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Sittipo P, Anggradita LD, Kim H, Lee C, Hwang NS, Lee YK, Hwang Y. Cell Surface Modification-Mediated Primary Intestinal Epithelial Cell Culture Platforms for Assessing Host-Microbiota Interactions. Biomater Res 2024; 28:0004. [PMID: 38327615 PMCID: PMC10845607 DOI: 10.34133/bmr.0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 12/29/2023] [Indexed: 02/09/2024] Open
Abstract
Background: Intestinal epithelial cells (IECs) play a crucial role in regulating the symbiotic relationship between the host and the gut microbiota, thereby allowing them to modulate barrier function, mucus production, and aberrant inflammation. Despite their importance, establishing an effective ex vivo culture method for supporting the prolonged survival and function of primary IECs remains challenging. Here, we aim to develop a novel strategy to support the long-term survival and function of primary IECs in response to gut microbiota by employing mild reduction of disulfides on the IEC surface proteins with tris(2-carboxyethyl)phosphine. Methods: Recognizing the crucial role of fibroblast-IEC crosstalk, we employed a cell surface modification strategy, establishing layer-to-layer contacts between fibroblasts and IECs. This involved combining negatively charged chondroitin sulfate on cell surfaces with a positively charged chitosan thin film between cells, enabling direct intercellular transfer. Validation included assessments of cell viability, efficiency of dye transfer, and IEC function upon lipopolysaccharide (LPS) treatment. Results: Our findings revealed that the layer-by-layer co-culture platform effectively facilitates the transfer of small molecules through gap junctions, providing vital support for the viability and function of primary IECs from both the small intestine and colon for up to 5 days, as evident by the expression of E-cadherin and Villin. Upon LPS treatment, these IECs exhibited a down-regulation of Villin and tight junction genes, such as E-cadherin and Zonula Occludens-1, when compared to their nontreated counterparts. Furthermore, the transcription level of Lysozyme exhibited an increase, while Mucin 2 showed a decrease in response to LPS, indicating responsiveness to bacterial molecules. Conclusions: Our study provides a layer-by-layer-based co-culture platform to support the prolonged survival of primary IECs and their features, which is important for understanding IEC function in response to the gut microbiota.
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Affiliation(s)
- Panida Sittipo
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan-si, Chungnam-do 31151, Republic of Korea
| | - Laurensia Danis Anggradita
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan-si, Chungnam-do 31151, Republic of Korea
- Department of Integrated Biomedical Science,
Soonchunhyang University, Asan-si, Chungnam-do 31538, Republic of Korea
| | - Hyunbum Kim
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan-si, Chungnam-do 31151, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes,
Seoul National University, Seoul 08826, Republic of Korea
| | - Chanyoung Lee
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan-si, Chungnam-do 31151, Republic of Korea
- Department of Integrated Biomedical Science,
Soonchunhyang University, Asan-si, Chungnam-do 31538, Republic of Korea
| | - Nathaniel S. Hwang
- School of Chemical and Biological Engineering, Institute of Chemical Processes,
Seoul National University, Seoul 08826, Republic of Korea
- Bio-MAX/N-Bio Institute, Institute of Bio-Engineering,
Seoul National University, Seoul 08826, Republic of Korea
- Institute of Engineering Research,
Seoul National University, Seoul 08826, Republic of Korea
| | - Yun Kyung Lee
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan-si, Chungnam-do 31151, Republic of Korea
- Department of Integrated Biomedical Science,
Soonchunhyang University, Asan-si, Chungnam-do 31538, Republic of Korea
| | - Yongsung Hwang
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan-si, Chungnam-do 31151, Republic of Korea
- Department of Integrated Biomedical Science,
Soonchunhyang University, Asan-si, Chungnam-do 31538, Republic of Korea
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He Y, Cheng M, Yang R, Li H, Lu Z, Jin Y, Feng J, Tu L. Research Progress on the Mechanism of Nanoparticles Crossing the Intestinal Epithelial Cell Membrane. Pharmaceutics 2023; 15:1816. [PMID: 37514003 PMCID: PMC10384977 DOI: 10.3390/pharmaceutics15071816] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/14/2023] [Accepted: 06/19/2023] [Indexed: 07/30/2023] Open
Abstract
Improving the stability of drugs in the gastrointestinal tract and their penetration ability in the mucosal layer by implementing a nanoparticle delivery strategy is currently a research focus in the pharmaceutical field. However, for most drugs, nanoparticles failed in enhancing their oral absorption on a large scale (4 folds or above), which hinders their clinical application. Recently, several researchers have proved that the intestinal epithelial cell membrane crossing behaviors of nanoparticles deeply influenced their oral absorption, and relevant reviews were rare. In this paper, we systematically review the behaviors of nanoparticles in the intestinal epithelial cell membrane and mainly focus on their intracellular mechanism. The three key complex intracellular processes of nanoparticles are described: uptake by intestinal epithelial cells on the apical side, intracellular transport and basal side exocytosis. We believe that this review will help scientists understand the in vivo performance of nanoparticles in the intestinal epithelial cell membrane and assist in the design of novel strategies for further improving the bioavailability of nanoparticles.
