101
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Figueroa-Lozano S, Akkerman R, Beukema M, van Leeuwen SS, Dijkhuizen L, de Vos P. 2′-Fucosyllactose impacts the expression of mucus-related genes in goblet cells and maintains barrier function of gut epithelial cells. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104630] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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102
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Yin X, Wu Y, Zhang S, Zhang T, Zhang G, Wang J. Transcriptomic profile of leg muscle during early growth and development in Haiyang yellow chicken. Arch Anim Breed 2021; 64:405-416. [PMID: 34584942 PMCID: PMC8461557 DOI: 10.5194/aab-64-405-2021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 05/25/2021] [Indexed: 11/30/2022] Open
Abstract
Skeletal muscle growth and development from embryo to
adult consists of a series of carefully regulated changes in gene
expression. This study aimed to identify candidate genes involved in chicken
growth and development and to investigate the potential regulatory
mechanisms of early growth in Haiyang yellow chicken. RNA sequencing was
used to compare the transcriptomes of chicken muscle tissues at four
developmental stages. In total, 6150 differentially expressed genes (DEGs)
(|fold change| ≥ 2; false discovery rate (FDR) ≤ 0.05) were detected by
pairwise comparison in female chickens. Functional analysis showed that the
DEGs were mainly involved in the processes of muscle growth and development
and cell differentiation. Many of the DEGs, such as MSTN,
MYOD1, MYF6, MYF5, and IGF1, were
related to chicken growth and development. The Kyoto
Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed that
the DEGs were significantly enriched in four pathways related to growth and
development: extracellular matrix
(ECM)–receptor interaction, focal adhesion, tight junction, and
insulin signalling pathways. A total of 42 DEGs assigned to these pathways
are potential candidate genes for inducing the differences in growth among
the four development stages, such as MYH1A, EGF, MYLK2,
MYLK4, and LAMB3. This study identified a
range of genes and several pathways that may be involved in regulating early
growth.
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Affiliation(s)
- Xuemei Yin
- School of Marine and Bioengineering, YanCheng Institute of Technology, Yancheng, China
| | - Yulin Wu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu, China.,Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, China
| | - Shanshan Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu, China.,Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, China
| | - Tao Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu, China.,Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, China
| | - Genxi Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu, China.,Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, China
| | - Jinyu Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu, China.,Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, China
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103
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Kramer Z, Kenessey I, Gángó A, Lendvai G, Kulka J, Tőkés AM. Cell polarity and cell adhesion associated gene expression differences between invasive micropapillary and no special type breast carcinomas and their prognostic significance. Sci Rep 2021; 11:18484. [PMID: 34531452 PMCID: PMC8446082 DOI: 10.1038/s41598-021-97347-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 08/18/2021] [Indexed: 12/11/2022] Open
Abstract
Invasive micropapillary carcinoma of the breast (IMPC) has been in the focus of several studies given its specific histology and clinicopathological course. We analysed mRNA expression profiles and the prognostic value of 43 genes involved in cell polarity, cell-adhesion and epithelial-mesenchymal transition (EMT) in IMPC tumors and compared them to invasive breast carcinomas of no special type (IBC-NST). IMPCs (36 cases), IBC-NSTs (36 cases) and mixed IMPC-IBC NSTs (8 cases) were investigated. mRNA expression level of selected genes were analysed using the NanoString nCounter Analysis System. Distant metastases free survival (DMFS) intervals were determined. Statistical analysis was performed using Statistica 13.5 software. Twelve genes showed significantly different expression in the IMPC group. There was no difference in DMFS according to histological type (IBC-NST vs. IMPC). High CLDN3, PALS1 and low PAR6 expression levels in the entire cohort were associated with shorter DMFS, and PALS1 was proven to be grade independent prognostic factor. Positive lymph node status was associated with higher levels of AKT1 expression. Differences in gene expression in IMPC versus IBC-NST may contribute to the unique histological appearance of IMPCs. No marked differences were observed in DMFS of the two groups. Altered gene expression in the mTOR signaling pathway in both tumor subtypes highlights the potential benefit from AKT/mTOR inhibitors in IMPCs similarly to IBC-NSTs.
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Affiliation(s)
- Zsófia Kramer
- 2nd Department of Pathology, Semmelweis University, Üllői Street 93, Budapest, 1091, Hungary
| | - István Kenessey
- 2nd Department of Pathology, Semmelweis University, Üllői Street 93, Budapest, 1091, Hungary
| | - Ambrus Gángó
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői Street 26, Budapest, 1085, Hungary
| | - Gábor Lendvai
- 2nd Department of Pathology, Semmelweis University, Üllői Street 93, Budapest, 1091, Hungary
| | - Janina Kulka
- 2nd Department of Pathology, Semmelweis University, Üllői Street 93, Budapest, 1091, Hungary.
| | - Anna-Mária Tőkés
- 2nd Department of Pathology, Semmelweis University, Üllői Street 93, Budapest, 1091, Hungary
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104
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Ross AM, Walsh DR, Cahalane RM, Marcar L, Mulvihill JJE. The effect of serum starvation on tight junctional proteins and barrier formation in Caco-2 cells. Biochem Biophys Rep 2021; 27:101096. [PMID: 34401532 PMCID: PMC8358646 DOI: 10.1016/j.bbrep.2021.101096] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/28/2021] [Accepted: 08/02/2021] [Indexed: 11/06/2022] Open
Abstract
Assessing the ability of pharmaceutics to cross biological barriers and reach the site-of-action requires faithful representation of these barriers in vitro. Difficulties have arisen in replicating in vivo resistance in vitro. This paper investigated serum starvation as a method to increase Caco-2 barrier stability and resistance. The effect of serum starvation on tight junction production was examined using transwell models; specifically, transendothelial electrical resistance (TEER), and the expression and localization of tight junction proteins, occludin and zonula occludens-1 (ZO-1), were studied using western blotting and immunofluorescence. Changing cells to serum-free media 2 days post-seeding resulted in TEER readings of nearly 5000 Ω cm2 but the TEER rapidly declined subsequently. Meanwhile, exchanging cells to serum-free media 4–6 days post-seeding produced barriers with resistance readings between 3000 and 4000 Ω cm2, which could be maintained for 18 days. This corresponded to an increase in occludin levels. Serum starvation as a means of barrier formation is simple, reproducible, and cost-effective. It could feasibly be implemented in a variety of pre-clinical pharmaceutical assessments of drug permeability across various biological barriers with the view to improving the clinical translation of novel therapeutics. Serum starvation increases the intracellular resistance of Caco-2 cells. Max TEER values of 4783 ± 610 Ω cm2 were achieved in serum free conditions. A barrier of 3000–4000 Ω cm2 could be maintained for up to 18 days. Serum starvation leads to a significant increase in occludin expression. Occludin levels correlate significantly with corresponding TEER values.
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Affiliation(s)
- Aisling M Ross
- Bioscience and Bioengineering Research (BioSciBer), Bernal Institute, University of Limerick, Ireland.,School of Engineering, University of Limerick, Ireland
| | - Darragh R Walsh
- Bioscience and Bioengineering Research (BioSciBer), Bernal Institute, University of Limerick, Ireland.,School of Engineering, University of Limerick, Ireland
| | - Rachel M Cahalane
- Bioscience and Bioengineering Research (BioSciBer), Bernal Institute, University of Limerick, Ireland.,School of Engineering, University of Limerick, Ireland
| | - Lynnette Marcar
- Bioscience and Bioengineering Research (BioSciBer), Bernal Institute, University of Limerick, Ireland.,Health Research Institute (HRI), University of Limerick, Ireland.,Education and Health Sciences, University of Limerick, Ireland
| | - John J E Mulvihill
- Bioscience and Bioengineering Research (BioSciBer), Bernal Institute, University of Limerick, Ireland.,School of Engineering, University of Limerick, Ireland.,Health Research Institute (HRI), University of Limerick, Ireland
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105
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Popova OP, Kuznetsova AV, Bogomazova SY, Ivanov AA. Claudins as biomarkers of differential diagnosis and prognosis of tumors. J Cancer Res Clin Oncol 2021; 147:2803-2817. [PMID: 34241653 DOI: 10.1007/s00432-021-03725-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 06/30/2021] [Indexed: 12/30/2022]
Abstract
Claudins are a superfamily of transmembrane proteins, the optimal expression and localization of which are important for the normal physiological function of the epithelium and any imbalance may have pathological consequences. Not only insufficient but also excessive production of claudins in cancer cells, as well as their aberrant localization, equally manifest the formation of a malignant phenotype. Many works are distinguished by contradictory data, which demonstrate the action of the same claudins both in the role of tumor-growth suppressors and promoters in the same cancers. The most important possible causes of significant discrepancies in the results of the works are a considerable variability of sampling and the absence of a consistent approach both to the assessment of the immune reactivity of claudins and to the differential analysis of their subcellular localization. Combined, these drawbacks hinder the histological assessment of the link between claudins and tumor progression. In particular, ambiguous expression of claudins in breast cancer subtypes, revealed by various authors in immunohistochemical analysis, not only fails to facilitate the identification of the claudin-low molecular subtype but rather complicates these efforts. Research into the role of claudins in carcinogenesis has undoubtedly confirmed the potential value of this class of proteins as significant biomarkers in some cancer types; however, the immunohistochemical approach to the assessment of claudins still has limitations, needs standardization, and, to date, has not reached a diagnostic or a prognostic value.
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Affiliation(s)
- Olga P Popova
- A.I. Evdokimov Moscow State University of Medicine and Dentistry, Ministry of Health of the Russian Federation, 20, Bld 1, Delegatskaya Street, Moscow, 127473, Russia
| | - Alla V Kuznetsova
- A.I. Evdokimov Moscow State University of Medicine and Dentistry, Ministry of Health of the Russian Federation, 20, Bld 1, Delegatskaya Street, Moscow, 127473, Russia.,Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 26 Vavilov Street, Moscow, 119334, Russia
| | - Svetlana Yu Bogomazova
- Department of Pathology, National Medical Research Treatment and Rehabilitation Centre, Ministry of Health of the Russian Federation, Ivankovskoe shosse, 3, Moscow, 125367, Russia
| | - Alexey A Ivanov
- A.I. Evdokimov Moscow State University of Medicine and Dentistry, Ministry of Health of the Russian Federation, 20, Bld 1, Delegatskaya Street, Moscow, 127473, Russia.
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106
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Herrera M, Molina P, Souza-Smith FM. Ethanol-induced lymphatic endothelial cell permeability via MAP-kinase regulation. Am J Physiol Cell Physiol 2021; 321:C104-C116. [PMID: 33909502 PMCID: PMC8321794 DOI: 10.1152/ajpcell.00039.2021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 04/20/2021] [Accepted: 04/20/2021] [Indexed: 11/22/2022]
Abstract
Chronic alcohol alters the immune system enhancing the susceptibility to inflammation, bacterial, and viral infections in alcohol users. We have shown that alcohol causes increased permeability of mesenteric lymphatic vessels in alcohol-fed rats. The mechanisms of alcohol-induced lymphatic leakage are unknown. Endothelial cell monolayer permeability is controlled by junctional proteins complexes called tight junctions (TJ) and adherens junctions (AJ), and each can be regulated by MAPK activation. We hypothesize that ethanol induces lymphatic endothelial cell (LEC) permeability via disruption of LEC TJ through MAPK activation. An in vitro model of rat LECs was used. Ethanol-supplemented medium was added at concentrations of 0, 25, and 50 mM to confluent cells. Resistance-based barrier function, transwell permeability, cell viability, TJ, AJ, and MAPK protein activity, TJ and AJ gene expressions, and the role of p38 MAPK in barrier function regulation were measured. Ethanol increased the permeability of LECs compared to controls that was not associated with decreased cell viability. LECs treated with 50 mM ethanol showed an increase in phosphorylated levels of p38. No significant changes in TJ and AJ gene or protein expressions were observed after ethanol treatment. p38 inhibition prevented ethanol-induced increases in permeability. These findings suggest that p38 may play a role in the regulation of ethanol-induced LEC permeability, but altered permeability may not be associated with decreased TJ or AJ protein expression. Further investigation into junctional protein localization is needed to better understand the effects of ethanol on lymphatic endothelial cell-to-cell contacts and hyperpermeability.
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Affiliation(s)
- Matthew Herrera
- Department of Physiology, Alcohol and Drug Abuse Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Patricia Molina
- Department of Physiology, Alcohol and Drug Abuse Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Flavia M Souza-Smith
- Department of Physiology, Alcohol and Drug Abuse Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
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107
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Liu Y, Li X, Zhang Z, Zhang J, Xu J, Qiu Y, Ye C, Fu S, Wu Z, Hu CAA. Baicalin Protects Vascular Tight Junctions in Piglets During Glaesserella parasuis Infection. Front Vet Sci 2021; 8:671936. [PMID: 34250062 PMCID: PMC8267157 DOI: 10.3389/fvets.2021.671936] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/17/2021] [Indexed: 01/10/2023] Open
Abstract
Glaesserella parasuis (G. parasuis) can cause Glässer's disease and severely affect swine industry worldwide. This study is an attempt to address the issue of the capability of G. parasuis to damage the vascular barrier and the effects of baicalin on vascular tight junctions (TJ) in order to investigate the interactions between the pathogen and the porcine vascular endothelium. Piglets were challenged with G. parasuis and treated with or without baicalin. The expressions of vascular TJ genes were examined using RT-PCR. The distribution patterns of TJ proteins were detected by immunofluorescence. The involved signaling pathways were determined by Western blot assays on related proteins. G. parasuis can downregulate TJ expression and disrupt the distribution of TJ proteins. Baicalin can alleviate the downregulation of vascular TJ mRNA, maintain the distribution, and prevent the abnormalities of TJ. These results provide ample evidence that baicalin has the capacity to protect vascular TJ damaged by G. parasuis through inhibiting PKC and MLCK/MLC pathway activation. As a result, baicalin is a promising candidate for application as a natural agent for the prevention and control of G. parasuis infection.
