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Affiliation(s)
- John B Vincent
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, 35487-0336, USA.
| | - Forrest H Nielsen
- Research Nutritionist Consultant, 3000 Belmont Road, Grand Forks, ND, USA
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, 39762, USA
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2
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Adegoye GA, Tolar-Peterson T, Ene-Obong HN, Nuntah JN, Pasqualino MM, Mathews R, Silva JL, Cheng WH, Evans MW, Pincus L. Development and Validation of Nutrition and Food Safety Educational Material for Fish Processors in Nigeria. Int J Environ Res Public Health 2023; 20:4891. [PMID: 36981799 PMCID: PMC10049519 DOI: 10.3390/ijerph20064891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/27/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
INTRODUCTION fish can be an affordable and accessible animal-source food in many Low- and Middle-Income Countries (LMIC). BACKGROUND Traditional fish processing methods pose a risk of exposing fish to various contaminants that may reduce their nutritional benefit. In addition, a lack of literacy may increase women fish processors' vulnerability to malnutrition and foodborne diseases. OBJECTIVE The overall aim of the project was to educate women and youth fish processors in Delta State, Nigeria about the benefit of fish in the human diet and to develop low literacy tools to help them better market their products. The objective of this study was to describe the development and validation of a low-literacy flipbook designed to teach women fish processors about nutrition and food safety. METHOD developing and validating instructional material requires understanding the population, high-quality and relevant graphics, and the involvement of relevant experts to conduct the content validation using the Content Validity Index (CVI) and the index value translated with the Modified Kappa Index (k). RESULT The Item-level Content Validity Index (I-CVI) value of all domains evaluated at the initial stage was 0.83 and the Scale-level Content Validity Index (S-CVI) was 0.90. At the final stage, the material was validated with CVI 0.983 by four experts and satisfied the expected minimum CVI value for this study (CVI ≥ 0.83, p-value = 0.05). The overall evaluation of the newly developed and validated flipbook was "excellent". CONCLUSIONS the developed material was found to be appropriate for training fish processors in Nigeria in nutrition and food safety and could be modified for a population of fish processors in other LMICs.
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Affiliation(s)
- Grace Adeola Adegoye
- Department of Nutrition and Health Science, Ball State University, Muncie, IN 47306, USA;
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Starkville, MS 39762, USA; (R.M.); (J.L.S.); (W.-H.C.)
| | - Terezie Tolar-Peterson
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Starkville, MS 39762, USA; (R.M.); (J.L.S.); (W.-H.C.)
- Department of Health Science and Human Ecology, California State University San Bernardino, San Bernardino, CA 92407, USA
| | | | - Joseph Nkem Nuntah
- Department of Aquaculture and Fisheries Management, University of Benin, Benin 300213, Nigeria;
| | - Monica M. Pasqualino
- WorldFish One CGIAR, Jalan Batu Maung, Bayan Lepas 11960, Malaysia; (M.M.P.); (L.P.)
- Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
| | - Rahel Mathews
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Starkville, MS 39762, USA; (R.M.); (J.L.S.); (W.-H.C.)
| | - Juan L. Silva
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Starkville, MS 39762, USA; (R.M.); (J.L.S.); (W.-H.C.)
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Starkville, MS 39762, USA; (R.M.); (J.L.S.); (W.-H.C.)
| | - Marion Willard Evans
- College of Nursing and Health Professions, The University of Southern Mississippi, Hattiesburg, MS 39406, USA;
| | - Lauren Pincus
- WorldFish One CGIAR, Jalan Batu Maung, Bayan Lepas 11960, Malaysia; (M.M.P.); (L.P.)
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3
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Zeng H, Safratowich BD, Cheng WH, Bukowski MR. Identification of oncogenic signatures in the inflammatory colon of C57BL/6 mice fed a high-fat diet. J Nutr Biochem 2023; 111:109188. [PMID: 36272693 DOI: 10.1016/j.jnutbio.2022.109188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 06/21/2022] [Accepted: 09/15/2022] [Indexed: 11/07/2022]
Abstract
Adoption of an obesogenic diet such as a high-fat diet (HFD) results in obesity, bacterial dysbiosis, chronic inflammation, and cancer. Gut bacteria and their metabolites are recognized by interleukin-1 (IL-1R)/toll-like receptors (TLRs) which are essential to maintain intestinal homeostasis. Moreover, host extracellular microRNAs (miRNAs) can alter bacterial growth in the colon. Characterization of the underlying mechanisms may lead to identifying fecal oncogenic signatures reflecting colonic health. We hypothesize that an HFD accelerates the inflammatory process and modulates IL-1R/TLR pathways, gut microbiome, and disease-related miRNA in the colon. In this study, 4-week-old C57BL/6 mice were fed a modified AIN93G diet (AIN, 16% energy fat) or an HFD (45% energy fat) for 15 weeks. In addition to increased body weight and body fat composition, the concentrations of plasma interleukin 6 (IL-6), inflammatory cell infiltration, β-catenin, and cell proliferation marker (Ki67) in the colon were elevated > 68% in the HFD group compared to the AIN group. Using a PCR array analysis, we identified 14 out of 84 genes with a ≥ 24% decrease in mRNA content related to IL-1R and TLR pathways in colonic epithelial cells in mice fed an HFD compared to the AIN. Furthermore, the content of Alistipes bacteria, the Firmicutes/Bacteroidetes ratio, microRNA-29a, and deoxycholic and lithocholic acids (secondary bile acids with oncogenic potential) were 55% greater in the feces of the HFD group compared to the AIN group. Collectively, this composite, a multimodal profile may represent a unique HFD-induced fecal signature for colonic inflammation and cancer in C57BL/6 mice.
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Affiliation(s)
- Huawei Zeng
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, North Dakota, USA.
| | - Bryan D Safratowich
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, North Dakota, USA
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, USA
| | - Michael R Bukowski
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, North Dakota, USA
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Zeng H, Safratowich BD, Cheng WH, Magnuson AD, Picklo MJ. Changes in the Fecal Metabolome Accompany an Increase in Aberrant Crypt Foci in the Colon of C57BL/6 Mice Fed with a High-Fat Diet. Biomedicines 2022; 10:biomedicines10112891. [PMID: 36428460 PMCID: PMC9687353 DOI: 10.3390/biomedicines10112891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/01/2022] [Accepted: 11/06/2022] [Indexed: 11/16/2022] Open
Abstract
High-fat diet (HFD)-induced obesity is a risk factor for colon cancer. Our previous data show that compared to an AIN-93 diet (AIN), a HFD promotes azoxymethane (AOM)-induced colonic aberrant crypt foci (ACF) formation and microbial dysbiosis in C57BL/6 mice. To explore the underlying metabolic basis, we hypothesize that AOM treatment triggers a different fecal metabolomic profile in C57BL/6 mice fed the HFD or the AIN. We found that 65 of 196 identified metabolites were significantly different among the four groups of mice (AIN, AIN + AOM, HFD, and HFD + AOM). A sparse partial least squares discriminant analysis (sPLSDA) showed that concentrations of nine fecal lipid metabolites were increased in the HFD + AOM compared to the HFD, which played a key role in overall metabolome group separation. These nine fecal lipid metabolite concentrations were positively associated with the number of colonic ACF, the cell proliferation of Ki67 proteins, and the abundance of dysbiotic bacteria. These data suggest that the process of AOM-induced ACF formation may increase selective fecal lipid concentrations in mice fed with a HFD but not an AIN. Collectively, the accumulation of these critical fecal lipid species may alter the overall metabolome during tumorigenesis in the colon.
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Affiliation(s)
- Huawei Zeng
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203, USA
- Correspondence: ; Tel.: +1-701-795-8465
| | - Bryan D. Safratowich
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203, USA
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Starkville, MS 39762, USA
| | - Andrew D. Magnuson
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203, USA
| | - Matthew J. Picklo
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203, USA
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Huang YC, Combs GF, Wu TL, Zeng H, Cheng WH. Selenium status and type 2 diabetes risk. Arch Biochem Biophys 2022; 730:109400. [PMID: 36122760 DOI: 10.1016/j.abb.2022.109400] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 12/15/2022]
Abstract
Optimal selenium (Se) status is necessary for overall health. That status can be affected by food intake pattern, age, sex, and health status. At nutritional levels of intake, Se functions metabolically as an essential constituent of some two dozen selenoproteins, most, if not all, of which have redox functions. Insufficient dietary intake of Se reduces, to varying degrees, the expression of these selenoproteins. Recent clinical and animal studies have indicated that both insufficient and excessive Se intakes may increase risk of type 2 diabetes mellitus (T2D), perhaps by way of selenoprotein actions. In this review, we discuss the current evidence linking Se status and T2D risk, and the roles of 14 selenoproteins and other proteins involved in selenoprotein biosynthesis. Understanding such results can inform the setting of safe and adequate Se intakes.
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Affiliation(s)
- Ying-Chen Huang
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, USA
| | - Gerald F Combs
- Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, USA
| | - Tung-Lung Wu
- Department of Mathematics and Statistics, Mississippi State University, Mississippi State, MS, USA
| | - Huawei Zeng
- USDA, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND, USA
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, USA.
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Reeder N, Tolar-Peterson T, Bailey RH, Cheng WH, Evans MW. Food Insecurity and Depression among US Adults: NHANES 2005-2016. Nutrients 2022; 14:nu14153081. [PMID: 35956257 PMCID: PMC9370686 DOI: 10.3390/nu14153081] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 07/25/2022] [Indexed: 02/04/2023] Open
Abstract
A growing body of evidence suggests that food insecurity is associated with adverse mental health outcomes such as depression and anxiety. In this study, the relationship between food insecurity and depression was examined using data from the 2005−2016 National Health and Nutrition Examination Survey (NHANES). Food insecurity was assessed with the 18-item United States Food Security Survey Module with zero affirmative responses indicating high food security, 1 or 2 affirmative responses indicating marginal food security, and ≥3 affirmative responses indicating food insecurity. Depression was assessed with the Patient Health Questionnaire-9 with scores ≥10 indicating depression. Data were analyzed from 28,448 adult participants aged 20 or older. Food insecurity was present in 19.2% of the sample population (n = 5452). Food security status was significantly associated with gender, race, education level, marital status, smoking status, and BMI (Rao-Scott chi-square, p < 0.05). Fully food secure and very low food security adults experienced depression at a rate of 5.1% and 25.8%, respectively (Rao-Scott chi-square, p < 0.0001). Participants with very low food security had a significantly greater odds of depression than food secure adults, OR = 3.50 (95% CI: 2.98, 4.12). These findings suggest that food insecurity is a significant risk factors for depression in US adults over 20 years of age. To address this issue in our citizenry, police initiatives and public health interventions addressing both food access and mental health should be prioritized.
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Affiliation(s)
- Nicole Reeder
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Starkville, MS 39762, USA; (N.R.); (W.-H.C.)
| | - Terezie Tolar-Peterson
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Starkville, MS 39762, USA; (N.R.); (W.-H.C.)
