1
|
Boccardi V, Marano L. Improving geriatric outcomes through nutritional and immunonutritional strategies: Focus on surgical setting by a comprehensive evidence review. Ageing Res Rev 2024; 96:102272. [PMID: 38492809 DOI: 10.1016/j.arr.2024.102272] [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: 12/29/2023] [Revised: 02/27/2024] [Accepted: 03/12/2024] [Indexed: 03/18/2024]
Abstract
The aging population worldwide has led to an increased request for surgical interventions in older, geriatric, and frail patients. However, all the physiological changes related to aging are associated with many challenges in the perioperative period, strongly impacting surgical outcomes. Nutritional status plays a pivotal role in determining the resilience of older adults to surgical stress and their ability to recover postoperatively. It is well known that malnutrition, a prevalent concern in geriatrics, is linked to increased adverse outcomes, including morbidity and mortality. Recognizing the significance of preoperative nutritional screening, assessment, diagnosis, intervention, and monitoring is essential for optimizing surgical outcomes. In this context, immunonutrition, which involves the supplementation of specific nutrients to modulate immune responses, emerges as a promising strategy to mitigate the increased inflammatory response observed in geriatric surgical patients. This study reviews current literature on the impact of nutrition and immunonutrition on surgical outcomes in geriatrics, highlighting the potential benefits in terms of reduced complications, enhanced wound healing, and shortened hospital stays. Recognizing and addressing the specific nutritional needs of older persons undergoing surgery is essential for promoting successful surgical outcomes and improving overall quality of life in this vulnerable population.
Collapse
Affiliation(s)
- Virginia Boccardi
- Section of Gerontology and Geriatrics, Department of Medicine and Surgery, University of Perugia, Piazzale Gambuli 1, Perugia 06132, Italy.
| | - Luigi Marano
- Department of Medicine, Academy of Applied Medical and Social Sciences-AMiSNS: Akademia Medycznych I Spolecznych Nauk Stosowanych, 2 Lotnicza Street, Elbląg 82-300, Poland; Department of General Surgery and Surgical Oncology, "Saint Wojciech" Hospital, "Nicolaus Copernicus" Health Center, Jana Pawła II 50, Gdańsk 80-462, Poland
| |
Collapse
|
2
|
Jurčacková Z, Ciglanová D, Mudroňová D, Tumová L, Bárcenas-Pérez D, Kopecký J, Koščová J, Cheel J, Hrčková G. Astaxanthin Extract from Haematococcus pluvialis and Its Fractions of Astaxanthin Mono- and Diesters Obtained by CCC Show Differential Antioxidant and Cytoprotective Effects on Naïve-Mouse Spleen Cells. Antioxidants (Basel) 2023; 12:1144. [PMID: 37371874 DOI: 10.3390/antiox12061144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/17/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
Carotenoids are the most abundant lipid-soluble phytochemicals and are used as dietary supplements to protect against diseases caused by oxidative stress. Astaxanthin, a xanthophyll carotenoid, is a very potent antioxidant with numerous beneficial effects on cellular functions and signaling pathways. In this study, using spleen cells from healthy Balb/c mice, we report the bio-functional effects of an astaxanthin-rich extract (EXT) prepared from the microalga Haematococcus pluvialis and its astaxanthin monoesters-rich fraction (ME) and astaxanthin diesters-rich fraction (DE) obtained by fractionation of EXT using countercurrent chromatography (CCC). After incubation under standard culture conditions (humidity, 37 °C, 5% CO2, atmospheric oxygen), the viability of untreated splenocytes, as determined by the trypan blue exclusion assay, the MTT assay, and the neutral red assay, decreases to approximately 75% after 24 h compared with naïve splenocytes. This effect correlated with the decrease in mitochondrial membrane potential and the transition of ~59% of cells to the early stage of apoptosis, as well as with the decreased ROS production, indicating that hyperoxia in cell-culture deteriorates cell functions. They are restored or stimulated by co-cultivation with EXT, ME, and DE up to 10 µg/mL in the order EXT > DE > ME, suggesting that esterification increases bioavailability to cells in vitro. ROS and H2O2 concentrations reflect mRNA transcriptional activity of Nrf2, superoxide dismutase 1 (SOD1), catalase, and glutathione peroxidase 1, as well as SOD-mediated ROS conversion, whereas they inversely correlate with iNOS-mediated NO production. The highest-tested concentration of EXT, ME, and DE (40 µg/mL) is detrimental to cells, probably because of the overwhelming scavenging activity of astaxanthin and its esters for the reactive oxygen/nitrogen species required for cellular functions and signal transduction at low physiological concentrations. In this study, we demonstrate that differential activities of ME and DE contribute to the final antioxidant and cytoprotective effects of astaxanthin extract, which is beneficial in preventing a wide range of ROS-induced adverse effects, with DE being more effective. In addition, the selection of physioxia-like conditions for pharmacological research is highlighted.
Collapse
Affiliation(s)
- Zuzana Jurčacková
- Institute of Parasitology, The Slovak Academy of Sciences, Hlinkova 3, 04001 Košice, Slovakia
- Department of Microbiology and Immunology, University of Veterinary Medicine and Pharmacy, Komenského 68, 04181 Košice, Slovakia
| | - Denisa Ciglanová
- Institute of Parasitology, The Slovak Academy of Sciences, Hlinkova 3, 04001 Košice, Slovakia
- Department of Microbiology and Immunology, University of Veterinary Medicine and Pharmacy, Komenského 68, 04181 Košice, Slovakia
| | - Dagmar Mudroňová
- Department of Microbiology and Immunology, University of Veterinary Medicine and Pharmacy, Komenského 68, 04181 Košice, Slovakia
| | - Lenka Tumová
- Department of Pharmacognosy and Botany, Faculty of Pharmacy Hradec Králové, Charles University, Heyrovského 1203, 50165 Hradec Králové, Czech Republic
| | - Daniela Bárcenas-Pérez
- Laboratory of Algal Biotechnology-Centre ALGATECH, Institute of Microbiology of the Czech Academy of Sciences, Opatovický mlýn, 37981 Třeboň, Czech Republic
- Faculty of Science, University of South Bohemia, Branišovská 1760, 37005 České Budějovice, Czech Republic
| | - Jiří Kopecký
- Laboratory of Algal Biotechnology-Centre ALGATECH, Institute of Microbiology of the Czech Academy of Sciences, Opatovický mlýn, 37981 Třeboň, Czech Republic
| | - Jana Koščová
- Laboratory of Algal Biotechnology-Centre ALGATECH, Institute of Microbiology of the Czech Academy of Sciences, Opatovický mlýn, 37981 Třeboň, Czech Republic
| | - José Cheel
- Laboratory of Algal Biotechnology-Centre ALGATECH, Institute of Microbiology of the Czech Academy of Sciences, Opatovický mlýn, 37981 Třeboň, Czech Republic
| | - Gabriela Hrčková
- Institute of Parasitology, The Slovak Academy of Sciences, Hlinkova 3, 04001 Košice, Slovakia
| |
Collapse
|
3
|
Ji F, Chen L, Chen Z, Luo B, Wang Y, Lan X. TCR repertoire and transcriptional signatures of circulating tumour-associated T cells facilitate effective non-invasive cancer detection. Clin Transl Med 2022; 12:e853. [PMID: 36134717 PMCID: PMC9494610 DOI: 10.1002/ctm2.853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 04/11/2022] [Accepted: 04/15/2022] [Indexed: 11/10/2022] Open
