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https://www.readbyqxmd.com/read/29331869/dietary-naringenin-supplementation-attenuates-experimental-autoimmune-encephalomyelitis-by-modulating-autoimmune-inflammatory-responses-in-mice
#1
Junpeng Wang, Ying Qi, Xinli Niu, Hua Tang, Simin Nikbin Meydani, Dayong Wu
Autoimmune disease is highly prevalent in humans. Since conventional therapies have limited efficacy and often come with significant side effects, nutrition may provide an alternative and complementary approach to improving autoimmune disorders. Naringenin, a flavonoid found in citrus fruits, has been shown to have anti-inflammatory and antioxidant properties. Using the experimental autoimmune encephalomyelitis (EAE), a rodent model of human multiple sclerosis, we determined the effect of dietary naringenin (0...
December 11, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29331794/melatonin-suppresses-eosinophils-and-th17-cells-in-hamsters-treated-with-a-combination-of-human-liver-fluke-infection-and-a-chemical-carcinogen
#2
Wachanan Wongsena, Lakhanawan Charoensuk, Rungtiwa Dangtakot, Porntip Pinlaor, Kitti Intuyod, Somchai Pinlaor
BACKGROUND: The combination of Opisthorchis viverrini (OV) infection and chemical carcinogen induces cholangiocarcinoma (CCA) in hamsters via inflammation-mediated mechanisms. Thus, suppression of inflammatory cells at the initial stages of CCA development would be of benefit. We aimed to investigate whether IL-17-producing CD4+ T cells (Th17) and CD4+ Foxp3+ T cells (Treg) are involved in the early stages of CCA genesis and can be targeted for suppression by melatonin. METHODS: Inflammation, an initial stage of CCA development, was induced in hamsters by a combination of O...
July 26, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29331497/dietary-antioxidant-micronutrients-alter-mucosal-inflammatory-risk-in-a-murine-model-of-genetic-and-microbial-susceptibility
#3
Joseph F Pierre, Reinhard Hinterleitner, Romain Bouziat, Nathan A Hubert, Vanessa Leone, Jun Miyoshi, Bana Jabri, Eugene B Chang
Inflammatory bowel diseases (IBD) are caused by the convergence of microbial, environmental, and genetic factors. Diet significantly alters these interactions by affecting both the host and microbiome. Using a mucosal inflammatory model that resembles the human condition of ileal pouchitis, we investigated the effects of Control (CONT) or Antioxidant (AOX) diet, containing pharmacologically relevant levels of 4 micronutrients, on disease risk in wild-type and IL-10-/- animals following surgical self-filling (SF) ileal blind loop placement...
December 10, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29331419/the-therapeutic-potential-of-human-adipose-derived-mesenchymal-stem-cells-producing-cxcl10-in-a-mouse-melanoma-lung-metastasis-model
#4
Hamed Mirzaei, Hossein Salehi, Reza Kazemi Oskuee, Ali Mohammadpour, Hamid Reza Mirzaei, Mohammad Reza Sharifi, Reza Salarinia, Hossein Yousofi Darani, Mojgan Mokhtari, Aria Masoudifar, Amirhossein Sahebkar, Rasoul Salehi, Mahmoud Reza Jaafari
Interferon γ-induced protein 10 kDa (IP-10) is a potent chemoattractant and has been suggested to enhance antitumor activity and mediate tumor regression through multiple mechanisms of action. Multiple lines of evidence have indicated that genetically-modified adult stem cells represent a potential source for cell-based cancer therapy. In the current study, we assessed therapeutic potential of human adipose derived mesenchymal stem cells (hADSC) genetically-modified to express IP-10 for the treatment of lung metastasis in an immunocompetent mouse model of metastatic melanoma...
