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https://www.readbyqxmd.com/read/27903296/factors-affecting-long-term-efficacy-of-t-regulatory-cell-based-therapy-in-type-1-diabetes
#1
Natalia Marek-Trzonkowska, Małgorzata Myśliwiec, Dorota Iwaszkiewicz-Grześ, Mateusz Gliwiński, Ilona Derkowska, Magdalena Żalińska, Maciej Zieliński, Marcelina Grabowska, Hanna Zielińska, Karolina Piekarska, Anna Jaźwińska-Curyłło, Radosław Owczuk, Agnieszka Szadkowska, Krystyna Wyka, Piotr Witkowski, Wojciech Młynarski, Przemysława Jarosz-Chobot, Artur Bossowski, Janusz Siebert, Piotr Trzonkowski
BACKGROUND: Recent studies suggest that immunotherapy using T regulatory cells (Tregs) prolongs remission in type 1 diabetes (T1DM). Here, we report factors that possibly affect the efficacy of this treatment. METHODS: The metabolic and immune background of 12 children with recently diagnosed T1DM, as well as that of untreated subjects, during a 2-year follow-up is presented. Patients were treated with up to 30 × 10(6)/kg b.w. of autologous expanded CD3(+)CD4(+)CD25(high)CD127(-) Tregs...
December 1, 2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27902325/targeting-naturally-occurring-epitope-variants-of-hepatitis-c-virus-with-high-affinity-t-cell-receptors
#2
Huajun Zhang, Jianbing Zhang, Lei Chen, Zhiming Weng, Ye Tian, Haifeng Zhao, Youjia Li, Lin Chen, Zhaoduan Liang, Hongjun Zheng, Wenzhuo Zhao, Shi Zhong, Yi Li
Hepatitis C virus (HCV) readily establishes chronic infection, which is characterized by failure of virus-specific CD8+ T cells. HCV uses epitope mutation and T-cell exhaustion to escape from the host immune response. Previously, we engineered high-affinity T-cell receptors (HATs) targeting HIV escape mutants. In this study, the affinity of a T-cell receptor specific for the human leukocyte antigen (HLA)-A2-restricted HCV immunodominant epitope NS3 1406-1415 (KLVALGINAV) was improved from a KD of 6.6 µM to 40 pM...
November 11, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27901470/sinomenine-prevents-the-development-of-cardiomyopathy-in-diabetic-rats-by-inhibiting-inflammatory-responses-and-blocking-activation-of-nf-%C3%AE%C2%BAb
#3
Cheng Jiang, Yun-Long Tong, Dan Zhang, Li-Zhi Liu, Ju-Fei Wang
Diabetic cardiomyopathy is a severe complication of diabetes mellitus (DM). The goal of current work was to study the effects of sinomenine on streptozotocin-induced cardiomyopathy in rats. DM in rats was induced by intraperitoneal injection of streptozotocin. Cardiac function was evaluated by measuring left ventricle end-diastolic diameter, left ventricle end-systolic diameter and ejection fraction. Cardiac inflammation was evaluated by the degree of infiltration of T lymphocytes and the levels of pro-inflammatory cytokines...
November 30, 2016: General Physiology and Biophysics
https://www.readbyqxmd.com/read/27900483/indigo-naturalis-ameliorates-murine-dextran-sodium-sulfate-induced-colitis-via-aryl-hydrocarbon-receptor-activation
#4
Shoichiro Kawai, Hideki Iijima, Shinichiro Shinzaki, Satoshi Hiyama, Toshio Yamaguchi, Manabu Araki, Shuko Iwatani, Eri Shiraishi, Akira Mukai, Takahiro Inoue, Yoshito Hayashi, Masahiko Tsujii, Daisuke Motooka, Shota Nakamura, Tetsuya Iida, Tetsuo Takehara
BACKGROUND: Indigo Naturalis (IN) is used as a traditional herbal medicine for ulcerative colitis (UC). However, the mechanisms of action of IN have not been clarified. We aimed to evaluate the efficacy of IN for ameliorating colonic inflammation. We further investigated the mechanisms of action of IN. METHODS: Colitis severity was assessed in dextran sodium sulfate-induced colitis and trinitrobenzene sulfonic acid-induced colitis models with or without the oral administration of IN or indigo, which is a known major component of IN...
