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Dou X, Zhang B, Qiao L, Song X, Pi S, Chang J, Zhang X, Zeng X, Zhu L, Xu C. Biogenic Selenium Nanoparticles Synthesized by Lactobacillus casei ATCC 393 Alleviate Acute Hypobaric Hypoxia-Induced Intestinal Barrier Dysfunction in C57BL/6 Mice. Biol Trace Elem Res 2022:10.1007/s12011-022-03513-y. [PMID: 36469280 DOI: 10.1007/s12011-022-03513-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 11/29/2022] [Indexed: 12/11/2022]
Abstract
Exposure to hypobaric hypoxia at high altitude will cause different tissue and organ damage over a long period of time. Studies have shown that hypobaric hypoxia can cause severe primary intestinal barrier dysfunction, and then cause multiple organ dysfunction. Our previous research showed that selenium nanoparticles (SeNPs) synthesized by Lactobacillus casei ATCC 393 (L. casei ATCC 393) can effectively alleviate intestinal barrier dysfunction caused by oxidative stress and inflammation in mice. This study was conducted to investigate the protective effect of biological SeNPs synthesized by L. casei ATCC 393 on intestinal barrier function in acute hypobaric hypoxic stress mice. The results showed that compared with the hypobaric hypoxic, the SeNPs synthesized by L. casei ATCC 393 by oral administration could effectively alleviate the shortening of intestinal villi, which decreased the level of diamine oxidase (DAO) and myeloperoxidase (MPO), and the expression level of tight junction protein in ileum was increased. In addition, SeNPs significantly increased the activities of superoxide dismutase (SOD), cyclooxygenase (COX-1) and glutathione peroxidase (GPx), and decreased the level of malondialdehyde (MDA), and inhibit the increase of hypoxia related factor. SeNPs effectively regulate the intestinal microecology disorder caused by hypobaric hypoxia stress, and maintain the intestinal microecology balance. In addition, oral administration of SeNPs had better protective effect on intestinal barrier function of mice under hypobaric hypoxia stress. These results suggested that SeNPs synthesized by L. casei ATCC 393 can effectively alleviate the damage of intestinal barrier function under acute hypobaric hypoxic stress, which may be closely related to the antioxidant activity of SeNPs.
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Affiliation(s)
- Xina Dou
- The Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyixi Road Xi'an, Shaanxi, 710072, China
| | - Baohua Zhang
- The Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyixi Road Xi'an, Shaanxi, 710072, China
| | - Lei Qiao
- The Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyixi Road Xi'an, Shaanxi, 710072, China
| | - Xiaofan Song
- The Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyixi Road Xi'an, Shaanxi, 710072, China
| | - Shanyao Pi
- The Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyixi Road Xi'an, Shaanxi, 710072, China
| | - Jiajing Chang
- The Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyixi Road Xi'an, Shaanxi, 710072, China
| | - Xinyi Zhang
- The Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyixi Road Xi'an, Shaanxi, 710072, China
| | - Xiaonan Zeng
- The Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyixi Road Xi'an, Shaanxi, 710072, China
| | - Lixu Zhu
- The Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyixi Road Xi'an, Shaanxi, 710072, China
| | - Chunlan Xu
- The Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyixi Road Xi'an, Shaanxi, 710072, China.
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Jian H, Miao S, Liu Y, Li H, Zhou W, Wang X, Dong X, Zou X. Effects of Dietary Valine Levels on Production Performance, Egg Quality, Antioxidant Capacity, Immunity, and Intestinal Amino Acid Absorption of Laying Hens during the Peak Lay Period. Animals (Basel) 2021; 11:1972. [PMID: 34209447 PMCID: PMC8300305 DOI: 10.3390/ani11071972] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/10/2021] [Accepted: 06/28/2021] [Indexed: 12/13/2022] Open
Abstract
The present study aimed to assess the impact of dietary valine levels on layer production performance, egg quality, immunity, and intestinal amino acid absorption of laying hens during the peak lay period. For this purpose, a total of 960 33-week-old Fengda No.1 laying hens were randomly divided into five experimental groups and fed with valine at the following different levels in a feeding trial that lasted 8 weeks: 0.59, 0.64, 0.69, 0.74, and 0.79%, respectively. Productive performances were recorded throughout the whole rearing cycle and the egg quality, serum indexes, and small intestine transporters expression were assessed at the end of the experiment after slaughter (41 weeks) on 12 hens per group. Statistical analysis was conducted by one-way ANOVA followed by LSD multiple comparison tests with SPSS 20.0 (SPSS, Chicago, IL, USA). The linear and quadratic effects were tested by SPSS 20.0. Egg mass, laying rate, broken egg rate, and feed conversion ratio were significantly improved with increasing dietary valine levels. However, the egg weight, eggshell thickness, albumen height, Haugh unit, and egg yolk color were significantly decreased with increasing dietary valine levels. Serum catalase (CAT), immunoglobulin A (IgA) and IgM levels, and malondialdehyde (MDA) levels were negative responses to valine-treated laying hens. Dietary supplemented valine enhanced the trypsin activity of duodenum chime and promoted the mRNA expression levels of ATB0,+, and LAT4 in the jejunum and corresponding serum free Ile, Lys, Phe, Val, and Tyr level. However, valine treatment significantly downregulated the mRNA expression levels of PePT1, B0AT1, LAT1, and SNAT2 in the small intestines and corresponding serum free Arg, His, Met, Thr, Ala, Asp, Glu, Gly, and Ser level. Our results suggest that 0.79% valine dietary supplementation can improve production performance by promoting amino acid nutrient uptake and utilization, and suggest a supplement of 0.79% valine to diet.
