1
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Zhao K, Wang X, Jin Y, Zhu X, Zhou T, Yu Y, Ji X, Chang Y, Luo J, Ni X, Guo Y, Yu D. LncRNA ZNF674-AS1 drives cell growth and inhibits cisplatin-induced pyroptosis via up-regulating CA9 in neuroblastoma. Cell Death Dis 2024; 15:5. [PMID: 38177154 PMCID: PMC10766958 DOI: 10.1038/s41419-023-06394-8] [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: 08/23/2023] [Revised: 12/14/2023] [Accepted: 12/14/2023] [Indexed: 01/06/2024]
Abstract
Neuroblastoma (NB) is a challenging pediatric extracranial solid tumor characterized by a poor prognosis and resistance to chemotherapy. Identifying targets to enhance chemotherapy sensitivity in NB is of utmost importance. Increasing evidence implicates long noncoding RNAs (lncRNAs) play important roles in cancer, but their functional roles remain largely unexplored. Here, we analyzed our RNA sequencing data and identified the upregulated lncRNA ZNF674-AS1 in chemotherapy non-responsive NB patients. Elevated ZNF674-AS1 expression is associated with poor prognosis and high-risk NB. Importantly, targeting ZNF674-AS1 expression in NB cells suppressed tumor growth in vivo. Further functional studies have revealed that ZNF674-AS1 constrains cisplatin sensitivity by suppressing pyroptosis and promoting cell proliferation. Moreover, ZNF674-AS1 primarily relies on CA9 to fulfill its functions on cisplatin resistance. High CA9 levels were associated with high-risk NB and predicted poor patient outcomes. Mechanistically, ZNF674-AS1 directly interacted with the RNA binding protein IGF2BP3 to enhance the stability of CA9 mRNA by binding with CA9 transcript, leading to elevated CA9 expression. As a novel regulator of CA9, IGF2BP3 positively upregulated CA9 expression. Together, these results expand our understanding of the cancer-associated function of lncRNAs, highlighting the ZNF674-AS1/IGF2BP3/CA9 axis as a constituting regulatory mode in NB tumor growth and cisplatin resistance. These insights reveal the pivotal role of ZNF674-AS1 inhibition in recovering cisplatin sensitivity, thus providing potential therapeutic targets for NB treatment.
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Affiliation(s)
- Kunming Zhao
- School of Public Health, Qingdao University, 266071, Qingdao, Shandong Province, China
| | - Xinyi Wang
- School of Public Health, Qingdao University, 266071, Qingdao, Shandong Province, China
| | - Yaqiong Jin
- Beijing Key Laboratory for Pediatric Diseases of Otolaryngology, Head and Neck Surgery, MOE Key Laboratory of Major Diseases in Children, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health (NCCH), Beijing, China
| | - Xiaoxiao Zhu
- School of Public Health, Qingdao University, 266071, Qingdao, Shandong Province, China
| | - Tao Zhou
- School of Public Health, Qingdao University, 266071, Qingdao, Shandong Province, China
| | - Yongbo Yu
- Beijing Key Laboratory for Pediatric Diseases of Otolaryngology, Head and Neck Surgery, MOE Key Laboratory of Major Diseases in Children, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health (NCCH), Beijing, China
| | - Xiaoying Ji
- School of Public Health, Qingdao University, 266071, Qingdao, Shandong Province, China
| | - Yan Chang
- Beijing Key Laboratory for Pediatric Diseases of Otolaryngology, Head and Neck Surgery, MOE Key Laboratory of Major Diseases in Children, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health (NCCH), Beijing, China
| | - Jiao Luo
- School of Public Health, Qingdao University, 266071, Qingdao, Shandong Province, China
| | - Xin Ni
- Beijing Key Laboratory for Pediatric Diseases of Otolaryngology, Head and Neck Surgery, MOE Key Laboratory of Major Diseases in Children, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health (NCCH), Beijing, China.
| | - Yongli Guo
- Beijing Key Laboratory for Pediatric Diseases of Otolaryngology, Head and Neck Surgery, MOE Key Laboratory of Major Diseases in Children, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health (NCCH), Beijing, China.
| | - Dianke Yu
- School of Public Health, Qingdao University, 266071, Qingdao, Shandong Province, China.
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2
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Andreucci E, Biagioni A, Peri S, Versienti G, Cianchi F, Staderini F, Antonuzzo L, Supuran CT, Olivo E, Pasqualini E, Messerini L, Massi D, Lulli M, Ruzzolini J, Peppicelli S, Bianchini F, Schiavone N, Calorini L, Magnelli L, Papucci L. The CAIX inhibitor SLC-0111 exerts anti-cancer activity on gastric cancer cell lines and resensitizes resistant cells to 5-Fluorouracil, taxane-derived, and platinum-based drugs. Cancer Lett 2023; 571:216338. [PMID: 37549770 DOI: 10.1016/j.canlet.2023.216338] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 08/04/2023] [Accepted: 08/04/2023] [Indexed: 08/09/2023]
Abstract
Gastric cancer (GC) is the fifth most frequent malignancy and the fourth leading cause of worldwide cancer-related death. Despite the usage of multimodal perioperative chemotherapy (pCT), GC progressively gains chemoresistance, thereby, the identification of suitable targets to overcome drug resistance is fundamental. Amongst the potential biomarkers, carbonic anhydrase IX (CAIX) - associated with a poor prognosis of several solid cancers - has gained the most attention. In a cohort of GC patients who received perioperative FLOT (i.e., Leucovorin, 5-Fluouracil, Docetaxel, and Oxaliplatin) or FOLFOX (i.e., Leucovorin, 5-Fluouracil, and Oxaliplatin), non-responder patients showed an increased expression of tumor CAIX compared to responder group. Moreover, GC cell lines induced to be resistant to 5-Fluouracil, Paclitaxel, Cisplatin, or the combination of 5-Fluorouracil, Oxaliplatin, and Docetaxel, overexpressed CAIX compared to the control. Accordingly, CAIX-high-expressing GC cells showed increased therapy resistance compared to low-expressing cells. Notably, SLC0111 significantly improved the therapy response of both wild-type and resistant GC cells. Overall, these data suggest a correlation between CAIX and GC drug resistance highlighting the potential of SLC-0111 in re-sensitizing GC cells to pCT.
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Affiliation(s)
- Elena Andreucci
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale GC Morgagni 50, 50134, Firenze, Italy
| | - Alessio Biagioni
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale GC Morgagni 50, 50134, Firenze, Italy
| | - Sara Peri
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134, Firenze, Italy
| | - Giampaolo Versienti
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale GC Morgagni 50, 50134, Firenze, Italy
| | - Fabio Cianchi
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134, Firenze, Italy; Unit of Digestive Surgery, Careggi University Hospital, Largo Brambilla 3, 50134, Firenze, Italy.
| | - Fabio Staderini
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134, Firenze, Italy; Unit of Digestive Surgery, Careggi University Hospital, Largo Brambilla 3, 50134, Firenze, Italy
| | - Lorenzo Antonuzzo
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134, Firenze, Italy; Clinical Oncology Unit, Careggi University Hospital, Largo Brambilla 3, 50134, Firenze, Italy
| | - Claudiu T Supuran
- Department of NEUROFARBA, University of Florence, Via Ugo Schiff 6, 50019, Sesto Fiorentino, Italy
| | - Erika Olivo
- Department of Health Sciences, University of Florence, Viale Pieraccini 6, 50139, Firenze, Italy
| | - Elisa Pasqualini
- Department of Health Sciences, University of Florence, Viale Pieraccini 6, 50139, Firenze, Italy
| | - Luca Messerini
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134, Firenze, Italy
| | - Daniela Massi
- Department of Health Sciences, University of Florence, Viale Pieraccini 6, 50139, Firenze, Italy
| | - Matteo Lulli
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale GC Morgagni 50, 50134, Firenze, Italy
| | - Jessica Ruzzolini
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale GC Morgagni 50, 50134, Firenze, Italy
| | - Silvia Peppicelli
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale GC Morgagni 50, 50134, Firenze, Italy
| | - Francesca Bianchini
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale GC Morgagni 50, 50134, Firenze, Italy
| | - Nicola Schiavone
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale GC Morgagni 50, 50134, Firenze, Italy
| | - Lido Calorini
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale GC Morgagni 50, 50134, Firenze, Italy
| | - Lucia Magnelli
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale GC Morgagni 50, 50134, Firenze, Italy.