- Correspondence: ; Tel.: +1-662-325-5902
| | - R. Hartford Bailey
- Pathobiology and Population Medicine, College of Veterinary Medicine, Mississippi State University, Starkville, MS 39762, USA;
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Starkville, MS 39762, USA; (N.R.); (W.-H.C.)
| | - Marion W. Evans
- School of Health Professions, The University of Southern Mississippi, Hattiesburg, MS 39406, USA;
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Poudel S, Li T, Chen S, Zhang X, Cheng WH, Sukumaran AT, Kiess AS, Zhang L. Prevalence, Antimicrobial Resistance, and Molecular Characterization of Campylobacter Isolated from Broilers and Broiler Meat Raised without Antibiotics. Microbiol Spectr 2022; 10:e0025122. [PMID: 35536038 PMCID: PMC9241809 DOI: 10.1128/spectrum.00251-22] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 04/18/2022] [Indexed: 12/28/2022] Open
Abstract
Campylobacter is one of the main bacterial pathogens that cause campylobacteriosis in the United States. Poultry is considered a major reservoir for the transmission of Campylobacter to humans. This study aimed to determine the prevalence and molecular characteristics of Campylobacter in the no-antibiotics-ever (NAE) broilers. A total of 414 samples were collected, among which 160 retail chicken samples were purchased from grocery stores and 254 samples were collected from broiler farms located in Mississippi State. The overall prevalence of Campylobacter was 25.4%, and a significantly higher prevalence was observed in retail chicken than in the farm samples (36.3% versus 18.5%; P < 0.0001), respectively. The prevalence of Campylobacter was not different (P = 0.263) between conventional retail (40.0%) and NAE (31.4%) retail chicken. Campylobacter jejuni was the predominant species among the positive isolates, accounting for 78.1%. Among the 82 C. jejuni isolates, 52.4% of the isolates carried the gyrA gene followed by the tet(O) gene (14.6%), whereas toxin-producing genes cdtA, cdtB, and cdtC were carried by 43.9%, 46.3%, and 43.9%, respectively. However, none of these virulence genes were detected in C. jejuni isolated from litter samples. Among tested C. jejuni, 13.6% of the isolates were multidrug resistant. The highest resistance was observed against nalidixic acid (49.2%), followed by tetracycline (23.7%). Our study suggests that the prevalence of Campylobacter was higher in retail meat samples than in environmental samples obtained from farms, and there was no difference in Campylobacter prevalence among conventional and NAE retail chicken. IMPORTANCE The FDA antibiotic withdrawal policy has led to a shift in the production system, from conventional antibiotics fed birds to no antibiotics ever (NAE) raised birds. However, the impact of this shift to NAE on the prevalence and characteristics of Campylobacter has not been studied on the farm or in retail chicken meats. The objective of this study was to determine the current prevalence of Campylobacter and the distribution of their antimicrobial resistance and virulence genes in NAE-raised broilers. The findings of this study will help the industry to take necessary action to develop effective mitigation strategies for reducing Campylobacter contamination in NAE broilers.
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Affiliation(s)
- Sabin Poudel
- Department of Poultry Science, Mississippi State University, Mississippi State, Mississippi, USA
| | - Tianmin Li
- Department of Poultry Science, Mississippi State University, Mississippi State, Mississippi, USA
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Saijuan Chen
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, Hebei, China
- Agricultural Technology Innovation Center in Mountainous Areas of Hebei Province, Baoding, Hebei, China
| | - Xue Zhang
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Mississippi State, Mississippi, USA
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Mississippi State, Mississippi, USA
| | - Anuraj T. Sukumaran
- Department of Poultry Science, Mississippi State University, Mississippi State, Mississippi, USA
| | - Aaron S. Kiess
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, North Carolina, USA
| | - Li Zhang
- Department of Poultry Science, Mississippi State University, Mississippi State, Mississippi, USA
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Chen HC, Tang HH, Hsu WH, Wu SY, Cheng WH, Wang BY, Su CL. Vulnerability of Triple-Negative Breast Cancer to Saponin Formosanin C-Induced Ferroptosis. Antioxidants (Basel) 2022; 11:antiox11020298. [PMID: 35204181 PMCID: PMC8868405 DOI: 10.3390/antiox11020298] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/27/2022] [Accepted: 01/30/2022] [Indexed: 01/25/2023] Open
Abstract
Targeting ferritin via autophagy (ferritinophagy) to induce ferroptosis, an iron- and reactive oxygen species (ROS)-dependent cell death, provides novel strategies for cancer therapy. Using a ferroptosis-specific inhibitor and iron chelator, the vulnerability of triple-negative breast cancer (TNBC) MDA-MB-231 cells to ferroptosis was identified and compared to that of luminal A MCF-7 cells. Saponin formosanin C (FC) was revealed as a potent ferroptosis inducer characterized by superior induction in cytosolic and lipid ROS formation as well as GPX4 depletion in MDA-MB-231 cells. The FC-induced ferroptosis was paralleled by downregulation of ferroportin and xCT expressions. Immunoprecipitation and electron microscopy demonstrated the involvement of ferritinophagy in FC-treated MDA-MB-231 cells. The association of FC with ferroptosis was strengthened by the results that observed an enriched pathway with differentially expressed genes from FC-treated cells. FC sensitized cisplatin-induced ferroptosis in MDA-MB-231 cells. Through integrated analysis of differentially expressed genes and pathways using the METABRIC patients’ database, we confirmed that autophagy and ferroptosis were discrepant between TNBC and luminal A and that TNBC was hypersensitive to ferroptosis. Our data suggest a therapeutic strategy by ferroptosis against TNBC, an aggressive subtype with a poor prognosis.
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Affiliation(s)
- Hsin-Chih Chen
- Department of Human Development and Family Studies, National Taiwan Normal University, Taipei 106, Taiwan;
| | - Han-Hsuan Tang
- Graduate Program of Nutrition Science, School of Life Science, National Taiwan Normal University, Taipei 116, Taiwan; (H.-H.T.); (W.-H.H.); (S.-Y.W.); (B.-Y.W.)
- Genome and Systems Biology Degree Program, Academia Sinica and National Taiwan University, Taipei 106, Taiwan
| | - Wei-Hsiang Hsu
- Graduate Program of Nutrition Science, School of Life Science, National Taiwan Normal University, Taipei 116, Taiwan; (H.-H.T.); (W.-H.H.); (S.-Y.W.); (B.-Y.W.)
| | - Shan-Ying Wu
- Graduate Program of Nutrition Science, School of Life Science, National Taiwan Normal University, Taipei 116, Taiwan; (H.-H.T.); (W.-H.H.); (S.-Y.W.); (B.-Y.W.)
- Department of Microbiology and Immunology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Starkville, MS 39762, USA;
| | - Bao-Yuan Wang
- Graduate Program of Nutrition Science, School of Life Science, National Taiwan Normal University, Taipei 116, Taiwan; (H.-H.T.); (W.-H.H.); (S.-Y.W.); (B.-Y.W.)
| | - Chun-Li Su
- Department of Human Development and Family Studies, National Taiwan Normal University, Taipei 106, Taiwan;
- Graduate Program of Nutrition Science, School of Life Science, National Taiwan Normal University, Taipei 116, Taiwan; (H.-H.T.); (W.-H.H.); (S.-Y.W.); (B.-Y.W.)
- Correspondence: ; Tel.: +886-2-7749-1436; Fax: +886-2-2931-2904
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Cao L, Pechan T, Lee S, Cheng WH. Identification of Selenoprotein H Isoforms and Impact of Selenoprotein H Overexpression on Protein But Not mRNA Levels of 2 Other Selenoproteins in 293T Cells. J Nutr 2021; 151:3329-3338. [PMID: 34510207 PMCID: PMC9034323 DOI: 10.1093/jn/nxab290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 06/16/2021] [Accepted: 08/06/2021] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Selenoprotein H (SELONOH), a member of the thioredoxin-like family proteins, is prioritized to degradation in selenium (Se) insufficiency. Recent studies implicate protective roles of SELENOH in oxidative stress, cellular senescence, and intestinal tumorigenesis. Although the nonselenoprotein H0YE28 is suggested as shortened SELENOH according to genomic and proteomic data repositories, this variant has not been verified biochemically. OBJECTIVES We sought to identify SELENOH isoforms and explore the impact of Se flux on selenoprotein expression in SELENOH-overexpressing cells. METHODS A vector expressing a FLAG (the DYKDDDDK sequence) tag on the N-terminal end of wild-type SELENOH was constructed and transiently transfected into 293T cells incubated with graded concentrations of Na2SeO3 (0-200 nM). Cells were subjected to immunoprecipitation, LC-MS/MS protein analysis, immunoblotting, qRT-PCR, and senescence assays. Data were analyzed by 1-way or 2-way ANOVA. RESULTS Results of anti-FLAG immunoblotting showed that FLAG-SELENOH transfection increased (3.7-fold; P < 0.05) protein levels of the long, but not the short, SELENOH variants in the presence of Na2SeO3 (100 nM). By contrast, SELENOH mRNA levels were increased by 53-fold upon FLAG-SELENOH transfection but were comparable with or without supplemental Se (100 nM). LC-MS/MS analyses of anti-FLAG immunoprecipitates designated both anti-FLAG bands as SELENOH and co-identified three 60S ribosomal and 9 other proteins. Overexpression of FLAG-SELENOH 1) reduced glutathione peroxidase 1 and thioredoxin reductase 1 expression at the protein rather than the mRNA level in the absence but not presence of supplemental Se (100 nM; P < 0.05); 2) increased mRNA levels of 3 heat shock proteins (HSP27, HSP70-1A, and HSP70-1B; P < 0.05); and 3) reduced senescence induced by H2O2 (20 μM, 4 hours; P < 0.05). CONCLUSIONS These cellular studies demonstrate a Se-independent, shortened SELENOH variant and suggest competition of overexpressed FLAG-SELENOH with 2 other selenoproteins for the expression at the protein but not the mRNA level in Se insufficiency.
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Affiliation(s)
- Lei Cao
- Departments of Food Science, Nutrition, and Health Promotion, Mississippi
State University, Mississippi State, MS, USA,Institute of Marine Life Science, Pukyong National
University, Busan, Republic
of Korea
| | - Tibor Pechan
- Institute for Genomics, Biocomputing and Biotechnology, Mississippi State
University, Mississippi State, MS, USA
| | - Sanggil Lee
- Department of Food Science and Nutrition, Pukyong National
University, Busan, Republic
of Korea
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Zeng H, Safratowich B, Cheng WH, Claycombe-Larson K, Briske-Anderson M. Deoxycholic Acid Modulates Cell-Junction Gene Expression and Increases Intestinal Barrier Dysfunction in Caco-2 Cell Monolayers. Curr Dev Nutr 2021. [DOI: 10.1093/cdn/nzab050_023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Objectives
Diet-related obesity is associated with an increased risk of developing intestinal hyperpermeability. High dietary fat intake causes an increase in colonic bile acids (BAs), particularly deoxycholic acid (DCA, secondary BA), which may disrupt the intestinal epithelial barrier. To determine the potential role of bile acids in barrier dysfunction, we hypothesize that DCA modulates the gene expression in multiple cell junction pathways and increases intestinal permeability.
Methods
With a Caco-2 cell intestinal barrier model, we used cell proliferation, PCR array, biochemical, western blotting and immunofluorescent assays to examine the impact of DCA on the integrity of intestinal barrier and gene expression.
Results
Human intestinal Caco-2 cells were grown in monolayers and challenged with DCA at physiological concentrations (sub mM levels). DCA increased transcellular and paracellular permeability (>30%) via transepithelial electrical resistance and phenol red flux measurements. Similarly, DCA increased intracellular reactive oxidative species production (>1-fold) and accompanied a modification of cellular p38 and ERK1/2 signaling pathways. Further characterization of underlying genes related to epithelial barrier with PCR array analysis identified that 23 genes (in tight junction, focal adhesion, gap junction and adhere junction pathways) were decreased at least 40% in (0.25 mM) DCA-treated Caco-2 cells when compared to untreated cells. Finally, we demonstrated that DCA decreased the protein levels of occludin gene at both cellular tight junction and nucleus in epithelial cells.