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Affiliation(s)
- Yu Liu
- Hubei key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Xiaoyi Li
- Hubei key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Zhaoran Zhang
- Hubei key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Jiacheng Zhang
- Hubei key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Jianfeng Xu
- Hubei key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Yinsheng Qiu
- Hubei key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Chun Ye
- Hubei key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Shulin Fu
- Hubei key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Zhongyuan Wu
- Hubei key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Chien-An Andy Hu
- Biochemistry and Molecular Biology, University of New Mexico School of Medicine, Albuquerque, NM, United States
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108
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Wu D, Fan Z, Li J, Zhang Y, Wang C, Xu Q, Wang L. Evaluation of Alpha-Ketoglutarate Supplementation on the Improvement of Intestinal Antioxidant Capacity and Immune Response in Songpu Mirror Carp ( Cyprinus carpio) After Infection With Aeromonas hydrophila. Front Immunol 2021; 12:690234. [PMID: 34220849 PMCID: PMC8250152 DOI: 10.3389/fimmu.2021.690234] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 06/04/2021] [Indexed: 11/24/2022] Open
Abstract
As an intermediate substance of the tricarboxylic acid cycle and a precursor substance of glutamic acid synthesis, the effect of alpha-ketoglutarate on growth and protein synthesis has been extensively studied. However, its prevention and treatment of pathogenic bacteria and its mechanism have not yet been noticed. To evaluate the effects of alpha-ketoglutarate on intestinal antioxidant capacity and immune response of Songpu mirror carp, a total of 360 fish with an average initial weight of 6.54 ± 0.08 g were fed diets containing alpha-ketoglutarate with 1% for 8 weeks. At the end of the feeding trial, the fish were challenged with Aeromonas hydrophila for 2 weeks. The results indicated that alpha-ketoglutarate supplementation significantly increased the survival rate of carp after infection with Aeromonas hydrophila (P < 0.05), and the contents of immune digestion enzymes including lysozyme, alkaline phosphatase and the concentration of complement C4 were markedly enhanced after alpha-ketoglutarate supplementation (P < 0.05). Also, appropriate alpha-ketoglutarate increased the activities of total antioxidant capacity and catalase and prevented the up-regulation in the mRNA expression levels of pro-inflammatory cytokines including tumor necrosis factor-α, interleukin-1β, interleukin-6, and interleukin-8 (P < 0.05). Furthermore, the mRNA expression levels of toll-like receptor 4 (TLR4), and nuclear factor kappa-B (NF-κB) were strikingly increased after infection with Aeromonas hydrophila (P < 0.05), while the TLR4 was strikingly decreased with alpha-ketoglutarate supplementation (P < 0.05). Moreover, the mRNA expression levels of tight junctions including claudin-1, claudin-3, claudin-7, claudin-11 and myosin light chain kinases (MLCK) were upregulated after alpha-ketoglutarate supplementation (P < 0.05). In summary, the appropriate alpha-ketoglutarate supplementation could increase survival rate, strengthen the intestinal enzyme immunosuppressive activities, antioxidant capacities and alleviate the intestinal inflammation, thereby promoting the intestinal immune responses and barrier functions of Songpu mirror carp via activating TLR4/MyD88/NF-κB and MLCK signaling pathways after infection with Aeromonas hydrophila.
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Affiliation(s)
- Di Wu
- Key Laboratory of Aquatic Animal Diseases and Immune Technology of Heilongjiang Province, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China
| | - Ze Fan
- Key Laboratory of Aquatic Animal Diseases and Immune Technology of Heilongjiang Province, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China
| | - Jinnan Li
- Key Laboratory of Aquatic Animal Diseases and Immune Technology of Heilongjiang Province, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China
| | - Yuanyuan Zhang
- Key Laboratory of Aquatic Animal Diseases and Immune Technology of Heilongjiang Province, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China
| | - Chang'an Wang
- Key Laboratory of Aquatic Animal Diseases and Immune Technology of Heilongjiang Province, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China
| | - Qiyou Xu
- School of Life Science, Huzhou University, Huzhou, China
| | - Liansheng Wang
- Key Laboratory of Aquatic Animal Diseases and Immune Technology of Heilongjiang Province, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China
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109
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Le Phan TH, Park SY, Jung HJ, Kim MW, Cho E, Shim KS, Shin E, Yoon JH, Maeng HJ, Kang JH, Oh SH. The Role of Processed Aloe vera Gel in Intestinal Tight Junction: An In Vivo and In Vitro Study. Int J Mol Sci 2021; 22:ijms22126515. [PMID: 34204534 PMCID: PMC8235210 DOI: 10.3390/ijms22126515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 06/14/2021] [Indexed: 11/25/2022] Open
Abstract
Leaky gut is a condition of increased paracellular permeability of the intestine due to compromised tight junction barriers. In recent years, this affliction has drawn the attention of scientists from different fields, as a myriad of studies prosecuted it to be the silent culprit of various immune diseases. Due to various controversies surrounding its culpability in the clinic, approaches to leaky gut are restricted in maintaining a healthy lifestyle, avoiding irritating factors, and practicing alternative medicine, including the consumption of supplements. In the current study, we investigate the tight junction-modulating effects of processed Aloe vera gel (PAG), comprising 5–400-kD polysaccharides as the main components. Our results show that oral treatment of 143 mg/kg PAG daily for 10 days improves the age-related leaky gut condition in old mice, by reducing their individual urinal lactulose/mannitol (L/M) ratio. In concordance with in vivo experiments, PAG treatment at dose 400 μg/mL accelerated the polarization process of Caco-2 monolayers. The underlying mechanism was attributed to enhancement in the expression of intestinal tight junction-associated scaffold protein zonula occludens (ZO)-1 at the translation level. This was induced by activation of the MAPK/ERK signaling pathway, which inhibits the translation repressor 4E-BP1. In conclusion, we propose that consuming PAG as a complementary food has the potential to benefit high-risk patients.
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Affiliation(s)
- Thu Han Le Phan
- College of Pharmacy, Gachon University, Incheon 21936, Korea; (T.H.L.P.); (H.J.J.); (J.-H.Y.); (H.-J.M.)
| | - Se Yong Park
- College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea; (S.Y.P.); (M.W.K.)
| | - Hyun Jin Jung
- College of Pharmacy, Gachon University, Incheon 21936, Korea; (T.H.L.P.); (H.J.J.); (J.-H.Y.); (H.-J.M.)
| | - Min Woo Kim
- College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea; (S.Y.P.); (M.W.K.)
| | - Eunae Cho
- Univera Co., Ltd., Seoul 04782, Korea; (E.C.); (K.-S.S.); (E.S.)
| | - Kyu-Suk Shim
- Univera Co., Ltd., Seoul 04782, Korea; (E.C.); (K.-S.S.); (E.S.)
| | - Eunju Shin
- Univera Co., Ltd., Seoul 04782, Korea; (E.C.); (K.-S.S.); (E.S.)
| | - Jin-Ha Yoon
- College of Pharmacy, Gachon University, Incheon 21936, Korea; (T.H.L.P.); (H.J.J.); (J.-H.Y.); (H.-J.M.)
| | - Han-Joo Maeng
- College of Pharmacy, Gachon University, Incheon 21936, Korea; (T.H.L.P.); (H.J.J.); (J.-H.Y.); (H.-J.M.)
| | - Ju-Hee Kang
- College of Pharmacy, Gachon University, Incheon 21936, Korea; (T.H.L.P.); (H.J.J.); (J.-H.Y.); (H.-J.M.)
- Correspondence: (J.-H.K.); (S.H.O.); Tel./Fax: +82-32-820-4929 (S.H.O.)
| | - Seung Hyun Oh
- College of Pharmacy, Gachon University, Incheon 21936, Korea; (T.H.L.P.); (H.J.J.); (J.-H.Y.); (H.-J.M.)
- Correspondence: (J.-H.K.); (S.H.O.); Tel./Fax: +82-32-820-4929 (S.H.O.)
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110
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Superoxide Dismutase 3-Transduced Mesenchymal Stem Cells Preserve Epithelial Tight Junction Barrier in Murine Colitis and Attenuate Inflammatory Damage in Epithelial Organoids. Int J Mol Sci 2021; 22:ijms22126431. [PMID: 34208517 PMCID: PMC8233984 DOI: 10.3390/ijms22126431] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/04/2021] [Accepted: 06/11/2021] [Indexed: 01/08/2023] Open
Abstract
Superoxide dismutase 3 (SOD3), also known as extracellular superoxide dismutase, is an enzyme that scavenges reactive oxygen species (ROS). It has been reported that SOD3 exerts anti-inflammatory abilities in several immune disorders. However, the effect of SOD3 and the underlying mechanism in inflammatory bowel disease (IBD) have not been uncovered. Therefore, in the present study, we investigated whether SOD3 can protect intestinal cells or organoids from inflammation-mediated epithelial damage. Cells or mice were treated with SOD3 protein or SOD3-transduced mesenchymal stem cells (MSCs). Caco-2 cells or intestinal organoids stimulated with pro-inflammatory cytokines were used to evaluate the protective effect of SOD3 on epithelial junctional integrity. Dextran sulfate sodium (DSS)-induced colitis mice received SOD3 or SOD3-transduced MSCs (SOD3-MSCs), and were assessed for severity of disease and junctional protein expression. The activation of the mitogen-activated protein kinase (MAPK) pathway and elevated expression of cytokine-encoding genes decreased in TNF-α-treated Caco-2 cells or DSS-induced colitis mice when treated with SOD3 or SOD3-MSCs. Moreover, the SOD3 supply preserved the expression of tight junction (ZO-1, occludin) or adherence junction (E-cadherin) proteins when inflammation was induced. SOD3 also exerted a protective effect against cytokine- or ROS-mediated damage to intestinal organoids. These results indicate that SOD3 can effectively alleviate enteritis symptoms by maintaining the integrity of epithelial junctions and regulating inflammatory- and oxidative stress.
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111
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Lu L, Lu T, Shen J, Lv X, Wei W, Wang H, Xue X. Alisol A 24-acetate protects against brain microvascular endothelial cells injury through inhibiting miR-92a-3p/tight junctions axis. Aging (Albany NY) 2021; 13:15353-15365. [PMID: 34086605 PMCID: PMC8221311 DOI: 10.18632/aging.203094] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 05/11/2021] [Indexed: 12/18/2022]
Abstract
Blood brain barrier (BBB) dysfunction developed with aging is related to brain microvascular endothelial cells (BMECs) injury and losses of tight junctions (TJs). In the present study, we found that Alisol A 24-acetate (AA), a natural compound frequently used as treatment against vascular diseases was essential for BMECs injury and TJs degradation. Our experimental results showed that AA enhanced cell viability and increased zonula occludens-1 (ZO-1), claudin-5, and occludin expression in the oxygen-glucose deprivation (OGD)-induced BMECs. The exploration of the underlying mechanism revealed that AA restrained miR-92a-3p, a noncoding RNA involved in endothelial cells senescence and TJs impairment. To test the role of the miR-92a-3p in BMECs, the cells were transfected with miR-92a-3p mimics and inhibitor. The results showed that miR-92a-3p mimics inhibited cell viability and elevated lactate dehydrogenase (LDH) levels as well as suppressed ZO-1, claudin-5 and occludin expression, while the miR-92a-3p inhibitor reversed the above results. These findings were similar to the therapeutic effects of AA in the OGD-induced BMECs. Bioinformatics analysis and dual-luciferase assay confirmed ZO-1 and occludin were the target genes of miR-92a-3p mediated AA protective roles. In summary, the data demonstrated that AA protected against BMECs damage and TJs loss through the inhibition of miR-92a-3p expression. This provided evidence for AA application in aging-associated BBB protection.
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Affiliation(s)
- Lu Lu
- The Affiliated Rehabilitation Hospital, Fujian University of Traditional Chinese Medicine, Fuzhou 350003, China
| | - Taotao Lu
- The Affiliated Rehabilitation Hospital, Fujian University of Traditional Chinese Medicine, Fuzhou 350003, China.,College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou 350112, China
| | - Julian Shen
- The Affiliated Rehabilitation Hospital, Fujian University of Traditional Chinese Medicine, Fuzhou 350003, China
| | - Xinru Lv
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou 350112, China
| | - Wei Wei
- The Affiliated Rehabilitation Hospital, Fujian University of Traditional Chinese Medicine, Fuzhou 350003, China
| | - Hong Wang
- The Affiliated Rehabilitation Hospital, Fujian University of Traditional Chinese Medicine, Fuzhou 350003, China
| | - Xiehua Xue
- The Affiliated Rehabilitation Hospital, Fujian University of Traditional Chinese Medicine, Fuzhou 350003, China
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112
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Wu YH, Xu H, Yao QT, Liu SH, Yakupu A, Lu LD, Shi L. Effect of ionizing radiation on the secretion of the paracellular pathway in rat submandibular glands. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2021; 39:267-273. [PMID: 34041874 DOI: 10.7518/hxkq.2021.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
OBJECTIVES This study aims to investigate the effects of ionizing radiation on the secretion of the paracellular pathway in rat submandibular glands (SMGs) and reveal the changes in the tight junction (TJ) protein claudin-4. METHODS A total of 24 Wistar rats were randomly divided into control and irradiation groups. The irradiation groups were further divided into 1, 4, and 12 weeks groups after irradiation. One-time 20 Gy irradiation was given to the SMG area on the experimental side of the irradiation group. At 1, 4, and 12 weeks after irradiation, the secretion of SMGs was measured using the Schirmer's test. The pathological changes in the gland tissues were observed under light microscopy after hematoxylin⁃eosin (HE) staining. The changes in the TJ ultrastructure were observed under transmission electron microscopy. The immunofluorescence staining and Western blot were used to detect the expression levels of muscarinic acetylcholine M3 receptor, aquaporin 5 (AQP5), and claudin-4 protein. RESULTS At 1, 4, and 12 weeks after irradiation, the secretion of SMGs in the irradiation group was significantly decreased and lower than that in the control group (P<0.01). At 1 week, the interstitial edema was observed in SMG tissues. Nuclear pyknosis, decreased number of acinar cells, and small focal necrosis with inflammatory infiltration were also observed over time. However, these changes were most evident at 12 weeks after irradiation. In the irradiation group, the TJ ultrastructure of glands at different times appeared to be fuzzy, collapsed, and had decreased electron density. Moreover, the width of TJs was remarkably decreased (P<0.01). The expression levels of M3 and AQP5 were decreased in a time-dependent manner, and the fluorescence intensity was significantly reduced after irradiation. However, the expression levels and fluorescence intensity of claudin-4 were enhanced in different degrees. CONCLUSIONS The changes in the TJ structure, the upregulation of the claudin-4 expression, and the damage in the paracellular pathway were involved in the hyposecretion of SMGs after irradiation.