Affiliation(s)
- Fansen Ji
- Tsinghua-Peking Center for Life Sciences, MOE Key Laboratory of Tsinghua University, Beijing, China.,School of Medicine, Tsinghua University, Beijing, China
| | - Lin Chen
- School of Medicine, Tsinghua University, Beijing, China.,General Surgery Department, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Zhizhuo Chen
- School of Life Science, Tsinghua University, Beijing, China
| | - Bin Luo
- General Surgery Department, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Yongwang Wang
- Department of Anesthesiology, Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Xun Lan
- Tsinghua-Peking Center for Life Sciences, MOE Key Laboratory of Tsinghua University, Beijing, China.,School of Medicine, Tsinghua University, Beijing, China
| |
Collapse
|
4
|
Takenaka Y, Tanaka R, Kitabatake K, Kuramochi K, Aoki S, Tsukimoto M. Profiling Differential Effects of 5 Selective Serotonin Reuptake Inhibitors on TLRs-Dependent and -Independent IL-6 Production in Immune Cells Identifies Fluoxetine as Preferred Anti-Inflammatory Drug Candidate. Front Pharmacol 2022; 13:874375. [PMID: 35814203 PMCID: PMC9257214 DOI: 10.3389/fphar.2022.874375] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 05/26/2022] [Indexed: 12/26/2022] Open
Abstract
Excessive proinflammatory cytokine production induced by abnormal activation of Toll-like receptor (TLR) signaling, for example, by SARS-CoV-2 infection, can cause a fatal cytokine storm. The selective serotonin reuptake inhibitors (SSRIs) fluoxetine and fluvoxamine, used to treat depression, were recently reported to reduce the risk of severe disease in patients with coronavirus disease 2019 (COVID-19), but the mechanisms of the anti-inflammatory effects of SSRIs, and which SSRI would be most suitable as an anti-inflammatory drug, remain unclear. Here, we examined the inhibitory effects of 5 FDA-approved SSRIs, paroxetine, fluoxetine, fluvoxamine, sertraline and escitalopram, on the production of interleukin-6 (IL-6) induced by stimulation with multiple TLR agonists in murine macrophages and dendritic cells, and on the production of cytokines induced by concanavalin A in murine lymphocytes. In J774.1 murine macrophage cells, pretreatment with SSRIs significantly suppressed IL-6 release induced by TLR3 agonist poly(I:C), TLR4 agonist LPS or TLR9 agonist CpG ODN, but did not affect IL-6 release induced by TLR7 agonists imiquimod or resiquimod. In accordance with the results obtained in J774.1 cells, pretreatment with SSRIs also suppressed IL-6 release induced by a TLR3, TLR4 or TLR9 agonist in bone marrow-derived dendritic cells and peritoneal cells of C57BL/6 mice. On the other hand, interestingly, sertraline alone among the SSRIs amplified IL-6 production induced by TLR7 agonists in murine dendritic cells, though not in macrophages. Concanavalin A-induced production of IL-6 or IL-2 in murine lymphocytes was suppressed by SSRIs, suggesting that SSRIs also inhibit TLRs-independent IL-6 production. Since SSRIs suppressed both IL-6 production induced by multiple TLR agonists in macrophages or dendritic cells and TLR-independent IL-6 production in lymphocytes, they are promising candidates for treatment of patients with cytokine storm, which is mediated by overactivation of multiple TLRs in a complex manner, leading to the so-called IL-6 amplifier, an IL-6 overproduction loop. However, the 5 SSRIs examined here all showed different effects. Overall, our results suggest that fluoxetine may be the most promising candidate as an anti-inflammatory drug. An examination of the structural requirements indicated that the N-methyl group of fluoxetine has a critical role in the inhibition of IL-6 production.
Collapse
Affiliation(s)
- Yohei Takenaka
- Department of Radiation Biosciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Ryu Tanaka
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan
| | - Kazuki Kitabatake
- Department of Radiation Biosciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Kouji Kuramochi
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan
| | - Shin Aoki
- Department of Bioorganic and Bioinorganic Chemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
- Research Institute for Science and Technology (RIST), Tokyo University of Science, Chiba, Japan
| | - Mitsutoshi Tsukimoto
- Department of Radiation Biosciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
- Research Institute for Science and Technology (RIST), Tokyo University of Science, Chiba, Japan
- *Correspondence: Mitsutoshi Tsukimoto,
| |
Collapse
|
5
|
Al-Hamrashdi A, Al-Habsi K, Elshafie EI, Johnson EH. Comparison of the oxidative respiratory burst and mitogen-induced leukocyte responses of camels, goats, sheep, and cows. Vet World 2022; 15:1398-1407. [PMID: 35993061 PMCID: PMC9375205 DOI: 10.14202/vetworld.2022.1398-1407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/22/2022] [Indexed: 11/16/2022] Open
Abstract
Background and Aim: The reports from the Ministry of Agriculture and Fisheries suggest that camels suffer less compared to goats, sheep, and cows from a number of common infectious diseases in Oman. However, there is no immunological evidence to substantiate this claim. This present study is, therefore, an attempt to study the immunological responses of camels, goats, sheep, and cows by comparing their oxidative respiratory burst of peripheral blood leukocytes (PBLs) as a marker of innate immunity occurring during phagocytosis and the mitogenic responses of their peripheral blood mononuclear leukocytes (PBMLs) as a marker of their adaptive immune response. Materials and Methods: Ten female adult animals (n = 10) were selected from each species (goats, sheep, and cows). The goats, sheep, and cows were maintained at the Agricultural Experiment Station, while camels were kept at the Royal Camel Corps (RCC). Blood samples were collected from the jugular vein in 7 mL of heparin and ethylenediaminetetraacetic acid vacutainer tubes. The oxidative respiratory burst of PBLs was measured using a chemiluminescence (CL) assay. Reactants consisted of 75 mL of whole blood diluted (1:50), 75 mL of luminol/isoluminol, and 75 mL of zymosan opsonized with non-heat inactivated serum/heat-inactivated serum or non-opsonized zymosan. CL responses were measured as relative light units and expressed as the mean count per minute and peak CL values. The mitogenic response of PBMLs to concanavalin A (Con-A), phytohemagglutinin (PHA), and pokeweed mitogen (PWM) was tested using a WST-8 assay and read spectrophotometrically at 450 nm. Results: The present findings showed that camel PBLs generate significantly higher CL responses, both intracellularly as well as extracellularly, with zymosan opsonized with autologous serum. Camel PBLs demonstrated a significantly higher (p = 0.001) response when stimulated with zymosan opsonized with heat-inactivated serum compared to those of goat, sheep, and cow lymphocytes from camels exhibited significantly higher (p = 0.001) stimulation indices (SI) with Con-A, PHA, and PWM. Conclusion: The present study suggests that camels are capable of mounting both superior innate as well as adaptive immune responses and provide immunological evidence supporting the belief of some authors, who have proposed that camels are less susceptible to a number of common infectious diseases than other domesticated ruminants.
