1
|
Shakartalla SB, Ashmawy NS, Semreen MH, Fayed B, Al Shareef ZM, Jayakumar MN, Ibrahim S, Rahmani M, Hamdy R, Soliman SSM. 1H-NMR metabolomics analysis identifies hypoxanthine as a novel metastasis-associated metabolite in breast cancer. Sci Rep 2024; 14:253. [PMID: 38167685 PMCID: PMC10762038 DOI: 10.1038/s41598-023-50866-y] [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: 09/23/2023] [Accepted: 12/27/2023] [Indexed: 01/05/2024] Open
Abstract
Breast cancer is one of the leading causes of death in females, mainly because of metastasis. Oncometabolites, produced via metabolic reprogramming, can influence metastatic signaling cascades. Accordingly, and based on our previous results, we propose that metabolites from highly metastatic breast cancer cells behave differently from less-metastatic cells and may play a significant role in metastasis. For instance, we aim to identify these metabolites and their role in breast cancer metastasis. Less metastatic cells (MCF-7) were treated with metabolites secreted from highly metastatic cells (MDA-MB-231) and the gene expression of three epithelial-to-mesenchymal transition (EMT) markers including E-cadherin, N-cadherin and vimentin were examined. Some metabolites secreted from MDA-MB-231 cells significantly induced EMT activity. Specifically, hypoxanthine demonstrated a significant EMT effect and increased the migration and invasion effects of MCF-7 cells through a hypoxia-associated mechanism. Hypoxanthine exhibited pro-angiogenic effects via increasing the VEGF and PDGF gene expression and affected lipid metabolism by increasing the gene expression of PCSK-9. Notably, knockdown of purine nucleoside phosphorylase, a gene encoding for an important enzyme in the biosynthesis of hypoxanthine, and inhibition of hypoxanthine uptake caused a significant decrease in hypoxanthine-associated EMT effects. Collectively for the first time, hypoxanthine was identified as a novel metastasis-associated metabolite in breast cancer cells and represents a promising target for diagnosis and therapy.
Collapse
Affiliation(s)
- Sarra B Shakartalla
- Research Institute for Medical and Health Sciences, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates
- College of Medicine, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates
- Faculty of Pharmacy, University of Gezira, P.O. Box. 21111, Wadmedani, Sudan
| | - Naglaa S Ashmawy
- Research Institute for Medical and Health Sciences, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates
- Department of Pharmaceutical Sciences, College of Pharmacy, Gulf Medical University, P.O. Box 4184, Ajman, United Arab Emirates
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, P.O. Box 11566, Cairo, Egypt
| | - Mohammad H Semreen
- Research Institute for Medical and Health Sciences, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates
- Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates
| | - Bahgat Fayed
- Research Institute for Medical and Health Sciences, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates
- Chemistry of Natural and Microbial Product Department, National Research Centre, P.O. Box 12622, Cairo, Egypt
| | - Zainab M Al Shareef
- College of Medicine, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates
| | - Manju N Jayakumar
- Research Institute for Medical and Health Sciences, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates
| | - Saleh Ibrahim
- Research Institute for Medical and Health Sciences, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates
- Center for Biotechnology, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Mohamed Rahmani
- Research Institute for Medical and Health Sciences, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates
- Center for Biotechnology, Khalifa University, Abu Dhabi, United Arab Emirates
- College of Medicine and Health Sciences, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Rania Hamdy
- Research Institute for Medical and Health Sciences, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates
- Faculty of Pharmacy, Zagazig University, P.O. Box 44519, Zagazig, Egypt
| | - Sameh S M Soliman
- Research Institute for Medical and Health Sciences, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
- Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
| |
Collapse
|
2
|
Kim M, Chang JY, Lee DW, Kim YR, Son DJ, Yun J, Jung YS, Lee DH, Han S, Hong JT. Chitinase 3 like 1 deficiency ameliorates lipopolysaccharide-induced acute liver injury by inhibition of M2 macrophage polarization. Mol Immunol 2023; 156:98-110. [PMID: 36921490 DOI: 10.1016/j.molimm.2023.02.012] [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: 12/13/2022] [Revised: 01/15/2023] [Accepted: 02/26/2023] [Indexed: 03/17/2023]
Abstract
Chitinase 3-like-1 protein (CHI3L1) is involved in various infectious diseases, especially sepsis. Aberrant CHI3L1 expression potentially plays a critical role in chronic inflammation because a considerable number of macrophages are associated with immune/inflammatory diseases. In this study, we examined the effect of CHI3L1 on hepatic sepsis injury using a lipopolysaccharide (LPS)-induced model. LPS-treated CHI3L1 knockout (KO) mice exhibited a higher survival rate than LPS-treated CHI3L1 wild-type (WT) mice. In addition, hepatic injury-related enzyme levels (aspartate transaminase, alanine transaminase, and lactate dehydrogenase) decreased in CHI3L1 KO mice sera, suggesting attenuated LPS-induced septic liver damage in CHI3L1 KO mice. A greater reduction in the mRNA and protein expressions of M2 polarization markers, such as MRC1, ARG1, IL-10, and IL-4, was observed in LPS-induced CHI3L1 KO mice livers than in LPS-induced WT mice livers. Nonetheless, no change in the mRNA and protein expressions of M1 polarization markers, such as INOS, CD86, TNF-α, and IL6, was noted in LPS-induced CHI3L1 KO mice livers compared with those in LPS-induced WT and KO mice. Similar to the in vivo scenario, liver CHI3L1 depletion in LPS-treated HEP3B cells significantly decreased M2 polarization marker protein expression. However, M1 polarization marker protein expression did not differ significantly. These results suggest that CHI3L1 depletion decreases M2 macrophage polarization, and this effect is potentially associated with the alleviation of liver sepsis in CHI3L1 KO mice.
Collapse
Affiliation(s)
- Minji Kim
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-31, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 361-951, Republic of Korea
| | - Ju Young Chang
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-31, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 361-951, Republic of Korea
| | - Dong Won Lee
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-31, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 361-951, Republic of Korea
| | - Yu Ri Kim
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-31, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 361-951, Republic of Korea
| | - Dong Ju Son
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-31, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 361-951, Republic of Korea
| | - Jaesuk Yun
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-31, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 361-951, Republic of Korea
| | - Young Suk Jung
- College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Dong Hun Lee
- Department of Biological Sciences, College of Natural Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Sangbae Han
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-31, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 361-951, Republic of Korea
| | - Jin Tae Hong
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro 194-31, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 361-951, Republic of Korea.
| |
Collapse
|
3
|
Wang J, Hu Y, Liu P, Xu X. Xanthine oxidoreductase mediates genotoxic drug-induced autophagy and apoptosis resistance by uric acid accumulation and TGF-β-activated kinase 1 (TAK1) activation. FASEB J 2023; 37:e22723. [PMID: 36583708 DOI: 10.1096/fj.202201436r] [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: 09/05/2022] [Revised: 11/24/2022] [Accepted: 12/08/2022] [Indexed: 12/31/2022]
Abstract
Autophagy is a highly conserved cellular process that profoundly impacts the efficacy of genotoxic chemotherapeutic drugs. TGF-β-activated kinase 1 (TAK1) is a serine/threonine kinase that activates several signaling pathways involved in inducing autophagy and suppressing cell death. Xanthine oxidoreductase (XOR) is a rate-limiting enzyme that converts hypoxanthine to xanthine, and xanthine to uric acid and hydrogen peroxide in the purine catabolism pathway. Recent studies showed that uric acid can bind to TAK1 and prolong its activation. We hypothesized that genotoxic drugs may induce autophagy and apoptosis resistance by activating TAK1 through XOR-generated uric acid. Here, we report that gemcitabine and 5-fluorouracil (5-FU), two genotoxic drugs, induced autophagy in HeLa and HT-29 cells by activating TAK1 and its two downstream kinases, AMP-activated kinase (AMPK) and c-Jun terminal kinase (JNK). XOR knockdown and the XOR inhibitor allopurinol blocked gemcitabine-induced TAK1, JNK, AMPK, and Unc51-like kinase 1 (ULK1)S555 phosphorylation and gemcitabine-induced autophagy. Inhibition of the ATM-Chk pathway, which inhibits genotoxic drug-induced uric acid production, blocked gemcitabine-induced autophagy by inhibiting TAK1 activation. Exogenous uric acid in its salt form, monosodium urate (MSU), induced autophagy by activating TAK1 and its downstream kinases JNK and AMPK. Gene knockdown or the inhibitors of these kinases blocked gemcitabine- and MSU-induced autophagy. Inhibition of autophagy by allopurinol, chloroquine, and 5Z-7-oxozeaenol (5Z), a TAK1-specific inhibitor, enhanced gemcitabine-induced apoptosis. Our study uncovers a previously unrecognized role of XOR in regulating genotoxic drug-induced autophagy and apoptosis and has implications for designing novel therapeutic strategies for cancer treatment.
Collapse
Affiliation(s)
- Jingxiang Wang
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Yanhua Hu
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Penggang Liu
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Xiulong Xu
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China
| |
Collapse
|
4
|
Chen MM, Meng LH. The double faced role of xanthine oxidoreductase in cancer. Acta Pharmacol Sin 2022; 43:1623-1632. [PMID: 34811515 PMCID: PMC9253144 DOI: 10.1038/s41401-021-00800-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/19/2021] [Indexed: 01/02/2023] Open
Abstract
Xanthine oxidoreductase (XOR) is a critical, rate-limiting enzyme that controls the last two steps of purine catabolism by converting hypoxanthine to xanthine and xanthine to uric acid. It also produces reactive oxygen species (ROS) during the catalytic process. The enzyme is generally recognized as a drug target for the therapy of gout and hyperuricemia. The catalytic products uric acid and ROS act as antioxidants or oxidants, respectively, and are involved in pro/anti-inflammatory actions, which are associated with various disease manifestations, including metabolic syndrome, ischemia reperfusion injury, cardiovascular disorders, and cancer. Recently, extensive efforts have been devoted to understanding the paradoxical roles of XOR in tumor promotion. Here, we summarize the expression of XOR in different types of cancer and decipher the dual roles of XOR in cancer by its enzymatic or nonenzymatic activity to provide an updated understanding of the mechanistic function of XOR in cancer. We also discuss the potential to modulate XOR in cancer therapy.
Collapse
Affiliation(s)
- Man-man Chen
- grid.9227.e0000000119573309Division of Anti-tumor Pharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203 China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Ling-hua Meng
- grid.9227.e0000000119573309Division of Anti-tumor Pharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203 China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, Beijing, 100049 China
| |
Collapse
|
5
|
Xie LY, Huang HY, Fang T, Liang JY, Hao YL, Zhang XJ, Xie YX, Wang C, Tan YH, Zeng L. A Prognostic Survival Model of Pancreatic Adenocarcinoma Based on Metabolism-Related Gene Expression. Front Genet 2022; 13:804190. [PMID: 35664305 PMCID: PMC9158121 DOI: 10.3389/fgene.2022.804190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/22/2022] [Indexed: 11/13/2022] Open
Abstract
Accurately predicting the survival prospects of patients suffering from pancreatic adenocarcinoma (PAAD) is challenging. In this study, we analyzed RNA matrices of 182 subjects with PAAD based on public datasets obtained from The Cancer Genome Atlas (TCGA) as training datasets and those of 63 subjects obtained from the Gene Expression Omnibus (GEO) database as the validation dataset. Genes regulating the metabolism of PAAD cells correlated with survival were identified. Furthermore, LASSO Cox regression analyses were conducted to identify six genes (XDH, MBOAT2, PTGES, AK4, PAICS, and CKB) to create a metabolic risk score. The proposed scoring framework attained the robust predictive performance, with 2-year survival areas under the curve (AUCs) of 0.61 in the training cohort and 0.66 in the validation cohort. Compared with the subjects in the low-risk cohort, subjects in the high-risk training cohort presented a worse survival outcome. The metabolic risk score increased the accuracy of survival prediction in patients suffering from PAAD.
