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https://www.readbyqxmd.com/read/28640942/polyfunctional-response-by-immtac-imcgp100-redirected-cd8-and-cd4-t-cells
#1
Caroline Boudousquie, Giovanna Bossi, Jacob M Hurst, Karolina A Rygiel, Bent K Jakobsen, Namir J Hassan
The success of immune system based cancer therapies depends on a broad immune response engaging a range of effector cells and mechanisms. Immune mobilising monoclonal TCRs against cancer (ImmTAC(™) molecules, fusion proteins consisting of a soluble, affinity enhanced TCR and an anti-CD3 scFv Ab) were previously shown to redirect CD8(+) and CD4(+) T cells against tumours. Here we present evidence that IMCgp100 (ImmTAC recognising a peptide derived from the melanoma-specific protein, gp100, presented by HLA-A*0201) efficiently redirects and activates effector and memory cells from both CD8(+) and CD4(+) repertoires...
June 22, 2017: Immunology
https://www.readbyqxmd.com/read/28635405/effects-of-microwave-ablation-on-t-cell-subsets-and-cytokines-of-patients-with-hepatocellular-carcinoma
#2
Haiwen Zhang, Xiaowei Hou, Hongjian Cai, Xingjun Zhuang
OBJECTIVES: To investigate the effects of microwave ablation on T-lymphocyte subsets and cytokines in patients with hepatocellular carcinoma. MATERIAL AND METHODS: Peripheral blood was collected from 45 patients with hepatocellular carcinoma treated by microwave ablation before treatment, one week and one month after treatment. T cells (CD3+, CD4+ and CD8+ cells), CD4+ CD25+ Tregs, and CD16+ CD56+ NK cells were analyzed by flow cytometry. Levels of cytokines (IL-2, IFN-γ, TNF-α, IL-12, IL-4, IL-6, IL-8, and IL-10) were determined by a Luminex 200 analyzer...
February 20, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28634161/oncolytic-adenovirus-expressing-bispecific-antibody-targets-t-cell-cytotoxicity-in-cancer-biopsies
#3
Joshua D Freedman, Joachim Hagel, Eleanor M Scott, Ioannis Psallidas, Avinash Gupta, Laura Spiers, Paul Miller, Nikolaos Kanellakis, Rebecca Ashfield, Kerry D Fisher, Margaret R Duffy, Leonard W Seymour
Oncolytic viruses exploit the cancer cell phenotype to complete their lytic life cycle, releasing progeny virus to infect nearby cells and repeat the process. We modified the oncolytic group B adenovirus EnAdenotucirev (EnAd) to express a bispecific single-chain antibody, secreted from infected tumour cells into the microenvironment. This bispecific T-cell engager (BiTE) binds to EpCAM on target cells and cross-links them to CD3 on T cells, leading to clustering and activation of both CD4 and CD8 T cells. BiTE transcription can be controlled by the virus major late promoter, limiting expression to cancer cells that are permissive for virus replication...
June 20, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28634120/highly-reproducible-improved-label-free-quantitative-analysis-of-cellular-phosphoproteome-by-optimization-of-lc-ms-ms-gradient-and-analytical-column-construction
#4
Nagib Ahsan, Judson Belmont, Zhuo Chen, James G Clifton, Arthur R Salomon
Expanding the sequencing depth of the peptides with a statistically significant quantitative change derived from a biological stimulation is critical. Here we demonstrate that optimization of LC gradient and analytical column construction can reveal over 30,000 unique peptides and 23,000 phosphopeptides at high confidence. The quantitative reproducibility of different analytical workflows was evaluated by comparing the phosphoproteome of CD3/4 stimulated and unstimulated T-cells as a model system. A fritless, 50cm-long column packed with 1...
June 17, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28632999/long-noncoding-rna-lnc-sox5-modulates-crc-tumorigenesis-by-unbalancing-tumor-microenvironment
#5
Wu Kaiming, Zhenxian Zhao, Kuanzhi Liu, Jian Zhang, Guanghua Li, Liang Wang
Long non-coding RNAs (LncRNAs) have been recently regarded as systemic regulators in multiple biological processes including tumorigenesis. In this study, we observed the expression of lncRNA lnc-sox5 was significantly increased in colorectal cancer (CRC). Despite the CRC cell growth, cell cycle and cell apoptosis was not affected by lnc-sox5 knock-down, lnc-sox5 knock-down suppressed CRC cell migration and invasion. In addition, xenograft animal model suggested that lnc-sox5 knock-down significantly suppressed the CRC tumorigenesis...
