1
|
Wang W, Liu M, Zhang M, Sun W, Zhang J, Jia L. Agaricus blazei Murill polysaccharides alleviate oxidative stress and inflammatory responses against liver and lung injury. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
2
|
Sun W, Feng Y, Zhang M, Song X, Jia L. Protective effects of sulfated polysaccharides from Lentinula edodes on the lung and liver of MODS mice. Food Funct 2021; 12:6389-6402. [PMID: 34057170 DOI: 10.1039/d1fo00399b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, the effects of sulfated polysaccharides from Lentinula edodes (SPLE) on zymosan (ZYM)-induced multiple organ dysfunction syndrome (MODS) mice were investigated. Using the MODS mice model, biochemical works have already shown that in mice treated with SPLE, the lung parameters of GGT, C3 and hs-CRP were down-regulated and the hepatic parameters of TC, TG, ALT and AST, HDLC, LDL-C and VLDL-C were improved, the serum levels of CK, Cr and Amy were decreased, and the levels of inflammatory factors such as TNF-α, IL-1β, IL-6 and IL-10 were also reduced, the activity of antioxidant enzymes SOD and CAT enhanced, and the content of MDA was reduced. In addition, histopathology of the lung and liver confirmed the beneficial effects of SPLE on MODS mice, indicating that SPLE played a role in protecting the organ function of MODS mice. In addition, SPLE was characterized as a sulfated β-glucan linked by β-type glycosidic bonds. These conclusions indicated that SPLE had effective antioxidant and anti-inflammatory activities, and could be used as a functional food and medicine to prevent MODS.
Collapse
Affiliation(s)
- Wenxue Sun
- College of Life Science, Shandong Agricultural University, Taian 271018, PR China. :
| | | | | | | | | |
Collapse
|
3
|
Characterization and Hepatoprotections of Ganoderma lucidum Polysaccharides against Multiple Organ Dysfunction Syndrome in Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9703682. [PMID: 33613827 PMCID: PMC7876828 DOI: 10.1155/2021/9703682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 09/18/2020] [Accepted: 01/17/2021] [Indexed: 01/14/2023]
Abstract
Background The liver is one of the most commonly affected organs in multiple organ dysfunction syndrome (MODS). In recent years, there have been many studies on Ganoderma lucidum polysaccharides (GLP), but the role of GLP in MODS is still unclear. The purpose of this work was to explore the antioxidant, anti-inflammatory, and protective effects of GLP on the liver in MODS model mice. Methods The characteristic properties of GLP were processed by physicochemical analysis. The MODS models were successfully established with intraperitoneal injection of zymosan in Kunming strain mice. The antioxidant, anti-inflammatory, and hepatoprotective effects of GLP were processed both in vitro and in vivo by evaluating the oxidative parameters, inflammatory factors, and liver pathological observations. Results The characterization analysis revealed that GLP was a pyranose mainly composed of glucose with the molecular weights (Mw) of 8309 Da. The experimental results proved that GLP had potential hepatoprotection possibly by improving the antioxidant status (scavenging excessive oxygen radicals, increasing the antioxidant enzyme activities, and reducing the lipid peroxide), alleviating the inflammatory response (reducing the inflammatory factor levels), and guaranteeing the liver functions. Conclusions This research suggested that GLP had the potential to be developed as a natural medicine for the treatment of multiple organ failure.
Collapse
|
4
|
Wosen JE, Ilstad-Minnihan A, Co JY, Jiang W, Mukhopadhyay D, Fernandez-Becker NQ, Kuo CJ, Amieva MR, Mellins ED. Human Intestinal Enteroids Model MHC-II in the Gut Epithelium. Front Immunol 2019; 10:1970. [PMID: 31481960 PMCID: PMC6710476 DOI: 10.3389/fimmu.2019.01970] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 08/05/2019] [Indexed: 01/14/2023] Open
Abstract
The role of intestinal epithelial cells (IECs) in mucosal tolerance and immunity remains poorly understood. We present a method for inducing MHC class II (MHC-II) in human enteroids, "mini-guts" derived from small intestinal crypt stem cells, and show that the intracellular MHC-II peptide-pathway is intact and functional in IECs. Our approach enables human enteroids to be used for novel in vitro studies into IEC MHC-II regulation and function during health and disease.