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Affiliation(s)
- Yunjie He
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, Nanchang 330006, China
| | - Meng Cheng
- The Affiliated Hospital of Jiangxi University of Chinese Medicine, Nanchang 330006, China
| | - Ruyue Yang
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, Nanchang 330006, China
| | - Haocheng Li
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, Nanchang 330006, China
| | - Zhiyang Lu
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, Nanchang 330006, China
| | - Yi Jin
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, Nanchang 330006, China
| | - Jianfang Feng
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, Nanchang 330006, China
- School of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Liangxing Tu
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, Nanchang 330006, China
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Lactiplantibacillus plantarum LOC1 Isolated from Fresh Tea Leaves Modulates Macrophage Response to TLR4 Activation. Foods 2022. [DOI: 10.3390/foods11203257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Previously, we demonstrated that Lactiplantibacillus plantarum LOC1, originally isolated from fresh tea leaves, was able to improve epithelial barrier integrity in in vitro models, suggesting that this strain is an interesting probiotic candidate. In this work, we aimed to continue characterizing the potential probiotic properties of the LOC1 strain, focusing on its immunomodulatory properties in the context of innate immunity triggered by Toll-like receptor 4 (TLR4) activation. These studies were complemented by comparative and functional genomics analysis to characterize the bacterial genes involved in the immunomodulatory capacity. We carried out a transcriptomic study to evaluate the effect of L. plantarum LOC1 on the response of murine macrophages (RAW264.7 cells) to the activation of TLR4. We demonstrated that L. plantarum LOC1 exerts a modulatory effect on lipopolysaccharide (LPS)-induced inflammation, resulting in a differential regulation of immune factor expression in macrophages. The LOC1 strain markedly reduced the LPS-induced expression of some inflammatory cytokines (IL-1β, IL-12, and CSF2) and chemokines (CCL17, CCL28, CXCL3, CXCL13, CXCL1, and CX3CL1), while it significantly increased the expression of other cytokines (TNF-α, IL-6, IL-18, IFN-β, IFN-γ, and CSF3), chemokines (IL-15 and CXCL9), and activation markers (H2-k1, H2-M3, CD80, and CD86) in RAW macrophages. Our results show that L. plantarum LOC1 would enhance the intrinsic functions of macrophages, promoting their protective effects mediated by the stimulation of the Th1 response without affecting the regulatory mechanisms that help control inflammation. In addition, we sequenced the LOC1 genome and performed a genomic characterization. Genomic comparative analysis with the well-known immunomodulatory strains WCSF1 and CRL1506 demonstrated that L. plantarum LOC1 possess a set of adhesion factors and genes involved in the biosynthesis of teichoic acids and lipoproteins that could be involved in its immunomodulatory capacity. The results of this work can contribute to the development of immune-related functional foods containing L. plantarum LOC1.