| | - Laura Papucci
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale GC Morgagni 50, 50134, Firenze, Italy
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3
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Abudurousuli K, Talihati Z, Hailati S, Han MY, Nuer M, Khan N, Maihemuti N, Dilimulati D, Nueraihemaiti N, Simayi J, Zhou W. Investigation of target genes and potential mechanisms related to compound Xiao-ai-fei honey ointment based on network pharmacology and bioinformatics analysis. Medicine (Baltimore) 2023; 102:e34629. [PMID: 37565919 PMCID: PMC10419591 DOI: 10.1097/md.0000000000034629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/14/2023] [Indexed: 08/12/2023] Open
Abstract
BACKGROUND Compound Xiao-ai-fei honey ointment (CXHO) is an anticancer preparation with a long history in Uyghur folk medicine in China and has been used for the treatment of gastric cancer (GC) in Xinjiang, China. Nevertheless, the mechanism of its anticancer effect remains to be investigated. METHODS Bioactive ingredients of CXHO were retrieved from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform database. Target genes of ingredients were acquired via the PubChem and Swiss target prediction database. Gene expression profiling of GC was obtained from GSE54129 in the GEO database and analyzed using the limma package in R. The hub genes associated with CXHO in GC were validated using the TIMER2.0 database, GEPIA2 database and Auto Dock tools. The effect of CXHO on migration of GC cells was detected by Transwell chamber assay and Wound healing assay. The effect of CXHO on expression levels of MMP2/MMP9 and NF-κb, PI3K/AKT signaling pathway was detected by Western blot assay. RESULTS Forty-five bioactive ingredients and their 819 related genes were found. A total of 462 differentially expressed genes were identified between GC patients and healthy controls. Seventeen common target genes were identified as hub genes CXHO against GC. Among them, MMP2 and MMP9 were significantly associated with tumor immune infiltrates and had good binding affinity with effective ingredients. Moreover, we validated the mRNA and protein expression levels and prognostic value of MMP2 and MMP9 by different databases. In addition, Kyoto encyclopedia of genes and genomes and gene ontology analyses showed that the 17 common target genes were mainly involved in steroid hormone biosynthesis and cancer-related pathways. Experimental results showed that CXHO inhibited migration of GC cells and down regulated the expression levels of MMP2/MMP9, NF-κb. In addition, CXHO can inhibited PI3K/AKT signaling pathway. CONCLUSION We identified and experimental validated 2 pivotal target genes of CXHO against GC and preliminarily analyzed the potential mechanisms by which CXHO inhibits the development of GC. All these findings support CXHO as a promising drug for the treatment of GC.
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Affiliation(s)
- Kayisaier Abudurousuli
- Department of Pharmacology, School of Pharmacy, Xinjiang Medical University, Urumqi, P.R. China
| | - Ziruo Talihati
- Department of Pharmacology, School of Pharmacy, Xinjiang Medical University, Urumqi, P.R. China
| | - Sendaer Hailati
- Department of Pharmacology, School of Pharmacy, Xinjiang Medical University, Urumqi, P.R. China
| | - Meng Yuan Han
- Department of Pharmacology, School of Pharmacy, Xinjiang Medical University, Urumqi, P.R. China
| | - Muhadaisi Nuer
- Department of Pharmacology, School of Pharmacy, Xinjiang Medical University, Urumqi, P.R. China
| | - Nawaz Khan
- Department of Pharmacology, School of Pharmacy, Xinjiang Medical University, Urumqi, P.R. China
| | - Nulibiya Maihemuti
- Department of Pharmacology, School of Pharmacy, Xinjiang Medical University, Urumqi, P.R. China
| | - Dilihuma Dilimulati
- Department of Pharmacology, School of Pharmacy, Xinjiang Medical University, Urumqi, P.R. China
| | - Nuerbiye Nueraihemaiti
- Department of Pharmacology, School of Pharmacy, Xinjiang Medical University, Urumqi, P.R. China
| | - Jimilihan Simayi
- Department of Pharmacology, School of Pharmacy, Xinjiang Medical University, Urumqi, P.R. China
| | - Wenting Zhou
- Department of Pharmacology, School of Pharmacy, Xinjiang Medical University, Urumqi, P.R. China
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4
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Queen A, Bhutto HN, Yousuf M, Syed MA, Hassan MI. Carbonic anhydrase IX: A tumor acidification switch in heterogeneity and chemokine regulation. Semin Cancer Biol 2022; 86:899-913. [PMID: 34998944 DOI: 10.1016/j.semcancer.2022.01.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/30/2021] [Accepted: 01/03/2022] [Indexed: 02/07/2023]
Abstract
The primary physiological process of respiration produces carbon dioxide (CO2) that reacts with water molecules which subsequently liberates bicarbonate (HCO-3) and protons. Carbonic anhydrases (CAs) are the primary catalyst involved in this conversion. More than 16 isoforms of human CAs show organ or subcellular specific activity. Dysregulation of each CA is associated with multiple pathologies. Out of these members, the overexpression of membrane-bound carbonic anhydrase IX (CAIX) is associated explicitly with hypoxic tumors or various solid cancers. CAIX helps tumors deal with higher CO2 by sequestering it with bicarbonate ions and helping cancer cells to grow in a comparatively hypoxic or acidic environment, thus acting as a pH adaptation switch. CAIX-mediated adaptations in cancer cells include angiogenesis, metabolic alterations, tumor heterogeneity, drug resistance, and regulation of cancer-specific chemokines. This review comprehensively collects and describe the cancer-specific expression mechanism and role of CAIX in cancer growth, progression, heterogeneity, and its structural insight to develop future combinatorial targeted cancer therapies.
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Affiliation(s)
- Aarfa Queen
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110025, India
| | - Humaira Naaz Bhutto
- Department of Biotechnology, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110025, India
| | - Mohd Yousuf
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110025, India
| | - Mansoor Ali Syed
- Department of Biotechnology, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110025, India
| | - Md Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110025, India.
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5
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Shamis SA, Quinn J, Mallon EE, Edwards J, McMillan DC. The Relationship Between the Tumor Cell Expression of Hypoxic Markers and Survival in Patients With ER-positive Invasive Ductal Breast Cancer. J Histochem Cytochem 2022; 70:479-494. [PMID: 35792080 PMCID: PMC9284237 DOI: 10.1369/00221554221110280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The prognostic significance of hypoxia markers, hypoxia-inducible factor-1α
(HIF-1α), hypoxia-inducible factor-2α (HIF-2α), and carbonic anhydrase IX
(CAIX), was investigated in estrogen receptor (ER)-positive breast cancer
patients. Immunohistochemistry determined the expression of makers in two
independent ductal ER-positive cohorts (Training set, n=373 and
Validation set, n=285) and was related to clinicopathological
parameters and disease-free survival (DFS). In the training cohort, nuclear
HIF-1α (1) was independently associated with poorer DFS in luminal A tumors
[hazard ratio (HR) = 0.53 95% confidence interval (CI): 0.30–0.94,
p=0.030]. In the validation cohort, both HIF-1α (1) and
CAIX were independently associated with decreased DFS in the entire cohort (HR =
1.85 95% CI: 1.10–3.11, p=0.019; HR = 1.74 95% CI: 1.08–2.82,
p=0.023), in luminal A disease (HR = 1.98 95% CI:
1.02–3.83, p=0.042), and in luminal B disease (HR = 2.75 95%
CI: 1.66–4.55, p<0.001), respectively. Taken together,
elevated cytoplasmic HIF-1α (1) expression was an independent prognostic factor
in luminal A disease, whereas CAIX was an independent prognostic factor in
luminal B disease. Further work in large tissue cohorts is required.
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Affiliation(s)
- Suad A.K. Shamis
- Academic Unit of Surgery, School of Medicine, University of Glasgow, Glasgow, United Kingdom
- Unit of Molecular Pathology, Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Jean Quinn
- Unit of Molecular Pathology, Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Elizabeth E.A. Mallon
- Department of Pathology, Queen Elizabeth University Hospital, Glasgow, United Kingdom
| | - Joanne Edwards
- Unit of Molecular Pathology, Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Donald C. McMillan
- Academic Unit of Surgery, School of Medicine, University of Glasgow, Glasgow, United Kingdom
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6
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Abante J, Kambhampati S, Feinberg AP, Goutsias J. Estimating DNA methylation potential energy landscapes from nanopore sequencing data. Sci Rep 2021; 11:21619. [PMID: 34732768 PMCID: PMC8566571 DOI: 10.1038/s41598-021-00781-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 10/18/2021] [Indexed: 11/23/2022] Open
Abstract
High-throughput third-generation nanopore sequencing devices have enormous potential for simultaneously observing epigenetic modifications in human cells over large regions of the genome. However, signals generated by these devices are subject to considerable noise that can lead to unsatisfactory detection performance and hamper downstream analysis. Here we develop a statistical method, CpelNano, for the quantification and analysis of 5mC methylation landscapes using nanopore data. CpelNano takes into account nanopore noise by means of a hidden Markov model (HMM) in which the true but unknown (“hidden”) methylation state is modeled through an Ising probability distribution that is consistent with methylation means and pairwise correlations, whereas nanopore current signals constitute the observed state. It then estimates the associated methylation potential energy function by employing the expectation-maximization (EM) algorithm and performs differential methylation analysis via permutation-based hypothesis testing. Using simulations and analysis of published data obtained from three human cell lines (GM12878, MCF-10A, and MDA-MB-231), we show that CpelNano can faithfully estimate DNA methylation potential energy landscapes, substantially improving current methods and leading to a powerful tool for the modeling and analysis of epigenetic landscapes using nanopore sequencing data.
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Affiliation(s)
- Jordi Abante
- Whitaker Biomedical Engineering Institute, Johns Hopkins University, Baltimore, MD, 21218, USA. .,Department of Electrical & Computer Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA. .,Department of Biomedical Data Science, Stanford University School of Medicine, Stanford, CA, 94305, USA.
| | - Sandeep Kambhampati
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA.,Department of Biomedical Informatics, Harvard Medical School, Boston, MA, 02115, USA
| | - Andrew P Feinberg
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA.,Center for Epigenetics, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.,Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - John Goutsias
- Whitaker Biomedical Engineering Institute, Johns Hopkins University, Baltimore, MD, 21218, USA. .,Department of Electrical & Computer Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA.
