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Choi HJ, Madari S, Huang F. Utilising Endogenous Biomarkers in Drug Development to Streamline the Assessment of Drug-Drug Interactions Mediated by Renal Transporters: A Pharmaceutical Industry Perspective. Clin Pharmacokinet 2024:10.1007/s40262-024-01385-0. [PMID: 38867094 DOI: 10.1007/s40262-024-01385-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/09/2024] [Indexed: 06/14/2024]
Abstract
The renal secretion of many drugs is facilitated by membrane transporters, including organic cation transporter 2, multidrug and toxin extrusion protein 1/2-K and organic anion transporters 1 and 3. Inhibition of these transporters can reduce renal excretion of drugs and thereby pose a safety risk. Assessing the risk of inhibition of these membrane transporters by investigational drugs remains a key focus in the evaluation of drug-drug interactions (DDIs). Current methods to predict DDI risk are based on generating in vitro data followed by a clinical assessment using a recommended exogenous probe substrate for the individual drug transporter. More recently, monitoring plasma-based and urine-based endogenous biomarkers to predict transporter-mediated DDIs in early phase I studies represents a promising approach to facilitate, improve and potentially avoid conventional clinical DDI studies. This perspective reviews the evidence for use of these endogenous biomarkers in the assessment of renal transporter-mediated DDI, evaluates how endogenous biomarkers may help to expand the DDI assessment toolkit and offers some potential knowledge gaps. A conceptual framework for assessment that may complement the current paradigm of predicting the potential for renal transporter-mediated DDIs is outlined.
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Affiliation(s)
- Hee Jae Choi
- Translational Medicine and Clinical Pharmacology, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, CT, 06877, USA
| | - Shilpa Madari
- Translational Medicine and Clinical Pharmacology, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, CT, 06877, USA
| | - Fenglei Huang
- Translational Medicine and Clinical Pharmacology, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, CT, 06877, USA.
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Pilesi E, Tesoriere G, Ferriero A, Mascolo E, Liguori F, Argirò L, Angioli C, Tramonti A, Contestabile R, Volontè C, Vernì F. Vitamin B6 deficiency cooperates with oncogenic Ras to induce malignant tumors in Drosophila. Cell Death Dis 2024; 15:388. [PMID: 38830901 PMCID: PMC11148137 DOI: 10.1038/s41419-024-06787-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 05/26/2024] [Accepted: 05/28/2024] [Indexed: 06/05/2024]
Abstract
Vitamin B6 is a water-soluble vitamin which possesses antioxidant properties. Its catalytically active form, pyridoxal 5'-phosphate (PLP), is a crucial cofactor for DNA and amino acid metabolism. The inverse correlation between vitamin B6 and cancer risk has been observed in several studies, although dietary vitamin B6 intake sometimes failed to confirm this association. However, the molecular link between vitamin B6 and cancer remains elusive. Previous work has shown that vitamin B6 deficiency causes chromosome aberrations (CABs) in Drosophila and human cells, suggesting that genome instability may correlate the lack of this vitamin to cancer. Here we provide evidence in support of this hypothesis. Firstly, we show that PLP deficiency, induced by the PLP antagonists 4-deoxypyridoxine (4DP) or ginkgotoxin (GT), promoted tumorigenesis in eye larval discs transforming benign RasV12 tumors into aggressive forms. In contrast, PLP supplementation reduced the development of tumors. We also show that low PLP levels, induced by 4DP or by silencing the sgllPNPO gene involved in PLP biosynthesis, worsened the tumor phenotype in another Drosophila cancer model generated by concomitantly activating RasV12 and downregulating Discs-large (Dlg) gene. Moreover, we found that RasV12 eye discs from larvae reared on 4DP displayed CABs, reactive oxygen species (ROS) and low catalytic activity of serine hydroxymethyltransferase (SHMT), a PLP-dependent enzyme involved in thymidylate (dTMP) biosynthesis, in turn required for DNA replication and repair. Feeding RasV12 4DP-fed larvae with PLP or ascorbic acid (AA) plus dTMP, rescued both CABs and tumors. The same effect was produced by overexpressing catalase in RasV12 DlgRNAi 4DP-fed larvae, thus allowing to establish a relationship between PLP deficiency, CABs, and cancer. Overall, our data provide the first in vivo demonstration that PLP deficiency can impact on cancer by increasing genome instability, which is in turn mediated by ROS and reduced dTMP levels.
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Affiliation(s)
- Eleonora Pilesi
- Dept. of Biology and Biotechnology "Charles Darwin", Sapienza University of Rome, 00185, Rome, Italy
| | - Giulia Tesoriere
- Dept. of Biology and Biotechnology "Charles Darwin", Sapienza University of Rome, 00185, Rome, Italy
| | - Angelo Ferriero
- Dept. of Biology and Biotechnology "Charles Darwin", Sapienza University of Rome, 00185, Rome, Italy
| | - Elisa Mascolo
- Dept. of Biology and Biotechnology "Charles Darwin", Sapienza University of Rome, 00185, Rome, Italy
| | - Francesco Liguori
- Experimental Neuroscience and Neurological Disease Models, IRCCS Santa Lucia Foundation, 00143, Rome, Italy
- CNR, Institute for Systems Analysis and Computer Science, 00185, Rome, Italy
| | - Luca Argirò
- Dept. of Biology and Biotechnology "Charles Darwin", Sapienza University of Rome, 00185, Rome, Italy
| | - Chiara Angioli
- Dept. of Biology and Biotechnology "Charles Darwin", Sapienza University of Rome, 00185, Rome, Italy
| | - Angela Tramonti
- Institute of Molecular Biology and Pathology, 00185, Rome, Italy
| | - Roberto Contestabile
- Department of Biochemical Sciences "A. Rossi Fanelli", Sapienza, University of Rome, 00185, Rome, Italy
- Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza, University of Rome, 00185, Rome, Italy
| | - Cinzia Volontè
- Experimental Neuroscience and Neurological Disease Models, IRCCS Santa Lucia Foundation, 00143, Rome, Italy
- CNR, Institute for Systems Analysis and Computer Science, 00185, Rome, Italy
| | - Fiammetta Vernì
- Dept. of Biology and Biotechnology "Charles Darwin", Sapienza University of Rome, 00185, Rome, Italy.
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Li F, Liu X, Zhao L, Wang H, Zhang L, Xing W, Cui J. Vitamin B6 Turnover Predicts Long-term Mortality Risk in Patients with Type 2 Diabetes. Curr Dev Nutr 2024; 8:102073. [PMID: 38312433 PMCID: PMC10830545 DOI: 10.1016/j.cdnut.2023.102073] [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: 11/27/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 02/06/2024] Open
Abstract
Background Inflammation can increase vitamin B6 uptake and catabolism. Higher vitamin B6 turnover [4-pyridoxic acid (4-PA)/pyridoxal 5'-phosphate (PLP) ratio], was associated with mortality risk in the general population. Objectives We aimed to investigate the association between 4-PA/PLP and long-term mortality in patients with type 2 diabetes mellitus (T2DM), an inflammatory disease. Methods In this prospective cohort study from the National Health and Nutrition Examination Survey (NHANES) cycles 2005-2010, the concentrations of 4-PA and PLP in plasma were measured using high-performance liquid chromatography, with mortality data updated to 31 December 2019. We included 2074 patients with T2DM aged between 20 and 85 y at baseline. Results There were 739 deaths among 2279 patients with T2DM with a median follow-up of 11.83 y. In the age- and sex-adjusted COX model (model 1), 4-PA/PLP was positively associated with mortality in patients with T2DM [hazard ratio (HR) and 95% confidence interval (CI) highest compared with lowest quartiles: 35.55 (18.29, 69.09); P < 0.001], and in model 3, which was adjusted for demographics as well as inflammation, nutrition, and renal function, high 4-PA/PLP concentrations remained an independent risk factor for mortality in patients with T2DM [HR (95% CI) highest compared with lowest quartiles: 5.03 (2.46, 10.30); P < 0.001]. In restricted cubic spline (RCS), the link between 4-PA/PLP and all-cause mortality displays a positive correlation. Patients with died within the previous 2 y were excluded, the sensitivity analysis had no effect on the association between 4-PA/PLP and mortality in patients with T2DM. Finally, comparable results were found in subgroup analyses of specific-cause mortality. Conclusion Higher vitamin B6 turnover is associated with long-term mortality risk in patients with T2DM. 4-PA/PLP may serve as a convenient prognostic marker in T2DM management.
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Affiliation(s)
| | | | | | - Hongyi Wang
- Cancer Center, The First Hospital of Jilin University, Changchun, China
| | - Lili Zhang
- Cancer Center, The First Hospital of Jilin University, Changchun, China
| | - Weiwei Xing
- Cancer Center, The First Hospital of Jilin University, Changchun, China
| | - Jiuwei Cui
- Cancer Center, The First Hospital of Jilin University, Changchun, China
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Franco CN, Seabrook LJ, Nguyen ST, Yang Y, Campos M, Fan Q, Cicchetto AC, Kong M, Christofk HR, Albrecht LV. Vitamin B 6 is governed by the local compartmentalization of metabolic enzymes during growth. SCIENCE ADVANCES 2023; 9:eadi2232. [PMID: 37682999 PMCID: PMC10491294 DOI: 10.1126/sciadv.adi2232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 08/08/2023] [Indexed: 09/10/2023]
Abstract
Vitamin B6 is a vital micronutrient across cell types and tissues, and dysregulated B6 levels contribute to human disease. Despite its importance, how B6 vitamer levels are regulated is not well understood. Here, we provide evidence that B6 dynamics are rapidly tuned by precise compartmentation of pyridoxal kinase (PDXK), the rate-limiting B6 enzyme. We show that canonical Wnt rapidly led to the accumulation of inactive B6 by shunting cytosolic PDXK into lysosomes. PDXK was modified with methyl-arginine Degron (MrDegron), a protein tag for lysosomes, which enabled delivery via microautophagy. Hyperactive lysosomes resulted in the continuous degradation of PDXK and B6 deficiency that promoted proliferation in Wnt-driven colorectal cancer (CRC) cells. Pharmacological or genetic disruption of the coordinated MrDegron proteolytic pathway was sufficient to reduce CRC survival in cells and organoid models. In sum, this work contributes to the repertoire of micronutrient-regulated processes that enable cancer cell growth and provides insight into the functional impact of B6 deficiencies for survival.