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Affiliation(s)
| | | | | | | | | | | | | | - Xiaoting Zou
- Institute of Feed Science, College of Animal Science, Zhejiang University, Hangzhou 310058, China; (H.J.); (S.M.); (Y.L.); (H.L.); (W.Z.); (X.W.); (X.D.)
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Liu SK, Ma LB, Yuan Y, Ji XY, Sun WJ, Duan JX, Zeng QP, Wasti B, Xiao B, Zheng JF, Chen P, Xiang XD. Alanylglutamine Relieved Asthma Symptoms by Regulating Gut Microbiota and the Derived Metabolites in Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:7101407. [PMID: 33456673 PMCID: PMC7785351 DOI: 10.1155/2020/7101407] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 11/26/2020] [Accepted: 12/04/2020] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Allergic asthma is a chronic inflammatory disease, which seriously affects the life quality of patients, especially children. Alanylglutamine is a nutritional supplement with potential protective and anti-inflammatory effects, but its function in allergic asthma remains elusive. In this study, we focused on the investigations of the roles and functional mechanism of Alanylglutamine in asthma. METHODS Ovalbumin (OVA) induction was utilized to establish a mouse asthma model. 16S rDNA sequencing was performed to compare the diversity of intestinal microorganisms under different treatments. Gas chromatography was utilized to screen the intestinal microbe-short-chain fatty acids in the stool. The lung tissue was extracted to determine signaling pathways, including AMPK, NF-κB, mTOR, STAT3, IKKβ, TGF-β, and IL-1β through Western blot or RT-qPCR. RESULTS It was observed that Alanylglutamine reduced the cytokine in OVA-induced allergic asthma mice. H&E staining showed obvious pneumonia symptoms in the asthma group, while Alanylglutamine alleviated the inflammatory infiltration. Alanylglutamine reversed gut microbiota compositions in OVA-induced allergic asthma mice and enhanced the butyric acid level. The protective role of Alanylglutamine may be associated with the gut microbiota-butyric acid-GPR43 pathway in asthma mice. In contrast to the OVA group, Alanylglutamine activated the protein expression of P-AMPK/AMPK and inhibited the protein expression of P-mTOR/mTOR, P-P65/P65, P-STAT3/STAT3, P-IKKβ/IKKβ, TGF-β, and IL-1β, with similar effects from butyric acid. CONCLUSION The results indicated that Alanylglutamine might be beneficial for asthma, and its effect was achieved through the regulation on microbiota and the derived metabolites. The therapeutic effects might be associated with AMPK, NF-κB, mTOR, and STAT3 signaling pathways. These findings will help identify effective therapeutic direction to alleviate allergic inflammation of the lungs and airways.
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Affiliation(s)
- Shao-Kun Liu
- Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
| | - Li-Bing Ma
- Department of Respiratory Medicine, The Affiliated Hospital of Guilin Medical University, Guilin 541001, China
- Institute of Respiratory Diseases, Guilin Medical University, Guilin 541001, China
| | - Yu Yuan
- Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
| | - Xiao-Ying Ji
- Department of Respiratory Medicine, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen 518106, China
| | - Wen-Jin Sun
- Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
| | - Jia-Xi Duan
- Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
| | - Qing-Ping Zeng
- Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
| | - Binaya Wasti
- Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
| | - Bing Xiao
- Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
| | - Jian-Fei Zheng
- Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
| | - Ping Chen
- Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
| | - Xu-Dong Xiang
- Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
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Xu J, Zeug A, Riederer B, Yeruva S, Griesbeck O, Daniel H, Tuo B, Ponimaskin E, Dong H, Seidler U. Calcium-sensing receptor regulates intestinal dipeptide absorption via Ca 2+ signaling and IK Ca activation. Physiol Rep 2020; 8:e14337. [PMID: 31960592 PMCID: PMC6971415 DOI: 10.14814/phy2.14337] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Although absorption of di- and tripeptides into intestinal epithelial cells occurs via the peptide transporter 1 (PEPT1, also called solute carrier family 15 member 1 (SLC15A1)), the detailed regulatory mechanisms are not fully understood. We examined: (a) whether dipeptide absorption in villous enterocytes is associated with a rise in cytosolic Ca2+ ([Ca2+ ]cyt ), (b) whether the calcium sensing receptor (CaSR) is involved in dipeptide-elicited [Ca2+ ]cyt signaling, and (c) what potential consequences of [Ca2+ ]cyt signaling may enhance enterocyte dipeptide absorption. Dipeptide Gly-Sar and CaSR agonist spermine markedly raised [Ca2+ ]cyt in villous enterocytes, which was abolished by NPS-2143, a selective CaSR antagonist and U73122, an phospholipase C (PLC) inhibitor. Apical application of Gly-Sar induced a jejunal short-circuit current (Isc), which was reduced by NPS-2143. CaSR expression was identified in the lamina propria and on the basal enterocyte membrane of mouse jejunal mucosa in both WT and Slc15a1-/- animals, but Gly-Sar-induced [Ca2+ ]cyt signaling was significantly decreased in Slc15a1-/- villi. Clotrimazole and TRM-34, two selective blockers of the intermediate conductance Ca2+ -activated K+ channel (IKCa ), but not iberiotoxin, a selective blocker of the large-conductance K+ channel (BKCa ) and apamin, a selective blocker of the small-conductance K+ channel (SKCa ), significantly inhibited Gly-Sar-induced Isc in native tissues. We reveal a novel CaSR-PLC-Ca2+ -IKCa pathway in the regulation of small intestinal dipeptide absorption, which may be exploited as a target for future drug development in human nutritional disorders.
