501
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Brown DG, Rao S, Weir TL, O'Malia J, Bazan M, Brown RJ, Ryan EP. Metabolomics and metabolic pathway networks from human colorectal cancers, adjacent mucosa, and stool. Cancer Metab 2016; 4:11. [PMID: 27275383 PMCID: PMC4893840 DOI: 10.1186/s40170-016-0151-y] [Citation(s) in RCA: 161] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 05/16/2016] [Indexed: 12/18/2022] Open
Abstract
Background Colorectal cancers (CRC) are associated with perturbations in cellular amino acids, nucleotides, pentose-phosphate pathway carbohydrates, and glycolytic, gluconeogenic, and tricarboxylic acid intermediates. A non-targeted global metabolome approach was utilized for exploring human CRC, adjacent mucosa, and stool. In this pilot study, we identified metabolite profile differences between CRC and adjacent mucosa from patients undergoing colonic resection. Metabolic pathway analyses further revealed relationships between complex networks of metabolites. Methods Seventeen CRC patients participated in this pilot study and provided CRC, adjacent mucosa ~10 cm proximal to the tumor, and stool. Metabolomes were analyzed by gas chromatography-mass spectrometry (GC/MS) and ultra-performance liquid chromatography-mass spectrometry (UPLC-MS/MS). All of the library standard identifications were confirmed and further analyzed via MetaboLyncTM for metabolic network interactions. Results There were a total of 728 distinct metabolites identified from colonic tissue and stool matrices. Nineteen metabolites significantly distinguished CRC from adjacent mucosa in our patient-matched cohort. Glucose-6-phosphate and fructose-6-phosphate demonstrated 0.64-fold and 0.75-fold lower expression in CRC compared to mucosa, respectively, whereas isobar: betaine aldehyde, N-methyldiethanolamine, and adenylosuccinate had 2.68-fold and 1.88-fold higher relative abundance in CRC. Eleven of the 19 metabolites had not previously been reported for CRC relevance. Metabolic pathway analysis revealed significant perturbations of short-chain fatty acid metabolism, fructose, mannose, and galactose metabolism, and glycolytic, gluconeogenic, and pyruvate metabolism. In comparison to the 500 stool metabolites identified from human CRC patients, only 215 of those stool metabolites were also detected in tissue. This CRC and stool metabolome investigation identified novel metabolites that may serve as key small molecules in CRC pathogenesis, confirmed the results from previously reported CRC metabolome studies, and showed networks for metabolic pathway aberrations. In addition, we found differences between the CRC and stool metabolomes. Conclusions Stool metabolite profiles were limited for direct associations with CRC and adjacent mucosa, yet metabolic pathways were conserved across both matrices. Larger patient-matched CRC, adjacent non-cancerous colonic mucosa, and stool cohort studies for metabolite profiling are needed to validate these small molecule differences and metabolic pathway aberrations for clinical application to CRC control, treatment, and prevention. Electronic supplementary material The online version of this article (doi:10.1186/s40170-016-0151-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Dustin G Brown
- Department of Environmental and Radiological Health Sciences, Colorado State University, 200 West Lake Street, 1680 Campus Delivery, Fort Collins, CO 80523 USA
| | - Sangeeta Rao
- Department of Clinical Sciences, Colorado State University, Fort Collins, CO 80523 USA
| | - Tiffany L Weir
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO 80523 USA
| | - Joanne O'Malia
- University of Colorado Health-North, Fort Collins, CO 80522 USA
| | - Marlon Bazan
- University of Colorado Health-North, Fort Collins, CO 80522 USA
| | - Regina J Brown
- Division of Medical Oncology, University of Colorado School of Medicine, Aurora, CO 80045 USA
| | - Elizabeth P Ryan
- Department of Environmental and Radiological Health Sciences, Colorado State University, 200 West Lake Street, 1680 Campus Delivery, Fort Collins, CO 80523 USA ; Department of Clinical Sciences, Colorado State University, Fort Collins, CO 80523 USA
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502
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Khan S, Jena G. Sodium butyrate reduces insulin-resistance, fat accumulation and dyslipidemia in type-2 diabetic rat: A comparative study with metformin. Chem Biol Interact 2016; 254:124-34. [PMID: 27270450 DOI: 10.1016/j.cbi.2016.06.007] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 04/29/2016] [Accepted: 06/03/2016] [Indexed: 12/19/2022]
Abstract
Recent evidences highlighted that histone deacetylases (HDACs) can deacetylate the histone, various transcription factors and regulatory proteins, which directly or indirectly affect glucose metabolism. The present study aimed to evaluate the comparative effects of sodium butyrate (NaB) and metformin on the glucose homeostasis, insulin-resistance, fat accumulation and dyslipidemia in type-2 diabetic rat. Diabetes was developed in Sprague-Dawley rats by the combination of high-fat diet (HFD) and low dose streptozotocin (STZ, 35 mg/kg). NaB at the doses of 200 and 400 mg/kg twice daily as well as metformin (as a positive control) 150 mg/kg twice daily for 10 consecutive weeks were administered by i.p. and oral route, respectively. NaB treatment significantly reduced the plasma glucose, HbA1c, insulin-resistance, dyslipidemia and gluconeogenesis, which are comparable to metformin treatment. Further, NaB treatment ameliorated the micro- and macro-vesicular steatosis in liver and fat deposition in brown adipose tissue, white adipose tissue (adipocytes hypertrophy) as well as pancreatic beta-cell damage. In the present study, both NaB and metformin inhibited the diabetes-associated increased HDACs activity, thereby increased the acetylation of histone H3 in liver. The present findings demonstrated that NaB and metformin reduced insulin-resistance, dyslipidemia, fat accumulation and gluconeogenesis thereby improved the glucose homeostasis in rat. Thus, NaB might be a promising molecule for the prevention and treatment of type-2 diabetes and dyslipidemia.
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Affiliation(s)
- Sabbir Khan
- Facility for Risk Assessment and Intervention Studies, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S. Nagar, Punjab 160062, India.
| | - Gopabandhu Jena
- Facility for Risk Assessment and Intervention Studies, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S. Nagar, Punjab 160062, India.
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503
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Bultman SJ. Interplay between diet, gut microbiota, epigenetic events, and colorectal cancer. Mol Nutr Food Res 2016; 61. [PMID: 27138454 DOI: 10.1002/mnfr.201500902] [Citation(s) in RCA: 164] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 03/21/2016] [Accepted: 03/25/2016] [Indexed: 12/24/2022]
Abstract
Despite the success of colonoscopy screening, colorectal cancer (CRC) remains one of the most common and deadly cancers, and CRC incidence is rising in some countries where screening is not routine and populations have recently switched from traditional diets to western diets. Diet and energy balance influence CRC by multiple mechanisms. They modulate the composition and function of gut microbiota, which have a prodigious metabolic capacity and can produce oncometabolites or tumor-suppressive metabolites depending, in part, on which dietary factors and digestive components are present in the GI tract. Gut microbiota also have a profound effect on immune cells in the lamina propria, which influences inflammation and subsequently CRC. Nutrient availability, which is an outcome of diet and energy balance, determines the abundance of certain energy metabolites that are essential co-factors for epigenetic enzymes and therefore impinges upon epigenetic regulation of gene expression. Aberrant epigenetic marks accumulate during CRC, and epimutations that are selected for drive tumorigenesis by causing transcriptome profiles to diverge from the cell of origin. In some instances, the above mechanisms are intertwined as exemplified by dietary fiber being metabolized by colonic bacteria into butyrate, which is both a short-chain fatty acid (SCFA) and a histone deacetylase (HDAC) inhibitor that epigenetically upregulates tumor-suppressor genes in CRC cells and anti-inflammatory genes in immune cells.
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Affiliation(s)
- Scott J Bultman
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA
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504
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Koh A, De Vadder F, Kovatcheva-Datchary P, Bäckhed F. From Dietary Fiber to Host Physiology: Short-Chain Fatty Acids as Key Bacterial Metabolites. Cell 2016; 165:1332-1345. [DOI: 10.1016/j.cell.2016.05.041] [Citation(s) in RCA: 2177] [Impact Index Per Article: 272.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Indexed: 12/12/2022]
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505
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Cossais F, Durand T, Chevalier J, Boudaud M, Kermarrec L, Aubert P, Neveu I, Naveilhan P, Neunlist M. Postnatal development of the myenteric glial network and its modulation by butyrate. Am J Physiol Gastrointest Liver Physiol 2016; 310:G941-51. [PMID: 27056724 DOI: 10.1152/ajpgi.00232.2015] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 03/16/2016] [Indexed: 02/08/2023]
Abstract
The postnatal period is crucial for the development of gastrointestinal (GI) functions. The enteric nervous system is a key regulator of GI functions, and increasing evidences indicate that 1) postnatal maturation of enteric neurons affect the development of GI functions, and 2) microbiota-derived short-chain fatty acids can be involved in this maturation. Although enteric glial cells (EGC) are central regulators of GI functions, the postnatal evolution of their phenotype remains poorly defined. We thus characterized the postnatal evolution of EGC phenotype in the colon of rat pups and studied the effect of short-chain fatty acids on their maturation. We showed an increased expression of the glial markers GFAP and S100β during the first postnatal week. As demonstrated by immunohistochemistry, a structured myenteric glial network was observed at 36 days in the rat colons. Butyrate inhibited EGC proliferation in vivo and in vitro but had no effect on glial marker expression. These results indicate that the EGC myenteric network continues to develop after birth, and luminal factors such as butyrate endogenously produced in the colon may affect this development.
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Affiliation(s)
- François Cossais
- INSERM, U913, Nantes, France; Université Nantes, Nantes, France; CHU Nantes, Hôtel Dieu, Institut des Maladies de l'Appareil Digestif, France; and Centre de Recherche en Nutrition Humaine, Nantes, France
| | - Tony Durand
- INSERM, U913, Nantes, France; Université Nantes, Nantes, France; CHU Nantes, Hôtel Dieu, Institut des Maladies de l'Appareil Digestif, France; and Centre de Recherche en Nutrition Humaine, Nantes, France
| | - Julien Chevalier
- INSERM, U913, Nantes, France; Université Nantes, Nantes, France; CHU Nantes, Hôtel Dieu, Institut des Maladies de l'Appareil Digestif, France; and Centre de Recherche en Nutrition Humaine, Nantes, France
| | - Marie Boudaud
- INSERM, U913, Nantes, France; Université Nantes, Nantes, France; CHU Nantes, Hôtel Dieu, Institut des Maladies de l'Appareil Digestif, France; and Centre de Recherche en Nutrition Humaine, Nantes, France
| | - Laetitia Kermarrec
- INSERM, U913, Nantes, France; Université Nantes, Nantes, France; CHU Nantes, Hôtel Dieu, Institut des Maladies de l'Appareil Digestif, France; and Centre de Recherche en Nutrition Humaine, Nantes, France
| | - Philippe Aubert
- INSERM, U913, Nantes, France; Université Nantes, Nantes, France; CHU Nantes, Hôtel Dieu, Institut des Maladies de l'Appareil Digestif, France; and Centre de Recherche en Nutrition Humaine, Nantes, France
| | - Isabelle Neveu
- INSERM, U913, Nantes, France; Université Nantes, Nantes, France; CHU Nantes, Hôtel Dieu, Institut des Maladies de l'Appareil Digestif, France; and Centre de Recherche en Nutrition Humaine, Nantes, France
| | - Philippe Naveilhan
- INSERM, U913, Nantes, France; Université Nantes, Nantes, France; CHU Nantes, Hôtel Dieu, Institut des Maladies de l'Appareil Digestif, France; and Centre de Recherche en Nutrition Humaine, Nantes, France
| | - Michel Neunlist
- INSERM, U913, Nantes, France; Université Nantes, Nantes, France; CHU Nantes, Hôtel Dieu, Institut des Maladies de l'Appareil Digestif, France; and Centre de Recherche en Nutrition Humaine, Nantes, France
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506
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Kang HR, Choi HG, Jeon CK, Lim SJ, Kim SH. Butyrate-mediated acquisition of chemoresistance by human colon cancer cells. Oncol Rep 2016; 36:1119-26. [PMID: 27277338 DOI: 10.3892/or.2016.4838] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Accepted: 05/10/2016] [Indexed: 11/05/2022] Open
Abstract
Butyrate is a short-chain fatty acid produced by the intestinal microflora and it not only induces apoptosis but also inhibits the proliferation of cancer cells. Recently, it has been reported that butyrate may cause resistance in colon cancer cells. Therefore, we investigated the effects of increased resistance to butyrate in HCT116 colon cancer cells. We established HCT116 cells resistant to butyrate (HCT116/BR) by treating HCT116 parental cells (HCT116/PT) with increasing concentrations of butyrate to a maximum of 1.6 mM for 3 months. The butyrate concentrations that inhibited cell growth by 50% (IC50) were 0.508 and 5.50 mM in HCT116/PT and HCT116/BR cells. The values after treatment with paclitaxel, 5-fluorouracil (5-FU), doxorubicin and trichostatin A (TSA) were 2.42, 2.36, 4.31 and 11.3-fold higher, respectively, in HCT116/BR cells compared with HCT116/PT cells. The protein expression of drug efflux pumps, such as P-glycoprotein (P-gp), breast cancer-resistant protein (BCRP) and the multidrug resistance associated protein 1 (MRP1), did not differ between HCT116/PT and HCT116/BR cells. The expression level of the anti-apoptotic Bcl-xL protein was increased while those of pro-apoptotic Bax and Bim proteins were reduced in HCT116/BR cells. There were no significant differences in cell motility and invasion. This study suggests that exposure of colon cancer cells to butyrate results in development of resistance to butyrate, which may play a role in the acquisition of chemoresistance in colon cancer.
