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Zhang G, Lu M, Liu R, Tian Y, Vu VH, Li Y, Liu B, Kushmaro A, Li Y, Sun Q. Inhibition of Streptococcus mutans Biofilm Formation and Virulence by Lactobacillus plantarum K41 Isolated From Traditional Sichuan Pickles. Front Microbiol 2020; 11:774. [PMID: 32425911 PMCID: PMC7203412 DOI: 10.3389/fmicb.2020.00774] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 03/31/2020] [Indexed: 02/05/2023] Open
Abstract
Among cariogenic microbes, Streptococcus mutans is considered a major etiological pathogen of dental caries. Lactobacilli strains have been promoted as possible probiotic agents against S. mutans, although the inhibitory effect of Lactobacilli on caries has not yet been properly addressed. The objective of this study was to screen Lactobacillus strains found in traditional Sichuan pickles and to evaluate their antagonistic properties against S. mutans in vitro and in vivo. In the current study, we analyzed 54 Lactobacillus strains isolated from pickles and found that strain L. plantarum K41 showed the highest inhibitory effect on S. mutans growth as well as on the formation of exopolysaccharides (EPS) and biofilm in vitro. Scanning electron microscopy (SEM) and confocal laser scanning microscope (CLSM) revealed the reduction of both EPS and of the network-like structure in S. mutans biofilm when these bacteria were co-cultured with strain L. plantarum K41. Furthermore, when rats were treated with strain L. plantarum K41, there was a significant reduction in the incidence and severity of dental caries. Due to K41's origin in a high salinity environment, it showed a high tolerance to acids and salts. This may give this strain an advantage in harsh oral conditions. Results showed that L. plantarum K41 isolated from traditional Sichuan pickles effectively inhibited S. mutans biofilm formation and thus possesses a potential inhibitory effect on dental caries in vivo.
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Affiliation(s)
- Guojian Zhang
- Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu, China
| | - Miao Lu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodonics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Rongmei Liu
- Key Laboratory of Bio-resources & Eco-environment of the Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Yuanyuan Tian
- Key Laboratory of Bio-resources & Eco-environment of the Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Viet Ha Vu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodonics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yang Li
- Key Laboratory of Bio-resources & Eco-environment of the Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Bao Liu
- Key Laboratory of Bio-resources & Eco-environment of the Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Ariel Kushmaro
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Yuqing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodonics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qun Sun
- Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu, China
- Key Laboratory of Bio-resources & Eco-environment of the Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
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CyclinD1, CDK4, and P21 expression by IEC-6 cells in response to NiTi alloy and polymeric biomaterials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012. [DOI: 10.1016/j.msec.2012.05.049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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RGD-Dependent Epithelial Cell-Matrix Interactions in the Human Intestinal Crypt. JOURNAL OF SIGNAL TRANSDUCTION 2012; 2012:248759. [PMID: 22988499 PMCID: PMC3440950 DOI: 10.1155/2012/248759] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 07/05/2012] [Accepted: 07/22/2012] [Indexed: 01/09/2023]
Abstract
Interactions between the extracellular matrix (ECM) and integrin receptors trigger structural and functional bonds between the cell microenvironment and the cytoskeleton. Such connections are essential for adhesion structure integrity and are key players in regulating transduction of specific intracellular signals, which in turn regulate the organization of the cell microenvironment and, consequently, cell function. The RGD peptide-dependent integrins represent a key subgroup of ECM receptors involved in the maintenance of epithelial homeostasis. Here we review recent findings on RGD-dependent ECM-integrin interactions and their roles in human intestinal epithelial crypt cells.