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Affiliation(s)
- Jingyu Xu
- Department of Gastroenterology, Hepatology and EndocrinologyHannover Medical SchoolHannoverGermany
- Research GastroenterologyAffiliated Hospital of Zunyi Medical UniversityZunyiChina
| | - Andre Zeug
- Cellular NeurophysiologyHannover Medical SchoolHannoverGermany
| | - Brigitte Riederer
- Department of Gastroenterology, Hepatology and EndocrinologyHannover Medical SchoolHannoverGermany
| | - Sunil Yeruva
- Department of Gastroenterology, Hepatology and EndocrinologyHannover Medical SchoolHannoverGermany
| | | | - Hannelore Daniel
- Nutritional PhysiologyTechnical University of MunichFreisingGermany
| | - Biguang Tuo
- Research GastroenterologyAffiliated Hospital of Zunyi Medical UniversityZunyiChina
| | | | - Hui Dong
- Department of MedicineUniversity of California, San DiegoLa JollaCAUSA
| | - Ursula Seidler
- Department of Gastroenterology, Hepatology and EndocrinologyHannover Medical SchoolHannoverGermany
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5
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Alghamdi OA, King N, Andronicos NM, Jones GL, Chami B, Witting PK, Moens PDJ. Molecular changes to the rat renal cotransporters PEPT1 and PEPT2 due to ageing. Mol Cell Biochem 2018; 452:71-82. [DOI: 10.1007/s11010-018-3413-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 07/13/2018] [Indexed: 12/14/2022]
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6
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Zhang M, Xu J, Wang T, Wan X, Zhang F, Wang L, Zhu X, Gao P, Shu G, Jiang Q, Wang S. The Dipeptide Pro-Gly Promotes IGF-1 Expression and Secretion in HepG2 and Female Mice via PepT1-JAK2/STAT5 Pathway. Front Endocrinol (Lausanne) 2018; 9:424. [PMID: 30140255 PMCID: PMC6094964 DOI: 10.3389/fendo.2018.00424] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 07/05/2018] [Indexed: 01/29/2023] Open
Abstract
It has been shown that IGF-1 secretion is influenced by dietary protein or amino acid. However, whether the dipeptides elicit regulatory effects on IGF-1 secretion remains largely unclear. Thus, this study aimed to investigate the effects of the dipeptide Pro-Gly on IGF-1 expression and secretion in HepG2 cells and mice, and explore the underlying mechanisms. The in vitro results indicated that Pro-Gly, but not Pro plus Gly, promoted the expression and secretion of IGF-1 in HepG2. Meanwhile, the expression of the peptide transporter 1 (PepT1) was elevated by Pro-Gly, whereas knockdown of PepT1 with siRNA eliminated the increase of IGF-1 expression induced by Pro-Gly. In addition, Pro-Gly activated JAK2/STAT5 signaling pathway in a PepT1-dependent manner. Furthermore, Pro-Gly enhanced the interaction between JAK2 and STAT5, and the translocation of phospho-STAT5 to nuclei. Moreover, inhibition of JAK2/STAT5 blocked the promotive effect of Pro-Gly on IGF-1 expression and secretion. In agreement with the in vitro results, the in vivo findings demonstrated that Pro-Gly, but not Pro plus Gly, stimulated the expression and secretion of IGF-1 and activated JAK2/STAT5 signaling pathway in the liver of mice injected with Pro-Gly or Pro+Gly acutely or chronically. Besides, acute injection of JAK2/STAT5 inhibitor abolished the elevation of IGF-1 expression and secretion induced by Pro-Gly in mice. Collectively, these findings suggested that the dipeptide Pro-Gly promoted IGF-1 expression and secretion in HepG2 cells and mice by activating JAK2/STAT5 signaling pathway through PepT1. These data provided new insights to the regulation of IGF-1 expression and secretion by the dipeptides.
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Affiliation(s)
- Mengyuan Zhang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, China
| | - Jingren Xu
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, China
| | - Tao Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, China
| | - Xiaojuan Wan
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, China
| | - Fenglin Zhang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, China
| | - Lina Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, China
| | - Xiaotong Zhu
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, China
| | - Ping Gao
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, China
| | - Gang Shu
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, China
| | - Qingyan Jiang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, China
- *Correspondence: Qingyan Jiang
| | - Songbo Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, China
- Songbo Wang
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7
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Liu L, Zhang S, Bao J, He X, Tong D, Chen C, Ying Q, Zhang Q, Zhang C, Li J. Melatonin Improves Laying Performance by Enhancing Intestinal Amino Acids Transport in Hens. Front Endocrinol (Lausanne) 2018; 9:426. [PMID: 30105005 PMCID: PMC6077205 DOI: 10.3389/fendo.2018.00426] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 07/09/2018] [Indexed: 01/11/2023] Open
Abstract
The high concentration of melatonin (MEL) in the intestinal mucosa suggests that it has a special physiological function in intestine. In hens, previous studies have shown that MEL treatment promoted egg-laying performance. Considering the importance of amino acids (AA) for egg formation, we hypothesized that MEL may enhance the intestinal absorption of AA from the feed, thus promoting egg laying performance. In this study, we supplemented the hens with MEL for two consecutive weeks. The results showed that, compared with control group, feeding with 0.625 mg MEL/kg diets gave rise to higher egg laying rate (by 4.3%, P = 0.016), increased eggshell thickness (by 16.9%, P < 0.01) and albumen height (by 4.5%, P = 0.042). Meanwhile, feeding with 0.625 and 2.5 mg MEL/kg diets could significantly increase serum levels of aspartic acid, threonine, serine, glutamic acid, glycine, alanine, isoleucine, leucine, tyrosine, phenylalanine, lysine, histidine, arginine, and proline. Furthermore, a 0.625 mg MEL/kg diets could significantly increase the expression of PepT1 (by 3949.9%), B0AT (by 6045.9%), b0, +AT (by 603.5%), and EAAT3 (by 412.7%) in the jejunum. Additionally, in the cultured intestinal crypt "organoids," treatment with 0.5 μM MEL could significantly enhance the expression of PepT1, b0, +AT and EAAT3 mRNAs by 35.4%, 110.0%, and 160.1%, respectively. Detection of MEL concentration in serum and intestinal fluid suggested that lower dosage of MEL feeding was mainly acted on intestine locally, and further increased intestinal antioxidases (GPx-3, SOD-1 or PRDX-3) mRNA expression. Taken together, we demonstrated that MEL feeding in laying hens could locally promote the expression and function of AA transporter in small intestine by up-regulating antioxidases expression, and finally elevate laying performance.