Collapse
Affiliation(s)
- Abeer Al-Hamrashdi
- Department of Animal and Veterinary Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Muscat, Oman
| | - Khalid Al-Habsi
- Department of Animal and Veterinary Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Muscat, Oman
| | - Elshafie I. Elshafie
- Department of Animal and Veterinary Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Muscat, Oman; Central Veterinary Research Laboratory, Al Amarat, Khartoum, Sudan
| | - Eugene H. Johnson
- Department of Animal and Veterinary Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Muscat, Oman
| |
Collapse
|
6
|
Xu XY, Dhandapani S, Mi XJ, Park HR, Kim YJ. Immune-enhancing efficacy of Curtobacterium proimmune K3 lysates isolated from Panax ginseng beverages in cyclophosphamide-induced immunosuppressed mice. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
7
|
d-mannose administration improves autoimmune hepatitis by upregulating regulatory T cells. Cell Immunol 2022; 375:104517. [DOI: 10.1016/j.cellimm.2022.104517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 01/26/2022] [Accepted: 03/30/2022] [Indexed: 12/28/2022]
|
8
|
Genç D, Günaydın B, Sezgin S, Aladağ A, Tarhan EF. Immunoregulatory effects of dental mesenchymal stem cells on T and B lymphocyte responses in primary Sjögren's syndrome. Immunotherapy 2022; 14:225-247. [PMID: 35012368 DOI: 10.2217/imt-2021-0174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background: In this article, the authors investigate the modulatory effects of dental mesenchymal stem cells (MSCs) on lymphocyte responses in primary Sjögren's syndrome (pSS), which is an autoimmune disease resulting from keratoconjunctivitis sicca and xerostomia. Methods: Mononuclear cells isolated from pSS patients cultured with or without dental MSCs and analyzed for lymphocyte responses via flow cytometry. Results: Dental-follicle (DF)- and dental-pulp (DP)-MSCs downregulated CD4+ T lymphocyte proliferation by increasing Fas-ligand expression on T lymphocytes and FoxP3 expressing Tregs, and decreasing intracellular IFN-γ and IL-17 secretion in pSS patients. DF-MSCs decreased the plasma B cell ratio in the favor of naive B cell population in pSS patients' mononuclear cells. Conclusion: DF- and DP-MSCs can be the new cellular therapeutic candidates for the regulation of immune responses in pSS.
Collapse
Affiliation(s)
- Deniz Genç
- Muğla Sıtkı Koçman University, Faculty of Health Sciences, Muğla, 48000, Turkey.,Muğla Sıtkı Koçman University, Research Laboratories Center, Muğla, 48000, Turkey
| | - Burcu Günaydın
- Department of Histology & Embryology, Muğla Sıtkı Koçman University, Institute of Health Sciences, Muğla, 48000, Turkey
| | - Serhat Sezgin
- Muğla Sıtkı Koçman University, Faculty of Dentistry, Muğla, 48000, Turkey
| | - Akın Aladağ
- Muğla Sıtkı Koçman University, Faculty of Dentistry, Muğla, 48000, Turkey
| | - Emine Figen Tarhan
- Department of Rheumatology, Muğla Sıtkı Koçman University, Faculty of Medicine, Muğla, 48000, Turkey
| |
Collapse
|
9
|
Mustafa N, Mitxelena J, Infante A, Zenarruzabeitia O, Eriz A, Iglesias-Ara A, Zubiaga AM. E2f2 Attenuates Apoptosis of Activated T Lymphocytes and Protects from Immune-Mediated Injury through Repression of Fas and FasL. Int J Mol Sci 2021; 23:ijms23010311. [PMID: 35008734 PMCID: PMC8745065 DOI: 10.3390/ijms23010311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/20/2021] [Accepted: 12/25/2021] [Indexed: 12/03/2022] Open
Abstract
Targeted disruption of E2f2 in mice causes T-cell hyperactivation and a disproportionate cell cycle entry upon stimulation. However, E2f2−/− mice do not develop a lymphoproliferative condition. We report that E2f2 plays a Fas-dependent anti-apoptotic function in vitro and in vivo. TCR-stimulated murine E2f2−/− T cells overexpress the proapoptotic genes Fas and FasL and exhibit enhanced apoptosis, which is prevented by treatment with neutralizing anti-FasL antibodies. p53 pathway is activated in TCR-stimulated E2f2−/− lymphocytes, but targeted disruption of p53 in E2f2−/− mice does not abrogate Fas/FasL expression or apoptosis, implying a p53-independent apoptotic mechanism. We show that E2f2 is recruited to Fas and FasL gene promoters to repress their expression. in vivo, E2f2−/− mice are prone to develop immune-mediated liver injury owing to an aberrant lymphoid Fas/FasL activation. Taken together, our results suggest that E2f2-dependent inhibition of Fas/FasL pathway may play a direct role in limiting the development of immune-mediated pathologies.
Collapse
Affiliation(s)
- Noor Mustafa
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country, UPV/EHU, 48080 Bilbao, Spain; (N.M.); (J.M.); (A.E.)
| | - Jone Mitxelena
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country, UPV/EHU, 48080 Bilbao, Spain; (N.M.); (J.M.); (A.E.)
- Ikerbasque, Basque Foundation for Science, 48009 Bilbao, Spain
| | - Arantza Infante
- Stem Cells and Cell Therapy Laboratory, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain;
| | - Olatz Zenarruzabeitia
- Immunopathology Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain;
| | - Ainhoa Eriz
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country, UPV/EHU, 48080 Bilbao, Spain; (N.M.); (J.M.); (A.E.)
| | - Ainhoa Iglesias-Ara
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country, UPV/EHU, 48080 Bilbao, Spain; (N.M.); (J.M.); (A.E.)
- Correspondence: (A.I.-A.); (A.M.Z.); Tel.: +34-94-601-5799 (A.I.-A.); +34-94-601-2603 (A.M.Z.); Fax: +34-94-601-3143 (A.M.Z.)
| | - Ana M. Zubiaga
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country, UPV/EHU, 48080 Bilbao, Spain; (N.M.); (J.M.); (A.E.)
- Correspondence: (A.I.-A.); (A.M.Z.); Tel.: +34-94-601-5799 (A.I.-A.); +34-94-601-2603 (A.M.Z.); Fax: +34-94-601-3143 (A.M.Z.)
| |
Collapse
|
10
|
Zhang Y, Qi Z, Wang W, Wang L, Cao F, Zhao L, Fang X. Isovitexin Inhibits Ginkgolic Acids-Induced Inflammation Through Downregulating SHP2 Activation. Front Pharmacol 2021; 12:630320. [PMID: 34456714 PMCID: PMC8385789 DOI: 10.3389/fphar.2021.630320] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 07/07/2021] [Indexed: 01/28/2023] Open
Abstract
It has been reported that Celtis sinensis Pers. is employed as a folk medicine for the treatment of inflammatory diseases. But the mechanism supporting its use as anti-inflammatory remains unclear. To investigate the anti-inflammatory of Celtis sinensis Pers. ICR mice were provided Celtis sinensis Pers. leaf extract (CLE) at 100, 200 mg/kg after ginkgolic acids (GA) sensitization. Our data showed that CLE and the main flavonoid isovitexin in CLE could ameliorate GA-induced contact dermatitis in mice. Ear swelling, inflammatory cell infiltration and splenomegaly were inhibited significantly by isovitexin, while the weight loss of mice in the isovitexin-treated group was much better than that in the dexamethasone-treated group (positive control drug). It has been reported in previous research that GA-induced inflammation is closely related to the T cell response. Therefore, T cells were the focus of the anti-inflammatory effect of isovitexin in this paper. The in vivo results showed that isovitexin (10, 20 mg/kg) inhibited the expression of proinflammatory cytokines (TNF-α, IFN-γ, IL-2 and IL-17A) in lymph nodes, inhibited the secretion of cytokines into the serum from mice with contact dermatitis and promoted the expression of apoptosis-related proteins. In vitro, isovitexin also induced apoptosis and inhibited proinflammatory cytokine expression in Con A-activated T cells. Further study showed that the MAPK and STAT signaling pathways and the phosphorylation of SHP2 were inhibited by isovitexin. Both molecular docking and biological experiments indicated that SHP2 may be an anti-inflammatory target of isovitexin in T cells. Taken together, isovitexin can serve as a potential natural agent for the treatment or prevention of GA-induced inflammatory problems.