Conclusions
Collectively, our data suggest that at physiological concentrations, DCA alters the gene expression of multiple pathways related to cell junctions and increases permeability in a Caco-2 intestinal barrier model. These molecular events may represent the underlying mechanistic pathways that are responsible for DCA-induced transcellular and paracellular permeation.
Funding Sources
This work was supported by U.S. Department of Agriculture, Agricultural Research Service, research project 3062-51,000-056–00D.
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Affiliation(s)
- Huawei Zeng
- USDA ARS Grand Forks Human Nutrition Research Center
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Affiliation(s)
- Wen-Hsing Cheng
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Mississippi State, MS, USA
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12
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Huang YC, Wu TL, Zeng H, Cheng WH. Dietary Selenium Requirement for the Prevention of Glucose Intolerance and Insulin Resistance in Middle-Aged Mice. J Nutr 2021; 151:1894-1900. [PMID: 33830273 PMCID: PMC8502482 DOI: 10.1093/jn/nxab053] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/15/2020] [Accepted: 02/11/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Although dietary selenium (Se) deficiency or excess induces type 2 diabetes-like symptoms in mice, suboptimal body Se status usually causes no symptoms but may promote age-related decline in overall health. OBJECTIVES We sought to determine the dietary Se requirement for protection against type 2 diabetes-like symptoms in mice. METHODS Thirty mature (aged 4 mo) male C57BL/6J mice were fed a Se-deficient torula yeast AIN-93M diet supplemented with Na2SeO4 in graded concentrations totaling 0.01 (basal), 0.04, 0.07, 0.10, and 0.13 (control) mg Se/kg for 4 mo (n = 6) until they were middle-aged (8 mo). Droplets of whole blood were used to determine glucose tolerance and insulin sensitivity in the mice from ages 5 to 8 mo. Postmortem serum, liver, and skeletal muscle were collected to assay for selenoprotein expression and markers of glucose metabolism. Data were analyzed by 1-way ANCOVA with or without random effects for time-repeated measurements using live mice or postmortem samples, respectively. RESULTS Compared with control, the consumption of basal diet increased (P < 0.05) fasting serum insulin (95% CI: 52%, 182%) and leptin (95% CI: 103%, 118%) concentrations in middle-aged mice. Dietary Se insufficiency decreased (P < 0.05) 1) glucose tolerance (13-79%) and insulin sensitivity (15-65%) at ≤0.10 mg Se/kg; 2) baseline thymoma viral proto-oncogene phosphorylation on S473 (27-54%) and T308 (22-46%) at ≤0.10 and ≤0.07 mg Se/kg, respectively, in the muscle but not the liver; and 3) serum glutathione peroxidase 3 (51-83%), liver and muscle glutathione peroxidase 1 (32-84%), serum and liver selenoprotein P (28-42%), and liver and muscle selenoprotein H (39-48%) and selenoprotein W (16-73%) protein concentrations at ≤0.04, ≤0.10, ≤0.07, and ≤0.10 mg Se/kg, respectively. CONCLUSIONS Mice fed diets containing ≤0.10 mg Se/kg display impaired glucose tolerance and insulin sensitivity, suggesting increased susceptibility to type 2 diabetes by suboptimal Se status at levels ≤23% of nutritional needs.
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Affiliation(s)
- Ying-Chen Huang
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Mississippi State, MS, USA
| | - Tung-Lung Wu
- Department of Mathematics and Statistics, Mississippi State University, Mississippi State, MS, USA
| | - Huawei Zeng
- Grand Forks Human Nutrition Center, Agricultural Research Service, USDA, Grand Forks, ND, USA
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Cheng WH. Placental Telomere Length: Linking Maternal Nutrition to Transgenerational Healthy Aging? J Nutr 2020; 150:2619-2620. [PMID: 32939537 DOI: 10.1093/jn/nxaa277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/14/2020] [Accepted: 08/18/2020] [Indexed: 11/13/2022] Open
Affiliation(s)
- Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, USA
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Zeng H, Hamlin SK, Safratowich BD, Cheng WH, Johnson LK. Superior inhibitory efficacy of butyrate over propionate and acetate against human colon cancer cell proliferation via cell cycle arrest and apoptosis: linking dietary fiber to cancer prevention. Nutr Res 2020; 83:63-72. [PMID: 33017771 DOI: 10.1016/j.nutres.2020.08.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 08/07/2020] [Accepted: 08/17/2020] [Indexed: 12/13/2022]
Abstract
Intake of dietary fiber may protect against colon cancer. The anticancer property is associated with an increased production of short chain fatty acids (SCFAs), including acetate, propionate and butyrate, during dietary fiber fermentation in the colon. However, the mechanisms remain to be determined. We hypothesized that butyrate exhibits a stronger inhibitory potential against colon cancer cell proliferation compared with acetate and propionate. We determined the half maximal inhibitory concentrations (IC50) of SCFAs in HCT116 human colon cancer cell proliferation by examining cell growth curves. At 24- and 48-hour time points, IC50 (mmol/L) concentrations of acetate, propionate, and butyrate were [66.0 and 29.0], [9.2 and 3.6], and [2.5 and 1.3], respectively. Consistent with the greater anti-proliferative effect, butyrate exhibits >3-fold stronger potential for inducing cell cycle arrest at the G2 phase with a drop in S-phase fraction (including c-Myc/p21 signaling) and apoptosis when compared with acetate and propionate. Subsequently, we focused on the effect of butyrate on apoptotic gene expression. Using a PCR array analysis, we identified 17 pro-apoptotic genes, 6 anti-apoptotic genes, and 4 cellular mediator genes with >1-fold increase or decrease in mRNA levels out of 93 apoptosis related genes in butyrate-treated HCT116 cells when compared with untreated HCT116 cells. These genes were mainly involved in the TNF, NFκB, CARD, and BCL-2 regulated pathways. Taken together, our data indicate a greater inhibitory efficacy of butyrate over propionate and acetate against human colon cancer cell proliferation via cell cycle arrest and apoptosis.
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Affiliation(s)
- Huawei Zeng
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203.
| | - Stephanie K Hamlin
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203
| | - Bryan D Safratowich
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, 39762
| | - LuAnn K Johnson
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203
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15
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Huang YC, Cheng WH. Minimum Dietary Selenium Requirement to Prevent Type 2 Diabetes in Mice. Curr Dev Nutr 2020. [DOI: 10.1093/cdn/nzaa067_038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Objectives
Classic selenium (Se) deficiency syndromes are rare in the United States, but individuals with sub-optimal body Se status free of symptoms may be prone to certain chronic diseases such as diabetes if the condition is sustained. In-depth analyses of the National Health and Nutrition Examination Survey estimate that mortality rate is increased when serum Se is < 105.8 μg/L, suggesting that Se status in 10% or 15.5 million Americans aged 40 or older might be sub-optimal. Nonetheless, previous mouse studies show that both dietary selenium deficiency and in excess can promote type 2 diabetes. In this study, we determined the minimally required intake of dietary Se for prevention of type 2 diabetes-like phenotype in mice.
Methods
Male C57BL/6 J mice at 4 months of age were fed a modified AIN-93 M Se(-) diet containing 24% Torula yeast or the basal diet (0.0072 Se/kg) added with sodium selenate (0.03, 0.06, 0.09, and 0.12 mg Se/kg) for 4 months (n = 6 per group). Glucose tolerance and insulin sensitivity were determined at 5, 6 and 8 months of age. Blood, liver, pancreas and muscle were collected at 8 months of age for biochemical analysis.
Results
Compared to the Se-adequate diet added with 0.12 mg Se/kg, mice on the Se(-) diet showed increased (P < 0.05) body weight at 7–8 months of age and mice on the Se(-) diet added with 0, 0.03 or 0.06 but not 0.09 mg Se/kg displayed glucose intolerance and insulin resistance in a temporal manner. Results of Western analyses showed that levels of serum glutathione peroxidase 3 and muscle AKT phosphorylation on Ser-473 and Thr-308 were decreased (P < 0.05) in mice on the diets added with 0–0.09 mg Se/kg.
Conclusions
Collectively, we show that mature mice on Se-insufficient diet at levels lower than 0.09 mg Se/kg for 4 months display sub-optimal body Se status and develop type 2 diabetes-like phenotype.
Funding Sources
NIH.
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16
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Zeng H, Hamlin S, Safratowich B, Cheng WH, Johnson L. Superior Inhibitory Efficacy of Butyrate over Propionate and Acetate Against Human Colon Cancer Cell Proliferation via Cell Cycle Arrest and Apoptosis. Curr Dev Nutr 2020. [DOI: 10.1093/cdn/nzaa044_063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Objectives
Intake of fiber has beneficial properties for gut health. These effects may be due to the increased production of short chain fatty acids (SCFAs) such as acetate, propionate and butyrate during dietary fiber fermentation in the colon. We tested the hypothesis that butyrate exhibits a stronger inhibitory potential against colon cancer cell proliferation compared with acetate and propionate.
Methods
With a human HCT116 colon cancer cell culture model, we used cell cycle, apoptosis, PCR array, biochemical, western blotting and immunofluorescent assays to determine SCFAs’ inhibitory effects on HCT116 cell proliferation.
Results
We determined the half maximal inhibitory concentrations (IC50) of SCFAs in HCT116 cell proliferation by examining cell growth curves. At 24- and 48- hour time points, IC50 (mM) concentrations of acetate, propionate and butyrate were [66.0 and 29.0], [9.2 and 3.6] and [2.5 and 1.3], respectively. Consistent with the greater anti-proliferative effect, butyrate exhibits >3-fold stronger potential for inducing cell cycle arrest (including c-Myc/p21 signaling) and apoptosis when compared with acetate and propionate. Subsequently, we focused on the effect of butyrate on apoptotic gene expression. Using a PCR array analysis, we identified 17 pro-apoptotic genes, 6 anti-apoptotic genes, and 4 cellular mediator genes with >1-fold increase or decrease in mRNA levels out of 93 apoptosis related genes in butyrate-treated HCT116 cells when compared with untreated HCT116 cells. These genes were mainly involved in the tumor necrosis factor alpha receptor, NFκB, caspase recruitment domain-containing protein and B-cell lymphoma-2 regulated pathways.
Conclusions
Collectively, we demonstrated a greater inhibitory efficacy of butyrate over propionate and acetate against human colon cancer cell proliferation via cell cycle arrest and apoptosis.
Funding Sources
This work was supported by U.S. Department of Agriculture, Agricultural Research Service, research project 3062–51,000-056–00D.
