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Th17 leukemia

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https://www.readbyqxmd.com/read/29158557/mir-29b-antagonizes-the-pro-inflammatory-tumor-promoting-activity-of-multiple-myeloma-educated-dendritic-cells
#1
C Botta, M Cucè, M R Pitari, D Caracciolo, A Gullà, E Morelli, C Riillo, L Biamonte, M E G Cantafio, R Prabhala, C Mignogna, A Di Vito, E Altomare, N Amodio, M T Di Martino, P Correale, M Rossi, A Giordano, N C Munshi, P Tagliaferri, P Tassone
Dendritic cells (DCs) play a key role in regulating tumor immunity, tumor cell growth and drug resistance. We hypothesized that multiple myeloma (MM) cells might recruit and reprogram DCs to a tumor-permissive phenotype by changes within their miRNA network. By analyzing 6 different miRNA-profiling datasets, miR-29b was identified as the only miRNA upregulated in normal mature DCs and significantly downregulated in tumor associated DCs. This finding was validated in primary DCs co-cultured in vitro with MM cell lines and in primary bone marrow DCs from MM patients...
November 21, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/29123956/mutations-in-jak2-and-calreticulin-genes-are-associated-with-specific-alterations-of-the-immune-system-in-myelofibrosis
#2
Marco Romano, Daria Sollazzo, Sara Trabanelli, Martina Barone, Nicola Polverelli, Margherita Perricone, Dorian Forte, Simona Luatti, Michele Cavo, Nicola Vianelli, Camilla Jandus, Francesca Palandri, Lucia Catani
Myelofibrosis (MF) is a clonal neoplasia associated with chronic inflammation due to aberrant cytokine production. Mutations in Janus Kinase-2 (JAK2), calreticulin (CALR) and myeloproliferative leukemia protein (MPL) genes have been recently associated to MF and they all activate the JAK/STAT signaling pathway. Since this pathway is essential in shaping the immune response, we investigated the role of circulating immune subsets and cytokines in 38 patients (20 carrying JAK2((V617F)),13 exon-9 CALR mutation and 5 triple negative)...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28906466/therapeutic-effect-of-exogenous-truncated-ik-protein-in-inflammatory-arthritis
#3
Seulgi Choi, HyeLim Park, SeoYeon Jung, Eun-Kyung Kim, Mi-La Cho, Jun-Ki Min, Su-Jin Moon, Sang-Myeong Lee, Jang-Hee Cho, Dong-Hee Lee, Jae-Hwan Nam
Inhibitor K562 (IK) protein was first isolated from the culture medium of K562, a leukemia cell line. It is known to be an inhibitory regulator of interferon-γ-induced major histocompatibility complex class (MHC) II expression. Previously, we found that transgenic (Tg) mice constitutively expressing truncated IK (tIK) showed reduced numbers of pathogenic Th1 and Th17 cells, which are known to be involved in the development of rheumatoid arthritis (RA). Here, we investigated whether exogenous tIK protein has a therapeutic effect in arthritis in disease models and analyzed its mechanism...
September 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28802664/cytokines-and-soluble-hla-g-levels-in-bone-marrow-stroma-and-their-association-with-the-survival-rate-of-patients-exhibiting-childhood-t-cell-acute-lymphoblastic-leukemia
#4
Renata Dos Santos Almeida, Alessandra Maria de Luna Ramos, Carlos Feitosa Luna, Francisco Pedrosa, Eduardo Antônio Donadi, Norma Lucena-Silva
Leukemic cells can induce defective expression of soluble factors and change marrow cytokine profile, leading to aberrant cell signaling, cell fixation and cell proliferation in bone marrow. T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive disorder which accounts for 15% of pediatric ALL. To evaluate the contribution of immunological factors on T-ALL survival, we measured Th1, Th2, Th17 cytokines and soluble HLA-G (sHLA-G) levels in bone marrow from 32 Brazilian children at diagnosis (D0), after induction (D19) and after consolidation (D49) of the chemotherapy phase...
