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Castro-Rodriguez JA, Turi KN, Forno E. A critical analysis of the effect of OM-85 for the prevention of recurrent respiratory tract infections or wheezing/asthma from systematic reviews with meta-analysis. Pediatr Allergy Immunol 2024; 35:e14186. [PMID: 39016384 PMCID: PMC11296687 DOI: 10.1111/pai.14186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 06/15/2024] [Accepted: 06/20/2024] [Indexed: 07/18/2024]
Abstract
Acute respiratory tract infections (RTIs) are one of the most common causes of pediatric consultations/hospitalizations and a major trigger for asthma exacerbations. Some consensus statements have recommended the use of immunostimulants to boost natural defenses against severe or repeated infections. One of the most common immunostimulants is OM-85; while several randomized clinical trials (RCTs) have evaluated its efficacy in preventing acute RTIs and wheezing/asthma exacerbations, results have been conflicting. Similarly, various systematic reviews with meta-analyses (SRMs) on OM-85 have used different strategies, populations, and outcomes; moreover, SRM conclusions are limited when the original studies are highly heterogeneous or have a low quality, hindering the generalizability of the findings. Here we summarize the evidence on the effect of OM-85 to prevent acute RTIs, wheezing/asthma episodes, or loss of asthma control in children, by including and critically evaluating all SRMs published to date. We searched for SRMs on OM-85 in three publication databases and found nine SRMs (seven for RTI, and two for wheezing/asthma). Among those, one had a high confidence evaluation of quality (AMSTAR-2 tool) and found a reduction in the total number of acute RTIs among the OM-85 group. Overall, no strong recommendations can be derived from the existing literature, mainly due to the high heterogeneity among included RCTs and SRMs. Further, large, high-quality RCTs are needed to confirm the true efficacy of OM-85 for the prevention of acute RTIs, asthma development, and asthma exacerbations.
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Affiliation(s)
- Jose A Castro-Rodriguez
- Department of Pediatric Pulmonology, School of Medicine, Pontificia Universidad Católica De Chile, Santiago, Chile
| | - Kedir N Turi
- Department of Epidemiology and Biostatistics, School of Public Health, Indiana University, Bloomington, Indiana, USA
| | - Erick Forno
- Pulmonary, Allergy/Immunology, and Sleep Medicine, Riley Hospital for Children, Indiana University School of Medicine, Indianapolis, Indiana, USA
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2
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Herman K, Brough HA, Pier J, Venter C, Järvinen KM. Prevention of IgE-Mediated Food Allergy: Emerging Strategies Through Maternal and Neonatal Interventions. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2024; 12:1686-1694. [PMID: 38677585 DOI: 10.1016/j.jaip.2024.04.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 04/29/2024]
Abstract
Whereas the early introduction of highly allergenic foods has been shown to be effective at preventing the onset of food allergy (FA) in high-risk infants, sensitization to food antigens can occur prior to complementary food introduction, and thus, additional earlier FA prevention strategies are urgently needed. Currently, aside from early introduction of peanut and egg, no therapies are strongly recommended by international professional allergy societies for the primary prevention of FA. This review focuses on maternal- and neonatal-directed interventions that are being actively investigated and developed, including maternal dietary factors and supplementation, specific elimination diets, breastfeeding, cow's milk formula supplementation, microbiome manipulations, bacterial lysate therapy, and skin barrier therapies. Evaluating how these factors and various prenatal/early life environmental exposures may impact the development of FA is crucial for accurately counseling caregivers in the prevention of FA.
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Affiliation(s)
- Katherine Herman
- Department of Pediatrics, Division of Pediatric Allergy and Immunology, Center for Food Allergy, University of Rochester Medical Center, Rochester, NY
| | - Helen A Brough
- Evelina London Children's Hospital, Guy's and St. Thomas' NHS Foundation Trust, Children's Allergy Service. King's College London, Pediatric Allergy Group, Department of Women and Children's Health, School of Life Course Sciences, London, UK
| | - Jennifer Pier
- Department of Pediatrics, Division of Pediatric Allergy and Immunology, Center for Food Allergy, University of Rochester Medical Center, Rochester, NY
| | - Carina Venter
- Section of Pediatric Allergy and Immunology, Children's Hospital Colorado/University of Colorado, Denver, Colo
| | - Kirsi M Järvinen
- Department of Pediatrics, Division of Pediatric Allergy and Immunology, Center for Food Allergy, University of Rochester Medical Center, Rochester, NY.