Collapse
Affiliation(s)
- Lin-Ying Xie
- Bethune Institute of Epigenetic Medicine, The First Hospital of Jilin University, Changchun, China
| | - Han-Ying Huang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Tian Fang
- Cancer Center, The First Hospital of Jilin University, Changchun, China
| | - Jia-Ying Liang
- Cancer Center, The First Hospital of Jilin University, Changchun, China
| | - Yu-Lei Hao
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, China
| | - Xue-Jiao Zhang
- Department of Endocrinology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Yi-Xin Xie
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Changchun, China
| | - Chang Wang
- Cancer Center, The First Hospital of Jilin University, Changchun, China
| | - Ye-Hui Tan
- Cancer Center, The First Hospital of Jilin University, Changchun, China
| | - Lei Zeng
- Bethune Institute of Epigenetic Medicine, The First Hospital of Jilin University, Changchun, China
| |
Collapse
|
6
|
The Achilles' heel of cancer: targeting tumors via lysosome-induced immunogenic cell death. Cell Death Dis 2022; 13:509. [PMID: 35637197 PMCID: PMC9151667 DOI: 10.1038/s41419-022-04912-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 03/10/2022] [Accepted: 05/04/2022] [Indexed: 12/14/2022]
Abstract
Interest in the lysosome's potential role in anticancer therapies has recently been appreciated in the field of immuno-oncology. Targeting lysosomes triggers apoptotic pathways, inhibits cytoprotective autophagy, and activates a unique form of apoptosis known as immunogenic cell death (ICD). This mechanism stimulates a local and systemic immune response against dead-cell antigens. Stressors that can lead to ICD include an abundance of ROS which induce lysosome membrane permeability (LMP). Dying cells express markers that activate immune cells. Dendritic cells engulf the dying cell and then present the cell's neoantigens to T cells. The discovery of ICD-inducing agents is important due to their potential to trigger autoimmunity. In this review, we discuss the various mechanisms of activating lysosome-induced cell death in cancer cells specifically and the strategies that current laboratories are using to selectively promote LMP in tumors.
Collapse
|
7
|
Rasmussen L, Foulks Z, Wu J, Burton C, Shi H. Establishing pteridine metabolism in a progressive isogenic breast cancer cell model - part II. Metabolomics 2022; 18:27. [PMID: 35482254 PMCID: PMC10030290 DOI: 10.1007/s11306-022-01885-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/01/2022] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Determining the biological significance of pteridines in cancer development and progression remains an important step in understanding the altered levels of urinary pteridines seen in certain cancers. Our companion study revealed that several folate-derived pteridines and lumazines correlated with tumorigenicity in an isogenic, progressive breast cancer cell model, providing direct evidence for the tumorigenic origin of pteridines. OBJECTIVES This study sought to elucidate the pteridine biosynthetic pathway in a progressive breast cancer model via direct pteridine dosing to determine how pteridine metabolism changes with tumorigenicity. METHODS First, MCF10AT breast cancer cells were dosed individually with 15 pteridines to determine which pteridines were being metabolized and what metabolic products were being produced. Second, pteridines that were significantly metabolized were dosed individually across the progressive breast cancer cell model (MCF10A, MCF10AT, and MCF10ACA1a) to determine the relationship between each metabolic reaction and breast cancer tumorigenicity. RESULTS Several pteridines were found to have altered metabolism in breast cancer cell lines, including pterin, isoxanthopterin, xanthopterin, sepiapterin, 6-biopterin, lumazine, and 7-hydroxylumazine (p < 0.05). In particular, isoxanthopterin and 6-biopterin concentrations were differentially expressed (p < 0.05) with respect to tumorigenicity following dosing with pterin and sepiapterin, respectively. Finally, the pteridine biosynthetic pathway in breast cancer cells was proposed based on these findings. CONCLUSIONS This study, along with its companion study, demonstrates that pteridine metabolism becomes disrupted in breast cancer tumor cells. This work highlights several key metabolic reactions within the pteridine biosynthetic pathway that may be targeted for further investigation and clinical applications.
Collapse
Affiliation(s)
- Lindsey Rasmussen
- Department of Chemistry, Missouri University of Science and Technology, 400 W 11th Street, 65409, Rolla, MO, USA
| | - Zachary Foulks
- Department of Chemistry, Missouri University of Science and Technology, 400 W 11th Street, 65409, Rolla, MO, USA
| | - Jiandong Wu
- Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, 65409, Rolla, MO, USA
| | - Casey Burton
- Department of Chemistry, Missouri University of Science and Technology, 400 W 11th Street, 65409, Rolla, MO, USA.
- Center for Biomedical Research, Missouri University of Science and Technology, 65409, Rolla, MO, USA.
- Phelps Health, 65401, Rolla, MO, USA.
| | - Honglan Shi
- Department of Chemistry, Missouri University of Science and Technology, 400 W 11th Street, 65409, Rolla, MO, USA.
- Center for Biomedical Research, Missouri University of Science and Technology, 65409, Rolla, MO, USA.
| |
Collapse
|
8
|
Targeting nucleotide metabolism: a promising approach to enhance cancer immunotherapy. J Hematol Oncol 2022; 15:45. [PMID: 35477416 PMCID: PMC9044757 DOI: 10.1186/s13045-022-01263-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 04/18/2022] [Indexed: 12/12/2022] Open
Abstract
Targeting nucleotide metabolism can not only inhibit tumor initiation and progression but also exert serious side effects. With in-depth studies of nucleotide metabolism, our understanding of nucleotide metabolism in tumors has revealed their non-proliferative effects on immune escape, indicating the potential effectiveness of nucleotide antimetabolites for enhancing immunotherapy. A growing body of evidence now supports the concept that targeting nucleotide metabolism can increase the antitumor immune response by (1) activating host immune systems via maintaining the concentrations of several important metabolites, such as adenosine and ATP, (2) promoting immunogenicity caused by increased mutability and genomic instability by disrupting the purine and pyrimidine pool, and (3) releasing nucleoside analogs via microbes to regulate immunity. Therapeutic approaches targeting nucleotide metabolism combined with immunotherapy have achieved exciting success in preclinical animal models. Here, we review how dysregulated nucleotide metabolism can promote tumor growth and interact with the host immune system, and we provide future insights into targeting nucleotide metabolism for immunotherapeutic treatment of various malignancies.
Collapse
|
9
|
Moisoiu T, Dragomir MP, Iancu SD, Schallenberg S, Birolo G, Ferrero G, Burghelea D, Stefancu A, Cozan RG, Licarete E, Allione A, Matullo G, Iacob G, Bálint Z, Badea RI, Naccarati A, Horst D, Pardini B, Leopold N, Elec F. Combined miRNA and SERS urine liquid biopsy for the point-of-care diagnosis and molecular stratification of bladder cancer. Mol Med 2022; 28:39. [PMID: 35365098 PMCID: PMC8973824 DOI: 10.1186/s10020-022-00462-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 03/07/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Bladder cancer (BC) has the highest per-patient cost of all cancer types. Hence, we aim to develop a non-invasive, point-of-care tool for the diagnostic and molecular stratification of patients with BC based on combined microRNAs (miRNAs) and surface-enhanced Raman spectroscopy (SERS) profiling of urine. METHODS Next-generation sequencing of the whole miRNome and SERS profiling were performed on urine samples collected from 15 patients with BC and 16 control subjects (CTRLs). A retrospective cohort (BC = 66 and CTRL = 50) and RT-qPCR were used to confirm the selected differently expressed miRNAs. Diagnostic accuracy was assessed using machine learning algorithms (logistic regression, naïve Bayes, and random forest), which were trained to discriminate between BC and CTRL, using as input either miRNAs, SERS, or both. The molecular stratification of BC based on miRNA and SERS profiling was performed to discriminate between high-grade and low-grade tumors and between luminal and basal types. RESULTS Combining SERS data with three differentially expressed miRNAs (miR-34a-5p, miR-205-3p, miR-210-3p) yielded an Area Under the Curve (AUC) of 0.92 ± 0.06 in discriminating between BC and CTRL, an accuracy which was superior either to miRNAs (AUC = 0.84 ± 0.03) or SERS data (AUC = 0.84 ± 0.05) individually. When evaluating the classification accuracy for luminal and basal BC, the combination of miRNAs and SERS profiling averaged an AUC of 0.95 ± 0.03 across the three machine learning algorithms, again better than miRNA (AUC = 0.89 ± 0.04) or SERS (AUC = 0.92 ± 0.05) individually, although SERS alone performed better in terms of classification accuracy. CONCLUSION miRNA profiling synergizes with SERS profiling for point-of-care diagnostic and molecular stratification of BC. By combining the two liquid biopsy methods, a clinically relevant tool that can aid BC patients is envisaged.
Collapse
Affiliation(s)
- Tudor Moisoiu
- Clinical Institute of Urology and Renal Transplantation, 400006, Cluj-Napoca, Romania.,Iuliu Hatieganu University of Medicine and Pharmacy, 400012, Cluj-Napoca, Romania.,Biomed Data Analytics SRL, 400696, Cluj-Napoca, Romania
| | - Mihnea P Dragomir
- Institute of Pathology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin and Berlin Institute of Health, 10117, Berlin, Germany. .,German Cancer Consortium (DKTK), Partner Site Berlin, and German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - Stefania D Iancu
- Faculty of Physics, Babeș-Bolyai University, 400084, Cluj-Napoca, Romania
| | - Simon Schallenberg
- Institute of Pathology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin and Berlin Institute of Health, 10117, Berlin, Germany
| | - Giovanni Birolo
- Department of Medical Sciences, University of Turin, 10126, Turin, Italy
| | - Giulio Ferrero
- Department of Clinical and Biological Sciences, University of Turin, Regione Gonzole, 10, 10043, Orbassano, Italy
| | - Dan Burghelea
- Clinical Institute of Urology and Renal Transplantation, 400006, Cluj-Napoca, Romania.,Iuliu Hatieganu University of Medicine and Pharmacy, 400012, Cluj-Napoca, Romania
| | - Andrei Stefancu
- Faculty of Physics, Babeș-Bolyai University, 400084, Cluj-Napoca, Romania
| | - Ramona G Cozan
- Faculty of Physics, Babeș-Bolyai University, 400084, Cluj-Napoca, Romania
| | - Emilia Licarete
- Faculty of Biology, Babeș-Bolyai University, 400015, Cluj-Napoca, Romania
| | - Alessandra Allione
- Department of Medical Sciences, University of Turin, 10126, Turin, Italy
| | - Giuseppe Matullo
- Department of Medical Sciences, University of Turin, 10126, Turin, Italy
| | - Gheorghita Iacob
- Clinical Institute of Urology and Renal Transplantation, 400006, Cluj-Napoca, Romania
| | - Zoltán Bálint
- Faculty of Physics, Babeș-Bolyai University, 400084, Cluj-Napoca, Romania
| | - Radu I Badea
- Iuliu Hatieganu University of Medicine and Pharmacy, 400012, Cluj-Napoca, Romania.,Octavian Fodor Regional Institute of Gastroenterology and Hepatology, 400162, Cluj-Napoca, Romania
| | - Alessio Naccarati
- Candiolo Cancer Institute-FPO IRCCS, 10060, Candiolo, Turin, Italy.,Italian Institute for Genomic Medicine (IIGM), IRCCS Candiolo, 10060, Candiolo, Turin, Italy
| | - David Horst
- Institute of Pathology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin and Berlin Institute of Health, 10117, Berlin, Germany.,German Cancer Consortium (DKTK), Partner Site Berlin, and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Barbara Pardini
- Candiolo Cancer Institute-FPO IRCCS, 10060, Candiolo, Turin, Italy. .,Italian Institute for Genomic Medicine (IIGM), IRCCS Candiolo, 10060, Candiolo, Turin, Italy.
| | - Nicolae Leopold
- Biomed Data Analytics SRL, 400696, Cluj-Napoca, Romania. .,Faculty of Physics, Babeș-Bolyai University, 400084, Cluj-Napoca, Romania.
| | - Florin Elec
- Clinical Institute of Urology and Renal Transplantation, 400006, Cluj-Napoca, Romania. .,Iuliu Hatieganu University of Medicine and Pharmacy, 400012, Cluj-Napoca, Romania.
| |
Collapse
|
10
|
Wang J, Liu K, Xiao T, Liu P, Prinz RA, Xu X. Uric acid accumulation in DNA-damaged tumor cells induces NKG2D ligand expression and antitumor immunity by activating TGF-β-activated kinase 1. Oncoimmunology 2022; 11:2016159. [PMID: 35154904 PMCID: PMC8837239 DOI: 10.1080/2162402x.2021.2016159] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
DNA damage by genotoxic drugs such as gemcitabine and 5-fluorouracil (5-FU) activates the ataxia telangiectasia, mutated (ATM)-Chk pathway and induces the expression of NKG2D ligands such as the MHC class I-related chain A and B (MICA/B). The mechanisms underlying this remain incompletely understood. Here we report that xanthine oxidoreductase (XOR), a rate-limiting enzyme that produces uric acid in the purine catabolism pathway, promotes DNA damage-induced MICA/B expression. Inhibition of the ATM-Chk pathway blocks genotoxic drug-induced uric acid production, TGF-β-activated kinase 1 (TAK1) activation, ERK phosphorylation, and MICA/B expression. Inhibition of uric acid production by the XOR inhibitor allopurinol blocks DNA damage-induced TAK1 activation and MICA/B expression in genotoxic drug-treated cells. Exogenous uric acid activates TAK1, NF-κB, and the MAP kinase pathway. TAK1 inhibition blocks gemcitabine- and uric acid-induced MAP kinase activation and MICA/B expression. Exogenous uric acid in its salt form, monosodium urate (MSU), induces MICA/B expression and sensitizes tumor cells to NK cell killing. MSU immunization with irradiated murine breast cancer cell line RCAS-Neu retards breast cancer growth in syngeneic breast cancer models and delays breast cancer development in a somatic breast cancer model. Our study suggests that uric acid accumulation plays an important role in activating TAK1, inducing DNA damage-induced MICA/B expression, and enhancing antitumor immunity.