August 9, 2017: Cytokine
https://www.readbyqxmd.com/read/28761880/therapeutic-effects-of-methanol-extract-from-euphorbia-kansui-radix-on-imiquimod-induced-psoriasis
#5
Soo Jeong Kim, Ye Won Jang, Kyung Eun Hyung, Da Kyoung Lee, Kee Hyeob Hyun, So-Young Park, Eon-Sub Park, Kwang Woo Hwang
The roots of Euphorbia kansui, which belong to the family Euphorbiaceae, have been used as a traditional medicine for the treatment of various diseases such as diabetes, ascites, and leukemia. Recently, it was reported that the methylene chloride fraction of E. kansui radix (EKC) regulated the differentiation of Th17 cells and alleviated the symptoms of Th17-related inflammatory bowel disease. Imiquimod (IMQ), a TLR7/8 agonist, has been used to induce psoriasis in a mouse model. In this study, we evaluated the effect of EKC in an IMQ-induced psoriasis model...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28650331/expression-of-th17-and-cd4-cd25-t-regulatory-cells-in-peripheral-blood-of-acute-leukemia-patients-and-their-prognostic-significance
#6
Mingli Xiang, Li Guo, Yan Ma, Yi Li
To discuss the expression of T helper cell 17 (Th17) cells and CD4+ CD25+ Foxp3+ regulatory T cells (Treg) in peripheral blood (PB) of patients with acute leukemia (AL), and to explore the relationship between them and disease prognosis. 40 patients diagnosed with acute leukemia in The First Affiliated Hospital of Zhengzhou University from July 2012 to August 2014 were selected as the observation group. Meanwhile, 40 healthy people were taken as the control group. Flow Cytometry Method (FCM) was used to detect the level of Th17 cells and CD4(+) CD25(+) Foxp3(+) cells in peripheral blood of the two groups, and enzyme-linked immuno sorbent assay (ELISA) method was used to test the level of IL17 and TGF-β in peripheral blood of two groups; reverse transcription-polymerase chain reaction (RT-PCR) was adopted to analyze the mRNA levels of RORγT and Foxp3 in peripheral blood...
March 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28423578/endothelial-microparticles-delivering-microrna-155-into-t-lymphocytes-are-involved-in-the-initiation-of-acute-graft-versus-host-disease-following-allogeneic-hematopoietic-stem-cell-transplantation
#7
Ran Zhang, Xiaoxiao Wang, Mei Hong, Ting Luo, Miaomiao Zhao, Haorui Shen, Jun Fang, Xiaojie Li, Sibin Zang, Ping Chen, Dimin Nie, Peng Zheng, Qiuling Wu, Linghui Xia
Endothelial microparticles (EMPs) upregulation has been observed in acute graft-versus-host disease (aGVHD) after allogeneic hematopoietic stem cell transplantation (allo-HSCT). However, the role of EMPs remains unclear. We found that EMPs derived from TNF-α-stimulated human umbilical vein endothelial cells (EA.hy926) concentrated more microRNA-155 (miR-155) compared with maternal cells. The miR-155 levels in MPs from peripheral blood of aGVHD patients and mice were remarkably elevated and significantly higher than the levels in plasma...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28405514/regulatory-b-cells-promote-graft-versus-host-disease-prevention-and-maintain-graft-versus-leukemia-activity-following-allogeneic-bone-marrow-transplantation
#8
Yue Hu, Gan-Lin He, Xiang-Yu Zhao, Xiao-Su Zhao, Yu Wang, Lan-Ping Xu, Xiao-Hui Zhang, Xue-Zhong Yu, Kai-Yan Liu, Ying-Jun Chang, Xiao-Jun Huang
Regulatory B cells (Bregs) are involved in the pathogenesis of graft-versus-host disease (GVHD). However, whether Bregs can alleviate acute GVHD without compromising graft-versus-leukemia (GVL) effects remains unclear. Here, we evaluated the role of Bregs in acute GVHD and GVL activity in both a mouse model and a clinical cohort study. In the acute GVHD mouse model, co-transplantation of Bregs prevents onset through inhibiting Th1 and Th17 differentiation and expanding regulatory T cells. In the GVL mouse model, Bregs contributed to the suppression of acute GVHD but had no adverse effect on GVL activity...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28375154/type-2-innate-lymphoid-cells-treat-and-prevent-acute-gastrointestinal-graft-versus-host-disease