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Wang Z, Yan J, Zheng Q, Wang Z, Li J, Zhang X, Zhang S. Effects of biodegradable Mg–6Zn alloy extracts on cell cycle of intestinal epithelial cells. J Biomater Appl 2011; 27:739-47. [DOI: 10.1177/0885328211424518] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study, intestinal epithelial cells (IEC)-6 were cultured in different concentration extracts of Mg–6Zn alloys for different time periods. We studied the indirect effects of Mg–6Zn alloys on cell cycle of IEC-6 cells. The cell cycle of IEC-6 cells was measured using flow cytometry. And, the cell cycle of IEC-6 cells was evaluated by investigating the expression of cyclin D1, CDK4, and P21 using real-time polymerase chain reaction (PCR) and Western blotting tests. It was found that the IEC-6 cells displayed better cell functions in 20% extract of the Mg–6Zn alloy extracts, compared to the 100% or 60% extract. The in vitro results indicated that the conspicuous alkaline environment that is a result of rapid corrosion of Mg–6Zn alloys is disadvantageous to cell cycle of IEC-6 cells.
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Affiliation(s)
- Zhanhui Wang
- Shanghai Jiaotong University School of Medicine, 227 South Chongqing Road, Shanghai 200025, PR China
| | - Jun Yan
- Department of General Surgery, Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai 200233, PR China
| | - Qi Zheng
- Shanghai Jiaotong University School of Medicine, 227 South Chongqing Road, Shanghai 200025, PR China
- Department of General Surgery, Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai 200233, PR China
| | - Zhigang Wang
- Department of General Surgery, Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai 200233, PR China
| | - Jianan Li
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Xiaonong Zhang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Shaoxiang Zhang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
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Hao HF, Naomoto Y, Bao XH, Watanabe N, Sakurama K, Noma K, Tomono Y, Fukazawa T, Shirakawa Y, Yamatsuji T, Matsuoka J, Takaoka M. Progress in researches about focal adhesion kinase in gastrointestinal tract. World J Gastroenterol 2009; 15:5916-23. [PMID: 20014455 PMCID: PMC2795178 DOI: 10.3748/wjg.15.5916] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Focal adhesion kinase (FAK) is a 125-kDa non-receptor protein tyrosine. Growth factors or the clustering of integrins facilitate the rapid phosphorylation of FAK at Tyr-397 and this in turn recruits Src-family protein tyrosine kinases, resulting in the phosphorylation of Tyr-576 and Tyr-577 in the FAK activation loop and full catalytic FAK activation. FAK plays a critical role in the biological processes of normal and cancer cells including the gastrointestinal tract. FAK also plays an important role in the restitution, cell survival and apoptosis and carcinogenesis of the gastrointestinal tract. FAK is over-expressed in cancer cells and its over-expression and elevated activities are associated with motility and invasion of cancer cells. FAK has been proposed as a potential target in cancer therapy. Small molecule inhibitors effectively inhibit the kinase activity of FAK and show a potent inhibitory effect for the proliferation and migration of tumor cells, indicating a high potential for application in cancer therapy.
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Gagné D, Groulx JF, Benoit YD, Basora N, Herring E, Vachon PH, Beaulieu JF. Integrin-linked kinase regulates migration and proliferation of human intestinal cells under a fibronectin-dependent mechanism. J Cell Physiol 2009; 222:387-400. [PMID: 19885839 PMCID: PMC2814089 DOI: 10.1002/jcp.21963] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Integrin-linked kinase (ILK) plays a role in integrin signaling-mediated extracellular matrix (ECM)–cell interactions and also acts as a scaffold protein in functional focal adhesion points. In the present study, we investigated the expression and roles of ILK in human intestinal epithelial cells (IECs) in vivo and in vitro. Herein, we report that ILK and its scaffold-function interacting partners, PINCH-1, α-parvin, and β-parvin, are expressed according to a decreasing gradient from the bottom of the crypt (proliferative/undifferentiated) compartment to the tip of the villus (non-proliferative/differentiated) compartment, closely following the expression pattern of the ECM/basement membrane component fibronectin. The siRNA knockdown of ILK in human IECs caused a loss of PINCH-1, α-parvin, and β-parvin expression, along with a significant decrease in cell proliferation via a loss of cyclin D1 and an increase in p27 and hypophosphorylated pRb expression levels. ILK knockdown severely affected cell spreading, migration, and restitution abilities, which were shown to be directly related to a decrease in fibronectin deposition. All ILK knockdown-induced defects were rescued with exogenously deposited fibronectin. Altogether, our results indicate that ILK performs crucial roles in the control of human intestinal cell and crypt–villus axis homeostasis—especially with regard to basement membrane fibronectin deposition—as well as cell proliferation, spreading, and migration. J. Cell. Physiol. 222: 387–400, 2010. © 2009 Wiley-Liss, Inc.
