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https://www.readbyqxmd.com/read/29397826/-mechanism-of-mtor-pathway-in-k562-cell-apoptosis-induced-by-homoharringtonine
#1
Yi-Han Ding, Jing-Jing Wu, Qian Wang, Zhi-Kui Deng, Yu-Feng Li
OBJECTIVE: To investigate the effect of homoharringtonine (HHT) on proliferation and apoptosis of CML cell line K562 cells and to explore its possible mechanism through mTOR pathway. METHODS: K562 cells were cultured with different concentrations of HHT or in its combination with mTOR inhibitor rapamycin (RAPA) for 24 hours. The cell viability was analyzed by CCK-8 assay, the cell apoptosis was detected by flow cytometry, the expressions of BCL-6, Caspase-3 and mTOR signal pathway related proteins was assayed by Western blot, the expression of BCL-6 mRNA was determined by RT-PCR...
February 2018: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/29380929/checkpoint-molecule-expression-by-b-and-t-cell-lymphomas-in-dogs
#2
G Hartley, R Elmslie, S Dow, A Guth
Immunotherapies targeting checkpoint molecule programmed cell death 1 (PD-1) protein were shown to be effective for treatment of non-Hodgkin lymphoma in people, but little is known about the expression of PD-1 or its ligand PD-L1 by canine lymphoma. Therefore, flow cytometry was used to analyse expression of PD-1 and PD-L1 in canine lymphoma, using fine-needle aspirates of lymph nodes from 34 dogs with B cell lymphoma (BCL), 6 dogs with T cell lymphoma (TCL) and 11 dogs that had relapsed. Furthermore, fine-needle aspirates were obtained from 17 healthy dogs for comparison...
January 30, 2018: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/29377743/leptin-upregulates-peripheral-cd4-cxcr5-icos-t-cells-via-increased-il-6-in-rheumatoid-arthritis-patients
#3
Miaomiao Wang, Jing Wei, Han Li, Xunli Ouyang, Xiaotong Sun, Yawei Tang, Haifeng Chen, Bing Wang, Xia Li
CD4+CXCR5+ICOS+ T cells, known as Tfh (T Follicular helper) cells, are required for antibody production. Abnormal production and differentiation of Tfh cells are involved in many autoimmune diseases, including rheumatoid arthritis (RA). Leptin has the property of modulating immune system. Here, we explored the effect of leptin on CD4+CXCR5+ICOS+ T cells production in RA patients. Serum leptin levels were measured by enzyme-linked immunosorbent assay (ELISA). Peripheral blood mononuclear cells (PBMC) stimulated with CD3/CD28 were cultured in the presence and absence of leptin and with or without anti-IL-6 receptor (anti-IL-6R), anti-IL-21R, and anti-IL-12R antibody respectively...
January 29, 2018: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/29349567/hbeag-induces-the-expression-of-macrophage-mir-155-to-accelerate-liver-injury-via-promoting-production-of-inflammatory-cytokines
#4
Wenwen Wang, Hongjun Bian, Feifei Li, Xiao Li, Di Zhang, Shuohuan Sun, Shouyang Song, Qiang Zhu, Wanhua Ren, Chengyong Qin, Jianni Qi
Activation of Kupffer cells (KCs) induced that inflammatory cytokine production plays a central role in the pathogenesis of HBV infection. The previous studies from our and other laboratory demonstrated miRNAs can regulate TLR-inducing inflammatory responses to macrophage. However, the involvement of miRNAs in HBV-associated antigen-induced macrophage activation is still not thoroughly understood. Here, we evaluated the effects and mechanisms of miR-155 in HBV-associated antigen-induced macrophage activation...
January 18, 2018: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29333888/primary-diffuse-large-b-cell-lymphoma-of-the-ciliary-body
#5
Hayyam Kiratli, Abdullah Ağın, Berrin Büyükeren, Figen Söylemezoğlu
PURPOSE: To report an unusual case of an eye with primary ciliary body lymphoma which came to enucleation allowing detailed histopathological examination. METHODS: A 50-year-old man presented with a painful loss of vision in the left eye. The clinical, imaging, and immunohistopathological features of this case were reviewed. RESULTS: The vision in the left eye was light perception. There were keratic precipitates, an irregular and thickened iris with neovascularization...