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3
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Rahman MM, Grice ID, Ulett GC, Wei MQ. Advances in Bacterial Lysate Immunotherapy for Infectious Diseases and Cancer. J Immunol Res 2024; 2024:4312908. [PMID: 38962577 PMCID: PMC11221958 DOI: 10.1155/2024/4312908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 04/22/2024] [Accepted: 04/26/2024] [Indexed: 07/05/2024] Open
Abstract
Antigenic cell fragments, pathogen-associated molecular patterns, and other immunostimulants in bacterial lysates or extracts may induce local and systemic immune responses in specific and nonspecific paradigms. Based on current knowledge, this review aimed to determine whether bacterial lysate has comparable functions in infectious diseases and cancer treatment. In infectious diseases, including respiratory and urinary tract infections, immune system activation by bacterial lysate can identify and combat pathogens. Commercially available bacterial lysates, including OM-85, Ismigen, Lantigen B, and LW 50020, were effective in children and adults in treating respiratory tract infections, chronic obstructive pulmonary disease, rhinitis, and rhinosinusitis with varying degrees of success. Moreover, OM-89, Uromune, Urovac, Urivac, and ExPEC4V showed therapeutic benefits in controlling urinary tract infections in adults, especially women. Bacterial lysate-based therapeutics are safe, well-tolerated, and have few side effects, making them a good alternative for infectious disease management. Furthermore, a nonspecific immunomodulation by bacterial lysates may stimulate innate immunity, benefiting cancer treatment. "Coley's vaccine" has been used to treat sarcomas, carcinomas, lymphomas, melanomas, and myelomas with varying outcomes. Later, several similar bacterial lysate-based therapeutics have been developed to treat cancers, including bladder cancer, non-small cell lung cancer, and myeloma; among them, BCG for in situ bladder cancer is well-known. Proinflammatory cytokines, including IL-1, IL-6, IL-12, and TNF-α, may activate bacterial antigen-specific adaptive responses that could restore tumor antigen recognition and response by tumor-specific type 1 helper cells and cytotoxic T cells; therefore, bacterial lysates are worth investigating as a vaccination adjuvants or add-on therapies for several cancers.
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Affiliation(s)
- Md. Mijanur Rahman
- School of Pharmacy and Medical SciencesGriffith University, Gold Coast 4222, QLD, Australia
- Menzies Health Institute QueenslandGriffith University, Gold Coast 4222, QLD, Australia
| | - I. Darren Grice
- School of Pharmacy and Medical SciencesGriffith University, Gold Coast 4222, QLD, Australia
- Institute for GlycomicsGriffith University, Gold Coast 4222, QLD, Australia
| | - Glen C. Ulett
- School of Pharmacy and Medical SciencesGriffith University, Gold Coast 4222, QLD, Australia
- Menzies Health Institute QueenslandGriffith University, Gold Coast 4222, QLD, Australia
| | - Ming Q. Wei
- School of Pharmacy and Medical SciencesGriffith University, Gold Coast 4222, QLD, Australia
- Menzies Health Institute QueenslandGriffith University, Gold Coast 4222, QLD, Australia
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Go N, Arsène S, Faddeenkov I, Galland T, Martis B S, Lefaudeux D, Wang Y, Etheve L, Jacob E, Monteiro C, Bosley J, Sansone C, Pasquali C, Lehr L, Kulesza A. A quantitative systems pharmacology workflow toward optimal design and biomarker stratification of atopic dermatitis clinical trials. J Allergy Clin Immunol 2024; 153:1330-1343. [PMID: 38369029 DOI: 10.1016/j.jaci.2023.12.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 11/03/2023] [Accepted: 12/22/2023] [Indexed: 02/20/2024]
Abstract
BACKGROUND The development of atopic dermatitis (AD) drugs is challenged by many disease phenotypes and trial design options, which are hard to explore experimentally. OBJECTIVE We aimed to optimize AD trial design using simulations. METHODS We constructed a quantitative systems pharmacology model of AD and standard of care (SoC) treatments and generated a phenotypically diverse virtual population whose parameter distribution was derived from known relationships between AD biomarkers and disease severity and calibrated using disease severity evolution under SoC regimens. RESULTS We applied this workflow to the immunomodulator OM-85, currently being investigated for its potential use in AD, and calibrated the investigational treatment model with the efficacy profile of an existing trial (thereby enriching it with plausible marker levels and dynamics). We assessed the sensitivity of trial outcomes to trial protocol and found that for this particular example the choice of end point is more important than the choice of dosing regimen and patient selection by model-based responder enrichment could increase the expected effect size. A global sensitivity analysis revealed that only a limited subset of baseline biomarkers is needed to predict the drug response of the full virtual population. CONCLUSIONS This AD quantitative systems pharmacology workflow built around knowledge of marker-severity relationships as well as SoC efficacy can be tailored to specific development cases to optimize several trial protocol parameters and biomarker stratification and therefore has promise to become a powerful model-informed AD drug development and personalized medicine tool.
