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Thomsen M, Künstner A, Wohlers I, Olbrich M, Lenfers T, Osumi T, Shimazaki Y, Nishifuji K, Ibrahim SM, Watson A, Busch H, Hirose M. A comprehensive analysis of gut and skin microbiota in canine atopic dermatitis in Shiba Inu dogs. Microbiome 2023; 11:232. [PMID: 37864204 PMCID: PMC10590023 DOI: 10.1186/s40168-023-01671-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 09/14/2023] [Indexed: 10/22/2023]
Abstract
BACKGROUND Like its human counterpart, canine atopic dermatitis (cAD) is a chronic relapsing condition; thus, most cAD-affected dogs will require lifelong treatment to maintain an acceptable quality of life. A potential intervention is modulation of the composition of gut microbiota, and in fact, probiotic treatment has been proposed and tried in human atopic dermatitis (AD) patients. Since dogs are currently receiving intensive medical care, this will be the same option for dogs, while evidence of gut dysbiosis in cAD is still missing, although skin microbial profiling in cAD has been conducted in several studies. Therefore, we conducted a comprehensive analysis of both gut and skin microbiota in cAD in one specific cAD-predisposed breed, Shiba Inu. Additionally, we evaluated the impact of commonly used medical management on cAD (Janus kinase; JAK inhibitor, oclacitinib) on the gut and skin microbiota. Furthermore, we genotyped the Shiba Inu dogs according to the mitochondrial DNA haplogroup and assessed its association with the composition of the gut microbiota. RESULTS Staphylococcus was the most predominant bacterial genus observed in the skin; Escherichia/Shigella and Clostridium sensu stricto were highly abundant in the gut of cAD-affected dogs. In the gut microbiota, Fusobacteria and Megamonas were highly abundant in healthy dogs but significantly reduced in cAD-affected dogs. The abundance of these bacterial taxa was positively correlated with the effect of the treatment and state of the disease. Oclacitinib treatment on cAD-affected dogs shifted the composition of microbiota towards that in healthy dogs, and the latter brought it much closer to healthy microbiota, particularly in the gut. Additionally, even within the same dog breed, the mtDNA haplogroup varied, and there was an association between the mtDNA haplogroup and microbial composition in the gut and skin. CONCLUSIONS Dysbiosis of both the skin and the gut was observed in cAD in Shiba Inu dogs. Our findings provide a basis for the potential treatment of cAD by manipulating the gut microbiota as well as the skin microbiota. Video Abstract.
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Affiliation(s)
- Mirja Thomsen
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
- Institute of Neurogenetics, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
| | - Axel Künstner
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
- Institute of Cardiogenetics, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
| | - Inken Wohlers
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
- Institute of Cardiogenetics, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
- Biomolecular Data Science in Pneumology, Research Center Borstel, Parkallee 1-40, 23845, Borstel, Germany
| | - Michael Olbrich
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
- Institute of Cardiogenetics, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
- Center for Biotechnology, Khalifa University, Abu Dhabi, UAE
| | - Tim Lenfers
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
| | - Takafumi Osumi
- Animal Medical Center, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Yotaro Shimazaki
- Animal Medical Center, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Koji Nishifuji
- Division of Animal Life Science, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Saleh M Ibrahim
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
- College of Medical and Health Sciences, Khalifa University of Science and Technology, Shakhbout Bin Sultan Street, Abu Dhabi, UAE
| | - Adrian Watson
- Royal Canin SAS, 650 avenue de la Petite Camargue, 30470, Aimargues, France
| | - Hauke Busch
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
- Institute of Cardiogenetics, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
| | - Misa Hirose
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany.
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Bieber K, Bezdek S, Gupta Y, Vorobyev A, Sezin T, Gross N, Prüssmann J, Sayegh JP, Becker M, Mousavi S, Hdnah A, Künzel S, Ibrahim SM, Ludwig RJ, Gullberg D, Sadik CD. Forward genetics and functional analysis highlight Itga11 as a modulator of murine psoriasiform dermatitis. J Pathol 2023; 261:184-197. [PMID: 37565309 DOI: 10.1002/path.6162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 06/07/2023] [Accepted: 06/13/2023] [Indexed: 08/12/2023]
Abstract
Psoriasis is a chronic inflammatory skin condition. Repeated epicutaneous application of Aldara® (imiquimod) cream results in psoriasiform dermatitis in mice. The Aldara®-induced psoriasiform dermatitis (AIPD) mouse model has been used to examine the pathogenesis of psoriasis. Here, we used a forward genetics approach in which we compared AIPD that developed in 13 different inbred mouse strains to identify genes and pathways that modulated disease severity. Among our primary results, we found that the severity of AIPD differed substantially between different strains of inbred mice and that these variations were associated with polymorphisms in Itga11. The Itga11 gene encodes the integrin α11 subunit that heterodimerizes with the integrin β1 subunit to form integrin α11β1. Less information is available about the function of ITGA11 in skin inflammation; however, a role in the regulation of cutaneous wound healing, specifically the development of dermal fibrosis, has been described. Experiments performed with Itga11 gene-deleted (Itga11-/- ) mice revealed that the integrin α11 subunit contributes substantially to the clinical phenotype as well as the histopathological and molecular findings associated with skin inflammation characteristic of AIPD. Although the skin transcriptomes of Itga11-/- and WT mice do not differ from one another under physiological conditions, distinct transcriptomes emerge in these strains in response to the induction of AIPD. Most of the differentially expressed genes contributed to extracellular matrix organization, immune system, and metabolism of lipids pathways. Consistent with these findings, we detected a reduced number of fibroblasts and inflammatory cells, including macrophages, T cells, and tissue-resident memory T cells in skin samples from Itga11-/- mice in response to AIPD induction. Collectively, our results reveal that Itga11 plays a critical role in promoting skin inflammation in AIPD and thus might be targeted for the development of novel therapeutics for psoriasiform skin conditions. © 2023 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Katja Bieber
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Siegfried Bezdek
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Department of Dermatology, Allergy, and Venereology, University of Lübeck, Lübeck, Germany
| | - Yask Gupta
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Artem Vorobyev
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Tanya Sezin
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Department of Dermatology, Allergy, and Venereology, University of Lübeck, Lübeck, Germany
| | - Natalie Gross
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Jasper Prüssmann
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Department of Dermatology, Allergy, and Venereology, University of Lübeck, Lübeck, Germany
| | - Jean-Paul Sayegh
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Department of Dermatology, Allergy, and Venereology, University of Lübeck, Lübeck, Germany
| | - Mareike Becker
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Department of Dermatology, Allergy, and Venereology, University of Lübeck, Lübeck, Germany
| | - Sadegh Mousavi
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Department of Dermatology, Allergy, and Venereology, University of Lübeck, Lübeck, Germany
| | - Ashref Hdnah
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Department of Dermatology, Allergy, and Venereology, University of Lübeck, Lübeck, Germany
| | - Sven Künzel
- Max-Planck Institute for Evolutionary Biology, Plön, Germany
| | - Saleh M Ibrahim
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
- College of Medicine, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Ralf J Ludwig
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | | | - Christian D Sadik
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Department of Dermatology, Allergy, and Venereology, University of Lübeck, Lübeck, Germany
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Mohammad SM, Hegazy LA, Abdel Hady RS, Salama MA, Hammad SK, Ibrahim SM. Real-time PCR versus traditional and Nano-based ELISA in early detection of murine trichinellosis. J Helminthol 2023; 97:e67. [PMID: 37583316 DOI: 10.1017/s0022149x23000470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
Trichinellosis is a serious foodborne zoonosis. It poses a serious risk to public health worldwide. Early serological diagnosis of trichinellosis is influenced by an immunological 'silent' phase following infection. This highlights the necessity for developing sensitive diagnostic approaches to be employed when antibodies cannot be detected. In this work, the validity of traditional ELISA, Nano-ELISA and real time polymerase chain reaction (PCR) were evaluated in early diagnosis of Trichinella spiralis. Swiss albino mice were orally infected with 100 and 300 muscle larvae/mouse. Mice were sacrificed 4, 6, 8, 10, 15, and 28 days post-infection (dpi). Blood samples were tested for circulating antigen by traditional ELISA and Nano-ELISA using anti-rabbit polyclonal IgG conjugated with AgNPs and for Rep gene by SYBR green real-time PCR. Rep gene detection by SYBR green real-time PCR could detect T. spiralis with 100% sensitivity in the mild infection group at 8 dpi, while in the severe infection group it reached 100% sensitivity at 4 dpi. Nano-ELISA could detect T. spiralis circulating antigen from 4 dpi in both mild and severe infection and reached 100% sensitivity at 8 dpi and 6 dpi in mild and severe infection, respectively. However, traditional ELISA could detect T. spiralis circulating antigen from 6 dpi and reached maximum sensitivity at 15 dpi in the mild infection group, while in the severe infection group detection began at 4 dpi and reached 100% sensitivity at 8 dpi. Nano-ELISA and real time PCR, using Rep gene, are useful tools for the detection of early T. spiralis infection even in its mild infection state.
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Affiliation(s)
- S M Mohammad
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Egypt
| | - L A Hegazy
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Egypt
| | - R S Abdel Hady
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Egypt
| | - M A Salama
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Egypt
| | - S K Hammad
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Egypt
| | - S M Ibrahim
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Egypt
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Doms S, Fokt H, Rühlemann MC, Chung CJ, Kuenstner A, Ibrahim SM, Franke A, Turner LM, Baines JF. Key features of the genetic architecture and evolution of host-microbe interactions revealed by high-resolution genetic mapping of the mucosa-associated gut microbiome in hybrid mice. eLife 2022; 11:75419. [PMID: 35866635 PMCID: PMC9307277 DOI: 10.7554/elife.75419] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 06/14/2022] [Indexed: 12/13/2022] Open
Abstract
Determining the forces that shape diversity in host-associated bacterial communities is critical to understanding the evolution and maintenance of metaorganisms. To gain deeper understanding of the role of host genetics in shaping gut microbial traits, we employed a powerful genetic mapping approach using inbred lines derived from the hybrid zone of two incipient house mouse species. Furthermore, we uniquely performed our analysis on microbial traits measured at the gut mucosal interface, which is in more direct contact with host cells and the immune system. Several mucosa-associated bacterial taxa have high heritability estimates, and interestingly, 16S rRNA transcript-based heritability estimates are positively correlated with cospeciation rate estimates. Genome-wide association mapping identifies 428 loci influencing 120 taxa, with narrow genomic intervals pinpointing promising candidate genes and pathways. Importantly, we identified an enrichment of candidate genes associated with several human diseases, including inflammatory bowel disease, and functional categories including innate immunity and G-protein-coupled receptors. These results highlight key features of the genetic architecture of mammalian host-microbe interactions and how they diverge as new species form. The digestive system, particularly the large intestine, hosts many types of bacteria which together form the gut microbiome. The exact makeup of different bacterial species is specific to an individual, but microbiomes are often more similar between related individuals, and more generally, across related species. Whether this is because individuals share similar environments or similar genetic backgrounds remains unclear. These two factors can be disentangled by breeding different animal lineages – which have different genetic backgrounds while belonging to the same species – and then raising the progeny in the same environment. To investigate this question, Doms et al. studied the genes and microbiomes of mice resulting from breeding strains from multiple locations in a natural hybrid zone between different subspecies. The experiments showed that 428 genetic regions affected the makeup of the microbiome, many of which were known to be associated with human diseases. Further analysis revealed 79 genes that were particularly interesting, as they were involved in recognition and communication with bacteria. These results show how the influence of the host genome on microbiome composition becomes more specialized as animals evolve. Overall, the work by Doms et al. helps to pinpoint the genes that impact the microbiome; this knowledge could be helpful to examine how these interactions contribute to the emergence of conditions such as diabetes or inflammatory bowel disease, which are linked to perturbations in gut bacteria.
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Affiliation(s)
- Shauni Doms
- Max Planck Institute for Evolutionary Biology, Plön, Germany.,Section of Evolutionary Medicine, Institute for Experimental Medicine, Kiel University, Kiel, Germany
| | - Hanna Fokt
- Max Planck Institute for Evolutionary Biology, Plön, Germany.,Section of Evolutionary Medicine, Institute for Experimental Medicine, Kiel University, Kiel, Germany
| | - Malte Christoph Rühlemann
- Institute for Clinical Molecular Biology (IKMB), Kiel University, Kiel, Germany.,Institute for Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Hannover, Germany
| | - Cecilia J Chung
- Max Planck Institute for Evolutionary Biology, Plön, Germany.,Section of Evolutionary Medicine, Institute for Experimental Medicine, Kiel University, Kiel, Germany
| | - Axel Kuenstner
- Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Saleh M Ibrahim
- Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.,Sharjah Institute of Medical Research, Sharjah, United Arab Emirates
| | - Andre Franke
- Institute for Clinical Molecular Biology (IKMB), Kiel University, Kiel, Germany
| | - Leslie M Turner
- Milner Centre for Evolution, Department of Biology & Biochemistry, University of Bath, Bath, United Kingdom
| | - John F Baines
- Max Planck Institute for Evolutionary Biology, Plön, Germany.,Section of Evolutionary Medicine, Institute for Experimental Medicine, Kiel University, Kiel, Germany
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5
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Ramakrishnan RK, Bajbouj K, Guimei M, Rawat SS, Kalaji Z, Hachim MY, Mahboub B, Ibrahim SM, Hamoudi R, Halwani R, Hamid Q. Bcl10 Regulates Lipopolysaccharide-Induced Pro-Fibrotic Signaling in Bronchial Fibroblasts from Severe Asthma Patients. Biomedicines 2022; 10:biomedicines10071716. [PMID: 35885021 PMCID: PMC9312497 DOI: 10.3390/biomedicines10071716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/24/2022] [Accepted: 06/30/2022] [Indexed: 11/17/2022] Open
Abstract
Subepithelial fibrosis is a characteristic hallmark of airway remodeling in asthma. Current asthma medications have limited efficacy in treating fibrosis, particularly in patients with severe asthma, necessitating a deeper understanding of the fibrotic mechanisms. The NF-κB pathway is key to airway inflammation in asthma, as it regulates the activity of multiple pro-inflammatory mediators that contribute to airway pathology. Bcl10 is a well-known upstream mediator of the NF-κB pathway that has been linked to fibrosis in other disease models. Therefore, we investigated Bcl10-mediated NF-κB activation as a potential pathway regulating fibrotic signaling in severe asthmatic fibroblasts. We demonstrate here the elevated protein expression of Bcl10 in bronchial fibroblasts and bronchial biopsies from severe asthmatic patients when compared to non-asthmatic individuals. Lipopolysaccharide (LPS) induced the increased expression of the pro-fibrotic cytokines IL-6, IL-8 and TGF-β1 in bronchial fibroblasts, and this induction was associated with the activation of Bcl10. Inhibition of the Bcl10-mediated NF-κB pathway using an IRAK1/4 selective inhibitor abrogated the pro-fibrotic signaling induced by LPS. Thus, our study indicates that Bcl10-mediated NF-κB activation signals increased pro-fibrotic cytokine expression in severe asthmatic airways. This reveals the therapeutic potential of targeting Bcl10 signaling in ameliorating inflammation and fibrosis, particularly in severe asthmatic individuals.
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Affiliation(s)
- Rakhee K. Ramakrishnan
- Sharjah Institute for Medical Research, College of Medicine, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates; (R.K.R.); (K.B.); (Z.K.); (B.M.); (S.M.I.)
| | - Khuloud Bajbouj
- Sharjah Institute for Medical Research, College of Medicine, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates; (R.K.R.); (K.B.); (Z.K.); (B.M.); (S.M.I.)
| | - Maha Guimei
- Department of Pathology, Faculty of Medicine, Alexandria University, Alexandria 21526, Egypt;
| | - Surendra Singh Rawat
- College of Medicine, Mohammed Bin Rashid University, Dubai P.O. Box 505055, United Arab Emirates; (S.S.R.); (M.Y.H.)
| | - Zaina Kalaji
- Sharjah Institute for Medical Research, College of Medicine, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates; (R.K.R.); (K.B.); (Z.K.); (B.M.); (S.M.I.)
| | - Mahmood Y. Hachim
- College of Medicine, Mohammed Bin Rashid University, Dubai P.O. Box 505055, United Arab Emirates; (S.S.R.); (M.Y.H.)
| | - Bassam Mahboub
- Sharjah Institute for Medical Research, College of Medicine, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates; (R.K.R.); (K.B.); (Z.K.); (B.M.); (S.M.I.)
- Rashid Hospital, Dubai Health Authority, Dubai P.O. Box 4545, United Arab Emirates
| | - Saleh M. Ibrahim
- Sharjah Institute for Medical Research, College of Medicine, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates; (R.K.R.); (K.B.); (Z.K.); (B.M.); (S.M.I.)
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, 23562 Lübeck, Germany
| | - Rifat Hamoudi
- Sharjah Institute for Medical Research, College of Medicine, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates; (R.K.R.); (K.B.); (Z.K.); (B.M.); (S.M.I.)
- Division of Surgery and Interventional Science, University College London, London WC1E 6BT, UK
- Correspondence: (R.H.); (R.H.); (Q.H.)
| | - Rabih Halwani
- Sharjah Institute for Medical Research, College of Medicine, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates; (R.K.R.); (K.B.); (Z.K.); (B.M.); (S.M.I.)
- Immunology Research Lab, College of Medicine, King Saud University, Riyadh P.O. Box 145111, Saudi Arabia
- Correspondence: (R.H.); (R.H.); (Q.H.)
| | - Qutayba Hamid
- Sharjah Institute for Medical Research, College of Medicine, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates; (R.K.R.); (K.B.); (Z.K.); (B.M.); (S.M.I.)
- Meakins-Christie Laboratories, McGill University, Montreal, QC H3A 0G4, Canada
- Correspondence: (R.H.); (R.H.); (Q.H.)
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Künstner A, Schilf P, Busch H, Ibrahim SM, Hirose M. Changes of Gut Microbiota by Natural mtDNA Variant Differences Augment Susceptibility to Metabolic Disease and Ageing. Int J Mol Sci 2022; 23:ijms23031056. [PMID: 35162979 PMCID: PMC8835372 DOI: 10.3390/ijms23031056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/13/2022] [Accepted: 01/18/2022] [Indexed: 12/30/2022] Open
Abstract
We recently reported on two mouse strains carrying different single nucleotide variations in the mitochondrial complex I gene, i.e., B6-mtBPL mice carrying m.11902T>C and B6-mtALR carrying m.4738C>A. B6-mtBPL mice exhibited a longer lifespan and a lower metabolic disease susceptibility despite mild mitochondrial functional differences in steady-state. As natural polymorphisms in the mitochondrial DNA (mtDNA) are known to be associated with distinct patterns of gut microbial composition, we further investigated the gut microbiota composition in these mice strains. In line with mouse phenotypes, we found a significantly lower abundance of Proteobacteria, which is positively associated with pathological conditions, in B6-mtBPL compared to B6-mtALR mice. A prediction of functional profile of significantly differential bacterial genera between these strains revealed an involvement of glucose metabolism pathways. Whole transcriptome analysis of liver samples from B6-mtBPL and B6-mtALR mice confirmed these findings. Thus, both host gene expression and gut microbial changes caused by the mtDNA variant differences may contribute to the ageing and metabolic phenotypes observed in these mice strains. Since gut microbiota are easier to modulate, compared with mtDNA variants, identification of such mtDNA variants, specific gut bacterial species and bacterial metabolites may be a potential intervention to modulate common diseases, which are differentially susceptible to individuals with different mtDNA variants.
