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de Vasconcelos PC, Freitas TR, de Araújo Lopes LV, Peixoto LR, Xavier MP, Cançado Figueiredo AC, Dias KL, de Oliveira JG, de Oliveira Salles PG, Vago AR, de Paula Sabino A, de Lima Rocha MG. RAP1-GTPase immunostaining is altered in human precancerous and cancerous cervical lesions. Biomark Med 2024; 18:771-785. [PMID: 39254347 PMCID: PMC11457648 DOI: 10.1080/17520363.2024.2394384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 08/09/2024] [Indexed: 09/11/2024] Open
Abstract
Aim: This study investigated RAP1 immunostaining variation in different cell types during CC progression.Methods: Paraffin-embedded cervical tissues from 101 patients were categorized into control, pre-neoplastic and neoplastic groups. RAP1 immunolocalization, HPV detection and genotyping were performed. A semiquantitative immunoreactive score was employed to compare labeling intensity, cellular localization, nuclear labeling, percentage and distribution of reactive cells.Results: 73% (72/99) of cervical specimens were HPV+. RAP1 was localized in the nucleus and cytoplasm of all samples. Cytoplasmic RAP1 immunoscore was higher than nuclear score in all CC groups. RAP1 intensity increased with lesion severity. SCC samples exhibited predominantly intense RAP1 immunostaining.Conclusion: RAP1 is an efficient biomarker for detecting invasive CC lesions but has limited utility in distinguishing SCC grades.
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Affiliation(s)
- Paula Cristina de Vasconcelos
- Department of Clinical & Toxicological Analysis, College of Pharmacy, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Tulio Resende Freitas
- Department of Clinical & Toxicological Analysis, College of Pharmacy, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | | | - Larissa Rodrigues Peixoto
- Department of Morphology, Institute of Biological Sciences, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Marcelo Pascoal Xavier
- Department of Pathological Anatomy, College of Medicine – Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 30130-100, Brazil
| | - Anna Carolina Cançado Figueiredo
- Integrated Research Group on Biomarkers, Renée Rachou Research Institute – FIOCRUZ, Belo Horizonte, Minas Gerais, 30190-003, Brazil
| | - Karolina Lopes Dias
- Laboratory of Cellular & Molecular Immunology, Renée Rachou Research Institute – FIOCRUZ, Belo Horizonte, Minas Gerais, 30190-003, Brazil
| | - Jaqueline Germano de Oliveira
- Laboratory of Cellular & Molecular Immunology, Renée Rachou Research Institute – FIOCRUZ, Belo Horizonte, Minas Gerais, 30190-003, Brazil
| | | | - Annamaria Ravaro Vago
- Department of Morphology, Institute of Biological Sciences, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Adriano de Paula Sabino
- Department of Clinical & Toxicological Analysis, College of Pharmacy, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Maria Gabrielle de Lima Rocha
- Department of Clinical & Toxicological Analysis, College of Pharmacy, Belo Horizonte, Minas Gerais, 31270-901, Brazil
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Shi M. The Efficacy of Ganoderma lucidum Extracts on Treating Endometrial Cancer: A Network Pharmacology Approach. Reprod Sci 2024; 31:1881-1894. [PMID: 38448739 PMCID: PMC11217070 DOI: 10.1007/s43032-024-01500-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 02/09/2024] [Indexed: 03/08/2024]
Abstract
Ganoderma lucidum (GL) is a prominent medicinal mushroom in traditional Chinese medicine, known for its potent antitumor properties. This study aimed to illustrate the efficacy of GL extracts (GLE) on treating endometrial cancer (EC) and explore the underlying mechanisms via network pharmacology and experimental validation. Network pharmacological analysis was conducted to explore the therapeutic efficacy and mechanisms of GL on EC. In vitro experimental validation was performed on human endometrial cancer cell lines HEC-1-A and KLE. Network pharmacology revealed that key targets of GL against EC were primarily associated with the Rap1 signaling pathway. In in vitro experiments, GLE or GGTI-298 (a GTPase inhibitor) treatment inhibited cell proliferation and migration, promoted cell apoptosis, increased caspase-3 level, and arrested cell cycle in G1 phase in HEC-1-A and KLE cells. GLE increased the protein expression of Rap1-GTP, p-AKT, and p-ERK2 in HEC-1-A and KLE cells. Moreover, GGTI-298 enhanced the effects of GLE on suppressing the malignant progression of EC cells and on activating Rap1 signaling pathway. GLE inhibited the malignant progression of EC cells probably via activating the Rap1 signaling pathway.
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Affiliation(s)
- Min Shi
- Department of Medical Oncology, Zhejiang Putuo Hospital, Zhoushan, 316100, Zhejiang Province, China.
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3
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Dai S, Wang Q, Lyu Y, Chen Z, Liu X, Zhao G, Zhang H. LncRNA AC100826.1 regulated PLCB1 to promote progression in non-small cell lung cancer. Thorac Cancer 2024; 15:1477-1489. [PMID: 38778543 PMCID: PMC11219295 DOI: 10.1111/1759-7714.15323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/16/2024] [Accepted: 04/18/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND Lung cancer is the most common malignant tumor. In the present study, we identified a long non-coding RNA (lncRNA) AC100826.1 (simplify to Lnc1), which was highly expressed in non-small cell lung cancer (NSCLC) tissues compared with the paracancerous tissues. We also observed the critical role of Lnc1 in regulating the metastasis ability of NSCLC cells. METHODS RNA sequencing was performed to detect differential expression levels of lncRNAs in NSCLC tissues and its paracancerous tissues. Effects of Lnc1 on cell proliferation, invasion, and migration were determined by CCK-8, transwell and scratch assays. The xenograft experiment confirmed the effect of Lnc1 on NSCLC cells proliferation and migration abilities in vivo. RT-qPCR and western blots were performed to determine the expression levels of mRNAs and proteins. RESULTS The expression level of Lnc1 was related to multiple pathological results, knockdown of Lnc1 can inhibit the proliferation and metastasis abilities of NSCLC cells. silencing phospholipase C, β1(PLCB1) can reverse the promoting effects of overexpression Lnc1 on NSCLC cells proliferation and migration abilities. In addition, the Rap1 signaling pathway was implicated in the regulation of Lnc1 in NSCLC metastasis. CONCLUSION Our results suggest that Lnc1 regulated the metastatic ability of NSCLC cells through targeting the PLCB1/Rap1 signal pathway.
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Affiliation(s)
- Shenhui Dai
- Thoracic Surgery Laboratory, Xuzhou Medical UniversityXuzhouChina
- Department of Thoracic SurgeryAffiliated Hospital of Xuzhou Medical UniversityXuzhouChina
| | - Qiao Wang
- Thoracic Surgery Laboratory, Xuzhou Medical UniversityXuzhouChina
- Department of Thoracic SurgeryAffiliated Hospital of Xuzhou Medical UniversityXuzhouChina
| | - Yin Lyu
- Thoracic Surgery Laboratory, Xuzhou Medical UniversityXuzhouChina
- Department of Thoracic SurgeryAffiliated Hospital of Xuzhou Medical UniversityXuzhouChina
| | - Zhipeng Chen
- Department of Thoracic SurgeryAffiliated Hospital of Xuzhou Medical UniversityXuzhouChina
| | - Xiucheng Liu
- Thoracic Surgery Laboratory, Xuzhou Medical UniversityXuzhouChina
- Department of Thoracic SurgeryAffiliated Hospital of Xuzhou Medical UniversityXuzhouChina
| | - Guoqing Zhao
- Thoracic Surgery Laboratory, Xuzhou Medical UniversityXuzhouChina
- Department of Thoracic SurgeryAffiliated Hospital of Xuzhou Medical UniversityXuzhouChina
| | - Hao Zhang
- Thoracic Surgery Laboratory, Xuzhou Medical UniversityXuzhouChina
- Department of Thoracic SurgeryAffiliated Hospital of Xuzhou Medical UniversityXuzhouChina
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4
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Yoshie M, Ohishi K, Ishikawa G, Tsuru A, Kusama K, Azumi M, Tamura K. Small GTP-binding protein Rap1 mediates EGF and HB-EGF signaling and modulates EGF receptor expression in HTR-8/SVneo extravillous trophoblast cells. Reprod Med Biol 2023; 22:e12537. [PMID: 37614815 PMCID: PMC10442520 DOI: 10.1002/rmb2.12537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 08/06/2023] [Accepted: 08/08/2023] [Indexed: 08/25/2023] Open
Abstract
Purpose Extravillous trophoblasts (EVTs) invade the endometrium to establish a fetomaternal interaction during pregnancy. Epidermal growth factor (EGF) and heparin-binding EGF-like growth factor (HB-EGF) stimulate EVT invasion by binding to the EGF receptor (EGFR). We examined the role of the small GTP-binding protein Rap1 in EGF- and HB-EGF-stimulated EVT invasion. Methods Expression of Rap1 in the first-trimester placenta was examined by immunohistochemistry. Effect of EGF or HB-EGF on Rap1 activation (GTP-Rap1) and Rap1 knockdown on invasion was assessed in EVT cell line (HTR-8/SVneo). In addition, effect of Rap1 knockdown and Rap1GAP (a Rap1 inactivator) overexpression on the activation of EGF signaling and EGFR expression were examined. Results Rap1 was expressed by EVTs, villous cytotrophoblasts, and syncytiotrophoblasts in the placenta. EGF and HB-EGF activated Rap1 and promoted invasion of HTR-8/SVneo, and these effects were inhibited by Rap1 knockdown. The EGF- and HB-EGF-induced phosphorylation of AKT, ERK1/2, p38MAPK, and Src was inhibited by Rap1 knockdown. Furthermore, the knockdown of Rap1 reduced the EGFR protein level. Overexpression of Rap1GAP repressed EGF- and HB-EGF-induced Rap1 activation and reduced EGFR expression. Conclusion Rap1 may function as a mediator of EGF and HB-EGF signaling pathways and can modulate EGFR expression in EVTs during placental development.
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Affiliation(s)
- Mikihiro Yoshie
- Department of Endocrine PharmacologyTokyo University of Pharmacy and Life SciencesTokyoJapan
| | - Kensuke Ohishi
- Department of Endocrine PharmacologyTokyo University of Pharmacy and Life SciencesTokyoJapan
| | - Gen Ishikawa
- Department of ObstetricsMiyagi Children's HospitalSendaiJapan
| | - Atsuya Tsuru
- Department of Endocrine PharmacologyTokyo University of Pharmacy and Life SciencesTokyoJapan
| | - Kazuya Kusama
- Department of Endocrine PharmacologyTokyo University of Pharmacy and Life SciencesTokyoJapan
| | - Mana Azumi
- Department of Endocrine PharmacologyTokyo University of Pharmacy and Life SciencesTokyoJapan
| | - Kazuhiro Tamura
- Department of Endocrine PharmacologyTokyo University of Pharmacy and Life SciencesTokyoJapan
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Ying T, Wang X, Yao Y, Yuan J, Chen S, Wen L, Chen Z, Wang X, Luo C, Sheng J, Wang W, Teng L. Integrative Methylome and Transcriptome Characterization Identifies SERINC2 as a Tumor-Driven Gene for Papillary Thyroid Carcinoma. Cancers (Basel) 2022; 15:cancers15010243. [PMID: 36612238 PMCID: PMC9818177 DOI: 10.3390/cancers15010243] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/12/2022] [Accepted: 12/28/2022] [Indexed: 01/03/2023] Open
Abstract
Most papillary thyroid carcinomas (PTCs) can be diagnosed preoperatively by routine evaluation, such as thyroid ultrasonography and fine-needle aspiration biopsy. Nevertheless, understanding how to differentiate indolent thyroid tumors from aggressive thyroid cancers remains a challenge, which may cause overtreatment. This study aimed to identify papillary thyroid cancer-specific indicators with whole-genome DNA methylation and gene expression profiles utilizing Infinium Methylation EPIC BeadChip (850k) and RNA arrays. In this paper, we report SERINC2 as a potential tumor-driven indicator in PTC. The up-regulated expression levels of SERINC2 were verified in PTC cell lines via qPCR. Then, cell counting kit 8 (CCK-8), wound healing, and flow cytometric assays were performed to confirm the influence of SERINC2 on proliferation and apoptosis in PTC cell lines after intervention or overexpression. Moreover, the investigation of data from the Cancer Dependency Map (DepMap) provided a potential pathway targeted by SERINC2. The activation of the tryptophan metabolic pathway may reduce the dependency of SERINC2 in thyroid cancers. In conclusion, our results demonstrate the whole-genome DNA methylation and gene expression profiles of papillary thyroid carcinoma, identify SERINC2 as a potential tumor-driven biomarker, and preliminarily verify its function in PTC.
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Affiliation(s)
- Tianxing Ying
- Department of Surgical Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310000, China
| | - Xumeng Wang
- Department of Surgical Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310000, China
| | - Yunjin Yao
- Department of Thyroid Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310000, China
| | - Jimeng Yuan
- Department of Surgical Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310000, China
| | - Shitu Chen
- Department of Surgical Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310000, China
| | - Liping Wen
- Department of Surgical Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310000, China
| | - Zhijian Chen
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310000, China
| | - Xiaofeng Wang
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310000, China
| | - Chi Luo
- Zhejiang Laboratory for Systems & Precision Medicine, Zhejiang University Medical Center, Hangzhou 310000, China
| | - Jinghao Sheng
- Zhejiang Laboratory for Systems & Precision Medicine, Zhejiang University Medical Center, Hangzhou 310000, China
- Affiliated Hangzhou First People’s Hospital and Institute of Environmental Medicine, Zhejiang University School of Medicine, Hangzhou 310000, China
| | - Weibin Wang
- Department of Surgical Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310000, China
- Correspondence: (W.W.); (L.T.)
| | - Lisong Teng
- Department of Surgical Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310000, China
- Correspondence: (W.W.); (L.T.)
