Bulk RNA-Sequencing of mouse large intestinal lymphatics (capillaries and collectors)
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE199082 | GEO | 2022/06/21
REPOSITORIES: GEO
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Project description:Bulk RNA-Sequencing of mouse large intestinal lymphatics (capillaries and collectors)
| PRJNA818309 | ENA
Project description:Tissue lymphatics are crucial for fluid homeostasis and immunosurveillance. We asked whether the lymphatics are adapted to the organ in which they reside, such as along the gut. Duodenal lymphatic capillaries (lacteals) displayed the mot discontinuous tight junction composition versus lacteals at other sites, resulting in a dependence on duodenal lacteals for rapid dietary lipid uptake. Duodenal helminths abrogated these features. RNAseq of LECs and the mucosa along the intestine revealed that LEC transcriptomes matched the functional profile of the local mucosa. Helminth infection reverses key duodenal signatures like lipid metabolism and immune activation, instead triggering lymphangiogenic and mucosal antimicrobial responses. We identified a putative VEGFR2/3 signaling gradient that may explain differences in tight junction along the small intestine at homeostasis. Inflammation-induced lymphangiogenesis and decreased fat exposure likely underlie duodenal lymphatic impermeability upon helminth infection, while microbial depletion acted additively on lymphatic restructuring. Our study provides molecular insights into lymphatic function along the intestine and stages lymphatic permeability as subject to dynamic regulation by environmental queues.
2024-07-08 | GSE271712 | GEO
Project description:Our study has identified a novel regulatory role of cardiac lymphatics in heart development, particularly in cardiomyocyte proliferation and survival. To investigate the molecular basis of this cardiac lymphatics-dependent effects, We then performed RNA sequencing (RNA-seq) of the ventricular portions of E17.5 controls and Prox1 conditional nulls (embryos devoid of cardiac lymphatic development). Gene set expression analysis (GSEA) revealed that in Prox1 conditional null hearts, genes and pathways related to cell cycle were greatly reduced; instead, expression of genes and pathways involved in apoptosis were enriched. Our study has identified a novel regulatory role of cardiac lymphatics in heart development, particularly in cardiomyocyte proliferation and survival. To investigate the molecular basis of this cardiac lymphatics-dependent effects, We then performed RNA sequencing (RNA-seq) of the ventricular portions of E17.5 controls and Prox1 conditional nulls (embryos devoid of cardiac lymphatic development). Gene set expression analysis (GSEA) revealed that in Prox1 conditional null hearts, genes and pathways related to cell cycle were greatly reduced; instead, expression of genes and pathways involved in apoptosis were enriched.
2020-09-25 | GSE158504 | GEO
Project description:Tissue lymphatics are crucial for fluid homeostasis and immunosurveillance. We asked whether the lymphatics are adapted to the organ in which they reside, such as along the gut. Duodenal lymphatic capillaries (lacteals) displayed the mot discontinuous tight junction composition versus lacteals at other sites, resulting in a dependence on duodenal lacteals for rapid dietary lipid uptake. Duodenal helminths abrogated these features. RNAseq of LECs and the mucosa along the intestine revealed that LEC transcriptomes matched the functional profile of the local mucosa. Helminth infection reverses key duodenal signatures like lipid metabolism and immune activation, instead triggering lymphangiogenic and mucosal antimicrobial responses. We identified a putative VEGFR2/3 signaling gradient that may explain differences in tight junction along the small intestine at homeostasis. Inflammation-induced lymphangiogenesis and decreased fat exposure likely underlie duodenal lymphatic impermeability upon helminth infection, while microbial depletion acted additively on lymphatic restructuring. Our study provides molecular insights into lymphatic function along the intestine and stages lymphatic permeability as subject to dynamic regulation by environmental queues.
2024-07-08 | GSE271711 | GEO
Project description:Major depressive disorder is one of the most common mental health conditions. Meningeal lymphatics are essential for drainage of molecules in the cerebrospinal fluid to the peripheral immune system. Their potential role in depression-like behaviour has not been investigated. Here, we show in mice, sub-chronic variable stress as a model of depression-like behaviour impairs meningeal lymphatics in females but not in males. Manipulations of meningeal lymphatics regulate the sex difference in the susceptibility to stress-induced depression- and anxiety-like behaviors in mice, as well as alterations of the medial prefrontal cortex and the ventral tegmental area, brain regions critical for emotional regulation. Together, our findings suggest meningeal lymphatic impairment contributes to susceptibility to stress in mice, and that restoration of the meningeal lymphatics might have potential for modulation of depression-like behaviour.
