysis was used to identify the predictive value of gene methylation. Progression-free survival (PFS) rather than overall survival (OS) was used as the clinical outcome to minimize the impact of chemotherapy on gene methylation. RESULTS The methylation of RASSF1A and SHOX2 was significantly associated with shorter PFS (RASSF1A: HR = 2.355, 95% CI: 1.533-3.617, P< 0.0001; SHOX2: HR = 2.123, 95% CI: 1.392-3.236, P= 0.0004). After adjusting for confounding factors, RASSF1A methylation was still a predictive factor for PFS (HR = 1.765, 95% CI: 1.064-2.928, P= 0.0278). In the pemetrexed group, unmethylated RASSF1A could be used to predict longer PFS (P= 0.0001), and no predictive value was found in the gemcitabine group. CONCLUSION Unmethylated RASSF1A is a favorable prognostic indicator for patients receiving pemetrexed doublets. Because of the promoting effect of most chemotherapeutic drugs on gene methylation, unmethylated RASSF1A is not suitable as a predictor for gemcitabine doublets.
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Affiliation(s)
- Qinfang Deng
- Medical College of Soochow University, Soochow, China.,Department of Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China.,Medical College of Soochow University, Soochow, China
| | - Bo Su
- Central Laboratory, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China.,Medical College of Soochow University, Soochow, China
| | - Xianxiu Ji
- Department of Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qiyu Fang
- Department of Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Songwen Zhou
- Department of Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Caicun Zhou
- Medical College of Soochow University, Soochow, China.,Department of Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
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Jeon HJ, Oh JS. RASSF1A Regulates Spindle Organization by Modulating Tubulin Acetylation via SIRT2 and HDAC6 in Mouse Oocytes. Front Cell Dev Biol 2020; 8:601972. [PMID: 33195286 PMCID: PMC7649257 DOI: 10.3389/fcell.2020.601972] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 10/08/2020] [Indexed: 11/13/2022] Open
Abstract
Dynamic changes in microtubules during cell cycle progression are essential for spindle organization to ensure proper segregation of chromosomes. There is growing evidence that post translational modifications of tubulins are the key factors that contribute to microtubule dynamics. However, how dynamic properties of microtubules are regulated in mouse oocytes is unclear. Here, we show that tumor suppressor RASSF1A is required for tubulin acetylation by regulating SIRT2 and HDAC6 during meiotic maturation in mouse oocytes. We found that RASSF1A was localized at the spindle microtubules in mouse oocytes. Knockdown of RASSF1A perturbed meiotic progression by impairing spindle organization and chromosome alignment. Moreover, RASSF1A knockdown disrupted kinetochore-microtubule (kMT) attachment, which activated spindle assembly checkpoint and increased the incidence of aneuploidy. In addition, RASSF1A knockdown decreased tubulin acetylation by increasing SIRT2 and HDAC6 levels. Notably, defects in spindle organization and chromosome alignment after RASSF1A knockdown were rescued not only by inhibiting SIRT2 or HDAC6 activity, but also by overexpressing acetylation mimicking K40Q tubulin. Therefore, our results demonstrated that RASSF1A regulates SIRT2- and HDAC6-mediated tubulin acetylation for proper spindle organization during oocyte meiotic maturation.
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Affiliation(s)
- Hyuk-Joon Jeon
- Department of Integrative Biotechnology, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon, South Korea
| | - Jeong Su Oh
- Department of Integrative Biotechnology, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon, South Korea
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Chen D, Yan Y, Xie J, Pan J, Chen Y, Li Q, Yuan Y, Zeng W, Xing W. Amide-type local anesthetics may suppress tumor cell proliferation and sensitize Human Hepatocellular Carcinoma Cells to Cisplatin via upregulation of RASSF1A expression and demethylation. J Cancer 2020; 11:7312-7319. [PMID: 33193895 PMCID: PMC7646167 DOI: 10.7150/jca.46630] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 10/10/2020] [Indexed: 12/18/2022] Open
Abstract
Background: It has been reported that local anesthetics are toxic to various types of cells. Furthermore, several local anesthetics have been confirmed to exert demethylation effects and regulate the proliferation of human cancer cells. Our previous findings suggest that lidocaine may exert potential antitumor activity and enhance the sensitivity of cisplatin to hepatocellular carcinoma in vitro and in vivo. A recent study proved that lidocaine sensitizes breast cancer cells to cisplatin via upregulation of RASSF1A, a promotor of tumor suppressive gene (TSG) demethylation. We sought to determine whether amide-type local anesthetics (lidocaine, ropivacaine and bupivacaine) exert growth-inhibitory effects on human hepatoma cells and to determine whether amide-type local anesthetics sensitize human hepatoma cells to cisplatin-mediated cytotoxicity via upregulation of RASSF1A expression. Methods: Human hepatoma cell lines HepG2 and BEL-7402 were incubated with lidocaine, ropivacaine and bupivacaine. The viability of local anesthetic-treated cells with or without cisplatin was investigated. Further, we evaluated RASSF1A expression after treatment of HepG2 and BEL-7402 cells with three local anesthetics and determined the influence of RASSF1A expression on the toxicity of cisplatin to these cells. Results: The viability of HepG2 and BEL-7402 cells was significantly decreased by treatment with amide-type local anesthetics (lidocaine, ropivacaine and bupivacaine). In these cells, the combination treatment with cisplatin and local anesthetics exhibited a stronger reduction in viability. Lidocaine, ropivacaine and bupivacaine promoted a significant increase in RASSF1A expression and a decrease in RASSF1A methylation. The combined treatment with both local anesthetics and cisplatin resulted in a significantly lower level of HepG2 and BEL-7402 cell viability than that with singular local anesthetics or cisplatin treatment. Moreover, local anesthetics enhanced the cytotoxicity of cisplatin against HepG2 and BEL-7402 cells, accompanied by an increase in RASSF1A expression. Conclusions: These data indicated that amide-type local anesthetics (lidocaine, ropivacaine and bupivacaine) have growth-inhibitory and demethylation effects in human hepatoma cells. We also found that these amide local anesthetics may enhance the cytotoxicity of cisplatin in human hepatocellular carcinoma cells possibly via upregulation of RASSF1A expression and demethylation.