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Affiliation(s)
- Carolina N. Franco
- Department of Pharmaceutical Sciences, School of Pharmacy & Pharmaceutical Sciences, University of California, Irvine, Irvine, CA, USA
| | - Laurence J. Seabrook
- Department of Developmental and Cell Biology, School of Biological Sciences, University of California, Irvine, Irvine, CA, USA
| | - Steven T. Nguyen
- Department of Pharmaceutical Sciences, School of Pharmacy & Pharmaceutical Sciences, University of California, Irvine, Irvine, CA, USA
| | - Ying Yang
- Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA, USA
| | - Melissa Campos
- Department of Developmental and Cell Biology, School of Biological Sciences, University of California, Irvine, Irvine, CA, USA
| | - Qi Fan
- Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA, USA
| | - Andrew C. Cicchetto
- Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Mei Kong
- Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA, USA
| | - Heather R. Christofk
- Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Lauren V. Albrecht
- Department of Pharmaceutical Sciences, School of Pharmacy & Pharmaceutical Sciences, University of California, Irvine, Irvine, CA, USA
- Department of Developmental and Cell Biology, School of Biological Sciences, University of California, Irvine, Irvine, CA, USA
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Weber AM, Ibrahim H, Baxter BA, Kumar R, Maurya AK, Kumar D, Agarwal R, Raina K, Ryan EP. Integrated Microbiota and Metabolite Changes following Rice Bran Intake during Murine Inflammatory Colitis-Associated Colon Cancer and in Colorectal Cancer Survivors. Cancers (Basel) 2023; 15:2231. [PMID: 37190160 PMCID: PMC10136752 DOI: 10.3390/cancers15082231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/29/2023] [Accepted: 03/29/2023] [Indexed: 05/17/2023] Open
Abstract
Dietary rice bran-mediated inhibition of colon carcinogenesis was demonstrated previously for carcinogen-induced rodent models via multiple anti-cancer mechanisms. This study investigated the role of dietary rice bran-mediated changes to fecal microbiota and metabolites over the time course of colon carcinogenesis and compared murine fecal metabolites to human stool metabolic profiles following rice bran consumption by colorectal cancer survivors (NCT01929122). Forty adult male BALB/c mice were subjected to azoxymethane (AOM)/dextran sodium sulfate (DSS)-induced colitis-associated colon carcinogenesis and randomized to control AIN93M (n = 20) or diets containing 10% w/w heat-stabilized rice bran (n = 20). Feces were serially collected for 16S rRNA amplicon sequencing and non-targeted metabolomics. Fecal microbiota richness and diversity was increased in mice and humans with dietary rice bran treatment. Key drivers of differential bacterial abundances from rice bran intake in mice included Akkermansia, Lactococcus, Lachnospiraceae, and Eubacterium xylanophilum. Murine fecal metabolomics revealed 592 biochemical identities with notable changes to fatty acids, phenolics, and vitamins. Monoacylglycerols, dihydroferulate, 2-hydroxyhippurate (salicylurate), ferulic acid 4-sulfate, and vitamin B6 and E isomers significantly differed between rice bran- and control-fed mice. The kinetics of murine metabolic changes by the host and gut microbiome following rice bran consumption complemented changes observed in humans for apigenin, N-acetylhistamine, and ethylmalonate in feces. Increased enterolactone abundance is a novel diet-driven microbial metabolite fecal biomarker following rice bran consumption in mice and humans from this study. Dietary rice bran bioactivity via gut microbiome metabolism in mice and humans contributes to protection against colorectal cancer. The findings from this study provide compelling support for rice bran in clinical and public health guidelines for colorectal cancer prevention and control.
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Affiliation(s)
- Annika M. Weber
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO 80523, USA
| | - Hend Ibrahim
- Department of Medical Biochemistry, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Bridget A. Baxter
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Robin Kumar
- Department of Pharmaceutical Sciences, South Dakota State University, Brookings, SD 57007, USA
| | - Akhilendra K. Maurya
- Department of Pharmaceutical Sciences, University of Colorado Denver—Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Dileep Kumar
- Department of Pharmaceutical Sciences, University of Colorado Denver—Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Rajesh Agarwal
- Department of Pharmaceutical Sciences, University of Colorado Denver—Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Komal Raina
- Department of Pharmaceutical Sciences, South Dakota State University, Brookings, SD 57007, USA
- Department of Pharmaceutical Sciences, University of Colorado Denver—Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Elizabeth P. Ryan
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO 80523, USA
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Effects of autochthonous strains mixture on gut microbiota and metabolic profile in cobia (Rachycentron canadum). Sci Rep 2022; 12:17410. [PMID: 36258024 PMCID: PMC9579153 DOI: 10.1038/s41598-022-19663-x] [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: 04/15/2022] [Accepted: 09/01/2022] [Indexed: 01/12/2023] Open
Abstract
The fish immune system is a topic or subject that offers a unique understanding of defensive system evolution in vertebrate heredity. While gut microbiota plays several roles in fish: well-being, promoting health and growth, resistance to bacterial invasion, regulation of energy absorption, and lipid metabolism. However, studies on fish gut microbiota face practical challenges due to the large number of fish varieties, fluctuating environmental conditions, and differences in feeding habits. This study was carried out to evaluate the impacts of supplemented three autochthonous strains, Bacillus sp. RCS1, Pantoea agglomerans RCS2, and Bacillus cereus RCS3 mixture diet on cobia fish (Rachycentron canadum). Also, chromatography, mass spectrometry and high throughput sequencing were combined to explore composition and metabolite profile of gut microbiota in juvenile cobia fed with supplemented diet. In the trial group, juvenile cobia received diets supplemented with 1 × 1012 CFU mL-1 autochthonous strains for ten weeks and a control diet without supplementation. Juvenile cobia receiving diets supplementation exhibited significantly improved growth than those without additives (control). Haematological indices, such as red blood cells, white blood cells, corpuscular haemoglobin concentration, mean corpuscular volume, haemoglobin, and mean corpuscular haemoglobin, were higher in the supplemented group. Similarly, digestive enzymes (trypsin, lipase, amylase, pepsin and cellulose, activities) activities were higher in supplemented diet with an indigenous isolates mixture. Serum biochemical parameters albumin, globulin, and total protein were significantly higher, while triglyceride, alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, and cholesterol showed no significant difference. On the other hand, glucose was significantly (P < 0.05) higher in the group without supplementation. On gene expression in the midgut, Immunoglobulin, Colony-stimulating factor receptor 1, major histocompatibility complex 1 were up-regulated by native isolates while T cell receptor beta, and Major histocompatibility complex 2 showed no significant difference. Gut bacterial composition was altered in fish receiving supplemented diet with autochthonous strains. Metabolomics also revealed that some metabolic pathways were considerably enriched in fish fed with supplemented diet; pathway analysis based on Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment revealed that differentially expressed metabolites were involved in galactose metabolism, tryptophan metabolism, carbohydrate digestion and absorption, purine metabolism, and ABC transporters. Functional analysis of bacterial community showed that differences in enriched metabolic pathways generally comprised carbohydrate and its metabolites, nucleotide and its metabolites, amino acid and its metabolites, heterocyclic compounds, and tryptamines, cholines, pigments. The current investigation results showed that autochthonous strains mixture has significantly enhanced the growth, survival, and innate and adaptive immunities of juvenile cobia.
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Wang Y, Wu Y, Wei M, Liu X, Zhang P, Zhai C, Chen X. Experimental and Theoretical Study on the Interactions between Dopamine Hydrochloride and Vitamin B6 Hydrochloride. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422100338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Xu L, Fang YJ, Che MM, Abulimiti A, Huang CY, Zhang CX. Association of Serum Pyridoxal-5'-Phosphate, Pyridoxal, and PAr with Colorectal Cancer Risk: A Large-Scale Case-Control Study. Nutrients 2022; 14:nu14122389. [PMID: 35745119 PMCID: PMC9230157 DOI: 10.3390/nu14122389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/04/2022] [Accepted: 06/07/2022] [Indexed: 12/04/2022] Open
Abstract
Previous epidemiological studies have focused on the association of dietary vitamin B6 or circulating pyridoxal-5′-phosphate (PLP) with colorectal cancer risk. This study aimed to investigate the vitamin B6 in relation to colorectal cancer risk combining the biomarkers of PLP, pyridoxal (PL) plus PLP, and PAr (the ratio of 4-pyridoxic acid over the sum of PLP and PL). A large-scale hospital-based case-control study was conducted in Guangdong Province, China, which included 1233 colorectal cancer cases and 1245 sex and age frequency-matched controls. Serum PLP, PL, and 4-pyridoxic acid (PA) were detected with ultra-high-performance liquid chromatography−tandem mass spectrometry. Unconditional logistic regression models were used to assess the odds ratios (ORs) and 95% confidence intervals (95% CIs). Serum PLP and the sum of PLP and PL were inversely associated with colorectal cancer risk, while PAr was positively associated with colorectal cancer risk. Comparing the highest with the lowest quartile, the adjusted OR (95% CI) was 0.26 (0.20−0.33, Ptrend < 0.001) for serum PLP, 0.51 (0.40−0.66, Ptrend < 0.001) for serum PLP plus PL, and 2.90 (2.25−3.75, Ptrend < 0.001) for PAr. Serum PLP and PAr had significantly stronger associations with colorectal cancer risk in the male group and smoking group. Our results supported the protective role of vitamin B6 in colorectal cancer risk among Chinese people. The positive association of PAr with colorectal cancer risk suggested the potential role of inflammation and oxidative stress in colorectal carcinogenesis.