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Affiliation(s)
- Yan-Hui Wu
- Xinjiang Medical University, Urumqi 830054, China
| | - Hui Xu
- Dept. of Oral and Maxillofacial Surgery, People,s Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
| | | | - Shao-Hua Liu
- Dept. of Oral and Maxillofacial Surgery, Qilu Hospital of Shandong University, Jinan 250012, China.,Institute of Stomatology, Shandong University, Jinan 250012, China
| | | | - Li-Dan Lu
- Xinjiang Medical University, Urumqi 830054, China
| | - Liang Shi
- Dept. of Oral and Maxillofacial Surgery, Qilu Hospital of Shandong University, Jinan 250012, China.,Institute of Stomatology, Shandong University, Jinan 250012, China
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113
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Shu Y, He J, Zhang H, Liu G, Li S, Deng S, Wu H. Dynamic transcriptome and histomorphology analysis of developmental traits of hindlimb thigh muscle from Odorrana tormota and its adaptability to different life history stages. BMC Genomics 2021; 22:369. [PMID: 34016051 PMCID: PMC8138932 DOI: 10.1186/s12864-021-07677-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 05/05/2021] [Indexed: 11/10/2022] Open
Abstract
Background Systematic studies on the development and adaptation of hindlimb muscles in anura amphibians are rare. Here, we integrated analysis of transcriptome and histomorphological data for the hindlimb thigh muscle of Odorrana tormota (concave-eared torrent frog) at different developmental stages, to uncover the developmental traits of hindlimb thigh muscle from O. tormota and its adaptability to different life history stages. Results The development of hindlimb thigh muscle from O. tormota has the following characteristics. Before metamorphosis, myogenous cells proliferate and differentiate into myotubes, and form 11 muscle groups at G41; Primary myofibers and secondary myofibers appeared during metamorphosis; 11 muscle groups differentiated continuously to form myofibers, accompanied by myofibers hypertrophy after metamorphosis; During the growth process of O. tormota from G42 to G46, there were differences between the sexes in the muscle groups that differentiate into muscle fibers, indicating that there was sexual dimorphism in the hindlimb thigh muscles of O. tormota at the metamorphosis stages. Some genes and pathways related to growth, development, and movement ability of O. tormota at different developmental stages were obtained. In addition, some pathways associated with adaptation to metamorphosis and hibernation also were enriched. Furthermore, integrated analysis of the number of myofibers and transcriptome data suggested that myofibers of specific muscle groups in the hindlimbs may be degraded through lysosome and ubiquitin pathways to transform into energy metabolism and other energy-related substances to meet the physiological needs of hibernation. Conclusions These results provide further understanding the hindlimb thigh muscle development pattern of frogs and their adaption to life history stages. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07677-0.
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Affiliation(s)
- Yilin Shu
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu, China.,Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, Wuhu, China
| | - Jun He
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu, China.,Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, Wuhu, China
| | - Huijuan Zhang
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu, China.,Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, Wuhu, China
| | - Guangxuan Liu
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu, China.,Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, Wuhu, China
| | - Shikun Li
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu, China.,Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, Wuhu, China
| | - Shuaitao Deng
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu, China.,Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, Wuhu, China
| | - Hailong Wu
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu, China. .,Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, Wuhu, China.
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Park SY, Jang H, Kim SY, Kim D, Park Y, Kee SH. Expression of E-Cadherin in Epithelial Cancer Cells Increases Cell Motility and Directionality through the Localization of ZO-1 during Collective Cell Migration. Bioengineering (Basel) 2021; 8:bioengineering8050065. [PMID: 34064908 PMCID: PMC8151941 DOI: 10.3390/bioengineering8050065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/05/2021] [Accepted: 05/06/2021] [Indexed: 02/01/2023] Open
Abstract
Collective cell migration of epithelial tumor cells is one of the important factors for elucidating cancer metastasis and developing novel drugs for cancer treatment. Especially, new roles of E-cadherin in cancer migration and metastasis, beyond the epithelial–mesenchymal transition, have recently been unveiled. Here, we quantitatively examined cell motility using micropatterned free edge migration model with E-cadherin re-expressing EC96 cells derived from adenocarcinoma gastric (AGS) cell line. EC96 cells showed increased migration features such as the expansion of cell islands and straightforward movement compared to AGS cells. The function of tight junction proteins known to E-cadherin expression were evaluated for cell migration by knockdown using sh-RNA. Cell migration and straight movement of EC96 cells were reduced by knockdown of ZO-1 and claudin-7, to a lesser degree. Analysis of the migratory activity of boundary cells and inner cells shows that EC96 cell migration was primarily conducted by boundary cells, similar to leader cells in collective migration. Immunofluorescence analysis showed that tight junctions (TJs) of EC96 cells might play important roles in intracellular communication among boundary cells. ZO-1 is localized to the base of protruding lamellipodia and cell contact sites at the rear of cells, indicating that ZO-1 might be important for the interaction between traction and tensile forces. Overall, dynamic regulation of E-cadherin expression and localization by interaction with ZO-1 protein is one of the targets for elucidating the mechanism of collective migration of cancer metastasis.
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Affiliation(s)
- Song-Yi Park
- Department of Microbiology, College of Medicine, Korea University, Seoul 02841, Korea; (S.-Y.P.); (S.-Y.K.); (D.K.)
| | - Hwanseok Jang
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Korea; or
| | - Seon-Young Kim
- Department of Microbiology, College of Medicine, Korea University, Seoul 02841, Korea; (S.-Y.P.); (S.-Y.K.); (D.K.)
| | - Dasarang Kim
- Department of Microbiology, College of Medicine, Korea University, Seoul 02841, Korea; (S.-Y.P.); (S.-Y.K.); (D.K.)
| | - Yongdoo Park
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Korea; or
- Correspondence: (Y.P.); (S.-H.K.); Tel.: +82-2-2286-1460 (Y.P.); +82-2-2286-1165 (S.-H.K.)
| | - Sun-Ho Kee
- Department of Microbiology, College of Medicine, Korea University, Seoul 02841, Korea; (S.-Y.P.); (S.-Y.K.); (D.K.)
- Correspondence: (Y.P.); (S.-H.K.); Tel.: +82-2-2286-1460 (Y.P.); +82-2-2286-1165 (S.-H.K.)
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115
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Porcine Sapovirus-Induced Tight Junction Dissociation via Activation of RhoA/ROCK/MLC Signaling Pathway. J Virol 2021; 95:JVI.00051-21. [PMID: 33692204 PMCID: PMC8139687 DOI: 10.1128/jvi.00051-21] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Tight junctions (TJs) are a major barrier and also an important portal of entry for different pathogens. Porcine sapovirus (PSaV) induces early disruption of the TJ integrity of polarized LLC-PK cells, allowing it to bind to the buried occludin co-receptors hidden beneath the TJs on the basolateral surface. However, the signaling pathways involved in the PSaV-induced TJ dissociation are not yet known. Here, we found that the RhoA/ROCK/MLC signaling pathway was activated in polarized LLC-PK cells during the early infection of PSaV Cowden strain in the presence of bile acid. Specific inhibitors of RhoA, ROCK, and MLC restored PSaV-induced reduction of transepithelial resistance, increase of paracellular flux, intracellular translocation of occludin, and lateral membrane lipid diffusion. Moreover, each inhibitor significantly reduced PSaV replication, as evidenced by a reduction in viral protein synthesis, genome copy number, and progeny viruses. The PKC/MLCK and RhoA/ROCK/MYPT signaling pathways, known to dissociate TJs, were not activated during early PSaV infection. Among the above signaling pathways, the RhoA/ROCK/MLC signaling pathway was only activated by PSaV in the absence of bile acid, and specific inhibitors of this signaling pathway restored early TJ dissociation. Our findings demonstrate that PSaV binding to cell surface receptors activates the RhoA/ROCK/MLC signaling pathway, which in turn disrupts TJ integrity via the contraction of the actomyosin ring. Our study contributes to understanding how PSaV enters the cells and will aid in developing efficient and affordable therapies against PSaV and other calicivirus infections.IMPORTANCEPorcine sapovirus (PSaV), one of the most important enteric pathogens, is known to disrupt tight junction (TJ) integrity to expose its buried co-receptor occludin in polarized LLC-PK cells. However, the cellular signaling pathways that facilitate TJ dissociation are not yet completely understood. Here, we demonstrate that early infection of PSaV in polarized LLC-PK cells in either the presence or absence of bile acids activates the RhoA/ROCK/MLC signaling pathway, whose inhibitors reverse the early PSaV infection-induced early dissociation of TJs and reduce PSaV replication. However, early PSaV infection did not activate the PKC/MLCK and RhoA/ROCK/MYPT signaling pathways, which are also known to dissociate TJs. This study provides a better understanding of the mechanism involved in early PSaV infection-induced disruption of TJs, which is important for controlling or preventing PSaV and other calicivirus infections.
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Zong X, Cheng Y, Xiao X, Fu J, Wang F, Lu Z, Wang Y, Jin M. Protective effects of sulfated polysaccharide from Enterobacter cloacae Z0206 against DSS-induced intestinal injury via DNA methylation. Int J Biol Macromol 2021; 183:861-869. [PMID: 33940061 DOI: 10.1016/j.ijbiomac.2021.04.182] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 04/25/2021] [Accepted: 04/28/2021] [Indexed: 02/07/2023]
Abstract
We previously obtained and characterized a novel sulfated derivative of the exopolysaccharides from Enterobacter cloacae Z0206 (SEPS). This study aimed at investigating the effects and mechanism of SEPS against dextran sulfate sodium (DSS) induced intestinal injury. The results showed that SEPS increased the proliferation and survival of intestinal epithelial cells during DSS stimulation. Furthermore, SEPS maintained the barrier function and inflammatory response via JAK2 and MAPK signaling to protect against DSS-induced intestinal injury. Mechanistically, SEPS elevated the DNA methylation in the promoter region to negatively regulate the JAK2 and MAPKs expression. Thus, the current study shows the potential effects and mechanism of SEPS on DSS-induced intestinal epithelial cell injury.
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Affiliation(s)
- Xin Zong
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China; Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Ministry of Agriculture, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China
| | - Yuanzhi Cheng
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China; Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Ministry of Agriculture, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China
| | - Xiao Xiao
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China; Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Ministry of Agriculture, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China
| | - Jie Fu
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China; Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Ministry of Agriculture, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China
| | - Fengqin Wang
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China; Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Ministry of Agriculture, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China
| | - Zeqing Lu
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China; Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Ministry of Agriculture, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China
| | - Yizhen Wang
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China; Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Ministry of Agriculture, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China.
| | - Mingliang Jin
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China; Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Ministry of Agriculture, College of Animal Sciences, Zhejiang University, 310058 Hangzhou, PR China.
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117
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Ruan T, Sun J, Liu W, Prinz RA, Peng D, Liu X, Xu X. H1N1 Influenza Virus Cross-Activates Gli1 to Disrupt the Intercellular Junctions of Alveolar Epithelial Cells. Cell Rep 2021; 31:107801. [PMID: 32610119 DOI: 10.1016/j.celrep.2020.107801] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 11/26/2019] [Accepted: 06/01/2020] [Indexed: 02/09/2023] Open
Abstract
Influenza A virus (IAV) primarily infects the airway and alveolar epithelial cells and disrupts the intercellular junctions, leading to increased paracellular permeability. Although this pathological change plays a critical role in lung tissue injury and secondary infection, the molecular mechanism of IAV-induced damage to the alveolar barrier remains obscure. Here, we report that Gli1, a transcription factor in the sonic hedgehog (Shh) signaling pathway, is cross-activated by the MAP and PI3 kinase pathways in H1N1 virus (PR8)-infected A549 cells and in the lungs of H1N1 virus-infected mice. Gli1 activation induces Snail expression, which downregulates the expression of intercellular junction proteins, including E-cadherin, ZO-1, and Occludin, and increases paracellular permeability. Inhibition of the Shh pathway restores the levels of Snail and intercellular junction proteins in H1N1-infected cells. Our study suggests that Gli1 activation plays an important role in disrupting the intercellular junctions and in promoting the pathogenesis of H1N1 virus infections.
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Affiliation(s)
- Tao Ruan
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, Jiangsu Province, PRC
| | - Jing Sun
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, Jiangsu Province, PRC; Institute of Comparative Medicine, Yangzhou University, Yangzhou 225009, Jiangsu Province, PRC
| | - Wei Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, Jiangsu Province, PRC; Institute of Comparative Medicine, Yangzhou University, Yangzhou 225009, Jiangsu Province, PRC
| | - Richard A Prinz
- Department of Surgery, NorthShore University Health System, Evanston, IL 60201, USA
| | - Daxin Peng
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, PRC; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou 225009, Jiangsu Province, PRC
| | - Xiufan Liu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, PRC; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou 225009, Jiangsu Province, PRC
| | - Xiulong Xu
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, Jiangsu Province, PRC; Institute of Comparative Medicine, Yangzhou University, Yangzhou 225009, Jiangsu Province, PRC; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou 225009, Jiangsu Province, PRC; Institutes of Agricultural Science and Technology Development, Yangzhou University, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou 225009, Jiangsu Province, PRC.
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Yao QT, Wu YH, Liu SH, Song XB, Xu H, Li J, Shi L. Pilocarpine improves submandibular gland dysfunction in irradiated rats by downregulating the tight junction protein claudin-4. Oral Dis 2021; 28:1528-1538. [PMID: 33818901 DOI: 10.1111/odi.13870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/09/2021] [Accepted: 03/31/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To investigate the effects of radiation on paracellular pathway of rat submandibular glands (SMGs) and the mechanism of increasing secretion following treatment with pilocarpine. MATERIALS AND METHODS In situ irradiation models of SMGs in Wistar rats were conducted, and the glands were exposed to X-radiation at a single dose of 20 Gy. Pilocarpine was intraperitoneally injected 60 min prior to radiation and continuous 6 days postirradiation for a total of 7 days. Salivary secretion, histological changes, pro-inflammatory cytokines, alterations in tight junctions (TJs), and functional membrane proteins aquaporin-5 (AQP5) and claudin-4 mediated by the muscarinic acetylcholine M3 subtype receptor were determined at 1 and 12 weeks after irradiation. RESULTS Salivary secretion of the irradiated glands was reduced at 1 and 12 weeks. As well, acinar cell numbers, TJ width, and the levels of M3 receptor and AQP5 were decreased. In contrast, tumor necrosis factor-α, interleukin 6, interleukin 1α, and the expression of the TJ protein claudin-4 were significantly increased in irradiated SMGs. Notably, all the alterations were attenuated by pilocarpine treatment. CONCLUSIONS Pilocarpine could improve the secretory function of irradiated rat SMGs via reducing inflammation, ameliorating the structural injury of TJs, and attenuating the up-regulation of claudin-4 expression.