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7
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Nortunen M, Parkkila S, Saarnio J, Huhta H, Karttunen TJ. Carbonic Anhydrases II and IX in Non-ampullary Duodenal Adenomas and Adenocarcinoma. J Histochem Cytochem 2021; 69:677-690. [PMID: 34636283 DOI: 10.1369/00221554211050133] [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: 12/16/2022] Open
Abstract
Non-ampullary duodenal adenocarcinoma (DAC) is a rare malignancy. Little information is available concerning the histopathological prognostic factors associated with DAC. Carbonic anhydrases (CAs) are metalloenzymes catalyzing the universal reaction of CO2 hydration. Isozymes CAII, CAIX, and CAXII are associated with prognosis in various cancers. Our aim was to analyze the immunohistochemical expressions of CAII, CAIX, and CAXII in normal duodenal epithelium, duodenal adenomas, and adenocarcinoma and their associations with clinicopathological variables and survival. Our retrospective study included all 27 DACs treated in Oulu University Hospital during years 2000-2020. For comparison, samples of 42 non-ampullary adenomas were collected. CAII expression was low in duodenal adenomas and adenocarcinoma. CAIX expression in adenomas and adenocarcinoma was comparable with the high expression of normal duodenal crypts. Expression patterns in carcinomas were largely not related to clinicopathological features. However, low expression of CAII associated with poorer differentiation of the tumor (p=0.049) and low expression of CAIX showed a trend for association with nodal spread, although statistical significance was not reached (p=0.091). CAII and CAIX lost their epithelial polarization and staining intensity in adenomas. CAXII expression was not detected in the studied samples. CAs were not associated with survival. The prognostic value of CAII and CAIX downregulation should be further investigated. Both isozymes may serve as biomarkers of epithelial dysplasia in the duodenum.
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Affiliation(s)
- Minna Nortunen
- Research Unit of Surgery, Anesthesia and Intensive Care, University of Oulu, Oulu, Finland.,Department of Surgery, Oulu University Hospital and Medical Research Center Oulu, Oulu, Finland.,Cancer and Translational Medicine Research Unit, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, Finland
| | - Seppo Parkkila
- Faculty of Medicine and Health Technology, Tampere University and Fimlab Ltd, Tampere University Hospital, Tampere, Finland (SP)
| | - Juha Saarnio
- Research Unit of Surgery, Anesthesia and Intensive Care, University of Oulu, Oulu, Finland.,Department of Surgery, Oulu University Hospital and Medical Research Center Oulu, Oulu, Finland.,Cancer and Translational Medicine Research Unit, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, Finland
| | - Heikki Huhta
- Research Unit of Surgery, Anesthesia and Intensive Care, University of Oulu, Oulu, Finland.,Department of Surgery, Oulu University Hospital and Medical Research Center Oulu, Oulu, Finland.,Cancer and Translational Medicine Research Unit, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, Finland
| | - Tuomo J Karttunen
- Cancer and Translational Medicine Research Unit, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, Finland
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8
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Shen T, Xia W, Min S, Yang Z, Cheng L, Wang W, Zhan Q, Shao F, Zhang X, Wang Z, Zhang Y, Shen G, Zhang H, Wu LL, Yu GY, Kong QP, Wang X. A pair of long intergenic non-coding RNA LINC00887 variants act antagonistically to control Carbonic Anhydrase IX transcription upon hypoxia in tongue squamous carcinoma progression. BMC Biol 2021; 19:192. [PMID: 34493285 PMCID: PMC8422755 DOI: 10.1186/s12915-021-01112-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 07/30/2021] [Indexed: 12/11/2022] Open
Abstract
Background Long noncoding RNAs (lncRNAs) are important regulators in tumor progression. However, their biological functions and underlying mechanisms in hypoxia adaptation remain largely unclear. Results Here, we established a correlation between a Chr3q29-derived lncRNA gene and tongue squamous carcinoma (TSCC) by genome-wide analyses. Using RACE, we determined that two novel variants of this lncRNA gene are generated in TSCC, namely LINC00887_TSCC_short (887S) and LINC00887_TSCC_long (887L). RNA-sequencing in 887S or 887L loss-of-function cells identified their common downstream target as Carbonic Anhydrase IX (CA9), a gene known to be upregulated by hypoxia during tumor progression. Mechanistically, our results showed that the hypoxia-augmented 887S and constitutively expressed 887L functioned in opposite directions on tumor progression through the common target CA9. Upon normoxia, 887S and 887L interacted. Upon hypoxia, the two variants were separated. Each RNA recognized and bound to their responsive DNA cis-acting elements on CA9 promoter: 887L activated CA9’s transcription through recruiting HIF1α, while 887S suppressed CA9 through DNMT1-mediated DNA methylation. Conclusions We provided hypoxia-permitted functions of two antagonistic lncRNA variants to fine control the hypoxia adaptation through CA9. Supplementary Information The online version contains supplementary material available at 10.1186/s12915-021-01112-2.
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Affiliation(s)
- Tao Shen
- Department of Geriatrics, Gerontology Institute of Anhui Province, The First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Anhui Provincial Key Laboratory of Tumor Immunotherapy and Nutrition Therapy, Hefei, China.,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Wangxiao Xia
- State Key Laboratory of Genetic Resources and Evolution/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, 650223, China
| | - Sainan Min
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Zixuan Yang
- Department of Geriatrics, Gerontology Institute of Anhui Province, The First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Anhui Provincial Key Laboratory of Tumor Immunotherapy and Nutrition Therapy, Hefei, China.,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Lehua Cheng
- State Key Laboratory of Genetic Resources and Evolution/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, 650223, China
| | - Wei Wang
- Department of Geriatrics, Gerontology Institute of Anhui Province, The First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Anhui Provincial Key Laboratory of Tumor Immunotherapy and Nutrition Therapy, Hefei, China.,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Qianxi Zhan
- Department of Geriatrics, Gerontology Institute of Anhui Province, The First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Anhui Provincial Key Laboratory of Tumor Immunotherapy and Nutrition Therapy, Hefei, China.,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Fanghong Shao
- Department of Geriatrics, Gerontology Institute of Anhui Province, The First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Anhui Provincial Key Laboratory of Tumor Immunotherapy and Nutrition Therapy, Hefei, China.,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Xuehan Zhang
- Department of Geriatrics, Gerontology Institute of Anhui Province, The First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Anhui Provincial Key Laboratory of Tumor Immunotherapy and Nutrition Therapy, Hefei, China.,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Zhiyu Wang
- Department of Medical Oncology, Affiliated Hospital of Hebei University, Baoding, 071000, China
| | - Yan Zhang
- School of Health Services Management, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Guodong Shen
- Department of Geriatrics, Gerontology Institute of Anhui Province, The First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Anhui Provincial Key Laboratory of Tumor Immunotherapy and Nutrition Therapy, Hefei, China
| | - Huafeng Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Li-Ling Wu
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China
| | - Guang-Yan Yu
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Qing-Peng Kong
- State Key Laboratory of Genetic Resources and Evolution/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, 650223, China. .,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, 650223, China. .,KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming, 650223, China.
| | - Xiangting Wang
- Department of Geriatrics, Gerontology Institute of Anhui Province, The First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China. .,Anhui Provincial Key Laboratory of Tumor Immunotherapy and Nutrition Therapy, Hefei, China. .,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China.
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9
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Bazzocco S, Dopeso H, Martínez-Barriocanal Á, Anguita E, Nieto R, Li J, García-Vidal E, Maggio V, Rodrigues P, de Marcondes PG, Schwartz S, Aaltonen LA, Sánchez A, Mariadason JM, Arango D. Identification of ZBTB18 as a novel colorectal tumor suppressor gene through genome-wide promoter hypermethylation analysis. Clin Epigenetics 2021; 13:88. [PMID: 33892786 PMCID: PMC8063439 DOI: 10.1186/s13148-021-01070-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 04/07/2021] [Indexed: 12/31/2022] Open
Abstract
Background Cancer initiation and progression are driven by genetic and epigenetic changes. Although genome/exome sequencing has significantly contributed to the characterization of the genetic driver alterations, further investigation is required to systematically identify cancer driver genes regulated by promoter hypermethylation. Results Using genome-wide analysis of promoter methylation in 45 colorectal cancer cell lines, we found that higher overall methylation levels were associated with microsatellite instability (MSI), faster proliferation and absence of APC mutations. Because epigenetically silenced genes could represent important oncogenic drivers, we used mRNA expression profiling of colorectal cancer cell lines and primary tumors to identify a subset of 382 (3.9%) genes for which promoter methylation was negatively associated with gene expression. Remarkably, a significant enrichment in zinc finger proteins was observed, including the transcriptional repressor ZBTB18. Re-introduction of ZBTB18 in colon cancer cells significantly reduced proliferation in vitro and in a subcutaneous xenograft mouse model. Moreover, immunohistochemical analysis revealed that ZBTB18 is frequently lost or reduced in colorectal tumors, and reduced ZBTB18 expression was found to be associated with lymph node metastasis and shorter survival of patients with locally advanced colorectal cancer. Conclusions We identified a set of 382 genes putatively silenced by promoter methylation in colorectal cancer that could significantly contribute to the oncogenic process. Moreover, as a proof of concept, we demonstrate that the epigenetically silenced gene ZBTB18 has tumor suppressor activity and is a novel prognostic marker for patients with locally advanced colorectal cancer. Supplementary Information The online version contains supplementary material available at 10.1186/s13148-021-01070-0.
