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Abdeltawab MS, Abdel-Shafi IR, Aboulhoda BE, Mahfoz AM, Hamed AM. The neuroprotective potential of curcumin on T. Spiralis infected mice. BMC Complement Med Ther 2024; 24:99. [PMID: 38388410 PMCID: PMC10882799 DOI: 10.1186/s12906-024-04399-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 02/13/2024] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND Trichinella spiralis can affect the brain by inducing inflammatory and vascular changes. Drug management with the antiparasitic drug albendazole can be enhanced by natural compounds such as curcumin. The potential benefit of curcumin as an adjuvant to albendazole in the management of cerebral affection during experimental T. spiralis infection was evaluated. Animals received either curcumin 150 mg/Kg, albendazole 50 mg/Kg or a combination of both drugs. Animal groups receiving treatment were compared with infected and non-infected control groups. Blood levels of reduced glutathione (GSH) and dopamine were measured, and brain tissue expression of cyclooxygenase-2 enzyme (COX-2) and CD34 was assessed by immunohistochemistry. RESULTS T. spiralis infection resulted in a state of oxidative stress, which was improved by albendazole and curcumin. Also, both drugs restored the peripheral dopamine level, which was decreased in infected non-treated mice. Curcumin was also found to be efficient in improving brain pathology and reducing local COX-2 and CD 34 expression. CONCLUSIONS Inflammatory and pathological changes during neurotrichinosis can be improved by the addition of curcumin to conventional anti-parasitic drugs.
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Affiliation(s)
- Magda Sa Abdeltawab
- Department of Medical Parasitology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Iman R Abdel-Shafi
- Department of Medical Parasitology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Basma Emad Aboulhoda
- Anatomy and Embryology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Amal M Mahfoz
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Modern University for Technology and Information, Cairo, Egypt.
| | - Alshaimaa Mr Hamed
- Department of Medical Parasitology, Faculty of Medicine, Cairo University, Cairo, Egypt
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2
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Rodrigues CR, Moga S, Singh B, Aulakh GK. CD34 Protein: Its expression and function in inflammation. Cell Tissue Res 2023; 393:443-454. [PMID: 37450038 DOI: 10.1007/s00441-023-03811-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 07/06/2023] [Indexed: 07/18/2023]
Abstract
CD34 has spear-headed the field of basic research and clinical transplantation since the first reports of its expression on hematopoietic stem cells (HSCs). Expressed in mice, humans, rats and other species, CD34 has been used for more than 40 years as a hematopoietic stem and progenitor cell marker. It was later found that muscle satellite cells and epidermal precursors can also be identified with the aid of CD34. Despite the usefulness of CD34 as a marker of HSCs, its overall purpose in animal physiology has remained unclear. This review recaptures CD34 structure, evolutionary conservation, proposed functions, and role in lung inflammation, to describe current research findings and to provide guidance for future studies on CD34.
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Affiliation(s)
- Carolina Rego Rodrigues
- Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, S7N5B4, Canada
| | - Sahib Moga
- Faculty of Science, The University of Ottawa, 75 Laurier Ave. E, Ottawa, ON, K1N 6N5, Canada
| | - Baljit Singh
- Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, S7N5B4, Canada
| | - Gurpreet Kaur Aulakh
- Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, S7N5B4, Canada.
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3
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Li Z, Dong S, Huang S, Sun Y, Sun Y, Zhao B, Qi Q, Xiong L, Hong F, Jiang Y. Role of CD34 in inflammatory bowel disease. Front Physiol 2023; 14:1144980. [PMID: 37051017 PMCID: PMC10083274 DOI: 10.3389/fphys.2023.1144980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 03/15/2023] [Indexed: 03/29/2023] Open
Abstract
Inflammatory bowel disease (IBD) is caused by a variety of pathogenic factors, including chronic recurrent inflammation of the ileum, rectum, and colon. Immune cells and adhesion molecules play an important role in the course of the disease, which is actually an autoimmune disease. During IBD, CD34 is involved in mediating the migration of a variety of immune cells (neutrophils, eosinophils, and mast cells) to the inflammatory site, and its interaction with various adhesion molecules is involved in the occurrence and development of IBD. Although the function of CD34 as a partial cell marker is well known, little is known on its role in IBD. Therefore, this article describes the structure and biological function of CD34, as well as on its potential mechanism in the development of IBD.