Collapse
Affiliation(s)
- Jingxiang Wang
- College of Veterinary Medicine, Institute of Comparative Medicine, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Kai Liu
- College of Veterinary Medicine, Institute of Comparative Medicine, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Tianxiang Xiao
- College of Medicine, Yangzhou University, Yangzhou Jiangsu Province, P. R. China
| | - Penggang Liu
- College of Veterinary Medicine, Institute of Comparative Medicine, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Richard A. Prinz
- Department of Surgery, NorthShore University Health System, Evanston, IL USA
| | - Xiulong Xu
- College of Veterinary Medicine, Institute of Comparative Medicine, Yangzhou University, Yangzhou, Jiangsu Province, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou Jiangsu Province, China
- Department of Molecular and Cellular Medicine, Rush University Medical Center, Chicago, Il USA
| |
Collapse
|
11
|
Rasmussen L, Foulks Z, Burton C, Shi H. Establishing pteridine metabolism in a progressive isogenic breast cancer cell model. Metabolomics 2021; 18:2. [PMID: 34919200 PMCID: PMC10067363 DOI: 10.1007/s11306-021-01861-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 12/07/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Pteridines include folate-derived metabolites that have been putatively associated with certain cancers in clinical studies. However, their biological significance in cancer metabolism and role in cancer development and progression remains poorly understood. OBJECTIVES The purpose of this study was to examine the effects of tumorigenicity on pteridine metabolism by studying a panel of 15 pteridine derivatives using a progressive breast cancer cell line model with and without folic acid dosing. METHODS The MCF10A progressive breast cancer model, including sequentially derived MCF10A (benign), MCF10AT (premalignant), and MCF10CA1a (malignant) cell lines were dosed with 0, 100, and 250 mg/L folic acid. Pteridines were analyzed in both intracellular and extracellular contexts using an improved high-performance liquid chromatography-tandem mass spectrometry method. RESULTS Pteridines were located predominately in the extracellular media. Folic acid dosing increased extracellular levels of pterin, 6-hydroxylumazine, xanthopterin, 6-hydroxymethylpterin, and 6-carboxypterin in a dose-dependent manner. In particular, pterin and 6-hydroxylumazine levels were positively correlated with tumorigenicity upon folate dosing. CONCLUSIONS Folic acid is a primary driver for pteridine metabolism in human breast cell. Higher folate levels contribute to increased formation and excretion of pteridine derivatives to the extracellular media. In breast cancer, this metabolic pathway becomes dysregulated, resulting in the excretion of certain pteridine derivatives and providing in vitro evidence for the observation of elevated pteridines in the urine of breast cancer patients. Finally, this study reports a novel use of the MCF10A progressive breast cancer model for metabolomics applications that may readily be applied to other metabolites of interest.
Collapse
Affiliation(s)
- Lindsey Rasmussen
- Department of Chemistry, Missouri University of Science and Technology, 400 W 11th Street, Rolla, MO, 65409, USA
| | - Zachary Foulks
- Department of Chemistry, Missouri University of Science and Technology, 400 W 11th Street, Rolla, MO, 65409, USA
| | - Casey Burton
- Department of Chemistry, Missouri University of Science and Technology, 400 W 11th Street, Rolla, MO, 65409, USA.
- Phelps Health, Rolla, MO, 65401, USA.
| | - Honglan Shi
- Department of Chemistry, Missouri University of Science and Technology, 400 W 11th Street, Rolla, MO, 65409, USA.
| |
Collapse
|
12
|
Umar MI, Hassan W, Murtaza G, Buabeid M, Arafa E, Irfan HM, Asmawi MZ, Huang X. The Adipokine Component in the Molecular Regulation of Cancer Cell Survival, Proliferation and Metastasis. Pathol Oncol Res 2021; 27:1609828. [PMID: 34588926 PMCID: PMC8473628 DOI: 10.3389/pore.2021.1609828] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 07/09/2021] [Indexed: 12/22/2022]
Abstract
A hormonal imbalance may disrupt the rigorously monitored cellular microenvironment by hampering the natural homeostatic mechanisms. The most common example of such hormonal glitch could be seen in obesity where the uprise in adipokine levels is in virtue of the expanding bulk of adipose tissue. Such aberrant endocrine signaling disrupts the regulation of cellular fate, rendering the cells to live in a tumor supportive microenvironment. Previously, it was believed that the adipokines support cancer proliferation and metastasis with no direct involvement in neoplastic transformations and tumorigenesis. However, the recent studies have reported discrete mechanisms that establish the direct involvement of adipokine signaling in tumorigenesis. Moreover, the individual adipokine profile of the patients has never been considered in the prognosis and staging of the disease. Hence, the present manuscript has focused on the reported extensive mechanisms that culminate the basis of poor prognosis and diminished survival rate in obese cancer patients.
Collapse
Affiliation(s)
| | - Waseem Hassan
- Department of Pharmacy, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Ghulam Murtaza
- Department of Pharmacy, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Manal Buabeid
- Department of Clinical Sciences, Ajman University, Ajman, United Arab Emirates.,Medical and Bio-allied Health Sciences Research Centre, Ajman University, Ajman, United Arab Emirates
| | - Elshaimaa Arafa
- Department of Clinical Sciences, Ajman University, Ajman, United Arab Emirates.,Medical and Bio-allied Health Sciences Research Centre, Ajman University, Ajman, United Arab Emirates
| | | | - Mohd Zaini Asmawi
- School of Pharmaceutical Sciences, University of Science Malaysia, Pulau Pinang, Malaysia
| | - Xianju Huang
- College of Pharmacy, South-Central University for Nationalities, Wuhan, China
| |
Collapse
|
13
|
Lin Z, Xie YZ, Zhao MC, Hou PP, Tang J, Chen GL. Xanthine dehydrogenase as a prognostic biomarker related to tumor immunology in hepatocellular carcinoma. Cancer Cell Int 2021; 21:475. [PMID: 34496841 PMCID: PMC8425161 DOI: 10.1186/s12935-021-02173-7] [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: 05/31/2021] [Accepted: 08/23/2021] [Indexed: 01/10/2023] Open
Abstract
Background Xanthine dehydrogenase (XDH) is a critical enzyme involved in the oxidative metabolism of purines, pterin and aldehydes and a central component of the innate immune system. However, the prognostic value of XDH in predicting tumor-infiltrating lymphocyte abundance, the immune response, and survival in different cancers, including hepatocellular carcinoma (HCC), is still unclear. Methods XDH expression was analyzed in multiple databases, including Oncomine, the Tumor Immune Estimation Resource (TIMER), the Kaplan–Meier plotter database, the Gene Expression Profiling Interactive Analysis (GEPIA) database, and The Cancer Genome Atlas (TCGA). XDH-associated transcriptional profiles were detected with an mRNA array, and the levels of infiltrating immune cells were validated by immunohistochemistry (IHC) of HCC tissues. A predictive signature containing multiple XDH-associated immune genes was established using the Cox regression model. Results Decreased XDH mRNA expression was detected in human cancers originating from the liver, bladder, breast, colon, bile duct, kidney, and hematolymphoid system. The prognostic potential of XDH mRNA expression was also significant in certain other cancers, including HCC, breast cancer, kidney or bladder carcinoma, gastric cancer, mesothelioma, lung cancer, and ovarian cancer. In HCC, a low XDH mRNA level predicted poorer overall survival, disease-specific survival, disease-free survival, and progression-free survival. The prognostic value of XDH was independent of the clinical features of HCC patients. Indeed, XDH expression in HCC activated several immune-related pathways, including the T cell receptor, PI3K-AKT, and MAPK signaling pathways, which induced a cytotoxic immune response. Importantly, the microenvironment of XDHhigh HCC tumors contained abundant infiltrating CD8 + T cells but not exhausted T cells. A risk prediction signature based on multiple XDH-associated immune genes was revealed as an independent predictor in the TCGA liver cancer cohort. Conclusion These findings suggest that XDH is a valuable prognostic biomarker in HCC and other cancers and indicate that it may function in tumor immunology. Loss of XDH expression may be an immune evasion mechanism for HCC. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-02173-7.
Collapse
Affiliation(s)
- Zhen Lin
- Department of Oncology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China.,Department of Internal Medicine 3, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, 91054, Erlangen, Germany
| | - Yi-Zhao Xie
- Department of Medical Oncology, Fudan University, Shanghai Cancer Center, Shanghai, 200032, China.,Department of Oncology, Shanghai Medical College of Fudan University, Shanghai, 200032, China
| | - Ming-Chun Zhao
- Department of Pathology, Guilin Hospital of Chinese Traditional and Western Medicine, Guilin, 541004, China
| | - Pin-Pin Hou
- Central Laboratory, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201114, China
| | - Juan Tang
- Department of Pathology, The Second Affiliated Hospital of Guilin Medical University, Guilin, 541199, China.
| | - Guang-Liang Chen
- Department of Medical Oncology, Fudan University, Shanghai Cancer Center, Shanghai, 200032, China. .,Department of Oncology, Shanghai Medical College of Fudan University, Shanghai, 200032, China.
| |
Collapse
|
14
|
Albogami SM, Asiri Y, Asiri A, Alnefaie AA, Alnefaie S. Effects of neoadjuvant therapies on genetic regulation of targeted pathways in ER+ primary ductal breast carcinoma: A meta-analysis of microarray datasets. Saudi Pharm J 2021; 29:656-669. [PMID: 34400859 PMCID: PMC8347676 DOI: 10.1016/j.jsps.2021.04.027] [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: 03/03/2021] [Accepted: 04/24/2021] [Indexed: 12/11/2022] Open
Abstract
Breast cancer arises as a result of multiple interactions between environmental and genetic factors. Conventionally, breast cancer is treated based on histopathological and clinical features. DNA technologies like the human genome microarray are now partially integrated into clinical practice and are used for developing new "personalized medicines" and "pharmacogenetics" for improving the efficiency and safety of cancer medications. We investigated the effects of four established therapies-for ER+ ductal breast cancer-on the differential gene expression. The therapies included single agent tamoxifen, two-agent docetaxel and capecitabine, or combined three-agents CAF (cyclophosphamide, doxorubicin, and fluorouracil) and CMF (cyclophosphamide, methotrexate, and fluorouracil). Genevestigator 8.1.0 was used to compare five datasets from patients with infiltrating ductal carcinoma, untreated or treated with selected drugs, to those from the healthy control. We identified 74 differentially expressed genes involved in three pathways, i.e., apoptosis (extrinsic and intrinsic), oxidative signaling, and PI3K/Akt signaling. The treatments affected the expression of apoptotic genes (TNFRSF10B [TRAIL], FAS, CASP3/6/7/8, PMAIP1 [NOXA], BNIP3L, BNIP3, BCL2A1, and BCL2), the oxidative stress-related genes (NOX4, XDH, MAOA, GSR, GPX3, and SOD3), and the PI3K/Akt pathway gene (ERBB2 [HER2]). Breast cancer treatments are complex with varying drug responses and efficacy among patients. This necessitates identifying novel biomarkers for predicting the drug response, using available data and new technologies. GSR, NOX4, CASP3, and ERBB2 are potential biomarkers for predicting the treatment response in primary ER+ ductal breast carcinoma.
