1
|
Wozniak W, Sechet E, Kwon YJ, Aulner N, Navarro L, Sperandio B. Identification of human host factors required for beta-defensin-2 expression in intestinal epithelial cells upon a bacterial challenge. Sci Rep 2024; 14:15442. [PMID: 38965312 PMCID: PMC11224401 DOI: 10.1038/s41598-024-66568-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 07/01/2024] [Indexed: 07/06/2024] Open
Abstract
The human intestinal tract is colonized with microorganisms, which present a diverse array of immunological challenges. A number of antimicrobial mechanisms have evolved to cope with these challenges. A key defense mechanism is the expression of inducible antimicrobial peptides (AMPs), such as beta-defensins, which rapidly inactivate microorganisms. We currently have a limited knowledge of mechanisms regulating the inducible expression of AMP genes, especially factors from the host required in these regulatory mechanisms. To identify the host factors required for expression of the beta-defensin-2 gene (HBD2) in intestinal epithelial cells upon a bacterial challenge, we performed a RNAi screen using a siRNA library spanning the whole human genome. The screening was performed in duplicate to select the strongest 79 and 110 hit genes whose silencing promoted or inhibited HBD2 expression, respectively. A set of 57 hits selected among the two groups of genes was subjected to a counter-screening and a subset was subsequently validated for its impact onto HBD2 expression. Among the 57 confirmed hits, we brought out the TLR5-MYD88 signaling pathway, but above all new signaling proteins, epigenetic regulators and transcription factors so far unrevealed in the HBD2 regulatory circuits, like the GATA6 transcription factor involved in inflammatory bowel diseases. This study represents a significant step toward unveiling the key molecular requirements to promote AMP expression in human intestinal epithelial cells, and revealing new potential targets for the development of an innovative therapeutic strategy aiming at stimulating the host AMP expression, at the era of antimicrobial resistance.
Collapse
Grants
- This study received fundings from (i) the French Government “Investissement d’Avenir” program, Labex IBEID, with the reference ANR-10-LABX-62-IBEID, (ii) the French Alliance pour les Sciences de la Vie et de la Santé (AVIESAN), ITMO I3M, (iii) the PSL University, through the PSL pré-maturation program, AMPlify project, with the reference C22-78/2022-425, and (iv) the European Union, through the European Innovation Council Pathfinder Open program, MaxImmun project, with the reference 101129622.
- Weronika Wozniak received a Ph.D. funding support from PSL University under the program “Investissement d’Avenir” launched by the French Government and implemented by ANR with the reference ANR-10-IDEX-0001-02 PSL
Collapse
Affiliation(s)
- Weronika Wozniak
- Institut de Biologie de l'École Normale Supérieure (IBENS), Centre National de la Recherche Scientifique (CNRS) UMR8197, Institut National de la Santé et de la Recherche Médicale (INSERM) U1024, Université PSL, Paris, France
| | | | - Yong-Jun Kwon
- Institut Pasteur Korea, Seoul, South Korea
- Luxembourg Institute of Health, Dudelange, Luxembourg
| | | | - Lionel Navarro
- Institut de Biologie de l'École Normale Supérieure (IBENS), Centre National de la Recherche Scientifique (CNRS) UMR8197, Institut National de la Santé et de la Recherche Médicale (INSERM) U1024, Université PSL, Paris, France
| | - Brice Sperandio
- Institut de Biologie de l'École Normale Supérieure (IBENS), Centre National de la Recherche Scientifique (CNRS) UMR8197, Institut National de la Santé et de la Recherche Médicale (INSERM) U1024, Université PSL, Paris, France.
| |
Collapse
|
2
|
Yang L, Cheng T, Shao J. Perspective on receptor-associated immune response to Candida albicans single and mixed infections: Implications for therapeutics in oropharyngeal candidiasis. Med Mycol 2023; 61:myad077. [PMID: 37533203 DOI: 10.1093/mmy/myad077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/11/2023] [Accepted: 07/25/2023] [Indexed: 08/04/2023] Open
Abstract
Oropharyngeal candidiasis (OPC), commonly known as 'thrush', is an oral infection that usually dismantles oral mucosal integrity and malfunctions local innate and adaptive immunities in compromised individuals. The major pathogen responsible for the occurrence and progression of OPC is the dimorphic opportunistic commensal Candida albicans. However, the incidence induced by non-albicans Candida species including C. glabrata, C. tropicalis, C. dubliniensis, C. parapsilosis, and C. krusei are increasing in company with several oral bacteria, such as Streptococcus mutans, S. gordonii, S. epidermidis, and S. aureus. In this review, the microbiological and infection features of C. albicans and its co-contributors in the pathogenesis of OPC are outlined. Since the invasion and concomitant immune response lie firstly on the recognition of oral pathogens through diverse cellular surface receptors, we subsequently emphasize the roles of epidermal growth factor receptor, ephrin-type receptor 2, human epidermal growth factor receptor 2, and aryl hydrocarbon receptor located on oral epithelial cells to delineate the underlying mechanism by which host immune recognition to oral pathogens is mediated. Based on these observations, the therapeutic approaches to OPC comprising conventional and non-conventional antifungal agents, fungal vaccines, cytokine and antibody therapies, and antimicrobial peptide therapy are finally overviewed. In the face of newly emerging life-threatening microbes (C. auris and SARS-CoV-2), risks (biofilm formation and interconnected translocation among diverse organs), and complicated clinical settings (HIV and oropharyngeal cancer), the research on OPC is still a challenging task.
Collapse
Affiliation(s)
- Liu Yang
- Laboratory of Anti-infection and Immunity, College of Integrated Chinese and Western Medicine (College of Life Science), Anhui University of Chinese Medicine, Zhijing Building, 350 Longzihu Road, Xinzhan District, Hefei 230012, P. R. China
| | - Ting Cheng
- Laboratory of Anti-infection and Immunity, College of Integrated Chinese and Western Medicine (College of Life Science), Anhui University of Chinese Medicine, Zhijing Building, 350 Longzihu Road, Xinzhan District, Hefei 230012, P. R. China
| | - Jing Shao
- Laboratory of Anti-infection and Immunity, College of Integrated Chinese and Western Medicine (College of Life Science), Anhui University of Chinese Medicine, Zhijing Building, 350 Longzihu Road, Xinzhan District, Hefei 230012, P. R. China
- Institute of Integrated Traditional Chinese and Western Medicine, Anhui Academy of Chinese Medicine, Zhijing Building, 350 Longzihu Road, Xinzhan District, Hefei 230012, P. R. China
| |
Collapse
|
3
|
Nguyen AT, Kim M, Kim YE, Kim H, Lee S, Lee Y, Kim KY. MSF Enhances Human Antimicrobial Peptide β-Defensin (HBD2 and HBD3) Expression and Attenuates Inflammation via the NF- κB and p38 Signaling Pathways. Molecules 2023; 28:molecules28062744. [PMID: 36985716 PMCID: PMC10058637 DOI: 10.3390/molecules28062744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 03/30/2023] Open
Abstract
Both defensin and inflammation are part of the human innate immune system that responds rapidly to pathogens. The combination of defensins with pro- or anti-inflammatory effects can be a potential research direction for the treatment of infection by pathogens. This study aimed to identify whether MSF (Miracle Synergy material made using Filipendula glaberrima), a probiotic lysate of Filipendula glaberrima extracts fermented with Lactiplantibacillus plantarum K8, activates the expression of human β-defensin (HBD2 and HBD3) to protect the host against pathogens and inhibit inflammation caused by S. aureus, in vitro with Western blot analysis, qRT-PCR and in vivo studies with a mouse model were used to evaluate the effects of MSF. The MSF treatment induced HBD2 and HBD3 expression via the p38 and NF-κB pathways. Furthermore, MSF treatment significantly reduced the expression of pro-inflammatory cytokines (TNF-α, IL-1β, IL-6, and IL-8), also through p38 and NF-κB in S. aureus-induced inflammatory condition. MSF treatment remarkably reduced erythema in mice ears caused by the injection of S. aureus, while K8 lysate treatment did not initiate a strong recovery. Taken together, MSF induced the expression of HBD2 and HDB3 and activated anti-inflammatory activity more than the probiotic lysates of L. plantarum K8. These findings show that MSF is a potential defensin inducer and anti-inflammatory agent.
Collapse
Affiliation(s)
- Anh-Thu Nguyen
- Department of Genetics and Biotechnology, Kyung Hee University, Youngin 1732, Republic of Korea
| | - Minho Kim
- Department of Genetics and Biotechnology, Kyung Hee University, Youngin 1732, Republic of Korea
| | - Ye-Eun Kim
- Department of Genetics and Biotechnology, Kyung Hee University, Youngin 1732, Republic of Korea
| | - Hangeun Kim
- Research and Development Center, Skin Biotechnology Center Co., Ltd., Yongin 17104, Republic of Korea
| | - Sanghyun Lee
- Department of Plant Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Yunji Lee
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, Eumseong 27709, Republic of Korea
| | - Ki-Young Kim
- Department of Genetics and Biotechnology, Kyung Hee University, Youngin 1732, Republic of Korea
| |
Collapse
|
4
|
Morio KA, Sternowski RH, Brogden KA. Induction of Endogenous Antimicrobial Peptides to Prevent or Treat Oral Infection and Inflammation. Antibiotics (Basel) 2023; 12:antibiotics12020361. [PMID: 36830272 PMCID: PMC9952314 DOI: 10.3390/antibiotics12020361] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/03/2023] [Accepted: 02/05/2023] [Indexed: 02/11/2023] Open
Abstract
Antibiotics are often used to treat oral infections. Unfortunately, excessive antibiotic use can adversely alter oral microbiomes and promote the development of antibiotic-resistant microorganisms, which can be difficult to treat. An alternate approach could be to induce the local transcription and expression of endogenous oral antimicrobial peptides (AMPs). To assess the feasibility and benefits of this approach, we conducted literature searches to identify (i) the AMPs expressed in the oral cavity; (ii) the methods used to induce endogenous AMP expression; and (iii) the roles that expressed AMPs may have in regulating oral inflammation, immunity, healing, and pain. Search results identified human neutrophil peptides (HNP), human beta defensins (HBD), and cathelicidin AMP (CAMP) gene product LL-37 as prominent AMPs expressed by oral cells and tissues. HNP, HBD, and LL-37 expression can be induced by micronutrients (trace elements, elements, and vitamins), nutrients, macronutrients (mono-, di-, and polysaccharides, amino acids, pyropeptides, proteins, and fatty acids), proinflammatory agonists, thyroid hormones, and exposure to ultraviolet (UV) irradiation, red light, or near infrared radiation (NIR). Localized AMP expression can help reduce infection, inflammation, and pain and help oral tissues heal. The use of a specific inducer depends upon the overall objective. Inducing the expression of AMPs through beneficial foods would be suitable for long-term health protection. Additionally, the specialized metabolites or concentrated extracts that are utilized as dosage forms would maintain the oral and intestinal microbiome composition and control oral and intestinal infections. Inducing AMP expression using irradiation methodologies would be applicable to a specific oral treatment area in addition to controlling local infections while regulating inflammatory and healing processes.
Collapse
Affiliation(s)
| | | | - Kim A. Brogden
- College of Dentistry, The University of Iowa, Iowa City, IA 52242, USA
- Correspondence:
| |
Collapse
|
5
|
Wang L, Wei X, Duan C, Yang J, Xiao S, Liu H, Sun J. Bone marrow mesenchymal stem cell sheets with high expression of hBD3 and CTGF promote periodontal regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2022; 133:112657. [PMID: 35034825 DOI: 10.1016/j.msec.2022.112657] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 12/12/2021] [Accepted: 01/06/2022] [Indexed: 12/31/2022]
Abstract
The multi-bacterial environment of the oral cavity makes it hard for periodontal regeneration. As a class of antimicrobial peptide, beta defensin has been found to show broad-spectrum antibacterial ability. In addition, connective tissue growth factor (CTGF) is demonstrated to play a great role in multi-physiological events such as angiogenesis, wound healing and, more importantly, fibrogenesis. In this study, human β defensin 3 (hBD3) and CTGF were co-transfected into bone marrow derived mesenchymal stem cells (BMSCs) for preparing cell sheets. The transfection efficiency was detected through fluorescence of eGFP and western blot assay. Our results showed that the hBD3 and CTGF proteins were highly and stably expressed in the BMSCs after transfection. The results of RT-PCR and induced differentiation indicated that hBD3 promoted osteogenic differentiation of BMSCs, while CTGF significantly increased fibrogenic differentiation even in the presence of hBD3. The BMSCs acquired stronger capacity in terms of promoting M2 polarization of RAW 264.7 macrophages fulfilled by the transfection and secretion of hBD3 and CTGF. To further evaluate the periodontal remodeling performance of cell sheets, a coralline hydroxyapatite (CHA)-chitosan based hydrogel-human tooth system was designed to simulate the natural periodontal environment. The results showed that dense extracellular matrix, oriented fiber arrangement, and abundant collagen deposition appeared in the area of BMSCs sheets after subcutaneous transplantation. Altogether, our data showed that the lentivirus transfected BMSCs sheets had a promising application prospect for periodontal repair.