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Affiliation(s)
- Axel Künstner
- Lübeck Institute of Experimental Dermatology, University of Lübeck, 23562 Lübeck, Germany; (A.K.); (P.S.); (H.B.); (S.M.I.)
- Institute for Cardiogenetics, University of Lübeck, 23562 Lübeck, Germany
| | - Paul Schilf
- Lübeck Institute of Experimental Dermatology, University of Lübeck, 23562 Lübeck, Germany; (A.K.); (P.S.); (H.B.); (S.M.I.)
| | - Hauke Busch
- Lübeck Institute of Experimental Dermatology, University of Lübeck, 23562 Lübeck, Germany; (A.K.); (P.S.); (H.B.); (S.M.I.)
- Institute for Cardiogenetics, University of Lübeck, 23562 Lübeck, Germany
| | - Saleh M. Ibrahim
- Lübeck Institute of Experimental Dermatology, University of Lübeck, 23562 Lübeck, Germany; (A.K.); (P.S.); (H.B.); (S.M.I.)
- College of Medicine and Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Misa Hirose
- Lübeck Institute of Experimental Dermatology, University of Lübeck, 23562 Lübeck, Germany; (A.K.); (P.S.); (H.B.); (S.M.I.)
- Correspondence:
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7
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Murthy S, Schilf P, Patzelt S, Thieme M, Becker M, Kröger L, Bremer T, Derenda-Hell A, Knebel L, Fagiani F, Ibrahim SM, Schmidt E, Zillikens D, Sadik CD. Dapsone Suppresses Disease in Preclinical Murine Models of Pemphigoid Diseases. J Invest Dermatol 2021; 141:2587-2595.e2. [PMID: 34033839 DOI: 10.1016/j.jid.2021.04.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/09/2021] [Accepted: 04/01/2021] [Indexed: 01/10/2023]
Abstract
Epidermolysis bullosa acquisita and mucous membrane pemphigoid are autoimmune blistering diseases characterized by mucocutaneous blisters elicited by an autoantibody-mediated immune response against specific proteins of the epidermal basement membrane. The antibiotic dapsone is frequently used to treat both diseases, but its therapeutic effectiveness is uncertain, and its mode of action in these diseases is largely unknown. We evaluated the effect of dapsone in antibody transfer mouse models of epidermolysis bullosa acquisita and mucous membrane pemphigoid, which do not allow the drawing of conclusions on clinical treatment regimens but can be instrumental to partially uncover the mode(s) of action of dapsone in these diseases. Dapsone significantly mitigated inflammation in both models, reducing the recruitment of neutrophils into the skin and disrupting their release of leukotriene B4 (LTB4) and ROS in response to immune complexes. LTB4 has been implicated in numerous diseases, but effective LTB4 inhibitors for clinical use are not available. Our findings indicate that the mode of action of dapsone in these models may be based on the inhibition of LTB4 and ROS release from neutrophils. Moreover, they encourage testing the use of dapsone as an effective, albeit nonspecific, inhibitor of LTB4 biosynthesis in other LTB4-driven diseases.
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Affiliation(s)
- Sripriya Murthy
- Department of Dermatology, Allergology, and Venereology, University of Lübeck, Lübeck, Germany
| | - Paul Schilf
- Department of Dermatology, Allergology, and Venereology, University of Lübeck, Lübeck, Germany
| | - Sabrina Patzelt
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Markus Thieme
- Department of Dermatology, Allergology, and Venereology, University of Lübeck, Lübeck, Germany
| | - Mareike Becker
- Department of Dermatology, Allergology, and Venereology, University of Lübeck, Lübeck, Germany
| | - Lasse Kröger
- Department of Dermatology, Allergology, and Venereology, University of Lübeck, Lübeck, Germany
| | - Tabea Bremer
- Department of Dermatology, Allergology, and Venereology, University of Lübeck, Lübeck, Germany
| | - Aleksandra Derenda-Hell
- Department of Dermatology, Allergology, and Venereology, University of Lübeck, Lübeck, Germany
| | - Lea Knebel
- Department of Dermatology, Allergology, and Venereology, University of Lübeck, Lübeck, Germany
| | - Francesca Fagiani
- Department of Dermatology, Allergology, and Venereology, University of Lübeck, Lübeck, Germany
| | - Saleh M Ibrahim
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany; Center for Research on Inflammation of the Skin (CRIS), University of Lübeck, Lübeck, Germany
| | - Enno Schmidt
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany; Center for Research on Inflammation of the Skin (CRIS), University of Lübeck, Lübeck, Germany
| | - Detlef Zillikens
- Department of Dermatology, Allergology, and Venereology, University of Lübeck, Lübeck, Germany; Center for Research on Inflammation of the Skin (CRIS), University of Lübeck, Lübeck, Germany
| | - Christian D Sadik
- Department of Dermatology, Allergology, and Venereology, University of Lübeck, Lübeck, Germany; Center for Research on Inflammation of the Skin (CRIS), University of Lübeck, Lübeck, Germany.
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8
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Beckmann L, Künstner A, Freschi ML, Huber G, Stölting I, Ibrahim SM, Hirose M, Freitag M, Langan EA, Matschl U, Galuska CE, Fuchs B, Knobloch JK, Busch H, Raasch W. Telmisartan induces a specific gut microbiota signature which may mediate its antiobesity effect. Pharmacol Res 2021; 170:105724. [PMID: 34116209 DOI: 10.1016/j.phrs.2021.105724] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/17/2021] [Accepted: 06/04/2021] [Indexed: 02/07/2023]
Abstract
Telmisartan prevents diet-induced obesity (DIO) in rodents. Given that the precise underlying mechanism is not known, we examined whether a gut-related mechanism might be involved. Sprague-Dawley rats received cafeteria diet (CD) for 3 months to develop DIO and were administered either telmisartan (8 mg/kgbw) or vehicle. In addition, pair-fed (PF) rats received CD adjusted to TEL and control rats (CON) only received chow. Stool samples were analysed by 16 S rRNA gene amplicon sequencing. CD-fed rats became obese while TEL, PF and CON rats remained lean. Alpha diversity analyses indicated that bacterial diversity was similar before the study but changed over time. Beta diversity revealed a time-, CD- and telmisartan-dependent effect. The Firmicutes/Bacteroidetes ratio and the abundance of Blautia, Allobaculum and Parasutterella were higher in DIO and PF than in CON, but not in TEL. Enterotype (ET)-like clustering analyses, Kleinberg's hub network scoring and random forest analyses also indicated that telmisartan induced a specific signature of gut microbiota. In response to stool transfer from telmisartan-pre-treated donor to high-fat fed acceptor mice, body weight gain was slightly attenuated. We attribute the anti-obesity action of telmisartan treatment to diet-independent alterations in gut microbiota as the microbiota from telmisartan-treated, CD-fed rats clearly differed from those of DIO and PF rats. ET-like clustering network, random forest classification and the higher stability in bacterial co-occurrence network analyses indicate that there is more than one indicator species for telmisartan's specific signature, which is further strengthened by the fact that we cannot identify a single indicator species.
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Affiliation(s)
- Laura Beckmann
- Institute of Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Germany
| | - Axel Künstner
- Medical Systems Biology Group, Institute of Experimental Dermatology, University of Lübeck, Germany; Institute for Cardiogenetic, University of Lübeck, Germany
| | - Marco L Freschi
- Institute of Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Germany
| | - Gianna Huber
- Institute of Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Germany; DZHK (German Centre for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Lübeck, Germany; CBBM (Center of Brain, Behavior and Metabolism), Germany
| | - Ines Stölting
- Institute of Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Germany
| | - Saleh M Ibrahim
- Institute of Experimental Dermatology, University of Lübeck, Germany
| | - Misa Hirose
- Institute of Experimental Dermatology, University of Lübeck, Germany
| | - Miriam Freitag
- Departement of Dermatology, University of Lübeck, Germany
| | - Ewan A Langan
- Departement of Dermatology, University of Lübeck, Germany; Dermatological Sciences, University of Manchester, UK
| | - Urte Matschl
- Department Virus Immunology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | - Christina E Galuska
- Leibniz Institute for Farm Animal Biology (FBN) Core Facility Metabolomics, Germany
| | - Beate Fuchs
- Leibniz Institute for Farm Animal Biology (FBN) Core Facility Metabolomics, Germany
| | - Johannes K Knobloch
- Clinic of Infectiology and Microbiology, University Clinic Schleswig-Holstein, Campus Lübeck, Germany; DZHK (German Centre for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Lübeck, Germany; Insitute for Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Hauke Busch
- Medical Systems Biology Group, Institute of Experimental Dermatology, University of Lübeck, Germany; Institute for Cardiogenetic, University of Lübeck, Germany
| | - Walter Raasch
- Institute of Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Germany; DZHK (German Centre for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Lübeck, Germany; CBBM (Center of Brain, Behavior and Metabolism), Germany.
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9
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Zaher DM, Ramadan WS, El-Awady R, Omar HA, Hersi F, Srinivasulu V, Hachim IY, Al-Marzooq FI, Vazhappilly CG, Merali S, Merali C, Soares NC, Schilf P, Ibrahim SM, Al-Tel TH. A Novel Benzopyrane Derivative Targeting Cancer Cell Metabolic and Survival Pathways. Cancers (Basel) 2021; 13:cancers13112840. [PMID: 34200264 PMCID: PMC8201054 DOI: 10.3390/cancers13112840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 06/01/2021] [Accepted: 06/02/2021] [Indexed: 02/03/2023] Open
Abstract
(1) Background: Today, the discovery of novel anticancer agents with multitarget effects and high safety margins represents a high challenge. Drug discovery efforts indicated that benzopyrane scaffolds possess a wide range of pharmacological activities. This spurs on building a skeletally diverse library of benzopyranes to identify an anticancer lead drug candidate. Here, we aim to characterize the anticancer effect of a novel benzopyrane derivative, aiming to develop a promising clinical anticancer candidate. (2) Methods: The anticancer effect of SIMR1281 against a panel of cancer cell lines was tested. In vitro assays were performed to determine the effect of SIMR1281 on GSHR, TrxR, mitochondrial metabolism, DNA damage, cell cycle progression, and the induction of apoptosis. Additionally, SIMR1281 was evaluated in vivo for its safety and in a xenograft mice model. (3) Results: SIMR1281 strongly inhibits GSHR while it moderately inhibits TrxR and modulates the mitochondrial metabolism. SIMR1281 inhibits the cell proliferation of various cancers. The antiproliferative activity of SIMR1281 was mediated through the induction of DNA damage, perturbations in the cell cycle, and the inactivation of Ras/ERK and PI3K/Akt pathways. Furthermore, SIMR1281 induced apoptosis and attenuated cell survival machinery. In addition, SIMR1281 reduced the tumor volume in a xenograft model while maintaining a high in vivo safety profile at a high dose. (4) Conclusions: Our findings demonstrate the anticancer multitarget effect of SIMR1281, including the dual inhibition of glutathione and thioredoxin reductases. These findings support the development of SIMR1281 in preclinical and clinical settings, as it represents a potential lead compound for the treatment of cancer.
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Affiliation(s)
- Dana M. Zaher
- Sharjah Institute for Medical Researches, University of Sharjah, Sharjah 27272, United Arab Emirates; (D.M.Z.); (W.S.R.); (R.E.-A.); (H.A.O.); (F.H.); (V.S.); (I.Y.H.); (F.I.A.-M.); (C.G.V.); (N.C.S.); (S.M.I.)
- College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Wafaa S. Ramadan
- Sharjah Institute for Medical Researches, University of Sharjah, Sharjah 27272, United Arab Emirates; (D.M.Z.); (W.S.R.); (R.E.-A.); (H.A.O.); (F.H.); (V.S.); (I.Y.H.); (F.I.A.-M.); (C.G.V.); (N.C.S.); (S.M.I.)
- College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Raafat El-Awady
- Sharjah Institute for Medical Researches, University of Sharjah, Sharjah 27272, United Arab Emirates; (D.M.Z.); (W.S.R.); (R.E.-A.); (H.A.O.); (F.H.); (V.S.); (I.Y.H.); (F.I.A.-M.); (C.G.V.); (N.C.S.); (S.M.I.)
- College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Hany A. Omar
- Sharjah Institute for Medical Researches, University of Sharjah, Sharjah 27272, United Arab Emirates; (D.M.Z.); (W.S.R.); (R.E.-A.); (H.A.O.); (F.H.); (V.S.); (I.Y.H.); (F.I.A.-M.); (C.G.V.); (N.C.S.); (S.M.I.)
- College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates
- Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Fatema Hersi
- Sharjah Institute for Medical Researches, University of Sharjah, Sharjah 27272, United Arab Emirates; (D.M.Z.); (W.S.R.); (R.E.-A.); (H.A.O.); (F.H.); (V.S.); (I.Y.H.); (F.I.A.-M.); (C.G.V.); (N.C.S.); (S.M.I.)
- College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Vunnam Srinivasulu
- Sharjah Institute for Medical Researches, University of Sharjah, Sharjah 27272, United Arab Emirates; (D.M.Z.); (W.S.R.); (R.E.-A.); (H.A.O.); (F.H.); (V.S.); (I.Y.H.); (F.I.A.-M.); (C.G.V.); (N.C.S.); (S.M.I.)
| | - Ibrahim Y. Hachim
- Sharjah Institute for Medical Researches, University of Sharjah, Sharjah 27272, United Arab Emirates; (D.M.Z.); (W.S.R.); (R.E.-A.); (H.A.O.); (F.H.); (V.S.); (I.Y.H.); (F.I.A.-M.); (C.G.V.); (N.C.S.); (S.M.I.)
- College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Farah I. Al-Marzooq
- Sharjah Institute for Medical Researches, University of Sharjah, Sharjah 27272, United Arab Emirates; (D.M.Z.); (W.S.R.); (R.E.-A.); (H.A.O.); (F.H.); (V.S.); (I.Y.H.); (F.I.A.-M.); (C.G.V.); (N.C.S.); (S.M.I.)
- Department of Medical Microbiology and Immunology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain 15551, United Arab Emirates
| | - Cijo G. Vazhappilly
- Sharjah Institute for Medical Researches, University of Sharjah, Sharjah 27272, United Arab Emirates; (D.M.Z.); (W.S.R.); (R.E.-A.); (H.A.O.); (F.H.); (V.S.); (I.Y.H.); (F.I.A.-M.); (C.G.V.); (N.C.S.); (S.M.I.)
- School of Arts and Sciences, American University of Ras Al Khaimah, P.O. Box 10021, Ras Al Khaimah 10021, United Arab Emirates
| | - Salim Merali
- School of Pharmacy, Temple University, 3307 N Broad Street, Room 552, Philadelphia, PA 19140, USA; (S.M.); (C.M.)
| | - Carmen Merali
- School of Pharmacy, Temple University, 3307 N Broad Street, Room 552, Philadelphia, PA 19140, USA; (S.M.); (C.M.)
| | - Nelson C. Soares
- Sharjah Institute for Medical Researches, University of Sharjah, Sharjah 27272, United Arab Emirates; (D.M.Z.); (W.S.R.); (R.E.-A.); (H.A.O.); (F.H.); (V.S.); (I.Y.H.); (F.I.A.-M.); (C.G.V.); (N.C.S.); (S.M.I.)
- College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Paul Schilf
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany;
| | - Saleh M. Ibrahim
- Sharjah Institute for Medical Researches, University of Sharjah, Sharjah 27272, United Arab Emirates; (D.M.Z.); (W.S.R.); (R.E.-A.); (H.A.O.); (F.H.); (V.S.); (I.Y.H.); (F.I.A.-M.); (C.G.V.); (N.C.S.); (S.M.I.)
- College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany;
| | - Taleb H. Al-Tel
- Sharjah Institute for Medical Researches, University of Sharjah, Sharjah 27272, United Arab Emirates; (D.M.Z.); (W.S.R.); (R.E.-A.); (H.A.O.); (F.H.); (V.S.); (I.Y.H.); (F.I.A.-M.); (C.G.V.); (N.C.S.); (S.M.I.)
- College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates
- Correspondence: ; Tel.: +971-6505-7417
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10
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Abd El Hafez MS, Shosha EAEM, Ibrahim SM. Isolation and molecular detection of pigeon pox virus in Assiut and New Valley governorates. J Virol Methods 2021; 293:114142. [PMID: 33766658 DOI: 10.1016/j.jviromet.2021.114142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 03/18/2021] [Accepted: 03/18/2021] [Indexed: 10/21/2022]
Abstract
Pigeon Poxvirus (PPV) was detected in eight pigeons suffering from wart like nodular lesions in two Egyptian governorates (Assiut and New Valley) during summer 2018. Different serological and molecular techniques were carried out for isolation and detection of the virus on chorio-allantoic membranes (CAM) of specific-pathogen-free (SPF) embryonated chicken eggs. The characteristic pock lesions were detected on CAMs, whereas PPV was isolated. Electron microscopy revealed enveloped brick shaped Avipoxvirions. The neutralizing antibodies against PPV were detected in six out of eight samples. Serum neutralization test revealed a neutralization index of ≥ 1.6, while ELISA revealed an S/P ratio of ≥ 1.4 in the affected pigeons. Nucleotide sequence of P4b of Pigeon poxvirus isolated from nodule 1 sample (PPVNV1), revealed 100 % nucleotide identity to PPV and only 90 % nucleotide identity with Fowl poxvirus (FPV). P4b locus based SYBR green QPCR produced PPV amplicons of 77.33-77.83 °C melting temperature (Tm). QPCR SYBR green assay successfully differentiated PPV from FPV amplicon which revealed a dissociation curve of Tm =75.85 °C. This is the first report discriminating PPV from FPV based on SYBR green qPCR approach of P4b locus. This isolated local Egyptian strain can be used in vaccine production for optimal vaccination strategy.
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Affiliation(s)
- M S Abd El Hafez
- Department of Poultry Diseases, Faculty of Veterinary Medicine, New Valley University, Egypt
| | - E A E-M Shosha
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, New Valley University, Egypt
| | - S M Ibrahim
- Department of Genetic Engineering, Veterinary Serum and Vaccine Research Institute (VSVRI), Agricultural Research Center (ARC), Egypt.
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11
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Schilf P, Künstner A, Olbrich M, Waschina S, Fuchs B, Galuska CE, Braun A, Neuschütz K, Seutter M, Bieber K, Hellberg L, Sina C, Laskay T, Rupp J, Ludwig RJ, Zillikens D, Busch H, Sadik CD, Hirose M, Ibrahim SM. A Mitochondrial Polymorphism Alters Immune Cell Metabolism and Protects Mice from Skin Inflammation. Int J Mol Sci 2021; 22:ijms22031006. [PMID: 33498298 PMCID: PMC7863969 DOI: 10.3390/ijms22031006] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/14/2021] [Accepted: 01/18/2021] [Indexed: 12/12/2022] Open
Abstract
Several genetic variants in the mitochondrial genome (mtDNA), including ancient polymorphisms, are associated with chronic inflammatory conditions, but investigating the functional consequences of such mtDNA polymorphisms in humans is challenging due to the influence of many other polymorphisms in both mtDNA and the nuclear genome (nDNA). Here, using the conplastic mouse strain B6-mtFVB, we show that in mice, a maternally inherited natural mutation (m.7778G > T) in the mitochondrially encoded gene ATP synthase 8 (mt-Atp8) of complex V impacts on the cellular metabolic profile and effector functions of CD4+ T cells and induces mild changes in oxidative phosphorylation (OXPHOS) complex activities. These changes culminated in significantly lower disease susceptibility in two models of inflammatory skin disease. Our findings provide experimental evidence that a natural variation in mtDNA influences chronic inflammatory conditions through alterations in cellular metabolism and the systemic metabolic profile without causing major dysfunction in the OXPHOS system.
