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Chalifour B, Holzhausen EA, Lim JJ, Yeo EN, Shen N, Jones DP, Peterson BS, Goran MI, Liang D, Alderete TL. The potential role of early life feeding patterns in shaping the infant fecal metabolome: implications for neurodevelopmental outcomes. NPJ METABOLIC HEALTH AND DISEASE 2023; 1:2. [PMID: 38299034 PMCID: PMC10828959 DOI: 10.1038/s44324-023-00001-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 10/24/2023] [Indexed: 02/02/2024]
Abstract
Infant fecal metabolomics can provide valuable insights into the associations of nutrition, dietary patterns, and health outcomes in early life. Breastmilk is typically classified as the best source of nutrition for nearly all infants. However, exclusive breastfeeding may not always be possible for all infants. This study aimed to characterize associations between levels of mixed breastfeeding and formula feeding, along with solid food consumption and the infant fecal metabolome at 1- and 6-months of age. As a secondary aim, we examined how feeding-associated metabolites may be associated with early life neurodevelopmental outcomes. Fecal samples were collected at 1- and 6-months, and metabolic features were assessed via untargeted liquid chromatography/high-resolution mass spectrometry. Feeding groups were defined at 1-month as 1) exclusively breastfed, 2) breastfed >50% of feedings, or 3) formula fed ≥50% of feedings. Six-month groups were defined as majority breastmilk (>50%) or majority formula fed (≥50%) complemented by solid foods. Neurodevelopmental outcomes were assessed using the Bayley Scales of Infant Development at 2 years. Changes in the infant fecal metabolome were associated with feeding patterns at 1- and 6-months. Feeding patterns were associated with the intensities of a total of 57 fecal metabolites at 1-month and 25 metabolites at 6-months, which were either associated with increased breastmilk or increased formula feeding. Most breastmilk-associated metabolites, which are involved in lipid metabolism and cellular processes like cell signaling, were associated with higher neurodevelopmental scores, while formula-associated metabolites were associated with lower neurodevelopmental scores. These findings offer preliminary evidence that feeding patterns are associated with altered infant fecal metabolomes, which may be associated with cognitive development later in life.
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Affiliation(s)
- Bridget Chalifour
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO USA
| | | | - Joseph J. Lim
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO USA
| | - Emily N. Yeo
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO USA
| | - Natalie Shen
- Rollins School of Public Health, Emory University, Atlanta, GA USA
| | - Dean P. Jones
- School of Medicine, Emory University, Atlanta, GA USA
| | | | | | - Donghai Liang
- Rollins School of Public Health, Emory University, Atlanta, GA USA
| | - Tanya L. Alderete
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO USA
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Gao H, He C, Hua R, Liang C, Wang B, Du Y, Xin S, Guo Y, Gao L, Zhang L, Shang H, Xu J. Underlying beneficial effects of Rhubarb on constipation-induced inflammation, disorder of gut microbiome and metabolism. Front Pharmacol 2022; 13:1048134. [PMID: 36545319 PMCID: PMC9760883 DOI: 10.3389/fphar.2022.1048134] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 11/24/2022] [Indexed: 12/12/2022] Open
Abstract
Background: Constipation is a common syndrome and a worldwide healthy problem. Constipation patients are becoming younger, with a 29.6% overall prevalence in children, which has captured significant attention because of its epigenetic rejuvenation and recurrent episodes. Despite the usage of rhubarb extract to relieve constipation, novel targets and genes implicated in target-relevant pathways with remarkable functionalities should still be sought for. Materials and methods: We established a reliable constipation model in C57B/6N male mice using intragastric administration diphenoxylate, and the eligible subjects received 600 mg/25 g rhubarb extract to alleviate constipation. Resultant constipation was morphological and genetically compared with the specimen from different groups. Results: Constipation mice exhibited thicker muscle layers, higher levels of cytokines, including IL-17 and IL-23, and lower content of IL-22. Bacterial abundance and diversity varied tremendously. Notably, the alterations were reversed following rhubarb extract treatment. Additionally, Constipation also had a substantial impact on short-chain fatty acids (SCFAs), medium- and long-chain fatty acids (MLCFAs), and the expression of SCFA receptors, GPR41 and GPR43. Conclusion: This thesis has provided insight that rhubarb extract promoted the flexibility of collagen fiber, reduced pro-inflammatory cytokines, enhanced anti-inflammatory cytokines, and maintained gut microflora balance with potential impacts on the fatty acid and polyamine metabolism.