Collapse
Affiliation(s)
- Jonathan E. Wosen
- Program in Immunology, Department of Pediatrics, Stanford University, Stanford, CA, United States
| | | | - Julia Y. Co
- Division of Infectious Diseases, Department of Pediatrics, Stanford University, Stanford, CA, United States
| | - Wei Jiang
- Program in Immunology, Department of Pediatrics, Stanford University, Stanford, CA, United States
| | - Dhriti Mukhopadhyay
- Program in Immunology, Department of Pediatrics, Stanford University, Stanford, CA, United States
| | - Nielsen Q. Fernandez-Becker
- Division of Gastroenterology and Hepatology, Department of Medicine, Stanford University, Stanford, CA, United States
| | - Calvin J. Kuo
- Division of Hematology, Department of Medicine, Stanford University, Stanford, CA, United States
| | - Manuel R. Amieva
- Division of Infectious Diseases, Department of Pediatrics, Stanford University, Stanford, CA, United States
- Department of Microbiology and Immunology, Stanford University, Stanford, CA, United States
| | - Elizabeth D. Mellins
- Program in Immunology, Department of Pediatrics, Stanford University, Stanford, CA, United States
| |
Collapse
|
5
|
Letendre C, Auger JP, Lemire P, Galbas T, Gottschalk M, Thibodeau J, Segura M. Streptococcus suis Serotype 2 Infection Impairs Interleukin-12 Production and the MHC-II-Restricted Antigen Presentation Capacity of Dendritic Cells. Front Immunol 2018; 9:1199. [PMID: 29899744 PMCID: PMC5988873 DOI: 10.3389/fimmu.2018.01199] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 05/14/2018] [Indexed: 01/18/2023] Open
Abstract
Streptococcus suis is an important swine pathogen and emerging zoonotic agent. Encapsulated strains of S. suis modulate dendritic cell (DC) functions, leading to poorly activated CD4+ T cells. However, the antigen presentation ability of S. suis-stimulated DCs has not been investigated yet. In this work, we aimed to characterize the antigen presentation profiles of S. suis-stimulated DCs, both in vitro and in vivo. Upon direct activation in vitro, S. suis-stimulated murine bone marrow-derived DCs (bmDCs) preserved their antigen capture/processing capacities. However, they showed delayed kinetics of MHC-II expression compared to lipopolysaccharide-stimulated bmDCs. Meanwhile, splenic DCs from infected mice exhibited a compromised MHC-II expression, despite an appropriate expression of maturation markers. To identify potential interfering mechanisms, Class II Major Histocompatibility Complex Transactivator (CIITA) and membrane-associated RING-CH (MARCH)1/8 transcription were studied. S. suis-stimulated DCs maintained low levels of CIITA at early time points, both in vitro and in vivo, which could limit their ability to increase MHC-II synthesis. S. suis-stimulated DCs also displayed sustained/upregulated levels of MARCH1/8, thus possibly leading to MHC-II lysosomal degradation. The bacterial capsular polysaccharide played a partial role in this modulation. Finally, interleukin (IL)-12p70 production was inhibited in splenic DCs from infected mice, a profile compatible with DC indirect activation by pro-inflammatory compounds. Consequently, these cells induced lower levels of IL-2 and TNF-α in an antigen-specific CD4+ T cell presentation assay and blunted T cell CD25 expression. It remains unclear at this stage whether these phenotypical and transcriptional modulations observed in response to S. suis in in vivo infections are part of a bacterial immune evasion strategy or rather a feature common to systemic inflammatory response-inducing agents. However, it appears that the MHC-II-restricted antigen presentation and Th1-polarizing cytokine production capacities of DCs are impaired during S. suis infection. This study highlights the potential consequences of inflammation on the type and magnitude of the immune response elicited by a pathogen.
