1
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Scianna M. Selected aspects of avascular tumor growth reproduced by a hybrid model of cell dynamics and chemical kinetics. Math Biosci 2024; 370:109168. [PMID: 38408698 DOI: 10.1016/j.mbs.2024.109168] [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: 09/04/2023] [Revised: 02/10/2024] [Accepted: 02/23/2024] [Indexed: 02/28/2024]
Abstract
We here propose a hybrid computational framework to reproduce and analyze aspects of the avascular progression of a generic solid tumor. Our method first employs an individual-based approach to represent the population of tumor cells, which are distinguished in viable and necrotic agents. The active part of the disease is in turn differentiated according to a set of metabolic states. We then describe the spatio-temporal evolution of the concentration of oxygen and of tumor-secreted proteolytic enzymes using partial differential equations (PDEs). A differential equation finally governs the local degradation of the extracellular matrix (ECM) by the malignant mass. Numerical realizations of the model are run to reproduce tumor growth and invasion in a number scenarios that differ for cell properties (adhesiveness, duplication potential, proteolytic activity) and/or environmental conditions (level of tissue oxygenation and matrix density pattern). In particular, our simulations suggest that tumor aggressiveness, in terms of invasive depth and extension of necrotic tissue, can be reduced by (i) stable cell-cell contact interactions, (ii) poor tendency of malignant agents to chemotactically move upon oxygen gradients, and (iii) presence of an overdense matrix, if coupled by a disrupted proteolytic activity of the disease.
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Affiliation(s)
- Marco Scianna
- Department of Mathematical Sciences, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
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2
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Zhao YX, Ma LB, Yang Z, Zhang TH, Wang Y, Xiang C. TET1 is a Diagnostic and Prognostic Biomarker Associated with Immune Infiltration in Papillary Thyroid Cancer. Biochem Genet 2024; 62:718-740. [PMID: 37410307 DOI: 10.1007/s10528-023-10442-5] [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: 07/11/2022] [Accepted: 06/24/2023] [Indexed: 07/07/2023]
Abstract
To investigate the function of ten-eleven translocation 1 (TET1) and its underlying mechanism in papillary thyroid cancer (PTC). Using the RNA-Seq data based on GDC TCGA, we analyzed the gene expression pattern of TET1 in PTC. Immunohistochemistry was carried out to assess the TET1 protein level. Then, its diagnostic and prognostic functions were determined by various bioinformatics approaches. Enrichment analysis was performed to explore the potential pathways in which TET1 is mainly involved. Finally, the immune cell infiltration analysis was conducted and the association of TET1 mRNA expression with the expression levels of immune checkpoints, tumor mutation burden (TMB) score, microsatellite instability (MSI) score, and cancer stem cells (CSC) score was examined. TET1 expression was lower in PTC tissues compared with that in normal tissues (P < 0.01). Besides, TET1 had a certain value in diagnosing PTC, and low-TET1 mRNA expression led to favorable disease-specific survival (DSS) (P < 0.01). The enrichment analysis revealed autoimmune thyroid disease and cytokine-cytokine receptor interaction were the consistent pathways in which TET1 participated. TET1 was negatively correlated with the Stromal score and Immune score. The different proportions of immune cell subtypes were observed between high- and low-TET1 expression groups. Interestingly, TET1 mRNA expression was inversely related to the expression levels of immune checkpoints, and TMB, MSI, and CSC scores. TET1 might be a robust diagnostic and prognostic biomarker for PTC. TET1 affected the DSS of PTC patients possibly through the regulation of immune-related pathways and tumor immunity.
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Affiliation(s)
- Yong-Xun Zhao
- The Seventh Department of General Surgery, The First Hospital of Lanzhou University, No. 1, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu, China.
| | - Li-Bin Ma
- The Seventh Department of General Surgery, The First Hospital of Lanzhou University, No. 1, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu, China
| | - Ze Yang
- The Seventh Department of General Surgery, The First Hospital of Lanzhou University, No. 1, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu, China
| | - Tao-Hua Zhang
- The Seventh Department of General Surgery, The First Hospital of Lanzhou University, No. 1, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu, China
| | - Yong Wang
- Department of Thyroid Surgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, No.88, Jiefang Road, Hangzhou, 310009, Zhejiang, China
| | - Cheng Xiang
- Department of Thyroid Surgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, No.88, Jiefang Road, Hangzhou, 310009, Zhejiang, China.
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3
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Zhang M, Wang Z, Wu Y, Chen M, Li J, Liu G. Hypoxia-induced factor-1α promotes radioresistance of esophageal cancer cells by transcriptionally activating LINC01116 and suppressing miR-3612 under hypoxia. J Biochem Mol Toxicol 2024; 38:e23551. [PMID: 37983895 DOI: 10.1002/jbt.23551] [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: 12/13/2022] [Revised: 08/02/2023] [Accepted: 09/27/2023] [Indexed: 11/22/2023]
Abstract
Esophageal cancer (EC) is a challenging tumor to treat with radiotherapy, often exhibiting resistance to this treatment modality. To explore the factors influencing radioresistance, we focused on the role of hypoxia-induced factor-1α (HIF-1α), and its interaction with the long noncoding RNA long intergenic nonprotein coding RNA 1116 (LINC01116). We analyzed the LINC01116 expression in EC and EC cell lines/human normal esophageal epithelial cell line (Het-1A). LINC01116 was silenced/overexpressed in EC109/KYSE30 cells under hypoxia, followed by radioresistance assessment. We measured HIF-1α levels in hypoxic EC cells and further validated the binding of HIF-1α with LINC01116, analyzing their interaction in EC cells. We then performed experiments in EC109 cells by transfection them with sh-HIF-1α/oe-LINC01116 to verify the effects. Additonally, we analyzed the localization of LINC01116 and its binding with miR-3612, followed by a combined experiment performed to validate the results. Our findings indicated that LINC01116 was highly expressed in EC and further elevated in hypoxic EC cells. LINC01116 was expressed at a high level in EC, which was further elevated in EC cells under hypoxic conditions. Knockdown of LINC01116 triggered EC cell apoptosis, thus suppressing radioresistance. Further investigation revealed that HIF-1α transcriptionally activated LINC01116 expression under hypoxia, and silencing HIF-1α lowered EC cell radioresistance by downregulating LINC01116. Under hypoxic conditions, LINC01116 could function as a sponge for miR-3612 and inhibit its expression. This interaction between LINC01116 and miR-3612 played a crucial role in mediating radioresistance in EC cells. Briefly, under hypoxic conditions, HIF-1α facilitates radioresistance of EC cells by transcriptionally activating LINC01116 expression and downregulating miR-3612.
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Affiliation(s)
- Mengyan Zhang
- Oncology Department, Guangzhou No.1 People's Hospital, Guangzhou City, Guangdong Province, P.R. China
- Thoracic Radiotherapy Department, Fujian Medical University Cancer Hospital Fujian Cancer Hospital, Fuzhou City, Fujian Province, P.R. China
| | - Zhiping Wang
- College of Clinical Medicine for Oncology, Fujian Medical University, Fuzhou City, Fujian Province, P.R. China
| | - Yahua Wu
- Thoracic Radiotherapy Department, Fujian Medical University Union Hospital, Fuzhou City, Fujian Province, P.R. China
| | - Mingqiu Chen
- College of Clinical Medicine for Oncology, Fujian Medical University, Fuzhou City, Fujian Province, P.R. China
| | - Jiancheng Li
- College of Clinical Medicine for Oncology, Fujian Medical University, Fuzhou City, Fujian Province, P.R. China
| | - Guolong Liu
- Oncology Department, Guangzhou No.1 People's Hospital, Guangzhou City, Guangdong Province, P.R. China
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4
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Zeng Z, Fu M, Hu Y, Wei Y, Wei X, Luo M. Regulation and signaling pathways in cancer stem cells: implications for targeted therapy for cancer. Mol Cancer 2023; 22:172. [PMID: 37853437 PMCID: PMC10583419 DOI: 10.1186/s12943-023-01877-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 10/05/2023] [Indexed: 10/20/2023] Open
Abstract
Cancer stem cells (CSCs), initially identified in leukemia in 1994, constitute a distinct subset of tumor cells characterized by surface markers such as CD133, CD44, and ALDH. Their behavior is regulated through a complex interplay of networks, including transcriptional, post-transcriptional, epigenetic, tumor microenvironment (TME), and epithelial-mesenchymal transition (EMT) factors. Numerous signaling pathways were found to be involved in the regulatory network of CSCs. The maintenance of CSC characteristics plays a pivotal role in driving CSC-associated tumor metastasis and conferring resistance to therapy. Consequently, CSCs have emerged as promising targets in cancer treatment. To date, researchers have developed several anticancer agents tailored to specifically target CSCs, with some of these treatment strategies currently undergoing preclinical or clinical trials. In this review, we outline the origin and biological characteristics of CSCs, explore the regulatory networks governing CSCs, discuss the signaling pathways implicated in these networks, and investigate the influential factors contributing to therapy resistance in CSCs. Finally, we offer insights into preclinical and clinical agents designed to eliminate CSCs.
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Affiliation(s)
- Zhen Zeng
- Laboratory of Aging Research and Cancer Agent Target, State Key Laboratory of Biotherapy, Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, P.R. China
| | - Minyang Fu
- Laboratory of Aging Research and Cancer Agent Target, State Key Laboratory of Biotherapy, Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, P.R. China
| | - Yuan Hu
- Department of Pediatric Nephrology Nursing, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, P.R. China
| | - Yuquan Wei
- Laboratory of Aging Research and Cancer Agent Target, State Key Laboratory of Biotherapy, Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, P.R. China
| | - Xiawei Wei
- Laboratory of Aging Research and Cancer Agent Target, State Key Laboratory of Biotherapy, Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, P.R. China
| | - Min Luo
- Laboratory of Aging Research and Cancer Agent Target, State Key Laboratory of Biotherapy, Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, P.R. China.
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5
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Bian Y, Yin G, Wang G, Liu T, Liang L, Yang X, Zhang W, Tang D. Degradation of HIF-1α induced by curcumol blocks glutaminolysis and inhibits epithelial-mesenchymal transition and invasion in colorectal cancer cells. Cell Biol Toxicol 2023; 39:1957-1978. [PMID: 35083610 DOI: 10.1007/s10565-021-09681-2] [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: 06/16/2021] [Accepted: 11/11/2021] [Indexed: 11/30/2022]
Abstract
Colorectal cancer (CRC) has high morbidity and mortality. Epithelial-mesenchymal transition (EMT) is associated with CRC progression and metastasis. Glutaminolysis is essential for malignancy of cancer cells. Here, we examined the effects of curcumol on CRC EMT. We observed that curcumol suppressed invasion and migration in human CRC cells associated with upregulation of epithelial markers E-cadherin and Zonula occludens 1 and downregulation of mesenchymal markers N-cadherin and Vimentin as well as EMT-related transcription factors Snail and Twist. Curcumol increased intracellular levels of glutamine but decreased intracellular levels of glutamate, α-ketoglutarate, ATP, glutathione, and tricarboxylic acid cycle metabolites, suggesting interruption of glutaminolysis. Next, curcumol repressed glutaminase 1 (Gls1) mRNA and protein expression, and overexpression of Gls1 promoted EMT and abolished curcumol effects on CRC cell EMT. Molecular examinations showed that curcumol stimulated protein degradation of hypoxia-inducible factor-1α (HIF-1α) and prevented its nuclear accumulation in CRC cells. HIF-1α agonist deferoxamine (DFO) promoted HIF-1α binding to Gls1 promoter and increased Gls1 expression but abolished curcumol's inhibitory effects on Gls1 expression. DFO also enhanced EMT and invasion and migration in CRC cells and eliminated curcumol effects. Furthermore, mouse CRC models were established with in vivo overexpression of HIF-1α and Gls1. Curcumol effectively inhibited CRC growth, metastasis, and EMT in mice, which was abrogated by overexpression of HIF-1α or Gls1. Altogether, stimulation of HIF-1α degradation was required for curcumol to disrupt EMT and repress invasion and migration in CRC cells through inhibiting Gls1-mediated glutaminolysis. Curcumol could be a promising candidate for intervention of CRC metastasis. • Curcumol inhibits EMT and blocks glutaminolysis in CRC cells. • Inhibition of Gls1 is required for curcumol blockade of glutaminolysis and EMT. • Curcumol induces HIF-1α degradation leading to inhibition of Gls1 and blockade of glutaminolysis and EMT. • Curcumol suppresses CRC growth and metastasis via inhibiting HIF-1α, glutaminolysis and EMT in mice.