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Affiliation(s)
- Han Gao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Chengwei He
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Rongxuan Hua
- Department of Clinical Medicine, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Chen Liang
- Department of Clinical Medicine, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Boya Wang
- Undergraduate Student of 2018 Eight Program of Clinical Medicine, Peking University Peoples Hospital, Beijing, China
| | - Yixuan Du
- Department of Oral Medicine, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Shuzi Xin
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Yuexin Guo
- Department of Oral Medicine, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Lei Gao
- Department of Biomedical Informatics, School of Biomedical Engineering, Capital Medical University, Beijing, China
| | - Lucia Zhang
- Class of 2025, Loomis Chaffee School, Windsor, CT, United States
| | - Hongwei Shang
- Experimental Center for Morphological Research Platform, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Jingdong Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China,*Correspondence: Jingdong Xu,
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Wan J, Zhang Y, He W, Tian Z, Lin J, Liu Z, Li Y, Chen M, Han S, Liang J, Shi Y, Wang X, Zhou L, Cao Y, Liu J, Wu K. Gut Microbiota and Metabolite Changes in Patients With Ulcerative Colitis and Clostridioides difficile Infection. Front Microbiol 2022; 13:802823. [PMID: 35756051 PMCID: PMC9231613 DOI: 10.3389/fmicb.2022.802823] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 04/25/2022] [Indexed: 12/12/2022] Open
Abstract
Background Patients with ulcerative colitis (UC) are at an increased risk of developing Clostridioides difficile infection (CDI), which in turn leads to poor outcomes. The gut microbial structure and metabolites in patients with UC and CDI have been scarcely studied. We hypothesized that CDI changes the gut microbiota and metabolites of patients with UC. Materials and Methods This study included 89 patients: 30 healthy controls (HC group), 29 with UC alone (UCN group), and 30 with UC and CDI (UCP group). None of the participants has been exposed to antibiotic treatments during the 3 months before stool collection. Stool samples were analyzed using 16S rRNA gene sequencing of the V3–V4 region and gas chromatography tandem time-of-flight mass spectrometry. Results The UCN group displayed lower diversity and richness in gut microbiota and a higher relative abundance of the phylum Proteobacteria than the HC group. There were no significant differences between the UCN and UCP groups in the α-diversity indices. The UCP group contained a higher relative abundance of the genera Clostridium sensu stricto, Clostridium XI, Aggregatibacter, and Haemophilus, and a lower relative abundance of genera Clostridium XIVb and Citrobacter than the UCN group. In the UCP group, the increased metabolites included putrescine, maltose, 4-hydroxybenzoic acid, 4-hydroxybutyrate, and aminomalonic acid. Spearman’s correlation analysis revealed that these increased metabolites negatively correlated with Clostridium XlVb and positively correlated with the four enriched genera. However, the correlations between hemoglobin and metabolites were contrary to the correlations between erythrocyte sedimentation rate and high-sensitivity C-reactive protein and metabolites. Conclusion Our study identified 11 differential genera and 16 perturbed metabolites in patients with UC and CDI compared to those with UC alone. These findings may guide the design of research on potential mechanisms and specific treatments for CDI in patients with UC.