June 20, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28632936/peritumoral-cuffing-by-t-cell-tumor-infiltrating-lymphocytes-distinguishes-hpv-related-oropharyngeal-squamous-cell-carcinoma-from-oral-cavity-squamous-cell-carcinoma
#6
Kate Poropatich, David Hernandez, Joel Fontanarosa, Koshonna Brown, Gayle Woloschak, Ajit Paintal, Kirtee Raparia, Sandeep Samant
BACKGROUND: It is unclear why human papillomavirus (HPV)-related head and neck squamous cell carcinoma (HNSCC) has improved clinical behavior compared to HPV-negative HNSCC. We sought to better characterize the immune microenvironment of tongue cancers by examining the CD3 and CD8 TIL pattern in HPV-positive and -negative tumors. METHODS: Histologic sections from 40 oral tongue and oropharyngeal cases were analyzed (n= 21 HPV DNA-positive, n= 19 HPV DNA-negative)...
June 20, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28631654/composite-lymphoma-with-coexistence-of-diffuse-large-b-cell-lymphoma-and-anaplastic-large-cell-lymphoma-diagnostic-pitfalls
#7
Meyyappa Devan Rajagopal, Rakhee Kar, Debdatta Basu, Sunu Lazar Cyriac
Composite lymphoma is a rare tumor composed of two or more distinct lymphomas in the same topographic site or tissue. Several combinations of B-cell non-Hodgkin lymphoma (NHL), T-cell NHL, and Hodgkin lymphoma can occur with different prognoses and treatments. The coexistence of a B-cell NHL and a T-cell NHL is unusual. The exact etiology of composite lymphoma is unknown; however, few mechanisms have been proposed to explain its pathogenesis. The chemotherapeutic protocols are heterogeneous but are essentially targeted against the high-grade component...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28631651/follicular-variant-of-peripheral-t-cell-lymphoma
#8
Archana Lakshmanan, S Annapurneswari, Sheila Nair
Globally, peripheral T-cell lymphomas (PTCLs) constitute about 12% of all non-Hodgkin lymphomas, of which the unspecified category is the most common subtype (30%). Mostly, the unspecified category shows a diffuse pattern of involvement in the lymph nodes. However, rarely, they may show a follicular/nodular pattern mimicking a follicular lymphoma. We report a case of a follicular variant of PTCL, not otherwise specified. This case displayed a striking nodular/follicular pattern with an admixture of small (centrocyte-like) and large (centroblast-like) cells, thus mimicking a follicular lymphoma...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28631630/diagnostic-value-of-immunohistochemistry-staining-of-bcl-2-cd34-cd20-and-cd3-for-distinction-between-discoid-lupus-erythematosus-and-lichen-planus-in-the-skin
#9
Mazaher Ramezani, Bita-Sadat Hashemi, Sedigheh Khazaei, Mansour Rezaei, Ali Ebrahimi, Masoud Sadeghi
BACKGROUND: Cluster of differentiation (CD) markers is a classification system for monoclonal antibodies against cell surface molecules on leukocytes and antigens from other cells. AIMS: The aim of this study is to evaluate immunohistochemical markers in patients with discoid lupus erythematosus (DLE) and lichen planus (LP) and correlation of these markers in two groups and with the normal group in the West of Iran. SETTINGS AND DESIGN: Analytical cross-sectional study...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28630386/low-17%C3%AE-estradiol-levels-are-better-inducers-of-regulatory-conditioned-t-cells-in-vitro
#10
Ramina Fatemi, Ebrahim Mirzadegan, Zohreh Vahedian, Amir Hassan Zarnani, Mahmood Jeddi-Tehrani, Farah Idali
BACKGROUND: 17β-estradiol (E2) has been known to modulate immune response. Recent studies indicate that E2 at pregnancy level plays a role in regulating T cell response. OBJECTIVE: To investigate the optimum dose of E2 (from 10-9 to 10-7 M) in mediating the generation of regulatory T cells (Tregs), using naive human CD4+ T cells from healthy women. METHODS: Naive peripheral T cells were purified and conditioned with soluble anti-CD28 in anti-CD3-coated plates in the presence or absence of E2...