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Posttranslational Modifications in Thyroid Cancer: Implications for Pathogenesis, Diagnosis, Classification, and Treatment. Cancers (Basel) 2022; 14:cancers14071610. [PMID: 35406382 PMCID: PMC8996999 DOI: 10.3390/cancers14071610] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/15/2022] [Accepted: 03/17/2022] [Indexed: 11/17/2022] Open
Abstract
There is evidence that posttranslational modifications, including phosphorylation, acetylation, methylation, ubiquitination, sumoylation, glycosylation, and succinylation, may be involved in thyroid cancer. We review recent reports supporting a role of posttranslational modifications in the tumorigenesis of thyroid cancer, sensitivity to radioiodine and other types of treatment, the identification of molecular treatment targets, and the development of molecular markers that may become useful as diagnostic tools. An increased understanding of posttranslational modifications may be an important supplement to the determination of alterations in gene expression that has gained increasing prominence in recent years.
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Wang Y, Xie Y, Sun B, Guo Y, Song L, Mohammednur DE, Zhao C. The degradation of Rap1GAP via E6AP-mediated ubiquitin-proteasome pathway is associated with HPV16/18-infection in cervical cancer cells. Infect Agent Cancer 2021; 16:71. [PMID: 34952616 PMCID: PMC8710002 DOI: 10.1186/s13027-021-00409-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 12/03/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cervical cancers are closely associated with persistent high-risk human papillomaviruses (HR HPV) infection. The main mechanism involves the targeting of tumor suppressors, such as p53 and pRB, for degradation by HR HPV-encoded oncoproteins, thereby leading to tumorigenesis. Rap1GAP, a tumor suppressor gene, is down-regulated in many cancers. Previous studies have revealed that down-regulation of Rap1GAP is correlated with HPV16/18 infection in cervical cancer. However, the molecular mechanism remains unclear. In this study, we aimed to address the degradation pathway of Rap1GAP in HPV-positive cervical cancer cells. METHODS HPV-positive (HeLa and SiHa) and negative (C33A) cervical cancer cells were used to analyze the pathways of Rap1GAP degradation. MG132 (carbobenzoxy-leucyl-leucyl-leucine) was used to inhibit protein degradation by proteasome. Co-immunoprecipitation (co-IP) was used to detect the interaction between Rap1GAP and E6AP. siRNA for E6AP was used to silence the expression of E6AP. Rapamycin was used to induce cell autophagy. Western blotting was used to check the levels of proteins. RESULTS Following treatment with MG132, the levels of Rap1GAP were increased in the HR HPV-positive HeLa and SiHa cells, but not in the HPV-negative C33A cells. Co-immunoprecipitation assay revealed ubiquitinated Rap1GAP protein in HeLa and SiHa cells, but not in C33A cells. E6-associated protein (E6AP) mediated the ubiquitination of Rap1GAP by binding to it in HeLa and SiHa cells, but not in C33A cells. However, the levels of Rap1GAP were decreased in HeLa and SiHa cells after knocking down E6AP by siRNA. Silencing of E6AP did not affect the levels of Rap1GAP in C33A cells. Autophagy marker p62 was decreased and LC3 II/LC3 I was increased after knocking down E6AP in HeLa cells, but not in C33A cells. The levels of Rap1GAP were decreased after treating the cells with rapamycin to induce cell autophagy in HeLa and C33A cells. CONCLUSION Rap1GAP may be degraded by autophagy in cervical cancer cells, but HPV infection can switch the degradation pathway from autophagy to E6AP-mediated ubiquitin-proteasome degradation. E6AP may be a key component of the switch.
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Affiliation(s)
- Yinghui Wang
- College of Laboratory Medicine, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning, China
- Liaoning Provincial Center for Disease Control and Prevention, Shenyang, China
| | - Yihang Xie
- College of Laboratory Medicine, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning, China
| | - Boxuan Sun
- College of Laboratory Medicine, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning, China
| | - Yuwei Guo
- College of Laboratory Medicine, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning, China
| | - Ling Song
- College of Laboratory Medicine, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning, China
- Foruth Teaching Hospital, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Dawit Eman Mohammednur
- College of Laboratory Medicine, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning, China
| | - Chunyan Zhao
- College of Laboratory Medicine, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning, China.
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Chadchan SB, Popli P, Ambati CR, Tycksen E, Han SJ, Bulun SE, Putluri N, Biest SW, Kommagani R. Gut microbiota-derived short-chain fatty acids protect against the progression of endometriosis. Life Sci Alliance 2021; 4:4/12/e202101224. [PMID: 34593556 PMCID: PMC8500332 DOI: 10.26508/lsa.202101224] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/11/2021] [Accepted: 09/21/2021] [Indexed: 12/12/2022] Open
Abstract
Worldwide, ∼196 million are afflicted with endometriosis, a painful disease in which endometrial tissue implants and proliferates on abdominal peritoneal surfaces. Theories on the origin of endometriosis remained inconclusive. Whereas up to 90% of women experience retrograde menstruation, only 10% develop endometriosis, suggesting that factors that alter peritoneal environment might contribute to endometriosis. Herein, we report that whereas some gut bacteria promote endometriosis, others protect against endometriosis by fermenting fiber to produce short-chain fatty acids. Specifically, we found that altered gut microbiota drives endometriotic lesion growth and feces from mice with endometriosis contained less of short-chain fatty acid and n-butyrate than feces from mice without endometriosis. Treatment with n-butyrate reduced growth of both mouse endometriotic lesions and human endometriotic lesions in a pre-clinical mouse model. Mechanistic studies revealed that n-butyrate inhibited human endometriotic cell survival and lesion growth through G-protein-coupled receptors, histone deacetylases, and a GTPase activating protein, RAP1GAP. Our findings will enable future studies aimed at developing diagnostic tests, gut bacteria metabolites and treatment strategies, dietary supplements, n-butyrate analogs, or probiotics for endometriosis.
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Affiliation(s)
- Sangappa B Chadchan
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St Louis, MO, USA,Center for Reproductive Health Sciences, Washington University School of Medicine, St Louis, MO, USA
| | - Pooja Popli
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St Louis, MO, USA,Center for Reproductive Health Sciences, Washington University School of Medicine, St Louis, MO, USA
| | - Chandrasekhar R Ambati
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Eric Tycksen
- Genome Technology Access Center, McDonnell Genome Institute, Washington University School of Medicine, St Louis, MO, USA
| | - Sang Jun Han
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Serdar E Bulun
- Department of Obstetrics and Gynecology, Fienberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Nagireddy Putluri
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Scott W Biest
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St Louis, MO, USA,Division of Minimally Invasive Gynecologic Surgery, Washington University School of Medicine, St Louis, MO, USA
| | - Ramakrishna Kommagani
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St Louis, MO, USA .,Center for Reproductive Health Sciences, Washington University School of Medicine, St Louis, MO, USA
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9
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Faam B, Ghaffari MA, Khorsandi L, Ghadiri AA, Totonchi M, Amouzegar A, Fanaei SA, Azizi F, Shahbazian HB, Hashemi Tabar M. RAP1GAP Functions as a Tumor Suppressor Gene and Is Regulated by DNA Methylation in Differentiated Thyroid Cancer. Cytogenet Genome Res 2021; 161:227-235. [PMID: 34311462 DOI: 10.1159/000516122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 03/25/2021] [Indexed: 11/19/2022] Open
Abstract
Inactivation of tumor suppressor genes, such as RAP1GAP, by hypermethylation of their regulatory region can give rise to thyroid tumors. The aim of this study was to investigate the expression of the RAP1GAP gene and the DNA methylation patterns of its CpG74a, CpG74b, and CpG24 in an Iranian population with differentiated thyroid cancer (DTC). In this study, 160 individuals who underwent thyroidectomy in the Tehran Erfan Hospital between 2018 and 2020 were selected. DNA methylation patterns of selected CpG islands (CpG74a, CpG74b, and CpG24) were determined using methylation-specific PCR. The mRNA expression and protein level of -RAP1GAP were also evaluated. SW1736 and B-CPAP cells were treated with 5-aza-2'-deoxycytidine (5-Aza) to demethylate these regions. The hypermethylation rates of CpG74a and CpG24 in DTC samples were significantly higher than in the control. The mRNA expression and protein level of -RAP1GAP were significantly decreased in the DTC group. In the DTC group, hypermethylation in CpG74a was correlated with decreasing RAP1GAP expression (R2: 0.34; p = 0.043). CpG74a with a specificity of 86.4% has significant prediction power to distinguish between DTC and normal thyroid tissues. Additionally, hypermethylation of CpG74a was significantly associated with higher tumor stages (stage III-IV: 77%; stage I-II: 23%; p = 0.012). Increasing expression of RAP1GAP after demethylation with 15 µM of 5-Aza was observed in both cell lines. These results indicate that DNA hypermethylation in CpG74a can be considered as an epigenetic biomarker in DTC.
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Affiliation(s)
- Bita Faam
- Cellular and Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran,
| | - Mohammad A Ghaffari
- Cellular and Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Layasadat Khorsandi
- Cellular and Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Anatomical Sciences, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Ata A Ghadiri
- Cellular and Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Immunology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mehdi Totonchi
- Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Atieh Amouzegar
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Fereidoun Azizi
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hajeih B Shahbazian
- Chronic Diseases Care Research Center, School of Nursing and Midwifery, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mahmoud Hashemi Tabar
- Cellular and Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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10
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Rap1GAP Mediates Angiotensin II-Induced Cardiomyocyte Hypertrophy by Inhibiting Autophagy and Increasing Oxidative Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:7848027. [PMID: 33936386 PMCID: PMC8062190 DOI: 10.1155/2021/7848027] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 03/05/2021] [Accepted: 03/18/2021] [Indexed: 12/18/2022]
Abstract
Abnormal autophagy and oxidative stress contribute to angiotensin II- (Ang II-) induced cardiac hypertrophy and heart failure. We previously showed that Ang II increased Rap1GAP gene expression in cardiomyocytes associated with hypertrophy and autophagy disorders. Using real-time PCR and Western blot, we found that Rap1GAP expression was increased in the heart of Sprague Dawley (SD) rats infused by Ang II compared with saline infusion and in Ang II vs. vehicle-treated rat neonatal cardiomyocytes. Overexpression of Rap1GAP in cultured cardiomyocytes exacerbated Ang II-induced cardiomyocyte hypertrophy, reactive oxygen species (ROS) generation, and cell apoptosis and inhibited autophagy. The increased oxidative stress caused by Rap1GAP overexpression was inhibited by the treatment of autophagy agonists. Knockdown of Rap1GAP by siRNA markedly attenuated Ang II-induced cardiomyocyte hypertrophy and oxidative stress and enhanced autophagy. The AMPK/AKT/mTOR signaling pathway was inhibited by overexpression of Rap1GAP and activated by the knockdown of Rap1GAP. These results show that Rap1GAP-mediated pathway might be a new mechanism of Ang II-induced cardiomyocyte hypertrophy, which could be a potential target for the future treatment of cardiac hypertrophy and heart failure.
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11
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Li H, Liang J, Wang J, Han J, Li S, Huang K, Liu C. Mex3a promotes oncogenesis through the RAP1/MAPK signaling pathway in colorectal cancer and is inhibited by hsa-miR-6887-3p. Cancer Commun (Lond) 2021; 41:472-491. [PMID: 33638620 PMCID: PMC8211350 DOI: 10.1002/cac2.12149] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 01/30/2021] [Accepted: 02/17/2021] [Indexed: 12/22/2022] Open
Abstract
Background Although Mex3 RNA‐binding family member A (Mex3a) has demonstrated an important role in multiple cancers, its role and regulatory mechanism in CRC is unclear. In this study, we aimed to investigate the role and clinical significance of Mex3a in CRC and to explore its underlying mechanism. Methods Western blotting and quantitative real‐time polymerase chain reaction (qRT‐PCR) were performed to detect the expression levels of genes. 5‐Ethynyl‐2'‐deoxyuridine (EDU) and transwell assays were utilized to examine CRC cell proliferation and metastatic ability. The R software was used to do hierarchical clustering analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Overexpression and rescue experiments which included U0126, a specific mitogen activated protein kinase kinase/extracellular regulated protein kinase (MEK/ERK) inhibitor, and PX‐478, a hypoxia‐inducible factor 1 subunit alpha (HIF‐1α) inhibitor, were used to study the molecular mechanisms of Mex3a in CRC cells. Co‐immunoprecipitation (Co‐IP) assay was performed to detect the interaction between two proteins. Bioinformatics analysis including available public database and Starbase software (starbase.sysu.edu.cn) were used to evaluate the expression and prognostic significance of genes. TargetScan (www.targetscan.org) and the miRDB (mirdb.org) website were used to predict the combination site between microRNA and target mRNA. BALB/c nude mice were used to study the function of Mex3a and hsa‐miR‐6887‐3p in vivo. Results Clinicopathological and immunohistochemical (IHC) studies of 101 CRC tissues and 79 normal tissues demonstrated that Mex3a was a significant prognostic factor for overall survival (OS) in CRC patients. Mex3a knockdown substantially inhibited the migration, invasion, and proliferation of CRC cells. Transcriptome analysis and mechanism verification showed that Mex3a regulated the RAP1 GTPase activating protein (RAP1GAP)/MEK/ERK/HIF‐1α pathway. Furthermore, RAP1GAP was identified to interact with Mex3a in Co‐IP experiments. Bioinformatics and dual‐luciferase reporter experiments revealed that hsa‐miR‐6887‐3p could bind to the 3'‐untranslated regions (3'‐UTR) of the Mex3a mRNA. hsa‐miR‐6887‐3p downregulated Mex3a expression and inhibited the tumorigenesis of CRC both in vitro and in vivo. Conclusions Our study demonstrated that the hsa‐miR‐6887‐3p/Mex3a/RAP1GAP signaling axis was a key regulator of CRC and Mex3a has the potential to be a new diagnostic marker and treatment target for CRC.