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Affiliation(s)
- Jian Wan
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an, China
| | - Yujie Zhang
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an, China
- Department of Histology and Embryology, School of Basic Medicine, Xi’an Medical University, Xi’an, China
| | - Wenfang He
- Department of Clinical Laboratory, Xijing Hospital, Fourth Military Medical University, Xi’an, China
| | - Zuhong Tian
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an, China
| | - Junchao Lin
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an, China
| | - Zhenzhen Liu
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an, China
| | - Yani Li
- Department of Gastroenterology, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Min Chen
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an, China
| | - Shuang Han
- Department of Gastroenterology, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Jie Liang
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an, China
| | - Yongquan Shi
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an, China
| | - Xuan Wang
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi’an, China
| | - Lei Zhou
- Department of Clinical Laboratory, Xijing Hospital, Fourth Military Medical University, Xi’an, China
| | - Ying Cao
- Department of Life Science, Northwest University, Xi’an, China
- *Correspondence: Ying Cao,
| | - Jiayun Liu
- Department of Clinical Laboratory, Xijing Hospital, Fourth Military Medical University, Xi’an, China
- Jiayun Liu,
| | - Kaichun Wu
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an, China
- Kaichun Wu,
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Bekebrede AF, Keijer J, Gerrits WJJ, de Boer VCJ. The Molecular and Physiological Effects of Protein-Derived Polyamines in the Intestine. Nutrients 2020; 12:E197. [PMID: 31940783 PMCID: PMC7020012 DOI: 10.3390/nu12010197] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/08/2020] [Accepted: 01/09/2020] [Indexed: 02/07/2023] Open
Abstract
Consumption of a high-protein diet increases protein entry into the colon. Colonic microbiota can ferment proteins, which results in the production of protein fermentation end-products, like polyamines. This review describes the effects of polyamines on biochemical, cellular and physiological processes, with a focus on the colon. Polyamines (mainly spermine, spermidine, putrescine and cadaverine) are involved in the regulation of protein translation and gene transcription. In this, the spermidine-derived hypusination modification of EIF5A plays an important role. In addition, polyamines regulate metabolic functions. Through hypusination of EIF5A, polyamines also regulate translation of mitochondrial proteins, thereby increasing their expression. They can also induce mitophagy through various pathways, which helps to remove damaged organelles and improves cell survival. In addition, polyamines increase mitochondrial substrate oxidation by increasing mitochondrial Ca2+-levels. Putrescine can even serve as an energy source for enterocytes in the small intestine. By regulating the formation of the mitochondrial permeability transition pore, polyamines help maintain mitochondrial membrane integrity. However, their catabolism may also reduce metabolic functions by depleting intracellular acetyl-CoA levels, or through production of toxic by-products. Lastly, polyamines support gut physiology, by supporting barrier function, inducing gut maturation and increasing longevity. Polyamines thus play many roles, and their impact is strongly tissue- and dose-dependent. However, whether diet-derived increases in colonic luminal polyamine levels also impact intestinal physiology has not been resolved yet.
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Affiliation(s)
- Anna F. Bekebrede
- Human and Animal Physiology, Wageningen University and Research, 6708 WD Wageningen, The Netherlands; (A.F.B.); (J.K.)
- Animal Nutrition Group, Wageningen University and Research, 6708 WD Wageningen, The Netherlands;
| | - Jaap Keijer
- Human and Animal Physiology, Wageningen University and Research, 6708 WD Wageningen, The Netherlands; (A.F.B.); (J.K.)
| | - Walter J. J. Gerrits
- Animal Nutrition Group, Wageningen University and Research, 6708 WD Wageningen, The Netherlands;
| | - Vincent C. J. de Boer
- Human and Animal Physiology, Wageningen University and Research, 6708 WD Wageningen, The Netherlands; (A.F.B.); (J.K.)