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Zeng H, Larson KJ, Cheng WH, Bukowski MR, Safratowich BD, Liu Z, Hakkak R. Advanced liver steatosis accompanies an increase in hepatic inflammation, colonic, secondary bile acids and Lactobacillaceae/Lachnospiraceae bacteria in C57BL/6 mice fed a high-fat diet. J Nutr Biochem 2020; 78:108336. [PMID: 32004929 DOI: 10.1016/j.jnutbio.2019.108336] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 10/30/2019] [Accepted: 12/20/2019] [Indexed: 02/07/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disease in Western countries, and the gut-liver axis is implicated in liver disease pathogenesis. We hypothesize that advanced liver steatosis accompanies an increase in hepatic inflammation, colonic secondary bile acids (BAs) and secondary BA-producing bacteria in mice fed a high-fat (HF) diet model of obesity. Four-week old male C57BL/6 mice were fed an HF (45% energy) or a low-fat (LF) (10% energy) diet for 21 weeks. At the end of the study, body weight and body fat percentage in the HF group were 0.23- and 0.41-fold greater than those in the LF group, respectively. Similarly, the HF group exhibited an increase in hepatic lipid droplets, inflammatory cell infiltration, inducible nitric oxide synthase, and hepatocellular ballooning (but without hepatic Mallory bodies) which are key histological features of advanced hepatic steatosis. Furthermore, RNA sequencing, qPCR and immunohistological methods found that nicotinamide n-methyltransferase and selenoprotein P, two inflammation-related hepatic genes, were upregulated in the HF group. Consistent with the hepatic inflammation, the levels of proinflammatory plasma-cytokines (TNF-α and IL6), colonic secondary BAs (LCA, DCA) and secondary BA producing bacteria (e.g., lactobacillaceae/Lachnospiraceae) were at least 0.5-fold greater in the HF group compared with the LF group. Taken together, the data demonstrate that advanced liver-steatosis is concurrent with an elevated level of hepatic inflammation, colonic secondary bile acids and their associated bacteria in mice fed an HF diet. These data suggest a potential gut-liver crosstalk at the stage of advanced liver-steatosis.
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Affiliation(s)
- Huawei Zeng
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203.
| | - Kate J Larson
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, 39762
| | - Michael R Bukowski
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203
| | - Bryan D Safratowich
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203
| | - Zhenhua Liu
- School of Public Health and Health Science, University of Massachusetts, Amherst, MA 01003
| | - Reza Hakkak
- Departments of Dietetics and Nutrition, University of Arkansas for Medical Sciences, Little Rock, AR, 72205; Arkansas Children Research Institute, Little Rock, AR, 72202
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18
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Shao ZQ, Zhang X, Fan HH, Wang XS, Wu HM, Zhang L, Cheng WH, Zhu JH. Selenoprotein T Promotes Proliferation and G1-to-S Transition in SK-N-SH Cells: Implications in Parkinson's Disease. J Nutr 2019; 149:2110-2119. [PMID: 31504723 DOI: 10.1093/jn/nxz199] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/21/2019] [Accepted: 07/25/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Selenium is prioritized to the brain mainly for selenoprotein expression. Selenoprotein T (SELENOT) protects dopaminergic, postmitotic neurons in a mouse model of Parkinson's disease (PD). OBJECTIVE We hypothesized a proliferative role of SELENOT in neural cells. METHODS To assess SELENOT status in PD, sedated male C57BL/6 mice at 10-12 wk of age were injected with 6-hydroxydopamine in neurons, and human peripheral blood mononuclear cells were isolated from 9 healthy subjects (56% men, 68-y-old) and 11 subjects with PD (64% men, 63-y-old). Dopaminergic neural progenitor-like SK-N-SH cells with transient SELENOT overexpression or knockdown were maintained in the presence or absence of the antioxidant N-acetyl-l-cysteine and the calcium channel blocker nimodipine. Cell cycle, proliferation, and signaling parameters were determined by immunoblotting, qPCR, and flow cytometry. RESULTS SELENOT mRNA abundance was increased (P < 0.05) in SK-N-SH cells treated with 1-methyl-4-phenylpyridinium iodide (3.5-fold) and peripheral blood mononuclear cells from PD patients (1.6-fold). Likewise, SELENOT was expressed in tyrosine hydroxylase-positive dopaminergic neurons of 6-hydroxydopamine-injected mice. Knockdown of SELENOT in SK-N-SH cells suppressed (54%; P < 0.05) 5-ethynyl-2'-deoxyuridine incorporation but induced (17-47%; P < 0.05) annexin V-positive cells, CASPASE-3 cleavage, and G1/S cell cycle arrest. SELENOT knockdown and overexpression increased (88-120%; P < 0.05) and reduced (37-42%; P < 0.05) both forkhead box O3 and p27, but reduced (51%; P < 0.05) and increased (1.2-fold; P < 0.05) cyclin-dependent kinase 4 protein abundance, respectively. These protein changes were diminished by nimodipine or N-acetyl-l-cysteine treatment (24 h) at steady-state levels. While the N-acetyl-l-cysteine treatment did not influence the reduction in the amount of calcium (13%; P < 0.05) by SELENOT knockdown, the nimodipine treatment reversed the decreased amount of reactive oxygen species (33%; P < 0.05) by SELENOT overexpression. CONCLUSIONS These cellular and mouse data link SELENOT to neural proliferation, expanding our understanding of selenium protection in PD.
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Affiliation(s)
- Zi-Qiang Shao
- Department of Geriatrics and Neurology, the Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China.,Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China.,Department of Critical Care Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Xiong Zhang
- Department of Geriatrics and Neurology, the Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Hui-Hui Fan
- Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiao-Shuang Wang
- Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Hong-Mei Wu
- Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Li Zhang
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, USA.,Department of Poultry Science, Mississippi State University, Mississippi State, MS, USA
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, USA
| | - Jian-Hong Zhu
- Department of Geriatrics and Neurology, the Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China.,Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
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Affiliation(s)
- Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, USA.
| | - K Sandeep Prabhu
- Department of Veterinary and Biomedical Sciences and The Penn State Cancer Institute, The Pennsylvania State University, University Park, PA, USA.
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Cheng WH. Green Tea: An Ancient Antioxidant Drink for Optimal Health? J Nutr 2019; 149:1877-1879. [PMID: 31498400 DOI: 10.1093/jn/nxz187] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 07/08/2019] [Accepted: 07/17/2019] [Indexed: 12/29/2022] Open
Affiliation(s)
- Wen-Hsing Cheng
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Mississippi State, MS, USA
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21
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Cheng WH, Cheng WH. Genome Maintenance by Selenoprotein H in the Nucleolus (OR11-03-19). Curr Dev Nutr 2019. [DOI: 10.1093/cdn/nzz044.or11-03-19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Zeng H, Larson K, Cheng WH, Bukowski M, Safratowich B, Hakkak R. Advanced Liver Steatosis Accompanies an Increase in the Level of Colonic Pro-inflammatory Bile Acids and Hepatic Inflammation in C57BL/6 Mice Fed a High-fat Diet (P15-027-19). Curr Dev Nutr 2019. [DOI: 10.1093/cdn/nzz037.p15-027-19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Objectives
The gut-liver axis is implicated in the pathogenesis of liver diseases; however, the mechanistic link between the gut and fatty liver disease severity remains to be characterized. We tested the hypothesis that advanced liver-steatosis accompanies an increase in the concentrations of colonic proinflammatory bile acids and hepatic inflammation in mice fed a high fat (HF) diet.
Methods
Four-week-old male C57BL/6 mice (n = 14/group) were fed a HF (45% energy fat) or a low-fat (LF) (10% energy fat) diet for 21 wks. We used biochemical, immunohistological, gas & liquid chromatography with mass spectrometry, RNA sequencing and real-time PCR methods to examine the level of colonic proinflammatory bile acids and hepatic inflammation.
Results
At the end of the study, body weight and body fat percentage in the HF group were 0.23- and 0.41- fold greater than the LF group, respectively. Compared with the LF group, the HF group exhibited an increase in hepatic lipid droplets, inflammatory cell infiltration, inducible nitric oxide synthase, and hepatocellular ballooning cells (without hepatic Mallory bodies) which are key histological features of advanced hepatic steatosis. Furthermore, nicotinamide n-methyltransferase and selenoprotein P, two hepatic proinflammation-related genes, were upregulated in the HF group. With unique colonic bile acid profiles, the levels of colonic hydrophobic (secondary) bile acids (lithocholic acids and deoxycholic acids) were at least 0.5- fold greater in the HF group compared with the LF group. It is known that these hydrophobic bile acids induce proinflammatory cytokine production (TNF-α and IL-6) in the colon, and exacerbate hepatic inflammation via portal venous circulation. This potential colon-liver axis is consistent with results that the plasma concentrations of TNF-α and IL-6 were 0.5-fold greater in the HF group compared the LF group.
Conclusions
Our results demonstrate that advanced liver-steatosis accompanies an increase in colonic proinflammatory bile acid levels and hepatic inflammation, which suggests a cross-talk between colon and liver in mice fed a HF diet.
Funding Sources
This work was funded by the US Department of Agriculture, Agricultural Research Service, CRIS project 3062-51000-050-00D.
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Zhang X, Liu RP, Cheng WH, Zhu JH. Prioritized brain selenium retention and selenoprotein expression: Nutritional insights into Parkinson's disease. Mech Ageing Dev 2019; 180:89-96. [PMID: 30998939 DOI: 10.1016/j.mad.2019.04.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/27/2019] [Accepted: 04/14/2019] [Indexed: 01/12/2023]
Abstract
Selenium (Se), an essential trace mineral, confers its physiological functions mainly through selenoproteins, most of which are oxidoreductases. Results from animal, epidemiological, and human genetic studies link Parkinson's disease to Se and certain selenoproteins. Parkinson's disease is characterized by multiple motor and non-motor symptoms that are difficult to diagnose at early stages of the pathogenesis. While irreversible, degenerative and age-related, the onset of Parkinson's disease may be delayed through proper dietary and environmental controls. One particular attribute of Se biology is that brain has the highest priority to receive and retain this nutrient even in Se deficiency. Thus, brain Se deficiency is rare; however, a strong body of recent evidence implicates selenoprotein dysfunction in Parkinson's disease. Direct and indirect evidence from mouse models implicate selenoprotein T, glutathione peroxidase 1, selenoprotein P and glutathione peroxidase 4 in counteracting Parkinson's disease through Se transportation to the brain and reduced oxidative stress. It is of future interest to further characterize the full selenoproteomes in various types of brain cells and elucidate the mechanism of their actions in Parkinson's disease.
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Affiliation(s)
- Xiong Zhang
- Department of Geriatrics and Neurology, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Rong-Pei Liu
- Department of Geriatrics and Neurology, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China; Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, USA
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, USA.
| | - Jian-Hong Zhu
- Department of Geriatrics and Neurology, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China; Department of Preventive Medicine, School of Public Health, Wenzhou Medical University, Wenzhou, Zhejiang, China.
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Zhang L, Zhu JH, Zhang X, Cheng WH. The Thioredoxin-Like Family of Selenoproteins: Implications in Aging and Age-Related Degeneration. Biol Trace Elem Res 2019; 188:189-195. [PMID: 30229511 DOI: 10.1007/s12011-018-1521-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 09/10/2018] [Indexed: 01/01/2023]
Abstract
The thioredoxin-like (Rdx) family proteins contain four selenoproteins (selenoprotein H, SELENOH; selenoprotein T, SELENOT; selenoprotein V, SELENOV; selenoprotein W, SELENOW) and a nonselenoprotein Rdx12. They share a CxxU or a CxxC (C, cysteine; x, any amino acid; U, selenocysteine) motif and a stretch of eGxFEI(V) sequence. From the evolutionary perspective, SELENOW and SELENOV are clustered together and SELENOH and SELENOT are in another branch. Selenoproteins in the Rdx family exhibit tissue- and organelle-specific distribution and are differentially influenced in response to selenium deficiency. While SELENOH is nucleus-exclusive, SELENOT resides mainly in endoplasmic reticulum and SELENOW in cytosol. SELENOV is expressed essentially only in the testes with unknown cellular localization. SELENOH and SELENOW are more sensitive than SELENOT and SELENOV to selenium deficiency. While physiological functions of the Rdx family of selenoproteins are not fully understand, results from animal models demonstrated that (1) brain-specific SELENOT knockout mice are susceptible to 1-methyl-4-phenylpyridinium-induced Parkinson's disease in association with redox imbalance and (2) adult zebrafishes with heterozygous SELENOH knockout are prone to dimethylbenzanthracene-induced tumorigenesis together with increased DNA damage and oxidative stress. Further animal and human studies are needed to fully understand physiological roles of the Rdx family of selenoproteins in redox regulation, genome maintenance, aging, and age-related degeneration.