Collapse
Affiliation(s)
- Li Wang
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, PR China
| | - Xinbo Wei
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, PR China
| | - Cuimi Duan
- Tissue Engineering Research Center, Beijing Institute of Basic Medical Sciences, PR China
| | - Jinjin Yang
- Department of Stomatology, The Fifth Medical Center, Chinese PLA General Hospital, Xisihuan Middle Road 100, Fengtai District, Beijing 100036, PR China
| | - Shengzhao Xiao
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, PR China
| | - Haifeng Liu
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, PR China.
| | - Jie Sun
- Department of Stomatology, The Fifth Medical Center, Chinese PLA General Hospital, Xisihuan Middle Road 100, Fengtai District, Beijing 100036, PR China.
| |
Collapse
|
6
|
Noda-Nicolau NM, Silva MDC, Bento GFC, Ferreira JSB, Novak J, Morales JAP, Tronco JA, Bolpetti AN, Pinto GVS, Polettini J, Marconi C, da Silva MG. Cervicovaginal levels of human beta defensins during bacterial vaginosis. PLoS One 2021; 16:e0260753. [PMID: 34855866 PMCID: PMC8639056 DOI: 10.1371/journal.pone.0260753] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 11/16/2021] [Indexed: 12/28/2022] Open
Abstract
Aims To compare the cervicovaginal levels of human beta defensin (hBD)-1, 2 and 3 of women according to the status of Nugent-defined bacterial vaginosis (BV). Methods A total of 634 women of reproductive age were included in the study. Participants were equally distributed in two groups: according to the classification of vaginal smears according to Nugent criteria in normal (scores 0 to 3) and BV (scores ≥7). Cervicovaginal fluid samples were used for measurements of hBDs1, 2 and 3 levels by enzyme-linked immunosorbent assay (ELISA). Levels of each hBD were compared between the two study groups using Mann-Whitney test, with p-value <0.05 considered as significant. Odds ratio (OR) and 95% confidence interval (95% CI) were calculated for sociodemographic variables and hBD1-3 levels associated with BV a multivariable analysis. Correlation between Nugent score and measured levels of hBDs1-3 were calculated using Spearman’s test. Results Cervicovaginal fluids from women with BV showed lower levels of hBD-1 [median 2,400.00 pg/mL (0–27,800.00); p<0.0001], hBD-2 [5,600.00 pg/mL (0–45,800.00); p<0.0001] and hBD-3 [1,600.00 pg/mL (0–81,700.00); p = 0.012] when compared to optimal microbiota [hBD-1: [median 3,400.00 pg/mL (0–35,600.00), hBD-2: 12,300.00 pg/mL (0–95,300.00) and hBD-3: 3,000.00 pg/mL (0–64,300.00), respectively]. Multivariable analysis showed that lower levels of hBD-1 (OR: 2.05; 95% CI: 1.46–2.87), hBD-2 (OR: 1.85; 95% CI: 1.32–2.60) and hBD-3 (OR: 1.90; 95% CI: 1.37–2.64) were independently associated BV. Significant negative correlations were observed between Nugent scores and cervicovaginal levels of hBD-1 (Spearman’s rho = -0.2118; p = 0.0001) and hBD-2 (*Spearman’s rho = -0.2117; p = 0.0001). Conclusions Bacterial vaginosis is associated with lower cervicovaginal levels of hBDs1-3 in reproductive-aged women.
Collapse
Affiliation(s)
| | - Mariana de Castro Silva
- Department of Pathology, Botucatu Medical School, São Paulo State University (UNESP), São Paulo, Brazil
| | | | | | - Juliano Novak
- Department of Pathology, Botucatu Medical School, São Paulo State University (UNESP), São Paulo, Brazil
| | | | - Júlia Abbade Tronco
- Department of Pathology, Botucatu Medical School, São Paulo State University (UNESP), São Paulo, Brazil
| | - Aline Nascimento Bolpetti
- Department of Pathology, Botucatu Medical School, São Paulo State University (UNESP), São Paulo, Brazil
| | - Gabriel Vitor Silva Pinto
- Department of Pathology, Botucatu Medical School, São Paulo State University (UNESP), São Paulo, Brazil
| | - Jossimara Polettini
- Graduate Program in Biomedical Sciences, Medical School, Universidade Federal da Fronteira Sul (UFFS), Passo Fundo, RS, Brazil
| | - Camila Marconi
- Department of Pathology, Botucatu Medical School, São Paulo State University (UNESP), São Paulo, Brazil
- Department of Basic Pathology, Setor de Ciências Biológicas, Universidade Federal do Paraná (UFPR), Curitiba, Brazil
| | - Márcia Guimarães da Silva
- Department of Pathology, Botucatu Medical School, São Paulo State University (UNESP), São Paulo, Brazil
- * E-mail:
| |
Collapse
|
7
|
Cieślik M, Bagińska N, Górski A, Jończyk-Matysiak E. Human β-Defensin 2 and Its Postulated Role in Modulation of the Immune Response. Cells 2021; 10:cells10112991. [PMID: 34831214 PMCID: PMC8616480 DOI: 10.3390/cells10112991] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/28/2021] [Accepted: 10/30/2021] [Indexed: 12/17/2022] Open
Abstract
Studies described so far suggest that human β-defensin 2 is an important protein of innate immune response which provides protection for the human organism against invading pathogens of bacterial, viral, fungal, as well as parasitical origin. Its pivotal role in enhancing immunity was proved in infants. It may also be considered a marker of inflammation. Its therapeutic administration has been suggested for maintenance of the balance of systemic homeostasis based on the appropriate composition of the microbiota. It has been suggested that it may be an important therapeutic tool for modulating the response of the immune system in many inflammatory diseases, offering new treatment modalities. For this reason, its properties and role in the human body discussed in this review should be studied in more detail.
Collapse
Affiliation(s)
- Martyna Cieślik
- Bacteriophage Laboratory, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland; (M.C.); (N.B.); (E.J.-M.)
| | - Natalia Bagińska
- Bacteriophage Laboratory, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland; (M.C.); (N.B.); (E.J.-M.)
| | - Andrzej Górski
- Bacteriophage Laboratory, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland; (M.C.); (N.B.); (E.J.-M.)
- Phage Therapy Unit, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland
- Infant Jesus Hospital, The Medical University of Warsaw, 02-006 Warsaw, Poland
- Correspondence:
| | - Ewa Jończyk-Matysiak
- Bacteriophage Laboratory, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland; (M.C.); (N.B.); (E.J.-M.)
| |
Collapse
|
8
|
Ghosh S, Pramanik S. Structural diversity, functional aspects and future therapeutic applications of human gut microbiome. Arch Microbiol 2021; 203:5281-5308. [PMID: 34405262 PMCID: PMC8370661 DOI: 10.1007/s00203-021-02516-y] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 07/29/2021] [Accepted: 08/06/2021] [Indexed: 02/06/2023]
Abstract
The research on human gut microbiome, regarded as the black box of the human body, is still at the stage of infancy as the functional properties of the complex gut microbiome have not yet been understood. Ongoing metagenomic studies have deciphered that the predominant microbial communities belong to eubacterial phyla Firmicutes, Bacteroidetes, Proteobacteria, Fusobacteria, Cyanobacteria, Verrucomicrobia and archaebacterial phylum Euryarchaeota. The indigenous commensal microbial flora prevents opportunistic pathogenic infection and play undeniable roles in digestion, metabolite and signaling molecule production and controlling host's cellular health, immunity and neuropsychiatric behavior. Besides maintaining intestinal health via short-chain fatty acid (SCFA) production, gut microbes also aid in neuro-immuno-endocrine modulatory molecule production, immune cell differentiation and glucose and lipid metabolism. Interdependence of diet and intestinal microbial diversity suggests the effectiveness of pre- and pro-biotics in maintenance of gut and systemic health. Several companies worldwide have started potentially exploiting the microbial contribution to human health and have translated their use in disease management and therapeutic applications. The present review discusses the vast diversity of microorganisms playing intricate roles in human metabolism. The contribution of the intestinal microbiota to regulate systemic activities including gut-brain-immunity crosstalk has been focused. To the best of our knowledge, this review is the first of its kind to collate and discuss the companies worldwide translating the multi-therapeutic potential of human intestinal microbiota, based on the multi-omics studies, i.e. metagenomics and metabolomics, as ready solutions for several metabolic and systemic disorders.
Collapse
Affiliation(s)
- Soma Ghosh
- Kolkata Zonal Center, CSIR-National Environmental Engineering Research Institute, i-8 Sector-C, East Kolkata Township, Kolkata, 700107, India.
| | - Sreemanta Pramanik
- Kolkata Zonal Center, CSIR-National Environmental Engineering Research Institute, i-8 Sector-C, East Kolkata Township, Kolkata, 700107, India
| |
Collapse
|
9
|
Dias AA, Silva CADME, da Silva CO, Linhares NRC, Santos JPS, Vivarini ADC, Marques MÂDM, Rosa PS, Lopes UG, Berrêdo-Pinho M, Pessolani MCV. TLR-9 Plays a Role in Mycobacterium leprae-Induced Innate Immune Activation of A549 Alveolar Epithelial Cells. Front Immunol 2021; 12:657449. [PMID: 34456901 PMCID: PMC8397448 DOI: 10.3389/fimmu.2021.657449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 07/27/2021] [Indexed: 12/18/2022] Open
Abstract
The respiratory tract is considered the main port of entry of Mycobacterium leprae, the causative agent of leprosy. However, the great majority of individuals exposed to the leprosy bacillus will never manifest the disease due to their capacity to develop protective immunity. Besides acting as a physical barrier, airway epithelium cells are recognized as key players by initiating a local innate immune response that orchestrates subsequent adaptive immunity to control airborne infections. However, to date, studies exploring the interaction of M. leprae with the respiratory epithelium have been scarce. In this work, the capacity of M. leprae to immune activate human alveolar epithelial cells was investigated, demonstrating that M. leprae-infected A549 cells secrete significantly increased IL-8 that is dependent on NF-κB activation. M. leprae was also able to induce IL-8 production in human primary nasal epithelial cells. M. leprae-treated A549 cells also showed higher expression levels of human β-defensin-2 (hβD-2), MCP-1, MHC-II and the co-stimulatory molecule CD80. Furthermore, the TLR-9 antagonist inhibited both the secretion of IL-8 and NF-κB activation in response to M. leprae, indicating that bacterial DNA sensing by this Toll-like receptor constitutes an important innate immune pathway activated by the pathogen. Finally, evidence is presented suggesting that extracellular DNA molecules anchored to Hlp, a histone-like protein present on the M. leprae surface, constitute major TLR-9 ligands triggering this pathway. The ability of M. leprae to immune activate respiratory epithelial cells herein demonstrated may represent a very early event during infection that could possibly be essential to the generation of a protective response.
Collapse
Affiliation(s)
- André Alves Dias
- Laboratory of Cellular Microbiology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | | | - Camila Oliveira da Silva
- Laboratory of Cellular Microbiology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | | | - João Pedro Sousa Santos
- Laboratory of Cellular Microbiology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Aislan de Carvalho Vivarini
- Laboratory of Molecular Parasitology, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Maria Ângela de Mello Marques
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University (CSU), Fort Collins, CO, United States
| | | | - Ulisses Gazos Lopes
- Laboratory of Molecular Parasitology, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Márcia Berrêdo-Pinho
- Laboratory of Cellular Microbiology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | | |
Collapse
|
10
|
Fusco A, Savio V, Donniacuo M, Perfetto B, Donnarumma G. Antimicrobial Peptides Human Beta-Defensin-2 and -3 Protect the Gut During Candida albicans Infections Enhancing the Intestinal Barrier Integrity: In Vitro Study. Front Cell Infect Microbiol 2021; 11:666900. [PMID: 34178720 PMCID: PMC8223513 DOI: 10.3389/fcimb.2021.666900] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 05/17/2021] [Indexed: 12/24/2022] Open
Abstract
The intestinal mucosa is composed of a monolayer of epithelial cells, which is highly polarized and firmly united to each other thanks to the presence of proteins complexes, called Tight junctions (TJs). Alteration of the mucus layer and TJs causes an increase in intestinal permeability, which can lead to a microbial translocation and systemic disorders. Candida albicans, in addition to its role of commensal, is an opportunistic pathogen responsible for disseminated candidiasis, especially in immunocompromised subjects where the dysbiosis leads to damage of the intestinal mucosal barrier . In this work, we used a line of intestinal epithelial cells able to stably express the genes that encodes human beta defensin-2 (HBD-2) and -3 (HBD-3) to monitor the invasion of C. albicans in vitro. Defensins are a group of antimicrobial peptides (AMPs) found in different living organisms, and are involved in the first line of defense in the innate immune response against pathogens. The results obtained show that the presence of antimicrobial peptides improves the expression of TJs and increases the Trans Epithelial Electrical Resistence value. In addition, the invasive ability of C. albicans in transfected cells is significantly reduced, as well as the expression levels of genes involved in the apoptotic pathway. Through the study of interaction between antimicrobial peptides and microbiota we will be able in the future to better understand the mechanisms by which they exert the host defense function against intestinal pathogens.
