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Interleukin-15

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https://www.readbyqxmd.com/read/28181907/the-role-of-interleukin-15-in-neoplasia
#1
Małgorzata Chłopek, Artur Kowalik, Stanisław Góźdź, Katarzyna Koziak
Interleukin 15 is a pleiotropic cytokine of the four α helix bundle family. Binding to a heterotrimeric receptor complex, which consists of a unique, high affinity IL‑15Rα‑chain and IL-2/IL-15Rβ and IL‑2Rγ chains, IL‑15 activates signaling pathways leading to activation and proliferation of T and B cells, as well as natural killer cells. At the same time, IL‑15 protects effector cells from T regulatory cells and does not induce immune tolerance. The significant regulatory action of IL‑15 on the immune system provides new opportunities for development of anti‑cancer therapies...
January 10, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28147449/exercise-effects-on-perivascular-adipose-tissue-endocrine-and-paracrine-determinants-of-vascular-function
#2
REVIEW
B C S Boa, J S Yudkin, V W M van Hinsbergh, E Bouskela, E C Eringa
Obesity is a global epidemic, accompanied by increased risk of type 2 diabetes and cardiovascular disease. Adipose tissue hypertrophy is associated with adipose tissue inflammation, which alters secretion of adipose tissue-derived bioactive products, known as adipokines. Adipokines determine vessel wall properties such as smooth muscle tone and vessel wall inflammation. Exercise is a mainstay of prevention of chronic, non-communicable diseases, type 2 diabetes and cardiovascular disease in particular. Aside from reducing adipose tissue mass, exercise has been shown to reduce inflammatory activity in this tissue...
February 1, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28110119/interleukin-15-activates-akt-to-protect-astrocytes-from-oxygen-glucose-deprivation-induced-cell-death
#3
Gilbert Aaron Lee, Yein-Gei Lai, Ray-Jade Chen, Nan-Shih Liao
Astrocytes play a pivotal role in neuronal survival under the condition of post-ischemic brain inflammation, but the relevant astrocyte-derived mediators of ischemic brain injury remain to be defined. IL-15 supports survival of multiple lymphocyte lineages in the peripheral immune system, but the role of IL-15 in inflammatory disease of the central nervous system is not well defined. Recent research has shown an increase of IL-15-expressing astrocytes in the ischemic brain. Since astrocytes promote neuron survival under cerebral ischemia by buffering excess extracellular glutamate and producing growth factors, recovery of astrocyte function could be of benefit for stroke therapy...
January 18, 2017: Cytokine
https://www.readbyqxmd.com/read/28099143/desirable-cytolytic-immune-effector-cell-recruitment-by-interleukin-15-dendritic-cells
#4
Heleen H Van Acker, Ottavio Beretta, Sébastien Anguille, Lien De Caluwé, Angela Papagna, Johan M Van den Bergh, Yannick Willemen, Herman Goossens, Zwi N Berneman, Viggo F Van Tendeloo, Evelien L Smits, Maria Foti, Eva Lion
Success of dendritic cell (DC) therapy in treating malignancies is depending on the DC capacity to attract immune effector cells, considering their reciprocal crosstalk is partially regulated by cell-contact-dependent mechanisms. Although critical for therapeutic efficacy, immune cell recruitment is a largely overlooked aspect regarding optimization of DC vaccination. In this paper we have made a head-to-head comparison of interleukin (IL)-15-cultured DCs and conventional IL-4-cultured DCs with regard to their proficiency in the recruitment of (innate) immune effector cells...
January 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28093832/il-15-deficient-mice-develop-enhanced-allergic-responses-to-airway-allergen-exposure
#5
Clinton B Mathias, Craig M Schramm, Linda A Guernsey, Carol A Wu, Stephanie H Polukort, Jeffrey Rovatti, Jennifer Ser-Dolansky, Eric Secor, Sallie S Schneider, Roger S Thrall, Hector L Aguila
BACKGROUND: Interleukin-15 is a pleiotropic cytokine that is critical for the development and survival of multiple hematopoietic lineages. Mice lacking IL-15 have selective defects in populations of several pro-allergic immune cells including natural killer (NK) cells, NKT cells, and memory CD8(+) T cells. We therefore hypothesized that IL-15(-/-) mice will have reduced inflammatory responses during the development of allergic airway disease (AAD). OBJECTIVE: To determine whether IL-15(-/-) mice have attenuated allergic responses in a mouse model of AAD...