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Affiliation(s)
- Li Zhang
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, 39762, USA
- Department of Poultry Science, Mississippi State University, Mississippi State, MS, 39762, USA
| | - Jian-Hong Zhu
- Department of Preventive Medicine, School of Public Health, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
- Department of Geriatrics and Neurology, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Xiong Zhang
- Department of Geriatrics and Neurology, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, 39762, USA.
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Zhang L, Zeng H, Cheng WH. Beneficial and paradoxical roles of selenium at nutritional levels of intake in healthspan and longevity. Free Radic Biol Med 2018; 127:3-13. [PMID: 29782991 DOI: 10.1016/j.freeradbiomed.2018.05.067] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 05/15/2018] [Accepted: 05/17/2018] [Indexed: 11/15/2022]
Abstract
Accumulation of genome and macromolecule damage is a hallmark of aging, age-associated degeneration, and genome instability syndromes. Although processes of aging are irreversible, they can be modulated by genome maintenance pathways and environmental factors such as diet. Selenium (Se) confers its physiological functions mainly through selenoproteins, but Se compounds and other proteins that incorporate Se nonspecifically also impact optimal health. Bruce Ames proposed that the aging process could be mitigated by a subset of low-hierarchy selenoproteins whose levels are preferentially reduced in response to Se deficiency. Consistent with this notion, results from two selenotranscriptomic studies collectively implicate three low-hierarchy selenoproteins in age or senescence. Experimental evidence generally supports beneficial roles of selenoproteins in the protection against damage accumulation and redox imbalance, but some selenoproteins have also been reported to unexpectedly display harmful functions under sporadic conditions. While longevity and healthspan are usually thought to be projected in parallel, emerging evidence suggests a trade-off between longevity promotion and healthspan deterioration with damage accumulation. We propose that longevity promotion under conditions of Se deficiency may be attributed to 1) stress-response hormesis, an advantageous event of resistance to toxic chemicals at low doses; 2) reduced expression of selenoproteins with paradoxical functions to a lesser extent. In particular, selenoprotein H is an evolutionally conserved nuclear selenoprotein postulated to confer Se functions in redox regulation, genome maintenance, and senescence. This review highlights the need to pinpoint roles of specific selenoproteins and Se compounds in healthspan and lifespan for a better understanding of Se contribution at nutritional levels of intake to healthy aging.
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Affiliation(s)
- Li Zhang
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, MS 39762, USA
| | - Huawei Zeng
- USDA, Agricultural Research Service, Grand Forks Human Nutrition Center, Grand Forks, ND 58202, USA
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, MS 39762, USA.
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Lu HY, Zeng H, Zhang L, Porres JM, Cheng WH. Fecal fermentation products of common bean-derived fiber inhibit C/EBPα and PPARγ expression and lipid accumulation but stimulate PPARδ and UCP2 expression in the adipogenesis of 3T3-L1 cells. J Nutr Biochem 2018; 60:9-15. [DOI: 10.1016/j.jnutbio.2018.06.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 05/22/2018] [Accepted: 06/06/2018] [Indexed: 12/19/2022]
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Lai JM, Zhang X, Liu FF, Yang R, Li SY, Zhu LB, Zou M, Cheng WH, Zhu JH. Redox-sensitive MAPK and Notch3 regulate fibroblast differentiation and activation: a dual role of ERK1/2. Oncotarget 2018; 7:43731-43745. [PMID: 27248323 PMCID: PMC5190056 DOI: 10.18632/oncotarget.9667] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Accepted: 05/12/2016] [Indexed: 11/25/2022] Open
Abstract
Myofibroblastic transformation, characterized by upregulation of α-smooth muscle actin in response to proï¬brotic agents such as TGF-β1, is considered as a major event leading to ï¬brosis. The mechanistic basis linking myoï¬broblast differentiation to idiopathic pulmonary ï¬brosis and the disease treatment remain elusive. In this study, we studied roles of MAPK, Notch, and reactive oxygen species (ROS) during the differentiation of IMR-90 lung fibroblasts at basal level and induced by TGF-β1. Our results demonstrated that ROS-dependent activation of p38, JNK1/2 and Notch3 promoted basal and TGF-β1-induced differentiation and expression of extracellular matrix proteins. In stark contrast, ERK1/2 was suppressed by ROS and exhibited an inhibitory effect on the differentiation but showed a weak promotion on the expression of extracellular matrix proteins. TGF-β1-induced Notch3 expression depended on p38 and JNK1/2. Interestingly, Notch3 was also downstream of ERK1/2, suggesting a complex role of ERK1/2 in lung function. Our results suggest a novel ROS-mediated shift of dominance from the inhibitory ERK1/2 to the stimulatory p38, JNK1/2 and Notch3 during the pathological progression of IPF. Thus, targeting ERK1/2 signaling for activation and p38, JNK1/2 and Notch3 for inhibition may be of clinical potential against lung fibrosis.
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Affiliation(s)
- Jun-Mei Lai
- Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.,Department of Geriatrics and Neurology, the Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.,Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, China
| | - Xiong Zhang
- Department of Geriatrics and Neurology, the Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Fang-Fang Liu
- Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Rui Yang
- Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Shen-Yu Li
- Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Lan-Bing Zhu
- Department of Geriatrics and Neurology, the Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Ming Zou
- Department of Geriatrics and Neurology, the Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, 39762, USA
| | - Jian-Hong Zhu
- Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.,Department of Geriatrics and Neurology, the Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.,Key Laboratory of Watershed Science and Health of Zhejiang Province, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
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Dhowlaghar N, Abeysundara PDA, Nannapaneni R, Schilling MW, Chang S, Cheng WH, Sharma CS. Growth and Biofilm Formation by Listeria monocytogenes in Catfish Mucus Extract on Four Food Contact Surfaces at 22 and 10°C and Their Reduction by Commercial Disinfectants. J Food Prot 2018; 81:59-67. [PMID: 29257728 DOI: 10.4315/0362-028x.jfp-17-103] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The objective of this study was to determine the effect of strain and temperature on growth and biofilm formation by Listeria monocytogenes in high and low concentrations of catfish mucus extract on various food contact surfaces at 10 and 22°C. The second objective of this study was to evaluate the efficacy of disinfectants at recommended concentrations and contact times for removing L. monocytogenes biofilm cells from a stainless steel surface covered with catfish mucus extract. Growth and biofilm formation of all L. monocytogenes strains increased with higher concentrations of catfish mucus extract at both 10 and 22°C. When 15 μg/mL catfish mucus extract was added to 3 log CFU/mL L. monocytogenes, the biofilm levels of L. monocytogenes on stainless steel reached 4 to 5 log CFU per coupon at 10°C and 5 to 6 log CFU per coupon at 22°C in 7 days. With 375 μg/mL catfish mucus extract, the biofilm levels of L. monocytogenes on stainless steel reached 5 to 6 log CFU per coupon at 10°C and 6 to 7.5 log CFU per coupon at 22°C in 7 days. No differences ( P > 0.05) were observed between L. monocytogenes strains tested for biofilm formation in catfish mucus extract on the stainless steel surface. The biofilm formation by L. monocytogenes catfish isolate HCC23 was lower on Buna-N rubber than on stainless steel, polyethylene, and polyurethane surfaces in the presence of catfish mucus extract ( P < 0.05). Contact angle analysis and atomic force microscopy confirmed that Buna-N rubber was highly hydrophobic, with lower surface energy and less roughness than the other three surfaces. The complete reduction of L. monocytogenes biofilm cells was achieved on the stainless steel coupons with a mixture of disinfectants, such as quaternary ammonium compounds with hydrogen peroxide or peracetic acid with hydrogen peroxide and octanoic acid at 25 or 50% of the recommended concentration, in 1 or 3 min compared with use of the quaternary ammonium compounds, chlorine, or acid disinfectants alone, which were ineffective for removing all the L. monocytogenes biofilm cells.
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Affiliation(s)
- Nitin Dhowlaghar
- 1 Department of Food Science, Nutrition and Health Promotion and
| | | | | | - Mark W Schilling
- 1 Department of Food Science, Nutrition and Health Promotion and
| | - Sam Chang
- 1 Department of Food Science, Nutrition and Health Promotion and
| | - Wen-Hsing Cheng
- 1 Department of Food Science, Nutrition and Health Promotion and
| | - Chander S Sharma
- 2 Department of Poultry Science, Mississippi State University, Mississippi State, Mississippi 39762, USA
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Cao L, Zhang L, Zeng H, Wu RT, Wu TL, Cheng WH. Analyses of Selenotranscriptomes and Selenium Concentrations in Response to Dietary Selenium Deficiency and Age Reveal Common and Distinct Patterns by Tissue and Sex in Telomere-Dysfunctional Mice. J Nutr 2017; 147:1858-1866. [PMID: 28855418 DOI: 10.3945/jn.117.247775] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 02/14/2017] [Accepted: 08/07/2017] [Indexed: 11/14/2022] Open
Abstract
Background: The hierarchies of tissue selenium distribution and selenotranscriptomes are thought to critically affect healthspan and longevity.Objective: We determined selenium status and selenotranscriptomes in response to long-term dietary selenium deficiency and age in tissues of male and female mice.Methods: Weanling telomerase RNA component knockout C57BL/6 mice were fed a selenium-deficient (0.03 mg Se/kg) Torula yeast-based AIN-93G diet or a diet supplemented with sodium selenate (0.15 mg Se/kg) until age 18 or 24 mo. Plasma, hearts, kidneys, livers, and testes were collected to assay for selenotranscriptomes, selected selenoproteins, and tissue selenium concentrations. Data were analyzed with the use of 2-factor ANOVA (diet × age) in both sexes.Results: Dietary selenium deficiency decreased (P ≤ 0.05) selenium concentrations (65-72%) and glutathione peroxidase (GPX) 3 (82-94%) and selenoprotein P (SELENOP) (17-41%) levels in the plasma of both sexes of mice and mRNA levels (9-68%) of 4, 4, and 12 selenoproteins in the heart, kidney, and liver of males, respectively, and 5, 16, and 14 selenoproteins, respectively, in females. Age increased selenium concentrations and SELENOP levels (27% and 30%, respectively; P ≤ 0.05) in the plasma of males only but decreased (12-46%; P < 0.05) mRNA levels of 1, 5, and 13 selenoproteins in the heart, kidney, and liver of males, respectively, and 6, 5, and 0 selenoproteins, respectively, in females. Among these mRNAs, selenoprotein H (Selenoh), selenoprotein M (Selenom), selenoprotein W (Selenow), methionine-R-sulfoxide reductase 1 (MsrB1), Gpx1, Gpx3, thioredoxin reductase 1 (Txnrd1), Txnrd2, selenoprotein S (Selenos), selenoprotein F (Selenof), and selenoprotein O (Selenoo) responded in parallel to dietary selenium deficiency and age in ≥1 tissue or sex, or both. Dietary selenium deficiency upregulated (40-160%; P ≤ 0.05) iodothyronine deiodinase 2 (Dio2) and selenoprotein N (Selenon) in the kidneys of males. Age upregulated (11-44%; P < 0.05) Selenon in the kidneys of males, selenoprotein K (Selenok) and selenoprotein I (Selenoi) in the kidneys of females, and Selenof and Selenok in the testes.Conclusions: These results illustrate tissue-specific sexual dimorphisms of selenium status and selenotranscriptomes because of dietary selenium deficiency and age.