Collapse
Affiliation(s)
- Corinne Letendre
- Laboratory of Immunology, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - Jean-Philippe Auger
- Laboratory of Research on Streptococcus suis, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - Paul Lemire
- Laboratory of Immunology, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - Tristan Galbas
- Laboratory of Molecular Immunology, Department of Microbiology, Infectiology and Immunology, University of Montreal, Montreal, QC, Canada
| | - Marcelo Gottschalk
- Laboratory of Research on Streptococcus suis, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - Jacques Thibodeau
- Laboratory of Molecular Immunology, Department of Microbiology, Infectiology and Immunology, University of Montreal, Montreal, QC, Canada
| | - Mariela Segura
- Laboratory of Immunology, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| |
Collapse
|
6
|
Zhu Y, Li W, Yang B, Zhang Z, Ai H, Ren J, Huang L. Signatures of Selection and Interspecies Introgression in the Genome of Chinese Domestic Pigs. Genome Biol Evol 2018; 9:2592-2603. [PMID: 29016799 PMCID: PMC5632314 DOI: 10.1093/gbe/evx186] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2017] [Indexed: 12/17/2022] Open
Abstract
Chinese domestic pigs have experienced strong artificial selection for thousands of years. However, the molecular mechanisms underlying the selection-causing phenotypic changes in Chinese domestic pigs are still largely unknown. Here we used whole-genome resequencing data of 54 pigs from 9 Chinese diverse breeds and 16 wild boars from 7 localities across China to identify genes that show evidence of positive selection in the process of domestication. A total of 14 candidate domestication regions were detected by selective sweep analyses of genetic differentiation and variability, and a set of genes in these candidate domestication regions were found to be related to metabolic process, development, reproduction, olfactory, behavior, and nervous system. The most promising candidate gene under selection - TBX19 - probably underlies the metabolic alteration and developmental traits, and may also associate with timidity of Chinese domestic pigs. Intriguingly, we found that the haplotype at TBX19 locus shared by nearly all Chinese domestic pigs was possibly introgressed from another Sus species. We also revealed the AHR gene associated with female reproduction is under strong positive selection. These results advance our understanding of the evolutionary history of Chinese domestic pigs and shed insights into identifying functionally important genes/mutations contributing to the phenotypic diversity in pigs.
Collapse
Affiliation(s)
- Yaling Zhu
- State Key Laboratory of Pig Genetic Improvement and Production Technology, Jiangxi Agricultural University, Nanchang, China
| | - Wanbo Li
- State Key Laboratory of Pig Genetic Improvement and Production Technology, Jiangxi Agricultural University, Nanchang, China
| | - Bin Yang
- State Key Laboratory of Pig Genetic Improvement and Production Technology, Jiangxi Agricultural University, Nanchang, China
| | - Zhiyan Zhang
- State Key Laboratory of Pig Genetic Improvement and Production Technology, Jiangxi Agricultural University, Nanchang, China
| | - Huashui Ai
- State Key Laboratory of Pig Genetic Improvement and Production Technology, Jiangxi Agricultural University, Nanchang, China
| | - Jun Ren
- State Key Laboratory of Pig Genetic Improvement and Production Technology, Jiangxi Agricultural University, Nanchang, China
| | - Lusheng Huang
- State Key Laboratory of Pig Genetic Improvement and Production Technology, Jiangxi Agricultural University, Nanchang, China
| |
Collapse
|
7
|
Ershov NI, Bondar NP, Lepeshko AA, Reshetnikov VV, Ryabushkina JA, Merkulova TI. Consequences of early life stress on genomic landscape of H3K4me3 in prefrontal cortex of adult mice. BMC Genomics 2018; 19:93. [PMID: 29504911 PMCID: PMC5836825 DOI: 10.1186/s12864-018-4479-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Maternal separation models in rodents are widely used to establish molecular mechanisms underlying prolonged effects of early life adversity on neurobiological and behavioral outcomes in adulthood. However, global epigenetic signatures following early life stress in these models remain unclear. Results In this study, we carried out a ChIP-seq analysis of H3K4 trimethylation profile in the prefrontal cortex of adult male mice with a history of early