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Affiliation(s)
- Dongtai Chen
- Department of Anesthesiology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Yan Yan
- Department of Anesthesiology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China.,Department of Anesthesiology, Huizhou Municipal Central Hospital, Huizhou 516001, China
| | - Jingdun Xie
- Department of Anesthesiology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Jiahao Pan
- Department of Anesthesiology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Yonghua Chen
- Department of Anesthesiology, Peking University Shenzhen Hospital, Shenzhen 518000, China
| | - Qiang Li
- Department of Anesthesiology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Yunfei Yuan
- Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Weian Zeng
- Department of Anesthesiology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Wei Xing
- Department of Anesthesiology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
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Coppedè F, Ricciardi R, Lopomo A, Stoccoro A, De Rosa A, Guida M, Petrucci L, Maestri M, Lucchi M, Migliore L. Investigation of MLH1, MGMT, CDKN2A, and RASSF1A Gene Methylation in Thymomas From Patients With Myasthenia Gravis. Front Mol Neurosci 2020; 13:567676. [PMID: 33192293 PMCID: PMC7645111 DOI: 10.3389/fnmol.2020.567676] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 09/18/2020] [Indexed: 01/07/2023] Open
Abstract
A feature of thymomas is their frequent association with myasthenia gravis (MG), an autoimmune disease characterized by the production of autoantibodies directed to different targets at the neuromuscular junction. Indeed, almost 30-40% of thymomas are found in patients with a type of MG termed thymoma-associated MG (TAMG). Recent studies suggest that TAMG-associated thymomas could represent a molecularly distinct subtype of thymic epithelial tumors (TETs), but few data are still available concerning the epigenetic modifications occurring in TAMG tissues. The promoter methylation levels of DNA repair (MLH1 and MGMT) and tumor suppressor genes (CDKN2A and RASSF1A) have been frequently investigated in TETs, but methylation data in TAMG tissues are scarce and controversial. To further address this issue, we investigated MLH1, MGMT, CDKN2A, and RASSF1A methylation levels in blood samples and surgically resected thymomas from 69 patients with TAMG and in the adjacent normal thymus available from 44 of them. Promoter methylation levels of MLH1, MGMT, CDKN2A, and RASSF1A genes were not increased in cancer with respect to healthy tissues and did not correlate with the histological or pathological features of the tumor or with the MG symptoms. The present study suggests that hypermethylation of these genes is not frequent in TAMG tissues.
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Affiliation(s)
- Fabio Coppedè
- Department of Translational Research and of New Surgical and Medical Technologies, Medical Genetics Laboratory, University of Pisa, Pisa, Italy
| | - Roberta Ricciardi
- Department of Clinical and Experimental Medicine, Neurology Unit, University of Pisa, Pisa, Italy.,Division of Thoracic Surgery, Cardiothoracic and Vascular Surgery Department, Pisa University Hospital, Pisa, Italy
| | - Angela Lopomo
- Department of Translational Research and of New Surgical and Medical Technologies, Medical Genetics Laboratory, University of Pisa, Pisa, Italy
| | - Andrea Stoccoro
- Department of Translational Research and of New Surgical and Medical Technologies, Medical Genetics Laboratory, University of Pisa, Pisa, Italy
| | - Anna De Rosa
- Department of Clinical and Experimental Medicine, Neurology Unit, University of Pisa, Pisa, Italy
| | - Melania Guida
- Department of Clinical and Experimental Medicine, Neurology Unit, University of Pisa, Pisa, Italy
| | - Loredana Petrucci
- Department of Clinical and Experimental Medicine, Neurology Unit, University of Pisa, Pisa, Italy
| | - Michelangelo Maestri
- Department of Clinical and Experimental Medicine, Neurology Unit, University of Pisa, Pisa, Italy
| | - Marco Lucchi
- Division of Thoracic Surgery, Cardiothoracic and Vascular Surgery Department, Pisa University Hospital, Pisa, Italy.,Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, Pisa, Italy
| | - Lucia Migliore
- Department of Translational Research and of New Surgical and Medical Technologies, Medical Genetics Laboratory, University of Pisa, Pisa, Italy
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Roßwag S, Thiede G, Sleeman JP, Thaler S. RASSF1A Suppresses Estrogen-Dependent Breast Cancer Cell Growth through Inhibition of the Yes-Associated Protein 1 (YAP1), Inhibition of the Forkhead Box Protein M1 (FOXM1), and Activation of Forkhead Box Transcription Factor 3A (FOXO3A). Cancers (Basel) 2020; 12:cancers12092689. [PMID: 32967092 PMCID: PMC7566002 DOI: 10.3390/cancers12092689] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 09/09/2020] [Indexed: 12/22/2022] Open
Abstract
The estrogen receptor alpha (ERα) is expressed by the majority of breast cancers and plays an important role in breast cancer development and tumor outgrowth. Although ERα is well known to be a specific and efficient therapeutic target, the molecular mechanisms that are responsible for the control of ERα expression and function in the context of breast cancer initiation and progression are complex and not completely elucidated. In previous work, we have demonstrated that the tumor suppressor RASSF1A inhibits ERα expression and function in ERα-positive breast cancer cells through an AKT-dependent mechanism. Transcriptional activators such as forkhead box protein M1 (FOXM1) and forkhead transcription factor 3A (FOXO3A) and signaling pathways such as the Hippo pathway are also known to modulate ERα expression and activity. Here we report that RASSF1A acts as an inhibitor of ERα-driven breast cancer cell growth through a complex, hierarchically organized network that initially involves suppression of the Hippo effector Yes-associated protein 1 (YAP1), which is followed by inhibition of AKT1 activity, increased FOXO3A activity as well as a blockade of FOXM1 and ERα expression. Together our findings provide important new mechanistic insights into how the loss of RASSF1A contributes to ERα+ breast cancer initiation and progression.
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Affiliation(s)
- Sven Roßwag
- European Center for Angioscience, Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany; (S.R.); (G.T.); (J.P.S.)
| | - Gitta Thiede
- European Center for Angioscience, Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany; (S.R.); (G.T.); (J.P.S.)
| | - Jonathan P. Sleeman
- European Center for Angioscience, Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany; (S.R.); (G.T.); (J.P.S.)
- KIT Campus Nord, Institute for Toxicology and Genetics, 76344 Karlsruhe, Germany
| | - Sonja Thaler
- European Center for Angioscience, Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany; (S.R.); (G.T.); (J.P.S.)