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Affiliation(s)
- Lei Cao
- Departments of Food Science, Nutrition and Health Promotion and
| | - Li Zhang
- Departments of Food Science, Nutrition and Health Promotion and
| | - Huawei Zeng
- Grand Forks Human Nutrition Center, Agricultural Research Service, USDA, Grand Forks, ND; and
| | - Ryan Ty Wu
- Department of Nutrition and Food Science, University of Maryland, College Park, MD
| | - Tung-Lung Wu
- Mathematics and Statistics, Mississippi State University, Mississippi State, MS
| | - Wen-Hsing Cheng
- Departments of Food Science, Nutrition and Health Promotion and
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30
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Zhao C, Zeng H, Wu RTY, Cheng WH. Loss of Selenium-Binding Protein 1 Decreases Sensitivity to Clastogens and Intracellular Selenium Content in HeLa Cells. PLoS One 2016; 11:e0158650. [PMID: 27404728 PMCID: PMC4942091 DOI: 10.1371/journal.pone.0158650] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 06/20/2016] [Indexed: 12/27/2022] Open
Abstract
Selenium-binding protein 1 (SBP1) is not a selenoprotein but structurally binds selenium. Loss of SBP1 during carcinogenesis usually predicts poor prognosis. Because genome instability is a hallmark of cancer, we hypothesize that SBP1 sequesters cellular selenium and sensitizes cancer cells to DNA-damaging agents. To test this hypothesis, we knocked down SBP1 expression in HeLa cervical cancer cells by employing a short hairpin RNA (shRNA) approach. Reduced sensitivity to hydrogen peroxide, paraquat and camptothecin, reactive oxygen species content, and intracellular retention of selenium after selenomethionine treatment were observed in SBP1 shRNA HeLa cells. Results from Western analyses showed that treatment of HeLa cells with selenomethionine resulted in increased SBP1 protein expression in a dose-dependent manner. Knockdown of SBP1 rendered HeLa cells increased expression of glutathione peroxidase-1 but not glutathione peroxidase-4 protein levels and accelerated migration from a wound. Altogether, SBP1 retains supplemental selenium and sensitizes HeLa cancer cells to clastogens, suggesting a new cancer treatment strategy by sequestering selenium through SBP1.
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Affiliation(s)
- Changhui Zhao
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun, Jilin Province, 130062, China
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland 20742, United States of America
| | - Huawei Zeng
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, North Dakota 58202, United States of America
| | - Ryan T. Y. Wu
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland 20742, United States of America
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition & Health Promotion, Mississippi State University, Mississippi State, Mississippi 39762, United States of America
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31
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Lei XG, Zhu JH, Cheng WH, Bao Y, Ho YS, Reddi AR, Holmgren A, Arnér ESJ. Paradoxical Roles of Antioxidant Enzymes: Basic Mechanisms and Health Implications. Physiol Rev 2016; 96:307-64. [PMID: 26681794 DOI: 10.1152/physrev.00010.2014] [Citation(s) in RCA: 239] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Reactive oxygen species (ROS) and reactive nitrogen species (RNS) are generated from aerobic metabolism, as a result of accidental electron leakage as well as regulated enzymatic processes. Because ROS/RNS can induce oxidative injury and act in redox signaling, enzymes metabolizing them will inherently promote either health or disease, depending on the physiological context. It is thus misleading to consider conventionally called antioxidant enzymes to be largely, if not exclusively, health protective. Because such a notion is nonetheless common, we herein attempt to rationalize why this simplistic view should be avoided. First we give an updated summary of physiological phenotypes triggered in mouse models of overexpression or knockout of major antioxidant enzymes. Subsequently, we focus on a series of striking cases that demonstrate "paradoxical" outcomes, i.e., increased fitness upon deletion of antioxidant enzymes or disease triggered by their overexpression. We elaborate mechanisms by which these phenotypes are mediated via chemical, biological, and metabolic interactions of the antioxidant enzymes with their substrates, downstream events, and cellular context. Furthermore, we propose that novel treatments of antioxidant enzyme-related human diseases may be enabled by deliberate targeting of dual roles of the pertaining enzymes. We also discuss the potential of "antioxidant" nutrients and phytochemicals, via regulating the expression or function of antioxidant enzymes, in preventing, treating, or aggravating chronic diseases. We conclude that "paradoxical" roles of antioxidant enzymes in physiology, health, and disease derive from sophisticated molecular mechanisms of redox biology and metabolic homeostasis. Simply viewing antioxidant enzymes as always being beneficial is not only conceptually misleading but also clinically hazardous if such notions underpin medical treatment protocols based on modulation of redox pathways.
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Affiliation(s)
- Xin Gen Lei
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing,China; Department of Animal Science, Cornell University, Ithaca, New York; Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China; Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, Mississippi; Department of Nutrition, Norwich Medical School, University of East Anglia, Norwich, Norfolk, United Kingdom; Institute of Environmental Health Sciences, Wayne State University, Detroit, Michigan; Georgia Institute of Technology, School of Chemistry and Biochemistry, Parker Petit Institute for Bioengineering and Biosciences, Atlanta, Georgia; and Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Jian-Hong Zhu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing,China; Department of Animal Science, Cornell University, Ithaca, New York; Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China; Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, Mississippi; Department of Nutrition, Norwich Medical School, University of East Anglia, Norwich, Norfolk, United Kingdom; Institute of Environmental Health Sciences, Wayne State University, Detroit, Michigan; Georgia Institute of Technology, School of Chemistry and Biochemistry, Parker Petit Institute for Bioengineering and Biosciences, Atlanta, Georgia; and Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Wen-Hsing Cheng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing,China; Department of Animal Science, Cornell University, Ithaca, New York; Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China; Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, Mississippi; Department of Nutrition, Norwich Medical School, University of East Anglia, Norwich, Norfolk, United Kingdom; Institute of Environmental Health Sciences, Wayne State University, Detroit, Michigan; Georgia Institute of Technology, School of Chemistry and Biochemistry, Parker Petit Institute for Bioengineering and Biosciences, Atlanta, Georgia; and Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Yongping Bao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing,China; Department of Animal Science, Cornell University, Ithaca, New York; Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China; Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, Mississippi; Department of Nutrition, Norwich Medical School, University of East Anglia, Norwich, Norfolk, United Kingdom; Institute of Environmental Health Sciences, Wayne State University, Detroit, Michigan; Georgia Institute of Technology, School of Chemistry and Biochemistry, Parker Petit Institute for Bioengineering and Biosciences, Atlanta, Georgia; and Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Ye-Shih Ho
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing,China; Department of Animal Science, Cornell University, Ithaca, New York; Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China; Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, Mississippi; Department of Nutrition, Norwich Medical School, University of East Anglia, Norwich, Norfolk, United Kingdom; Institute of Environmental Health Sciences, Wayne State University, Detroit, Michigan; Georgia Institute of Technology, School of Chemistry and Biochemistry, Parker Petit Institute for Bioengineering and Biosciences, Atlanta, Georgia; and Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Amit R Reddi
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing,China; Department of Animal Science, Cornell University, Ithaca, New York; Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China; Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, Mississippi; Department of Nutrition, Norwich Medical School, University of East Anglia, Norwich, Norfolk, United Kingdom; Institute of Environmental Health Sciences, Wayne State University, Detroit, Michigan; Georgia Institute of Technology, School of Chemistry and Biochemistry, Parker Petit Institute for Bioengineering and Biosciences, Atlanta, Georgia; and Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Arne Holmgren
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing,China; Department of Animal Science, Cornell University, Ithaca, New York; Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China; Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, Mississippi; Department of Nutrition, Norwich Medical School, University of East Anglia, Norwich, Norfolk, United Kingdom; Institute of Environmental Health Sciences, Wayne State University, Detroit, Michigan; Georgia Institute of Technology, School of Chemistry and Biochemistry, Parker Petit Institute for Bioengineering and Biosciences, Atlanta, Georgia; and Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Elias S J Arnér
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing,China; Department of Animal Science, Cornell University, Ithaca, New York; Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China; Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, Mississippi; Department of Nutrition, Norwich Medical School, University of East Anglia, Norwich, Norfolk, United Kingdom; Institute of Environmental Health Sciences, Wayne State University, Detroit, Michigan; Georgia Institute of Technology, School of Chemistry and Biochemistry, Parker Petit Institute for Bioengineering and Biosciences, Atlanta, Georgia; and Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
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Abstract
Selenium is an essential metalloid required for the expression of selenoproteins. While cells are constantly challenged by clastogens of endogenous and exogenous origins, genome integrity is maintained by direct repair of DNA damage, redox balance, and epigenetic regulation. To date, only five selenoproteins are experimentally demonstrated to reside in nucleus, exclusively or partially, including selenoprotein H, methionine-R-sulfoxide reductase 1, glutathione peroxidase-4, thioredoxin reductase-1, and thioredoxin glutathione reductase. All these five selenoproteins have demonstrated or potential roles in redox regulation and genome maintenance. Selenoprotein H is known to transactivate the expression of a couple of genes against oxidative stress. The thioredoxin reductase-1b isoform delivers estrogen receptor-α and -β to the nucleus. Nuclear glutathione peroxidase-4 epigenetically and globally inhibits gene expression through the maintenance of chromatin compactness in testes. Continued studies on how these and additional nuclear selenoproteins regulate genome stability will have profound impact on advancing our understanding in selenium regulation of optimal health. © 2015 IUBMB Life, 68(1):5-12, 2016.
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Affiliation(s)
- Xiong Zhang
- Department of Geriatrics & Neurology, The Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Li Zhang
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, USA
| | - Jian-Hong Zhu
- Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, USA
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Abstract
Oxidative stress and persistent DNA damage response contribute to cellular senescence, a degeneration process critically involving ataxia telangiectasia-mutated (ATM) and p53. Selenoprotein H (SelH), a nuclear selenoprotein, is proposed to carry redox and transactivation domains. To determine the role of SelH in genome maintenance, shRNA knockdown was employed in human normal and immortalized cell lines. SelH shRNA MRC-5 diploid fibroblasts under ambient O2 displayed a distinct profile of senescence including β-galactosidase expression, autofluorescence, growth inhibition, and ATM pathway activation. Such senescence phenotypes were alleviated in the presence of ATM kinase inhibitors, by p53 shRNA knockdown, or by maintaining the cells under 3% O2. During the course of 5-day recovery, the induction of phospho-ATM on Ser-1981 and γH2AX by H2O2 treatment (20 μm) subsided in scrambled shRNA but exacerbated in SelH shRNA MRC-5 cells. Results from clonogenic assays demonstrated hypersensitivity of SelH shRNA HeLa cells to paraquat and H2O2, but not to hydroxyurea, neocarzinostatin, or camptothecin. While SelH mRNA expression was induced by H2O2 treatment, SelH-GFP did not mobilize to sites of oxidative DNA damage. The glutathione level was lower in SelH shRNA than scrambled shRNA HeLa cells, and the H2O2-induced cell death was rescued in the presence of N-acetylcysteine, a glutathione precursor. Altogether, SelH protects against cellular senescence to oxidative stress through a genome maintenance pathway involving ATM and p53.