November 29, 2016: Journal of Gastroenterology
https://www.readbyqxmd.com/read/27900092/primary-orbital-precursor-t-cell-lymphoblastic-lymphoma-report-of-a-unique-case
#5
Lisa Stenman, Marta Persson, Fredrik Enlund, Erik Clasen-Linde, Göran Stenman, Steffen Heegaard
Primary T-cell lymphoblastic lymphoma (T-LBL) in the eye region is very rare. The present study described a unique case of T-LBL involving the extraocular muscles. A 22-year-old male patient presented with a 3-week history of headache, reduced visual acuity and edema of the left eye. Clinical examination revealed left-sided exophthalmus, periorbital edema, chemosis, and reduced motility of the left eye. A magnetic resonance imaging scan revealed thickening of the left orbital muscles and a positron emission tomography-computed tomography scan also demonstrated activity in a subclavicular lymph node...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27899414/sentinel-case-of-richter-transformation-from-chronic-lymphocytic-leukaemia-small-lymphocytic-lymphoma-to-cd3-diffuse-large-b-cell-lymphoma
#6
Ali Ismail, Jawed A Mallick, Dahui Qin, Mohammad O Hussaini
AIM: To report the first case of a Richter syndrome where small lymphocytic lymphoma (SLL) progressed to a CD3+ diffuse large B-cell lymphoma (DLBCL). METHODS: Macrodissection of small and large cell lymphomatous components was performed. This was followed by flow cytometric analysis along with molecular B-cell immunoglobulin (heavy and light chains) and T-cell receptor (γ and β chains) gene rearrangement studies to investigate a clonal relationship between the components...
November 29, 2016: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/27899095/effects-of-the-ayurved-siriraj-wattana-recipe-on-functional-and-phenotypic-characterization-of-cytokine-induced-killer-cells-and-dendritic-cells-in-vitro
#7
Adisak Wongkajornsilp, Nuntarak Numchaisermsuk, Khanit Sa-Ngiamsuntorn, Pravit Akarasereenont, Valla Wamanuttajinda, Kanda Kasetsinsombat, Sunisa Duangsa-Ard, Tawee Laohapan, Kittipong Maneechotesuwan
BACKGROUND: Ayurved Siriraj Wattana recipe (AVS073), has been prescribed as tonic, to increase appetite, and for pain relief. It also exhibits antioxidant, anti-inflammatory, immunomodulating and anti-cancer activities. However, the immunomodulatory effects on antigen-presenting cells and effector T cells remained elusive. We thus aimed to study the effects of AVS073 on differentiation, maturation, functions and proportions of CIK cells and monocyte-derived DCs. METHODS: CIK cells and monocyte-derived DCs were treated with AVS073, followed by the assessment of T-helper (Th) phenotypes using real-time RT-PCR and flow cytometry...
November 29, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27896231/prolonged-complete-hematologic-response-in-relapsed-refractory-t-large-granular-lymphocyte-leukemia-after-bendamustine-treatment
#8
R Rosamilio, V Giudice, I Ferrara, S Annunziata, L Pezzullo, G Villani, C Baldi, R Guariglia, M Rocco, C Selleri
T-large granular lymphocyte leukemia (T-LGLL) is a chronic clonal proliferation of effector memory cytotoxic CD3(+)CD57(+)CD56(-) T cells and the current guidelines suggest immunosuppressive therapy as first-line therapy, but the treatment of refractory/relapsed patients is still challenging due to the lack of prospective studies. We describe a series of two refractory/relapsed T-LGLL patients successfully treated with bendamustine, a chemotherapeutic agent largely used for B-cell neoplasms, but poorly investigated for the treatment of T-cell diseases...