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Yoon KN, Lee SJ, Keum GB, Song KY, Park JH, Song BS, Yu SY, Cho JH, Kim ES, Doo H, Kwak J, Kim S, Eun JB, Lee JH, Kim HB, Lee JH, Kim JK. Characteristics of Lactococcus petauri GB97 lysate isolated from porcine feces and its in vitro and in vivo effects on inflammation, intestinal barrier function, and gut microbiota composition in mice. Microbiol Spectr 2024; 12:e0133423. [PMID: 38019021 PMCID: PMC10782967 DOI: 10.1128/spectrum.01334-23] [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: 03/28/2023] [Accepted: 10/06/2023] [Indexed: 11/30/2023] Open
Abstract
IMPORTANCE Weaning is a crucial step in piglet management to improve pork production. During the weaning phase, disruption of epithelial barrier function and intestinal inflammation can lead to decreased absorption of nutrients and diarrhea. Therefore, maintaining a healthy intestine, epithelial barrier function, and gut microbiota composition in this crucial phase is strategic for optimal weaning in pigs. We isolated a lysate of Lactococcus petauri GB97 (LPL97) from healthy porcine feces and evaluated its anti-inflammatory activities, barrier integrity, and gut microbial changes in LPS-induced murine macrophages and DSS-induced colitis mice. We found that LPL97 regulated the immune response by downregulating the TLR4/NF-κB/MAPK signaling pathway both in vitro and in vivo. Furthermore, LPL97 alleviated the disruption of intestinal epithelial integrity and gut microbiota dysbiosis in colitis mice. This study indicates that LPL97 has the potential to be developed as an alternative feed additive to antibiotics for the swine industry.
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Affiliation(s)
- Ki-Nam Yoon
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, South Korea
- Department of Food Science and Technology, Graduate School of Chonnam National University, Gwangju, South Korea
| | - Soo-Jeong Lee
- Department of Food and Animal Biotechnology, Seoul National University, Seoul, South Korea
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
- Center for Food and Bioconvergence, Seoul National University, Seoul, South Korea
| | - Gi Beom Keum
- Department of Animal Resources Science, Dankook University, Cheonan, South Korea
| | - Ki-Young Song
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, South Korea
| | - Jong-Heum Park
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, South Korea
| | - Beom-Seok Song
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, South Korea
| | - Seung Yeob Yu
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, South Korea
| | - Jae Hyoung Cho
- Department of Animal Resources Science, Dankook University, Cheonan, South Korea
| | - Eun Sol Kim
- Department of Animal Resources Science, Dankook University, Cheonan, South Korea
| | - Hyunok Doo
- Department of Animal Resources Science, Dankook University, Cheonan, South Korea
| | - Jinok Kwak
- Department of Animal Resources Science, Dankook University, Cheonan, South Korea
| | - Sheena Kim
- Department of Animal Resources Science, Dankook University, Cheonan, South Korea
| | - Jong-Bang Eun
- Department of Food Science and Technology, Graduate School of Chonnam National University, Gwangju, South Korea
| | - Ju Huck Lee
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, South Korea
| | - Hyeun Bum Kim
- Department of Animal Resources Science, Dankook University, Cheonan, South Korea
| | - Ju-Hoon Lee
- Department of Food and Animal Biotechnology, Seoul National University, Seoul, South Korea
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
- Center for Food and Bioconvergence, Seoul National University, Seoul, South Korea
| | - Jae-Kyung Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, South Korea
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Vinderola G, Sanders ME, Cunningham M, Hill C. Frequently asked questions about the ISAPP postbiotic definition. Front Microbiol 2024; 14:1324565. [PMID: 38268705 PMCID: PMC10807003 DOI: 10.3389/fmicb.2023.1324565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 11/28/2023] [Indexed: 01/26/2024] Open
Abstract
The term postbiotic was defined by the International Scientific Association of Probiotics and Prebiotics (ISAPP) as "a preparation of inanimate microorganisms and/or their components that confers a health benefit on the host." Although the ISAPP definition is widely cited, some concerns were aired after publication, and alternative definitions of postbiotic, as well as different terms for inactivated microbes, have been previously suggested. This paper addresses questions about the ISAPP definition that have been raised in different forums, including scientific meetings, social media commentary and personal communications. We focus on the rationale, scope, wording, composition and commercial implementation, as well as what is expected of postbiotics regarding safety, efficacy, quantification and mechanisms of action. We hope that exploring these questions will further clarify the definition and its scope and support a common understanding of the concept of postbiotics.