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Affiliation(s)
- Hyang Ri Kang
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology, Ajou University, Suwon, Republic of Korea
| | - Hyeon Gyeom Choi
- College of Natural Sciences, Hannam University, Daejeon, Republic of Korea
| | | | - Soo-Jeong Lim
- Department of Bioscience and Biotechnology, Sejong University, Seoul, Republic of Korea
| | - So Hee Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology, Ajou University, Suwon, Republic of Korea
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507
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Fernando MR, Saxena A, Reyes JL, McKay DM. Butyrate enhances antibacterial effects while suppressing other features of alternative activation in IL-4-induced macrophages. Am J Physiol Gastrointest Liver Physiol 2016; 310:G822-31. [PMID: 27012776 DOI: 10.1152/ajpgi.00440.2015] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 03/11/2016] [Indexed: 01/31/2023]
Abstract
The short-chain fatty acid butyrate is produced by fermentation of dietary fiber by the intestinal microbiota; butyrate is the primary energy source of colonocytes and has immunomodulatory effects. Having shown that macrophages differentiated with IL-4 [M(IL-4)s] can suppress colitis, we hypothesized that butyrate would reinforce an M(IL-4) phenotype. Here, we show that in the presence of butyrate M(IL-4)s display reduced expression of their hallmark markers Arg1 and Ym1 and significantly suppressed LPS-induced nitric oxide, IL-12p40, and IL-10 production. Butyrate treatment likely altered the M(IL-4) phenotype via inhibition of histone deacetylation. Functionally, M(IL-4)s treated with butyrate showed increased phagocytosis and killing of bacteria, compared with M(IL-4) and this was not accompanied by enhanced proinflammatory cytokine production. Culture of regulatory T cells with M(IL-4)s and M(IL-4 + butyrate)s revealed that both macrophage subsets suppressed expression of the regulatory T-cell marker Foxp3. However, Tregs cocultured with M(IL-4 + butyrate) produced less IL-17A than Tregs cocultured with M(IL-4). These data illustrate the importance of butyrate, a microbial-derived metabolite, in the regulation of gut immunity: the demonstration that butyrate promotes phagocytosis in M(IL-4)s that can limit T-cell production of IL-17A reveals novel aspects of bacterial-host interaction in the regulation of intestinal homeostasis.
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Affiliation(s)
- Maria R Fernando
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Joan and Phoebe Snyder Institute for Chronic Disease, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Alpana Saxena
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Joan and Phoebe Snyder Institute for Chronic Disease, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - José-Luis Reyes
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Joan and Phoebe Snyder Institute for Chronic Disease, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Derek M McKay
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Joan and Phoebe Snyder Institute for Chronic Disease, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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508
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Regulation of immune cell function by short-chain fatty acids. Clin Transl Immunology 2016; 5:e73. [PMID: 27195116 PMCID: PMC4855267 DOI: 10.1038/cti.2016.17] [Citation(s) in RCA: 754] [Impact Index Per Article: 94.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 03/17/2016] [Accepted: 03/18/2016] [Indexed: 02/07/2023] Open
Abstract
Short-chain fatty acids (SCFAs) are bacterial fermentation products, which are chemically composed by a carboxylic acid moiety and a small hydrocarbon chain. Among them, acetic, propionic and butyric acids are the most studied, presenting, respectively, two, three and four carbons in their chemical structure. These metabolites are found in high concentrations in the intestinal tract, from where they are uptaken by intestinal epithelial cells (IECs). The SCFAs are partially used as a source of ATP by these cells. In addition, these molecules act as a link between the microbiota and the immune system by modulating different aspects of IECs and leukocytes development, survival and function through activation of G protein coupled receptors (FFAR2, FFAR3, GPR109a and Olfr78) and by modulation of the activity of enzymes and transcription factors including the histone acetyltransferase and deacetylase and the hypoxia-inducible factor. Considering that, it is not a surprise, the fact that these molecules and/or their targets are suggested to have an important role in the maintenance of intestinal homeostasis and that changes in components of this system are associated with pathological conditions including inflammatory bowel disease, obesity and others. The aim of this review is to present a clear and updated description of the effects of the SCFAs derived from bacteria on host immune system, as well as the molecular mechanisms involved on them.
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509
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Zhang LS, Davies SS. Microbial metabolism of dietary components to bioactive metabolites: opportunities for new therapeutic interventions. Genome Med 2016; 8:46. [PMID: 27102537 PMCID: PMC4840492 DOI: 10.1186/s13073-016-0296-x] [Citation(s) in RCA: 334] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Mass spectrometry- and nuclear magnetic resonance-based metabolomic studies comparing diseased versus healthy individuals have shown that microbial metabolites are often the compounds most markedly altered in the disease state. Recent studies suggest that several of these metabolites that derive from microbial transformation of dietary components have significant effects on physiological processes such as gut and immune homeostasis, energy metabolism, vascular function, and neurological behavior. Here, we review several of the most intriguing diet-dependent metabolites that may impact host physiology and may therefore be appropriate targets for therapeutic interventions, such as short-chain fatty acids, trimethylamine N-oxide, tryptophan and tyrosine derivatives, and oxidized fatty acids. Such interventions will require modulating either bacterial species or the bacterial biosynthetic enzymes required to produce these metabolites, so we briefly describe the current understanding of the bacterial and enzymatic pathways involved in their biosynthesis and summarize their molecular mechanisms of action. We then discuss in more detail the impact of these metabolites on health and disease, and review current strategies to modulate levels of these metabolites to promote human health. We also suggest future studies that are needed to realize the full therapeutic potential of targeting the gut microbiota.
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Affiliation(s)
- Linda S Zhang
- Division of Clinical Pharmacology, Vanderbilt University, Nashville, TN, 37232, USA
| | - Sean S Davies
- Division of Clinical Pharmacology, Vanderbilt University, Nashville, TN, 37232, USA. .,Department of Pharmacology, Vanderbilt University, Nashville, TN, 37232, USA. .,Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN, 37232, USA.
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510
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Abstract
The search for a connection between diet and human cancer has a long history in cancer research, as has interest in the mechanisms by which dietary factors might increase or decrease cancer risk. The realization that altering diet can alter the epigenetic state of genes and that these epigenetic alterations might increase or decrease cancer risk is a more modern notion, driven largely by studies in animal models. The connections between diet and epigenetic alterations, on the one hand, and between epigenetic alterations and cancer, on the other, are supported by both observational studies in humans as well as animal models. However, the conclusion that diet is linked directly to epigenetic alterations and that these epigenetic alterations directly increase or decrease the risk of human cancer is much less certain. We suggest that true and measurable effects of diet or dietary supplements on epigenotype and cancer risk are most likely to be observed in longitudinal studies and at the extremes of the intersection of dietary risk factors and human population variability. Careful analysis of such outlier populations is most likely to shed light on the molecular mechanisms by which suspected environmental risk factors drive the process of carcinogenesis.
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Affiliation(s)
- Carmen Sapienza
- Fels Institute for Cancer Research and Molecular Biology and Department of Pathology and Laboratory Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania 19140;
| | - Jean-Pierre Issa
- Department of Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania 19140;
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511
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Hofmanová J, Slavík J, Ovesná P, Tylichová Z, Vondráček J, Straková N, Vaculová AH, Ciganek M, Kozubík A, Knopfová L, Šmarda J, Machala M. Dietary fatty acids specifically modulate phospholipid pattern in colon cells with distinct differentiation capacities. Eur J Nutr 2016; 56:1493-1508. [PMID: 26983609 DOI: 10.1007/s00394-016-1196-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 02/25/2016] [Indexed: 02/06/2023]
Abstract
PURPOSE Although beneficial effects of the dietary n-3 docosahexaenoic acid (DHA) or butyrate in colon carcinogenesis have been implicated, the mechanisms of their action are not fully clear. Here, we investigated modulations of composition of individual phospholipid (PL) classes, with a particular emphasis on cardiolipins (CLs), in colon cells treated with DHA, sodium butyrate (NaBt), or their combination (DHA/NaBt), and we evaluated possible associations between lipid changes and cell fate after fatty acid treatment. METHODS In two distinct human colon cell models, foetal colon (FHC) and adenocarcinoma (HCT-116) cells, we compared patterns and composition of individual PL classes following the fatty acid treatment by HPLC-MS/MS. In parallel, we measured the parameters reflecting cell proliferation, differentiation and death. RESULTS In FHC cells, NaBt induced primarily differentiation, while co-treatment with DHA shifted their response towards cell death. In contrast, NaBt induced apoptosis in HCT-116 cells, which was not further affected by DHA. DHA was incorporated in all main PL types, increasing their unsaturation, while NaBt did not additionally modulate these effects in either cell model. Nevertheless, we identified an unusually wide range of CL species to be highly increased by NaBt and particularly by DHA/NaBt, and these effects were more pronounced in HCT-116 cells. DHA and DHA/NaBt enhanced levels of high molecular weight and more unsaturated CL species, containing DHA, which was specific for either differentiation or apoptotic responses. CONCLUSIONS We identified a wide range of CL species in the colon cells which composition was significantly modified after DHA and NaBt treatment. These specific CL modulations might contribute to distinct cellular differentiation or apoptotic responses.