January 10, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29330859/differential-effects-of-phototherapy-adalimumab-and-betamethasone-calcipotriol-on-effector-and-regulatory-t-cells-in-psoriasis
#5
I S Kotb, B J Lewis, R N Barker, A D Ormerod
BACKGROUND: Psoriasis is a chronic T cell-mediated skin disease with marked social and economic burdens. Current treatments are unsatisfactory, with unpredictable remission times and incompletely understood modes of action. Recent advances in our understanding of the pathogenesis of psoriasis identify the imbalance between CD4+ T effector cells, particularly the T helper (Th) 17 subset, and regulatory T cells (Treg) as key to the development of psoriatic lesions, and therefore a novel therapeutic target...
January 12, 2018: British Journal of Dermatology
https://www.readbyqxmd.com/read/29327244/antibody-based-delivery-of-tumor-necrosis-factor-l19-tnf%C3%AE-and-interleukin-2-l19-il2-to-tumor-associated-blood-vessels-has-potent-immunological-and-anticancer-activity-in-the-syngeneic-j558l-balb-c-myeloma-model
#6
Hans D Menssen, Ulf Harnack, Ulrike Erben, Dario Neri, Burkhard Hirsch, Horst Dürkop
PURPOSE: To analyze the impact of TNFα or IL2 on human lymphocytes in vitro and the anti-tumor and immune-modifying effects of L19-IL2 and L19-TNFα on subcutaneously growing J558L myeloma in immunocompetent mice. METHODS: PBMCs from three healthy volunteers were incubated with IL2, TNFα, or with IL2 plus addition of TNFα (final 20 h). BALB/c J558L mice with subcutaneous tumors were treated with intravenous L19-TNFα plus L19-IL2, or controls. Tumor growth and intra- and peri-tumoral tissues were analyzed for micro-vessel density, necrosis, immune cell composition, and PD1 or PD-L1 expressing cells...
January 11, 2018: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/29327109/a-novel-biologic-platform-elicits-profound-t-cell-costimulatory-activity-and-antitumor-immunity-in-mice
#7
Joseph M Ryan, Payal Mittal, Antoine Menoret, Julia Svedova, Jeffrey S Wasser, Adam J Adler, Anthony T Vella
Combination immunotherapies utilizing complementary modalities that target distinct tumor attributes or immunosuppressive mechanisms, or engage different arms of the antitumor immune response, can elicit greater therapeutic efficacy than the component monotherapies. Increasing the number of agents included in a therapeutic cocktail can further increase efficacy, however, this approach poses numerous challenges for clinical translation. Here, a novel platform to simplify combination immunotherapy by covalently linking immunotherapeutic agonists to the costimulatory receptors CD134 and CD137 into a single heterodimeric drug, "OrthomAb", is shown...
January 11, 2018: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/29326066/novel-everolimus-loaded-nanocarriers-for-topical-treatment-of-murine-experimental-autoimmune-uveoretinitis-eau
#8
Maren Kasper, Doris Gabriel, Michael Möller, Dirk Bauer, Lena Wildschütz, Herve Courthion, Michael R R Böhm, Martin Busch, Karin Loser, Solon Thanos, Robert Gurny, Arnd Heiligenhaus
In the present study, therapeutic effect of topically applied everolimus (EV)-loaded methoxy-poly(ethylene-glycol)-hexyl substituted poly (lactic acid) (mPEGhexPLA) nanocarriers on experimental autoimmune uveitis (EAU) were investigated. EAU was induced in B10.RIII mice via immunization with human interphotoreceptor retinoid-binding protein peptide 161-180 (hIRBPp161-180) in complete Freund's adjuvant. Everolimus-loaded mPEGhexPLA (EV/mPEGhexPLA) nanocarriers were prepared by using a solvent evaporation method...