#9
Danny W Bruce, Heather E Stefanski, Benjamin G Vincent, Trisha A Dant, Shannon Reisdorf, Hemamalini Bommiasamy, David A Serody, Justin E Wilson, Karen P McKinnon, Warren D Shlomchik, Paul M Armistead, Jenny P Y Ting, John T Woosley, Bruce R Blazar, Dietmar M W Zaiss, Andrew N J McKenzie, James M Coghill, Jonathan S Serody
Acute graft-versus-host disease (aGVHD) is the most common complication for patients undergoing allogeneic stem cell transplantation. Despite extremely aggressive therapy targeting donor T cells, patients with grade III or greater aGVHD of the lower GI tract, who do not respond to therapy with corticosteroids, have a dismal prognosis. Thus, efforts to improve understanding of the function of local immune and non-immune cells in regulating the inflammatory process in the GI tract during aGVHD are needed. Here, we demonstrate, using murine models of allogeneic BMT, that type 2 innate lymphoid cells (ILC2s) in the lower GI tract are sensitive to conditioning therapy and show very limited ability to repopulate from donor bone marrow...
May 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28375102/expression-of-th17-and-cd4-cd25-t-regulatory-cells-in-peripheral-blood-of-acute-leukemia-patients-and-their-prognostic-significance
#10
Mingli Xiang, Li Guo, Yan Ma, Yi Li
To discuss the expression of T helper cell 17 (Th17) cells and CD4+ CD25+ Foxp3+ regulatory T cells (Treg) in peripheral blood (PB) of patients with acute leukemia (AL), and to explore the relationship between them and disease prognosis. 40 patients diagnosed with acute leukemia in The First Affiliated Hospital of Zhengzhou University from July 2012 to August 2014 were selected as the observation group. Meanwhile, 40 healthy people were taken as the control group. Flow Cytometry Method (FCM) was used to detect the level of Th17 cells and CD4(+) CD25(+) Foxp3(+) cells in peripheral blood of the two groups, and enzyme-linked immuno sorbent assay (ELISA) method was used to test the level of IL17 and TGF-β in peripheral blood of two groups; reverse transcription-polymerase chain reaction (RT-PCR) was adopted to analyze the mRNA levels of RORγT and Foxp3 in peripheral blood...
November 2016: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28183349/hif-1%C3%AE-inhibitor-echinomycin-reduces-acute-graft-versus-host-disease-and-preserves-graft-versus-leukemia-effect
#11
Yushi Yao, Lei Wang, Jihao Zhou, Xinyou Zhang
BACKGROUND: Acute graft-versus-host disease (aGVHD) remains a major obstacle against favorable clinical outcomes following allogeneic hematopoietic stem cell transplantation (allo-HSCT). T helper cells including Th17 play key roles in aGVHD pathogenesis. Donor regulatory T cell (Tregs) adoptive therapy reduces aGVHD without weakening graft-versus-leukemia effect (GVL) in both mouse and human, although the purification and ex vivo expansion of Tregs in clinical scenarios remain costly and technically demanding...
February 10, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28167485/expression-of-th17-and-cd4-cd25-t-regulatory-cells-in-peripheral-blood-of-acute-leukemia-patients-and-their-prognostic-significance
#12
Mingli Xiang, Li Guo, Yan Ma, Yi Li
To discuss the expression of T helper cell 17 (Th17) cells and CD4+ CD25+ Foxp3+ regulatory T cells (Treg) in peripheral blood (PB) of patients with acute leukemia (AL), and to explore the relationship between them and disease prognosis. 40 patients diagnosed with acute leukemia in The First Affiliated Hospital of Zhengzhou University from July 2012 to August 2014 were selected as the observation group. Meanwhile, 40 healthy people were taken as the control group. Flow Cytometry Method (FCM) was used to detect the level of Th17 cells and CD4(+) CD25(+) Foxp3(+) cells in peripheral blood of the two groups, and enzyme-linked immuno sorbent assay (ELISA) method was used to test the level of IL17 and TGF-β in peripheral blood of two groups; reverse transcription-polymerase chain reaction (RT-PCR) was adopted to analyze the mRNA levels of RORγT and Foxp3 in peripheral blood...