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Affiliation(s)
- Zhiyuan Li
- Jiaxing Key Laboratory of Virus-Related Infectious Diseases, The Affiliated Hospital of Jiaxing University, Jiaxing University College of Medicine, Jiaxing, Zhejiang, China
- School of Pharmacy, Wannan Medical College, Wuhu, Anhui, China
| | - Shuyan Dong
- Jiaxing Key Laboratory of Virus-Related Infectious Diseases, The Affiliated Hospital of Jiaxing University, Jiaxing University College of Medicine, Jiaxing, Zhejiang, China
| | - Shichen Huang
- School of Pharmacy, Wannan Medical College, Wuhu, Anhui, China
| | - Yuhan Sun
- School of Pharmacy, Wannan Medical College, Wuhu, Anhui, China
| | - Yingzhi Sun
- Jiaxing Key Laboratory of Virus-Related Infectious Diseases, The Affiliated Hospital of Jiaxing University, Jiaxing University College of Medicine, Jiaxing, Zhejiang, China
| | - Beibei Zhao
- School of Pharmacy, Wannan Medical College, Wuhu, Anhui, China
| | - Qiulan Qi
- Jiaxing Key Laboratory of Virus-Related Infectious Diseases, The Affiliated Hospital of Jiaxing University, Jiaxing University College of Medicine, Jiaxing, Zhejiang, China
| | - Lei Xiong
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu, Anhui, China
- *Correspondence: Yuxin Jiang, ; Feng Hong, ; Lei Xiong,
| | - Feng Hong
- The Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
- *Correspondence: Yuxin Jiang, ; Feng Hong, ; Lei Xiong,
| | - Yuxin Jiang
- Jiaxing Key Laboratory of Virus-Related Infectious Diseases, The Affiliated Hospital of Jiaxing University, Jiaxing University College of Medicine, Jiaxing, Zhejiang, China
- *Correspondence: Yuxin Jiang, ; Feng Hong, ; Lei Xiong,
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4
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Investigation of the effect of curcumin on oxidative stress, local inflammatory response, COX-2 expression, and microvessel density in Trichinella spiralis induced enteritis, myositis and myocarditis in mice. Helminthologia 2022; 59:18-36. [PMID: 35601760 PMCID: PMC9075878 DOI: 10.2478/helm-2022-0002] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 11/30/2021] [Indexed: 11/21/2022] Open
Abstract
Background Curcumin exerts anti-oxidant and anti-inflammatory properties that have proven to be of value in the management of several parasitic infections. Objective Investigation of the value of curcumin in the management of trichinosis either alone or as an adjuvant to albendazole. Methods Animals received either curcumin 150 mg/kg, curcumin 300 mg/kg, albendazole 50 mg/ kg or combined curcumin 150mg/kg and albendazole 50 mg/kg and were compared with control infected and non-infected mice. Estimation of intestinal and muscular parasitic load and blood malondialdehyde level, in addition to the histopathological examination of small intestine, skeletal muscle tissue and heart was performed. Also, assessment of the local expression of cyclooxygenase-2 enzyme (COX-2) and CD34 in these samples was done by immunohistochemistry. Results Curcumin was found efficient in reducing parasitic load. It also lowered serum MDA level, local COX-2 and CD34 expression. An evident anti-inflammatory effect of curcumin was observed in intestinal, skeletal muscle and cardiac muscle histopathological sections. Conclusion The anti-inflammatory, anti-oxidant and anti-angiogenic effects of curcumin can help to improve trichinellosis-induced pathology. Curcumin can therefore be of value as an adjuvant therapy to conventional antiparasitic agents and can also produce promising results when used alone at higher doses.