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Affiliation(s)
- Lei Xu
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (L.X.); (M.-M.C.); (A.A.); (C.-Y.H.)
| | - Yu-Jing Fang
- Department of Experimental Research, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, 651 Dongfeng Road East, Guangzhou 510060, China;
| | - Meng-Meng Che
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (L.X.); (M.-M.C.); (A.A.); (C.-Y.H.)
| | - Alinuer Abulimiti
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (L.X.); (M.-M.C.); (A.A.); (C.-Y.H.)
| | - Chu-Yi Huang
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (L.X.); (M.-M.C.); (A.A.); (C.-Y.H.)
| | - Cai-Xia Zhang
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (L.X.); (M.-M.C.); (A.A.); (C.-Y.H.)
- Correspondence: ; Tel.: +86-20-87331943; Fax: +86-20-87330446
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Vitamin B6 Deficiency Promotes Loss of Heterozygosity (LOH) at the Drosophila warts (wts) Locus. Int J Mol Sci 2022; 23:ijms23116087. [PMID: 35682766 PMCID: PMC9181336 DOI: 10.3390/ijms23116087] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 02/04/2023] Open
Abstract
The active form of vitamin B6, pyridoxal 5'-phosphate (PLP), is a cofactor for more than 200 enzymes involved in many metabolic pathways. Moreover, PLP has antioxidant properties and quenches the reactive oxygen species (ROS). Accordingly, PLP deficiency causes chromosome aberrations in Drosophila, yeast, and human cells. In this work, we investigated whether PLP depletion can also cause loss of heterozygosity (LOH) of the tumor suppressor warts (wts) in Drosophila. LOH is usually initiated by DNA breakage in heterozygous cells for a tumor suppressor mutation and can contribute to oncogenesis inducing the loss of the wild-type allele. LOH at the wts locus results in epithelial wts homozygous tumors easily detectable on adult fly cuticle. Here, we found that PLP depletion, induced by two PLP inhibitors, promotes LOH of wts locus producing significant frequencies of wts tumors (~7% vs. 2.3%). In addition, we identified the mitotic recombination as a possible mechanism through which PLP deficiency induces LOH. Moreover, LOH of wts locus, induced by PLP inhibitors, was rescued by PLP supplementation. These data further confirm the role of PLP in genome integrity maintenance and indicate that vitamin B6 deficiency may impact on cancer also by promoting LOH.
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10
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Holowatyj AN, Ose J, Gigic B, Lin T, Ulvik A, Geijsen AJMR, Brezina S, Kiblawi R, van Roekel EH, Baierl A, Böhm J, Bours MJL, Brenner H, Breukink SO, Chang-Claude J, de Wilt JHW, Grady WM, Grünberger T, Gumpenberger T, Herpel E, Hoffmeister M, Keulen ETP, Kok DE, Koole JL, Kosma K, Kouwenhoven EA, Kvalheim G, Li CI, Schirmacher P, Schrotz-King P, Singer MC, van Duijnhoven FJB, van Halteren HK, Vickers K, Vogelaar FJ, Warby CA, Wesselink E, Ueland PM, Ulrich AB, Schneider M, Habermann N, Kampman E, Weijenberg MP, Gsur A, Ulrich CM. Higher vitamin B6 status is associated with improved survival among patients with stage I-III colorectal cancer. Am J Clin Nutr 2022; 116:303-313. [PMID: 35394006 PMCID: PMC9348990 DOI: 10.1093/ajcn/nqac090] [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: 09/27/2021] [Accepted: 04/04/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Folate-mediated 1-carbon metabolism requires several nutrients, including vitamin B6. Circulating biomarker concentrations indicating high vitamin B6 status are associated with a reduced risk of colorectal cancer (CRC). However, little is known about the effect of B6 status in relation to clinical outcomes in CRC patients. OBJECTIVES We investigated survival outcomes in relation to vitamin B6 status in prospectively followed CRC patients. METHODS A total of 2031 patients with stage I-III CRC participated in 6 prospective patient cohorts in the international FOCUS (folate-dependent 1-carbon metabolism in colorectal cancer recurrence and survival) Consortium. Preoperative blood samples were used to measure vitamin B6 status by the direct marker pyridoxal 5'-phosphate (PLP), as well as the functional marker HK-ratio (HKr)[3'-hydroxykynurenine: (kynurenic acid + xanthurenic acid + 3'-hydroxy anthranilic acid + anthranilic acid)]. Using Cox proportional hazards regression, we examined associations of vitamin B6 status with overall survival (OS), disease-free survival (DFS), and risk of recurrence, adjusted for patient age, sex, circulating creatinine concentrations, tumor site, stage, and cohort. RESULTS After a median follow-up of 3.2 y for OS, higher preoperative vitamin B6 status as assessed by PLP and the functional marker HKr was associated with 16-32% higher all-cause and disease-free survival, although there was no significant association with disease recurrence (doubling in PLP concentration: HROS, 0.68; 95% CI: 0.59, 0.79; HRDFS, 0.84; 95% CI: 0.75, 0.94; HRRecurrence, 0.96; 95% CI: 0.84, 1.09; HKr: HROS, 2.04; 95% CI: 1.67, 2.49; HRDFS, 1.56; 95% CI: 1.31, 1.85; HRRecurrence, 1.21; 95% CI: 0.96,1. 52). The association of PLP with improved OS was consistent across colorectal tumor site (right-sided colon: HROS, 0.75; 95% CI: 0.59, 0.96; left-sided colon: HROS, 0.71; 95% CI: 0.55, 0.92; rectosigmoid junction and rectum: HROS, 0.61; 95% CI: 0.47, 0.78). CONCLUSION Higher preoperative vitamin B6 status is associated with improved OS among stage I-III CRC patients.
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Affiliation(s)
- Andreana N Holowatyj
- Huntsman Cancer Institute, Salt Lake City, Utah, USA,Department of Population Health Sciences, University of Utah, Salt Lake City, Utah, USA,Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Jennifer Ose
- Huntsman Cancer Institute, Salt Lake City, Utah, USA,Department of Population Health Sciences, University of Utah, Salt Lake City, Utah, USA
| | - Biljana Gigic
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Tengda Lin
- Huntsman Cancer Institute, Salt Lake City, Utah, USA,Department of Population Health Sciences, University of Utah, Salt Lake City, Utah, USA
| | | | - Anne J M R Geijsen
- Division of Human Nutrition and Health, Wageningen University & Research, Wageningen, The Netherlands
| | - Stefanie Brezina
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Austria
| | - Rama Kiblawi
- Huntsman Cancer Institute, Salt Lake City, Utah, USA,Department of Population Health Sciences, University of Utah, Salt Lake City, Utah, USA,Medical Faculty, Ruprecht-Karls-University Heidelberg, Heidelberg, Germany
| | - Eline H van Roekel
- Department of Epidemiology, GROW School for Oncology and Developmental Biology, Maastricht University, The Netherlands
| | - Andreas Baierl
- Department of Statistics and Operations Research, University of Vienna, Austria
| | - Jürgen Böhm
- Huntsman Cancer Institute, Salt Lake City, Utah, USA,Department of Population Health Sciences, University of Utah, Salt Lake City, Utah, USA
| | - Martijn J L Bours
- Department of Epidemiology, GROW School for Oncology and Developmental Biology, Maastricht University, The Netherlands
| | - Hermann Brenner
- Division of Preventive Oncology, National Center for Tumor Diseases and German Cancer Research Center, Heidelberg, Germany,Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany,German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Stéphanie O Breukink
- Department of Surgery, GROW School for Oncology and Development Biology, Maastricht University, The Netherlands
| | - Jenny Chang-Claude
- Division of Cancer Epidemiology, German Cancer Research Center, Heidelberg Germany
| | - Johannes H W de Wilt
- Department of Surgery, Division of Surgical Oncology and Gastrointestinal Surgery, Radboud University Medical Center, The Netherlands
| | - William M Grady
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | | | - Tanja Gumpenberger
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Austria
| | - Esther Herpel
- Institute of Pathology, University of Heidelberg, Germany
| | - Michael Hoffmeister
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Eric T P Keulen
- Department of Internal Medicine and Gastroenterology, Zuyderland Medical Center, Sittard, The Netherlands
| | - Dieuwertje E Kok
- Division of Human Nutrition and Health, Wageningen University & Research, Wageningen, The Netherlands
| | - Janna L Koole
- Department of Epidemiology, GROW School for Oncology and Developmental Biology, Maastricht University, The Netherlands
| | - Katharina Kosma
- Department of Surgery, Kaiser Franz Josef Hospital, Vienna, Austria
| | | | | | - Christopher I Li
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | | | - Petra Schrotz-King
- Division of Preventive Oncology, National Center for Tumor Diseases and German Cancer Research Center, Heidelberg, Germany
| | - Marie C Singer
- Department of Surgery, Kaiser Franz Josef Hospital, Vienna, Austria
| | | | - Henk K van Halteren
- Department of Internal Medicine, Admiraal de Ruyter Hospital, Goes, The Netherlands
| | - Kathy Vickers
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - F Jeroen Vogelaar
- Department of Surgery, VieCuri Medical Center, Venlo, The Netherlands
| | - Christy A Warby
- Huntsman Cancer Institute, Salt Lake City, Utah, USA,Department of Population Health Sciences, University of Utah, Salt Lake City, Utah, USA
| | - Evertine Wesselink
- Division of Human Nutrition and Health, Wageningen University & Research, Wageningen, The Netherlands
| | | | - Alexis B Ulrich
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Martin Schneider
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Germany
| | - Nina Habermann
- Genome Biology, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Ellen Kampman
- Division of Human Nutrition and Health, Wageningen University & Research, Wageningen, The Netherlands
| | - Matty P Weijenberg
- Department of Epidemiology, GROW School for Oncology and Developmental Biology, Maastricht University, The Netherlands
| | - Andrea Gsur
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Austria
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11
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A Pilot Study on the Prevalence of Micronutrient Imbalances in a Dutch General Population Cohort and the Effects of a Digital Lifestyle Program. Nutrients 2022; 14:nu14071426. [PMID: 35406037 PMCID: PMC9003341 DOI: 10.3390/nu14071426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/27/2022] [Accepted: 03/28/2022] [Indexed: 02/06/2023] Open
Abstract
Maintaining an adequate micronutrient status can be achieved by following a complete, diverse diet. Yet, food trends in Western countries show suboptimal consumption of healthy nutrients. In this study, we explored the prevalence of vitamin and mineral imbalances in a general population cohort of Dutch adults and evaluated the effect of a digital lifestyle program on the nutritional status and nutrition health behaviors of these individuals. A micronutrient panel was measured in 348 participants, alongside a dietary assessment. One hundred users subsequently underwent a remeasurement. We identified at least one nutritional imbalance in 301 individuals (86.5%). A total of 80% improved and normalized B6, 67% improved folate, 70% improved B12, and 86% improved vitamin D. Iron abnormalities were corrected in 75% of the participants. In conclusion, this study found that micronutrient deficiencies of easily obtainable vitamins through diet or supplementation such as B vitamins and vitamin D were more prevalent than expected in a Dutch population. This can partly be explained by insufficient consumption of food groups rich in B vitamins. Our preliminary results in those remeasured after a digitally enabled lifestyle intervention show these imbalances can be corrected with adequate behavioral support complemented with supplementation where needed.