January 17, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28031340/il-15-enables-septic-shock-by-maintaining-nk-cell-integrity-and-function
#6
Yin Guo, Liming Luan, Naeem K Patil, Jingbin Wang, Julia K Bohannon, Whitney Rabacal, Benjamin A Fensterheim, Antonio Hernandez, Edward R Sherwood
Interleukin 15 is essential for the development and differentiation of NK and memory CD8(+) (mCD8(+)) T cells. Our laboratory previously showed that NK and CD8(+) T lymphocytes facilitate the pathobiology of septic shock. However, factors that regulate NK and CD8(+) T lymphocyte functions during sepsis are not well characterized. We hypothesized that IL-15 promotes the pathogenesis of sepsis by maintaining NK and mCD8(+) T cell integrity. To test our hypothesis, the pathogenesis of sepsis was assessed in IL-15-deficient (IL-15 knockout, KO) mice...
February 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28011147/interleukin-15-is-associated-with-severity-and-mortality-in-stevens-johnson-syndrome-toxic-epidermal-necrolysis
#7
Shih-Chi Su, Maja Mockenhaupt, Pierre Wolkenstein, Ariane Dunant, Sabine Le Gouvello, Chun-Bing Chen, Olivier Chosidow, Laurence Valeyrie-Allanore, Teresa Bellon, Peggy Sekula, Chuang-Wei Wang, Martin Schumacher, Sylvia H Kardaun, Shuen-Iu Hung, Jean-Claude Roujeau, Wen-Hung Chung
Early diagnosis and prognosis monitoring for Stevens-Johnson syndrome (SJS)/ toxic epidermal necrolysis (TEN) still remain a challenge. This study aims to explore any cytokine/chemokine with prognostic potential in SJS/TEN. Through screening a panel of 28 serological factors, IL-6, IL-8, IL-15, TNF-α, and granulysin were upregulated in SJS/TEN patients and selected for the further validation in total 155 SJS/TEN patients, including 77 from Taiwan and 78 from RegiSCAR (the Registry of Severe Cutaneous Adverse Reactions)...
December 20, 2016: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/27994144/astrocyte-derived-interleukin-15-exacerbates-ischemic-brain-injury-via-propagation-of-cellular-immunity
#8
Minshu Li, Zhiguo Li, Yang Yao, Wei-Na Jin, Kristofer Wood, Qiang Liu, Fu-Dong Shi, Junwei Hao
Astrocytes are believed to bridge interactions between infiltrating lymphocytes and neurons during brain ischemia, but the mechanisms for this action are poorly understood. Here we found that interleukin-15 (IL-15) is dramatically up-regulated in astrocytes of postmortem brain tissues from patients with ischemic stroke and in a mouse model of transient focal brain ischemia. We generated a glial fibrillary acidic protein (GFAP) promoter-controlled IL-15-expressing transgenic mouse (GFAP-IL-15(tg)) line and found enlarged brain infarcts, exacerbated neurodeficits after the induction of brain ischemia...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27910764/metabolic-regulation-of-natural-killer-cell-ifn-%C3%AE-production
#9
Annelise Y Mah, Megan A Cooper
Metabolism is critical for a host of cellular functions and provides a source of intracellular energy. It has been recognized recently that metabolism also regulates differentiation and effector functions of immune cells. Although initial work in this field has focused largely on T lymphocytes, recent studies have demonstrated metabolic control of innate immune cells, including natural killer (NK) cells. Here, we review what is known regarding the metabolic requirements for NK cell activation, focusing on NK cell production of interferon-gamma (IFN-γ)...
2016: Critical Reviews in Immunology
https://www.readbyqxmd.com/read/27881938/are-interleukin-15-and-22-a-new-pathogenic-factor-in-pustular-palmoplantar-psoriasis
#10
Aleksandra Lesiak, Igor Bednarski, Marta Pałczyńska, Ewelina Kumiszcza, Marzena Kraska-Gacka, Anna Woźniacka, Joanna Narbutt
INTRODUCTION: Pustular palmoplantar psoriasis (PPP) is a rare type of psoriasis affecting mainly distal parts of the limbs. Despite numerous theories about etiology of PPP, the pathogenesis still remains unclear. Recent data indicate that interleukin (IL)-15, IL-17 and IL-22 enhance a proinflammatory response in certain skin inflammatory diseases such as psoriasis and atopic dermatitis. There is also evidence that anti-endomysial (anti-EMA) and anti-gliadin (AGA) antibodies are engaged in PPP development...