Collapse
Affiliation(s)
- Yiwei Zhang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Zhipeng Qi
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Wenjie Wang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Lei Wang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Fuliang Cao
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Linguo Zhao
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China.,Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Xianying Fang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| |
Collapse
|
11
|
Peach JT, Wilson SM, Gunderson LD, Frothingham L, Tran T, Walk ST, Yeoman CJ, Bothner B, Miles MP. Temporal metabolic response yields a dynamic biosignature of inflammation. iScience 2021; 24:102817. [PMID: 34355150 PMCID: PMC8319798 DOI: 10.1016/j.isci.2021.102817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 05/20/2021] [Accepted: 07/02/2021] [Indexed: 12/15/2022] Open
Abstract
Chronic low-grade inflammation is a subclinical condition directly and indirectly linked to the development of a wide range of diseases responsible for the vast majority of morbidity. To examine mechanisms coupled to chronic disease, a group of overweight and obese human subjects without known inflammatory diseases participated in a high-fat meal challenge as an acute inflammation stimulus. Analysis of serum metabolites grouped by baseline cytokine levels revealed that single samples had little power in differentiating groups. However, an analysis that incorporated temporal response separated inflammatory response phenotypes and allowed us to create a metabolic signature of inflammation which revealed metabolic components that are crucial to a cytokine-mediated inflammation response. The use of temporal response, rather than a single time point, improved metabolomic prediction of high postprandial inflammation responses and led to the development of a dynamic biosignature as a potential tool for stratifying risk to a wide range of diseases. Dynamic responses often provide insight into disease pathology Temporal metabolic responses to acute inflammation were explored in obese people Temporal metabolite levels differentiated low, mid, and high inflammation groups Inflammation-linked metabolites were shown to be predictors of cytokine responses
Collapse
Affiliation(s)
- Jesse T Peach
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59718, USA
| | - Stephanie M Wilson
- Department of Health and Human Development, Montana State University, Bozeman, MT 59718, USA
| | - Logan D Gunderson
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59718, USA
| | - Lizzi Frothingham
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59718, USA
| | - Tan Tran
- Department of Math, Montana State University, Bozeman, MT 59718, USA
| | - Seth T Walk
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59718, USA
| | - Carl J Yeoman
- Department of Range and Animal Sciences, Montana State University, Bozeman, MT 59718, USA
| | - Brian Bothner
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59718, USA
| | - Mary P Miles
- Department of Health and Human Development, Montana State University, Bozeman, MT 59718, USA
| |
Collapse
|
12
|
Wang L, Fang X, Hu Y, Zhang Y, Qi Z, Li J, Zhao L. Efficient extraction of bioactive flavonoids from Celtis sinensis leaves using deep eutectic solvent as green media. RSC Adv 2021; 11:17924-17935. [PMID: 35480217 PMCID: PMC9033205 DOI: 10.1039/d1ra01848e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 04/15/2021] [Indexed: 11/25/2022] Open
Abstract
In recent years, deep eutectic solvent (DES) has attracted comprehensive attention on the extraction of natural products, and is regarded as an alternative to traditional organic solvents for the environmental advantages. Twenty-six DESs were compared for their extraction yield of total flavonoids and isovitexin (the main flavonoid in Celtis sinensis) from Celtis sinensis. The results show that the extraction yields of total flavonoids by betaine/glycolic acid (DES8), ethylamine hydrochloride/1,2-propanediol (DES12) and tetrapropylammonium bromide/lactic acid (DES17) are the highest, while the extraction yields of isovitexin by ethylene glycol/malonic acid (DES23), ethylene glycol/glycolic acid (DES24) and 1,2-propanediol/glycolic acid (DES26) are the highest. The extraction conditions using the above six DESs were further optimized systematically. Under optimum conditions, the extraction rates of total flavonoids and isovitexin can be increased up to 95.39 and 10.58 mg g−1, respectively, which were significantly higher than that of methanol extraction. In order to exclude the effect of DESs on the bioactivity of Celtis sinensis extract, the macroporous resin D-101 was used to purify the total flavonoids from DESs extract, and the recovery rates of flavonoids from the above six kinds of DESs were all over 80%. Next, the anti-inflammatory activity of DES extracts was compared using a lymphocyte transformation experiment. The result showed that the inhibition rate of the DES24 extract on the proliferation of Con A-activated T cells was up to 72% with an IC50 value of 124.8 μg mL−1. None of the DESs extracted exhibited cytotoxicity on normal T cells. The mechanism of the anti-inflammatory activity against Con A-activated T cells may be that DES24 flavonoids extract induced the apoptosis of inflammatory T cells, and activated the expression of pro-apoptotic protein. Taken together, DES has showed significant advantages on the extraction of natural products for the relatively mild extraction condition, high yield and environmental-friendliness. In recent years, deep eutectic solvent (DES) has attracted comprehensive attention on the extraction of natural products, and is regarded as an alternative to traditional organic solvents for the environmental advantages.![]()
Collapse
Affiliation(s)
- Lei Wang
- College of Chemical Engineering, Nanjing Forestry University Nanjing 210037 China +86-25-85427396.,Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University Nanjing 210037 China
| | - Xianying Fang
- College of Chemical Engineering, Nanjing Forestry University Nanjing 210037 China +86-25-85427396.,Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University Nanjing 210037 China
| | - Yang Hu
- College of Chemical Engineering, Nanjing Forestry University Nanjing 210037 China +86-25-85427396
| | - Yiwei Zhang
- College of Chemical Engineering, Nanjing Forestry University Nanjing 210037 China +86-25-85427396
| | - Zhipeng Qi
- College of Chemical Engineering, Nanjing Forestry University Nanjing 210037 China +86-25-85427396
| | - Jie Li
- College of Chemical Engineering, Nanjing Forestry University Nanjing 210037 China +86-25-85427396
| | - Linguo Zhao
- College of Chemical Engineering, Nanjing Forestry University Nanjing 210037 China +86-25-85427396.,Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University Nanjing 210037 China.,Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University Nanjing 210037 China
| |
Collapse
|
13
|
Tang-Huau TL, Rosenke K, Meade-White K, Carmody A, Smith BJ, Bosio CM, Jarvis MA, Feldmann H. Mastomys natalensis Has a Cellular Immune Response Profile Distinct from Laboratory Mice. Viruses 2021; 13:v13050729. [PMID: 33922222 PMCID: PMC8145423 DOI: 10.3390/v13050729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/11/2021] [Accepted: 04/17/2021] [Indexed: 12/24/2022] Open
Abstract
The multimammate mouse (Mastomys natalensis; M. natalensis) has been identified as a major reservoir for multiple human pathogens including Lassa virus (LASV), Leishmania spp., Yersinia spp., and Borrelia spp. Although M. natalensis are related to well-characterized mouse and rat species commonly used in laboratory models, there is an absence of established assays and reagents to study the host immune responses of M. natalensis. As a result, there are major limitations to our understanding of immunopathology and mechanisms of immunological pathogen control in this increasingly important rodent species. In the current study, a large panel of commercially available rodent reagents were screened to identify their cross-reactivity with M. natalensis. Using these reagents, ex vivo assays were established and optimized to evaluate lymphocyte proliferation and cytokine production by M. natalensis lymphocytes. In contrast to C57BL/6J mice, lymphocytes from M. natalensis were relatively non-responsive to common stimuli such as phytohaemagglutinin P and lipopolysaccharide. However, they readily responded to concanavalin A stimulation as indicated by proliferation and cytokine production. In summary, we describe lymphoproliferative and cytokine assays demonstrating that the cellular immune responses in M. natalensis to commonly used mitogens differ from a laboratory-bred mouse strain.