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Affiliation(s)
- Haixia Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, P. R. China
| | - Jinghui Liang
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, P. R. China
| | - Jiang Wang
- Weifang People's Hospital, Weifang, Shandong, 261000, P. R. China
| | - Jingyi Han
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, P. R. China
| | - Shuang Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, P. R. China
| | - Kai Huang
- Department of Medical Oncology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, P. R. China
| | - Chuanyong Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, P. R. China.,Provincial Key Lab of Mental Disorder, Shandong University, Jinan, Shandong, 250012, P. R. China
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12
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Thyroid Carcinoma: Phenotypic Features, Underlying Biology and Potential Relevance for Targeting Therapy. Int J Mol Sci 2021; 22:ijms22041950. [PMID: 33669363 PMCID: PMC7920269 DOI: 10.3390/ijms22041950] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/10/2021] [Accepted: 02/12/2021] [Indexed: 12/12/2022] Open
Abstract
Thyroid carcinoma consists a group of phenotypically heterogeneous cancers. Recent advances in biological technologies have been advancing the delineation of genetic, epigenetic, and non-genetic factors that contribute to the heterogeneities of these cancers. In this review article, we discuss new findings that are greatly improving the understanding of thyroid cancer biology and facilitating the identification of novel targets for therapeutic intervention. We review the phenotypic features of different subtypes of thyroid cancers and their underlying biology. We discuss recent discoveries in thyroid cancer heterogeneities and the critical mechanisms contributing to the heterogeneity with emphases on genetic and epigenetic factors, cancer stemness traits, and tumor microenvironments. We also discuss the potential relevance of the intratumor heterogeneity in understanding therapeutic resistance and how new findings in tumor biology can facilitate designing novel targeting therapies for thyroid cancer.
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13
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Novikov NM, Zolotaryova SY, Gautreau AM, Denisov EV. Mutational drivers of cancer cell migration and invasion. Br J Cancer 2021; 124:102-114. [PMID: 33204027 PMCID: PMC7784720 DOI: 10.1038/s41416-020-01149-0] [Citation(s) in RCA: 125] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 10/13/2020] [Accepted: 10/15/2020] [Indexed: 02/06/2023] Open
Abstract
Genomic instability and mutations underlie the hallmarks of cancer-genetic alterations determine cancer cell fate by affecting cell proliferation, apoptosis and immune response, and increasing data show that mutations are involved in metastasis, a crucial event in cancer progression and a life-threatening problem in cancer patients. Invasion is the first step in the metastatic cascade, when tumour cells acquire the ability to move, penetrate into the surrounding tissue and enter lymphatic and blood vessels in order to disseminate. A role for genetic alterations in invasion is not universally accepted, with sceptics arguing that cellular motility is related only to external factors such as hypoxia, chemoattractants and the rigidity of the extracellular matrix. However, increasing evidence shows that mutations might trigger and accelerate the migration and invasion of different types of cancer cells. In this review, we summarise data from published literature on the effect of chromosomal instability and genetic mutations on cancer cell migration and invasion.
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Affiliation(s)
- Nikita M Novikov
- Laboratory of Cancer Progression Biology, Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - Sofia Y Zolotaryova
- Laboratory of Cancer Progression Biology, Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - Alexis M Gautreau
- CNRS UMR7654, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
- School of Biological and Medical Physics, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Evgeny V Denisov
- Laboratory of Cancer Progression Biology, Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia.
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Xu M, Zhou J, Zhang Q, Le K, Xi Z, Yi P, Zhao X, Tan J, Huang T. MiR-3121-3p promotes tumor invasion and metastasis by suppressing Rap1GAP in papillary thyroid cancer in vitro. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1229. [PMID: 33178761 PMCID: PMC7607113 DOI: 10.21037/atm-20-4469] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Rap1GAP is a tumor suppressor and is downregulated in human malignancies including papillary thyroid cancer (PTC). The mechanism of its suppression in PTC remains unclear. Methods Bioinformatic analyses were carried out to evaluate clinical significance and to predict upstream miRNA bindings of Rap1GAP. Three PTC cell lines, TPC-1, B-CPAP, and K1, were employed for functional verification and further experiments. We used dual-luciferase reporter gene assay to confirm the miRNA binding prediction, Western blotting and quantitative polymerase chain reaction (qPCR) to explore miRNA and Rap1GAP regulation, Transwell and wound healing assays to compare cell migration and invasion after protein knockout or overexpression, and Cell Counting Kit-8 (CCK-8) assay to evaluate cell proliferation. Results Rap1GAP expression was suppressed in thyroid cancer compared to adjacent normal tissues and was a potential diagnostic marker of PTC. Rap1GAP suppression was correlated to younger age, advanced T stage, N stage, extrathyroidal extension, BRAF-like tumors, and higher risk of recurrence. Combined analysis of bioinformatic prediction and dual-luciferase assay revealed binding between miR-3121-3p with 3'UTR of Rap1GAP promoter. MiR-3121-3p promoted cell migration, invasion, and proliferation via inhibiting Rap1GAP and thus upregulating MAPK pathway. Overexpression and knockdown of Rap1GAP could counteract the influence on cell migration and invasion carried out by miR-3121-3p mimic and inhibitor, respectively. Rap1GAP partially impaired the effect of miR-3121-3p in cell growth in the CCK-8 assay. Conclusions Rap1GAP expression is suppressed in PTC and is a potential diagnostic marker. Its upstream regulator, miR-3121-3p, affects tumor metastasis and proliferation via regulating Rap1GAP expression. MAPK signaling pathway may be involved in this effect.
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Affiliation(s)
- Ming Xu
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jun Zhou
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qiulei Zhang
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kehao Le
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zihan Xi
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Pengfei Yi
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiangwang Zhao
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jie Tan
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tao Huang
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Looi CK, Hii LW, Ngai SC, Leong CO, Mai CW. The Role of Ras-Associated Protein 1 (Rap1) in Cancer: Bad Actor or Good Player? Biomedicines 2020; 8:biomedicines8090334. [PMID: 32906721 PMCID: PMC7555474 DOI: 10.3390/biomedicines8090334] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/02/2020] [Accepted: 09/05/2020] [Indexed: 02/05/2023] Open
Abstract
Metastasis is known as the most life-threatening event in cancer patients. In principle, the immune system can prevent tumor development. However, dysfunctional T cells may fail to eliminate the tumor cells effectively and provide additional survival advantages for tumor proliferation and metastasis. Constitutive activation of Ras-associated protein1 (Rap1) has not only led to T cell anergy, but also inhibited autophagy and supported cancer progression through various oncogenic events. Inhibition of Rap1 activity with its negative regulator, Rap1GAP, impairs tumor progression. However, active Rap1 reduces tumor invasion in some cancers, indicating that the pleiotropic effects of Rap1 signaling in cancers could be cancer-specific. All in all, targeting Rap1 signaling and its regulators could potentially control carcinogenesis, metastasis, chemoresistance and immune evasion. Rap1GAP could be a promising therapeutic target in combating cancer.
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Affiliation(s)
- Chin-King Looi
- School of Postgraduate Study, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia; (C.-K.L.); (L.-W.H.)
| | - Ling-Wei Hii
- School of Postgraduate Study, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia; (C.-K.L.); (L.-W.H.)
- School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia;
| | - Siew Ching Ngai
- School of Biosciences, Faculty of Science and Engineering, University of Nottingham Malaysia, Semenyih, Selangor 43500, Malaysia;
| | - Chee-Onn Leong
- School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia;
- Centre for Cancer and Stem Cells Research, Institute for Research, Development, and Innovation (IRDI), International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia
| | - Chun-Wai Mai
- School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia;
- Centre for Cancer and Stem Cells Research, Institute for Research, Development, and Innovation (IRDI), International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia
- Correspondence: ; Tel.: +60-3-2731-7596
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Ravi N, Yang M, Mylona N, Wennerberg J, Paulsson K. Global RNA Expression and DNA Methylation Patterns in Primary Anaplastic Thyroid Cancer. Cancers (Basel) 2020; 12:cancers12030680. [PMID: 32183222 PMCID: PMC7140095 DOI: 10.3390/cancers12030680] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 02/27/2020] [Accepted: 03/11/2020] [Indexed: 12/16/2022] Open
Abstract
Anaplastic thyroid cancer (ATC) is one of the most malignant tumors, with a median survival of only a few months. The tumorigenic processes of this disease have not yet been completely unraveled. Here, we report an mRNA expression and DNA methylation analysis of fourteen primary ATCs. ATCs clustered separately from normal thyroid tissue in unsupervised analyses, both by RNA expression and by DNA methylation. In expression analysis, enrichment of cell-cycle-related genes as well as downregulation of genes related to thyroid function were seen. Furthermore, ATC displayed a global hypomethylation of the genome but with hypermethylation of CpG islands. Notably, several cancer-related genes displayed a correlation between RNA expression and DNA methylation status, including MTOR, NOTCH1, and MAGI1. Furthermore, TSHR and SLC26A7, encoding the thyroid-stimulating hormone receptor and an iodine receptor highly expressed in normal thyroid, respectively, displayed low expression as well as aberrant gene body DNA methylation. This study is the largest investigation of global DNA methylation in ATC to date. It shows that aberrant DNA methylation is common in ATC and likely contributes to tumorigenesis in this disease. Future explorations of novel treatments should take this into consideration.
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Affiliation(s)
- Naveen Ravi
- Department of Laboratory Medicine, Division of Clinical Genetics, Lund University, SE-221 85 Lund, Sweden; (N.R.); (M.Y.)
| | - Minjun Yang
- Department of Laboratory Medicine, Division of Clinical Genetics, Lund University, SE-221 85 Lund, Sweden; (N.R.); (M.Y.)
| | - Nektaria Mylona
- Division of Oncology and Pathology, Clinical Sciences, Lund University and Skåne University Hospital, SE-221 85 Lund, Sweden;
| | - Johan Wennerberg
- Division of Otorhinolaryngology/Head and Neck Surgery, Clinical Sciences, Lund University and Skåne University Hospital, SE-221 85 Lund, Sweden;
| | - Kajsa Paulsson
- Department of Laboratory Medicine, Division of Clinical Genetics, Lund University, SE-221 85 Lund, Sweden; (N.R.); (M.Y.)
- Correspondence: ; Tel.: +46-46-222-69-95
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Zhou B, Xu J, Chen Y, Gao S, Feng X, Lu X. miR-200b/c-RAP1B axis represses tumorigenesis and malignant progression of papillary thyroid carcinoma through inhibiting the NF-κB/Twist1 pathway. Exp Cell Res 2019; 387:111785. [PMID: 31877303 DOI: 10.1016/j.yexcr.2019.111785] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 12/13/2019] [Accepted: 12/18/2019] [Indexed: 12/17/2022]
Abstract
Papillary thyroid carcinoma (PTC) is a common endocrine malignancy with an increasing occurrence and recurrence. MicroRNAs (miRNAs) have been widely acknowledged to be participated in human cancers. However, how these miRNAs exert roles and potential mechanisms in PTC regulatory networks is still lacking. The purpose of our study lies in discovering the regulatory basis of miR-200b/c and Rap1b for PTC tumorigenesis and malignant progression, as well as the underlying molecular mechanisms. Herein, miR-200b/c expression was sharply dropped and Rap1b expression was up-regulated in PTC cells and tissues samples when compared to normal thyroid epithelial cells and normal tissues. miR-200b/c targeted Rap1 directly and negatively regulated its expression. miR-200b/c overexpression suppressed proliferative, colony forming, migratory and invasive capabilities and EMT as well as elevated apoptosis of PTC cells through inhibiting Rap1b. Furthermore, xenograft experiments showed miR-200b/c overexpression constrained growth of PTC xenograft and EMT. miR-200b/c inhibited NF-κB/Twist1 signals via regulating the Rap1b expression in cells and animal models. Taken together, our study suggested that upregulation of miR-200b/c-RAP1B axis constrained PTC cell proliferation, invasion, migration and EMT. Also, the upregulation of miR-200b/c-RAP1B leaded to elevated apoptosis through inhibiting the NF-κB/Twist1 pathway, thus inhibiting PTC tumorigenesis and malignant progression.
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Affiliation(s)
- Bo Zhou
- Department of General Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, PR China; Department of Oncology Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471003, Henan, PR China
| | - Jing Xu
- Department of Gynaecology and Obstetrics, The Third Affiliated Hospital of Henan University of Science and Technology, Luoyang, 471003, Henan, PR China
| | - Ye Chen
- Department of Oncology Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471003, Henan, PR China
| | - Shegan Gao
- Department of Oncology Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471003, Henan, PR China
| | - Xiaoshan Feng
- Department of Oncology Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471003, Henan, PR China
| | - Xiubo Lu
- Department of General Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, PR China.
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Zafon C, Gil J, Pérez-González B, Jordà M. DNA methylation in thyroid cancer. Endocr Relat Cancer 2019; 26:R415-R439. [PMID: 31035251 DOI: 10.1530/erc-19-0093] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 04/29/2019] [Indexed: 12/15/2022]
Abstract
In recent years, cancer genomics has provided new insights into genetic alterations and signaling pathways involved in thyroid cancer. However, the picture of the molecular landscape is not yet complete. DNA methylation, the most widely studied epigenetic mechanism, is altered in thyroid cancer. Recent technological advances have allowed the identification of novel differentially methylated regions, methylation signatures and potential biomarkers. However, despite recent progress in cataloging methylation alterations in thyroid cancer, many questions remain unanswered. The aim of this review is to comprehensively examine the current knowledge on DNA methylation in thyroid cancer and discuss its potential clinical applications. After providing a general overview of DNA methylation and its dysregulation in cancer, we carefully describe the aberrant methylation changes in thyroid cancer and relate them to methylation patterns, global hypomethylation and gene-specific alterations. We hope this review helps to accelerate the use of the diagnostic, prognostic and therapeutic potential of DNA methylation for the benefit of thyroid cancer patients.
