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https://www.readbyqxmd.com/read/28941416/increased-cycles-of-dc-cik-immunotherapy-decreases-frequency-of-tregs-in-patients-with-resected-nsclc
#1
Haiping Song, Shujuan Liu, Ziyun Zhao, Weihong Sun, Xiaofang Wei, Xuezhen Ma, Peng Zhao, Daiqing Gao
Regulatory T cells (Tregs) suppress antitumor immune responses. Cycles of Dendritic cells (DC) vaccination combined with cytokine-induced killer (CIK) cells (DC/CIK) treatment were significantly related with good prognosis. Therefore, we investigated whether increased cycles of immunotherapy could decrease frequency of Tregs in patients with resected non-small cell lung cancer (NSCLC). Previous study from our laboratory has determined that the optimal cutoff point of the cycle count was 3cycles. We examined the levels of Tregs and the related cytokines by flow cytometric and cytokine analysis in these patients after more than (≥) 3cycles or less than (<) 3cycles of DC/CIK cell treatment...
September 20, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28938788/cd4-t-cells-dominate-the-leukocyte-infiltration-response-initiated-by-intra-dermal-injection-of-phytohemagglutinin-into-growing-feathers-in-chickens
#2
K S Sullivan, G F Erf
Phytohemagglutinin (PHA) is commonly used to evaluate cell-mediated immunocompetence. In chickens, PHA is typically injected intra-dermally (i.d.) into the skin (e.g., wing web, wattle, or footpad), and the tissue swelling response is monitored, whereby the extent of tissue swelling positively relates to the individual's cell-mediated immune system capabilities. Although i.d. injected PHA was shown to stimulate mononuclear cell and basophil infiltration to the site of injection, reports on temporal, qualitative, and quantitative aspects of the local cutaneous PHA response are limited...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938609/pegylated-arginine-deiminase-can-modulate-tumor-immune-microenvironment-by-affecting-immune-checkpoint-expression-decreasing-regulatory-t-cell-accumulation-and-inducing-tumor-t-cell-infiltration
#3
Elena Brin, Katherine Wu, Hsin-Tze Lu, Yudou He, Zhaoming Dai, Wei He
PEGylated arginine deiminase (ADI-PEG 20) is being investigated in clinical studies in arginine auxotrophic cancers and is well-tolerated. The anti-tumor properties of ADI-PEG 20 have been extensively investigated - ADI-PEG 20 inhibits the growth of auxotrophic cancers in vitro and in vivo - however, its impact on immune cells is largely unknown. Here we report the potential impact of ADI-PEG 20 on the tumor immune microenvironment. ADI-PEG 20 induced immunosuppressive programmed death-ligand 1 expression on some cancer cells in vitro, but the magnitude of the increase was cell line dependent and in most relatively small...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938593/endoplasmic-reticulum-stress-mediated-membrane-expression-of-crt-erp57-induces-immunogenic-apoptosis-in-drug-resistant-endometrial-cancer-cells
#4
Qin Xu, Chuanben Chen, An Lin, Yunqing Xie
OBJECTIVE: To investigate the role of endoplasmic reticulum (ER) stress-mediated CRT/ERp57 complex expression underlying the mechanism of resistance to doxorubicin (DOX) in endometrial carcinoma (EC) in vivo and in vitro. METHODS: The expression of CRT, ERp57, p-PERK, eIF2α, p-eIF2α in EC patients and EC cells was detected by Western blots and by immunofluorescence assay. MTT assay was used to determine the LC50 of EC cells to DOX and cell viability. Apoptosis was assayed using flow cytometer...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938533/trans-sialidase-based-vaccine-candidate-protects-against-trypanosoma-cruzi-infection-not-only-inducing-an-effector-immune-response-but-also-affecting-cells-with-regulatory-suppressor-phenotype
#5
Estefanía Prochetto, Carolina Roldán, Iván A Bontempi, Daiana Bertona, Luz Peverengo, Miguel H Vicco, Luz M Rodeles, Ana R Pérez, Iván S Marcipar, Gabriel Cabrera