- Correspondence: ; Tel.: +49-621-383-71599; Fax: +49-621-383-71451
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Hu F, Chen L, Bi MY, Zheng L, He JX, Huang YZ, Zhang Y, Zhang XL, Guo Q, Luo Y, Tang WR, Sheng MM. Potential of RASSF1A promoter methylation as a biomarker for colorectal cancer: Meta-analysis and TCGA analysis. Pathol Res Pract. 2020;216:153009. [PMID: 32703486 DOI: 10.1016/j.prp.2020.153009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 04/16/2020] [Accepted: 05/10/2020] [Indexed: 12/24/2022]
Abstract
The RAS association domain family protein 1A (RASSF1A) is a tumor suppressor in colorectal cancer (CRC), and is often inactived by hypermethylation. Therefore, we evaluated the association between RASSF1A hypermethylation and the risk and prognosis in CRC. We identified literature through searching PubMed and China National Knowledge Infrastructure databases, and then validated and supplemented the meta-analysis with TCGA analysis. Twenty-three studies involving 2886 subjects of CRC were examined. The meta-analysis showed that RASSF1A promoter methylation inferred high CRC risk (odds ratio, 6.53, 95% confidence interval 3.88-11.01, P < .001) and poor overall survival (hazard ratio 2.85, 95% CI 1.88-4.31, P < .001). The TCGA analysis suggested that effect of RASSF1A promotor methylation was affected by tumor localization (colon vs. rectum). RASSF1A promoter methylation was a predictor of high risk (OR 2.38, 95%CI 1.02-5.6, P = .046) and poor disease free survival(HR 2.25, 95%CI 1.27-3.99, P = .006)in colon adenocarcinoma, but the association was statistically insignificant in rectum adenocarcinoma(HR 1.58, 95% CI 0.69-3.59, P = .28). These results suggested RASSF1A hypermethylation is a risk and a potential prognostic biomarker in CRC.
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Peng JL, Wu JZ, Li GJ, Wu JL, Xi YM, Li XQ, Wang L. Association of RASSF1A hypermethylation with risk of HBV/HCV-induced hepatocellular carcinoma: A meta-analysis. Pathol Res Pract 2020; 216:153099. [PMID: 32853942 DOI: 10.1016/j.prp.2020.153099] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 02/19/2020] [Accepted: 03/07/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Researchers have discovered a large number of DNA methylation patterns in human cancer. These cancer-specific methylation patterns can provide information for the diagnosis, treatment, and prognosis of cancer. Methylation studies can find new biomarkers based on epigenetic analysis and apply these biomarkers to clinical oncology. Many studies on the association between RAASF1A methylation status and susceptibility to hepatitis B virus (HBV)/hepatitis C virus (HCV)-induced hepatocellular carcinoma (HCC) have reached controversial conclusions. Hence, the current review comprehensively assessed the correlation between Ras association domain family 1A (RASSF1A) methylation and the risk of the HCV/HBV-induced HCC. METHODS The appropriated publications were extracted in EMBASE, PubMed, Web of Science, Cochrane Library, and China National Knowledge Infrastructure databases using STATA 5.0 software. The odds ratios (ORs) with 95 % confidence interval (95 % CI) of RASSF1A methylation were computed. RESULTS A total of 1015 HBV/HCV-related HCC samples, 124 non-HBV/HCV-related HCC (NBNC-HCC) samples, and 1225 nontumorous controls were extracted and examined in this research. The frequency of the methylated RASSF1A in the HBV/HCV-related tumor cases displayed a significantly increased OR compared with the overall nontumor samples (OR = 19.372, 95 % CI = 11.060-33.931, P = 0.000). The frequency of the methylated RASSF1A in HBV/HCV-related neoplasm cases displayed a significantly increased OR compared with the non-HBV/HCV-related neoplasm (NBNC-neoplasm) samples (OR = 2.150, 95 % CI = 1.398-3.308, P = 0.000). Compared with normal, chronic hepatitis B or C, cirrhosis, and paracancerous samples, the pooled OR of the RASSF1A promoter methylation in the HBV/HCV-induced HCC samples was 62.785(95 % CI = 35.224-111.909), 25.07 (95 % CI = 13.85-45.36), 6.89 (95 % CI = 3.33-14.264) and 9.02 (95 % CI = 0.91-89.80), respectively. The rate of RASSF1A hypermethylation was robustly correlated with tumor size and vascular invasion, and the pooled OR was 0.346 (95 % CI = 0.210 - 0.569) and 0.081 (95 % CI = 0.022 - 0.303), respectively. CONCLUSION Results showed robust associations between RASSF1A gene methylation in promoter region and enhanced HBV/HCV-related HCC susceptibility, thereby revealing that RASSF1A methylation status may serve as an important indicator for HCC oncogenesis.
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Zhou C, Huang Y, Chen Y, Xie Y, Wen H, Tan W, Wang C. miR-602 Mediates the RASSF1A/JNK Pathway, Thereby Promoting Postoperative Recurrence in Nude Mice with Liver Cancer. Onco Targets Ther 2020; 13:6767-6776. [PMID: 32764964 PMCID: PMC7368130 DOI: 10.2147/ott.s243651] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 06/19/2020] [Indexed: 12/25/2022] Open
Abstract
Purpose At present, there are few studies on the mechanisms underlying postoperative recurrence of liver cancer, and the mechanism of action of miR-602 in postoperative recurrence of liver tumors is not clear. Our goals were to investigate the effects of miR-602 on the expression of the Ras-associated domain family 1A (RASSF1A) gene and the regulation of primary and recurrent hepatic tumors to clarify the molecular mechanisms of miR-602 in postoperative hepatocellular carcinoma. Methods We constructed a mouse liver orthotopic tumor model and a mouse liver recurrent tumor model. We measured the expression levels of the RASSF1A gene and then analyzed the effects of miR-602 on the regulation of RASSF1A. We transiently transfected the miR-602 gene into cells that stably overexpressed RASSF1A and examined relevant indicators to elucidate the mechanisms by which miR-602 regulates the RASSF1A/c-Jun N-terminal kinase (JNK) pathway in recurrence and dormancy in liver cancer. Results RASSF1A expression was inversely related to that of JNK, activating transcription factor 2 (ATF-2), and c-Jun in SMMC7721 cells stably transfected with the RASSF1A gene and in recurrent mouse tumor tissues. After transient transfection of cells with miR-602 mimic or miR-602 inhibitor, the expression of miR-602 was inversely related to that of RASSF1A. Conclusion MiR-602 might inhibit the JNK signaling pathway by inhibiting the expression of RASSF1A, thereby promoting recurrence of liver cancer after surgery. The low expression levels of miR-602 in liver cancer tissues were closely related to postoperative recurrence; they could be used as a marker to judge the prognosis of patients with liver cancer.