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Affiliation(s)
- Sarah Bazzocco
- Group of Biomedical Research in Digestive Tract Tumors, CIBBIM-Nanomedicine, Vall d'Hebron University Hospital, Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron, 119-129, 08035, Barcelona, Spain
| | - Higinio Dopeso
- Group of Biomedical Research in Digestive Tract Tumors, CIBBIM-Nanomedicine, Vall d'Hebron University Hospital, Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron, 119-129, 08035, Barcelona, Spain
| | - Águeda Martínez-Barriocanal
- Group of Biomedical Research in Digestive Tract Tumors, CIBBIM-Nanomedicine, Vall d'Hebron University Hospital, Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron, 119-129, 08035, Barcelona, Spain.,Group of Molecular Oncology, IRBLleida, 25198, Lleida, Spain
| | - Estefanía Anguita
- Group of Biomedical Research in Digestive Tract Tumors, CIBBIM-Nanomedicine, Vall d'Hebron University Hospital, Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron, 119-129, 08035, Barcelona, Spain
| | - Rocío Nieto
- Group of Biomedical Research in Digestive Tract Tumors, CIBBIM-Nanomedicine, Vall d'Hebron University Hospital, Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron, 119-129, 08035, Barcelona, Spain
| | - Jing Li
- Group of Biomedical Research in Digestive Tract Tumors, CIBBIM-Nanomedicine, Vall d'Hebron University Hospital, Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron, 119-129, 08035, Barcelona, Spain
| | - Elia García-Vidal
- Group of Biomedical Research in Digestive Tract Tumors, CIBBIM-Nanomedicine, Vall d'Hebron University Hospital, Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron, 119-129, 08035, Barcelona, Spain
| | - Valentina Maggio
- Group of Biomedical Research in Digestive Tract Tumors, CIBBIM-Nanomedicine, Vall d'Hebron University Hospital, Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron, 119-129, 08035, Barcelona, Spain
| | - Paulo Rodrigues
- Group of Biomedical Research in Digestive Tract Tumors, CIBBIM-Nanomedicine, Vall d'Hebron University Hospital, Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron, 119-129, 08035, Barcelona, Spain
| | - Priscila Guimarães de Marcondes
- Group of Biomedical Research in Digestive Tract Tumors, CIBBIM-Nanomedicine, Vall d'Hebron University Hospital, Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron, 119-129, 08035, Barcelona, Spain
| | - Simo Schwartz
- Group of Drug Delivery and Targeting, CIBBIM-Nanomedicine, Vall d'Hebron University Hospital, Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron, 119-129, 08035, Barcelona, Spain.,CIBER de Bioingeniería, Biomateriales Y Nanomedicina (CIBER-BBN), Madrid, Spain
| | - Lauri A Aaltonen
- Department of Medical Genetics, Medicum, University of Helsinki, Biomedicum Helsinki, 00290, Helsinki, Finland
| | - Alex Sánchez
- Departament d'Estadísitica, Facultat de Biologia, Universitat de Barcelona, 08028, Barcelona, Spain
| | - John M Mariadason
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, 3084, Australia.,School of Cancer Medicine, La Trobe University, Melbourne, 3086, Australia
| | - Diego Arango
- Group of Biomedical Research in Digestive Tract Tumors, CIBBIM-Nanomedicine, Vall d'Hebron University Hospital, Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron, 119-129, 08035, Barcelona, Spain. .,Group of Molecular Oncology, IRBLleida, 25198, Lleida, Spain.
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10
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Ge A, Gao S, Liu Y, Zhang H, Wang X, Zhang L, Pang D, Zhao Y. Methylation of WT1, CA10 in peripheral blood leukocyte is associated with breast cancer risk: a case-control study. BMC Cancer 2020; 20:713. [PMID: 32736539 PMCID: PMC7393705 DOI: 10.1186/s12885-020-07183-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 07/15/2020] [Indexed: 12/24/2022] Open
Abstract
Background Studies have shown that abnormal changes of specific-gene DNA methylation in leukocytes may be associated with an elevated risk of cancer. However, associations between the methylation of the zinc-related genes, WT1 and CA10, and breast cancer risk remain unknown. Methods The methylation of WT1 and CA10 was analyzed by methylation-sensitive high-resolution-melting (MS-HRM) in a case-control study with female subjects (N = 959). Logistic regression was used to analyze the associations, and propensity score (PS) method was used to adjust confounders. Results The results showed that WT1 hypermethylation was associated with an increased risk of breast cancer, with an odds ratio (OR) of 3.07 [95% confidence interval (CI): 1.67–5.64, P < 0.01]. Subgroup analyses showed that WT1 hypermethylation was specifically associated with an elevated risk of luminal A subtype (OR = 2.62, 95% CI: 1.11–6.20, P = 0.03) and luminal B subtype (OR = 3.23, 95% CI: 1.34–7.80, P = 0.01). CA10 hypermethylation was associated with an increased risk of luminal B subtype (OR = 1.80, 95% CI: 1.09–2.98, P = 0.02). Conclusion The results of the present study suggest that the hypermethylation of WT1 methylation in leukocytes is significantly associated with an increased risk of breast cancer. The hypermethylation of WT1 is associated with an increased risk of luminal subtypes of breast cancer, and the hypermethylation of CA10 is associated with an increased risk of luminal B subtype of breast cancer.
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Affiliation(s)
- Anqi Ge
- Department of Epidemiology, School of Public Health, Harbin Medical University, 57 Baojian Street, Nangang District, Harbin, 150081, Heilongjiang Province, People's Republic of China
| | - Song Gao
- Department of Breast Surgery, the Tumor Hospital of Harbin Medical University, 150 Haping Street, Nangang District, Harbin, 150081, Heilongjiang Province, People's Republic of China
| | - Yupeng Liu
- Department of Epidemiology, School of Public Health, Harbin Medical University, 57 Baojian Street, Nangang District, Harbin, 150081, Heilongjiang Province, People's Republic of China
| | - Hui Zhang
- Department of Epidemiology, School of Public Health, Harbin Medical University, 57 Baojian Street, Nangang District, Harbin, 150081, Heilongjiang Province, People's Republic of China
| | - Xuan Wang
- Department of Epidemiology, School of Public Health, Harbin Medical University, 57 Baojian Street, Nangang District, Harbin, 150081, Heilongjiang Province, People's Republic of China
| | - Lei Zhang
- Department of Epidemiology, School of Public Health, Harbin Medical University, 57 Baojian Street, Nangang District, Harbin, 150081, Heilongjiang Province, People's Republic of China
| | - Da Pang
- Department of Breast Surgery, the Tumor Hospital of Harbin Medical University, 150 Haping Street, Nangang District, Harbin, 150081, Heilongjiang Province, People's Republic of China.
| | - Yashuang Zhao
- Department of Epidemiology, School of Public Health, Harbin Medical University, 57 Baojian Street, Nangang District, Harbin, 150081, Heilongjiang Province, People's Republic of China.
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11
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Carbonic anhydrases II, IX, and XII in Barrett’s esophagus and adenocarcinoma. Virchows Arch 2018; 473:567-575. [DOI: 10.1007/s00428-018-2424-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/30/2018] [Accepted: 07/22/2018] [Indexed: 12/14/2022]
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12
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Lee JY, Alexeyev M, Kozhukhar N, Pastukh V, White R, Stevens T. Carbonic anhydrase IX is a critical determinant of pulmonary microvascular endothelial cell pH regulation and angiogenesis during acidosis. Am J Physiol Lung Cell Mol Physiol 2018; 315:L41-L51. [PMID: 29631360 DOI: 10.1152/ajplung.00446.2017] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Carbonic anhydrase IX (CA IX) is highly expressed in rapidly proliferating and highly glycolytic cells, where it serves to enhance acid-regulatory capacity. Pulmonary microvascular endothelial cells (PMVECs) actively utilize aerobic glycolysis and acidify media, whereas pulmonary arterial endothelial cells (PAECs) primarily rely on oxidative phosphorylation and minimally change media pH. Therefore, we hypothesized that CA IX is critical to PMVEC angiogenesis because of its important role in regulating pH. To test this hypothesis, PMVECs and PAECs were isolated from Sprague-Dawley rats. CA IX knockout PMVECs were generated using the CRISPR-Cas9 technique. During serum-stimulated growth, mild acidosis (pH 6.8) did not affect cell counts of PMVECs, but it decreased PAEC cell number. Severe acidosis (pH 6.2) decreased cell counts of PMVECs and elicited an even more pronounced reduction of PAECs. PMVECs had a higher CA IX expression compared with PAECs. CA activity was higher in PMVECs compared with PAECs, and enzyme activity was dependent on the type IX isoform. Pharmacological inhibition and genetic ablation of CA IX caused profound dysregulation of extra- and intracellular pH in PMVECs. Matrigel assays revealed impaired angiogenesis of CA IX knockout PMVECs in acidosis. Lastly, pharmacological CA IX inhibition caused profound cell death in PMVECs, whereas genetic CA IX ablation had little effect on PMVEC cell death in acidosis. Thus CA IX controls PMVEC pH necessary for angiogenesis during acidosis. CA IX may contribute to lung vascular repair during acute lung injury that is accompanied by acidosis within the microenvironment.