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Affiliation(s)
- Yong Bian
- Laboratory Animal Center, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Gang Yin
- School of Traditional Chinese Medicine and School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Gang Wang
- Laboratory Animal Center, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Tiantian Liu
- School of Traditional Chinese Medicine and School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Li Liang
- School of Traditional Chinese Medicine and School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Xinyue Yang
- School of Traditional Chinese Medicine and School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Wen Zhang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 211166, China
| | - Decai Tang
- School of Traditional Chinese Medicine and School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
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Jung HS, Koo S, Won M, An S, Park H, Sessler JL, Han J, Kim JS. Cu(ii)-BODIPY photosensitizer for CAIX overexpressed cancer stem cell therapy. Chem Sci 2023; 14:1808-1819. [PMID: 36819853 PMCID: PMC9930985 DOI: 10.1039/d2sc03945a] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 01/14/2023] [Indexed: 01/21/2023] Open
Abstract
Chemoresistance originating from cancer stem cells (CSCs) is a major cause of cancer treatment failure and highlights the need to develop CSC-targeting therapies. Although enormous progress in both photodynamic therapy (PDT) and chemodynamic therapy (CDT) has been made in recent decades, the efficacy of these modalities against CSC remains limited. Here, we report a new generation photosensitizer, CA9-BPS-Cu(ii), a system that combines three subunits within a single molecule, namely a copper catalyst for CDT, a boron dipyrromethene photosensitizer for PDT, and acetazolamide for CSC targeting via carbonic anhydrase-9 (CA9) binding. A therapeutic effect in MDA-MB-231 cells was observed that is ascribed to elevated oxidative stress mediated by a combined CDT/PDT effect, as well as through copper-catalysed glutathione oxidation. The CSC targeting ability of CA9-BPS-Cu(ii) was evident from the enhanced affinity of CA9-BPS-Cu(ii) towards CD133-positive MDA-MB-231 cells where CA9 is overexpressed vs. CD133-negative cells. Moreover, the efficacy of CA9-BPS-Cu(ii) was successfully demonstrated in a xenograft mouse tumour model.
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Affiliation(s)
- Hyo Sung Jung
- Department of Biological Sciences, Hyupsung University Hwasung-si 18330 Korea
| | - Seyoung Koo
- Department of Chemistry, Korea University Seoul 02841 Korea
| | - Miae Won
- Department of Chemistry, Korea University Seoul 02841 Korea
| | - Seeun An
- Department of Biological Sciences, Hyupsung University Hwasung-si 18330 Korea
| | - Haebeen Park
- Department of Biological Sciences, Hyupsung University Hwasung-si 18330 Korea
| | - Jonathan L Sessler
- Department of Chemistry, The University of Texas at Austin Austin Texas 78712-1224 USA
| | - Jiyou Han
- Department of Biological Sciences, Hyupsung University Hwasung-si 18330 Korea
| | - Jong Seung Kim
- Department of Chemistry, Korea University Seoul 02841 Korea
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Mishra A, Pathak Y, Mishra SK, Prakash H, Tripathi V. Natural compounds as a potential modifier of stem cells renewal: Comparative analysis. Eur J Pharmacol 2022; 938:175412. [PMID: 36427534 DOI: 10.1016/j.ejphar.2022.175412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 11/09/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022]
Abstract
Cancer stem cells (CSCs) are indispensable for development, progression, drug resistance, and tumor metastasis. Current cancer-directed interventions target targeting rapidly dividing cancer cells and slow dividing CSCs, which are the root cause of cancer origin and recurrence. The most promising targets include several self-renewal pathways involved in the maintenance and renewal of CSCs, such as the Wnt/β-Catenin, Sonic Hedgehog, Notch, Hippo, Autophagy, and Ferroptosis. In view of safety, natural compounds are coming to the front line of treatment modalities for modifying various signaling pathways simultaneously involved in maintaining CSCs. Therefore, targeting CSCs with natural compounds is a promising approach to treating various types of cancers. In view of this, here we provide a comprehensive update on the current status of natural compounds that effectively tune key self-renewal pathways of CSCs. In addition, we highlighted surface expression markers in several types of cancer. We also emphasize how natural compounds target these self-renewal pathways to reduce therapy resistance and cancer recurrence properties of CSCs, hence providing valuable cancer therapeutic strategies. The inclusion of nutraceuticals is believed to enhance the therapeutic efficacy of current cancer-directed interventions significantly.
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Affiliation(s)
- Amaresh Mishra
- School of Biotechnology, Gautam Buddha University, Greater Noida, 201310, India
| | - Yamini Pathak
- School of Biotechnology, Gautam Buddha University, Greater Noida, 201310, India
| | | | - Hridayesh Prakash
- Amity Institute of Virology and Immunology, Amity University, Uttar Pradesh, India
| | - Vishwas Tripathi
- School of Biotechnology, Gautam Buddha University, Greater Noida, 201310, India.
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Liu P, Qin D, Deng Z, Tong X, Liu K, Fan W, Huang J, Zhou H, Gong W, Jin J, Lv H, Chen S, Tao Z, Xu Y. TET2 deficiency exacerbates nasal polypogenesis by inducing epithelial-to-mesenchymal transition. Allergy 2022; 77:3452-3455. [PMID: 35844041 DOI: 10.1111/all.15446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 07/09/2022] [Accepted: 07/13/2022] [Indexed: 01/28/2023]
Affiliation(s)
- Peiqiang Liu
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Danxue Qin
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhifeng Deng
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiaoting Tong
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Kunyu Liu
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wenjun Fan
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jingyu Huang
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Huiqin Zhou
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wanyang Gong
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jing Jin
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Hao Lv
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Siyuan Chen
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zezhang Tao
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China.,Research Institute of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yu Xu
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China.,Research Institute of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
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Urbanova M, Buocikova V, Trnkova L, Strapcova S, Kajabova VH, Melian EB, Novisedlakova M, Tomas M, Dubovan P, Earl J, Bizik J, Svastova E, Ciernikova S, Smolkova B. DNA Methylation Mediates EMT Gene Expression in Human Pancreatic Ductal Adenocarcinoma Cell Lines. Int J Mol Sci 2022; 23:2117. [PMID: 35216235 PMCID: PMC8879087 DOI: 10.3390/ijms23042117] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 01/31/2022] [Accepted: 02/10/2022] [Indexed: 12/14/2022] Open
Abstract
Due to abundant stroma and extracellular matrix, accompanied by lack of vascularization, pancreatic ductal adenocarcinoma (PDAC) is characterized by severe hypoxia. Epigenetic regulation is likely one of the mechanisms driving hypoxia-induced epithelial-to-mesenchymal transition (EMT), responsible for PDAC aggressiveness and dismal prognosis. To verify the role of DNA methylation in this process, we assessed gene expression and DNA methylation changes in four PDAC cell lines. BxPC-3, MIA PaCa-2, PANC-1, and SU.86.86 cells were exposed to conditioned media containing cytokines and inflammatory molecules in normoxic and hypoxic (1% O2) conditions for 2 and 6 days. Cancer Inflammation and Immunity Crosstalk and Human Epithelial to Mesenchymal Transition RT² Profiler PCR Arrays were used to identify top deregulated inflammatory and EMT-related genes. Their mRNA expression and DNA methylation were quantified by qRT-PCR and pyrosequencing. BxPC-3 and SU.86.86 cell lines were the most sensitive to hypoxia and inflammation. Although the methylation of gene promoters correlated with gene expression negatively, it was not significantly influenced by experimental conditions. However, DNA methyltransferase inhibitor decitabine efficiently decreased DNA methylation up to 53% and reactivated all silenced genes. These results confirm the role of DNA methylation in EMT-related gene regulation and uncover possible new targets involved in PDAC progression.
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Affiliation(s)
- Maria Urbanova
- Department of Molecular Oncology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (M.U.); (V.B.); (L.T.); (V.H.K.); (M.T.); (P.D.); (J.B.); (S.C.)
| | - Verona Buocikova
- Department of Molecular Oncology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (M.U.); (V.B.); (L.T.); (V.H.K.); (M.T.); (P.D.); (J.B.); (S.C.)
| | - Lenka Trnkova
- Department of Molecular Oncology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (M.U.); (V.B.); (L.T.); (V.H.K.); (M.T.); (P.D.); (J.B.); (S.C.)
| | - Sabina Strapcova
- Department of Tumor Biology, Institute of Virology, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (S.S.); (E.S.)
| | - Viera Horvathova Kajabova
- Department of Molecular Oncology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (M.U.); (V.B.); (L.T.); (V.H.K.); (M.T.); (P.D.); (J.B.); (S.C.)
| | - Emma Barreto Melian
- Molecular Epidemiology and Predictive Tumor Markers Group, Ramón y Cajal Health Research Institute (IRYCIS), Biomedical Research Network in Cancer (CIBERONC), Carretera Colmenar Km 9,100, 28034 Madrid, Spain; (E.B.M.); (J.E.)
| | - Maria Novisedlakova
- Oncology Outpatient Clinic, Hospital of the Hospitaller Order of Saint John of God, 814 65 Bratislava, Slovakia;
| | - Miroslav Tomas
- Department of Molecular Oncology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (M.U.); (V.B.); (L.T.); (V.H.K.); (M.T.); (P.D.); (J.B.); (S.C.)
- Department of Surgical Oncology, National Cancer Institute, Slovak Medical University, Klenova 1, 833 10 Bratislava, Slovakia
| | - Peter Dubovan
- Department of Molecular Oncology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (M.U.); (V.B.); (L.T.); (V.H.K.); (M.T.); (P.D.); (J.B.); (S.C.)
- Department of Surgical Oncology, National Cancer Institute, Slovak Medical University, Klenova 1, 833 10 Bratislava, Slovakia
| | - Julie Earl
- Molecular Epidemiology and Predictive Tumor Markers Group, Ramón y Cajal Health Research Institute (IRYCIS), Biomedical Research Network in Cancer (CIBERONC), Carretera Colmenar Km 9,100, 28034 Madrid, Spain; (E.B.M.); (J.E.)
| | - Jozef Bizik
- Department of Molecular Oncology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (M.U.); (V.B.); (L.T.); (V.H.K.); (M.T.); (P.D.); (J.B.); (S.C.)
| | - Eliska Svastova
- Department of Tumor Biology, Institute of Virology, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (S.S.); (E.S.)
| | - Sona Ciernikova
- Department of Molecular Oncology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (M.U.); (V.B.); (L.T.); (V.H.K.); (M.T.); (P.D.); (J.B.); (S.C.)
| | - Bozena Smolkova
- Department of Molecular Oncology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05 Bratislava, Slovakia; (M.U.); (V.B.); (L.T.); (V.H.K.); (M.T.); (P.D.); (J.B.); (S.C.)