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Affiliation(s)
- Gabriel Vinderola
- Instituto de Lactología Industrial (CONICET-UNL), Faculty of Chemical Engineering, National University of Litoral, Santa Fe, Argentina
| | - Mary Ellen Sanders
- International Scientific Association for Probiotics and Prebiotics, Centennial, CO, United States
| | - Marla Cunningham
- International Scientific Association for Probiotics and Prebiotics, Brisbane, QLD, Australia
| | - Colin Hill
- APC Microbiome Ireland, University College Cork, Cork, Ireland
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Lee SH, Kim HJ, Lee SY, Hong SJ. Broncho-Vaxom bacterial lysate prevents asthma via acetate enhancement in mouse model. Pediatr Allergy Immunol 2023; 34:e14018. [PMID: 37747743 DOI: 10.1111/pai.14018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 08/02/2023] [Accepted: 08/07/2023] [Indexed: 09/26/2023]
Abstract
PURPOSE Broncho-Vaxom (BV) is known to attenuate allergic airway inflammation and chronic bronchitis in humans, but the underlying mechanism of this gut-mediated immunity remains unclear. This study investigated the effects of an oral BV on gut and systemic short-chain fatty acids (SCFAs) and immune responses. METHODS Oral BV was administered daily for 15 days prior to commencing the study in an asthma mouse model. Asthma was induced by ovalbumin (OVA) sensitization followed by a challenge with 1% OVA by inhalation. Asthmatic phenotypes, gut- and systemic- immune responses, and SCFAs in the cecum and blood were then investigated. RESULTS Airway hyperresponsiveness, total immunoglobulin E production, and pulmonary inflammation were all significantly suppressed by BV. The interleukin-13 level was also suppressed, whereas TGF-β expression was increased, in the lungs of the BV-treated mice. The regulatory T (Treg) cell numbers were increased in the small intestine, and the acetate level was increased in the cecum and serum after BV treatment. The levels of acetate in the cecum and serum were negatively correlated with airway hyperresponsiveness and with the eosinophil numbers in the BAL fluid of the OVA-induced mice. There was a positive correlation between the acetate levels in the feces and serum and the lung expression of TGF-β in the asthma mice. CONCLUSIONS Oral BV administration appears to prevent allergic inflammation by enhancing Treg cell proliferation and acetate production in an asthmatic mouse model.
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Affiliation(s)
- Seung-Hwa Lee
- Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, South Korea
| | - Ha-Jung Kim
- Department of Internal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, South Korea
| | - So-Yeon Lee
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Soo-Jong Hong
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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Han X, He X, Zhan X, Yao L, Sun Z, Gao X, Wang S, Wang Z. Disturbed microbiota-metabolites-immune interaction network is associated with olfactory dysfunction in patients with chronic rhinosinusitis. Front Immunol 2023; 14:1159112. [PMID: 37292198 PMCID: PMC10245275 DOI: 10.3389/fimmu.2023.1159112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 05/05/2023] [Indexed: 06/10/2023] Open
Abstract
Purpose Olfactory dysfunction (OD) is a debilitating symptom frequently reported by patients with chronic rhinosinusitis (CRS) and it is associated with a dysregulated sinonasal inflammation. However, little information is available about the effect of the inflammation-related nasal microbiota and related metabolites on the olfactory function in these patients. Therefore, the current study aimed to investigate the nasal microbiota-metabolites-immune interactions and their role in the pathogenesis of OD in CRS patients. Methods 23 and 19 CRS patients with and without OD, respectively, were enrolled in the present study. The "Sniffin' Sticks" was used to measure the olfactory function, while the metagenomic shotgun sequencing and the untargeted metabolite profiling were performed to assess the differences in terms of the nasal microbiome and metabolome between the two groups. The levels of nasal mucus inflammatory mediators were investigated by a multiplex flow Cytometric Bead Array (CBA). Results A decreased diversity in the nasal microbiome from the OD group compared to the NOD group was evidenced. The metagenomic analysis revealed a significant enrichment of Acinetobacter johnsonii in the OD group, while Mycoplasma arginini, Aeromonas dhakensis, and Salmonella enterica were significantly less represented (LDA value > 3, p < 0.05). The nasal metabolome profiles were significantly different between the OD and NOD groups (P < 0.05). The purine metabolism was the most significantly enriched metabolic subpathway in OD patients compared with NOD patients (P < 0.001). The expressions of IL-5, IL-8, MIP-1α, MCP-1, and TNF were statistically and significantly increased in the OD group (P < 0.05). All these data, including the dysregulation of the nasal microbiota, differential metabolites, and elevated inflammatory mediators in OD patients demonstrated a clear interaction relationship. Conclusion The disturbed nasal microbiota-metabolite-immune interaction networks may be implicated in the pathogenesis of OD in CRS patients and the underlying pathophysiological mechanisms need to be further investigated in future studies.