November 2016: Translational Medicine @ UniSa
https://www.readbyqxmd.com/read/27895776/establishment-of-specific-cytotoxic-t-lymphocyte-culture-system-and-its-inhibitory-effect-on-ovarian-cancer
#9
Mingxing Sui, Lihui Si, Tianmin Xu, Manhua Cui
The present study aimed to establish a novel method for efficiently inducing cytotoxic T lymphocytes (CTLs) in vitro, in order to develop an immune-based therapy for suppressing and killing ovarian cancer cells with a high safety and efficacy. Peripheral blood mononuclear cells (PBMCs) were stimulated with CpG oligodeoxynucleotide (CpGODN) and ginsenoside Rg1, which were united as an immune adjuvant, and human epidermal growth factor receptor 2 (HER2/neu) antigen peptide, in order to establish a specific CTL culture system in vitro...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27895167/pgi2-controls-pulmonary-nk-cells-that-prevent-airway-sensitization-to-house-dust-mite-allergen
#10
Bryan Simons, Maria E Ferrini, Sophia Carvalho, David J P Bassett, Zeina Jaffar, Kevan Roberts
In allergic asthma, inhalation of airborne allergens such as the house dust mite (HDM) effectively activates both innate and adaptive immunity in the lung mucosa. To determine the role of the eicosanoid PGI2 and its receptor IP during allergic airway sensitization, HDM responses in mice lacking a functional IP receptor (i.e., PGI2 IP receptor-deficient [IP(-/-)]) were compared with wild type (WT) mice. Surprisingly, IP(-/-) mice had increased numbers of pulmonary CD3(-)NK1.1(+)Ly49b(+) NK cells producing IFN-γ that was inversely associated with the number of type 2 innate lymphoid cells (ILC2s) expressing IL-33Rα and IL-13 compared with WT animals...
November 28, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27892871/phenotypic-modulation-of-porcine-cd14-monocytes-natural-killer-natural-killer-t-cells-and-cd8%C3%AE-%C3%AE-t-cell-subsets-by-an-antibody-derived-killer-peptide-kp
#11
Luca Ferrari, Paolo Borghetti, Giulia Ferrarini, Elena De Angelis, Elena Canelli, Giulia Ogno, Alessia Catella, Tecla Ciociola, Walter Magliani, Paolo Martelli
An engineered killer peptide (KP) based on a recombinant anti-idiotypic antibody representing the functional image of a yeast killer toxin (KT) was demonstrated to mediate antimicrobial effects against fungi and viruses. KP binds to murine dendritic cells and macrophages and up-regulate co-receptor expression, thus sustaining CD4+ lymphocyte activation. No immunological data are available in domestic animals thus KP-induced immunomodulation was evaluated in porcine monocyte and lymphocyte subsets. PBMC from healthy adult pigs were stimulated with KP or a scramble peptide (SP), or kept unstimulated for 24, 48 and 72h, and subsequently analyzed by flow cytometry...
September 14, 2016: Research in Veterinary Science
https://www.readbyqxmd.com/read/27891129/immunological-and-translational-aspects-of-nk-cell-based-antitumor-immunotherapies
#12
REVIEW
Maxim Shevtsov, Gabriele Multhoff
Natural killer (NK) cells play a pivotal role in the first line of defense against cancer. NK cells that are deficient in CD3 and a clonal T cell receptor (TCR) can be subdivided into two major subtypes, CD56(dim)CD16(+) cytotoxic and CD56(bright)CD16(-) immunoregulatory NK cells. Cytotoxic NK cells not only directly kill tumor cells without previous stimulation by cytotoxic effector molecules, such as perforin and granzymes or via death receptor interactions, but also act as regulatory cells for the immune system by secreting cytokines and chemokines...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27890077/t-lymphocyte-immunophenotypes-in-the-cerebrospinal-fluid-of-dogs-with-visceral-leishmaniasis
#13
Fernanda G Grano, José Eduardo Dos S Silva, Guilherme D Melo, Juliana Perosso, Valéria M F Lima, Gisele F Machado
Visceral leishmaniasis (VL) is a disease causing several clinical manifestations in dogs, including neurological disorders. Nevertheless, there are few studies related to the evaluation of the brain alterations during VL. Evidences of the involvement of cerebral barriers in infected dogs was reported, including the presence of brain inflammatory infiltrate, with a predominance of CD3+ T cells. Therefore, the aim of this study was to determine the immunophenotypes of T lymphocytes in the cerebrospinal fluid (CSF), as well as in peripheral blood, and to correlate with brain alterations in dogs with VL...