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Affiliation(s)
- Cheng Zhou
- School of Medicine, South China University of Technology, Guangzhou, People's Republic of China.,Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Geriatric Institute, Guangzhou, People's Republic of China
| | - Yajing Huang
- Guangzhou University of Chinese Medicine, Guangzhou, People's Republic of China
| | - Yongxu Chen
- School of Medicine, South China University of Technology, Guangzhou, People's Republic of China.,Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Geriatric Institute, Guangzhou, People's Republic of China
| | - Yingjie Xie
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, People's Republic of China
| | - Huihong Wen
- Guangzhou University of Chinese Medicine, Guangzhou, People's Republic of China
| | - Wei Tan
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Geriatric Institute, Guangzhou, People's Republic of China
| | - Changjun Wang
- School of Medicine, South China University of Technology, Guangzhou, People's Republic of China.,Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Geriatric Institute, Guangzhou, People's Republic of China
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Gong L, Yang P, Hu L, Zhang C. MiR-181b suppresses the progression of epilepsy by regulation of lncRNA ZNF883. Am J Transl Res 2020; 12:2769-2780. [PMID: 32655808 PMCID: PMC7344086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Epilepsy (EP) is a very dangerous neurological disease. MiR-181b was reported to play a regulatory role during the progression of EP. However, the mechanism by which miR-181b regulates the process of EP remains unclear. METHODS Hippocampal neurons were extracted from rats, which were treated with magnesium-free to mimic EP in vitro. CCK-8 assay was performed to test the cell viability. Gene and protein expressions in hippocampal neurons were detected by qRT-PCR, immunofluorescence and western blot, respectively. In addition, TUNEL staining was performed to test the cell apoptosis. Finally, dual luciferase report assay was used to verify the relation between miR-181b, ZNF883 and RASSF1A. RESULTS Magnesium-free significantly inhibited the proliferation of hippocampal neurons, which was reversed by miR-181b mimics. In consistent, magnesium-free induced apoptosis of cells was notably inhibited by miR-181b mimics. In addition, miR-181b suppressed the progression of EP via directly targeting RASSF1A and activating PI3K/Akt signaling. Finally, upregulation of miR-181b notably suppressed the progression of EP via regulation of ZNF883. CONCLUSION MiR-181b suppressed the progression of epilepsy via regulation of RASSF1A and lncRNA ZNF883. Thus, miR-181b might serve as a new target for treatment of EP.
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Affiliation(s)
- Lina Gong
- Department of Neurology, The Third Xiangya Hospital of Central South University Changsha 410013, Hunan, China
| | - Pu Yang
- Department of Neurology, The Third Xiangya Hospital of Central South University Changsha 410013, Hunan, China
| | - Ling Hu
- Department of Neurology, The Third Xiangya Hospital of Central South University Changsha 410013, Hunan, China
| | - Chen Zhang
- Department of Neurology, The Third Xiangya Hospital of Central South University Changsha 410013, Hunan, China
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Kong R, Sun G, Li X, Wu L, Li L, Li Y, Wang F, Xuan P, Yang S, Sun B, Hu J. Small Molecule Inhibitor C188-9 Synergistically Enhances the Demethylated Activity of Low-Dose 5-Aza-2'-Deoxycytidine Against Pancreatic Cancer. Front Oncol 2020; 10:612. [PMID: 32457835 PMCID: PMC7225308 DOI: 10.3389/fonc.2020.00612] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 04/03/2020] [Indexed: 01/26/2023] Open
Abstract
Aberrant DNA methylation, especially hypermethylation of tumor suppressor genes, has been associated with many cancers' progression. 5-Aza-2′-deoxycytidine (DAC) can reverse hypermethylation-induced gene silencing via regulating DNA methyltransferases (DNMTs) activity, In addition, low-dose of DAC was proved to exert durable antitumor effects against solid tumor cells. Nevertheless, no clinical effect of DAC has been made when fighting against pancreatic cancer. Hence, it is necessary to raise a novel therapeutic strategy that further enhance the efficacy of DAC but not increase side effect, which impede the utilization of DAC. In the present study, we have discovered that C188-9, a novel signal transduction activator of transcription (STAT) inhibitor, could improve the antitumor effects of low-dose DAC in vivo and in vitro. Further study demonstrated that such improvement was attributed to re-expression of Ras association domain family member 1A (RASSF1A), a well-known tumor suppressor gene. Bisulfite sequencing PCR (BSP) assay showed that C188-9 combined with DAC treatment could significantly reverse the hypermethylation status of RASSF1A promoter, which indicated that C188-9 could enhance the demethylation efficacy of DAC. Our data demonstrated that DNA methyltransferase 1 (DNMT1) was the underlying mechanism that C188-9 regulates the demethylation efficacy of DAC. Overall, these findings provide a novel therapeutic strategy combining low-dose DAC and C188-9 to improve therapeutic efficacy by inhibiting DNMT1-inducing promoter methylation.