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Affiliation(s)
- Paul Schilf
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany; (P.S.); (A.K.); (M.O.); (K.N.); (K.B.); (R.J.L.); (H.B.)
| | - Axel Künstner
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany; (P.S.); (A.K.); (M.O.); (K.N.); (K.B.); (R.J.L.); (H.B.)
- Institute of Cardiogenetics, University of Luebeck, 23562 Luebeck, Germany
| | - Michael Olbrich
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany; (P.S.); (A.K.); (M.O.); (K.N.); (K.B.); (R.J.L.); (H.B.)
| | - Silvio Waschina
- Institute of Human Nutrition and Food Science, Christian-Albrechts-University of Kiel, 24098 Kiel, Germany;
| | - Beate Fuchs
- Leibniz-Institute for Farm Animal Biology (FBN), Core Facility Metabolomics, 18196 Dummerstorf, Germany; (B.F.); (C.E.G.)
| | - Christina E. Galuska
- Leibniz-Institute for Farm Animal Biology (FBN), Core Facility Metabolomics, 18196 Dummerstorf, Germany; (B.F.); (C.E.G.)
| | - Anne Braun
- Department of Dermatology, University of Luebeck, 23562 Luebeck, Germany; (A.B.); (M.S.); (D.Z.); (C.D.S.)
| | - Kerstin Neuschütz
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany; (P.S.); (A.K.); (M.O.); (K.N.); (K.B.); (R.J.L.); (H.B.)
| | - Malte Seutter
- Department of Dermatology, University of Luebeck, 23562 Luebeck, Germany; (A.B.); (M.S.); (D.Z.); (C.D.S.)
| | - Katja Bieber
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany; (P.S.); (A.K.); (M.O.); (K.N.); (K.B.); (R.J.L.); (H.B.)
| | - Lars Hellberg
- Department of Infectious Diseases and Microbiology, University of Luebeck, 23562 Luebeck, Germany; (L.H.); (T.L.); (J.R.)
| | - Christian Sina
- Institute of Nutritional Medicine, University of Luebeck, 23562 Luebeck, Germany;
| | - Tamás Laskay
- Department of Infectious Diseases and Microbiology, University of Luebeck, 23562 Luebeck, Germany; (L.H.); (T.L.); (J.R.)
| | - Jan Rupp
- Department of Infectious Diseases and Microbiology, University of Luebeck, 23562 Luebeck, Germany; (L.H.); (T.L.); (J.R.)
| | - Ralf J. Ludwig
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany; (P.S.); (A.K.); (M.O.); (K.N.); (K.B.); (R.J.L.); (H.B.)
- Center for Research on Inflammation of the Skin (CRIS), University of Luebeck, 23562 Luebeck, Germany
| | - Detlef Zillikens
- Department of Dermatology, University of Luebeck, 23562 Luebeck, Germany; (A.B.); (M.S.); (D.Z.); (C.D.S.)
- Center for Research on Inflammation of the Skin (CRIS), University of Luebeck, 23562 Luebeck, Germany
| | - Hauke Busch
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany; (P.S.); (A.K.); (M.O.); (K.N.); (K.B.); (R.J.L.); (H.B.)
- Institute of Cardiogenetics, University of Luebeck, 23562 Luebeck, Germany
- Center for Research on Inflammation of the Skin (CRIS), University of Luebeck, 23562 Luebeck, Germany
| | - Christian D. Sadik
- Department of Dermatology, University of Luebeck, 23562 Luebeck, Germany; (A.B.); (M.S.); (D.Z.); (C.D.S.)
- Center for Research on Inflammation of the Skin (CRIS), University of Luebeck, 23562 Luebeck, Germany
| | - Misa Hirose
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany; (P.S.); (A.K.); (M.O.); (K.N.); (K.B.); (R.J.L.); (H.B.)
- Center for Research on Inflammation of the Skin (CRIS), University of Luebeck, 23562 Luebeck, Germany
- Correspondence: (M.H.); (S.M.I.)
| | - Saleh M. Ibrahim
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany; (P.S.); (A.K.); (M.O.); (K.N.); (K.B.); (R.J.L.); (H.B.)
- Center for Research on Inflammation of the Skin (CRIS), University of Luebeck, 23562 Luebeck, Germany
- College of Medicine and Sharjah Institute for Medical Research, University of Sharjah, 27272 Sharjah, UAE
- Correspondence: (M.H.); (S.M.I.)
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12
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Bejaoui Y, Witte M, Abdelhady M, Eldarouti M, Abdallah NMA, Elghzaly AA, Tawhid Z, Gaballah MA, Busch H, Munz M, Wendorff M, Ellinghaus E, Franke A, Ibrahim SM. Genome-wide association study of psoriasis in an Egyptian population. Exp Dermatol 2020; 28:623-627. [PMID: 30921485 DOI: 10.1111/exd.13926] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 02/12/2019] [Accepted: 03/01/2019] [Indexed: 12/30/2022]
Abstract
Psoriasis is a chronic inflammatory disorder of the skin, with genetic factors reportedly involved in the disease pathogenesis. Numerous studies reported psoriasis candidate genes. However, these tend to involve mostly in the European and Asian populations. Here, we report the first genome-wide association study (GWAS) in an Egyptian population, identifying susceptibility variants for psoriasis using a two-stage case-control design. In the first discovery stage, we carried out a genome-wide association analysis using the Infinium® Global Screening Array-24 v1.0, on 253 cases and 449 control samples of Egyptian descent. In the second replication stage, 26 single-nucleotide polymorphisms (SNPs) were selected for replication in additional 321 cases and 253 controls. In concordance with the findings from previous studies on other populations, we found a genome-wide significant association between the MHC locus and the disease at rs12199223 (Pcomb = 6.57 × 10-18 ) and rs1265181 (Pcomb = 1.03 × 10-10 ). Additionally, we identified a novel significant association with the disease at locus, 4q32.1 (rs12650590, Pcomb = 4.49 × 10-08 ) in the vicinity of gene GUCY1A3, and multiple suggestive associations, for example rs10832027 (Pcomb = 7.28 × 10-06 ) and rs3770019 (Pcomb = 1.02 × 10-05 ). This proposes the existence of important interethnic genetic differences in psoriasis susceptibility. Further studies are necessary to elucidate the downstream pathways of the new candidate loci.
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Affiliation(s)
- Yosra Bejaoui
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Mareike Witte
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Mohamed Abdelhady
- Faculty of Medicine, Department Dermatology, Cairo University, Cairo, Egypt
| | - Mohammad Eldarouti
- Faculty of Medicine, Department Dermatology, Cairo University, Cairo, Egypt
| | - Nermeen M A Abdallah
- Faculty of Medicine, Department of Medical Microbiology and Immunology, Ain Shams University, Cairo, Egypt
| | - Ashraf Antar Elghzaly
- Faculty of Medicine, Clinical Immunology Unit, Clinical Pathology Department, Mansoura University, Mansoura, Egypt
| | - Ziyad Tawhid
- Faculty of Medicine, Clinical Immunology Unit, Clinical Pathology Department, Mansoura University, Mansoura, Egypt
| | - Mohammad Ali Gaballah
- Faculty of Medicine, Dermatology, Andrology and STD Department, Mansoura University, Mansoura, Egypt
| | - Hauke Busch
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Matthias Munz
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Mareike Wendorff
- Institute of Clinical Molecular Biology, Christian-Albrechts-University, Kiel, Germany
| | - Eva Ellinghaus
- Institute of Clinical Molecular Biology, Christian-Albrechts-University, Kiel, Germany
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University, Kiel, Germany
| | - Saleh M Ibrahim
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
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13
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Clauder AK, Kordowski A, Bartsch YC, Köhl G, Lilienthal GM, Almeida LN, Lindemann T, Petry J, Rau CN, Gramalla-Schmitz A, Dühring L, Elbracht C, Kenno S, Tillmann J, Wuhrer M, Ludwig RJ, Ibrahim SM, Bieber K, Köhl J, Ehlers M, Manz RA. IgG Fc N-Glycosylation Translates MHCII Haplotype into Autoimmune Skin Disease. J Invest Dermatol 2020; 141:285-294. [PMID: 32653301 DOI: 10.1016/j.jid.2020.06.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 05/19/2020] [Accepted: 06/03/2020] [Indexed: 11/29/2022]
Abstract
The major histocompatibility complex haplotype represents the most prevalent genetic risk factor for the development of autoimmune diseases. However, the mechanisms by which major histocompatibility complex-associated genetic susceptibility translates into autoimmune disease are not fully understood. Epidermolysis bullosa acquisita is an autoimmune skin-blistering disease driven by autoantibodies to type VII collagen. Here, we investigated autoantigen-specific plasma cells, CD4+ T cells, and IgG fraction crystallizable glycosylation in murine epidermolysis bullosa acquisita in congenic mouse strains with the disease-permitting H2s or disease-nonpermitting H2b major histocompatibility complex II haplotypes. Mice with an H2s haplotype showed increased numbers of autoreactive CD4+ T cells and elevated IL-21 and IFN-γ production, associated with a higher frequency of IgG autoantibodies with an agalactosylated, proinflammatory N-glycan moiety. Mechanistically, we show that the altered antibody glycosylation leads to increased ROS release from neutrophils, the main drivers of autoimmune inflammation in this model. These results indicate that major histocompatibility complex II-associated susceptibility to autoimmune diseases acuminates in a proinflammatory IgG fraction crystallizable N-glycosylation pattern and provide a mechanistic link to increased ROS release by neutrophils.
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Affiliation(s)
- Ann-Katrin Clauder
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Anna Kordowski
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany; Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Yannic C Bartsch
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Gabriele Köhl
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Gina-Maria Lilienthal
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Larissa N Almeida
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Timo Lindemann
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Janina Petry
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Christina N Rau
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | | | - Lara Dühring
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Claudia Elbracht
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Samyr Kenno
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Jenny Tillmann
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center (LUMC), Leiden, Netherlands
| | - Ralf J Ludwig
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Saleh M Ibrahim
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Katja Bieber
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Jörg Köhl
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany; Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Marc Ehlers
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Rudolf Armin Manz
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany.
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14
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Jaster R, Gupta Y, Rohde S, Ehlers L, Nizze H, Vorobyev A, Ludwig RJ, Ibrahim SM. Impact of diet and genes on murine autoimmune pancreatitis. J Cell Mol Med 2020; 24:8862-8870. [PMID: 32643288 PMCID: PMC7412411 DOI: 10.1111/jcmm.15540] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 05/29/2020] [Accepted: 06/05/2020] [Indexed: 12/12/2022] Open
Abstract
The impact of environmental factors, such as diet, and the genetic basis of autoimmune pancreatitis (AIP) are largely unknown. Here, we used an experimental murine AIP model to identify the contribution of diet to AIP development, as well as to fine-map AIP-associated genes in outbred mice prone to develop the disease. For this purpose, we fed mice of an autoimmune-prone intercross line (AIL) three different diets (control, calorie-reduced and western diet) for 6 months, at which point the mice were genotyped and phenotyped for AIP. Overall, 269 out of 734 mice (36.6%) developed AIP with signs of parenchymal destruction, equally affecting mice of both sexes. AIP prevalence and severity were reduced by approximately 50% in mice held under caloric restriction compared to those fed control or western diet. We identified a quantitative trait locus (QTL) on chromosome 4 to be associated with AIP, which is located within a previously reported QTL. This association does not change when considering diet or sex as an additional variable for the mapping. Using whole-genome sequences of the AIL founder strains, we resolved this QTL to a single candidate gene, namely Map3k7. Expression of Map3k7 was largely restricted to islet cells as well as lymphocytes found in the exocrine pancreas of mice with AIP. Our studies suggest a major impact of diet on AIP. Furthermore, we identify Map3k7 as a novel susceptibility gene for experimental AIP. Both findings warrant clinical translation.
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Affiliation(s)
- Robert Jaster
- Department of Medicine II, Division of Gastroenterology, Rostock University Medical Center, Rostock, Germany
| | - Yask Gupta
- Lübeck Institute of Experimental Dermatology and Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
| | - Sarah Rohde
- Department of Medicine II, Division of Gastroenterology, Rostock University Medical Center, Rostock, Germany
| | - Luise Ehlers
- Department of Medicine II, Division of Gastroenterology, Rostock University Medical Center, Rostock, Germany
| | - Horst Nizze
- Institute of Pathology, Rostock University Medical Center, Rostock, Germany
| | - Artem Vorobyev
- Lübeck Institute of Experimental Dermatology and Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany.,Department of Dermatology and Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
| | - Ralf J Ludwig
- Lübeck Institute of Experimental Dermatology and Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
| | - Saleh M Ibrahim
- Lübeck Institute of Experimental Dermatology and Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
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15
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Russlies J, Fähnrich A, Witte M, Yin J, Benoit S, Gläser R, Günter C, Eming R, Erdmann J, Gola D, Gupta Y, Holtsche MM, Kern JS, König IR, Kiritsi D, Lieb W, Sadik CD, Sárdy M, Schauer F, van Beek N, Weidinger A, Worm M, Zillikens D, Schmidt E, Busch H, Ibrahim SM, Hirose M. Polymorphisms in the Mitochondrial Genome Are Associated With Bullous Pemphigoid in Germans. Front Immunol 2019; 10:2200. [PMID: 31824475 PMCID: PMC6883920 DOI: 10.3389/fimmu.2019.02200] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 08/30/2019] [Indexed: 01/06/2023] Open
Abstract
Bullous pemphigoid (BP) is the most prevalent autoimmune skin blistering disease and is characterized by the generation of autoantibodies against the hemidesmosomal proteins BP180 (type XVII collagen) and BP230. Most intriguingly, BP is distinct from other autoimmune diseases because it predominantly affects elderly individuals above the age of 75 years, raising the question why autoantibodies and the clinical lesions of BP emerges mostly in this later stage of life, even in individuals harboring known putative BP-associated germline gene variants. The mitochondrial genome (mtDNA) is a potential candidate to provide additional insights into the BP etiology; however, the mtDNA has not been extensively explored to date. Therefore, we sequenced the whole mtDNA of German BP patients (n = 180) and age- and sex-matched healthy controls (n = 188) using next generation sequencing (NGS) technology, followed by the replication study using Sanger sequencing of an additional independent BP (n = 89) and control cohort (n = 104). While the BP and control groups showed comparable mitochondrial haplogroup distributions, the haplogroup T exhibited a tendency of higher frequency in BP patients suffering from neurodegenerative diseases (ND) compared to BP patients without ND (50%; 3 in 6 BP with haplogroup T). A total of four single nucleotide polymorphisms (SNPs) in the mtDNA, namely, m.16263T>C, m.16051A>G, and m.16162A>G in the D-loop region of the mtDNA, and m.11914G>A in the mitochondrially encoded NADH:ubiquinone oxidoreductase core subunit 4 gene (MT-ND4), were found to be significantly associated with BP based on the meta-analysis of our NGS data and the Sanger sequencing data (p = 0.0017, p = 0.0129, p = 0.0076, and p = 0.0132, respectively, Peto's test). More specifically, the three SNPs in the D-loop region were negatively, and the SNP in the MT-ND4 gene was positively associated with BP. Our study is the first to interrogate the whole mtDNA in BP patients and controls and to implicate multiple novel mtDNA variants in disease susceptibility. Studies using larger cohorts and more diverse populations are warranted to explore the functional consequences of the mtDNA variants identified in this study on immune and skin cells to understand their contributions to BP pathology.
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Affiliation(s)
- Juliane Russlies
- Luebeck Institute of Experimental Dermatology, University of Luebeck, Luebeck, Germany
| | - Anke Fähnrich
- Luebeck Institute of Experimental Dermatology, University of Luebeck, Luebeck, Germany
- Institute for Cardiogenetics, University of Luebeck, Luebeck, Germany
| | - Mareike Witte
- Luebeck Institute of Experimental Dermatology, University of Luebeck, Luebeck, Germany
- Department of Dermatology, University of Luebeck, Luebeck, Germany
| | - Junping Yin
- Research Center Borstel, Leibniz-Center for Medicine and Bioscience, Borstel, Germany
| | - Sandrine Benoit
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
- The German Autoimmune Bullous Disease Genetic Study Group, Germany
| | - Regine Gläser
- The German Autoimmune Bullous Disease Genetic Study Group, Germany
- Department of Dermatology, Venereology and Allergology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Claudia Günter
- The German Autoimmune Bullous Disease Genetic Study Group, Germany
- Department of Dermatology, University Hospital of Dresden, Dresden, Germany
| | - Rüdiger Eming
- The German Autoimmune Bullous Disease Genetic Study Group, Germany
- Department of Dermatology and Allergology, Phillips-Universität Marburg, Marburg, Germany
| | - Jeanette Erdmann
- Institute for Cardiogenetics, University of Luebeck, Luebeck, Germany
| | - Damian Gola
- Institute of Medical Biometry and Statistics, University of Luebeck, Luebeck, Germany
| | - Yask Gupta
- Luebeck Institute of Experimental Dermatology, University of Luebeck, Luebeck, Germany
| | | | - Johannes S. Kern
- The German Autoimmune Bullous Disease Genetic Study Group, Germany
- Department of Dermatology, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Freiburg, Germany
- Dermatology Department, Faculty of Medicine, Dentistry and Health Sciences, The Royal Melbourne Hospital, University of Melbourne, Melbourne, VIC, Australia
| | - Inke R. König
- Institute of Medical Biometry and Statistics, University of Luebeck, Luebeck, Germany
| | - Dimitra Kiritsi
- The German Autoimmune Bullous Disease Genetic Study Group, Germany
- Department of Dermatology, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Freiburg, Germany
| | - Wolfgang Lieb
- Institute of Epidemiology, Christian-Albrecht University of Kiel, Kiel, Germany
- Popgen Biobank, Christian-Albrecht University of Kiel, Kiel, Germany
| | | | - Miklós Sárdy
- The German Autoimmune Bullous Disease Genetic Study Group, Germany
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Budapest, Hungary
- Department of Dermatology and Allergy, University Hospital, LMU Munich, Munich, Germany
| | - Franziska Schauer
- The German Autoimmune Bullous Disease Genetic Study Group, Germany
- Department of Dermatology, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Freiburg, Germany
| | - Nina van Beek
- Department of Dermatology, University of Luebeck, Luebeck, Germany
| | - Anke Weidinger
- The German Autoimmune Bullous Disease Genetic Study Group, Germany
- Department of Dermatology, Venereology and Allergology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Margitta Worm
- The German Autoimmune Bullous Disease Genetic Study Group, Germany
- Department of Dermatology, Venereology and Allergology, Allergy Center Charité, Charité Medical University Berlin, Berlin, Germany
| | - Detlef Zillikens
- Department of Dermatology, University of Luebeck, Luebeck, Germany
- The German Autoimmune Bullous Disease Genetic Study Group, Germany
| | - Enno Schmidt
- Luebeck Institute of Experimental Dermatology, University of Luebeck, Luebeck, Germany
- Department of Dermatology, University of Luebeck, Luebeck, Germany
- The German Autoimmune Bullous Disease Genetic Study Group, Germany
| | - Hauke Busch
- Luebeck Institute of Experimental Dermatology, University of Luebeck, Luebeck, Germany
- Institute for Cardiogenetics, University of Luebeck, Luebeck, Germany
| | - Saleh M. Ibrahim
- Luebeck Institute of Experimental Dermatology, University of Luebeck, Luebeck, Germany
- The German Autoimmune Bullous Disease Genetic Study Group, Germany
| | - Misa Hirose
- Luebeck Institute of Experimental Dermatology, University of Luebeck, Luebeck, Germany
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16
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Khan MS, Ibrahim SM, Adamu AA, Rahman MBA, Bakar MZA, Noordin MM, Loqman MY. Pre-grafting histological studies of skin grafts cryopreserved in α helix antarctic yeast oriented antifreeze peptide (Afp1m). Cryobiology 2019; 92:26-33. [PMID: 31580830 DOI: 10.1016/j.cryobiol.2019.09.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 09/27/2019] [Accepted: 09/28/2019] [Indexed: 10/25/2022]
Abstract
A number of living creatures in the Antarctic region have developed characteristic adaptation of cold weather by producing antifreeze proteins (AFP). Antifreeze peptide (Afp1m) fragment have been designed in the sequence of strings from native proteins. The objectives of this study were to assess the properties of Afp1m to cryopreserve skin graft at the temperature of -10 °C and -20 °C and to assess sub-zero injuries in Afp1m cryopreserved skin graft using light microscopic techniques. In the present study, a process was developed to cryopreserve Sprague-Dawley (SD) rat skin grafts with antifreeze peptide, Afp1m, α-helix peptide fragment derived from Glaciozyma antractica yeast. Its viability assessed by different microscopic techniques. This study also described the damages caused by subzero temperatures (-10 and -20 °C) on tissue cryopreserved in different concentrations of Afp1m (0.5, 1, 2, 5 and 10 mg/mL) for 72 h. Histological scores of epidermis, dermis and hypodermis of cryopreserved skin grafts showed highly significant difference (p < 0.01) among the different concentrations at -10 and -20 °C. In conclusion, the integrity of cryopreserved skin grafts with lower concentrations of Afp1m (0.5, 1 and 2 mg/mL) or at -20 °C was not maintained. The present study attested that Afp1m is a good cryoprotective agent for the cryopreservation of skin graft. Higher Afp1m concentrations (5 and 10 mg/mL) at -10 °C found to be suitable for the future in vivo study using (SD) rat skin grafts.