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Affiliation(s)
- Jiřina Hofmanová
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
| | - Josef Slavík
- Veterinary Research Institute, v.v.i., Brno, Czech Republic
| | - Petra Ovesná
- Institute of Biostatistics and Analyses, Masaryk University, Brno, Czech Republic
| | - Zuzana Tylichová
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic.,Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jan Vondráček
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
| | - Nicol Straková
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
| | - Alena Hyršlová Vaculová
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
| | | | - Alois Kozubík
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic.,Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Lucie Knopfová
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jan Šmarda
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
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512
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Sahebekhtiari N, Thomsen MM, Sloth JJ, Stenbroen V, Zeviani M, Gregersen N, Viscomi C, Palmfeldt J. Quantitative proteomics suggests metabolic reprogramming during ETHE1 deficiency. Proteomics 2016; 16:1166-76. [PMID: 26867521 DOI: 10.1002/pmic.201500336] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 01/22/2016] [Accepted: 02/08/2016] [Indexed: 11/11/2022]
Abstract
Deficiency of mitochondrial sulfur dioxygenase (ETHE1) causes the severe metabolic disorder ethylmalonic encephalopathy, which is characterized by early-onset encephalopathy and defective cytochrome C oxidase because of hydrogen sulfide accumulation. Although the severe systemic consequences of the disorder are becoming clear, the molecular effects are not well defined. Therefore, for further elucidating the effects of ETHE1-deficiency, we performed a large scale quantitative proteomics study on liver tissue from ETHE1-deficient mice. Our results demonstrated a clear link between ETHE1-deficiency and redox active proteins, as reflected by downregulation of several proteins related to oxidation-reduction, such as different dehydrogenases and cytochrome P450 (CYP450) members. Furthermore, the protein data indicated impact of the ETHE1-deficiency on metabolic reprogramming through upregulation of glycolytic enzymes and by altering several heterogeneous ribonucleoproteins, indicating novel link between ETHE1 and gene expression regulation. We also found increase in total protein acetylation level, pointing out the link between ETHE1 and acetylation, which is likely controlled by both redox state and cellular metabolites. These findings are relevant for understanding the complexity of the disease and may shed light on important functions influenced by ETHE1 deficiency and by the concomitant increase in the gaseous mediator hydrogen sulfide. All MS data have been deposited in the ProteomeXchange with the dataset identifiers PXD002741 (http://proteomecentral.proteomexchange.org/dataset/PXD002741) and PXD002742 (http://proteomecentral.proteomexchange.org/dataset/PXD002741).
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Affiliation(s)
- Navid Sahebekhtiari
- Research Unit for Molecular Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
| | - Michelle M Thomsen
- Research Unit for Molecular Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
| | - Jens J Sloth
- Research Group for NanoBio Science, National Food Institute, Technical University of Denmark, Søborg, Denmark
| | - Vibeke Stenbroen
- Research Unit for Molecular Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
| | - Massimo Zeviani
- Mitochondrial Biology Unit, Medical Research Council, Wellcome Trust/MRC Building, Cambridge, UK
| | - Niels Gregersen
- Research Unit for Molecular Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
| | - Carlo Viscomi
- Mitochondrial Biology Unit, Medical Research Council, Wellcome Trust/MRC Building, Cambridge, UK.,IRCCS Foundation Neurological Institute "C. Besta,", Milano, Italy
| | - Johan Palmfeldt
- Research Unit for Molecular Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
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513
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Abstract
The formation of SCFA is the result of a complex interplay between diet and the gut microbiota within the gut lumen environment. The discovery of receptors, across a range of cell and tissue types for which short chain fatty acids SCFA appear to be the natural ligands, has led to increased interest in SCFA as signaling molecules between the gut microbiota and the host. SCFA represent the major carbon flux from the diet through the gut microbiota to the host and evidence is emerging for a regulatory role of SCFA in local, intermediary and peripheral metabolism. However, a lack of well-designed and controlled human studies has hampered our understanding of the significance of SCFA in human metabolic health. This review aims to pull together recent findings on the role of SCFA in human metabolism to highlight the multi-faceted role of SCFA on different metabolic systems.
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Affiliation(s)
- Douglas J. Morrison
- Scottish Universities Environmental Research Centre, University of Glasgow, East Kilbride, Scotland
| | - Tom Preston
- Scottish Universities Environmental Research Centre, University of Glasgow, East Kilbride, Scotland
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514
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Abstract
The formation of SCFA is the result of a complex interplay between diet and the gut microbiota within the gut lumen environment. The discovery of receptors, across a range of cell and tissue types for which short chain fatty acids SCFA appear to be the natural ligands, has led to increased interest in SCFA as signaling molecules between the gut microbiota and the host. SCFA represent the major carbon flux from the diet through the gut microbiota to the host and evidence is emerging for a regulatory role of SCFA in local, intermediary and peripheral metabolism. However, a lack of well-designed and controlled human studies has hampered our understanding of the significance of SCFA in human metabolic health. This review aims to pull together recent findings on the role of SCFA in human metabolism to highlight the multi-faceted role of SCFA on different metabolic systems.
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Affiliation(s)
- Douglas J. Morrison
- Scottish Universities Environmental Research Centre, University of Glasgow, East Kilbride, Scotland
| | - Tom Preston
- Scottish Universities Environmental Research Centre, University of Glasgow, East Kilbride, Scotland
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515
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Mismatch Repair and Colon Cancer: Mechanisms and Therapies Explored. Trends Mol Med 2016; 22:274-289. [PMID: 26970951 DOI: 10.1016/j.molmed.2016.02.003] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 02/16/2016] [Accepted: 02/17/2016] [Indexed: 02/06/2023]
Abstract
Colorectal cancer (CRC) remains one of the most prevalent cancers worldwide. In sporadic CRC, mutations frequently occur in the DNA mismatch repair (MMR) pathway. In addition, germline MMR mutations have been linked to Lynch syndrome, the most common form of hereditary CRC. Although genetic mutations, diet, inflammation, and the gut microbiota can influence CRC, it is unclear how MMR deficiency relates to these factors to modulate disease. In this review, the association of MMR to the etiology of CRC is examined, particularly in the context of microRNAs (miRNAs), inflammation, and the microbiome. We also discuss the most current targeted therapies, methods of prevention, and molecular biomarkers against MMR-deficient CRC, all of which are encouraging advancements in the field.
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516
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Irwin MH, Moos WH, Faller DV, Steliou K, Pinkert CA. Epigenetic Treatment of Neurodegenerative Disorders: Alzheimer and Parkinson Diseases. Drug Dev Res 2016; 77:109-23. [PMID: 26899010 DOI: 10.1002/ddr.21294] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Preclinical Research In this review, we discuss epigenetic-driven methods for treating neurodegenerative disorders associated with mitochondrial dysfunction, focusing on carnitinoid antioxidant-histone deacetylase inhibitors that show an ability to reinvigorate synaptic plasticity and protect against neuromotor decline in vivo. Aging remains a major risk factor in patients who progress to dementia, a clinical syndrome typified by decreased mental capacity, including impairments in memory, language skills, and executive function. Energy metabolism and mitochondrial dysfunction are viewed as determinants in the aging process that may afford therapeutic targets for a host of disease conditions, the brain being primary in such thinking. Mitochondrial dysfunction is a core feature in the pathophysiology of both Alzheimer and Parkinson diseases and rare mitochondrial diseases. The potential of new therapies in this area extends to glaucoma and other ophthalmic disorders, migraine, Creutzfeldt-Jakob disease, post-traumatic stress disorder, systemic exertion intolerance disease, and chemotherapy-induced cognitive impairment. An emerging and hopefully more promising approach to addressing these hard-to-treat diseases leverages their sensitivity to activation of master regulators of antioxidant and cytoprotective genes, antioxidant response elements, and mitophagy. Drug Dev Res 77 : 109-123, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Michael H Irwin
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Walter H Moos
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of California San Francisco, San Francisco, CA, USA.,SRI Biosciences, A Division of SRI International, Menlo Park, CA, USA
| | - Douglas V Faller
- Cancer Research Center, Boston University School of Medicine, Boston, MA, USA
| | - Kosta Steliou
- Cancer Research Center, Boston University School of Medicine, Boston, MA, USA.,PhenoMatriX, Inc., Boston, MA, USA
| | - Carl A Pinkert
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA.,Department of Biological Sciences, College of Arts and Sciences, The University of Alabama, Tuscaloosa, AL, USA
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517
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Moos WH, Maneta E, Pinkert CA, Irwin MH, Hoffman ME, Faller DV, Steliou K. Epigenetic Treatment of Neuropsychiatric Disorders: Autism and Schizophrenia. Drug Dev Res 2016; 77:53-72. [PMID: 26899191 DOI: 10.1002/ddr.21295] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Neuropsychiatric disorders are a heterogeneous group of conditions that often share underlying mitochondrial dysfunction and biological pathways implicated in their pathogenesis, progression, and treatment. To date, these disorders have proven notoriously resistant to molecular-targeted therapies, and clinical options are relegated to interventional types, which do not address the core symptoms of the disease. In this review, we discuss emerging epigenetic-driven approaches using novel acylcarnitine esters (carnitinoids) that act on master regulators of antioxidant and cytoprotective genes and mitophagic pathways. These carnitinoids are actively transported, mitochondria-localizing, biomimetic coenzyme A surrogates of short-chain fatty acids, which inhibit histone deacetylase and may reinvigorate synaptic plasticity and protect against neuronal damage. We outline these neuroprotective effects in the context of treatment of neuropsychiatric disorders such as autism spectrum disorder and schizophrenia.
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Affiliation(s)
- Walter H Moos
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of California San Francisco, San Francisco, CA, USA.,SRI Biosciences, A Division of SRI International, Menlo Park, CA, USA
| | - Eleni Maneta
- Department of Psychiatry, Boston Children's Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Carl A Pinkert
- Department of Biological Sciences, College of Arts and Sciences, The University of Alabama, Tuscaloosa, AL, USA.,Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Michael H Irwin
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Michelle E Hoffman
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Douglas V Faller
- Cancer Research Center, Boston University School of Medicine, Boston, MA, USA
| | - Kosta Steliou
- Cancer Research Center, Boston University School of Medicine, Boston, MA, USA.,PhenoMatriX, Inc., Boston, MA, USA
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518
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Bourassa MW, Alim I, Bultman SJ, Ratan RR. Butyrate, neuroepigenetics and the gut microbiome: Can a high fiber diet improve brain health? Neurosci Lett 2016; 625:56-63. [PMID: 26868600 DOI: 10.1016/j.neulet.2016.02.009] [Citation(s) in RCA: 360] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 02/01/2016] [Accepted: 02/04/2016] [Indexed: 12/14/2022]
Abstract
As interest in the gut microbiome has grown in recent years, attention has turned to the impact of our diet on our brain. The benefits of a high fiber diet in the colon have been well documented in epidemiological studies, but its potential impact on the brain has largely been understudied. Here, we will review evidence that butyrate, a short-chain fatty acid (SCFA) produced by bacterial fermentation of fiber in the colon, can improve brain health. Butyrate has been extensively studied as a histone deacetylase (HDAC) inhibitor but also functions as a ligand for a subset of G protein-coupled receptors and as an energy metabolite. These diverse modes of action make it well suited for solving the wide array of imbalances frequently encountered in neurological disorders. In this review, we will integrate evidence from the disparate fields of gastroenterology and neuroscience to hypothesize that the metabolism of a high fiber diet in the gut can alter gene expression in the brain to prevent neurodegeneration and promote regeneration.
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Affiliation(s)
- Megan W Bourassa
- Sperling Center for Hemorrhagic Stroke Recovery, Burke Medical Research Institute, 785 Mamaroneck Ave, White Plains, NY 10605, USA; Brain and Mind Research Institute, Weill Medical College of Cornell University, 1300 York Ave. Box 65, New York, NY 10065, USA
| | - Ishraq Alim
- Sperling Center for Hemorrhagic Stroke Recovery, Burke Medical Research Institute, 785 Mamaroneck Ave, White Plains, NY 10605, USA; Brain and Mind Research Institute, Weill Medical College of Cornell University, 1300 York Ave. Box 65, New York, NY 10065, USA
| | - Scott J Bultman
- Department of Genetics, University of North Carolina Genetic Medicine Building, Room 5060, 120 Mason Farm Road, Chapel Hill, NC 27599, USA
| | - Rajiv R Ratan
- Sperling Center for Hemorrhagic Stroke Recovery, Burke Medical Research Institute, 785 Mamaroneck Ave, White Plains, NY 10605, USA; Brain and Mind Research Institute, Weill Medical College of Cornell University, 1300 York Ave. Box 65, New York, NY 10065, USA.