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Affiliation(s)
- Ji Young Lee
- Department of Physiology and Cell Biology, University of South Alabama , Mobile, Alabama.,Department of Internal Medicine, University of South Alabama , Mobile, Alabama.,Division of Pulmonary and Critical Care Medicine, University of South Alabama , Mobile, Alabama.,Center for Lung Biology, University of South Alabama , Mobile, Alabama
| | - Mikhail Alexeyev
- Department of Physiology and Cell Biology, University of South Alabama , Mobile, Alabama.,Center for Lung Biology, University of South Alabama , Mobile, Alabama
| | - Natalya Kozhukhar
- Department of Physiology and Cell Biology, University of South Alabama , Mobile, Alabama.,Center for Lung Biology, University of South Alabama , Mobile, Alabama
| | - Viktoriya Pastukh
- Department of Physiology and Cell Biology, University of South Alabama , Mobile, Alabama.,Center for Lung Biology, University of South Alabama , Mobile, Alabama
| | - Roderica White
- Center for Healthy Communities, University of South Alabama , Mobile, Alabama
| | - Troy Stevens
- Department of Physiology and Cell Biology, University of South Alabama , Mobile, Alabama.,Department of Internal Medicine, University of South Alabama , Mobile, Alabama.,Center for Lung Biology, University of South Alabama , Mobile, Alabama
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13
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Choudhry H, Harris AL. Advances in Hypoxia-Inducible Factor Biology. Cell Metab 2018; 27:281-298. [PMID: 29129785 DOI: 10.1016/j.cmet.2017.10.005] [Citation(s) in RCA: 520] [Impact Index Per Article: 86.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 08/03/2017] [Accepted: 10/12/2017] [Indexed: 12/14/2022]
Abstract
Hypoxia-inducible factor (HIF), a central regulator for detecting and adapting to cellular oxygen levels, transcriptionally activates genes modulating oxygen homeostasis and metabolic activation. Beyond this, HIF influences many other processes. Hypoxia, in part through HIF-dependent mechanisms, influences epigenetic factors, including DNA methylation and histone acetylation, which modulate hypoxia-responsive gene expression in cells. Hypoxia profoundly affects expression of many noncoding RNAs classes that have clinicopathological implications in cancer. HIF can regulate noncoding RNAs production, while, conversely, noncoding RNAs can modulate HIF expression. There is recent evidence for crosstalk between circadian rhythms and hypoxia-induced signaling, suggesting involvement of molecular clocks in adaptation to fluxes in nutrient and oxygen sensing. HIF induces increased production of cellular vesicles facilitating intercellular communication at a distance-for example, promoting angiogenesis in hypoxic tumors. Understanding the complex networks underlying cellular and genomic regulation in response to hypoxia via HIF may identify novel and specific therapeutic targets.
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Affiliation(s)
- Hani Choudhry
- Department of Biochemistry, Cancer Metabolism and Epigenetic Unit, Faculty of Science, Cancer and Mutagenesis Unit, King Fahd Center for Medical Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Adrian L Harris
- Molecular Oncology Laboratories, Department of Oncology, University of Oxford, Weatherall Institute of Molecular Medicine, Oxford OX3 9DS, UK.
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14
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3'UTR polymorphisms of carbonic anhydrase IX determine the miR-34a targeting efficiency and prognosis of hepatocellular carcinoma. Sci Rep 2017; 7:4466. [PMID: 28667334 PMCID: PMC5493636 DOI: 10.1038/s41598-017-04732-3] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 05/19/2017] [Indexed: 12/26/2022] Open
Abstract
Carbonic anhydrase IX (CA9) expression level has been considered as a poor prognostic factor in hepatocellular carcinoma (HCC) patients. However, the judging criteria of CA9 level is hard to define for potential clinical applications. Unlike CA9 expression level, CA9 polymorphism is poorly documented in HCC. Here, we found that people carry A allele at CA9 rs1048638, a 3′UTR SNP, has higher risk of HCC. rs1048638-CA correlates with advanced stages, larger tumor sizes, more vascular invasion, and shorter survival of HCC patients. A allele at CA9 rs1048638 impairs miR-34a, a tumor suppressor miRNA in HCC, binding to CA9 3′UTR and desensitizes CA9 mRNA to miR-34a-dependent RNA degradation. CA9 expression levels were also correlated with miR-34a levels and rs1048638 genotypes in HCC patients. rs1048638 influences HCC risk and progression through effects on miR-34a-targeted CA9 expression in HCC. In conclusion, genetic variations of the CA9 3′UTR play important roles in regulating CA9 expression and cancer progression, which is a novel determinant and target for HCC metastasis and prognosis.
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15
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Chen HF, Wu KJ. Epigenetics, TET proteins, and hypoxia in epithelial-mesenchymal transition and tumorigenesis. Biomedicine (Taipei) 2016; 6:1. [PMID: 26869355 PMCID: PMC4751095 DOI: 10.7603/s40681-016-0001-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 01/11/2016] [Indexed: 12/19/2022] Open
Abstract
Hypoxia in tumors is primarily a pathophysiologic consequence of structurally and functionally disturbed microcirculation with inadequate supply of oxygen. Tumor hypoxia is strongly associated with tumor propagation, malignant progression, and resistance to therapy. Aberrant epigenetic regulation plays a crucial role in the process of hypoxia-driven malignant progression. Convert of 5-methylcytosine (5mC) to 5-hydroxymethylcytosine (5hmC) by ten-eleven translocation (TET) family enzymes plays important biological functions in embryonic stem cells, development, aging and disease. Recent reports showed that level of 5hmC and TET proteins was altered in various types of cancers. There is a strong correlation between loss of 5hmC and cancer development but research to date indicates that loss of TET activity is associated with the cancer phenotype but it is not clear whether TET proteins function as tumor suppressors or oncogenes. While loss of TET1 and TET2 expression is associated with solid cancers, implying a tumor suppressor role, TET1 exhibits a clear oncogenic role in the context of genomic rearrangements such as in MLL-fusion rearranged leukemia. Interestingly, hypoxia increases global 5hmC levels and upregulates TET1 expression in a HIF1α-dependent manner. Recently, hypoxia-induced TET1 has been demonstrated to play another important role for regulating hypoxia-responsive gene expression and epithelial-mesenchymal transition (EMT) by serving as a transcription co-activator. Furthermore, hypoxia-induced TET1 also regulates glucose metabolism and hypoxia-induced EMT through enhancing the expression of insulin induced gene 1 (INSIG1). The roles and mechanisms of action of 5hmC and TET proteins in ES cell biology and during embryonic development, as well as in cancer biology, will be the main focus in this review.
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Affiliation(s)
- Hsiao-Fan Chen
- Research Center for Tumor Medical Science and Graduate Inst. of Cancer Biology, China Medical University, 404, Taichung, Taiwan
| | - Kou-Juey Wu
- Research Center for Tumor Medical Science and Graduate Inst. of Cancer Biology, China Medical University, 404, Taichung, Taiwan.
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16
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Ramachandran S, Ient J, Göttgens EL, Krieg AJ, Hammond EM. Epigenetic Therapy for Solid Tumors: Highlighting the Impact of Tumor Hypoxia. Genes (Basel) 2015; 6:935-56. [PMID: 26426056 PMCID: PMC4690023 DOI: 10.3390/genes6040935] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 09/18/2015] [Accepted: 09/22/2015] [Indexed: 12/14/2022] Open
Abstract
In the last few decades, epigenetics has emerged as an exciting new field in development and disease, with a more recent focus towards cancer. Epigenetics has classically referred to heritable patterns of gene expression, primarily mediated through DNA methylation patterns. More recently, it has come to include the reversible chemical modification of histones and DNA that dictate gene expression patterns. Both the epigenetic up-regulation of oncogenes and downregulation of tumor suppressors have been shown to drive tumor development. Current clinical trials for cancer therapy include pharmacological inhibition of DNA methylation and histone deacetylation, with the aim of reversing these cancer-promoting epigenetic changes. However, the DNA methyltransferase and histone deacetylase inhibitors have met with less than promising results in the treatment of solid tumors. Regions of hypoxia are a common occurrence in solid tumors. Tumor hypoxia is associated with increased aggressiveness and therapy resistance, and importantly, hypoxic tumor cells have a distinct epigenetic profile. In this review, we provide a summary of the recent clinical trials using epigenetic drugs in solid tumors, discuss the hypoxia-induced epigenetic changes and highlight the importance of testing the epigenetic drugs for efficacy against the most aggressive hypoxic fraction of the tumor in future preclinical testing.