Collapse
Key Words
- BC, breast cancer
- Bax, Bcl-2-associated X
- Bcl2, B-cell lymphoma 2
- CAF, cyclophosphamide, doxorubicin, and fluorouracil
- CASP3
- CMF, cyclophosphamide, methotrexate, and fluorouracil
- Chemotherapy
- DC, docetaxel and capecitabine
- ER+ ductal carcinoma
- ER, estrogen receptor
- ERBB2 (HER2)
- FC, fold-change
- FU, fluorouracil
- GSR
- H2O2, hydrogen peroxide
- HER2, human epidermal growth factor 2
- IGF-1, insulin-like growth factor-1
- NOX4
- OH●, hydroxyl radical
- PI3K/Akt, phosphatidylinositol 3-kinase/protein kinase B
- PM, personalized medicine
- PR, progesterone receptor
- PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-Analyses
- ROS, reactive oxygen species
- TGF-α/β, transforming growth factor alpha/beta
- TMX, tamoxifen
- TS, thymidylate synthase
Collapse
Affiliation(s)
- Sarah M. Albogami
- Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Yousif Asiri
- Department of Clinical Pharmacy, College of Pharmacy, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Abdulaziz Asiri
- Pharmaceutical Care Division, King Faisal Specialist Hospital and Research Center, P.O. Box 3354, MBC#11, Riyadh 11211, Saudi Arabia
| | - Alaa A. Alnefaie
- International Medical Center Hospital, P.O. Box 953, Jeddah 21423, Saudi Arabia
| | - Sahar Alnefaie
- Department of Surgery, College of Medicine, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| |
Collapse
|
15
|
Phyo JB, Woo A, Yu HJ, Lim K, Cho BH, Jung HS, Lee MY. Label-Free SERS Analysis of Urine Using a 3D-Stacked AgNW-Glass Fiber Filter Sensor for the Diagnosis of Pancreatic Cancer and Prostate Cancer. Anal Chem 2021; 93:3778-3785. [PMID: 33576598 DOI: 10.1021/acs.analchem.0c04200] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Metabolomics shows tremendous potential for the early diagnosis and screening of cancer. For clinical application as an effective diagnostic tool, however, improved analytical methods for complex biological fluids are required. Here, we developed a reliable rapid urine analysis system based on surface-enhanced Raman spectroscopy (SERS) using 3D-stacked silver nanowires (AgNWs) on a glass fiber filter (GFF) sensor and applied it to the diagnosis of pancreatic cancer and prostate cancer. Urine samples were pretreated with centrifugation to remove large debris and with calcium ion addition to improve the binding of metabolites to AgNWs. The label-free urine-SERS detection using the AgNW-GFF SERS sensor showed different spectral patterns and distinguishable specific peaks in three groups: normal control (n = 30), pancreatic cancer (n = 22), and prostate cancer (n = 22). Multivariate analyses of SERS spectra using unsupervised principal component analysis and supervised orthogonal partial least-squares discriminant analysis showed excellent discrimination between the pancreatic cancer group and the prostate cancer group as well as between the normal control group and the combined cancer groups. The results demonstrate the great potential of the urine-SERS analysis system using the AgNW-GFF SERS sensor for the noninvasive diagnosis and screening of cancers.
Collapse
Affiliation(s)
- Jung Bin Phyo
- Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, 81, Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea.,Smart Healthcare Research Institute, Samsung Medical Center, 81, Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
| | - Ayoung Woo
- Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, 81, Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
| | - Ho Jae Yu
- Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, 81, Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
| | - Kyongmook Lim
- Smart Healthcare Research Institute, Samsung Medical Center, 81, Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
| | - Baek Hwan Cho
- Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, 81, Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea.,Smart Healthcare Research Institute, Samsung Medical Center, 81, Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
| | - Ho Sang Jung
- Department of Nano-Bio Convergence, Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam 51508, Republic of Korea
| | - Min-Young Lee
- Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, 81, Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea.,Smart Healthcare Research Institute, Samsung Medical Center, 81, Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
| |
Collapse
|
16
|
Mahmoud WH, Deghadi RG, Mohamed GG. Metal complexes of ferrocenyl-substituted Schiff base: Preparation, characterization, molecular structure, molecular docking studies, and biological investigation. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121113] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
17
|
Targeted knock-in mice expressing the oxidase-fixed form of xanthine oxidoreductase favor tumor growth. Nat Commun 2019; 10:4904. [PMID: 31659168 PMCID: PMC6817904 DOI: 10.1038/s41467-019-12565-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 09/13/2019] [Indexed: 12/17/2022] Open
Abstract
Xanthine oxidoreductase has been implicated in cancer. Nonetheless, the role played by its two convertible forms, xanthine dehydrogenase (XDH) and oxidase (XO) during tumorigenesis is not understood. Here we produce XDH-stable and XO-locked knock-in (ki) mice to address this question. After tumor transfer, XO ki mice show strongly increased tumor growth compared to wild type (WT) and XDH ki mice. Hematopoietic XO expression is responsible for this effect. After macrophage depletion, tumor growth is reduced. Adoptive transfer of XO-ki macrophages in WT mice increases tumor growth. In vitro, XO ki macrophages produce higher levels of reactive oxygen species (ROS) responsible for the increased Tregs observed in the tumors. Blocking ROS in vivo slows down tumor growth. Collectively, these results indicate that the balance of XO/XDH plays an important role in immune surveillance of tumor development. Strategies that inhibit the XO form specifically may be valuable in controlling cancer growth. The roles of the convertible forms, xanthine dehydrogenase (XDH) and xanthine oxidase (XO) during tumorigenesis is not known. Here, the authors develop XDH-stable and XO-locked knock-in (ki) mice and show increased tumor growth in XO ki mice, via macrophage-mediated immunoregulatory responses.
Collapse
|
18
|
Xu H, Li C, Mozziconacci O, Zhu R, Xu Y, Tang Y, Chen R, Huang Y, Holzbeierlein JM, Schöneich C, Huang J, Li B. Xanthine oxidase-mediated oxidative stress promotes cancer cell-specific apoptosis. Free Radic Biol Med 2019; 139:70-79. [PMID: 31103463 PMCID: PMC6662189 DOI: 10.1016/j.freeradbiomed.2019.05.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/06/2019] [Accepted: 05/15/2019] [Indexed: 12/25/2022]
Abstract
The natural compound Alternol was shown to induce profound oxidative stress and apoptotic cell death preferentially in cancer cells. In this study, a comprehensive investigation was conducted to understand the mechanism for Alternol-induced ROS accumulation responsible for apoptotic cell death. Our data revealed that Alternol treatment moderately increased mitochondrial superoxide formation rate, but it was significantly lower than the total ROS positive cell population. Pre-treatment with mitochondria-specific anti-oxidant MitoQ, NOX or NOS specific inhibitors had no protective effect on Alternol-induced ROS accumulation and cell death. However, XDH/XO inhibition by specific small chemical inhibitors or gene silencing reduced total ROS levels and protected cells from apoptosis induced by Alternol. Further analysis revealed that Alternol treatment significantly enhanced XDH oxidative activity and induced a strong protein oxidation-related damage in malignant but not benign cells. Interestingly, benign cells exerted a strong spike in anti-oxidant SOD and catalase activities compared to malignant cells after Alternol treatment. Cell-based protein-ligand engagement and in-silicon docking analysis showed that Alternol interacts with XDH protein on the catalytic domain with two amino acid residues away from its substrate binding sites. Taken together, our data demonstrate that Alternol treatment enhances XDH oxidative activity, leading to ROS-dependent apoptotic cell death.
Collapse
Affiliation(s)
- Haixia Xu
- Department of Critical Care Medicine, Renmin Hospital, Wuhan University, Wuhan, China; Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA
| | - Changlin Li
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA; Institute of Precision Medicine, Jining Medical University, Jining, China
| | - Olivier Mozziconacci
- Department of Pharmaceutical Chemistry, The University of Kansas School of Pharmacy, Lawrence, KS, USA
| | - Runzhi Zhu
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA; Center for Cell Therapy, Department of Medical Oncology, The Affiliated Hospital, Jiangsu University, Zhenjiang, China
| | - Ying Xu
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA
| | - Yuzhe Tang
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA
| | - Ruibao Chen
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA
| | - Yan Huang
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA
| | | | - Christian Schöneich
- Department of Pharmaceutical Chemistry, The University of Kansas School of Pharmacy, Lawrence, KS, USA
| | - Jian Huang
- Department of Pathology, Guangdong Medical University, Zhanjiang, China
| | - Benyi Li
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA; Center for Cell Therapy, Department of Medical Oncology, The Affiliated Hospital, Jiangsu University, Zhenjiang, China; Department of Pathology, Guangdong Medical University, Zhanjiang, China.
| |
Collapse
|
19
|
Johnson TA, Jinnah HA, Kamatani N. Shortage of Cellular ATP as a Cause of Diseases and Strategies to Enhance ATP. Front Pharmacol 2019; 10:98. [PMID: 30837873 PMCID: PMC6390775 DOI: 10.3389/fphar.2019.00098] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 01/24/2019] [Indexed: 12/14/2022] Open
Abstract
Germline mutations in cellular-energy associated genes have been shown to lead to various monogenic disorders. Notably, mitochondrial disorders often impact skeletal muscle, brain, liver, heart, and kidneys, which are the body’s top energy-consuming organs. However, energy-related dysfunctions have not been widely seen as causes of common diseases, although evidence points to such a link for certain disorders. During acute energy consumption, like extreme exercise, cells increase the favorability of the adenylate kinase reaction 2-ADP -> ATP+AMP by AMP deaminase degrading AMP to IMP, which further degrades to inosine and then to purines hypoxanthine -> xanthine -> urate. Thus, increased blood urate levels may act as a barometer of extreme energy consumption. AMP deaminase deficient subjects experience some negative effects like decreased muscle power output, but also positive effects such as decreased diabetes and improved prognosis for chronic heart failure patients. That may reflect decreased energy consumption from maintaining the pool of IMP for salvage to AMP and then ATP, since de novo IMP synthesis requires burning seven ATPs. Similarly, beneficial effects have been seen in heart, skeletal muscle, or brain after treatment with allopurinol or febuxostat to inhibit xanthine oxidoreductase, which catalyzes hypoxanthine -> xanthine and xanthine -> urate reactions. Some disorders of those organs may reflect dysfunction in energy-consumption/production, and the observed beneficial effects related to reinforcement of ATP re-synthesis due to increased hypoxanthine levels in the blood and tissues. Recent clinical studies indicated that treatment with xanthine oxidoreductase inhibitors plus inosine had the strongest impact for increasing the pool of salvageable purines and leading to increased ATP levels in humans, thereby suggesting that this combination is more beneficial than a xanthine oxidoreductase inhibitor alone to treat disorders with ATP deficiency.
Collapse
Affiliation(s)
| | - H A Jinnah
- Departments of Neurology and Human Genetics, Emory University School of Medicine, Atlanta, GA, United States
| | | |
Collapse
|
20
|
Combinatorial Electrophoresis and Mass Spectrometry-Based Proteomics in Breast Milk for Breast Cancer Biomarker Discovery. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1140:451-467. [PMID: 31347064 DOI: 10.1007/978-3-030-15950-4_26] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Innovations in approaches for early detection and individual risk assessment of different cancers, including breast cancer (BC), are needed to reduce cancer morbidity and associated mortality. The assessment of potential cancer biomarkers in accessible bodily fluids provides a novel approach to identify the risk and/or onset of cancer. Biomarkers are biomolecules, such as proteins, that are indicative of an abnormality or a disease. Human milk is vastly underutilized biospecimen that offers the opportunity to investigate potential protein BC-biomarkers in young, reproductively active women. As a first step, we have examined the entire protein pattern in human milk samples from breastfeeding mothers with cancer, who were diagnosed either before or after milk donation, and from women without cancer, using mass spectrometry (MS)-based proteomics.
Collapse
|
21
|
Aslebagh R, Channaveerappa D, Arcaro KF, Darie CC. Proteomics analysis of human breast milk to assess breast cancer risk. Electrophoresis 2018; 39:653-665. [PMID: 29193311 DOI: 10.1002/elps.201700123] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 11/13/2017] [Accepted: 11/14/2017] [Indexed: 12/19/2022]
Abstract
Detection of breast cancer (BC) in young women is challenging because mammography, the most common tool for detecting BC, is not effective on the dense breast tissue characteristic of young women. In addition to the limited means for detecting their BC, young women face a transient increased risk of pregnancy-associated BC. As a consequence, reproductively active women could benefit significantly from a tool that provides them with accurate risk assessment and early detection of BC. One potential method for detection of BC is biochemical monitoring of proteins and other molecules in bodily fluids such as serum, nipple aspirate, ductal lavage, tear, urine, saliva and breast milk. Of all these fluids, only breast milk provides access to a large volume of breast tissue, in the form of exfoliated epithelial cells, and to the local breast environment, in the form of molecules in the milk. Thus, analysis of breast milk is a non-invasive method with significant potential for assessing BC risk. Here we analyzed human breast milk by mass spectrometry (MS)-based proteomics to build a biomarker signature for early detection of BC. Ten milk samples from eight women provided five paired-groups (cancer versus control) for analysis of dysregulatedproteins: two within woman comparisons (milk from a diseased breast versus a healthy breast of the same woman) and three across women comparisons (milk from a woman with cancer versus a woman without cancer). Despite a wide range in the time between milk donation and cancer diagnosis (cancer diagnosis occurred from 1 month before to 24 months after milk donation), the levels of some proteins differed significantly between cancer and control in several of the five comparison groups. These pilot data are supportive of the idea that molecular analysis of breast milk will identify proteins informative for early detection and accurate assessment of BC risk, and warrant further research. Data are available via ProteomeXchange with identifier PXD007066.