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Affiliation(s)
- Xingyu Han
- Department of Otolaryngology-Head and Neck Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- Department of Otolaryngology-Head and Neck Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
- Department of Otorhinolaryngology-Head and Neck Surgery, Capital Institute of Pediatrics, Beijing, China
| | - Xuejia He
- Capital Institute of Pediatrics, Peking University Teaching Hospital, Beijing, China
| | - Xiaojun Zhan
- Department of Otorhinolaryngology-Head and Neck Surgery, Capital Institute of Pediatrics, Beijing, China
| | - Linyin Yao
- Department of Otolaryngology-Head and Neck Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Zhifu Sun
- Department of Otolaryngology-Head and Neck Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xing Gao
- Department of Otorhinolaryngology-Head and Neck Surgery, Capital Institute of Pediatrics, Beijing, China
| | - Shan Wang
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
| | - Zhenlin Wang
- Department of Otolaryngology-Head and Neck Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
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Ghambashidze K, Chikhladze R, Saladze T, Hoopes PJ, Shubitidze F. E. coli Phagelysate: A Primer to Enhance Nanoparticles and Drug Deliveries in Tumor. Cancers (Basel) 2023; 15:cancers15082315. [PMID: 37190243 DOI: 10.3390/cancers15082315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/05/2023] [Accepted: 04/12/2023] [Indexed: 05/17/2023] Open
Abstract
The tumor microenvironment (TME), where cancer cells reside, plays a crucial role in cancer progression and metastasis. It maintains an immunosuppressive state in many tumors and regulates the differentiation of precursor monocytes into M1 (anti-tumor)- and M2 (pro-tumor)-polarized macrophages, and greatly reduces anticancer drug and nanoparticle delivery. As a result, the effectiveness of recently developed chemo- and/or nanotechnology-mediated immune and magnetic nanoparticle hyperthermia (mNPH) therapies is inhibited significantly. One of the ways to overcome this limitation is to use E. coli phagelysate as a primer to modify the tumor microenvironment by switching tumor-associated M2 macrophages to anti-tumor M1 macrophages, and initiate the infiltration of tumor-associated macrophages (TAMs). Recently, bacteriophages and phage-induced lysed bacteria (bacterial phagelysates-BPLs) have been shown to be capable of modifying the tumor-associated environment. Phage/BPL-coated proteins tend to elicit strong anti-tumor responses from the innate immune system, prompting phagocytosis and cytokine release. It has also been reported that the microenvironments of bacteriophage- and BPL-treated tumors facilitate the conversion of M2-polarized TAMS to a more M1-polarized (tumoricidal) environment post-phage treatment. This paper demonstrates the feasibility and enhanced efficacy of combining E. coli phagelysate (EcPHL) and mNPH, a promising technology for treating cancers, in a rodent model. Specifically, we illustrate the EcPHL vaccination effect on the TME and mNP distribution in Ehrlich adenocarcinoma tumors by providing the tumor growth dynamics and histology (H&E and Prussian blue) distribution of mNP in tumor and normal tissue.
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Affiliation(s)
- Ketevan Ghambashidze
- Department of Pathophysiology, Tbilisi State Medical University, Tbilisi 0177, Georgia
| | - Ramaz Chikhladze
- Department of Anatomic Pathology, Tbilisi State Medical University, Tbilisi 0177, Georgia
| | - Tamar Saladze
- Department of Anatomic Pathology, Tbilisi State Medical University, Tbilisi 0177, Georgia
| | - P Jack Hoopes
- Geisel School of Medicine at Dartmouth College, Hanover, NH 03755, USA
- Thayer School of Engineering at Dartmouth College, Hanover, NH 03755, USA
| | - Fridon Shubitidze
- Geisel School of Medicine at Dartmouth College, Hanover, NH 03755, USA
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10
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Du M, Xu S, Qiu B, Hu S, Tjakkes GHE, Li A, Ge S. Serum antibodies to periodontal pathogens are related to allergic symptoms. J Periodontol 2023; 94:204-216. [PMID: 35960608 DOI: 10.1002/jper.22-0346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/02/2022] [Accepted: 08/02/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND The association between periodontitis and allergic symptoms has been investigated. However, the difference in immune signatures between them remains poorly understood. This cross-sectional study assessed the relationship between serum immunoglobulin G (IgG) antibodies to periodontal pathogens and allergic symptoms in a nationwide population cohort. METHODS Two phases of the Third National Health and Nutrition Examination Survey (NHANES III) were used as discovery dataset (n = 3700) and validation dataset (n = 4453), respectively. Based on the antibodies against 19 periodontal pathogens, we performed an unsupervised hierarchical clustering to categorize the population into three clusters. In the discovery dataset, cluster 1 (n = 2847) had the highest level of IgG antibodies, followed by clusters 2 (n = 588) and 3 (n = 265). Data on allergic symptoms (asthma, hay fever, and wheezing) were obtained using a self-reported questionnaire. Survey-weighted multivariable logistic regression evaluated the association between these clusters and allergic symptoms. RESULTS In the discovery dataset, the participants with lower levels of antibodies to periodontal pathogens exhibited a higher risk of asthma (odds ratio [OR]cluster 3 vs. cluster 1 = 1.820, 95% confidence interval [CI]: 1.153-2.873) and wheezing (ORcluster 3 vs. cluster 1 = 1.550, 95% CI: 1.095-2.194) compared to those with higher periodontal antibodies, but the non-significant association with hay fever. Consistent results were found in the validation dataset. CONCLUSIONS Serum IgG titers to periodontal pathogens were inversely associated with the risk of asthma and wheezing, suggesting the potentially protective role against allergic conditions.