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5
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Aulakh GK, Maltare S, Singh B. Lack of CD34 delays bacterial endotoxin-induced lung inflammation. Respir Res 2021; 22:69. [PMID: 33632209 PMCID: PMC7908703 DOI: 10.1186/s12931-021-01667-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 02/18/2021] [Indexed: 01/05/2023] Open
Abstract
Background CD34, a pan-selectin binding protein when glycosylated, has been shown to be involved in leukocyte migration to the site of inflammation. However, only one report is available on the expression and role of CD34 in neutrophil recruitment during acute lung inflammation. Methods We proceeded to study the role of CD34 in lung neutrophil migration using mouse model of endotoxin induced acute lung inflammation and studied over multiple time points, in generic CD34 knock-out (KO) strain. Results While there was no difference in BAL total or differential leukocyte counts, lung MPO content was lower in LPS exposed KO compared to WT group at 3 h time-point (p = 0.0308). The MPO levels in CD34 KO mice begin to rise at 9 h (p = 0.0021), as opposed to an early 3 h rise in WT mice (p = 0.0001), indicating that KO mice display delays in lung neutrophil recruitment kinetics. KO mice do not loose endotoxin induced lung vascular barrier properties as suggested by lower BAL total protein at 3 h (p = 0.0452) and 24 h (p = 0.0113) time-points. Several pro-inflammatory cytokines and chemokines (TNF-α, IL-1β, KC, MIP-1α, IL-6, IL-10 and IL-12 p70 sub-unit; p < 0.05) had higher levels in WT compared to KO group, at 3 h. Lung immunofluorescence in healthy WT mice reveals CD34 expression in the bronchiolar epithelium, in addition to alveolar septa. Conclusion Thus, given CD34′s pan-selectin affinity, and expression in the bronchiolar epithelium as well as alveolar septa, our study points towards a role of CD34 in lung neutrophil recruitment but not alveolar migration, cytokine expression and lung inflammation.
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Affiliation(s)
- Gurpreet K Aulakh
- Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada.
| | - Sushmita Maltare
- Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Baljit Singh
- Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada.
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6
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Dey DK, Chang SN, Kang SC. The inflammation response and risk associated with aflatoxin B1 contamination was minimized by insect peptide CopA3 treatment and act towards the beneficial health outcomes. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115713. [PMID: 33038573 DOI: 10.1016/j.envpol.2020.115713] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/08/2020] [Accepted: 09/21/2020] [Indexed: 06/11/2023]
Abstract
This study focused on the possible chemo-preventive effects of insect peptide CopA3 on normal human colon cells against the inflammation induced by the toxic environmental pollutant aflatoxin B1 (AFB1). In the study, we used CCD 841 CoN normal human colon cells to investigate the cytotoxic effect induced by AFB1 and elucidated the negative impact of AFB1 exposure on the cell cycle progression. Further, we also carried out the in-vivo experiment, where male BALB/c mice were administrated with AFB1 to induce inflammation associated cancer like phenotype and the dietary effect of CopA3 was evaluated on the early stages of AFB1-induced hepatotoxicity and inflammation in colon tissues. At the initiation stage, CopA3 was given along with water, which significantly decreased the inflammation in the liver and colon of AFB1 exposed mice model. Mice that received CopA3 alone showed enhanced activity of several antioxidant enzymes. In the post treatment stage, the CopA3 dosage remarkably increased the Ki-67 protein expression, indicating the enhancement in cell proliferation event and increased the number of apoptotic cells in colonic crypts, suggesting the capability of CopA3 treatment towards the epithelial cell turnover. Thus, CopA3 treatment shows its potential to inhibit the development of the early stages of AFB1-induced colon inflammation and hepatotoxicity in mice by inhibiting the DNA synthesis of the damaged and inflammatory cell and induced apoptosis for the clearance of damaged cells. Collectively, the results of this study suggest that CopA3 treatment may play a protective role against the mycotoxin induced inflammation.
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Affiliation(s)
- Debasish Kumar Dey
- Department of Biotechnology, Daegu University, Jillyang, Naeri-riGyeongsan, Gyeongbuk, 38453, Republic of Korea.
| | - Sukkum Ngullie Chang
- Department of Biotechnology, Daegu University, Jillyang, Naeri-riGyeongsan, Gyeongbuk, 38453, Republic of Korea.
| | - Sun Chul Kang
- Department of Biotechnology, Daegu University, Jillyang, Naeri-riGyeongsan, Gyeongbuk, 38453, Republic of Korea.