Collapse
Affiliation(s)
- Alessandra Fusco
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Vittoria Savio
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Maria Donniacuo
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Brunella Perfetto
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Giovanna Donnarumma
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| |
Collapse
|
11
|
Woodby B, Pambianchi E, Ferrara F, Therrien JP, Pecorelli A, Messano N, Lila MA, Valacchi G. Cutaneous antimicrobial peptides: New "actors" in pollution related inflammatory conditions. Redox Biol 2021; 41:101952. [PMID: 33839421 PMCID: PMC8059092 DOI: 10.1016/j.redox.2021.101952] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/01/2021] [Accepted: 03/16/2021] [Indexed: 01/08/2023] Open
Abstract
Ozone (O3) exposure has been reported to contribute to various cutaneous inflammatory conditions, such as eczema, psoriasis, rush etc. via a redox-inflammatory pathway. O3 is too reactive to penetrate cutaneous tissue; it interacts with lipids present in the outermost layer of skin, resulting in formation of oxidized molecules and hydrogen peroxide (H2O2). Interestingly, several inflammatory skin pathologies demonstrate altered levels of antimicrobial peptides (AMPs). These small, cationic peptides are found in various cells, including keratinocytes, eccrine gland cells, and seboctyes. Classically, AMPs function as antimicrobial agents. Recent studies indicate that AMPs also play roles in inflammation, angiogenesis, and wound healing. Since altered levels of AMPs have been detected in pollution-associated skin pathologies, we hypothesized that exposure to O3 could affect the levels of AMPs in the skin. We examined levels of AMPs using qRT-PCR, Western blotting, and immunofluorescence in vitro (human keratinocytes), ex vivo (human skin explants), and in vivo (human volunteer subjects exposed to O3) and observed increased levels of all the measured AMPs upon O3 exposure. In addition, in vitro studies have confirmed the redox regulation of AMPs in keratinocytes. This novel finding suggests that targeting AMPs could be a possible defensive strategy to combat pollution-associated skin conditions. AMPs (hBDs1-3, CAMP) increase in O3 exposed human skin by a redox mechanism. Transcriptional upregulation of AMPs in response to O3 exposure is due to an altered redox status. Pollution increase AMPs could be the connection between pollution exposure and the development/exacerbation of inflammatory skin conditions.
Collapse
Affiliation(s)
- Brittany Woodby
- Plants for Human Health Institute Animal Science Dept, NC Research Campus Kannapolis, NC, 28081, USA
| | - Erika Pambianchi
- Plants for Human Health Institute Animal Science Dept, NC Research Campus Kannapolis, NC, 28081, USA
| | - Francesca Ferrara
- Plants for Human Health Institute Animal Science Dept, NC Research Campus Kannapolis, NC, 28081, USA; Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy
| | | | - Alessandra Pecorelli
- Plants for Human Health Institute Animal Science Dept, NC Research Campus Kannapolis, NC, 28081, USA
| | - Nicolo' Messano
- Plants for Human Health Institute Animal Science Dept, NC Research Campus Kannapolis, NC, 28081, USA
| | - Mary Ann Lila
- Plants for Human Health Institute Animal Science Dept, NC Research Campus Kannapolis, NC, 28081, USA
| | - Giuseppe Valacchi
- Plants for Human Health Institute Animal Science Dept, NC Research Campus Kannapolis, NC, 28081, USA; Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy; JP Therrien Consulting, LLC, USA; Kyung Hee University, Department of Food and Nutrition, South Korea.
| |
Collapse
|
12
|
Tian M, Chen J, Wu Z, Song H, Yang F, Cui C, Chen F, Zhang S, Guan W. Fat Encapsulation Reduces Diarrhea in Piglets Partially by Repairing the Intestinal Barrier and Improving Fatty Acid Transport. Animals (Basel) 2020; 11:ani11010028. [PMID: 33375218 PMCID: PMC7824132 DOI: 10.3390/ani11010028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/18/2020] [Accepted: 12/21/2020] [Indexed: 12/17/2022] Open
Abstract
(1) Background: Nutritional strategies to enhance gut function and reduce the piglet diarrhea rate are critical to increase the growth performance of piglets. The purpose of this study was to investigate whether dietary fat types and/or fat microencapsulation techniques are involved in regulating the fatty acid transport system and the mechanical and immunological barriers of the small intestine. (2) Methods: Three hundred twenty-four weaning piglets were randomly divided into three groups fed a soybean oil diet (SBO, control group, 6.0% soybean oil), palm oil diet (PO, 6.0% palm oil), or encapsulated palm oil diet (EPO, 7.5% encapsulated palm oil). (3) Results: A significantly lower mRNA expression of the claudin was observed in the duodenum and jejunum of the PO group than in the SBO group (p < 0.05). However, the mRNA expression and protein abundance of claudin and ZO-1 in the jejunum of the EPO group were higher (p < 0.05) than in the PO group. Porcine β-defensin (pBD) secretion was not significantly different between the SBO and PO groups (p > 0.05), while the pBD-2 levels were significantly different (p < 0.05). Compared with the PO group, the EPO group exhibited a significantly increased secretion of pBD-2 and pBD-129 in the small intestine (p < 0.05) and pBD-1 in the jejunum and ileum (p < 0.05). The protein abundances of apolipoprotein AIV (Apo AIV) and intestinal fatty acid binding protein (I-FABP) were significantly lower in the PO group than in the SBO group (p < 0.05). Simultaneously, the protein abundances of fatty acid transport protein 4 (FATP4), fatty acid translocase (CD36), and I-FABP were higher in the EPO group than in the PO group. Furthermore, the low digestibility of palm oil (PO group) might negatively regulate intestinal tight junctions, fatty acid transporters, lipoproteins, and β-defensin through the activation of the AMPK/mTORC1 and AMPK/Sirt1/NF-κB pathways. (4) Conclusions: In summary, microencapsulation techniques might alleviate the negative effects of palm oil and help to improve the intestinal fatty acid transport system and barrier function.
Collapse
Affiliation(s)
- Min Tian
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.T.); (J.C.); (Z.W.); (H.S.); (F.Y.); (C.C.); (F.C.)
| | - Jiaming Chen
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.T.); (J.C.); (Z.W.); (H.S.); (F.Y.); (C.C.); (F.C.)
| | - Zhihui Wu
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.T.); (J.C.); (Z.W.); (H.S.); (F.Y.); (C.C.); (F.C.)
| | - Hanqing Song
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.T.); (J.C.); (Z.W.); (H.S.); (F.Y.); (C.C.); (F.C.)
| | - Fei Yang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.T.); (J.C.); (Z.W.); (H.S.); (F.Y.); (C.C.); (F.C.)
| | - Chang Cui
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.T.); (J.C.); (Z.W.); (H.S.); (F.Y.); (C.C.); (F.C.)
| | - Fang Chen
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.T.); (J.C.); (Z.W.); (H.S.); (F.Y.); (C.C.); (F.C.)
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Shihai Zhang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.T.); (J.C.); (Z.W.); (H.S.); (F.Y.); (C.C.); (F.C.)
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
- Correspondence: (S.Z.); (W.G.); Tel./Fax: +86-20-85284837 (S.Z.); +86-20-85284837 (W.G.)
| | - Wutai Guan
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.T.); (J.C.); (Z.W.); (H.S.); (F.Y.); (C.C.); (F.C.)
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
- Correspondence: (S.Z.); (W.G.); Tel./Fax: +86-20-85284837 (S.Z.); +86-20-85284837 (W.G.)
| |
Collapse
|
13
|
Kotani H, Koshizuka T, Matsubara K, Nishiyama K, Sugiyama T, Suzutani T. Relationship Between Human β-Defensin 2 and the Vaginal Environment. Jpn J Infect Dis 2020; 73:214-220. [PMID: 31875602 DOI: 10.7883/yoken.jjid.2019.190] [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: 11/17/2022]
Abstract
As one of the main antimicrobial peptides, human β-defensin 2 (HBD2) plays multiple roles in the lower genital tract. Based on the Nugent score as a diagnostic criterion for bacterial vaginosis, we sought to clarify the correlations among the Nugent score and interleukin-6 (IL-6) and HBD2 levels in vaginal secretions in association with various types of infection. Ninety-eight women were recruited for this study. Levels of HBD2 and IL-6 in vaginal wash were measured by enzyme-linked immunosorbent assays. According to the Nugent method, the number of Lactobacillus morphotypes per field of view was well correlated with the HBD2 level. The amount of HBD2 was also well correlated with the presence of Candida spp. (P < 0.01). In vitro experiments revealed that the expression of HBD2 from the human vaginal epithelial cell line, VK2/E6E7, was induced by the addition of heat-killed C. albicans (HKCA). The addition of HKCA induced expression of Dectin-1 mRNA. A luciferase assay for nuclear factor kappa-light-chain-enhancer of activated B cells (NFκB) responsive elements showed that HKCA activated NF-κB signaling. These results suggested that C. albicans induced the activation of Dectin-1 and (NF-κB) signaling, resulting in HBD2 expression. In conclusion, the expression of HBD2 positively correlated with the presence of Lactobacillus and Candida spp.
Collapse
Affiliation(s)
- Hideko Kotani
- Department of Obstetrics and Gynecology, Ehime University Graduate School of Medicine
| | - Tetsuo Koshizuka
- Department of Microbiology, Fukushima Medical University School of Medicine
| | - Keiichi Matsubara
- Department of Obstetrics and Gynecology, Ehime University Graduate School of Medicine
| | - Kyoko Nishiyama
- Department of Microbiology, Fukushima Medical University School of Medicine
| | - Takashi Sugiyama
- Department of Obstetrics and Gynecology, Ehime University Graduate School of Medicine
| | - Tatsuo Suzutani
- Department of Microbiology, Fukushima Medical University School of Medicine
| |
Collapse
|
14
|
Aytogan H. A case of cutaneous candidiasis of upper eyelid in association with facial paralysis. Indian J Ophthalmol 2020; 68:637-638. [PMID: 32174586 PMCID: PMC7210849 DOI: 10.4103/ijo.ijo_1381_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
|
15
|
Tang Z, Shi B, Sun W, Yin Y, Chen Q, Mohamed T, Lu C, Sun Z. Tryptophan promoted β-defensin-2 expressionviathe mTOR pathway and its metabolites: kynurenine banding to aryl hydrocarbon receptor in rat intestine. RSC Adv 2020; 10:3371-3379. [PMID: 35497743 PMCID: PMC9049194 DOI: 10.1039/c9ra10477a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 01/04/2020] [Indexed: 12/20/2022] Open
Abstract
In this study, we investigated the signalling pathways mediating tryptophan (Trp)-promoted β-defensin-2 (BD-2) expression in rat intestinal mucosa. Sprague Dawley rats were administered with l-Trp and treated with rapamycin (RAPA), 1-methyltryptophan (1-MT), or para-chlorophenyl-amine (PCPA) to inhibit mammalian target of rapamycin (mTOR), indoleamine-2,3-dioxygenase (IDO), or tryptophan hydroxylase (TPH), respectively. The mRNA and protein levels of BD-2 in the jejunal and ileal mucosa of rats increased with administration of l-Trp. Intraperitoneal injection of RAPA significantly decreased the mRNA level of BD-2 and the concentrations of p-mTORC1 and BD-2 in the jejunal and ileal mucosa of rats with administration of l-Trp (P < 0.05). Oral administration of 1-MT decreased the IDO activity and the mRNA and protein levels of BD-2, and increased the concentrations of tumour necrosis factor (TNF-α), interleukin (IL)-17, and IL-22 in the jejunal and ileal mucosa of rats with administration of l-Trp (P < 0.05). Intraperitoneal injection of PCPA decreased the TPH activity and increased the mRNA and protein levels of BD-2, but did not change the concentrations of TNF-α, IL-17, or IL-22 in the jejunal and ileal mucosa of rats with administration of l-Trp. The results indicate the Trp-promoted BD-2 expression in the jejunum and ileum via the mTOR pathway and its metabolites: kynurenine banding to aryl hydrocarbon receptor in rat intestine. In this study, we investigated the signalling pathways mediating tryptophan (Trp)-promoted β-defensin-2 (BD-2) expression in rat intestinal mucosa.![]()
Collapse
Affiliation(s)
- Zhiru Tang
- Laboratory for Bio-feed and Molecular Nutrition
- College of Animal Science and Technology
- Southwest University
- Chongqing 400715
- China
| | - Baoshi Shi
- Laboratory for Bio-feed and Molecular Nutrition
- College of Animal Science and Technology
- Southwest University
- Chongqing 400715
- China
| | - Weizhong Sun
- Laboratory for Bio-feed and Molecular Nutrition
- College of Animal Science and Technology
- Southwest University
- Chongqing 400715
- China
| | - Yulong Yin
- Institute of Subtropical Agriculture
- The Chinese Academy of Sciences
- Changsha 410125
- P. R. China
| | - Qingju Chen
- Laboratory for Bio-feed and Molecular Nutrition
- College of Animal Science and Technology
- Southwest University
- Chongqing 400715
- China
| | - Taha Mohamed
- Laboratory for Bio-feed and Molecular Nutrition
- College of Animal Science and Technology
- Southwest University
- Chongqing 400715
- China
| | - Changwen Lu
- Laboratory for Bio-feed and Molecular Nutrition
- College of Animal Science and Technology
- Southwest University
- Chongqing 400715
- China
| | - Zhihong Sun
- Laboratory for Bio-feed and Molecular Nutrition
- College of Animal Science and Technology
- Southwest University
- Chongqing 400715
- China
| |
Collapse
|
16
|
Casaroto AR, da Silva RA, Salmeron S, Rezende MLRD, Dionísio TJ, Santos CFD, Pinke KH, Klingbeil MFG, Salomão PA, Lopes MMR, Lara VS. Candida albicans-Cell Interactions Activate Innate Immune Defense in Human Palate Epithelial Primary Cells via Nitric Oxide (NO) and β-Defensin 2 (hBD-2). Cells 2019; 8:cells8070707. [PMID: 31336838 PMCID: PMC6678605 DOI: 10.3390/cells8070707] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 06/28/2019] [Accepted: 07/05/2019] [Indexed: 01/29/2023] Open
Abstract
The presence of Candida albicans in the biofilm underlying the dental prosthesis is related to denture stomatitis (DS), an inflammatory reaction of the oral mucosa. The oral epithelium, a component of the innate immune response, has the ability to react to fungal invasion. In this study, we evaluated the in vitro effect of viable C. albicans on the apoptosis, nitric oxide (NO) production, and β-defensin 2 (hBD-2) expression and production of human palate epithelial cells (HPECs). We further determined whether or not these effects were correlated with fungal invasion of epithelial cells. Interaction between HPEC primary culture and C. albicans was obtained through either direct or indirect cell–cell contact with a supernatant from a hyphal fungus. We found that the hyphae supernatants were sufficient to induce slight HPEC apoptosis, which occurred prior to the activation of the specific mechanisms of epithelial defense. The epithelial defense responses were found to occur via NO and antimicrobial peptide hBD-2 production only during direct contact between C. albicans and HPECs and coincided with the fungus’s intraepithelial invasion. However, although the hBD-2 levels remained constant in the HPEC supernatants over time, the NO release and hBD-2 gene expression were reduced at a later time (10 h), indicating that the epithelial defense capacity against the fungal invasion was not maintained in later phases. This aspect of the immune response was associated with increased epithelial invasion and apoptosis maintenance.