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Affiliation(s)
- Mi Du
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration, Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Shulan Xu
- Center of Oral Implantology, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Bingjiang Qiu
- Department of Radiology & Guangdong Cardiovascular Institute & Guangdong Provincial Key Laboratory of Artificial Intelligence in Medical Image Analysis and Application, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Data Science Center in Health (DASH) & 3D Lab, University Medical Center Groningen (UMCG), University of Groningen, Groningen, The Netherlands
| | - Shixian Hu
- Institute of Precision Medicine, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China.,Department of Gastroenterology and Hepatology, UMCG, University of Groningen, Groningen, The Netherlands
| | - Geerten-Has E Tjakkes
- Department of Periodontology, Center for Dentistry and Oral Hygiene, UMCG, University of Groningen, Groningen, The Netherlands
| | - An Li
- Center of Oral Implantology, Stomatological Hospital, Southern Medical University, Guangzhou, China.,Department of Periodontology, Center for Dentistry and Oral Hygiene, UMCG, University of Groningen, Groningen, The Netherlands
| | - Shaohua Ge
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration, Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
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11
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Janeczek K, Kowalska W, Zarobkiewicz M, Suszczyk D, Mikołajczyk M, Markut-Miotła E, Morawska-Michalska I, Bakiera A, Tomczak A, Kaczyńska A, Emeryk A, Roliński J, Piotrowska-Weryszko K. Effect of immunostimulation with bacterial lysate on the clinical course of allergic rhinitis and the level of γδT, iNKT and cytotoxic T cells in children sensitized to grass pollen allergens: A randomized controlled trial. Front Immunol 2023; 14:1073788. [PMID: 36733480 PMCID: PMC9887322 DOI: 10.3389/fimmu.2023.1073788] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/03/2023] [Indexed: 01/18/2023] Open
Abstract
Background There are many drugs for allergic rhinitis (AR), however, these drugs show variable clinical effectiveness and some side effects. Therefore, new methods of AR pharmacotherapy are being sought. Objectives The objectives of this study were to evaluate the efficacy of polyvalent mechanical bacterial lysate (PMBL) therapy in improving the clinical course of grass pollen-induced AR (seasonal AR, SAR) in children and its effect on changes in the blood level of the γδT, iNKT and cytotoxic T cell subsets. Methods Fifty children with SAR were enrolled in this study and were randomly assigned to either the PMBL group or the placebo group. The severity of SAR symptoms was assessed using the total nasal symptom score (TNSS) and visual analogue scale (VAS). During two visits (V1, V2), peak nasal inspiratory flow (PNIF) was measured and peripheral blood was collected for immunological analyses. The study also included 2 telephone contacts (TC1, TC2). Results The severity of the nasal symptoms of SAR on the TNSS scale was revealed to have a significantly lower impact in the PMBL group vs the placebo group at measuring points TC1 and V2 (p = 0.01, p = 0.009, respectively). A statistically significantly lower mean severity of nasal symptoms of SAR on the VAS scale was recorded for children in the PMBL group compared to the placebo group at measuring points TC1, V2 and TC2 (p = 0.04, p = 0.04, p = 0.03, respectively). The compared groups do not show significant differences in terms of PNIF values at individual measuring points. There were no statistically significant changes in immune variables. For both groups, there was a statistically significant association between the level of Th1-like γδT cells and the severity of SAR symptoms expressed on the TNSS scale (p = 0.03) - the lower the level of Th1-like γδT cells, the higher the TNSS value. Conclusion Administration of sublingual PMBL tablets during the grass pollen season proves to have a high efficacy in alleviating SAR symptoms in children sensitized to grass pollen allergens. Th1-like γδT cells may be used as potential markers for SAR severity in children. Clinical trial registration ClinicalTrials.gov, identifier (NCT04802616).