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519
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Geamanu A, Gupta SV, Bauerfeld C, Samavati L. Metabolomics connects aberrant bioenergetic, transmethylation, and gut microbiota in sarcoidosis. Metabolomics 2016; 12:35. [PMID: 27489531 PMCID: PMC4960975 DOI: 10.1007/s11306-015-0932-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Sarcoidosis is a systemic granulomatous disease of unknown etiology. Granulomatous inflammation in sarcoidosis may affect multiple organs, including the lungs, skin, CNS, and the eyes, leading to severe morbidity and mortality. The underlying mechanisms for sustained inflammation in sarcoidosis are unknown. We hypothesized that metabolic changes play a critical role in perpetuation of inflammation in sarcoidosis. 1H nuclear magnetic resonance (NMR)-based untargeted metabolomic analysis was used to identify circulating molecules in serum to discriminate sarcoidosis patients from healthy controls. Principal component analyses (PCA) were performed to identify different metabolic markers and explore the changes of associated biochemical pathways. Using Chenomx 7.6 NMR Suite software, we identified and quantified metabolites responsible for such separation in the PCA models. Quantitative analysis showed that the levels of metabolites, such as 3-hydroxybutyrate, acetoacetate, carnitine, cystine, homocysteine, pyruvate, and trimethylamine N-oxide were significantly increased in sarcoidosis patients. Interestingly, succinate, a major intermediate metabolite involved in the tricyclic acid cycle was significantly decreased in sarcoidosis patients. Application of integrative pathway analyses identified deregulation of butanoate, ketone bodies, citric cycle metabolisms, and transmethylation. This may be used for development of new drugs or nutritional modification.
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Affiliation(s)
- Andreea Geamanu
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Wayne State University School of Medicine and Detroit Medical Center, 3990 John R., 3 Hudson, Detroit, MI 48201, USA
| | - Smiti V. Gupta
- Department of Nutrition and Food Science, Wayne State University, Detroit, MI 48201, USA
| | - Christian Bauerfeld
- Division of Pediatric Critical Care, Department of Pediatrics, Children’s Hospital of Michigan, Detroit, MI 48201, USA
| | - Lobelia Samavati
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Wayne State University School of Medicine and Detroit Medical Center, 3990 John R., 3 Hudson, Detroit, MI 48201, USA
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA
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520
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Zhang J, Yi M, Zha L, Chen S, Li Z, Li C, Gong M, Deng H, Chu X, Chen J, Zhang Z, Mao L, Sun S. Sodium Butyrate Induces Endoplasmic Reticulum Stress and Autophagy in Colorectal Cells: Implications for Apoptosis. PLoS One 2016; 11:e0147218. [PMID: 26784903 PMCID: PMC4718706 DOI: 10.1371/journal.pone.0147218] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 12/30/2015] [Indexed: 12/13/2022] Open
Abstract
PURPOSE Butyrate, a short-chain fatty acid derived from dietary fiber, inhibits proliferation and induces cell death in colorectal cancer cells. However, clinical trials have shown mixed results regarding the anti-tumor activities of butyrate. We have previously shown that sodium butyrate increases endoplasmic reticulum stress by altering intracellular calcium levels, a well-known autophagy trigger. Here, we investigated whether sodium butyrate-induced endoplasmic reticulum stress mediated autophagy, and whether there was crosstalk between autophagy and the sodium butyrate-induced apoptotic response in human colorectal cancer cells. METHODS Human colorectal cancer cell lines (HCT-116 and HT-29) were treated with sodium butyrate at concentrations ranging from 0.5-5mM. Cell proliferation was assessed using MTT tetrazolium salt formation. Autophagy induction was confirmed through a combination of Western blotting for associated proteins, acridine orange staining for acidic vesicles, detection of autolysosomes (MDC staining), and electron microscopy. Apoptosis was quantified by flow cytometry using standard annexinV/propidium iodide staining and by assessing PARP-1 cleavage by Western blot. RESULTS Sodium butyrate suppressed colorectal cancer cell proliferation, induced autophagy, and resulted in apoptotic cell death. The induction of autophagy was supported by the accumulation of acidic vesicular organelles and autolysosomes, and the expression of autophagy-associated proteins, including microtubule-associated protein II light chain 3 (LC3-II), beclin-1, and autophagocytosis-associated protein (Atg)3. The autophagy inhibitors 3-methyladenine (3-MA) and chloroquine inhibited sodium butyrate induced autophagy. Furthermore, sodium butyrate treatment markedly enhanced the expression of endoplasmic reticulum stress-associated proteins, including BIP, CHOP, PDI, and IRE-1a. When endoplasmic reticulum stress was inhibited by pharmacological (cycloheximide and mithramycin) and genetic (siRNA targeting BIP and CHOP) methods, the induction of BIP, PDI, IRE1a, and LC3-II was blocked, but PARP cleavage was markedly enhanced. DISCUSSION Taken together, these results suggested that sodium butyrate-induced autophagy was mediated by endoplasmic reticulum stress, and that preventing autophagy by blocking the endoplasmic reticulum stress response enhanced sodium butyrate-induced apoptosis. These results provide novel insights into the anti-tumor mechanisms of butyric acid.
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Affiliation(s)
- Jintao Zhang
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, Guangdong, P.R.China, 510515
| | - Man Yi
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, Guangdong, P.R.China, 510515
| | - Longying Zha
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, Guangdong, P.R.China, 510515
| | - Siqiang Chen
- Department of Certification Supervision, Guangdong Entry-Exit Inspection and Quarantine Bureau, Guojian Building, No.66, Huacheng Avenue, Zhujiang Xincheng, Guangzhou, Guangdong Province, P.R. China 510623
| | - Zhijia Li
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, Guangdong, P.R.China, 510515
| | - Cheng Li
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, Guangdong, P.R.China, 510515
| | - Mingxing Gong
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, Guangdong, P.R.China, 510515
| | - Hong Deng
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, Guangdong, P.R.China, 510515
| | - Xinwei Chu
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, Guangdong, P.R.China, 510515
| | - Jiehua Chen
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, Guangdong, P.R.China, 510515
| | - Zheqing Zhang
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, Guangdong, P.R.China, 510515
| | - Limei Mao
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, Guangdong, P.R.China, 510515
| | - Suxia Sun
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, Guangdong, P.R.China, 510515
- * E-mail:
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521
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Moos WH, Faller DV, Harpp DN, Kanara I, Pernokas J, Powers WR, Steliou K. Microbiota and Neurological Disorders: A Gut Feeling. Biores Open Access 2016; 5:137-45. [PMID: 27274912 PMCID: PMC4892191 DOI: 10.1089/biores.2016.0010] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
In the past century, noncommunicable diseases have surpassed infectious diseases as the principal cause of sickness and death, worldwide. Trillions of commensal microbes live in and on our body, and constitute the human microbiome. The vast majority of these microorganisms are maternally derived and live in the gut, where they perform functions essential to our health and survival, including: digesting food, activating certain drugs, producing short-chain fatty acids (which help to modulate gene expression by inhibiting the deacetylation of histone proteins), generating anti-inflammatory substances, and playing a fundamental role in the induction, training, and function of our immune system. Among the many roles the microbiome ultimately plays, it mitigates against untoward effects from our exposure to the environment by forming a biotic shield between us and the outside world. The importance of physical activity coupled with a balanced and healthy diet in the maintenance of our well-being has been recognized since antiquity. However, it is only recently that characterization of the host-microbiome intermetabolic and crosstalk pathways has come to the forefront in studying therapeutic design. As reviewed in this report, synthetic biology shows potential in developing microorganisms for correcting pathogenic dysbiosis (gut microbiota-host maladaptation), although this has yet to be proven. However, the development and use of small molecule drugs have a long and successful history in the clinic, with small molecule histone deacetylase inhibitors representing one relevant example already approved to treat cancer and other disorders. Moreover, preclinical research suggests that epigenetic treatment of neurological conditions holds significant promise. With the mouth being an extension of the digestive tract, it presents a readily accessible diagnostic site for the early detection of potential unhealthy pathogens resident in the gut. Taken together, the data outlined herein provide an encouraging roadmap toward important new medicines and companion diagnostic platforms in a wide range of therapeutic indications.
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Affiliation(s)
- Walter H. Moos
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of California San Francisco, San Francisco, California
- Address correspondence to: Walter H. Moos, PhD, Department of Pharmaceutical Chemistry, School of Pharmacy, University of California San Francisco, 600 16th Street, Mail Code 2280, Genentech Hall S512D, Mission Bay Campus, San Francisco, CA 94158, E-mail: , ; or Kosta Steliou, PhD, PhenoMatriX, Inc., 9 Hawthorne Place Suite 4R, Boston, MA 02114, E-mail: ,
| | - Douglas V. Faller
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
- Cancer Research Center, Boston University School of Medicine, Boston, Massachusetts
| | - David N. Harpp
- Department of Chemistry, McGill University, Montreal, Canada
| | - Iphigenia Kanara
- Weatherhead Center for International Affairs, Harvard University, Cambridge, Massachusetts
- Consulate General of Greece in Boston, Boston, Massachusetts
| | - Julie Pernokas
- Advanced Dental Associates of New England, Woburn, Massachusetts
| | - Whitney R. Powers
- Department of Health Sciences, Boston University, Boston, Massachusetts
- Department of Anatomy, Boston University School of Medicine, Boston, Massachusetts
| | - Kosta Steliou
- Cancer Research Center, Boston University School of Medicine, Boston, Massachusetts
- PhenoMatriX, Inc., Boston, Massachusetts
- Address correspondence to: Walter H. Moos, PhD, Department of Pharmaceutical Chemistry, School of Pharmacy, University of California San Francisco, 600 16th Street, Mail Code 2280, Genentech Hall S512D, Mission Bay Campus, San Francisco, CA 94158, E-mail: , ; or Kosta Steliou, PhD, PhenoMatriX, Inc., 9 Hawthorne Place Suite 4R, Boston, MA 02114, E-mail: ,
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522
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Han A, Bennett N, MacDonald A, Johnstone M, Whelan J, Donohoe DR. Cellular Metabolism and Dose Reveal Carnitine-Dependent and -Independent Mechanisms of Butyrate Oxidation in Colorectal Cancer Cells. J Cell Physiol 2015; 231:1804-13. [DOI: 10.1002/jcp.25287] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 12/09/2015] [Indexed: 12/14/2022]
Affiliation(s)
- Anna Han
- Department of Nutrition; University of Tennessee; Knoxville Tennessee
| | - Natalie Bennett
- Department of Nutrition; University of Tennessee; Knoxville Tennessee
| | - Amber MacDonald
- Department of Nutrition; University of Tennessee; Knoxville Tennessee
| | - Megan Johnstone
- Department of Nutrition; University of Tennessee; Knoxville Tennessee
| | - Jay Whelan
- Department of Nutrition; University of Tennessee; Knoxville Tennessee
| | - Dallas R. Donohoe
- Department of Nutrition; University of Tennessee; Knoxville Tennessee
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523
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Su X, Wellen KE, Rabinowitz JD. Metabolic control of methylation and acetylation. Curr Opin Chem Biol 2015; 30:52-60. [PMID: 26629854 DOI: 10.1016/j.cbpa.2015.10.030] [Citation(s) in RCA: 196] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 10/28/2015] [Indexed: 12/11/2022]
Abstract
Methylation and acetylation of DNA and histone proteins are the chemical basis for epigenetics. From bacteria to humans, methylation and acetylation are sensitive to cellular metabolic status. Modification rates depend on the availability of one-carbon and two-carbon substrates (S-adenosylmethionine, acetyl-CoA, and in bacteria also acetyl-phosphate). In addition, they are sensitive to demodification enzyme cofactors (α-ketoglutarate, NAD(+)) and structural analog metabolites that function as epigenetic enzyme inhibitors (e.g., S-adenosylhomocysteine, 2-hydroxyglutarate). Methylation and acetylation likely initially evolved to tailor protein activities in microbes to their metabolic milieu. While the extracellular environment of mammals is more tightly controlled, the combined impact of nutrient abundance and metabolic enzyme expression impacts epigenetics in mammals sufficiently to drive important biological outcomes such as stem cell fate and cancer.