life stress. Two types of stress were used: prolonged separation of pups from their mothers (for 3 h once a day, maternal separation, MS) and brief separation (for 15 min once a day, handling, HD). Adult offspring in the MS group demonstrated reduced locomotor activity in the open field test accompanied by reduced exploratory activity, while the HD group showed decreased anxiety-like behavior only. In a group of maternal separation, we have found a small number (45) of slightly up-regulated peaks, corresponding to promoters of 70 genes, while no changes were observed in a group of handling. Among the genes whose promoters have differential enrichment of H3K4me3, the most relevant ones participate in gene expression regulation, modulation of chromatin structure and mRNA processing. For two genes, Ddias and Pip4k2a, increased H3K4me3 levels were associated with the increased mRNA expression in MS group. Conclusion The distribution of H3K4me3 in prefrontal cortex showed relatively low variability across all individuals, and only some subtle changes were revealed in mice with a history of early life stress. It is possible that the observed long-lasting behavioral alterations induced by maternal separation are mediated by other epigenetic mechanisms, or other brain structures are responsible for these effects. Electronic supplementary material The online version of this article (10.1186/s12864-018-4479-2) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Nikita I Ershov
- Laboratory of Gene Expression Regulation, Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 10 Prospect Lavrentyeva, 630090, Novosibirsk, Russia
| | - Natalya P Bondar
- Laboratory of Gene Expression Regulation, Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 10 Prospect Lavrentyeva, 630090, Novosibirsk, Russia. .,Novosibirsk National Research State University, 2 Pirogov Street, 630090, Novosibirsk, Russia.
| | - Arina A Lepeshko
- Laboratory of Gene Expression Regulation, Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 10 Prospect Lavrentyeva, 630090, Novosibirsk, Russia.,Novosibirsk National Research State University, 2 Pirogov Street, 630090, Novosibirsk, Russia
| | - Vasiliy V Reshetnikov
- Laboratory of Gene Expression Regulation, Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 10 Prospect Lavrentyeva, 630090, Novosibirsk, Russia
| | - Julia A Ryabushkina
- Novosibirsk National Research State University, 2 Pirogov Street, 630090, Novosibirsk, Russia
| | - Tatiana I Merkulova
- Laboratory of Gene Expression Regulation, Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 10 Prospect Lavrentyeva, 630090, Novosibirsk, Russia.,Novosibirsk National Research State University, 2 Pirogov Street, 630090, Novosibirsk, Russia
| |
Collapse
|
8
|
Effects of insulin combined with ethyl pyruvate on inflammatory response and oxidative stress in multiple-organ dysfunction syndrome rats with severe burns. Am J Emerg Med 2016; 34:2154-2158. [DOI: 10.1016/j.ajem.2016.08.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 08/01/2016] [Accepted: 08/06/2016] [Indexed: 01/08/2023] Open
|
9
|
The Membrane Associated RING-CH Proteins: A Family of E3 Ligases with Diverse Roles through the Cell. INTERNATIONAL SCHOLARLY RESEARCH NOTICES 2014; 2014:637295. [PMID: 27419207 PMCID: PMC4897099 DOI: 10.1155/2014/637295] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 08/22/2014] [Indexed: 01/03/2023]
Abstract
Since the discovery that conjugation of ubiquitin to proteins can drive proteolytic degradation, ubiquitination has been shown to perform a diverse range of functions in the cell. It plays an important role in endocytosis, signal transduction, trafficking of vesicles inside the cell, and even DNA repair. The process of ubiquitination-mediated control has turned out to be remarkably complex, involving a diverse array of proteins and many levels of control. This review focuses on a family of structurally related E3 ligases termed the membrane-associated RING-CH (MARCH) ubiquitin ligases, which were originally discovered as structural homologs to the virals E3s, K3, and K5 from Kaposi's sarcoma-associated herpesvirus (KSHV). These proteins contain a catalytic RING-CH finger and are typically membrane-bound, with some having up to 14 putative transmembrane domains. Despite several lines of evidence showing that the MARCH proteins play a complex and essential role in several cellular processes, this family remains understudied.
Collapse
|