January 15, 2018: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/29325249/-clinicopathologic-features-of-primary-hepatic-marginal-zone-lymphoma-of-mucosa-associated-lymphoid-tissue-and-hepatic-pseudolymphoma
#6
C Liu, X Li, H Li, Q X Gong, Y Li, Z Wang, Z H Zhang
Objective: To study the clinicopathological features of primary hepatic extranodal marginal zone lymphoma of mucosa associated lymphoid tissue (MALT lymphoma) and hepatic pseudolymphoma, and to discuss their differential diagnosis, treatment and prognosis. Methods: Three primary hepatic MALT lymphomas and two hepatic pseudolymphomas collected from January 2012 to March 2017 in the First Affiliated Hospital of Nanjing Medical University were evaluated by HE and immunohistochemistry(IHC), in-situ hybridization and immunoglobulin (Ig) gene rearrangement detection, and the relevant literature reviewed...
January 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29325248/-survival-of-patients-with-primary-central-nervous-system-diffuse-large-b-cell-lymphoma-impact-of-gene-aberrations-and-protein-overexpression-of-bcl-2-and-c-myc-and-selection-of-chemotherapy-regimens
#7
W J Yin, X Zhu, H Y Yang, W Y Sun, M J Wu
Objective: To investigate the impact of clinicopathological features, gene rearrangements and protein expression of bcl-6, bcl-2, C-MYC and chemotherapy regime on the prognosis of patients with primary central nervous system diffuse large B-cell lymphoma (PCNS-DLBCL). Methods: Thirty-three cases of PCNS-DLBCL diagnosed from January 2006 to December 2016 at Zhejiang Cancer Hospital were collected. The expression of CD10, bcl-6, bcl-2, MUM1 and MYC were detected by immunohistochemical staining (IHC). The presence of EB virus was detected by in situ hybridization(EBER)...
January 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29325247/-impact-of-prdm1-gene-inactivation-on-c-myc-regulation-in-diffuse-large-b-cell-lymphoma
#8
X Y Zhang, Z P Ma, W L Cui, X L Pang, R Chen, L Wang, W Zhang, X X Li
Objective: To investigate the role of PRDM1 gene inactivaion in the regulation of C-MYC in diffuse large B-cell lymphoma (DLBCL), and to explore the correlation of its immunophenotype and prognosis. Methods: 100 cases paraffin-embedded DLBCL tissues were collected from January 2009 to December 2015 at the First Affiliated Hospital of Xinjiang Medical University along with 20 cases of reactive proliferative lymph nodes as control. Immunohistochemical methods were used to detect the expression of CD20, CD10, MUM1, Ki-67, bcl-6, PRDM1/Blimp1, C-MYC and PAX5 protein...
January 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29325245/-clinical-characteristics-of-high-grade-b-cell-lymphomas-with-rearrangement-of-myc-bcl-6-and-bcl-2
#9
J Y Gong, Y Z Zhang, J D Zhang, W Zhang, J Q Li, K Ru, E B Liu
Objective: To investigate the clinicopathologic features of patients with high-grade B-cell lymphomas (HGBL) that have rearrangements of MYC, bcl-6 and bcl-2. Methods: One hundred and fifty-eight B-cell lymphomas patients from Institute of Hematology and Blood Diseases Hospital from January 2016 to April 2017 were detected by fluorescence in situ hybridization (FISH) with double color split-apart probes. Results: Among 158 B-cell lymphomas, 3 cases with MYC, bcl-2 and bcl-6 rearrangements were identified, 1 of which also had CCND1/IgH translocation...
January 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29296858/successful-desensitization-with-proteasome-inhibition-and-costimulation-blockade-in-sensitized-nonhuman-primates
#10
Jean Kwun, Christopher Burghuber, Miriam Manook, Brian Ezekian, Jaeberm Park, Janghoon Yoon, John S Yi, Neal Iwakoshi, Adriana Gibby, Jung Joo Hong, Alton B Farris, Allan D Kirk, Stuart J Knechtle
The detrimental effects of donor-directed antibodies in sensitized transplant patients remain a difficult immunologic barrier to successful organ transplantation. Antibody removal is often followed by rebound. Proteasome inhibitors (PIs) deplete antibody-producing plasma cells (PCs) but have shown marginal benefit for desensitization. In an allosensitized nonhuman primate (NHP) model, we observed increased germinal center (GC) formation after PI monotherapy, suggesting a compensatory PC repopulation mediated via GC activation...