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Affiliation(s)
- Xiaoyang Su
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA; Department of Chemistry, Princeton University, Princeton, NJ 08544, USA
| | - Kathryn E Wellen
- Department of Cancer Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA; Abramson Family Cancer Research Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Joshua D Rabinowitz
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA; Department of Chemistry, Princeton University, Princeton, NJ 08544, USA.
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524
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Cueno ME, Ochiai K. Re-discovering periodontal butyric acid: New insights on an old metabolite. Microb Pathog 2015; 94:48-53. [PMID: 26466516 DOI: 10.1016/j.micpath.2015.10.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 10/05/2015] [Accepted: 10/06/2015] [Indexed: 02/02/2023]
Abstract
The oral microbiome is composed of detrimental and beneficial microbial communities producing several microbial factors that could contribute to the development of the oral microbiome and, likewise, may lead to the development of host diseases. Metabolites, like short-chain fatty acids, are commonly produced by the oral microbiome and serve various functions. Among the periodontal short-chain fatty acids, butyric acid is mainly produced by periodontopathic bacteria and, attributable to the butyrate paradox, is postulated to exhibit a dual function depending on butyric acid concentration. A better understanding of the interconnecting networks that would influence butyric acid function in the oral cavity may shed a new light on the current existing knowledge and view regarding butyric acid.
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Affiliation(s)
- Marni E Cueno
- Department of Microbiology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan.
| | - Kuniyasu Ochiai
- Department of Microbiology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan.
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525
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Cipe G, Idiz UO, Firat D, Bektasoglu H. Relationship between intestinal microbiota and colorectal cancer. World J Gastrointest Oncol 2015; 7:233-240. [PMID: 26483877 PMCID: PMC4606177 DOI: 10.4251/wjgo.v7.i10.233] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 08/02/2015] [Accepted: 09/08/2015] [Indexed: 02/05/2023] Open
Abstract
The human gastrointestinal tract hosts a complex and vast microbial community with up to 1011-1012 microorganisms colonizing the colon. The gut microbiota has a serious effect on homeostasis and pathogenesis through a number of mechanisms. In recent years, the relationship between the intestinal microbiota and sporadic colorectal cancer has attracted much scientific interest. Mechanisms underlying colonic carcinogenesis include the conversion of procarcinogenic diet-related factors to carcinogens and the stimulation of procarcinogenic signaling pathways in luminal epithelial cells. Understanding each of these mechanisms will facilitate future studies, leading to the development of novel strategies for the diagnosis, treatment, and prevention of colorectal cancer. In this review, we discuss the relationship between colorectal cancer and the intestinal microbiota.
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526
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Lempradl A, Pospisilik JA, Penninger JM. Exploring the emerging complexity in transcriptional regulation of energy homeostasis. Nat Rev Genet 2015; 16:665-81. [PMID: 26460345 DOI: 10.1038/nrg3941] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Obesity and its associated diseases are expected to affect more than 1 billion people by the year 2030. These figures have sparked intensive research into the molecular control of food intake, nutrient distribution, storage and metabolism--processes that are collectively termed energy homeostasis. Recent decades have also seen dramatic developments in our understanding of gene regulation at the signalling, chromatin and post-transcriptional levels. The seemingly exponential growth in this complexity now poses a major challenge for translational researchers in need of simplified but accurate paradigms for clinical use. In this Review, we consider the current understanding of transcriptional control of energy homeostasis, including both transcriptional and epigenetic regulators, and crosstalk between pathways. We also provide insights into emerging developments and challenges in this field.
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Affiliation(s)
- Adelheid Lempradl
- Max Planck Institute of Immunobiology and Epigenetics, Stuebeweg 51, 79108 Freiburg, Germany
| | - J Andrew Pospisilik
- Max Planck Institute of Immunobiology and Epigenetics, Stuebeweg 51, 79108 Freiburg, Germany
| | - Josef M Penninger
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Dr Bohr-Gasse 3, 1030 Vienna, Austria
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527
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Asarat M, Vasiljevic T, Apostolopoulos V, Donkor O. Short-Chain Fatty Acids Regulate Secretion of IL-8 from Human Intestinal Epithelial Cell Linesin vitro. Immunol Invest 2015; 44:678-93. [DOI: 10.3109/08820139.2015.1085389] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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528
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Cluntun AA, Huang H, Dai L, Liu X, Zhao Y, Locasale JW. The rate of glycolysis quantitatively mediates specific histone acetylation sites. Cancer Metab 2015; 3:10. [PMID: 26401273 PMCID: PMC4579576 DOI: 10.1186/s40170-015-0135-3] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 08/28/2015] [Indexed: 01/01/2023] Open
Abstract
Background Glucose metabolism links metabolic status to protein acetylation. However, it remains poorly understood to what extent do features of glucose metabolism contribute to protein acetylation and whether the process can be dynamically and quantitatively regulated by differing rates of glycolysis. Results Here, we show that titratable rates of glycolysis with corresponding changes in the levels of glycolytic intermediates result in a graded remodeling of a bulk of the metabolome and resulted in gradual changes in total histone acetylation levels. Dynamic histone acetylation levels were found and most strongly correlated with acetyl coenzyme A (ac-CoA) levels and inversely associated with the ratio of ac-CoA to free CoA. A multiplexed stable isotopic labeling by amino acids in cell culture (SILAC)-based proteomics approach revealed that the levels of half of identified histone acetylation sites as well as other lysine acylation modifications are tuned by the rate of glycolysis demonstrating that glycolytic rate affects specific acylation sites. Conclusions We demonstrate that histone acylation is directly sensed by glucose flux in a titratable, dose-dependent manner that is modulated by glycolytic flux and that a possible function of the Warburg Effect, a metabolic state observed in cancers with enhanced glucose metabolism, is to confer specific signaling effects on cells.
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Affiliation(s)
- Ahmad A Cluntun
- Graduate Field of Biochemistry, Molecular Cell Biology, Cornell University, Ithaca, NY USA ; King Abdullah International Medical Research Center (KAIMRC), Riyadh, Saudi Arabia
| | - He Huang
- Ben May Department of Cancer Research, The University of Chicago, Chicago, IL USA
| | - Lunzhi Dai
- King Abdullah International Medical Research Center (KAIMRC), Riyadh, Saudi Arabia
| | - Xiaojing Liu
- Division of Nutritional Sciences, Cornell University, Ithaca, NY USA
| | - Yingming Zhao
- King Abdullah International Medical Research Center (KAIMRC), Riyadh, Saudi Arabia
| | - Jason W Locasale
- Graduate Field of Biochemistry, Molecular Cell Biology, Cornell University, Ithaca, NY USA ; Division of Nutritional Sciences, Cornell University, Ithaca, NY USA ; Department of Pharmacology and Cancer Biology, Duke University Medical School, Durham, NC USA ; Duke Cancer Institute, Duke University Medical School, Durham, NC USA ; Duke Molecular Physiology Institute, Duke University Medical School, Durham, NC USA
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529
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Abstract
It is becoming increasingly clear that microbiota inhabiting our bodies influence cancer predisposition and etiology. In addition to pathogens with oncogenic properties, commensal and symbiotic microbiota have tumor-suppressive properties. Diet and other environmental factors can modulate the abundance of certain members of microbial communities within the gastrointestinal tract and at other anatomical sites. Furthermore, some dietary factors are metabolized by commensal/symbiotic gut microbiota into bioactive food components believed to prevent cancer. For example, dietary fiber undergoes bacterial fermentation in the colon to yield butyrate, which is a short-chain fatty acid and histone deacetylase (HDAC) inhibitor that suppresses the viability and growth of colorectal cancer cell lines. A recent study using gnotobiotic mouse models demonstrates that fiber can protect against colorectal tumorigenesis in a microbiota- and butyrate-dependent manner that involves the Warburg effect. This and other examples suggest that some of the inter-individual variation observed in epidemiology and intervention studies that have investigated associations between diet and cancer risk might be explained by differences in microbiota among the participants. Data from basic research studies also support the idea that probiotics and prebiotics could be plausible chemoprevention strategies that may be utilized to a greater extent in the future.
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Affiliation(s)
- Scott J Bultman
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA.
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530
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2015 4(th) TERMIS World Congress Boston, Massachusetts September 8-11, 2015. Tissue Eng Part A 2015; 21 Suppl 1:S1-S413. [PMID: 26317531 DOI: 10.1089/ten.tea.2015.5000.abstracts] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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531
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Hong MY, Turner ND, Murphy ME, Carroll RJ, Chapkin RS, Lupton JR. In vivo regulation of colonic cell proliferation, differentiation, apoptosis, and P27Kip1 by dietary fish oil and butyrate in rats. Cancer Prev Res (Phila) 2015; 8:1076-83. [PMID: 26323483 DOI: 10.1158/1940-6207.capr-15-0147] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 08/02/2015] [Indexed: 12/16/2022]
Abstract
We have shown that dietary fish oil is protective against experimentally induced colon cancer, and the protective effect is enhanced by coadministration of pectin. However, the underlying mechanisms have not been fully elucidated. We hypothesized that fish oil with butyrate, a pectin fermentation product, protects against colon cancer initiation by decreasing cell proliferation and increasing differentiation and apoptosis through a p27(Kip1)-mediated mechanism. Rats were provided diets of corn or fish oil, with/without butyrate, and terminated 12, 24, or 48 hours after azoxymethane (AOM) injection. Proliferation (Ki-67), differentiation (Dolichos Biflorus Agglutinin), apoptosis (TUNEL), and p27(Kip1) (cell-cycle mediator) were measured in the same cell within crypts in order to examine the coordination of cell cycle as a function of diet. DNA damage (N(7)-methylguanine) was determined by quantitative IHC analysis. Dietary fish oil decreased DNA damage by 19% (P = 0.001) and proliferation by 50% (P = 0.003) and increased differentiation by 56% (P = 0.039) compared with corn oil. When combined with butyrate, fish oil enhanced apoptosis 24 hours after AOM injection compared with a corn oil/butyrate diet (P = 0.039). There was an inverse relationship between crypt height and apoptosis in the fish oil/butyrate group (r = -0.53, P = 0.040). The corn oil/butyrate group showed a positive correlation between p27(Kip1) expression and proliferation (r = 0.61, P = 0.035). These results indicate the in vivo effect of butyrate on apoptosis and proliferation is dependent on dietary lipid source. These results demonstrate the presence of an early coordinated colonocyte response by which fish oil and butyrate protects against colon tumorigenesis.