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Affiliation(s)
- Carles Zafon
- Diabetes and Metabolism Research Unit (VHIR) and Department of Endocrinology, University Hospital Vall d'Hebron and Autonomous University of Barcelona, Barcelona, Spain
- Consortium for the Study of Thyroid Cancer (CECaT), Catalonia, Spain
| | - Joan Gil
- Program of Predictive and Personalized Medicine of Cancer, Germans Trias i Pujol Research Institute (PMPPC-IGTP), Barcelona, Spain
| | - Beatriz Pérez-González
- Program of Predictive and Personalized Medicine of Cancer, Germans Trias i Pujol Research Institute (PMPPC-IGTP), Barcelona, Spain
| | - Mireia Jordà
- Consortium for the Study of Thyroid Cancer (CECaT), Catalonia, Spain
- Program of Predictive and Personalized Medicine of Cancer, Germans Trias i Pujol Research Institute (PMPPC-IGTP), Barcelona, Spain
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Foote AG, Wang Z, Kendziorski C, Thibeault SL. Tissue specific human fibroblast differential expression based on RNAsequencing analysis. BMC Genomics 2019; 20:308. [PMID: 31014251 PMCID: PMC6480701 DOI: 10.1186/s12864-019-5682-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 04/09/2019] [Indexed: 12/13/2022] Open
Abstract
Background Physical forces, such as mechanical stress, are essential for tissue homeostasis and influence gene expression of cells. In particular, the fibroblast has demonstrated sensitivity to extracellular matrices with assumed adaptation upon various mechanical loads. The purpose of this study was to compare the vocal fold fibroblast genotype, known for its unique mechanically stressful tissue environment, with cellular counterparts at various other anatomic locales to identify differences in functional gene expression profiles. Results By using RNA-seq technology, we identified differentially expressed gene programs (DEseq2) among seven normal human fibroblast primary cell lines from healthy cadavers, which included: vocal fold, trachea, lung, abdomen, scalp, upper gingiva, and soft palate. Unsupervised gene expression analysis yielded 6216 genes differentially expressed across all anatomic sites. Hierarchical cluster analysis revealed grouping based on anatomic site origin rather than donor, suggesting global fibroblast phenotype heterogeneity. Sex and age-related effects were negligible. Functional enrichment analyses based on separate post-hoc 2-group comparisons revealed several functional themes within the vocal fold fibroblast related to transcription factors for signaling pathways regulating pluripotency of stem cells and extracellular matrix components such as cell signaling, migration, proliferation, and differentiation potential. Conclusions Human fibroblasts display a phenomenon of global topographic differentiation, which is maintained in isolation via in vitro assays. Epigenetic mechanical influences on vocal fold tissue may play a role in uniquely modelling and maintaining the local environmental cellular niche during homeostasis with vocal fold fibroblasts distinctly specialized related to their anatomic positional and developmental origins established during embryogenesis. Electronic supplementary material The online version of this article (10.1186/s12864-019-5682-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Alexander G Foote
- Department of Surgery, Division of Otolaryngology - Head and Neck Surgery, University of Wisconsin, Madison, WI, USA
| | - Ziyue Wang
- Department of Statistics, University of Wisconsin - Madison, College of Letters and Science, Madison, WI, USA
| | - Christina Kendziorski
- Department of Biostatistics & Medical Informatics, University of Wisconsin - Madison, Madison, WI, USA
| | - Susan L Thibeault
- Department of Surgery, Division of Otolaryngology - Head and Neck Surgery, University of Wisconsin, Madison, WI, USA.
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Zarkesh M, Zadeh-Vakili A, Azizi F, Foroughi F, Akhavan MM, Hedayati M. Altered Epigenetic Mechanisms in Thyroid Cancer Subtypes. Mol Diagn Ther 2018; 22:41-56. [PMID: 28986854 DOI: 10.1007/s40291-017-0303-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Thyroid carcinoma (TC) is the most frequent malignant neoplasm of the endocrine system. Molecular methods for diagnosis of invasive thyroid disease can be effectively adopted. Epigenetic factors play an important role in the diversity patterns of gene expression and the phenotypic and biological characteristics of TC subtypes. We aimed to review epigenetic changes in the main subtypes of TC, along with a presentation of the methods that have examined these changes, and active clinical trials for the treatment of advanced TCs targeting epigenetic changes. A literature analysis was performed in MEDLINE using PubMed, Elsevier, and Google Scholar for studies published up to 2016, using the keywords: "Epigenetic alterations" OR "Epigenetic changes", "thyroid cancers", "papillary thyroid cancer", "medullary thyroid cancer", "follicular thyroid cancer", and "anaplastic thyroid cancer", which resulted in 310 articles in English. All related abstracts were reviewed and studies were included that were published in English, had available full text, and determined the details of the methods and materials associated with the epigenetic patterns of TC and its subtypes (100 articles). Analysis of epigenetic alterations in TC subtypes helps to identify pathogenesis and can play an important role in the classification and diagnosis of tumors. Epigenetic mechanisms, especially aberrant methylation of DNA and microRNAs (miRs), are likely to play an important role in thyroid tumorigenesis. Further studies are required to elucidate the role of histone modification mechanisms in TC development.
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Affiliation(s)
- Maryam Zarkesh
- Cellular and Molecular Endocrine Research Center (CMERC), Research Institute for Endocrine Sciences of Shahid Beheshti University of Medical Sciences, 19395-4763, Tehran, Iran
| | - Azita Zadeh-Vakili
- Cellular and Molecular Endocrine Research Center (CMERC), Research Institute for Endocrine Sciences of Shahid Beheshti University of Medical Sciences, 19395-4763, Tehran, Iran.
| | - Fereidoun Azizi
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Forough Foroughi
- Department of Pathology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maziar Mohammad Akhavan
- Skin Research Center School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mehdi Hedayati
- Cellular and Molecular Endocrine Research Center (CMERC), Research Institute for Endocrine Sciences of Shahid Beheshti University of Medical Sciences, 19395-4763, Tehran, Iran.
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Methylation level of Rap1GAP and the clinical significance in MDS. Oncol Lett 2018; 16:7287-7294. [PMID: 30546468 DOI: 10.3892/ol.2018.9503] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 04/25/2017] [Indexed: 12/21/2022] Open
Abstract
Previous studies on the pathogenesis of myelodysplastic syndrome (MDS) have identified multiple associated gene mutations, including mutations of tetmethylcytosinedioxygenase 2, isocitrate dehydrogenase [NADP(+)] 1 cytosolic, isocitrate dehydrogenase [NADP(+)] 2 mitochondrial and additional sex combs like 1 transcriptional regulator, all of which may be considered epigenetic regulators. Furthermore, mutations of RAS type GTPase family genes have been identified in 10-15% patients with MDS. The authors' previous study on the gene expression profile of cluster of differentiation 34+ cells using microarray analysis identified elevated expression of RAP1GTPase activating protein 1 (Rap1GAP) in patients with MDS compared with that in non-malignant blood diseases (NM) control group. To further investigate the mechanism of increased Rap1GAP expression, the methylation pattern of the promoter of this gene was determined in 86 patients with MDS (n=29), acute myeloid leukemia (AML) (n=31) or NM (n=26) using bisulfite-specific polymerase chain reaction and DNA sequencing. The results demonstrated that the methylation of Rap1GAP occurred in all 29 patients with MDS at multiple CpG sites. The methylation level of Rap1GAP in patients with MDS was decreased compared with that in patients with NM. Significant differences at 4CpG sites (5,7,8 and 12) of Rap1GAP promoter were identified between MDS and NM. Furthermore, based on the present clinical records of the patient cohort, the methylation status of Rap1GAP promoter did not appear to be associated with the clinicopathological characteristics of patients with MDS, including age, gender and International Prognosis Score System. The difference in methylation level at CpG site 8 of Rap1GAP promoter was identified to be significantly increased in patients with MDS-refractory anemia with ring sideroblasts compared with that in the MDS-refractory cytopenia with multilineage dysplasia or MDS-unclassified groups. The results of the present study suggest that patients with MDS exhibit a lower overall methylation level within Rap1GAP promoter compared with patients with NM or AML. In addition, the methylation level at the four identified CpG sites can distinguish between MDS and NM.
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Shah S, Brock EJ, Jackson RM, Ji K, Boerner JL, Sloane BF, Mattingly RR. Downregulation of Rap1Gap: A Switch from DCIS to Invasive Breast Carcinoma via ERK/MAPK Activation. Neoplasia 2018; 20:951-963. [PMID: 30144784 PMCID: PMC6106701 DOI: 10.1016/j.neo.2018.07.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 07/06/2018] [Accepted: 07/12/2018] [Indexed: 01/13/2023] Open
Abstract
Diagnosis of breast ductal carcinoma in situ (DCIS) presents a challenge since we cannot yet distinguish those cases that would remain indolent and not require aggressive treatment from cases that may progress to invasive ductal cancer (IDC). The purpose of this study is to determine the role of Rap1Gap, a GTPase activating protein, in the progression from DCIS to IDC. Immunohistochemistry (IHC) analysis of samples from breast cancer patients shows an increase in Rap1Gap expression in DCIS compared to normal breast tissue and IDCs. In order to study the mechanisms of malignant progression, we employed an in vitro three-dimensional (3D) model that more accurately recapitulates both structural and functional cues of breast tissue. Immunoblotting results show that Rap1Gap levels in MCF10.Ca1D cells (a model of invasive carcinoma) are reduced compared to those in MCF10.DCIS (a model of DCIS). Retroviral silencing of Rap1Gap in MCF10.DCIS cells activated extracellular regulated kinase (ERK) mitogen-activated protein kinase (MAPK), induced extensive cytoskeletal reorganization and acquisition of mesenchymal phenotype, and enhanced invasion. Enforced reexpression of Rap1Gap in MCF10.DCIS-Rap1GapshRNA cells reduced Rap1 activity and reversed the mesenchymal phenotype. Similarly, introduction of dominant negative Rap1A mutant (Rap1A-N17) in DCIS-Rap1Gap shRNA cells caused a reversion to nonmalignant phenotype. Conversely, expression of constitutively active Rap1A mutant (Rap1A-V12) in noninvasive MCF10.DCIS cells led to phenotypic changes that were reminiscent of Rap1Gap knockdown. Thus, reduction of Rap1Gap in DCIS is a potential switch for progression to an invasive phenotype. The Graphical Abstract summarizes these findings.
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Affiliation(s)
- Seema Shah
- Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Ethan J Brock
- Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Ryan M Jackson
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Kyungmin Ji
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Julie L Boerner
- Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Bonnie F Sloane
- Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA; Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Raymond R Mattingly
- Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA; Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA.
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23
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Zhao J, Mai C, Weng D, Chen C, Zhou Z, Liu Y, Zhou Z, Wang P. Reduced expression of Rap1GAP as a prognostic biomarker for primary gastric cancer patients. Cancer Biomark 2018; 22:375-384. [PMID: 29758923 DOI: 10.3233/cbm-170832] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Rap1GAP, a member of the family of GTPase-activating proteins, is reported to be involved in cancer development and progression. OBJECTIVE The study aimed to investigate the expression and prognostic value of Rap1GAP in gastric cancer patients. METHODS Real-time quantitative polymerase chain reaction and western blotting were performed to examine Rap1GAP expression in tumorous and matched adjacent non-tumorous gastric tissues. Immunohistochemical staining was used to analyze Rap1GAP expression in 456 gastric cancer tissues. The correlation between Rap1GAP expression level and clinicopathological features as well as gastric cancer prognosis was analyzed. RESULTS Rap1GAP expression was remarkably decreased in tumor tissues at mRNA (p= 0.012) and protein (p= 0.034) level. Clinicopathological analysis revealed that low Rap1GAP expression was significantly correlated with tumor size (p= 0.033), histological grade (p= 0.034), T classification (p= 0.012), N classification (p= 0.006) and clinical stage (p= 0.005). Kaplan-Meier survival analysis revealed the association between low Rap1GAP expression and poor survival in gastric cancer patients. Furthermore, multivariate Cox regression analysis showed that Rap1GAP expression was an independent prognostic factor (p= 0.02). CONCLUSION Rap1GAP may play a significant role in gastric cancer progression and act as a valuable prognostic marker for gastric cancer.
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Affiliation(s)
- Jingjing Zhao
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in Southern China, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China.,Department of Biotherapy, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China.,Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in Southern China, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Cong Mai
- Department of Abdominal Oncosurgery, The Affiliated Cancer Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in Southern China, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Desheng Weng
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in Southern China, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China.,Department of Biotherapy, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Changlong Chen
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in Southern China, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China.,Department of Biotherapy, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Ziqi Zhou
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in Southern China, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China.,Department of Biotherapy, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Yuan Liu
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in Southern China, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China.,Department of Biotherapy, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Zhiwei Zhou
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in Southern China, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China.,Department of Gastric and Pancreatic Surgery, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Peng Wang
- Department of Emergency Medicine, Sun Yat-Sen Memorial Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
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24
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Li Q, Teng Y, Wang J, Yu M, Li Y, Zheng H. Rap1 promotes proliferation and migration of vascular smooth muscle cell via the ERK pathway. Pathol Res Pract 2018; 214:1045-1050. [PMID: 29789158 DOI: 10.1016/j.prp.2018.04.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 03/29/2018] [Accepted: 04/13/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Rap1 is involved in a multitude of cellular signal transduction pathways, which has extensively been linked to cell proliferation and migration. It has been shown to be important in the regulation of physiological and pathological processes. The present study aims to elucidate its detailed mechanistic in proliferation and migration. MATERIAL/METHODS Vascular smooth muscle cells (VSMCs) were transfected with pcDNA3.1(empty vector), pcDNA3.1 containing Myc-Tagged-Rap1V12 (Rap1V12) or pcDNA3.1 containing Flag-Tagged-Rap1GAP (Rap1GAP).The cells were presence or absence with 8CPT-2'OMe-cAMP or SDF-1 before transfection. The proliferation and migration were examined by 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) and transwell analysis, respectively. Afterwards, western blot was performed to detect the expression of ERK, phosphorylated-ERK, Rap1, Rap1GAP and Rap1GTP. RESULTS The results showed that proliferation, migration and the expression of Rap1, Rap1GAP, p-EKR were boosted in treatment of Rap1V12-transfection. However, Rap1GAP presented the opposite effects. Subsequently, VSMCs were pretreatment with stimulators Rap1 guanine exchange factor (Rap1GEF), 8CPT-2'OMe-cAMP and stromal cell-derived factor 1 (SDF-1), then transfected with different vectors and the expression of Rap1, Rap1GAP and p-EKR were obviously decreased. CONCLUSIONS Taken together, these findings indicated for the first time that Rap1 was essential for the VSMCs in proliferation and migration by ERK signaling pathway.