October 2016: Postȩpy Dermatologii i Alergologii
https://www.readbyqxmd.com/read/27880829/interleukin-15-il-15-strongly-correlates-with-increasing-hiv-1-viremia-and-markers-of-inflammation
#11
Sanjay Swaminathan, Ju Qiu, Adam W Rupert, Zonghui Hu, Jeanette Higgins, Robin L Dewar, Randy Stevens, Catherine A Rehm, Julia A Metcalf, Brad T Sherman, Michael W Baseler, H Clifford Lane, Tomozumi Imamichi
OBJECTIVE: IL-15 has been postulated to play an important role in HIV-1 infection, yet there are conflicting reports regarding its expression levels in these patients. We sought to measure the level of IL-15 in a large, well characterised cohort of HIV-1 infected patients and correlate this with well known markers of inflammation, including CRP, D-dimer, sCD163 and sCD14. DESIGN AND METHODS: IL-15 levels were measured in 501 people (460 patients with HIV-1 infection and 41 uninfected controls)...
2016: PloS One
https://www.readbyqxmd.com/read/27847409/effect-of-interleukin-15-on-cd11b-cd54-and-cd62l-expression-on-natural-killer-cell-and-natural-killer-t-like-cells-in-systemic-lupus-erythematosus
#12
Syh-Jae Lin, Ji-Yih Chen, Ming-Ling Kuo, Hsiu-Shan Hsiao, Pei-Tzu Lee, Jing-Long Huang
Adhesion molecules may play an important role in systemic lupus erythematosus (SLE) pathogenesis. We investigated the effect of interleukin- (IL-) 15 on CD11b, CD54, and CD62L expression on natural killer (NK) cells, T cells, and CD56(+)CD3(+) NKT-like cells from SLE subjects and healthy controls. SLE patients had decreased circulating NK cells and NKT-like cells compared to controls. NK cells from SLE patients showed higher CD11b and CD62L expression compared to controls. IL-15 enhanced CD11b and CD54 but downregulated CD62L expression on NK cells from SLE patients...
2016: Mediators of Inflammation
https://www.readbyqxmd.com/read/27837366/hippocampus-specific-deficiency-of-il-15r%C3%AE-contributes-to-greater-anxiety-like-behaviors-in-mice
#13
Linda Nguyen, Joseph Bohlen, Janelle Stricker, Ikttesh Chahal, Hanting Zhang, Emidio E Pistilli
A hippocampus-specific IL15RαKO mouse (hipIl15ra (fl/fl) /Cre(+)) was generated to test the hypothesis that the targeted deletion of interleukin-15 receptor alpha (IL-15Rα) in the hippocampus contributes to altered behavior, including greater levels of anxiety and ambulatory activity. Using Cre-loxP, exons 2 and 3 of the IL-15Rα gene were excised within the hippocampus, while normal expression was maintained within the rest of the brain. In the open field test (OFT), hipIl15ra (fl/fl) /Cre(+) spent a greater amount of time in the periphery and less time in the central portions of the chamber, and there was also a noticeable trend for decreased rearing activity; these behaviors are consistent with greater levels of anxiety-like behavior in these mice...
November 11, 2016: Metabolic Brain Disease
https://www.readbyqxmd.com/read/27830278/molecular-communication-from-skeletal-muscle-to-bone-a-review-for-muscle-derived-myokines-regulating-bone-metabolism
#14
REVIEW
Baosheng Guo, Zong-Kang Zhang, Chao Liang, Jie Li, Jin Liu, Aiping Lu, Bao-Ting Zhang, Ge Zhang
Besides the mechanical loading-dependent paradigm, skeletal muscle also serves as an endocrine organ capable of secreting cytokines to modulate bone metabolism. In this review, we focused on reviewing the myokines involved in communication from skeletal muscle to bone, i.e. (1) myostatin and myostatin-binding proteins including follistatin and decorin, (2) interleukins including interleukin-6 (IL-6), interleukin-7 (IL-7) and interleukin-15 (IL-15), (3) insulin-like growth factor 1 (IGF-1) and its binding proteins, (4) other myokines including PGC-1α-irisin system and osteoglycin (OGN)...
November 9, 2016: Calcified Tissue International
https://www.readbyqxmd.com/read/27824945/correction-deficiency-of-interleukin-15-confers-resistance-to-obesity-by-diminishing-inflammation-and-enhancing-the-thermogenic-function-of-adipose-tissues
#15
Gregory Lacraz, Volatiana Rakotoarivelo, Sebastien M Labbé, Mathieu Vernier, Christophe Noll, Marian Mayhue, Jana Stankova, Adel Schwertani, Guillaume Grenier, André Carpentier, Denis Richard, Gerardo Ferbeyre, Julie Fradette, Marek Rola-Pleszczynski, Alfredo Menendez, Marie-France Langlois, Subburaj Ilangumaran, Sheela Ramanathan
[This corrects the article DOI: 10.1371/journal.pone.0162995.].