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10
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Guz M, Jeleniewicz W, Malm A, Korona-Glowniak I. A Crosstalk between Diet, Microbiome and microRNA in Epigenetic Regulation of Colorectal Cancer. Nutrients 2021; 13:2428. [PMID: 34371938 PMCID: PMC8308570 DOI: 10.3390/nu13072428] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/09/2021] [Accepted: 07/13/2021] [Indexed: 02/07/2023] Open
Abstract
A still growing interest between human nutrition in relation to health and disease states can be observed. Dietary components shape the composition of microbiota colonizing our gastrointestinal tract which play a vital role in maintaining human health. There is a strong evidence that diet, gut microbiota and their metabolites significantly influence our epigenome, particularly through the modulation of microRNAs. These group of small non-coding RNAs maintain cellular homeostasis, however any changes leading to impaired expression of miRNAs contribute to the development of different pathologies, including neoplastic diseases. Imbalance of intestinal microbiota due to diet is primary associated with the development of colorectal cancer as well as other types of cancers. In the present work we summarize current knowledge with particular emphasis on diet-microbiota-miRNAs axis and its relation to the development of colorectal cancer.
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Affiliation(s)
- Małgorzata Guz
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Witold Jeleniewicz
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Anna Malm
- Department of Pharmaceutical Microbiology, Medical University of Lublin, 20-093 Lublin, Poland; (A.M.); (I.K.-G.)
| | - Izabela Korona-Glowniak
- Department of Pharmaceutical Microbiology, Medical University of Lublin, 20-093 Lublin, Poland; (A.M.); (I.K.-G.)
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11
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Wickramaratne N, Li R, Tian T, Khoraki J, Kang HS, Chmielewski C, Maitland J, Liebrecht LK, Fyffe-Freil R, Lindell SL, Mangino MJ. Cholangiocyte Epithelial to Mesenchymal Transition (EMT) is a potential molecular mechanism driving ischemic cholangiopathy in liver transplantation. PLoS One 2021; 16:e0246978. [PMID: 34234356 PMCID: PMC8263302 DOI: 10.1371/journal.pone.0246978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 06/22/2021] [Indexed: 11/19/2022] Open
Abstract
Donation after circulatory death (DCD) has expanded the donor pool for liver transplantation. However, ischemic cholangiopathy (IC) after DCD liver transplantation causes inferior outcomes. The molecular mechanisms of IC are currently unknown but may depend on ischemia-induced genetic reprograming of the biliary epithelium to mesenchymal-like cells. The main objective of this study was to determine if cholangiocytes undergo epithelial to mesenchymal transition (EMT) after exposure to DCD conditions and if this causally contributes to the phenotype of IC. Human cholangiocyte cultures were exposed to periods of warm and cold ischemia to mimic DCD liver donation. EMT was tested by assays of cell migration, cell morphology, and differential gene expression. Transplantation of syngeneic rat livers recovered under DCD conditions were evaluated for EMT changes by immunohistochemistry. Human cholangiocytes exposed to DCD conditions displayed migratory behavior and gene expression patterns consistent with EMT. E-cadherin and CK-7 expressions fell while N-cadherin, vimentin, TGFβ, and SNAIL rose, starting 24 hours and peaking 1-3 weeks after exposure. Cholangiocyte morphology changed from cuboidal (epithelial) before to spindle shaped (mesenchymal) a week after ischemia. These changes were blocked by pretreating cells with the Transforming Growth Factor beta (TGFβ) receptor antagonist Galunisertib (1 μM). Finally, rats with liver isografts cold stored for 20 hours in UW solution and exposed to warm ischemia (30 minutes) at recovery had elevated plasma bilirubin 1 week after transplantation and the liver tissue showed immunohistochemical evidence of early cholangiocyte EMT. Our findings show EMT occurs after exposure of human cholangiocytes to DCD conditions, which may be initiated by upstream signaling from autocrine derived TGFβ to cause mesenchymal specific morphological and migratory changes.
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Affiliation(s)
- Niluka Wickramaratne
- Department of Surgery, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Ru Li
- Department of Surgery, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Tao Tian
- Department of Surgery, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Jad Khoraki
- Department of Surgery, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Hae Sung Kang
- Department of Surgery, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Courtney Chmielewski
- Department of Physiology and Biophysics, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Jerry Maitland
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Loren K. Liebrecht
- Department of Surgery, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Ria Fyffe-Freil
- Department of Physiology and Biophysics, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Susanne Lyra Lindell
- Department of Surgery, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Martin J. Mangino
- Department of Surgery, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States of America
- Department of Physiology and Biophysics, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States of America
- Department of Emergency Medicine, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States of America
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12
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Kaleem M, Perwaiz M, Nur SM, Abdulrahman AO, Ahmad W, Al-Abbasi FA, Kumar V, Kamal MA, Anwar F. Epigenetics of Triple-negative breast cancer via natural compounds. Curr Med Chem 2021; 29:1436-1458. [PMID: 34238140 DOI: 10.2174/0929867328666210707165530] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 05/10/2021] [Accepted: 05/13/2021] [Indexed: 02/08/2023]
Abstract
Triple-negative breast cancer (TNBC) is a highly resistant, lethal, and metastatic sub-division of breast carcinoma, characterized by the deficiency of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2). In women, TNBC shows a higher aggressive behavior with poor patient prognosis and a higher recurrence rate during reproductive age. TNBC is defined by the presence of epithelial-to-mesenchymal-transition (EMT), which shows a significant role in cancer progression. At the epigenetic level, TNBC is characterized by epigenetic signatures, such as DNA methylation, histone remodeling, and a host of miRNA, MiR-193, LncRNA, HIF-2α, eEF2K, LIN9/NEK2, IMP3, LISCH7/TGF-β1, GD3s and KLK12 mediated regulation. These modifications either are silenced or activate the necessary genes that are prevalent in TNBC. The review is based on epigenetic mediated mechanistic changes in TNBC. Furthermore, Thymoquinone (TQ), Regorafenib, Fangjihuangqi decoction, Saikosaponin A, and Huaier, etc., are potent antitumor natural compounds extensively reported in the literature. Further, the review emphasizes the role of these natural compounds in TNBC and their possible epigenetic targets, which can be utilized as a potential therapeutic strategy in treatment of TNBC.
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Affiliation(s)
- Mohammed Kaleem
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Maryam Perwaiz
- Department of Sciences, University of Toronto. Mississauga. Canada
| | - Suza Mohammad Nur
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | | | - Wasim Ahmad
- Department of Kuliyate Tib, National Institute of Unani Medicine, Kottigepalya, Bengaluru, India
| | - Fahad A Al-Abbasi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Vikas Kumar
- Natural Product Discovery Laboratory, Department of Pharmaceutical Sciences, Shalom Institute of Health and Allied Sciences. SHUATS, Naini, Prayagraj, India
| | - Mohammad Amjad Kamal
- West China School of Nursing / Institutes for Systems Genetics, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Firoz Anwar
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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13
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Tampakis A, Weixler B, Rast S, Tampaki EC, Cremonesi E, Kancherla V, Tosti N, Kettelhack C, Ng CKY, Delko T, Soysal SD, von Holzen U, Felekouras E, Nikiteas N, Bolli M, Tornillo L, Terracciano L, Eppenberger-Castori S, Spagnoli GC, Piscuoglio S, von Flüe M, Däster S, Droeser RA. Nestin and CD34 expression in colorectal cancer predicts improved overall survival. Acta Oncol 2021; 60:727-734. [PMID: 33734917 DOI: 10.1080/0284186x.2021.1891280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Nestin, a class VI intermediate filament protein of the cytoskeleton, and CD34, a transmembrane phosphoglycoprotein, are markers of progenitor cells. This study aimed to evaluate their expression and clinical significance in colorectal cancer. METHODS A clinically annotated tissue microarray, including 599 patients with colorectal cancer, was analyzed by immunohistochemistry. Furthermore, nestin and CD34 correlations with HIF-1a and a panel of cytokines and chemokines were assessed using quantitative reverse transcription PCR and The Cancer Genome Atlas dataset. RESULTS Expression of nestin and CD34 was observed only in the tumor stroma. Patients displaying high expression of nestin and CD34 demonstrated higher rates of T1 and T2 tumors (p = .020), lower vascular invasion (p < .001) and improved 5-year overall survival (65%; 95% CI = 55-73 vs 45%; 95% CI = 37-53) after adjusting for clinicopathological characteristics (HR: 0.67; 95% CI = 0.46-0.96). A moderate to strong correlation (r = 0.37-0.78, p < .03) of nestin and CD34 was demonstrated for the following markers; HIF-1α, CD4, CD8, FOXP3, IRF1, GATA3, CCL2, CCL3, CXCL12 and CCL21. CONCLUSIONS Combined expression of nestin and CD34 expression is associated with better overall survival possibly by modulating a favorable immune response.
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Affiliation(s)
- Athanasios Tampakis
- Clarunis, University Centre for Gastrointestinal and Liver Disorders, Department of Visceral Surgery, University Hospital of Basel, Basel, Switzerland
| | - Benjamin Weixler
- Clarunis, University Centre for Gastrointestinal and Liver Disorders, Department of Visceral Surgery, University Hospital of Basel, Basel, Switzerland
- Department of Surgery, Charité University Hospital, Campus Benjamin Franklin, Berlin, Germany
| | - Silvan Rast
- Clarunis, University Centre for Gastrointestinal and Liver Disorders, Department of Visceral Surgery, University Hospital of Basel, Basel, Switzerland
| | - Ekaterini-Christina Tampaki
- National Organization for the Provision of Healthcare Services, Department of Planning and Monitoring of Medicines Dispencing, Medicines Division, Athens, Greece
- 2nd Department of Propedeutic Surgery, Athens University Medical School, Laiko General Hospital, Athens, Greece
| | | | | | - Nadia Tosti
- Clarunis, University Centre for Gastrointestinal and Liver Disorders, Department of Visceral Surgery, University Hospital of Basel, Basel, Switzerland
- Institute of Pathology, University Hospital Basel, Basel, Switzerland
| | - Christoph Kettelhack
- Clarunis, University Centre for Gastrointestinal and Liver Disorders, Department of Visceral Surgery, University Hospital of Basel, Basel, Switzerland
| | - Charlotte K. Y. Ng
- Department of Biomedical Research, University of Bern, Bern, Switzerland
| | - Tarik Delko
- Clarunis, University Centre for Gastrointestinal and Liver Disorders, Department of Visceral Surgery, University Hospital of Basel, Basel, Switzerland
| | - Savas D. Soysal
- Clarunis, University Centre for Gastrointestinal and Liver Disorders, Department of Visceral Surgery, University Hospital of Basel, Basel, Switzerland
| | - Urs von Holzen
- Indiana University School of Medicine South Bend, Goshen Center for Cancer Care, Goshen, IN, USA
- Harper Cancer Research Institute, South Bend, IN, USA
- School of Medicine, University of Basel, Basel, Switzerland
| | - Evangelos Felekouras
- 1st Department of Propedeutic Surgery, Athens University Medical School, Laiko General Hospital, Athens, Greece
| | - Nikolaos Nikiteas
- 2nd Department of Propedeutic Surgery, Athens University Medical School, Laiko General Hospital, Athens, Greece
| | - Martin Bolli
- Clarunis, University Centre for Gastrointestinal and Liver Disorders, Department of Visceral Surgery, University Hospital of Basel, Basel, Switzerland
| | - Luigi Tornillo
- Institute of Pathology, University Hospital Basel, Basel, Switzerland
| | - Luigi Terracciano
- Institute of Pathology, University Hospital Basel, Basel, Switzerland
| | | | | | - Salvatore Piscuoglio
- Institute of Pathology, University Hospital Basel, Basel, Switzerland
- Department of Biomedicine, Visceral Surgery Research Laboratory, Clarunis, Basel, Switzerland
| | - Markus von Flüe
- Clarunis, University Centre for Gastrointestinal and Liver Disorders, Department of Visceral Surgery, University Hospital of Basel, Basel, Switzerland
- Department of Biomedicine, Visceral Surgery Research Laboratory, Clarunis, Basel, Switzerland
| | - Silvio Däster
- Clarunis, University Centre for Gastrointestinal and Liver Disorders, Department of Visceral Surgery, University Hospital of Basel, Basel, Switzerland
| | - Raoul A. Droeser
- Clarunis, University Centre for Gastrointestinal and Liver Disorders, Department of Visceral Surgery, University Hospital of Basel, Basel, Switzerland
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14
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Ferrer AI, Trinidad JR, Sandiford O, Etchegaray JP, Rameshwar P. Epigenetic dynamics in cancer stem cell dormancy. Cancer Metastasis Rev 2021; 39:721-738. [PMID: 32394305 DOI: 10.1007/s10555-020-09882-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Cancer remains one of the most challenging diseases despite significant advances of early diagnosis and therapeutic treatments. Cancerous tumors are composed of various cell types including cancer stem cells capable of self-renewal, proliferation, differentiation, and invasion of distal tumor sites. Most notably, these cells can enter a dormant cellular state that is resistant to conventional therapies. Thereby, cancer stem cells have the intrinsic potential for tumor initiation, tumor growth, metastasis, and tumor relapse after therapy. Both genetic and epigenetic alterations are attributed to the formation of multiple tumor types. This review is focused on how epigenetic dynamics involving DNA methylation and DNA oxidations are implicated in breast cancer and glioblastoma multiforme. The emergence and progression of these cancer types rely on cancer stem cells with the capacity to enter quiescence also known as a dormant cellular state, which dictates the distinct tumorigenic aggressiveness between breast cancer and glioblastomas.