January 8, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29324739/mansonella-perstans-microfilaremic-individuals-are-characterized-by-enhanced-type-2-helper-t-and-regulatory-t-and-b-cell-subsets-and-dampened-systemic-innate-and-adaptive-immune-responses
#9
Manuel Ritter, Winston Patrick Chounna Ndongmo, Abdel Jelil Njouendou, Nora Nganyewo Nghochuzie, Lucy Cho Nchang, Dizzle Bita Tayong, Kathrin Arndts, Norman Nausch, Marc Jacobsen, Samuel Wanji, Laura E Layland, Achim Hoerauf
The filarial nematode Mansonella perstans is endemic throughout Africa, northern South America and the Caribbean. Interestingly, M. perstans-infected individuals present no distinct clinical picture associated with certain pathology. Due to its relatively silent nature, research on this tropical disease has been neglected, especially M. perstans-driven immune responses. A hindrance in obtaining data on M. perstans-specific responses has been the inability to obtain adult worms since their habitats in serous cavities are difficult to access...
January 11, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29324358/regulatory-cd4-t-cells-inhibit-hiv-1-expression-of-other-cd4-t-cell-subsets-via-interactions-with-cell-surface-regulatory-proteins
#10
Mingce Zhang, Tanya O Robinson, Alexandra Duverger, Olaf Kutsch, Sonya L Heath, Randy Q Cron
During chronic HIV-1 infection, regulatory CD4 T cells (Tregs) frequently represent the largest subpopulation of CD4 T cell subsets, implying relative resistant to HIV-1. When HIV-1 infection of CD4 T cells was explored in vitro and ex vivo from patient samples, Tregs possessed lower levels of HIV-1 DNA and RNA in comparison with conventional effector and memory CD4 T cells. Moreover, Tregs suppressed HIV-1 expression in other CD4 T cells in an in vitro co-culture system. This suppression was mediated in part via multiple inhibitory surface proteins expressed on Tregs...
January 8, 2018: Virology
https://www.readbyqxmd.com/read/29324063/granulomatous-lung-inflammation-is-nanoparticle-type-dependent
#11
Yves Pacheco, Marine Ponchon, Serge Lebecque, Alain Calender, Jean François Bernaudin, Dominique Valeyre, Marc Iglarz, Daniel S Strasser, Rolf Studer, Diego Freti, Toufiq Renno, Abederrazzaq Bentaher
BACKGROUND: Nanoparticles are increasingly suspected as a strong etiologic factor of granuloma formation. AIM OF THE STUDY: The aim of our study was to compare lung inflammatory response and histology changes following exposure of mice to two widely used nanoparticles: carbon nanotubes (MWCNT) and cadmium-based nanoparticles (QDOT705) in an attempt to better our understanding of granulomatous inflammation. MATERIALS AND METHODS: Various groups of mice were included: control mice and mice that were intranasally instilled with QDOT or MWCNT...
January 11, 2018: Experimental Lung Research
https://www.readbyqxmd.com/read/29323337/regulatory-t-cells-as-a-new-therapeutic-target-for-atherosclerosis
#12
REVIEW
Han-Xiao Ou, Bing-Bing Guo, Qi Liu, Yu-Kun Li, Zhen Yang, Wen-Jie Feng, Zhong-Cheng Mo
Atherosclerosis is an autoimmune disease caused by self- and non-self-antigens contributing to excessive activation of T and B cell immune responses. These responses further aggravate vascular inflammation and promote progression of atherosclerosis and vulnerability to plaques via releasing pro-inflammatory cytokines. Regulatory T cells (Tregs) as the major immunoregulatory cells, in particular, induce and maintain immune homeostasis and tolerance by suppressing the immune responses of various cells such as T and B cells, natural killer (NK) cells, monocytes, and dendritic cells (DCs), as well as by secreting inhibitory cytokines interleukin (IL)-10, IL-35 and transcription growth factor β (TGF-β) in both physiological and pathological states...