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Affiliation(s)
- Lijuan Liu
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Siyu Zhang
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Jiayang Bao
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Xiaowen He
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Danni Tong
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Cong Chen
- Yanping Bureau of Animal Husbandry, Veterinary & Aquatic Products, Nanping, China
| | | | - Qing Zhang
- Yanping Bureau of Animal Husbandry, Veterinary & Aquatic Products, Nanping, China
| | - Caiqiao Zhang
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou, China
- *Correspondence: Jian Li
| | - Jian Li
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou, China
- Caiqiao Zhang
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8
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Yin J, Li Y, Han H, Zheng J, Wang L, Ren W, Chen S, Wu F, Fang R, Huang X, Li C, Tan B, Xiong X, Zhang Y, Liu G, Yao J, Li T, Yin Y. Effects of Lysine deficiency and Lys-Lys dipeptide on cellular apoptosis and amino acids metabolism. Mol Nutr Food Res 2017; 61. [PMID: 28012236 DOI: 10.1002/mnfr.201600754] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 12/07/2016] [Accepted: 12/12/2016] [Indexed: 12/16/2022]
Abstract
SCOPE Lysine (Lys) is a common limiting amino acids (AA) for humans and animals and plays an important role in cell proliferation and metabolism, while metabolism of Lys deficiency and its dipeptide is still obscure. Thus, this study mainly investigated the effects of Lys deficiency and Lys-Lys dipeptide on apoptosis and AA metabolism in vitro and in vivo models. METHODS AND RESULTS Lys deficiency induced cell-cycle arrest and apoptosis and upregulated Lys transporters in vitro and in vivo. SLC7A11, a cystine-glutamate antiporter, was markedly upregulated by Lys deficiency and then further mediated cystine uptake and glutamate release, which was negatively regulated by cystine and glutamate transporters. Meanwhile, Lys deprivation upregulated pept1 expression, which might improve Lys-Lys dipeptide absorption to compensate for the reduced Lys availability. Lys-Lys dipeptide alleviated Lys deficiency induced cell-cycle arrest and apoptosis and influenced AA metabolism. Furthermore, the mammalian target of rapamycin signal might be involved in sensing cellular Lys starvation and Lys-Lys dipeptide. CONCLUSIONS Altogether, these studies suggest that Lys deficiency impairs AA metabolism and causes apoptosis. Lys-Lys dipeptide serves as a Lys source and alleviates Lys deficiency induced cellular imbalance.
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Affiliation(s)
- Jie Yin
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Yuying Li
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Hui Han
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Jie Zheng
- College of Animal Science and Technology, Hunan Agriculture University, Hunan, P. R. China
| | - Lijian Wang
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Wenkai Ren
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Shuai Chen
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Fei Wu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Rejun Fang
- College of Animal Science and Technology, Hunan Agriculture University, Hunan, P. R. China.,Hunan Co-Innovation Center of Animal Production Safety, Changsha, Hunan, P. R. China
| | - Xingguo Huang
- College of Animal Science and Technology, Hunan Agriculture University, Hunan, P. R. China.,Guangdong Wangda Group Academician Workstation for Clean Feed Technology Research and Development in Swine, Guangdong Wangda Group Co., Ltd., GuangDong, P. R. China.,Hunan Co-Innovation Center of Animal Production Safety, Changsha, Hunan, P. R. China
| | - Chunyong Li
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China
| | - Bie Tan
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China
| | - Xia Xiong
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China
| | - Yuzhe Zhang
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China
| | - Gang Liu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China
| | - Jiming Yao
- College of Animal Science and Technology, Hunan Agriculture University, Hunan, P. R. China.,Guangdong Wangda Group Academician Workstation for Clean Feed Technology Research and Development in Swine, Guangdong Wangda Group Co., Ltd., GuangDong, P. R. China
| | - Tiejun Li
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China.,Guangdong Wangda Group Academician Workstation for Clean Feed Technology Research and Development in Swine, Guangdong Wangda Group Co., Ltd., GuangDong, P. R. China.,Hunan Co-Innovation Center of Animal Production Safety, Changsha, Hunan, P. R. China.,National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan, P. R. China
| | - Yulong Yin
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, P. R. China.,Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, P. R. China.,Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, P. R. China.,Guangdong Wangda Group Academician Workstation for Clean Feed Technology Research and Development in Swine, Guangdong Wangda Group Co., Ltd., GuangDong, P. R. China.,National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan, P. R. China