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Affiliation(s)
- Qin Li
- Department of Vascular Surgery, Union Hospital Affiliated with Tongji Medical College of Huazhong University of Science and Technology, China
| | - Yunfei Teng
- Department of Vascular Surgery, Union Hospital Affiliated with Tongji Medical College of Huazhong University of Science and Technology, China
| | - Jian Wang
- Department of Vascular Surgery, Union Hospital Affiliated with Tongji Medical College of Huazhong University of Science and Technology, China
| | - Miao Yu
- Department of Vascular Surgery, Union Hospital Affiliated with Tongji Medical College of Huazhong University of Science and Technology, China
| | - Yiqing Li
- Department of Vascular Surgery, Union Hospital Affiliated with Tongji Medical College of Huazhong University of Science and Technology, China
| | - Hong Zheng
- Department of Vascular Surgery, Union Hospital Affiliated with Tongji Medical College of Huazhong University of Science and Technology, China.
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25
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Gao WL, Ye GC, Liu LW, Wei L. The downregulation of Rap1 GTPase-activating protein is associated with a poor prognosis in colorectal cancer and may impact on tumor progression. Oncol Lett 2018; 15:7661-7668. [PMID: 29725465 PMCID: PMC5920375 DOI: 10.3892/ol.2018.8305] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 02/15/2018] [Indexed: 12/18/2022] Open
Abstract
Rap1 GTPase-activating protein (Rap1GAP) has been reported to serve an important role in various types of cancer by specific stimulation as a negative regulator of Rap1 activity. However, the role of Rap1GAP in colorectal cancer (CRC) has yet to be fully elucidated. The aim of the present study was to investigate the expression of Rap1GAP in CRC tissues and to elucidate its clinical significance. The expression of Rap1GAP, matrix metallopeptidase 9 (MMP-9) and E-cadherin in 227 CRC tissues and paired para-carcinoma tissues was detected by immunohistochemistry. Associations between Rap1GAP expression and clinicopathological characteristics, and between Rap1GAP expression and prognostic value (OS + DFS) in CRC were investigated. Furthermore, associations between Rap1GAP expression and MMP-9 expression, and between Rap1GAP expression and E-cadherin expression were also investigated. Rap1GAP expression was markedly downregulated in CRC tissues compared with para-carcinoma tissues. Decreased expression of Rap1GAP was significantly associated with depth of invasion, lymph node metastasis, advanced Tumor-Node-Metastasis stage and a poor prognosis in patients with CRC following surgery. Furthermore, univariate and multivariate analyses revealed that Rap1GAP was an independent poor prognostic factor for disease-free survival and overall survival. In addition, Rap1GAP expression was negatively associated with MMP-9 and positively associated with E-cadherin in 227 CRC samples. In brief, the results of the present study suggested that Rap1GAP may be involved in tumor progression in CRC and may serve as a potential target for prognostic prediction of patients with CRC.
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Affiliation(s)
- Wei-Li Gao
- Department of General Surgery, Huzhou Central Hospital, Zhejiang University, Huzhou, Zhejiang 313000, P.R. China
| | - Guo-Chao Ye
- Department of General Surgery, Huzhou Central Hospital, Zhejiang University, Huzhou, Zhejiang 313000, P.R. China
| | - Li-Wei Liu
- Department of General Surgery, Huzhou Central Hospital, Zhejiang University, Huzhou, Zhejiang 313000, P.R. China
| | - Lu Wei
- Department of General Surgery, Huzhou Central Hospital, Zhejiang University, Huzhou, Zhejiang 313000, P.R. China
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26
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Yang Y, Zhang J, Yan Y, Cai H, Li M, Sun K, Wang J, Liu X, Wang J, Duan X. Low expression of Rap1GAP is associated with epithelial-mesenchymal transition (EMT) and poor prognosis in gastric cancer. Oncotarget 2018; 8:8057-8068. [PMID: 28009991 PMCID: PMC5352382 DOI: 10.18632/oncotarget.14074] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 11/21/2016] [Indexed: 12/16/2022] Open
Abstract
Rap1GAP is a crucial tumor suppressor, but its role in gastric cancer (GC) is little investigated. In this study, we found that the expression of Rap1GAP was decreased in GC. Low expression of Rap1GAP was positively correlated with advanced pTNM stage, Borrmann types, tumor diameter and poor prognosis in patients with GC. Low expression of Rap1GAP correlated with loss of E-cadherin expression, and anomalous positivity of MMP2 expression. Multivariate analysis showed that low expression of Rap1GAP was an independent prognostic factor. Ectopic expression of Rap1GAP impaired cell migration and invasion, promoted the expression of E-cadherin and decreased the expression of MMP2. These results suggest that Rap1GAP functions as a novel suppressor of EMT and tumor metastasis in GC, and loss of Rap1GAP predicts poor prognosis in GC.
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Affiliation(s)
- Ya Yang
- The Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China.,Department III of Radiation Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, Henan, China
| | - Jia Zhang
- The Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Yan Yan
- The Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Hui Cai
- Department of Vascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Min Li
- The Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Kai Sun
- The Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Jizhao Wang
- The Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Xu Liu
- The Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Jiansheng Wang
- The Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Xiaoyi Duan
- Department of Radiology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
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27
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Tesselaar MH, Smit JW, Nagarajah J, Netea-Maier RT, Plantinga TS. Pathological processes and therapeutic advances in radioiodide refractory thyroid cancer. J Mol Endocrinol 2017; 59:R141-R154. [PMID: 28931558 DOI: 10.1530/jme-17-0134] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 09/20/2017] [Indexed: 12/19/2022]
Abstract
While in most patients with non-medullary thyroid cancer (TC), disease remission is achieved by thyroidectomy and ablation of tumor remnants by radioactive iodide (RAI), a substantial subgroup of patients with metastatic disease present tumor lesions that have acquired RAI resistance as a result of dedifferentiation. Although oncogenic mutations in BRAF, TERT promoter and TP53 are associated with an increased propensity for induction of dedifferentiation, the role of genetic and epigenetic aberrations and their effects on important intracellular signaling pathways is not yet fully elucidated. Also immune, metabolic, stemness and microRNA pathways have emerged as important determinants of TC dedifferentiation and RAI resistance. These signaling pathways have major clinical implications since their targeting could inhibit TC progression and could enable redifferentiation to restore RAI sensitivity. In this review, we discuss the current insights into the pathological processes conferring dedifferentiation and RAI resistance in TC and elaborate on novel advances in diagnostics and therapy to improve the clinical outcome of RAI-refractory TC patients.
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Affiliation(s)
- Marika H Tesselaar
- Department of PathologyRadboud University Medical Center, Nijmegen, The Netherlands
| | - Johannes W Smit
- Internal MedicineDivision of Endocrinology Radboud University Medical Center, Nijmegen, The Netherlands
| | - James Nagarajah
- Radiology & Nuclear MedicineRadboud University Medical Center, Nijmegen, The Netherlands
| | - Romana T Netea-Maier
- Internal MedicineDivision of Endocrinology Radboud University Medical Center, Nijmegen, The Netherlands
| | - Theo S Plantinga
- Department of PathologyRadboud University Medical Center, Nijmegen, The Netherlands
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28
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Bisarro dos Reis M, Barros-Filho MC, Marchi FA, Beltrami CM, Kuasne H, Pinto CAL, Ambatipudi S, Herceg Z, Kowalski LP, Rogatto SR. Prognostic Classifier Based on Genome-Wide DNA Methylation Profiling in Well-Differentiated Thyroid Tumors. J Clin Endocrinol Metab 2017; 102:4089-4099. [PMID: 28938489 PMCID: PMC5673278 DOI: 10.1210/jc.2017-00881] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 08/11/2017] [Indexed: 12/15/2022]
Abstract
Context Even though the majority of well-differentiated thyroid carcinoma (WDTC) is indolent, a number of cases display an aggressive behavior. Cumulative evidence suggests that the deregulation of DNA methylation has the potential to point out molecular markers associated with worse prognosis. Objective To identify a prognostic epigenetic signature in thyroid cancer. Design Genome-wide DNA methylation assays (450k platform, Illumina) were performed in a cohort of 50 nonneoplastic thyroid tissues (NTs), 17 benign thyroid lesions (BTLs), and 74 thyroid carcinomas (60 papillary, 8 follicular, 2 Hürthle cell, 1 poorly differentiated, and 3 anaplastic). A prognostic classifier for WDTC was developed via diagonal linear discriminant analysis. The results were compared with The Cancer Genome Atlas (TCGA) database. Results A specific epigenetic profile was detected according to each histological subtype. BTLs and follicular carcinomas showed a greater number of methylated CpG in comparison with NTs, whereas hypomethylation was predominant in papillary and undifferentiated carcinomas. A prognostic classifier based on 21 DNA methylation probes was able to predict poor outcome in patients with WDTC (sensitivity 63%, specificity 92% for internal data; sensitivity 64%, specificity 88% for TCGA data). High-risk score based on the classifier was considered an independent factor of poor outcome (Cox regression, P < 0.001). Conclusions The methylation profile of thyroid lesions exhibited a specific signature according to the histological subtype. A meaningful algorithm composed of 21 probes was capable of predicting the recurrence in WDTC.
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Affiliation(s)
- Mariana Bisarro dos Reis
- International Research Center, CIPE, A.C. Camargo Cancer Center and National Institute of Science and Technology in Oncogenomics, São Paulo 01509-010, SP, Brazil
- Department of Urology, Faculty of Medicine, UNESP, São Paulo State University, Botucatu 18618-970, SP, Brazil
| | - Mateus Camargo Barros-Filho
- International Research Center, CIPE, A.C. Camargo Cancer Center and National Institute of Science and Technology in Oncogenomics, São Paulo 01509-010, SP, Brazil
| | - Fábio Albuquerque Marchi
- International Research Center, CIPE, A.C. Camargo Cancer Center and National Institute of Science and Technology in Oncogenomics, São Paulo 01509-010, SP, Brazil
| | - Caroline Moraes Beltrami
- International Research Center, CIPE, A.C. Camargo Cancer Center and National Institute of Science and Technology in Oncogenomics, São Paulo 01509-010, SP, Brazil
| | - Hellen Kuasne
- International Research Center, CIPE, A.C. Camargo Cancer Center and National Institute of Science and Technology in Oncogenomics, São Paulo 01509-010, SP, Brazil
| | | | - Srikant Ambatipudi
- Epigenetics Group; International Agency for Research on Cancer (IARC), Lyon 69372, France
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 1TH, United Kingdom
| | - Zdenko Herceg
- Epigenetics Group; International Agency for Research on Cancer (IARC), Lyon 69372, France
| | - Luiz Paulo Kowalski
- Department of Head and Neck Surgery and Otorhinolaryngology, A.C. Camargo Cancer Center, São Paulo 01509-010, SP, Brazil
| | - Silvia Regina Rogatto
- Department of Urology, Faculty of Medicine, UNESP, São Paulo State University, Botucatu 18618-970, SP, Brazil
- Department of Clinical Genetics, Vejle Hospital and Institute of Regional Health Research, University of Southern Denmark, Vejle, 7100, Denmark
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29
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Rap1GAP inhibits tumor progression in endometrial cancer. Biochem Biophys Res Commun 2017; 485:476-483. [PMID: 28196746 DOI: 10.1016/j.bbrc.2017.02.044] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Accepted: 02/07/2017] [Indexed: 01/04/2023]
Abstract
OBJECTIVE Endometrioid adenocarcinoma (EAC) is a common endometrial cancer with recent dramatic increases in incidence. Previous findings indicate that Rap1GAP acts as a tumor suppressor inhibiting Ras superfamily protein Rap1 in multiple aggressive carcinomas; however, Rap1GAP expression in EAC has not been investigated. In this study, the tumor suppressing activity of Rap1GAP in EAC was explored. METHODS EAC cell lines were used to examine Rap1GAP levels by real-time RT-PCR and western blotting and the effects of Rap1GAP on cancer cell invasion and migration. Rap1GAP expression was analyzed by immunohistochemical staining for Rap1GAP, E-cadherin in surgically resected tumors of 114 EAC patients scored according to EAC differentiation grade. Prognostic variables such as age, stage, grade, tumor size, and immunostaining for Rap1GAP, E-cadherin were evaluated using Cox regression multivariate analysis. RESULTS Low Rap1GAP expression was detected in poorly differentiated EAC cells. Rap1GAP deficiency significantly accelerated while Rap1 deficiency decreased cancer cell migration and invasion. Patients with higher Rap1GAP, E-cadherin, and especially combined Rap1GAP/E-cadherin levels had better overall survival than EAC patients with no or weak expression. In addition, Rap1GAP expression was an independent prognostic factor in EAC. CONCLUSIONS Inhibition of Rap1GAP expression increases EAC cell migration and invasion through upregulation of Rap1. Low expression of Rap1GAP correlates with poor EAC differentiation. Our findings suggest that Rap1GAP is an important tumor suppressor with high prognostic value in EAC.
