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Hanlon N, Gillan N, Neil J, Seidler K. The role of the aryl hydrocarbon receptor (AhR) in modulating intestinal ILC3s to optimise gut pathogen resistance in lupus and benefits of nutritional AhR ligands. Clin Nutr 2024; 43:1199-1215. [PMID: 38631087 DOI: 10.1016/j.clnu.2024.04.008] [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: 09/18/2023] [Revised: 03/28/2024] [Accepted: 04/04/2024] [Indexed: 04/19/2024]
Abstract
BACKGROUND AND AIMS Dysbiosis is emerging as a potential trigger of systemic lupus erythematosus (SLE). Group 3 innate lymphoid cells (ILC3s) are recognised as key regulators of intestinal homeostasis. The aryl hydrocarbon receptor (AhR) is critical to intestinal ILC3 development and function. This mechanistic review aimed to investigate whether AhR activation of gut ILC3s facilitates IL-22-mediated antimicrobial peptide (AMP) production to enhance colonisation resistance and ameliorate SLE pathology associated with intestinal dysbiosis. Furthermore, nutritional AhR ligand potential to enhance pathogen resistance was explored. METHODOLOGY This mechanistic review involved a three-tranche systematic literature search (review, mechanism, intervention) using PubMed with critical appraisal. Data was synthesised into themes and summarised in a narrative analysis. RESULTS Preclinical mechanistic data indicate that AhR modulation of intestinal ILC3s optimises pathogen resistance via IL-22-derived AMPs. Pre-clinical research is required to validate this mechanism in SLE. Data on systemic immune consequences of AhR modulation in lupus suggest UVB-activated ligands induce aberrant AhR signalling while many dietary ligands exert beneficial effects. Data on xenobiotic-origin ligands is varied, although considerable evidence has demonstrated negative effects on Th17 to Treg balance. Limited human evidence supports the role of nutritional AhR ligands in modulating SLE pathology. Preclinical and clinical data support anti-inflammatory effects of dietary AhR ligands. CONCLUSION Current evidence is insufficient to fully validate the hypothesis that AhR modulation of intestinal ILC3s can enhance pathogen resistance to ameliorate lupus pathology driven by dysbiosis. However, anti-inflammatory effects of dietary AhR ligands suggest a promising role as a therapeutic intervention for SLE.
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Affiliation(s)
- Niamh Hanlon
- CNELM (Centre for Nutrition Education and Lifestyle Management), 14 Rectory Road, Wokingham, Berkshire RG40 1DH, UK.
| | - Natalie Gillan
- CNELM (Centre for Nutrition Education and Lifestyle Management), 14 Rectory Road, Wokingham, Berkshire RG40 1DH, UK.
| | - James Neil
- CNELM (Centre for Nutrition Education and Lifestyle Management), 14 Rectory Road, Wokingham, Berkshire RG40 1DH, UK.
| | - Karin Seidler
- CNELM (Centre for Nutrition Education and Lifestyle Management), 14 Rectory Road, Wokingham, Berkshire RG40 1DH, UK.
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2
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Losol P, Wolska M, Wypych TP, Yao L, O'Mahony L, Sokolowska M. A cross talk between microbial metabolites and host immunity: Its relevance for allergic diseases. Clin Transl Allergy 2024; 14:e12339. [PMID: 38342758 PMCID: PMC10859320 DOI: 10.1002/clt2.12339] [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: 09/30/2023] [Revised: 01/07/2024] [Accepted: 01/22/2024] [Indexed: 02/13/2024] Open
Abstract
BACKGROUND Allergic diseases, including respiratory and food allergies, as well as allergic skin conditions have surged in prevalence in recent decades. In allergic diseases, the gut microbiome is dysbiotic, with reduced diversity of beneficial bacteria and increased abundance of potential pathogens. Research findings suggest that the microbiome, which is highly influenced by environmental and dietary factors, plays a central role in the development, progression, and severity of allergic diseases. The microbiome generates metabolites, which can regulate many of the host's cellular metabolic processes and host immune responses. AIMS AND METHODS Our goal is to provide a narrative and comprehensive literature review of the mechanisms through which microbial metabolites regulate host immune function and immune metabolism both in homeostasis and in the context of allergic diseases. RESULTS AND DISCUSSION We describe key microbial metabolites such as short-chain fatty acids, amino acids, bile acids and polyamines, elucidating their mechanisms of action, cellular targets and their roles in regulating metabolism within innate and adaptive immune cells. Furthermore, we characterize the role of bacterial metabolites in the pathogenesis of allergic diseases including allergic asthma, atopic dermatitis and food allergy. CONCLUSION Future research efforts should focus on investigating the physiological functions of microbiota-derived metabolites to help develop new diagnostic and therapeutic interventions for allergic diseases.