January 11, 2018: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29323140/loss-of-a20-in-bm-mscs-regulates-the-th17-treg-balance-in-rheumatoid-arthritis
#13
Zhuan Feng, Yue Zhai, Zhaohui Zheng, Lijie Yang, Xing Luo, Xiwen Dong, Qing Han, Jin Jin, Zhi-Nan Chen, Ping Zhu
Mesenchymal stem cells (MSCs) are multi-potent cells that are self-renewable and possess the potential to differentiate into multiple lineages. Several studies demonstrated that MSCs could regulate a Th17/Treg balance and could be a potential therapeutic target for Rheumatoid Arthritis (RA). A20 is highly expressed in many cell types after the stimulation of TNF-α, where it may inhibit pro-inflammatory cytokine secretion. However, the expression of A20 in BM-MSCs in RA is not fully understood. In our study, we found that A20 was decreased in RA patients' bone marrow MSCs (BM-MSCs), and with more IL-6 secretion, the balance of Th17/Treg was broken...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29322606/association-of-tumour-infiltrating-regulatory-t-cells-with-adverse-outcomes-in-dogs-with-malignant-tumours
#14
K Sakai, S Maeda, Y Yamada, J K Chambers, K Uchida, H Nakayama, T Yonezawa, N Matsuki
Regulatory T cells (Tregs) infiltrate into a variety of tumour tissues and associate with poor prognosis in humans. However, data on association of Treg infiltration with prognosis is limited in canine tumours. The purpose of this study was to examine the number of tumour-infiltrating Tregs and its association with overall survival (OS) in dogs with malignant tumours. The following 168 canine tumours were included: 37 oral malignant melanomas (OMMs); 14 oral squamous cell carcinomas (OSCCs); 16 pulmonary adenocarcinomas (PAs); 37 mammary carcinomas (MCs); 36 mast cell tumours (MCTs) and 28 hepatocellular carcinomas (HCCs)...
January 11, 2018: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/29321652/innate-ifn-%C3%AE-ameliorates-experimental-autoimmune-encephalomyelitis-and-promotes-myeloid-expansion-and-pdl-1-expression
#15
Madeleine P J White, Gill Webster, Faith Leonard, Anne Camille La Flamme
The innate immune system plays a central role in the immune-mediated pathology of multiple sclerosis, and is a therapeutic target for progressive disease. Recently, it has been demonstrated that MIS416, a novel immunomodulatory microparticle that activates NOD-2 and TLR-9-signaling, has disease-modifying activity in multiple sclerosis models. This activity is dependent on innate IFN-γ; however, the precise immune regulatory mechanisms amplified by MIS416 have not previously been determined. Using the experimental autoimmune encephalomyelitis model, MIS416 treatment was associated with IFN-γ-dependant expansion of Treg number and increased suppressive function; however, these cells did not account for disease reduction...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29321275/cd40-mediates-maturation-of-thymic-dendritic-cells-driven-by-self-reactive-cd4-thymocytes-and-supports-development-of-natural-regulatory-t-cells
#16
Jaehak Oh, Nan Wu, Andrea J Barczak, Rebecca Barbeau, David J Erle, Jeoung-Sook Shin
Thymic dendritic cells (tDCs) play an important role in central tolerance by eliminating self-reactive thymocytes or differentiating them to regulatory T (Treg) cells. However, the molecular and cellular mechanisms underlying these functions are not completely understood. We found that mouse tDCs undergo maturation following cognate interaction with self-reactive CD4+ thymocytes and that this maturation is dependent on CD40 signaling. Ablation of CD40 expression in tDCs resulted in a significant reduction in the number of Treg cells in association with a significant reduction in the number of mature tDCs...