Collapse
Affiliation(s)
- Roshanak Aslebagh
- Biochemistry & Proteomics Group, Department of Chemistry & Biomolecular Science, Clarkson University, Potsdam, NY, USA
| | - Devika Channaveerappa
- Biochemistry & Proteomics Group, Department of Chemistry & Biomolecular Science, Clarkson University, Potsdam, NY, USA
| | - Kathleen F Arcaro
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Costel C Darie
- Biochemistry & Proteomics Group, Department of Chemistry & Biomolecular Science, Clarkson University, Potsdam, NY, USA
| |
Collapse
|
22
|
Battelli MG, Bortolotti M, Polito L, Bolognesi A. Metabolic syndrome and cancer risk: The role of xanthine oxidoreductase. Redox Biol 2018; 21:101070. [PMID: 30576922 PMCID: PMC6302121 DOI: 10.1016/j.redox.2018.101070] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 11/29/2018] [Accepted: 12/06/2018] [Indexed: 12/29/2022] Open
Abstract
Obesity and related pathologies such as diabetes and metabolic syndrome are associated with chronic inflammation and cancer. The serum level of xanthine oxidoreductase (XOR) is correlated to obesity-associated metabolic disorders. XOR can play a role in the pathogenesis of both metabolic syndrome and cancer through the inflammatory response and the oxidative stress elicited by the products of its activity. The reactive oxygen and nitrogen species and the uric acid derived from XOR concur to the development of hypertension, dyslipidemia and insulin resistance and participate in both cell transformation and proliferation, as well as in the progression and metastasis process. Despite the availability of different drugs to inhibit in vivo XOR activity, the complexity of XOR inhibition effects should be carefully considered before clinical application, save in the case of symptomatic hyperuricemia. Metabolic syndrome (MS) increases the risk of cancer development. Xanthine oxidoreductase (XOR) plays a role in both MS and cancer. Uric acid, ROS and RNS produced by XOR cause inflammation and oxidative stress. Inflammation and oxidative stress contribute to the pathogenesis of MS and cancer. XOR activity can be pharmacologically controlled.
Collapse
Affiliation(s)
- Maria Giulia Battelli
- Department of Experimental, Diagnostic and Specialty Medicine-DIMES, Alma Mater Studiorum, University of Bologna, Via San Giacomo 14, 40126 Bologna, Italy.
| | - Massimo Bortolotti
- Department of Experimental, Diagnostic and Specialty Medicine-DIMES, Alma Mater Studiorum, University of Bologna, Via San Giacomo 14, 40126 Bologna, Italy.
| | - Letizia Polito
- Department of Experimental, Diagnostic and Specialty Medicine-DIMES, Alma Mater Studiorum, University of Bologna, Via San Giacomo 14, 40126 Bologna, Italy.
| | - Andrea Bolognesi
- Department of Experimental, Diagnostic and Specialty Medicine-DIMES, Alma Mater Studiorum, University of Bologna, Via San Giacomo 14, 40126 Bologna, Italy.
| |
Collapse
|
23
|
Liu H, Zhu H, Shi W, Lin Y, Ma G, Tao G, Gong W, Zhao Q, Du M, Wang M, Chu H, Zhang Z. Genetic variants in XDH are associated with prognosis for gastric cancer in a Chinese population. Gene 2018; 663:196-202. [PMID: 29551504 DOI: 10.1016/j.gene.2018.03.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 03/05/2018] [Accepted: 03/14/2018] [Indexed: 01/26/2023]
Abstract
OBJECTIVE We explored the association between single nucleotide polymorphisms (SNPs) rs207454 and rs494852 located in xanthine dehydrogenase (XDH) and gastric cancer (GC) survival. METHODS A total of 940 patients with gastric cancer were enrolled and genotyped using TaqMan allelic discrimination method. The Kaplan-Meier test and log-rank examine were used to assess the effect of genetic variation. RESULTS Patients carrying rs207454 CC genotype had a longer survival time than those with the AA genotype (P = 0.042). The similar association was detected in the recessive model (P = 0.017). We conducted expression quantitative trait loci (eQTL) analysis and found that gastric cancer patients carrying rs207454 CC genotype had significant lower XDH levels than those with AA/AC genotype, suggesting that rs207454 polymorphism effected the expression of XDH. Additionally, the Kaplan-Meier curves showed that gastric cancer patients with high expression of XDH had remarkably poor survival outcome than those with low expression (hazard ratio [HR] = 1.53, 95% confidence interval [CI] = 1.29-1.82). CONCLUSIONS Genetic variants in XDH were associated with the survival of gastric cancer and may act as prognostic markers for individual suffered from gastric cancer.
Collapse
Affiliation(s)
- Hanting Liu
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Haixia Zhu
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China; Core Laboratory, Nantong Tumor Hospital, Nantong, China
| | - Weihong Shi
- Department of Clinical Medicine, Jiangsu Vocational College of Medicine, Yancheng, China
| | - Yadi Lin
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Gaoxiang Ma
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Guoquan Tao
- Department of General Surgery, Huai-An First People's Hospital Affiliated to Nanjing Medical University, Huai-An, China
| | - Weida Gong
- Department of General Surgery, Yixing Cancer Hospital, Yixing, China
| | - Qinghong Zhao
- Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Mulong Du
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Meilin Wang
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Haiyan Chu
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China.
| | - Zhengdong Zhang
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China.
| |
Collapse
|
24
|
Xanthine oxidoreductase is required for genotoxic stress-induced NKG2D ligand expression and gemcitabine-mediated antitumor activity. Oncotarget 2018; 7:59220-59235. [PMID: 27494876 PMCID: PMC5312307 DOI: 10.18632/oncotarget.11042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 07/18/2016] [Indexed: 11/25/2022] Open
Abstract
MICA/B (the major histocompatibility antigen-related chain A and B) and Rae I are stress-inducible ligands for the immune-receptor NKG2D. Mechanisms by which genotoxic stress and DNA damage induce the expression of NKG2D ligands remain incompletely understood. Here, we report that inhibition of xanthine oxidoreductase (XOR) activity by allopurinol or inhibition of XOR expression by gene knockdown abrogated genotoxic stress-induced expression of MICA/B and Rae I in three tumor cell lines. XOR knockdown also blocked gemcitabine-mediated antitumor activity in an orthotopic syngeneic mouse model of breast cancer. As a rate-limiting enzyme in the purine catabolic pathway, XOR generates two end-products, uric acid and reactive oxygen species (ROS). ROS scavenging had an insignificant effect on genotoxic drug-induced MICA/B expression but modestly inhibited radiation-induced MICA/B expression. Exogenous uric acid (in the form of monosodium urate) induced MICA/B expression by activating the MAP kinase pathway. Allopurinol blocked genotoxic stress-induced MAP kinase activation. Our study provides mechanistic insights into genotoxic stress-induced activation of the MAP kinase pathway and suggests that XOR is required for genotoxic stress-induced NKG2D ligand expression and gemcitabine-mediated antitumor activity.
Collapse
|
25
|
Xanthine dehydrogenase downregulation promotes TGFβ signaling and cancer stem cell-related gene expression in hepatocellular carcinoma. Oncogenesis 2017; 6:e382. [PMID: 28945217 PMCID: PMC5623907 DOI: 10.1038/oncsis.2017.81] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 06/22/2017] [Accepted: 08/05/2017] [Indexed: 12/23/2022] Open
Abstract
Xanthine dehydrogenase (XDH), a rate-limiting enzyme involved in purine metabolism, has an essential role in inflammatory cascades. Researchers have known for decades that XDH activity is decreased in some cancers, including hepatocellular carcinoma (HCC). However, the role of XDH in cancer pathogenesis has not been fully explored. In this study, we showed that low XDH mRNA levels were correlated with higher tumor stages and poorer prognoses in patients with HCC. Knocking down or inhibiting XDH promoted migration and invasion but not proliferation of HCC cells. The abovementioned phenotypic changes are dependent on increases in epithelial-mesenchymal transition marker gene expression and transforming growth factor-β-Smad2/3 signaling activity in HCC. XDH overexpression suppressed HCC cell invasion in vitro and in vivo. In addition, the expression and activity of XDH were associated with the expression of CSC-related genes, such as CD44 or CD133, in HCC cells. These data suggest that downregulated XDH expression may be a useful clinical indicator and contribute to the development and progression of HCC.
Collapse
|
26
|
Ji F, Luan H, Huang Y, Cai Z, Li M. MS-Based Metabolomics for the Investigation of Neuro-Metabolic Changes Associated with BDE-47 Exposure in C57BL/6 Mice. JOURNAL OF ANALYSIS AND TESTING 2017. [DOI: 10.1007/s41664-017-0026-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
27
|
Li MH, Du HZ, Kong GJ, Liu LB, Li XX, Lin SS, Jia AQ, Yuan ST, Sun L, Wang JS. Nuclear Magnetic Resonance-Based Metabolomics Approach to Evaluate the Prevention Effect of Camellia nitidissima Chi on Colitis-Associated Carcinogenesis. Front Pharmacol 2017; 8:447. [PMID: 28744216 PMCID: PMC5504182 DOI: 10.3389/fphar.2017.00447] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 06/22/2017] [Indexed: 12/31/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most common malignant tumors worldwide, occurring in the colon or rectum portion of large intestine. With marked antioxidant, anti-inflammation and anti-tumor activities, Camellia nitidissima Chi has been used as an effective treatment of cancer. The azoxymethane/dextran sodium sulfate (AOM/DSS) induced CRC mice model was established and the prevention effect of C. nitidissima Chi extracts on the evolving of CRC was evaluated by examination of neoplastic lesions, histopathological inspection, serum biochemistry analysis, combined with nuclear magnetic resonance (NMR)-based metabolomics and correlation network analysis. C. nitidissima Chi extracts could significantly inhibit AOM/DSS induced CRC, relieve the colonic pathology of inflammation and ameliorate the serum biochemistry, and could significantly reverse the disturbed metabolic profiling toward the normal state. Moreover, the butanol fraction showed a better efficacy than the water-soluble fraction of C. nitidissima Chi. Further development of C. nitidissima Chi extracts as a potent CRC inhibitor was warranted.
Collapse
Affiliation(s)
- Ming-Hui Li
- Center for Molecular Metabolism, Nanjing University of Science and TechnologyNanjing, China
| | - Hong-Zhi Du
- Jiangsu Key Laboratory of Drug Screening and Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical UniversityNanjing, China
| | - Gui-Ju Kong
- Jiangsu Key Laboratory of Drug Screening and Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical UniversityNanjing, China
| | - Li-Bao Liu
- Department of Cardiothoracic Surgery, The Third Affiliated Hospital, Sun Yat-Sen UniversityGuangzhou, China
| | - Xin-Xin Li
- Tasly Research Institute, Tianjin Tasly Holding Group Co. Ltd.Tianjin, China
| | - Sen-Sen Lin
- Jiangsu Key Laboratory of Drug Screening and Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical UniversityNanjing, China
| | - Ai-Qun Jia
- School of Environmental and Biological Engineering, Nanjing University of Science and TechnologyNanjing, China
| | - Sheng-Tao Yuan
- Jiangsu Key Laboratory of Drug Screening and Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical UniversityNanjing, China
| | - Li Sun
- Jiangsu Key Laboratory of Drug Screening and Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical UniversityNanjing, China
| | - Jun-Song Wang
- Center for Molecular Metabolism, Nanjing University of Science and TechnologyNanjing, China
| |
Collapse
|
28
|
Chen YF, Li Q, Chen DT, Pan JH, Chen YH, Wen ZS, Zeng WA. Prognostic value of pre-operative serum uric acid levels in esophageal squamous cell carcinoma patients who undergo R0 esophagectomy. Cancer Biomark 2017; 17:89-96. [PMID: 27314297 DOI: 10.3233/cbm-160621] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND The serum uric acid (SUA) is the end-product from the metabolic breakdown of purine nucleotides. It has been considered to be a prognostic factor for malignant tumor in several researches. However, its prognostic value in patients with esophageal squamous cell carcinoma (ESCC) has not been elucidated. METHODS We retrospectively reviewed the records of 209 ESCC patients who underwent R0 esophagectomy. A receiver operating characteristic (ROC) curve analysis was used to determine the optimal cut-off value for pre-operative SUA levels and to divide the ESCC patients into two groups. Furthermore, we analyzed the pre-operative serum uric acid (SUA) levels and its relationship with the clinicopathological parameters and the prognosis of 209 ESCC patients. RESULTS Optimal cut-off value for pre-operative SUA in ROC analysis was 304.5 μ mol/l (sensitivity 67.46%, specificity 65.06%). SUA low- or high-levels were associated with gender (P< 0.001), smoking status (P< 0.001), pN statues (P= 0.003) and TNM stage (P= 0.010). SUA levels, tumor differentiation and pTNM stage were independent predictors of ESCC patient survival in a multivariate analysis. CONCLUSIONS The pre-operative level of SUA is an independent prognostic predictor in ESCC patients who undergo R0 esophagectomy and patients with higher SUA level may have an unfavorable survival probability.