Prophylactic and/or therapeutic vaccines have an important potential to control Trypanosoma cruzi (T. cruzi)infection. The involvement of regulatory/suppressor immune cells after an immunization treatment and T. cruzi infection has never been addressed. Here we show that a new trans-sialidase-based immunogen (TSf) was able to confer protection, correlating not only with beneficial changes in effector immune parameters, but also influencing populations of cells related to immune control. Regarding the effector response, mice immunized with TSf showed a TS-specific antibody response, significant delayed-type hypersensitivity (DTH) reactivity and increased production of IFN-γ by CD8+ splenocytes...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938530/cd3xpdl1-bi-specific-t-cell-engager-bite-simultaneously-activates-t-cells-and-nkt-cells-kills-pdl1-tumor-cells-and-extends-the-survival-of-tumor-bearing-humanized-mice
#6
Lucas A Horn, Nicholas G Ciavattone, Ryan Atkinson, Netsanet Woldergerima, Julia Wolf, Virginia K Clements, Pratima Sinha, Munanchu Poudel, Suzanne Ostrand-Rosenberg
Bi-specific T cell engagers (BiTEs) activate T cells through CD3 and target activated T cells to tumor-expressed antigens. BiTEs have shown therapeutic efficacy in patients with liquid tumors; however, they do not benefit all patients. Anti-tumor immunity is limited by Programmed Death 1 (PD1) pathway-mediated immune suppression, and patients who do not benefit from existing BiTES may be non-responders because their T cells are anergized via the PD1 pathway. We have designed a BiTE that activates and targets both T cells and NKT cells to PDL1(+) cells...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938496/icaritin-improves-antibody-induced-thrombocytopenia-in-a-mouse-model-by-regulating-t-cell-polarization
#7
Chenghong Sun, Jian Yang, Mingzhi Wang, Lihong Pan, Jingchun Yao, Shenglan Wang, Na Guo, Chunyan Li, Guimin Zhang
Previous studies have shown that icaritin (ICT) has significant protective effects on immune thrombocytopenia (ITP), and the present study aimed to discuss the mechanism of this protective effect from the aspect of regulating T-cell polarization by an antibody-induced ITP mice model. Mice were given rat anti-mouse CD41 antibody (MWReg30) by intraperitoneal injection for 7 d to produce ITP model. At the same time, ICT was administrated at 10 mg/kg/d orally for 9 d. Peripheral blood platelets were counted by hematology analyzer...
September 22, 2017: Planta Medica
https://www.readbyqxmd.com/read/28938112/non-coding-transcription-instructs-chromatin-folding-and-compartmentalization-to-dictate-enhancer-promoter-communication-and-t-cell-fate
#8
Takeshi Isoda, Amanda J Moore, Zhaoren He, Vivek Chandra, Masatoshi Aida, Matthew Denholtz, Jan Piet van Hamburg, Kathleen M Fisch, Aaron N Chang, Shawn P Fahl, David L Wiest, Cornelis Murre
It is now established that Bcl11b specifies T cell fate. Here, we show that in developing T cells, the Bcl11b enhancer repositioned from the lamina to the nuclear interior. Our search for factors that relocalized the Bcl11b enhancer identified a non-coding RNA named ThymoD (thymocyte differentiation factor). ThymoD-deficient mice displayed a block at the onset of T cell development and developed lymphoid malignancies. We found that ThymoD transcription promoted demethylation at CTCF bound sites and activated cohesin-dependent looping to reposition the Bcl11b enhancer from the lamina to the nuclear interior and to juxtapose the Bcl11b enhancer and promoter into a single-loop domain...
September 21, 2017: Cell
https://www.readbyqxmd.com/read/28938014/intestinal-helminth-infection-drives-carcinogenesis-in-colitis-associated-colon-cancer
#9
Eva Pastille, Annika Frede, Henry J McSorley, Jessica Gräb, Alexandra Adamczyk, Sebastian Kollenda, Wiebke Hansen, Matthias Epple, Jan Buer, Rick M Maizels, Robert Klopfleisch, Astrid M Westendorf
Inflammatory bowel diseases (IBD) are chronic inflammatory disorders of the gastrointestinal tract, strongly associated with an increased risk of colorectal cancer development. Parasitic infections caused by helminths have been shown to modulate the host's immune response by releasing immunomodulatory molecules and inducing regulatory T cells (Tregs). This immunosuppressive state provoked in the host has been considered as a novel and promising approach to treat IBD patients and alleviate acute intestinal inflammation...
