| Mouse Model of Reversible Intestinal Inflammation
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Author:
Date:
2017-03-20
[Abstract] Current therapies to treat inflammatory bowel disease by dampening excessive inflammatory immune responses have had limited success (Reinisch et al., 2011; Rutgeerts et al., 2005; Sandborn et al., 2012). To develop new therapeutic interventions, there is a need for better understanding of the mechanisms that are operative during mucosal healing (Pineton de Chambrun et al., 2010). To this end, a reversible model of colitis was developed in which colitis induced by adoptive transfer of naïve CD4+ CD45RBhi T cells in lymphopenic mice can be reversed through depletion of colitogenic CD4+ T cells (Brasseit et al., 2016).
[摘要] 目前通过抑制过度炎症免疫应答治疗炎症性肠病的治疗方法取得了有限的成功（Reinisch等人，2011; Rutgeerts等人，2005; Sandborn等人[ et al。，2012）。为了开发新的治疗干预措施，需要更好地了解粘膜愈合期间手术的机制（Pineton de Chambrun等，2010）。为此，开发了一种可逆模型的结肠炎，其中通过淋巴细胞小鼠中过早转移原始CD4 + / CD40RB T细胞诱导的结肠炎可以通过消除结肠发生CD4 + T细胞（Brasseit等，2016）。
背景随着发展旨在重现人类疾病的动物模型，我们对肠道炎症性肠疾病（IBD）的发病机制的理解已经大大改善（Khanna等人）。 ，2014）。尽管鉴定了广泛的免疫学目标，目前的治疗方法在治疗IBD方面取得的成功有限，而且有关知识可用于建立长期缓解和相关粘膜愈合时引起的机制（D'Haens >等，，2014）。到目前为止，一个主要的限制是缺乏动物模型，其中可以在具有既定疾病的动物中可再现地诱导缓解。在感染引起肠道炎症的模型中，促炎和抗炎机制可以同时运作，这意味着在解决炎症期间解剖不同免疫途径的作用可能是一个挑战（Endt等人。 ，2010; ...
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| In vitro Assay for Dendritic Spine Retraction of Hippocampal Neurons with Sparse Labeling
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Author:
Date:
2016-09-20
[Abstract] Dendritic spines are the post-synaptic structures that play a central role in excitatory synaptic transmission. Developmental spinogenesis relies on a variety of stimuli such as those derived from cell-cell communication and their downstream signaling. Here, we describe an in vitro assay of dendritic spine retraction using hippocampal slice culture, in which individual neurons are sparsely and brightly labeled by the Supernova method, for the study of molecular mechanisms of spine development.
[摘要] 树突状棘是突触后结构，在兴奋性突触传播中起重要作用。 发育性的发生依赖于各种刺激物，如来自细胞 - 细胞通讯及其下游信号传导的刺激。 在这里，我们描述了使用海马片段培养的树突状脊柱退缩的体外测定，其中单个神经元被Supernova方法稀疏和明亮地标记，用于研究脊柱发育的分子机制。
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| Dictyostelium Cultivation, Transfection, Microscopy and Fractionation
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Author:
Date:
2015-06-05
[Abstract] The real time visualisation of fluorescently tagged proteins in live cells using ever more sophisticated microscopes has greatly increased our understanding of the dynamics of key proteins during fundamental physiological processes such as cell locomotion, chemotaxis, cell division and membrane trafficking. In addition the fractionation of cells and isolation of organelles or known compartments can often verify any subcellular localisation and the use of tagged proteins as bait for the immunoprecipitation of material from cell fractions can identify specific binding partners and multiprotein complexes thereby helping assign a function to the tagged protein. We have successfully applied these techniques to the Dictyostelium discoideum protein TSPOON that is part of an ancient ...
[摘要] 使用更复杂的显微镜，活细胞中荧光标记的蛋白质的实时可视化大大增加了我们对基本生理过程如细胞运动，趋化性，细胞分裂和膜运输过程中关键蛋白质动力学的了解。此外，细胞的分级和分离细胞器或已知的隔室通常可以验证任何亚细胞定位，并且使用标记的蛋白质作为诱饵用于来自细胞部分的物质的免疫沉淀可以鉴定特异性结合配偶体和多蛋白复合物，从而有助于赋予功能标记蛋白。我们已经成功地将这些技术应用于作为古代异构六聚体膜转运复合物的一部分的盘基网柄菌discoideum蛋白TSPOON（Hirst等，2013）。 ...
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