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Affiliation(s)
- Qing-Ting Yao
- Department of Oral and Maxillofacial Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China.,Postgraduate College of Xinjiang Medical University, Urumqi, China
| | - Yan-Hui Wu
- Department of Oral and Maxillofacial Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China.,Postgraduate College of Xinjiang Medical University, Urumqi, China
| | - Shao-Hua Liu
- Department of Oral and Maxillofacial Surgery, Qilu Hospital of Shandong University, Jinan, China.,Institute of Stomatology, Shandong University, Jinan, China
| | - Xiao-Bin Song
- Department of Oral and Maxillofacial Surgery, Qilu Hospital of Shandong University, Jinan, China.,Institute of Stomatology, Shandong University, Jinan, China
| | - Hui Xu
- Department of Oral and Maxillofacial Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Jun Li
- Department of Oral and Maxillofacial Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Liang Shi
- Department of Oral and Maxillofacial Surgery, Qilu Hospital of Shandong University, Jinan, China.,Institute of Stomatology, Shandong University, Jinan, China
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Konno T, Kohno T, Miyakawa M, Tanaka H, Kojima T. Pyk2 inhibitor prevents epithelial hyperpermeability induced by HMGB1 and inflammatory cytokines in Caco-2 cells. Tissue Barriers 2021; 9:1890526. [PMID: 33660567 DOI: 10.1080/21688370.2021.1890526] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The non-receptor protein tyrosine kinase 2β (Pyk2) phosphorylated tricellular tight junction (tTJ) molecules angulin-1/LSR and tricellulin (TRIC) and the inhibitor PF-431396 (PF43) suppress angulin-1/LSR and TRIC recruitment to tTJs. The disruption of the intestinal epithelial barrier by high mobility group box 1 (HMGB1) and the inflammatory cytokines TNFα and IFNγ contributes to downregulation of angulin-1/LSR and TRIC in 2.5D culture of Caco-2 cells as a novel model of inflammatory bowel disease (IBD). In the present study, to investigate the roles of Pyk2 phosphorylated angulin-1/LSR and TRIC in the intestinal epithelial barrier, 2D and 2.5D cultures of Caco-2 cells were treated with the Pyk2 inhibitor PF-43 with or without HMGB1, inflammatory cytokines TNFα and IFNγ. Treatment with PF-43 increased expression of angulin-1/LSR, phosphorylated AMPK and phosphorylated MAPK and decreased that of phosphorylated JNK, with upregulation of the epithelial barrier and cellular metabolism measured as basal oxygen consumption rate (OCR) and ATP production in 2D culture. Treatment with PF-43 prevented the downregulation of the epithelial barrier by HMGB1 and inflammatory cytokines in 2D culture. Treatment with PF-43 prevented the epithelial hyperpermeability induced by HMGB1 and inflammatory cytokines in 2.5D culture. In 2.5D culture, treatment with PF-43 inhibited the decreases of angulin-1/LSR, TRIC, pJNK, pAMPK and pMAPK induced by HMGB1 and the inflammatory cytokines. Treatment with PF-43 inhibited in part the induced phosphorylation of the serine of angulin-1/LSR and TRIC. Pyk2 inhibitor PF-43 may have potential for use in therapy for IBD via its actions with regard to phosphorylated tTJs and cellular metabolism.
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Affiliation(s)
- Takumi Konno
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takayuki Kohno
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Maki Miyakawa
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan.,Sapporo IBD Clinic, Sapporo, Japan
| | | | - Takashi Kojima
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
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Brunner J, Ragupathy S, Borchard G. Target specific tight junction modulators. Adv Drug Deliv Rev 2021; 171:266-288. [PMID: 33617902 DOI: 10.1016/j.addr.2021.02.008] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 02/07/2023]
Abstract
Intercellular tight junctions represent a formidable barrier against paracellular drug absorption at epithelia (e.g., nasal, intestinal) and the endothelium (e.g., blood-brain barrier). In order to enhance paracellular transport of drugs and increase their bioavailability and organ deposition, active excipients modulating tight junctions have been applied. First-generation of permeation enhancers (PEs) acted by unspecific interactions, while recently developed PEs address specific physiological mechanisms. Such target specific tight junction modulators (TJMs) have the advantage of a defined specific mechanism of action. To date, merely a few of these novel active excipients has entered into clinical trials, as their lack in safety and efficiency in vivo often impedes their commercialisation. A stronger focus on the development of such active excipients would result in an economic and therapeutic improvement of current and future drugs.
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Affiliation(s)
- Joël Brunner
- Section of Pharmaceutical Sciences, Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1211 Geneva, Switzerland
| | - Sakthikumar Ragupathy
- Section of Pharmaceutical Sciences, Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1211 Geneva, Switzerland
| | - Gerrit Borchard
- Section of Pharmaceutical Sciences, Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1211 Geneva, Switzerland.
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Zhang Q, Zheng M, Betancourt CE, Liu L, Sitikov A, Sladojevic N, Zhao Q, Zhang JH, Liao JK, Wu R. Increase in Blood-Brain Barrier (BBB) Permeability Is Regulated by MMP3 via the ERK Signaling Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6655122. [PMID: 33859779 PMCID: PMC8026308 DOI: 10.1155/2021/6655122] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/24/2020] [Accepted: 03/09/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND The blood-brain barrier (BBB) regulates the exchange of molecules between the brain and peripheral blood and is composed primarily of microvascular endothelial cells (BMVECs), which form the lining of cerebral blood vessels and are linked via tight junctions (TJs). The BBB is regulated by components of the extracellular matrix (ECM), and matrix metalloproteinase 3 (MMP3) remodels the ECM's basal lamina, which forms part of the BBB. Oxidative stress is implicated in activation of MMPs and impaired BBB. Thus, we investigated whether MMP3 modulates BBB permeability. METHODS Experiments included in vivo assessments of isoflurane anesthesia and dye extravasation from brain in wild-type (WT) and MMP3-deficient (MMP3-KO) mice, as well as in vitro assessments of the integrity of monolayers of WT and MMP3-KO BMVECs and the expression of junction proteins. RESULTS Compared to WT mice, measurements of isoflurane usage and anesthesia induction time were higher in MMP3-KO mice and lower in WT that had been treated with MMP3 (WT+MMP3), while anesthesia emergence times were shorter in MMP3-KO mice and longer in WT+MMP3 mice than in WT. Extravasation of systemically administered dyes was also lower in MMP3-KO mouse brains and higher in WT+MMP3 mouse brains, than in the brains of WT mice. The results from both TEER and Transwell assays indicated that MMP3 deficiency (or inhibition) increased, while MMP3 upregulation reduced barrier integrity in either BMVEC or the coculture. MMP3 deficiency also increased the abundance of TJs and VE-cadherin proteins in BMVECs, and the protein abundance declined when MMP3 activity was upregulated in BMVECs, but not when the cells were treated with an inhibitor of extracellular signal related-kinase (ERK). CONCLUSION MMP3 increases BBB permeability following the administration of isoflurane by upregulating the ERK signaling pathway, which subsequently reduces TJ and VE-cadherin proteins in BMVECs.
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Affiliation(s)
- Qin Zhang
- Department of Biological Sciences Division-Cardiology, University of Chicago, USA
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Mei Zheng
- Department of Biological Sciences Division-Cardiology, University of Chicago, USA
| | | | - Lifeng Liu
- Department of Biological Sciences Division-Cardiology, University of Chicago, USA
| | - Albert Sitikov
- Department of Biological Sciences Division-Cardiology, University of Chicago, USA
| | - Nikola Sladojevic
- Department of Biological Sciences Division-Cardiology, University of Chicago, USA
| | - Qiong Zhao
- Division of Cardiology, Department of Medicine, Inova Heart and Vascular Institute, USA
| | - John H. Zhang
- Center for Neuroscience Research, Loma Linda University, School of Medicine, USA
| | - James K. Liao
- Department of Biological Sciences Division-Cardiology, University of Chicago, USA
| | - Rongxue Wu
- Department of Biological Sciences Division-Cardiology, University of Chicago, USA
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Wu B, Li M, Li K, Hong W, Lv Q, Li Y, Xie S, Han J, Tian B. Cell penetrating peptide TAT-functionalized liposomes for efficient ophthalmic delivery of flurbiprofen: Penetration and its underlying mechanism, retention, anti-inflammation and biocompatibility. Int J Pharm 2021; 598:120405. [PMID: 33647409 DOI: 10.1016/j.ijpharm.2021.120405] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/02/2021] [Accepted: 02/13/2021] [Indexed: 11/15/2022]
Abstract
In treating eye diseases, topical administration on the ocular surface is the most convenient and acceptable route. However, the intraocular efficiency of non-invasive drug delivery systems is still considerably hampered by the eye's defense barriers. In this work, cell-penetrating peptide TAT-functionalized, flurbiprofen-loaded liposomes (TAT-FB-Lip) were designed to enable transcorneal drug delivery and prolong ocular surface retention. The corneal penetration-promoting properties of TAT-functionalized liposomes (TAT-Lip) were confirmed in vitro using a corneal permeability assay and the HCE-T cell sphere model and in vivo by aqueous humor pharmacokinetics assessment. TAT-Lip induced an increase in intracellular calcium ion concentration and membrane potential depolarization. F-actin images of HCE-T cells treated with TAT-Lip show the tight junctions between cells partly opened. The cellular internalization pathway mainly depended on the electrostatic interaction between TAT-Lip and the cell membrane, and there is a certain degree of energy dependence. The pharmacokinetics of flurbiprofen in tears demonstrated TAT-Lip could reduce the drug loss rate. Moreover, the anti-inflammatory effect of TAT-FB-Lip was enhanced by markedly suppressing PGE2, IL-6, and TNF-α production in tears and aqueous humor in a rabbit conjunctivitis model. In conclusion, this work demonstrates that TAT-Lip is an effective ocular drug carrier system that facilitates transcorneal delivery.
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Affiliation(s)
- Baohuan Wu
- School of Pharmacy, Binzhou Medical University, 346 Guanhai Road, Yantai 264003, PR China
| | - Mengshun Li
- School of Pharmacy, Binzhou Medical University, 346 Guanhai Road, Yantai 264003, PR China
| | - Keke Li
- School of Pharmacy, Binzhou Medical University, 346 Guanhai Road, Yantai 264003, PR China
| | - Wei Hong
- School of Pharmacy, Binzhou Medical University, 346 Guanhai Road, Yantai 264003, PR China
| | - Qingzhi Lv
- School of Pharmacy, Binzhou Medical University, 346 Guanhai Road, Yantai 264003, PR China
| | - Youjie Li
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, Shandong, PR China
| | - Shuyang Xie
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, Shandong, PR China
| | - Jingtian Han
- School of Pharmacy, Binzhou Medical University, 346 Guanhai Road, Yantai 264003, PR China.
| | - Baocheng Tian
- School of Pharmacy, Binzhou Medical University, 346 Guanhai Road, Yantai 264003, PR China.
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Zhang Q, Wang Y, Qu D, Yu J, Yang J. Role of HDAC6 inhibition in sepsis-induced acute respiratory distress syndrome (Review). Exp Ther Med 2021; 21:422. [PMID: 33747162 DOI: 10.3892/etm.2021.9866] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 02/01/2021] [Indexed: 12/12/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) induced by sepsis contributes remarkably to the high mortality rate observed in intensive care units, largely due to a lack of effective drug therapies. Histone deacetylase 6 (HDAC6) is a class-IIb deacetylase that modulates non-nuclear protein functions via deacetylation and ubiquitination. Importantly, HDAC6 has been shown to exert anti-cancer, anti-neurodegeneration, and immunological effects, and several HDAC6 inhibitors have now entered clinical trials. It has also been recently shown to modulate inflammation, and HDAC6 inhibition has been demonstrated to markedly suppress experimental sepsis. The present review summarizes the role of HDAC6 in sepsis-induced inflammation and endothelial barrier dysfunction in recent years. It is proposed that HDAC6 inhibition predominantly ameliorates sepsis-induced ARDS by directly attenuating inflammation, which modulates the innate and adaptive immunity, transcription of pro-inflammatory genes, and protects endothelial barrier function. HDAC6 inhibition protects against sepsis-induced ARDS, thereby making HDAC6 a promising therapeutic target. However, HDAC inhibition may be associated with adverse effects on the embryo sac and oocyte, necessitating further studies.
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Affiliation(s)
- Qinghua Zhang
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Yan Wang
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Danhua Qu
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Jinyan Yu
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Junling Yang
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
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Ragupathy S, Brunner J, Borchard G. Short peptide sequence enhances epithelial permeability through interaction with protein kinase C. Eur J Pharm Sci 2021; 160:105747. [PMID: 33582284 DOI: 10.1016/j.ejps.2021.105747] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 11/25/2020] [Accepted: 02/04/2021] [Indexed: 01/13/2023]
Abstract
We have identified a short peptide sequence (L-R5) acting as partial inhibitor of intracellular protein kinase C, capable of tight junction modulation in terms of reversible and non-toxic drug permeation enhancement. L-R5 is a pentapeptide with a cell-penetrating group at the N-terminus and of the sequence myristoyl-ARRWR. Apically applied in vitro, L-R5 transiently increased epithelial permeability within minutes, enhancing apical-to-basolateral (AB) transport of 4-kDa dextran and BCS class III drug naloxone. L-R5 was shown to be stable and effective at 37°C over a period of 24 hours. L-R5 was shown to be non-cytotoxic in consecutive exposure studies on primary human nasal epithelial cells by LDH release assay and ciliary beating frequency test. Finally, L-R5 by itself showed very low diffusion across epithelial monolayers, which is of advantage with regard to its expected negligible systemic bioavailability and side effects. Taken together, these data demonstrate the potential of short peptide partial inhibitor L-R5 to enhance the epithelial paracellular permeability via a reversible mechanism, and in a non-toxic manner.
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Affiliation(s)
- Sakthikumar Ragupathy
- Section of Pharmaceutical Sciences, Institute of Pharmaceutical Sciences of Western Switzerland (ISPSO) University of Geneva, CH-1211Geneva, Switzerland
| | - Joël Brunner
- Section of Pharmaceutical Sciences, Institute of Pharmaceutical Sciences of Western Switzerland (ISPSO) University of Geneva, CH-1211Geneva, Switzerland
| | - Gerrit Borchard
- Section of Pharmaceutical Sciences, Institute of Pharmaceutical Sciences of Western Switzerland (ISPSO) University of Geneva, CH-1211Geneva, Switzerland.
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125
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Metz JK, Wiegand B, Schnur S, Knoth K, Schneider-Daum N, Groß H, Croston G, Reinheimer TM, Lehr CM, Hittinger M. Modulating the Barrier Function of Human Alveolar Epithelial (hAELVi) Cell Monolayers as a Model of Inflammation. Altern Lab Anim 2021; 48:252-267. [DOI: 10.1177/0261192920983015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The incidence of inflammatory lung diseases such as acute respiratory distress syndrome (ARDS) remains an important problem, particularly in the present time with the Covid-19 pandemic. However, an adequate in vitro test system to monitor the barrier function of the alveolar epithelium during inflammation and for assessing anti-inflammatory drugs is urgently needed. Therefore, we treated human Alveolar Epithelial Lentivirus-immortalised cells (hAELVi cells) with the pro-inflammatory cytokines TNF-α (25 ng/ml) and IFN-γ (30 ng/ml), in the presence or absence of hydrocortisone (HC). While TNF-α and IFN-γ are known to reduce epithelial barrier properties, HC could be expected to protect the barrier function and result in an anti-inflammatory effect. We investigated the impact of anti-inflammatory/inflammatory treatment on transepithelial electrical resistance (TEER) and the apparent permeability coefficient (P app) of the low permeability marker sodium fluorescein (NaFlu). After incubating hAELVi cells for 48 hours with a combination of TNF-α and IFN-γ, there was a significant decrease in TEER and a significant increase in the P app. The presence of HC maintained the TEER values and barrier properties, so that no significant P app change was observed. By using hAELVi cells to study anti-inflammatory drugs in vitro, the need for animal experiments could be reduced and pulmonary drug development accelerated.