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Affiliation(s)
- Rui Kong
- Department of Pancreatic and Biliary Surgery, First Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, China.,Key Laboratory of Hepatosplenic Surgery, Ministry of Education, Harbin, China
| | - Guangming Sun
- Department of Pancreatic and Biliary Surgery, First Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, China.,Key Laboratory of Hepatosplenic Surgery, Ministry of Education, Harbin, China
| | - Xina Li
- Department of Pancreatic and Biliary Surgery, First Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, China
| | - Linfeng Wu
- Department of Pancreatic and Biliary Surgery, First Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, China.,Key Laboratory of Hepatosplenic Surgery, Ministry of Education, Harbin, China
| | - Le Li
- Department of Pancreatic and Biliary Surgery, First Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, China.,Key Laboratory of Hepatosplenic Surgery, Ministry of Education, Harbin, China
| | - Yilong Li
- Department of Pancreatic and Biliary Surgery, First Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, China.,Key Laboratory of Hepatosplenic Surgery, Ministry of Education, Harbin, China
| | - Fei Wang
- Department of Pancreatic and Biliary Surgery, First Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, China
| | - Ping Xuan
- School of Computer Science and Technology, Heilongjiang University, Harbin, China
| | - Shifeng Yang
- Department of Pancreatic and Biliary Surgery, First Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, China
| | - Bei Sun
- Department of Pancreatic and Biliary Surgery, First Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, China.,Key Laboratory of Hepatosplenic Surgery, Ministry of Education, Harbin, China
| | - Jisheng Hu
- Department of Pancreatic and Biliary Surgery, First Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, China.,Key Laboratory of Hepatosplenic Surgery, Ministry of Education, Harbin, China
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Li N, Zeng Y, Huang J. Signaling pathways and clinical application of RASSF1A and SHOX2 in lung cancer. J Cancer Res Clin Oncol 2020; 146:1379-1393. [PMID: 32266538 DOI: 10.1007/s00432-020-03188-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 03/17/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND An increasing number of studies have focused on the early diagnostic value of the methylation of RASSF1A and SHOX2 in lung cancer. However, the intricate cellular events related to RASSF1A and SHOX2 in lung cancer are still a mystery. For researchers and clinicians aiming to more profoundly understand the diagnostic value of methylated RASSF1A and SHOX2 in lung cancer, this review will provide deeper insights into the molecular events of RASSF1A and SHOX2 in lung cancer. METHODOLOGY We searched for relevant publications in the PubMed and Google Scholar databases using the keywords "RASSF1A", "SHOX2" and "lung cancer" etc. First, we reviewed the RASSF1A and SHOX2 genes, from their family structures to the functions of their basic structural domains. Then we mainly focused on the roles of RASSF1A and SHOX2 in lung cancer, especially on their molecular events in recent decades. Finally, we compared the value of measuring RASSF1A and SHOX2 gene methylation with that of the common methods for the diagnosis of lung cancer patients. RESULTS The RASSF1A and SHOX2 genes were confirmed to be regulators or effectors of multiple cancer signaling pathways, driving tumorigenesis and lung cancer progression. The detection of RASSF1A and SHOX2 gene methylation has higher sensitivity and specificity than other commonly used methods for diagnosing lung cancer, especially in the early stage. CONCLUSIONS The RASSF1A and SHOX2 genes are critical for the processes of tumorigenesis, development, metastasis, drug resistance, and recurrence in lung cancer. The combined detection of RASSF1A and SHOX2 gene methylation was identified as an excellent method for the screening and surveillance of lung cancer that exhibits high sensitivity and specificity.
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Affiliation(s)
- Nanhong Li
- Department of Pathology, Guangdong Medical University, Zhanjiang, 524023, China
| | - Yu Zeng
- Department of Respiration, The Second Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524003, China
| | - Jian Huang
- Department of Pathology, Guangdong Medical University, Zhanjiang, 524023, China.
- Pathological Diagnosis and Research Center, Affiliated Hospital, Guangdong Medical University, Zhanjiang, 524001, China.
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Ta TV, Nguyen QN, Chu HH, Truong VL, Vuong LD. RAS/RAF mutations and their associations with epigenetic alterations for distinct pathways in Vietnamese colorectal cancer. Pathol Res Pract 2020; 216:152898. [PMID: 32089414 DOI: 10.1016/j.prp.2020.152898] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/27/2020] [Accepted: 02/16/2020] [Indexed: 02/07/2023]
Abstract
KRAS, NRAS, and BRAF are potential tumor-driven genes that are involved in the RAS/RAF/MAPK signaling pathway. RAS/RAF mutations importantly contribute to colorectal tumorigenesis since they remain the activated status of downstream pathways without regulation of the upstream EGFR signal. However, it has not been unclear how epigenetic alterations involved in colorectal tumorigenesis mediated by KRAS, NRAS, or BRAF mutations. Therefore, in this study, we investigated the frequency and distribution of KRAS/NRAS/BRAF mutations in Vietnamese colorectal cancer (CRC) and explored the relationship between genetic and epigenetic abnormalities in 156 tumors of CRC. Somatic mutations of KRAS (exon 2, codon 12/13; exon 3, codon 61), NRAS (exon 2, codon 12/13; exon 3, codon 61), and BRAF (exon 15, codon 600) was determined by Cobas® KRAS Mutation Test, Therascreen NRAS Pyro Kit and Cobas® 4800 BRAF V600 Mutation Test, respectively. Methylation status of BRCA1, MLH1, MGMT, p16, RASSF1A, and APC was detected by methylation-specific PCR. Distribution of each abnormality in clinicopathological features was also analyzed. Results showed the mutation rates of KRAS, NRAS, and BRAF were 41.0 %, 9.6 %, 8.3 % respectively, while the methylation rates of BRCA1, MLH1, MGMT, p16, RASSF1A, and APC were 16.7 %, 16.7 %, 32.7 %, 30.1 %, 30.1 %, and 37.2 % respectively. The distribution of KRAS mutation was mutually exclusive against that of NRAS (p < 0.001) and BRAF (p < 0.001) mutations in CRC. RAS/RAF mutations were more common in adenocarcinoma subtype (p = 0.020), whereas RASSF1A methylation was more frequent in mucinous adenocarcinoma subtype (p = 0.007). In addition, the frequency of having KRAS mutations was significantly higher in MGMT (p = 0.035) or RASSF1A (p = 0.043) methylated cases than in those without methylation. BRAF mutations were positively associated with MLH1 hypermethylation (p = 0.028) but were inversely associated with APC hypermethylation (p = 0.032). Overall, our results show specific interactions of genetic and epigenetic alterations and suggest the presence of independent oncogenic pathways in tumorigenesis of CRC.
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Affiliation(s)
- To Van Ta
- Pathology and Molecular Biology Center, National Cancer Hospital K, 30 Cau Buou Street, Thanh Tri, Hanoi, Viet Nam
| | - Quang Ngoc Nguyen
- Pathology and Molecular Biology Center, National Cancer Hospital K, 30 Cau Buou Street, Thanh Tri, Hanoi, Viet Nam
| | - Ha Hoang Chu
- National Key Laboratory of Gene Technology, Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay, Hanoi, Viet Nam
| | - Van-Long Truong
- Department of Smart Food and Drug, College of BNIT, Inje University, Gimhae 50834, South Korea.
| | - Linh Dieu Vuong
- Pathology and Molecular Biology Center, National Cancer Hospital K, 30 Cau Buou Street, Thanh Tri, Hanoi, Viet Nam.