June 2017: Iranian Journal of Immunology: IJI
https://www.readbyqxmd.com/read/28629732/impact-of-granulocyte-contamination-on-pbmc-integrity-of-shipped-blood-samples-implications-for-multi-center-studies-monitoring-regulatory-t-cells
#11
Charuta Agashe, David Chiang, Alexander Grishin, Madhan Masilamani, Stacie M Jones, Robert A Wood, Scott H Sicherer, A Wesley Burks, Donald Y M Leung, Peter Dawson, Hugh A Sampson, M Cecilia Berin
In centralized immune monitoring for a multi-center allergen immunotherapy trial, we observed frequent loss of CD4(+) T cell integrity following staining of cultured PBMCs with our regulatory T cell flow cytometry panel. Samples were marked by a loss of total cellular events, altered scatter properties, and reduced CD3(+)CD4(+) events. This occurred only in samples that were stained with Foxp3 and were therefore treated with Foxp3 fixation-permeabilization buffer. We identified granulocyte contamination in samples associated with a loss of integrity, and went on to test the impact of granulocyte depletion on day-old blood samples...
June 16, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28628777/effects-of-adipose-stem-cell-sheets-on-colon-anastomotic-leakage-in-an-experimental-model-proof-of-principle
#12
Panithi Sukho, Geesien S A Boersema, Abigael Cohen, Nicole Kops, Johan F Lange, Jolle Kirpensteijn, Jan Willem Hesselink, Yvonne M Bastiaansen-Jenniskens, Femke Verseijden
The most dreaded complication of colorectal surgery is anastomotic leakage. Adipose tissue-derived stem cell sheets (ASC sheets) prepared from temperature-responsive culture surfaces can be easily transplanted onto tissues. These sheets are proposed to improve cell transplant efficiency and enhance wound healing. The aim of this study was to investigate whether application of ASC sheets could prevent leakage of sutured colorectal anastomoses. Insufficient suturing of colorectal anastomoses was performed in Wistar rats to create a colorectal anastomotic leakage model...
June 9, 2017: Biomaterials
https://www.readbyqxmd.com/read/28626950/myxoid-variant-of-primary-cutaneous-anaplastic-large-cell-lymphoma-first-two-cases
#13
Angel Fernandez-Flores, Ariana Eginli, David S Cassarino
Anaplastic large cell lymphoma (ALCL) is a CD30+ T-cell non-Hodgkin lymphoma with two main clinical presentations: primary cutaneous (pcALCL) and systemic (sALCL). While rare cases of myxoid sALCL have been reported, there are no previous cases of myxoid pcALCL reported. We present two unusual cases of pcALCL showing prominent collections of dermal mucin closely intermingling with the anaplastic lymphocytes. Patient 1 was a 30-year-old woman who presented with ulcerated nodules on her neck, abdomen, chest, and shoulders...
June 19, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28626633/mediastinal-hemangioendothelioma-case-report-and-review-of-the-literature
#14
Davide Patrini, Laura Scolamiero, Reena Khiroya, David Lawrence, Elaine Borg, Martin Hayward, Nikolaos Panagiotopoulos
BACKGROUND: Epithelioid haemangioendothelioma (EHE) is a rare low-grade vascular neoplasm that can arise in the lung, liver, soft tissues or, less commonly, bone. Due to its low prevalence of less than one in a million and its non-specific clinical features, EHE is often misdiagnosed and managed inappropriately. Here we discuss the case of a 58 year-old gentleman with mediastinal EHE and review existing literature on pulmonary EHE (PEH). CASE HISTORY: A 58 year-old gentleman presented to our outpatient Clinic with chest discomfort and palpitations...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28626055/ischemic-stroke-what-does-the-histological-composition-tell-us-about-the-origin-of-the-thrombus
#15
Peter B Sporns, Uta Hanning, Wolfram Schwindt, Aglaé Velasco, Jens Minnerup, Tarek Zoubi, Walter Heindel, Astrid Jeibmann, Thomas Ulrich Niederstadt
BACKGROUND AND PURPOSE: The introduction of stent retrievers allows for a complete extraction and histological analysis of human thrombi. Ischemic stroke is a major health issue, and differentiation of underlying causes is highly relevant to prevent recurrent stroke. Therefore, histopathologic analysis of the embolic clots after removal may provide valuable information about underlying pathologies. This study analyzes histological clot composition and aims to identify specific patterns that might help to distinguish causes of ischemic stroke...