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Affiliation(s)
- M S Khan
- Department of Companion Animal Medicine and Surgery, Faculty of Veterinary Medicine, Universiti Putra, Malaysia; Department of Basic Veterinary Sciences, Faculty of Veterinary and Animal Sciences, Gomal University D.I.Khan, Pakistan
| | - S M Ibrahim
- Department of Companion Animal Medicine and Surgery, Faculty of Veterinary Medicine, Universiti Putra, Malaysia; Department of Surgery and Theriogenology, College of Veterinary Medicine, University of Mosul, Iraq
| | - A A Adamu
- Department of Companion Animal Medicine and Surgery, Faculty of Veterinary Medicine, Universiti Putra, Malaysia
| | - M B A Rahman
- Department of Chemistry, Faculty of Science, Universiti Putra, Malaysia
| | - M Z Abu Bakar
- Department of Pre-Clinical Veterinary Studies, Faculty of Veterinary Medicine, Universiti Putra, Malaysia
| | - M M Noordin
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra, Malaysia
| | - M Y Loqman
- Department of Companion Animal Medicine and Surgery, Faculty of Veterinary Medicine, Universiti Putra, Malaysia.
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17
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Hirose M, Schilf P, Zarse K, Busch H, Fuellen G, Jöhren O, Köhling R, König IR, Richer B, Rupp J, Schwaninger M, Seeger K, Sina C, Ristow M, Ibrahim SM. Maternally Inherited Differences within Mitochondrial Complex I Control Murine Healthspan. Genes (Basel) 2019; 10:genes10070532. [PMID: 31337008 PMCID: PMC6678443 DOI: 10.3390/genes10070532] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/02/2019] [Accepted: 07/10/2019] [Indexed: 11/16/2022] Open
Abstract
Mitochondrial complex I-the largest enzyme complex of the mitochondrial oxidative phosphorylation machinery-has been proposed to contribute to a variety of age-related pathological alterations as well as longevity. The enzyme complex-consisting proteins are encoded by both nuclear (nDNA) and mitochondrial DNA (mtDNA). While some association studies of mtDNA encoded complex I genes and lifespan in humans have been reported, experimental evidence and the functional consequence of such variants is limited to studies using invertebrate models. Here, we present experimental evidence that a homoplasmic mutation in the mitochondrially encoded complex I gene mt-Nd2 modulates lifespan by altering cellular tryptophan levels and, consequently, ageing-related pathways in mice. A conplastic mouse strain carrying a mutation at m.4738C > A in mt-Nd2 lived slightly, but significantly, shorter than the controls did. The same mutation led to a higher susceptibility to glucose intolerance induced by high-fat diet feeding. These phenotypes were not observed in mice carrying a mutation in another mtDNA encoded complex I gene, mt-Nd5, suggesting the functional relevance of particular mutations in complex I to ageing and age-related diseases.
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Affiliation(s)
- Misa Hirose
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany
| | - Paul Schilf
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany
| | - Kim Zarse
- Energy Metabolism Laboratory, Institute of Translational Medicine, Swiss Federal Institute of Technology (ETH) Zurich, 8603 Schwerzenbach, Switzerland
| | - Hauke Busch
- Group of Systems Biology, Institute of Cardiogenetics and Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany
| | - Georg Fuellen
- Institute for Biostatistics and Informatics in Medicine and Ageing Research, Rostock University Medical Center, 18057 Rostock, Germany
| | - Olaf Jöhren
- Center of Brain, Behavior & Metabolism, University of Luebeck, 23562 Luebeck, Germany
| | - Rüdiger Köhling
- Oscar Langendorff Institute of Physiology, Rostock University Medical Center, 18057 Rostock, Germany
| | - Inke R König
- Institute of Medical Biometry and Statistics, University of Luebeck, 23562 Luebeck, Germany
| | - Barbara Richer
- Institute of Chemistry and Metabolomics, University of Luebeck, 23562 Luebeck, Germany
| | - Jan Rupp
- Department of Infectious Diseases and Microbiology, University of Luebeck, 23562 Luebeck, Germany
| | - Markus Schwaninger
- Institute of Experimental and Clinical Pharmacology and Toxicology, University of Luebeck, 23562 Luebeck, Germany
| | - Karsten Seeger
- Institute of Chemistry and Metabolomics, University of Luebeck, 23562 Luebeck, Germany
| | - Christian Sina
- Institute for Nutritional Medicine, University of Luebeck, 23562 Luebeck, Germany
| | - Michael Ristow
- Energy Metabolism Laboratory, Institute of Translational Medicine, Swiss Federal Institute of Technology (ETH) Zurich, 8603 Schwerzenbach, Switzerland
| | - Saleh M Ibrahim
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany.
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18
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Hirose M, Künstner A, Schilf P, Tietjen AK, Jöhren O, Huebbe P, Rimbach G, Rupp J, Schwaninger M, Busch H, Ibrahim SM. A Natural mtDNA Polymorphism in Complex III Is a Modifier of Healthspan in Mice. Int J Mol Sci 2019; 20:E2359. [PMID: 31085998 PMCID: PMC6539666 DOI: 10.3390/ijms20092359] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 05/03/2019] [Accepted: 05/09/2019] [Indexed: 02/06/2023] Open
Abstract
In this study, we provide experimental evidence that a maternally inherited polymorphism in the mitochondrial cytochrome b gene (mt-Cytb; m.15124A>G, Ile-Val) in mitochondrial complex III resulted in middle-aged obesity and higher susceptibility to diet-induced obesity, as well as age-related inflammatory disease, e.g., ulcerative dermatitis, in mice. As a consequence of the gene variation, we observed alterations in body composition, metabolism and mitochondrial functions, i.e., increased mitochondrial oxygen consumption rate and higher levels of reactive oxygen species, as well as in the commensal bacterial composition in the gut, with higher abundance of Proteobacteria in mice carrying the variant. These observations are in line with the previously described links of the mitochondrial complex III gene with obesity and metabolic diseases in humans. Given that these functional changes by the G variant at m.15124 in the mt-Cytb are already present in young mice that were kept under normal condition, it is plausible that the m.15124A>G variant is a disease susceptibility modifier to the diseases induced by additional stressors, i.e., dietary and/or aging stress, and that the variant results in the higher incidence of clinical diseases presentation in C57BL/6J-mt129S1/SvlmJ than C57BL/6J mice. Thus, mtDNA variants could be potential biomarkers to evaluate the healthspan.
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Affiliation(s)
- Misa Hirose
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany.
| | - Axel Künstner
- Luebeck Institute of Experimental Dermatology and Institute for Cardiogenetics, University of Luebeck, 23562 Luebeck, Germany.
| | - Paul Schilf
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany.
| | - Anna Katharina Tietjen
- Luebeck Institute of Experimental Dermatology, University of Luebeck, 23562 Luebeck, Germany.
| | - Olaf Jöhren
- Center of Brain, Behavior & Metabolism, University of Luebeck, 23562 Luebeck, Germany.
| | - Patricia Huebbe
- Institute of Human Nutrition and Food Science, University of Kiel, 24098 Kiel, Germany.
| | - Gerald Rimbach
- Institute of Human Nutrition and Food Science, University of Kiel, 24098 Kiel, Germany.
| | - Jan Rupp
- Department of Infectious Disease and Microbiology, University of Luebeck, 23562 Luebeck, Germany.
| | - Markus Schwaninger
- Institute of Experimental and Clinical Pharmacology and Toxicology, University of Luebeck, 23562 Luebeck, Germany.
| | - Hauke Busch
- Luebeck Institute of Experimental Dermatology, Institute for Cardiogenetics and Center for research of inflammatory skin disease (CRIS), University of Luebeck, 23562 Luebeck, Germany.
| | - Saleh M Ibrahim
- Luebeck Institute of Experimental Dermatology and Center for research of inflammatory skin disease (CRIS), University of Luebeck, 23562 Luebeck, Germany.
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19
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Langan EA, Künstner A, Miodovnik M, Zillikens D, Thaçi D, Baines JF, Ibrahim SM, Solbach W, Knobloch JK. Combined culture and metagenomic analyses reveal significant shifts in the composition of the cutaneous microbiome in psoriasis. Br J Dermatol 2019; 181:1254-1264. [PMID: 30985920 DOI: 10.1111/bjd.17989] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND The treatment of psoriasis has been revolutionized by the development of biologic therapies. However, the pathogenesis of psoriasis, in particular the role of the cutaneous microbiome, remains incompletely understood. Moreover, skin microbiome studies have relied heavily on 16S rRNA sequencing data in the absence of bacterial culture. OBJECTIVES To characterize and compare the cutaneous microbiome in 20 healthy controls and 23 patients with psoriasis using metagenomic analyses and to determine changes in the microbiome during treatment. METHODS Swabs from lesional and nonlesional skin from patients with psoriasis, and from controls matched for site and skin microenvironment, were analysed using both 16S rRNA sequencing and traditional culture combined with mass spectrometry (MALDI-TOF) in a prospective study. RESULTS Psoriasis was associated with an increased abundance of Firmicutes and a corresponding reduction in Actinobacteria, most marked in lesional skin, and at least partially reversed during systemic treatment. Shifts in bacterial community composition in lesional sites were reflected in similar changes in culturable bacteria, although changes in the microbiota over repeated swabbing were detectable only with sequencing. The composition of the microbial communities varied by skin site and microenvironment. Prevotella and Staphylococcus were significantly associated with lesional skin, and Anaerococcus and Propionibacterium with nonlesional skin. There were no significant differences in the amount of bacteria cultured from the skin of healthy controls and patients with psoriasis. CONCLUSIONS Shifts in the cutaneous microbiome in psoriasis, particularly during treatment, may shed new light on the pathogenesis of the disease and may be clinically exploited to predict treatment response. What's already known about this topic? Alterations in the composition of the cutaneous microbiome have been described in psoriasis, although methodological differences in study design prevent direct comparison of results. To date, most cutaneous microbiome studies have focused on 16S rRNA sequencing data, including both living and dead bacteria. What does this study add? This prospective observational study confirms that changes in the composition of the cutaneous microbiome, detected by 16S rRNA sequencing, are consistent with those identified by bacterial culture and mass spectrometry. The changes in the microbiome during antipsoriasis therapy should be further investigated to determine whether these represent potential novel biomarkers of treatment response. What is the translational message? Characterization of cutaneous microbiota may ultimately move into the clinic to help facilitate treatment selection, not only by optimizing currently available treatments, but also by identifying new therapeutic targets.
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Affiliation(s)
- E A Langan
- Department of Dermatology, Allergology and Venereology, University of Lübeck, Lübeck, Germany.,Institute for Inflammation Research, University of Manchester, Manchester, U.K
| | - A Künstner
- Group of Medical Systems Biology, Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.,Institute for Cardiogenetics, University of Lübeck, Lübeck, Germany
| | - M Miodovnik
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - D Zillikens
- Department of Dermatology, Allergology and Venereology, University of Lübeck, Lübeck, Germany
| | - D Thaçi
- Centre for Inflammation Medicine, University of Lübeck, Lübeck, Germany
| | - J F Baines
- Institute for Experimental Medicine, Kiel University, Kiel and Max Planck Institute for Evolutionary Biology, Plön, Germany
| | - S M Ibrahim
- Group of Medical Systems Biology, Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - W Solbach
- University of Lübeck, Lübeck, Germany
| | - J K Knobloch
- Institute for Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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20
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Numan AI, Bukar M, Usman HA, Ibrahim SM. Cervical ectopic pregnancy patient treated with intramuscular methotrexate who subsequently had live birth: A case report and literature review. Trop J Obstet Gynaecol 2019. [DOI: 10.4103/tjog.tjog_46_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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21
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Chakievska L, Holtsche MM, Künstner A, Goletz S, Petersen BS, Thaci D, Ibrahim SM, Ludwig RJ, Franke A, Sadik CD, Zillikens D, Hölscher C, Busch H, Schmidt E. IL-17A is functionally relevant and a potential therapeutic target in bullous pemphigoid. J Autoimmun 2018; 96:104-112. [PMID: 30219389 DOI: 10.1016/j.jaut.2018.09.003] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/04/2018] [Accepted: 09/07/2018] [Indexed: 01/19/2023]
Abstract
IL-17A has been identified as key regulatory molecule in several autoimmune and chronic inflammatory diseases followed by the successful use of anti-IL-17 therapy, e.g. in ankylosing spondylitis and psoriasis. Bullous pemphigoid (BP) is the most frequent autoimmune blistering disease with a high need for more specific, effective and safe treatment options. The aim of this study was to clarify the pathophysiological importance of IL-17A in BP. We found elevated numbers of IL-17A+ CD4+ lymphocytes in the peripheral blood of BP patients and identified CD3+ cells as major source of IL-17A in early BP skin lesions. IL17A and related genes were upregulated in BP skin and exome sequencing of 51 BP patients revealed mutations in twelve IL-17-related genes in 18 patients. We have subsequently found several lines of evidence suggesting a significant role of IL-17A in the BP pathogenesis: (i) IL-17A activated human neutrophils in vitro, (ii) inhibition of dermal-epidermal separation in cryosections of human skin incubated with anti-BP180 IgG and subsequently with anti-IL-17A IgG-treated leukocytes, (iii) close correlation of serum IL-17A levels and diseases activity in a mouse model of BP, (iv) IL17A-deficient mice were protected against autoantibody-induced BP, and (v) pharmacological inhibition of lL-17A reduced the induction of BP in mice. Our data give evidence for a pivotal role of IL-17A in the pathophysiology of BP and advocate IL-17A inhibition as potential novel treatment for this disease.
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Affiliation(s)
- Lenche Chakievska
- Lübeck Institute for Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Maike M Holtsche
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Axel Künstner
- Lübeck Institute for Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Stephanie Goletz
- Lübeck Institute for Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | | | - Diamant Thaci
- Institute for Inflammation Medicine, University of Lübeck, Lübeck, Germany
| | - Saleh M Ibrahim
- Lübeck Institute for Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Ralf J Ludwig
- Lübeck Institute for Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Andre Franke
- Institute of Clinical Molecular Biology, University of Kiel, Kiel, Germany
| | | | - Detlef Zillikens
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Christoph Hölscher
- Division of Infection Immunology, Research Center Borstel, Borstel, Germany
| | - Hauke Busch
- Lübeck Institute for Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Enno Schmidt
- Lübeck Institute for Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany; Department of Dermatology, University of Lübeck, Lübeck, Germany.
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22
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Hirose M, Schilf P, Gupta Y, Zarse K, Künstner A, Fähnrich A, Busch H, Yin J, Wright MN, Ziegler A, Vallier M, Belheouane M, Baines JF, Tautz D, Johann K, Oelkrug R, Mittag J, Lehnert H, Othman A, Jöhren O, Schwaninger M, Prehn C, Adamski J, Shima K, Rupp J, Häsler R, Fuellen G, Köhling R, Ristow M, Ibrahim SM. Low-level mitochondrial heteroplasmy modulates DNA replication, glucose metabolism and lifespan in mice. Sci Rep 2018; 8:5872. [PMID: 29651131 PMCID: PMC5897405 DOI: 10.1038/s41598-018-24290-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 03/29/2018] [Indexed: 01/07/2023] Open
Abstract
Mutations in mitochondrial DNA (mtDNA) lead to heteroplasmy, i.e., the intracellular coexistence of wild-type and mutant mtDNA strands, which impact a wide spectrum of diseases but also physiological processes, including endurance exercise performance in athletes. However, the phenotypic consequences of limited levels of naturally arising heteroplasmy have not been experimentally studied to date. We hence generated a conplastic mouse strain carrying the mitochondrial genome of an AKR/J mouse strain (B6-mtAKR) in a C57BL/6 J nuclear genomic background, leading to >20% heteroplasmy in the origin of light-strand DNA replication (OriL). These conplastic mice demonstrate a shorter lifespan as well as dysregulation of multiple metabolic pathways, culminating in impaired glucose metabolism, compared to that of wild-type C57BL/6 J mice carrying lower levels of heteroplasmy. Our results indicate that physiologically relevant differences in mtDNA heteroplasmy levels at a single, functionally important site impair the metabolic health and lifespan in mice.