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Affiliation(s)
- Purevsuren Losol
- Department of Internal MedicineSeoul National University Bundang HospitalSeongnamKorea
- Department of Molecular Biology and GeneticsSchool of BiomedicineMongolian National University of Medical SciencesUlaanbaatarMongolia
| | - Magdalena Wolska
- Laboratory of Host‐Microbiota InteractionsNencki Institute of Experimental BiologyPolish Academy of SciencesWarsawPoland
| | - Tomasz P. Wypych
- Laboratory of Host‐Microbiota InteractionsNencki Institute of Experimental BiologyPolish Academy of SciencesWarsawPoland
| | - Lu Yao
- APC Microbiome IrelandUniversity College CorkCorkIreland
- Department of MedicineUniversity College CorkCorkIreland
- School of MicrobiologyUniversity College CorkCorkIreland
| | - Liam O'Mahony
- APC Microbiome IrelandUniversity College CorkCorkIreland
- Department of MedicineUniversity College CorkCorkIreland
- School of MicrobiologyUniversity College CorkCorkIreland
| | - Milena Sokolowska
- Swiss Institute of Allergy and Asthma Research (SIAF)University of ZurichDavosSwitzerland
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3
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Li S. Modulation of immunity by tryptophan microbial metabolites. Front Nutr 2023; 10:1209613. [PMID: 37521424 PMCID: PMC10382180 DOI: 10.3389/fnut.2023.1209613] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 05/30/2023] [Indexed: 08/01/2023] Open
Abstract
Tryptophan (Trp) is an essential amino acid that can be metabolized via endogenous and exogenous pathways, including the Kynurenine Pathway, the 5-Hydroxyindole Pathway (also the Serotonin pathway), and the Microbial pathway. Of these, the Microbial Trp metabolic pathways in the gut have recently been extensively studied for their production of bioactive molecules. The gut microbiota plays an important role in host metabolism and immunity, and microbial Trp metabolites can influence the development and progression of various diseases, including inflammatory, cardiovascular diseases, neurological diseases, metabolic diseases, and cancer, by mediating the body's immunity. This review briefly outlines the crosstalk between gut microorganisms and Trp metabolism in the body, starting from the three metabolic pathways of Trp. The mechanisms by which microbial Trp metabolites act on organism immunity are summarized, and the potential implications for disease prevention and treatment are highlighted.