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Affiliation(s)
- Ryan T Y Wu
- From the Department of Nutrition and Food Science, University of Maryland, College Park, Maryland 20742
| | - Lei Cao
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Mississippi State, Mississippi 39762, and
| | - Benjamin P C Chen
- Division of Molecular Radiation Biology, Department of Radiation Oncology, Southwestern Medical Center at Dallas, University of Texas, Dallas, Texas 75390
| | - Wen-Hsing Cheng
- From the Department of Nutrition and Food Science, University of Maryland, College Park, Maryland 20742, Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Mississippi State, Mississippi 39762, and
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Xia K, He X, Dai Q, Cheng WH, Qi X, Guo M, Luo Y, Huang K, Zhao C, Xu W. Discovery of systematic responses and potential biomarkers induced by ochratoxin A using metabolomics. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2014; 31:1904-13. [PMID: 25255040 DOI: 10.1080/19440049.2014.957249] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Ochratoxin A (OTA) is known to be nephrotoxic and hepatotoxic in rodents when exposed orally. To understand the systematic responses to OTA exposure, GC-MS- and (1)H-NMR-based metabolomic techniques together with histopathological assessments were applied to analyse the urine and plasma of OTA-exposed rats. It was found that OTA exposure caused significant elevation of amino acids (alanine, glycine, leucine etc.), pentose (ribose, glucitol, xylitol etc.) and nucleic acid metabolites (pseudouridine, adenosine, uridine). Moreover, myo-inositol, trimethylamine-oxide (TMAO), pseudouridine and leucine were identified as potential biomarkers for OTA toxicity. The primary pathways included the pentose phosphate pathway (PPP), the Krebs cycle (TCA), the creatine pathway and gluconeogenesis. The activated PPP was attributed to the high requirements for nicotinamide adenine dinucleotide phosphate (NADPH), which is involved in OTA metabolism through cytochrome P450. The elevated gluconeogenesis and TCA suggest that energy metabolism was involved. The up-regulated synthesis of creatinine reveals the elevated catabolism of proteins. These findings provide an overview of systematic responses to OTA exposure and metabolomic insight into the toxicological mechanism of OTA.
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Affiliation(s)
- Kai Xia
- a Laboratory of Food Safety and Molecular Biology, College of Food Science and Nutritional Engineering , China Agricultural University , Beijing , China
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Guo M, Huang K, Chen S, Qi X, He X, Cheng WH, Luo Y, Xia K, Xu W. Combination of metagenomics and culture-based methods to study the interaction between ochratoxin a and gut microbiota. Toxicol Sci 2014; 141:314-23. [PMID: 24973096 PMCID: PMC4833112 DOI: 10.1093/toxsci/kfu128] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 06/16/2014] [Indexed: 02/06/2023] Open
Abstract
Gut microbiota represent an important bridge between environmental substances and host metabolism. Here we reported a comprehensive study of gut microbiota interaction with ochratoxin A (OTA), a major food-contaminating mycotoxin, using the combination of metagenomics and culture-based methods. Rats were given OTA (0, 70, or 210 μg/kg body weight) by gavage and fecal samples were collected at day 0 and day 28. Bacterial genomic DNA was extracted from the fecal samples and both 16S rRNA and shotgun sequencing (two main methods of metagenomics) were performed. The results indicated OTA treatment decreased the within-subject diversity of the gut microbiota, and the relative abundance of Lactobacillus increased considerably. Changes in functional genes of gut microbiota including signal transduction, carbohydrate transport, transposase, amino acid transport system, and mismatch repair were observed. To further understand the biological sense of increased Lactobacillus, Lactobacillus selective medium was used to isolate Lactobacillus species from fecal samples, and a strain with 99.8% 16S rRNA similarity with Lactobacillus plantarum strain PFK2 was obtained. Thin-layer chromatography showed that this strain could absorb but not degrade OTA, which was in agreement with the result in metagenomics that no genes related to OTA degradation increased. In conclusion, combination of metagenomics and culture-based methods can be a new strategy to study intestinal toxicity of toxins and find applicable bacterial strains for detoxification. When it comes to OTA, this kind of mycotoxin can cause compositional and functional changes of gut microbiota, and Lactobacillus are key genus to detoxify OTA in vivo.
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Affiliation(s)
- Mingzhang Guo
- Laboratory of Food Safety and Molecular Biology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, P.R. China
| | - Kunlun Huang
- Laboratory of Food Safety and Molecular Biology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, P.R. China
| | - Siyuan Chen
- Laboratory of Food Safety and Molecular Biology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, P.R. China
| | - Xiaozhe Qi
- Laboratory of Food Safety and Molecular Biology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, P.R. China
| | - Xiaoyun He
- Laboratory of Food Safety and Molecular Biology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, P.R. China
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Starkville, Mississippi State, Mississippi 39762
| | - Yunbo Luo
- Laboratory of Food Safety and Molecular Biology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, P.R. China
| | - Kai Xia
- Laboratory of Food Safety and Molecular Biology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, P.R. China
| | - Wentao Xu
- Laboratory of Food Safety and Molecular Biology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, P.R. China
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Tzeng TJ, Cao L, Fu Y, Zeng H, Cheng WH. Methylseleninic acid sensitizes Notch3-activated OVCA429 ovarian cancer cells to carboplatin. PLoS One 2014; 9:e101664. [PMID: 25010594 PMCID: PMC4092030 DOI: 10.1371/journal.pone.0101664] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 06/10/2014] [Indexed: 11/18/2022] Open
Abstract
Ovarian cancer, the deadliest of gynecologic cancers, is usually not diagnosed until advanced stages. Although carboplatin has been popular for treating ovarian cancer for decades, patients eventually develop resistance to this platinum-containing drug. Expression of neurogenic locus notch homolog 3 (Notch3) is associated with chemoresistance and poor overall survival in ovarian cancer patients. Overexpression of NICD3 (the constitutively active form of Notch3) in OVCA429 ovarian cancer cells (OVCA429/NICD3) renders them resistance to carboplatin treatment compared to OVCA429/pCEG cells expressing an empty vector. We have previously shown that methylseleninic acid (MSeA) induces oxidative stress and activates ataxia-telangiectasia mutated and DNA-dependent protein kinase in cancer cells. Here we tested the hypothesis that MSeA and carboplatin exerted a synthetic lethal effect on OVCA429/NICD3 cells. Co-treatment with MSeA synergistically sensitized OVCA429/NICD3 but not OVCA429/pCEG cells to the killing by carboplatin. This synergism was associated with a cell cycle exit at the G2/M phase and the induction of NICD3 target gene HES1. Treatment of N-acetyl cysteine or inhibitors of the above two kinases did not directly impact on the synergism in OVCA429/NICD3 cells. Taken together, these results suggest that the efficacy of carboplatin in the treatment of high grade ovarian carcinoma can be enhanced by a combinational therapy with MSeA.
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Affiliation(s)
- Tiffany J. Tzeng
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland, United States of America
| | - Lei Cao
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, Mississippi, United States of America
| | - YangXin Fu
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada
| | - Huawei Zeng
- USDA, Agriculture Research Service, Grand Forks Human Research Center, Grand Forks, North Dakota, United States of America
| | - Wen-Hsing Cheng
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland, United States of America
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, Mississippi, United States of America
- * E-mail:
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Shen XL, Zhang B, Liang R, Cheng WH, Xu W, Luo Y, Zhao C, Huang K. Central role of Nix in the autophagic response to ochratoxin A. Food Chem Toxicol 2014; 69:202-9. [DOI: 10.1016/j.fct.2014.04.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Revised: 03/23/2014] [Accepted: 04/08/2014] [Indexed: 11/29/2022]
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Dai Q, Zhao J, Qi X, Xu W, He X, Guo M, Dweep H, Cheng WH, Luo Y, Xia K, Gretz N, Huang K. MicroRNA profiling of rats with ochratoxin A nephrotoxicity. BMC Genomics 2014; 15:333. [PMID: 24885635 PMCID: PMC4035064 DOI: 10.1186/1471-2164-15-333] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 04/30/2014] [Indexed: 12/31/2022] Open
Abstract
Background Nephrotoxicity is the most prominent one among the various toxicities of ochratoxin A (OTA). MicroRNAs (miRNAs) are small non-coding RNAs that have an impact on a wide range of biological processes by regulating gene expression at post-transcriptional level or protein systhesis level. The objective of this study is to analyze miRNA profiling in the kidneys of rats gavaged with OTA. Results To profile miRNAs in the kidneys of rats with OTA nephrotoxicity, high-throughput sequencing and bioinformatics approaches were applied to analyze the miRNAs in the kidney of rats following OTA treatment. A total of 409 known miRNAs and 8 novel miRNAs were identified in the kidney and the levels of the novel miRNAs were varied in response to different doses of OTA. Expression of miR-129, miR-130a, miR-130b, miR-141, miR-218b and miR-3588 were uniquely suppressed in mid dose but then elevated in high dose, with opposite expression to their target genes. The expression pattern was closely related with the “MAPK signaling pathway”. Dicer1 and Drosha were significantly suppressed, indicating an impairment of miRNA biogenesis in response to OTA. Conclusions The abrogation of miRNA maturation process suggests a new target of OTA toxicity. Moreover, the identification of the differentially expressed miRNAs provides us a molecular insight into the nephrtoxicity of OTA. Electronic supplementary material The online version of this article (doi:10.1186/1471-2164-15-333) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | | | | | - Wentao Xu
- Laboratory of food safety and molecular biology, College of Food Science and Nutritional Engineering, China Agricultural University, 302 box, No,17, Qinghua East Rd, Beijing, Haidian District 100083, P R China.
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Ludlow AT, Spangenburg EE, Chin ER, Cheng WH, Roth SM. Telomeres shorten in response to oxidative stress in mouse skeletal muscle fibers. J Gerontol A Biol Sci Med Sci 2014; 69:821-30. [PMID: 24418792 DOI: 10.1093/gerona/glt211] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Aging phenotypes are dictated by myriad cellular changes including telomere shortening. In most tissues, telomere shortening is accelerated during replication if unrepaired oxidative damage to telomere sequences is present. However, the effect of reactive oxygen species exposure on skeletal muscle telomeres is unknown. We sought to determine if oxidative stress shortens telomeres in isolated adult rodent skeletal muscle fibers. Flexor digitorum brevis muscles were dissected from male mice (C57BL/6, long telomere and CAST/Ei, wild-derived, short telomere) and dissociated into single fibers. Fibers were cultured at an oxygen tension of 2%-5% for 5 days in control, hydrogen peroxide (oxidant), or a combination of N-acetylcysteine (antioxidant) and oxidant containing media. Telomere length, telomerase enzyme activity, and protein content of TRF1 and TRF2 were subsequently measured. In both strains, oxidative stress resulted in significant telomere shortening in isolated skeletal muscle fibers, likely by different mechanisms. Telomerase activity was not altered by oxidative stress treatment but was significantly different between strains, with greater telomerase activity in long-telomere-bearing C57BL/6 mice. These results provide important insights into mechanisms by which oxidative stress could shorten skeletal muscle telomeres.