December 15, 2016: Veterinary Parasitology
https://www.readbyqxmd.com/read/27889334/leukocytes-in-expressed-breast-milk-of-asthmatic-mothers
#14
D-L Dixon, K D Forsyth
OBJECTIVE: Infants are born immunologically immature. However, breastfeeding mothers retain an immunological link to their infants. While it is generally accepted that infants are at an immunological advantage when compared with formula-fed infants, the benefit of long-term exclusive breastfeeding by atopic mothers remains controversial. Inconsistency in the conferral of benefit may be due to differences in the immunological constituents passed to the recipient infant. The aim of this investigation was to examine the profile of human milk cells and cytokines from asthmatic compared to non-asthmatic mothers...
November 23, 2016: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/27888664/ebv-associated-but-hhv8-unrelated-double-hit-effusion-based-lymphoma
#15
Bo-Jung Chen, David Yen-Ting Chen, Chun-Chi Kuo, Shih-Sung Chuang
Effusion-based lymphoma is a rare and unique type of large B-cell lymphoma presenting in effusion without a mass lesion. It shares many clinicopathological features with primary effusion lymphoma (PEL), but is distinct from PEL by the absence of HHV8 association. Double hit lymphoma (DHL) is an aggressive B-cell lymphoma, defined by concurrent rearrangement of MYC and BCL2 or BCL6. DHL often presents as lymphadenopathy or an extranodal mass, but rarely occurs in effusion. Here we report a 61-year-old male with alcoholic cirrhosis presenting as massive ascites and left pleural effusion...
November 26, 2016: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/27887864/optimization-of-cgmp-purification-and-expansion-of-umbilical-cord-blood-derived-t-regulatory-cells-in-support-of-first-in-human-clinical-trials
#16
David H McKenna, Darin Sumstad, Diane M Kadidlo, Bjorn Batdorf, Colin J Lord, Sarah C Merkel, Christine M Koellner, Julie M Curtsinger, Carl H June, James L Riley, Bruce L Levine, Jeffrey S Miller, Claudio G Brunstein, John E Wagner, Bruce R Blazar, Keli L Hippen
BACKGROUND AIMS: Thymic-derived regulatory T cells (tTreg) are critical regulators of the immune system. Adoptive tTreg transfer is a curative therapy for murine models of autoimmunity, graft rejection, and graft-versus-host disease (GVHD). We previously completed a "first-in-human" clinical trial using in vitro expanded umbilical cord blood (UCB)-derived tTreg to prevent GVHD in patients undergoing UCB hematopoietic stem cell transplantation (HSCT). tTreg were safe and demonstrated clinical efficacy, but low yield prevented further dose escalation...