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Ganesan K, Quiles JL, Daglia M, Xiao J, Xu B. Dietary phytochemicals modulate intestinal epithelial barrier dysfunction and autoimmune diseases. FOOD FRONTIERS 2021. [DOI: 10.1002/fft2.102] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Kumar Ganesan
- Food Science and Technology Program BNU–HKBU United International College Zhuhai China
- The School of Chinese Medicine The University of Hong Kong Hong Kong China
| | - José L. Quiles
- Institute of Nutrition and Food Technology “José Mataix Verdú,” Department of Physiology Biomedical Research Center University of Granada Granada Spain
| | - Maria Daglia
- Department of Pharmacy University of Naples Federico II Naples Italy
- International Research Center for Food Nutrition and Safety Jiangsu University Zhenjiang China
| | - Jianbo Xiao
- Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology University of Vigo Vigo Pontevedra E‐36310 Spain
| | - Baojun Xu
- Food Science and Technology Program BNU–HKBU United International College Zhuhai China
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Liu Y, Luo S, Zhan Y, Wang J, Zhao R, Li Y, Zeng J, Lu Q. Increased Expression of PPAR-γ Modulates Monocytes Into a M2-Like Phenotype in SLE Patients: An Implicative Protective Mechanism and Potential Therapeutic Strategy of Systemic Lupus Erythematosus. Front Immunol 2021; 11:579372. [PMID: 33584646 PMCID: PMC7873911 DOI: 10.3389/fimmu.2020.579372] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 11/23/2020] [Indexed: 12/02/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a spectrum of autoimmune disorders characterized by continuous inflammation and the production of autoantibodies. Monocytes, as precursors of dendritic cells and macrophages, are involved in the pathogenesis of SLE, particularly in the inflammatory reactions. Previous studies have proved that Pam3CSK4, as a synthetic ligand of TLR2, could stimulate monocytes to differentiated into a M2-like phenotype which presented immunosuppressive functions. However, the underlying mechanisms remain to be further studied. Here, we reported an increased expression of PPAR-γ in the CD14+ monocytes from SLE patients, particularly in the treated group of SLE patients and the group with positive anti-dsDNA antibodies. Additionally, PPAR-γ expression decreased in the SLE patients with skin lesion. Furthermore, we demonstrated that Pam3CSK4 stimulation can decrease the expression of CCR7, CD80, IL-1β, IL-6, IL-12, and NF-κB which were related to the M1-like subset of monocytes and increased the expression of ARG1 which was related to the M2-like subset through upregulated PPAR-γ expression and consequently downregulated NF-κB expression in the CD14+ monocytes in a time-dependent manner. ChIP-qPCR results further demonstrated that Pam3CSK4 pretreatment could modulate PPAR-γ expression by regulating histone modification through the inhibition of Sirt1 binding to the PPAR-γ promoter. Taken together, our study indicated a protective role of TLR2/Sirt1/PPAR-γ pathway in the pathogenesis of SLE which provided potential therapeutic strategies.
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Affiliation(s)
- Yu Liu
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Hunan Key Laboratory of Medical Epigenetics, Changsha, China
| | - Shuangyan Luo
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Hunan Key Laboratory of Medical Epigenetics, Changsha, China
| | - Yi Zhan
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Hunan Key Laboratory of Medical Epigenetics, Changsha, China
| | - Jiayu Wang
- Xiangya Medical School of Central South University, Changsha, China
| | - Rui Zhao
- Xiangya Medical School of Central South University, Changsha, China
| | - Yingjie Li
- Xiangya Medical School of Central South University, Changsha, China
| | - Jinrong Zeng
- Department of Dermatology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Qianjin Lu
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Hunan Key Laboratory of Medical Epigenetics, Changsha, China
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6
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Abrego-Peredo A, Romero-Ramírez H, Espinosa E, López-Herrera G, García-García F, Flores-Muñoz M, Sandoval-Montes C, Rodríguez-Alba JC. Naringenin mitigates autoimmune features in lupus-prone mice by modulation of T-cell subsets and cytokines profile. PLoS One 2020; 15:e0233138. [PMID: 32421738 PMCID: PMC7233587 DOI: 10.1371/journal.pone.0233138] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 04/28/2020] [Indexed: 11/19/2022] Open
Abstract
Naringenin is flavonoid mainly found in citrus fruits which has shown several biological properties. In this work, we evaluated the therapeutic potential of the flavonoid Naringenin. Five-month-old B6.MRL-Faslpr/J lupus-prone mice were administered daily orally with Naringenin for seven months. We showed that Naringenin treatment at 50 or 100 mg/kg inhibited the splenomegaly and decreased the levels of anti-nuclear and anti-dsDNA autoantibodies. Furthermore, a reduction in serum concentration of TNF-α, IFN-γ and IL-6 was observed in the mice provided with Naringenin. Interestingly, serum levels of IL-10 increased. Naringenin decreased the frequency and absolute numbers of splenic effector memory T cells. Additionally, in order to be able to evaluate whether Naringenin prevented kidney damage, twelve-week-old MRL/MpJ-Faslpr/J mice, an accelerated lupus model, were orally administered with Naringenin at 100 mg/kg for six weeks. Surprisingly, Naringenin treatment prevented kidney damage and reduced the development of fibrosis similar to cyclophosphamide group. Moreover, Naringenin treatment increased the percentage of regulatory T cells in this aggressive model of lupus. Together, these results suggest a potential ability of Naringenin to reduce the autoimmunity in lupus-prone mice by modulation of T-cell subsets and cytokines profile that mitigate the development of important lupus clinical manifestations.