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12
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Mangel N, Fudge JB, Gruissem W, Fitzpatrick TB, Vanderschuren H. Natural Variation in Vitamin B 1 and Vitamin B 6 Contents in Rice Germplasm. FRONTIERS IN PLANT SCIENCE 2022; 13:856880. [PMID: 35444674 PMCID: PMC9014206 DOI: 10.3389/fpls.2022.856880] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/24/2022] [Indexed: 05/03/2023]
Abstract
Insufficient dietary intake of micronutrients contributes to the onset of deficiencies termed hidden hunger-a global health problem affecting approximately 2 billion people. Vitamin B1 (thiamine) and vitamin B6 (pyridoxine) are essential micronutrients because of their roles as enzymatic cofactors in all organisms. Metabolic engineering attempts to biofortify rice endosperm-a poor source of several micronutrients leading to deficiencies when consumed monotonously-have led to only minimal improvements in vitamin B1 and B6 contents. To determine if rice germplasm could be exploited for biofortification of rice endosperm, we screened 59 genetically diverse accessions under greenhouse conditions for variation in vitamin B1 and vitamin B6 contents across three tissue types (leaves, unpolished and polished grain). Accessions from low, intermediate and high vitamin categories that had similar vitamin levels in two greenhouse experiments were chosen for in-depth vitamer profiling and selected biosynthesis gene expression analyses. Vitamin B1 and B6 contents in polished seeds varied almost 4-fold. Genes encoding select vitamin B1 and B6 biosynthesis de novo enzymes (THIC for vitamin B1, PDX1.3a-c and PDX2 for vitamin B6) were differentially expressed in leaves across accessions contrasting in their respective vitamin contents. These expression levels did not correlate with leaf and unpolished seed vitamin contents, except for THIC expression in leaves that was positively correlated with total vitamin B1 contents in polished seeds. This study expands our knowledge of diversity in micronutrient traits in rice germplasm and provides insights into the expression of genes for vitamin B1 and B6 biosynthesis in rice.
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Affiliation(s)
- Nathalie Mangel
- Plant Biotechnology, Department of Biology, ETH Zurich, Zurich, Switzerland
| | - Jared B. Fudge
- Vitamin & Environmental Stress Responses in Plants, Department of Botany and Plant Biology, Université de Genève, Geneva, Switzerland
| | - Wilhelm Gruissem
- Plant Biotechnology, Department of Biology, ETH Zurich, Zurich, Switzerland
- Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
- *Correspondence: Wilhelm Gruissem,
| | - Teresa B. Fitzpatrick
- Vitamin & Environmental Stress Responses in Plants, Department of Botany and Plant Biology, Université de Genève, Geneva, Switzerland
- Teresa B. Fitzpatrick,
| | - Hervé Vanderschuren
- Plant Biotechnology, Department of Biology, ETH Zurich, Zurich, Switzerland
- Plant Genetics Laboratory, TERRA Teaching and Research Center, Gembloux Agro-Bio Tech, Université de Liège, Gembloux, Belgium
- Hervé Vanderschuren,
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13
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Liu J, Zhao F, Wang T, Xu Y, Qiu J, Qian Y. Host Metabolic Disorders Induced by Alterations in Intestinal Flora under Dietary Pesticide Exposure. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:6303-6317. [PMID: 34048223 DOI: 10.1021/acs.jafc.1c00273] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A dietary pesticide residue causes underestimated influences on body health. In this work, experimental mice were exposed to commonly used pesticides that cause insulin resistance, inflammation, and non-alcoholic fatty liver diseases. Alterations in intestinal flora were detected in the exposure groups. The abundance of the flora causing high endotoxin production was intensively increased and led to body inflammation. High Firmicutes/Bacteroidetes and obesity-related flora characteristics were also found. The metabolisms of intestinal flora and host circulation were investigated through metabolomics. The associations of flora with their metabolites and host circulation were also established. Association analysis can determine the influences of pesticide exposure on such a complex system. The affected metabolic pathways in the liver were also determined to clarify the mechanism underlying the effect of pesticide exposure on host physiology. Interventions with fructooligosaccharides and fecal microbiota transplantation alleviated the metabolic disorders, thus directly confirming that the intestinal flora mediates the effects of pesticide exposure on host circulation. This work elucidated the intestinal-flora-mediated effects of dietary pollutant exposure on body health and provided potential measures for regulating flora and host circulation.
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Affiliation(s)
- Jingkun Liu
- Institute of Quality Standards & Testing Technology for Agro-Products, Key Laboratory of Agro-Product Quality and Safety, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing 100081, People's Republic of China
| | - Fangfang Zhao
- Analysis & Testing Center, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, People's Republic of China
| | - Tianrun Wang
- Hebei Normal University, Shijiazhuang, Hebei 050024, People's Republic of China
| | - Yanyang Xu
- Institute of Quality Standards & Testing Technology for Agro-Products, Key Laboratory of Agro-Product Quality and Safety, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing 100081, People's Republic of China
| | - Jing Qiu
- Institute of Quality Standards & Testing Technology for Agro-Products, Key Laboratory of Agro-Product Quality and Safety, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing 100081, People's Republic of China
| | - Yongzhong Qian
- Institute of Quality Standards & Testing Technology for Agro-Products, Key Laboratory of Agro-Product Quality and Safety, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing 100081, People's Republic of China
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14
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Rudzki L, Stone TW, Maes M, Misiak B, Samochowiec J, Szulc A. Gut microbiota-derived vitamins - underrated powers of a multipotent ally in psychiatric health and disease. Prog Neuropsychopharmacol Biol Psychiatry 2021; 107:110240. [PMID: 33428888 DOI: 10.1016/j.pnpbp.2020.110240] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 11/19/2020] [Accepted: 12/30/2020] [Indexed: 02/06/2023]
Abstract
Despite the well-established roles of B-vitamins and their deficiencies in health and disease, there is growing evidence indicating a key role of those nutrients in functions of the central nervous system and in psychopathology. Clinical data indicate the substantial role of B-vitamins in various psychiatric disorders, including major depression, bipolar disorder, schizophrenia, autism, and dementia, including Alzheimer's and Parkinson's diseases. As enzymatic cofactors, B-vitamins are involved in many physiological processes such as the metabolism of glucose, fatty acids and amino acids, metabolism of tryptophan in the kynurenine pathway, homocysteine metabolism, synthesis and metabolism of various neurotransmitters and neurohormones including serotonin, dopamine, adrenaline, acetylcholine, GABA, glutamate, D-serine, glycine, histamine and melatonin. Those vitamins are highly involved in brain energetic metabolism and respiration at the cellular level. They have a broad range of anti-inflammatory, immunomodulatory, antioxidant and neuroprotective properties. Furthermore, some of those vitamins are involved in the regulation of permeability of the intestinal and blood-brain barriers. Despite the fact that a substantial amount of the above vitamins is acquired from various dietary sources, deficiencies are not uncommon, and it is estimated that micronutrient deficiencies affect about two billion people worldwide. The majority of gut-resident microbes and the broad range of bacteria available in fermented food, express genetic machinery enabling the synthesis and metabolism of B-vitamins and, consequently, intestinal microbiota and fermented food rich in probiotic bacteria are essential sources of B-vitamins for humans. All in all, there is growing evidence that intestinal bacteria-derived vitamins play a significant role in physiology and that dysregulation of the "microbiota-vitamins frontier" is related to various disorders. In this review, we will discuss the role of vitamins in mental health and explore the perspectives and potential of how gut microbiota-derived vitamins could contribute to mental health and psychiatric treatment.
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Affiliation(s)
- Leszek Rudzki
- The Charleston Centre, 49 Neilston Road, Paisley PA2 6LY, UK.
| | | | - Michael Maes
- Department of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Department of Psychiatry, Medical University of Plovdiv, Bulgaria; IMPACT Strategic Research Center, Deakin University, Geelong, Australia
| | - Błażej Misiak
- Department of Psychiatry, Wroclaw Medical University, Pasteura 10 Street, 50-367 Wroclaw, Poland
| | - Jerzy Samochowiec
- Department of Psychiatry, Pomeranian Medical University, Broniewskiego 26 Street, 71-460 Szczecin, Poland
| | - Agata Szulc
- Department of Psychiatry, Medical University of Warsaw, Poland
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15
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Liu CY, Huang TT, Chen JL, Chu PY, Lee CH, Lee HC, Lee YH, Chang YY, Yang SH, Jiang JK, Chen WS, Chao Y, Teng HW. Significance of Kynurenine 3-Monooxygenase Expression in Colorectal Cancer. Front Oncol 2021; 11:620361. [PMID: 33937026 PMCID: PMC8085544 DOI: 10.3389/fonc.2021.620361] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 02/18/2021] [Indexed: 12/22/2022] Open
Abstract
Colorectal cancer (CRC) is a leading cause of cancer-related deaths. Because of the lack of reliable prognostic and predictive biomarkers for CRC, most patients are often diagnosed at a late stage. The tryptophan–kynurenine pathway plays a crucial role in promoting cancer progression. Kynurenine is considered an oncometabolite in colon cancer, and its downstream metabolites are also associated with CRC. Kynurenine 3-monooxygenase (KMO), a pivotal enzyme that catalyzes kynurenine metabolism, is essential for several cellular processes. In the current study, we explored the role of KMO in CRC. Immunohistochemical results showed that KMO was upregulated in CRC tissues relative to paired healthy tissue and polyps. Moreover, CRC patients with higher KMO expression were associated with higher metastasis and poorer survival rates. Knockdown of KMO decreased the expression of cancer stem cell markers, as well as the sphere-forming, migration, and invasion abilities of CRC cells. Additionally, blockade of the enzymatic activity of KMO using an inhibitor suppressed sphere formation and cell motility in CRC cells. These findings suggest the clinical relevance of KMO in CRC tumorigenesis and aggressiveness.