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Affiliation(s)
- Misa Hirose
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Paul Schilf
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Yask Gupta
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Kim Zarse
- Energy Metabolism Laboratory, Institute of Translational Medicine, Swiss Federal Institute of Technology (ETH) Zurich, Schwerzenbach, Switzerland
| | - Axel Künstner
- Medical Systems Biology Group, Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
- Institute for Cardiogenetics, University of Lübeck, Lübeck, Germany
| | - Anke Fähnrich
- Medical Systems Biology Group, Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
- Institute for Cardiogenetics, University of Lübeck, Lübeck, Germany
| | - Hauke Busch
- Medical Systems Biology Group, Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
- Institute for Cardiogenetics, University of Lübeck, Lübeck, Germany
| | - Junping Yin
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Marvin N Wright
- Institute of Medical Biometry and Statistics, University of Lübeck, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
- Leibniz Institute for Prevention Research and Epidemiology, BIPS GmbH, Department Biometry and Data Management, Unit Statistical Methods in Genetics and Live-Course Epidemiology, Bremen, Germany
| | | | - Marie Vallier
- Max Planck Institute for Evolutionary Biology, Evolutionary Genomics, Plön, Germany
| | - Meriem Belheouane
- Max Planck Institute for Evolutionary Biology, Evolutionary Genomics, Plön, Germany
| | - John F Baines
- Max Planck Institute for Evolutionary Biology, Evolutionary Genomics, Plön, Germany
- Institute for Experimental Medicine, Section of Evolutionary Medicine, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Diethard Tautz
- Max Planck Institute for Evolutionary Biology, Evolutionary Genomics, Plön, Germany
| | - Kornelia Johann
- Center of Brain Behavior & Metabolism, Molecular Endocrinology, University of Lübeck, Lübeck, Germany
| | - Rebecca Oelkrug
- Center of Brain Behavior & Metabolism, Molecular Endocrinology, University of Lübeck, Lübeck, Germany
| | - Jens Mittag
- Center of Brain Behavior & Metabolism, Molecular Endocrinology, University of Lübeck, Lübeck, Germany
| | - Hendrik Lehnert
- Center of Brain Behavior & Metabolism, Clinical Endocrinology and Metabolism, University of Lübeck, Lübeck, Germany
| | - Alaa Othman
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany
- Center of Brain, Behavior & Metabolism, University of Lübeck, Lübeck, Germany
| | - Olaf Jöhren
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany
| | - Markus Schwaninger
- Center of Brain, Behavior & Metabolism, University of Lübeck, Lübeck, Germany
| | - Cornelia Prehn
- Helmholtz Center, German Research Center for Environmental Health, Institute of Experimental Genetics, Genome Analysis Center, Neuherberg, Germany
| | - Jerzy Adamski
- Helmholtz Center, German Research Center for Environmental Health, Institute of Experimental Genetics, Genome Analysis Center, Neuherberg, Germany
| | - Kensuke Shima
- Department of Infectious Disease and Microbiology, University of Lübeck, Lübeck, Germany
| | - Jan Rupp
- Department of Infectious Disease and Microbiology, University of Lübeck, Lübeck, Germany
| | - Robert Häsler
- Institute of Clinical Molecular Biology, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Georg Fuellen
- Institute for Biostatistics and Informatics in Medicine and Ageing Research, Rostock University Medical Center, Rostock, Germany
| | - Rüdiger Köhling
- Oscar-Langendorff-Institute of Physiology, Rostock University Medical Center, Rostock University, Rostock, Germany
| | - Michael Ristow
- Energy Metabolism Laboratory, Institute of Translational Medicine, Swiss Federal Institute of Technology (ETH) Zurich, Schwerzenbach, Switzerland.
| | - Saleh M Ibrahim
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.
- College of Medicine and Sharjah Institute for Medical Research, University of Sharjah, Sharjah, United Arab Emirates.
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23
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Samavedam UK, Mitschker N, Kasprick A, Bieber K, Schmidt E, Laskay T, Recke A, Goletz S, Vidarsson G, Schulze FS, Armbrust M, Schulze Dieckhoff K, Pas HH, Jonkman MF, Kalies K, Zillikens D, Gupta Y, Ibrahim SM, Ludwig RJ. Whole-Genome Expression Profiling in Skin Reveals SYK As a Key Regulator of Inflammation in Experimental Epidermolysis Bullosa Acquisita. Front Immunol 2018; 9:249. [PMID: 29497423 PMCID: PMC5818881 DOI: 10.3389/fimmu.2018.00249] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 01/29/2018] [Indexed: 12/31/2022] Open
Abstract
Because of the morbidity and limited therapeutic options of autoimmune diseases, there is a high, and thus far, unmet medical need for development of novel treatments. Pemphigoid diseases, such as epidermolysis bullosa acquisita (EBA), are prototypical autoimmune diseases that are caused by autoantibodies targeting structural proteins of the skin, leading to inflammation, mediated by myeloid cells. To identify novel treatment targets, we performed cutaneous genome-wide mRNA expression profiling in 190 outbred mice after EBA induction. Comparison of genome-wide mRNA expression profiles in diseased and healthy mice, and construction of a co-expression network identified Sykb (spleen tyrosine kinase, SYK) as a major hub gene. Aligned, pharmacological SYK inhibition protected mice from experimental EBA. Using lineage-specific SYK-deficient mice, we identified SYK expression on myeloid cells to be required to induce EBA. Within the predicted co-expression network, interactions of Sykb with several partners (e.g., Tlr13, Jdp2, and Nfkbid) were validated by curated databases. Additionally, novel gene interaction partners of SYK were experimentally validated. Collectively, our results identify SYK expression in myeloid cells as a requirement to promote inflammation in autoantibody-driven pathologies. This should encourage exploitation of SYK and SYK-regulated genes as potential therapeutic targets for EBA and potentially other autoantibody-mediated diseases.
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Affiliation(s)
- Unni K Samavedam
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Nina Mitschker
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Anika Kasprick
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Katja Bieber
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Enno Schmidt
- Department of Dermatology, University of Lübeck, Lübeck, Germany.,Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Tamás Laskay
- Institute for Medical Microbiology and Hygiene, University of Lübeck, Lübeck, Germany
| | - Andreas Recke
- Department of Dermatology, University of Lübeck, Lübeck, Germany.,Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - S Goletz
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Gestur Vidarsson
- Department of Experimental Hematology, Sanquin Research Institute, Amsterdam, Netherlands
| | - Franziska S Schulze
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Mikko Armbrust
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | | | - Hendri H Pas
- Center for Blistering Diseases, Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Marcel F Jonkman
- Center for Blistering Diseases, Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Kathrin Kalies
- Institute of Anatomy, University of Lübeck, Lübeck, Germany
| | - Detlef Zillikens
- Department of Dermatology, University of Lübeck, Lübeck, Germany.,Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Yask Gupta
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Saleh M Ibrahim
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Ralf J Ludwig
- Department of Dermatology, University of Lübeck, Lübeck, Germany.,Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
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24
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Kretzschmar C, Roolf C, Timmer K, Sekora A, Knübel G, Murua Escobar H, Fuellen G, Ibrahim SM, Tiedge M, Baltrusch S, Jaster R, Köhling R, Junghanss C. Polymorphisms of the murine mitochondrial ND4, CYTB and COX3 genes impact hematopoiesis during aging. Oncotarget 2018; 7:74460-74472. [PMID: 27626489 PMCID: PMC5342679 DOI: 10.18632/oncotarget.11952] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 09/02/2016] [Indexed: 12/16/2022] Open
Abstract
During aging, mitochondrial DNA (mtDNA) can accumulate mutations leading to increasing levels of reactive oxygen species (ROS). Increased ROS were described to activate formerly quiescent hematopoietic stem cells (HSC). Mutations in mtDNA were shown to enhance the risk for myelodysplastic syndrome and leukemia. However, the complex relationship between mtDNA variations, ROS and aging of the hematopoietic system is not fully understood. Herein, three mouse strains with mtDNA polymorphisms in genes of respiratory chain complexes I (ND4), III (CYTB) and IV (COX3) were compared to a reference strain during aging. Analysis focused on ROS and ATP levels, bone marrow composition and blood counts. Additionally, hematopoietic restoration capacity following cytotoxic stress was tested. Mice with polymorphisms in ND4 and CYTB gene had significantly decreasing ROS levels in bone marrow cells during aging, without effecting ATP levels. In addition, the frequency of stem and progenitor cells increased during aging but the amount of lymphocytes in the peripheral blood decreased during aging. In summary, the presence of mtDNA polymorphisms affecting the respiratory chain complexes I, III and IV was associated with altered ROS levels as well as changes in BM and peripheral blood composition during aging.
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Affiliation(s)
- Christin Kretzschmar
- Department of Medicine III - Hematology/Oncology/Palliative Care, Rostock University Medical Center, Rostock, Germany
| | - Catrin Roolf
- Department of Medicine III - Hematology/Oncology/Palliative Care, Rostock University Medical Center, Rostock, Germany
| | - Katrin Timmer
- Department of Medicine III - Hematology/Oncology/Palliative Care, Rostock University Medical Center, Rostock, Germany
| | - Anett Sekora
- Department of Medicine III - Hematology/Oncology/Palliative Care, Rostock University Medical Center, Rostock, Germany
| | - Gudrun Knübel
- Department of Medicine III - Hematology/Oncology/Palliative Care, Rostock University Medical Center, Rostock, Germany
| | - Hugo Murua Escobar
- Department of Medicine III - Hematology/Oncology/Palliative Care, Rostock University Medical Center, Rostock, Germany
| | - Georg Fuellen
- Institute for Biostatistics and Informatics in Medicine and Ageing Research, Rostock University Medical Center, Rostock, Germany
| | - Saleh M Ibrahim
- Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Markus Tiedge
- Institute of Medical Biochemistry and Molecular Biology, Rostock University Medical Center, Rostock, Germany
| | - Simone Baltrusch
- Institute of Medical Biochemistry and Molecular Biology, Rostock University Medical Center, Rostock, Germany
| | - Robert Jaster
- Department of Medicine II, Division of Gastroenterology, Rostock University Medical Center, Rostock, Germany
| | - Rüdiger Köhling
- Oscar Langendorff Institute of Physiology, Rostock University Medical Center, Rostock, Germany
| | - Christian Junghanss
- Department of Medicine III - Hematology/Oncology/Palliative Care, Rostock University Medical Center, Rostock, Germany
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25
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Roolf C, Kretzschmar C, Timmer K, Sekora A, Knübel G, Murua Escobar H, Fuellen G, Ibrahim SM, Tiedge M, Baltrusch S, Müller S, Köhling R, Junghanss C. Polymorphism in Murine mtATP8 Gene Correlates with Decreased Reactive Oxygen Species in Aging Hematopoietic Cells. In Vivo 2018; 30:751-760. [PMID: 27815458 DOI: 10.21873/invivo.10991] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 09/16/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND Mitochondrial DNA (mtDNA) encodes for the respiratory chain proteins. Genetic alterations in mtDNA have been described during aging and linked to impaired hematopoiesis. MATERIALS AND METHODS We investigated two novel conplastic mouse strains harboring a mitochondrial nt7778 G/T polymorphism leading to an amino acid exchange in respiratory chain complex V. Effects on reactive oxygen species (ROS) and adenosine triphosphate (ATP) levels, as well as bone marrow composition and peripheral blood counts, were investigated during aging (up to 24 month). RESULTS The polymorphism correlated with significantly decreased ROS levels in aged mice. Effects on hematopoiesis were marginal and not statistically significant: numbers of erythroid cells in bone marrow, as well as mean corpuscular hemoglobin, tended to decrease over time. CONCLUSION The investigated polymorphism is associated with decreased ROS levels in aged hematopoietic cells but does not significantly influence hematopoiesis itself.
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Affiliation(s)
- Catrin Roolf
- Department of Medicine III, Hematology/Oncology/Palliative Medicine, Rostock University Medical Center, Rostock, Germany
| | - Christin Kretzschmar
- Department of Medicine III, Hematology/Oncology/Palliative Medicine, Rostock University Medical Center, Rostock, Germany
| | - Katrin Timmer
- Department of Medicine III, Hematology/Oncology/Palliative Medicine, Rostock University Medical Center, Rostock, Germany
| | - Anett Sekora
- Department of Medicine III, Hematology/Oncology/Palliative Medicine, Rostock University Medical Center, Rostock, Germany
| | - Gudrun Knübel
- Department of Medicine III, Hematology/Oncology/Palliative Medicine, Rostock University Medical Center, Rostock, Germany
| | - Hugo Murua Escobar
- Department of Medicine III, Hematology/Oncology/Palliative Medicine, Rostock University Medical Center, Rostock, Germany
| | - Georg Fuellen
- Institute of Biostatistics and Informatics in Medicine and Ageing Research, Rostock University Medical Center, Rostock, Germany
| | - Saleh M Ibrahim
- Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Markus Tiedge
- Institute of Medical Biochemistry and Molecular Biology, Rostock University Medical Center, Rostock, Germany
| | - Simone Baltrusch
- Institute of Medical Biochemistry and Molecular Biology, Rostock University Medical Center, Rostock, Germany
| | - Sarah Müller
- Department of Medicine II, Division of Gastroenterology, Rostock University Medical Center, Rostock, Germany
| | - Rüdiger Köhling
- Oscar Langendorff Institute of Physiology, Rostock University Medical Center, Rostock, Germany
| | - Christian Junghanss
- Department of Medicine III, Hematology/Oncology/Palliative Medicine, Rostock University Medical Center, Rostock, Germany
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26
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Sadik CD, Bischof J, van Beek N, Dieterich A, Benoit S, Sárdy M, Worm M, Meller S, Gläser R, Zillikens D, Homey B, Setterfield J, Minassian D, Schmidt E, Dart J, Ibrahim SM. Genomewide association study identifies GALC
as susceptibility gene for mucous membrane pemphigoid. Exp Dermatol 2017; 26:1214-1220. [DOI: 10.1111/exd.13464] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/07/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Christian D. Sadik
- Department of Dermatology, Allergy, and Venereology; University of Lübeck; Lübeck Germany
| | - Julia Bischof
- Lübeck Institute of Experimental Dermatology; University of Lübeck; Lübeck Germany
| | - Nina van Beek
- Department of Dermatology, Allergy, and Venereology; University of Lübeck; Lübeck Germany
| | - Anabelle Dieterich
- Department of Dermatology, Allergy, and Venereology; University of Lübeck; Lübeck Germany
| | - Sandrine Benoit
- Department of Dermatology, Venereology and Allergology; University Hospital Würzburg; Würzburg Germany
| | - Miklós Sárdy
- Department of Dermatology and Allergy; Ludwig Maximilian University; Munich Germany
| | - Margitta Worm
- Department of Dermatology, Allergy, and Venereology; Charité; Berlin Germany
| | - Stephan Meller
- Department of Dermatology; Heinrich Heine University; Düsseldorf Germany
| | - Regine Gläser
- Department of Dermatology, Venereology, and Allergy; Christian Albrechts University zu Kiel; Kiel Germany
| | - Detlef Zillikens
- Department of Dermatology, Allergy, and Venereology; University of Lübeck; Lübeck Germany
| | - Bernhard Homey
- Department of Dermatology; Heinrich Heine University; Düsseldorf Germany
| | - Jane Setterfield
- Guy's and St Thomas's NHS Foundation Trust and King's College London; London UK
| | | | - Enno Schmidt
- Lübeck Institute of Experimental Dermatology; University of Lübeck; Lübeck Germany
| | - John Dart
- Moorfields Eye Hospital NHS Foundation Trust and the UCL Institute of Ophthalmology; London UK
| | - Saleh M. Ibrahim
- Lübeck Institute of Experimental Dermatology; University of Lübeck; Lübeck Germany
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27
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Hirose M, Schilf P, Rohde S, Gupta Y, Sancerni T, Alves-Guerra MC, Sina C, Jaster R, Miroux B, Ibrahim SM. The mitochondrial uncoupling protein 2 gene is causal for the spontaneous polycystic liver diseases in mice. Mitochondrion 2017; 42:50-53. [PMID: 29154852 DOI: 10.1016/j.mito.2017.10.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 10/12/2017] [Accepted: 10/26/2017] [Indexed: 11/15/2022]
Abstract
Polycystic liver diseases (PCLDs) are autosomal dominant disorders. To date, 3 genes are known to be associated with the disease, SEC63 and PRKCSH and LRP5. Here, we report that mice deficient in the mitochondrial uncoupling protein 2 gene (Ucp2-/-) spontaneously developed PCLDs when they were over 12months old. Macroscopical observation, blood chemistry as well as histopathological analysis demonstrated the PCLDs found in Ucp2-/- mice were very similar to the findings in human PCLDs. This is the first report describing the gene encoding mitochondrial protein is causative for PCLDs. UCP2 may be a biomarker of the PCLDs in humans.
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Affiliation(s)
- Misa Hirose
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Germany
| | - Paul Schilf
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Germany
| | - Sarah Rohde
- Division of Gastroenterology, Department of Medicine II, University Medicine Rostock, Rostock, Germany
| | - Yask Gupta
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Germany
| | - Tiphaine Sancerni
- Inserm, U1016, Institut Cochin; Paris Cedex 75014, France; CNRS UMR 8104, Paris Cedex, 75014, France; Université Paris Diderot, Paris Cedex 75014, France
| | - Marie-Clotilde Alves-Guerra
- Inserm, U1016, Institut Cochin; Paris Cedex 75014, France; CNRS UMR 8104, Paris Cedex, 75014, France; Université Paris Descartes UMRS1016, Paris Cedex 75014, France
| | - Christian Sina
- Institute for Nutritional Medicine, University of Lübeck, Lübeck, Germany
| | - Robert Jaster
- Division of Gastroenterology, Department of Medicine II, University Medicine Rostock, Rostock, Germany
| | - Bruno Miroux
- Institute of Physical and Chemical Biology, UMR 7099, CNRS, University Paris-Diderot, Sorbonne Paris Cités, Paris, France
| | - Saleh M Ibrahim
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Germany; College of Medicine, Sharjah Institute for Medical Research, University of Sharjah, AE-27272, United Arab Emirates.
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28
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Hirose M, Künstner A, Schilf P, Sünderhauf A, Rupp J, Jöhren O, Schwaninger M, Sina C, Baines JF, Ibrahim SM. Mitochondrial gene polymorphism is associated with gut microbial communities in mice. Sci Rep 2017; 7:15293. [PMID: 29127319 PMCID: PMC5681637 DOI: 10.1038/s41598-017-15377-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 10/25/2017] [Indexed: 02/08/2023] Open
Abstract
Gut microbial communities are key mediators of health and disease and have the capacity to drive the pathogenesis of diverse complex diseases including metabolic and chronic inflammatory diseases as well as aging. Host genetics is also a major determinant of disease phenotypes, whereby two different genomes play a role, the nuclear (nDNA)- and mitochondrial genome (mtDNA). We investigated the impact of mutations in mtDNA on the gut microbiota using conplastic mouse strains exhibiting distinct mutations in their mtDNA on an identical nDNA. Each of three strain tested harbors a distinct gut microbiota, ranging from differences at the phylum- to operational taxonomic units level. The C57BL/6J-mt FVB/NJ strain, carrying a mutation in the mitochondrial ATP8 synthase gene, exhibits higher Firmicutes abundance than Bacteroidetes, indicating a possible indicative for metabolic dysfunctions. In line with this, the C57BL/6J-mt FVB/NJ displays a variety of different phenotypes, including increased susceptibility to metabolic-related and inflammatory disorders. Furthermore, we discuss the cross-talk between mitochondrial genome/mitochondria and commensal microbiota in relation to clinical phenotypes. In summary, we demonstrate that mutations in mtDNA lead to significant differences in the composition of gut microbial communities in mice. Such differences may facilitate the emergence of metabolic disease and therefore constitute potential therapeutic targets.