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Affiliation(s)
- Alejandra I Ferrer
- Department of Medicine, Rutgers New Jersey Medical School, Newark, NJ, 07103, USA
| | - Jonathan R Trinidad
- Department of Biological Sciences, Rutgers University, Newark, NJ, 07102, USA
| | - Oleta Sandiford
- Department of Medicine, Rutgers New Jersey Medical School, Newark, NJ, 07103, USA
| | | | - Pranela Rameshwar
- Department of Medicine, Rutgers New Jersey Medical School, Newark, NJ, 07103, USA.
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15
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Wei Z, Feng M, Wu Z, Shen S, Zhu D. Bcl9 Depletion Modulates Endothelial Cell in Tumor Immune Microenvironment in Colorectal Cancer Tumor. Front Oncol 2021; 10:603702. [PMID: 33552975 PMCID: PMC7856347 DOI: 10.3389/fonc.2020.603702] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 11/18/2020] [Indexed: 11/13/2022] Open
Abstract
Tumor endothelial cells are an important part of the tumor microenvironment, and angiogenesis inhibitory therapy has shown potential in tumor treatment. However, which subtypes of tumor endothelial cells are distributed in tumors, what are the differences between tumor endothelial cells and normal endothelial cells, and what is the mechanism of angiogenesis inhibitory therapy at the histological level, are all need to be resolved urgently. Using single-cell mRNA sequencing, we analyzed 12 CT26 colon cancer samples from mice, and found that knockdown of the downstream factor BCL9 in the Wnt signaling pathway or inhibitor-mediated functional inhibition can modulate tumor endothelial cells at a relatively primitive stage, inhibiting their differentiation into further extracellular matrix construction and angiogenesis functions. Furthermore, we propose a BCL9-endo-Score based on the differential expression of cells related to different states of BCL9 functions. Using published data sets with normal endothelial cells, we found that this score can characterize endothelial cells at different stages of differentiation. Finally, in the The Cancer Genome Atlas (TCGA) pan-cancer database, we found that BCL9-endo-Score can well predict the prognosis of diseases including colon cancer, kidney cancer and breast cancer, and identified the markers of these tumor subtypes, provide a basis for the prognosis prediction of patients with such types of tumor. Our data also contributed knowledge for tumor precision treatment with angiogenesis inhibitory therapy by targeting the Wnt signaling pathway.
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Affiliation(s)
- Zhuang Wei
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China.,Key Laboratory of Systems Biology, Innovation Center for Cell Signaling Network, CAS Center for Excellence in Molecular Cell Science, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Mei Feng
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Zhongen Wu
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Shuru Shen
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Di Zhu
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China.,Department of Pharmacology, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China.,Key Laboratory of Smart Drug Delivery, Ministry of Education, & State Key Laboratory of Molecular Engineering of Polymers, School of Pharmacy, Fudan University, Shanghai, China.,Shanghai Engineering Research Center of ImmunoTherapeutics, Fudan University, Shanghai, China.,Yangtze Delta Drug Advanced Research Institute, Nantong, China
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16
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Li T, Mao C, Wang X, Shi Y, Tao Y. Epigenetic crosstalk between hypoxia and tumor driven by HIF regulation. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2020; 39:224. [PMID: 33109235 PMCID: PMC7592369 DOI: 10.1186/s13046-020-01733-5] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023]
Abstract
Hypoxia is the major influence factor in physiological and pathological courses which are mainly mediated by hypoxia-inducible factors (HIFs) in response to low oxygen tensions within solid tumors. Under normoxia, HIF signaling pathway is inhibited due to HIF-α subunits degradation. However, in hypoxic conditions, HIF-α is activated and stabilized, and HIF target genes are successively activated, resulting in a series of tumour-specific activities. The activation of HIFs, including HIF-1α, HIF-2α and HIF-3α, subsequently induce downstream target genes which leads to series of responses, the resulting abnormal processes or metabolites in turn affect HIFs stability. Given its functions in tumors progression, HIFs have been regarded as therapeutic targets for improved treatment efficacy. Epigenetics refers to alterations in gene expression that are stable between cell divisions, and sometimes between generations, but do not involve changes in the underlying DNA sequence of the organism. And with the development of research, epigenetic regulation has been found to play an important role in the development of tumors, which providing accumulating basic or clinical evidences for tumor treatments. Here, given how little has been reported about the overall association between hypoxic tumors and epigenetics, we made a more systematic review from epigenetic perspective in hope of helping others better understand hypoxia or HIF pathway, and providing more established and potential therapeutic strategies in tumors to facilitate epigenetic studies of tumors.
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Affiliation(s)
- Tiansheng Li
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Chao Mao
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Xiang Wang
- Department of Thoracic Surgery, Second Xiangya Hospital, Central South University, Changsha, 410011, China
| | - Ying Shi
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China. .,Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China.
| | - Yongguang Tao
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China. .,Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China. .,Department of Thoracic Surgery, Second Xiangya Hospital, Central South University, Changsha, 410011, China.
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17
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Zuo X, Li L, Sun L. Plantamajoside inhibits hypoxia-induced migration and invasion of human cervical cancer cells through the NF-κB and PI3K/akt pathways. J Recept Signal Transduct Res 2020; 41:339-348. [PMID: 32865085 DOI: 10.1080/10799893.2020.1808679] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Plantamajoside (PMS) is a major compound of Plantago asiatica and possesses anti-tumor property in several types of cancers. However, the effect of PMS on cervical cancer has not been investigated. This study aimed to investigate the effect of PMS on the migration and invasion of cervical cancer cell lines under hypoxic condition. Our results demonstrated that PMS significantly inhibited hypoxia-caused increases in cell migration and invasion of cervical cancer cells. The hypoxia-induced epithelial-mesenchymal transition (EMT) process was prevented by PMS with increased E-cadherin expression, and decreased expression levels of N-cadherin and vimentin in cervical cancer cells. Besides, the expression levels of transcription factors slug and snail were suppressed by PMS in hypoxia-induced cervical cancer cells. The increased mRNA and protein levels of hypoxia-inducible factor 1alpha (HIF-1α) in hypoxia-induced cervical cancer cells were prevented by PMS. Furthermore, PMS blocked the hypoxia-induced activation of NF-κB and PI3K/Akt pathway in cervical cancer cells. Taken together, these findings suggest that PMS exerted an anti-tumor activity in cervical cancer through preventing the hypoxia-induced EMT. Thus, PMS might serve as a therapeutic agent for the treatment of cervical cancer.
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Affiliation(s)
- Xia Zuo
- Department Gynecology, Xi'an Fourth Hospital, Xi'an, China
| | - Liming Li
- Department of Disease Prevention and Control, Qingdao Special Service Men Recuperation Center of PLA Navy, Qingdao, China
| | - Ling Sun
- Department of Pharmacy, Lianyungang Oriental Hospital, Lianyungang, China
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18
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Clinicopathological correlation of PD-L1 and TET1 expression with tumor-infiltrating lymphocytes in non-small cell lung cancer. Pathol Res Pract 2020; 216:153188. [PMID: 32919305 DOI: 10.1016/j.prp.2020.153188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/31/2020] [Accepted: 08/01/2020] [Indexed: 11/22/2022]
Abstract
The immunohistochemical analysis of PD-L1 expression is still important in cancer immunotherapy. PD-L1 expression is affected by various tumor microenvironmental factors including tumor infiltrating lymphocytes (TILs) and DNA methylation biomarkers. Given the complex communication between tumor cells and immune cells, we analyzed the expression of PD-L1 and TET1 with TILs in human NSCLC and the correlation with various clinicopathological characteristics and patient prognosis. A total of 96 cases of NSCLC were enrolled in this study. Using tissue microarray, we performed immunohistochemical staining to analyze PD-L1 and TET1 expression. Image-Pro Plus was used as an automated imaging analysis software program to analyze the density of CD3+, CD4+ and CD8 + TILs. PD-L1 expression was positively correlated with the density of CD3+, CD4+ and CD8 + TILs (p = 0.038, p = 0.020, and p = 0.009, respectively); however, no significant relationship existed between TET1 expression and any TILs. The survival analysis revealed that a high PD-L1 expression was associated with favorable prognosis for OS (p = 0.049) and DFS (p = 0.029) in advanced-stage II-IV patients, but not in early stage I. Density of CD8+ TILs was an independent and favorable prognostic factor for DFS (p = 0.008) and OS (p = 0.002) in early-stage I patients. However, high TET-1 expression was associated with poor prognosis for OS (p = 0.029) in total NSCLC patients. These findings suggest the correlation and favorable prognostic impact of PD-L1 and TILs in NSCLC. In addition, DNA demethylase TET1 has oncogenic effects, showing association with poor prognosis.
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19
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Functional Link between miR-200a and ELK3 Regulates the Metastatic Nature of Breast Cancer. Cancers (Basel) 2020; 12:cancers12051225. [PMID: 32414208 PMCID: PMC7281469 DOI: 10.3390/cancers12051225] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/09/2020] [Accepted: 05/11/2020] [Indexed: 12/11/2022] Open
Abstract
Triple-negative breast cancer (TNBC) refers to breast cancer that does not have receptors for estrogen, progesterone, and HER2 protein. TNBC accounts for 10–20% of all cases of breast cancers and is characterized by its metastatic aggressiveness, poor prognosis, and limited treatment options. Here, we show that the metastatic nature of TNBC is critically regulated by a functional link between miR-200a and the transcription factor ELK3. We found that the expression levels of miR-200a and the ELK3 mRNA were negatively correlated in the luminal and TNBC subtypes of breast cancer cells. In vitro experiments revealed that miR-200a directly targets the 3’ untranslated region (UTR) of the ELK3 mRNA to destabilize the transcripts. Furthermore, ectopic expression of miR-200a impaired the migration and invasion of TNBC cells by reducing the expression level of the ELK3 mRNA. In in vivo studies, transfection of MDA-MB 231 cells (a claudin-low TNBC cell type) with exogenous miR-200a reduced their extravasation into the lung during 48 h after tail vein injection, and co-transfection of the cells with an expression plasmid harboring ELK3 that lacked an intact 3’UTR recovered their extravasation ability. Overall, our findings provide evidences that miR-200a and ELK3 is functionally linked to regulate invasive characteristics of breast cancers.