2016: PloS One
https://www.readbyqxmd.com/read/27776794/oncolytic-influenza-a-virus-expressing-interleukin-15-decreases-tumor-growth-in%C3%A2-vivo
#16
Karin Hock, Johannes Laengle, Irina Kuznetsova, Andrej Egorov, Balazs Hegedus, Balazs Dome, Thomas Wekerle, Monika Sachet, Michael Bergmann
BACKGROUND: Interleukin-15 has become a promising molecule in the context of eliciting an effective, antitumor immune response because it is able to stimulate cells of the innate and adaptive immune system. METHODS: We generated an interleukin-15-expressing oncolytic influenza A virus for the treatment of an established murine tumor model. RESULTS: Our oncolytic influenza A virus produced large amounts of interleukin-15 and induced proliferation and activation of human T cells in vitro...
October 21, 2016: Surgery
https://www.readbyqxmd.com/read/27738421/il-15-mediates-mitochondrial-activity-through-a-ppar%C3%AE-dependent-ppar%C3%AE-independent-mechanism-in-skeletal-muscle-cells
#17
Shantaé M Thornton, James E Krolopp, Marcia J Abbott
Molecular mediators of metabolic processes, to increase energy expenditure, have become a focus for therapies of obesity. The discovery of cytokines secreted from the skeletal muscle (SKM), termed "myokines," has garnered attention due to their positive effects on metabolic processes. Interleukin-15 (IL-15) is a myokine that has numerous positive metabolic effects and is linked to the PPAR family of mitochondrial regulators. Here, we aimed to determine the importance of PPARα and/or PPARδ as targets of IL-15 signaling...
2016: PPAR Research
https://www.readbyqxmd.com/read/27686372/interleukin-15-enhances-the-proliferation-stimulatory-phenotype-and-antitumor-effector-functions-of-human-gamma-delta-t-cells
#18
Heleen H Van Acker, Sébastien Anguille, Yannick Willemen, Johan M Van den Bergh, Zwi N Berneman, Eva Lion, Evelien L Smits, Viggo F Van Tendeloo
BACKGROUND: Adoptive immunotherapy is gaining momentum to fight malignancies, whereby γδ T cells have received recent attention as an alternative cell source as to natural killer cells and αβ T cells. The advent of γδ T cells is largely due to their ability to recognize and target tumor cells using both innate characteristic and T cell receptor (TCR)-mediated mechanisms, their capacity to enhance the generation of antigen-specific T cell responses, and their potential to be used in an autologous or allogeneic setting...
September 29, 2016: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/27684068/deficiency-of-interleukin-15-confers-resistance-to-obesity-by-diminishing-inflammation-and-enhancing-the-thermogenic-function-of-adipose-tissues
#19
Gregory Lacraz, Volatiana Rakotoarivelo, Sebastien M Labbé, Mathieu Vernier, Christophe Noll, Marian Mayhue, Jana Stankova, Adel Schwertani, Guillaume Grenier, André Carpentier, Denis Richard, Gerardo Ferbeyre, Julie Fradette, Marek Rola-Pleszczynski, Alfredo Menendez, Marie-France Langlois, Subburaj Ilangumaran, Sheela Ramanathan
OBJECTIVE: IL-15 is an inflammatory cytokine secreted by many cell types. IL-15 is also produced during physical exercise by skeletal muscle and has been reported to reduce weight gain in mice. Contrarily, our findings on IL-15 knockout (KO) mice indicate that IL-15 promotes obesity. The aim of this study is to investigate the mechanisms underlying the pro-obesity role of IL-15 in adipose tissues. METHODS: Control and IL-15 KO mice were maintained on high fat diet (HFD) or normal control diet...
2016: PloS One
https://www.readbyqxmd.com/read/27683210/a-novel-self-cleavable-tag-zbasic-%C3%A2-i-cm-and-its-application-in-the-soluble-expression-of-recombinant-human-interleukin-15-in-escherichia-coli
#20
Siwei Shi, Huanhuan Chen, Hua Jiang, Yueqing Xie, Lei Zhang, Ninghuan Li, Chencen Zhu, Junsheng Chen, Han Luo, Jiaxian Wang, Lei Feng, Huili Lu, Jianwei Zhu
Soluble expression of recombinant therapeutic proteins in Escherichia coli (E. coli) has been a challenging task in biopharmaceutical development. In this study, a novel self-cleavable tag Zbasic-intein has been constructed for the soluble expression and purification of a recombinant cytokine, human interleukin-15 (IL-15). We screened several solubilizing tags fused with the self-cleavable Mycobacterium tuberculosis recA mini-intein ∆I-CM and demonstrated that Zbasic tag can significantly improve the solubility of the product with correspondent to the intein activity...
February 2017: Applied Microbiology and Biotechnology
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