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Araki A, Jin L, Nara H, Takeda Y, Nemoto N, Gazi MY, Asao H. IL-21 Enhances the Development of Colitis-Associated Colon Cancer: Possible Involvement of Activation-Induced Cytidine Deaminase Expression. THE JOURNAL OF IMMUNOLOGY 2019; 202:3326-3333. [DOI: 10.4049/jimmunol.1800550] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 03/26/2019] [Indexed: 02/06/2023]
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Ren HJ, Zhang CL, Liu RD, Li N, Li XG, Xue HK, Guo Y, Wang ZQ, Cui J, Ming L. Primary cultures of mouse small intestinal epithelial cells using the dissociating enzyme type I collagenase and hyaluronidase. ACTA ACUST UNITED AC 2017; 50:e5831. [PMID: 28423120 PMCID: PMC5441283 DOI: 10.1590/1414-431x20175831] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 02/20/2017] [Indexed: 12/16/2022]
Abstract
The epithelium is a highly dynamic system, which plays a crucial role in the homeostasis of the intestinal tract. However, studies on the physiological and pathophysiological functions of intestinal epithelial cells (IECs) have been hampered due to lack of normal epithelial cell models. In the present study, we established a reproducible method for primary culture of mouse IECs, which were isolated from the viable small intestinal crypts of murine fetuses (on embryonic day 19), using type I collagenase and hyaluronidase in a short span of time (≤20 min). With this method, continuously growing mouse IECs, which can be subcultured over a number of passages, were obtained. The obtained cell lines formed a tight cobblestone-like arrangement, displayed long and slender microvilli, expressed characteristic markers (cytokeratin 18 and Notch-1), and generated increasing transepithelial electrical resistance and low paracellular permeability during in vitro culture. The cells also had enzymatic activities of alkaline phosphatase and sucrase-isomaltase, and secreted various cytokines (IL-1β, IL-6, IL-8, and monocyte chemoattractant protein-1), responding to the stimulation of Escherichia coli. These results show that the primary-cultured mouse IECs obtained by the method established here had the morphological and immunological characteristics of IECs. This culture system can be a beneficial in vitro model for studies on mucosal immunology and toxicology.
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Affiliation(s)
- H J Ren
- Department of Clinical Laboratory, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Key Clinical Laboratory of Henan Province, Zhengzhou, Henan, China
| | - C L Zhang
- Department of General Surgery, the People's Hospital of Zhengzhou, Zhengzhou, Henan, China
| | - R D Liu
- Department of Parasitology, Medical College, Zhengzhou University, Zhengzhou, Henan, China
| | - N Li
- Department of Clinical Laboratory, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Key Clinical Laboratory of Henan Province, Zhengzhou, Henan, China
| | - X G Li
- Department of Clinical Laboratory, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Key Clinical Laboratory of Henan Province, Zhengzhou, Henan, China
| | - H K Xue
- Department of Clinical Laboratory, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Key Clinical Laboratory of Henan Province, Zhengzhou, Henan, China
| | - Y Guo
- Department of Clinical Laboratory, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Key Clinical Laboratory of Henan Province, Zhengzhou, Henan, China
| | - Z Q Wang
- Department of Parasitology, Medical College, Zhengzhou University, Zhengzhou, Henan, China
| | - J Cui
- Department of Parasitology, Medical College, Zhengzhou University, Zhengzhou, Henan, China
| | - L Ming
- Department of Clinical Laboratory, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Key Clinical Laboratory of Henan Province, Zhengzhou, Henan, China
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Zhan K, Jiang M, Sui Y, Yan K, Lin M, Zhao G. Establishment of immortalized mouse intestinal epithelial cells line and study of effects of Arg-Arg on inflammatory response. In Vitro Cell Dev Biol Anim 2017; 53:538-546. [PMID: 28342021 DOI: 10.1007/s11626-017-0143-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 02/16/2017] [Indexed: 12/31/2022]
Abstract