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9
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Mooij MG, de Koning BEA, Lindenbergh-Kortleve DJ, Simons-Oosterhuis Y, van Groen BD, Tibboel D, Samsom JN, de Wildt SN. Human Intestinal PEPT1 Transporter Expression and Localization in Preterm and Term Infants. ACTA ACUST UNITED AC 2016; 44:1014-9. [PMID: 27079248 DOI: 10.1124/dmd.115.068809] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 04/13/2016] [Indexed: 01/22/2023]
Abstract
The intestinal influx oligopeptide transporter peptide transporter 1 (PEPT1) (SLC15A1) is best known for nutrient-derived di- and tripeptide transport. Its role in drug absorption is increasingly recognized. To better understand the disposition of PEPT1 substrate drugs in young infants, we studied intestinal PEPT1 mRNA expression and tissue localization across the pediatric age range. PEPT1 mRNA expression was determined using real-time reverse-transcription polymerase chain reaction in small intestinal tissues collected from surgical procedures (neonates and infants) or biopsies (older children and adolescents). PEPT1 mRNA relative to villin mRNA expression was compared between neonates/infants and older children/adolescents. PEPT1 was visualized in infant tissue using immunohistochemical staining. Other transporters [multidrug resistance protein 1 (MDR1), multidrug resistance-like protein 2 (MRP2), and organic anion transporter polypeptide 2B1 (OATP2B1)] were also stained to describe the localization in relation to PEPT1. Twenty-six intestinal samples (n = 20 neonates/infants, n = 2 pediatric, n = 4 adolescents) were analyzed. The young infant samples were collected at a median (range) gestational age at birth of 29.2 weeks (24.7-40) and postnatal age of 2.4 weeks (0-16.6). The PEPT1 mRNA expression of the neonates/infants was only marginally lower (0.8-fold) than the older children (P < 0.05). Similar and clear apical PEPT1 and MRP2 staining, apical and lateral MDR1 staining, and intraepithelial OATP2B1 staining at the basolateral membrane of the enterocyte were detected in 12 infant and 2 adolescent samples. Although small intestinal PEPT1 expression tended to be lower in neonates than in older children, this difference is small and tissue distribution is similar. This finding suggests similar oral absorption of PEPT1 substrates across the pediatric age range.
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Affiliation(s)
- Miriam G Mooij
- Intensive Care and Department of Pediatric Surgery (M.G.M., B.E.A.K., B.D.G., D.T., S.N.W.), and Department of Pediatrics (D.J.L.-K., Y.S.-O., J.N.S.), Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands; and Department of Pharmacology and Toxicology, Radboudumc, Nijmegen, The Netherlands (S.N.W.)
| | - Barbara E A de Koning
- Intensive Care and Department of Pediatric Surgery (M.G.M., B.E.A.K., B.D.G., D.T., S.N.W.), and Department of Pediatrics (D.J.L.-K., Y.S.-O., J.N.S.), Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands; and Department of Pharmacology and Toxicology, Radboudumc, Nijmegen, The Netherlands (S.N.W.)
| | - Dicky J Lindenbergh-Kortleve
- Intensive Care and Department of Pediatric Surgery (M.G.M., B.E.A.K., B.D.G., D.T., S.N.W.), and Department of Pediatrics (D.J.L.-K., Y.S.-O., J.N.S.), Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands; and Department of Pharmacology and Toxicology, Radboudumc, Nijmegen, The Netherlands (S.N.W.)
| | - Ytje Simons-Oosterhuis
- Intensive Care and Department of Pediatric Surgery (M.G.M., B.E.A.K., B.D.G., D.T., S.N.W.), and Department of Pediatrics (D.J.L.-K., Y.S.-O., J.N.S.), Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands; and Department of Pharmacology and Toxicology, Radboudumc, Nijmegen, The Netherlands (S.N.W.)
| | - Bianca D van Groen
- Intensive Care and Department of Pediatric Surgery (M.G.M., B.E.A.K., B.D.G., D.T., S.N.W.), and Department of Pediatrics (D.J.L.-K., Y.S.-O., J.N.S.), Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands; and Department of Pharmacology and Toxicology, Radboudumc, Nijmegen, The Netherlands (S.N.W.)
| | - Dick Tibboel
- Intensive Care and Department of Pediatric Surgery (M.G.M., B.E.A.K., B.D.G., D.T., S.N.W.), and Department of Pediatrics (D.J.L.-K., Y.S.-O., J.N.S.), Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands; and Department of Pharmacology and Toxicology, Radboudumc, Nijmegen, The Netherlands (S.N.W.)
| | - Janneke N Samsom
- Intensive Care and Department of Pediatric Surgery (M.G.M., B.E.A.K., B.D.G., D.T., S.N.W.), and Department of Pediatrics (D.J.L.-K., Y.S.-O., J.N.S.), Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands; and Department of Pharmacology and Toxicology, Radboudumc, Nijmegen, The Netherlands (S.N.W.)
| | - Saskia N de Wildt
- Intensive Care and Department of Pediatric Surgery (M.G.M., B.E.A.K., B.D.G., D.T., S.N.W.), and Department of Pediatrics (D.J.L.-K., Y.S.-O., J.N.S.), Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands; and Department of Pharmacology and Toxicology, Radboudumc, Nijmegen, The Netherlands (S.N.W.)