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Affiliation(s)
- Amayrani Abrego-Peredo
- Programa de Doctorado en Ciencias de la Salud, Instituto de Ciencias de la Salud, Universidad Veracruzana, Xalapa, Veracruz, México
- Unidad de Citometría de Flujo, Instituto de Ciencias de la Salud, Universidad Veracruzana, Xalapa, Veracruz, Mexico
| | - Héctor Romero-Ramírez
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del IPN, Ciudad de México, México
| | - Enrique Espinosa
- Investigación en Inmunología Integrativa, Instituto Nacional de Enfermedades Respiratorias, Ciudad de México, México
| | - Gabriela López-Herrera
- Unidad de Investigación en Inmunodeficiencias, Instituto Nacional de Pediatría, Ciudad de México, México
| | - Fabio García-García
- Programa de Doctorado en Ciencias de la Salud, Instituto de Ciencias de la Salud, Universidad Veracruzana, Xalapa, Veracruz, México
- Laboratorio de Biología del Sueño, Instituto de Ciencias de la Salud, Universidad Veracruzana, Xalapa, Veracruz, México
| | - Mónica Flores-Muñoz
- Programa de Doctorado en Ciencias de la Salud, Instituto de Ciencias de la Salud, Universidad Veracruzana, Xalapa, Veracruz, México
- Laboratorio de Investigación en Medicina Traslacional, Instituto de Ciencias de la Salud, Universidad Veracruzana, Xalapa, Veracruz, México
| | - Claudia Sandoval-Montes
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México
| | - Juan Carlos Rodríguez-Alba
- Programa de Doctorado en Ciencias de la Salud, Instituto de Ciencias de la Salud, Universidad Veracruzana, Xalapa, Veracruz, México
- Unidad de Citometría de Flujo, Instituto de Ciencias de la Salud, Universidad Veracruzana, Xalapa, Veracruz, Mexico
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7
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Survase DN, Karhale SS, Khedkar VM, Helavi VB. Synthesis, characterization, and biological evaluation of indole aldehydes containing N-benzyl moiety. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1674334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Dattatray N. Survase
- Medicinal Chemistry Research Laboratory, Department of Chemistry, Rajaram College, Shivaji University, Kolhapur, India
| | - Shrikrishna S. Karhale
- Medicinal Chemistry Research Laboratory, Department of Chemistry, Rajaram College, Shivaji University, Kolhapur, India
| | - Vijay M. Khedkar
- Department of Pharmaceutical Chemistry, Shri Vile Parle Kelavani Mandal’s Institute of Pharmacy, Dhule, India
| | - Vasant B. Helavi
- Medicinal Chemistry Research Laboratory, Department of Chemistry, Rajaram College, Shivaji University, Kolhapur, India
- Department of Chemistry, Government Vidarbha Institute of Science, Amravati, India
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8
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Rengasamy KR, Khan H, Gowrishankar S, Lagoa RJ, Mahomoodally FM, Khan Z, Suroowan S, Tewari D, Zengin G, Hassan ST, Pandian SK. The role of flavonoids in autoimmune diseases: Therapeutic updates. Pharmacol Ther 2019; 194:107-131. [DOI: 10.1016/j.pharmthera.2018.09.009] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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9