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Din Shah NU, Ali MN, Ganai BA, Mudassar S, Khan MS, Kour J, Waza AA, Rasool MT, Lone AM. Association of promoter methylation of RASSF1A and KRAS mutations in non-small cell lung carcinoma in Kashmiri population (India). Heliyon 2020; 6:e03488. [PMID: 32140600 PMCID: PMC7047189 DOI: 10.1016/j.heliyon.2020.e03488] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 07/11/2019] [Accepted: 02/21/2020] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Non-small cell lung carcinoma (NSCLC) incidence and progression is increasing because of genetic and epigenetic changes. The mutations in the Kirsten rat sarcoma (KRAS) are the most frequently oncogene aberrations in lung carcinoma patients. A candidate tumor suppressor gene (TSG) Ras Association Domain Family 1 Isoform A (RASSF1A), is silenced by promoter hypermethylation in several human malignancies including non-small cell lung carcinoma (NSCLC). We hypothesized that RASSF1A methylation and KRAS mutations may play an important role in NSCLC. METHODS Non-small cell lung carcinoma patients (n = 100) and equal number of healthy controls were assessed for activating KRAS (exon 2) mutations using allele-specific oligonucleotide polymerase chain reaction (ASO-PCR) and promoter hypermethylation of RASSF1A using methylation specific PCR. RESULTS The frequency of mutations in Kirsten rat sarcoma (KRAS) were found in 31% of NSCLC patients in the Kashmiri population and occur most commonly, but not exclusively, in adenocarcinoma histology and life-long smokers. The NSCLC patients in advanced stage reported the higher frequency of mutation in KRAS (exon 2). A significant higher frequency of this mutation was reported in patients with NSCLC (29.16%) who are positive for metastasis (P < 0.03). The frequencies of promoter hypermethylation at Ras Association Domain Family 1 Isoform A (RASSF1A) were 41% in cases and 3% in control samples. The frequency of KRAS mutation and RASSF1A promoter methylation were significantly different between adenocarcinomas (ADC) and squamous cell carcinomas (SCC) patients with NSCLC (P < 0.03). In addition, we reported that NSCLC patients having RASSF1A promoter methylation was significantly associated with smoking (P = 0.01). It was identified that NSCLC patients with RASSF1A promoter region hypermethylation had poorer survival and faster disease progression compared with those without hypermethylation of RASSF1A promoter region (P = 0.0001). The Median survivals among with cases containing promoter region hypermethylation of RASSF1A were 17.20 and 42.13 months for patients without promoter region hypermethylation of RASSF1A and the patients with KRAS mutation with or without hypermethylation of the promoter region of RASSF1A a tumor suppressor gene had poorer survival compared with those patients with wild type KRAS gene, with or without hypermethylation of RASSF1A promoter region. These differences were statistically significant based on Log-rank (Mantel-cox) test (P = 0.0001). The median survivals among patients with mutation in KRAS protooncogene were 16 months and 42 months for NSCLC patients with wild type KRAS gene. CONCLUSIONS The aberrant RASSF1A gene promoter methylation with the subsequent mutation in KRAS gene (exon 2) plays a significant role in the pathogenesis and disease progression of non-small cell lung carcinoma (NSCLC).
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Affiliation(s)
- Naseer Ue Din Shah
- Cytogenetic and Molecular Biology Research Laboratory, Centre of Research for Development, University of Kashmir, Srinagar, 190006, J&K, India
| | - Md Niamat Ali
- Cytogenetic and Molecular Biology Research Laboratory, Centre of Research for Development, University of Kashmir, Srinagar, 190006, J&K, India
| | - Bashir A. Ganai
- Biochemistry Research Laboratory, Centre of Research for Development, University of Kashmir, Srinagar, 190006, J&K, India
| | - Syed Mudassar
- Department of Clinical Biochemistry, Sheri-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, 190011, J&K, India
| | - Mosin Saleem Khan
- Department of Clinical Biochemistry, Sheri-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, 190011, J&K, India
| | - Jasbir Kour
- Cytogenetic and Molecular Biology Research Laboratory, Centre of Research for Development, University of Kashmir, Srinagar, 190006, J&K, India
| | - Ajaz Ahmad Waza
- Biochemistry Research Laboratory, Centre of Research for Development, University of Kashmir, Srinagar, 190006, J&K, India
| | - Malik Tariq Rasool
- Department of Radiation Oncology, Sher-i- Kashmir Institute of Medical Sciences Srinagar, Jammu &Kashmir, India 190011
| | - Aabid Maqbool Lone
- Department of Radiation Oncology, Sher-i- Kashmir Institute of Medical Sciences Srinagar, Jammu &Kashmir, India 190011
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Bin Y, Ding Y, Xiao W, Liao A. RASSF1A: A promising target for the diagnosis and treatment of cancer. Clin Chim Acta 2020; 504:98-108. [PMID: 31981586 DOI: 10.1016/j.cca.2020.01.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 01/16/2020] [Accepted: 01/16/2020] [Indexed: 02/07/2023]
Abstract
The Ras association domain family 1 isoform A (RASSF1A), a tumor suppressor, regulates several tumor-related signaling pathways and interferes with diverse cellular processes. RASSF1A is frequently demonstrated to be inactivated by hypermethylation in numerous types of solid cancers. It is also associated with lymph node metastasis, vascular invasion, and chemo-resistance. Therefore, reactivation of RASSF1A may be a viable strategy to block tumor progress and reverse drug resistance. In this review, we have summarized the clinical value of RASSF1A for screening, staging, and therapeutic management of human malignancies. We also highlighted the potential mechanism of RASSF1A in chemo-resistance, which may help identify novel drugs in the future.
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Affiliation(s)
- Yuling Bin
- Digestive System Department, the First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, China
| | - Yong Ding
- Department of Vascular Surgery, Zhongshan Hospital, Institue of Vascular Surgery, Fudan University, Shanghai 200032, China
| | - Weisheng Xiao
- Digestive System Department, the First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, China
| | - Aijun Liao
- Digestive System Department, the First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, China.