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Affiliation(s)
- Chun-Yu Liu
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Transfusion Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Division of Medical Oncology, Department of Oncology, Center for Immuno-Oncology, Taipei Veterans General Hospital, Taipei, Taiwan.,School of Medicine, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Tzu-Ting Huang
- Division of Medical Oncology, Department of Oncology, Center for Immuno-Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ji-Lin Chen
- Division of Medical Oncology, Department of Oncology, Center for Immuno-Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Pei-Yi Chu
- Department of Pathology, Show Chwan Memorial Hospital, Changhua City, Taiwan.,School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Chia-Han Lee
- Division of Medical Oncology, Department of Oncology, Center for Immuno-Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Hsin-Chen Lee
- School of Medicine, Institute of Pharmacology, National Yang-Ming Chiao Tung University, New Taipei City, Taiwan
| | - Yu-Hsuan Lee
- Division of Medical Oncology, Department of Oncology, Center for Immuno-Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yuan-Ya Chang
- Division of Medical Oncology, Department of Oncology, Center for Immuno-Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Shung-Haur Yang
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,School of Medicine, National Yang Ming Chiao Tung University, Hsinchu, Taiwan.,Division of Colon and Rectum Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Surgery, National Yang Ming Chiao Tung University Hospital, Yilan, Taiwan
| | - Jeng-Kai Jiang
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,School of Medicine, National Yang Ming Chiao Tung University, Hsinchu, Taiwan.,Division of Colon and Rectum Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Wei-Shone Chen
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,School of Medicine, National Yang Ming Chiao Tung University, Hsinchu, Taiwan.,Division of Colon and Rectum Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yee Chao
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Medical Oncology, Department of Oncology, Center for Immuno-Oncology, Taipei Veterans General Hospital, Taipei, Taiwan.,School of Medicine, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Hao-Wei Teng
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Medical Oncology, Department of Oncology, Center for Immuno-Oncology, Taipei Veterans General Hospital, Taipei, Taiwan.,School of Medicine, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
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16
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Abstract
Vitamin B6, a cofactor in many biochemical reactions in the cells of living organisms, is an essential coenzyme for various catabolic and anabolic processes. Although vitamin B6 deficiency in young healthy women with a balanced diet is thought to be unusual, it can be seen with certain medications, health conditions, and dietary deficits, as well as aging. Vitamin B6 deficiency is associated with a variety of ill health effects, and correction of deficiency is considered beneficial. Women particularly are affected by unique health issues that are part of the array of disorders potentially alleviated through vitamin B6 supplementation.
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17
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Benedicto A, Sanz E, Márquez J. Ocoxin as a complement to first line treatments in cancer. Int J Med Sci 2021; 18:835-845. [PMID: 33437220 PMCID: PMC7797552 DOI: 10.7150/ijms.50122] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 11/25/2020] [Indexed: 12/18/2022] Open
Abstract
Chemotherapy and radiotherapy are the most frequent treatment for patients suffering from malignant progression of cancer. Even though new treatments are now being implemented, administration of these chemotherapeutic agents remains as the first line option in many tumor types. However, the secondary effects of these compounds represent one of the main reasons cancer patients lose life quality during disease progression. Recent data suggests that Ocoxin, a plant extract and natural compound based nutritional complement rich in antioxidants and anti-inflammatory mediators exerts a positive effect in patients receiving chemotherapy and radiotherapy. This mixture attenuates the chemotherapy and radiotherapy-related side effects such as radiation-induced skin burns and mucositis, chemotherapy-related diarrhea, hepatic toxicity and blood-infection. Moreover, it has been proven to be effective as anticancer agent in different tumor models both in vitro and in vivo, potentiating the cytotoxic effect of several chemotherapy compounds such as Lapatinib, Gemcitabine, Paclitaxel, Sorafenib and Irinotecan. The aim of this review is to put some light on the potential of this nutritional mixture as an anticancer agent and complement for the standard chemotherapy routine.
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Affiliation(s)
- Aitor Benedicto
- Department of Cellular Biology and Histology, School of Medicine and Nursing, University of the Basque Country, 48940, Leioa, Bizkaia, Spain
| | | | - Joana Márquez
- Department of Cellular Biology and Histology, School of Medicine and Nursing, University of the Basque Country, 48940, Leioa, Bizkaia, Spain
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18
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Calderon-Ospina CA, Nava-Mesa MO, Paez-Hurtado AM. Update on Safety Profiles of Vitamins B1, B6, and B12: A Narrative Review. Ther Clin Risk Manag 2020; 16:1275-1288. [PMID: 33376337 PMCID: PMC7764703 DOI: 10.2147/tcrm.s274122] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 09/04/2020] [Indexed: 12/11/2022] Open
Abstract
The neurotropic B vitamins B1 (thiamine), B6 (pyridoxine), and B12 (cobalamin) are essential for proper functioning of the nervous system. Deficiencies may induce neurological disorders like peripheral neuropathy (PN) and mainly occur in vulnerable populations (eg, elderly, diabetics, alcoholics). As epidemiologic cohort studies raised safety concerns about vitamin B6/B12 intake being potentially associated with increased risks of hip fracture (HF) and lung cancer (LC), we explored these aspects and performed comprehensive literature searches. However, we suggest not to neglect actual high-risk factors (eg, smoking in LC, higher age in HF) by focusing on individual nutrients, but to examine the complex interaction of numerous factors involved in disease development. Because it warrants continued consideration, we also provide an update on neurotoxicity associated with vitamin B6. We consider that neurological side effects due to vitamin B6 intake are rare and only occur with high daily doses and/or longer treatment duration. The benefit-risk ratio of high-dose treatment with neurotropic B vitamins in indications like PN is therefore considered advantageous, particularly if dosing recommendations are followed and serum levels monitored.
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Affiliation(s)
- Carlos-Alberto Calderon-Ospina
- Center for Research in Genetics and Genomics (CIGGUR), GENIUROS Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Mauricio Orlando Nava-Mesa
- Neuroscience Research Group (NEUROS), School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Ana María Paez-Hurtado
- Neuroscience Research Group (NEUROS), School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
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19
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Vitamin B6, Inflammation, and Cardiovascular Outcome in a Population-Based Cohort: The Prevention of Renal and Vascular End-Stage Disease (PREVEND) Study. Nutrients 2020; 12:nu12092711. [PMID: 32899820 PMCID: PMC7551483 DOI: 10.3390/nu12092711] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 08/31/2020] [Accepted: 09/03/2020] [Indexed: 12/31/2022] Open
Abstract
Background: a large number of studies have linked vitamin B6 to inflammation and cardiovascular disease in the general population. However, it remains uncertain whether vitamin B6 is associated with cardiovascular outcome independent of inflammation. Methods: we measured plasma pyridoxal 5’-phosphate (PLP), as an indicator of vitamin B6 status, at baseline in a population-based prospective cohort of 6249 participants of the Prevention of Renal and Vascular End-stage Disease (PREVEND) study who were free of cardiovascular disease. As indicators of low-grade systemic inflammation, we measured high-sensitivity C-reactive protein and GlycA; Results: median plasma PLP was 37.2 (interquartile range, 25.1–57.0) nmol/L. During median follow-up for 8.3 (interquartile range, 7.8–8.9) years, 409 non-fatal and fatal cardiovascular events (composite outcome) occurred. In the overall cohort, log transformed plasma PLP was associated with the composite outcome, independent of adjustment for age, sex, smoking, alcohol consumption, body mass index (BMI), estimated glomerular filtration rate (eGFR), total cholesterol:high-density lipoprotein (HDL)-cholesterol ratio, and blood pressure (adjusted hazard ratio per increment of log plasma PLP, 0.66; 95% confidence interval (CI), 0.47–0.93). However, adjustment for high-sensitivity C-reactive protein and GlycA increased the hazard ratio by 9% and 12% respectively, to non-significant hazard ratios of 0.72 (95% confidence interval, 0.51–1.01) and 0.74 (95% confidence interval, 0.53–1.05). The association of plasma PLP with cardiovascular risk was modified by gender (adjusted Pinteraction = 0.04). When stratified according to gender, in women the prospective association with cardiovascular outcome was independent of age, smoking, alcohol consumption, high-sensitivity C-reactive protein, and GlycA (adjusted hazard ratio, 0.50, 95% confidence interval, 0.27–0.94), while it was not in men (adjusted hazard, 0.99, 95% confidence interval, 0.65–1.51). Conclusions: in this population-based cohort, plasma PLP was associated with cardiovascular outcome, but this association was confounded by traditional risk factors and parameters of inflammation. Notably, the association of low plasma PLP with high risk of adverse cardiovascular outcome was modified by gender, with a stronger and independent association in women.