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10
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USP18 Sensitivity of Peptide Transporters PEPT1 and PEPT2. PLoS One 2015; 10:e0129365. [PMID: 26046984 PMCID: PMC4457862 DOI: 10.1371/journal.pone.0129365] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 05/07/2015] [Indexed: 11/20/2022] Open
Abstract
USP18 (Ubiquitin-like specific protease 18) is an enzyme cleaving ubiquitin from target proteins. USP18 plays a pivotal role in antiviral and antibacterial immune responses. On the other hand, ubiquitination participates in the regulation of several ion channels and transporters. USP18 sensitivity of transporters has, however, never been reported. The present study thus explored, whether USP18 modifies the activity of the peptide transporters PEPT1 and PEPT2, and whether the peptide transporters are sensitive to the ubiquitin ligase Nedd4-2. To this end, cRNA encoding PEPT1 or PEPT2 was injected into Xenopus laevis oocytes without or with additional injection of cRNA encoding USP18. Electrogenic peptide (glycine-glycine) transport was determined by dual electrode voltage clamp. As a result, in Xenopus laevis oocytes injected with cRNA encoding PEPT1 or PEPT2, but not in oocytes injected with water or with USP18 alone, application of the dipeptide gly-gly (2 mM) was followed by the appearance of an inward current (Igly-gly). Coexpression of USP18 significantly increased Igly-gly in both PEPT1 and PEPT2 expressing oocytes. Kinetic analysis revealed that coexpression of USP18 increased maximal Igly-gly. Conversely, overexpression of the ubiquitin ligase Nedd4-2 decreased Igly-gly. Coexpression of USP30 similarly increased Igly-gly in PEPT1 expressing oocytes. In conclusion, USP18 sensitive cellular functions include activity of the peptide transporters PEPT1 and PEPT2.
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11
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Hu K, Feng L, Jiang W, Liu Y, Jiang J, Li S, Zhou X. Oxidative damage repair by glutamine in fish enterocytes. FISH PHYSIOLOGY AND BIOCHEMISTRY 2014; 40:1437-1445. [PMID: 24777750 DOI: 10.1007/s10695-014-9938-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 04/04/2014] [Indexed: 06/03/2023]
Abstract
Fish intestine is very sensitive to oxidative damage. Repair of damaged enterocytes may be involved to restore normal function of fish intestine. However, studies of fish enterocyte repair are scarce. The present study aimed to investigate the potential repair role of glutamine after a H2O2 challenge. In this study, fish enterocytes were post-treated with graded levels of glutamine (0, 4, 8, 12 and 20 mM of glutamine) after expose to 100 μM H2O2. The basal control cells were kept in the glutamine-free minimum essential medium only. Results showed that the H2O2-induced decreases in 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide optical density, alkaline phosphatase and Na(+), K(+)-ATPase activities were completely restored by subsequent glutamine treatments. In addition, cellular injury (lactate dehydrogenase), lipid peroxidation (malondialdehyde) and protein oxidation (protein carbonyls) caused by H2O2 were reversed by subsequent glutamine treatments. Furthermore, the H2O2-induced decreases in glutathione contents, glutathione reductase, superoxide dismutase and glutathione peroxidase activities were completely restored by subsequent glutamine treatments. In summary, the present study indicated that glutamine improved the repair activity in fish enterocytes after challenge with H2O2.
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Affiliation(s)
- Kai Hu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China
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12
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Ito H, Tamura M, Matsui H, Majima HJ, Indo HP, Hyodo I. Reactive oxygen species involved cancer cellular specific 5-aminolevulinic acid uptake in gastric epithelial cells. J Clin Biochem Nutr 2014; 54:81-5. [PMID: 24688215 PMCID: PMC3947976 DOI: 10.3164/jcbn.13-98] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 11/26/2013] [Indexed: 01/18/2023] Open
Abstract
Photodynamic therapy and photodynamic diagnosis using 5-aminolevulinic acid (ALA) are clinically useful for cancer treatments. Cancer cells have been reported that 5-aminolevulinic acid is incorporated via peptide transporter 1, which is one of the membrane transport proteins, and has been reported to be significantly expressed in various gastrointestinal cancer cells such as Caco-2. However, the mechanism of this protein expression has not been elucidated. Concentration of reactive oxygen species (ROS) is higher in cancer cells in comparison with that of normal cells. We have previously reported that ROS derived from mitochondria is likely related to invasions and proliferations of cancer cells. Since 5-aminolevulinic acid is the most important precursor of heme which is necessary protein for cellular proliferations, mitochondrial ROS (mitROS) may be also related to peptide transporter 1 expressions. In this study, we used a rat gastric mucosal cell line RGM1 and its cancer-like mutated cell line RGK1, and we clarified the ALA uptake mechanism and its relations between mitROS and peptide transporter 1 expression in RGK1. We also used our self-established stable clone of cell which over-expresses manganese superoxide dismutase, a mitROS scavenger. We studied differences of the photodynamic therapy effects in these cells after ALA administrations to clear the influence of mitROS.
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Affiliation(s)
- Hiromu Ito
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Ten-nohdai, Tsukuba, Ibaraki 305-8575, Japan
| | - Masato Tamura
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Ten-nohdai, Tsukuba, Ibaraki 305-8575, Japan
| | - Hirofumi Matsui
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Ten-nohdai, Tsukuba, Ibaraki 305-8575, Japan
| | - Hideyuki J Majima
- Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Hiroko P Indo
- Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Ichinosuke Hyodo
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Ten-nohdai, Tsukuba, Ibaraki 305-8575, Japan
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13
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Geillinger KE, Kipp AP, Schink K, Röder PV, Spanier B, Daniel H. Nrf2 regulates the expression of the peptide transporter PEPT1 in the human colon carcinoma cell line Caco-2. Biochim Biophys Acta Gen Subj 2013; 1840:1747-54. [PMID: 24380877 DOI: 10.1016/j.bbagen.2013.12.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 12/20/2013] [Accepted: 12/20/2013] [Indexed: 12/30/2022]
Abstract
BACKGROUND PEPT1 is a rheogenic transport protein in the apical membrane of intestinal epithelial cells capable of transporting essentially all possible di- and tripeptides that are generated from the luminal protein breakdown. In addition, several anticancer, antimicrobial and antiviral drugs are taken up from the intestinal lumen via PEPT1 and therefore PEPT1 is a target for efficient drug delivery via prodrug approaches. Thus, understanding PEPT1 gene regulation is not only of importance for dietary adaptation but also for drug treatment. METHODS In silico analysis of the Pept1 promoter was performed using MatInspector. Pept1 promoter constructs were generated and cotransfected with an Nrf2 expression plasmid. Caco-2 cells were stimulated with Nrf2 inducers followed by electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (ChIP). Biological relevance was investigated using western blot analysis and transport activity assays. RESULTS Reporter gene assays showed transcriptional activation of the Pept1 promoter in response to Nrf2 overexpression. EMSA as well as ChIP analysis validated Nrf2 binding to the ARE located closest to the start codon (Pept1-ARE1). Induction of the Nrf2 pathway resulted in increased endogenous PEPT1 protein abundance as well as transport activity. Moreover, we demonstrate that also the induction of autophagy by MG132 resulted in elevated Nrf2 binding to Pept1-ARE1 and increased PEPT1 protein expression. CONCLUSION In summary, we identified a biologically active Nrf2 binding site within the Pept1 promoter which links Pept1 to the cellular defense program activated by Nrf2. GENERAL SIGNIFICANCE This study identifies Pept1 as an inducible target gene of the Nrf2 pathway.