Collapse
Affiliation(s)
- Tsing-Lee Tang-Huau
- Laboratory of Virology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, Rocky Mountain Laboratories, National Institute of Health, Hamilton, MT 59840, USA; (K.R.); (K.M.-W.)
- Correspondence: (T.-L.T.-H.); (H.F.); Tel.: +1-4063757410 (H.F.)
| | - Kyle Rosenke
- Laboratory of Virology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, Rocky Mountain Laboratories, National Institute of Health, Hamilton, MT 59840, USA; (K.R.); (K.M.-W.)
| | - Kimberly Meade-White
- Laboratory of Virology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, Rocky Mountain Laboratories, National Institute of Health, Hamilton, MT 59840, USA; (K.R.); (K.M.-W.)
| | - Aaron Carmody
- Research Technologies Branch, Rocky Mountain Laboratories, NIAID, NIH, Hamilton, MT 59840, USA;
| | - Brian J. Smith
- Rocky Mountain Veterinary Branch Division of Intramural Research, National Institute of Allergy and Infectious Diseases, Rocky Mountain Laboratories, National Institute of Health, Hamilton, MT 59840, USA;
| | - Catharine M. Bosio
- Laboratory of Bacteriology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, Rocky Mountain Laboratories, National Institute of Health, Hamilton, MT 59840, USA;
| | - Michael A. Jarvis
- Faculty of Health: Medicine, Dentistry and Human Sciences, School of Biomedical Sciences, University of Plymouth, PL4 8AA, UK;
- The Vaccine Group (TVG) Ltd., 14 Research Way, Derriford Research Facility, Plymouth Science Park, Plymouth PL6 8BU, UK
| | - Heinz Feldmann
- Laboratory of Virology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, Rocky Mountain Laboratories, National Institute of Health, Hamilton, MT 59840, USA; (K.R.); (K.M.-W.)
- Correspondence: (T.-L.T.-H.); (H.F.); Tel.: +1-4063757410 (H.F.)
| |
Collapse
|
14
|
Ledderose C, Junger WG. Mitochondria Synergize With P2 Receptors to Regulate Human T Cell Function. Front Immunol 2020; 11:549889. [PMID: 33133068 PMCID: PMC7550529 DOI: 10.3389/fimmu.2020.549889] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 08/27/2020] [Indexed: 12/17/2022] Open
Abstract
Intracellular ATP is the universal energy carrier that fuels many cellular processes. However, immune cells can also release a portion of their ATP into the extracellular space. There, ATP activates purinergic receptors that mediate autocrine and paracrine signaling events needed for the initiation, modulation, and termination of cell functions. Mitochondria contribute to these processes by producing ATP that is released. Here, we summarize the synergistic interplay between mitochondria and purinergic signaling that regulates T cell functions. Specifically, we discuss how mitochondria interact with P2X1, P2X4, and P2Y11 receptors to regulate T cell metabolism, cell migration, and antigen recognition. These mitochondrial and purinergic signaling mechanisms are indispensable for host immune defense. However, they also represent an Achilles heel that can render the host susceptible to infections and inflammatory disorders. Hypoxia and mitochondrial dysfunction deflate the purinergic signaling mechanisms that regulate T cells, while inflammation and tissue damage generate excessive systemic ATP levels that distort autocrine purinergic signaling and impair T cell function. An improved understanding of the metabolic and purinergic signaling mechanisms that regulate T cells may lead to novel strategies for the diagnosis and treatment of infectious and inflammatory diseases.
Collapse
Affiliation(s)
- Carola Ledderose
- Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Wolfgang G Junger
- Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| |
Collapse
|
15
|
Kitabatake K, Kaji T, Tsukimoto M. ATP and ADP enhance DNA damage repair in γ-irradiated BEAS-2B human bronchial epithelial cells through activation of P2X7 and P2Y12 receptors. Toxicol Appl Pharmacol 2020; 407:115240. [PMID: 32941855 DOI: 10.1016/j.taap.2020.115240] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 09/03/2020] [Accepted: 09/10/2020] [Indexed: 10/23/2022]
Abstract
Agents that promote DNA repair may be useful as radioprotectants to minimize side effects such as radiation pneumonia caused by damage to normal cells during radiation therapy to treat lung cancer. We have reported that extracellular nucleotides and nucleosides are involved in the P2 or P1 receptor-mediated DNA damage response (DDR) after γ-irradiation. Here, we investigated the effects of ATP, UTP, GTP, ITP and their metabolites on the γH2AX/53BP1 focus formation in nuclei (a measure of γ-irradiation-induced DDR) and the survival of γ-irradiated immortalized human bronchial epithelial (BEAS-2B) cells. Fluorescence immunostaining showed that ATP and ADP increase DDR and DNA repair, and exhibit radioprotective effects as evaluated by colony formation assay. These effects of ATP or ADP were blocked by inhibitors of P2X7 or P2Y12 receptor, respectively, and by ERK1/2 inhibitor. ATP and ADP enhanced phosphorylation of ERK1/2 by suppressing MKP-1 and MKP-3 expression after γ-irradiation. These results indicate that ATP and ADP exhibit radioprotective effects by phosphorylation of ERK1/2 via activation of P2X7 and P2Y12 receptors, respectively, to promote γ-irradiation-induced DDR and DNA repair. ATP and ADP appear to be candidates for radioprotectants to reduce damage to non-cancerous cells during lung cancer radiotherapy by promoting DDR and DNA repair.