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20
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Vitamin B6 and Diabetes: Relationship and Molecular Mechanisms. Int J Mol Sci 2020; 21:ijms21103669. [PMID: 32456137 PMCID: PMC7279184 DOI: 10.3390/ijms21103669] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 05/21/2020] [Accepted: 05/21/2020] [Indexed: 12/14/2022] Open
Abstract
Vitamin B6 is a cofactor for approximately 150 reactions that regulate the metabolism of glucose, lipids, amino acids, DNA, and neurotransmitters. In addition, it plays the role of antioxidant by counteracting the formation of reactive oxygen species (ROS) and advanced glycation end-products (AGEs). Epidemiological and experimental studies indicated an evident inverse association between vitamin B6 levels and diabetes, as well as a clear protective effect of vitamin B6 on diabetic complications. Interestingly, by exploring the mechanisms that govern the relationship between this vitamin and diabetes, vitamin B6 can be considered both a cause and effect of diabetes. This review aims to report the main evidence concerning the role of vitamin B6 in diabetes and to examine the underlying molecular and cellular mechanisms. In addition, the relationship between vitamin B6, genome integrity, and diabetes is examined. The protective role of this vitamin against diabetes and cancer is discussed.
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21
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Contestabile R, di Salvo ML, Bunik V, Tramonti A, Vernì F. The multifaceted role of vitamin B 6 in cancer: Drosophila as a model system to investigate DNA damage. Open Biol 2020; 10:200034. [PMID: 32208818 PMCID: PMC7125957 DOI: 10.1098/rsob.200034] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A perturbed uptake of micronutrients, such as minerals and vitamins, impacts on different human diseases, including cancer and neurological disorders. Several data converge towards a crucial role played by many micronutrients in genome integrity maintenance and in the establishment of a correct DNA methylation pattern. Failure in the proper accomplishment of these processes accelerates senescence and increases the risk of developing cancer, by promoting the formation of chromosome aberrations and deregulating the expression of oncogenes. Here, the main recent evidence regarding the impact of some B vitamins on DNA damage and cancer is summarized, providing an integrated and updated analysis, mainly centred on vitamin B6. In many cases, it is difficult to finely predict the optimal vitamin rate that is able to protect against DNA damage, as this can be influenced by a given individual's genotype. For this purpose, a precious resort is represented by model organisms which allow limitations imposed by more complex systems to be overcome. In this review, we show that Drosophila can be a useful model to deeply understand mechanisms underlying the relationship between vitamin B6 and genome integrity.
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Affiliation(s)
- Roberto Contestabile
- Istituto Pasteur Italia-Fondazione Cenci Bolognetti and Dipartimento di Scienze Biochimiche 'A. Rossi Fanelli', Sapienza Università di Roma, P.le A. Moro, 5, 00185, Roma, Italy
| | - Martino Luigi di Salvo
- Istituto Pasteur Italia-Fondazione Cenci Bolognetti and Dipartimento di Scienze Biochimiche 'A. Rossi Fanelli', Sapienza Università di Roma, P.le A. Moro, 5, 00185, Roma, Italy
| | - Victoria Bunik
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow 119991, Russia.,Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow 119991, Russia.,Sechenov Medical University, Sechenov University, 119048 Moscow, Russia
| | - Angela Tramonti
- Istituto Pasteur Italia-Fondazione Cenci Bolognetti and Dipartimento di Scienze Biochimiche 'A. Rossi Fanelli', Sapienza Università di Roma, P.le A. Moro, 5, 00185, Roma, Italy.,Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche, Pl.e A. Moro, 5, 00185 Roma, Italy
| | - Fiammetta Vernì
- Dipartimento di Biologia e Biotecnologie 'Charles Darwin', Sapienza Università di Roma, Pl.e A. Moro, 5, 00185 Roma, Italy
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One-carbon metabolites, B vitamins and associations with systemic inflammation and angiogenesis biomarkers among colorectal cancer patients: results from the ColoCare Study. Br J Nutr 2020; 123:1187-1200. [PMID: 32019627 DOI: 10.1017/s0007114520000422] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
B vitamins involved in one-carbon metabolism have been implicated in the development of inflammation- and angiogenesis-related chronic diseases, such as colorectal cancer (CRC). Yet, the role of one-carbon metabolism in inflammation and angiogenesis among CRC patients remains unclear. The objective of this study was to investigate associations of components of one-carbon metabolism with inflammation and angiogenesis biomarkers among newly diagnosed CRC patients (n 238) in the prospective ColoCare Study, Heidelberg. We cross-sectionally analysed associations between twelve B vitamins and one-carbon metabolites and ten inflammation and angiogenesis biomarkers from pre-surgery serum samples using multivariable linear regression models. We further explored associations among novel biomarkers in these pathways with Spearman partial correlation analyses. We hypothesised that pyridoxal-5'-phosphate (PLP) is inversely associated with inflammatory biomarkers. We observed that PLP was inversely associated with C-reactive protein (CRP) (r -0·33, Plinear < 0·0001), serum amyloid A (SAA) (r -0·23, Plinear = 0·003), IL-6 (r -0·39, Plinear < 0·0001), IL-8 (r -0·20, Plinear = 0·02) and TNFα (r -0·12, Plinear = 0·045). Similar findings were observed for 5-methyl-tetrahydrofolate and CRP (r -0·14), SAA (r -0·14) and TNFα (r -0·15) among CRC patients. Folate catabolite acetyl-para-aminobenzoylglutamic acid (pABG) was positively correlated with IL-6 (r 0·27, Plinear < 0·0001), and pABG was positively correlated with IL-8 (r 0·21, Plinear < 0·0001), indicating higher folate utilisation during inflammation. Our data support the hypothesis of inverse associations between PLP and inflammatory biomarkers among CRC patients. A better understanding of the role and inter-relation of PLP and other one-carbon metabolites with inflammatory processes among colorectal carcinogenesis and prognosis could identify targets for future dietary guidance for CRC patients.
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23
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Ulvik A, Midttun Ø, McCann A, Meyer K, Tell G, Nygård O, Ueland PM. Tryptophan catabolites as metabolic markers of vitamin B-6 status evaluated in cohorts of healthy adults and cardiovascular patients. Am J Clin Nutr 2020; 111:178-186. [PMID: 31557280 DOI: 10.1093/ajcn/nqz228] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 08/20/2019] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Vitamin B-6 status is routinely measured as pyridoxal 5'-phosphate (PLP) in plasma. Low concentrations of PLP are associated with rheumatic, cardiovascular, and neoplastic diseases. We have previously shown that vitamin B-6 status affects the kynurenine (Kyn) pathway of tryptophan (Trp) catabolism. OBJECTIVE This study aimed to comprehensively evaluate the use of Kyns as potential markers of functional vitamin B-6 status across 2 large cohorts. METHODS We measured circulating concentrations of the first 6 metabolites in the Trp catabolic pathway by LC-MS-MS in the community-based Hordaland Health Study (HUSK; n = 7017) and cardiovascular patient-based Western Norway Coronary Angiography Cohort (WECAC; n = 4161). Cross-sectional and longitudinal associations of plasma PLP with Kyns were estimated using linear and nonlinear regression-based methods. RESULTS 3'-Hydroxykynurenine (HK), a substrate, and all 4 products formed directly by the PLP-dependent enzymes kynurenine transaminase and kynureninase contributed to the explanation of circulating PLP in multivariable-adjusted regression models. The construct HK:(kynurenic acid + xanthurenic acid + 3'-hydroxyanthranilic acid + anthranilic acid), termed HK ratio (HKr), was related to plasma PLP with standardized regression coefficients (95% CIs) of -0.47 (-0.49, -0.45) and -0.46 (-0.49, -0.43) in HUSK and WECAC, respectively. Across strata of cohort and sex, HKr was 1.3- to 2.7-fold more sensitive, but also 1.7- to 2.9-fold more specific to changes in PLP than a previously proposed marker, HK:xanthurenic acid. Notably, the association was strongest at PLP concentrations < ∼20 nmol/L, a recognized threshold for vitamin B-6 deficiency. Finally, PLP and HKr demonstrated highly sex-specific and corroborating associations with age. CONCLUSIONS The results demonstrate that by combining 5 metabolites in the Kyn pathway into a simple index, HKr, a sensitive and specific indicator of intracellular vitamin B-6 status is obtained. The data also underscore the merit of evaluating alterations in Kyn metabolism when investigating vitamin B-6 and health.
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Affiliation(s)
| | | | | | | | - Grethe Tell
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
| | - Ottar Nygård
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
| | - Per M Ueland
- Department of Clinical Science, University of Bergen, Bergen, Norway
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24
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Mascolo E, Barile A, Mecarelli LS, Amoroso N, Merigliano C, Massimi A, Saggio I, Hansen T, Tramonti A, Di Salvo ML, Barbetti F, Contestabile R, Vernì F. The expression of four pyridoxal kinase (PDXK) human variants in Drosophila impacts on genome integrity. Sci Rep 2019; 9:14188. [PMID: 31578392 PMCID: PMC6775053 DOI: 10.1038/s41598-019-50673-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/15/2019] [Indexed: 01/11/2023] Open
Abstract
In eukaryotes, pyridoxal kinase (PDXK) acts in vitamin B6salvage pathway to produce pyridoxal 5′-phosphate (PLP), the active form of the vitamin, which is implicated in numerous crucial metabolic reactions. In Drosophila, mutations in the dPdxk gene cause chromosome aberrations (CABs) and increase glucose content in larval hemolymph. Both phenotypes are rescued by the expression of the wild type human PDXK counterpart. Here we expressed, in dPdxk1 mutant flies, four PDXK human variants: three (D87H, V128I and H246Q) listed in databases, and one (A243G) found in a genetic screening in patients with diabetes. Differently from human wild type PDXK, none of the variants was able to completely rescue CABs and glucose content elicited by dPdxk1 mutation. Biochemical analysis of D87H, V128I, H246Q and A243G proteins revealed reduced catalytic activity and/or reduced affinity for PLP precursors which justify this behavior. Although these variants are rare in population and carried in heterozygous condition, our findings suggest that in certain metabolic contexts and diseases in which PLP levels are reduced, the presence of these PDXK variants could threaten genome integrity and increase cancer risk.