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20
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Yang L, Shi P, Zhao G, Xu J, Peng W, Zhang J, Zhang G, Wang X, Dong Z, Chen F, Cui H. Targeting cancer stem cell pathways for cancer therapy. Signal Transduct Target Ther 2020; 5:8. [PMID: 32296030 PMCID: PMC7005297 DOI: 10.1038/s41392-020-0110-5] [Citation(s) in RCA: 886] [Impact Index Per Article: 221.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 12/15/2019] [Accepted: 12/19/2019] [Indexed: 12/18/2022] Open
Abstract
Since cancer stem cells (CSCs) were first identified in leukemia in 1994, they have been considered promising therapeutic targets for cancer therapy. These cells have self-renewal capacity and differentiation potential and contribute to multiple tumor malignancies, such as recurrence, metastasis, heterogeneity, multidrug resistance, and radiation resistance. The biological activities of CSCs are regulated by several pluripotent transcription factors, such as OCT4, Sox2, Nanog, KLF4, and MYC. In addition, many intracellular signaling pathways, such as Wnt, NF-κB (nuclear factor-κB), Notch, Hedgehog, JAK-STAT (Janus kinase/signal transducers and activators of transcription), PI3K/AKT/mTOR (phosphoinositide 3-kinase/AKT/mammalian target of rapamycin), TGF (transforming growth factor)/SMAD, and PPAR (peroxisome proliferator-activated receptor), as well as extracellular factors, such as vascular niches, hypoxia, tumor-associated macrophages, cancer-associated fibroblasts, cancer-associated mesenchymal stem cells, extracellular matrix, and exosomes, have been shown to be very important regulators of CSCs. Molecules, vaccines, antibodies, and CAR-T (chimeric antigen receptor T cell) cells have been developed to specifically target CSCs, and some of these factors are already undergoing clinical trials. This review summarizes the characterization and identification of CSCs, depicts major factors and pathways that regulate CSC development, and discusses potential targeted therapy for CSCs.
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Affiliation(s)
- Liqun Yang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 400716, Chongqing, China
- Cancer Center, Medical Research Institute, Southwest University, 400716, Chongqing, China
| | - Pengfei Shi
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 400716, Chongqing, China
- Cancer Center, Medical Research Institute, Southwest University, 400716, Chongqing, China
| | - Gaichao Zhao
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 400716, Chongqing, China
- Cancer Center, Medical Research Institute, Southwest University, 400716, Chongqing, China
| | - Jie Xu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 400716, Chongqing, China
- Cancer Center, Medical Research Institute, Southwest University, 400716, Chongqing, China
| | - Wen Peng
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 400716, Chongqing, China
- Cancer Center, Medical Research Institute, Southwest University, 400716, Chongqing, China
| | - Jiayi Zhang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 400716, Chongqing, China
- Cancer Center, Medical Research Institute, Southwest University, 400716, Chongqing, China
| | - Guanghui Zhang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 400716, Chongqing, China
- Cancer Center, Medical Research Institute, Southwest University, 400716, Chongqing, China
| | - Xiaowen Wang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 400716, Chongqing, China
- Cancer Center, Medical Research Institute, Southwest University, 400716, Chongqing, China
| | - Zhen Dong
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 400716, Chongqing, China
- Cancer Center, Medical Research Institute, Southwest University, 400716, Chongqing, China
| | - Fei Chen
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, 48201, USA
| | - Hongjuan Cui
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 400716, Chongqing, China.
- Cancer Center, Medical Research Institute, Southwest University, 400716, Chongqing, China.
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21
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The role of DUBs in the post-translational control of cell migration. Essays Biochem 2019; 63:579-594. [DOI: 10.1042/ebc20190022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 09/30/2019] [Accepted: 10/01/2019] [Indexed: 12/26/2022]
Abstract
AbstractCell migration is a multifactorial/multistep process that requires the concerted action of growth and transcriptional factors, motor proteins, extracellular matrix remodeling and proteases. In this review, we focus on the role of transcription factors modulating Epithelial-to-Mesenchymal Transition (EMT-TFs), a fundamental process supporting both physiological and pathological cell migration. These EMT-TFs (Snail1/2, Twist1/2 and Zeb1/2) are labile proteins which should be stabilized to initiate EMT and provide full migratory and invasive properties. We present here a family of enzymes, the deubiquitinases (DUBs) which have a crucial role in counteracting polyubiquitination and proteasomal degradation of EMT-TFs after their induction by TGFβ, inflammatory cytokines and hypoxia. We also describe the DUBs promoting the stabilization of Smads, TGFβ receptors and other key proteins involved in transduction pathways controlling EMT.
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Zhong W, Yang W, Qin Y, Gu W, Xue Y, Tang Y, Xu H, Wang H, Zhang C, Wang C, Sun B, Liu Y, Liu H, Zhou H, Chen S, Sun T, Yang C. 6-Gingerol stabilized the p-VEGFR2/VE-cadherin/β-catenin/actin complex promotes microvessel normalization and suppresses tumor progression. J Exp Clin Cancer Res 2019; 38:285. [PMID: 31266540 PMCID: PMC6604152 DOI: 10.1186/s13046-019-1291-z] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Accepted: 06/25/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Anti-angiogenic therapies demonstrate anti-tumor effects by decreasing blood supply to tumors and inhibiting tumor growth. However, anti-angiogenic therapy may leads to changes in tumor microenvironment and increased invasiveness of tumor cells, which in turn promotes distant metastasis and increased drug resistance. METHODS The CO-IP assays, N-STORM and cytoskeleton analysis were used to confirm the mechanism that p-VEGFR2/VE-cadherin/β-catenin/actin complex regulates vascular remodeling and improves the tumor microenvironment. 6-gingerol (6G), the major bioactive component in ginger, stabilized this complex by enhancing the binding of VEGFa to VEGFR2 with non-pathway dependent. Biacore, pull down and molecular docking were employed to confirm the interaction between 6G and VEGFR2 and enhancement of VEGFa binding to VEGFR2. RESULTS Here, we report that microvascular structural entropy (MSE) may be a prognostic factor in several tumor types and have potential as a biomarker in the clinic. 6G regulates the structural organization of the microvascular bed to decrease MSE via the p-VEGFR2/VE-cadherin/β-catenin/actin complex and inhibit tumor progression. 6G promotes the normalization of tumor vessels, improves the tumor microenvironment and decreases MSE, facilitating the delivery of chemotherapeutic agents into the tumor core and thereby reducing tumor growth and metastasis. CONCLUSIONS This study demonstrated the importance of vascular normalization in tumor therapy and elucidated the mechanism of action of ginger, a medicinal compound that has been used in China since ancient times.
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Affiliation(s)
- Weilong Zhong
- Department of Gastroenterology and Hepatology, Tianjin Institute of Digestive Disease, Tianjin Medical University General Hospital, Tianjin, 300041 China
| | - Wendong Yang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350 China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300450 China
| | - Yuan Qin
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350 China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300450 China
| | - Wenguang Gu
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350 China
| | - Yinyin Xue
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350 China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300450 China
| | - Yuanhao Tang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350 China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300450 China
| | - Hengwei Xu
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350 China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300450 China
| | - Hongzhi Wang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350 China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300450 China
| | - Chao Zhang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350 China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300450 China
| | - Changhua Wang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350 China
| | - Bo Sun
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300450 China
| | - Yanrong Liu
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300450 China
| | - Huijuan Liu
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350 China
| | - Honggang Zhou
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350 China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300450 China
| | - Shuang Chen
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300450 China
| | - Tao Sun
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350 China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300450 China
| | - Cheng Yang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350 China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300450 China
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Singh M, Tian XJ, Donnenberg VS, Watson AM, Zhang J, Stabile LP, Watkins SC, Xing J, Sant S. Targeting the Temporal Dynamics of Hypoxia-Induced Tumor-Secreted Factors Halts Tumor Migration. Cancer Res 2019; 79:2962-2977. [PMID: 30952634 PMCID: PMC6548579 DOI: 10.1158/0008-5472.can-18-3151] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 02/01/2019] [Accepted: 03/29/2019] [Indexed: 12/17/2022]
Abstract
Targeting microenvironmental factors that foster migratory cell phenotypes is a promising strategy for halting tumor migration. However, lack of mechanistic understanding of the emergence of migratory phenotypes impedes pharmaceutical drug development. Using our three-dimensional microtumor model with tight control over tumor size, we recapitulated the tumor size-induced hypoxic microenvironment and emergence of migratory phenotypes in microtumors from epithelial breast cells and patient-derived primary metastatic breast cancer cells, mesothelioma cells, and lung cancer xenograft cells. The microtumor models from various patient-derived tumor cells and patient-derived xenograft cells revealed upregulation of tumor-secreted factors, including matrix metalloproteinase-9 (MMP9), fibronectin (FN), and soluble E-cadherin, consistent with clinically reported elevated levels of FN and MMP9 in patient breast tumors compared with healthy mammary glands. Secreted factors in the conditioned media of large microtumors induced a migratory phenotype in nonhypoxic, nonmigratory small microtumors. Subsequent mathematical analyses identified a two-stage microtumor progression and migration mechanism whereby hypoxia induces a migratory phenotype in the initialization stage, which then becomes self-sustained through a positive feedback loop established among the tumor-secreted factors. Computational and experimental studies showed that inhibition of tumor-secreted factors effectively halts microtumor migration despite tumor-to-tumor variation in migration kinetics, while inhibition of hypoxia is effective only within a time window and is compromised by tumor-to-tumor variation, supporting our notion that hypoxia initiates migratory phenotypes but does not sustain it. In summary, we show that targeting temporal dynamics of evolving microenvironments, especially tumor-secreted factors during tumor progression, can halt tumor migration. SIGNIFICANCE: This study uses state-of-the-art three-dimensional microtumor models and computational approaches to highlight the temporal dynamics of tumor-secreted microenvironmental factors in inducing tumor migration.
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Affiliation(s)
- Manjulata Singh
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Xiao-Jun Tian
- Department of Computational and Systems Biology, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, Arizona
| | - Vera S Donnenberg
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, Pennsylvania
- Department of Cardiothoracic Surgery, University of Pittsburgh School of Medicine, McGowan Institute for Regenerative Medicine, and UPMC-Hillman Cancer Center, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Alan M Watson
- Center for Biologic Imaging, Center for Vaccine Research, and Department of Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - JingYu Zhang
- Department of Computational and Systems Biology, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Laura P Stabile
- Department of Pharmacology & Chemical Biology, UPMC-Hillman Cancer Center, Pittsburgh, Pennsylvania
| | - Simon C Watkins
- Center for Biologic Imaging and the Department of Cellular Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Jianhua Xing
- Department of Computational and Systems Biology, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
- UPMC-Hillman Cancer Center, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Shilpa Sant
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, Pennsylvania.
- UPMC-Hillman Cancer Center, University of Pittsburgh, Pittsburgh, Pennsylvania
- Department of Bioengineering, Swanson School of Engineering, and McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
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Lamadema N, Burr S, Brewer AC. Dynamic regulation of epigenetic demethylation by oxygen availability and cellular redox. Free Radic Biol Med 2019; 131:282-298. [PMID: 30572012 DOI: 10.1016/j.freeradbiomed.2018.12.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 12/04/2018] [Accepted: 12/10/2018] [Indexed: 02/07/2023]
Abstract
The chromatin structure of the mammalian genome must facilitate both precisely-controlled DNA replication together with tightly-regulated gene transcription. This necessarily involves complex mechanisms and processes which remain poorly understood. It has long been recognised that the epigenetic landscape becomes established during embryonic development and acts to specify and determine cell fate. In addition, the chromatin structure is highly dynamic and allows for both cellular reprogramming and homeostatic modulation of cell function. In this respect, the functions of epigenetic "erasers", which act to remove covalently-linked epigenetic modifications from DNA and histones are critical. The enzymatic activities of the TET and JmjC protein families have been identified as demethylases which act to remove methyl groups from DNA and histones, respectively. Further, they are characterised as members of the Fe(II)- and 2-oxoglutarate-dependent dioxygenase superfamily. This provides the intriguing possibility that their enzymatic activities may be modulated by cellular metabolism, oxygen availability and redox-based mechanisms, all of which are likely to display dynamic cell- and tissue-specific patterns of flux. Here we discuss the current evidence for such [O2]- and redox-dependent regulation of the TET and Jmjc demethylases and the potential physiological and pathophysiological functional consequences of such regulation.