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Affiliation(s)
- Misa Hirose
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Axel Künstner
- Group for Medical Systems Biology, Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
- Institute of Cardiogenetics, University of Lübeck, Lübeck, Germany
- Max Planck Institute for Evolutionary Biology, Evolutionary Genomics, Plön, Germany
| | - Paul Schilf
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Annika Sünderhauf
- Institute of Nutritional Medicine, University of Lübeck, Lübeck, Germany
| | - Jan Rupp
- Department of Infectious Diseases and Microbiology, University of Lübeck, Lübeck, Germany
| | - Olaf Jöhren
- Center of Brain, Behavior and Metabolism, University of Lübeck, Lübeck, Germany
| | - Markus Schwaninger
- Institute of Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany
| | - Christian Sina
- Institute of Nutritional Medicine, University of Lübeck, Lübeck, Germany
| | - John F Baines
- Max Planck Institute for Evolutionary Biology, Evolutionary Genomics, Plön, Germany
- Institute for Experimental Medicine, Evolutionary Genomics, Kiel, Germany
| | - Saleh M Ibrahim
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.
- College of Medicine and Sharjah Institute for Medical Research, University of Sharjah, Sharjah, United Arab Emirates.
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29
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Miodovnik M, Künstner A, Langan EA, Zillikens D, Gläser R, Sprecher E, Baines JF, Schmidt E, Ibrahim SM. A distinct cutaneous microbiota profile in autoimmune bullous disease patients. Exp Dermatol 2017; 26:1221-1227. [DOI: 10.1111/exd.13357] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/04/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Mor Miodovnik
- Department of Dermatology; Tel Aviv Sourasky Medical Center; Tel Aviv Israel
| | - Axel Künstner
- Lübeck Institute of Experimental Dermatology (LIED); University of Lübeck; Lübeck Germany
- Max Planck Institute for Evolutionary Biology; Plön Germany
| | - Ewan A. Langan
- Institute of Medical Microbiology und Hygiene; University of Lübeck; Lübeck Germany
- Department of Dermatological Science; Division of Musculoskeletal & Dermatological Sciences; University of Manchester; Manchester UK
- Department of Dermatology; University of Lübeck; Lübeck Germany
| | - Detlef Zillikens
- Lübeck Institute of Experimental Dermatology (LIED); University of Lübeck; Lübeck Germany
- Department of Dermatology; University of Lübeck; Lübeck Germany
| | - Regine Gläser
- Department of Dermatology; Christian-Albrechts-University of Kiel; Kiel Germany
| | - Eli Sprecher
- Department of Dermatology; Tel Aviv Sourasky Medical Center; Tel Aviv Israel
| | - John F. Baines
- Max Planck Institute for Evolutionary Biology; Plön Germany
- Institute for Experimental Medicine; Christian-Albrechts-University of Kiel; Kiel Germany
| | - Enno Schmidt
- Lübeck Institute of Experimental Dermatology (LIED); University of Lübeck; Lübeck Germany
- Department of Dermatology; University of Lübeck; Lübeck Germany
| | - Saleh M. Ibrahim
- Lübeck Institute of Experimental Dermatology (LIED); University of Lübeck; Lübeck Germany
- Department of Dermatology; University of Lübeck; Lübeck Germany
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30
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Pagel R, Bär F, Schröder T, Sünderhauf A, Künstner A, Ibrahim SM, Autenrieth SE, Kalies K, König P, Tsang AH, Bettenworth D, Divanovic S, Lehnert H, Fellermann K, Oster H, Derer S, Sina C. Circadian rhythm disruption impairs tissue homeostasis and exacerbates chronic inflammation in the intestine. FASEB J 2017; 31:4707-4719. [PMID: 28710114 DOI: 10.1096/fj.201700141rr] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 06/27/2017] [Indexed: 12/19/2022]
Abstract
Endogenous circadian clocks regulate 24-h rhythms of physiology and behavior. Circadian rhythm disruption (CRD) is suggested as a risk factor for inflammatory bowel disease. However, the underlying molecular mechanisms remain unknown. Intestinal biopsies from Per1/2 mutant and wild-type (WT) mice were investigated by electron microscopy, immunohistochemistry, and bromodeoxyuridine pulse-chase experiments. TNF-α was injected intraperitoneally, with or without necrostatin-1, into Per1/2 mice or rhythmic and externally desynchronized WT mice to study intestinal epithelial cell death. Experimental chronic colitis was induced by oral administration of dextran sodium sulfate. In vitro, caspase activity was assayed in Per1/2-specific small interfering RNA-transfected cells. Wee1 was overexpressed to study antiapoptosis and the cell cycle. Genetic ablation of circadian clock function or environmental CRD in mice increased susceptibility to severe intestinal inflammation and epithelial dysregulation, accompanied by excessive necroptotic cell death and a reduced number of secretory epithelial cells. Receptor-interacting serine/threonine-protein kinase (RIP)-3-mediated intestinal necroptosis was linked to increased mitotic cell cycle arrest via Per1/2-controlled Wee1, resulting in increased antiapoptosis via cellular inhibitor of apoptosis-2. Together, our data suggest that circadian rhythm stability is pivotal for the maintenance of mucosal barrier function. CRD increases intestinal necroptosis, thus rendering the gut epithelium more susceptible to inflammatory processes.-Pagel, R., Bär, F., Schröder, T., Sünderhauf, A., Künstner, A., Ibrahim, S. M., Autenrieth, S. E., Kalies, K., König, P., Tsang, A. H., Bettenworth, D., Divanovic, S., Lehnert, H., Fellermann, K., Oster, H., Derer, S., Sina, C. Circadian rhythm disruption impairs tissue homeostasis and exacerbates chronic inflammation in the intestine.
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Affiliation(s)
- René Pagel
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Florian Bär
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Torsten Schröder
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany.,Institute of Nutritional Medicine, University Hospital Schleswig-Holstein, Lubeck, Germany.,Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Annika Sünderhauf
- Institute of Nutritional Medicine, University Hospital Schleswig-Holstein, Lubeck, Germany
| | - Axel Künstner
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.,Guest Group Evolutionary Genomics, Max Planck Institute for Evolutionary Biology, Plon, Germany
| | - Saleh M Ibrahim
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Stella E Autenrieth
- Department of Internal Medicine II, University of Tübingen, Tubingen, Germany
| | - Kathrin Kalies
- Institute of Anatomy, University of Lübeck, Lubeck, Germany
| | - Peter König
- Institute of Anatomy, University of Lübeck, Lubeck, Germany
| | - Anthony H Tsang
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Dominik Bettenworth
- Department of Medicine B, University Hospital of Münster, Munster, Germany; and
| | - Senad Divanovic
- Division of Immunobiology, Cincinnati Children's Hospital Research Foundation, University of Cincinnati, Cincinnati, Ohio, USA
| | - Hendrik Lehnert
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Klaus Fellermann
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Henrik Oster
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Stefanie Derer
- Institute of Nutritional Medicine, University Hospital Schleswig-Holstein, Lubeck, Germany
| | - Christian Sina
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany; .,Institute of Nutritional Medicine, University Hospital Schleswig-Holstein, Lubeck, Germany
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31
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Sezin T, Krajewski M, Wutkowski A, Mousavi S, Chakievska L, Bieber K, Ludwig RJ, Dahlke M, Rades D, Schulze FS, Schmidt E, Kalies K, Gupta Y, Schilf P, Ibrahim SM, König P, Schwudke D, Zillikens D, Sadik CD. The Leukotriene B4 and its Receptor BLT1 Act as Critical Drivers of Neutrophil Recruitment in Murine Bullous Pemphigoid-Like Epidermolysis Bullosa Acquisita. J Invest Dermatol 2017; 137:1104-1113. [DOI: 10.1016/j.jid.2016.12.021] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 12/23/2016] [Accepted: 12/26/2016] [Indexed: 01/13/2023]
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Niemann J, Johne C, Schröder S, Koch F, Ibrahim SM, Schultz J, Tiedge M, Baltrusch S. An mtDNA mutation accelerates liver aging by interfering with the ROS response and mitochondrial life cycle. Free Radic Biol Med 2017; 102:174-187. [PMID: 27890640 DOI: 10.1016/j.freeradbiomed.2016.11.035] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 11/10/2016] [Accepted: 11/21/2016] [Indexed: 12/31/2022]
Abstract
Mitochondrial dysfunction affects liver metabolism, but it remains unclear whether this interferes with normal liver aging. We investigated several mitochondrial pathways in hepatocytes and liver tissue from a conplastic mouse strain compared with the control C57BL/6NTac strain over 18 months of life. The C57BL/6NTac-mtNODLtJ mice differed from C57BL/6NTac mice by a point mutation in mitochondrial-encoded subunit 3 of cytochrome c oxidase. Young C57BL/6NTac-mtNODLtJ mice showed reduced mitochondrial metabolism but similar reactive oxygen species (ROS) production to C57BL/6NTac mice. Whereas ROS increased almost equally up to 9 months in both strains, different mitochondrial adaptation strategies resulted in decreasing ROS in advanced age in C57BL/6NTac mice, but persistent ROS production in C57BL/6NTac-mtNODLtJ mice. Only the conplastic strain developed elongated mitochondrial networks with artificial loop structures, depressed autophagy, high mitochondrial respiration and up-regulated antioxidative response. Our results indicate that mtDNA mutations accelerate liver ballooning degeneration and carry a serious risk of premature organ aging.
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Affiliation(s)
- Jan Niemann
- Institute of Medical Biochemistry and Molecular Biology, University of Rostock, Rostock, Germany
| | - Cindy Johne
- Institute of Medical Biochemistry and Molecular Biology, University of Rostock, Rostock, Germany
| | - Susanne Schröder
- Institute of Medical Biochemistry and Molecular Biology, University of Rostock, Rostock, Germany
| | - Franziska Koch
- Institute of Medical Biochemistry and Molecular Biology, University of Rostock, Rostock, Germany; Institute of Nutritional Physiology "Oskar Kellner","Oskar Kellner", Leibnitz Institute for Farm Animal Biology, Dummerstorf, Germany
| | - Saleh M Ibrahim
- Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Julia Schultz
- Institute of Medical Biochemistry and Molecular Biology, University of Rostock, Rostock, Germany
| | - Markus Tiedge
- Institute of Medical Biochemistry and Molecular Biology, University of Rostock, Rostock, Germany
| | - Simone Baltrusch
- Institute of Medical Biochemistry and Molecular Biology, University of Rostock, Rostock, Germany.
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Abstract
Immunoglobulins, as well as T cell receptors, play a key role in adaptive immune responses because of their ability to recognize antigens. Recent advances in next generation sequencing improved also the quality and quantity of individual B cell receptors repertoire sequencing. Unfortunately, appropriate software to exhaustively analyze repertoire data from NGS platforms without limitations of the number of sequences are lacking. Here we introduce a new R package, bcRep, which offers a platform for comprehensive analyses of B cell receptor repertoires, using IMGT/HighV-QUEST formatted data. Methods for gene usage statistics, clonotype classification, as well as diversity measures, are included. Furthermore, functions to filter datasets, to do summary statistics about mutations, as well as visualization methods, are available. To compare samples in respect of gene usage, diversity, amino acid proportions, similar sequences or clones, several functions including also distance measurements, as well as multidimensional scaling methods, are provided.
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Affiliation(s)
- Julia Bischof
- Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
- * E-mail:
| | - Saleh M. Ibrahim
- Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
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34
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Vodo D, Sarig O, Geller S, Ben-Asher E, Olender T, Bochner R, Goldberg I, Nosgorodsky J, Alkelai A, Tatarskyy P, Peled A, Baum S, Barzilai A, Ibrahim SM, Zillikens D, Lancet D, Sprecher E. Identification of a Functional Risk Variant for Pemphigus Vulgaris in the ST18 Gene. PLoS Genet 2016; 12:e1006008. [PMID: 27148741 PMCID: PMC4858139 DOI: 10.1371/journal.pgen.1006008] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Accepted: 04/05/2016] [Indexed: 12/13/2022] Open
Abstract
Pemphigus vulgaris (PV) is a life-threatening autoimmune mucocutaneous blistering disease caused by disruption of intercellular adhesion due to auto-antibodies directed against epithelial components. Treatment is limited to immunosuppressive agents, which are associated with serious adverse effects. The propensity to develop the disease is in part genetically determined. We therefore reasoned that the delineation of PV genetic basis may point to novel therapeutic strategies. Using a genome-wide association approach, we recently found that genetic variants in the vicinity of the ST18 gene confer a significant risk for the disease. Here, using targeted deep sequencing, we identified a PV-associated variant residing within the ST18 promoter region (p<0.0002; odds ratio = 2.03). This variant was found to drive increased gene transcription in a p53/p63-dependent manner, which may explain the fact that ST18 is up-regulated in the skin of PV patients. We then discovered that when overexpressed, ST18 stimulates PV serum-induced secretion of key inflammatory molecules and contributes to PV serum-induced disruption of keratinocyte cell-cell adhesion, two processes previously implicated in the pathogenesis of PV. Thus, the present findings indicate that ST18 may play a direct role in PV and consequently represents a potential target for the treatment of this disease.
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Affiliation(s)
- Dan Vodo
- Department of Dermatology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Ofer Sarig
- Department of Dermatology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - Shamir Geller
- Department of Dermatology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - Edna Ben-Asher
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Tsviya Olender
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Ron Bochner
- Department of Dermatology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - Ilan Goldberg
- Department of Dermatology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - Judith Nosgorodsky
- Department of Dermatology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - Anna Alkelai
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Pavel Tatarskyy
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Alon Peled
- Department of Dermatology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Sharon Baum
- Department of Dermatology, Sheba Medical Center, Tel-Hashomer, Israel
| | - Aviv Barzilai
- Department of Dermatology, Sheba Medical Center, Tel-Hashomer, Israel
| | - Saleh M. Ibrahim
- Institute of Experimental Dermatology, University of Luebeck, Luebeck, Germany
| | - Detlef Zillikens
- Department of Dermatology, University of Luebeck, Luebeck, Germany
| | - Doron Lancet
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Eli Sprecher
- Department of Dermatology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
- * E-mail:
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35
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Gupta Y, Möller S, Witte M, Belheouane M, Sezin T, Hirose M, Vorobyev A, Niesar F, Bischof J, Ludwig RJ, Zillikens D, Sadik CD, Restle T, Häsler R, Baines JF, Ibrahim SM. Dissecting genetics of cutaneous miRNA in a mouse model of an autoimmune blistering disease. BMC Genomics 2016; 17:112. [PMID: 26879236 PMCID: PMC4755013 DOI: 10.1186/s12864-016-2455-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Accepted: 02/09/2016] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND MicroRNAs (miRNAs) are small endogenous non-coding RNAs that control genes at post-transcriptional level. They are essential for development and tissue differentiation, and such altered miRNA expression patterns are linked to the pathogenesis of inflammation and cancer. There is evidence that miRNA expression is genetically controlled similar to the transcription of protein-coding genes and previous studies identified quantitative trait loci (QTL) for miRNA expression in the liver. So far, little attention has been paid to miRNA expression in the skin. Moreover, epistatic control of miRNA expression remains unknown. In this study, we characterize genetic regulation of cutaneous miRNA and their correlation with skin inflammation using a previously established murine autoimmune-prone advanced intercross line. RESULTS We identified in silico 42 eQTL controlling the expression of 38 cutaneous miRNAs and furthermore found two chromosomal hot-spots on chromosomes 2 and 8 that control the expression of multiple miRNAs. Moreover, for 8 miRNAs an interacting effect from pairs of SNPs was observed. Combining the constraints on genes from the statistical interaction of their loci and further using curated protein interaction networks, the number of candidate genes for association of miRNAs was reduced to a set of several genes. A cluster analysis identified miR-379 and miR-223 to be associated with EBA severity/onset, where miR-379 was observed to be associated to loci on chromosome 6. CONCLUSION The murine advanced intercross line allowed us to identify the genetic loci regulating multiple miRNA in skin. The recurrence of trans-eQTL and epistasis suggest that cutaneous miRNAs are regulated by yet an unexplored complex gene networks. Further, using co-expression analysis of miRNA expression levels we showed that multiple miRNA contribute to multiple pathways that might be involved in pathogenesis of autoimmune skin blistering disease. Specifically, we provide evidence that miRNA such as miR-223 and miR-379 may play critical role in disease progression and severity.
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Affiliation(s)
- Yask Gupta
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.
| | - Steffen Möller
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.
| | - Mareike Witte
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.
| | - Meriem Belheouane
- Max Planck Institute for Evolutionary Biology, Plön, Germany and Institute for Experimental Medicine, University of Kiel, Kiel, Germany.
| | - Tanya Sezin
- Department of Dermatology, University of Lübeck, Lübeck, Germany.
| | - Misa Hirose
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.
| | - Artem Vorobyev
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.
| | - Felix Niesar
- Institute of Molecular Medicine, University of Lübeck, Lübeck, Germany.
| | - Julia Bischof
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.
| | - Ralf J Ludwig
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.
| | - Detlef Zillikens
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany. .,Department of Dermatology, University of Lübeck, Lübeck, Germany.
| | | | - Tobias Restle
- Institute of Molecular Medicine, University of Lübeck, Lübeck, Germany.
| | | | - John F Baines
- Max Planck Institute for Evolutionary Biology, Plön, Germany and Institute for Experimental Medicine, University of Kiel, Kiel, Germany.
| | - Saleh M Ibrahim
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.
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36
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Kasperkiewicz M, Sadik CD, Bieber K, Ibrahim SM, Manz RA, Schmidt E, Zillikens D, Ludwig RJ. Epidermolysis Bullosa Acquisita: From Pathophysiology to Novel Therapeutic Options. J Invest Dermatol 2016; 136:24-33. [DOI: 10.1038/jid.2015.356] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 07/29/2015] [Accepted: 08/20/2015] [Indexed: 12/26/2022]
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Chauhan A, Weiss H, Koch F, Ibrahim SM, Vera J, Wolkenhauer O, Tiedge M. Dissecting Long-Term Glucose Metabolism Identifies New Susceptibility Period for Metabolic Dysfunction in Aged Mice. PLoS One 2015; 10:e0140858. [PMID: 26540285 PMCID: PMC4634931 DOI: 10.1371/journal.pone.0140858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 10/01/2015] [Indexed: 11/30/2022] Open
Abstract
Metabolic disorders, like diabetes and obesity, are pathogenic outcomes of imbalance in glucose metabolism. Nutrient excess and mitochondrial imbalance are implicated in dysfunctional glucose metabolism with age. We used conplastic mouse strains with defined mitochondrial DNA (mtDNA) mutations on a common nuclear genomic background, and administered a high-fat diet up to 18 months of age. The conplastic mouse strain B6-mtFVB, with a mutation in the mt-Atp8 gene, conferred β-cell dysfunction and impaired glucose tolerance after high-fat diet. To our surprise, despite of this functional deficit, blood glucose levels adapted to perturbations with age. Blood glucose levels were particularly sensitive to perturbations at the early age of 3 to 6 months. Overall the dynamics consisted of a peak between 3–6 months followed by adaptation by 12 months of age. With the help of mathematical modeling we delineate how body weight, insulin and leptin regulate this non-linear blood glucose dynamics. The model predicted a second rise in glucose between 15 and 21 months, which could be experimentally confirmed as a secondary peak. We therefore hypothesize that these two peaks correspond to two sensitive periods of life, where perturbations to the basal metabolism can mark the system for vulnerability to pathologies at later age. Further mathematical modeling may perspectively allow the design of targeted periods for therapeutic interventions and could predict effects on weight loss and insulin levels under conditions of pre-diabetic obesity.