Collapse
Affiliation(s)
- Ana Regina Casaroto
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil.
| | - Rafaela Alves da Silva
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Samira Salmeron
- Department of Prosthodontics and Periodontology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Maria Lúcia Rubo de Rezende
- Department of Prosthodontics and Periodontology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Thiago José Dionísio
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Carlos Ferreira Dos Santos
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Karen Henriette Pinke
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | | | - Priscila Aranda Salomão
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Marcelo Milanda Ribeiro Lopes
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Vanessa Soares Lara
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| |
Collapse
|
17
|
Pero R, Brancaccio M, Laneri S, Biasi MGD, Lombardo B, Scudiero O. A Novel View of Human Helicobacter pylori Infections: Interplay between Microbiota and Beta-Defensins. Biomolecules 2019; 9:biom9060237. [PMID: 31216758 PMCID: PMC6627275 DOI: 10.3390/biom9060237] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 06/11/2019] [Accepted: 06/13/2019] [Indexed: 02/07/2023] Open
Abstract
The gut microbiota is significantly involved in the preservation of the immune system of the host, protecting it against the pathogenic bacteria of the stomach. The correlation between gut microbiota and the host response supports human gastric homeostasis. Gut microbes may be shifted in Helicobacter pylori (Hp)-infected individuals to advance gastric inflammation and distinguished diseases. Particularly interesting is the establishment of cooperation between gut microbiota and antimicrobial peptides (AMPs) of the host in the gastrointestinal tract. AMPs have great importance in the innate immune reactions to Hp and participate in conservative co-evolution with an intricate microbiome. β-Defensins, a class of short, cationic, arginine-rich proteins belonging to the AMP group, are produced by epithelial and immunological cells. Their expression is enhanced during Hp infection. In this review, we discuss the impact of the gut microbiome on the host response, with particular regard to β-defensins in Hp-associated infections. In microbial infections, mostly in precancerous lesions induced by Hp infection, these modifications could lead to different outcomes.
Collapse
Affiliation(s)
- Raffaela Pero
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", 80131 Napoli, Italy.
- Task Force sugli Studi del Microbioma, Università degli Studi di Napoli "Federico II", 80131 Napoli, Italy.
| | - Mariarita Brancaccio
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, 80121 Napoli, Italy.
| | - Sonia Laneri
- Dipartimento di Farmacia, Università degli Studi di Napoli "Federico II", Via Montesano 49, 80131 Napoli, Italy.
| | | | - Barbara Lombardo
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", 80131 Napoli, Italy.
- CEINGE-Biotecnologie Avanzate Scarl, Via G. Salvatore 486, 80145 Napoli, Italy.
| | - Olga Scudiero
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", 80131 Napoli, Italy.
- Task Force sugli Studi del Microbioma, Università degli Studi di Napoli "Federico II", 80131 Napoli, Italy.
- CEINGE-Biotecnologie Avanzate Scarl, Via G. Salvatore 486, 80145 Napoli, Italy.
| |
Collapse
|
18
|
Cheng HY, Ning MX, Chen DK, Ma WT. Interactions Between the Gut Microbiota and the Host Innate Immune Response Against Pathogens. Front Immunol 2019; 10:607. [PMID: 30984184 PMCID: PMC6449424 DOI: 10.3389/fimmu.2019.00607] [Citation(s) in RCA: 126] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 03/07/2019] [Indexed: 12/12/2022] Open
Abstract
The mammalian intestine is colonized by over a trillion microbes that comprise the "gut microbiota," a microbial community which has co-evolved with the host to form a mutually beneficial relationship. Accumulating evidence indicates that the gut microbiota participates in immune system maturation and also plays a central role in host defense against pathogens. Here we review some of the mechanisms employed by the gut microbiota to boost the innate immune response against pathogens present on epithelial mucosal surfaces. Antimicrobial peptide secretion, inflammasome activation and induction of host IL-22, IL-17, and IL-10 production are the most commonly observed strategies employed by the gut microbiota for host anti-pathogen defense. Taken together, the body of evidence suggests that the host gut microbiota can elicit innate immunity against pathogens.
Collapse
Affiliation(s)
- Hong-Yu Cheng
- Veterinary Immunology Laboratory, College of Veterinary Medicine, Northwest Agriculture and Forestry University, Yangling, China
| | - Meng-Xia Ning
- Veterinary Immunology Laboratory, College of Veterinary Medicine, Northwest Agriculture and Forestry University, Yangling, China
| | - De-Kun Chen
- Veterinary Immunology Laboratory, College of Veterinary Medicine, Northwest Agriculture and Forestry University, Yangling, China
| | - Wen-Tao Ma
- Veterinary Immunology Laboratory, College of Veterinary Medicine, Northwest Agriculture and Forestry University, Yangling, China
| |
Collapse
|
19
|
Rahayu RP, Prasetyo RA, Purwanto DA, Kresnoadi U, Iskandar RPD, Rubianto M. The immunomodulatory effect of green tea ( Camellia sinensis) leaves extract on immunocompromised Wistar rats infected by Candida albicans. Vet World 2018; 11:765-770. [PMID: 30034167 PMCID: PMC6048092 DOI: 10.14202/vetworld.2018.765-770] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 05/02/2018] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND AND AIM The immunocompromised condition is considered a defect in the immune system. This condition tends to increase the risk of oral candidiasis, due to the inability of the immune system to eliminate the adhesion of Candida albicans and leads to systemic candidiasis with a mortality rate of 60%. Green tea (Camellia sinensis) contains potential antioxidant and immunomodulatory which acts as anticancer, antifungal, and antivirus agent. The aim of this study was to invent herbal-based medicine, which acts as an immunomodulator and antifungal agent to treat fungal infection in immunocompromised patients. MATERIALS AND METHODS Thirty-five immunocompromised Wistar rats induced with C. albicans were divided into 7 groups (n=5): Control group (C+); treated for 4 days with green tea extract 1.25% (GT 4), epigallocatechin gallate (EGCG) 1% (EGCG 4), EGC 1% (EGC 4); and treated for 7 days with green tea extract 1.25% (GT 7), EGCG 1% (EGCG 7), and EGC 1% (EGC 7). Tongue tissue was collected and analyzed with immunohistochemistry staining using monoclonal antibody; interleukin (IL)-17A, IL-8, and human beta-defensin 2 (HBD)-2. Data were analyzed using analysis of variance test and Tukey honest significant differences test. RESULTS The expression of IL-17A, IL-8, and HBD-2 was significantly increased (p=0.000) after green tea extract administration in 7 days, whereas in 7 days, the expression of IL-8, IL-17A, and HBD-2 after EGCG and EGC administration did not give a significant result (p>0.005). CONCLUSION Within the limits of this study, green tea extract has the ability as an immunomodulatory agent in an immunocompromised patient infected by C. albicans through expression augmentation of IL-8, IL-17A, and HBD-2 compared to EGCG and EGC.
Collapse
Affiliation(s)
- Retno P. Rahayu
- Department of Oral and Maxillofacial Pathology, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Remita A. Prasetyo
- Installation of Oral and Dental Health, Dr. Soetomo Hospital, Surabaya, Indonesia
| | - Djoko A. Purwanto
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Airlangga, Surabaya, Indonesia
| | - Utari Kresnoadi
- Department of Prosthodontics, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Regina P. D. Iskandar
- Student of Immunology, Postgraduate School, Universitas Airlangga, Surabaya, Indonesia
| | - Muhammad Rubianto
- Department of Periodontics, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| |
Collapse
|
20
|
Silva ON, Porto WF, Ribeiro SM, Batista I, Franco OL. Host-defense peptides and their potential use as biomarkers in human diseases. Drug Discov Today 2018; 23:1666-1671. [PMID: 29803935 DOI: 10.1016/j.drudis.2018.05.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 05/06/2018] [Accepted: 05/21/2018] [Indexed: 02/07/2023]
Abstract
Since the early 19th century, host-defense peptides (HDPs) have been known to play a crucial role in innate host defense. Subsequent work has demonstrated their role in adaptive immunity as well as their involvement in cancer and also a number of inflammatory and/or autoimmune diseases. In addition to these multiple functional activities, several studies have shown that HDP accumulation might be correlated with various human diseases and, therefore, could be used as a biomarkers for such. Thus, research has aimed to validate the clinical use of HDPs for diagnosis, prognosis, and further treatment. In this review, we outline the most recent findings related to the use of HDPs as biomarkers, their clinical and epidemiological value, and the techniques used to determine the levels of HDPs.
Collapse
Affiliation(s)
- Osmar N Silva
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil
| | - William F Porto
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil; Porto Reports, 70790-160, Brasília, DF, Brazil
| | - Suzana M Ribeiro
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil; Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal da Grande Dourados, Dourados-MS
| | - Ingrid Batista
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil
| | - Octavio Luiz Franco
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil; Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brasília, DF, Brazil; Departamento de Patologia Molecular, Universidade de Brasília, Brasília, DF, Brazil.
| |
Collapse
|
21
|
Cervicovaginal Levels of Human β-Defensin 1, 2, 3, and 4 of Reproductive-Aged Women With Chlamydia trachomatis Infection. J Low Genit Tract Dis 2018; 21:189-192. [PMID: 28430679 DOI: 10.1097/lgt.0000000000000315] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE This study included women attending primary health care units in Botucatu, São Paulo, Brazil, to assess the cervicovaginal levels of human β-defensin (hBD) 1, 2, 3, and 4 during Chlamydia trachomatis infection. PATIENTS AND METHODS Cervicovaginal samples were collected for Pap testing and assessing the presence of infection by C. trachomatis, human papillomavirus, Neisseria gonorrhoeae, and Trichomonas vaginalis. Vaginal smears were taken to evaluate local microbiota. Human β-defensin levels were determined using enzyme-linked immunosorbent assay in cervicovaginal fluid samples. Seventy-four women with normal vaginal microbiota and no evidence of infection were included in hBD quantification assays; 37 tested positive for C. trachomatis and 37 were negative. Statistical analysis was performed using Mann-Whitney U test. RESULTS Women positive for C. trachomatis had significantly lower cervicovaginal hBD-1, hBD-2, and hBD-3 compared with those who tested negative (hBD-1: 0 pg/mL [0-2.1] vs 1.6 pg/mL [0-2.4], p < .0001; hBD-2: 0 pg/mL [0-3.9] vs 0.61 pg/mL [0-8.9], p = .0097; and hBD-3: 0 pg/mL [0-4.3] vs 0.28 pg/mL [0-8.4], p = .0076). Human β-defensin 4 was not detected. CONCLUSIONS Lower levels of hBD-1, hBD-2, and hBD-3 in cervicovaginal fluid were detected in the presence of C. trachomatis infection.
Collapse
|
22
|
Expression of recombinant HBD3 protein that reduces Mycobacterial infection capacity. AMB Express 2018; 8:42. [PMID: 29556853 PMCID: PMC5861256 DOI: 10.1186/s13568-018-0573-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 03/12/2018] [Indexed: 01/21/2023] Open
Abstract
Bovine tuberculosis is a disease caused by Mycobacterium bovis (M. bovis) that leads to great economic losses in cattle production. The discovery of a reasonable bioagent to reduce M. bovis infection risk and environment contamination becomes significant and urgent. Previous study reported that human β-defensin-3 (HBD3) participated in Mycobacterial immunity and was recognized as a suitable candidate reagent. However, its minimal inhibitory concentration to M. bovis is not yet reported. In this study, we first purified HBD3 protein by recombinant-DNA technology and prokaryotic expression system. Subsequently, anti-bacterial tests were used to evaluate the basic bioactivity of the protein. Results revealed that recombinant HBD3 (rHBD3) protein inhibits Staphylococcus multiplication but not the host Escherichia coli. The growth curve of M. bovis showed that rHBD3 protein controls the proliferation of M. bovis in 20 μg/ml concentration. In addition, rHBD3 protein-incubated M. bovis exhibited reduced infectivity to alveolar epithelial cells and macrophages. In conclusion, the expression of rHBD3 protein is a potential ideal bio-regent for reducing M. bovis infection.