November 14, 2017: Blood Advances
https://www.readbyqxmd.com/read/29288900/increased-pd-1-cd154-tfh-cells-are-possibly-the-most-important-functional-subset-of-pd-1-t-follicular-helper-cells-in-adult-patients-with-minimal-change-disease
#11
Tao Li, Yunpeng Shi, Weixia Sun, Haifeng Wang, Quan Wang, Yanfang Jiang
T follicular helper (Tfh) cells, especially programmed cell death protein 1 (PD-1) + Tfh cells, exert important functions in the normal immune response. The purpose of this study was to determine the frequency of different subsets of PD-1 + Tfh cells and their functional effects in adult patients with minimal change disease (MCD). The frequencies of circulating PD-1 + , PD-1 + CD154 + , and PD-1 + interleukin (IL)-21 + Tfh cells, and CD38 + CD19 + and CD38 + CD19 + CD40 + B cells, as well as serum IL-2, IL-4, IL-17A, IL-6, IL-21, and interferon (IFN)-γ were significantly increased in the MCD patients compared with the healthy controls (HCs) (P < 0...
February 2018: Molecular Immunology
https://www.readbyqxmd.com/read/29285142/increased-levels-of-ccr7-lo-pd-1-hi-cxcr5-cd4-t-cells-and-associated-factors-bcl-6-cxcr5-il-21-and-il-6-contribute-to-repeated-implantation-failure
#12
Qiaoqiao Gong, Yuejie Zhu, Nannan Pang, Haiquan Ai, Xiaoyun Gong, Xiaolin La, Jianbing Ding
In vitro fertilization-embryo transfer (IVF-ET) can be used by infertile couples to assist with reproduction; however, failure of the embryo to implant into the endometrial lining results in failure of the IVF treatment. The present study investigated the expression of chemokine receptor 7 (CCR7)(lo) programmed death-1(PD-1)(hi) chemokine receptor type 5 (CXCR5)+ cluster of differentiation 4 (CD4)+ T cells and associated factors in patients with repeated implantation failure (RIF). A total of 30 females with RIF and 30 healthy females were enrolled in the current study...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29282308/b-cell-intrinsic-myd88-signaling-promotes-initial-cell-proliferation-and-differentiation-to-enhance-the-germinal-center-response-to-a-virus-like-particle
#13
Meijie Tian, Zhaolin Hua, Sheng Hong, Zhimin Zhang, Can Liu, Lin Lin, Jiaorong Chen, Wei Zhang, Xuyu Zhou, Fuping Zhang, Anthony L DeFranco, Baidong Hou
Although TLR signaling in B cells has been implicated in the germinal center (GC) responses during viral infections and autoimmune diseases, the underlying mechanism is unclear. Bacterial phage Qβ-derived virus-like particle (Qβ-VLP) contains TLR ligands, which can enhance Qβ-VLP-induced Ab response, including GC response, through TLR/MyD88 signaling in B cells. In this study, by examining Ag-specific B cell response to Qβ-VLP, we found that lack of B cell MyD88 from the beginning of the immune response led to a more severe defect in the GC scale than abolishing MyD88 at later time points of the immune response...
December 27, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29282102/lncrna-ak023391-promotes-tumorigenesis-and-invasion-of-gastric-cancer-through-activation-of-the-pi3k-akt-signaling-pathway
#14
Yanxia Huang, Jing Zhang, Lidan Hou, Ge Wang, Hui Liu, Rui Zhang, Xiaoyu Chen, Jinshui Zhu
BACKGROUND: Patients with gastric cancer commonly have a poor prognosis, owing to its invasiveness and distant metastasis. Recent studies have confirmed the pivotal role of long non-coding RNAs (lncRNAs) in tumorigenesis and the progression of malignant tumors, including gastric cancer. However, little is known about the molecular mechanism by which lncRNA AK023391 contributes to gastric cancer. METHODS: A lncRNA microarray was used to identify the differentially expressed lncRNA AK023391 in gastric cancer and adjacent normal tissues...