September 22, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28938005/recombinant-vaccines-of-a-cd4-t-cell-epitope-promote-efficient-control-of-paracoccidioides-brasiliensis-burden-by-restraining-primary-organ-infection
#10
Rodrigo Assunção Holanda, Julián Esteban Muñoz, Lucas Santos Dias, Leandro Buffoni Roque Silva, Julliana Ribeiro Alves Santos, Sthefany Pagliari, Érica Leandro Marciano Vieira, Tatiane Alves Paixão, Carlos Pelleschi Taborda, Daniel Assis Santos, Oscar Bruña-Romero
Paracoccidioidomycosis (PCM) is an infectious disease endemic to South America, caused by the thermally dimorphic fungi Paracoccidioides. Currently, there is no effective human vaccine that can be used in prophylactic or therapeutic regimes. We tested the hypothesis that the immunogenicity of the immunodominant CD4+ T-cell epitope (P10) of Paracoccidioides brasiliensis gp43 antigen might be significantly enhanced by using a hepatitis B virus-derived particle (VLP) as an antigen carrier. This chimera was administered to mice as a (His)6-purified protein (rPbT) or a replication-deficient human type 5 adenoviral vector (rAdPbT) in an immunoprophylaxis assay...
September 22, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28937975/umbilical-cord-blood-cells-for-treatment-of-cerebral-palsy-timing-and-treatment-options
#11
REVIEW
Courtney A McDonald, Michael C Fahey, Graham Jenkin, Suzanne L Miller
Cerebral palsy is the most common cause of physical disability in children, and there is no cure. Umbilical cord blood (UCB) cell therapy for the treatment of children with cerebral palsy is currently being assessed in clinical trials. While there is much interest in the use of UCB stem cells for neuroprotection and neuroregeneration, the mechanisms of action are not fully understood. Further, UCB contains many stem and progenitor cells of interest, and we will point out that individual cell types within UCB may elicit specific effects...
September 22, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28937963/ki67-and-lymphocytes-in-the-pretherapeutic-core-biopsy-of-primary-invasive-breast-cancer-positive-markers-of-therapy-response-prediction-and-superior-survival
#12
REVIEW
Claus M Schlotter, Lothar Tietze, Ulf Vogt, Carlos Villena Heinsen, Antje Hahn
Background Core needle biopsy plays a crucial role as diagnostic tool for BC. Both Ki67 and likely tumor-infiltrating lymphocytes (TILs) in the near future are determining the kind of systemic therapy. The role of TILs in BC is still an issue for clinical research, albeit preliminary results of neoadjuvant and adjuvant clinical studies already now highlight the crucial impact of TILs on therapy response and survival. Methods Evaluation of related publications (pubmed) and meeting abstracts (ASCO, SABCS). Results The monoclonal antibody Ki67 recognizing a nuclear antigene in proliferating cells is a positive marker of therapy response and superior survival...
September 22, 2017: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/28937681/primary-t-cells-for-mrna-mediated-immunotoxin-delivery
#13
R Eggers, A Philippi, M O Altmeyer, F Breinig, M J Schmitt
Immune cells become increasingly attractive as delivery system for immunotoxins in cancer therapy in order to reduce the intrinsic toxicity and severe side effects of chimeric protein toxins. In this study, we investigated the potential of human primary T cells to deliver a secreted immunotoxin through transient mRNA transfection. The chimeric protein toxin was directed towards the neovasculature of cancer cells by fusing a truncated version of Pseudomonas exotoxin A (PE38) to human vascular endothelial growth factor (VEGF) and to the single chain variable fragment (scFv) of anti-Her2/neu...
September 22, 2017: Gene Therapy
https://www.readbyqxmd.com/read/28937435/immunophenotype-expression-change-from-cd52-to-cd52-on-erythrodermic-peripheral-t-cell-lymphoma-not-otherwise-specified-after-treatment-with-alemtuzumab
#14
Maulik M Dhandha, Kari E Sufficool, Claudia I Vidal, Katherine J Robbins, Mark J Fesler, Jacqueline R Batanian, Maria Yadira Hurley
No abstract text is available yet for this article.
September 11, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28937430/cutaneous-richter-syndrome-mimicking-primary-cutaneous-cd4-positive-small-medium-t-cell-lymphoma-case-report-and-review-of-the-literature
#15
Miguel Rito, José Cabeçadas, Joaninha Costa Rosa, Mariana Cravo, Alistair Robson
Richter syndrome represents the transformation of chronic lymphocytic leukemia (CLL)/small lymphocytic lymphoma into an aggressive large B-cell lymphoma. Skin involvement is exceptionally rare, with <20 cases reported and its presence as the first presentation of CLL/small lymphocytic lymphoma, as an isolated skin lesion has never been described. Primary cutaneous CD4-positive small/medium T-cell lymphoma (CD4 PCSM-TCL) characteristically presents with a dense dermal infiltrate consisting primarily of small-/medium-sized pleomorphic T-cells and less than 30% large pleomorphic cells...