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Le Gall G, Noor SO, Ridgway K, Scovell L, Jamieson C, Johnson IT, Colquhoun IJ, Kemsley EK, Narbad A. Metabolomics of Fecal Extracts Detects Altered Metabolic Activity of Gut Microbiota in Ulcerative Colitis and Irritable Bowel Syndrome. J Proteome Res 2011; 10:4208-18. [DOI: 10.1021/pr2003598] [Citation(s) in RCA: 251] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Gwénaëlle Le Gall
- Institute of Food Research, Norwich Research Park, Norwich NR4 7UA, United Kingdom
| | - Samah O. Noor
- Institute of Food Research, Norwich Research Park, Norwich NR4 7UA, United Kingdom
| | - Karyn Ridgway
- Institute of Food Research, Norwich Research Park, Norwich NR4 7UA, United Kingdom
| | - Louise Scovell
- The Ipswich Hospital NHS Trust, Heath Road, Ipswich IP4 5PD, United Kingdom
| | - Crawford Jamieson
- Norfolk and Norwich University Hospital, Colney Lane, Norwich NR4 7UY, United Kingdom
| | - Ian T. Johnson
- Institute of Food Research, Norwich Research Park, Norwich NR4 7UA, United Kingdom
| | - Ian J. Colquhoun
- Institute of Food Research, Norwich Research Park, Norwich NR4 7UA, United Kingdom
| | - E. Kate Kemsley
- Institute of Food Research, Norwich Research Park, Norwich NR4 7UA, United Kingdom
| | - Arjan Narbad
- Institute of Food Research, Norwich Research Park, Norwich NR4 7UA, United Kingdom
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Apás AL, Dupraz J, Ross R, González SN, Arena ME. Probiotic administration effect on fecal mutagenicity and microflora in the goat's gut. J Biosci Bioeng 2010; 110:537-40. [DOI: 10.1016/j.jbiosc.2010.06.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2010] [Revised: 05/27/2010] [Accepted: 06/11/2010] [Indexed: 10/19/2022]
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7
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Short-chain fatty acids and polyamines in the pathogenesis of necrotizing enterocolitis: Kinetics aspects in gnotobiotic quails. Anaerobe 2009; 15:138-44. [PMID: 19233303 DOI: 10.1016/j.anaerobe.2009.02.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2008] [Revised: 02/09/2009] [Accepted: 02/10/2009] [Indexed: 12/12/2022]
Abstract
Despite years of investigation, pathogenesis of necrotizing enterocolitis (NEC) remains elusive. Bacterial metabolites were implicated by several authors but their roles remain controversial. The aim of our study was to investigate the role of SCFAs and polyamines through a kinetic study of histological and macroscopical digestive lesions in monobiotic quails. Germ-free quails, inoculated with a Clostridium butyricum strain involved in a NEC case, were fed or not with a diet including lactose (7%). Quails were sacrificed at various times between D7 and D24 after bacterial inoculation. NEC-like lesions, i.e. thickening, pneumatosis, and hemorrhages, occurred only in lactose-fed quails and increased with time. The main histological characteristics were infiltrates of mononuclear cells, then heterophilic cells, then gas cyst and necrosis. The first event observed, before histological and macroscopical lesions, is a high production of butyric acid, which precedes an increase of iNOS gene expression. No difference in polyamines contents depending on the diet was observed. These results show the major role of butyric acid produced by commensal bacteria in the onset of the digestive lesions.
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8
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Larqué E, Sabater-Molina M, Zamora S. Biological significance of dietary polyamines. Nutrition 2006; 23:87-95. [PMID: 17113752 DOI: 10.1016/j.nut.2006.09.006] [Citation(s) in RCA: 187] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2006] [Revised: 09/15/2006] [Accepted: 09/22/2006] [Indexed: 11/16/2022]
Abstract
Polyamines are classically known by their names of putrescine, spermine, and spermidine. They are synthesized endogenously from ornithine and are interconvertible. In addition, an exogenous supply of polyamines is provided by dietary intake and by intestinal absorption from the products of bacterial metabolism. Polyamine uptake occurs almost entirely in the gut, and afterward the various forms are metabolized in different tissues under the strict regulation of ornithine decarboxylase, which is the first enzyme involved in their synthesis. Polyamines are eliminated from the organism by means of oxidation reactions, appearing in urine in all their metabolic forms. Polyamines play an important role in regulating cell growth and proliferation, the stabilization of negative charges of DNA, RNA transcription, protein synthesis, apoptosis, and the regulation of the immune response. They are components of breast milk and might be important in neonatal gut maturation, for which reason the possible supplementation of infant formulas with these compounds is under study.