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Affiliation(s)
- Julia Katharina Metz
- PharmBioTec GmbH, Saarbrücken, Germany
- Department of Pharmacy, Saarland University, Saarbrücken, Germany
| | | | - Sabrina Schnur
- PharmBioTec GmbH, Saarbrücken, Germany
- Department of Pharmacy, Saarland University, Saarbrücken, Germany
| | | | - Nicole Schneider-Daum
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarbrücken, Germany
| | | | | | | | - Claus-Michael Lehr
- Department of Pharmacy, Saarland University, Saarbrücken, Germany
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarbrücken, Germany
| | - Marius Hittinger
- PharmBioTec GmbH, Saarbrücken, Germany
- 3RProducts Marius Hittinger, Blieskastel, Germany
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Luo Q, Lei X, Xu J, Jahangir A, He J, Huang C, Liu W, Cheng A, Tang L, Geng Y, Chen Z. An altered gut microbiota in duck-origin parvovirus infection on cherry valley ducklings is associated with mucosal barrier dysfunction. Poult Sci 2021; 100:101021. [PMID: 33677399 PMCID: PMC7940990 DOI: 10.1016/j.psj.2021.101021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 01/14/2021] [Accepted: 01/19/2021] [Indexed: 01/13/2023] Open
Abstract
Duck-origin parvovirus disease is an epidemic disease mainly caused by duck-origin goose parvovirus (D-GPV), which is characterized by beak atrophy and dwarfism syndrome. Its main symptoms are persistent diarrhea, skeletal dysplasia, and growth retardation. However, the pathogenesis of Cherry Valley ducks infected by D-GPV has not been studied thoroughly. To perceive the distribution of D-GPV in the intestinal tract, intestinal morphological development, intestinal permeability, inflammatory cytokines in Cherry Valley ducks, and expression of tight junction protein, the D-GPV infection was given intramuscularly. Illumina MiSeq sequencing technology was used to analyze the diversity and structure of ileum flora and content of short-chain fatty acids of its metabolites. To investigate the relationship between intestinal flora changes and intestinal barrier function after D-GPV infection on Cherry Valley ducks is of great theoretical and practical significance for further understanding the pathogenesis of D-GPV and the structure of intestinal flora in ducks. The results showed that D-GPV infection was accompanied by intestinal inflammation and barrier dysfunction. At this time, the decrease of a large number of beneficial bacteria and the content of short-chain fatty acids in intestinal flora led to the weakening of colonization resistance of the intestinal flora and the accumulation of potentially pathogenic bacteria, which would aggravate the negative effect of D-GPV damage to the intestinal tract. Furthermore, a significant increase in Unclassified_S24-7 and decrease in Streptococcus was observed in D-GPV persistent, indicating the disruption in the structure of gut microbiota. Notably, the shift of microbiota was associated with the transcription of tight-junction protein and immune-associated cytokines. These results indicate that altered ileum microbiota, intestinal barrier, and immune dysfunction are associated with D-GPV infection. Therefore, there is a relationship between the intestinal barrier dysfunction and dysbiosis caused by D-GPV, but the specific mechanism needs to be further explored.
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Affiliation(s)
- Qihui Luo
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Xinyu Lei
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Jing Xu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Asad Jahangir
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Junbo He
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Chao Huang
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Wentao Liu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Anchun Cheng
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Li Tang
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yi Geng
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Zhengli Chen
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.
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127
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Differentiated Caco-2 cell models in food-intestine interaction study: Current applications and future trends. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2020.11.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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128
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Mulak A. Bile Acids as Key Modulators of the Brain-Gut-Microbiota Axis in Alzheimer's Disease. J Alzheimers Dis 2021; 84:461-477. [PMID: 34569953 PMCID: PMC8673511 DOI: 10.3233/jad-210608] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2021] [Indexed: 12/11/2022]
Abstract
Recently, the concept of the brain-gut-microbiota (BGM) axis disturbances in the pathogenesis of Alzheimer's disease (AD) has been receiving growing attention. At the same time, accumulating data revealing complex interplay between bile acids (BAs), gut microbiota, and host metabolism have shed new light on a potential impact of BAs on the BGM axis. The crosstalk between BAs and gut microbiota is based on reciprocal interactions since microbiota determines BA metabolism, while BAs affect gut microbiota composition. Secondary BAs as microbe-derived neuroactive molecules may affect each of three main routes through which interactions within the BGM axis occur including neural, immune, and neuroendocrine pathways. BAs participate in the regulation of multiple gut-derived molecule release since their receptors are expressed on various cells. The presence of BAs and their receptors in the brain implies a direct effect of BAs on the regulation of neurological functions. Experimental and clinical data confirm that disturbances in BA signaling are present in the course of AD. Disturbed ratio of primary to secondary BAs as well as alterations in BA concertation in serum and brain samples have been reported. An age-related shift in the gut microbiota composition associated with its decreased diversity and stability observed in AD patients may significantly affect BA metabolism and signaling. Given recent evidence on BA neuroprotective and anti-inflammatory effects, new therapeutic targets have been explored including gut microbiota modulation by probiotics and dietary interventions, ursodeoxycholic acid supplementation, and use of BA receptor agonists.
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Affiliation(s)
- Agata Mulak
- Department of Gastroenterology and Hepatology, Wroclaw Medical University, Wroclaw, Poland
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129
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Hua Y, Wu J, Fu M, Liu J, Li X, Zhang B, Zhao W, Wan C. Enterohemorrhagic Escherichia coli Effector Protein EspF Interacts With Host Protein ANXA6 and Triggers Myosin Light Chain Kinase (MLCK)-Dependent Tight Junction Dysregulation. Front Cell Dev Biol 2020; 8:613061. [PMID: 33425920 PMCID: PMC7785878 DOI: 10.3389/fcell.2020.613061] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 12/02/2020] [Indexed: 01/06/2023] Open
Abstract
Enterohemorrhagic Escherichia coli (EHEC) O157:H7 is an important foodborne pathogen that can cause bloody diarrhea and hemolytic uremic syndrome (HUS) in humans. EspF is one of the best-characterized effector proteins secreted from the type three secretion system to hijack host cell functions. However, the crucial pathogen-host interactions and the basis for the intestinal barrier disruption during infections remain elusive. Our previous study screened and verified the interaction between host protein ANXA6 and EspF protein. Here, by fluorescence resonance energy transfer (FRET) and co-immunoprecipitation (CO-IP), we verified that EspF interacts with ANXA6 through its C-terminal domain. Furthermore, we found that both the constitutive expression of EspF or ANXA6 and the co-expression of EspF-ANXA6 could decrease the levels of tight junction (TJ) proteins ZO-1 and occludin, and disrupt the distribution of ZO-1. Moreover, we showed that EspF-ANXA6 activated myosin light chain kinase (MLCK), induced the phosphorylation of myosin light chain (MLC) and PKCα, and down-regulated the expression level of Calmodulin protein. Collectively, this study revealed a novel interaction between the host protein (ANXA6) and EspF. The binding of EspF to ANXA6 may perturb TJs in an MLCK-MLC-dependent manner, and thus may be involved in EHEC pathogenic function.
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Affiliation(s)
- Ying Hua
- Biosafety Level 3 Laboratory, Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou, China.,Key Laboratory of Tropical Disease Research of Guangdong Province, Guangzhou, China
| | - Jiali Wu
- Biosafety Level 3 Laboratory, Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Muqing Fu
- Biosafety Level 3 Laboratory, Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Jinyue Liu
- Biosafety Level 3 Laboratory, Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Xiaoxia Li
- Biosafety Level 3 Laboratory, Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Bao Zhang
- Biosafety Level 3 Laboratory, Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou, China.,Key Laboratory of Tropical Disease Research of Guangdong Province, Guangzhou, China
| | - Wei Zhao
- Biosafety Level 3 Laboratory, Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou, China.,Key Laboratory of Tropical Disease Research of Guangdong Province, Guangzhou, China
| | - Chengsong Wan
- Biosafety Level 3 Laboratory, Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou, China.,Key Laboratory of Tropical Disease Research of Guangdong Province, Guangzhou, China
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Richards LB, Li M, Folkerts G, Henricks PA, Garssen J, van Esch BC. Butyrate and Propionate Restore the Cytokine and House Dust Mite Compromised Barrier Function of Human Bronchial Airway Epithelial Cells. Int J Mol Sci 2020; 22:ijms22010065. [PMID: 33374733 PMCID: PMC7793466 DOI: 10.3390/ijms22010065] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/14/2020] [Accepted: 12/19/2020] [Indexed: 02/06/2023] Open
Abstract
Barrier dysfunction of airway epithelium contributes to the development of allergies, airway hyper-responsiveness and immunological respiratory diseases. Short-chain fatty acids (SCFA) enhance and restore the barrier function of the intestinal epithelium. This study investigated whether acetate, propionate and butyrate enhance the integrity of bronchial epithelial cells. Differentiating human bronchial epithelial cells (16HBE) grown on transwells were exposed to butyrate, propionate and acetate while trans-epithelial electrical resistance was monitored over time. Restorative effects of SCFA were investigated by subsequent incubation of cells with IL-4, IL-13 or house dust mite extract and SCFA. SCFA effects on IL-4-induced cytokine production and the expression of zonula occludens-1 (ZO-1) and Mitogen-activated protein kinases (MAPK) signalling pathways were investigated by ELISA and Western blot assays. Propionate and butyrate enhanced the barrier function of differentiating 16HBE cells and induced complete recovery of the barrier function after exposure to the above-mentioned stimuli. Butyrate decreased IL-4-induced IL-6 production. IL-4 decreased ZO-1 protein expression and induced phosphorylation of extracellular signal-regulated protein kinases 1/2 (ERK1/2) and c-Jun N-terminal kinases (JNK) in 16HBE cells, both of which could be restored by SCFA. SCFA showed prophylactic and restorative effects on airway epithelial barrier function, which might be induced by increased ZO-1 expression.
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Affiliation(s)
- Levi B. Richards
- Division of Pharmacology, Utrecht Institute of Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CG Utrecht, The Netherlands; (L.B.R.); (M.L.); (G.F.); (P.A.J.H.); (J.G.)
- Department of Respiratory Medicine, Amsterdam University Medical Centres (AUMC), University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Meng Li
- Division of Pharmacology, Utrecht Institute of Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CG Utrecht, The Netherlands; (L.B.R.); (M.L.); (G.F.); (P.A.J.H.); (J.G.)
| | - Gert Folkerts
- Division of Pharmacology, Utrecht Institute of Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CG Utrecht, The Netherlands; (L.B.R.); (M.L.); (G.F.); (P.A.J.H.); (J.G.)
| | - Paul A.J. Henricks
- Division of Pharmacology, Utrecht Institute of Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CG Utrecht, The Netherlands; (L.B.R.); (M.L.); (G.F.); (P.A.J.H.); (J.G.)
| | - Johan Garssen
- Division of Pharmacology, Utrecht Institute of Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CG Utrecht, The Netherlands; (L.B.R.); (M.L.); (G.F.); (P.A.J.H.); (J.G.)
- Nutricia Research, 3584 CT Utrecht, The Netherlands
| | - Betty C.A.M. van Esch
- Division of Pharmacology, Utrecht Institute of Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CG Utrecht, The Netherlands; (L.B.R.); (M.L.); (G.F.); (P.A.J.H.); (J.G.)
- Nutricia Research, 3584 CT Utrecht, The Netherlands
- Correspondence: ; Tel.: +31-62-573-2735
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Li M, Qi L, Xu JB, Zhong LY, Chan S, Chen SN, Shao XR, Zheng LY, Dong ZX, Fang TL, Mai ZY, Li J, Zheng Y, Zhang XD. Methylation of the Promoter Region of the Tight Junction Protein-1 by DNMT1 Induces EMT-like Features in Multiple Myeloma. MOLECULAR THERAPY-ONCOLYTICS 2020; 19:197-207. [PMID: 33251332 PMCID: PMC7666313 DOI: 10.1016/j.omto.2020.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/07/2020] [Indexed: 11/19/2022]
Abstract
The molecular alterations that initiate the development of multiple myeloma (MM) are not fully understood. Our results revealed that TJP1 was downregulated in MM and positively related to the overall survival of MM patients in The Cancer Genome Atlas (TCGA) database and patient samples. In parallel, cell adhesion capacity representing MM metastasis was decreased in MM patients compared with healthy samples, together with the significantly activated epithelial-to-mesenchymal transition (EMT) transcriptional-like patterns of MM cells. Further analyses demonstrated that TJP1 negatively regulated EMT and consequently positively regulated cell adhesion in MM from TCGA database and MM1s cells. Furthermore, the methylation level of each CpG site on the TJP1 promoter was negatively correlated with TJP1 expression levels. Quantitative real-time PCR and western blot assays demonstrated that methylase DNMT1 regulated the methylation of TJP1. Finally, treatment with a combination of the MM clinical medicine bortezomib, methylation inhibitor, or TJP1 overexpression significantly suppressed the viability and progression of tumor cells of MM orthotopic models. In summary, our results indicate that DNMT1 promotes the methylation of TJP1 promoter, thereby decreasing its expression and regulating the development of EMT-inhibited MM cell adhesion. Therefore, methylation of TJP1 is a potential therapeutic agent to prevent the progression of MM disease.
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Affiliation(s)
- Miao Li
- Department of Hematology, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China
- Department of Pharmacology, Molecular Cancer Research Center, School of Medicine, Sun Yat-sen University, Shenzhen 518107, China
| | - Lin Qi
- Department of Pharmacology, Molecular Cancer Research Center, School of Medicine, Sun Yat-sen University, Shenzhen 518107, China
- Corresponding author: Lin Qi, Department of Pharmacology, Molecular Cancer Research Center, School of Medicine, Sun Yat-sen University, Shenzhen 518107, China.
| | - Jing-Bo Xu
- Department of Hematology, Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China
| | - Li-Ye Zhong
- Department of Hematology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510000, China
| | - Szehoi Chan
- Department of Pharmacology, Molecular Cancer Research Center, School of Medicine, Sun Yat-sen University, Shenzhen 518107, China
| | - Shu-Na Chen
- Department of Pharmacology, Molecular Cancer Research Center, School of Medicine, Sun Yat-sen University, Shenzhen 518107, China
| | - Xin-Rong Shao
- Department of Pharmacology, Molecular Cancer Research Center, School of Medicine, Sun Yat-sen University, Shenzhen 518107, China
| | - Li-Yuan Zheng
- Department of Pharmacology, Molecular Cancer Research Center, School of Medicine, Sun Yat-sen University, Shenzhen 518107, China
| | - Zhao-Xia Dong
- Department of Pharmacology, Molecular Cancer Research Center, School of Medicine, Sun Yat-sen University, Shenzhen 518107, China
| | - Tian-Liang Fang
- Department of Pharmacology, Molecular Cancer Research Center, School of Medicine, Sun Yat-sen University, Shenzhen 518107, China
| | - Zhi-Ying Mai
- Department of Hematology, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China
- Department of Pharmacology, Molecular Cancer Research Center, School of Medicine, Sun Yat-sen University, Shenzhen 518107, China
| | - Juan Li
- Department of Hematology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510000, China
| | - Yongjiang Zheng
- Department of Hematology, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China
- Corresponding author: Yongjiang Zheng, Department of Hematology, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China.
| | - Xing-Ding Zhang
- Department of Pharmacology, Molecular Cancer Research Center, School of Medicine, Sun Yat-sen University, Shenzhen 518107, China
- Corresponding author: Xing-Ding Zhang, Department of Pharmacology, Molecular Cancer Research Center, School of Medicine, Sun Yat-sen University, Shenzhen 518107, China.