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Affiliation(s)
- Kerstin E Geillinger
- ZIEL Research Center of Nutrition and Food Sciences, Biochemistry Unit, Technische Universität München, Gregor-Mendel-Str. 2, 85350 Freising, Germany.
| | - Anna P Kipp
- Department Biochemistry of Micronutrients, German Institute of Human Nutrition, Potsdam-Rehbruecke, Germany
| | - Kristin Schink
- ZIEL Research Center of Nutrition and Food Sciences, Biochemistry Unit, Technische Universität München, Gregor-Mendel-Str. 2, 85350 Freising, Germany
| | - Pia V Röder
- ZIEL Research Center of Nutrition and Food Sciences, Biochemistry Unit, Technische Universität München, Gregor-Mendel-Str. 2, 85350 Freising, Germany
| | - Britta Spanier
- ZIEL Research Center of Nutrition and Food Sciences, Biochemistry Unit, Technische Universität München, Gregor-Mendel-Str. 2, 85350 Freising, Germany
| | - Hannelore Daniel
- ZIEL Research Center of Nutrition and Food Sciences, Biochemistry Unit, Technische Universität München, Gregor-Mendel-Str. 2, 85350 Freising, Germany
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14
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Warsi J, Hosseinzadeh Z, Dong L, Pakladok T, Umbach AT, Bhavsar SK, Shumilina E, Lang F. Effect of Janus Kinase 3 on the Peptide Transporters PEPT1 and PEPT2. J Membr Biol 2013; 246:885-92. [DOI: 10.1007/s00232-013-9582-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 07/22/2013] [Indexed: 11/29/2022]
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15
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Ontogeny of dipeptide uptake and peptide transporter 1 (PepT1) expression along the gastrointestinal tract in the neonatal Yucatan miniature pig. Br J Nutr 2012; 110:275-81. [DOI: 10.1017/s0007114512005041] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The H+-coupled transporter, peptide transporter 1 (PepT1), is responsible for the uptake of dietary di- and tripeptides in the intestine. Using an in vivo continuously perfused gut loop model in Yucatan miniature pigs, we measured dipeptide disappearance from four 10 cm segments placed at equidistant sites along the length of the small intestine. Pigs were studied at 1, 2, 3 (suckling) and 6 weeks (post-weaning) postnatal age. Transport capability across the PepT1 transporter was assessed by measuring the disappearance of 3H-glycylsarcosine; real-time RT-PCR was also used to quantify PepT1 mRNA. Each of the regions of intestine studied demonstrated the capacity for dipeptide transport. There were no differences among age groups in transport rates measured in the most proximal intestine segment. Transport of 3H-glycylsarcosine was significantly higher in the ileal section in the youngest age group (1 week) compared with the other the suckling groups; however, all suckling piglet groups demonstrated lower ileal transport compared with the post-weaned pigs. Colonic PepT1 mRNA was maximal in the earliest weeks of development and decreased to its lowest point by week 6. These results suggest that peptide transport in the small intestine may be of importance during the first week of suckling and again with diet transition following weaning.
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16
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Rendic S, Guengerich FP. Update information on drug metabolism systems--2009, part II: summary of information on the effects of diseases and environmental factors on human cytochrome P450 (CYP) enzymes and transporters. Curr Drug Metab 2010; 11:4-84. [PMID: 20302566 PMCID: PMC4167379 DOI: 10.2174/138920010791110917] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2009] [Accepted: 02/22/2010] [Indexed: 12/14/2022]
Abstract
The present paper is an update of the data on the effects of diseases and environmental factors on the expression and/or activity of human cytochrome P450 (CYP) enzymes and transporters. The data are presented in tabular form (Tables 1 and 2) and are a continuation of previously published summaries on the effects of drugs and other chemicals on CYP enzymes (Rendic, S.; Di Carlo, F. Drug Metab. Rev., 1997, 29(1-2), 413-580., Rendic, S. Drug Metab. Rev., 2002, 34(1-2), 83-448.). The collected information presented here is as stated by the cited author(s), and in cases when several references are cited the latest published information is included. Inconsistent results and conclusions obtained by different authors are highlighted, followed by discussion of the major findings. The searchable database is available as an Excel file, for information about file availability contact the corresponding author.
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Affiliation(s)
- S Rendic
- University of Zagreb, Zagreb, Croatia.