2022-07-05 | GSE201368 | GEO
Project description:Sphingosine 1-phosphate (S1P) influences T cell migration into and out of secondary lymphoid organs; however, its mechanism of action remains uncertain. Our previous research shows that agonism of the S1P receptor S1P1 inhibits the egress of T lymphocytes from the peripheral tissues into afferent lymphatics. To better define the mechanism of inhibition, we developed an in vitro model to characterize T cell transendothelial migration across lymphatics. Two commercially available endothelial cell lines (MS-1 and SVEC4-10) were characterized by flow cytometry, real time RT-PCR, and Affymetrix Gene Array. These cell lines were grown to confluent monolayers in transwell systems, on either the upper or lower surface of the transwell insert. T cells were isolated from the spleens of (C57BL/6 x C3H/HeJ)F1, S1P1 KO, or S1P1 KO littermate controls, and either treated with the S1P receptor modulator FTY720 or left untreated. Cells were migrated to chemokines (CCL19 or CCL21) for 4 hours, and migration quantified. Flow cytometry, RT-PCR, and array results identified MS-1 as a blood vascular endothelial cell line, expressing high levels of CD31, CD34, and ICAM-1 as well as other endothelial cell markers; while SVEC4-10 closely resemble a lymphatic phenotype, expressing LYVE-1, VEGFR-3, and podoplanin. T cells efficiently migrate across MS-1, whether grown on the upper or lower surface; whereas migration across SVEC4-10 only occurs when cells are grown on the lower surface of the transwell (iSVEC), recapitulating basal (abluminal) to apical (luminal) migration that occurs in vivo. FTY720 inhibits T cell migration across iSVEC, but not across MS-1. Inhibition is due to drug effects only on T cells but not endothelial cells. S1P1 KO T cells treated with FTY720 are not inhibited in their migration across the iSVEC line, showing that S1P1 stimulation is required for migration inhibition. The in vitro model developed here is the first to use endothelial cell lines to analyze the regulation of T cell migration across lymphatic endothelium. The results show there is directional control of T cell migration across lymphatic cells, such that T cells only migrate from a basal to apical direction. Agonism of S1P1 specifically inhibits migration, while absence of the receptor does not. These findings have important implications for the use of S1P1 agonists in transplantation, as inhibition of cell entry into afferent lymphatics and lymph nodes could impede the development of graft rejection. We used microarrays to detail the global gene expression of these two cell lines in order to beter determine their phenotype as blood vascular or lymphatic endothelial cell line for use in our newly-developed in vitro model. Experiment Overall Design: MS-1 or SVEC4-10 endothelial cell lines were grown in culture flasks for 3-5 days in standard culture medium (see protocol below) until reaching confluence. Cells were then gently dissociated from flask and cells were placed in Trizol reagent for RNA isolation.
2008-06-16 | E-GEOD-9237 | biostudies-arrayexpress
Project description:Afferent lymphatic vessels bring antigens and diverse populations of leukocytes to draining lymph nodes, but efferent lymphatics allow only lymphocytes to leave the nodes. Despite fundamental importance of afferent vs. efferent lymphatics in immune response and cancer spread, molecular characteristics of these different arms of the lymphatic vasculature are largely unknown. In this work we report marked transcriptional differences between afferent and efferent lymphatic endothelial cells. Mouse inguinal, axillary, and brachial lymphnodes were collected and cryomolds prepared for laser-capture microdissection. Frozen sections were stained with various cell marker antibodies and micro-dissection performed to collect lymphatic endothelial cells. Total RNA was extracted from the cells and used in microarray analysis. Alternatively, popliteal, caudal, lumbar, inguinal, mesenteric, renal, axillary, brachial, deep and superficial cervical LN were enzymatically digested, the cells stained, and FACs sorted before RNA isolation.
2016-08-24 | E-GEOD-68371 | biostudies-arrayexpress
Project description:The mammalian heart contains multiple cell types that appear progressively during embryonic development. Advances in determining cardiac lineage diversification has often been limited by the unreliability of genetic tracers. Here we combine clonal analysis, genetic lineage tracing, tissue transplantation and mutant characterization to investigate the lineage relationships between epicardium, arterial mesothelial cells (AMCs) and the coronary vasculature. We report a contribution of the second heart field (SHF) to a vasculogenic niche composed of AMCs and sub-mesothelial cells at the base of the pulmonary artery. Sub-mesothelial cells from this niche differentiate into lymphatic endothelial cells and, in close association with AMC-derived cells, contribute to, and are essential for the development of ventral cardiac lymphatics. In addition, regionalized epicardial/mesothelial retinoic acid signaling regulates lymphangiogenesis, contributing to the niche properties. These results uncover a SHF vasculogenic contribution to coronary lymphatic development through a local niche at the base of the great arteries.
2020-01-09 | GSE136750 | GEO
Project description:The lymphatic vasculature is critical for lung function, but defects in lymphatic functionin the pathogenesis of lung disease is understudied. To further assess the contribution of lymphatics to the pathogenesis of lung emphysema we used a mouse model of cigarette smoke (CS)-induced emphysema, and analyzed lung lymphatics using immunohistochemistry, functional assays, and confocal microscopy. Additionally, we further harvested thoracic lymph from CS-exposed mice for proteomic analysis. In this presented section of our research, we highlight the label free quantitative DIA proteomics approaches used to profile the proteomic and peptidomics changes in the lymph from cigarette smoke (CS)-mice as compared with the lymph proteome from mice exposed to room air. Label free quantitative DIA proteomics analysis of lymph confirmed upregulation of coagulation and inflammatory pathways in the lymphatics of CS-exposed mice compared to control mice.
2022-05-10 | PXD031413 | Pride
Project description:Recent studies have suggested that promoting lymphangiogenesis enhances cardiac repair following injury, but it is unknown whether lymphangiogenesis is required for cardiac regeneration. Here, we describe the anatomical distribution, regulation and function of the cardiac lymphatic network in a highly regenerative zebrafish model system using transgenic reporter lines and loss-of-function approaches.To understand the transcriptional profile of the model, we performed RNA-seq on cardiac ventricles from control and mutant (vegfc(hy-/-);vegfd(-/-)) ventricles. Overall, vegfc(hy-/-;vegfd-/-) mutant ventricles were characterized by an up-regulation of pathways related to sphingolipid and phospholipid metabolism, translation, protein maturation and nonsense mediated decay compared to control hearts. Our findings suggest that lymphatics vasculature play a role in lipid transport and when lymphatic function is compromised in vegfch(y-/-;vegfd-/-) mutant, there are consequences to sphingolipid and phospholipid metabolism. Vegfc(hy-/-;vegfd-/-) mutant ventricles were not characterized by an enrichment of genes pathways implicated in pathological hypertrophy. This finding suggests that the absence of cardiac lymphatics induced a physiological rather than pathological cardiac hypertrophy.
2019-09-03 | GSE133130 | GEO