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Affiliation(s)
- Anuradha Chauhan
- Department of Systems Biology and Bioinformatics, Institute of Computer Science, University of Rostock, Rostock, Germany. Stellenbosch Institute for Advanced Study (STIAS), Wallenberg Research Centre at Stellenbosch University, Stellenbosch, South Africa
| | - Heike Weiss
- Department of Medical Biochemistry and Molecular Biology, University of Rostock, Rostock, Germany
| | - Franziska Koch
- Department of Medical Biochemistry and Molecular Biology, University of Rostock, Rostock, Germany
| | - Saleh M. Ibrahim
- Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Julio Vera
- Department of Systems Biology and Bioinformatics, Institute of Computer Science, University of Rostock, Rostock, Germany. Stellenbosch Institute for Advanced Study (STIAS), Wallenberg Research Centre at Stellenbosch University, Stellenbosch, South Africa
| | - Olaf Wolkenhauer
- Department of Systems Biology and Bioinformatics, Institute of Computer Science, University of Rostock, Rostock, Germany. Stellenbosch Institute for Advanced Study (STIAS), Wallenberg Research Centre at Stellenbosch University, Stellenbosch, South Africa
| | - Markus Tiedge
- Department of Medical Biochemistry and Molecular Biology, University of Rostock, Rostock, Germany
- * E-mail:
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38
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Bischof J, Müller S, Borufka L, Asghari F, Möller S, Holzhüter SA, Nizze H, Ibrahim SM, Jaster R. Quantitative Trait Locus Analysis Implicates CD4⁺/CD44high Memory T Cells in the Pathogenesis of Murine Autoimmune Pancreatitis. PLoS One 2015; 10:e0136298. [PMID: 26325540 PMCID: PMC4556487 DOI: 10.1371/journal.pone.0136298] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 08/02/2015] [Indexed: 12/24/2022] Open
Abstract
The mouse strain MRL/MpJ is prone to spontaneously develop autoimmune pancreatitis (AIP). To elucidate the genetic control towards the development of the phenotype and to characterize contributions of immunocompetent cell types, MRL/MpJ mice were interbred with three additional strains (BXD2/TYJ, NZM2410/J, CAST/EIJ) for four generations in an advanced intercross line. Cellular phenotypes were determined by flow cytometric quantification of splenic leukocytes and complemented by the histopathological evaluation of pancreatic lesions. An Illumina SNP array was used for genotyping. QTL analyses were performed with the R implementation of HAPPY. Out of 41 leukocyte subpopulations (B cells, T cells and dendritic cells), only three were significantly associated with AIP: While CD4+/CD44high memory T cells and CD4+/CD69+ T helper (Th) cells correlated positively with the disease, the cytotoxic T cell phenotype CD8+/CD44low showed a negative correlation. A QTL for AIP on chromosome 2 overlapped with QTLs for CD4+/CD44high and CD8+/CD44high memory T cells, FoxP3+/CD4+ and FoxP3+/CD8+ regulatory T cells (Tregs), and CD8+/CD69+ cytotoxic T cells. On chromosome 6, overlapping QTLs for AIP and CD4+/IL17+ Th17 cells and again FoxP3+/CD8+ Tregs were observed. In conclusion, CD4+/CD44high memory T cells are the only leukocyte subtype that could be linked to AIP both by correlation studies and from observed overlapping QTL. The potential role of this cell type in the pathogenesis of AIP warrants further investigations.
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Affiliation(s)
- Julia Bischof
- Department of Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - Sarah Müller
- Department of Medicine II, Division of Gastroenterology, Rostock University Medical Center, E.-Heydemann-Str. 6, 18057 Rostock, Germany
| | - Luise Borufka
- Department of Medicine II, Division of Gastroenterology, Rostock University Medical Center, E.-Heydemann-Str. 6, 18057 Rostock, Germany
| | - Farahnaz Asghari
- Department of Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
- Department of Medicine II, Division of Gastroenterology, Rostock University Medical Center, E.-Heydemann-Str. 6, 18057 Rostock, Germany
| | - Steffen Möller
- Department of Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - Stephanie-Anna Holzhüter
- Institute of Pathology, Rostock University Medical Center, Strempelstr. 14, 18057 Rostock, Germany
| | - Horst Nizze
- Institute of Pathology, Rostock University Medical Center, Strempelstr. 14, 18057 Rostock, Germany
| | - Saleh M. Ibrahim
- Department of Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - Robert Jaster
- Department of Medicine II, Division of Gastroenterology, Rostock University Medical Center, E.-Heydemann-Str. 6, 18057 Rostock, Germany
- * E-mail:
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Sadeghi H, Gupta Y, Möller S, Samavedam UK, Behnen M, Kasprick A, Bieber K, Müller S, Kalies K, de Castro Marques A, Recke A, Schmidt E, Zillikens D, Laskay T, Mariani J, Ibrahim SM, Ludwig RJ. The retinoid-related orphan receptor alpha is essential for the end-stage effector phase of experimental epidermolysis bullosa acquisita. J Pathol 2015; 237:111-22. [DOI: 10.1002/path.4556] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 04/13/2015] [Accepted: 04/23/2015] [Indexed: 12/25/2022]
Affiliation(s)
| | - Yask Gupta
- Department of Dermatology; University of Lübeck; Germany
| | - Steffen Möller
- Department of Dermatology; University of Lübeck; Germany
| | | | - Martina Behnen
- Institute for Medical Microbiology and Hygiene; University of Lübeck; Germany
| | - Anika Kasprick
- Department of Dermatology; University of Lübeck; Germany
| | - Katja Bieber
- Department of Dermatology; University of Lübeck; Germany
| | - Susen Müller
- Department of Dermatology; University of Lübeck; Germany
| | | | | | - Andreas Recke
- Department of Dermatology; University of Lübeck; Germany
| | - Enno Schmidt
- Department of Dermatology; University of Lübeck; Germany
| | | | - Tamás Laskay
- Institute for Medical Microbiology and Hygiene; University of Lübeck; Germany
| | - Jean Mariani
- Sorbonne Universités; UPMC Univ Paris 06, UMR 8256 B2A Biological Adaptation and Ageing Paris France
- CNRS; UMR 8256 B2A Biological Adaptation and Ageing Paris France
| | | | - Ralf J Ludwig
- Department of Dermatology; University of Lübeck; Germany
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40
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Hirose M, Schilf P, Benoit S, Eming R, Gläser R, Homey B, Kunz M, Nebel A, Peitsch WK, Pföhler C, Sárdy M, Schreiber S, Zillikens D, Schmidt E, Ibrahim SM. Polymorphisms in the mitochondrially encoded ATP synthase 8 gene are associated with susceptibility to bullous pemphigoid in the German population. Exp Dermatol 2015; 24:715-7. [PMID: 25941154 DOI: 10.1111/exd.12732] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/12/2015] [Indexed: 02/02/2023]
Affiliation(s)
- Misa Hirose
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Paul Schilf
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Sandrine Benoit
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
| | - Rüdiger Eming
- Department of Dermatology, Venereology and Allergology, Phillip University of Marburg, Marburg, Germany
| | - Regine Gläser
- Department of Dermatology, Venereology and Allergology, Christian Albrecht University of Kiel, Kiel, Germany
| | - Bernhard Homey
- Department of Dermatology, Venereology and Allergology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Manfred Kunz
- Department of Dermatology, Venereology and Allergology, University of Leipzig, Leipzig, Germany
| | - Almut Nebel
- Institute of Clinical Molecular Biology, Kiel University, Kiel, Germany
| | - Wiebke K Peitsch
- Department of Dermatology, University Medical Center Mannheim, Heidelberg University, Mannheim, Germany
| | - Claudia Pföhler
- Department of Dermatology, Saarland University Medical School, Homburg/Saar, Germany
| | - Miklós Sárdy
- Department of Dermatology and Allergology, Ludwig Maximilian University, Munich, Germany
| | - Stefan Schreiber
- Institute of Clinical Molecular Biology, Kiel University, Kiel, Germany.,Department of Internal Medicine I, Christian Albrecht University of Kiel, Kiel, Germany.,Popgen biobank, Kiel University, Kiel, Germany
| | - Detlef Zillikens
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Enno Schmidt
- Department of Dermatology, University of Lübeck, Lübeck, Germany.,Comprehensive Center for Inflammation Medicine, University of Lübeck, Lübeck, Germany
| | - Saleh M Ibrahim
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
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41
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Prüßmann W, Prüßmann J, Koga H, Recke A, Iwata H, Juhl D, Görg S, Henschler R, Hashimoto T, Schmidt E, Zillikens D, Ibrahim SM, Ludwig RJ. Prevalence of pemphigus and pemphigoid autoantibodies in the general population. Orphanet J Rare Dis 2015; 10:63. [PMID: 25971981 PMCID: PMC4436865 DOI: 10.1186/s13023-015-0278-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 04/29/2015] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Mucocutaneous blistering is characteristic of autoimmune bullous dermatoses (AIBD). Blisters are caused by autoantibodies directed against structural components of the skin. Hence, detection of specific autoantibodies has become a hallmark for AIBD diagnosis. Studies on prevalence of AIBD autoantibodies in healthy individuals yielded contradictory results. METHODS To clarify this, samples from 7063 blood donors were tested for presence of anti-BP180-NC16A, anti-BP230 and anti-Dsg1/3 IgG by indirect immunofluorescence (IF) microscopy using a biochip. RESULTS Cumulative prevalence of these autoantibodies was 0.9 % (CI: 0.7-1.1 %), with anti-BP180-NC16A IgG being most prevalent. Validation of IF findings using ELISA confirmed presence of autoantibodies in 7/15 (anti-Dsg1), 6/7 (anti-Dsg3), 35/37 (anti-BP180-NC16A) and 2/3 (anti-BP230) cases. Moreover, in 16 samples, anti-BP180-NC16A autoantibody concentrations exceeded the cut-off for the diagnosis of bullous pemphigoid. Interestingly, these anti-BP180-NC16A autoantibodies from healthy individuals formed immune complexes with recombinant antigen and dose-dependently activated neutrophils in vitro. However, fine-epitope mapping within NC16A showed a different binding pattern of anti-BP180-NC16A autoantibodies from healthy individuals compared to bullous pemphigoid patients, while IgG subclasses were identical. CONCLUSIONS Collectively, we here report a low prevalence of AIBD autoantibodies in a large cohort of healthy individuals. Furthermore, functional analysis shows differences between autoantibodies from healthy donors and AIBD patients.
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Affiliation(s)
- Wiebke Prüßmann
- Department of Dermatology, University of Lübeck, Lübeck, Germany.
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany.
| | - Jasper Prüßmann
- Department of Dermatology, University of Lübeck, Lübeck, Germany.
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany.
| | - Hiroshi Koga
- Department of Dermatology, University of Lübeck, Lübeck, Germany.
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany.
| | - Andreas Recke
- Department of Dermatology, University of Lübeck, Lübeck, Germany.
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany.
| | - Hiroaki Iwata
- Department of Dermatology, University of Lübeck, Lübeck, Germany.
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
| | - David Juhl
- Institute of Transfusion Medicine, University Hospital of Schleswig-Holstein, Lübeck and Kiel, Germany.
| | - Siegfried Görg
- Institute of Transfusion Medicine, University Hospital of Schleswig-Holstein, Lübeck and Kiel, Germany.
| | - Reinhard Henschler
- Transfusion Medicine, Cellular Therapeutics and Hemostaseology, Clinics of the Ludwigs-Maximilians-University Munich, Munich, Germany.
| | - Takashi Hashimoto
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, Japan.
| | - Enno Schmidt
- Department of Dermatology, University of Lübeck, Lübeck, Germany.
| | - Detlef Zillikens
- Department of Dermatology, University of Lübeck, Lübeck, Germany.
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany.
| | - Saleh M Ibrahim
- Department of Dermatology, University of Lübeck, Lübeck, Germany.
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany.
| | - Ralf J Ludwig
- Department of Dermatology, University of Lübeck, Lübeck, Germany.
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany.
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42
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Kunz M, König IR, Schillert A, Kruppa J, Ziegler A, Grallert H, Müller-Nurasyid M, Lieb W, Franke A, Ranki A, Panelius J, Koskenmies S, Hasan T, Kere J, Rönn AC, Simon JC, Schmidt E, Wenzel J, Tüting T, Landsberg J, Zeller T, Blankenberg S, Gläser R, Patsinakidis N, Kuhn A, Ibrahim SM. Genome-wide association study identifies new susceptibility loci for cutaneous lupus erythematosus. Exp Dermatol 2015; 24:510-5. [PMID: 25827949 DOI: 10.1111/exd.12708] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2015] [Indexed: 12/11/2022]
Abstract
Cutaneous lupus erythematosus (CLE) is a chronic autoimmune disease of the skin with typical clinical manifestations. Here, we genotyped 906 600 single nucleotide polymorphisms (SNPs) in 183 CLE cases and 1288 controls of Central European ancestry. Replication was performed for 13 SNPs in 219 case subjects and 262 controls from Finland. Association was particularly pronounced at 4 loci, all with genomewide significance (P < 5 × 10(-8) ): rs2187668 (PGWAS = 1.4 × 10(-12) ), rs9267531 (PGWAS = 4.7 × 10(-10) ), rs4410767 (PGWAS = 1.0 × 10(-9) ) and rs3094084 (PGWAS = 1.1 × 10(-9) ). All mentioned SNPs are located within the major histocompatibility complex (MHC) region of chromosome 6 and near genes of known immune functions or associations with other autoimmune diseases such as HLA-DQ alpha chain 1 (HLA-DQA1), MICA, MICB, MSH5, TRIM39 and RPP21. For example, TRIM39/RPP21 read through transcript is a known mediator of the interferon response, a central pathway involved in the pathogenesis of CLE and systemic lupus erythematosus (SLE). Taken together, this genomewide analysis of disease association of CLE identified candidate genes and genomic regions that may contribute to pathogenic mechanisms in CLE via dysregulated antigen presentation (HLA-DQA1), apoptosis regulation, RNA processing and interferon response (MICA, MICB, MSH5, TRIM39 and RPP21).
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Affiliation(s)
- Manfred Kunz
- Department of Dermatology, Venereology and Allergology, University of Leipzig, Leipzig, Germany
| | - Inke R König
- Institut für Medizinische Biometrie und Statistik, und Zentrum für Klinische Studien, Universität zu Lübeck, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
| | - Arne Schillert
- Institut für Medizinische Biometrie und Statistik, und Zentrum für Klinische Studien, Universität zu Lübeck, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
| | - Jochen Kruppa
- Institut für Medizinische Biometrie und Statistik, und Zentrum für Klinische Studien, Universität zu Lübeck, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
| | - Andreas Ziegler
- Institut für Medizinische Biometrie und Statistik, und Zentrum für Klinische Studien, Universität zu Lübeck, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
| | - Harald Grallert
- Research unit of Molecular Epidemiology, Institute of Epidemiology II, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.,German Center for Diabetes Research, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Martina Müller-Nurasyid
- Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.,Department of Medicine I, Ludwig Maximilian University Munich, Munich, Germany.,German Center for Cardiovascular Research, Munich Heart Alliance, Munich, Germany
| | - Wolfgang Lieb
- Institute for Epidemiology and Biobank popgen, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Annamari Ranki
- Department of Dermatology and Allergology, Skin and Allergy Hospital, Helsinki University Central Hospital, Helsinki, Finland
| | - Jaana Panelius
- Department of Dermatology and Allergology, Skin and Allergy Hospital, Helsinki University Central Hospital, Helsinki, Finland
| | - Sari Koskenmies
- Department of Dermatology and Allergology, Skin and Allergy Hospital, Helsinki University Central Hospital, Helsinki, Finland
| | - Taina Hasan
- Department of Dermatology, Tampere University Central Hospital, University of Tampere, Tampere, Finland
| | - Juha Kere
- Department of Biosciences and Nutrition, Karolinska Institute, Huddinge, Sweden.,Department of Medical Genetics, Folkhälsan Institute of Genetics, University of Helsinki, Helsinki, Finland
| | - Ann-Charlotte Rönn
- Clinical Research Center, Karolinska University Hospital, Huddinge, Sweden
| | - Jan C Simon
- Department of Dermatology, Venereology and Allergology, University of Leipzig, Leipzig, Germany
| | - Enno Schmidt
- Department of Dermatology, Allergology and Venereology, University of Schleswig-Holstein, Lübeck, Germany
| | - Joerg Wenzel
- Department of Dermatology and Allergy, University of Bonn, Bonn, Germany
| | - Thomas Tüting
- Department of Dermatology and Allergy, University of Bonn, Bonn, Germany
| | - Jennifer Landsberg
- Department of Dermatology and Allergy, University of Bonn, Bonn, Germany
| | - Tanja Zeller
- University Heart Center Hamburg, Clinic for General and Interventional Cardiology, German Center for Cardiovascular Research (DZHK), Hamburg, Germany
| | - Stefan Blankenberg
- University Heart Center Hamburg, Clinic for General and Interventional Cardiology, German Center for Cardiovascular Research (DZHK), Hamburg, Germany
| | - Regine Gläser
- Department of Dermatology and Allergology, University of Schleswig-Holstein, Kiel, Germany
| | - Nikolaos Patsinakidis
- Department of Dermatology, Venereology and Allergology, Ruhr-University of Bochum, Bochum, Germany
| | - Annegret Kuhn
- Division of Immunogenetics, German Cancer Research Center, Heidelberg, Germany
| | - Saleh M Ibrahim
- Department of Dermatology, Allergology and Venereology, University of Schleswig-Holstein, Lübeck, Germany
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43
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Wang J, Kalyan S, Steck N, Turner LM, Harr B, Künzel S, Vallier M, Häsler R, Franke A, Oberg HH, Ibrahim SM, Grassl GA, Kabelitz D, Baines JF. Analysis of intestinal microbiota in hybrid house mice reveals evolutionary divergence in a vertebrate hologenome. Nat Commun 2015; 6:6440. [PMID: 25737238 PMCID: PMC4366507 DOI: 10.1038/ncomms7440] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 01/29/2015] [Indexed: 02/06/2023] Open
Abstract
Recent evidence suggests that natural selection operating on hosts to maintain their microbiome contributes to the emergence of new species, that is, the ‘hologenomic basis of speciation’. Here we analyse the gut microbiota of two house mice subspecies, Mus musculus musculus and M. m. domesticus, across their Central European hybrid zone, in addition to hybrids generated in the lab. Hybrid mice display widespread transgressive phenotypes (that is, exceed or fall short of parental values) in a variety of measures of bacterial community structure, which reveals the importance of stabilizing selection operating on the intestinal microbiome within species. Further genetic and immunological analyses reveal genetic incompatibilities, aberrant immune gene expression and increased intestinal pathology associated with altered community structure among hybrids. These results provide unique insight into the consequences of evolutionary divergence in a vertebrate ‘hologenome’, which may be an unrecognized contributing factor to reproductive isolation in this taxonomic group. Animal hosts and their associated microbes are largely the outcome of coevolution. Here, the authors show differences in the intestinal microbiome of hybrids compared with pure species of house mice, which suggests that host–microbiome interactions contribute to the evolution of host species.