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Affiliation(s)
- Shaliny Ramachandran
- Cancer Research UK and Medical Research Council Oxford Institute for Radiation Oncology, Department of Oncology, The University of Oxford, Oxford OX3 7DQ, UK.
| | - Jonathan Ient
- Cancer Research UK and Medical Research Council Oxford Institute for Radiation Oncology, Department of Oncology, The University of Oxford, Oxford OX3 7DQ, UK.
| | - Eva-Leonne Göttgens
- Cancer Research UK and Medical Research Council Oxford Institute for Radiation Oncology, Department of Oncology, The University of Oxford, Oxford OX3 7DQ, UK.
| | - Adam J Krieg
- Department of Obstetrics and Gynecology, University of Kansas Medical Center, Kansas City, KS 66160, USA.
| | - Ester M Hammond
- Cancer Research UK and Medical Research Council Oxford Institute for Radiation Oncology, Department of Oncology, The University of Oxford, Oxford OX3 7DQ, UK.
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17
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Wang G, Cheng Z, Liu F, Zhang H, Li J, Li F. CREB is a key negative regulator of carbonic anhydrase IX (CA9) in gastric cancer. Cell Signal 2015; 27:1369-79. [DOI: 10.1016/j.cellsig.2015.03.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 03/14/2015] [Accepted: 03/29/2015] [Indexed: 12/11/2022]
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18
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Predicting outcome in patients under extracorporeal membrane oxygenation due to cardiogenic shock through dynamic change of lymphocytes and interleukins. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.ijcme.2014.11.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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19
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Membrane carbonic anhydrase IX expression and relapse risk in resected stage I-II non-small-cell lung cancer. J Thorac Oncol 2015; 9:675-84. [PMID: 24662455 DOI: 10.1097/jto.0000000000000148] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Adjuvant chemotherapy reduces recurrences of non-small-cell lung cancer (NSCLC). To determine which patients need adjuvant chemotherapy, we assessed factors associated with time to relapse (TTR). METHODS In 230 resected stage I-II NSCLCs, we correlated immunohistochemistry scores for factors associated with cell growth rate, growth regulation, hypoxia, cell survival, and cell death with TTR. RESULTS With a median follow-up of 82 months (1-158) for those alive and relapse free at last follow-up, median time to recurrence was not reached. The 2- and 5-year probabilities of maintaining freedom from recurrence were 80.7% (95% confidence interval, 75.3%, 86.4%) and 74.6% (95% confidence interval, 68.6%, 81.2%), respectively. TTR curves flattened at an apparent cure rate of 70%. In multicovariate Cox models, factors correlating with shorter TTR were membranous carbonic anhydrase IX (mCAIX) staining (any versus none, hazard ratio = 2.083, p = 0.023) and node stage (N1 versus N0, hazard ratio = 2.591, p = 0.002). mCAIX scores correlated positively with tumor size, grade, squamous histology, necrosis, mitoses, Ki67, p53, nuclear DNA methyltransferase 1, and cytoplasmic enhancer-of-split-and-hairy-related protein, and they correlated inversely with papillary histology, epidermal growth factor receptor mutation (trend), copper transporter-1, and cytoplasmic hypoxia-inducible factor-1α, vascular endothelial growth factor, DNA methyltransferase 1, and excision repair cross-complementing rodent repair deficiency, complementation group 1. CONCLUSION Nodal stage and mCAIX immunohistochemistry were the strongest independent predictors of shorter TTR in resected NSCLCs. mCAIX correlated with tumor size, markers of tumor proliferation and necrosis, and tumor genetic characteristics, and it paradoxically correlated inversely with the hypoxia markers, hypoxia-inducible factor-1α and vascular endothelial growth factor. Presence of mCAIX could help determine patients with high risk of recurrence who might require adjuvant chemotherapy.
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20
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Ilardi G, Zambrano N, Merolla F, Siano M, Varricchio S, Vecchione M, De Rosa G, Mascolo M, Staibano S. Histopathological determinants of tumor resistance: a special look to the immunohistochemical expression of carbonic anhydrase IX in human cancers. Curr Med Chem 2014; 21:1569-82. [PMID: 23992304 PMCID: PMC3979091 DOI: 10.2174/09298673113209990227] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 06/20/2013] [Accepted: 07/10/2013] [Indexed: 02/07/2023]
Abstract
Intrinsic and acquired drug resistance of tumor cells still causes the failure of treatment regimens in advanced
human cancers. It may be driven by intrinsic tumor cells features, or may also arise from micro environmental influences.
Hypoxia is a microenvironment feature associated with the aggressiveness and metastasizing ability of human solid cancers.
Hypoxic cancer cells overexpress Carbonic Anhydrase IX (CA IX). CA IX ensures a favorable tumor intracellular
pH, while contributing to stromal acidosis, which facilitates tumor invasion and metastasis. The overexpression of CA IX
is considered an epiphenomenon of the presence of hypoxic, aggressive tumor cells. Recently, a relationship between CA
IX overexpression and the cancer stem cells (CSCs) population has been hypothesized. CSCs are strictly regulated by tumor
hypoxia and drive a major non-mutational mechanism of cancer drug-resistance. We reviewed the current data concerning
the role of CA IX overexpression in human malignancies, extending such information to the expression of the
stem cells markers CD44 and nestin in solid cancers, to explore their relationship with the biological behavior of tumors.
CA IX is heavily expressed in advanced tumors. A positive trend of correlation between CA IX overexpression, tumor
stage/grade and poor outcome emerged. Moreover, stromal CA IX expression was associated with adverse events occurrence,
maybe signaling the direct action of CA IX in directing the mesenchymal changes that favor tumor invasion; in addition,
membranous/cytoplasmic co-overexpression of CA IX and stem cells markers were found in several aggressive
tumors. This suggests that CA IX targeting could indirectly deplete CSCs and counteract resistance of solid cancers in the
clinical setting.
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Affiliation(s)
| | | | | | | | | | | | | | | | - S Staibano
- Department of Advanced Biomedical Sciences, Pathology Section, School of Medicine and Surgery, University of Naples "Federico II", address: via S. Pansini, n.5, 80131, Naples, Italy.
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21
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Ivanova L, Zandberga E, Siliņa K, Kalniņa Z, Ābols A, Endzeliņš E, Vendina I, Romanchikova N, Hegmane A, Trapencieris P, Eglītis J, Linē A. Prognostic relevance of carbonic anhydrase IX expression is distinct in various subtypes of breast cancer and its silencing suppresses self-renewal capacity of breast cancer cells. Cancer Chemother Pharmacol 2014; 75:235-46. [PMID: 25422154 DOI: 10.1007/s00280-014-2635-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 11/14/2014] [Indexed: 11/26/2022]
Abstract
PURPOSE Carbonic anhydrase IX (CAIX) is a hypoxia-inducible enzyme with extracellular catalytic domain that is overexpressed in a variety of cancers including breast cancer and plays a crucial role in maintaining favourable intracellular pH and reducing extracellular pH. The purpose of the current study was to elucidate the prognostic significance of CAIX in the intrinsic subtypes of breast cancer and to characterise CAIX as a drug target in breast cancer. METHODS The prognostic significance of CAIX mRNA expression was interrogated in a cohort of 3,455 breast tumours by using an online tool, Kaplan-Meier plotter. The functional effects of stable CAIX depletion by shRNA in three breast cancer cell lines—MDA-MB-231, MCF7 and SKBR-3, representing basal-like, luminal A and HER2+ subtypes, respectively—were studied by proliferation, invasion, clonal spheroid formation and chemosensitivity assays under normoxia and hypoxia. Finally, the effect of pharmacological CA inhibition alone or in the combination with doxorubicin on self-renewal was assessed by spheroid-forming assay. RESULTS High CAIX mRNA expression was significantly associated with poor survival in patients with basal-like, luminal B and triple-negative breast cancer, but not luminal A and HER+ subtypes. Silencing of CAIX expression had no significant effect on the cell proliferation or viability upon treatment with doxorubicin in any of the cell lines studied, while it inhibited spheroid formation in hypoxic conditions. Furthermore, pharmacological inhibition of CAs using acetazolamide had a synergistic effect with doxorubicin on decreasing the spheroid-forming efficiency in MDA-MB-231 cells. CONCLUSIONS Inhibition of CAIX reduces the self-renewal capacity of breast cancer cells, and the combination of doxorubicin and CAIX inhibition is an attractive therapeutic strategy in basal-like and triple-negative breast cancer, which warrants further investigations.
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Affiliation(s)
- Lāsma Ivanova
- Latvian Biomedical Research and Study Centre, Ratsupites Str 1, Riga, 1067, Latvia
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22
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Sung HY, Ju W, Ahn JH. DNA hypomethylation-mediated overexpression of carbonic anhydrase 9 induces an aggressive phenotype in ovarian cancer cells. Yonsei Med J 2014; 55:1656-63. [PMID: 25323905 PMCID: PMC4205708 DOI: 10.3349/ymj.2014.55.6.1656] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
PURPOSE Both genetic and epigenetic alterations can lead to abnormal expression of metastasis-regulating genes in tumor cells. Recent studies suggest that aberrant epigenetic alterations, followed by differential gene expression, leads to an aggressive cancer cell phenotype. We examined epigenetically regulated genes that are involved in ovarian cancer metastasis. MATERIALS AND METHODS We developed SK-OV-3 human ovarian carcinoma cell xenografts in mice. We compared the mRNA expression and DNA methylation profiles of metastatic tissues to those of the original SK-OV-3 cell line. RESULTS Metastatic implants showed increased mRNA expression of the carbonic anhydrase 9 (CA9) gene and hypomethylation at CpG sites in the CA9 promoter. Treatment of wild-type SK-OV-3 cells with the DNA methyltransferase inhibitor 5-aza-2'-deoxycytidine reduced methylation of the CA9 promoter and increased CA9 mRNA expression. Eight CpGs, which were located at positions -197, -74, -19, -6, +4, +13, +40, and +86, relative to the transcription start site, were hypomethylated in metastatic tumor implants, compared to that of wild-type SK-OV-3. Overexpression of CA9 induced an aggressive phenotype, including increased invasiveness and migration, in SK-OV-3 cells. CONCLUSION Alterations in the DNA methylation profile of the CA9 promoter were correlated with a more aggressive phenotype in ovarian cancer cells.