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Affiliation(s)
- Elvira Larqué
- Department of Physiology, Faculty of Biology, University of Murcia, Murcia, Spain.
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Yohannes E, Thurber AE, Wilks JC, Tate DP, Slonczewski JL. Polyamine stress at high pH in Escherichia coli K-12. BMC Microbiol 2005; 5:59. [PMID: 16223443 PMCID: PMC1274320 DOI: 10.1186/1471-2180-5-59] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2005] [Accepted: 10/13/2005] [Indexed: 12/04/2022] Open
Abstract
Background Polyamines such as spermine and spermidine are required for growth of Escherichia coli; they interact with nucleic acids, and they bind to ribosomes. Polyamines block porins and decrease membrane permeability, activities that may protect cells in acid. At high concentrations, however, polyamines impair growth. They impair growth more severely at high pH, probably due to their increased uptake as membrane-permeant weak bases. The role of pH is critical in understanding polyamine stress. Results The effect of polyamines was tested on survival of Escherichia coli K-12 W3110 in extreme acid or base (pH conditions outside the growth range). At pH 2, 10 mM spermine increased survival by 2-fold, and putrescine increased survival by 30%. At pH 9.8, however, E. coli survival was decreased 100-fold by 10 mM spermine, putrescine, cadaverine, or spermidine. At pH 8.5, spermine decreased the growth rate substantially, whereas little effect was seen at pH 5.5. Spermidine required ten-fold higher concentrations to impair growth. On proteomic 2-D gels, spermine and spermidine caused differential expression of 31 different proteins. During log-phase growth at pH 7.0, 1 mM spermine induced eight proteins, including PykF, GlpK, SerS, DeaD, OmpC and OmpF. Proteins repressed included acetate-inducible enzymes (YfiD, Pta, Lpd) as well as RapA (HepA), and FabB. At pH 8.5, spermine induced additional proteins: TnaA, OmpA, YrdA and NanA (YhcJ) and also repressed 17 proteins. Four of the proteins that spermine induced (GlpK, OmpA, OmpF, TnaA) and five that were repressed (Lpd, Pta, SucB, TpiA, YfiD) show similar induction or repression, respectively, in base compared to acid. Most of these base stress proteins were also regulated by spermidine, but only at ten-fold higher concentration (10 mM) at high pH (pH 8.5). Conclusion Polyamines increase survival in extreme acid, but decrease E. coli survival in extreme base. Growth inhibition by spermine and spermidine requires neutral or higher pH. At or above pH 7, spermine and spermidine regulate specific proteins, many of which are known to be regulated by base stress. High pH amplifies polyamine stress; and naturally occurring polyamines may play an important role in base stress.
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Affiliation(s)
| | - Amy E Thurber
- Department of Biology, Kenyon College, Gambier, OH 43022
| | | | - Daniel P Tate
- Department of Biology, Kenyon College, Gambier, OH 43022
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Hudson EA, Howells LM, Gallacher-Horley B, Fox LH, Gescher A, Manson MM. Growth-inhibitory effects of the chemopreventive agent indole-3-carbinol are increased in combination with the polyamine putrescine in the SW480 colon tumour cell line. BMC Cancer 2003; 3:2. [PMID: 12525265 PMCID: PMC149232 DOI: 10.1186/1471-2407-3-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2002] [Accepted: 01/14/2003] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Many tumours undergo disregulation of polyamine homeostasis and upregulation of ornithine decarboxylase (ODC) activity, which can promote carcinogenesis. In animal models of colon carcinogenesis, inhibition of ODC activity by difluoromethylornithine (DFMO) has been shown to reduce the number and size of colon adenomas and carcinomas. Indole-3-carbinol (I3C) has shown promising chemopreventive activity against a range of human tumour cell types, but little is known about the effect of this agent on colon cell lines. Here, we investigated whether inhibition of ODC by I3C could contribute to a chemopreventive effect in colon cell lines. METHODS Cell cycle progression and induction of apoptosis were assessed by flow cytometry. Ornithine decarboxylase activity was determined by liberation of CO2 from 14C-labelled substrate, and polyamine levels were measured by HPLC. RESULTS I3C inhibited proliferation of the human colon tumour cell lines HT29 and SW480, and of the