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30
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Abstract
Ras-associated protein-1 (Rap1), a small GTPase in the Ras-related protein family, is an important regulator of basic cellular functions (e.g., formation and control of cell adhesions and junctions), cellular migration, and polarization. Through its interaction with other proteins, Rap1 plays many roles during cell invasion and metastasis in different cancers. The basic function of Rap1 is straightforward; it acts as a switch during cellular signaling transduction and regulated by its binding to either guanosine triphosphate (GTP) or guanosine diphosphate (GDP). However, its remarkably diverse function is rendered by its interplay with a large number of distinct Rap guanine nucleotide exchange factors and Rap GTPase activating proteins. This review summarizes the mechanisms by which Rap1 signaling can regulate cell invasion and metastasis, focusing on its roles in integrin and cadherin regulation, Rho GTPase control, and matrix metalloproteinase expression.
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Affiliation(s)
- Yi-Lei Zhang
- Key Laboratory of Molecular Biophysics of Ministry of Education, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Ruo-Chen Wang
- Key Laboratory of Molecular Biophysics of Ministry of Education, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Ken Cheng
- Sun Yat-sen University, Guangzhou 510275, China
| | - Brian Z Ring
- Key Laboratory of Molecular Biophysics of Ministry of Education, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Li Su
- Key Laboratory of Molecular Biophysics of Ministry of Education, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.,Research Institute of Huazhong University of Science and Technology in Shenzhen, Shenzhen 518063, China
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31
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Freeman SA, Christian S, Austin P, Iu I, Graves ML, Huang L, Tang S, Coombs D, Gold MR, Roskelley CD. Applied stretch initiates directional invasion through the action of Rap1 GTPase as a tension sensor. J Cell Sci 2016; 130:152-163. [PMID: 27199371 DOI: 10.1242/jcs.180612] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 05/13/2016] [Indexed: 12/17/2022] Open
Abstract
Although it is known that a stiffening of the stroma and the rearrangement of collagen fibers within the extracellular matrix facilitate the movement of tumor cells away from the primary lesion, the underlying mechanisms responsible are not fully understood. We now show that this invasion, which can be initiated by applying tensional loads to a three-dimensional collagen gel matrix in culture, is dependent on the Rap1 GTPases (Rap1a and Rap1b, referred to collectively as Rap1). Under these conditions Rap1 activity stimulates the formation of focal adhesion structures that align with the tensional axis as single tumor cells move into the matrix. These effects are mediated by the ability of Rap1 to induce the polarized polymerization and retrograde flow of actin, which stabilizes integrins and recruits vinculin to preformed adhesions, particularly those near the leading edge of invasive cells. Rap1 activity also contributes to the tension-induced collective invasive elongation of tumor cell clusters and it enhances tumor cell growth in vivo Thus, Rap1 mediates the effects of increased extracellular tension in multiple ways that are capable of contributing to tumor progression when dysregulated.
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Affiliation(s)
- Spencer A Freeman
- Program in Cell Biology, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Sonja Christian
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, V6T 1Z3, Canada.,Life Sciences Institute, University of British Columbia, 2350 Health Sciences Road, Vancouver, British Columbia, V6T 1Z3, Canada
| | - Pamela Austin
- Life Sciences Institute, University of British Columbia, 2350 Health Sciences Road, Vancouver, British Columbia, V6T 1Z3, Canada.,Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, V6T 1Z3, Canada
| | - Irene Iu
- Life Sciences Institute, University of British Columbia, 2350 Health Sciences Road, Vancouver, British Columbia, V6T 1Z3, Canada.,Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, V6T 1Z3, Canada
| | - Marcia L Graves
- Life Sciences Institute, University of British Columbia, 2350 Health Sciences Road, Vancouver, British Columbia, V6T 1Z3, Canada.,Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, V6T 1Z3, Canada
| | - Lin Huang
- Department of Electrical Engineering, University of British Columbia, Vancouver, British Columbia, V6T 1Z3, Canada
| | - Shuo Tang
- Department of Electrical Engineering, University of British Columbia, Vancouver, British Columbia, V6T 1Z3, Canada
| | - Daniel Coombs
- Department of Mathematics, University of British Columbia, Vancouver, British Columbia, V6T 1Z3, Canada
| | - Michael R Gold
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, V6T 1Z3, Canada.,Life Sciences Institute, University of British Columbia, 2350 Health Sciences Road, Vancouver, British Columbia, V6T 1Z3, Canada
| | - Calvin D Roskelley
- Life Sciences Institute, University of British Columbia, 2350 Health Sciences Road, Vancouver, British Columbia, V6T 1Z3, Canada .,Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, V6T 1Z3, Canada
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32
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Li D, Gao M, Li X, Xing M. Molecular Aberrance in Papillary Thyroid Microcarcinoma Bearing High Aggressiveness: Identifying a "Tibetan Mastiff Dog" From Puppies. J Cell Biochem 2016; 117:1491-6. [PMID: 26841328 DOI: 10.1002/jcb.25506] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 02/01/2016] [Indexed: 11/11/2022]
Abstract
Today the most common differentiated thyroid cancer in many countries is papillary thyroid microcarcinoma (PTMC). Although the majority of PTMCs exhibit an indolent clinical course, a few possess high risk for aggressiveness with tumor invasion, metastasis, and even patient mortality. This imposes significant confusion and often dilemma in the clinical management of PTMC. The present review summarizes the molecular pathogenesis, particularly the major genetic alterations, of PTMC that may have prognostic values in assisting risk stratification of this cancer and identification of the most aggressive cases from the many well-behaving cases. J. Cell. Biochem. 117: 1491-1496, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Dapeng Li
- Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Ming Gao
- Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Xiaolong Li
- Department of Neuro-Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas, 77025
| | - Mingzhao Xing
- Laboratory for Cellular and Molecular Thyroid Research, Division of Endocrinology, Diabetes and Metabolism, The Johns Hopkins University School of Medicine, Baltimore, Maryland, 21287
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Zhang L, Cheng X, Gao Y, Zhang C, Bao J, Guan H, Yu H, Lu R, Xu Q, Sun Y. Curcumin inhibits metastasis in human papillary thyroid carcinoma BCPAP cells via down-regulation of the TGF-β/Smad2/3 signaling pathway. Exp Cell Res 2016; 341:157-65. [PMID: 26826337 DOI: 10.1016/j.yexcr.2016.01.006] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 01/12/2016] [Accepted: 01/16/2016] [Indexed: 01/07/2023]
Abstract
Thyroid cancers usually possess a good prognosis while the risks of recurrence and metastasis turn out to be a disturbing issue. Curcumin [bis(4-hydroxy-3-methoxy-phenyl)-1,6-heptadiene-3,5-dione] is a natural polyphenolic compound mainly found in turmeric (Curcuma longa). Our previous studies have demonstrated that curcumin showed proliferation-inhibitory and apoptosis-inducing effects on K1 papillary thyroid cancer cells. However, the mechanism underlying the inhibition effects of curcumin on thyroid cancer cells remains unclear. Herein, we demonstrated that curcumin remarkably increased the expression of the epithelial marker E-cadherin and repressed the expression of the mesenchymal marker vimentin in human papillary thyroid carcinoma BCPAP cells. Curcumin also suppressed multiple metastatic steps of BCPAP cells, including cell attachment, spreading as well as migration. In addition, the transcription, secretion and activation of matrix metalloproteinases (MMPs) induced by transforming growth factor-β1 (TGF-β1) in BCPAP cells were mitigated upon curcumin treatment. Further evidence showed that curcumin decreased TGF-β1-mediated phosphorylation of Smad2 and Smad3. These results revealed that curcumin inhibited the TGF-β1-induced epithelial-mesenchymal transition (EMT) via down-regulation of Smad2/3 signaling pathways. Our findings provide new evidence that the anti-metastatic and anti-EMT activities of curcumin may contribute to the development of chemo-preventive agents for thyroid cancer treatment.
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Affiliation(s)
- Li Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu, China; Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu, China
| | - Xian Cheng
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu, China
| | - Yanyan Gao
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu, China
| | - Chiyu Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Jiandong Bao
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu, China
| | - Haixia Guan
- Department of Endocrinology & Metabolism and Institute of Endocrinology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Huixin Yu
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu, China
| | - Rongrong Lu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.
| | - Qiang Xu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu, China.
| | - Yang Sun
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu, China.
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Zhou L, Patel KN. The management of thyroid nodules and cancer in the molecular era. INTERNATIONAL JOURNAL OF ENDOCRINE ONCOLOGY 2015. [DOI: 10.2217/ije.15.18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The incidence of thyroid cancer is increasing worldwide. Current standards in the diagnosis and management of thyroid cancer are limited by the uncertainty of fine-needle aspiration samples that are indeterminate in nature. Molecular markers have the potential to improve the accuracy of thyroid fine-needle aspiration and to aid the physician in giving a more accurate diagnosis and prognosis. This paper summarizes the various molecular markers currently available.
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Affiliation(s)
- Ling Zhou
- Division of Endocrine Surgery, Department of Surgery, Biochemistry & Otolaryngology, Thyroid Cancer Interdisciplinary Program, NYU Langone Medical Center, 530 First Avenue, Suite 6H, NY 10016, USA
| | - Kepal N Patel
- Division of Endocrine Surgery, Department of Surgery, Biochemistry & Otolaryngology, Thyroid Cancer Interdisciplinary Program, NYU Langone Medical Center, 530 First Avenue, Suite 6H, NY 10016, USA
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Mato E, Barceló-Batllori S, Orera I, Selva L, Corra M, González C, Bell O, Lerma E, Moral A, Pérez JI, de Leiva A. The proteomic 2D-DIGE approach reveals the protein voltage-dependent anion channel 2 as a potential therapeutic target in epithelial thyroid tumours. Mol Cell Endocrinol 2015; 404:37-45. [PMID: 25617717 DOI: 10.1016/j.mce.2015.01.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 12/29/2014] [Accepted: 01/15/2015] [Indexed: 02/08/2023]
Abstract
We investigated the role of VDAC2 in human epithelial thyroid tumours using proteomic 2D-DIGE analysis and qRT-PCR. We found a significant up-regulation of VDAC2 in thyroid tumours and in thyroid tumour cell lines (TPC-1 and CAL-62). We did not detect overexpression of VDAC2 in a normal thyroid cell line (Nthy-ori 3-1). Silico analysis revealed that two proteins, BAK1 and BAX, had a strong relationship with VDAC2. BAK1 gene expression showed down-regulation in thyroid tumours (follicular and papillary tumours) and in TPC-1 and CAL-62 cell lines. Transient knockdown of VDAC2 in TPC-1 and CAL-62 promoted upregulation of the BAK1 gene and protein expression, and increased susceptibility to sorafenib treatment. Overexpression of the BAK1 gene in CAL-62 showed lower sorafenib sensitivity than VDAC2 knockdown cells. We propose the VDAC2 gene as a novel therapeutic target in these tumours.
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Affiliation(s)
- Eugenia Mato
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institut d'Investigació Biomèdica Sant Pau (IIB), Autonomous University, Barcelona, Spain; EDUAB-HSP Neoplasia Thyroid Study Group, IIB, Autonomous University, Barcelona, Spain.
| | - Sílvia Barceló-Batllori
- Proteomics Unit, Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain
| | - Irene Orera
- Centro Investigaciones Biomédicas Aragón (CIBA), Instituto Aragonés de Ciencias de la Salud-Instituto de Investigación Sanitaria Aragón (IACS-IIS), Zaragoza, Spain
| | - Laia Selva
- EDUAB-HSP Neoplasia Thyroid Study Group, IIB, Autonomous University, Barcelona, Spain
| | - Martina Corra
- EDUAB-HSP Neoplasia Thyroid Study Group, IIB, Autonomous University, Barcelona, Spain
| | - Cintia González
- EDUAB-HSP Neoplasia Thyroid Study Group, IIB, Autonomous University, Barcelona, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institut d'Investigació Biomèdica Sant Pau (IIB), Autonomous University, Barcelona, Spain
| | - Olga Bell
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institut d'Investigació Biomèdica Sant Pau (IIB), Autonomous University, Barcelona, Spain; EDUAB-HSP Neoplasia Thyroid Study Group, IIB, Autonomous University, Barcelona, Spain
| | - Enrique Lerma
- Department of Pathology, Hospital de la Santa Creu i Sant Pau, Autonomous University, Barcelona, Spain
| | - Antonio Moral
- General Surgery, Hospital de la Santa Creu I Sant Pau, Barcelona, Spain
| | | | - Alberto de Leiva
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institut d'Investigació Biomèdica Sant Pau (IIB), Autonomous University, Barcelona, Spain; EDUAB-HSP Neoplasia Thyroid Study Group, IIB, Autonomous University, Barcelona, Spain
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Faam B, Ghaffari MA, Ghadiri A, Azizi F. Epigenetic modifications in human thyroid cancer. Biomed Rep 2014; 3:3-8. [PMID: 25469237 DOI: 10.3892/br.2014.375] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 09/09/2014] [Indexed: 12/24/2022] Open
Abstract
Thyroid carcinoma is the most common endocrine malignancy of the endocrine organs, and its incidence rate has steadily increased over the last decade. Over 95% of thyroid carcinoma is derived from follicular cells that have a spectrum of differentiation to the most invasive malignancy. The molecular pathogenesis of thyroid cancer remains to be clarified, although activating the RET, RAS and BRAF oncogenes have been well characterized. Increasing evidence from previous studies demonstrates that acquired epigenetic abnormalities participating with genetic alteration results in altered patterns of gene expression/function. Aberrant DNA methylation has been established in the CpG regions and microRNAs (miRNAs) expression profile recognized in cancer development. In the present review, a literature review was performed using MEDLINE and PubMed with the terms 'epigenetic patterns in thyroid cancer [or papillary thyroid carcinoma (PTC), follicular thyroid carcinoma (FTC), medullary thyroid cancer (MTC), anaplastic thyroid cancer (ATC)]', 'DNA methylation in thyroid cancer (or PTC, FTC, MTC, ATC)', 'miRNA expression in thyroid cancer (or PTC, FTC, MTC, ATC)', 'epigenetic patterns in cancer' and the current understanding of epigenetic patterns in thyroid cancer was discussed.