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Mohammadi S, Memarian A, Sedighi S, Behnampour N, Yazdani Y. Immunoregulatory effects of indole-3-carbinol on monocyte-derived macrophages in systemic lupus erythematosus: A crucial role for aryl hydrocarbon receptor. Autoimmunity 2018; 51:199-209. [PMID: 30289282 DOI: 10.1080/08916934.2018.1494161] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Macrophages are versatile phagocytic cells in immune system with immunoregulatory functions. However, the removal of apoptotic cells by macrophages is disturbed in systemic lupus erythematosus (SLE). Aryl hydrocarbon receptor (AhR) is a ligand-activated cytoplasmic receptor and transcription factor with diverse effects on immune response. Indole-3-carbinol (I3C) is an AhR agonist which has been implicated as a beneficial factor in regulating inflammation and cytokine expression in murine models of SLE. However, the molecular mechanisms are not thoroughly studied. Here, we aimed to investigate the ex vivo effects of I3C on polarization of monocyte-derived macrophages (MDMs) in SLE patients and the expression of regulatory cytokines upon AhR activation. MDMs from 15 newly diagnosed SLE patients and 10 normal subjects were induced by Jurkat apoptotic bodies (JABs) and treated with I3C. I3C enhanced the nuclear accumulation of AhR among MDMs of SLE patients and altered the expression of AhR target genes including CYP1A1, IL1- β, IDO-1 and MRC-1. The imbalanced expression of pro- and anti- inflammatory cytokines (IL-10, IL-12, TGFβ1, TNFα, IL-23, IL-6 and IFN-γ) was compensated in response to I3C. AhR activation was also associated with the overexpression of M2 markers (CD163) and downregulation of M1 markers (CD86). Thus, macrophages are activated alternatively in response to I3C. The obtained data indicate that I3C-mediated AhR activation possess immunoregulatory effects on macrophages of SLE patients by exerting an obvious downregulation in the expression of pro-inflammatory and overexpression of anti-inflammatory cytokines. Therefore, AhR could be targeted and further investigated as a choice of anti-inflammatory therapies for autoimmune disorders such as SLE.
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Affiliation(s)
- Saeed Mohammadi
- a Stem Cell Research Center , Golestan University of Medical Sciences , Gorgan , Iran
| | - Ali Memarian
- b Golestan Research Center of Gastroenterology and Hepatology , Golestan University of Medical Sciences , Gorgan , Iran
| | - Sima Sedighi
- c Joint, Bone and Connective tissue Research Center (JBCRC) , Golestan University of Medical Sciences , Gorgan , Iran
| | - Nasser Behnampour
- d Department of Biostatistics, Faculty of Health , Golestan University of Medical Sciences , Gorgan , Iran
| | - Yaghoub Yazdani
- e Infectious Diseases Research Center and Laboratory Science Research Center , Golestan University of Medical Sciences , Gorgan , Iran
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10
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Abstract
AbstractSystemic lupus erythematosus (SLE) is a chronic inflammatory and autoimmune disease characterised by multiple organ involvement and a large number of complications. SLE management remains complicated owing to the biological heterogeneity between patients and the lack of safe and specific targeted therapies. There is evidence that dietary factors can contribute to the geoepidemiology of autoimmune diseases such as SLE. Thus, diet therapy could be a promising approach in SLE owing to both its potential prophylactic effects, without the side effects of classical pharmacology, and its contribution to reducing co-morbidities and improving quality of life in patients with SLE. However, the question arises as to whether nutrients could ameliorate or exacerbate SLE and how they could modulate inflammation and immune function at a molecular level. The present review summarises preclinical and clinical experiences to provide the reader with an update of the positive and negative aspects of macro- and micronutrients and other nutritional factors, including dietary phenols, on SLE, focusing on the mechanisms of action involved.