Collapse
|
23
|
Pachón-Ibáñez ME, Smani Y, Pachón J, Sánchez-Céspedes J. Perspectives for clinical use of engineered human host defense antimicrobial peptides. FEMS Microbiol Rev 2018; 41:323-342. [PMID: 28521337 PMCID: PMC5435762 DOI: 10.1093/femsre/fux012] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 02/28/2017] [Indexed: 12/15/2022] Open
Abstract
Infectious diseases caused by bacteria, viruses or fungi are among the leading causes of death worldwide. The emergence of drug-resistance mechanisms, especially among bacteria, threatens the efficacy of all current antimicrobial agents, some of them already ineffective. As a result, there is an urgent need for new antimicrobial drugs. Host defense antimicrobial peptides (HDPs) are natural occurring and well-conserved peptides of innate immunity, broadly active against Gram-negative and Gram-positive bacteria, viruses and fungi. They also are able to exert immunomodulatory and adjuvant functions by acting as chemotactic for immune cells, and inducing cytokines and chemokines secretion. Moreover, they show low propensity to elicit microbial adaptation, probably because of their non-specific mechanism of action, and are able to neutralize exotoxins and endotoxins. HDPs have the potential to be a great source of novel antimicrobial agents. The goal of this review is to provide an overview of the advances made in the development of human defensins as well as the cathelicidin LL-37 and their derivatives as antimicrobial agents against bacteria, viruses and fungi for clinical use.
Collapse
Affiliation(s)
- María Eugenia Pachón-Ibáñez
- Clinical Unit of Infectious Diseases, Microbiology and Preventive Medicine, Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville
| | - Younes Smani
- Clinical Unit of Infectious Diseases, Microbiology and Preventive Medicine, Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville
| | - Jerónimo Pachón
- Clinical Unit of Infectious Diseases, Microbiology and Preventive Medicine, Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville.,Department of Medicine, University of Seville, Seville, Spain
| | - Javier Sánchez-Céspedes
- Clinical Unit of Infectious Diseases, Microbiology and Preventive Medicine, Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville.,Department of Medicine, University of Seville, Seville, Spain
| |
Collapse
|
24
|
Srisomboon Y, Poonyachoti S, Deachapunya C. Soy isoflavones enhance β-defensin synthesis and secretion in endometrial epithelial cells with exposure to TLR3 agonist polyinosinic-polycytidylic acid. Am J Reprod Immunol 2017; 78. [PMID: 28429578 DOI: 10.1111/aji.12694] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 03/25/2017] [Indexed: 12/14/2022] Open
Abstract
PROBLEM β-defensins are important innate chemical barriers that protect the endometrium from pathogen invasion. The effects of soy isoflavones, genistein and daidzein, on the expression and secretion of porcine β-defensins (PBD) in endometrial epithelial cells were investigated under normal or poly I:C-stimulated conditions. METHOD OF STUDY Primary cultured porcine endometrial epithelial (PE) cells were pretreated with genistein or daidzein followed by poly I:C inoculation. During treatment, the culture media were analyzed for PBD 1-4 secretion by ELISA and the total RNA for PBD gene expression by quantitative RT-PCR. RESULTS Porcine endometrial epithelial cells constitutively expressed PBD 1-4 and secreted PBD-1, PBD-2, and PBD-4. Genistein and daidzein enhanced PBD-2 expression and PBD-2 and PBD-3 secretion. These compounds also potentiated PBD-2 and PBD-3 expression and secretion which were upregulated by poly I:C. CONCLUSION Soy isoflavones, genistein and daidzein, could be potentially used for promoting the innate host defense of endometrium against infection.
Collapse
Affiliation(s)
- Yotesawee Srisomboon
- Department of Physiology, Faculty of Medicine, Srinakharinwirot University, Bangkok, Thailand
| | - Sutthasinee Poonyachoti
- Department of Physiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Chatsri Deachapunya
- Department of Physiology, Faculty of Medicine, Srinakharinwirot University, Bangkok, Thailand
| |
Collapse
|
25
|
Litosh VA, Rochman M, Rymer JK, Porollo A, Kottyan LC, Rothenberg ME. Calpain-14 and its association with eosinophilic esophagitis. J Allergy Clin Immunol 2017; 139:1762-1771.e7. [PMID: 28131390 DOI: 10.1016/j.jaci.2016.09.027] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 08/16/2016] [Accepted: 09/09/2016] [Indexed: 12/12/2022]
Abstract
Calpains are a family of intracellular, calcium-dependent cysteine proteases involved in a variety of regulatory processes, including cytoskeletal dynamics, cell-cycle progression, signal transduction, gene expression, and apoptosis. These enzymes have been implicated in a number of disease processes, notably for this review involving eosinophilic tissue inflammation, such as eosinophilic esophagitis (EoE), a chronic inflammatory disorder triggered by allergic hypersensitivity to food and associated with genetic variants in calpain 14 (CAPN14). Herein we review the genetic, structural, and biochemical properties of CAPN14 and its gene product CAPN14, and its emerging role in patients with EoE. The CAPN14 gene is localized at chromosome 2p23.1-p21 and is most homologous to CAPN13 (36% sequence identity), which is located 365 kb downstream of CAPN14. Structurally, CAPN14 has classical calpain motifs, including a cysteine protease core. In comparison with other human calpains, CAPN14 has a unique expression pattern, with the highest levels in the upper gastrointestinal tract, particularly in the squamous epithelium of the esophagus. The CAPN14 gene is positioned in an epigenetic hotspot regulated by IL-13, a TH2 cytokine with increased levels in patients with EoE that has been shown to be a mediator of the disease. CAPN14 induces disruptive effects on the esophageal epithelium by impairing epithelial barrier function in association with loss of desmoglein-1 expression and has a regulatory role in repairing epithelial changes induced by IL-13. Thus CAPN14 is a unique protease with distinct tissue-specific expression and function in patients with EoE and is a potential therapeutic target for EoE and related eosinophilic and allergic diseases.
Collapse
Affiliation(s)
- Vladislav A Litosh
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Mark Rochman
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Jeffrey K Rymer
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Molecular Genetics, Biochemistry, and Microbiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Aleksey Porollo
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Leah C Kottyan
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Marc E Rothenberg
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio.
| |
Collapse
|
26
|
Bayer A, Lammel J, Rademacher F, Groß J, Siggelkow M, Lippross S, Klüter T, Varoga D, Tohidnezhad M, Pufe T, Cremer J, Gläser R, Harder J. Platelet-released growth factors induce the antimicrobial peptide human beta-defensin-2 in primary keratinocytes. Exp Dermatol 2016; 25:460-5. [PMID: 26843467 DOI: 10.1111/exd.12966] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/29/2016] [Indexed: 12/12/2022]
Abstract
Platelet-released growth factors (PRGF) and its related clinically used formulations [e.g. Vivostat platelet-rich fibrin (PRF(®) )] are thrombocyte concentrate lysates that support healing of chronic, hard-to-heal and infected wounds. Human beta-defensin-2 (hBD-2) is an antimicrobial peptide expressed in human keratinocytes exhibiting potent antimicrobial activity against wound-related bacteria. In this study, we analysed the influence of PRGF on hBD-2 expression in human primary keratinocytes and the influence of Vivostat PRF(®) on hBD-2 expression in experimentally generated skin wounds in vivo. Treatment of primary keratinocytes with PRGF caused a significant increase in hBD-2 gene and protein expressions in a concentration- and time-dependent manner. The use of blocking antibodies revealed that the PRGF-mediated hBD-2 induction was partially mediated by the epidermal growth factor receptor and the interleukin-6 receptor (IL-6R). Luciferase gene reporter assays indicated that the hBD-2 induction through PRGF required activation of the transcription factor activator protein 1 (AP-1), but not of NF-kappaB. In concordance with these cell culture data, Vivostat PRF(®) induced hBD-2 expression when applied to experimentally generated skin wounds. Together, our results indicate that the induction of hBD-2 by thrombocyte concentrate lysates can contribute to the observed beneficial effects in the treatment of chronic and infected wounds.
Collapse
Affiliation(s)
- Andreas Bayer
- Department of Heart- and Vascular Surgery, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Justus Lammel
- Department of Dermatology, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Franziska Rademacher
- Department of Dermatology, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Justus Groß
- Department of Heart- and Vascular Surgery, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Markus Siggelkow
- Department of Vascular and Thoracic Surgery, Imland Clinic Rendsburg, Rendsburg, Germany
| | - Sebastian Lippross
- Department of Traumatology, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Tim Klüter
- Department of Traumatology, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Deike Varoga
- Department of Traumatology, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Mersedeh Tohidnezhad
- Institute of Anatomy and Cell Biology, RWTH University of Aachen, Aachen, Germany
| | - Thomas Pufe
- Institute of Anatomy and Cell Biology, RWTH University of Aachen, Aachen, Germany
| | - Jochen Cremer
- Department of Heart- and Vascular Surgery, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Regine Gläser
- Department of Dermatology, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Jürgen Harder
- Department of Dermatology, University Hospital of Schleswig-Holstein, Kiel, Germany
| |
Collapse
|
27
|
Haarmann H, Steiner T, Schreiber F, Heinrich A, Zweigner J, N'Guessan PD, Slevogt H. The role and regulation of Moraxella catarrhalis-induced human beta-defensin 3 expression in human pulmonary epithelial cells. Biochem Biophys Res Commun 2015; 467:46-52. [PMID: 26417692 DOI: 10.1016/j.bbrc.2015.09.126] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 09/23/2015] [Indexed: 11/18/2022]
Abstract
BACKGROUND Bacterial colonisation with Moraxella catarrhalis may partly sustain chronic inflammation in the lower airways of patients with chronic obstructive pulmonary disease (COPD). In addition, this bacterium causes infectious exacerbations of COPD, which often necessitate treatment with antibiotics. Antimicrobial peptides are the body's own antibiotic substances with bactericidal and bacteriostatic, as well as immunomodulatory function. In particular, human beta-defensin 3 (hBD-3) exerts an antimicrobial effect against an extraordinarily broad spectrum of pathogens. We therefore investigated the role of hBD-3 in infections of pulmonary epithelial cells with M. catarrhalis. METHODS The antimicrobial activity of hBD-3 vs. M. catarrhalis was evaluated in an antimicrobial susceptibility assay. We analyzed hBD-3 secretion of M. catarrhalis-infected pulmonary epithelial cells using ELISA. The role of M. catarrhalis-specific virulence factors, toll-like receptors (TLR) 2 and 4, MAPK pathways, and transcription factors AP-1 and NF-κB in the induction and regulation of hBD-3 expression were explored with specific inhibitors, small interference RNA, Western Blot, and chromatin immunoprecipitation (ChIP) assays. RESULTS HBD-3 exhibited a strong bactericidal effect against M. catarrhalis. M. catarrhalis induced hBD-3 expression in pulmonary epithelial cells, which was dependent on M. catarrhalis membranous lipoolygosaccharide (LOS), while the surface proteins UspA1 and UspA2 were not involved. Gene silencing of TLR2, but not TLR4, led to a reduced hBD-3 secretion after stimulation with M. catarrhalis or M. catarrhalis LOS. Inhibition of MAPKs ERK1/2 and JNK, but not p38, reduced hBD-3 secretion. HBD-3 expression was mediated through the recruitment of AP-1 to the hBD-3 gene promoter and was independent of NF-κB. CONCLUSION The immune response of pulmonary epithelial cells towards M. catarrhalis involves secretion of hBD-3, which has a bactericidal effect against this pathogen. Binding of M. catarrhalis virulence factor LOS to TLR2 causes an ERK1/2- and JNK-dependent induction of AP-1-related transcription of the hBD-3 gene, resulting in the production and secretion of hBD-3.
Collapse
Affiliation(s)
- Helge Haarmann
- Clinic for Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany; Department of Internal Medicine/Infectious Diseases, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Tamara Steiner
- Department of Internal Medicine/Infectious Diseases, Charité - Universitätsmedizin Berlin, Berlin, Germany; Neurological Rehabilitation Center for Children and Adolescents, Helios Klinikum Hohenstücken, Brandenburg, Germany
| | | | | | - Janine Zweigner
- Department of Infection Control and Hospital Hygiene, University Hospital Cologne, Cologne, Germany
| | - Philippe Dje N'Guessan
- Department of Pulmonary and Critical Care Medicine, Red Cross Hospital, Stuttgart, Germany
| | | |
Collapse
|
28
|
Nittayananta W, Tao R, Jiang L, Peng Y, Huang Y. Oral innate immunity in HIV infection in HAART era. J Oral Pathol Med 2015; 45:3-8. [PMID: 25639844 DOI: 10.1111/jop.12304] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/01/2014] [Indexed: 02/05/2023]
Abstract
Oral innate immunity, an important component in host defense and immune surveillance in the oral cavity, plays a crucial role in the regulation of oral health. As part of the innate immune system, epithelial cells lining oral mucosal surfaces not only provide a physical barrier but also produce different antimicrobial peptides, including human β-defensins (hBDs), secretory leukocyte protease inhibitor (SLPI), and various cytokines. These innate immune mediators help in maintaining oral homeostasis. When they are impaired either by local or systemic causes, various oral infections and malignancies may be developed. Human immunodeficiency virus (HIV) infection and other co-infections appear to have both direct and indirect effects on systemic and local innate immunity leading to the development of oral opportunistic infections and malignancies. Highly active antiretroviral therapy (HAART), the standard treatment of HIV infection, contributed to a global reduction of HIV-associated oral lesions. However, prolonged use of HAART may lead to adverse effects on the oral innate immunity resulting in the relapse of oral lesions. This review article focused on the roles of oral innate immunity in HIV infection in HAART era. The following five key questions were addressed: (i) What are the roles of oral innate immunity in health and disease?, (ii) What are the effects of HIV infection on oral innate immunity?, (iii) What are the roles of oral innate immunity against other co-infections?, (iv) What are the effects of HAART on oral innate immunity?, and (v) Is oral innate immunity enhanced by HAART?