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Affiliation(s)
- Bita Faam
- Cellular and Molecular Research Center, Jundishapur University of Medical Sciences, Ahvaz, Tehran, Iran
| | - Mohammad Ali Ghaffari
- Cellular and Molecular Research Center, Department of Biochemistry, School of Medicine, Tehran, Iran
| | - Ata Ghadiri
- Cellular and Molecular Research Center, Jundishapur University of Medical Sciences, Ahvaz, Tehran, Iran ; Department of Immunology, Faculty of Medicine, Jundishapur University of Medical Sciences, Ahvaz, Tehran, Iran
| | - Fereidoun Azizi
- Endocrine Research Center, Research Institute for Endocrine Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Khan MS, Pandith AA, Masoodi SR, Wani KA, Ul Hussain M, Mudassar S. Epigenetic silencing of TSHR gene in thyroid cancer patients in relation to their BRAF V600E mutation status. Endocrine 2014; 47:449-55. [PMID: 24927793 DOI: 10.1007/s12020-014-0319-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Accepted: 05/23/2014] [Indexed: 12/18/2022]
Abstract
Promoter hypermethylation of multiple genes have been identified to play a role in thyroid cancers and most prominent among them is TSHR gene promoter hypermethylation in particular showing a close association with BRAF gene-altered status. Thus, the aim of this study was to analyze the TSHR gene promoter hypermethylation in a series of thyroid tumor tissues in the backdrop of their BRAF gene mutational status. Methylation-specific PCR (MS-PCR) was used for detection of promoter methylation while BRAF gene mutational status was analyzed by PCR followed by DNA sequencing in the same series of 60 thyroid tumor tissues. The promoter region of TSHR gene was found to be methylated in 25 % (15 of 60) of the thyroid cancer patients. Patients having elevated TSH levels showed strong association with methylation (OR = 4.0, P = 0.02). BRAF V600E mutation was found in 25 % (15 of 60) patients and among them TSHR promoter was methylated in 73.3 % (11 of 15) patients and only 26.7 % (4 of 15) patients with mutated BRAF showed the absence of TSHR promoter methylation. We found a significant association between the presence of methylation in TSHR with the BRAF V600E mutation-positive cases (P < 0.05). In conclusion, our study showed a high implication of TSHR gene methylation and its significant association with BRAF V600E mutation in thyroid tumors, depicting a positive connection between TSHR pathway and MAP Kinase pathway.
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Affiliation(s)
- Mosin S Khan
- Department of Clinical Biochemistry, Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, 190011, Kashmir, India
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Wang D, Zhang P, Gao K, Tang Y, Jin X, Zhang Y, Yi Q, Wang C, Yu L. PLK1 and β-TrCP-dependent ubiquitination and degradation of Rap1GAP controls cell proliferation. PLoS One 2014; 9:e110296. [PMID: 25329897 PMCID: PMC4201484 DOI: 10.1371/journal.pone.0110296] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 09/11/2014] [Indexed: 01/31/2023] Open
Abstract
Rap1GAP is a GTPase-activating protein (GAP) that specifically stimulates the GTP hydrolysis of Rap1 GTPase. Although Rap1GAP is recognized as a tumor suppressor gene and downregulated in various cancers, little is known regarding the regulation of Rap1GAP ubiquitination and degradation under physiological conditions. Here, we demonstrated that Rap1GAP is ubiquitinated and degraded through proteasome pathway in mitosis. Proteolysis of Rap1GAP requires the PLK1 kinase and β-TrCP ubiquitin ligase complex. We revealed that PLK1 interacts with Rap1GAP in vivo through recognition of an SSP motif within Rap1GAP. PLK1 phosphorylates Ser525 in conserved 524DSGHVS529 degron of Rap1GAP and promotes its interaction with β-TrCP. We also showed that Rap1GAP was a cell cycle regulator and that tight regulation of the Rap1GAP degradation in mitosis is required for cell proliferation.
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Affiliation(s)
- Dejie Wang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, P.R. China
- Department of Gastroenterology, Jiangxi Institute of Gastroenterology & Hepatology, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, P. R. China
| | - Pingzhao Zhang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, P.R. China
- Institutes of Biomedical Sciences, Fudan University, Shanghai, P.R. China
| | - Kun Gao
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, P.R. China
| | - Yan Tang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, P.R. China
| | - Xiaofeng Jin
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, P.R. China
| | - Yuanyuan Zhang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, P.R. China
| | - Qing Yi
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, Center for Cancer Immunology Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Chenji Wang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, P.R. China
| | - Long Yu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, P.R. China
- Institutes of Biomedical Sciences, Fudan University, Shanghai, P.R. China
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39
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Nuclear SIPA1 activates integrin β1 promoter and promotes invasion of breast cancer cells. Oncogene 2014; 34:1451-62. [DOI: 10.1038/onc.2014.36] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 12/31/2013] [Accepted: 01/06/2014] [Indexed: 12/14/2022]
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40
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Vu-Phan D, Koenig RJ. Genetics and epigenetics of sporadic thyroid cancer. Mol Cell Endocrinol 2014; 386:55-66. [PMID: 23933154 PMCID: PMC3867574 DOI: 10.1016/j.mce.2013.07.030] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 07/31/2013] [Accepted: 07/31/2013] [Indexed: 12/23/2022]
Abstract
Thyroid carcinoma is the most common endocrine malignancy, and although the disease generally has an excellent prognosis, therapeutic options are limited for patients not cured by surgery and radioiodine. Thyroid carcinomas commonly contain one of a small number of recurrent genetic mutations. The identification and study of these mutations has led to a deeper understanding of the pathophysiology of this disease and is providing new approaches to diagnosis and therapy. Papillary thyroid carcinomas usually contain an activating mutation in the RAS cascade, most commonly in BRAF and less commonly in RAS itself or through gene fusions that activate RET. A chromosomal translocation that results in production of a PAX8-PPARG fusion protein is found in follicular carcinomas. Anaplastic carcinomas may contain some of the above changes as well as additional mutations. Therapies that are targeted to these mutations are being used in patient care and clinical trials.
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Affiliation(s)
- Dang Vu-Phan
- Department of Internal Medicine, Division of Metabolism, Endocrinology and Diabetes, University of Michigan, Ann Arbor, MI, USA.
| | - Ronald J Koenig
- Department of Internal Medicine, Division of Metabolism, Endocrinology and Diabetes, University of Michigan, Ann Arbor, MI, USA.
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Potla U, Ni J, Vadaparampil J, Yang G, Leventhal JS, Campbell KN, Chuang PY, Morozov A, He JC, D'Agati VD, Klotman PE, Kaufman L. Podocyte-specific RAP1GAP expression contributes to focal segmental glomerulosclerosis-associated glomerular injury. J Clin Invest 2014; 124:1757-69. [PMID: 24642466 DOI: 10.1172/jci67846] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 01/16/2014] [Indexed: 01/17/2023] Open
Abstract
Injury to the specialized epithelial cells of the glomerulus (podocytes) underlies the pathogenesis of all forms of proteinuric kidney disease; however, the specific genetic changes that mediate podocyte dysfunction after injury are not fully understood. Here, we performed a large-scale insertional mutagenic screen of injury-resistant podocytes isolated from mice and found that increased expression of the gene Rap1gap, encoding a RAP1 activation inhibitor, ameliorated podocyte injury resistance. Furthermore, injured podocytes in murine models of disease and kidney biopsies from glomerulosclerosis patients exhibited increased RAP1GAP, resulting in diminished glomerular RAP1 activation. In mouse models, podocyte-specific inactivation of Rap1a and Rap1b induced massive glomerulosclerosis and premature death. Podocyte-specific Rap1a and Rap1b haploinsufficiency also resulted in severe podocyte damage, including features of podocyte detachment. Over-expression of RAP1GAP in cultured podocytes induced loss of activated β1 integrin, which was similarly observed in kidney biopsies from patients. Furthermore, preventing elevation of RAP1GAP levels in injured podocytes maintained β1 integrin-mediated adhesion and prevented cellular detachment. Taken together, our findings suggest that increased podocyte expression of RAP1GAP contributes directly to podocyte dysfunction by a mechanism that involves loss of RAP1-mediated activation of β1 integrin.
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Epigenetic Mechanism in Regulation of Endothelial Function by Disturbed Flow: Induction of DNA Hypermethylation by DNMT1. Cell Mol Bioeng 2014; 7:218-224. [PMID: 24883126 DOI: 10.1007/s12195-014-0325-z] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
There is increasing evidence that epigenetic mechanisms such as changes in DNA methylation and histone modification play an important role in regulating cellular functions in physiological and pathophysiological states. We investigated the effects of hemodynamic force disturbance, one of the risk factors for atherogenesis, on DNA methylation in HUVECs and rat carotid arteries. Our results demonstrated that athero-prone oscillatory shear flow (OS) without a clear direction induces DNA hypermethylation in comparison to the athero-protective pulsatile shear flow (PS) with a definite direction. Furthermore, OS increases the expression and nuclear translocation of DNA methyltransferase 1 (DNMT1), which is a major maintenance DNA methyltransferase that adds methyl groups to hemi-methylated DNA to repress gene expression. Pharmacological inhibition of DNMT1 by 5-Aza-2'-deoxycytidine abolished the OS-induced DNA hypermethylation. In vivo experiments also showed increases of DNMT1 expression and DNA methylation in the partially-ligated rat carotid arteries where the shear flow is disturbed. These in vitro and in vivo findings have provided novel evidence of the differential regulation of DNA methylation by different hemodynamic forces acting on vascular endothelium and identified DNMT1 as a key protein that governs the epigenetic changes in response to the pathophysiological stimuli due to disturbed flow.
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Brehar AC, Brehar FM, Bulgar AC, Dumitrache C. Genetic and epigenetic alterations in differentiated thyroid carcinoma. J Med Life 2013; 6:403-8. [PMID: 24868250 PMCID: PMC4034295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 09/19/2013] [Indexed: 10/28/2022] Open
Abstract
Differentiated thyroid carcinoma (DTC) has a favorable prognosis, but it is important to identify those patients who have a high risk of progressive disease and DTC-related death at the time of diagnosis. Analyzing genetic and epigenetic alterations in thyroid cancer may play a role in tumor diagnosis, prognostic and therapeutic strategies.
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Affiliation(s)
- AC Brehar
- “C.I. Parhon” National Institute of Endocrinology, Bucharest
| | - FM Brehar
- “Bagdasar Arseni” Emergency Hospital, Bucharest,”Carol Davila” University of Medicine and Pharmacy, Bucharest
| | - AC Bulgar
- “C.I. Parhon” National Institute of Endocrinology, Bucharest
| | - C Dumitrache
- “C.I. Parhon” National Institute of Endocrinology, Bucharest,”Carol Davila” University of Medicine and Pharmacy, Bucharest
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Kunstman JW, Korah R, Healy JM, Prasad M, Carling T. Quantitative assessment of RASSF1A methylation as a putative molecular marker in papillary thyroid carcinoma. Surgery 2013; 154:1255-61; discussion 1261-2. [DOI: 10.1016/j.surg.2013.06.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Tsygankova OM, Wang H, Meinkoth JL. Tumor cell migration and invasion are enhanced by depletion of Rap1 GTPase-activating protein (Rap1GAP). J Biol Chem 2013; 288:24636-46. [PMID: 23864657 DOI: 10.1074/jbc.m113.464594] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The functional significance of the widespread down-regulation of Rap1 GTPase-activating protein (Rap1GAP), a negative regulator of Rap activity, in human tumors is unknown. Here we show that human colon cancer cells depleted of Rap1GAP are endowed with more aggressive migratory and invasive properties. Silencing Rap1GAP enhanced the migration of confluent and single cells. In the latter, migration distance, velocity, and directionality were increased. Enhanced migration was a consequence of increased endogenous Rap activity as silencing Rap expression selectively abolished the migration of Rap1GAP-depleted cells. ROCK-mediated cell contractility was suppressed in Rap1GAP-depleted cells, which exhibited a spindle-shaped morphology and abundant membrane protrusions. Tumor cells can switch between Rho/ROCK-mediated contractility-based migration and Rac1-mediated mesenchymal motility. Strikingly, the migration of Rap1GAP-depleted, but not control cells required Rac1 activity, suggesting that loss of Rap1GAP alters migratory mechanisms. Inhibition of Rac1 activity restored membrane blebbing and increased ROCK activity in Rap1GAP-depleted cells, suggesting that Rac1 contributes to the suppression of contractility. Collectively, these findings identify Rap1GAP as a critical regulator of aggressive tumor cell behavior and suggest that the level of Rap1GAP expression influences the migratory mechanisms that are operative in tumor cells.