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Shi J, Fu Y, Zhao XH, Lametsch R. Glycation sites and bioactivity of lactose-glycated caseinate hydrolysate in lipopolysaccharide-injured IEC-6 cells. J Dairy Sci 2020; 104:1351-1363. [PMID: 33309364 DOI: 10.3168/jds.2020-19018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 09/25/2020] [Indexed: 01/13/2023]
Abstract
During the thermal processing of milk, Maillard reactions occur between proteins and lactose to generate glycated proteins. In this study, a lactose-glycated caseinate was hydrolyzed by trypsin. The obtained glycated caseinate (GCN) hydrolysate had a lactose content of 10.8 g/kg of protein. We identified its glycation sites and then assessed it for its protective effect against lipopolysaccharide-induced barrier injury using a rat intestinal epithelial cell line (IEC-6 cells) as a cell model and unglycated caseinate (CN) hydrolysate as a reference. Results from our liquid chromatography-mass spectrometry analysis of the GCN hydrolysate verified that lactose glycation occurred at the Lys residues in 3 casein components (αS1-casein, β-casein, and κ-casein), and this resulted in the formation of 5 peptides with the following amino acid sequences: EMPFPKYPKYPVEPF, HIQKEDVPSE, GSENSEKTTMPL, NQDKTEIPT, and EGIHAQQKEPM. The results from cell experiments showed that the 2 hydrolysates could promote cell growth and decrease lactate dehydrogenase release in the lipopolysaccharide-injured cells; more importantly, they could partially protect the damaged barrier function of the cells by increasing trans-epithelial electrical resistance, decreasing epithelial permeability, and upregulating the expression of the 3 tight junction proteins zonula occludens-1, occludin, and claudin-1. However, compared with CN hydrolysate, GCN hydrolysate showed lower efficacy in protecting against cellular barrier dysfunction. We propose that the different chemical characteristics of the CN hydrolysate and the GCN hydrolysate (i.e., amino acid loss and lactose conjugation) contributed to the lower barrier-protective efficacy of the GCN hydrolysate. During dairy processing, protein glycation of the Maillard type might have a non-negligible, unfavorable effect on dairy proteins, in view of the resulting protein glycation we found and the critical function of proteins for maintaining the integrity of the intestinal barrier.
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Affiliation(s)
- J Shi
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, 150030 Harbin, China
| | - Y Fu
- College of Food Science, Southwest University, 400715 Chongqing, China
| | - X H Zhao
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, 150030 Harbin, China; School of Biology and Food Engineering, Guangdong University of Petrochemical Technology, 525000 Maoming, PR China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong University of Petrochemical Technology, 525000 Maoming, PR China.
| | - R Lametsch
- Department of Food Science, University of Copenhagen, 1958 Frederiksberg C, Denmark.
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Jiang S, Fan Q, Xu M, Cheng F, Li Z, Ding G, Geng L, Fu T. Hydrogen-rich saline protects intestinal epithelial tight junction barrier in rats with intestinal ischemia-reperfusion injury by inhibiting endoplasmic reticulum stress-induced apoptosis pathway. J Pediatr Surg 2020; 55:2811-2819. [PMID: 32169342 DOI: 10.1016/j.jpedsurg.2020.01.061] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 01/30/2020] [Indexed: 02/07/2023]
Abstract
AIM To investigate the effects of hydrogen-rich saline (HRS) on intestinal epithelial tight junction (TJ) barrier in rats with intestinal ischemia-reperfusion injury (IIRI). MATERIALS AND METHODS Thirty-two healthy male Sprague-Dawley (SD) rats were randomly divided into four groups (n = 8 each): Sham group, I/R group, HRS group and 4-PBA group. After 45 min of ischemia and 6 h of reperfusion, the rats were sacrificed to collect serum and ileum for detection. Hematoxylin and eosin (H&E) staining was used to observe the morphology of small intestine. The serum expression levels of intestinal fatty acid binding protein (IFABP), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) were determined by enzyme linked immunosorbent assay (ELISA). Imunohistochemistry, immunofluorescence and Western blot were used to detect key proteins in intestinal epithelial TJs, ERS, and ERS-induced apoptosis, including occludin, zonula occludens-1 (ZO-1), glucose-regulated protein 78 (GRP78), X-box binding protein-1 (XBP1), C/EBP-homologous protein (CHOP) and caspase-3. Data was presented as mean ± SEM and compared using one-way ANOVA. A p-value <0.05 was considered significant. RESULTS Compared with rats in the I/R group, the Chiu score of ileum damage in the HRS group and 4-PBA group were lower. The levels of serum IFABP, TNF-α, and IL-1β were statistically significant among the groups. Increased expression of TJ proteins occludin and ZO-1 by reducing various parameters of ERS and ERS-induced apoptosis evidenced by down-regulation of the protein levels of GRP78, XBP1, CHOP and caspase-3 were shown in the HRS and 4-PBA groups. CONCLUSION HRS had potential protective effects on intestinal barrier in IIRI rats. This study suggested that inhibition of excessive ERS and ERS-induced apoptosis by HRS may reduce intestinal epithelial cells damage and maintain the integrity of intestinal epithelial TJ barrier in rats with IIRI.
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Affiliation(s)
- Shuai Jiang
- Department of Pediatric Surgery, Binzhou Medical University Hospital, Binzhou 256600, Shandong, China
| | - Qizhong Fan
- Department of Pharmacy, Binzhou Medical University Hospital, Binzhou 256600, Shandong, China
| | - Ming Xu
- Laboratory Animal Center, Binzhou Medical University, Yantai 264000, Shandong, China
| | - Fengchun Cheng
- Department of Pediatric Surgery, Binzhou Medical University Hospital, Binzhou 256600, Shandong, China
| | - Zhihui Li
- Department of Pediatric Surgery, Qingdao Women and Children's Hospital, Qingdao 266011, Shandong, China
| | - Guojian Ding
- Department of Pediatric Surgery, Binzhou Medical University Hospital, Binzhou 256600, Shandong, China
| | - Lei Geng
- Department of Pediatric Surgery, Binzhou Medical University Hospital, Binzhou 256600, Shandong, China.
| | - Tingliang Fu
- Department of Pediatric Surgery, Binzhou Medical University Hospital, Binzhou 256600, Shandong, China
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Absorption-Enhancing Mechanisms of Capryol 90, a Novel Absorption Enhancer, for Improving the Intestinal Absorption of Poorly Absorbed Drugs: Contributions to Trans- or Para-Cellular Pathways. Pharm Res 2020; 37:248. [PMID: 33230672 DOI: 10.1007/s11095-020-02963-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 10/26/2020] [Indexed: 10/22/2022]
Abstract
PURPOSE We have previously reported that Capryol 90 improves the intestinal absorption of insulin, a peptide drug, without causing serious damage to the intestinal epithelium. However, the effects of Capryol 90 and its related formulations on the intestinal absorption of other drugs, and their absorption-enhancing mechanisms are still unclear. The aim of this study is to evaluate the effects of Capryol 90 and its related formulations on the intestinal absorption of drugs and elucidate their absorption-enhancing mechanisms. METHODS The intestinal absorption of 5(6)-carboxyfluorescein, fluorescein isothiocyanate-dextrans, and alendronate was evaluated using an in situ closed loop method. Brush border membrane vesicles (BBMVs) were labeled with fluorescent probes, and the fluidity of membrane was evaluated by a fluorescence depolarization method. The expression levels of tight junction (TJ) proteins were measured using a Western blot method and immunofluorescence staining. RESULTS Among the tested excipients, Capryol 90 significantly improved the small and large intestinal absorption of drugs. In mechanistic studies, Capryol 90 increased the membrane fluidity of lipid bilayers in BBMVs. Additionally, Capryol 90 decreased the expression levels of TJ-associated proteins, namely claudin-4, occludin, and ZO-1. CONCLUSIONS Capryol 90 is an effective absorption enhancer for improving the intestinal absorption of poorly absorbed drugs via both transcellular and paracellular pathways.
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Ma T, Peng W, Liu Z, Gao T, Liu W, Zhou D, Yang K, Guo R, Duan Z, Liang W, Bei W, Yuan F, Tian Y. Tea polyphenols inhibit the growth and virulence of ETEC K88. Microb Pathog 2020; 152:104640. [PMID: 33232763 DOI: 10.1016/j.micpath.2020.104640] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 11/16/2020] [Accepted: 11/16/2020] [Indexed: 01/20/2023]
Abstract
Diarrhea caused by Enterotoxigenic Escherichia coli (ETEC) causes high levels of morbidity and mortality in neonatal piglets. Owing to the abuse of antibiotics and emergence of drug resistance, antibiotics are no longer considered only beneficial, but also potentially harmful drugs. Supplements that can inhibit the growth of bacteria are expected to replace antibiotics. Tea polyphenols have numerous important biological functions, including antibacterial, antiviral, antioxidative, anti-inflammatory, and antihypertensive effects. We investigated the role of tea polyphenols in ETEC K88 infection using a mouse model. Pretreating with tea polyphenols attenuated the symptoms induced by ETEC K88. Furthermore, in a cell adherence assay, tea polyphenols inhibited ETEC K88 adherence to IPEC-J2 cells. When cells were infected with ETEC K88, mRNA and protein levels of claudin-1 were significantly decreased compared with those of control cells. However, when cells were pretreated with tea polyphenols, claudin-1 mRNA and protein levels were higher than those in cells without pretreatment upon cell infection with ETEC K88. TLR2 mRNA levels were also higher following cell infection with ETEC K88 when cells were pretreated with tea polyphenols. These data revealed that tea polyphenols could increase the barrier integrity of IPEC-J2 cells by upregulating expression of claudin-1 through activation of TLR2. Tea polyphenols had beneficial effects on epithelial barrier function. Therefore, tea polyphenols could be used as a novel strategy to control and treat pig infections caused by ETEC K88.
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Affiliation(s)
- Tianfeng Ma
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Cooperative Innovation Center of Sustainable Pig Production, Wuhan, 430070, China
| | - Wei Peng
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Cooperative Innovation Center of Sustainable Pig Production, Wuhan, 430070, China
| | - Zewen Liu
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China; Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China
| | - Ting Gao
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China; Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China
| | - Wei Liu
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China; Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China
| | - Danna Zhou
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China; Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China
| | - Keli Yang
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China; Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China
| | - Rui Guo
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China; Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China
| | - Zhengying Duan
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China; Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China
| | - Wan Liang
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China; Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China
| | - Weicheng Bei
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Cooperative Innovation Center of Sustainable Pig Production, Wuhan, 430070, China.
| | - Fangyan Yuan
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China; Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China.
| | - Yongxiang Tian
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China; Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China.
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Yao Y, Feng Q, Shen J. Myosin light chain kinase regulates intestinal permeability of mucosal homeostasis in Crohn's disease. Expert Rev Clin Immunol 2020; 16:1127-1141. [PMID: 33183108 DOI: 10.1080/1744666x.2021.1850269] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Introduction: Researchers have investigated the potential role of intestinal permeability in Crohn's disease pathogenesis. Intestinal permeability is usually mediated by cytoskeleton and intercellular junctions. The myosin light chain kinase (MLCK) is an enzyme that activates the myosin light chain to exert its function related to cytoskeleton contraction and tight junction regulation. The correlation between MLCK and Crohn's disease pathogenesis has been consistently proven. Areas covered: This study aims to expand the understanding of the regulation and function of MLCK in Crohn's disease. An extensive literature search in the MEDLINE database (via PubMed) has been performed up to Oct. 2020. The roles of MLCK in tight junction activation, intestinal permeability enhancement, and cell signal regulation are comprehensively discussed. Expert opinion: Targeting the MLCK-related pathways such as TNF-α in CD treatment has been put into clinical use. More accurate targeting such as MLCK and TNFR2 has been proposed to reduce side effects. MLCK may also have the potential to become biomarkers in fields like CD activity. With the application of cutting age research methods and tools, the MLCK research could be accelerated.
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Affiliation(s)
- Yiran Yao
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Inflammatory Bowel Disease Research Center; Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University , Shanghai, China
| | - Qi Feng
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai, China
| | - Jun Shen
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Inflammatory Bowel Disease Research Center; Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University , Shanghai, China
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Zhan K, Zheng H, Li J, Wu H, Qin S, Luo L, Huang S. Gut Microbiota-Bile Acid Crosstalk in Diarrhea-Irritable Bowel Syndrome. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3828249. [PMID: 33274207 PMCID: PMC7676935 DOI: 10.1155/2020/3828249] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 10/14/2020] [Indexed: 02/06/2023]
Abstract
The occurrence of diarrhea-predominant irritable bowel syndrome (IBS-D) is the result of multiple factors, and its pathogenesis has not yet been clarified. Emerging evidence indicates abnormal changes in gut microbiota and bile acid (BA) metabolism have a close relationship with IBS-D. Gut microbiota is involved in the secondary BA production via deconjugation, 7α-dehydroxylation, oxidation, epimerization, desulfation, and esterification reactions respectively. Changes in the composition and quantity of gut microbiota have an important impact on the metabolism of BAs, which can lead to the occurrence of gastrointestinal diseases. BAs, synthesized in the hepatocytes, play an important role in maintaining the homeostasis of gut microbiota and the balance of glucose and lipid metabolism. In consideration of the complex biological functional connections among gut microbiota, BAs, and IBS-D, it is urgent to review the latest research progress in this field. In this review, we summarized the alterations of gut microbiota in IBS-D and discussed the mechanistic connections between gut microbiota and BA metabolism in IBS-D, which may be involved in activating two important bile acid receptors, G-protein coupled bile acid receptor 1 (TGR5) and farnesoid X receptor (FXR). We also highlight the strategies of prevention and treatment of IBS-D via regulating gut microbiota-bile acid axis, including probiotics, fecal microbiota transplantation (FMT), cholestyramine, and the cutting-edge technology about bacteria genetic engineering.