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Affiliation(s)
- Hye Youn Sung
- Department of Biochemistry, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Woong Ju
- Department of Obstetrics and Gynecology, School of Medicine, Ewha Womans University, Seoul, Korea.
| | - Jung-Hyuck Ahn
- Department of Biochemistry, School of Medicine, Ewha Womans University, Seoul, Korea.
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Li Z, Xie J, Wu J, Li W, Nie L, Sun X, Tang A, Li X, Liu R, Mei H, Wang F, Wang Z, Gui Y, Cai Z. CMTM3 inhibits human testicular cancer cell growth through inducing cell-cycle arrest and apoptosis. PLoS One 2014; 9:e88965. [PMID: 24586462 PMCID: PMC3938458 DOI: 10.1371/journal.pone.0088965] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Accepted: 01/16/2014] [Indexed: 01/05/2023] Open
Abstract
Human CMTM3 has been proposed as a putative tumor suppressor gene. The loss of CMTM3 has been found in several carcinomas. However, the regulation of CMTM3 expression and its function in tumor progression remain largely unknown. Here, we investigated the regulation of CMTM3 expression, function and molecular mechanism in human testicular cancer cells. CMTM3 was frequently downregulated or silenced in testicular cancer cell lines and tumor tissues but highly expressed in normal testis tissues. The re-expression of CMTM3 significantly suppressed the colony formation, proliferation, and migration capacity of testicular cancer cells by inducing a G2 cell cycle arrest and apoptosis. Moreover, the re-expression of CMTM3 activated the transcription of p53, induced p53 accumulation, up-regulated the expression of p21, and increased the cleavage of caspase 9, 8, 3, and PARP. The downregulation of CMTM3 in clinical tumor tissues was associated with the methylation of a single CpG site located within the Sp1/Sp3-responsive region of the core promoter. These results indicate that CMTM3 can function as tumor suppressor through the induction of a G2 cell cycle arrest and apoptosis. CMTM3 is thus involved in testicular cancer pathogenesis, and it is frequently at least partially silenced by the methylation of a single, specific CpG site in tumor tissues.
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Affiliation(s)
- Zesong Li
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
- * E-mail: (ZL); (ZC)
| | - Jun Xie
- Guandong Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Shenzhen PKU-HKUST Medical Center, Shenzhen, China
- Department of Clinical Laboratory, Peking University Shenzhen Hospital, Shenzhen, China
| | - Jianting Wu
- Guandong Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Shenzhen PKU-HKUST Medical Center, Shenzhen, China
| | - Wenjie Li
- Department of Urology, Suzhou municipal Hospital, Suzhou, Anhui, China
| | - Liping Nie
- Department of Clinical Laboratory, Peking University Shenzhen Hospital, Shenzhen, China
| | - Xiaojuan Sun
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Aifa Tang
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Xianxin Li
- Department of Clinical Laboratory, Peking University Shenzhen Hospital, Shenzhen, China
| | - Ren Liu
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Hongbing Mei
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Feng Wang
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Zhiping Wang
- Department of Urology, The Second Hospital of Lanzhou University, Lanzhou, China
| | - Yaoting Gui
- Guandong Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Shenzhen PKU-HKUST Medical Center, Shenzhen, China
| | - Zhiming Cai
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
- * E-mail: (ZL); (ZC)
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Robinson CM, Ohh M. The multifaceted von Hippel-Lindau tumour suppressor protein. FEBS Lett 2014; 588:2704-11. [PMID: 24583008 DOI: 10.1016/j.febslet.2014.02.026] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 02/14/2014] [Accepted: 02/17/2014] [Indexed: 11/26/2022]
Abstract
Loss of von Hippel-Lindau protein (pVHL) is known to contribute to the initiation and progression of tumours associated with VHL disease as well as certain sporadic tumours including clear cell renal cell carcinoma (ccRCC). The VHL gene was first identified and cloned over 20 years ago and our understanding of its functions and effects has significantly increased since then. The best-known function of pVHL is its role in promoting the degradation of hypoxia-inducible factor α subunit (HIFα) as part of an E3 ubiquitin ligase complex. HIF stabilisation and transcriptional activation are also associated with various epigenetic alterations, indicating a potential role for VHL loss with changes in the epigenome. This review will highlight current knowledge regarding pVHL as well as discuss potentially novel roles of pVHL and how these may impact on cancer progression.
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Affiliation(s)
- Claire M Robinson
- Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Michael Ohh
- Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada; Department of Biochemistry, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
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Xu Q, Sun LP, Wang BG, Liu JW, Li P, He CY, Yuan Y. The co-expression of functional gastric proteins in dynamic gastric diseases and its clinical significance. BMC Clin Pathol 2013; 13:21. [PMID: 23937908 PMCID: PMC3750757 DOI: 10.1186/1472-6890-13-21] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 07/26/2013] [Indexed: 12/26/2022] Open
Abstract
Background Pepsinogen C (PGC) and mucin1 (MUC1) are important physiologically functional gastric proteins; Mucin2 (MUC2) is an “ectopic” functional protein in intestinal metaplasia of gastric mucosa. We analyzed the co-expression of the above-mentioned three proteins in dynamic gastric diseases {superficial gastritis (SG)-atrophic gastritis (AG)--gastric cancer (GC)} as well as different histological types of gastric cancer in order to find molecular phenotypes of gastric cancer and precancerous disease and further explore the potential co-function of PGC, MUC1 and MUC2 in the occurrence and development of gastric cancer. Methods The SG-AG-GC sequence was 57-57-70 cases in this case–control study, respectively. Different histological types of GC were 28 cases of highly and moderately differentiated aden ocarcinoma (HMDA)、30 of poorly differentiated adenocarcinoma (PDA) and 12 of mucinous adenocarcinoma (MA) or signet ring cell carcinoma (SRCC). PGC, MUC1 and MUC2 expression in situ were detected in all 184 cases using immunohistochemistry. Results Both PGC and MUC1 had a significantly decreased expression in GC than in SG and AG (P < 0.0001 and P < 0.01, respectively); While MUC2 had a significant increased expression in AG than in SG and GC (P < 0.0001). Seven phenotypes of PGC, MUC1 and MUC2 co-expression were found in which PGC+/MUC1+/MUC2- phenotype took 94.7%(54/57) in SG group; PGC+/MUC1+/MUC2+ and PGC-/MUC1+/MUC2+ phenotype took 43.9% (25/57) and 52.6% (30/57) in AG; the phenotypes in GC group appeared variable; extraordinarily, PGC-/MUC1-/MUC2+ phenotype took 100% (6/6) in MA or SRCC group and had a statistical significance compared with others (P < 0.05). Conclusions Phenotypes of PGC, MUC1 and MUC2 co-expression in dynamic gastric diseases are variable. In SG group it always showed PGC+/MUC1+/MUC2- phenotype and AG group showed two phenotypes (PGC+/MUC1+/MUC2+ and PGC-/MUC1+/MUC2+); the phenotypes in GC group appeared variable but the phenotype of PGC-/MUC1-/MUC2+ may be a predictive biomarker for diagnosing MA or SRCC, or distinguishing histological MA or SRCC from tubular adenocarcinoma accompanied by mucinous secretion or signet ring cell scattered distribution.
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Affiliation(s)
- Qian Xu
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Affiliated Hospital of China Medical University, North Nanjing Street 155#, Heping District, Shenyang 110001, People's Republic of China.
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26
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Tanaka T, Nakamura J, Kitajima Y, Kai K, Miyake S, Hiraki M, Ide T, Koga Y, Noshiro H. Loss of trefoil factor 1 is regulated by DNA methylation and is an independent predictive factor for poor survival in advanced gastric cancer. Int J Oncol 2013; 42:894-902. [PMID: 23291975 DOI: 10.3892/ijo.2013.1759] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 11/30/2012] [Indexed: 02/05/2023] Open
Abstract
Trefoil factor 1 (TFF1) is considered to be a tumor suppressor gene in gastric cancer. However, the role of TFF1 expression and its regulation in gastric cancer patients remain unclear. The aims of this study were to clarify the clinical significance of TFF1 and to determine its regulatory mechanisms. We assessed the immunohistochemical expression of TFF1 in 182 gastric cancer patients and examined whether or not TFF1 is associated with the clinicopathological factors and patient survival. In vitro study using TFF1 knockdown gastric cancer cells evaluated the role of TFF1 in cancer invasion. Bisulfite sequencing was performed to assess DNA methylation of TFF1 in cells and resected tissues. Patients with low expression of TFF1 showed a significantly deeper invasion of the tumor than those with high expression (p=0.037). Low expression of TFF1 was also associated with a poor survival (p=0.029) in 108 patients who were treated by surgery alone. Both TFF1 expression and lymph node metastasis are independent predictive factors for disease-specific survival in a multivariate analysis. In an in vitro study, invasive power of the cells was significantly increased in the TFF1‑deficient cells compared with the control cells. Bisulfate sequencing showed that TFF1 expression is strongly dependent on DNA methylation in both gastric cancer cells and tissues. Interestingly, methylation status of two specific CpG sites, which are located close to a TATA box and hypoxia response element (HRE), determined the TFF1 expression in the resected tissues. TFF1 expression is silenced by DNA methylation and is associated with tumor invasion and a poor survival in gastric cancer patients. The expression and̸or methylation status of TFF1 may, therefore, serve as a useful biomarker for predicting survival in patients with advanced gastric cancer.
