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Lymph nodes with follicular lymphoma or reactive hyperplasia

ABSTRACT: Comparison of gene expression profiles of follicular lymphoma vs. reactive lymph nodes.

ORGANISM(S): Homo sapiens

PROVIDER: GSE14214 | GEO | 2011/09/27

SECONDARY ACCESSION(S): PRJNA111339

REPOSITORIES: GEO

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Lymph nodes with follicular lymphoma or reactive hyperplasia

Project description:Comparison of gene expression profiles of follicular lymphoma vs. reactive lymph nodes. 8 cases of follicular lymphoma; 5 cases of reactive lymph nodes.

2011-09-26 | E-GEOD-14214 | biostudies-arrayexpress

Transcription Profiles of Regulatory T Cells in Follicular Lymphoma Lymph Nodes, Normal Lymph Nodes and Reactive Lymph Nodes

Project description:We have previously shown that Tregs infiltrating follicular lymphoma lymph nodes (FLN) are quantitatively and qualitatively different than those infiltrating normal and reactive nodes (NLN, RLN, respectively). To gain insight into how such Treg populations differ, we performed RNA sequence (RNAseq) analyses on flow sorted Tregs from all three sources. We identify several molecules that could contribute to the observed increased suppressive capacity of FLN tregs, including upregulation of CTLA-4, IL-10, and GITR, all confirmed by protein expression. In addition, we identify, and confirm functionally, a novel mechanism by which Tregs target to and accumulate within a human tumor microenvironment, through the down regulation of S1PR1, SELL (L-selectin) and CCR7, potentially resulting in greater lymph node retention. In addition we identify and confirm functionally the upregulation of CXCR5, CXCL13 and IL-16 demonstrating the unique ability of the follicular derived Tregs to localize and accumulate within not only the malignant lymph node, but also localize and accumulate within the malignant B cell follicle itself. Such findings offer significant new insights into how FLN Tregs may contribute to the biology of follicular lymphoma and identify several novel therapeutic targets.

2016-05-26 | GSE74102 | GEO

Expression data of human CD19pos B lymphocytes (B) and CD19negCD22neg non-B cells (ENV) from non tumoral reactive lymph nodes (RLN), tonsils (TONS) or follicular lymphoma (FL)

Project description:GEP on Affymetrix U133+2.0 microarrays was performed on ex vivo CD19+ B lymphocytes or CD19-CD22- fractions from reactive or FL lymph nodes or normal tonsils.

2019-05-27 | GSE107367 | GEO

Expression data of human stromal cells isolated from Follicular lymphoma (FL) or non-malignant reactive (RLN) lymph nodes

Project description:Expression data of human stromal cells isolated from Follicular lymphoma (FL) or non-malignant reactive (RLN) lymph nodes

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Expression data from human lymphoma endothelium and reactive lymph node-derived endothelium

Project description:Angiogenesis plays a key role in tumor metastasis. Many genes may act in this process including formation of vessels, immune evasion,etc. Different gene expression profiles between lymphoma endothelium cells and reactive lymph node-derived endothelium cells may uncover these genes. And intensive mechanism researches on such key genes may explain the mechanisim of tumor-specific angiogenesis and help to explore effective treatment strategies to prevent/reverse tumor metastasis. We use microarrays to detail gene expression profiles of human lymphoma endothelium and reactive lymph node-derived endothelium. Lymph nodes were taken from surgery samples of cases pathologically diagnosed DLBCL (diffuse large B-cell lymphoma), PTL (peripheral T cell lymphoma) and reactive lymph nodes. The pure endothelium cells were isolated by LCM after immunohistochemical staining of CD34. We found Tim-3 was preferentially expressed on lymphoma-derived ECs via different expression profiles between lymphoma ECs and reactive lymph node-derived ECs. Intensive researches were carried out on Tim-3-expressing -ECs and we found that Tim-3 -expressing-Ecs may play important role on EC-mediated tumor evasion.

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cDNA microarray assay of lymph node biopsies diagnosed as lymphoma or as reactive tissue

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cDNA microarray assay of lymph node biopsies diagnosed as lymphoma or as reactive tissue

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