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Affiliation(s)
- Kai Zhan
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Huan Zheng
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Jianqing Li
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Haomeng Wu
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Shumin Qin
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Lei Luo
- Department of Gastroenterology, The Second People's Hospital of China Three Gorges University, Yichang 443000, China
| | - Shaogang Huang
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou 510000, China
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García-Salvador A, Domínguez-Monedero A, Gómez-Fernández P, García-Bilbao A, Carregal-Romero S, Castilla J, Goñi-de-Cerio F. Evaluation of the Influence of Astrocytes on In Vitro Blood-Brain Barrier Models. Altern Lab Anim 2020; 48:184-200. [PMID: 33136430 DOI: 10.1177/0261192920966954] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In vitro blood-brain barrier (BBB) models are a useful tool to screen the permeability and toxicity of new drugs. Currently, many different in vitro BBB models coexist, but none stands out as being notably better than the rest. Therefore, there is still a need to evaluate the quality of BBB models under various conditions and assess their ability to mimic the in vivo situation. In this study, two brain endothelial cell lines (bEnd.3 and hCMEC/D3) and two epithelial-like cell lines (MDCKII and Caco-2) were selected for BBB modelling purposes. They were grown as monolayers of a single cell type, under the following conditions: in coculture with either primary or immortalised astrocytes; or in the presence of primary or immortalised astrocyte-derived conditioned media. A total of 20 different BBB models were established in this manner, in order to assess the effects of the astroglial components on the BBB phenotype in each case. To this end, six parameters were studied: the expression of selected tight junction proteins; the enzyme activities of alkaline phosphatase and of gamma glutamyl transpeptidase; the transendothelial/transepithelial electrical resistance (TEER); restriction in paracellular transport; and efflux transporter inhibition were each evaluated and correlated. The results showed that coculturing with either primary or immortalised astrocytes led to a general improvement in all parameters studied, evidencing the contribution of this cell type to effective BBB formation. Furthermore, the permeability coefficient (P e) of the tracer molecule, Lucifer Yellow, correlated with three of the six parameters studied. In addition, this study highlights the potential for the use of the Lucifer Yellow P e value as an indicator of barrier integrity in in vitro BBB models, which could be useful for screening the permeability of new drugs.
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Affiliation(s)
- Adrián García-Salvador
- 73049GAIKER Technology Centre, Basque Research and Technology Alliance (BRTA), Zamudio, Bizkaia, Spain
| | - Alazne Domínguez-Monedero
- 73049GAIKER Technology Centre, Basque Research and Technology Alliance (BRTA), Zamudio, Bizkaia, Spain
| | - Paloma Gómez-Fernández
- 73049GAIKER Technology Centre, Basque Research and Technology Alliance (BRTA), Zamudio, Bizkaia, Spain
| | - Amaia García-Bilbao
- 73049GAIKER Technology Centre, Basque Research and Technology Alliance (BRTA), Zamudio, Bizkaia, Spain
| | - Susana Carregal-Romero
- Molecular and Functional Biomarkers Group, 90216CIC biomaGUNE (BRTA), Donostia-San Sebastián, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Joaquín Castilla
- 73038CIC bioGUNE (BRTA), Derio, Spain
- IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
| | - Felipe Goñi-de-Cerio
- 73049GAIKER Technology Centre, Basque Research and Technology Alliance (BRTA), Zamudio, Bizkaia, Spain
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Russell C, Hussain M, Huen D, Rahman AS, Mohammed AR. Profiling gene expression dynamics underpinning conventional testing approaches to better inform pre-clinical evaluation of an age appropriate spironolactone formulation. Pharm Dev Technol 2020; 26:101-109. [PMID: 33078682 DOI: 10.1080/10837450.2020.1839496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
There is a need to accelerate paediatric formulation evaluation and enhance quality of early stage data in drug development to alleviate the information pinch point present between formulation development and clinical evaluation. This present work reports application of DNA microarrays as a high throughput screening tool identifying markers for prediction of bioavailability and formulation driven physiological responses. With a focus on enhancing paediatric medicine provision, an oral liquid spironolactone suspension was formulated addressing a paediatric target product profile. Caco-2 cells cultured on transwell inserts were implemented in transport assays in vitro and DNA microarrays were used to examine gene expression modulation. Wistar rats were used to derive in vivo bioavailability data. In vitro, genomic, and in vivo data sets were concurrently evaluated linking drug transport and the genomic fingerprint generated by spironolactone formulation exposure. Significant changes in gene expression are reported as a result of formulation exposure. These include genes coding for ATP-binding cassette (ABC) transporters, solute carrier (SLC) transporters, cytochrome P450 (CYP) enzymes, and carboxylesterase enzymes. Genomic findings better inform pre-clinical understanding of pharmacokinetic and pharmacodynamic responses to spironolactone and its active metabolites than current in vitro drug transport assays alone.
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Affiliation(s)
- Craig Russell
- Aston Pharmacy School, Aston University, Birmingham, UK
| | | | - David Huen
- School of Biology, Chemistry and Forensic Science, University of Wolverhampton, Wolverhampton, UK
| | - Ayesha S Rahman
- School of Pharmacy, University of Wolverhampton, Wolverhampton, UK
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Rudraraju M, Narayanan SP, Somanath PR. Regulation of blood-retinal barrier cell-junctions in diabetic retinopathy. Pharmacol Res 2020; 161:105115. [PMID: 32750417 PMCID: PMC7755666 DOI: 10.1016/j.phrs.2020.105115] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 07/22/2020] [Accepted: 07/27/2020] [Indexed: 12/15/2022]
Abstract
Loss of the blood-retinal barrier (BRB) integrity and subsequent damage to the neurovascular unit in the retina are the underlying reasons for diabetic retinopathy (DR). Damage to BRB eventually leads to severe visual impairment in the absence of prompt intervention. Diabetic macular edema and proliferative DR are the advanced stages of the disease where BRB integrity is altered. Primary mechanisms contributing to BRB dysfunction include loss of cell-cell barrier junctions, vascular endothelial growth factor, advanced glycation end products-induced damage, and oxidative stress. Although much is known about the involvement of adherens and tight-junction proteins in the regulation of vascular permeability in various diseases, there is a significant gap in our knowledge on the junctional proteins expressed in the BRB and how BRB function is modulated in the diabetic retina. In this review article, we present our current understanding of the molecular composition of BRB, the changes in the BRB junctional protein turnover in DR, and how BRB functional modulation affects vascular permeability and macular edema in the diabetic retina.
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Affiliation(s)
- Madhuri Rudraraju
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA 30912, United States; James and Jean Culver Vision Discovery Institute, Augusta University, Augusta, GA 30912, United States
| | - S Priya Narayanan
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA 30912, United States; Vascular Biology Center, Augusta University, Augusta, GA 30912, United States; James and Jean Culver Vision Discovery Institute, Augusta University, Augusta, GA 30912, United States
| | - Payaningal R Somanath
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA 30912, United States; Vascular Biology Center, Augusta University, Augusta, GA 30912, United States; Department of Medicine, Augusta University, Augusta, GA 30912, United States.
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141
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Ramirez-Valles EG, Rodríguez-Pulido A, Barraza-Salas M, Martínez-Velis I, Meneses-Morales I, Ayala-García VM, Alba-Fierro CA. A Quest for New Cancer Diagnosis, Prognosis and Prediction Biomarkers and Their Use in Biosensors Development. Technol Cancer Res Treat 2020; 19:1533033820957033. [PMID: 33107395 PMCID: PMC7607814 DOI: 10.1177/1533033820957033] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Traditional techniques for cancer diagnosis, such as nuclear magnetic resonance, ultrasound and tissue analysis, require sophisticated devices and highly trained personnel, which are characterized by elevated operation costs. The use of biomarkers has emerged as an alternative for cancer diagnosis, prognosis and prediction because their measurement in tissues or fluids, such as blood, urine or saliva, is characterized by shorter processing times. However, the biomarkers used currently, and the techniques used for their measurement, including ELISA, western-blot, polymerase chain reaction (PCR) or immunohistochemistry, possess low sensitivity and specificity. Therefore, the search for new proteomic, genomic or immunological biomarkers and the development of new noninvasive, easier and cheaper techniques that meet the sensitivity and specificity criteria for the diagnosis, prognosis and prediction of this disease has become a relevant topic. The purpose of this review is to provide an overview about the search for new cancer biomarkers, including the strategies that must be followed to identify them, as well as presenting the latest advances in the development of biosensors that possess a high potential for cancer diagnosis, prognosis and prediction, mainly focusing on their relevance in lung, prostate and breast cancers.
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Affiliation(s)
- Eda G Ramirez-Valles
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Dgo, Mexico
| | | | - Marcelo Barraza-Salas
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Dgo, Mexico
| | - Isaac Martínez-Velis
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Dgo, Mexico
| | - Iván Meneses-Morales
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Dgo, Mexico
| | - Víctor M Ayala-García
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Dgo, Mexico
| | - Carlos A Alba-Fierro
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Dgo, Mexico
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142
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Kim K, Bae GD, Park EY, Baek DJ, Kim CY, Jang SE, Oh YS. Allomyrina dichotoma larval extract attenuates intestinal barrier disruption by altering inflammatory response and tight junction proteins in lipopolysaccharide-induced Caco-2 cells. Biochem Biophys Res Commun 2020; 532:145-150. [PMID: 32828534 DOI: 10.1016/j.bbrc.2020.08.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/16/2022]
Abstract
Intestinal epithelial cells form a barrier between the intestinal lumen and host connective tissues and play an important role in maintaining intestinal nutrient homeostasis. This study investigated effects of Allomyrina dichotoma (rhinoceros beetle) larval extract (ADLE) on the intestinal barrier damage and explored mechanisms for reversing intestinal barrier dysfunction in lipopolysaccharide (LPS)-stimulated Caco-2, human intestinal epithelial cells. LPS reduced intestinal epithelial barrier function by increasing transepithelial electrical resistance, and this effect was significantly attenuated by ADLE treatment. ADLE also significantly countered the inhibition of tight junction-related protein expression in both LPS-induced Caco-2 cells and intestine from HFD-induced mice. Moreover, ADLE significantly decreased expression and production of inflammatory factors, such as iNOS, cox-2, nitric oxide, and cytokines induced by LPS stimulus. Reduction in phosphorylation of adenosine monophosphate-activated protein kinase was averted by ADLE treatment in LPS treated INS-1 cells. Finally, reactive oxygen stress level was decreased and ATP production was increased by ADLE treatment. ADLE appears to display gut health-promoting effects by reducing inflammation and inducing tight junction proteins in Caco-2 cells. Therefore, ADLE might be useful for preventing or treating intestine cell damage in inflammatory bowel disease.
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Affiliation(s)
- Kyong Kim
- Department of Food Nutrition, Eulji University, Seongnam, South Korea
| | - Gong-Deuk Bae
- Institute of Lee Gil Ya Cancer and Diabetes, Dept. of Molecular Medicine, Gachon University, Incheon, South Korea
| | - Eun-Young Park
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Jeonnam, South Korea
| | - Dong Jae Baek
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Jeonnam, South Korea
| | - Chul Young Kim
- College of Pharmacy, Hanyang University, Ansan, South Korea
| | - Se-Eun Jang
- Department of Food Nutrition, Eulji University, Seongnam, South Korea
| | - Yoon Sin Oh
- Department of Food Nutrition, Eulji University, Seongnam, South Korea.
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143
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Characterization and molecular evolution of claudin genes in the Pungitius sinensis. J Comp Physiol B 2020; 190:749-759. [PMID: 32778926 DOI: 10.1007/s00360-020-01301-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 07/20/2020] [Accepted: 08/04/2020] [Indexed: 10/23/2022]
Abstract
Claudins are a family of integrated membrane-bound proteins involving in paracellular tightness, barrier forming, ion permeability, and substrate selection at tight junctions of chordate epithelial and endothelial cells. Here, 39 putative claudin genes were identified in the Pungitius sinensis based on the high throughput RNA-seq. Conservative motif distribution in each group suggested functional relevance. Divergence of duplicated genes implied the species' adaptation to the environment. In addition, selective pressure analyses identified one site, which may accelerate functional divergence in this protein family. Pesticides cause environmental pollution and have a serious impact on aquatic organisms when entering the water. The expression pattern of most claudin genes was affected by organophosphorus pesticide, indicating that they may be involved in the immune regulation of organisms and the detoxification of xenobiotics. Protein-protein network analyses also exhibited 439 interactions, which implied the functional diversity. It will provide some references for the functional study on claudin genes.
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144
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Reduced Mrp2 surface availability as PI3Kγ-mediated hepatocytic dysfunction reflecting a hallmark of cholestasis in sepsis. Sci Rep 2020; 10:13110. [PMID: 32753644 PMCID: PMC7403153 DOI: 10.1038/s41598-020-69901-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 06/30/2020] [Indexed: 12/14/2022] Open
Abstract
Sepsis-associated liver dysfunction manifesting as cholestasis is common during multiple organ failure. Three hepatocytic dysfunctions are considered as major hallmarks of cholestasis in sepsis: impairments of microvilli covering canalicular membranes, disruptions of tight junctions sealing bile-collecting canaliculae and disruptions of Mrp2-mediated hepatobiliary transport. PI3Kγ loss-of-function was suggested as beneficial in early sepsis. Yet, the PI3Kγ-regulated cellular processes in hepatocytes remained largely unclear. We analysed all three sepsis hallmarks for responsiveness to massive PI3K/Akt signalling and PI3Kγ loss-of-function, respectively. Surprisingly, neither microvilli nor tight junctions were strongly modulated, as shown by electron microscopical studies of mouse liver samples. Instead, quantitative electron microscopy proved that solely Mrp2 surface availability, i.e. the third hallmark, responded strongly to PI3K/Akt signalling. Mrp2 plasma membrane levels were massively reduced upon PI3K/Akt signalling. Importantly, Mrp2 levels at the plasma membrane of PI3Kγ KO hepatocytes remained unaffected upon PI3K/Akt signalling stimulation. The effect explicitly relied on PI3Kγ's enzymatic ability, as shown by PI3Kγ kinase-dead mice. Keeping the surface availability of the biliary transporter Mrp2 therefore is a cell biological process that may underlie the observation that PI3Kγ loss-of-function protects from hepatic excretory dysfunction during early sepsis and Mrp2 should thus take center stage in pharmacological interventions.
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145
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Zhao Y, Zhang TR, Li Q, Feng L, Liu Y, Jiang WD, Wu P, Zhao J, Zhou XQ, Jiang J. Effect of dietary L-glutamate levels on growth, digestive and absorptive capability, and intestinal physical barrier function in Jian carp ( Cyprinus carpio var. Jian). ACTA ACUST UNITED AC 2020; 6:198-209. [PMID: 32542201 PMCID: PMC7283372 DOI: 10.1016/j.aninu.2020.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 02/06/2020] [Accepted: 02/13/2020] [Indexed: 02/07/2023]
Abstract
The present study explored effects of L-glutamate (Glu) levels on growth, digestive and absorptive capability, and intestinal physical barrier functions of Jian carp (Cyprinus carpio). A total of 600 Jian carp (126.40 ± 0.21 g) were randomly distributed into 5 groups with 3 replicates each, fed diets containing graded levels of Glu (53.4 [control], 57.2, 60.6, 68.4, and 83.4 g/kg) for 63 d. Results showed compared with control diet, feed intake and percent weight gain (PWG) in fish fed 83.4 g of Glu/kg diet were increased and feed conversion ratio in fish fed 68.4 g of Glu/kg diet was decreased (P < 0.05). Similarly, body crude protein and lipid contents in fish fed 68.4 g of Glu/kg diet were higher (P < 0.05). The activities of trypsin and chymotrypsin in the hepatopancreas and intestine, and amylase, alkaline phosphatase (AKP), Na+, K+-ATPase (NKA), and creatine kinase (CK) in intestine were higher in fish fed 68.4 g of Glu/kg diet (P < 0.05). Dietary Glu (57.2 to 83.4 g/kg diet) decreased malondialdehyde (MDA) and protein carbonyl (PCO) contents in the intestine (P < 0.05). The activities of catalase (CAT), glutathione peroxidase (GPx), and glutathione S-transferase (GST) in the hepatopancreas and intestine were higher in fish fed 60.6 and 68.4 g of Glu/kg diets (P < 0.05). Intestinal the glutathione reductase (GR) activity and glutathione (GSH) content in fish fed 60.6, 68.4, and 83.4 g of Glu/kg diet were increased (P < 0.05). The GPx1a, GST, and nuclear factor erythroid 2-related factor 2 (Nrf2) mRNA expressions in the intestine were up-regulated in fish fed 60.6 and 68.4 g of Glu/kg diet (P < 0.05). The zonula occludens protein-1 (ZO-1), occludin1, and claudin3 mRNA expressions were also up-regulated in fish fed 83.4 g of Glu/kg diet (P < 0.05). Fish fed 68.4 g of Glu/kg diet had higher levels of claudin 2, claudin7, and protein kinase C (PKC) mRNA (P < 0.05). These results indicated that Glu improved fish growth, digestive and absorptive ability, and intestinal physical barrier functions. Based on the quadratic regression analysis of PWG, and MDA of the hepatopancreas and intestine, the optimal dietary Glu levels were estimated to be 81.97, 71.06, and 71.36 g/kg diet, respectively.