Collapse
Affiliation(s)
| | - Renchuan Tao
- Department of Periodontology and Oral Medicine, College of Stomatology, Guangxi Medical University, Guangxi, China.,Guangxi Key Laboratory of AIDS Prevention and Treatment, Guangxi Medical University, Guangxi, China
| | - Lanlan Jiang
- Department of Periodontology and Oral Medicine, College of Stomatology, Guangxi Medical University, Guangxi, China
| | - Yuanyuan Peng
- Department of Periodontology and Oral Medicine, College of Stomatology, Guangxi Medical University, Guangxi, China
| | - Yuxiao Huang
- Department of Periodontology and Oral Medicine, College of Stomatology, Guangxi Medical University, Guangxi, China
| |
Collapse
|
29
|
Goupil M, Cousineau-Côté V, Aumont F, Sénéchal S, Gaboury L, Hanna Z, Jolicoeur P, de Repentigny L. Defective IL-17- and IL-22-dependent mucosal host response to Candida albicans determines susceptibility to oral candidiasis in mice expressing the HIV-1 transgene. BMC Immunol 2014; 15:49. [PMID: 25344377 PMCID: PMC4213580 DOI: 10.1186/s12865-014-0049-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 10/16/2014] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The tissue-signaling cytokines IL-17 and IL-22 are critical to host defense against oral Candida albicans infection, by their induction of oral antimicrobial peptide expression and recruitment of neutrophils. Mucosal Th17 cells which produce these cytokines are preferentially depleted in HIV-infected patients. Here, we tested the hypothesis that defective IL-17- and IL-22-dependent host responses to C. albicans determine the phenotype of susceptibility to oropharyngeal candidiasis (OPC) in transgenic (Tg) mice expressing HIV-1. RESULTS Naïve CD4+ T-cells and the differentiated Th1, Th2, Th17, Th1Th17 and Treg lineages were all profoundly depleted in cervical lymph nodes (CLNs) of these Tg mice. However, naive CD4+ cells from Tg mice maintained the capacity to differentiate into these lineages in response to polarizing cytokines in vitro. Expression of Il17, Il22, S100a8 and Ccl20 was enhanced in oral mucosal tissue of non-Tg, but not of Tg mice, after oral infection with C. albicans. Treatment of infected Tg mice with the combination of IL-17 and IL-22, but not IL-17 or Il-22 alone, significantly reduced oral burdens of C. albicans and abundance of Candida hyphae in the epithelium of tongues of infected Tg mice, and restored the ability of the Tg mice to up-regulate expression of S100a8 and Ccl20 in response to C. albicans infection. CONCLUSIONS These findings demonstrate that defective IL-17- and IL-22-dependent induction of innate mucosal immunity to C. albicans is central to the phenotype of susceptibility to OPC in these HIV transgenic mice.
Collapse
Affiliation(s)
- Mathieu Goupil
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, University of Montreal, C.P. 6128, succursale Centre-Ville, Montreal, Quebec, H3C 3J7, Canada.
| | - Vincent Cousineau-Côté
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, University of Montreal, C.P. 6128, succursale Centre-Ville, Montreal, Quebec, H3C 3J7, Canada.
| | - Francine Aumont
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, University of Montreal, C.P. 6128, succursale Centre-Ville, Montreal, Quebec, H3C 3J7, Canada.
| | - Serge Sénéchal
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, University of Montreal, C.P. 6128, succursale Centre-Ville, Montreal, Quebec, H3C 3J7, Canada.
| | - Louis Gaboury
- Pathology and Cell Biology, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada.
- Histology and Molecular Pathology research unit, Institute for Research in Immunology and Cancer, C.P. 6128, succursale Centre-Ville, Montreal, QC, H3C 3J7, Canada.
| | - Zaher Hanna
- Medicine, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada.
- Laboratory of Molecular Biology, Clinical Research Institute of Montreal, Montreal, Quebec, Canada.
- Division of Experimental Medicine, McGill University, Montreal, Quebec, Canada.
| | - Paul Jolicoeur
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, University of Montreal, C.P. 6128, succursale Centre-Ville, Montreal, Quebec, H3C 3J7, Canada.
- Laboratory of Molecular Biology, Clinical Research Institute of Montreal, Montreal, Quebec, Canada.
- Division of Experimental Medicine, McGill University, Montreal, Quebec, Canada.
| | - Louis de Repentigny
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, University of Montreal, C.P. 6128, succursale Centre-Ville, Montreal, Quebec, H3C 3J7, Canada.
| |
Collapse
|
30
|
Abstract
The human pathogenic fungus Candida albicans is the predominant cause of both superficial and invasive forms of candidiasis. C. albicans primarily infects immunocompromised individuals as a result of either immunodeficiency or intervention therapy, which highlights the importance of host immune defences in preventing fungal infections. The host defence system utilises a vast communication network of cells, proteins, and chemical signals distributed in blood and tissues, which constitute innate and adaptive immunity. Over the last decade the identity of many key molecules mediating host defence against C. albicans has been identified. This review will discuss how the host recognises this fungus, the events induced by fungal cells, and the host innate and adaptive immune defences that ultimately resolve C. albicans infections during health.
Collapse
|
31
|
Abstract
Currently, Acinetobacter baumannii is recognized as one of the major pathogens seriously threatening our health care delivery system. Aspects of the innate immune response to A. baumannii infection are not yet well understood. Human β-defensins (hBDs) are epithelial cell-derived cationic antimicrobial peptides (AMPs) that also function to bridge the innate and adaptive immune system. We tested the induction of hBD-2 and -3 by A. baumannii on primary oral and skin epithelial cells and found that A. baumannii induces hBD-3 transcripts to a greater extent than it induces hBD-2 transcripts on both types of cells. In addition, we found that A. baumannii is susceptible to hBD-2 and -3 killing at submicromolar concentrations. Moreover, hBD-3 induction by A. baumannii was found to be dependent on epidermal growth factor receptor (EGFR) signaling. Inhibition of mitogen-activated protein kinase resulted in reduced expression of both hBD-2 and -3. Lastly, a disintegrin and metalloprotease 17 (ADAM17; also known as TACE) was found to be critical for hBD-3 induction, while ADAM10 and dual oxidase 1 (Duox1) were not required for hBD-3 induction. Induction of AMPs is an important component of innate sensing of pathogens and may play an important role in triggering systemic immune responses to A. baumannii infection. Further studies on the interactions between epithelial cells and A. baumannii will help us understand early stages of infection and may shed light on why some individuals are more vulnerable to A. baumannii infection.
Collapse
|
32
|
Kim KH, Lee J, Han JH, Myung SC. Beta-Defensin 124 Is Required for Efficient Innate Immune Responses in Prostate Epithelial RWPE-1 Cells. Korean J Urol 2014; 55:417-25. [PMID: 24955228 PMCID: PMC4064052 DOI: 10.4111/kju.2014.55.6.417] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 04/09/2014] [Indexed: 11/18/2022] Open
Abstract
Purpose The present study aimed to determine the role played by β-defensin 124 (DEFB124) in the innate immunity of prostate epithelial RWPE-1 cells during bacterial infection. Materials and Methods The expression of DEFB124 was examined by quantitative real-time polymerase chain reaction (PCR), Western blotting, and immunocytochemistry. Enzyme-linked immunosorbent assays and quantitative real-time PCR were performed to determine the production of cytokines and chemokines. Western blotting and chromatin immunoprecipitation studies were performed to assess the interaction between DEFB124 and nuclear factor-kappa B (NF-κB) in peptidoglycan (PGN)-stimulated RWPE-1 cells. By chemotaxis assay, we assessed the effect of DEFB124 on the migration of monocytes. Results Exposure to PGN induced DEFB124 upregulation and NF-κB activation through IκBα phosphorylation and IκBα degradation. Bay11-7082, an NF-κB inhibitor, blocked PGN-induced DEFB124 production. Also, NF-κB was shown to be a direct regulator and to directly bind to the -3.14 kb site of the DEFB124 promoter in PGN-treated human prostate epithelial RWPE-1 cells. When DEFB124 was overexpressed in RWPE-1 cells, interestingly, the production of cytokines (interleukin [IL] 6 and IL-12) and chemokines (CCL5, CCL22, and CXCL8) was significantly increased. These DEFB124-upregulated RWPE-1 cells markedly induced chemotactic activity for THP-1 monocytes. Conclusions Taken together, these results provide strong evidence for the first time that increased DEFB124 expression via NF-κB activation in PGN-exposed RWPE-1 cells enhances the production of cytokines and chemokines, which may contribute to an efficient innate immune defense.
Collapse
Affiliation(s)
- Kyeoung-Hwa Kim
- Research Institute for Translational System Biomics, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jaehyouk Lee
- Research Institute for Translational System Biomics, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jun Hyun Han
- Department of Urology, Hallym University Dontan Sacred Heart Hospital, Hwaseong, Korea
| | - Soon Chul Myung
- Research Institute for Translational System Biomics, Chung-Ang University College of Medicine, Seoul, Korea. ; Department of Urology, Chung-Ang University College of Medicine, Seoul, Korea
| |
Collapse
|
33
|
Interplay between Candida albicans and the antimicrobial peptide armory. EUKARYOTIC CELL 2014; 13:950-7. [PMID: 24951441 DOI: 10.1128/ec.00093-14] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Antimicrobial peptides (AMPs) are key elements of innate immunity, which can directly kill multiple bacterial, viral, and fungal pathogens. The medically important fungus Candida albicans colonizes different host niches as part of the normal human microbiota. Proliferation of C. albicans is regulated through a complex balance of host immune defense mechanisms and fungal responses. Expression of AMPs against pathogenic fungi is differentially regulated and initiated by interactions of a variety of fungal pathogen-associated molecular patterns (PAMPs) with pattern recognition receptors (PRRs) on human cells. Inflammatory signaling and other environmental stimuli are also essential to control fungal proliferation and to prevent parasitism. To persist in the host, C. albicans has developed a three-phase AMP evasion strategy, including secretion of peptide effectors, AMP efflux pumps, and regulation of signaling pathways. These mechanisms prevent C. albicans from the antifungal activity of the major AMP classes, including cathelicidins, histatins, and defensins leading to a basal resistance. This minireview summarizes human AMP attack and C. albicans resistance mechanisms and current developments in the use of AMPs as antifungal agents.
Collapse
|
34
|
Hebecker B, Naglik JR, Hube B, Jacobsen ID. Pathogenicity mechanisms and host response during oral Candida albicans infections. Expert Rev Anti Infect Ther 2014; 12:867-79. [DOI: 10.1586/14787210.2014.916210] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Betty Hebecker
- Research Group Microbial Immunology, Leibniz Institute for Natural Product Research and Infection Biology – Hans Knoell Institute Jena (HKI),
Beutenbergstrasse 11a, 07745 Jena, Germany
- Department Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology – Hans Knoell Institute Jena (HKI),
Beutenbergstrasse 11a, 07745 Jena, Germany
| | - Julian R Naglik
- Mucosal and Salivary Biology Group, King’s College London Dental Institute, King’s College London,
London SE1 1UL, UK
| | - Bernhard Hube
- Department Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology – Hans Knoell Institute Jena (HKI),
Beutenbergstrasse 11a, 07745 Jena, Germany
- Integrated Research and Treatment Center, Sepsis und Sepsisfolgen, Center for Sepsis Control and Care (CSCC), Universitätsklinikum Jena
- Friedrich Schiller University,
Jena, Germany
| | - Ilse D Jacobsen
- Research Group Microbial Immunology, Leibniz Institute for Natural Product Research and Infection Biology – Hans Knoell Institute Jena (HKI),
Beutenbergstrasse 11a, 07745 Jena, Germany
| |
Collapse
|
35
|
Characteristic changes in microbial community composition and expression of innate immune genes in acute appendicitis. Innate Immun 2013; 21:30-41. [DOI: 10.1177/1753425913515033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Appendicitis represents a common and severe gastrointestinal illness in younger individuals worldwide. The disease is characterized by an excessive inflammatory response and it is believed that bacterial overgrowth due to blockage of the appendix lumen might be involved. Despite the high incidence, only limited data on the pathophysiological changes exist; in particular, the innate immune responses involved are largely unknown. Real-time PCR analysis of tissue samples from inflamed and normal appendices demonstrated differentially regulated expression patterns of epithelial-derived antimicrobial peptides (AMP). The α-defensins human neutrophil peptides 1–3, HD5 and HD6, as well as the two β-defensins, human β-defensins (hBD)-2 and hBD-3, were up-regulated, whereas hBD-1 was down-regulated in acute appendicitis. Expression of upstream regulators of AMP expression, NOD-2 and TLRs 1, 2, 4, 5, 7, 8 and 10 was significantly increased as detected by real-time PCR. Finally, we confirmed the involvement of the pro-inflammatory cytokines IL-1β and IL-8, and detected characteristic changes in microbial community composition in appendicitis tissue specimens by 16S rDNA based detection techniques. In this study, we demonstrate a differential regulation of the innate immune system along with an altered bacterial diversity in acute appendicitis.