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7
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Lo BC, Gold MJ, Scheer S, Hughes MR, Cait J, Debruin E, Chu FSF, Walker DC, Soliman H, Rossi FM, Blanchet MR, Perona-Wright G, Zaph C, McNagny KM. Loss of Vascular CD34 Results in Increased Sensitivity to Lung Injury. Am J Respir Cell Mol Biol 2017; 57:651-661. [PMID: 28683207 DOI: 10.1165/rcmb.2016-0386oc] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Survival during lung injury requires a coordinated program of damage limitation and rapid repair. CD34 is a cell surface sialomucin expressed by epithelial, vascular, and stromal cells that promotes cell adhesion, coordinates inflammatory cell recruitment, and drives angiogenesis. To test whether CD34 also orchestrates pulmonary damage and repair, we induced acute lung injury in wild-type (WT) and Cd34-/- mice by bleomycin administration. We found that Cd34-/- mice displayed severe weight loss and early mortality compared with WT controls. Despite equivalent early airway inflammation to WT mice, CD34-deficient animals developed interstitial edema and endothelial delamination, suggesting impaired endothelial function. Chimeric Cd34-/- mice reconstituted with WT hematopoietic cells exhibited early mortality compared with WT mice reconstituted with Cd34-/- cells, supporting an endothelial defect. CD34-deficient mice were also more sensitive to lung damage caused by influenza infection, showing greater weight loss and more extensive pulmonary remodeling. Together, our data suggest that CD34 plays an essential role in maintaining vascular integrity in the lung in response to chemical- and infection-induced tissue damage.
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Affiliation(s)
- Bernard C Lo
- 1 The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Matthew J Gold
- 1 The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Sebastian Scheer
- 1 The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada.,2 Infection and Immunity Program, Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia
| | - Michael R Hughes
- 1 The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jessica Cait
- 1 The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Erin Debruin
- 1 The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Fanny S F Chu
- 3 Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - David C Walker
- 3 Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Hesham Soliman
- 1 The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Fabio M Rossi
- 1 The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Marie-Renée Blanchet
- 4 Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec, Canada
| | - Georgia Perona-Wright
- 5 Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada; and.,6 Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Colby Zaph
- 1 The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada.,2 Infection and Immunity Program, Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia
| | - Kelly M McNagny
- 1 The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
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8
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Bissonnette N, Jiang X, Matte J, Guay F, Talbot G, Bontempo V, Gong J, Wang Q, Lessard M. Effect of a post-weaning diet supplemented with functional feed additives on ileal transcriptome activity and serum cytokines in piglets challenged with lipopolysaccharide. Vet Immunol Immunopathol 2016; 182:136-149. [DOI: 10.1016/j.vetimm.2016.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 09/26/2016] [Accepted: 10/14/2016] [Indexed: 10/20/2022]
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9
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In situ hematopoiesis: a regulator of TH2 cytokine-mediated immunity and inflammation at mucosal surfaces. Mucosal Immunol 2015; 8:701-11. [PMID: 25783967 DOI: 10.1038/mi.2015.17] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 02/01/2015] [Indexed: 02/04/2023]
Abstract
Hematopoiesis refers to the development of blood cells in the body through the differentiation of pluripotent stem cells. Although hematopoiesis is a multifocal process during embryonic development, under homeostatic conditions it occurs exclusively within the bone marrow. There, a limited number of hematopoietic stem cells differentiate into a rapidly proliferating population of lineage-restricted progenitors that serve to replenish circulating blood cells. However, emerging reports now suggest that under inflammatory conditions, alterations in hematopoiesis that occur outside of the bone marrow appear to constitute a conserved mechanism of innate immunity. Moreover, recent reports have identified previously unappreciated pathways that regulate the egress of hematopoietic progenitor cells from the bone marrow, alter their activation status, and skew their developmental potential. These studies suggest that progenitor cells contribute to inflammatory response by undergoing in situ hematopoiesis (ISH). In this review, we highlight the differences between homeostatic hematopoiesis, which occurs in the bone marrow, and ISH, which occurs at mucosal surfaces. Further, we highlight factors produced at local sites of inflammation that regulate hematopoietic progenitor cell responses and the development of TH2 cytokine-mediated inflammation. Finally, we discuss the therapeutic potential of targeting ISH in preventing the development of inflammation at mucosal sites.