Collapse
Affiliation(s)
- Kazuki Kitabatake
- Department of Radiation Biosciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba 278-0022, Japan
| | - Toshiyuki Kaji
- Department of Environmental Health, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba 278-0022, Japan
| | - Mitsutoshi Tsukimoto
- Department of Radiation Biosciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba 278-0022, Japan.
| |
Collapse
|
16
|
Concentration-dependent effect of silymarin on concanavalin A-stimulated mouse spleen cells in vitro. EUROPEAN PHARMACEUTICAL JOURNAL 2020. [DOI: 10.2478/afpuc-2020-0003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractAims: Silymarin (SIL), a mixture of phenolic compounds, has a pleiotropic mode of action on various cell types, including immune cells. In this study, we investigated the concentration-dependent effect of SIL on proliferation of concanavalin A (CoA)-stimulated mouse spleen T lymphocytes, their viability, and secretion of IFN-g and IL-4 cytokines ex vivo in relation to gene expressions of transcription factors nuclear factor kappa B and Foxp3. In addition, metabolic activity of T cells was determined as changes in the mitochondrial membrane potential and apoptosis.Material/Methods: Isolated splenocytes were stimulated with lectin CoA and treated with SIL atthe concentrations of 5, 10, 20, and 40 μg/ml for 70 h and unstimulated cells served as the control. Cultures of splenocytes were evaluated for proliferation index following BrdU incorporation and viability of cells after trypan blue staining. Gene expressions of transcription factors and cytokines were assessed using real-time PCR, whereas ELISA test was applied to measure cytokine secretion. Mitochondrial membrane potential and apoptosis were determined by flow cytometry.Results: We demonstrated that CoA-activated mouse spleen T lymphocytes show different susceptibilities to low (£10 μg/ml) and higher (20 and 40 μg/ml) SIL concentrations. Low concentrations resulted in increased proliferation, cytokine secretion, and mitochondrial membrane potential and reduced transition of cells to apoptosis. High concentration of SIL had the opposite effect without exerting significant cytotoxicity and upregulated genes for cytokines and transcription factors on mRNA level. It is possible that individual subpopulations of T cells induced by CoA were differentially affected by the various SIL concentrations and the dose of 40 μg/ml had the profound suppressive effect. This correlated with the highest expression of Foxp3 factor, indicating that this dose stimulated preferential differentiation to Tregs lymphocytes.Conclusions: Treatment with suitable doses of SIL can provide potential benefits in the modulation of host immune functions in various diseases.
Collapse
|
17
|
Oshima N, Kume H, Umeda T, Takito H, Tsukimoto M, Hada N. Structures and Inhibitory Activities for Interleukin-2 Production of Seasonally Variable Constituents in Flower Parts of Magnolia kobus at Different Growth Stages. Chem Pharm Bull (Tokyo) 2020; 68:91-95. [DOI: 10.1248/cpb.c19-00611] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Naohiro Oshima
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
- Department of Pharmaceutical Sciences, International University of Health and Welfare
| | - Honoka Kume
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Takayoshi Umeda
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Haruki Takito
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | | | - Noriyasu Hada
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| |
Collapse
|
18
|
Targeting innate sensing in the tumor microenvironment to improve immunotherapy. Cell Mol Immunol 2019; 17:13-26. [PMID: 31844141 DOI: 10.1038/s41423-019-0341-y] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 11/24/2019] [Indexed: 12/14/2022] Open
Abstract
The innate immune sensing pathways play critical roles in the defense against pathogen infection, but their roles in cancer immunosurveillance and cancer therapies are less defined. We propose that defective innate immune sensing inside the tumor microenvironment might limit T-cell responses to immunotherapy. A recent mechanistic understanding of conventional therapies revealed that both innate immune sensing and T-cell responses are essential for optimal antitumor efficacy. T-cell-based immunotherapy, particularly immune checkpoint blockade, has achieved great success in reactivating antitumor immune responses to lead to tumor regression, but only in a small fraction of patients. Therefore, incorporating conventional therapy that can increase innate sensing and immunotherapy should lead to promising strategies for cancer patients. Here, we review the innate sensing pathways related to cancer initiation/progression and therapies, summarize the recent key findings in innate immune sensing related to conventional therapies, evaluate current combination strategies, and highlight the potential issues of combinational therapies in terms of antitumor efficacy and toxicities.
Collapse
|
19
|
Zhang Y, Zhang F, Shi S, Liu X, Cai W, Han G, Ke C, Long S, Di Z, Yin S, Li H. Immunosuppressive effects of a novel potassium channel toxin Ktx-Sp2 from Scorpiops Pocoki. Cell Biosci 2019; 9:99. [PMID: 31890149 PMCID: PMC6915869 DOI: 10.1186/s13578-019-0364-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 12/09/2019] [Indexed: 01/19/2023] Open
Abstract
Background The cDNA Library of venomous animals could provide abundant bioactive peptides coding information and is an important resource for screening bioactive peptides that target and regulate disease-related ion channels. To further explore the potential medicinal usage of the transcriptome database of Scorpiops Pocoki’s venom gland, this research identified the function of a new potassium channel toxin Ktx-Sp2, whose gene was screened from the database by sequence alignment. Results The mature peptide of Ktx-Sp2 was obtained by genetic engineering. Whole-cell patch-clamp experiment showed that Ktx-Sp2 peptide could effectively block three types of exogenous voltage-gated potassium channels—Kv1.1, Kv1.2 and Kv1.3, among which, the blocking activity for Kv1.3 was relatively high, showing selectivity to some extent. Taking Jurkat T cells as the cell model, this study found that Ktx-Sp2 peptide could also effectively block endogenous Kv1.3, significantly reduce the free calcium concentration in Jurkat T cells, inhibit the activation of Jurkat T cells and reduce the release of inflammatory cytokines IL-2, showing a strong immunosuppressant effect. Conclusions This study further proves that the transcriptome database of the Scorpiops Pocoki venom gland is an important resource for discovery of novel bioactive polypeptide coding genes. The newly screened Kv1.3 channel blocker Ktx-Sp2 expanded the range of leading compounds for the treatment of autoimmune diseases and promoted the development and application of scorpion toxin peptides in the field of biomedicine.
Collapse
Affiliation(s)
- Yubiao Zhang
- 1Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, 430060 People's Republic of China
| | - Feng Zhang
- 2School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, 430074 People's Republic of China
| | - Shujuan Shi
- 2School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, 430074 People's Republic of China
| | - Xinqiao Liu
- 2School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, 430074 People's Republic of China
| | - Weisong Cai
- 1Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, 430060 People's Republic of China
| | - Guangtao Han
- 1Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, 430060 People's Republic of China
| | - Caihua Ke
- 2School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, 430074 People's Republic of China
| | - Siru Long
- 2School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, 430074 People's Republic of China
| | - Zhiyong Di
- 3School of Life Sciences, University of Science and Technology of China, Hefei, 230027 People's Republic of China
| | - Shijin Yin
- 2School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, 430074 People's Republic of China
| | - Haohuan Li
- 1Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, 430060 People's Republic of China
| |
Collapse
|
20
|
Vemulapalli H, Albayati S, Patwa VC, Tilley DG, Tsygankov AY, Liverani E. ADP exerts P2Y 12 -dependent and P2Y 12 -independent effects on primary human T cell responses to stimulation. J Cell Commun Signal 2019; 14:111-126. [PMID: 31808055 DOI: 10.1007/s12079-019-00540-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 11/25/2019] [Indexed: 01/11/2023] Open
Abstract
Purinergic signaling plays a complex role in inflammation. Nucleotides released by T lymphocytes, endothelial cells, and platelets during inflammation induce cellular responses by binding to receptors that regulate intracellular signaling pathways. Previous studies have found that purinergic signaling can have both proinflammatory and anti-inflammatory effects, but the roles of specific pathways in specific cell types are poorly understood. We investigated the role of the P2Y12 signaling pathway in the activation of T lymphocytes in vitro. We isolated peripheral blood mononuclear cells (PBMCs) from healthy donors and pretreated them with ADP (a P2Y12 agonist), AR-C69931MX (a P2Y12 antagonist), or both. We then stimulated PBMC using phytohemagglutinin (PHA) or anti-CD3/CD28 antibodies. We found that ADP affects T cell responses in term of cell activity and receptor expression through both P2Y12-dependent and P2Y12-independent pathways and other responses (cytokine secretion) primarily through P2Y12 -independent pathways. The ADP-mediated effect changed over time and was stimulus-specific.