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Affiliation(s)
- Kamil Janeczek
- Department of Pulmonary Diseases and Children Rheumatology, Medical University of Lublin, Lublin, Poland
| | - Wioleta Kowalska
- Department of Clinical Immunology, Medical University of Lublin, Lublin, Poland
| | - Michał Zarobkiewicz
- Department of Clinical Immunology, Medical University of Lublin, Lublin, Poland
| | - Dorota Suszczyk
- Independent Laboratory of Cancer Diagnostics and Immunology, Medical University of Lublin, Lublin, Poland
| | - Marek Mikołajczyk
- Department of Allergology, Voivodeship Rehabilitation Hospital for Children in Ameryka, Olsztynek, Poland
| | - Ewa Markut-Miotła
- Department of Pulmonary Diseases and Children Rheumatology, Medical University of Lublin, Lublin, Poland
| | | | - Adrian Bakiera
- Department of Clinical Immunology, Medical University of Lublin, Lublin, Poland
| | - Aleksandra Tomczak
- Department of Clinical Immunology, Medical University of Lublin, Lublin, Poland
| | - Agnieszka Kaczyńska
- Department of Pulmonary Diseases and Children Rheumatology, Medical University of Lublin, Lublin, Poland
| | - Andrzej Emeryk
- Department of Pulmonary Diseases and Children Rheumatology, Medical University of Lublin, Lublin, Poland
| | - Jacek Roliński
- Department of Clinical Immunology, Medical University of Lublin, Lublin, Poland
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Tang L, Gao J, Li X, Cao X, Zhou B. Molecular Mechanisms of Luteolin Against Atopic Dermatitis Based on Network Pharmacology and in vivo Experimental Validation. Drug Des Devel Ther 2022; 16:4205-4221. [PMID: 36530790 PMCID: PMC9748122 DOI: 10.2147/dddt.s387893] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 11/26/2022] [Indexed: 08/03/2023] Open
Abstract
PURPOSE To undercover the underlying mechanisms of luteolin against atopic dermatitis (AD), clinically characterized by recurrent eczematous lesions and intense itching, based on network pharmacology, molecular docking and in vivo experimental validation. METHODS TCMSP, STITCH and SwissTargetPrediction databases were utilized to screen the corresponding targets of luteolin. Targets related to AD were collected from DisGeNET, GeneCards and TTD databases. PPI network of intersection targets was constructed through STRING 11.0 database and Cytoscape 3.9.0 software. GO and KEGG enrichment analysis were performed to investigate the critical pathways of luteolin against AD. Further, the therapeutic effects and candidate targets/signaling pathways predicted from network pharmacology analysis were experimentally validated in a mouse model of AD induced by 2, 4-dinitrofluorobenzene (DNFB). RESULTS A total of 31 intersection targets were obtained by matching 151 targets of luteolin with 553 targets of AD. Among all, 20 core targets were identified by PPI network topology analysis, including IL-6, TNF, IL-10, VEGFA, IL-4, etc., and molecular docking indicated that luteolin binds strongly to these core targets. KEGG pathway enrichment analysis suggested that the intersected targets were significantly enriched in IL-17 signaling pathway, Th17 cell differentiation, Th1 and Th2 cell differentiation, JAK/STAT signaling pathway, etc. The in vivo experiment validated that luteolin could alleviate AD-like skin symptoms, as evidenced by the lower SCORAD score, the reduced infiltration of mast cells and the recovery of skin barrier function. Furthermore, luteolin restored immune balance by regulating the production of Th1/Th2/Th17-mediated cytokines, which were both the predicted core targets. Moreover, luteolin inhibited the phosphorylation of JAK2 and STAT3 in the lesional skin. CONCLUSION Together, the present study systematically clarifies the ameliorative effects and possible molecular mechanisms of luteolin against AD through the combination of network pharmacology and experimental validation, shedding light on the future development and clinical application of luteolin.
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Affiliation(s)
- Liu Tang
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, People’s Republic of China
| | - Jiefang Gao
- School of Pharmaceutical Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Xiaolei Li
- School of Pharmaceutical Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Xiaoqin Cao
- School of Medicine, Jianghan University, Wuhan, People’s Republic of China
| | - Benhong Zhou
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, People’s Republic of China
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The Crosstalk between the Gut Microbiota Composition and the Clinical Course of Allergic Rhinitis: The Use of Probiotics, Prebiotics and Bacterial Lysates in the Treatment of Allergic Rhinitis. Nutrients 2022; 14:nu14204328. [PMID: 36297012 PMCID: PMC9607052 DOI: 10.3390/nu14204328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/12/2022] [Accepted: 10/14/2022] [Indexed: 11/26/2022] Open
Abstract
Although massive progress in discovering allergic rhinitis (AR) aetiology has been made in recent years, its prevalence is still rising and it significantly impacts patients' lives. That is why further and non-conventional research elucidating the role of new factors in AR pathogenesis is needed, facilitating discoveries of new treatment approaches. One of these factors is the gut microbiota, with its specific roles in health and disease. This review presents the process of gut microbiota development, especially in early life, focusing on its impact on the immune system. It emphasizes the link between the gut microbiota composition and immune changes involved in AR development. Specifically, it elucidates the significant link between bacteria colonizing the gut and the Th1/Th2 imbalance. Probiotics, prebiotics and bacterial lysates, which are medications that restore the composition of intestinal bacteria and indirectly affect the clinical course of AR, are also discussed.