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Affiliation(s)
- Nermina Lamadema
- School of Cardiovascular Medicine & Sciences, King's College London BHF Centre of Research Excellence, United Kingdom
| | - Simon Burr
- School of Cardiovascular Medicine & Sciences, King's College London BHF Centre of Research Excellence, United Kingdom
| | - Alison C Brewer
- School of Cardiovascular Medicine & Sciences, King's College London BHF Centre of Research Excellence, United Kingdom.
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Siregar P, Julen N, Hufnagl P, Mutter GL. Computational morphogenesis – Embryogenesis, cancer research and digital pathology. Biosystems 2018; 169-170:40-54. [DOI: 10.1016/j.biosystems.2018.05.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 05/25/2018] [Indexed: 01/14/2023]
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Chen F, Zhang Y, Gibbons DL, Deneen B, Kwiatkowski DJ, Ittmann M, Creighton CJ. Pan-Cancer Molecular Classes Transcending Tumor Lineage Across 32 Cancer Types, Multiple Data Platforms, and over 10,000 Cases. Clin Cancer Res 2018; 24:2182-2193. [PMID: 29440175 PMCID: PMC5932236 DOI: 10.1158/1078-0432.ccr-17-3378] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 01/08/2018] [Accepted: 02/02/2018] [Indexed: 01/03/2023]
Abstract
Purpose: The Cancer Genome Atlas data resources represent an opportunity to explore commonalities across cancer types involving multiple molecular levels, but tumor lineage and histology can represent a barrier in moving beyond differences related to cancer type.Experimental Design: On the basis of gene expression data, we classified 10,224 cancers, representing 32 major types, into 10 molecular-based "classes." Molecular patterns representing tissue or histologic dominant effects were first removed computationally, with the resulting classes representing emergent themes across tumor lineages.Results: Key differences involving mRNAs, miRNAs, proteins, and DNA methylation underscored the pan-cancer classes. One class expressing neuroendocrine and cancer-testis antigen markers represented ∼4% of cancers surveyed. Basal-like breast cancers segregated into an exclusive class, distinct from all other cancers. Immune checkpoint pathway markers and molecular signatures of immune infiltrates were most strongly manifested within a class representing ∼13% of cancers. Pathway-level differences involving hypoxia, NRF2-ARE, Wnt, and Notch were manifested in two additional classes enriched for mesenchymal markers and miR200 silencing.Conclusions: All pan-cancer molecular classes uncovered here, with the important exception of the basal-like breast cancer class, involve a wide range of cancer types and would facilitate understanding the molecular underpinnings of cancers beyond tissue-oriented domains. Numerous biological processes associated with cancer in the laboratory setting were found here to be coordinately manifested across large subsets of human cancers. The number of cancers manifesting features of neuroendocrine tumors may be much higher than previously thought, which disease is known to occur in many different tissues. Clin Cancer Res; 24(9); 2182-93. ©2018 AACR.
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Affiliation(s)
- Fengju Chen
- Dan L. Duncan Comprehensive Cancer Center Division of Biostatistics, Baylor College of Medicine, Houston, Texas
| | - Yiqun Zhang
- Dan L. Duncan Comprehensive Cancer Center Division of Biostatistics, Baylor College of Medicine, Houston, Texas
| | - Don L Gibbons
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Benjamin Deneen
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, Texas
- Department of Neuroscience, Baylor College of Medicine, Houston, Texas
- Neurological Research Institute at Texas' Children's Hospital, Baylor College of Medicine, Houston, Texas
- Program in Developmental Biology, Baylor College of Medicine, Houston, Texas
| | - David J Kwiatkowski
- The Eli and Edythe L. Broad Institute of Massachusetts Institute of Technology and Harvard University, Cambridge, Massachusetts
- Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Michael Ittmann
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas
| | - Chad J Creighton
- Dan L. Duncan Comprehensive Cancer Center Division of Biostatistics, Baylor College of Medicine, Houston, Texas.
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas
- Department of Medicine, Baylor College of Medicine, Houston, Texas
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Zhang J, Wang Y, Jiang X, Chan HC. Cystic fibrosis transmembrane conductance regulator-emerging regulator of cancer. Cell Mol Life Sci 2018; 75:1737-1756. [PMID: 29411041 PMCID: PMC11105598 DOI: 10.1007/s00018-018-2755-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/27/2017] [Accepted: 01/17/2018] [Indexed: 12/11/2022]
Abstract
Mutations of cystic fibrosis transmembrane conductance regulator (CFTR) cause cystic fibrosis, the most common life-limiting recessive genetic disease among Caucasians. CFTR mutations have also been linked to increased risk of various cancers but remained controversial for a long time. Recent studies have begun to reveal that CFTR is not merely an ion channel but also an important regulator of cancer development and progression with multiple signaling pathways identified. In this review, we will first present clinical findings showing the correlation of genetic mutations or aberrant expression of CFTR with cancer incidence in multiple cancers. We will then focus on the roles of CFTR in fundamental cellular processes including transformation, survival, proliferation, migration, invasion and epithelial-mesenchymal transition in cancer cells, highlighting the signaling pathways involved. Finally, the association of CFTR expression levels with patient prognosis, and the potential of CFTR as a cancer prognosis indicator in human malignancies will be discussed.
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Affiliation(s)
- Jieting Zhang
- Faculty of Medicine, Epithelial Cell Biology Research Center, School of Biomedical Sciences, The Chinese University of Hong Kong, Sha Tin, Hong Kong SAR, People's Republic of China
- Key Laboratory for Regenerative Medicine of the Ministry of Education of China, Faculty of Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, Sha Tin, Hong Kong SAR, People's Republic of China
- School of Biomedical Sciences Core Laboratory, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, People's Republic of China
| | - Yan Wang
- Faculty of Medicine, Epithelial Cell Biology Research Center, School of Biomedical Sciences, The Chinese University of Hong Kong, Sha Tin, Hong Kong SAR, People's Republic of China
- Key Laboratory for Regenerative Medicine of the Ministry of Education of China, Faculty of Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, Sha Tin, Hong Kong SAR, People's Republic of China
- School of Biomedical Sciences Core Laboratory, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, People's Republic of China
| | - Xiaohua Jiang
- Faculty of Medicine, Epithelial Cell Biology Research Center, School of Biomedical Sciences, The Chinese University of Hong Kong, Sha Tin, Hong Kong SAR, People's Republic of China.
- Key Laboratory for Regenerative Medicine of the Ministry of Education of China, Faculty of Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, Sha Tin, Hong Kong SAR, People's Republic of China.
- School of Biomedical Sciences Core Laboratory, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, People's Republic of China.
| | - Hsiao Chang Chan
- Faculty of Medicine, Epithelial Cell Biology Research Center, School of Biomedical Sciences, The Chinese University of Hong Kong, Sha Tin, Hong Kong SAR, People's Republic of China.
- Key Laboratory for Regenerative Medicine of the Ministry of Education of China, Faculty of Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, Sha Tin, Hong Kong SAR, People's Republic of China.
- School of Biomedical Sciences Core Laboratory, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, People's Republic of China.
- Sichuan University-The Chinese University of Hong Kong Joint Laboratory for Reproductive Medicine, West China Second University Hospital, Chengdu, People's Republic of China.
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Abdulkareem AA, Shelton RM, Landini G, Cooper PR, Milward MR. Potential role of periodontal pathogens in compromising epithelial barrier function by inducing epithelial-mesenchymal transition. J Periodontal Res 2018; 53:565-574. [PMID: 29704258 DOI: 10.1111/jre.12546] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND OBJECTIVE Epithelial-mesenchymal transition (EMT) is a process by which epithelial cells acquire a mesenchymal-like phenotype and this may be induced by exposure to gram-negative bacteria. It has been proposed that EMT is responsible for compromising epithelial barrier function in the pathogenesis of several diseases. However, the possible role of EMT in the pathogenesis of periodontitis has not previously been investigated. The aim of this study therefore was to investigate whether gram-negative, anaerobic periodontal pathogens could trigger EMT in primary oral keratinocytes in vitro. MATERIAL AND METHODS Primary oral keratinocytes were harvested from labial mandibular mucosa of Wistar Han rats. Cells were exposed to heat-killed Fusobacterium nucleatum and Porphyromonas gingivalis (100 bacteria/epithelial cell) and to 20 μg/mL of Escherichia coli lipopolysaccharide over an 8-day period. Exposure to bacteria did not significantly change epithelial cell number or vitality in comparison with unstimulated controls at the majority of time-points examined. Expression of EMT marker genes was determined by semiquantitative RT-PCR at 1, 5, and 8 days following stimulation. The expression of EMT markers was also assessed by immunofluorescence (E-cadherin and vimentin) and using immunocytochemistry to determine Snail activation. The loss of epithelial monolayer coherence, in response to bacterial challenge, was determined by measuring trans-epithelial electrical resistance. The induction of a migratory phenotype was investigated using scratch-wound and transwell migration assays. RESULTS Exposure of primary epithelial cell cultures to periodontal pathogens was associated with a significant decrease in transcription (~3-fold) of E-cadherin and the upregulation of N-cadherin, vimentin, Snail, matrix metalloproteinase-2 (~3-5 fold) and toll-like receptor 4. Bacterial stimulation (for 8 days) also resulted in an increased percentage of vimentin-positive cells (an increase of 20% after stimulation with P. gingivalis and an increase of 30% after stimulation with F. nucleatum, compared with controls). Furthermore, periodontal pathogens significantly increased the activation of Snail (60%) and cultures exhibited a decrease in electrical impedance (P < .001) in comparison with unexposed controls. The migratory ability of the cells increased significantly in response to bacterial stimulation, as shown by both the number of migrated cells and scratch-wound closure rates. CONCLUSION Prolonged exposure of primary rat oral keratinocyte cultures to periodontal pathogens generated EMT-like features, which introduces the possibility that this process may be involved in loss of epithelial integrity during periodontitis.
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Affiliation(s)
- A A Abdulkareem
- Department of Periodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - R M Shelton
- Biomaterials, School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, The University of Birmingham, Birmingham, UK
| | - G Landini
- Oral Pathology, School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, The University of Birmingham, Birmingham, UK
| | - P R Cooper
- Oral Biology & Periodontology, School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, The University of Birmingham, Birmingham, UK
| | - M R Milward
- Periodontology, School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, The University of Birmingham, Birmingham, UK
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Wang J, Zhang D, Du J, Zhou C, Li Z, Liu X, Ouyang G, Xiao W. Tet1 facilitates hypoxia tolerance by stabilizing the HIF-α proteins independent of its methylcytosine dioxygenase activity. Nucleic Acids Res 2018; 45:12700-12714. [PMID: 29036334 PMCID: PMC5727443 DOI: 10.1093/nar/gkx869] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 09/16/2017] [Indexed: 02/07/2023] Open
Abstract
Because of the requirement of oxygen (O2) to produce energy, aerobic organisms developed mechanisms to protect themselves against a shortage of oxygen in both acute status and chronic status. To date, how organisms tolerate acute hypoxia and the underlying mechanisms remain largely unknown. Here, we identify that Tet1, one member of the ten-eleven translocation (TET) family of methylcytosine dioxygenases, is required for hypoxia tolerance in zebrafish and mice. Tet1-null zebrafish and mice are more sensitive to hypoxic conditions compared with their wild-type siblings. We demonstrate that Tet1 stabilizes hypoxia-inducible factor α (HIF-α) and enhances HIF-α transcription activity independent of its enzymatic activity. In addition, we show that Tet1 modulates HIF-2α and HIF-1α through different mechanisms. Tet1 competes with prolyl hydroxylase protein 2 (PHD2) to bind to HIF-2α, resulting in a reduction of HIF-2α hydroxylation by PHD2. For HIF-1α, however, Tet1 has no effect on HIF-1α hydroxylation, but rather it appears to stabilize the C-terminus of HIF-1α by affecting lysine site modification. Furthermore, we found that Tet1 enhances rather than prevents poly-ubiquitination on HIF-α. Our results reveal a previously unrecognized function of Tet1 independent of its methylcytosine dioxygenase activity in hypoxia signaling.