Collapse
Affiliation(s)
- Harika Vemulapalli
- Sol Sherry Thrombosis Research Center, Lewis Katz School of Medicine at Temple University, 3420 North Broad Street, Philadelphia, PA, 19140, USA
| | - Samara Albayati
- Sol Sherry Thrombosis Research Center, Lewis Katz School of Medicine at Temple University, 3420 North Broad Street, Philadelphia, PA, 19140, USA
| | - Viren C Patwa
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, PA, USA
| | - Douglas G Tilley
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, PA, USA
| | - Alexander Y Tsygankov
- Sol Sherry Thrombosis Research Center, Lewis Katz School of Medicine at Temple University, 3420 North Broad Street, Philadelphia, PA, 19140, USA.,Department of Microbiology and Immunology, Temple University School of Medicine, Temple University Hospital, Philadelphia, PA, USA
| | - Elisabetta Liverani
- Sol Sherry Thrombosis Research Center, Lewis Katz School of Medicine at Temple University, 3420 North Broad Street, Philadelphia, PA, 19140, USA.
| |
Collapse
|
21
|
Wang H, Feng X, Han P, Lei Y, Xia Y, Tian D, Yan W. The JAK inhibitor tofacitinib ameliorates immune‑mediated liver injury in mice. Mol Med Rep 2019; 20:4883-4892. [PMID: 31638166 PMCID: PMC6854585 DOI: 10.3892/mmr.2019.10750] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 08/08/2019] [Indexed: 12/18/2022] Open
Abstract
The prevalence of immune-mediated liver diseases such as autoimmune liver disease or viral hepatitis has increased in recent years, and the side effects of pre-existing treatments are a worldwide problem. Regulatory T cells (Tregs) and T helper 17 (Th17) cells play important roles in the development of immune-mediated hepatitis and may serve as potential therapeutic targets. Tofacitinib, a new Janus kinase (JAK) inhibitor, is under investigation for the treatment of rheumatoid arthritis; it is also helpful in treating ulcerative colitis and psoriasis. The roles of tofacitinib were investigated in conferring protection against immune-mediated liver injury in mice. T cell-mediated hepatitis was induced by concanavalin A (ConA). The mice in the treatment groups were administered with tofacitinib intragastrically before the ConA injection. Histopathological examination was performed by hematoxylin and eosin (H&E) staining, and the serum transaminase and inflammatory cytokine levels were determined using an automatic biochemistry analysis apparatus or cytometric bead array (CBA) kits. Flow cytometric analysis was used to detect Tregs and Th17 cells. Tofacitinib significantly decreased the hepatic injury induced by ConA and prominently decreased the liver transaminase level. The secretion of several anti-inflammatory cytokines such as interleukin (IL)-10 was upregulated in mice from the treatment group, compared to that in mice treated with ConA alone, while the expression of interferon-γ (IFN-γ) and tumor necrosis factor-α (TNF-α) decreased. Tofacitinib treatment increased the number of Tregs and reduced the number of Th17 cells. Furthermore, tofacitinib could relieve liver fibrosis under conditions of autoimmune hepatitis (AIH). The present results indicated that tofacitinib improved immune-mediated hepatitis and restored the impaired Treg/Th17 cell ratio, which suggests that it may serve as a novel treatment approach for immune-mediated liver diseases.
Collapse
Affiliation(s)
- Han Wang
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Xinxia Feng
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Ping Han
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Yu Lei
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Yujia Xia
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Dean Tian
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Wei Yan
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| |
Collapse
|
22
|
Sueyoshi K, Ledderose C, Shen Y, Lee AH, Shapiro NI, Junger WG. Lipopolysaccharide suppresses T cells by generating extracellular ATP that impairs their mitochondrial function via P2Y11 receptors. J Biol Chem 2019; 294:6283-6293. [PMID: 30787105 DOI: 10.1074/jbc.ra118.007188] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/10/2019] [Indexed: 12/20/2022] Open
Abstract
T cell suppression contributes to immune dysfunction in sepsis. However, the underlying mechanisms are not well-defined. Here, we show that exposure of human peripheral blood mononuclear cells to bacterial lipopolysaccharide (LPS) can rapidly and dose-dependently suppress interleukin-2 (IL-2) production and T cell proliferation. We also report that these effects depend on monocytes. LPS did not prevent the interaction of monocytes with T cells, nor did it induce programmed cell death protein 1 (PD-1) signaling that causes T cell suppression. Instead, we found that LPS stimulation of monocytes led to the accumulation of extracellular ATP that impaired mitochondrial function, cell migration, IL-2 production, and T cell proliferation. Mechanistically, LPS-induced ATP accumulation exerted these suppressive effects on T cells by activating the purinergic receptor P2Y11 on the cell surface of T cells. T cell functions could be partially restored by enzymatic removal of extracellular ATP or pharmacological blocking of P2Y11 receptors. Plasma samples obtained from sepsis patients had similar suppressive effects on T cells from healthy subjects. Our findings suggest that LPS and ATP accumulation in the circulation of sepsis patients suppresses T cells by promoting inappropriate P2Y11 receptor stimulation that impairs T cell metabolism and functions. We conclude that inhibition of LPS-induced ATP release, removal of excessive extracellular ATP, or P2Y11 receptor antagonists may be potential therapeutic strategies to prevent T cell suppression and restore host immune function in sepsis.
Collapse
Affiliation(s)
| | | | | | | | - Nathan I Shapiro
- Emergency Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215 and
| | - Wolfgang G Junger
- From the Departments of Surgery and .,the Ludwig Boltzmann Institute for Traumatology, Vienna A-1200, Austria
| |
Collapse
|
23
|
Wang X, Kong B, He B, Wei L, Zhu J, Jin Y, Shan Y, Wang W, Pan C, Fu Z. 8:2 Fluorotelomer alcohol causes immunotoxicity and liver injury in adult male C57BL/6 mice. ENVIRONMENTAL TOXICOLOGY 2019; 34:141-149. [PMID: 30536526 DOI: 10.1002/tox.22668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 09/24/2018] [Accepted: 09/25/2018] [Indexed: 06/09/2023]
Abstract
8:2 Fluorotelomer alcohol (8:2 FTOH) is widely used in houseware and industrial goods and is ubiquitous in the surrounding environment. 8:2 FTOH has been linked to hepatoxicity, nephrotoxicity, and reproductive toxicity, as well as endocrine-disrupting effects. However, as of yet, the research regarding immunotoxicity of 8:2 FTOH remains largely limited. In the present study, adult male C57BL/6 mice were administered with 10, 30, and 100 mg/kg/d 8:2 FTOH by gavage for 28 days to investigate its immunotoxicity in vivo. The results showed that exposure to 8:2 FTOH caused increases in liver weight and histological changes in the liver, including vacuolation, cell swelling, immune cell infiltration, karyopyknosis and nuclear swelling. No histological change in either the spleen or the thymus was observed after administration of 8:2 FTOH. In addition, exposure to 8:2 FTOH reduced the concentration of IL-1β in serum, and mRNA levels of IL-1β, IL-6, and TNF-α in both the thymus and spleen. CXCL-1 mRNA expression was downregulated in both the liver and thymus after 8:2 FTOH administration, while only IL-1β mRNA expression was upregulated in the liver. Moreover, the exposure of primary cultured splenocytes to 8:2 FTOH inhibited the ConA-stimulated proliferation of splenocytes at concentrations of 30 and 100 μM, and the LPS-stimulated proliferation of splenocytes at 100 μM. Furthermore, 8:2 FTOH inhibited the level of secreted IFN-γ in ConA-stimulated splenocytes. The results obtained in the study demonstrated that 8:2 FTOH posed potential immunotoxicity and liver injury in mice. Our findings will provide novel data for the health risk assessment of 8:2 FTOH.