normal tissue-derived HCEC line, and at higher concentrations induced apoptosis in SW480 cells. The agent also caused a decrease in ODC activity in a dose-dependent manner. While administration of exogenous putrescine reversed the growth-inhibitory effect of DFMO, it did not reverse the growth-inhibition following an I3C treatment, and in the case of the SW480 cell line, the effect was actually enhanced. In this cell line, combination treatment caused a slight increase in the proportion of cells in the G2/M phase of the cell cycle, and increased the proportion of cells undergoing necrosis, but did not predispose cells to apoptosis. Indole-3-carbinol also caused an increase in intracellular spermine levels, which was not modulated by putrescine co-administration. CONCLUSION While indole-3-carbinol decreased ornithine decarboxylase activity in the colon cell lines, it appears unlikely that this constitutes a major mechanism by which the agent exerts its antiproliferative effect, although accumulation of spermine may cause cytotoxicity and contribute to cell death. The precise mechanism by which putrescine enhances the growth inhibitory effect of the agent remains to be elucidated, but does result in cells undergoing necrosis, possibly following accumulation in the G2/M phase of the cell cycle.
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Affiliation(s)
- E Ann Hudson
- Cancer Biomarkers and Prevention Group, Departments of Biochemistry & Oncology, University of Leicester, Leicester, LE1 7RH, UK
| | - Lynne M Howells
- Cancer Biomarkers and Prevention Group, Departments of Biochemistry & Oncology, University of Leicester, Leicester, LE1 7RH, UK
| | | | - Louise H Fox
- Cancer Biomarkers and Prevention Group, Departments of Biochemistry & Oncology, University of Leicester, Leicester, LE1 7RH, UK
| | - Andreas Gescher
- Cancer Biomarkers and Prevention Group, Department of Oncology, University of Leicester, Leicester, LE2 7LX, UK
| | - Margaret M Manson
- Cancer Biomarkers and Prevention Group, Departments of Biochemistry & Oncology, University of Leicester, Leicester, LE1 7RH, UK
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Pineda R, Knapp AD, Hoekstra JC, Johnson DC. Integrated square-wave electrochemical detection of biogenic amines in soybean seeds following their separations by liquid chromatography. Anal Chim Acta 2001. [DOI: 10.1016/s0003-2670(01)01341-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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12
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Farriol M, Segovia-Silvestre T, Castellanos JM, Venereo Y, Orta X. Role of putrescine in cell proliferation in a colon carcinoma cell line. Nutrition 2001; 17:934-8. [PMID: 11744344 DOI: 10.1016/s0899-9007(01)00670-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Putrescine, the precursor for higher polyamine biosynthesis, is necessary for cell growth in mammals. Ornithine decarboxylase (ODC) activity and polyamine production are increased in neoplastic cells. Using colon cancer cell line derived from a tumor with high metastatic potential (CT-26), our objective was to study the effect of exogenous putrescine on ODC regulation, polyamine metabolism, and cell proliferation. METHODS Cells cultured with fetal calf serum were exposed to 100, 550, and 1000 microM putrescine for 24 h. RESULTS Intracellular free putrescine, determined by high-performance liquid chromatography, showed a statistically significant increase in exposed cells compared with controls and a significant correlation with levels of the metabolite present in the medium (r = 0.93; P < 0.001). Bromodeoxyuridine incorporation into newly synthesized DNA, a marker of cell proliferation, showed a statistically significant increase in the three putrescine groups as opposed to the control group. In samples with added aminoguanidine, significant increases in DNA synthesis were observed in the 550- and 1000-microM putrescine groups as opposed to the control group. Spermidine and spermine intracellular contents in all three putrescine-treated groups remained below control levels. No statistical differences in ODC enzymatic activity or ODC mRNA content were observed. Newly incorporated putrescine stimulated colon tumor cell growth. CONCLUSIONS Because neither enhanced conversion into the higher polyamines nor aminoguanidine inhibition of proliferation was observed, we suggest that this effect can be attributed to the putrescine molecule itself.