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Affiliation(s)
- Mee Young Hong
- Department of Nutrition and Food Science, Texas A&M University, College Station, Texas. School of Food and Nutritional Sciences, San Diego State University, San Diego, California.
| | - Nancy D Turner
- Department of Nutrition and Food Science, Texas A&M University, College Station, Texas
| | - Mary E Murphy
- Deptartment of Statistics, Texas A&M University, College Station, Texas
| | - Raymond J Carroll
- Department of Nutrition and Food Science, Texas A&M University, College Station, Texas. Deptartment of Statistics, Texas A&M University, College Station, Texas
| | - Robert S Chapkin
- Department of Nutrition and Food Science, Texas A&M University, College Station, Texas
| | - Joanne R Lupton
- Department of Nutrition and Food Science, Texas A&M University, College Station, Texas
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532
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Encarnação JC, Abrantes AM, Pires AS, Botelho MF. Revisit dietary fiber on colorectal cancer: butyrate and its role on prevention and treatment. Cancer Metastasis Rev 2015. [DOI: 10.1007/s10555-015-9578-9] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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533
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Montgomery DC, Sorum AW, Guasch L, Nicklaus MC, Meier JL. Metabolic Regulation of Histone Acetyltransferases by Endogenous Acyl-CoA Cofactors. ACTA ACUST UNITED AC 2015; 22:1030-1039. [PMID: 26190825 DOI: 10.1016/j.chembiol.2015.06.015] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 06/04/2015] [Accepted: 06/05/2015] [Indexed: 10/23/2022]
Abstract
The finding that chromatin modifications are sensitive to changes in cellular cofactor levels potentially links altered tumor cell metabolism and gene expression. However, the specific enzymes and metabolites that connect these two processes remain obscure. Characterizing these metabolic-epigenetic axes is critical to understanding how metabolism supports signaling in cancer, and developing therapeutic strategies to disrupt this process. Here, we describe a chemical approach to define the metabolic regulation of lysine acetyltransferase (KAT) enzymes. Using a novel chemoproteomic probe, we identify a previously unreported interaction between palmitoyl coenzyme A (palmitoyl-CoA) and KAT enzymes. Further analysis reveals that palmitoyl-CoA is a potent inhibitor of KAT activity and that fatty acyl-CoA precursors reduce cellular histone acetylation levels. These studies implicate fatty acyl-CoAs as endogenous regulators of histone acetylation, and suggest novel strategies for the investigation and metabolic modulation of epigenetic signaling.
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Affiliation(s)
- David C Montgomery
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick MD, 21702, USA
| | - Alexander W Sorum
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick MD, 21702, USA
| | - Laura Guasch
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick MD, 21702, USA
| | - Marc C Nicklaus
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick MD, 21702, USA
| | - Jordan L Meier
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick MD, 21702, USA
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534
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Chiaradonna F, Cirulli C, Palorini R, Votta G, Alberghina L. New Insights into the Connection Between Histone Deacetylases, Cell Metabolism, and Cancer. Antioxid Redox Signal 2015; 23:30-50. [PMID: 24483782 DOI: 10.1089/ars.2014.5854] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
SIGNIFICANCE Histone deacetylases (HDACs) activity and cell metabolism are considered important targets for cancer therapy, as both are deregulated and associated with the onset and maintenance of tumors. RECENT ADVANCES Besides the classical function of HDACs as HDAC enzymes controlling the transcription, it is becoming increasingly evident that these proteins are involved in the regulation of several other cellular processes by their ability to deacetylate hundreds of proteins with different functions in both the cytoplasm and the nucleus. Importantly, recent high-throughput studies have identified as important target proteins several enzymes involved in different metabolic pathways. Conversely, it has been also shown that metabolic intermediates may control HDACs activity. Consequently, the acetylation/deacetylation of metabolic enzymes and the ability of metabolic intermediates to modulate HDACs may represent a cross-talk connecting cell metabolism, transcription, and other HDACs-controlled processes in physiological and pathological conditions. CRITICAL ISSUES Since metabolic alterations and HDACs deregulation are important cancer hallmarks, disclosing connections among them may improve our understanding on cancer mechanisms and reveal novel therapeutic protocols against this disease. FUTURE DIRECTIONS High-throughput metabolic studies performed by using more sophisticated technologies applied to the available models of conditional deletion of HDACs in cell lines or in mice will fill the gap in the current understanding and open directions for future research.
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Affiliation(s)
- Ferdinando Chiaradonna
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
| | - Claudia Cirulli
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
| | - Roberta Palorini
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
| | - Giuseppina Votta
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
| | - Lilia Alberghina
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
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535
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Huang Z, Cai L, Tu BP. Dietary control of chromatin. Curr Opin Cell Biol 2015; 34:69-74. [PMID: 26094239 DOI: 10.1016/j.ceb.2015.05.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 05/19/2015] [Accepted: 05/20/2015] [Indexed: 12/28/2022]
Abstract
Organisms must be able to rapidly alter gene expression in response to changes in their nutrient environment. This review summarizes evidence that epigenetic modifications of chromatin depend on particular metabolites of intermediary metabolism, enabling the facile regulation of gene expression in tune with metabolic state. Nutritional or dietary control of chromatin is an often-overlooked, yet fundamental regulatory mechanism directly linked to human physiology. Nutrient-sensitive epigenetic marks are dynamic, suggesting rapid turnover, and may have functions beyond the regulation of gene transcription, including pH regulation and as carbon sources in cancer cells.
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Affiliation(s)
- Zhiguang Huang
- Department of Biochemistry, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Ling Cai
- Children's Medical Center Research Institute, UT Southwestern Medical Center, 6000 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Benjamin P Tu
- Department of Biochemistry, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA.
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536
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The cytotoxicity of 3-bromopyruvate in breast cancer cells depends on extracellular pH. Biochem J 2015; 467:247-58. [PMID: 25641640 DOI: 10.1042/bj20140921] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Although the anti-cancer properties of 3BP (3-bromopyruvate) have been described previously, its selectivity for cancer cells still needs to be explained [Ko et al. (2001) Cancer Lett. 173, 83-91]. In the present study, we characterized the kinetic parameters of radiolabelled [14C] 3BP uptake in three breast cancer cell lines that display different levels of resistance to 3BP: ZR-75-1 < MCF-7 < SK-BR-3. At pH 6.0, the affinity of cancer cells for 3BP transport correlates with their sensitivity, a pattern that does not occur at pH 7.4. In the three cell lines, the uptake of 3BP is dependent on the protonmotive force and is decreased by MCTs (monocarboxylate transporters) inhibitors. In the SK-BR-3 cell line, a sodium-dependent transport also occurs. Butyrate promotes the localization of MCT-1 at the plasma membrane and increases the level of MCT-4 expression, leading to a higher sensitivity for 3BP. In the present study, we demonstrate that this phenotype is accompanied by an increase in affinity for 3BP uptake. Our results confirm the role of MCTs, especially MCT-1, in 3BP uptake and the importance of cluster of differentiation (CD) 147 glycosylation in this process. We find that the affinity for 3BP transport is higher when the extracellular milieu is acidic. This is a typical phenotype of tumour microenvironment and explains the lack of secondary effects of 3BP already described in in vivo studies [Ko et al. (2004) Biochem. Biophys. Res. Commun. 324, 269-275].
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537
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Pietrocola F, Galluzzi L, Bravo-San Pedro JM, Madeo F, Kroemer G. Acetyl coenzyme A: a central metabolite and second messenger. Cell Metab 2015; 21:805-21. [PMID: 26039447 DOI: 10.1016/j.cmet.2015.05.014] [Citation(s) in RCA: 862] [Impact Index Per Article: 95.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Acetyl-coenzyme A (acetyl-CoA) is a central metabolic intermediate. The abundance of acetyl-CoA in distinct subcellular compartments reflects the general energetic state of the cell. Moreover, acetyl-CoA concentrations influence the activity or specificity of multiple enzymes, either in an allosteric manner or by altering substrate availability. Finally, by influencing the acetylation profile of several proteins, including histones, acetyl-CoA controls key cellular processes, including energy metabolism, mitosis, and autophagy, both directly and via the epigenetic regulation of gene expression. Thus, acetyl-CoA determines the balance between cellular catabolism and anabolism by simultaneously operating as a metabolic intermediate and as a second messenger.
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Affiliation(s)
- Federico Pietrocola
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; INSERM U1138, 75006 Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France; Université Pierre et Marie Curie/Paris VI, 75006 Paris, France; Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France
| | - Lorenzo Galluzzi
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; INSERM U1138, 75006 Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France; Université Pierre et Marie Curie/Paris VI, 75006 Paris, France; Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France
| | - José Manuel Bravo-San Pedro
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; INSERM U1138, 75006 Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France; Université Pierre et Marie Curie/Paris VI, 75006 Paris, France; Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France
| | - Frank Madeo
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, 8010 Graz, Austria; BioTechMed-Graz, 8010 Graz, Austria.
| | - Guido Kroemer
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; INSERM U1138, 75006 Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France; Université Pierre et Marie Curie/Paris VI, 75006 Paris, France; Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France; Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, 75015 Paris, France.
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538
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Khan S, Jena G. The role of butyrate, a histone deacetylase inhibitor in diabetes mellitus: experimental evidence for therapeutic intervention. Epigenomics 2015; 7:669-80. [DOI: 10.2217/epi.15.20] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The contribution of epigenetic mechanisms in diabetes mellitus (DM), β-cell reprogramming and its complications is an emerging concept. Recent evidence suggests that there is a link between DM and histone deacetylases (HDACs), because HDAC inhibitors promote β-cell differentiation, proliferation, function and improve insulin resistance. Moreover, gut microbes and diet-derived products can alter the host epigenome. Furthermore, butyrate and butyrate-producing microbes are decreased in DM. Butyrate is a short-chain fatty acid produced from the fermentation of dietary fibers by microbiota and has been proven as an HDAC inhibitor. The present review provides a pragmatic interpretation of chromatin-dependent and independent complex signaling/mechanisms of butyrate for the treatment of Type 1 and Type 2 DM, with an emphasis on the promising strategies for its drugability and therapeutic implication.
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Affiliation(s)
- Sabbir Khan
- Facility for Risk Assessment & Intervention Studies, Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research, Sector-67, S.A.S. Nagar, Punjab 60 062, India
| | - Gopabandhu Jena
- Facility for Risk Assessment & Intervention Studies, Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research, Sector-67, S.A.S. Nagar, Punjab 60 062, India
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539
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O'Keefe SJD, Li JV, Lahti L, Ou J, Carbonero F, Mohammed K, Posma JM, Kinross J, Wahl E, Ruder E, Vipperla K, Naidoo V, Mtshali L, Tims S, Puylaert PGB, DeLany J, Krasinskas A, Benefiel AC, Kaseb HO, Newton K, Nicholson JK, de Vos WM, Gaskins HR, Zoetendal EG. Fat, fibre and cancer risk in African Americans and rural Africans. Nat Commun 2015; 6:6342. [PMID: 25919227 PMCID: PMC4415091 DOI: 10.1038/ncomms7342] [Citation(s) in RCA: 612] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 01/20/2015] [Indexed: 12/12/2022] Open
Abstract
Rates of colon cancer are much higher in African Americans (65:100,000) than in rural South Africans (<5:100,000). The higher rates are associated with higher animal protein and fat, and lower fibre consumption, higher colonic secondary bile acids, lower colonic short-chain fatty acid quantities and higher mucosal proliferative biomarkers of cancer risk in otherwise healthy middle-aged volunteers. Here we investigate further the role of fat and fibre in this association. We performed 2-week food exchanges in subjects from the same populations, where African Americans were fed a high-fibre, low-fat African-style diet and rural Africans a high-fat, low-fibre western-style diet, under close supervision. In comparison with their usual diets, the food changes resulted in remarkable reciprocal changes in mucosal biomarkers of cancer risk and in aspects of the microbiota and metabolome known to affect cancer risk, best illustrated by increased saccharolytic fermentation and butyrogenesis, and suppressed secondary bile acid synthesis in the African Americans.