Collapse
Affiliation(s)
- You-Fang Chen
- Department of Anesthesiology, Cancer Center, Sun Yat-Sen University, State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
| | - Qiang Li
- Department of Anesthesiology, Cancer Center, Sun Yat-Sen University, State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
| | - Dong-Tai Chen
- Department of Anesthesiology, Cancer Center, Sun Yat-Sen University, State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
| | - Jia-Hao Pan
- Department of Anesthesiology, Cancer Center, Sun Yat-Sen University, State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
| | - Yong-Hua Chen
- Department of Anesthesiology, Cancer Center, Sun Yat-Sen University, State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
| | - Zhe-Sheng Wen
- Department of Thoracic Oncology, Cancer Center, Sun Yat-Sen University, State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
| | - Wei-An Zeng
- Department of Anesthesiology, Cancer Center, Sun Yat-Sen University, State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
| |
Collapse
|
29
|
The metabolomic signature of hematologic malignancies. Leuk Res 2016; 49:22-35. [PMID: 27526405 DOI: 10.1016/j.leukres.2016.08.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Revised: 08/04/2016] [Accepted: 08/08/2016] [Indexed: 12/17/2022]
Abstract
The ongoing accumulation of knowledge raises hopes that understanding tumor metabolism will provide new ways for predicting, diagnosing, and even treating cancers. Some metabolic biomarkers are at present routinely utilized to diagnose cancer and metabolic alterations of tumors are being confirmed as therapeutic targets. The growing utilization of metabolomics in clinical research may rapidly turn it into one of the most potent instruments used to detect and fight tumor. In fact, while the current state and trends of high throughput metabolomics profiling focus on the purpose of discovering biomarkers and hunting for metabolic mechanism, a prospective direction, namely reprogramming metabolomics, highlights the way to use metabolomics approach for the aim of treatment of disease by way of reconstruction of disturbed metabolic pathways. In this review, we present an ample summary of the current clinical appliances of metabolomics in hematological malignancies.
Collapse
|
30
|
Battelli MG, Polito L, Bortolotti M, Bolognesi A. Xanthine oxidoreductase in cancer: more than a differentiation marker. Cancer Med 2016; 5:546-57. [PMID: 26687331 PMCID: PMC4799950 DOI: 10.1002/cam4.601] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 11/05/2015] [Accepted: 11/08/2015] [Indexed: 12/17/2022] Open
Abstract
Human xanthine oxidoreductase (XOR) catalyzes the last two steps of purine catabolism and is present in two interconvertible forms, which may utilize O2 or NAD(+) as electron acceptors. In addition to uric acid, XOR products may comprise reactive oxygen and nitrogen species that have many biologic effects, including inflammation, endothelial dysfunction, and cytotoxicity, as well as mutagenesis and induction of proliferation. XOR is strictly modulated at the transcriptional and post-translational levels, and its expression and activity are highly variable in cancer. Xanthine oxidoreductase (XOR) expression has been negatively associated with a high malignity grade and a worse prognosis in neoplasms of the breast, liver, gastrointestinal tract, and kidney, which normally express a high level of XOR protein. However, the level of XOR expression may be associated with a worse outcome in cancer of low XOR-expressing cells, in relation to the inflammatory response elicited through the tissue damage induced by tumor growth. Xanthine oxidoreductase (XOR) has been implicated in the process of oncogenesis either directly because it is able to catalyze the metabolic activation of carcinogenic substances or indirectly through the action of XOR-derived reactive oxygen and nitrogen species. The role of uric acid is characterized by both oxidant and antioxidant action; thus, it is still debatable whether control of uricemia may be helpful to improve the outcomes of tumor illness.
Collapse
Affiliation(s)
- Maria Giulia Battelli
- Department of Experimental, Diagnostic and Specialty Medicine – DIMESAlma Mater Studiorum – University of Bologna, General Pathology UnitVia S. Giacomo 1440126BolognaItaly
| | - Letizia Polito
- Department of Experimental, Diagnostic and Specialty Medicine – DIMESAlma Mater Studiorum – University of Bologna, General Pathology UnitVia S. Giacomo 1440126BolognaItaly
| | - Massimo Bortolotti
- Department of Experimental, Diagnostic and Specialty Medicine – DIMESAlma Mater Studiorum – University of Bologna, General Pathology UnitVia S. Giacomo 1440126BolognaItaly
| | - Andrea Bolognesi
- Department of Experimental, Diagnostic and Specialty Medicine – DIMESAlma Mater Studiorum – University of Bologna, General Pathology UnitVia S. Giacomo 1440126BolognaItaly
| |
Collapse
|
31
|
Sakuma S, Abe M, Kohda T, Fujimoto Y. Hydrogen peroxide generated by xanthine/xanthine oxidase system represses the proliferation of colorectal cancer cell line Caco-2. J Clin Biochem Nutr 2014; 56:15-9. [PMID: 25678748 PMCID: PMC4306658 DOI: 10.3164/jcbn.14-34] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 05/07/2014] [Indexed: 01/05/2023] Open
Abstract
The twin character of reactive oxygen species is substantiated by a growing body of evidence that reactive oxygen species within cells act as inducers and accelerators of the oncogenic phenotype of cancer cells, while reactive oxygen species can also induce cancer cell death and can therefore function as anti-tumorigenic species. The aim of this study was to assess a possible influence of xanthine/xanthine oxidase on the proliferation of colorectal cancer cell line Caco-2. xanthine/xanthine oxidase (2.5 µM/0.25 mU/ml–25 µM/2.5 mU/ml) dose-dependently inhibited the proliferation of Caco-2 cells. Experiments utilizing reactive oxygen species scavengers (superoxide dismutase, catalase and mannitol) and exogenous hydrogen peroxide revealed a major role of hydrogen peroxide in the xanthine/xanthine oxidase effect. Investigations utilizing annexin V-fluorescein/PI assay using flow cytometry, and the lactate dehydrogenase extracellular release assay indicated that hydrogen peroxide induced necrosis, but not apoptosis, in Caco-2 cells. These results suggest that hydrogen peroxide generated by xanthine/xanthine oxidase has the potential to suppress colorectal cancer cell proliferation.
Collapse
Affiliation(s)
- Satoru Sakuma
- Laboratory of Physiological Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Muneyuki Abe
- Laboratory of Physiological Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Tetsuya Kohda
- Laboratory of Physiological Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Yohko Fujimoto
- Laboratory of Physiological Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| |
Collapse
|
32
|
Tocco A, Pinson B, Thiébaud P, Thézé N, Massé K. Comparative genomic and expression analysis of the adenosine signaling pathway members in Xenopus. Purinergic Signal 2014; 11:59-77. [PMID: 25319637 DOI: 10.1007/s11302-014-9431-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 09/30/2014] [Indexed: 12/13/2022] Open
Abstract
Adenosine is an endogenous molecule that regulates many physiological processes via the activation of four specific G-protein-coupled ADORA receptors. Extracellular adenosine may originate either from the hydrolysis of released ATP by the ectonucleotidases or from cellular exit via the equilibrative nucleoside transporters (SLC29A). Adenosine extracellular concentration is also regulated by its successive hydrolysis into uric acid by membrane-bound enzymes or by cell influx via the concentrative nucleoside transporters (SLC28A). All of these members constitute the adenosine signaling pathway and regulate adenosine functions. Although the roles of this pathway are quite well understood in adults, little is known regarding its functions during vertebrate embryogenesis. We have used Xenopus laevis as a model system to provide a comparative expression map of the different members of this pathway during vertebrate development. We report the characterization of the different enzymes, receptors, and nucleoside transporters in both X. laevis and X. tropicalis, and we demonstrate by phylogenetic analyses the high level of conservation of these members between amphibians and mammals. A thorough expression analysis of these members during development and in the adult frog reveals that each member displays distinct specific expression patterns. These data suggest potentially different developmental roles for these proteins and therefore for extracellular adenosine. In addition, we show that adenosine levels during amphibian embryogenesis are very low, confirming that they must be tightly controlled for normal development.
Collapse
Affiliation(s)
- Alice Tocco
- Université de Bordeaux, CIRID UMR 5164, F-33000, Bordeaux, France
| | | | | | | | | |
Collapse
|
33
|
Structural and functional insights into the catalytic inactivity of the major fraction of buffalo milk xanthine oxidoreductase. PLoS One 2014; 9:e87618. [PMID: 24498153 PMCID: PMC3909206 DOI: 10.1371/journal.pone.0087618] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 12/26/2013] [Indexed: 12/13/2022] Open
Abstract
Background Xanthine oxidoreductase (XOR) existing in two interconvertible forms, xanthine dehydrogenase (XDH) and xanthine oxidase (XO), catabolises xanthine to uric acid that is further broken down to antioxidative agent allantoin. XOR also produces free radicals serving as second messenger and microbicidal agent. Large variation in the XO activity has been observed among various species. Both hypo and hyper activity of XOR leads to pathophysiological conditions. Given the important nutritional role of buffalo milk in human health especially in south Asia, it is crucial to understand the functional properties of buffalo XOR and the underlying structural basis of variations in comparison to other species. Methods and Findings Buffalo XO activity of 0.75 U/mg was almost half of cattle XO activity. Enzymatic efficiency (kcat/Km) of 0.11 sec−1 µM−1 of buffalo XO was 8–10 times smaller than that of cattle XO. Buffalo XOR also showed lower antibacterial activity than cattle XOR. A CD value (Δε430 nm) of 46,000 M−1 cm−1 suggested occupancy of 77.4% at Fe/S I centre. Buffalo XOR contained 0.31 molybdenum atom/subunit of which 48% existed in active sulfo form. The active form of XO in buffalo was only 16% in comparison to ∼30% in cattle. Sequencing revealed 97.4% similarity between buffalo and cattle XOR. FAD domain was least conserved, while metal binding domains (Fe/S and Molybdenum) were highly conserved. Homology modelling of buffalo XOR showed several variations occurring in clusters, especially close to FAD binding pocket which could affect NAD+ entry in the FAD centre. The difference in XO activity seems to be originating from cofactor deficiency, especially molybdenum. Conclusion A major fraction of buffalo milk XOR exists in a catalytically inactive form due to high content of demolybdo and desulfo forms. Lower Fe/S content and structural factors might be contributing to lower enzymatic efficiency of buffalo XOR in a minor way.
Collapse
|
34
|
Comparative metabolomics of estrogen receptor positive and estrogen receptor negative breast cancer: alterations in glutamine and beta-alanine metabolism. J Proteomics 2013; 94:279-88. [DOI: 10.1016/j.jprot.2013.10.002] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 08/26/2013] [Accepted: 10/01/2013] [Indexed: 12/28/2022]
|
35
|
Fini MA, Elias A, Johnson RJ, Wright RM. Contribution of uric acid to cancer risk, recurrence, and mortality. Clin Transl Med 2012; 1:16. [PMID: 23369448 PMCID: PMC3560981 DOI: 10.1186/2001-1326-1-16] [Citation(s) in RCA: 145] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Accepted: 07/17/2012] [Indexed: 02/07/2023] Open
Abstract
Two risk factors for the development and progression of cancers that are amenable to life style modification are chronic inflammation and the metabolic syndrome. This review proposes two new targets that may mechanistically integrate inflammation and metabolic syndrome, have been largely ignored, and are known to be druggable. Recent evidence has demonstrated that elevated serum uric acid (hyperuricemia) is associated with excess cancer risk, recurrence, and mortality. Although uric acid (UA) can function as a systemic antioxidant, its pro-inflammatory properties have been postulated to play an important role in the pathogenesis of cancer. Furthermore, obesity, Type 2 Diabetes Mellitus (T2DM), and the metabolic syndrome (MetS) are also associated with excess cancer, chronic inflammation, and with hyperuricemia, suggesting that UA may represent an important link between these disorders and the development of cancer. While pharmacological modulation of hyperuricemia could in principal augment anti-cancer therapeutic strategies, some cancer cells express low intracellular levels of the enzyme Xanthine Oxidoreductase (XOR) that are associated with increased cancer aggressiveness and poor clinical outcome. Thus, systemic pharmacological inhibition of XOR may worsen clinical outcome, and specific strategies that target serum uric acid (SUA) without inhibiting tumor cell XOR may create new therapeutic opportunities for cancer associated with hyperuricemia. This review will summarize the evidence that elevated SUA may be a true risk factor for cancer incidence and mortality, and mechanisms by which UA may contribute to cancer pathogenesis will be discussed in the hope that these will identify new opportunities for cancer management.