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Affiliation(s)
| | | | - Eva R Chin
- Department of Kinesiology, School of Public Health and
| | - Wen-Hsing Cheng
- Department of Nutrition and Food Science, University of Maryland, College Park. Present address: Department of Food Science, Nutrition and Health Promotion, Mississippi State University
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Rocourt CRB, Wu M, Chen BPC, Cheng WH. The catalytic subunit of DNA-dependent protein kinase is downstream of ATM and feeds forward oxidative stress in the selenium-induced senescence response. J Nutr Biochem 2012; 24:781-7. [PMID: 22841545 DOI: 10.1016/j.jnutbio.2012.04.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Revised: 04/17/2012] [Accepted: 04/18/2012] [Indexed: 10/28/2022]
Abstract
Selenium induces a senescence response in cells through induction of ataxia-telangiectasia mutated (ATM) and reactive oxygen species (ROS). Although a role of the catalytic subunit of DNA-dependent protein kinase (DNA-PKcs) in DNA double-strand break repair is established, it is unclear how these proteins function in response to selenium-induced oxidative stress and senescence induction. In this study, we demonstrated that pretreating normal human diploid fibroblasts with DNA-PK kinase inhibitor NU 7026 suppressed selenium-induced senescence response. Selenium treatment induced phosphorylation of DNA-PKcs on Thr-2647 and Ser-2056, the extent of which was decreased in the presence of ATM kinase inhibitor KU 55933 or the antioxidants N-acetylcysteine or 2,2,6,6-tetramethylpiperidine-1-oxyl. In contrast, the selenium-induced phosphorylation of ATM on Ser-1981 was not affected by NU 7026. Cells deficient in DNA-PKcs or pretreated with NU 7026 or N-acetylcysteine were defective in selenite-induced ROS formation. Taken together, these results indicate a distinct role of DNA-PKcs, in which this kinase can respond to and feed forward selenium-induced ROS formation and is placed downstream of ATM in the resultant senescence response.
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Affiliation(s)
- Caroline R B Rocourt
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA
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Zeng H, Cheng WH, Johnson LK. Methylselenol, a selenium metabolite, modulates p53 pathway and inhibits the growth of colon cancer xenografts in Balb/c mice. J Nutr Biochem 2012; 24:776-80. [PMID: 22841391 DOI: 10.1016/j.jnutbio.2012.04.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 04/10/2012] [Accepted: 04/13/2012] [Indexed: 01/06/2023]
Abstract
It is has been hypothesized that methylselenol is a critical selenium metabolite for anticancer activity in vivo. In this study, we used a protein array which contained 112 different antibodies known to be involved in the p53 pathway to investigate the molecular targets of methylselenol in human HCT116 colon cancer cells. The array analysis indicated that methylselenol exposure changed the expression of 11 protein targets related to the regulation of cell cycle and apoptosis. Subsequently, we confirmed these proteins with the Western blotting approach, and found that methylselenol increased the expression of GADD 153 and p21 but reduced the level of c-Myc, E2F1 and Phos p38 MAP kinase. Similar to our previous report on human HCT116 colon cancer cells, methylselenol also inhibited cell growth and led to an increase in G1 and G2 fractions with a concomitant drop in S-phase in mouse colon cancer MC26 cells. When the MC26 cells were transplanted to their immune-competent Balb/c mice, methylselenol-treated MC26 cells had significantly less tumor growth potential than that of untreated MC26 cells. Taken together, our data suggest that methylselenol modulates the expression of key genes related to cell cycle and apoptosis and inhibits colon cancer cell proliferation and tumor growth.
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Affiliation(s)
- Huawei Zeng
- US Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203, USA.
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Cheng WH, Holmstrom A, Li X, Wu RTY, Zeng H, Xiao Z. Effect of dietary selenium and cancer cell xenograft on peripheral T and B lymphocytes in adult nude mice. Biol Trace Elem Res 2012; 146:230-5. [PMID: 22020772 DOI: 10.1007/s12011-011-9235-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Accepted: 10/06/2011] [Indexed: 12/21/2022]
Abstract
Selenium (Se) is known to regulate tumorigenesis and immunity at the nutritional and supranutritional levels. Because the immune system provides critical defenses against cancer and the athymic, immune-deficient NU/J nude mice are known to gradually develop CD8(+) and CD4(+) T cells, we investigated whether B and T cell maturation could be modulated by dietary Se and by tumorigenesis in nude mice. Fifteen homozygous nude mice were fed a Se-deficient, Torula yeast basal diet alone (Se-) or supplemented with 0.15 (Se+) or 1.0 (Se++) mg Se/kg (as Na(2)SeO(4)) for 6 months, followed by a 7-week time course of PC-3 prostate cancer cell xenograft (2 × 10(6) cells/site, 2 sites/mouse). Here, we show that peripheral B cell levels decreased in nude mice fed the Se - or Se++ diet and the CD4(+) T cell levels increased in mice fed the Se++ diet. During the PC-3 cell tumorigenesis, dietary Se status did not affect peripheral CD4(+) or CD8(+) T cells in nude mice whereas mice fed with the Se++ diet appeared to exhibit greater peripheral CD25(+)CD4(+) T cells on day 9. Dietary Se status did not affect spleen weight in nude mice 7 weeks after the xenograft. Spleen weight was associated with frequency of peripheral CD4(+), but not CD8(+) T cells. Taken together, dietary Se at the nutritional and supranutritional levels regulates peripheral B and T cells in adult nude mice before and after xenograft with PC-3 prostate cancer cells.
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Affiliation(s)
- Wen-Hsing Cheng
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA.
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Cheng WH, Rocourt CR, Wu M, Chen BP. Abstract 5425: The catalytic subunit of DNA-dependent protein kinase is downstream of ATM and feeds forward oxidative stress in selenium-induced senescence response. Cancer Res 2012. [DOI: 10.1158/1538-7445.am2012-5425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Selenium induces a senescence response through induction of ataxia-telangiectasia mutated (ATM) and reactive oxygen species (ROS). Although a role of the DNA-PK complex, including the catalytic subunit of DNA-dependent protein kinase (DNA-PKcs), Ku70 and Ku80, in DNA double strand break repair is established, it is unclear how these proteins function in the response to selenium-induced oxidative stress and senescence induction. In this study we demonstrate that pre-treating normal human diploid fibroblasts with DNA-PK kinase inhibitor NU 7026 suppresses selenium-induced senescence response. Selenium treatment induces phosphorylation of DNA-PKcs on Thr-2647 and Ser-2056, the extent of which is decreased in the presence of ATM kinase inhibitor KU 55933 or the antioxidant N-acetylcysteine or 2,2,6,6-tetramethylpiperidine-1-oxyl. In contrast, the selenium-induced phosphorylation of ATM on Ser-1981 is not affected by NU 7026. Cells deficient in DNA-PKcs or pre-treated with NU 7026 or N-acetylcysteine are defective in selenite-induced ROS formation. Opposed to DNA-PKcs, Ku70 and Ku80 are dispensable for selenite-induced ROS and γH2A.X formation and removal. Taken together, these results indicate a distinct role of DNA-PKcs from Ku70 and Ku80, in which this kinase can respond to and feed forward selenium-induced ROS formation and is placed downstream of ATM in the resultant senescence response.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 5425. doi:1538-7445.AM2012-5425
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Affiliation(s)
| | | | - Min Wu
- 1Univ. of Maryland, College Park, College Park, MD
| | - Benjamin P. Chen
- 2University of Texas Southwestern Medical Center at Dallas, Dallas, TX
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Rocourt CRB, Wu M, Chen BPC, Cheng WH. The catalytic subunit of DNA‐dependent protein kinase is downstream of ATM and feeds forward oxidative stress in selenium‐induced senescence response. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.253.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Min Wu
- University of MarylandCollege ParkMD
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45
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Rouse JJ, Cheng WH. Selenium‐induced senescence involves heterochromatin formation. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.1022.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Tzeng TJ, Wu RTY, Rocourt CRB, Cheng WH. Targeting DNA repair protein as an approach for sensitizing cancer cells to methylseleninic acid. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.253.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Wu RTY, Cheng WH. A role for Selenoprotein H in genome stability maintenance against oxidative stress. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.253.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Cheng WH, Wu RTY, Wu M, Rocourt CRB, Carrillo JA, Song J, Bohr CT, Tzeng TJ. Targeting Werner syndrome protein sensitizes U-2 OS osteosarcoma cells to selenium-induced DNA damage response and necrotic death. Biochem Biophys Res Commun 2012; 420:24-8. [PMID: 22390926 DOI: 10.1016/j.bbrc.2012.02.104] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Accepted: 02/17/2012] [Indexed: 11/29/2022]
Abstract
Mutations in the Werner syndrome protein (WRN), a caretaker of the genome, result in Werner syndrome, which is characterized by premature aging phenotypes and cancer predisposition. Methylseleninic acid (MSeA) can activate DNA damage responses and is a superior compound to suppress tumorigenesis in mouse models of cancer. To test the hypothesis that targeting WRN can potentiate selenium toxicity in cancer cells, isogenic WRN small hairpin RNA (shRNA) and control shRNA U-2 OS osteosarcoma cells were treated with MSeA for 2d, followed by recovery for up to 7d. WRN deficiency sensitized U-2 OS cells to MSeA-induced necrotic death. Co-treatment with the ataxia-telangiectasia mutated (ATM) kinase inhibitor KU55933 desensitized the control shRNA cells, but not WRN shRNA cells, to MSeA treatment. WRN did not affect MSeA-induced ATM phosphorylation on Ser-1981 or H2A.X phosphorylation on Ser-139, but promoted recovery from the MSeA-induced DNA damage. Taken together, WRN protects U-2 OS osteosarcoma cells against MSeA-induced cytotoxicity, suggesting that oxidative DNA repair pathway is a promising target for improving the efficacy of selenium on tumor suppression.
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Affiliation(s)
- Wen-Hsing Cheng
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA.
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Zhang S, Luo Y, Zeng H, Wang Q, Tian F, Song J, Cheng WH. Encapsulation of selenium in chitosan nanoparticles improves selenium availability and protects cells from selenium-induced DNA damage response. J Nutr Biochem 2011; 22:1137-42. [DOI: 10.1016/j.jnutbio.2010.09.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2010] [Revised: 09/01/2010] [Accepted: 09/23/2010] [Indexed: 10/18/2022]
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Holmstrom A, Wu RTY, Zeng H, Lei KY, Cheng WH. Nutritional and supranutritional levels of selenate differentially suppress prostate tumor growth in adult but not young nude mice. J Nutr Biochem 2011; 23:1086-91. [PMID: 22137259 DOI: 10.1016/j.jnutbio.2011.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Revised: 05/19/2011] [Accepted: 06/07/2011] [Indexed: 11/30/2022]
Abstract
The inhibitory effect of oral methylseleninic acid or methylselenocysteine administration on cancer cell xenograft development in nude mice is well characterized; however, less is known about the efficacy of selenate and age on selenium chemoprevention. In this study, we tested whether selenate and duration on diets would regulate prostate cancer xenograft in nude mice. Thirty-nine homozygous NU/J nude mice were fed a selenium-deficient, Torula yeast basal diet alone (Se-) or supplemented with 0.15 (Se) or 1.0 (Se+) mg selenium/kg (as Na₂SeO₄) for 6 months in Experiment 1 and for 4 weeks in Experiment 2, followed by a 47-day PC-3 prostate cancer cell xenograft on the designated diet. In Experiment 1, the Se- diet enhanced the initial tumor development on days 11-17, whereas the Se+ diet suppressed tumor growth on days 35-47 in adult nude mice. Tumors grown in Se- mice were loosely packed and showed increased necrosis and inflammation as compared to those in Se and Se+ mice. In Experiment 2, dietary selenium did not affect tumor development or histopathology throughout the time course. In both experiments, postmortem plasma selenium concentrations in Se and Se+ mice were comparable and were twofold greater than those in Se- mice. Taken together, dietary selenate at nutritional and supranutritional levels differentially inhibit tumor development in adult, but not young, nude mice engrafted with PC-3 prostate cancer cells.
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Affiliation(s)
- Alexandra Holmstrom
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA
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