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Affiliation(s)
- M Farriol
- Centro de Investigaciones Bioquímicas y Biología Molecular, Barcelona, Spain.
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13
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Milovica V, Turchanowa L, Khomutov AR, Khomutov RM, Caspary WF, Stein J. Hydroxylamine-containing inhibitors of polyamine biosynthesis and impairment of colon cancer cell growth. Biochem Pharmacol 2001; 61:199-206. [PMID: 11163334 DOI: 10.1016/s0006-2952(00)00549-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Polyamine synthesis (by the action of ornithine decarboxylase [ODC] and S-adenosylmethionine decarboxylase [SAMDC]) and polyamine content are high in colon cancer. In addition, colonic lumen is rich in polyamines synthesised by colonic microflora; for this reason, polyamine depletion in colon cancer may be a logical approach to impair growth of colon cancer cells. We evaluated highly specific and reportedly non-toxic hydroxylamine-containing inhibitors of ODC (1-aminooxy-3-aminopropane, APA) and SAMDC (S-(5'-deoxy-5'-adenosyl)-methylthioethyl-hydroxylamine, AMA) in human colon cancer cells (Caco-2 and HT-29) in culture. APA depleted ODC activity within 24 hr, more rapidly than did difluoromethylornithine. APA and AMA in combination (100 microM each) reduced ODC and SAMDC activities to undetectable levels within 24 hr and intracellular polyamines to 8-23% of control. The resulting growth arrest could be reversed only by twice as much spermidine as is physiologically present in the colonic lumen. In concentrations sufficient to deplete growth, APA and AMA were not toxic. Simultaneous treatment with APA, AMA, and 5-fluorouracil reduced colon cancer cell survival more potently than treatment with 5-fluorouracil alone. The hydroxylamine-containing ODC and SAMDC inhibitors APA and AMA are potent inhibitors of colon cancer cell proliferation and might be therapeutically promising in colon cancer.
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Affiliation(s)
- V Milovica
- 2nd Department of Medicine, Johann Wolfgang Goethe University, Frankfurt, Germany.
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Milovic V, Stein J, Odera G, Gilani S, Murphy GM. Low-dose deoxycholic acid stimulates putrescine uptake in colon cancer cells (Caco-2). Cancer Lett 2000; 154:195-200. [PMID: 10806308 DOI: 10.1016/s0304-3835(00)00400-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Deoxycholic acid (DCA) has long been implicated as tumour-promoting agent in the colon. Polyamines are necessary for cell proliferation, they are accumulated in high amounts in colon cancer cells, and their concentrations in the colonic lumen can reach millimolar levels. The aim of this study was to investigate the effects of physiological DCA concentrations on proliferation and polyamine content in human colon cancer cells (Caco-2) in culture. Over an initial 48 h in culture, DCA stimulated Caco-2 cell proliferation rate three-fold, reaching a maximum with 20 microM DCA. DCA-induced increases in ornithine decarboxylase (ODC) activity corresponded to peak proliferation rates, occurring only during the initial 48 h of cell proliferation. Treatment with low-dose DCA resulted in a two-fold increase in putrescine uptake, first noted after 2 days in culture, but persisting until the cells became confluent (day 5). Both basal and DCA-stimulated putrescine uptake in Caco-2 cells were saturable. Kinetic analysis of the uptake data showed that DCA-stimulated putrescine uptake was due to an increase in the capacity of the putative putrescine transporter, without changes in its affinity, therefore implying an increased number of putrescine transporters in the cell membrane, without change in their structure.
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Affiliation(s)
- V Milovic
- Gastroenterology Unit, Division of Medicine, 4th Floor, North Wing, UMDS/Guy's, King's & St Thomas' Hospitals, Lambeth Palace Road, London, UK.
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