Collapse
Affiliation(s)
- Mehdi A Fini
- Department of Medicine, Pulmonary Division and Webb-Waring Center, University of Colorado Denver, Anschutz Medical Campus, V20, Room 3105, Mail stop C-322 12850 East Montview Boulevard, Aurora, CO, 80045-0511, USA.
| | | | | | | |
Collapse
|
36
|
Konno H, Minamiya Y, Saito H, Imai K, Kawaharada Y, Motoyama S, Ogawa JI. Acquired xanthine dehydrogenase expression shortens survival in patients with resected adenocarcinoma of lung. Tumour Biol 2012; 33:1727-32. [PMID: 22678977 DOI: 10.1007/s13277-012-0431-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Accepted: 05/28/2012] [Indexed: 11/28/2022] Open
Abstract
Xanthine dehydrogenase (XDH), also known as xanthine oxidoreductase (XOR), has long been recognized as the key enzyme in the catabolism of purines, oxidizing hypoxanthine into xanthine and then xanthine into uric acid. In addition, levels of XDH expression are reportedly related to the prognosis of patients with malignant tumors, though the relationship between the clinicopathological features of lung cancer and XDH is not fully understood. We therefore used semiquantitative real-time reverse transcription polymerase chain reaction to assess expression of XDH mRNA in tumor samples from 88 patients with adenocarcinoma of the lung. We then correlated XDH mRNA levels with known clinicopathological factors. We found that the 5-year overall survival rate among patients strongly expressing XDH was significantly poorer than among those expressing lower levels of XDH (P < 0.001; log-rank test). Normal lung tissue does not express XDH. Multivariate Cox proportional hazard analyses revealed that being male (hazard ratio, 3.14; 95 % confidence interval (CI), 1.45-7.07; P = 0.004), nodal metastasis positivity (hazard ratio, 5.74; 95 % CI, 1.94-19.3; P = 0.001), and high XDH expression (hazard ratio, 2.33; 95 % CI, 1.11-5.02; P = 0.026) were all independent factors affecting 5-year disease-free survival. In conclusion, high tumoral XDH expression is an independent predictor of a poor prognosis in patients with adenocarcinoma of the lung.
Collapse
Affiliation(s)
- Hayato Konno
- Division of Chest Surgery, Akita University Hospital, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita City, 010-8543, Japan
| | | | | | | | | | | | | |
Collapse
|
37
|
Significance of Loss of Heterozygosity in Predicting Axillary Lymph Node Metastasis of Invasive Ductal Carcinoma of the Breast. Appl Immunohistochem Mol Morphol 2012; 20:116-23. [DOI: 10.1097/pai.0b013e31822afce2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
|
38
|
Linder N, Bützow R, Lassus H, Lundin M, Lundin J. Decreased xanthine oxidoreductase (XOR) is associated with a worse prognosis in patients with serous ovarian carcinoma. Gynecol Oncol 2011; 124:311-8. [PMID: 22044687 DOI: 10.1016/j.ygyno.2011.10.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 10/20/2011] [Accepted: 10/25/2011] [Indexed: 01/19/2023]
Abstract
OBJECTIVE Xanthine oxidoreductase (XOR) is a key enzyme in the degradation of DNA, RNA and high-energy phosphates. In the human cancers previously studied, down-regulated XOR identifies patients with unfavorable prognosis. We assessed the clinical relevance of XOR expression in serous ovarian cancer. METHODS XOR protein was determined in tissue microarrays from 474 patients with serous ovarian cancer and analyzed with respect to clinical parameters and survival. RESULTS XOR was down regulated in 64% of the tumors as compared to the corresponding normal tissue. Decreased XOR was associated with a poorly differentiated tumor and an abnormal p53 expression, but not with age at diagnosis, FIGO stage, Ki-67 or tumor size. XOR expression was associated with outcome, and the five year ovarian cancer specific survival in patients with strong XOR expression was 59% compared to 44% in those with moderate (hazard ratio, HR; 1.44; P=0.0083) and 26% in patients with lack of XOR (HR, 2.07; P=0.0003). This was also true in patients whose tumors were highly differentiated (HR, 3.67; P=0.008) and in patients with a small (<1cm) residual tumor (HR, 2.62; P=0.017), and in patients whose tumors show a low Ki-67 protein expression (HR, 3.79; P<0.0001). In multivariate survival analysis, absence of XOR emerged as an independent prognostic factor (HR, 1.82; P=0.015). CONCLUSIONS Decreased XOR is associated with poorer prognosis in patients with serous ovarian cancer especially in those with an otherwise more favorable prognostic profile.
Collapse
Affiliation(s)
- Nina Linder
- FIMM, Institute for Molecular Medicine Finland, P.O. Box 20, FI-00014 University of Helsinki, Finland.
| | | | | | | | | |
Collapse
|
39
|
Do Atherosclerosis and Obesity-Associated Susceptibility to Cancer Share Causative Link to oxLDL and LOX-1? Cardiovasc Drugs Ther 2011; 25:477-87. [DOI: 10.1007/s10557-011-6330-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
40
|
Agarwal A, Banerjee A, Banerjee UC. Xanthine oxidoreductase: a journey from purine metabolism to cardiovascular excitation-contraction coupling. Crit Rev Biotechnol 2011; 31:264-80. [PMID: 21774633 DOI: 10.3109/07388551.2010.527823] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Xanthine oxidoreductase (XOR) is a ubiquitous complex cytosolic molybdoflavoprotein which controls the rate limiting step of purine catabolism by converting xanthine to uric acid. It is known that optimum concentrations of uric acid (UA) and reactive oxygen species (ROS) are necessary for normal functioning of the body. The ability of XOR to perform detoxification reactions, and to synthesize UA and reactive oxygen species (ROS) makes it a versatile intra- and extra-cellular protective "housekeeping enzyme". It is also an important component of the innate immune system. The enzyme is a target of drugs against gout and hyperuricemia and the protein is of major interest as it is associated with ischemia reperfusion (I/R) injury, vascular disorders in diabetes, cardiovascular disorders, adipogenesis, metabolic syndrome, cancer, and many other disease conditions. Xanthine oxidoreductase in conjugation with antibodies has been shown to have an anti-tumor effect due to its ability to produce ROS, which in turn reduces the growth of cancer tissues. Apart from this, XOR in association with nitric oxide synthase also participates in myocardial excitation-contraction coupling. Although XOR was discovered over 100 years ago, its physiological and pathophysiological roles are still not clearly elucidated. In this review, various physiological and pathophysiological functional aspects of XOR and its association with various forms of cancer are discussed in detail.
Collapse
Affiliation(s)
- Amit Agarwal
- Department of Pharmaceutical Technology (Biotechnology), National Institute of Pharmaceutical Education and Research, Punjab, India
| | | | | |
Collapse
|
41
|
Fini MA, Monks J, Farabaugh SM, Wright RM. Contribution of xanthine oxidoreductase to mammary epithelial and breast cancer cell differentiation in part modulates inhibitor of differentiation-1. Mol Cancer Res 2011; 9:1242-54. [PMID: 21775420 DOI: 10.1158/1541-7786.mcr-11-0176] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Loss of xanthine oxidoreductase (XOR) has been linked to aggressive breast cancer in vivo and to breast cancer cell aggressiveness in vitro. In the present study, we hypothesized that the contribution of XOR to the development of the normal mammary gland may underlie its capacity to modulate breast cancer. We contrasted in vitro and in vivo developmental systems by differentiation marker and microarray analyses. Human breast cancer microarray was used for clinical outcome studies. The role of XOR in differentiation and proliferation was examined in human breast cancer cells and in a mouse xenograft model. Our data show that XOR was required for functional differentiation of mammary epithelial cells both in vitro and in vivo. Poor XOR expression was observed in a mouse ErbB2 breast cancer model, and pharmacologic inhibition of XOR increased breast cancer tumor burden in mouse xenograft. mRNA microarray analysis of human breast cancer revealed that low XOR expression was significantly associated with time to tumor relapse. The opposing expression of XOR and inhibitor of differentiation-1 (Id1) during HC11 differentiation and mammary gland development suggested a potential functional relationship. While overexpression of Id1 inhibited HC11 differentiation and XOR expression, XOR itself modulated expression of Id1 in differentiating HC11 cells. Overexpression of XOR both inhibited Id1-induced proliferation and -stimulated differentiation of Heregulin-β1-treated human breast cancer cells. These results show that XOR is an important functional component of differentiation whose diminished expression contributes to breast cancer aggressiveness, and they support XOR as both a breast cancer biomarker and a target for pharmacologic activation in therapeutic management of aggressive breast cancer.
Collapse
Affiliation(s)
- Mehdi A Fini
- Webb-Waring Center, Department of Medicine, University of Colorado Denver, Campus Box C-322, 12850 East Montview Boulevard, Aurora, CO 80045, USA
| | | | | | | |
Collapse
|
42
|
Kim AW, Batus M, Myint R, Fidler MJ, Basu S, Bonomi P, Faber LP, Wightman SC, Warren WH, McIntire M, Arvanitis LD, Gattuso P, Xu X, Liptay MJ. Prognostic value of xanthine oxidoreductase expression in patients with non-small cell lung cancer. Lung Cancer 2010; 71:186-90. [PMID: 20570389 DOI: 10.1016/j.lungcan.2010.05.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Revised: 04/18/2010] [Accepted: 05/04/2010] [Indexed: 01/09/2023]
Abstract
BACKGROUND Xanthine oxidoreductase (XOR) is a rate-limiting enzyme in the purine metabolism pathway. Lack of XOR expression is associated with unfavorable clinical outcomes. The objective of this study was to correlate XOR expression with prognosis in surgically resected non-small cell lung cancer (NSCLC). METHODS Immunohistochemical staining was performed on deparaffinized specimens from 82 patients with stage I-IV NSCLC using a polyclonal anti-XOR rabbit antibody. Cytoplasmic XOR staining was scored on frequency and intensity scales from 0 to 4 with low expression defined as 0-1 and high expression defined as ≥2-4. XOR immunostaining was correlated with clinical characteristics and outcomes and analyzed using Kaplan-Meier and Cox proportional hazard methods. RESULTS Positive XOR expression was observed in 53/82 cases (65%). Patients with high XOR frequency had a longer median survival of 3053 days (95% CI: 2190-3916) vs. 592 days (95% CI: 492-692 days) for patients with low XOR frequency, p=0.0089, HR 0.47. Neither XOR intensity nor the overall score of XOR frequency multiplied by XOR intensity demonstrated any significant association with survival. Surgical resection was performed on 61 patients of which 34 (56%) received adjuvant chemotherapy. Patients who received adjuvant chemotherapy with low XOR expression, 15/34 (44%) had a shortened median survival compared with patients who received adjuvant chemotherapy with high XOR expression (543 days vs. 2023 days, respectively, p=0.007 and HR=0.33). CONCLUSION Low XOR expression was associated with shortened survival and also conferred a worse prognosis for patients with NSCLC who received adjuvant chemotherapy. Further studies of the XOR pathway are warranted to validate and mechanistically explain these outcomes.