Collapse
Affiliation(s)
- Xia Wang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Baida Kong
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Bingnan He
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Lai Wei
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Jianbo Zhu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Yuanxiang Jin
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Yudong Shan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Weitao Wang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Chunqiang Pan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Zhengwei Fu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| |
Collapse
|
24
|
Kume H, Tsukimoto M. TRPM8 channel inhibitor AMTB suppresses murine T-cell activation induced by T-cell receptor stimulation, concanavalin A, or external antigen re-stimulation. Biochem Biophys Res Commun 2019; 509:918-924. [PMID: 30642628 DOI: 10.1016/j.bbrc.2019.01.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 01/02/2019] [Indexed: 12/15/2022]
Abstract
Transient receptor potential (TRP) channels are a family of non-selective cation channels that are functionally expressed in various organs and cells. Among them, transient receptor potential vanilloid (TRPV) 1 and TRPV4 channels are expressed in T cells, where they serve as Ca2+ channels for T-cell receptor signaling [Bertin et al., 2014, Majhi et al., 2015]. Here, we show that not only TRPV1 and TRPV4 channel inhibitors, but also a transient receptor potential melastatin (TRPM) 8 channel inhibitor can suppress murine T-cell activation. Mouse splenic lymphocytes pretreated with N-(3-aminopropyl)-2-[(3-methylphenyl)methoxy]-N-(2-thienylmethyl)benzamide hydrochloride (AMTB), a TRPM8 channel-selective inhibitor, showed significantly reduced IL-2 and IL-6 release from T cells after stimulation with anti-CD3ε/anti-CD28 antibodies or concanavalin A. AMTB also suppressed IL-2 mRNA expression and activation of extracellular signal-regulated kinase 1/2, which is involved in IL-2 production. Further, the increase of CD25 (IL-2 receptor alpha chain) expression after T-cell activation was suppressed by AMTB. TRPM8 channel was expressed in CD4+ T cells isolated from splenocytes, and we confirmed that the release of IL-2 from isolated CD4+ T cells was significantly suppressed by AMTB. In vitro re-stimulation of splenocytes from external antigen-immunized mice with the same antigen induced IL-2 and IL-6 production, which was significantly suppressed by AMTB. Thus, the TRPM8 channel inhibitor AMTB suppresses T-cell activation induced by various stimulants.
Collapse
Affiliation(s)
- Honoka Kume
- Department of Radiation Biosciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba, Japan
| | - Mitsutoshi Tsukimoto
- Department of Radiation Biosciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba, Japan.
| |
Collapse
|
25
|
Berberis lycium Royle fruit extract mitigates oxi-inflammatory stress by suppressing NF-κB/MAPK signalling cascade in activated macrophages and Treg proliferation in splenic lymphocytes. Inflammopharmacology 2018; 28:1053-1072. [DOI: 10.1007/s10787-018-0548-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 11/29/2018] [Indexed: 02/06/2023]
|
26
|
Graner MW. Extracellular vesicles in cancer immune responses: roles of purinergic receptors. Semin Immunopathol 2018; 40:465-475. [PMID: 30209547 DOI: 10.1007/s00281-018-0706-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 09/04/2018] [Indexed: 12/24/2022]
Abstract
Extracellular vesicles (EVs) are nano- to micro-scale membrane-enclosed vesicles that are released from presumably all cell types. Tumor cells and immune cells are prodigious generators of EVs often with competing phenotypes in terms of immune suppression versus immune stimulation. Purinergic receptors, proteins that bind diverse purine nucleotides and nucleosides (ATP, ADP, AMP, adenosine), are widely expressed across tissues and cell types, and are prominent players in immune and tumor cell nucleotide metabolism. The effects of purinergic receptor stimulation or agonism tend to produce inflammatory responses that may aid immune stimulation but may also provoke various immune suppression mechanisms, particularly in the tumor microenvironment. EVs released by cells following receptor stimulation are frequently pro-inflammatory, but often also pro-thrombolytic; these EVs may generate an environment that favors tumor progression at the cost of an effective immune response. Purinergic signaling pathways are becoming more recognized as valuable targets in various therapeutic scenarios, including cancer. It is possible that some of those clinically relevant compounds might also impact EV secretion and/or phenotype, which would hopefully capitalize on the immune stimulatory properties of purinergic signaling while minimizing the immune suppressive consequences. This review covers a relatively understudied area in EV biology, but even so, focuses almost exclusively on the purinergic receptors in a very limited capacity. There is much more to evaluate and incorporate into our understanding of extracellular nucleotides in EV biology, and we hope this work prompts further discovery.
Collapse
Affiliation(s)
- Michael W Graner
- Department of Neurosurgery, University of Colorado Denver, Anschutz Medical Campus, RC2, 12700 E 19th Ave, Room 5125, Aurora, CO, 80045, USA.
| |
Collapse
|
27
|
Shinohara Y, Tsukimoto M. Guanine and inosine nucleotides/nucleosides suppress murine T cell activation. Biochem Biophys Res Commun 2018. [PMID: 29524424 DOI: 10.1016/j.bbrc.2018.03.055] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Damaged tissues and cells release intracellular purine nucleotides, which serve as intercellular signaling factors. We previously showed that exogenously added adenine nucleotide (250 μM ATP) suppressed the activation of murine splenic T lymphocytes. Here, we examined the effects of other purine nucleotides/nucleosides on mouse T cell activation. First, we found that pretreatment of mouse spleen T cells with 250 μM GTP, GDP, GMP, guanosine, ITP, IDP, IMP or inosine significantly reduced the release of stimulus-inducible cytokine IL-2. This suppression of IL-2 release was not caused by induction of cell death. Further studies with GTP, ITP, guanosine and inosine showed that pretreatment with these nucleotides/nucleosides also suppressed release of IL-6. However, these nucleotides/nucleosides did not suppress stimulus-induced phosphorylation of ERK1/2, suggesting that the suppression of the release of inflammatory cytokines does not involve inhibition of ERK1/2 signaling. In contrast to ATP pretreatment at the same concentration, guanine or inosine nucleotides/nucleosides did not attenuate the expression of CD25. Our findings indicate that exogenous guanine or inosine nucleotides/nucleosides can suppress inflammatory cytokine release from T cells, and may be promising candidates for use as supplementary agents in the treatment of T cell-mediated immune diseases.
Collapse
Affiliation(s)
- Yuria Shinohara
- Department of Radiation Biosciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba, Japan
| | - Mitsutoshi Tsukimoto
- Department of Radiation Biosciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba, Japan.
| |
Collapse
|