November 22, 2016: Cytotherapy
https://www.readbyqxmd.com/read/27884732/natural-killer-cell-subsets-and-receptor-expression-in-peripheral-blood-mononuclear-cells-of-a-healthy-korean-population-reference-range-influence-of-age-and-sex-and-correlation-between-nk-cell-receptors-and-cytotoxicity
#17
Minh-Trang Phan, Sejong Chun, Sun-Hee Kim, Alaa Kassim Ali, Seung-Hwan Lee, Seokho Kim, Soo-Hyun Kim, Duck Cho
BACKGROUND: The purpose of this study was to identify CD56(bright) and CD56(dim) natural killer (NK) cell subsets and analyze their receptors expression in a healthy Korean population, and to determine whether receptor expression correlates with age, sex, and cytotoxicity. MATERIALS AND METHODS: We performed multicolor flow cytometry assays to analyze the expression of various NK cell receptors (CD16, NKG2A, NKG2C, NKG2D, CD57, DNAM-1, CD8a, CD62L, NKp30, and NKp46) on both CD3(-)/CD56(dim) and CD3(-)/CD56(bright) NK cells in whole-blood samples from 122 healthy donors...
November 21, 2016: Human Immunology
https://www.readbyqxmd.com/read/27884436/distribution-of-foxp3-t-cells-in-the-liver-and-hepatic-lymph-nodes-of-goats-and-sheep-experimentally-infected-with-fasciola-hepatica
#18
A Escamilla, R Zafra, J Pérez, T N McNeilly, I L Pacheco, L Buffoni, F J Martínez-Moreno, V Molina-Hernández, A Martínez-Moreno
Foxp3 regulatory T cells (Tregs) are now considered to play a key role in modulation of immune responses during parasitic helminth infections. Immunomodulation is a key factor in Fasciola hepatica infection; however, the distribution and role of Foxp3(+) Tregs cells have not been investigated in F. hepatica infected ruminants. The aim of this study was to evaluate the presence of Foxp3(+) Tregs in the liver and hepatic lymph nodes from experimentally infected sheep and goats during acute and chronic stages of infection...
October 30, 2016: Veterinary Parasitology
https://www.readbyqxmd.com/read/27882430/identification-of-cardiovascular-risk-factors-associated-with-bone-marrow-cell-subsets-in-patients-with-stemi-a-biorepository-evaluation-from-the-cctrn-time-and-latetime-clinical-trials
#19
Ariadna Contreras, Aaron F Orozco, Micheline Resende, Robert C Schutt, Jay H Traverse, Timothy D Henry, Dejian Lai, John P Cooke, Roberto Bolli, Michelle L Cohen, Lem Moyé, Carl J Pepine, Phillip C Yang, Emerson C Perin, James T Willerson, Doris A Taylor
Autologous bone marrow mononuclear cell (BM-MNC) therapy for patients with ST-segment elevation myocardial infarction (STEMI) has produced inconsistent results, possibly due to BM-MNC product heterogeneity. Patient-specific cardiovascular risk factors (CRFs) may contribute to variations in BM-MNC composition. We sought to identify associations between BM-MNC subset frequencies and specific CRFs in STEMI patients. Bone marrow was collected from 191 STEMI patients enrolled in the CCTRN TIME and LateTIME trials...
January 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/27882356/intra-osseous-co-transplantation-of-cd34-selected-umbilical-cord-blood-and-mesenchymal-stromal-cells
#20
Leland Metheny, Saada Eid, Karen Lingas, Jane Reese, Howard Meyerson, Alexander Tong, Marcos de Lima, Alex Y Huang
Human mesenchymal stromal cells (MSC) have been shown to support the growth and differentiation of hematopoietic stem cells (HSC). We hypothesized that intra-osseous (IO) co-transplantation of MSC and umbilical cord blood (UCB) may be effective in improving early HSC engraftment, as IO transplantation has been demonstrated to enhance UCB engraftment in NOD SCID-gamma (NSG) mice. Following non-lethal irradiation (300rads), 6 groups of NSG mice were studied: 1) intravenous (IV) UCB CD34(+) cells, 2) IV UCB CD34(+) cells and MSC, 3) IO UCB CD34(+) cells, 4) IO UCB CD34(+) cells and IO MSC, 5) IO UCB CD34(+) cells and IV MSC, and 6) IV UCB CD34(+) and IO MSC...
2016: Hematol Med Oncol
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