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Affiliation(s)
- David Gagné
- CIHR Team on the Digestive Epithelium, Département d'Anatomie et de Biologie Cellulaire, Université de Sherbrooke, Sherbrooke, Québec, Canada
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Hagerman E, Shim J, Gupta V, Wu B. Evaluation of laser spallation as a technique for measurement of cell adhesion strength. J Biomed Mater Res A 2007; 82:852-60. [PMID: 17335015 DOI: 10.1002/jbm.a.31011] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Cell adhesion to material surfaces is one of the fundamental phenomena of cellular response to implanted devices. Controlling the strength, dynamics, and mechanics of cell adhesion offer opportunities for designing novel biomaterials for tissue engineering and biotechnology. Many techniques have been developed for the purpose of quantifying various types of cell-biomaterial interaction. One method to evaluate cell affinity for a biomaterial is to measure the stress required to remove adherent cells from the material. This study investigates the possibility of using laser spallation, a technique previously developed for measuring the tensile strength of thin film interfaces, for evaluation of initial cell attachment strength. MC3T3-E1 preosteoblasts were cultured on fibronectin-coated polystyrene, a surface known to engage cells in receptor mediated adhesion, and untreated polystyrene, which elicit nonspecific adhesion mechanisms during early stages of cell attachment. The laser spallation technique effectively detached cells from polymer substrates and also distinguished relative cell adhesion strengths to surfaces with known differences in cell binding affinities. Scanning electron micrographs determined that cell detachment resulting from laser spallation left a cleaner surface than jet impingement, possibly suggesting a more complete detachment mechanism. Absolute values of adhesion strengths determined by laser spallation were significantly higher than those found using jet impingement, a previously reported hydrodynamic technique.
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Affiliation(s)
- Elizabeth Hagerman
- Department of Bioengineering, University of California, Los Angeles, California, USA
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Alvarez-Barreto JF, Shreve MC, Deangelis PL, Sikavitsas VI. Preparation of a Functionally Flexible, Three-Dimensional, Biomimetic Poly(L-Lactic Acid) Scaffold with Improved Cell Adhesion. ACTA ACUST UNITED AC 2007; 13:1205-17. [PMID: 17518730 DOI: 10.1089/ten.2006.0330] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Poly(L-lactic acid) (PLLA) is widely used in tissue-engineering applications because of its degradation characteristics and mechanical properties, but it possesses an inert nature, affecting cell-matrix interactions. It is desirable to modify the surface of PLLA to create biomimetic scaffolds that will enhance tissue regeneration. We prepared a functionally flexible, biomimetic scaffold by derivatizing the surface of PLLA foams into primary amines, activated pyridylthiols, or sulfhydryl groups, allowing a wide variety of modifications. Poly(L-lysine) (polyK) was physically entrapped uniformly throughout the scaffold surface and in a controllable fashion by soaking the foams in an acetone-water mixture and later in a polyK solution in dimethylsulfoxide. Arginine-glycine-aspartic acid-cysteine (RGDC) adhesion peptide was linked to the polyK via creating disulfide bonds introduced through the use of the linker N-succinimidyl-3-(2-pyridylthiol)-propionate. Presence of RGDC on the surface of PLLA 2-dimensional (2-D) disks and 3-D scaffolds increased cell surface area and the number of adherent mesenchymal stem cells. We have proposed a methodology for creating biomimetic scaffolds that is easy to execute, flexible, and nondestructive.
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Affiliation(s)
- Jose F Alvarez-Barreto
- School of Chemical, Biological and Materials Engineering, Bioengineering Center, University of Oklahoma, Norman, Oklahoma 73019, USA
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