Primary mouse intestinal epithelial cells (MIEs) are not ideal models for long-term culture in vitro and a limited amount of approximate three generations. In addition, the mechanism that arginine-arginine dipeptide (Arg-Arg) regulates mouse intestinal inflammatory response remains unknown. Therefore, the aim of this study was to establish immortal MIEs and study the effects of Arg-Arg on inflammatory response after challenging the MIEs with lipopolysaccharide (LPS) or staphylococcal enterotoxin C (rSEC). Our data showed that immortalized MIEs could be cultured over 100 generations. The immortalized MIEs showed positive reaction against cytokeratine 18 antigen, E-cadherin, and peptide transporters (Pept1) using indirect immunofluorescence. Cytokeratine 18 and Pept1 can be expressed in immortalized MIEs by immunoblotting. Fatty acid-binding proteins (FABPs) and villin known as intestinal epithelial cell functional protein were constitutively expressed in immortalized MIEs. For inflammatory response, these results showed that Arg-Arg can decrease the LPS-induced expression of IL-1β and the rSEC-induced expression of TNF-α; however, it can upregulate the LPS-induced expression of IL-6 and TNF-α and the rSEC-induced expression level of IL-1β. In addition, in the MAPK signaling pathway, pSAPK/JNK and p-Erk1/2 in LPS with Arg-Arg treatment were upregulated than that in LPS treatment. p-p38 in LPS with Arg-Arg treatment was attenuated than that in LPS treatment. pSAPK/JNK and p-p38 in rSEC with Arg-Arg treatment were enhanced than that in rSEC treatment. Conversely, p-Erk1/2 in rSEC with Arg-Arg treatment was attenuated than that in rSEC treatment. These novel findings suggest that Arg-Arg dipeptide plays an important role for regulation of the immunologic balance in mouse intestinal inflammatory response.
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Affiliation(s)
- Kang Zhan
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Maocheng Jiang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Yannan Sui
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Kang Yan
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Miao Lin
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Guoqi Zhao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, People's Republic of China.
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7
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Hondo T, Someya S, Nagasawa Y, Terada S, Watanabe H, Chen X, Watanabe K, Ohwada S, Kitazawa H, Rose MT, Nochi T, Aso H. Cyclophilin A is a new M cell marker of bovine intestinal epithelium. Cell Tissue Res 2016; 364:585-597. [DOI: 10.1007/s00441-015-2342-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Accepted: 12/03/2015] [Indexed: 12/20/2022]
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8
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Trappe TA, Ratchford SM, Brower BE, Liu SZ, Lavin KM, Carroll CC, Jemiolo B, Trappe SW. COX Inhibitor Influence on Skeletal Muscle Fiber Size and Metabolic Adaptations to Resistance Exercise in Older Adults. J Gerontol A Biol Sci Med Sci 2016; 71:1289-94. [PMID: 26817469 DOI: 10.1093/gerona/glv231] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 12/08/2015] [Indexed: 02/07/2023] Open
Abstract
Common cyclooxygenase (COX)-inhibiting drugs enhance resistance exercise induced muscle mass and strength gains in older individuals. The purpose of this investigation was to determine whether the underlying mechanism regulating this effect was specific to Type I or Type II muscle fibers, which have different contractile and metabolic profiles. Muscle biopsies (vastus lateralis) were obtained before and after 12 weeks of knee-extensor resistance exercise (3 days/week) from healthy older men who consumed either a placebo (n = 8; 64±2 years) or COX inhibitor (acetaminophen, 4 gram/day; n = 7; 64±1 years) in double-blind fashion. Muscle samples were examined for Type I and II fiber cross-sectional area, capillarization, and metabolic enzyme activities (glycogen phosphorylase, citrate synthase, β-hydroxyacyl-CoA-dehydrogenase). Type I fiber size did not change with training in the placebo group (304±590 μm(2)) but increased 28% in the COX inhibitor group (1,388±760 μm(2), p < .1). Type II fiber size increased 26% in the placebo group (1,432±499 μm(2), p < .05) and 37% in the COX inhibitor group (1,825±400 μm(2), p < .05). Muscle capillarization and enzyme activity were generally maintained in the placebo group. However, capillary to fiber ratio increased 24% (p < .1) and citrate synthase activity increased 18% (p < .05) in the COX inhibitor group. COX inhibitor consumption during resistance exercise in older individuals enhances myocellular growth, and this effect is more pronounced in Type I muscle fibers.