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17
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Rubio-Aliaga I, Daniel H. Peptide transporters and their roles in physiological processes and drug disposition. Xenobiotica 2008; 38:1022-42. [PMID: 18668438 DOI: 10.1080/00498250701875254] [Citation(s) in RCA: 158] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
1. The peptide transporters belong to the peptide transporter (PTR) family and serve as integral membrane proteins for the cellular uptake of di- and tripeptides in the organism. By their ability also to transport peptidomimetics and other substrates with therapeutic activities or precursors of pharmacologically active agents, they are of considerable importance in pharmacology. 2. PEPT1 is the low-affinity, high-capacity transporter and is mainly expressed in the small intestine, whereas PEPT2 is the high-affinity, low-capacity transporter and has a broader distribution in the organism. 3. Targeted mouse models have revealed PEPT2 to be the dominant transporter for the reabsorption of di- and tripeptides and its pharmacological substrates in the organism, and for the removal of these substrates from the cerebrospinal fluid. Moreover, the peptide transporters undergo physiological and pharmacological regulation and, of great interest, are present in disease states where PEPT1 exhibits ectopic expression in colonic inflammation. 4. The paper reviews the structural characteristics of the peptide transporters, the structural requirements for substrates, the distribution of the peptide transporters in the organism, and finally their regulation in the organism in healthy and pathological situations.
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Affiliation(s)
- I Rubio-Aliaga
- Molecular Nutrition Unit, Technical University of Munich, Freising-Weihenstephan, Germany
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18
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Hindlet P, Bado A, Farinotti R, Buyse M. Long-Term Effect of Leptin on H+-Coupled Peptide Cotransporter 1 Activity and Expression in Vivo: Evidence in Leptin-Deficient Mice. J Pharmacol Exp Ther 2007; 323:192-201. [PMID: 17622573 DOI: 10.1124/jpet.107.125799] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The H+-coupled peptide cotransporter 1 (PepT1) mediates absorption of peptides and peptidomimetic drugs. Acute luminal leptin was reported to induce translocation of PepT1 to the enterocyte membrane in vitro and in vivo in the rat, resulting in enhanced peptide and peptidomimetic drug absorption. In this study, we analyzed chronic effects of leptin and leptin deficiency on PepT1 activity and expression in the small intestine. Wistar rats and ob/ob mice were used. Activity of PepT1 was determined by monitoring [3H]glycyl-sarcosine (Gly-Sar) transport using the jejunal loop method. The levels of PepT1 mRNA and protein were quantified by real-time quantitative reverse transcription-polymerase chain reaction and Western blot analysis, respectively. Induction of chronic hyperleptinemia in rats (1 microg/g/day for 7 days; subcutaneous continuous infusion), caused a significant 25% increase (P < 0.05 versus control) in Gly-Sar transport and uptake. This effect was associated with a significant 2-fold increase in the abundance of PepT1 protein and a 6-fold increase in the levels of PepT1 mRNA. In the leptin-deficient ob/ob mice, PepT1 activity and expression were significantly reduced, and replacement of leptin (10 microg/day for 7 days; subcutaneous continuous infusion) completely restored full PepT1 expression and activity. Moreover, we showed that a 7-day challenge of the Caco-2 cells with 0.2 nM leptin induced a significant increase in PepT1 activity and protein expression, arguing for a direct action. These data demonstrate, for the first time, an impaired activity/expression of PepT1 in leptin-deficient ob/ob mice that could be restored by leptin replacement. These findings may have relevance in modulation of dietary nitrogen supply and PepT1 substrate bioavailability in obesity.
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Affiliation(s)
- Patrick Hindlet
- Department of Clinical Pharmacy (Unité Propre de Recherche et de l'Enseignement Supérieur, Equipe d'Accueil 2706), Faculty of Pharmaceutical Sciences Paris XI, 5, rue Jean Baptiste Clément, 92296 Châtenay-Malabry, France.
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19
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Vilela RM, Lands LC, Chan HM, Azadi B, Kubow S. High hydrostatic pressure enhances whey protein digestibility to generate whey peptides that improve glutathione status in CFTR-deficient lung epithelial cells. Mol Nutr Food Res 2006; 50:1013-29. [PMID: 17054101 DOI: 10.1002/mnfr.200600074] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Whey protein isolates (WPI) may provide anti-inflammatory benefits to cystic fibrosis (CF), which could be mediated via peptides, as proteolytic digests of WPI enhance intracellular glutathione (GSH) concentrations. The objectives of this study were to investigate whether high hydrostatic pressure can (i) improve the in vitro digestibility of WPI; and (ii) generate low molecular weight (< 1 kDa) peptides from WPI hydrolysates that exert GSH-enhancing and anti-inflammatory properties in wild type and mutant CF transmembrane conductance regulator (CFTR) tracheal epithelial cells. Hydrostatic pressure processing enhanced the in vitro digestibility of WPI to proteolytic enzymes resulting in altered peptide profiles as assessed by CZE and GC-MS. The exposure of mutant CFTR cells to low molecular weight (< 1 kDa) peptides isolated from WPI hydrolysates exposed to pressure processing (pressurized WPI hydrolysates, pWPH), showed increased intracellular levels of reduced GSH and total GSH relative to treatment with peptides obtained from native WPI hydrolysates (nWPH). A tendency for decreased interleukin-8 secretion was associated with the pWPH and nWPH treatments in mutant CFTR cells, which was not observed in wild type cells. Hydrostatic pressure processing of whey proteins appears to enhance their impact on cellular GSH status in cells with the mutant CFTR condition.
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Affiliation(s)
- Regina Maria Vilela
- School of Dietetics and Human Nutrition, MacDonald Campus of McGill University, Ste. Anne de Bellevue, Quebec, Canada
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