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Affiliation(s)
- Stephen J D O'Keefe
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Jia V Li
- Department of Surgery and Cancer and Centre for Digestive and Gut Health, Institution of Global Health Innovation, Imperial College, London SW7 2AZ, UK
| | - Leo Lahti
- 1] Laboratory of Microbiology, Wageningen University, Wageningen 6703 HB, The Netherlands [2] Department of Veterinary Bioscience, University of Helsinki, Helsinki, Finland
| | - Junhai Ou
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Franck Carbonero
- University of Illinois at Urbana-Champaign, Champaign, Illinois 61801, USA
| | - Khaled Mohammed
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Joram M Posma
- Department of Surgery and Cancer and Centre for Digestive and Gut Health, Institution of Global Health Innovation, Imperial College, London SW7 2AZ, UK
| | - James Kinross
- Department of Surgery and Cancer and Centre for Digestive and Gut Health, Institution of Global Health Innovation, Imperial College, London SW7 2AZ, UK
| | - Elaine Wahl
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Elizabeth Ruder
- Division of Sports Medicine and Nutrition, School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Kishore Vipperla
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | | | | | - Sebastian Tims
- Laboratory of Microbiology, Wageningen University, Wageningen 6703 HB, The Netherlands
| | - Philippe G B Puylaert
- Laboratory of Microbiology, Wageningen University, Wageningen 6703 HB, The Netherlands
| | - James DeLany
- Division of Endocrinology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Alyssa Krasinskas
- Division of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Ann C Benefiel
- University of Illinois at Urbana-Champaign, Champaign, Illinois 61801, USA
| | - Hatem O Kaseb
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Keith Newton
- University of KwaZulu-Natal, Durban, South Africa
| | - Jeremy K Nicholson
- Department of Surgery and Cancer and Centre for Digestive and Gut Health, Institution of Global Health Innovation, Imperial College, London SW7 2AZ, UK
| | - Willem M de Vos
- 1] Laboratory of Microbiology, Wageningen University, Wageningen 6703 HB, The Netherlands [2] Department of Veterinary Bioscience, University of Helsinki, Helsinki, Finland [3] RPU Immunolbiology, Department of Bacteriology and Immunology, University of Helsinki, Helsinki 00014, Finland
| | - H Rex Gaskins
- University of Illinois at Urbana-Champaign, Champaign, Illinois 61801, USA
| | - Erwin G Zoetendal
- Laboratory of Microbiology, Wageningen University, Wageningen 6703 HB, The Netherlands
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540
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Evans CA, Rosser R, Waby JS, Noirel J, Lai D, Wright PC, Williams EA, Riley SA, Bury JP, Corfe BM. Reduced keratin expression in colorectal neoplasia and associated fields is reversible by diet and resection. BMJ Open Gastroenterol 2015; 2:e000022. [PMID: 26462274 PMCID: PMC4599164 DOI: 10.1136/bmjgast-2014-000022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/19/2014] [Accepted: 12/22/2014] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Patients with adenomatous colonic polyps are at increased risk of developing further polyps suggesting field-wide alterations in cancer predisposition. The current study aimed to identify molecular alterations in the normal mucosa in the proximity of adenomatous polyps and to assess the modulating effect of butyrate, a chemopreventive compound produced by fermentation of dietary residues. METHODS A cross-sectional study was undertaken in patients with adenomatous polyps: biopsy samples were taken from the adenoma, and from macroscopically normal mucosa on the contralateral wall to the adenoma and from the mid-sigmoid colon. In normal subjects biopsies were taken from the mid-sigmoid colon. Biopsies were frozen for proteomic analysis or formalin-fixed for immunohistochemistry. Proteomic analysis was undertaken using iTRAQ workflows followed by bioinformatics analyses. A second dietary fibre intervention study arm used the same endpoints and sampling strategy at the beginning and end of a high-fibre intervention. RESULTS Key findings were that keratins 8, 18 and 19 were reduced in expression level with progressive proximity to the lesion. Lesional tissue exhibited multiple K8 immunoreactive bands and overall reduced levels of keratin. Biopsies from normal subjects with low faecal butyrate also showed depressed keratin expression. Resection of the lesion and elevation of dietary fibre intake both appeared to restore keratin expression level. CONCLUSION Changes in keratin expression associate with progression towards neoplasia, but remain modifiable risk factors. Dietary strategies may improve secondary chemoprevention. TRIAL REGISTRATION NUMBER ISRCTN90852168.
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Affiliation(s)
- Caroline A Evans
- Department of Chemical and Biological Engineering , ChELSI Institute, University of Sheffield , Sheffield , UK
| | - Ria Rosser
- Molecular Gastroenterology Research Group, Department of Oncology , University of Sheffield, The Medical School , Sheffield , UK
| | - Jennifer S Waby
- Molecular Gastroenterology Research Group, Department of Oncology , University of Sheffield, The Medical School , Sheffield , UK ; Department of Biological Sciences , The University of Hull , Hull , UK
| | - Josselin Noirel
- Department of Chemical and Biological Engineering , ChELSI Institute, University of Sheffield , Sheffield , UK ; Conservatoire National des Arts et Mmétiers , Paris , France
| | - Daphne Lai
- Molecular Gastroenterology Research Group, Department of Oncology , University of Sheffield, The Medical School , Sheffield , UK ; Department of Geography , University of Sheffield , Sheffield , UK
| | - Phillip C Wright
- Department of Chemical and Biological Engineering , ChELSI Institute, University of Sheffield , Sheffield , UK
| | - Elizabeth A Williams
- Human Nutrition Unit, Department of Oncology , University of Sheffield, The Medical School , Sheffield , UK
| | - Stuart A Riley
- Department of Gastroenterology , Northern General Hospital , Sheffield , UK
| | - Jonathan P Bury
- Department of Pathology , Royal Hallamshire Hospital , Sheffield , UK
| | - Bernard M Corfe
- Molecular Gastroenterology Research Group, Department of Oncology , University of Sheffield, The Medical School , Sheffield , UK ; Insigneo Institute for in Silico Medicine, The University of Sheffield , Sheffield , UK
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541
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Kelly CJ, Zheng L, Campbell EL, Saeedi B, Scholz CC, Bayless AJ, Wilson KE, Glover LE, Kominsky DJ, Magnuson A, Weir TL, Ehrentraut SF, Pickel C, Kuhn KA, Lanis JM, Nguyen V, Taylor CT, Colgan SP. Crosstalk between Microbiota-Derived Short-Chain Fatty Acids and Intestinal Epithelial HIF Augments Tissue Barrier Function. Cell Host Microbe 2015; 17:662-71. [PMID: 25865369 DOI: 10.1016/j.chom.2015.03.005] [Citation(s) in RCA: 1026] [Impact Index Per Article: 114.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 11/21/2014] [Accepted: 01/22/2015] [Indexed: 02/07/2023]
Abstract
Interactions between the microbiota and distal gut are fundamental determinants of human health. Such interactions are concentrated at the colonic mucosa and provide energy for the host epithelium through the production of the short-chain fatty acid butyrate. We sought to determine the role of epithelial butyrate metabolism in establishing the austere oxygenation profile of the distal gut. Bacteria-derived butyrate affects epithelial O2 consumption and results in stabilization of hypoxia-inducible factor (HIF), a transcription factor coordinating barrier protection. Antibiotic-mediated depletion of the microbiota reduces colonic butyrate and HIF expression, both of which are restored by butyrate supplementation. Additionally, germ-free mice exhibit diminished retention of O2-sensitive dyes and decreased stabilized HIF. Furthermore, the influences of butyrate are lost in cells lacking HIF, thus linking butyrate metabolism to stabilized HIF and barrier function. This work highlights a mechanism where host-microbe interactions augment barrier function in the distal gut.
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Affiliation(s)
- Caleb J Kelly
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Leon Zheng
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Eric L Campbell
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Bejan Saeedi
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Carsten C Scholz
- School of Medicine and Medical Science, Conway Institute, University College Dublin, Ireland
| | - Amanda J Bayless
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Kelly E Wilson
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Louise E Glover
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Douglas J Kominsky
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Anesthesiology, University of Colorado, Aurora, CO 80045, USA
| | - Aaron Magnuson
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO 80523, USA
| | - Tiffany L Weir
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO 80523, USA
| | - Stefan F Ehrentraut
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA; Department of Anesthesiology, University of Bonn, Bonn 53113, Germany
| | - Christina Pickel
- School of Medicine and Medical Science, Conway Institute, University College Dublin, Ireland
| | - Kristine A Kuhn
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Jordi M Lanis
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Vu Nguyen
- Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Cormac T Taylor
- School of Medicine and Medical Science, Conway Institute, University College Dublin, Ireland
| | - Sean P Colgan
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA.
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542
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Bultman SJ, Jobin C. Microbial-derived butyrate: an oncometabolite or tumor-suppressive metabolite? Cell Host Microbe 2015; 16:143-145. [PMID: 25121740 DOI: 10.1016/j.chom.2014.07.011] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Dietary factors, microbial composition, and metabolism are intimately intertwined into a complex network whose activities influence important intestinal functions. In a recent issue of Cell, Belcheva et al. (2014) show that microbial-derived butyrate promotes proliferation of cancer-initiated intestinal epithelial cells, suggesting that it can act as an oncometabolite.
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Affiliation(s)
- Scott J Bultman
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27516, USA.
| | - Christian Jobin
- Department of Infectious Diseases & Pathology, Department of Medicine, University of Florida, Gainesville, FL 32611, USA.
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543
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Abstract
Increasingly, the gut microbiome is implicated in the etiology of cancer, not only as an infectious agent but also by altering exposure to dietary compounds that influence disease risk. Whereas the composition and metabolism of the gut microbiome is influenced by diet, the gut microbiome can also modify dietary exposures in ways that are beneficial or detrimental to the human host. The colonic bacteria metabolize macronutrients, either as specialists or in consortia of bacteria, in a variety of diverse metabolic pathways. Microbial metabolites of diet can also be epigenetic activators of gene expression that may influence cancer risk in humans. Epigenetics involves heritable changes in gene expression via post-translational and post-transcriptional modifications. Microbial metabolites can influence epigenetics by altering the pool of compounds used for modification or by directly inhibiting enzymes involved in epigenetic pathways. Colonic epithelium is immediately exposed to these metabolites, although some metabolites are also found in systemic circulation. In this review, we discuss the role of the gut microbiome in dietary metabolism and how microbial metabolites may influence gene expression linked to colon cancer risk.
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544
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Bardhan K, Paschall AV, Yang D, Chen MR, Simon PS, Bhutia YD, Martin PM, Thangaraju M, Browning DD, Ganapathy V, Heaton CM, Gu K, Lee JR, Liu K. IFNγ Induces DNA Methylation-Silenced GPR109A Expression via pSTAT1/p300 and H3K18 Acetylation in Colon Cancer. Cancer Immunol Res 2015; 3:795-805. [PMID: 25735954 DOI: 10.1158/2326-6066.cir-14-0164] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 02/23/2015] [Indexed: 01/08/2023]
Abstract
Short-chain fatty acids, metabolites produced by colonic microbiota from fermentation of dietary fiber, act as anti-inflammatory agents in the intestinal tract to suppress proinflammatory diseases. GPR109A is the receptor for short-chain fatty acids. The functions of GPR109A have been the subject of extensive studies; however, the molecular mechanisms underlying GPR109A expression is largely unknown. We show that GPR109A is highly expressed in normal human colon tissues, but is silenced in human colon carcinoma cells. The GPR109A promoter DNA is methylated in human colon carcinoma. Strikingly, we observed that IFNγ, a cytokine secreted by activated T cells, activates GPR109A transcription without altering its promoter DNA methylation. Colon carcinoma grows significantly faster in IFNγ-deficient mice than in wild-type mice in an orthotopic colon cancer mouse model. A positive correlation was observed between GPR109A protein level and tumor-infiltrating T cells in human colon carcinoma specimens, and IFNγ expression level is higher in human colon carcinoma tissues than in normal colon tissues. We further demonstrated that IFNγ rapidly activates pSTAT1 that binds to the promoter of p300 to activate its transcription. p300 then binds to the GPR109A promoter to induce H3K18 hyperacetylation, resulting in chromatin remodeling in the methylated GPR109A promoter. The IFNγ-activated pSTAT1 then directly binds to the methylated but hyperacetylated GPR109 promoter to activate its transcription. Overall, our data indicate that GPR109A acts as a tumor suppressor in colon cancer, and the host immune system might use IFNγ to counteract DNA methylation-mediated GPR109A silencing as a mechanism to suppress tumor development.