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Affiliation(s)
- Jing Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Dawei Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Juan Du
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Chi Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Zhi Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Xing Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Gang Ouyang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Wuhan Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, PR China.,The Key laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan, 430072, PR China
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30
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Rea M, Gripshover T, Fondufe-Mittendorf Y. Selective inhibition of CTCF binding by iAs directs TET-mediated reprogramming of 5-hydroxymethylation patterns in iAs-transformed cells. Toxicol Appl Pharmacol 2018; 338:124-133. [PMID: 29175454 PMCID: PMC5738917 DOI: 10.1016/j.taap.2017.11.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 11/17/2017] [Accepted: 11/19/2017] [Indexed: 12/22/2022]
Abstract
Methylation at cytosine (5mC) is a fundamental epigenetic DNA modification recently associated with iAs-mediated carcinogenesis. In contrast, the role of 5-hydroxymethylcytosine (5hmC), the oxidation product of 5mC in iAs-mediated carcinogenesis is unknown. Here we assess the hydroxymethylome in iAs-transformed cells, showing that dynamic modulation of hydroxymethylated DNA is associated with specific transcriptional networks. Moreover, this pathologic iAs-mediated carcinogenesis is characterized by a shift toward a higher hydroxymethylation pattern genome-wide. At specific promoters, hydroxymethylation correlated with increased gene expression. Furthermore, this increase in hydroxymethylation occurs concurrently with an upregulation of ten-eleven translocation (TET) enzymes that oxidize 5-methylcytosine (5mC) in DNA. To gain an understanding into how iAs might impact TET expression, we found that iAs inhibits the binding of CTCF at the proximal, weak CTCF binding sites of the TET1 and TET2 gene promoters and enhances CTCF binding at the stronger distal binding site. Further analyses suggest that this distal site acts as an enhancer, thus high CTCF occupancy at the enhancer region of TET1 and TET2 possibly drives their high expression in iAs-transformed cells. These results have major implications in understanding the impact of differential CTCF binding, genome architecture and its consequences in iAs-mediated pathogenesis.
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Affiliation(s)
- Matthew Rea
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA
| | - Tyler Gripshover
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA; Eastern Kentucky University, Richmond, KY 40475, USA
| | - Yvonne Fondufe-Mittendorf
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA.
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31
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Notch signaling pathway networks in cancer metastasis: a new target for cancer therapy. Med Oncol 2017; 34:180. [DOI: 10.1007/s12032-017-1039-6] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 09/13/2017] [Indexed: 12/19/2022]
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32
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Chen X, Wang Z, Ma H, Zhang S, Yang H, Wang H, Fang Z. Melatonin attenuates hypoxia-induced epithelial-mesenchymal transition and cell aggressive via Smad7/ CCL20 in glioma. Oncotarget 2017; 8:93580-93592. [PMID: 29212174 PMCID: PMC5706820 DOI: 10.18632/oncotarget.20525] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 08/01/2017] [Indexed: 01/27/2023] Open
Abstract
Tumor recurrence in gliomas is partly attributed to increased epithelial-mesenchymal transition (EMT) and enhanced tumor cell dissemination in the adjacent brain parenchyma. Thus, exploring effective strategies for against EMT-like changes in glioma invasion and recurrence will be important for glioma treatment. In this study, we investigated the roles of melatonin in hypoxia-induced EMT suppression, and found that melatonin could significantly suppress the release of the cytokine, CCL20, from cancer cells and antagonize glioma cell metastasis and invasion under hypoxic stress in glioma cells. Furthermore, our findings show that melatonin deregulates Smad7 expression to suppress TGFβ/Smad-mediated increase in CCL20 transcript levels and CCL20-induced EMT occurrence, suggesting a potential anti-EMT therapeutic role for melatonin in malignant transformation in gliomas.
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Affiliation(s)
- Xueran Chen
- Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.,Anhui Province Key Laboratory of Medical Physics and Technology, Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, China
| | - Zhen Wang
- Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.,Anhui Province Key Laboratory of Medical Physics and Technology, Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, China
| | - Huihui Ma
- Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.,Department of Radiation Oncology, First Affiliated Hospital, Anhui Medical University, Hefei, Anhui, 230022, China
| | - Shangrong Zhang
- Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.,Anhui Province Key Laboratory of Medical Physics and Technology, Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, China
| | - Haoran Yang
- Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.,Anhui Province Key Laboratory of Medical Physics and Technology, Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, China
| | - Hongzhi Wang
- Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.,Anhui Province Key Laboratory of Medical Physics and Technology, Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, China
| | - Zhiyou Fang
- Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.,Anhui Province Key Laboratory of Medical Physics and Technology, Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, China
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33
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Pan-urologic cancer genomic subtypes that transcend tissue of origin. Nat Commun 2017; 8:199. [PMID: 28775315 PMCID: PMC5543131 DOI: 10.1038/s41467-017-00289-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 06/13/2017] [Indexed: 01/21/2023] Open
Abstract
Urologic cancers include cancers of the bladder, kidney, prostate, and testes, with common molecular features spanning different types. Here, we show that 1954 urologic cancers can be classified into nine major genomic subtypes, on the basis of multidimensional and comprehensive molecular characterization (including DNA methylation and copy number, and RNA and protein expression). Tissue dominant effects are first removed computationally in order to define these subtypes, which reveal common processes—reflecting in part tumor microenvironmental influences—driving cellular behavior across tumor lineages. Six of the subtypes feature a mixture of represented cancer types as defined by tissue or cell of origin. Differences in patient survival and in the manifestation of specific pathways—including hypoxia, metabolism, NRF2-ARE, Hippo, and immune checkpoint—can further distinguish the subtypes. Immune checkpoint markers and molecular signatures of macrophages and T cell infiltrates are relatively high within distinct subsets of each cancer type studied. The pan-urologic cancer genomic subtypes would facilitate information sharing involving therapeutic implications between tissue-oriented domains. Urological cancers have disparate tissues and cells of origin but share many molecular features. Here, the authors use multidimensional and comprehensive molecular characterization to classify urological cancers into nine major genomic subtypes, highlighting potential therapeutic targets.
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34
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Jolly MK, Tripathi SC, Somarelli JA, Hanash SM, Levine H. Epithelial/mesenchymal plasticity: how have quantitative mathematical models helped improve our understanding? Mol Oncol 2017; 11:739-754. [PMID: 28548388 PMCID: PMC5496493 DOI: 10.1002/1878-0261.12084] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 05/11/2017] [Accepted: 05/18/2017] [Indexed: 12/17/2022] Open
Abstract
Phenotypic plasticity, the ability of cells to reversibly alter their phenotypes in response to signals, presents a significant clinical challenge to treating solid tumors. Tumor cells utilize phenotypic plasticity to evade therapies, metastasize, and colonize distant organs. As a result, phenotypic plasticity can accelerate tumor progression. A well‐studied example of phenotypic plasticity is the bidirectional conversions among epithelial, mesenchymal, and hybrid epithelial/mesenchymal (E/M) phenotype(s). These conversions can alter a repertoire of cellular traits associated with multiple hallmarks of cancer, such as metabolism, immune evasion, invasion, and metastasis. To tackle the complexity and heterogeneity of these transitions, mathematical models have been developed that seek to capture the experimentally verified molecular mechanisms and act as ‘hypothesis‐generating machines’. Here, we discuss how these quantitative mathematical models have helped us explain existing experimental data, guided further experiments, and provided an improved conceptual framework for understanding how multiple intracellular and extracellular signals can drive E/M plasticity at both the single‐cell and population levels. We also discuss the implications of this plasticity in driving multiple aggressive facets of tumor progression.
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Affiliation(s)
- Mohit Kumar Jolly
- Center for Theoretical Biological Physics, Rice University, Houston, TX, USA
| | - Satyendra C Tripathi
- Department of Clinical Cancer Prevention, UT MD Anderson Cancer Center, Houston, TX, USA
| | - Jason A Somarelli
- Department of Medicine, Duke Cancer Institute, Duke University, Durham, NC, USA
| | - Samir M Hanash
- Department of Clinical Cancer Prevention, UT MD Anderson Cancer Center, Houston, TX, USA
| | - Herbert Levine
- Center for Theoretical Biological Physics, Rice University, Houston, TX, USA
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35
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Zhou Z, Zhang H, Liu Y, Zhang Z, Du G, Li H, Yu X, Huang Y. Loss of TET1 facilitates DLD1 colon cancer cell migration via H3K27me3‐mediated down‐regulation of E‐cadherin. J Cell Physiol 2017; 233:1359-1369. [DOI: 10.1002/jcp.26012] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 05/15/2017] [Indexed: 02/06/2023]
Affiliation(s)
- Zhen Zhou
- College of Life Science and BioengineeringBeijing University of TechnologyChaoyangBeijingChina
| | - Hong‐Sheng Zhang
- College of Life Science and BioengineeringBeijing University of TechnologyChaoyangBeijingChina
| | - Yang Liu
- College of Life Science and BioengineeringBeijing University of TechnologyChaoyangBeijingChina
| | - Zhong‐Guo Zhang
- College of Life Science and BioengineeringBeijing University of TechnologyChaoyangBeijingChina
| | - Guang‐Yuan Du
- College of Life Science and BioengineeringBeijing University of TechnologyChaoyangBeijingChina
| | - Hu Li
- College of Life Science and BioengineeringBeijing University of TechnologyChaoyangBeijingChina
| | - Xiao‐Ying Yu
- College of Life Science and BioengineeringBeijing University of TechnologyChaoyangBeijingChina
| | - Ying‐Hui Huang
- College of Life Science and BioengineeringBeijing University of TechnologyChaoyangBeijingChina
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36
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Gibbons DL, Creighton CJ. Pan-cancer survey of epithelial-mesenchymal transition markers across the Cancer Genome Atlas. Dev Dyn 2017; 247:555-564. [PMID: 28073171 DOI: 10.1002/dvdy.24485] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 12/14/2016] [Accepted: 12/28/2016] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND While epithelial-mesenchymal transition (EMT) can be readily induced experimentally in cancer cells, the EMT process as manifested in human tumors needs to be better understood. Pan-cancer genomic datasets from The Cancer Genome Atlas (TCGA), representing over 10,000 patients and 32 distinct cancer types, provide a rich resource for examining correlative patterns involving EMT mediators in the setting of human cancers. RESULTS Here, we surveyed a 16-gene signature of canonical EMT markers in TCGA pan-cancer cohort. The histology or cell-of-origin of a tumor sample may align more with mesenchymal or epithelial phenotype, and noncancer as well as cancer cells can contribute to the overall molecular patterns observed within a tumor sample; correlation models involving EMT markers can factor in both of the above variables. EMT-associated genes appear coordinately expressed across all cancers and within each cancer type surveyed. Gene signatures of immune cells correlate highly with EMT marker expression in tumors. In pan-cancer analysis, several EMT-related genes can be significantly associated with worse patient outcome. CONCLUSIONS Gene correlates of EMT phenotype in human tumors could include novel mediators of EMT that might be confirmed experimentally, by which TCGA datasets may serve as a platform for discovery in ongoing studies. Developmental Dynamics 247:555-564, 2018. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Don L Gibbons
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Chad J Creighton
- Dan L. Duncan Comprehensive Cancer Center Division of Biostatistics, Baylor College of Medicine, Houston, Texas.,Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Department of Medicine, Baylor College of Medicine, Houston, Texas
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37
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Hypoxia Mediates Differential Response to Anti-EGFR Therapy in HNSCC Cells. Int J Mol Sci 2017; 18:ijms18050943. [PMID: 28468237 PMCID: PMC5454856 DOI: 10.3390/ijms18050943] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/19/2017] [Accepted: 04/24/2017] [Indexed: 01/01/2023] Open
Abstract
Despite advances in the head and neck squamous cell carcinoma (HNSCC) treatment modalities, drug resistance and cancer recurrence are often reported. Hypoxia signaling through hypoxia-inducible factor 1 (HIF-1) promotes angiogenesis and metastasis by inducing epithelial-mesenchymal-transition (EMT). The aim of this study was to evaluate the impact of hypoxia on response to therapy as well as EMT and expression of stem cell markers in HNSCC cells. Five HNSCC cell lines (UT-SCC-2, UT-SCC-14, LK0412, LK0827, and LK0923) were selected for this study. The treatment sensitivity for radiation, cisplatin, cetuximab, and dasatinib was assessed by crystal violet assay. Gene expression of EMT and cancer stem cell (CSC) markers as well as protein level of EGFR signaling molecules were analyzed by qPCR and western blotting, respectively. Unlike UT-SCC-14 and LK0827, the LK0412 cell line became significantly more sensitive to cetuximab in hypoxic conditions. This cetuximab sensitivity was efficiently reversed after suppression of HIF-1α with siRNA. Additionally, hypoxia-induced EMT and expression of stem cell markers in HNSCC cells was partially revoked by treatment with cetuximab or knockdown of HIF-1α. In summary, our study shows that hypoxia might have a positive influence on the anti-EGFR therapy effectiveness in HNSCC. However, due to heterogeneity of HNSCC lesions, targeting HIF-1α may not be sufficient to mediate such a response. Further studies identifying a trait of hypoxia-specific response to cetuximab in HNSCC are advisable.