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Affiliation(s)
- Tomokazu Tanaka
- Department of Surgery, Saga University Faculty of Medicine, Saga 849-8501, Japan
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27
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Cheng ASL, Li MS, Kang W, Cheng VY, Chou JL, Lau SS, Go MY, Lee CC, Ling TK, Ng EK, Yu J, Huang TH, To KF, Chan MW, Sung JJY, Chan FKL. Helicobacter pylori causes epigenetic dysregulation of FOXD3 to promote gastric carcinogenesis. Gastroenterology 2013; 144:122-133.e9. [PMID: 23058321 DOI: 10.1053/j.gastro.2012.10.002] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2012] [Revised: 08/25/2012] [Accepted: 10/03/2012] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Deregulation of forkhead box (Fox) proteins, an evolutionarily conserved family of transcriptional regulators, leads to tumorigenesis. Little is known about their regulation or functions in the pathogenesis of gastric cancer. Promoter hypermethylation occurs during Helicobacter pylori-induced gastritis. We investigated whether the deregulated genes contribute to gastric tumorigenesis. METHODS We used integrative genome-wide scans to identify concomitant hypermethylated genes in mice infected with H pylori and human gastric cancer samples. We also analyzed epigenetic gene silencing in gastric tissues from patients with H pylori infection and gastritis, intestinal metaplasia, gastric tumors, or without disease (controls). Target genes were identified by chromatin immunoprecipitation microarrays and expression and luciferase reporter analyses. RESULTS Methylation profile analyses identified the promoter of FOXD3 as the only genomic region with increased methylation in mice and humans during progression of H pylori-associated gastric tumors. FOXD3 methylation also correlated with shorter survival times of patients with gastric cancer. Genome demethylation reactivated FOXD3 expression in gastric cancer cell lines. Transgenic overexpression of FOXD3 significantly inhibited gastric cancer cell proliferation and invasion, and reduced growth of xenograft tumors in mice, at least partially, by promoting tumor cell apoptosis. FOXD3 bound directly to the promoters of, and activated transcription of, genes encoding the cell death regulators CYFIP2 and RARB. Levels of FOXD3, CYFIP2, and RARB messenger RNAs were reduced in human gastric tumor samples, compared with control tissues. CONCLUSIONS FOXD3-mediated transcriptional control of tumor suppressors is deregulated by H pylori infection-induced hypermethylation; this could perturb the balance between cell death and survival. These findings identify a pathway by which epigenetic changes affect gastric tumor suppression.
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Affiliation(s)
- Alfred S L Cheng
- Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong SAR, China.
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Miller S, Bhasin N, Urrego H, Moroz K, Rowan BG, Ramayya MS, Makridakis NM. Genetic and epigenetic alterations of steroidogenic factor‑1 in ovarian tumors. Int J Oncol 2012; 42:627-34. [PMID: 23291911 PMCID: PMC3583749 DOI: 10.3892/ijo.2012.1758] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Accepted: 11/12/2012] [Indexed: 12/30/2022] Open
Abstract
Steroidogenic factor-1 (SF-1), the product of the NR5A1 gene, is an essential transcription factor that is known to regulate steroidogenesis in ovarian epithelia, including the synthesis of progesterone, a suppressor of ovarian cancer. Expression of the SF-1 protein, a potential ovarian tumor suppressor, has been demonstrated in normal OSE cells, but is lost in most ovarian tumors and ovarian tumor cell lines. We examined loss of heterozygosity (LOH) and promoter methylation as potential mechanisms that may explain the loss of SF-1 protein in ovarian tumor tissues. Genotyping of three NR5A1 SNPs in matched tumor/normal tissues identified LOH in 16/36 (44%) of the ovarian tumors successfully analyzed, and somatic mutations (gain of allele) in 10% of the tumors. Furthermore, a methylation-sensitive restriction enzyme method was used to demonstrate statistically significant (p<0.0001) increase in the frequency of NR5A1 gene methylation in ovarian tumors (36/46; 78%) versus normal ovaries (1/11; 9%). These data suggest that the SF-1 encoding gene exhibits frequent genetic (LOH/base substitution) and epigenetic (methylation) somatic alterations in ovarian tumors. These data also present novel molecular mechanisms that may explain the loss of SF-1 protein in ovarian tumors, and its potential role in ovarian carcinogenesis.
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Affiliation(s)
- Sarah Miller
- Ohio Department of Health, Columbus, OH 43215, USA
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Kim BR, Shin HJ, Kim JY, Byun HJ, Lee JH, Sung YK, Rho SB. Dickkopf-1 (DKK-1) interrupts FAK/PI3K/mTOR pathway by interaction of carbonic anhydrase IX (CA9) in tumorigenesis. Cell Signal 2012; 24:1406-13. [PMID: 22430125 DOI: 10.1016/j.cellsig.2012.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Accepted: 03/04/2012] [Indexed: 01/01/2023]
Abstract
Recently, we found that carbonic anhydrase IX (CA9) modulates tumor-associated cell migration and invasion, and then identified dickkopf-1 (DKK-1) as a novel CA9-interacting protein. In this study, we have determined the binding regions that are required for interaction between CA9 and DKK-1 through in vitro and in vivo. The N-terminal domain of CA9 is participated to interact with the Val(60)-Tyr(168) site of DKK-1. We also observed that DKK-1 inhibits endothelial cell angiogenesis of CA9 in tumorigenesis. Furthermore, induction of CA9-mediated mTOR phosphorylation and angiogenesis was significantly inhibited by over-expression of DKK-1. Taken together, these findings identify DKK-1 as a potential factor in the regulation of CA9 cellular homeostasis and also suggest a new possible role for DKK1-1 in tumorigenesis.
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Affiliation(s)
- Boh-Ram Kim
- Research Institute and Hospital, National Cancer Center, Ilsandong-gu, Goyang-si, Gyeonggi-do, Republic of Korea
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Wang T, Chen M, Liu L, Cheng H, Yan YE, Feng YH, Wang H. Nicotine induced CpG methylation of Pax6 binding motif in StAR promoter reduces the gene expression and cortisol production. Toxicol Appl Pharmacol 2011; 257:328-37. [PMID: 21971485 DOI: 10.1016/j.taap.2011.09.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 09/15/2011] [Accepted: 09/16/2011] [Indexed: 12/18/2022]
Abstract
Steroidogenic acute regulatory protein (StAR) mediates the rate-limiting step in the synthesis of steroid hormones, essential to fetal development. We have reported that the StAR expression in fetal adrenal is inhibited in a rat model of nicotine-induced intrauterine growth retardation (IUGR). Here using primary human fetal adrenal cortex (pHFAC) cells and a human fetal adrenal cell line NCI-H295A, we show that nicotine inhibits StAR expression and cortisol production in a dose- and time-dependent manner, and prolongs the inhibitory effect on cells proliferating over 5 passages after termination of nicotine treatment. Methylation detection within the StAR promoter region uncovers a single site CpG methylation at nt -377 that is sensitive to nicotine treatment. Nicotine-induced alterations in frequency of this point methylation correlates well with the levels of StAR expression, suggesting an important role of the single site in regulating StAR expression. Further studies using bioinformatics analysis and siRNA approach reveal that the single CpG site is part of the Pax6 binding motif (CGCCTGA) in the StAR promoter. The luciferase activity assays validate that Pax6 increases StAR gene expression by binding to the glucagon G3-like motif (CGCCTGA) and methylation of this site blocks Pax6 binding and thus suppresses StAR expression. These data identify a nicotine-sensitive CpG site at the Pax6 binding motif in the StAR promoter that may play a central role in regulating StAR expression. The results suggest an epigenetic mechanism that may explain how nicotine contributes to onset of adult diseases or disorders such as metabolic syndrome via fetal programming.
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Affiliation(s)
- Tingting Wang
- Department of Pharmacology, Basic Medical School of Wuhan University, Wuhan 430071, China
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Choi J, Cho MY, Jung SY, Jan KM, Kim HS. CpG Island Methylation According to the Histologic Patterns of Early Gastric Adenocarcinoma. KOREAN JOURNAL OF PATHOLOGY 2011. [DOI: 10.4132/koreanjpathol.2011.45.5.469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Junjeong Choi
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Mee-Yon Cho
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - So-Young Jung
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Khalilullah Mia Jan
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Hyun Soo Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
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