January 10, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29319882/oral-myeloid-cells-uptake-allergoids-coupled-to-mannan-driving-th1-treg-responses-upon-sublingual-delivery-in-mice
#17
Irene Soria, Juan López-Relaño, Marcos Viñuela, José-Ignacio Tudela, Alba Angelina, Cristina Benito-Villalvilla, Carmen M Díez-Rivero, Bárbara Cases, Ana I Manzano, Enrique Fernández-Caldas, Miguel Casanovas, Oscar Palomares, José L Subiza
BACKGROUND: Polymerized allergoids coupled to nonoxidized mannan (PM-allergoids) may represent novel vaccines targeting dendritic cells (DCs). PM-allergoids are better captured by DCs than native allergens and favor Th1/Treg cell responses upon subcutaneous injection. Herein we have studied in mice the in vivo immunogenicity of PM-allergoids administered sublingually in comparison to native allergens. METHODS: Three immunization protocols (4-8 weeks long) were used in Balb/c mice...
January 10, 2018: Allergy
https://www.readbyqxmd.com/read/29319881/systemic-il-2-anti-il-2ab-complex-combined-with-sublingual-immunotherapy-suppresses-experimental-food-allergy-in-mice-through-induction-of-mucosal-regulatory-t-cells
#18
Paola L Smaldini, Fernando Trejo, José L Cohen, Eliane Piaggio, Guillermo H Docena
Therapeutic tolerance restoration has been proven to modify food allergy in patients and animal models and although sublingual immunotherapy (SLIT) has showed promise, combined therapy may be necessary to achieve a strong and long-term tolerance. In this work, we combined SLIT with systemic administration of IL-2 associated with an anti-IL-2 monoclonal antibody (IL-2/anti-IL-2Ab complex or IL-2C) to reverse the IgE-mediated experimental allergy. Balb/c mice were sensitized with cholera toxin and milk proteins and orally challenged with allergen to elicit hypersensitivity reactions...
January 10, 2018: Allergy
https://www.readbyqxmd.com/read/29319621/selective-cd28-inhibition-modulates-alloimmunity-and-cardiac-allograft-vasculopathy-in-anti-cd154-treated-monkeys
#19
Tianshu Zhang, Agnes M Azimzadeh, Wenji Sun, Natalie A O'Neill, Evelyn Sievert, Emily Bergbower, Gheorghe Braileanu, Lars Burdorf, Xiangfei Cheng, Thomas Monahan, Siamak Dahi, Donald Harris, Elana Rybak, Emily Welty, Anthony Kronfli, Chris Avon, Richard N Pierson
BACKGROUND: Selective CD28 inhibition is actively pursued as an alternative to B7 blockade using CTLA4-Ig based on the hypothesis that the checkpoint immune regulators CTLA-4 and PD-L1 will induce tolerogenic immune signals. We previously showed that blocking CD28 using a monovalent nonactivating reagent (single chain anti-CD28 Fv fragment linked to alpha-1 anti-trypsin: sc28AT) synergizes with calcineurin inhibitors in nonhuman primate (NHP) kidney and heart transplantation. Here, we explored the efficacy of combining a 3-week 'induction" sc28AT treatment with prolonged CD154 blockade...
January 10, 2018: Transplantation
https://www.readbyqxmd.com/read/29317916/exposure-to-no2-co-and-pm2-5-is-linked-to-regional-dna-methylation-differences-in-asthma
#20
Mary Prunicki, Laurel Stell, Deendayal Dinakarpandian, Mariangels de Planell-Saguer, Richard W Lucas, S Katharine Hammond, John R Balmes, Xiaoying Zhou, Tara Paglino, Chiara Sabatti, Rachel L Miller, Kari C Nadeau
Background: DNA methylation of CpG sites on genetic loci has been linked to increased risk of asthma in children exposed to elevated ambient air pollutants (AAPs). Further identification of specific CpG sites and the pollutants that are associated with methylation of these CpG sites in immune cells could impact our understanding of asthma pathophysiology. In this study, we sought to identify some CpG sites in specific genes that could be associated with asthma regulation (Foxp3 and IL10) and to identify the different AAPs for which exposure prior to the blood draw is linked to methylation levels at these sites...
2018: Clinical Epigenetics
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