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García-Gutiérrez L, McKenna S, Kolch W, Matallanas D. RASSF1A Tumour Suppressor: Target the Network for Effective Cancer Therapy. Cancers (Basel) 2020; 12:cancers12010229. [PMID: 31963420 PMCID: PMC7017281 DOI: 10.3390/cancers12010229] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 01/12/2020] [Accepted: 01/14/2020] [Indexed: 02/06/2023] Open
Abstract
The RASSF1A tumour suppressor is a scaffold protein that is involved in cell signalling. Increasing evidence shows that this protein sits at the crossroad of a complex signalling network, which includes key regulators of cellular homeostasis, such as Ras, MST2/Hippo, p53, and death receptor pathways. The loss of expression of RASSF1A is one of the most common events in solid tumours and is usually caused by gene silencing through DNA methylation. Thus, re-expression of RASSF1A or therapeutic targeting of effector modules of its complex signalling network, is a promising avenue for treating several tumour types. Here, we review the main modules of the RASSF1A signalling network and the evidence for the effects of network deregulation in different cancer types. In particular, we summarise the epigenetic mechanism that mediates RASSF1A promoter methylation and the Hippo and RAF1 signalling modules. Finally, we discuss different strategies that are described for re-establishing RASSF1A function and how a multitargeting pathway approach selecting druggable nodes in this network could lead to new cancer treatments.
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Affiliation(s)
- Lucía García-Gutiérrez
- Systems Biology Ireland, University College Dublin, Belfield, Dublin 4, Ireland; (L.G.-G.); (S.M.); (W.K.)
| | - Stephanie McKenna
- Systems Biology Ireland, University College Dublin, Belfield, Dublin 4, Ireland; (L.G.-G.); (S.M.); (W.K.)
| | - Walter Kolch
- Systems Biology Ireland, University College Dublin, Belfield, Dublin 4, Ireland; (L.G.-G.); (S.M.); (W.K.)
- School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
- Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland
| | - David Matallanas
- Systems Biology Ireland, University College Dublin, Belfield, Dublin 4, Ireland; (L.G.-G.); (S.M.); (W.K.)
- School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
- Correspondence:
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Chen J, Wu L, Xu H, Cheng S. 5-Aza-CdR Regulates RASSF1A By Inhibiting DNMT1 To Affect Colon Cancer Cell Proliferation, Migration And Apoptosis. Cancer Manag Res 2019; 11:9517-9528. [PMID: 31807076 PMCID: PMC6850683 DOI: 10.2147/cmar.s229726] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 10/22/2019] [Indexed: 12/03/2022] Open
Abstract
Objective To evaluate 5-Aza-CdR’s inhibited effects on migration, proliferation, and apoptosis in colon cancer cells and its potential mechanisms. Methods HCT-116, SW480, and SW620 were divided into HCT116 group, HCT116+5-Aza-CdR group, SW480 group, SW480+5-Aza-CdR group, SW620 group and SW620+5-Aza according to experimental needs. MTT test was chosen to investigate cell proliferation; Transwell test was used to evaluate cell migration; scratch assay was used to investigate cell invasion; flow cytometry was used to investigate apoptosis; immunofluorescence assay was used to investigate the protein level of DNMT1 and RASSF1A in cells; qRT-PCR was used to examine DNMT1, RASSF1A, RAS, Raf1, MEK, Grb2 and ERK transcription levels. Results Compared with HCT116 group, 5-Aza-CdR+HCT116 group inhibited cell proliferation, increased apoptosis rate, decreased invasive ability, decreased DNMT1 expression, increased expression of RASSF1A, decreased expression of RAS, Raf1, MEK, Grb2 and ERK. SW480 was compared with 5-Aza-CdR+SW480 group and SW620 group with 5-Aza-CdR+SW620 group. Their change trend of detection index was similar to that in HCT-116 group and HCT116+5-Aza-CdR group. Conclusion 5-Aza-CdR can obviously inhibit the proliferation, migration and invasion of three colon cancer cell lines. Its mechanism maybe relies on the inhibition of DNMT1 mRNA level and protein level and the enhancement of RASSF1A mRNA level and protein level.
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Affiliation(s)
- Jinyuan Chen
- Department of Gastrointestinal Surgery, People's Hospital of Longhua, Shenzhen, Guangdong 518109, People's Republic of China
| | - Lixiang Wu
- Guangzhou Concord Cancer Center, Guangzhou, Guangdong 510620, People's Republic of China
| | - Hong Xu
- Department of Pharmacy, People's Hospital of Longhua, Shenzhen, Guangdong 518109, People's Republic of China
| | - Shubang Cheng
- Department of Gastrointestinal Surgery, People's Hospital of Longhua, Shenzhen, Guangdong 518109, People's Republic of China
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El-Bendary M, Nour D, Arafa M, Neamatallah M. Methylation of tumour suppressor genes RUNX3, RASSF1A and E-Cadherin in HCV-related liver cirrhosis and hepatocellular carcinoma. Br J Biomed Sci 2019; 77:35-40. [PMID: 31790342 DOI: 10.1080/09674845.2019.1694123] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Background: HCV infection is related to aberrant methylation of several genes. RASSF1A, E-Cadherin and RUNX3 are tumour suppressor genes that may be inactivated by hypermethylation in many tumours including hepatocellular carcinoma (HCC). We hypothesized that methylation is a diagnostic biomarker for HCC in patients with HCV-related liver cirrhosis.Methods: We recruited 207 cases of HCV-related liver cirrhosis, 193 HCC patients and 53 healthy controls. Methylation-specific polymerase chain reaction for detection of circulating hypermethylated RASSF1A, E-Cadherinand RUNX3. Alpha fetoprotein (AFP) was measured by commercial immunoassay.Results: Significant hypermethylation of the three genes was found in the HCC group compared to both cirrhosis and healthy groups (P < 0.001), whereas no significant difference in hypermethylation was found between cirrhosis and healthy groups (P = 0.17, 0.50 and 0.14, respectively). No significant links were found between hypermethylated RASSF1A, E-Cadherin and RUNX3 and stages of Barcelona Clinic of Liver Cancer score (P =0.21, 0.63 and 0.98, respectively). No significant associations were found between AFP value and hypermethylated genes in cirrhosis and HCC groups (P = 0.82) except with E-Cadherin in HCC (P = 0.02). In multiple regression analysis, RASSF1A and E-Cadherin were predictors of HCC within cirrhosis cases, but only E-Cadherin was an independent risk factor for prediction of HCC in cases with low AFP (P = 0.01).Conclusions: The presence of hypermethylated serum RASSF1A, E-Cadherin and RUNX3 is linked to HCC in patients with HCV-related cirrhosis. Only E-Cadherin is an independent risk factor for prediction of HCC with low AFP. These findings may be of diagnostic value.