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Affiliation(s)
- Kankana Bardhan
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia
| | - Amy V Paschall
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Cancer Center, Georgia Regents University, Augusta, Georgia. Charlie Norwood VA Medical Center, Augusta, Georgia
| | - Dafeng Yang
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Charlie Norwood VA Medical Center, Augusta, Georgia
| | - May R Chen
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia
| | - Priscilla S Simon
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Cancer Center, Georgia Regents University, Augusta, Georgia. Charlie Norwood VA Medical Center, Augusta, Georgia
| | - Yangzom D Bhutia
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia
| | - Pamela M Martin
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia
| | - Muthusamy Thangaraju
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Cancer Center, Georgia Regents University, Augusta, Georgia
| | - Darren D Browning
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Cancer Center, Georgia Regents University, Augusta, Georgia
| | - Vadivel Ganapathy
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Cancer Center, Georgia Regents University, Augusta, Georgia
| | - Christopher M Heaton
- Department of Pathology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia
| | - Keni Gu
- University Hospital, Augusta, Georgia
| | - Jeffrey R Lee
- Charlie Norwood VA Medical Center, Augusta, Georgia. Department of Pathology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia
| | - Kebin Liu
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Cancer Center, Georgia Regents University, Augusta, Georgia. Charlie Norwood VA Medical Center, Augusta, Georgia.
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545
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Borlak J, Singh P, Gazzana G. Proteome mapping of epidermal growth factor induced hepatocellular carcinomas identifies novel cell metabolism targets and mitogen activated protein kinase signalling events. BMC Genomics 2015; 16:124. [PMID: 25872475 PMCID: PMC4357185 DOI: 10.1186/s12864-015-1312-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 02/03/2015] [Indexed: 02/06/2023] Open
Abstract
Background Hepatocellular carcinoma (HCC) is on the rise and the sixth most common cancer worldwide. To combat HCC effectively research is directed towards its early detection and the development of targeted therapies. Given the fact that epidermal growth factor (EGF) is an important mitogen for hepatocytes we searched for disease regulated proteins to improve an understanding of the molecular pathogenesis of EGF induced HCC. Disease regulated proteins were studied by 2DE MALDI-TOF/TOF and a transcriptomic approach, by immunohistochemistry and advanced bioinformatics. Results Mapping of EGF induced liver cancer in a transgenic mouse model identified n = 96 (p < 0.05) significantly regulated proteins of which n = 54 were tumour-specific. To unravel molecular circuits linked to aberrant EGFR signalling diverse computational approaches were employed and this defined n = 7 key nodes using n = 82 disease regulated proteins for network construction. STRING analysis revealed protein-protein interactions of > 70% disease regulated proteins with individual proteins being validated by immunohistochemistry. The disease regulated network proteins were mapped to distinct pathways and bioinformatics provided novel insight into molecular circuits associated with significant changes in either glycolysis and gluconeogenesis, argine and proline metabolism, protein processing in endoplasmic reticulum, Hif- and MAPK signalling, lipoprotein metabolism, platelet activation and hemostatic control as a result of aberrant EGF signalling. The biological significance of the findings was corroborated with gene expression data derived from tumour tissues to evntually define a rationale by which tumours embark on intriguing changes in metabolism that is of utility for an understanding of tumour growth. Moreover, among the EGF tumour specific proteins n = 11 were likewise uniquely expressed in human HCC and for n = 49 proteins regulation in human HCC was confirmed using the publically available Human Protein Atlas depository, therefore demonstrating clinical significance. Conclusion Novel insight into the molecular pathogenesis of EGF induced liver cancer was obtained and among the 37 newly identified proteins several are likely candidates for the development of molecularly targeted therapies and include the nucleoside diphosphate kinase A, bifunctional ATP-dependent dihydroyacetone kinase and phosphatidylethanolamine-binding protein1, the latter being an inhibitor of the Raf-1 kinase. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1312-z) contains supplementary material, which is available to authorized users.
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546
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Abstract
The molecular signatures of epigenetic regulation and chromatin architectures are fundamental to genetically determined biological processes. Covalent and post-translational chemical modification of the chromatin template can sensitize the genome to changing environmental conditions to establish diverse functional states. Recent interest and research focus surrounds the direct connections between metabolism and chromatin dynamics, which now represents an important conceptual challenge to explain many aspects of metabolic dysfunction. Several components of the epigenetic machinery require intermediates of cellular metabolism for enzymatic function. Furthermore, changes to intracellular metabolism can alter the expression of specific histone methyltransferases and acetyltransferases conferring widespread variations in epigenetic modification patterns. Specific epigenetic influences of dietary glucose and lipid consumption, as well as undernutrition, are observed across numerous organs and pathways associated with metabolism. Studies have started to define the chromatin-dependent mechanisms underlying persistent and pathophysiological changes induced by altered metabolism. Importantly, numerous recent studies demonstrate that gene regulation underlying phenotypic determinants of adult metabolic health is influenced by maternal and early postnatal diet. These emerging concepts open new perspectives to combat the rising global epidemic of metabolic disorders.
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Affiliation(s)
- Samuel T. Keating
- From the Epigenetics in Human Health and Disease Laboratory (S.T.K., A.E.-O.) and Epigenomics Profiling Facility (S.T.K., A.E.-O.), Baker IDI Heart & Diabetes Institute, The Alfred Medical Research and Education Precinct, Melbourne, Victoria, Australia; Department of Pathology, The University of Melbourne, Victoria, Australia (A.E.-O.); and Central Clinical School, Department of Medicine, Monash University, Melbourne, Victoria, Australia (A.E.-O.)
| | - Assam El-Osta
- From the Epigenetics in Human Health and Disease Laboratory (S.T.K., A.E.-O.) and Epigenomics Profiling Facility (S.T.K., A.E.-O.), Baker IDI Heart & Diabetes Institute, The Alfred Medical Research and Education Precinct, Melbourne, Victoria, Australia; Department of Pathology, The University of Melbourne, Victoria, Australia (A.E.-O.); and Central Clinical School, Department of Medicine, Monash University, Melbourne, Victoria, Australia (A.E.-O.)
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547
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The multifactorial interplay of diet, the microbiome and appetite control: current knowledge and future challenges. Proc Nutr Soc 2015; 74:235-44. [DOI: 10.1017/s0029665114001670] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The recent availability of high-throughput nucleic acid sequencing technologies has rapidly advanced approaches to analysing the role of the gut microbiome in governance of human health, including gut health, and also metabolic, cardiovascular and mental health,inter alia. Recent scientific studies suggest that energy intake (EI) perturbations at the population level cannot account for the current obesity epidemic, and significant work is investigating the potential role of the microbiome, and in particular its metabolic products, notably SCFA, predominantly acetate, propionate and butyrate, the last of which is an energy source for the epithelium of the large intestine. The energy yield from dietary residues may be a significant factor influencing energy balance. This review posits that the contribution towards EI is governed by EI diet composition (not just fibre), the composition of the microbiome and by the levels of physical activity. Furthermore, we hypothesise that these factors do not exist in a steady state, but rather are dynamic, with both short- and medium-term effects on appetite regulation. We suggest that the existing modelling strategies for bacterial dynamics, specifically for growth in chemostat culture, are of utility in understanding the dynamic interplay of diet, activity and microbiomic organisation. Such approaches may be informative in optimising the application of dietary and microbial therapy to promote health.
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548
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Belcheva A, Irrazabal T, Martin A. Gut microbial metabolism and colon cancer: Can manipulations of the microbiota be useful in the management of gastrointestinal health? Bioessays 2015; 37:403-12. [DOI: 10.1002/bies.201400204] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - Alberto Martin
- Department of Immunology; University of Toronto; ON Canada
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549
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Fan J, Krautkramer KA, Feldman JL, Denu JM. Metabolic regulation of histone post-translational modifications. ACS Chem Biol 2015; 10:95-108. [PMID: 25562692 DOI: 10.1021/cb500846u] [Citation(s) in RCA: 224] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Histone post-translational modifications regulate transcription and other DNA-templated functions. This process is dynamically regulated by specific modifying enzymes whose activities require metabolites that either serve as cosubstrates or act as activators/inhibitors. Therefore, metabolism can influence histone modification by changing local concentrations of key metabolites. Physiologically, the epigenetic response to metabolism is important for nutrient sensing and environment adaption. In pathologic states, the connection between metabolism and histone modification mediates epigenetic abnormality in complex disease. In this review, we summarize recent studies of the molecular mechanisms involved in metabolic regulation of histone modifications and discuss their biological significance.
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Affiliation(s)
- Jing Fan
- Department of Biomolecular Chemistry and the Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
| | - Kimberly A. Krautkramer
- Department of Biomolecular Chemistry and the Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
| | - Jessica L. Feldman
- Department of Biomolecular Chemistry and the Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
| | - John M. Denu
- Department of Biomolecular Chemistry and the Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
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550
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Jiang Y, Zhang WH, Gao F, Zhou GH. Micro-encapsulated sodium butyrate attenuates oxidative stress induced by corticosterone exposure and modulates apoptosis in intestinal mucosa of broiler chickens. ANIMAL PRODUCTION SCIENCE 2015. [DOI: 10.1071/an13348] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The aim of the present study was to investigate the effects of micro-encapsulated sodium butyrate (MSB) on oxidative stress and apoptosis induced by dietary corticosterone (CORT) in the intestinal mucosa of broiler chickens. In total, 120 1-day-old male broilers (Arbor Acres) were randomly allocated to two treatment groups and were fed on a control diet (without MSB) or 0.4 g MSB/kg diet. Each treatment had six replicates with five chickens each. From 7 days of age onward, 50% of the chickens in each dietary treatment were subjected to CORT treatment (30 mg/kg of diet). The experimental period was 21 days. The results showed that CORT administration decreased (P < 0.001) feed intake and bodyweight gain and increased (P < 0.001) feed to gain ratio (F : G) of broiler chickens. The dietary MSB supplementation decreased (P < 0.01) F : G and there was an interaction between MSB and CORT on F : G (P < 0.05). Moreover, the activities of superoxide dismutase, glutathione peroxidase and catalase in intestinal mucosa were decreased (P < 0.01 or P < 0.001), and the concentrations of malondialdehyde in the intestinal mucosa were elevated (P < 0.01) by CORT administration. In contrast, treatment of MSB increased (P < 0.01) the catalase activities in duodenal and jejunal mucosa and decreased (P < 0.01) the malondialdehyde concentrations in duodenal mucosa. Higher apoptosis index and lower mRNA expressions of bcl-2 in intestinal epithelial cells were induced (P < 0.05) by CORT treatment. However, MSB decreased (P < 0.05) the apoptosis index and increased the bcl-2 expression. These results suggest that dietary MSB can partially attenuate oxidative stress induced by CORT treatment and inhibit apoptosis of intestinal epithelial cells in broiler chickens.
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