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Affiliation(s)
- Jun Wang
- 1] Max Planck Institute for Evolutionary Biology, August-Thienemann-Strasse 2, D-24306 Plön, Germany [2] Institute for Experimental Medicine, Christian-Albrechts-University of Kiel, Arnold-Heller-Strasse 3, D-24105 Kiel, Germany
| | - Shirin Kalyan
- Institute of Immunology, Christian-Albrechts University Kiel, Arnold-Heller-Strasse 3, Haus 17, 24105 Kiel, Germany
| | - Natalie Steck
- Institute for Experimental Medicine, Christian-Albrechts-University of Kiel, Arnold-Heller-Strasse 3, D-24105 Kiel, Germany
| | - Leslie M Turner
- Max Planck Institute for Evolutionary Biology, August-Thienemann-Strasse 2, D-24306 Plön, Germany
| | - Bettina Harr
- Max Planck Institute for Evolutionary Biology, August-Thienemann-Strasse 2, D-24306 Plön, Germany
| | - Sven Künzel
- Max Planck Institute for Evolutionary Biology, August-Thienemann-Strasse 2, D-24306 Plön, Germany
| | - Marie Vallier
- 1] Max Planck Institute for Evolutionary Biology, August-Thienemann-Strasse 2, D-24306 Plön, Germany [2] Institute for Experimental Medicine, Christian-Albrechts-University of Kiel, Arnold-Heller-Strasse 3, D-24105 Kiel, Germany
| | - Robert Häsler
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Schittenhelmstrasse 12, D-24105 Kiel, Germany
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Schittenhelmstrasse 12, D-24105 Kiel, Germany
| | - Hans-Heinrich Oberg
- Institute of Immunology, Christian-Albrechts University Kiel, Arnold-Heller-Strasse 3, Haus 17, 24105 Kiel, Germany
| | - Saleh M Ibrahim
- Department of Dermatology, University of Lübeck, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - Guntram A Grassl
- Institute for Experimental Medicine, Christian-Albrechts-University of Kiel, Arnold-Heller-Strasse 3, D-24105 Kiel, Germany
| | - Dieter Kabelitz
- Institute of Immunology, Christian-Albrechts University Kiel, Arnold-Heller-Strasse 3, Haus 17, 24105 Kiel, Germany
| | - John F Baines
- 1] Max Planck Institute for Evolutionary Biology, August-Thienemann-Strasse 2, D-24306 Plön, Germany [2] Institute for Experimental Medicine, Christian-Albrechts-University of Kiel, Arnold-Heller-Strasse 3, D-24105 Kiel, Germany
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44
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Gupta Y, Witte M, Möller S, Ludwig RJ, Restle T, Zillikens D, Ibrahim SM. ptRNApred: computational identification and classification of post-transcriptional RNA. Nucleic Acids Res 2014; 42:e167. [PMID: 25303994 PMCID: PMC4267668 DOI: 10.1093/nar/gku918] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
UNLABELLED Non-coding RNAs (ncRNAs) are known to play important functional roles in the cell. However, their identification and recognition in genomic sequences remains challenging. In silico methods, such as classification tools, offer a fast and reliable way for such screening and multiple classifiers have already been developed to predict well-defined subfamilies of RNA. So far, however, out of all the ncRNAs, only tRNA, miRNA and snoRNA can be predicted with a satisfying sensitivity and specificity. We here present ptRNApred, a tool to detect and classify subclasses of non-coding RNA that are involved in the regulation of post-transcriptional modifications or DNA replication, which we here call post-transcriptional RNA (ptRNA). It (i) detects RNA sequences coding for post-transcriptional RNA from the genomic sequence with an overall sensitivity of 91% and a specificity of 94% and (ii) predicts ptRNA-subclasses that exist in eukaryotes: snRNA, snoRNA, RNase P, RNase MRP, Y RNA or telomerase RNA. AVAILABILITY The ptRNApred software is open for public use on http://www.ptrnapred.org/.
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Affiliation(s)
- Yask Gupta
- Department of Dermatology, University of Lübeck, 23538 Lübeck, Germany
| | - Mareike Witte
- Department of Dermatology, University of Lübeck, 23538 Lübeck, Germany
| | - Steffen Möller
- Department of Dermatology, University of Lübeck, 23538 Lübeck, Germany
| | - Ralf J Ludwig
- Department of Dermatology, University of Lübeck, 23538 Lübeck, Germany
| | - Tobias Restle
- Institute for Molecular Medicine, University of Lübeck, 23538 Lübeck, Germany
| | - Detlef Zillikens
- Department of Dermatology, University of Lübeck, 23538 Lübeck, Germany
| | - Saleh M Ibrahim
- Department of Dermatology, University of Lübeck, 23538 Lübeck, Germany
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45
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Lemcke S, Müller S, Möller S, Schillert A, Ziegler A, Cepok-Kauffeld S, Comabella M, Montalban X, Rülicke T, Nandakumar KS, Hemmer B, Holmdahl R, Pahnke J, Ibrahim SM. Nerve conduction velocity is regulated by the inositol polyphosphate-4-phosphatase II gene. Am J Pathol 2014; 184:2420-9. [PMID: 25129256 DOI: 10.1016/j.ajpath.2014.05.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 05/15/2014] [Accepted: 05/21/2014] [Indexed: 10/24/2022]
Abstract
Impairment of nerve conduction is common in neurodegenerative and neuroinflammatory diseases such as multiple sclerosis (MS), and measurement of evoked potentials (visual, motor, or sensory) has been widely used for diagnosis and recently also as a prognostic marker for MS. We used a classical genetic approach to identify novel genes controlling nerve conduction. First, we used quantitative trait mapping in F2 progeny of B10/SJL mice to identify EAE31, a locus controlling latency of motor evoked potentials (MEPs) and clinical onset of experimental autoimmune encephalomyelitis. Then, by combining congenic mapping, in silico haplotype analyses, and comparative genomics we identified inositol polyphosphate-4-phosphatase, type II (Inpp4b) as the quantitative trait gene for EAE31. Sequence variants of Inpp4b (C/A, exon 13; A/C, exon 14) were identified as differing among multiple mouse strains and correlated with individual cortical MEP latency differences. To evaluate the functional relevance of the amino acid exchanges at positions S474R and H548P, we generated transgenic mice carrying the longer-latency allele (Inpp4b(474R/548P)) in the C57BL/6J background. Inpp4b(474R/548P) mice exhibited significantly longer cortical MEP latencies (4.5 ± 0.22 ms versus 3.7 ± 0.13 ms; P = 1.04 × 10(-9)), indicating that INPP4B regulates nerve conduction velocity. An association of an INPP4B polymorphism (rs13102150) with MS was observed in German and Spanish MS cohorts (3676 controls and 911 cases) (P = 8.8 × 10(-3)).
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Affiliation(s)
- Susanne Lemcke
- Department of Dermatology, Venereology and Allergology, University of Lübeck, Lübeck, Germany.
| | - Susen Müller
- Department of Dermatology, Venereology and Allergology, University of Lübeck, Lübeck, Germany; Neurodegeneration Research Lab, Department of Neurology, University of Magdeburg, Magdeburg, Germany
| | - Steffen Möller
- Department of Dermatology, Venereology and Allergology, University of Lübeck, Lübeck, Germany
| | - Arne Schillert
- Institute of Medical Biometry and Statistics, University of Lübeck, University Hospital Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Andreas Ziegler
- Institute of Medical Biometry and Statistics, University of Lübeck, University Hospital Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Sabine Cepok-Kauffeld
- Department of Neurology, University Hospital, Technical University of Munich, Munich, Germany
| | - Manuel Comabella
- Department of Neurology-Neuroimmunology, Multiple Sclerosis Center of Catalonia, University Hospital Vall d'Hebron, Barcelona, Spain
| | - Xavier Montalban
- Department of Neurology-Neuroimmunology, Multiple Sclerosis Center of Catalonia, University Hospital Vall d'Hebron, Barcelona, Spain
| | - Thomas Rülicke
- Institute of Laboratory Animal Science, University of Veterinary Medicine, Vienna, Austria
| | | | - Bernhard Hemmer
- Department of Neurology, University Hospital, Technical University of Munich, Munich, Germany
| | - Rikard Holmdahl
- Medical Inflammation Research Division, Karolinska Institute, Stockholm, Sweden
| | - Jens Pahnke
- Neurodegeneration Research Lab, Department of Neurology, University of Magdeburg, Magdeburg, Germany; German Center for Neurodegenerative Diseases Magdeburg, Magdeburg, Germany; Department of Behavioral Neurology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Saleh M Ibrahim
- Department of Dermatology, Venereology and Allergology, University of Lübeck, Lübeck, Germany
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Bär F, Föh B, Pagel R, Schröder T, Schlichting H, Hirose M, Lemcke S, Klinger A, König P, Karsten CM, Büning J, Lehnert H, Fellermann K, Ibrahim SM, Sina C. Carboxypeptidase E modulates intestinal immune homeostasis and protects against experimental colitis in mice. PLoS One 2014; 9:e102347. [PMID: 25051500 PMCID: PMC4106776 DOI: 10.1371/journal.pone.0102347] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Accepted: 06/18/2014] [Indexed: 12/24/2022] Open
Abstract
Enteroendocrine cells (EEC) produce neuropeptides, which are crucially involved in the maintenance of the intestinal barrier. Hence, EEC dysfunction is suggested to be involved in the complex pathophysiology of inflammatory bowel disease (IBD), which is characterized by decreased intestinal barrier function. However, the underlying mechanisms for EEC dysfunction are not clear and suitable models for a better understanding are lacking. Here, we demonstrate that Carboxypeptidase E (CPE) is specifically expressed in EEC of the murine colon and ileum and that its deficiency is associated with reduced intestinal levels of Neuropeptide Y (NPY) and Peptide YY (PYY), which are both produced by EEC. Moreover, cpe−/− mice exhibit an aggravated course of DSS-induced chronic colitis compared to wildtype littermates. In addition, we observed elevated mucosal IL-6 and KC transcript levels already at baseline conditions in cpe−/− mice. Moreover, supernatants obtained from isolated intestinal crypts of cpe−/− mice lead to increased IL-6 and KC expression in MODE-K cells in the presence of LPS. This effect was reversible by co-administration of recombinant NPY, suggesting a CPE mediated immunosuppressive effect in the intestines by influencing the processing of specific neuropeptides. In this context, the chemotaxis of bone marrow derived macrophages towards respective supernatants was enhanced. In conclusion, our data point to an anti-inflammatory role of CPE in the intestine by influencing local cytokine levels and thus regulating the migration of myeloid immune cells into the mucosa. These findings highlight the importance of EEC for intestinal homeostasis and propose EEC as potential therapeutic targets in IBD.
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Affiliation(s)
- Florian Bär
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
- Institute of Anatomy, University of Lübeck, Lübeck, Germany
| | - Bandik Föh
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - René Pagel
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Torsten Schröder
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Heidi Schlichting
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Misa Hirose
- Department of Dermatology, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Susanne Lemcke
- Department of Dermatology, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Antje Klinger
- Institute of Anatomy, University of Lübeck, Lübeck, Germany
| | - Peter König
- Institute of Anatomy, University of Lübeck, Lübeck, Germany
| | - Christian M. Karsten
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Jürgen Büning
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Hendrik Lehnert
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Klaus Fellermann
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Saleh M. Ibrahim
- Department of Dermatology, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Christian Sina
- Medical Department I, University Hospital Schleswig-Holstein, Lübeck, Germany
- * E-mail:
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Prüßmann J, Prüßmann W, Recke A, Rentzsch K, Juhl D, Henschler R, Müller S, Lamprecht P, Schmidt E, Csernok E, Görg S, Stöcker W, Zillikens D, Ibrahim SM, Ludwig RJ. Co-occurrence of autoantibodies in healthy blood donors. Exp Dermatol 2014; 23:519-21. [DOI: 10.1111/exd.12445] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/09/2014] [Indexed: 11/26/2022]
Affiliation(s)
- Jasper Prüßmann
- Department of Dermatology; University of Lübeck; Lübeck Germany
| | - Wiebke Prüßmann
- Department of Dermatology; University of Lübeck; Lübeck Germany
| | - Andreas Recke
- Department of Dermatology; University of Lübeck; Lübeck Germany
| | | | - David Juhl
- Institute of Transfusion Medicine; University Hospital of Schleswig-Holstein; Lübeck and Kiel Germany
| | - Reinhard Henschler
- Institute of Transfusion Medicine and Immune Hematology; German Red Cross Blood Donor Service Baden-Württemberg - Hessen; Clinics of the Goethe University; Frankfurt Germany
- Transfusion Medicine, Cellular Therapeutics and Hemostaseology; Clinics of the Ludwigs-Maximilians-University Munich; München Germany
| | - Susen Müller
- Department of Dermatology; University of Lübeck; Lübeck Germany
| | - Peter Lamprecht
- Department of Rheumatology and Vasculitis Center; Clinical Center Bad Bramstedt; University of Lübeck; Lübeck Germany
| | - Enno Schmidt
- Department of Dermatology; University of Lübeck; Lübeck Germany
| | - Elena Csernok
- Department of Rheumatology and Vasculitis Center; Clinical Center Bad Bramstedt; University of Lübeck; Lübeck Germany
| | - Siegfried Görg
- Institute of Transfusion Medicine; University Hospital of Schleswig-Holstein; Lübeck and Kiel Germany
| | | | | | | | - Ralf J. Ludwig
- Department of Dermatology; University of Lübeck; Lübeck Germany
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Müller S, Krüger B, Lange F, Bock CN, Nizze H, Glass Ä, Ibrahim SM, Jaster R. The mtDNA nt7778 G/T polymorphism augments formation of lymphocytic foci but does not aggravate cerulein-induced acute pancreatitis in mice. PLoS One 2014; 9:e102266. [PMID: 25010670 PMCID: PMC4092110 DOI: 10.1371/journal.pone.0102266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 06/16/2014] [Indexed: 12/20/2022] Open
Abstract
A polymorphism in the ATP synthase 8 (ATP8) gene of the murine mitochondrial genome, G-to-T transversion at position 7778, has been suggested to increase susceptibility to multiple autoimmune diseases, including autoimmune pancreatitis (AIP). The polymorphism also induces mitochondrial reactive oxygen species generation, secretory dysfunction and β-cell mass adaptation. Here, we have used two conplastic mouse strains, C57BL/6N-mtAKR/J (B6-mtAKR; nt7778 G; control) and C57BL/6N-mtFVB/N (B6-mtFVB; nt7778 T), to address the question if the polymorphism also affects the course of cerulein-induced acute pancreatitis in mice. Therefore, two age groups of mice (3 and 12-month-old, respectively) were subjected to up to 7 injections of the secretagogue cerulein (50 µg/kg body weight) at hourly intervals. Disease severity was assessed at time points from 3 hours to 7 days based on pancreatic histopathology, serum levels of α-amylase and activities of myeloperoxidase (MPO) in lung tissue. A comparison of cerulein-induced pancreatic tissue damage and increases of α-amylase and MPO activities showed no differences between the age-matched groups of both strains. Interestingly, histological evaluation of pancreatic tissue of both untreated and cerulein-treated B6-mtAKR and B6-mtFVB mice also revealed the presence of infiltrates of immune cells surrounding ducts and vessels; a finding that is compatible with an early stage of AIP. After recovery from cerulein-induced pancreatitis (day 7 after the injections), 12-month-old B6-mtFVB mice but not B6-mtAKR mice displayed aggravated lymphocytic lesions. A comparison of 12-month-old mice with other age groups of both strains revealed that lymphocytic foci were largely absent in 3-month-old mice, while 24-month-old mice were more affected. Together, our data suggest that the mtDNA nt7778 G/T polymorphism does not aggravate cerulein-induced acute pancreatitis. Autoimmune-like lesions, however, may progress faster if additional tissue damage occurs.
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Affiliation(s)
- Sarah Müller
- Department of Medicine II, Division of Gastroenterology, University Medicine Rostock, Rostock, Germany
| | - Burkhard Krüger
- Division of Medical Biology, University Medicine Rostock, Rostock, Germany
| | - Falko Lange
- Department of Medicine II, Division of Gastroenterology, University Medicine Rostock, Rostock, Germany
- Oscar-Langendorff-Institute of Physiology, University Medicine Rostock, Rostock, Germany
| | - Cristin N. Bock
- Department of Medicine II, Division of Gastroenterology, University Medicine Rostock, Rostock, Germany
| | - Horst Nizze
- Institute of Pathology, University Medicine Rostock, Rostock, Germany
| | - Änne Glass
- Institute for Biostatistics and Informatics in Medicine and Ageing Research, University Medicine Rostock, Rostock, Germany
| | - Saleh M. Ibrahim
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Robert Jaster
- Department of Medicine II, Division of Gastroenterology, University Medicine Rostock, Rostock, Germany
- * E-mail:
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Ibrahim SM, Bukar M, Galadima GB, Audu BM, Ibrahim HA. Prevalence of bacterial vaginosis in pregnant women in Maiduguri, North-Eastern Nigeria. Niger J Clin Pract 2014; 17:154-8. [PMID: 24553023 DOI: 10.4103/1119-3077.127424] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE This study determined the prevalence and socio-demographic characteristics of bacterial vaginosis (BV) among pregnant women with abnormal vaginal discharge. STUDY DESIGN Descriptive cross-sectional study. SETTING University of Maiduguri Teaching Hospital. MATERIALS AND METHODS Vaginal swab samples and data on epidemiological risk factors were collected from 400 consecutive pregnant women with complaints of abnormal vaginal discharge. The data was analyzed using the SPSS 16.0 statistical software. Association between variables was compared by using the Chi-square (χ2 ) and Fisher's exact tests while P < 0.05 was considered significant at 95.0% confidence level. RESULT The prevalence of BV among pregnant women with abnormal vaginal discharge was 17.3%. Age 20-24 years, multigravidity, lack of western education and unemployment were associated with increased prevalence of BV. Yellowish, watery vaginal discharge (P = 0.001) was associated with BV. Dysuria, dyspareunia and lower abdominal tenderness were associated with BV (P = 0.001). Fifty three (77%) of patients had BV during the second trimester compared to 6 (9%) who had it in the 1 st trimester of pregnancy (P = 0.012). CONCLUSION The high prevalence of BV in this study may necessitate adequate screening of pregnant women with abnormal vaginal discharge in order to give appropriate treatment and avoid complications associated with it.
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Affiliation(s)
- S M Ibrahim
- Department of Obstetrics and Gynaecology, University of Maiduguri Teaching Hospital, Maiduguri, Nigeria
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50
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Bukar M, Audu BM, Kawuwa MB, Ibrahim SM, Ali F. Determinants of premarital sex in Maiduguri, Nigeria: Implications for Human Papilloma Virus vaccination. ACTA ACUST UNITED AC 2013. [DOI: 10.14194/ijmbr.236] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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