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11
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Haribabu J, Jeyalakshmi K, Arun Y, Bhuvanesh NSP, Perumal PT, Karvembu R. Synthesis of Ni(II) complexes bearing indole-based thiosemicarbazone ligands for interaction with biomolecules and some biological applications. J Biol Inorg Chem 2016; 22:461-480. [DOI: 10.1007/s00775-016-1424-1] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Accepted: 11/26/2016] [Indexed: 11/25/2022]
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12
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Ghobeh M, Ahmadian S, Meratan AA, Ebrahim-Habibi A, Ghasemi A, Shafizadeh M, Nemat-Gorgani M. Interaction of Aβ(25-35) fibrillation products with mitochondria: Effect of small-molecule natural products. Biopolymers 2016; 102:473-86. [PMID: 25297917 DOI: 10.1002/bip.22572] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 09/18/2014] [Accepted: 10/06/2014] [Indexed: 12/25/2022]
Abstract
The 25-35 fragment of the amyloid β (Aβ) peptide is a naturally occurring proteolytic by-product that retains the pathophysiology of its larger parent molecule, whose deposition has been shown to involve mitochondrial dysfunction. Hence, disruption of Aβ(25-35) aggregates could afford an effective remedial strategy for Alzheimer's disease (AD). In the present study, the effect of a number of selected small-molecule natural products (polyphenols: resveratrol, quercetin, biochanin A, and indoles: indole-3-acetic acid, indole-3-carbinol (I3C)) on Aβ(25-35) fibrillogenesis was explored under physiological conditions, and interaction of the resulting structures with rat brain mitochondria was investigated. Several techniques, including fluorescence, circular dichroism, and transmission electron microscopy were utilized to characterize the aggregation products, and possible mitochondrial membrane permeabilization was determined following release of marker enzymes. Results demonstrate the capacity of Aβ(25-35) fibrils to damage mitochondria and suggest how small molecules may afford protection. While I3C appeared more effective in inhibiting the fibrillation process, all natural products behaved similarly in destabilizing preformed aggregates. It is concluded that elucidation of such protection may provide important insights into the development of preventive and therapeutic agents for AD.
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Affiliation(s)
- Maryam Ghobeh
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
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13
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Latosińska JN, Latosińska M, Szafrański M, Seliger J, Žagar V, Burchardt DV. Impact of structural differences in carcinopreventive agents indole-3-carbinol and 3,3'-diindolylmethane on biological activity. An X-ray, ¹H-¹⁴N NQDR, ¹³C CP/MAS NMR, and periodic hybrid DFT study. Eur J Pharm Sci 2015; 77:141-53. [PMID: 26066413 DOI: 10.1016/j.ejps.2015.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/01/2015] [Accepted: 06/04/2015] [Indexed: 10/23/2022]
Abstract
Three experimental techniques (1)H-(14)N NQDR, (13)C CP/MAS NMR and X-ray and Density Functional Theory (GGA/BLYP with PBC) and Hirshfeld surfaces were applied for the structure-activity oriented studies of two phyto-antioxidants and anticarcinogens: indole-3-carbinol, I3C, and 3,3'-diindolylmethane, DIM, (its bioactive metabolite). One set of (14)N NQR frequencies for DIM (2.310, 2.200 and 0.110 MHz at 295K) and I3C (2.315, 1.985 and 0.330 MHz at 160K) was recorded. The multiplicity of NQR lines recorded at RT revealed high symmetry (chemical and physical equivalence) of both methyl indazole rings of DIM. Carbonyl (13)C CSA tensor components were calculated from the (13)C CP/MAS solid state NMR spectrum of I3C recorded under fast and slow spinning. At room temperature the crystal structure of I3C is orthorhombic: space group Pca21, Z=4, a=5.78922(16), b=15.6434(7) and c=8.4405(2)Å. The I3C molecules are aggregated into ribbons stacked along [001]. The oxygen atomsare disorderedbetween the two sites of different occupancy factors. It implies that the crystal is built of about 70% trans and 30% gauche conformers, and apart from the weak OH⋯O hydrogen bonds (O⋯O=3.106Å) the formation of alternative O'H⋯O bonds (O'⋯O=2.785Å) is possible within the 1D ribbons. The adjacent ribbons are further stabilised by O'H⋯O bonds (O'⋯O=2.951Å). The analysis of spectra and intermolecular interactions pattern by experimental techniques was supported by solid (periodic) DFT calculations. The knowledge of the topology and competition of the interactions in crystalline state shed some light on the preferred conformations of CH2OH in I3C and steric hindrance of methyl indole rings in DIM. A comparison of the local environment in gas phase and solid permitted drawing some conclusions on the nature of the interactions required for effective processes of recognition and binding of a given anticarcinogen to the protein or nucleic acid.