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Affiliation(s)
- Mahmoud El-Bendary
- Tropical Medicine and Hepatology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Dina Nour
- Mansoura Fever Hospital, Ministry of Health, Mansoura, Egypt
| | - Mona Arafa
- Tropical Medicine and Hepatology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Mustafa Neamatallah
- Medical Biochemistry Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
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Dubois F, Keller M, Hoflack J, Maille E, Antoine M, Westeel V, Bergot E, Quoix E, Lavolé A, Bigay-Game L, Pujol JL, Langlais A, Morin F, Zalcman G, Levallet G. Role of the YAP-1 Transcriptional Target cIAP2 in the Differential Susceptibility to Chemotherapy of Non-Small-Cell Lung Cancer (NSCLC) Patients with Tumor RASSF1A Gene Methylation from the Phase 3 IFCT-0002 Trial. Cancers (Basel) 2019; 11:cancers11121835. [PMID: 31766357 PMCID: PMC6966477 DOI: 10.3390/cancers11121835] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/12/2019] [Accepted: 11/19/2019] [Indexed: 12/27/2022] Open
Abstract
RASSF1 gene methylation predicts longer disease-free survival (DFS) and overall survival (OS) in patients with early-stage non-small-cell lung cancer treated using paclitaxel-based neo-adjuvant chemotherapy compared to patients receiving a gemcitabine-based regimen, according to the randomized Phase 3 IFCT (Intergroupe Francophone de Cancérologie Thoracique)-0002 trial. To better understand these results, this study used four human bronchial epithelial cell (HBEC) models (HBEC-3, HBEC-3-RasV12, A549, and H1299) and modulated the expression of RASSF1A or YAP-1. Wound-healing, invasion, proliferation and apoptosis assays were then carried out and the expression of YAP-1 transcriptional targets was quantified using a quantitative polymerase chain reaction. This study reports herein that gemcitabine synergizes with RASSF1A, silencing to increase the IAP-2 expression, which in turn not only interferes with cell proliferation but also promotes cell migration. This contributes to the aggressive behavior of RASSF1A-depleted cells, as confirmed by a combined knockdown of IAP-2 and RASSF1A. Conversely, paclitaxel does not increase the IAP-2 expression but limits the invasiveness of RASSF1A-depleted cells, presumably by rescuing microtubule stabilization. Overall, these data provide a functional insight that supports the prognostic value of RASSF1 gene methylation on survival of early-stage lung cancer patients receiving perioperative paclitaxel-based treatment compared to gemcitabine-based treatment, identifying IAP-2 as a novel biomarker indicative of YAP-1-mediated modulation of chemo-sensitivity in lung cancer.
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Affiliation(s)
- Fatéméh Dubois
- Normandie Université, UNICAEN, CEA, CNRS, ISTCT/CERVOxy group, GIP CYCERON, 14074 Caen, France; (F.D.); (M.K.); (E.M.); (E.B.)
- Department of Pathology, CHU de Caen, 14033 Caen, France
| | - Maureen Keller
- Normandie Université, UNICAEN, CEA, CNRS, ISTCT/CERVOxy group, GIP CYCERON, 14074 Caen, France; (F.D.); (M.K.); (E.M.); (E.B.)
- Normandie Université, UNICAEN, UPRES-EA2608, 14032 Caen, France
| | - Julien Hoflack
- Normandie Université, UNICAEN, UPRES-EA2608, 14032 Caen, France
| | - Elodie Maille
- Normandie Université, UNICAEN, CEA, CNRS, ISTCT/CERVOxy group, GIP CYCERON, 14074 Caen, France; (F.D.); (M.K.); (E.M.); (E.B.)
- Normandie Université, UNICAEN, INSERM UMR 1086 ANTICIPE, 14032 Caen, France
| | - Martine Antoine
- Department of Pathology, Hôpital Tenon, AP-HP, 75020 Paris, France;
| | - Virginie Westeel
- Department of Pneumology, University Hospital of Besançon, University Bourgogne Franche-Comté, 25000 Besançon, France;
| | - Emmanuel Bergot
- Normandie Université, UNICAEN, CEA, CNRS, ISTCT/CERVOxy group, GIP CYCERON, 14074 Caen, France; (F.D.); (M.K.); (E.M.); (E.B.)
- Department of Pulmonology & Thoracic Oncology, CHU de Caen, 14033 Caen, France
| | - Elisabeth Quoix
- Department of Pneumology, University Hospital, 67000 Strasbourg, France;
| | - Armelle Lavolé
- Sorbonne Université, GRC n 04, Theranoscan, AP-HP, Service de Pneumologie, Hôpital Tenon, 75020 Paris, France;
| | - Laurence Bigay-Game
- Pneumology Department, Toulouse-Purpan, University Hospital Toulouse, 31300 Toulouse, France;
| | - Jean-Louis Pujol
- Département d’Oncologie Thoracique, CHU Montpellier, Univ. Montpellier, 34595 Montpellier, France;
| | - Alexandra Langlais
- Intergroupe Francophone de Cancérologie Thoracique (IFCT), 75009 Paris, France; (A.L.); (F.M.)
| | - Franck Morin
- Intergroupe Francophone de Cancérologie Thoracique (IFCT), 75009 Paris, France; (A.L.); (F.M.)
| | - Gérard Zalcman
- U830 INSERM “Genetics and Biology of Cancers, A.R.T Group”, Curie Institute, 75005 Paris, France
- Department of Thoracic Oncology & CIC1425, Hôpital Bichat-Claude Bernard, Assistance Publique Hôpitaux de Paris, Université Paris-Diderot, 75018 Paris, France
- Correspondence: (G.Z.); (G.L.); Tel.: +33-(0)140-257-502 (G.Z.); +33-(0)231-063-134 (G.L.)
| | - Guénaëlle Levallet
- Normandie Université, UNICAEN, CEA, CNRS, ISTCT/CERVOxy group, GIP CYCERON, 14074 Caen, France; (F.D.); (M.K.); (E.M.); (E.B.)
- Department of Pathology, CHU de Caen, 14033 Caen, France
- Correspondence: (G.Z.); (G.L.); Tel.: +33-(0)140-257-502 (G.Z.); +33-(0)231-063-134 (G.L.)
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