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Affiliation(s)
- Oxana M Tsygankova
- Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-6061, USA
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Rodríguez-Rodero S, Fernández AF, Fernández-Morera JL, Castro-Santos P, Bayon GF, Ferrero C, Urdinguio RG, Gonzalez-Marquez R, Suarez C, Fernández-Vega I, Fresno Forcelledo MF, Martínez-Camblor P, Mancikova V, Castelblanco E, Perez M, Marrón PI, Mendiola M, Hardisson D, Santisteban P, Riesco-Eizaguirre G, Matías-Guiu X, Carnero A, Robledo M, Delgado-Álvarez E, Menéndez-Torre E, Fraga MF. DNA methylation signatures identify biologically distinct thyroid cancer subtypes. J Clin Endocrinol Metab 2013; 98:2811-21. [PMID: 23666970 DOI: 10.1210/jc.2012-3566] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The purpose of this study was to determine the global patterns of aberrant DNA methylation in thyroid cancer. RESEARCH DESIGN AND METHODS We have used DNA methylation arrays to determine, for the first time, the genome-wide promoter methylation status of papillary, follicular, medullary, and anaplastic thyroid tumors. RESULTS We identified 262 and 352 hypermethylated and 13 and 21 hypomethylated genes in differentiated papillary and follicular tumors, respectively. Interestingly, the other tumor types analyzed displayed more hypomethylated genes (280 in anaplastic and 393 in medullary tumors) than aberrantly hypermethylated genes (86 in anaplastic and 131 in medullary tumors). Among the genes indentified, we show that 4 potential tumor suppressor genes (ADAMTS8, HOXB4, ZIC1, and KISS1R) and 4 potential oncogenes (INSL4, DPPA2, TCL1B, and NOTCH4) are frequently regulated by aberrant methylation in primary thyroid tumors. In addition, we show that aberrant promoter hypomethylation-associated overexpression of MAP17 might promote tumor growth in thyroid cancer. CONCLUSIONS Thyroid cancer subtypes present differential promoter methylation signatures, and nondifferentiated subtypes are characterized by aberrant promoter hypomethylation rather than hypermethylation. Additional studies are needed to determine the potential clinical interest of the tumor subtype-specific DNA methylation signatures described herein and the role of aberrant promoter hypomethylation in nondifferentiated thyroid tumors.
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MESH Headings
- Adenocarcinoma, Follicular/genetics
- Adenocarcinoma, Follicular/metabolism
- Adenocarcinoma, Follicular/pathology
- Carcinoma/genetics
- Carcinoma/metabolism
- Carcinoma/pathology
- Carcinoma, Medullary/genetics
- Carcinoma, Medullary/metabolism
- Carcinoma, Medullary/pathology
- Carcinoma, Neuroendocrine
- Carcinoma, Papillary/genetics
- Carcinoma, Papillary/metabolism
- Carcinoma, Papillary/pathology
- Cell Line, Tumor
- Cohort Studies
- DNA Methylation
- Down-Regulation
- Genome-Wide Association Study
- Humans
- Neoplasm Proteins/genetics
- Neoplasm Proteins/metabolism
- Oligonucleotide Array Sequence Analysis
- Promoter Regions, Genetic
- Thyroid Cancer, Papillary
- Thyroid Carcinoma, Anaplastic
- Thyroid Gland/metabolism
- Thyroid Gland/pathology
- Thyroid Neoplasms/genetics
- Thyroid Neoplasms/metabolism
- Thyroid Neoplasms/pathology
- Tissue Banks
- Tumor Cells, Cultured
- Up-Regulation
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Affiliation(s)
- Sandra Rodríguez-Rodero
- Department of Endocrinology and Nutrition, Instituto Universitario de Oncología del Principado de Asturias, Hospital Universitario Central de Asturias, 33006 Oviedo, Spain
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47
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Strong MJ, Xu G, Coco J, Baribault C, Vinay DS, Lacey MR, Strong AL, Lehman TA, Seddon MB, Lin Z, Concha M, Baddoo M, Ferris M, Swan KF, Sullivan DE, Burow ME, Taylor CM, Flemington EK. Differences in gastric carcinoma microenvironment stratify according to EBV infection intensity: implications for possible immune adjuvant therapy. PLoS Pathog 2013; 9:e1003341. [PMID: 23671415 PMCID: PMC3649992 DOI: 10.1371/journal.ppat.1003341] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Accepted: 03/20/2013] [Indexed: 12/13/2022] Open
Abstract
Epstein-Barr virus (EBV) is associated with roughly 10% of gastric carcinomas worldwide (EBVaGC). Although previous investigations provide a strong link between EBV and gastric carcinomas, these studies were performed using selected EBV gene probes. Using a cohort of gastric carcinoma RNA-seq data sets from The Cancer Genome Atlas (TCGA), we performed a quantitative and global assessment of EBV gene expression in gastric carcinomas and assessed EBV associated cellular pathway alterations. EBV transcripts were detected in 17% of samples but these samples varied significantly in EBV coverage depth. In four samples with the highest EBV coverage (hiEBVaGC – high EBV associated gastric carcinoma), transcripts from the BamHI A region comprised the majority of EBV reads. Expression of LMP2, and to a lesser extent, LMP1 were also observed as was evidence of abortive lytic replication. Analysis of cellular gene expression indicated significant immune cell infiltration and a predominant IFNG response in samples expressing high levels of EBV transcripts relative to samples expressing low or no EBV transcripts. Despite the apparent immune cell infiltration, high levels of the cytotoxic T-cell (CTL) and natural killer (NK) cell inhibitor, IDO1, was observed in the hiEBVaGCs samples suggesting an active tolerance inducing pathway in this subgroup. These results were confirmed in a separate cohort of 21 Vietnamese gastric carcinoma samples using qRT-PCR and on tissue samples using in situ hybridization and immunohistochemistry. Lastly, a panel of tumor suppressors and candidate oncogenes were expressed at lower levels in hiEBVaGC versus EBV-low and EBV-negative gastric cancers suggesting the direct regulation of tumor pathways by EBV. Epstein-Barr virus (EBV) is detected in roughly 10% of gastric carcinoma (GC) cases worldwide. Despite a strong link between EBV and gastric carcinoma, the contribution of EBV to the tumor environment in EBV associated gastric carcinoma is unclear. We performed a global assessment of EBV and host cell gene expression in gastric carcinoma tumors from 71 patients to link EBV genes (and expression intensities) to cell and microenvironmental changes. In addition to the finding that EBV is associated with down-regulated tumor regulatory genes, this study revealed that samples with high levels of EBV gene expression (hiEBVaGCs) displayed elevated immune cell infiltration with high interferon-gamma (IFNG) expression compared to samples with low or no EBV gene expression. Despite this evidence of increased immune posturing, hiEBVaGC samples also showed elevated expression of the potent immune cell inhibitor, IDO1. This finding may partly explain the persistence of these virus associated tumors in the face of local immune cell concentration. Importantly, the small molecule IDO inhibitor, 1MT (1-methyl Tryptophan), has been shown to reverse the tolerance inducing effects of IDO1 in other tumors. We propose that stratification of gastric carcinomas into EBV-negative, EBV-low and EBV-high may provide indicator value for the use of IDO1 inhibitors as adjuvant therapies against hiEBVaGCs.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Databases, Nucleic Acid
- Epstein-Barr Virus Infections/epidemiology
- Epstein-Barr Virus Infections/genetics
- Epstein-Barr Virus Infections/immunology
- Epstein-Barr Virus Infections/metabolism
- Epstein-Barr Virus Infections/pathology
- Epstein-Barr Virus Infections/therapy
- Female
- Gene Expression Regulation, Neoplastic/genetics
- Gene Expression Regulation, Neoplastic/immunology
- Gene Expression Regulation, Viral/genetics
- Gene Expression Regulation, Viral/immunology
- Herpesvirus 4, Human/genetics
- Herpesvirus 4, Human/immunology
- Herpesvirus 4, Human/metabolism
- Humans
- Immunotherapy
- Male
- Middle Aged
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- Neoplasm Proteins/immunology
- RNA, Neoplasm/biosynthesis
- RNA, Neoplasm/genetics
- RNA, Neoplasm/immunology
- RNA, Viral/biosynthesis
- RNA, Viral/genetics
- RNA, Viral/immunology
- Stomach Neoplasms/epidemiology
- Stomach Neoplasms/genetics
- Stomach Neoplasms/immunology
- Stomach Neoplasms/metabolism
- Stomach Neoplasms/pathology
- Stomach Neoplasms/therapy
- Tumor Microenvironment/genetics
- Tumor Microenvironment/immunology
- Viral Proteins/biosynthesis
- Viral Proteins/genetics
- Viral Proteins/immunology
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Affiliation(s)
- Michael J. Strong
- Department of Pathology, Tulane University, New Orleans, Louisiana, United States of America
- Tulane Cancer Center, New Orleans, Louisiana, United States of America
| | - Guorong Xu
- Department of Computer Science, University of New Orleans, New Orleans, Louisiana, United States of America
| | - Joseph Coco
- Department of Computer Science, University of New Orleans, New Orleans, Louisiana, United States of America
| | - Carl Baribault
- Tulane Cancer Center, New Orleans, Louisiana, United States of America
- Department of Mathematics, Tulane University, New Orleans, Louisiana, United States of America
| | - Dass S. Vinay
- Department of Medicine, Section of Clinical Immunology, Allergy, and Rheumatology, Tulane University, New Orleans, Louisiana, United States of America
| | - Michelle R. Lacey
- Tulane Cancer Center, New Orleans, Louisiana, United States of America
- Department of Mathematics, Tulane University, New Orleans, Louisiana, United States of America
| | - Amy L. Strong
- Tulane Center for Stem Cell Research and Regenerative Medicine, New Orleans, Louisiana, United States of America
| | - Teresa A. Lehman
- BioServe Biotechnologies, Ltd., Beltsville, Maryland, United States of America
| | - Michael B. Seddon
- BioServe Biotechnologies, Ltd., Beltsville, Maryland, United States of America
| | - Zhen Lin
- Department of Pathology, Tulane University, New Orleans, Louisiana, United States of America
- Tulane Cancer Center, New Orleans, Louisiana, United States of America
| | - Monica Concha
- Department of Pathology, Tulane University, New Orleans, Louisiana, United States of America
- Tulane Cancer Center, New Orleans, Louisiana, United States of America
| | - Melody Baddoo
- Department of Pathology, Tulane University, New Orleans, Louisiana, United States of America
- Tulane Cancer Center, New Orleans, Louisiana, United States of America
| | - MaryBeth Ferris
- Department of Microbiology & Immunology, Tulane University, New Orleans, Louisiana, United States of America
| | - Kenneth F. Swan
- Department of Obstetrics and Gynecology, Tulane University, New Orleans, Louisiana, United States of America
| | - Deborah E. Sullivan
- Department of Microbiology & Immunology, Tulane University, New Orleans, Louisiana, United States of America
| | - Matthew E. Burow
- Tulane Cancer Center, New Orleans, Louisiana, United States of America
- Department of Medicine, Section of Hematology and Medical Oncology, Tulane University, New Orleans, Louisiana, United States of America
| | - Christopher M. Taylor
- Department of Computer Science, University of New Orleans, New Orleans, Louisiana, United States of America
- Department of Microbiology, Immunology & Parasitology, Louisiana State University School of Medicine, New Orleans, Louisiana, United States of America
- Research Institute for Children, Children's Hospital, New Orleans, Louisiana, United States of America
- * E-mail: (CMT); (EKF)
| | - Erik K. Flemington
- Department of Pathology, Tulane University, New Orleans, Louisiana, United States of America
- Tulane Cancer Center, New Orleans, Louisiana, United States of America
- * E-mail: (CMT); (EKF)
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48
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Keller S, Angrisano T, Florio E, Pero R, Decaussin-Petrucci M, Troncone G, Capasso M, Lembo F, Fusco A, Chiariotti L. DNA methylation state of the galectin-3 gene represents a potential new marker of thyroid malignancy. Oncol Lett 2013; 6:86-90. [PMID: 23946782 PMCID: PMC3742793 DOI: 10.3892/ol.2013.1312] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Accepted: 01/22/2013] [Indexed: 12/18/2022] Open
Abstract
In order to supplement the cytopathological assessment of thyroid tumors, there is a need for new markers to correctly diagnose malignant thyroid lesions and avoid unnecessary and potentially harmful therapies for patients. The immunohistochemical expression of galectin-3 is currently considered to be the most accurate stand-alone marker for thyroid cancer diagnosis. The aim of this study was to establish whether the methylation state of the galectin-3 gene is a candidate molecular marker for thyroid malignancy. Thyroid specimens from 50 patients were analyzed, including 5 normal thyroid, 3 goiters, 39 papillary and 3 anaplastic thyroid carcinoma cases. High-resolution methylation analyses was performed to investigate the methylation state of a large genomic region (from −89 to +408) encompassing the galectin-3 transcriptional start site. Within this region, 5 CpG sites (nucleotide positions +134, +137, +142, +147 and +156) were observed to be differentially methylated among the samples and were further analyzed by the quantitative pyrosequencing technique. The hypomethylation of the +134, +137, +142, +147 and +156 CpG sites was observed to be markedly associated with cancer. Although the methylation degree of each single site was highly variable in non-neoplastic tissues, the average methylation state of the 5 CpG sites clearly distinguished cancer from the nonneoplastic thyroid tissues.
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Affiliation(s)
- Simona Keller
- Department of Cellular and Molecular Biology and Pathology, University of Naples, Institute of Experimental Endocrinology and Oncology CNR, Naples, Italy
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49
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Abstract
Recent molecular studies have described a number of abnormalities associated with the pathogenesis of thyroid carcinoma. These distinct molecular events are often associated with specific stages of tumor development and may serve as prognostic factors and therapeutic targets. A better understanding of the mechanisms involved in thyroid cancer pathogenesis, will hopefully help translate these discoveries to improved patient care.
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Affiliation(s)
- Kepal N Patel
- Thyroid Cancer Interdisciplinary Program, Division of Endocrine Surgery, NYU Langone Medical Center, New York, NY, USA.
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50
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Zhang CY, Zhang L, Yu HX, Bao JD, Lu RR. Curcumin inhibits the metastasis of K1 papillary thyroid cancer cells via modulating E-cadherin and matrix metalloproteinase-9 expression. Biotechnol Lett 2013; 35:995-1000. [PMID: 23474829 DOI: 10.1007/s10529-013-1173-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Accepted: 02/26/2013] [Indexed: 02/03/2023]
Abstract
The anti-metastatic effect of curcumin on papillary thyroid cancer K1 cells and its underlying mechanisms were investigated. Curcumin at 12.5, 25 and 50 μM promoted mesenchymal-epithelial transition and decreased the migration rate of K1 cells by 24-87%. Its mechanism may involve the up-regulation of E-cadherin expression levels and down-regulation of the activity and expression of matrix metalloproteinase-9.
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Affiliation(s)
- Chi-Yu Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
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