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Affiliation(s)
- Elisa Mascolo
- Dipartimento di Biologia e Biotecnologie "C. Darwin" Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Roma, Italy
| | - Anna Barile
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza Università di Roma, Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, 00185, Roma, Italy
| | - Lorenzo Stufera Mecarelli
- Dipartimento di Biologia e Biotecnologie "C. Darwin" Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Roma, Italy
| | - Noemi Amoroso
- Dipartimento di Biologia e Biotecnologie "C. Darwin" Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Roma, Italy
| | - Chiara Merigliano
- University of Southern California, Molecular and Computational Biology Department, 1050 Childs Way, Los Angeles, California, 90089, USA
| | - Arianna Massimi
- Dipartimento di Medicina Sperimentale, Università di Roma Tor Vergata, Via Montpellier 1, 0133, Roma, Italy
| | - Isabella Saggio
- Dipartimento di Biologia e Biotecnologie "C. Darwin" Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Roma, Italy.,Nanyang Technological University, School of Biological Science, 60 Nanyang Dr, Jurong West, 637551, Singapore
| | - Torben Hansen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen, Denmark
| | - Angela Tramonti
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza Università di Roma, Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, 00185, Roma, Italy.,Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche, Piazzale Aldo Moro 5, 00185, Roma, Italy
| | - Martino Luigi Di Salvo
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza Università di Roma, Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, 00185, Roma, Italy
| | - Fabrizio Barbetti
- Dipartimento di Medicina Sperimentale, Università di Roma Tor Vergata, Via Montpellier 1, 0133, Roma, Italy
| | - Roberto Contestabile
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza Università di Roma, Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, 00185, Roma, Italy.
| | - Fiammetta Vernì
- Dipartimento di Biologia e Biotecnologie "C. Darwin" Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Roma, Italy.
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25
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Aguida B, Bouceba T, Créchet JB, Hounguè H, Capo-Chichi C, Nakayama JI, Baouz S, Pelczar H, Woisard A, Jourdan N, Hountondji C. In Vitro Analysis of Protein:Protein Interactions in the Human Cancer-Pertinent rp.eL42-p53-Mdm2 Pathway. Open Biochem J 2019. [DOI: 10.2174/1874091x01913010064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Introduction:
We have recently demonstrated that the eukaryote-specific large subunit ribosomal protein
(rp) eL42 assists catalysis of peptide bond formation at the peptidyl transferase center of 80S
ribosomes in eukaryotic cells. Recently, several ribosomal proteins were shown to have extraribosomal
functions independent of protein biosynthesis. Such functions include regulation of
apoptosis, cell cycle arrest, cell proliferation, neoplastic transformation, cell migration and
invasion, and tumorigenesis through both Mdm2-p53-dependent and p53-independent
mechanisms. Our objective is to demonstrate that overexpression of eL42 in tumor may
incapacitate cell anti-tumor mechanism through interaction with the tumor suppressor protein
p53 and its partner Mdm2.
Methods:
Co-immunoprecipitation technique and the binding assays on Biacore were used to
probe interactions between recombinant eL42, p53 and Mdm2 proteins in a so-called rp-p53-Mdm2 axis.
Results:
We demonstrate that the ribosomal protein eL42, the tumor suppressor protein p53 and the ubiquitin E3 ligase Mdm2 interact with each other in a ternary rp.eL42:p53:Mdm2 complex. Precisely, the interaction between eL42 and p53 is characterized by a strong binding affinity (KD value in the nanomolar range) that is likely to trigger the sequestration of p53 and the inhibition of its tumor suppressor activity. Furthermore, the p53:Mdm2 and eL42:Mdm2 complexes exhibit comparable binding affinities in the micromolar range compatible with Mdm2 being the enzyme which ubiquitinates both the p53 and eL42 substrates. Interestingly, pyridoxal 5'-phosphate (PLP), one of the active forms of vitamin B6, binds to eL42 and significantly inhibits the interaction between eL42 and p53, in accordance with the observation that vitamin B6 is associated with reduced risk of cancer.
Conclusion:
Our study emphasized one more major mechanism of p53 downregulation involving its sequestration by eL42 upon the overexpression of this ribosomal protein. The mechanism described in the present report complemented the well-known p53 downregulation triggered by proteasomal degradation mediated through its ubiquitination by Mdm2.
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26
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Defining Metabolic Rewiring in Lung Squamous Cell Carcinoma. Metabolites 2019; 9:metabo9030047. [PMID: 30866469 PMCID: PMC6468359 DOI: 10.3390/metabo9030047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 02/26/2019] [Accepted: 03/02/2019] [Indexed: 01/19/2023] Open
Abstract
Metabolomics based on untargeted flow infusion electrospray ionization high-resolution mass spectrometry (FIE-HRMS) can provide a snap-shot of metabolism in living cells. Lung Squamous Cell Carcinoma (SCC) is one of the predominant subtypes of Non-Small Cell Lung Cancers (NSCLCs), which usually shows a poor prognosis. We analysed lung SCC samples and matched histologically normal lung tissues from eight patients. Metabolites were profiled by FIE-HRMS and assessed using t-test and principal component analysis (PCA). Differentially accumulating metabolites were mapped to pathways using the mummichog algorithm in R, and biologically meaningful patterns were indicated by Metabolite Set Enrichment Analysis (MSEA). We identified metabolic rewiring networks, including the suppression of the oxidative pentose pathway and found that the normal tricarboxylic acid (TCA) cycle were decoupled from increases in glycolysis and glutamine reductive carboxylation. Well-established associated effects on nucleotide, amino acid and thiol metabolism were also seen. Novel aspects in SCC tissue were increased in Vitamin B complex cofactors, serotonin and a reduction of γ-aminobutyric acid (GABA). Our results show the value of FIE-HRMS as a high throughput screening method that could be exploited in clinical contexts.
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27
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Yang J, Li H, Deng H, Wang Z. Association of One-Carbon Metabolism-Related Vitamins (Folate, B6, B12), Homocysteine and Methionine With the Risk of Lung Cancer: Systematic Review and Meta-Analysis. Front Oncol 2018; 8:493. [PMID: 30430082 PMCID: PMC6220054 DOI: 10.3389/fonc.2018.00493] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 10/11/2018] [Indexed: 12/22/2022] Open
Abstract
Background: Studies on serum one-carbon metabolism factors (folate, B6, B12, homocysteine, and methionine) with lung cancer (LC) risk have produced inconsistent results. We aimed to systematically evaluate the association between them. Methods: This study was reported in accordance with the PRISMA Statement and was registered with PROSPERO (no. CRD42018086654). Relevant studies were searched in PubMed, Embase, MEDLINE, and CNKI up to February 2018. Random-effects models were used to estimate the pooled standardized mean differences (SMD) or odds ratios (OR), as well as their 95% confidence interval (CI). Sensitivity and subgroup analysis were performed to identify the source of heterogeneity. Publication bias was also assessed. Results: A total of 14 articles (8,097 patients) were included. The concentration of serum folate and vitamin B6 of LC patients were lower than the controls [SMD -0.53, 95% CI (-0.70, -0.35), p = 0.001 and SMD -0.28, 95%CI (-0.53, -0.02), p = 0.001, respectively]. While the concentration of homocysteine of the cases was higher than the controls [SMD 0.41, 95% CI (0.24, 0.59), p = 0.001]. However, there were no significant differences between LC patients and the controls in terms of vitamin B12 and methionine [SMD -0.09, 95% CI (-0.27, 0.09), p = 0.202 and SMD -0.13, 95% CI (-0.36, 0.10), p = 0.001]. Subgroup analysis showed that these results were more significant in Europe, Asia, former and current smokers, and the male population (p-value < 0.05). Conclusions: Serum folate and vitamin B6 might be protective factors against lung carcinogenesis and homocysteine could contribute to LC risk.
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Affiliation(s)
- Jia Yang
- Oncology Department of LongHua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hongjia Li
- Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Haibin Deng
- Oncology Department of LongHua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zhongqi Wang
- Oncology Department of LongHua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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28
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Merigliano C, Mascolo E, Burla R, Saggio I, Vernì F. The Relationship Between Vitamin B6, Diabetes and Cancer. Front Genet 2018; 9:388. [PMID: 30271425 PMCID: PMC6146109 DOI: 10.3389/fgene.2018.00388] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 08/29/2018] [Indexed: 11/15/2022] Open
Abstract
Pyridoxal 5′-phosphate (PLP), the active form of vitamin B6, works as cofactor in numerous enzymatic reactions and it behaves as antioxidant molecule. PLP deficiency has been associated to many human pathologies including cancer and diabetes and the mechanism behind this connection is now becoming clearer. Inadequate intake of this vitamin increases the risk of many cancers; furthermore, PLP deprivation impairs insulin secretion in rats, whereas PLP supplementation prevents diabetic complications and improves gestational diabetes. Growing evidence shows that diabetes and cancer are correlated not only because they share same risk factors but also because diabetic patients have a higher risk of developing tumors, although the underlying mechanisms remain elusive. In this review, we will explore data obtained in Drosophila revealing the existence of a connection between vitamin B6, DNA damage and diabetes, as flies in the past decade turned out to be a promising model also for metabolic diseases including diabetes. We will focus on recent studies that revealed a specific role for PLP in maintaining chromosome integrity and glucose homeostasis, and we will show that these aspects are correlated. In addition, we will discuss recent data identifying PLP as a putative linking factor between diabetes and cancer.