Collapse
Affiliation(s)
- Anthony W Kim
- Section of Thoracic Surgery, Yale University School of Medicine, New Haven, CT 06520, United States.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Snodgrass RG, Collier AC, Coon AE, Pritsos CA. Mitomycin C inhibits ribosomal RNA: a novel cytotoxic mechanism for bioreductive drugs. J Biol Chem 2010; 285:19068-75. [PMID: 20418373 DOI: 10.1074/jbc.m109.040477] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Mitomycin C (MMC) is a commonly used and extensively studied chemotherapeutic agent requiring biological reduction for activity. Damage to nuclear DNA is thought to be its primary mechanism of cell death. Due to a lack of evidence for significant MMC activation in the nucleus and for in vivo studies demonstrating the formation of MMC-DNA adducts, we chose to investigate alternative nucleic acid targets. Real-time reverse transcription-PCR was used to determine changes in mitochondrial gene expression induced by MMC treatment. Although no consistent effects on mitochondrial mRNA expression were observed, complementary results from reverse transcription-PCR experiments and gel-shift and binding assays demonstrated that MMC rapidly decreased the transcript levels of 18S ribosomal RNA in a concentration-dependent manner. Under hypoxic conditions, transcript levels of 18S rRNA decreased by 1.5-fold compared with untreated controls within 30 min. Recovery to base line required several hours, indicating that de novo synthesis of 18S was necessary. Addition of MMC to an in vitro translation reaction significantly decreased protein production in the cell-free system. Functional assays performed using a luciferase reporter construct in vivo determined that protein translation was inhibited, further confirming this mechanism of toxicity. The interaction of MMC with ribosomal RNA and subsequent inhibition of protein translation is consistent with mechanisms proposed for other natural compounds.
Collapse
Affiliation(s)
- Ryan G Snodgrass
- Department of Nutrition, University of Nevada, Reno, Nevada 89557, USA
| | | | | | | |
Collapse
|
44
|
Park S, Lee KM, Ju JH, Kim J, Noh DY, Lee T, Shin I. Protein expression profiling of primary mammary epithelial cells derived from MMTV-neu mice revealed that HER2/NEU-driven changes in protein expression are functionally clustered. IUBMB Life 2010; 62:41-50. [PMID: 19960538 DOI: 10.1002/iub.276] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
MMTV-neu transgenic mice overexpressing NEU in their mammary glands develop tumor after 6 months of age. To find a novel protein biomarker using this mouse model, we identified and characterized the proteins that were differently expressed between primary mammary epithelial cells from 2 months old MMTV-neu heterozygote mice and wild type (WT) littermates using two-dimensional digest (ChemDigest/Trypsin)-LC-MS/MS. The differentially expressed proteins were selected and analyzed using DAVID Bioinformatics resource. The proteins involved in anti-apoptosis, purine metabolism, ribosome and proteasome functions were upregulated, whereas cell adhesion-related proteins were downregulated in PMECs from MMTV-neu mice when compared with WT PMECs. The results indicate that several functional units are coregulated by HER2/NEU. We hypothesize that these changes in the cellular proteome may be responsible for early onset of HER2/NEU-driven tumorigenesis.
Collapse
Affiliation(s)
- Sungwoo Park
- Department of Life Science, Hanyang University, Seoul 133-791, Korea
| | | | | | | | | | | | | |
Collapse
|
45
|
Identification of hypoxanthine as a urine marker for non-Hodgkin lymphoma by low-mass-ion profiling. BMC Cancer 2010; 10:55. [PMID: 20175931 PMCID: PMC2841663 DOI: 10.1186/1471-2407-10-55] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2009] [Accepted: 02/23/2010] [Indexed: 12/31/2022] Open
Abstract
Background Non-Hodgkin lymphoma (NHL) is a hematologic malignancy for which good diagnostic markers are lacking. Despite continued improvement in our understanding of NHL, efforts to identify diagnostic markers have yielded dismal results. Here, we translated low-mass-ion information in urine samples from patients with NHL into a diagnostic marker. Methods To minimize experimental error, we tested variable parameters before MALDI-TOF analysis of low-mass ions in urine. Urine from 30 controls and 30 NHL patients was analyzed as a training set for NHL prediction. All individual peak areas were normalized to total area up to 1000 m/z. The training set analysis was repeated four times. Low-mass peaks that were not affected by changes in experimental conditions were collected using MarkerView™ software. Human Metabolome Database (HMDB) searches and ESI LC-MS/MS analyses were used to identify low-mass ions that exhibited differential patterns in control and NHL urines. Identified low-mass ions were validated in a blinded fashion in 95 controls and 66 NHL urines to determine their ability to discriminate NHL patients from controls. Results The 30 highest-ranking low-mass-ion peaks were selected from the 60-urine training set, and three low-mass-ion peaks with high intensity were selected for identification. Of these, a 137.08-m/z ion showed lower mass-peak intensity in urines of NHL patients, a result that was validated in a 161-urine blind validation set (95 controls and 66 NHL urines). The 130.08-m/z ion was identified from HMDB searches and ESI LC-MS/MS analyses as hypoxanthine (HX). The HX concentration in urines of NHL patients was significantly decreased (P < 0.001) and was correlated with the mass-peak area of the 137.08-m/z ion. At an HX concentration cutoff of 17.4 μM, sensitivity and specificity were 79.2% and 78.4%, respectively. Conclusions The present study represents a good example of low-mass-ion profiling in the setting of disease screening using urine. This technique can be a powerful non-invasive diagnostic tool with high sensitivity and specificity for NHL screening. Furthermore, HX identified in the study may be a useful single urine marker for NHL screening.
Collapse
|
46
|
On-chip assay for determining the inhibitory effects and modes of action of drugs against xanthine oxidase. J Pharm Biomed Anal 2010; 51:1-6. [DOI: 10.1016/j.jpba.2009.07.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2009] [Revised: 07/15/2009] [Accepted: 07/16/2009] [Indexed: 12/23/2022]
|
47
|
Taibi G, Carruba G, Miceli V, Cocciadiferro L, Nicotra CMA. Estradiol decreases xanthine dehydrogenase enzyme activity and protein expression in non-tumorigenic and malignant human mammary epithelial cells. J Cell Biochem 2009; 108:688-92. [PMID: 19693777 DOI: 10.1002/jcb.22305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The retinoic acid deficiency in breast tumour epithelial cells has been ascribed to an insufficient expression of either the enzyme(s) involved in its biosynthesis or the cellular retinol binding protein (CRBP) or both. In an attempt to define the mechanisms underpinning retinoic acid deficiency in these cell model systems, we have investigated the potential regulatory effect of oestrogen (17beta-estradiol) on one key player in retinoic acid biosynthesis, the xanthine dehydrogenase (XDH). This enzyme is consistently expressed and very active in non-malignant human mammary epithelial cells (HMEC), as opposed to tumour MDA-MB231 and MCF7 cells. In these latter two cell lines, as opposed to HMEC cells, we observe a residual ability of XDH to produce retinoic acid from retinaldehyde and the inability to use retinol, as a consequence of a deficit in CRBP. In addition, estradiol treatment of MDA-MB231 and MCF7 cells decreases protein expression and activity of the enzyme, with no modification of the mRNA transcript levels, eventually leading to deteriorate further retinoic acid production.
Collapse
Affiliation(s)
- Gennaro Taibi
- Department of Experimental Oncology and Clinical Applications, University of Palermo, Palermo, Italy
| | | | | | | | | |
Collapse
|
48
|
Fini MA, Orchard-Webb D, Kosmider B, Amon JD, Kelland R, Shibao G, Wright RM. Migratory activity of human breast cancer cells is modulated by differential expression of xanthine oxidoreductase. J Cell Biochem 2009; 105:1008-26. [PMID: 18767115 DOI: 10.1002/jcb.21901] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Xanthine oxidoreductase (XOR) may exert an important, but poorly defined, role in the pathogenesis of breast cancer (BC). Loss of XOR expression was linked to aggressive BC, and recent clinical observations have suggested that decreasing XOR may be functionally linked to BC aggressiveness. The goal of the present investigation was to determine whether the decreased XOR observed in clinically aggressive BC was an intrinsic property of highly invasive mammary epithelial cells (MEC). Expression of XOR was investigated using HC11 mouse MEC, HB4a and MCF-10A normal human MEC, and several human mammary tumor cells including MCF-7 and MDA-MB-231. Consistent with clinical observations, data shown here revealed high levels of XOR in normal HC11 and MCF-10A cells that was markedly reduced in highly invasive mammary tumor cells. The contribution of XOR to tumor cell migration in vitro was investigated using MDA-MB-231 and MCF-7 cells and clonally selected derivatives of HC11 that exhibit either weak or strong migration in vitro. We observed that over-expression of an XOR cDNA in MDA-MB-231 and in HC11-C24, both possessing weak XOR expression and high migratory capacity, inhibited their migration in vitro. Conversely, pharmacological inhibition of XOR in MCF-7 and HC11-C4, both possessing high XOR expression and weak migratory capacity, stimulated their migration in vitro. Further experiments suggested that XOR derived ROS mediated this effect and also modulated COX-2 and MMP levels and function. These data demonstrate a functional link between XOR expression and MEC migration and suggest a potential role for XOR in suppressing BC pathogenesis.
Collapse
Affiliation(s)
- Mehdi A Fini
- Webb-Waring Institute for Cancer, Aging and Antioxidant Research, 4200 East 9th Ave, Denver, Colorado 80262, USA
| | | | | | | | | | | | | |
Collapse
|
49
|
Linder N, Martelin E, Lundin M, Louhimo J, Nordling S, Haglund C, Lundin J. Xanthine oxidoreductase - clinical significance in colorectal cancer and in vitro expression of the protein in human colon cancer cells. Eur J Cancer 2008; 45:648-55. [PMID: 19112016 DOI: 10.1016/j.ejca.2008.10.036] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2008] [Revised: 10/02/2008] [Accepted: 10/15/2008] [Indexed: 11/27/2022]
Abstract
Xanthine oxidoreductase (XOR) is a key enzyme in degradation of DNA and RNA, and has previously been shown to be decreased in aggressive breast and gastric cancer. In this study, XOR expression was assessed in tissue microarray specimens of 478 patients with colorectal cancer and related to clinical parameters. In addition, we performed in vitro studies of XOR activity, protein and mRNA in colon cancer cells (Caco-2). Results from the tissue expression analyses show that XOR was decreased in 62% and undetectable in 22% of the tumours as compared to normal tissue. Loss of XOR was associated with poor grade of differentiation (p=0.006) and advanced Dukes stage (p=0.03). In multivariate survival analysis, XOR was a prognostic factor (p=0.008), independent of Dukes stage, histological grade, age and tumour location. The in vitro analyses show that XOR is not measurable in undifferentiated Caco-2 cells, but appears and increases with differentiation. We conclude that XOR expression is associated with histological grade of differentiation and extent of disease in colorectal cancer, and it provides significant prognostic information independently of established factors.
Collapse
Affiliation(s)
- Nina Linder
- Department of Oncology, Institute of Clinical Medicine, University of Helsinki, Haartmaninkatu 4, PO Box 105, 00029 Helsinki, Finland
| | | | | | | | | | | | | |
Collapse
|
50
|
Linder N, Haglund C, Lundin M, Nordling S, Ristimäki A, Kokkola A, Mrena J, Wiksten JP, Lundin J. Decreased xanthine oxidoreductase is a predictor of poor prognosis in early-stage gastric cancer. J Clin Pathol 2006; 59:965-71. [PMID: 16935971 PMCID: PMC1860491 DOI: 10.1136/jcp.2005.032524] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Xanthine oxidoreductase (XOR) is a key enzyme in the degradation of DNA, RNA and high-energy phosphates. About half of the patients with breast cancer have a decrease in XOR expression. Patients with breast cancer with unfavourable prognosis are independently identified by the loss of XOR. AIM To assess the clinical relevance of XOR expression in gastric cancer. METHODS XOR levels were studied by immunohistochemistry in tissue microarray specimens of 337 patients with gastric cancer and the relation between XOR expression and a series of clinicopathological variables, as well as disease-specific survival, was assessed. RESULTS XOR was moderately decreased in 41% and was undetectable in another 14% of the tumours compared with the corresponding normal tissue. Decreased XOR was associated with advanced stage, deep tumour penetration, diffusely spread tumour location, positive lymph node status, large tumour size, non-curative disease, cellular aneuploidy, high S-phase fraction and high cyclooxygenase-2 expression, but not with p53 expression or Borrmann classification. Down regulation of XOR was associated with unfavourable outcome, and the cumulative 5-year gastric cancer-specific survival in patients with strong XOR expression was 47%, compared with 22% in those with moderate to negative expression (p<0.001). This was also true in patients with stage I-II (p = 0.01) and lymph node-negative (p = 0.02) disease, as well as in patients with smaller (< or =5 cm) tumours (p = 0.02). CONCLUSION XOR expression in gastric cancer may be a new marker for a more aggressive gastric cancer biology, similar to that previously reported for breast cancer.
Collapse
Affiliation(s)
- N Linder
- Developmental and Reproductive Biology and Hospital for Children and Adolescents, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland.
| | | | | | | | | | | | | | | | | |
Collapse
|