June 16, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28625894/evaluation-of-protective-immunity-induced-by-dna-vaccination-with-genes-encoding-toxoplasma-gondii-gra17-and-gra23-against-acute-toxoplasmosis-in-mice
#16
Wei-Ning Zhu, Jin-Lei Wang, Kai Chen, Dong-Mei Yue, Xiao-Xuan Zhang, Si-Yang Huang, Xing-Quan Zhu
Toxoplasma gondii, an obligatory intracellular protozoan, can cause serious public health problems and economic losses worldwide. Two novel dense granule proteins (GRA17 and GRA23) were recently identified as T. gondii-secreted proteins which are localized to the parasitophorous vacuole membrane (PVM) and can mediate the movement of small molecules between the host cell and parasitophorous vacuole (PV). In the present study, we evaluated the protective immunity induced by DNA vaccination with genes encoding GRA17 and GRA23 against acute toxoplasmosis in mice...
June 15, 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28625883/tcr-cd3-cd4-cd8-effector-t-cells-in-psoriasis
#17
D Brandt, M Sergon, S Abraham, K Mäbert, C M Hedrich
The autoimmune/inflammatory disorder psoriasis is characterized by keratinocyte proliferation and immune cell infiltration of the skin. TCR(+)CD3(+)CD4(-)CD8(-) "double negative" (DN) T cells can derive from CD8(+) T cells through the down-regulation of CD8. The inhibitory molecule programmed death (PD-)1 is expressed on activated T cells and plays a role in the maintenance of peripheral tolerance. A subset of DN T cells, characterized by the expression of PD-1, has recently been demonstrated to be self-reactive...
June 15, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28624782/g-csf-inhibits-lfa-1-mediated-cd4-t-cell-functions-by-inhibiting-lck-and-zap-70
#18
Shasha Zhao, Zhenyang Gu, Li Wang, Lixun Guan, Feiyan Wang, Nan Yang, Lan Luo, Zhe Gao, Yingwei Song, Lili Wang, Daihong Liu, Chunji Gao
In this study, we showed that G-CSF mobilization increased the frequency of T cells, specifically CD3+CD4+ T cells. G-CSF mobilization decreased the secretion of inflammatory cytokines of CD4+ T cells through the LFA-1/ICAM-1 signaling pathway, whereas it did not alter the TH1/TH2 ratio. We found that G-CSF mobilization inhibited LFA-1-mediated CD4+ T cell polarization and motility. In vitro, G-CSF stimulation also attenuated the polarization and adhesiveness of CD4+ T cells through the LFA-1/ICAM-1 interaction...
May 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28620928/the-importance-of-the-number-of-transplanted-cells-with-dipeptidyl-peptidase-4-expression-on-the-haematopoietic-recovery-and-lymphocyte-reconstitution-in-patients-with-multiple-myeloma-after-autologous-haematopoietic-stem-cell-transplantation
#19
Anna Kopinska, Małgorzata Krawczyk-Kulis, Joanna Dziaczkowska-Suszek, Katarzyna Bieszczad, Krystyna Jagoda, Slawomira Kyrcz-Krzemien
Autologous haematopoietic stem cell transplantation (AHSCT) remains recommended treatment in the first remission in multiple myeloma (MM). In earlier research it has been suggested that there is an influence of the expression of dipeptidyl peptidase-4 (CD26) on both the homing and lymphocyte reconstitution after AHSCT. The aim of the study is to investigate the influence of transplanted cells CD26+ on the haematopoietic recovery and lymphocyte reconstitution after AHSCT in MM. Forty eight patients with MM underwent AHSCT in our centre...
June 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28620825/flow-cytometric-characterization-of-t-cell-subsets-and-microglia-after-repetitive-mild-traumatic-brain-injury-in-rats
#20
Ruojing Bai, Huabin Gao, Zhaoli Han, Shan Huang, Xintong Ge, Fanglian Chen, Ping Lei
Although, there is growing awareness in the progressive neurodegeneration of chronic traumatic encephalopathy, changes of immune reactions remain equivocal at best. Thus, in a clinically relevant rat repetitive mild traumatic brain injury (rmTBI) model, some immunologic cells (T cell subsets, microglia) in the injured brain and peripheral blood were analyzed by flow cytometry and immunofluorescence. In the injured brain, CD3(+) T cells showed a bimodal increase during 42 days post-injury (dpi). CD3(+)CD4(+) T cells firstly increased and then decreased, while CD3(+)CD8(+) T cells had reversed tendency...
June 15, 2017: Neurochemical Research
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