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Genome sequences published outside of Standards in Genomic Sciences, July - October 2012.

ABSTRACT: The purpose of this table is to provide the community with a citable record of publications of ongoing genome sequencing projects that have led to a publication in the scientific literature. While our goal is to make the list complete, there is no guarantee that we may have omitted one or more publications appearing in this time frame. Readers and authors who wish to have publications added to subsequent versions of this list are invited to provide the bibliographic data for such references to the SIGS editorial office.

SUBMITTER: Nelson OW

PROVIDER: S-EPMC3570808 | biostudies-literature | 2012 Oct

REPOSITORIES: biostudies-literature

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Project description:BACKGROUND: An excessive immune-mediated inflammation is associated with cardiac dysfunction and poor clinical outcomes after myocardial infarction (MI). However, the precise regulatory mechanism to control the inflammatory response and subsequent tissue repair following MI is unclear. METHODS AND RESULTS: Bone-marrow (BM) cells from CD11c-diphtheria toxin receptor/GFP transgenic mice were transplanted into lethally irradiated wild-type (WT) recipient mice. After reconstitution of BM-derived cells, the recipient mice were treated with either diphtheria toxin (DC ablation) or vehicle (control), and MI was created by left coronary ligation. CD11c+ GFP+ DCs expressing CD11b and MHC class II were recruited into the heart, peaking on day 7 after MI in control group. Mice with DC ablation for 7 days showed deteriorated left ventricular (LV) function and remodeling. The DC-ablated group demonstrated enhanced and sustained expression of inflammatory cytokines, prolonged extracellular matrix degradation associated with a high level of matrix metalloproteinase-9 activity, and diminished expression level of interleukin (IL)-10 and endothelial cell proliferation post-MI compared with control group. In vivo and in vitro analyses revealed that DC-ablated infarcts had an enhanced capacity of monocyte/macrophage recruitment. Among these cells, augmented infiltration of proinflammatory Ly6Chigh monocytes and F4/80+ CD206 M1 macrophages and, conversely, impaired recruitment of anti-inflammatory Ly6Clow monocytes and F4/80+ CD206+ M2 macrophages in the infarcted myocardium were identified in DC-ablated group than in control group. Flow cytometric analysis for inflammatory cells extracted from infarcted tissue revealed that CD11c+ DC is one of the major sources of IL-10. Adoptive transfer of BM-derived DCs from WT, but not IL-10-deficient mice, abrogated the adverse effects of DC depletion on inflammatory response and LV remodeling after MI. CONCLUSION: DC could be a potent immunoprotective regulator during the postinfarction healing process, via controlling monocyte/macrophage homeostasis through IL-10 secretion.

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Genome sequences published outside of Standards in Genomic Sciences, July - October 2012.

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