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Affiliation(s)
| | - Magdalena Latosińska
- Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
| | - Marek Szafrański
- Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
| | - Janez Seliger
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia; "Jozef Stefan" Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Veselko Žagar
- "Jozef Stefan" Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Dorota V Burchardt
- Department of Paediatric Dentistry, Poznan University of Medical Sciences, Bukowska 70, 60-812 Poznań, Poland
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Blimp-1 siRNA inhibits B cell differentiation and prevents the development of lupus in mice. Hum Immunol 2012; 74:297-301. [PMID: 23220434 DOI: 10.1016/j.humimm.2012.11.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 11/14/2012] [Accepted: 11/27/2012] [Indexed: 01/05/2023]
Abstract
Cumulative evidence suggest that B-lymphocytes play a role in the development of systemic lupus erythematosus (SLE). Thus, the therapeutic approach targeting specific B cells provides a promising way to treat SLE. Blimp-1 (B lymphocyte induced maturation protein), a transcriptional factor, controls the terminal differentiation of mature B cells to plasma cells. To explore the potential of Blimp-1 in the SLE development, we constructed the adenovirus encoding Blimp-1 siRNA, and injected it into BWF1 lupus mice. The results demonstrated that Blimp-1 siRNA decreased the Blimp-1 expression of B cells by regulating XBP-1 (X Box binding protein-1), BCMA (B-cell maturation antigen) expression through c-myc pathway. In addition, Blimp-1 siRNA eliminated anti-dsDNA antibody-producing plsma cells, reduced serum anti-dsDNA antibody levels and impeded the development of lupus. Therefore, our data provide the insight into the mechanism of Blimp-1 in SLE development and might represent a promising therapeutic strategy for autoantibody-mediated diseases.
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Feng F, Silvin CJ, Fiore NC, Stoll ML, Price KE, Shanley PS, Silverstone AE, Gavalchin J. 17β-Estradiol (E-2) administration to male (NZB × SWR)F1 mice results in increased IdLNF1-reactive memory T-lymphocytes and accelerated glomerulonephritis. Lupus 2011; 21:288-301. [DOI: 10.1177/0961203311425519] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
While it has been shown that estradiol treatment accelerates the onset of lupus nephritis with autoantibody production and kidney damage in both male and female lupus-prone mice, the specific mechanism(s) involved are unknown. Our previous work has shown that alterations in IdLNF1-reactive T cells and IdLNF1+ antibodies correlated closely with the onset of autoimmune nephritis in female F1 progeny of SWR and NZB (SNF1) mice, supporting a critical role for the IdLNF1 idiotype in the development of disease. Since male SNF1 mice normally do not develop nephritis, we tested whether administration of 17β-estradiol (E-2) to male SNF1 mice would increase IdLNF1 IgG levels and autoreactive T cells, and further, induce nephritis. We found that E-2-treated male SNF1 mice developed nephritis with the same time course and mean survival as normal female SNF1 mice. Moreover, it appeared that the mechanism involved increased serum IdLNF1+IgG and its deposition in kidney glomeruli, preceded by astriking twofold increase in T-lymphocytes expressing the memory phenotype (CD44+CD45RBlo) predominantly in the IdLNF1-reactive T-cell population. In addition, we noted that cells with this phenotype were increased in the nephritic kidneys of treated mice, suggesting a direct involvement of those cells in the renal pathology. E-2 treatment also induced increased numbers of pathogenic IdLNF1+ antibody-producing B cells and elevated presentation of pathogenic IdLNF1+ peptide. Taken together, these results suggest a mechanism of E-2-induced acceleration of autoimmune disease in lupus-prone mice may involve expansion of autoreactive idiotypic T and B-cell populations.