Collapse
|
36
|
Liu J, Chen J, Du X, Hu L, Chen L. The expression of hBDs in the gingival tissue and keratinocytes from healthy subjects and periodontitis patients. Arch Oral Biol 2013; 59:193-8. [PMID: 24370191 DOI: 10.1016/j.archoralbio.2013.11.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 11/06/2013] [Accepted: 11/16/2013] [Indexed: 01/17/2023]
Abstract
OBJECTIVE Although the secretion of antimicrobial peptides in gingival tissue and isolated cells has been reported, the induction of human β-defensins (hBDs) in epithelial cells from the periodontitis patients was not stated before. This study aimed to compare the secretion of hBDs in gingival epithelial cells from periodontitis patients and healthy controls. DESIGN Firstly, gingival biopsies were obtained from chronic periodontitis patients and healthy controls and the hBDs expression level in gingival tissues was quantified. Then the epithelial cells from periodontitis patients and healthy controls were isolated and challenged with different concentrations of tumour necrosis factor-alpha (TNFα). The hBDs expression level was also quantified after induction. At last, to identify the molecular pathways involved in hBDs induction, the isolated cells were incubated with NF-kB or MAPK inhibitor before TNFα induction. RESULTS Higher hBDs expression was found in gingival tissues from healthy controls. The in vitro experiments demonstrated that the hBD-2 expression in gingival epithelial cells from periodontitis patients can be induced by TNFα at lower dose, while the optimum expression level was much lower. The basal hBD-3 mRNA expression was much higher in cells from periodontitis patients. The molecular pathways involved in the responses to the inflammatory cytokine in patients and healthy controls were the same. CONCLUSIONS The epithelial cells from periodontitis patients are more prone to recognize and respond to TNFα to produce hBD-2. The basal expression of hBD-3 in keratinocytes from periodontitis patients suggested that hBD-3 may play an important role in the immunological reaction against periodontitis.
Collapse
Affiliation(s)
- Jiarong Liu
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, PR China.
| | - Jie Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, PR China.
| | - Xingyan Du
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, PR China.
| | - Li Hu
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, PR China.
| | - Lili Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, PR China.
| |
Collapse
|
37
|
The induction expression of human β-defensins in gingival epithelial cells and fibroblasts. Arch Oral Biol 2013; 58:1415-21. [DOI: 10.1016/j.archoralbio.2013.04.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 04/18/2013] [Accepted: 04/26/2013] [Indexed: 01/09/2023]
|
38
|
Choi IJ, Rhee CS, Lee CH, Kim DY. Effect of allergic rhinitis on the expression of human β-defensin 2 in tonsils. Ann Allergy Asthma Immunol 2013; 110:178-83. [PMID: 23548528 DOI: 10.1016/j.anai.2012.12.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 12/19/2012] [Accepted: 12/26/2012] [Indexed: 11/28/2022]
Abstract
BACKGROUND Human β-defensins (HBDs) are a newly identified family of antimicrobial peptides that are expressed by epithelia on mucosal surfaces. Exposure of airway epithelial cells to TH2-type cytokines results in a significant decrease in the antimicrobial activity of the cells. OBJECTIVE To investigate the effect of allergic rhinitis on the expression of HBD-2 in tonsils and adenoids. METHODS Palatine tonsils and adenoids were obtained from 30 patients with no history of recurrent tonsillitis. The patients were divided into 2 groups: allergic rhinitis and nonallergic rhinitis groups. Real-time polymerase chain reaction analysis was used to measure messenger RNA (mRNA) levels of HBD-2 mRNA in tonsil and adenoid tissue samples from the 2 patient groups. Immunofluorescent staining and enzyme-linked immunosorbent assay (ELISA) were used to evaluate the expression of HBD-2 protein in tonsil and adenoid tissues. The concentration of the cytokines interleukin (IL) 4, IL-5, and interferon γ (IFN-γ) in tissue homogenates was measured by ELISA. RESULTS Immunofluorescent staining data demonstrated the expression of HBD-2 protein in the surface epithelia of tonsils, and a marked difference in the staining intensity was observed the between 2 groups. HBD-2 mRNA and protein levels in the tonsils were significantly lower in the allergic rhinitis group than that in the nonallergic rhinitis group (P = .03 and P = .04, respectively). IL-5 and IFN-γ were not detected, and no significant difference was found in IL-4 concentrations in tonsil homogenates between the 2 groups. CONCLUSION Allergic rhinitis suppresses HBD-2, an epithelial antimicrobial peptide, in the tonsils.
Collapse
Affiliation(s)
- Ik Joon Choi
- Department of Otorhinolaryngology, Korea Cancer Center Hospital, Seoul, Korea
| | | | | | | |
Collapse
|
39
|
Gratacap RL, Rawls JF, Wheeler RT. Mucosal candidiasis elicits NF-κB activation, proinflammatory gene expression and localized neutrophilia in zebrafish. Dis Model Mech 2013; 6:1260-70. [PMID: 23720235 PMCID: PMC3759345 DOI: 10.1242/dmm.012039] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The epithelium performs a balancing act at the interface between an animal and its environment to enable both pathogen killing and tolerance of commensal microorganisms. Candida albicans is a clinically important human commensal that colonizes all human mucosal surfaces, yet is largely prevented from causing mucosal infections in immunocompetent individuals. Despite the importance of understanding host-pathogen interactions at the epithelium, no immunocompetent vertebrate model has been used to visualize these dynamics non-invasively. Here we demonstrate important similarities between swimbladder candidiasis in the transparent zebrafish and mucosal infection at the mammalian epithelium. Specifically, in the zebrafish swimmbladder infection model, we show dimorphic fungal growth, both localized and tissue-wide epithelial NF-κB activation, induction of NF-κB -dependent proinflammatory genes, and strong neutrophilia. Consistent with density-dependence models of host response based primarily on tissue culture experiments, we show that only high-level infection provokes widespread activation of NF-κB in epithelial cells and induction of proinflammatory genes. Similar to what has been found using in vitro mammalian models, we find that epithelial NF-κB activation can occur at a distance from the immediate site of contact with epithelial cells. Taking advantage of the ability to non-invasively image infection and host signaling at high resolution, we also report that epithelial NF-κB activation is diminished when phagocytes control the infection. This is the first system to model host response to mucosal infection in the juvenile zebrafish, and offers unique opportunities to investigate the tripartite interactions of C. albicans, epithelium and immune cells in an intact host.
Collapse
Affiliation(s)
- Remi L Gratacap
- Department of Molecular and Biomedical Sciences, University of Maine, Orono, ME 04469, USA
| | | | | |
Collapse
|
40
|
Noth R, Häsler R, Stüber E, Ellrichmann M, Schäfer H, Geismann C, Hampe J, Bewig B, Wedel T, Böttner M, Schreiber S, Rosenstiel P, Arlt A. Oral glutamine supplementation improves intestinal permeability dysfunction in a murine acute graft-vs.-host disease model. Am J Physiol Gastrointest Liver Physiol 2013; 304:G646-54. [PMID: 23370678 DOI: 10.1152/ajpgi.00246.2012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Although a profound barrier dysfunction has been reported, little is known about the pathophysiological mechanism evoking gastrointestinal graft-vs.-host disease (GI-GvHD) and apparent therapeutic options. The aim of this study was to evaluate the influence of oral glutamine on the course of GI-GvHD in an acute semiallogenic graft-vs.-host disease (GvHD) in irradiated B6D2F1 mice. An acute semiallogenic GvHD was induced by intraperitoneal injection of lymphocytes from C57BL/6 mice to irradiated B6D2F1 mice. Half of the GvHD animals received oral glutamine supplementation for 6 days started at the time of lymphocyte transfer. Six days after induction of the semiallogenic GvHD, jejunum specimens were prepared. The expression of the proinflammatory cytokine TNF-α and the tight junction protein occludin was investigated by PCR. Histological changes along with the apoptotic response were evaluated and intestinal permeability was assessed. Animals with GvHD showed a strong increase in paracellular permeability as a sign of the disturbed barrier function. TNF-α expression was significantly increased and the expression of the tight junction protein occludin decreased. GvHD led to mucosal atrophy, crypt hyperplasia, crypt apoptosis, and a disintegration of the tight junctions. Glutamine-treated mice showed reduced expression of TNF-α, increased occludin expression, fewer histological changes in the jejunum, smaller number of apoptotic cells in the crypt, and reduced gastrointestinal permeability. In conclusion, oral glutamine seems to have beneficial effects on the severity of inflammatory changes in the course of GvHD and might be a therapeutic option.
Collapse
Affiliation(s)
- Rainer Noth
- Department of Internal Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Zhang W, Guo Y, Yu S, Wei J, Jin J. Effects of edaravone on the expression of β-defensin-2 mRNA in lung tissue of rats with myocardial ischemia reperfusion. Mol Med Rep 2013; 7:1683-7. [PMID: 23525405 DOI: 10.3892/mmr.2013.1393] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Accepted: 03/01/2013] [Indexed: 11/06/2022] Open
Abstract
The aim of this study was to investigate the effects of edaravone on lung injury caused by myocardial ischemia reperfusion (I/R) in rats. Wistar rats (n=24) were randomly divided into 4 groups: the sham operation (S group) and myocardial I/R groups (C group) and two edaravone‑treated groups (E1 and E2 groups). Rats in the E1 and E2 groups were injected with 3 or 10 mg/kg edaravone, respectively, 1 min before reperfusion. The rats were sacrificed and the lung tissue, bronchoalveolar lavage (BAL) fluid and serum were obtained. The concentration of serum creatine kinase isoenzyme (CK-MB) was determined, the lung permeability index (PPI) was calculated and β-defensin-2 (BD-2) mRNA expression in the lung tissue and BD-2 and TNF-α protein content levels were determined. Serum CK-MB activity and the PPI were increased, while BD-2 mRNA and BD‑2 and TNF-α protein levels in the lung tissue were upregulated in the C, E1 and E2 groups compared with the S group. The above‑mentioned indicators were decreased in the E1 and E2 groups compared with the IR group. The level of the decrease for indicators in the E2 group was significantly different compared with that in the E1 group. In conclusion, edaravone reduced the lung injury caused by myocardial I/R in rats. Its mechanism of action was not only oxygen free radical scavenging, but was also associated with a suppression of the inflammatory response of the lung tissue.
Collapse
Affiliation(s)
- Weiwei Zhang
- Department of Anesthesiology, Shanxi Provincial People's Hospital, Taiyuan, Shanxi 030012, P.R. China
| | | | | | | | | |
Collapse
|
42
|
Antimicrobial Human β-Defensins in the Colon and Their Role in Infectious and Non-Infectious Diseases. Pathogens 2013; 2:177-92. [PMID: 25436887 PMCID: PMC4235710 DOI: 10.3390/pathogens2010177] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 03/01/2013] [Accepted: 03/10/2013] [Indexed: 01/02/2023] Open
Abstract
β-defensins are small cationic antimicrobial peptides secreted by diverse cell types including colonic epithelial cells. Human β-defensins form an essential component of the intestinal lumen in innate immunity. The defensive mechanisms of β-defensins include binding to negatively charged microbial membranes that cause cell death and chemoattraction of immune cells. The antimicrobial activity of β-defensin is well reported in vitro against several enteric pathogens and in non-infectious processes such as inflammatory bowel diseases, which alters β-defensin production. However, the role of β-defensin in vivo in its interaction with other immune components in host defense against bacteria, viruses and parasites with more complex membranes is still not well known. This review focuses on the latest findings regarding the role of β-defensin in relevant human infectious and non-infectious diseases of the colonic mucosa. In addition, we summarize the most significant aspects of β-defensin and its antimicrobial role in a variety of disease processes.
Collapse
|
43
|
de Oca EPM. Antimicrobial peptide elicitors: New hope for the post-antibiotic era. Innate Immun 2012; 19:227-41. [DOI: 10.1177/1753425912460708] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Antimicrobial peptides or host defense peptides are fundamental components of human innate immunity. Recent and growing evidence suggests they have a role in a broad range of diseases, including cancer, allergies and susceptibility to infection, including HIV/AIDS. Antimicrobial peptide elicitors (APEs) are physical, biological or chemical agents that boost human antimicrobial peptide expression. The current knowledge of APEs and their potential use in the treatment of human infectious diseases are reviewed, and a classification system for APEs is proposed. The efficient use of APEs in clinical practice could mark the beginning of the urgently needed post-antibiotic era, but further trials assessing their efficacy and safety are required.