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10
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Ruiz-Perez F, Nataro JP. Bacterial serine proteases secreted by the autotransporter pathway: classification, specificity, and role in virulence. Cell Mol Life Sci 2013; 71:745-70. [PMID: 23689588 DOI: 10.1007/s00018-013-1355-8] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 04/25/2013] [Accepted: 04/29/2013] [Indexed: 01/07/2023]
Abstract
Serine proteases exist in eukaryotic and prokaryotic organisms and have emerged during evolution as the most abundant and functionally diverse group. In Gram-negative bacteria, there is a growing family of high molecular weight serine proteases secreted to the external milieu by a fascinating and widely employed bacterial secretion mechanism, known as the autotransporter pathway. They were initially found in Neisseria, Shigella, and pathogenic Escherichia coli, but have now also been identified in Citrobacter rodentium, Salmonella, and Edwardsiella species. Here, we focus on proteins belonging to the serine protease autotransporter of Enterobacteriaceae (SPATEs) family. Recent findings regarding the predilection of serine proteases to host intracellular or extracellular protein-substrates involved in numerous biological functions, such as those implicated in cytoskeleton stability, autophagy or innate and adaptive immunity, have helped provide a better understanding of SPATEs' contributions in pathogenesis. Here, we discuss their classification, substrate specificity, and potential roles in pathogenesis.
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Affiliation(s)
- Fernando Ruiz-Perez
- Department of Pediatrics, School of Medicine, University of Virginia, P.O.Box 800326, MR4 Room 4012C, 409 Lane Road, Charlottesville, VA, 22908, USA,
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11
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Mullaly SC, Oudhoff MJ, Min PH, Burrows K, Antignano F, Rattray DG, Chenery A, McNagny KM, Ziltener HJ, Zaph C. Requirement for core 2 O-glycans for optimal resistance to helminth infection. PLoS One 2013; 8:e60124. [PMID: 23555902 PMCID: PMC3612062 DOI: 10.1371/journal.pone.0060124] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2013] [Accepted: 02/21/2013] [Indexed: 11/19/2022] Open
Abstract
The migration of lymphocytes to the small intestine is controlled by expression of the integrin α4β7 and the chemokine receptor CCR9. However, the molecules that specifically regulate migration to the large intestine remain unclear. Immunity to infection with the large intestinal helminth parasite Trichuris muris is dependent upon CD4+ T cells that migrate to the large intestine. We examine the role of specific chemokine receptors, adhesion molecules and glycosyltransferases in the development of protective immunity to Trichuris. Mice deficient in expression of the chemokine receptors CCR2 or CCR6 were resistant to infection with Trichuris. Similarly, loss of CD34, CD43, CD44 or PSGL-1 had no effect on resistance to infection. In contrast, simultaneous deletion of the Core2 β1,6-N-acetylglucosaminyltransferase (C2GnT) enzymes C2GnT1 and C2Gnt2 resulted in delayed expulsion of worms. These results suggest that C2GnT-dependent modifications may play a role in migration of protective immune cells to the large intestine.