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Affiliation(s)
- Todd A Trappe
- Human Performance Laboratory, Ball State University, Muncie, Indiana.
| | | | - Brooke E Brower
- Human Performance Laboratory, Ball State University, Muncie, Indiana
| | - Sophia Z Liu
- Human Performance Laboratory, Ball State University, Muncie, Indiana
| | - Kaleen M Lavin
- Human Performance Laboratory, Ball State University, Muncie, Indiana
| | - Chad C Carroll
- Human Performance Laboratory, Ball State University, Muncie, Indiana
| | - Bozena Jemiolo
- Human Performance Laboratory, Ball State University, Muncie, Indiana
| | - Scott W Trappe
- Human Performance Laboratory, Ball State University, Muncie, Indiana
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Wang J, Hu G, Gao W, Xu L, Ning P, Zhang Y. Immortalized porcine intestinal epithelial cell cultures susceptible to porcine rotavirus infection. J Virol Methods 2014; 202:87-94. [PMID: 24642240 DOI: 10.1016/j.jviromet.2014.03.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 02/13/2014] [Accepted: 03/04/2014] [Indexed: 11/17/2022]
Abstract
In vitro studies related to various viral pathogenesis in swine have been hampered by the lack of relevant porcine cell lines. The susceptibility to porcine rotavirus infection was evaluated by using a newly established porcine intestinal epithelial cell line. Immunohistochemical staining for cytokeratin confirmed that the cultured cells were epithelial cells. Measurement of cell viability and detection of infected cells confirmed that these epithelial cells were susceptible to porcine rotavirus infection. This study describes the cytopathic changes in cultured porcine intestinal epithelial cells during virus invasion. Following infection with porcine rotavirus, the cell cultures contained viral protein at 16 h post-infection as detected by direct immunofluorescence. The epithelial cell cultures provided competent target cells for studying host cell responses to porcine rotavirus and a homologous system for investigating the response of intestinal epithelial cells during viral infection.
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Affiliation(s)
- Jing Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Guangdong Hu
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Wanjun Gao
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Lei Xu
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Pengbo Ning
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yanming Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.
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Zha XQ, Zhao HW, Bansal V, Pan LH, Wang ZM, Luo JP. Immunoregulatory activities of Dendrobium huoshanense polysaccharides in mouse intestine, spleen and liver. Int J Biol Macromol 2014; 64:377-82. [PMID: 24370476 PMCID: PMC5941306 DOI: 10.1016/j.ijbiomac.2013.12.032] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 12/11/2013] [Accepted: 12/18/2013] [Indexed: 11/15/2022]
Abstract
To evaluate the immunomodulating responses in intestine, spleen and liver, 50-200mg/kg of DHP was orally administrated to mice without or with methotrexate. The proliferation of marrow cells, which was performed with the addition of the supernatant of small intestinal lymphocytes isolated from the mice administrated orally with DHP, showed that the intestinal immune response was significantly enhanced in all DHP-treated groups. For the immune response in spleen, all tested doses of DHP remarkably promoted the proliferation of splenic cells and increased the secretion of interferon-γ (IFN-γ). For the immune responses in liver, DHP not only significantly stimulated the proliferation of hepatic cells and the secretion of IFN-γ at all tested doses of DHP, but also significantly elevated the secretion interleukin-4 (IL-4) at the doses of 100 and 200mg/kg. Moreover, DHP could recover methotrexate-injured small intestinal immune function (100 and 200mg/kg) and promoted cell proliferation and IFN-γ production (200mg/kg) in spleen and liver of methotrexate-treated mice. These results suggested that DHP after oral administration possessed immunomodulating effects both in small intestine immune system and in systemic immune system, which were further proved by the mRNA expression of IFN-γ and IL-4.
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Affiliation(s)
- Xue-Qiang Zha
- School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, PR China
| | - Hong-Wei Zhao
- School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, PR China
| | - Vibha Bansal
- Department of Chemistry, University of Puerto Rico at Cayey, No. 225 Antonio R. Barcelo Avenue, Cayey, PR 00736-9997, United States
| | - Li-Hua Pan
- School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, PR China
| | - Zheng-Ming Wang
- School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, PR China
| | - Jian-Ping Luo
- School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, PR China.