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38
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Alivand MR, Soheili ZS, Pornour M, Solali S, Sabouni F. Novel Epigenetic Controlling of Hypoxia Pathway Related to Overexpression and Promoter Hypomethylation of TET1 and TET2 in RPE Cells. J Cell Biochem 2017; 118:3193-3204. [PMID: 28252217 DOI: 10.1002/jcb.25965] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 02/28/2017] [Indexed: 12/19/2022]
Abstract
CpG methylation of DNA takes part in a specific epigenetic memory that plays crucial roles in the differentiation and abnormality of the cells. The methylation pattern aberration of genomes is affected in three ways, namely DNA methyltransferase (DNMT), ten-eleven translocation (TET), and methyl-binding domain (MBD) proteins. Of these, TET enzymes have recently been demonstrated to be master modifier enzymes in the DNA methylation process. Additionally, recent studies emphasize that not only epigenetic phenomena play a role in controlling hypoxia pathway, but the hypoxia condition also triggers hypomethylation of genomes that may help with the expression of hypoxia pathway genes. In this study, we suggested that TET1 and TET2 could play a role in the demethylation of genomes under chemical hypoxia conditions. Herein, the evaluating methylation status and mRNA expression of mentioned genes were utilized through real-time PCR and methylation-specific PCR (MSP), respectively. Our results showed that TET1 and TET2 genes were overexpressed (P < 0.05) under chemical hypoxia conditions in Retinal Pigment Epithelial (RPE) cells, whereas the promoter methylation status of them were hypomethylated in the same condition. Therefore, chemical hypoxia not only causes overexpression of TET1 and TET2 but also could gradually do promoter demethylation of same genes. This is the first study to show the relationship between epigenetics and the expression of mentioned genes related to hypoxia pathways. Furthermore, it seems that these associations in RPE cells are subjected to chemical hypoxia as a mechanism that could play a crucial role in methylation pattern changes of hypoxia-related diseases such as cancer and ischemia. J. Cell. Biochem. 118: 3193-3204, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Mohammad Reza Alivand
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zahra-Soheila Soheili
- Department of Molecular Medicine, Institute of Medical Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | | | - Saeed Solali
- Department of Hematology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farzaneh Sabouni
- Department of Molecular Medicine, Institute of Medical Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
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39
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Morandi A, Taddei ML, Chiarugi P, Giannoni E. Targeting the Metabolic Reprogramming That Controls Epithelial-to-Mesenchymal Transition in Aggressive Tumors. Front Oncol 2017; 7:40. [PMID: 28352611 PMCID: PMC5348536 DOI: 10.3389/fonc.2017.00040] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 02/28/2017] [Indexed: 01/06/2023] Open
Abstract
The epithelial-to-mesenchymal transition (EMT) process allows the trans-differentiation of a cell with epithelial features into a cell with mesenchymal characteristics. This process has been reported to be a key priming event for tumor development and therefore EMT activation is now considered an established trait of malignancy. The transcriptional and epigenetic reprogramming that governs EMT has been extensively characterized and reviewed in the last decade. However, increasing evidence demonstrates a correlation between metabolic reprogramming and EMT execution. The aim of the current review is to gather the recent findings that illustrate this correlation to help deciphering whether metabolic changes are causative or just a bystander effect of EMT activation. The review is divided accordingly to the catabolic and anabolic pathways that characterize carbohydrate, aminoacid, and lipid metabolism. Moreover, at the end of each part, we have discussed a series of potential metabolic targets involved in EMT promotion and execution for which drugs are either available or that could be further investigated for therapeutic intervention.
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Affiliation(s)
- Andrea Morandi
- Department of Experimental and Clinical Biomedical Sciences, University of Florence , Florence , Italy
| | - Maria Letizia Taddei
- Department of Experimental and Clinical Medicine, University of Florence , Florence , Italy
| | - Paola Chiarugi
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy; Excellence Centre for Research, Transfer and High Education DenoTHE, University of Florence, Florence, Italy
| | - Elisa Giannoni
- Department of Experimental and Clinical Biomedical Sciences, University of Florence , Florence , Italy
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40
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Tian YP, Zhu YM, Sun XH, Lai MD. Multiple Functions of Ten-eleven Translocation 1 during Tumorigenesis. Chin Med J (Engl) 2017; 129:1744-51. [PMID: 27411465 PMCID: PMC4960967 DOI: 10.4103/0366-6999.185873] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Objective: Aberrant expression of ten-eleven translocation 1 (TET1) plays a critical role in tumor development and progression. We systematically summarized the latest research progress on the role and mechanisms of TET1 in cancer biology. Data Sources: Relevant articles published in English from 1980 to April 2016 were selected from the PubMed database. The terms “ten-eleven translocation 1,” “5mC,” “5hmC,” “microRNA,” “hypoxia,” and “embryonic stem cell” were used for the search. Study Selection: Articles focusing on the role and mechanism of TET1 in tumor were reviewed, including clinical and basic research articles. Results: TET proteins, the key enzymes converting 5-methylcytosine to 5-hydroxymethylcytosine, play vital roles in DNA demethylation regulation. Recent studies have shown that loss of TET1 is associated with tumorigenesis and can be used as a potential biomarker for cancer therapy, which indicates that TET1 serves as tumor suppressor gene. Moreover, besides its dioxygenase activity, TET1 could induce epithelial-mesenchymal transition and act as a coactivator to regulate gene transcription, such as developmental regulator in embryonic stem cells (ESCs) and hypoxia-responsive gene in cancer. The regulation of TET1 is also correlated with microRNA in a posttranscriptional modification process. Hence, it is complex but critical to comprehend the mechanisms of TET1 in the biology of ESCs and cancer. Conclusions: TET1 not only serves as a demethylation enzyme but also plays multiple roles during tumorigenesis and progression. More studies should be carried out to elucidate the exact mechanisms of TET1 and its associations with cancer before considering it as a therapeutic tool.
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Affiliation(s)
- Yi-Ping Tian
- Department of Pathology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058; Key Laboratory of Disease Proteomics of Zhejiang Province, School of Basic Medical Sciences, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
| | - Yi-Min Zhu
- Department of Epidemiology and Biostatistics, Zhejiang University School of Public Health, Hangzhou, Zhejiang 310058, China
| | - Xiao-Hui Sun
- Department of Epidemiology and Biostatistics, Zhejiang University School of Public Health, Hangzhou, Zhejiang 310058, China
| | - Mao-De Lai
- Department of Pathology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058; Key Laboratory of Disease Proteomics of Zhejiang Province, School of Basic Medical Sciences, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
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41
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Sala P, de Miranda Torrinhas RSM, Fonseca DC, Ravacci GR, Waitzberg DL, Giannella-Neto D. Tissue-specific methylation profile in obese patients with type 2 diabetes before and after Roux-en-Y gastric bypass. Diabetol Metab Syndr 2017; 9:15. [PMID: 28250848 PMCID: PMC5322591 DOI: 10.1186/s13098-017-0214-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 02/14/2017] [Indexed: 12/19/2022] Open
Abstract
Eating habits, lifestyles, and exposure to specific environmental factors can greatly impact the risk of developing type 2 diabetes (T2D), influence the genome epigenetically, and affect the expression of genes, including genes related to glycemic control, at any stage of life. The epigenetic mechanism underlying obesity and T2D pathogenesis remains poorly understood. Conventional strategies for the treatment of obesity and its comorbidities often have poor long-term adherence, and pharmacological interventions are limited. Bariatric surgery is the most effective current option to treat severe obesity, and Roux-en-Y gastric bypass (RYGB) is the most applied technique worldwide. Epigenetic changes differ depending on the approach used to treat obesity and its associated comorbidities (clinical or surgical). Compared to primary clinical care, bariatric surgery leads to much greater loss of body weight and higher remission rates of T2D and metabolic syndrome, with methylation profiles in promoter regions of genes in obese individuals becoming similar to those of normal-weight individuals. Bariatric surgery can influence DNA methylation in parallel with changes in gene expression pattern. Changes in clinical biomarkers that reflect improvements in glucose and lipid metabolism after RYGB often occur before major weight loss and are coordinated by surgery-induced changes in intestinal hormones. Therefore, the intestine methylation profile would assist in understanding the mechanisms involved in improved glycemic control after bariatric surgery. The main objectives in this area for the future are to identify epigenetic marks that could be used as early indicators of metabolic risk, and to develop treatments able to delay or even reverse these epigenetic changes. Studies that provide the "human epigenetic profile" will be of considerable value to identify tissue-specific epigenetic signatures and their role in the development of chronic diseases. Further studies should apply methods based on global analysis of the genome to identify methylated sites associated with disease and epigenetic marks associated with the remodeling response to bariatric surgery. This review describes the main epigenetic alterations associated with obesity and T2D and the potential role of RYGB in remodeling these changes.
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Affiliation(s)
- Priscila Sala
- FMUSP—Department of Gastroenterology, Digestive Surgery Discipline, School of Medicine, University of São Paulo (LIM 35), São Paulo, Brazil
| | | | - Danielle Cristina Fonseca
- FMUSP—Department of Gastroenterology, Digestive Surgery Discipline, School of Medicine, University of São Paulo (LIM 35), São Paulo, Brazil
| | - Graziela Rosa Ravacci
- FMUSP—Department of Gastroenterology, Digestive Surgery Discipline, School of Medicine, University of São Paulo (LIM 35), São Paulo, Brazil
| | - Dan Linetzky Waitzberg
- FMUSP—Department of Gastroenterology, Digestive Surgery Discipline, School of Medicine, University of São Paulo (LIM 35), São Paulo, Brazil
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