November 2016: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27927767/t-cells-in-chronic-lymphocytic-leukemia-display-dysregulated-expression-of-immune-checkpoints-and-activation-markers
#13
Marzia Palma, Giusy Gentilcore, Kia Heimersson, Fariba Mozaffari, Barbro Näsman-Glaser, Emma Young, Richard Rosenquist, Lotta Hansson, Anders Österborg, Håkan Mellstedt
Chronic lymphocytic leukemia is characterized by impaired immune functions largely due to profound T-cell defects. T-cell functions also depend on co-signaling receptors, inhibitory or stimulatory, known as immune checkpoints, including cytotoxic T-lymphocyte-associated antigen-4 (CTLA-4) and programmed death-1 (PD-1). Here we analyzed the T-cell phenotype focusing on immune checkpoints and activation markers in chronic lymphocytic leukemia patients (n=80) with different clinical characteristics and compared them to healthy controls...
March 2017: Haematologica
https://www.readbyqxmd.com/read/27815572/phase-i-ii-study-of-lenalidomide-and-alemtuzumab-in-refractory-chronic-lymphocytic-leukemia-cll-effects-on-t-cells-and-immune-checkpoints
#14
Maria Winqvist, Fariba Mozaffari, Marzia Palma, Sandra Eketorp Sylvan, Lotta Hansson, Håkan Mellstedt, Anders Österborg, Jeanette Lundin
This phase I-II study explored safety, immunomodulatory and clinical effects of lenalidomide (weeks 1-16) and alemtuzumab (weeks 5-16) in 23 patients with refractory chronic lymphocytic leukemia. Most patients had Rai stage III/IV disease and were heavily pretreated (median 4 prior therapies), and 61% had del(17p)/del(11q). Eleven of 19 evaluable patients (58%) responded, with a median response duration of 12 months (1-29+); time to progression was short in non-responders. Lenalidomide had a narrow therapeutic dose range, 2...
January 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/27777437/an-open-labeled-multicenter-phase-ii-study-of-tamibarotene-in-patients-with-steroid-refractory-chronic-graft-versus-host-disease
#15
MULTICENTER STUDY
Yoshinobu Maeda, Hisakazu Nishimori, Yoshihiro Inamoto, Hirohisa Nakamae, Masashi Sawa, Yasuo Mori, Kazuteru Ohashi, Shin-Ichiro Fujiwara, Mitsune Tanimoto
Chronic graft-versus-host disease (GVHD) is a major cause of late death and morbidity following allogeneic hematopoietic cell transplantation (HSCT). Retinoic acid (tamibarotene) exerts multiple effects on cell differentiation and is clinically used for the treatment of acute promyelocytic leukemia. Tamibarotene down-regulates both Th1 and Th17 differentiation in donor T cells after allogeneic HSCT, resulting in attenuation of experimental chronic GVHD. Based on preclinical data, we have launched a phase II study of tamibarotene in patients with steroid-refractory chronic GVHD...
October 2016: Acta Medica Okayama
https://www.readbyqxmd.com/read/27584054/increased-il-10-il-17-ratio-is-aggravated-along-with-the-prognosis-of-patients-with-chronic-lymphocytic-leukemia
#16
Nannan Pang, Rui Zhang, Jinhua Li, Zhenghao Zhang, Hailong Yuan, Gang Chen, Fang Zhao, Lei Wang, Haizhou Cao, Jianhua Qu, Jianbing Ding
OBJECTIVE: This study is to investigate the association between the Treg/Th17 cells and prognosis of chronic lymphocytic leukemia (CLL). METHODS: Totally 50 CLL patients and 20 Health controls were included in this study. Regulatory T (Treg) cells and the cell subset secreting IL-17 (Th17) in peripheral blood were detected with flow cytometry. Serum levels of IL-10 and IL-17 were determined with ELISA, and expression of Foxp3 and RORγt was assessed with quantitative real-time PCR...