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Thomson ABR, Chopra A, Clandinin MT, Freeman H. Recent advances in small bowel diseases: Part I. World J Gastroenterol 2012; 18:3336-52. [PMID: 22807604 PMCID: PMC3396187 DOI: 10.3748/wjg.v18.i26.3336] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 04/05/2012] [Accepted: 04/13/2012] [Indexed: 02/06/2023] Open
Abstract
As is the case in all parts of gastroenterology and hepatology, there have been many advances in our knowledge and understanding of small intestinal diseases. Over 1000 publications were reviewed for 2008 and 2009, and the important advances in basic science as well as clinical applications were considered. In Part I of this Editorial Review, seven topics are considered: intestinal development; proliferation and repair; intestinal permeability; microbiotica, infectious diarrhea and probiotics; diarrhea; salt and water absorption; necrotizing enterocolitis; and immunology/allergy. These topics were chosen because of their importance to the practicing physician.
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Ebisawa M, Hase K, Takahashi D, Kitamura H, Knoop KA, Williams IR, Ohno H. CCR6hiCD11c(int) B cells promote M-cell differentiation in Peyer's patch. Int Immunol 2011; 23:261-9. [PMID: 21422150 DOI: 10.1093/intimm/dxq478] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
M cells are responsible for uptake of mucosal antigens in Peyer's patches (PPs). Differentiation of M cells is thought to be induced by interactions between follicle-associated epithelium and PP cells; however, it remains elusive what types of immune cells function as M-cell inducers. Here, we attempted to identify the cells that serve as an M-cell inducer in PP. We found that a unique B-cell subset characterized by CCR6(hi)CD11c(int) resided in the subepithelial dome (SED) in mouse PP. CCR6(hi)CD11c(int) B cells showed chemotactic migration in response to CCL20. Furthermore, this unique B-cell subset substantially decreased in PP of CCR6-deficient mice, indicating that the SED localization of CCR6(hi)CD11c(int) B cells is most likely regulated by the CCL20-CCR6 system. Concomitantly, CCR6 deficiency caused remarkable decrement of M cells. Moreover, adoptive transfer of CCR6(hi)CD11c(int) B cells from wild-type mice restored the M-cell decrement in CCR6-deficient mice. Collectively, the spatial regulation of CCR6(hi)CD11c(int) B cells via the CCL20-CCR6 system may play a vital role in M-cell differentiation in mice.
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Affiliation(s)
- Masashi Ebisawa
- Laboratory for Epithelial Immunobiology, Research Center for Allergy and Immunology, RIKEN, Yokohama, Kanagawa 230-0045, Japan
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Transcytosis of murine-adapted bovine spongiform encephalopathy agents in an in vitro bovine M cell model. J Virol 2010; 84:12285-91. [PMID: 20861256 DOI: 10.1128/jvi.00969-10] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Transmissible spongiform encephalopathies (TSE), including bovine spongiform encephalopathy (BSE), are fatal neurodegenerative disorders in humans and animals. BSE appears to have spread to cattle through the consumption of feed contaminated with BSE/scrapie agents. In the case of an oral infection, the agents have to cross the gut-epithelial barrier. We recently established a bovine intestinal epithelial cell line (BIE cells) that can differentiate into the M cell type in vitro after lymphocytic stimulation (K. Miyazawa, T. Hondo, T. Kanaya, S. Tanaka, I. Takakura, W. Itani, M. T. Rose, H. Kitazawa, T. Yamaguchi, and H. Aso, Histochem. Cell Biol. 133:125-134, 2010). In this study, we evaluated the role of M cells in the intestinal invasion of the murine-adapted BSE (mBSE) agent using our in vitro bovine intestinal epithelial model. We demonstrate here that M cell-differentiated BIE cells are able to transport the mBSE agent without inactivation at least 30-fold more efficiently than undifferentiated BIE cells in our in vitro model. As M cells in the follicle-associated epithelium are known to have a high ability to transport a variety of macromolecules, viruses, and bacteria from gut lumen to mucosal immune cells, our results indicate the possibility that bovine M cells are able to deliver agents of TSE, not just the mBSE agent.
