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Gene expression profile at single cell level of stromal cells from fresh and cryopreserved tonsils and lymph node

ABSTRACT: Gene expression profile at single cell level of stromal cells from fresh and cryopreserved tonsils and lymph node

PROVIDER: PRJNA932017 | ENA |

REPOSITORIES: ENA

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Gene expression profile at single cell level of stromal cells from fresh and cryopreserved tonsils and lymph node

Project description:Non-hematopoietic lymph node stromal cells (LNSCs) regulate lymphocyte trafficking, survival, and function for key roles in host defense, autoimmunity, alloimmunity, and lymphoproliferative disorders. However, study of LNSCs in human diseases is complicated by a dependence on viable lymphoid tissues, which are most often excised prior to establishment of a specific diagnosis. Here, we demonstrate that cryopreservation can be used to bank lymphoid tissue for the study of LNSCs in human disease. Using human tonsils, lymphoid tissue fragments were cryopreserved for subsequent enzymatic digestion and recovery of viable non-hematopoietic cells. Flow cytometry and single-cell transcriptomics identified comparable proportions of LNSC cell types in fresh and cryopreserved tissue. Moreover, cryopreservation had little effect on transcriptional profiles, which showed significant overlap between tonsils and lymph nodes. The presence and spatial distribution of transcriptionally defined cell types was confirmed by in situ analyses. Our broadly applicable approach promises to greatly enable research into the roles of LNSC in human disease.

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Proteomic analysis of rabbit fresh and cryopreserved semen (seminal plasma)

Project description:Cryoinjury and protein changes are a consequence of cryopreservation and may have a negative impact on sperm quality regarding motility, viability and fertilizing ability. However, potential proteomic changes in rabbit semen throughout the cryopreservation process have never been investigated previously. The aim of the present study was to compare the whole proteome of fresh and cryopreserved rabbit extracellular fluid of semen. Comparative analysis and identification of proteins were performed using 2-dimensional difference in-gel electrophoresis (2D-DIGE) coupled with matrix-assisted laser desorption/ionization mass (MALDI TOF/TOF) spectrometry. We found that 28 proteins differed in abundance between fresh and frozen extracellular fluid.

2022-10-13 | PXD034853 | Pride

Matrix Remodelling during Lymph Node Expansion

Project description:In this study we focussed our investigations on ECM remodelling by FRCs during lymph node (LN) expansion, and the interconnection between the cellular and ECM components of the conduit network. We demonstrate a loss of ECM components of the conduit during acute LN expansion

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Gene expression profiling of human fresh and cryopreserved sperm

Project description:Gene expression profiling of human fresh and cryopreserved sperm

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Proteomic analysis of rabbit fresh and cryopreserved semen (spermatozoa)

Project description:Cryoinjury and protein changes are a consequence of cryopreservation and may have a negative impact on sperm quality regarding motility, viability and fertilizing ability. However, potential proteomic changes in rabbit semen throughout the cryopreservation process have never been investigated previously. The aim of the present study was to compare the whole proteome of fresh and cryopreserved rabbit spermatozoa. Comparative analysis and identification of proteins were performed using 2-dimensional difference in-gel electrophoresis (2D-DIGE) coupled with matrix-assisted laser desorption/ionization mass (MALDI TOF/TOF) spectrometry. We found that 108 proteins differed in abundance in spermatozoa between fresh and frozen semen. Most of these proteins was involved in pathways related to energy metabolism and protein quality control under stress conditions, reproductive processes and mechanisms of cell death/survival regulation, resulting in a significant decrease of motility and viability of post-thawing rabbit sperm and its potential fertilizing ability.

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Familial Blood and Lymph Node Cancers

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Comparison of lymph node negative (N0) and lymph node metastasis (N+) head and neck squamous-cell carcinomas (HNSCC)

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Gene expression signatures for B cells from tumor draining lymph node and normal lymph node

Project description:To determine the different gene signatures between B lymphocytes from tumor draining lymph node (DLN) and normal lymph node (NLN), we have employed gene microarray as a discovery platform to identify gene signatures of tumor-educated B cells in DLN from tumor-bearing mice, taking NLN from normal mice as a control. We subcutaneously inoculated Balb/c mice with breast cancer cell line 4T1. Two weeks later, DLN was harvest and B cells were purified as descript in “treatment protocol”. From gene microarray, we found that B cells in DLN showed quite different transcript profiles from that in NLN.

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Role of Eif4g3 and Deaf1 in Lymph node

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