December 28, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29245266/gastric-burkitt-lymphoma-a-case-report-and-literature-review
#15
Simona Gurzu, Tivadar Bara, Tivadar Jr Bara, Mihai Turcu, Ciprian Valentin Mardare, Ioan Jung
RATIONALE: Burkitt lymphoma (BL) is an endemic tumor in Africa but rare sporadic cases are diagnosed in Europe. PATIENT CONCERNS: A 60-year-old woman was hospitalized with fulminant hematemesis and a history of recurring melena. DIAGNOSES: The upper gastrointestinal endoscopy revealed a tumor of the antrum. INTERVENTIONS: Emergency gastrectomy was performed. OUTCOMES: Gross findings revealed an ulcerated tumor with elevated margins and several perigastric and extragastric lymph nodes...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29186193/rig-i-like-receptor-activation-by-dengue-virus-drives-follicular-t-helper-cell-formation-and-antibody-production
#16
Joris K Sprokholt, Tanja M Kaptein, John L van Hamme, Ronald J Overmars, Sonja I Gringhuis, Teunis B H Geijtenbeek
Follicular T helper cells (TFH) are fundamental in orchestrating effective antibody-mediated responses critical for immunity against viral infections and effective vaccines. However, it is unclear how virus infection leads to TFH induction. We here show that dengue virus (DENV) infection of human dendritic cells (DCs) drives TFH formation via crosstalk of RIG-I-like receptor (RLR) RIG-I and MDA5 with type I Interferon (IFN) signaling. DENV infection leads to RLR-dependent IKKε activation, which phosphorylates IFNα/β receptor-induced STAT1 to drive IL-27 production via the transcriptional complex ISGF3...
November 29, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29127150/cutting-edge-c-maf-is-required-for-regulatory-t-cells-to-adopt-ror%C3%AE-t-and-follicular-phenotypes
#17
Joshua D Wheaton, Chen-Hao Yeh, Maria Ciofani
Regulatory T cells (Tregs) adopt specialized phenotypes defined by coexpression of lineage-defining transcription factors, such as RORγt, Bcl-6, or PPARγ, alongside Foxp3. These Treg subsets have unique tissue distributions and diverse roles in maintaining organismal homeostasis. However, despite extensive functional characterization, the factors driving Treg specialization are largely unknown. In this article, we show that c-Maf is a critical transcription factor regulating this process in mice, essential for generation of both RORγt(+) Tregs and T follicular regulatory cells, but not for adipose-resident Tregs...
November 10, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29115129/time-gated-luminescence-imaging-of-immunolabeled-human-tissues
#18
Ting Chen, Rui Hong, Darren Magda, Christopher Bieniarz, Larry Morrison, Lawrence W Miller
Multiplexed immunofluorescence imaging of formalin-fixed, paraffin-embedded tissues is a powerful tool for investigating proteomic profiles and diagnosing disease. However, conventional immunofluorescence with organic dyes is limited in the number of colors that can be simultaneously visualized, is made less sensitive by tissue autofluorescence background, and is usually incompatible with commonly used hematoxylin and eosin staining. Herein, we demonstrate the comparative advantages of using time-gated luminescence microscopy in combination with an emissive Tb(III) complex, Lumi4-Tb, for tissue imaging in terms of sensitivity, multiplexing potential, and compatibility with common immunohistochemistry protocols...
November 15, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29113178/immunohistochemical-profile-and-prognostic-significance-in-primary-central-nervous-system-lymphoma-analysis-of-89-cases
#19
Jing Liu, Yaming Wang, Yuantao Liu, Zhe Liu, Qu Cui, Nan Ji, Shengjun Sun, Bingxu Wang, Yajie Wang, Xuefei Sun, Yuanbo Liu
The majority of primary central nervous system lymphomas (PCNSLs) are diffuse large B cell lymphoma, characterized by poor prognosis. In the present study, the expression of cluster of differentiation (CD)10, B cell lymphoma (BCL)-6, multiple myeloma-1 (MUM-1), BCL-2, CD138 and Ki-67 was analyzed by immunohistochemistry in 89 Chinese PCNSL cases, and the potential prognostic significance was evaluated. CD10, BCL-6, MUM-1, BCL-2 and CD138 were positive in 16.9 (15/89), 51.7 (46/89), 92.1 (82/89), 73.3 (63/86) and 0% (0/65) of all cases, respectively...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29081196/-prognostic-significance-of-proteins-expression-by-immunohistochemical-method-in-diffuse-large-b-cell-lymphoma
#20
W J Yu, L H Cao, J H Wang, Z M Wang, W B Qian, H Y Tong, H T Meng, W Y Mai, L P Mao, J J Qian, J Jin
Objective: To analyze the prognostic significance of TP53, Bcl-2, Bcl-6, Myc proteins expression by immunohistochemical method (IHC) in diffuse large B cell Lymphoma (DLBCL) . Methods: Clinical and pathologic data of 223 patients with DLBCL hospitalized in Zhejiang First Hospital from March 2009 to June 2015 were retrospectively analyzed. Results: The 223 cases, a median age of 56 years old with a male predominance, had shown a 39.0% of TP53 positive expression, 38.6% of Myc, 69.1% of Bcl-2, 56.5% of Bcl-6, and 22...
September 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
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