Collapse
Affiliation(s)
- Ernesto Prado Montes de Oca
- Molecular Biology Laboratory, Biosecurity Area, CIATEJ – National Council of Science and Technology, Guadalajara, Jalisco, Mexico
- In silico Laboratory, Pharmaceutical and Medical Biotechnology Unit, CIATEJ – National Council of Science and Technology, Guadalajara, Jalisco, Mexico
| |
Collapse
|
44
|
Zaga-Clavellina V, Ruiz M, Flores-Espinosa P, Vega-Sanchez R, Flores-Pliego A, Estrada-Gutierrez G, Sosa-Gonzalez I, Morales-Méndez I, Osorio-Caballero M. Tissue-specific human beta-defensins (HBD)-1, HBD-2 and HBD-3 secretion profile from human amniochorionic membranes stimulated with Candida albicans in a two-compartment tissue culture system. Reprod Biol Endocrinol 2012; 10:70. [PMID: 22943496 PMCID: PMC3495197 DOI: 10.1186/1477-7827-10-70] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Accepted: 08/27/2012] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND During intrauterine infection, amniochorionic membranes represent a mechanical and immunological barrier against dissemination of infection. Human beta defensins (HBD)-1, HBD-2, and HBD-3 are key elements of innate immunity that represent the first line of defense against different pathogen microorganisms associated with preterm labor. The aim of this work was to characterize the individual contribution of the amnion (AMN) and choriodecidua (CHD) regions to the secretion of HBD-1, HBD-2 and HBD-3, after stimulation with Candida albicans. METHODS Full-thickness human amniochorionic membranes were obtained after delivery by elective cesarean section from women at 37-40 wk of gestation with no evidence of active labor. The membranes were cultured in a two-compartment experimental model in which the upper compartment is delimited by the amnion and the lower chamber by the choriodecidual membrane. One million of Candida albicans were added to either the AMN or the CHD face or to both and compartmentalized secretion profiles of HBD-1, HBD-2, and HBD-3 were quantified by ELISA. Tissue immunolocalization was performed to detect the presence of HBD-1, -2, -3 in tissue sections stimulated with Candida albicans. RESULTS HBD-1 secretion level by the CHD compartment increased 2.6 times (27.30 [20.9-38.25] pg/micrograms protein) when the stimulus with Candida albicans was applied only on this side of the membrane and 2.4 times (26.55 [19.4-42.5] pg/micrograms protein) when applied to both compartments simultaneously. HBD-1 in the amniotic compartment remained without significant changes. HBD-2 secretion level increased significantly in the CHD when the stimulus was applied only to this region (2.49 [1.49-2.95] pg/micrograms protein) and simultaneously to both compartments (2.14 [1.67- 2.91] pg/micrograms protein). When the stimulus was done in the amniotic compartment HBD-2 remained without significant changes in both compartments. HBD-3 remained without significant changes in both compartments regardless of the stimulation modality. Localization of immune-reactive forms of HBD-1, HBD-2, and HBD-3 was carried out by immunohistochemistry confirming the cellular origin of these peptides. CONCLUSION Selective stimulation of amniochorionic membranes with Candida albicans resulted in tissue-specific secretion of HBD-1 and HBD-2, mainly in the CHD, which is the first region to become infected during an ascending infection.
Collapse
Affiliation(s)
- Veronica Zaga-Clavellina
- Department of Cell Biology, Instituto Nacional de Perinatologia “Isidro Espinosa de los Reyes”, Mexico City, Mexico
| | - Martha Ruiz
- Department of Cell Biology, Instituto Nacional de Perinatologia “Isidro Espinosa de los Reyes”, Mexico City, Mexico
| | - Pilar Flores-Espinosa
- Department of Cell Biology, Instituto Nacional de Perinatologia “Isidro Espinosa de los Reyes”, Mexico City, Mexico
| | - Rodrigo Vega-Sanchez
- Department of Nutrition Research, Instituto Nacional de Perinatologia “Isidro Espinosa de los Reyes”, Mexico City, Mexico
| | - Arturo Flores-Pliego
- Department of Biochemistry and Molecular Biology, Instituto Nacional de Perinatologia “Isidro Espinosa de los Reyes”, Mexico City, Mexico
| | - Guadalupe Estrada-Gutierrez
- Department of Infectology, Instituto Nacional de Perinatologia “Isidro Espinosa de los Reyes”, Mexico City, Mexico
| | - Irma Sosa-Gonzalez
- Department of Infectology, Instituto Nacional de Perinatologia “Isidro Espinosa de los Reyes”, Mexico City, Mexico
| | - Iyari Morales-Méndez
- Department of Infectology, Instituto Nacional de Perinatologia “Isidro Espinosa de los Reyes”, Mexico City, Mexico
| | - Mauricio Osorio-Caballero
- Department of Family Planning, Department of Gynecology and Obstetrics, Instituto Nacional de Perinatologia “Isidro Espinosa de los Reyes”, Mexico City, Mexico
| |
Collapse
|
45
|
Shuyi Y, Feng W, Jing T, Hongzhang H, Haiyan W, Pingping M, Liwu Z, Zwahlen RA, Hongyu Y. Human beta-defensin-3 (hBD-3) upregulated by LPS via epidermal growth factor receptor (EGFR) signaling pathways to enhance lymphatic invasion of oral squamous cell carcinoma. ACTA ACUST UNITED AC 2012; 112:616-25. [PMID: 22035653 DOI: 10.1016/j.tripleo.2011.02.053] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 02/12/2011] [Accepted: 02/15/2011] [Indexed: 11/27/2022]
Abstract
OBJECTIVE In this study, the hypothesis that hBD-3 is upregulated by LPS via epidermal growth factor receptor (EGFR) signaling pathways to enhance metastasis in oral squamous cell carcinoma (OSCC) was tested. STUDY DESIGN hBD-3 expression in human tissue specimens was evaluated by RT-qPCR and immunohistochemical staining. The presence of hBD-3 peptide in the culture supernatants of each type of treated cells was evaluated by enzyme-linked immunosorbent assay. The chemotaxis response to LPS or hBD-3 protein of SCC-25 cells or siRNA-hBD-3 transfected cells were also measured by chemotaxis assay. Paired, 2-tailed Student t test and analysis of variance was used to assess the statistical significance between 2 groups or many groups. RESULTS hBD-3 is highly expressed and associated with lymphatic invasion of OSCC. hBD-3 expression and EGFR phosphorylation were markedly upregulated when SCC-25 cells were treated with LPS. When SCC-25 cells were preincubated with EGFR inhibitor or TLR4-neutralizing Ab before LPS stimulation, a decrease in the expression of hBD-3 was observed. hBD-3 markedly enhanced cancer metastasis, and the chemotaxis response to LPS of SCC-25 cells was partly blocked by siRNA target hBD-3. CONCLUSION These findings indicate that hBD-3 is upregulated by LPS via EGFR signaling pathways to enhance lymphatic invasion of OSCC.
Collapse
Affiliation(s)
- Yu Shuyi
- Shenzhen PKU-HKUST Medical Center, Shenzhen, China
| | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Scharf S, Zahlten J, Szymanski K, Hippenstiel S, Suttorp N, N'Guessan PD. Streptococcus pneumoniaeinduces human β-defensin-2 and -3 in human lung epithelium. Exp Lung Res 2012; 38:100-10. [DOI: 10.3109/01902148.2011.652802] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
47
|
Kolar SS, McDermott AM. Role of host-defence peptides in eye diseases. Cell Mol Life Sci 2011; 68:2201-13. [PMID: 21584809 PMCID: PMC3637883 DOI: 10.1007/s00018-011-0713-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Revised: 04/26/2011] [Accepted: 04/26/2011] [Indexed: 10/18/2022]
Abstract
The eye and its associated tissues including the lacrimal system and lids have evolved several defence mechanisms to prevent microbial invasion. Included among this armory are several host-defence peptides. These multifunctional molecules are being studied not only for their endogenous antimicrobial properties but also for their potential therapeutic effects. Here the current knowledge of host-defence peptide expression in the eye will be summarised. The role of these peptides in eye disease will be discussed with the primary focus being on infectious keratitis, inflammatory conditions including dry eye and wound healing. Finally the potential of using host-defence peptides and their mimetics/derivatives for the treatment and prevention of eye diseases is addressed.
Collapse
Affiliation(s)
- Satya S. Kolar
- College of Optometry, University of Houston, 4901 Calhoun Road, 505 J Davis Armistead Bldg, Houston, TX 77204-2020 USA
| | - Alison M. McDermott
- College of Optometry, University of Houston, 4901 Calhoun Road, 505 J Davis Armistead Bldg, Houston, TX 77204-2020 USA
| |
Collapse
|
48
|
Mohammed I, Yeung A, Abedin A, Hopkinson A, Dua HS. Signalling pathways involved in ribonuclease-7 expression. Cell Mol Life Sci 2011; 68:1941-52. [PMID: 20967562 PMCID: PMC11114760 DOI: 10.1007/s00018-010-0540-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2009] [Revised: 09/22/2010] [Accepted: 09/27/2010] [Indexed: 12/20/2022]
Abstract
Antimicrobial peptides are host defence molecules that play a potential role in preventing infection at the epithelial surfaces. Ribonuclease (RNase)-7 has been shown to possess a broad spectrum of microbicidal activity against various pathogens. Here, we demonstrate that RNase-7 protein is localised to the superficial layers of ocular surface cells and increased in response to interleukin (IL)-1β, suggesting an active role during inflammation related to ocular surface infection. Signal transduction pathways involved in RNase-7 expression are unknown. Involvement of transforming growth factor β-activated kinase-1 (TAK-1) activated nuclear factor kappa B (NF-κB) and mitogen-activated protein kinase (MAPK) pathway molecules [c-Jun N-terminal kinase (JNK), extracellular signal-regulated kinase (ERK) and p38] were studied because of their importance in infection and inflammation. Blocking the MAPKs resulted in inhibition of RNase-7 expression in response to IL-1β. However, RNase-7 induction by IL-1β was not affected by inhibiting the NF-κB signalling pathway. In conclusion, our results indicate that RNase-7 expression is specifically mediated via MAPKs but not NF-κB signalling pathways.
Collapse
Affiliation(s)
- Imran Mohammed
- Larry A Donoso Laboratory for Eye Research, Division of Ophthalmology and Visual Sciences, University Hospital, Nottingham, NG7 2UH UK
| | - Aaron Yeung
- Larry A Donoso Laboratory for Eye Research, Division of Ophthalmology and Visual Sciences, University Hospital, Nottingham, NG7 2UH UK
| | - Asiya Abedin
- Larry A Donoso Laboratory for Eye Research, Division of Ophthalmology and Visual Sciences, University Hospital, Nottingham, NG7 2UH UK
| | - Andrew Hopkinson
- Larry A Donoso Laboratory for Eye Research, Division of Ophthalmology and Visual Sciences, University Hospital, Nottingham, NG7 2UH UK
| | - Harminder S. Dua
- Larry A Donoso Laboratory for Eye Research, Division of Ophthalmology and Visual Sciences, University Hospital, Nottingham, NG7 2UH UK
- Division of Ophthalmology and Visual Sciences, Eye and ENT Building, Queens Medical Centre Campus, Derby Road, Nottingham, NG7 2UH UK
| |
Collapse
|
49
|
Interaction of the mucosal barrier with accessory immune cells during fungal infection. Int J Med Microbiol 2011; 301:431-5. [PMID: 21550846 DOI: 10.1016/j.ijmm.2011.04.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The mucosal epithelium is of central importance in host defence and immune surveillance, as it is the primary cell layer that initially encounters environmental microorganisms. Induction of antifungal innate immune responses depends on recognition of fungal components by host pattern recognition receptors. Members of the Toll-like receptor family have emerged as key sensors that recognize fungal pathogens and trigger defence responses. During oral infection with the fungal pathogen Candida albicans, a large number of cytokines is secreted by oral epithelial cells, which in turn activate myeloid cells in the submucosal layers to clear the invading pathogen. Recent data provide novel insights into the complex molecular mechanisms of innate immune responses initiated by cooperation between epithelial cells and neutrophils. In this review, we discuss the role of epithelial TLRs and how the immunological crosstalk between C. albicans-infected oral epithelium and neutrophils protects the mucosal surface from fungal invasion and cell injury.
Collapse
|
50
|
Pahl R, Brunke G, Steubesand N, Schubert S, Böttner M, Wedel T, Jürgensen C, Hampe J, Schäfer H, Zeissig S, Schreiber S, Rosenstiel P, Reiss K, Arlt A. IL-1β and ADAM17 are central regulators of β-defensin expression in Candida esophagitis. Am J Physiol Gastrointest Liver Physiol 2011; 300:G547-53. [PMID: 21233274 DOI: 10.1152/ajpgi.00251.2010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Candida albicans resides on epithelial surfaces as part of the physiological microflora. However, under certain conditions, it may cause life-threatening infections, including Candida sepsis. We have recently shown that human β-defensins (hBDs) hBD-2 and hBD-3 are upregulated in Candida esophagitis and that this antifungal host response is distinctly regulated by NF-κB and MAPK/activator protein-1 (AP-1) pathways. Here, we show that C. albicans induces hBD-2 through an autocrine IL-1β loop and that activation of the epidermal growth factor receptor (EGFR) by endogenous transforming growth factor-α (TGF-α) is a crucial event in the induction of hBD-3. To further dissect upstream signaling events, we investigated expression of the central sheddases for EGFR ligands ADAM10 and ADAM17 in the healthy and infected esophagus. Next, we used pharmaceutical inhibitors and small-interfering RNA-mediated knock down of ADAM10 and ADAM17 to reveal that ADAM17-induced shedding of TGF-α is a crucial step in the induction of hBD-3 expression in response to Candida infection. In conclusion, we describe for the first time an autocrine IL-1β loop responsible for the induction of hBD-2 expression and an ADAM17-TGF-α-EGFR-MAPK/AP-1 pathway leading to hBD-3 upregulation in the course of a Candida infection of the esophagus.
Collapse
Affiliation(s)
- Rene Pahl
- Department of Internal Medicine I, University of Kiel, Germany University Hospital Schleswig-Holstein, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|