September 12, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28937406/tolerance-in-xenotransplantation
#16
Kazuhiko Yamada, Megan Sykes, David H Sachs
PURPOSE OF REVIEW: This review describes recent progress in tolerance-inducing strategies across xenogeneic immunological barriers as well as the potential benefit of a tolerance strategy for islets and kidney xenotransplantation. RECENT FINDINGS: Using advanced gene editing technologies, xenotransplantation from multitransgenic alpha-1,3-galactosyltransferase knockout pigs has demonstrated marked prolongation of renal xenograft survival, ranging from days to greater than several months for life-supporting kidneys, and more than 2 years in a heterotopic nonlife-supporting cardiac xenograft model...
September 20, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28937394/leukemic-phase-of-hepatosplenic-t-cell-lymphoma-a-great-masquerader-of-acute-leukemia
#17
Saniya Sharma, Sreejesh Sreedharanunni, Man Updesh Singh Sachdeva, Gaurav Prakash, Neelam Varma
No abstract text is available yet for this article.
July 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28937369/study-of-association-of-epstein-barr-virus-in-lymphomas-by-epstein-barr-virus-encoded-rna-in-situ-hybridization-an-indian-perspective-from-a-tertiary-care-cancer-institute
#18
Roshani Gala, Jatin S Gandhi, Gurudutt Gupta, Shrruti K Grover, Anila Sharma, Sunil Pasricha, Anurag Mehta
BACKGROUND: The Epstein-Barr virus (EBV), also called human herpesvirus 4, is a virus of the herpes family. The EBV-associated lymphomas include Burkitt lymphoma, classic Hodgkin lymphoma (HL), lymphomas arising in immunocompromised individuals, peripheral T-cell lymphomas, angioimmunoblastic T-cell lymphoma, extranodal nasal-type natural killer/T-cell lymphoma, and other rare histotypes. OBJECTIVE: The present study evaluated the role of EBV as an etiologic agent in various lymphomas and determined an Indian perspective in a tertiary care cancer center compared to that of Western literature...
July 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28937034/effect-of-cordyceps-sinensis-on-the-treatment-of-experimental-autoimmune-encephalomyelitis-a-pilot-study-on-mice-model
#19
Shan-Shan Zhong, Ya-Juan Xiang, Pen-Ju Liu, Yang He, Ting-Ting Yang, Yang-Yang Wang, A Rong, Jun Zhang, Guang-Zhi Liu
BACKGROUND: As a traditional Chinese medicine, Cordyceps sinensis (CS) possesses a variety of immunoregulatory properties. This study aimed to explore the therapeutic potential of CS in a mice model of multiple sclerosis (MS)-experimental autoimmune encephalomyelitis (EAE). METHODS: Female C57BL/6 mice were immunized with myelin oligodendrocyte glycoprotein35-55to induce EAE, followed by an instant intragastric feeding with a low dosage of CS (low-CS group, n = 5), high dosage of CS (high-CS group, n = 5), or the same volume of normal saline (control group, n = 5)...
October 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28936778/preferential-reduction-of-circulating-innate-lymphoid-cells-type-2-in-patients-with-common-variable-immunodeficiency-with-secondary-complications-is-part-of-a-broader-immune-dysregulation
#20
David Friedmann, Baerbel Keller, Ina Harder, Jonas Schupp, Yakup Tanriver, Susanne Unger, Klaus Warnatz
PURPOSE: Over a third of patients with common variable immunodeficiency (CVID) suffer from secondary complications like inflammatory organ disease, autoimmune manifestations, or lymphoproliferation contributing to increased morbidity and mortality in affected patients. Innate lymphoid cells (ILCs) have emerging roles in setting the milieu for physiological, but also pathological, immune responses and inflammation. We therefore sought to correlate the recently identified disturbed homeostasis of ILCs with alterations of the adaptive immune system in complex CVID patients (CVIDc)...
September 21, 2017: Journal of Clinical Immunology
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