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Affiliation(s)
- F Feng
- Department of Microbiology & Immunology, Cornell University, Ithaca, NY, USA
| | - CJ Silvin
- Department of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - NC Fiore
- Department of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - ML Stoll
- Department of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - KE Price
- Department of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - PS Shanley
- Department of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - AE Silverstone
- Department of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - J Gavalchin
- Department of Microbiology & Immunology, SUNY Upstate Medical University, Syracuse, NY, USA
- Department of Animal Science, Cornell University, Ithaca, NY, USA
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16
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Murine models of systemic lupus erythematosus. J Biomed Biotechnol 2011; 2011:271694. [PMID: 21403825 PMCID: PMC3042628 DOI: 10.1155/2011/271694] [Citation(s) in RCA: 267] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Revised: 12/09/2010] [Accepted: 12/19/2010] [Indexed: 11/18/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a multifactorial autoimmune disorder. The study of diverse mouse models of lupus has provided clues to the etiology of SLE. Spontaneous mouse models of lupus have led to identification of numerous susceptibility loci from which several candidate genes have emerged. Meanwhile, induced models of lupus have provided insight into the role of environmental factors in lupus pathogenesis as well as provided a better understanding of cellular mechanisms involved in the onset and progression of disease. The SLE-like phenotypes present in these models have also served to screen numerous potential SLE therapies. Due to the complex nature of SLE, it is necessary to understand the effect specific targeted therapies have on immune homeostasis. Furthermore, knowledge gained from mouse models will provide novel therapy targets for the treatment of SLE.
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17
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Reilly CM, Regna N, Mishra N. HDAC inhibition in lupus models. Mol Med 2011; 17:417-25. [PMID: 21327298 DOI: 10.2119/molmed.2011.00055] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Accepted: 02/10/2011] [Indexed: 12/25/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a prototypic autoimmune inflammatory disease characterized by the production of autoantibodies directed against nuclear antigens such as nucleosomes, DNA and histone proteins found within the body's cells and plasma. Autoantibodies may induce disease by forming immune complexes that lodge in target organs or by crossreacting with targeted antigens and damaging tissue. In addition to autoantibody production, apoptotic defects and impaired removal of apoptotic cells contribute to an overload of autoantigens that initiate an autoimmune response. Besides the well-recognized genetic susceptibility to SLE, environmental and epigenetic factors play a crucial role in disease pathogenesis as evidenced by monozygotic twins typically being discordant for disease. Changes in DNA methylation and histone acetylation alter gene expression and are thought to contribute to the epigenetic deregulation in disease. In SLE, global and gene-specific DNA methylation changes have been demonstrated to occur. Additionally, aberrant histone acetylation is evident in individuals with SLE. Moreover, histone deacetylase inhibitors (HDACi) have been shown to reverse the skewed expression of multiple genes involved in SLE. In this review, we discuss the implications of epigenetic alterations in the development and progression of SLE, and how therapeutics designed to alter histone acetylation status may constitute a promising avenue to target disease.
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Affiliation(s)
- Christopher M Reilly
- Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA.
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