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Affiliation(s)
- Chiara Merigliano
- Dipartimento di Biologia e Biotecnologie "C. Darwin," Sapienza Università di Roma, Rome, Italy
| | - Elisa Mascolo
- Dipartimento di Biologia e Biotecnologie "C. Darwin," Sapienza Università di Roma, Rome, Italy
| | - Romina Burla
- Dipartimento di Biologia e Biotecnologie "C. Darwin," Sapienza Università di Roma, Rome, Italy
| | - Isabella Saggio
- Dipartimento di Biologia e Biotecnologie "C. Darwin," Sapienza Università di Roma, Rome, Italy.,Institute of Structural Biology, School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Fiammetta Vernì
- Dipartimento di Biologia e Biotecnologie "C. Darwin," Sapienza Università di Roma, Rome, Italy
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29
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Protective role of vitamin B6 (PLP) against DNA damage in Drosophila models of type 2 diabetes. Sci Rep 2018; 8:11432. [PMID: 30061626 PMCID: PMC6065437 DOI: 10.1038/s41598-018-29801-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 07/19/2018] [Indexed: 12/24/2022] Open
Abstract
Growing evidence shows that improper intake of vitamin B6 increases cancer risk and several studies indicate that diabetic patients have a higher risk of developing tumors. We previously demonstrated that in Drosophila the deficiency of Pyridoxal 5′ phosphate (PLP), the active form of vitamin B6, causes chromosome aberrations (CABs), one of cancer prerequisites, and increases hemolymph glucose content. Starting from these data we asked if it was possible to provide a link between the aforementioned studies. Thus, we tested the effect of low PLP levels on DNA integrity in diabetic cells. To this aim we generated two Drosophila models of type 2 diabetes, the first by impairing insulin signaling and the second by rearing flies in high sugar diet. We showed that glucose treatment induced CABs in diabetic individuals but not in controls. More interestingly, PLP deficiency caused high frequencies of CABs in both diabetic models demonstrating that hyperglycemia, combined to reduced PLP level, impairs DNA integrity. PLP-depleted diabetic cells accumulated Advanced Glycation End products (AGEs) that largely contribute to CABs as α-lipoic acid, an AGE inhibitor, rescued not only AGEs but also CABs. These data, extrapolated to humans, indicate that low PLP levels, impacting on DNA integrity, may be considered one of the possible links between diabetes and cancer.
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30
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Bird RP. The Emerging Role of Vitamin B6 in Inflammation and Carcinogenesis. ADVANCES IN FOOD AND NUTRITION RESEARCH 2018; 83:151-194. [PMID: 29477221 DOI: 10.1016/bs.afnr.2017.11.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Vitamin B6 serves as a coenzyme catalyzing more than 150 enzymes regulating metabolism and synthesis of proteins, carbohydrates, lipids, heme, and important bioactive metabolites. For several years vitamin B6 and its vitamers (B6) were recognized as antioxidant and antiinflammatory and in modulating immunity and gene expression. During the last 10 years, there were growing reports implicating B6 in inflammation and inflammation-related chronic illnesses including cancer. It is unclear if the deficiency of B6 or additional intake of B6, above the current requirement, should be the focus. Whether the current recommended daily intake for B6 is adequate should be revisited, since B6 is important to human health beyond its role as a coenzyme and its status is affected by many factors including but not limited to age, obesity, and inflammation associated with chronic illnesses. A link between inflammation B6 status and carcinogenesis is not yet completely understood. B6-mediated synthesis of H2S, a gasotransmitter, and taurine in health and disease, especially in maintaining mitochondrial integrity and biogenesis and inflammation, remains an important area to be explored. Recent developments in the molecular role of B6 and its direct interaction with inflammasomes, and nuclear receptor corepressor and coactivator, receptor-interacting protein 140, provide a strong impetus to further explore the multifaceted role of B6 in carcinogenesis and human health.
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Affiliation(s)
- Ranjana P Bird
- School of Health Sciences, University of Northern British Columbia, Prince George, BC, Canada.
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31
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Zuo H, Tell GS, Ueland PM, Nygård O, Vollset SE, Midttun Ø, Meyer K, Ulvik A. The PAr index, an indicator reflecting altered vitamin B-6 homeostasis, is associated with long-term risk of stroke in the general population: the Hordaland Health Study (HUSK). Am J Clin Nutr 2018; 107:105-112. [PMID: 29381795 PMCID: PMC5972613 DOI: 10.1093/ajcn/nqx012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 10/19/2017] [Indexed: 12/15/2022] Open
Abstract
Background Vitamin B-6 homeostasis is altered during inflammation and immune activation. It is unknown whether altered vitamin B-6 homeostasis is associated with the risk of stroke. Objective We investigated the relation between the ratio plasma 4-pyridoxic acid: (pyridoxal + pyridoxal-5'-phosphate) (PAr) as an indicator of altered vitamin B-6 homeostasis and the risk of stroke in the general population. Design We conducted a prospective analysis of the community-based Hordaland Health Study (HUSK) in 6891 adults (born during 1925-1927 and 1950-1951) without known stroke at baseline (1998-1999). Participants were followed via linkage to the CVDNOR (Cardiovascular Disease in Norway) project and the Cause of Death Registry. HRs and 95% CIs were calculated using Cox proportional hazards analyses. Results A total of 390 participants (193 men and 197 women) developed stroke over a median follow-up period of 11 y. Study participants with elevated PAr experienced a higher risk of incident stroke in an essentially linear dose-response fashion. The HR (95% CI) for the highest compared with the lowest quartile of PAr was 1.97 (1.42, 2.73; P-trend <0.001) for total stroke and 2.09 (1.42, 3.09; P-trend <0.001) for ischemic stroke after adjustment for age, sex, body mass index (BMI), smoking, education, physical activity, estimated glomerular filtration rate, hypertension, diabetes, total cholesterol, and statin use. PAr had greater predictive strength than did C-reactive protein, current smoking, diabetes, hypertension, estimated glomerular filtration rate, and physical activity. The associations were similar in subgroups stratified by age group, sex, BMI, current smoking, hypertension, diabetes, and statin use at baseline. Conclusions Higher plasma PAr was independently associated with increased risk of incident stroke in all participants and across all subgroups stratified by conventional risk predictors. Our novel findings point to and expand the range of inflammation and immune activation processes that may be relevant for the pathogenesis and prevention of stroke. This trial was registered at clinicaltrials.gov as NCT03013725.
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Affiliation(s)
- Hui Zuo
- Departments of Global Public Health and Primary Care and Clinical Science, University of Bergen, Bergen, Norway,Address correspondence to HZ (e-mail: )
| | - Grethe S Tell
- Departments of Global Public Health and Primary Care and Clinical Science, University of Bergen, Bergen, Norway,Domain for Health Data and Digitalization, Norwegian Institute of Public Health, Bergen, Norway
| | - Per M Ueland
- Departments of Clinical Science, University of Bergen, Bergen, Norway,Laboratory of Clinical Biochemistry
| | - Ottar Nygård
- Departments of Clinical Science, University of Bergen, Bergen, Norway,Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
| | - Stein E Vollset
- Departments of Global Public Health and Primary Care and Clinical Science, University of Bergen, Bergen, Norway,The Norwegian Institute of Public Health, Bergen, Norway
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32
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Minović I, van der Veen A, van Faassen M, Riphagen IJ, van den Berg E, van der Ley C, Gomes-Neto AW, Geleijnse JM, Eggersdorfer M, Navis GJ, Kema IP, Bakker SJ. Functional vitamin B-6 status and long-term mortality in renal transplant recipients. Am J Clin Nutr 2017; 106:1366-1374. [PMID: 28978540 DOI: 10.3945/ajcn.117.164012] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 09/11/2017] [Indexed: 11/14/2022] Open
Abstract
Background: Low plasma concentrations of pyridoxal 5'-phosphate (PLP) are common in renal transplant recipients (RTRs) and confer increased risk of long-term mortality. To our knowledge, it is not known whether low plasma PLP concentrations have functional (i.e., intracellular) consequences and, if so, whether such consequences are associated with increased risk of mortality.Objectives: We assessed the association of plasma PLP with functional vitamin B-6 status and explored the potential association of functional vitamin B-6 status with long-term mortality in RTRs.Design: In a longitudinal cohort of 678 stable RTRs with a median follow-up of 5.3 y (IQR: 4.8-6.1 y) and 297 healthy controls, PLP, plasma 3-hydroxykynurenine (3-HK), and xanthurenic acid (XA) were analyzed via validated assays. PLP was used as direct biomarker for vitamin B-6 status, and the 3-HK:XA ratio was used as functional biomarker of vitamin B-6 status with a higher ratio reflecting worse functional vitamin B-6 status.Results: Median PLP, 3-HK, and XA concentrations were 41 nmol/L (IQR: 29-60 nmol/L), 40.1 nmol/L (IQR: 33.0-48.0 nmol/L), and 19.1 nmol/L (IQR: 14.5-24.9 nmol/L), respectively, in healthy controls compared with 29 nmol/L (IQR: 17-50 nmol/L), 61.5 nmol/L (IQR: 45.6-86.5 nmol/L), and 25.5 nmol/L (IQR: 17.2-40.0 nmol/L), respectively, in RTRs (all P < 0.001). RTRs had a higher median 3-HK:XA ratio (2.38; IQR: 1.68-3.49) than did healthy controls (2.13; IQR: 1.63-2.71) (P < 0.05). In RTRs, the 3-HK:XA ratio was inversely associated with plasma PLP (β = -0.21, P < 0.001). Moreover, a higher 3-HK:XA ratio was independently associated with increased risk of all-cause mortality (HR per SD increment: 1.30; 95% CI: 1.13, 1.49), cancer mortality (HR per SD increment: 1.47; 95% CI: 1.12, 1.95), and infectious disease mortality (HR per SD increment: 1.50; 95% CI: 1.21, 1.86) in RTRs.Conclusions: Vitamin B-6-deficient RTRs have a worse functional vitamin B-6 status than do healthy controls and vitamin B-6-sufficient RTRs. Worse functional vitamin B-6 status in RTRs is independently associated with an increased risk of mortality particularly because of cancer and infectious disease. This trial was registered at clinicaltrials.gov as NCT02811835.
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Affiliation(s)
- Isidor Minović
- Departments of Internal Medicine and .,Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands.,Top Institute Food and Nutrition, Wageningen, Netherlands
| | - Anna van der Veen
- Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Martijn van Faassen
- Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Ineke J Riphagen
- Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | | | - Claude van der Ley
- Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | | | - Johanna M Geleijnse
- Division of Human Nutrition, Wageningen University, Wageningen, Netherlands; and
| | | | | | - Ido P Kema
- Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Stephan Jl Bakker
- Departments of Internal Medicine and.,Top Institute Food and Nutrition, Wageningen, Netherlands
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