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MESH Headings
- Animals
- Antigens, CD34/genetics
- Antigens, CD34/metabolism
- CD4-Positive T-Lymphocytes/metabolism
- Hyaluronan Receptors/genetics
- Hyaluronan Receptors/metabolism
- Intestine, Large/metabolism
- Intestine, Large/parasitology
- Leukosialin/genetics
- Leukosialin/metabolism
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/metabolism
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- N-Acetylglucosaminyltransferases/genetics
- N-Acetylglucosaminyltransferases/metabolism
- Polysaccharides/metabolism
- Real-Time Polymerase Chain Reaction
- Receptors, CCR2/genetics
- Receptors, CCR2/metabolism
- Receptors, CCR6/genetics
- Receptors, CCR6/metabolism
- Trichuriasis/genetics
- Trichuriasis/metabolism
- Trichuris/pathogenicity
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Affiliation(s)
- Sarah C. Mullaly
- The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Menno J. Oudhoff
- The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Paul H. Min
- The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Kyle Burrows
- The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Frann Antignano
- The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - David G. Rattray
- The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Alistair Chenery
- The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Kelly M. McNagny
- The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Hermann J. Ziltener
- The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Colby Zaph
- The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- * E-mail:
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12
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Scherberich A, Di Maggio ND, McNagny KM. A familiar stranger: CD34 expression and putative functions in SVF cells of adipose tissue. World J Stem Cells 2013; 5:1-8. [PMID: 23362435 PMCID: PMC3557347 DOI: 10.4252/wjsc.v5.i1.1] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 09/19/2012] [Accepted: 12/20/2012] [Indexed: 02/06/2023] Open
Abstract
Human adipose tissue obtained by liposuction is easily accessible and an abundant potential source of autologous cells for regenerative medicine applications. After digestion of the tissue and removal of differentiated adipocytes, the so-called stromal vascular fraction (SVF) of adipose, a mix of various cell types, is obtained. SVF contains mesenchymal fibroblastic cells, able to adhere to culture plastic and to generate large colonies in vitro, that closely resemble bone marrow-derived colony forming units-fibroblastic, and whose expanded progeny, adipose mesenchymal stem/stromal cells (ASC), show strong similarities with bone marrow mesenchymal stem cells. The sialomucin CD34, which is well known as a hematopoietic stem cell marker, is also expressed by ASC in native adipose tissue but its expression is gradually lost upon standard ASC expansion in vitro. Surprisingly little is known about the functional role of CD34 in the biology and tissue forming capacity of SVF cells and ASC. The present editorial provides a short introduction to the CD34 family of sialomucins and reviews the data from the literature concerning expression and function of these proteins in SVF cells and their in vitro expanded progeny.
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Affiliation(s)
- Arnaud Scherberich
- Arnaud Scherberich, Nunzia Di Maggio, Department of Biomedicine, University and University Hospital of Basel, CH-4031 Basel, Switzerland
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13
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Mouse models to evaluate the function of genes associated with allergic airway disease. Curr Opin Allergy Clin Immunol 2013; 12:467-74. [PMID: 22885889 DOI: 10.1097/aci.0b013e328357cc17] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW In recent years, considerable effort has been invested in developing mouse models of allergic airway disease, as a means of evaluating the role of select genes in its pathophysiology. Here, we review the principal models used in this field, including models of allergic asthma and hypersensitivity pneumonitis. As an example of how these models can reveal novel functional roles for genes, we review our work showing a role for the stem-cell-associated gene, Cd34. Through this example, we illustrate the genetic and immunological strategies available in the field to better understand allergic airway inflammation. RECENT FINDINGS CD34 was found to play an important role in the development of two different models of allergic disease, that is, Th2-driven allergic asthma and Th17-driven hypersensitivity pneumonitis. Using a combination of genetically modified mice as well as cell transfers and chimeric mice, we showed that CD34 is important for the efficient trafficking of hematopoietic subsets into and out of the lung, including mast cells, eosinophils and dendritic cells. SUMMARY The currently available array of mutant mice and animal models of allergic disease now offers an opportunity to make profound insights into these diseases and provide preclinical models for the development of therapeutics.
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14
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Abstract
Typically, hematopoietic stem/progenitor cells (HSPCs) reside within the bone marrow (BM) where they give rise to all hematopoietic populations. However, HSPCs also constantly egress from the BM into the blood and circulate through the peripheral tissues where upon encounter with inflammatory stimuli and epithelial cell-derived cytokines they rapidly release very high levels of Th2 cytokines/chemokines and differentiate into Th2 effector cells. The novel concept of the dual function of HSPCs as hematopoietic precursors and potent Th2 cytokine producers has important clinical implications in various inflammatory conditions, including allergic diseases.
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Affiliation(s)
- Z Allakhverdi
- Laboratory on Allergy Research, CHUM Research Center, Notre-Dame Hospital, Montreal, QC, Canada.
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