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Choi YJ, Im E, Chung HK, Pothoulakis C, Rhee SH. TRIF mediates Toll-like receptor 5-induced signaling in intestinal epithelial cells. J Biol Chem 2010. [PMID: 20855887 DOI: 10.1074/ibc.m110.158394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Toll-like receptors (TLRs) associate with adaptor molecules (MyD88, Mal/TIRAP, TRAM, and TRIF) to mediate signaling of host-microbial interaction. For instance, TLR4 utilizes the combination of both Mal/TIRAP-MyD88 (MyD88-dependent pathway) and TRAM-TRIF (MyD88-independent pathway). However, TLR5, the specific receptor for flagellin, is known to utilize only MyD88 to elicit inflammatory responses, and an involvement of other adaptor molecules has not been suggested in TLR5-dependent signaling. Here, we found that TRIF is involved in mediating TLR5-induced nuclear factor κB (NFκB) and mitogen-activated protein kinases (MAPKs), specifically JNK1/2 and ERK1/2, activation in intestinal epithelial cells. TLR5 activation by flagellin permits the physical interaction between TLR5 and TRIF in human colonic epithelial cells (NCM460), whereas TLR5 does not interact with TRAM upon flagellin stimulation. Both primary intestinal epithelial cells from TRIF-KO mice and TRIF-silenced NCM460 cells significantly reduced flagellin-induced NFκB (p105 and p65), JNK1/2, and ERK1/2 activation compared with control cells. However, p38 activation by flagellin was preserved in these TRIF-deficient cells. TRIF-KO intestinal epithelial cells exhibited substantially reduced inflammatory cytokine (keratinocyte-derived cytokine, macrophage inflammatory protein 3α, and IL-6) expression upon flagellin, whereas control cells from TRIF-WT mice showed robust cytokine expression by flagellin. Compare with TRIF-WT mice, TRIF-KO mice were resistant to in vivo intestinal inflammatory responses: flagellin-mediated exacerbation of colonic inflammation and dextran sulfate sodium-induced experimental colitis. We conclude that in addition to MyD88, TRIF mediates TLR5-dependent responses and, thereby regulates inflammatory responses elicited by flagellin/TLR5 engagement. Our findings suggest an important role of TRIF in regulating host-microbial communication via TLR5 in the gut epithelium.
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Affiliation(s)
- Yoon Jeong Choi
- Division of Digestive Diseases, David Geffen School of Medicine, UCLA, Los Angeles, California 90095, USA
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Choi YJ, Im E, Chung HK, Pothoulakis C, Rhee SH. TRIF mediates Toll-like receptor 5-induced signaling in intestinal epithelial cells. J Biol Chem 2010; 285:37570-8. [PMID: 20855887 DOI: 10.1074/jbc.m110.158394] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Toll-like receptors (TLRs) associate with adaptor molecules (MyD88, Mal/TIRAP, TRAM, and TRIF) to mediate signaling of host-microbial interaction. For instance, TLR4 utilizes the combination of both Mal/TIRAP-MyD88 (MyD88-dependent pathway) and TRAM-TRIF (MyD88-independent pathway). However, TLR5, the specific receptor for flagellin, is known to utilize only MyD88 to elicit inflammatory responses, and an involvement of other adaptor molecules has not been suggested in TLR5-dependent signaling. Here, we found that TRIF is involved in mediating TLR5-induced nuclear factor κB (NFκB) and mitogen-activated protein kinases (MAPKs), specifically JNK1/2 and ERK1/2, activation in intestinal epithelial cells. TLR5 activation by flagellin permits the physical interaction between TLR5 and TRIF in human colonic epithelial cells (NCM460), whereas TLR5 does not interact with TRAM upon flagellin stimulation. Both primary intestinal epithelial cells from TRIF-KO mice and TRIF-silenced NCM460 cells significantly reduced flagellin-induced NFκB (p105 and p65), JNK1/2, and ERK1/2 activation compared with control cells. However, p38 activation by flagellin was preserved in these TRIF-deficient cells. TRIF-KO intestinal epithelial cells exhibited substantially reduced inflammatory cytokine (keratinocyte-derived cytokine, macrophage inflammatory protein 3α, and IL-6) expression upon flagellin, whereas control cells from TRIF-WT mice showed robust cytokine expression by flagellin. Compare with TRIF-WT mice, TRIF-KO mice were resistant to in vivo intestinal inflammatory responses: flagellin-mediated exacerbation of colonic inflammation and dextran sulfate sodium-induced experimental colitis. We conclude that in addition to MyD88, TRIF mediates TLR5-dependent responses and, thereby regulates inflammatory responses elicited by flagellin/TLR5 engagement. Our findings suggest an important role of TRIF in regulating host-microbial communication via TLR5 in the gut epithelium.