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Affiliation(s)
- Ye Zhao
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.,Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Tian-Ran Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.,Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, 625014, China
| | - Qian Li
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.,Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, 625014, China
| | - Lin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China.,Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, 625014, China
| | - Yang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China.,Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, 625014, China
| | - Wei-Dan Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China.,Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, 625014, China
| | - Pei Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China.,Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, 625014, China
| | - Juan Zhao
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China.,Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, 625014, China
| | - Xiao-Qiu Zhou
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China.,Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, 625014, China
| | - Jun Jiang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.,Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China.,Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, 625014, China
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146
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Liu W, Ruan T, Ji X, Ran D, Sun J, Shi H, Prinz RA, Sun J, Pan Z, Jiao X, Xu X. The Gli1-Snail axis contributes to Salmonella Typhimurium-induced disruption of intercellular junctions of intestinal epithelial cells. Cell Microbiol 2020; 22:e13211. [PMID: 32329192 DOI: 10.1111/cmi.13211] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 12/11/2022]
Abstract
Salmonella enterica serovar Typhimurium (S. Typhimurium) is a facultative intracellular pathogen that damages gastrointestinal tissue and causes severe diarrhoea. The mechanisms by which Salmonella disrupts epithelial barrier and increases the paracellular permeability are incompletely understood. Our present study aims to determine the role of Gli1, a transcription factor activated in the sonic hedgehog (Shh) pathway, in decreasing the levels of apical junction proteins in a Salmonella-infected human colonic epithelial cancer cell line, Caco-2, and in the intestinal tissue of Salmonella-infected mice. Here, we report that S. Typhimurium increased the mRNA and protein levels of Gli1 and Snail, a downstream transcription factor that plays an important role in the epithelial-to-mesenchymal transition (EMT). S. Typhimurium also decreased the levels of E-cadherin and three tight junction proteins (ZO-1, claudin-1, and occludin). Gli1 siRNA and GANT61, a Gli1-specific inhibitor, blocked S. Typhimurium-induced Snail expression, restored the levels of E-cadherin and tight junction proteins, and prevented S. Typhimurium-increased paracellular permeability. Further study showed that Gli1 was cross-activated by the MAP and PI-3 kinase pathways. S. Typhimurium devoid of sopB, an effector of the Type 3 secretion system (T3SS) responsible for AKT activation, was unable to induce Snail expression and to decrease the expression of apical junction proteins. Our study uncovered a novel role of Gli1 in mediating the Salmonella-induced disruption of the intestinal epithelial barrier.
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Affiliation(s)
- Wei Liu
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Tao Ruan
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Xiaoyue Ji
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Di Ran
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Jing Sun
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Huoying Shi
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Richard A Prinz
- Department of Surgery, NorthShore University Health System, Evanston, Illinois, USA
| | - Jun Sun
- Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Zhiming Pan
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China
| | - Xinan Jiao
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China
| | - Xiulong Xu
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China.,Department of Cell and Molecular Medicine, Rush University Medical Center, Chicago, Illinois, USA
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147
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Stanicek L, Lozano-Vidal N, Bink DI, Hooglugt A, Yao W, Wittig I, van Rijssel J, van Buul JD, van Bergen A, Klems A, Ramms AS, Le Noble F, Hofmann P, Szulcek R, Wang S, Offermanns S, Ercanoglu MS, Kwon HB, Stainier D, Huveneers S, Kurian L, Dimmeler S, Boon RA. Long non-coding RNA LASSIE regulates shear stress sensing and endothelial barrier function. Commun Biol 2020; 3:265. [PMID: 32457386 PMCID: PMC7251106 DOI: 10.1038/s42003-020-0987-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 05/04/2020] [Indexed: 12/14/2022] Open
Abstract
Blood vessels are constantly exposed to shear stress, a biomechanical force generated by blood flow. Normal shear stress sensing and barrier function are crucial for vascular homeostasis and are controlled by adherens junctions (AJs). Here we show that AJs are stabilized by the shear stress-induced long non-coding RNA LASSIE (linc00520). Silencing of LASSIE in endothelial cells impairs cell survival, cell-cell contacts and cell alignment in the direction of flow. LASSIE associates with junction proteins (e.g. PECAM-1) and the intermediate filament protein nestin, as identified by RNA affinity purification. The AJs component VE-cadherin showed decreased stabilization, due to reduced interaction with nestin and the microtubule cytoskeleton in the absence of LASSIE. This study identifies LASSIE as link between nestin and VE-cadherin, and describes nestin as crucial component in the endothelial response to shear stress. Furthermore, this study indicates that LASSIE regulates barrier function by connecting AJs to the cytoskeleton. Stanicek et al identify a shear stress-induced long non-coding RNA they name LASSIE, which stabilises junctions between endothelial cells through interactions with junctional and cytoskeletal proteins. This study provides insights into how a transcript that does not encode a protein controls endothelial response to forces associated with blood flow and endothelial barrier function.
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Affiliation(s)
- Laura Stanicek
- Dept. of Physiology, Amsterdam Cardiovascular Sciences (ACS), Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands.,Institute of Cardiovascular Regeneration, Center of Molecular Medicine, Goethe-University, Frankfurt, Germany
| | - Noelia Lozano-Vidal
- Dept. of Physiology, Amsterdam Cardiovascular Sciences (ACS), Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands
| | - Diewertje Ilse Bink
- Dept. of Physiology, Amsterdam Cardiovascular Sciences (ACS), Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands
| | - Aukie Hooglugt
- Dept. of Physiology, Amsterdam Cardiovascular Sciences (ACS), Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands.,Department of Medical Biochemistry, Vascular Microenvironment and Integrity, Amsterdam Cardiovascular Sciences (ACS), Amsterdam University Medical Center, 1105 AZ, Amsterdam, The Netherlands
| | - Wenjie Yao
- Institute for Neurophysiology, Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Ilka Wittig
- Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine, Goethe-University, Frankfurt, Germany
| | - Jos van Rijssel
- Molecular Cell Biology Laboratory, Department of Plasma Proteins, Sanquin Research and Landsteiner Laboratory, Academic Medical Center Amsterdam, University of Amsterdam, 1066 CX, Amsterdam, The Netherlands
| | - Jaap Diederik van Buul
- Molecular Cell Biology Laboratory, Department of Plasma Proteins, Sanquin Research and Landsteiner Laboratory, Academic Medical Center Amsterdam, University of Amsterdam, 1066 CX, Amsterdam, The Netherlands
| | - Anke van Bergen
- Dept. of Physiology, Amsterdam Cardiovascular Sciences (ACS), Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands
| | - Alina Klems
- Department of Cell and Developmental Biology, Institute of Zoology (ZOO), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Anne Sophie Ramms
- Department of Cell and Developmental Biology, Institute of Zoology (ZOO), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Ferdinand Le Noble
- Department of Cell and Developmental Biology, Institute of Zoology (ZOO), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Patrick Hofmann
- Institute of Cardiovascular Regeneration, Center of Molecular Medicine, Goethe-University, Frankfurt, Germany.,German Center for Cardiovascular Research DZHK, Partner Site Frankfurt Rhine-Main, Berlin, Germany
| | - Robert Szulcek
- Dept. of Pulmonary Diseases, Amsterdam Cardiovascular Sciences (ACS), Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands
| | - ShengPeng Wang
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Stefan Offermanns
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Meryem Seda Ercanoglu
- Institute of Virology, University Hospital Cologne, 50935, Cologne, Germany.,Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931, Cologne, Germany
| | - Hyouk-Bum Kwon
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Didier Stainier
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Stephan Huveneers
- Department of Medical Biochemistry, Vascular Microenvironment and Integrity, Amsterdam Cardiovascular Sciences (ACS), Amsterdam University Medical Center, 1105 AZ, Amsterdam, The Netherlands
| | - Leo Kurian
- Institute for Neurophysiology, Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Stefanie Dimmeler
- Institute of Cardiovascular Regeneration, Center of Molecular Medicine, Goethe-University, Frankfurt, Germany.,German Center for Cardiovascular Research DZHK, Partner Site Frankfurt Rhine-Main, Berlin, Germany
| | - Reinier Abraham Boon
- Dept. of Physiology, Amsterdam Cardiovascular Sciences (ACS), Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands. .,Institute of Cardiovascular Regeneration, Center of Molecular Medicine, Goethe-University, Frankfurt, Germany. .,German Center for Cardiovascular Research DZHK, Partner Site Frankfurt Rhine-Main, Berlin, Germany.
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148
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Jin Y, Blikslager AT. The Regulation of Intestinal Mucosal Barrier by Myosin Light Chain Kinase/Rho Kinases. Int J Mol Sci 2020; 21:ijms21103550. [PMID: 32443411 PMCID: PMC7278945 DOI: 10.3390/ijms21103550] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/15/2020] [Accepted: 05/16/2020] [Indexed: 12/19/2022] Open
Abstract
The intestinal epithelial apical junctional complex, which includes tight and adherens junctions, contributes to the intestinal barrier function via their role in regulating paracellular permeability. Myosin light chain II (MLC-2), has been shown to be a critical regulatory protein in altering paracellular permeability during gastrointestinal disorders. Previous studies have demonstrated that phosphorylation of MLC-2 is a biochemical marker for perijunctional actomyosin ring contraction, which increases paracellular permeability by regulating the apical junctional complex. The phosphorylation of MLC-2 is dominantly regulated by myosin light chain kinase- (MLCK-) and Rho-associated coiled-coil containing protein kinase- (ROCK-) mediated pathways. In this review, we aim to summarize the current state of knowledge regarding the role of MLCK- and ROCK-mediated pathways in the regulation of the intestinal barrier during normal homeostasis and digestive diseases. Additionally, we will also suggest potential therapeutic targeting of MLCK- and ROCK-associated pathways in gastrointestinal disorders that compromise the intestinal barrier.
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Affiliation(s)
- Younggeon Jin
- Department of Animal and Avian Sciences, College of Agriculture and Natural Resources, University of Maryland, College Park, MD 20742, USA;
| | - Anthony T. Blikslager
- Department of Clinical Sciences, Comparative Medicine Institute, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA
- Correspondence:
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149
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Dominiak A, Chełstowska B, Olejarz W, Nowicka G. Communication in the Cancer Microenvironment as a Target for Therapeutic Interventions. Cancers (Basel) 2020; 12:E1232. [PMID: 32422889 PMCID: PMC7281160 DOI: 10.3390/cancers12051232] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/05/2020] [Accepted: 05/11/2020] [Indexed: 02/06/2023] Open
Abstract
The tumor microenvironment (TME) is a complex system composed of multiple cells, such as non-cancerous fibroblasts, adipocytes, immune and vascular cells, as well as signal molecules and mediators. Tumor cells recruit and reprogram other cells to produce factors that maintain tumor growth. Communication between cancerous and surrounding cells is a two-way process and engages a diverse range of mechanisms that, in consequence, can lead to rapid proliferation, metastasis, and drug resistance, or can serve as a tumors-suppressor, e.g., through tumor-immune cell interaction. Cross-talk within the cancer microenvironment can be direct by cell-to-cell contact via adhesion molecules, electrical coupling, and passage through gap junctions, or indirect through classical paracrine signaling by cytokines, growth factors, and extracellular vesicles. Therapeutic approaches for modulation of cell-cell communication may be a promising strategy to combat tumors. In particular, integrative approaches targeting tumor communication in combination with conventional chemotherapy seem reasonable. Currently, special attention is paid to suppressing the formation of open-ended channels as well as blocking exosome production or ablating their cargos. However, many aspects of cell-to-cell communication have yet to be clarified, and, in particular, more work is needed in regard to mechanisms of bidirectional signal transfer. Finally, it seems that some interactions in TEM can be not only cancer-specific, but also patient-specific, and their recognition would help to predict patient response to therapy.
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Affiliation(s)
- Agnieszka Dominiak
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland; (W.O.); (G.N.)
- Center for Preclinical Research, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Beata Chełstowska
- Department of Internal Medicine and Hematology, Laboratory of Hematology and Flow Cytometry, Military Institute of Medicine, 04-140 Warsaw, Poland;
| | - Wioletta Olejarz
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland; (W.O.); (G.N.)
- Center for Preclinical Research, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Grażyna Nowicka
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland; (W.O.); (G.N.)
- Center for Preclinical Research, Medical University of Warsaw, 02-097 Warsaw, Poland
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Hashimoto Y, Campbell M. Tight junction modulation at the blood-brain barrier: Current and future perspectives. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183298. [PMID: 32353377 DOI: 10.1016/j.bbamem.2020.183298] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 03/09/2020] [Accepted: 03/28/2020] [Indexed: 12/14/2022]
Abstract
The blood-brain barrier (BBB) is the one of the most robust physical barriers in the body, comprised of tight junction (TJ) proteins in brain microvascular endothelial cells. The need for drugs to treat central nervous systems diseases is ever increasing, however the presence of the BBB significantly hampers the uptake of drugs into the brain. To overcome or circumvent the barrier, many kinds of techniques are being developed. Modulating the paracellular route by disruption of the TJ complex has been proposed as a potential drug delivery system to treat brain diseases, however, it has several limitations and is still in a developmental stage. However, recent significant advance in medical equipment /tools such as targeted ultra-sound technologies may resolve these limitations. In this review, we introduce recent advances in site- or molecular size-selective BBB disruption/modulation technologies and we include details on pharmacological inhibitory molecules against intercellular TJ proteins to modulate the BBB.
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Affiliation(s)
- Yosuke Hashimoto
- Trinity College Dublin, Smurfit Institute of Genetics, Dublin 2, Ireland.
| | - Matthew Campbell
- Trinity College Dublin, Smurfit Institute of Genetics, Dublin 2, Ireland.
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