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14
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Binns E, Tuckerman J, Licciardi PV, Wurzel D. Respiratory syncytial virus, recurrent wheeze and asthma: A narrative review of pathophysiology, prevention and future directions. J Paediatr Child Health 2022; 58:1741-1746. [PMID: 36073299 PMCID: PMC9826513 DOI: 10.1111/jpc.16197] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 08/19/2022] [Accepted: 08/21/2022] [Indexed: 01/11/2023]
Abstract
Globally, respiratory syncytial virus (RSV) is the leading cause of bronchiolitis and pneumonia in young children, and the association between severe RSV disease and later recurrent wheeze and asthma is well established. Whilst a causal link between RSV and wheeze/asthma is not yet proven, immunological evidence suggests skewing towards a Th2-type response, and dampening of IFN-γ antiviral immunity during RSV infection underpins airway hyper-reactivity in a subset of susceptible children after RSV infection. Age at primary RSV infection, viral co-infection and genetic influences may act as effect-modifiers. Despite the significant morbidity and mortality burden of RSV disease in children, there is currently no licensed vaccine. Recent advancements in RSV preventatives, including long-acting monoclonal antibodies and maternal vaccinations, show significant promise and we are on the cusp of a new era in RSV prevention. However, the potential impact of RSV preventatives on subsequent wheeze and asthma remains unclear. The ongoing COVID-19 pandemic and associated public health measures have disrupted the usual seasonality of RSV. Whilst this has posed challenges for health-care services it has also enhanced our understanding of RSV transmission. The near absence of RSV cases during the first year of the pandemic in the context of strict public health measures has provided a rare opportunity to study the impact of delayed age of primary RSV infection on asthma prevalence. In this review, we summarise current understanding of the association between RSV, recurrent wheeze and asthma with a focus on pathophysiology, preventative strategies and future research priorities.
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Affiliation(s)
- Elly Binns
- Department of PaediatricsUniversity of MelbourneMelbourneVictoriaAustralia,The Royal Melbourne HospitalMelbourneVictoriaAustralia
| | - Jane Tuckerman
- Department of PaediatricsUniversity of MelbourneMelbourneVictoriaAustralia,Infection and ImmunityMurdoch Children's Research InstituteMelbourneVictoriaAustralia
| | - Paul V Licciardi
- Department of PaediatricsUniversity of MelbourneMelbourneVictoriaAustralia,Infection and ImmunityMurdoch Children's Research InstituteMelbourneVictoriaAustralia
| | - Danielle Wurzel
- Infection and ImmunityMurdoch Children's Research InstituteMelbourneVictoriaAustralia,School of Population and Global HealthUniversity of MelbourneMelbourneVictoriaAustralia,Department of Respiratory MedicineRoyal Children's HospitalMelbourneVictoriaAustralia
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Anti-allergic function of the cell wall (DeinoWall) from Deinococcus radiodurans. Mol Immunol 2022; 151:103-113. [PMID: 36113363 DOI: 10.1016/j.molimm.2022.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 08/23/2022] [Accepted: 09/06/2022] [Indexed: 11/21/2022]
Abstract
Deinococcus radiodurans is an extremophile, well known to be extremely resistant to external stresses due to its unique physiological system and structure of cellular components. Although the proportion of D. radiodurans has been reported to be negatively correlated with atopic dermatitis, the exact function of D. radiodurans in allergic diseases and its precise mechanisms have not been studied. In the present study, we hypothesize that D. radiodurans or its cellular constituents play a critical role in the skin to prevent allergic inflammatory responses by modulating immunity. Heat-killed D. radiodurans inhibited the production of Th2 cytokines, such as IL-4 and IL-5, induced by ovalbumin (OVA) stimulation in splenocytes from OVA-sensitized mice. Among the cellular constituents of D. radiodurans, such as cell wall (DeinoWall), cell membrane (DeinoMem), and exopolysaccharide (DeinoPol), only DeinoWall inhibited the production of Th2 cytokines and 2,4-dinitrochlorobenzene (DNCB)-induced atopic dermatitis (AD), a Th2-predominant allergic disease in mice. Moreover, serum IgE levels and infiltration of mast cells into skin lesions, the markers of Th2 response induced by DNCB application, were significantly inhibited by treatment with DeinoWall. Remarkably, DeinoWall induced the maturation of bone marrow-derived dendritic cells (BMDCs) that promote Th1-biased immunity, which might balance Th1/Th2 and regulate allergic inflammatory responses. Collectively, these results suggest that DeinoWall acts as a major cellular constituent in the negative regulation of allergic inflammatory responses by D. radiodurans and might be a viable candidate for the treatment of allergic diseases.
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