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Affiliation(s)
- Yoon Jeong Choi
- Division of Digestive Diseases, David Geffen School of Medicine, UCLA, Los Angeles, California 90095, USA
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Hsieh EH, Fernandez X, Wang J, Hamer M, Calvillo S, Croft M, Kwon BS, Lo DD. CD137 is required for M cell functional maturation but not lineage commitment. THE AMERICAN JOURNAL OF PATHOLOGY 2010; 177:666-76. [PMID: 20616340 DOI: 10.2353/ajpath.2010.090811] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Mucosal immune surveillance depends on M cells that reside in the epithelium overlying Peyer's patch and nasopharyngeal associated lymphoid tissue to transport particles to underlying lymphocytes. M cell development is associated with B lymphocytes in a basolateral pocket, but the interactions between these cells are poorly understood. In a cell culture model of M cell differentiation, we found lymphotoxin/tumor necrosis factor alpha induction of CD137 (TNFRSF9) protein on intestinal epithelial cell lines, raising the possibility that CD137 on M cells in vivo might interact with CD137L expressed by B cells. Accordingly, while CD137-deficient mice produced UEA-1+ M cell progenitors in nasopharyngeal associated lymphoid tissue and Peyer's patch epithelium, they showed an abnormal morphology, including the absence of basolateral B cell pockets. More important, CD137-deficient nasopharyngeal associated lymphoid tissue M cells were defective in microparticle transcytosis. Bone marrow irradiation chimeras confirmed that while induction of UEA-1+ putative M cell precursors was not CD137-dependent, full M cell transcytosis function required expression of CD137 by radioresistant stromal cells as well as by bone marrow-derived cells. These results are consistent with a two-step model of M cell differentiation, with initial CD137-independent commitment to the M cell lineage followed by a CD137-CD137L interaction of M cells with CD137-activated B lymphocytes or dendritic cells for functional maturation.
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Affiliation(s)
- En Hui Hsieh
- Division of Biomedical Sciences, University of California, Riverside, Riverside, CA 92521, USA
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Characterization of newly established bovine intestinal epithelial cell line. Histochem Cell Biol 2009; 133:125-34. [PMID: 19830445 DOI: 10.1007/s00418-009-0648-3] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2009] [Indexed: 10/20/2022]
Abstract
Membranous epithelial cells (M cells) of the follicle-associated epithelium in Peyer's patches have a high capacity for transcytosis of several viruses and microorganisms. Here, we report that we have successfully established a bovine intestinal epithelial cell line (BIE cells) and developed an in vitro M cell model. BIE cells have a cobblestone morphology and microvilli-like structures, and strongly express cell-to-cell junctional proteins and cytokeratin, which is a specific intermediate filament protein of epithelial cells. After co-culture with murine intestinal lymphocytes or treatment with supernatant from bovine PBMC cultured with IL-2, BIE cells acquired the ability of transcytosis. Therefore, BIE cells have typical characteristics of bovine intestinal epithelial cells and also have the ability to differentiate into an M cell like linage. In addition, our results indicate that contact between immune cells and epithelial cells may not be absolutely required for the differentiation of M cells. We think that BIE cells will be useful for studying the transport mechanisms of various pathogens and also the evaluation of drug delivery via M cells.
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