November 2016: International Immunopharmacology
https://www.readbyqxmd.com/read/27471619/efficacy-of-antineoplastic-treatment-is-associated-with-the-use-of-antibiotics-that-modulate-intestinal-microbiota
#17
Natali Pflug, Sandra Kluth, Jörg J Vehreschild, Jasmin Bahlo, Daniela Tacke, Lena Biehl, Barbara Eichhorst, Kirsten Fischer, Paula Cramer, Anna-Maria Fink, Michael von Bergwelt-Baildon, Stephan Stilgenbauer, Michael Hallek, Oliver A Cornely, Maria J G T Vehreschild
Reduced anticancer efficacy of cyclophosphamide and platinum salts has been reported in animals treated with anti-Gram-positive antibiotics. These effects were related to translocation of Gram-positive bacteria during mucositis with subsequent induction of cytotoxic oxygen reactive species and tumor invasion by pathogenic Th17 cells. To assess these hypotheses in a clinical setting, we identified patients receiving cyclophosphamide for chronic lymphocytic leukemia (CLL) and cisplatin for relapsed lymphoma. Data originated from the CLL8 trial (NCT00281918) and the Cologne Cohort of Neutropenic Patients (NCT01821456)...
June 2016: Oncoimmunology
https://www.readbyqxmd.com/read/27176825/increased-th17-cells-and-il-17a-exist-in-patients-with-b-cell-acute-lymphoblastic-leukemia-and-promote-proliferation-and-resistance-to-daunorubicin-through-activation-of-akt-signaling
#18
Laixi Bi, Junqing Wu, Aifang Ye, Jianbo Wu, Kang Yu, Shenghui Zhang, Yixiang Han
BACKGROUND: Immune regulation is crucial for the pathogenesis of B-cell acute lymphoblastic leukemia (B-ALL). It has been reported that Th17 cells as a newly identified subset of CD4(+) T cells are involved in the pathogenesis of several hematological disorders. However, the role of Th17 cells in the pathophysiology of B-ALL is still unclear. METHODS: The frequencies of T cells were determined by flow cytometry in the peripheral blood and bone marrow of 44 newly diagnosed B-ALL patients and 25 age-matched healthy donors...
May 12, 2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27057428/expansion-of-myeloid-derived-suppressor-cells-correlates-with-number-of-t-regulatory-cells-and-disease-progression-in-myelodysplastic-syndrome
#19
Astrid Olsnes Kittang, Shahram Kordasti, Kristoffer Evebø Sand, Benedetta Costantini, Anne Marijn Kramer, Pilar Perezabellan, Thomas Seidl, Kristin Paulsen Rye, Karen Marie Hagen, Austin Kulasekararaj, Øystein Bruserud, Ghulam J Mufti
Although the role of CD4(+) T cells and in particular Tregs and Th17 cells is established in myelodysplastic syndrome(MDS), the contribution of other components of immune system is yet to be elucidated fully. In this study we investigated the number and function of myeloid derived suppressor cells (MDSCs) in fresh peripheral blood and matched bone marrow samples from 42 MDS patients and the potential correlation with risk of disease progression to acute myeloid leukemia (AML). In peripheral blood, very low-/low risk patients had significantly lower median MDSC number (0...
February 2016: Oncoimmunology
https://www.readbyqxmd.com/read/26984928/discovery-of-enhancers-of-the-secretion-of-leukemia-inhibitory-factor-for-the-treatment-of-multiple-sclerosis
#20
Laura Vela, Iván Caballero, Leiping Fang, Qin Liu, Fernando Ramón, Emilio Díez, Maite de Los Frailes
Multiple sclerosis (MS) is an autoimmune neurodegenerative disease that involves activation of T cells, microglia, and astrocytes. There is a clear unmet medical need for MS, as current therapies reduce the relapse rate, but are unable to prevent the neurological deterioration. Leukemia inhibitory factor (LIF) is a proinflammatory cytokine that can also positively modulate the immune response, by inducing the inhibition of myelin-reactive TH17 differentiation, and by promoting oligodendrocyte-mediated myelination...
June 2016: Journal of Biomolecular Screening
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