| Transcardiac Perfusion of the Mouse for Brain Tissue Dissection and Fixation
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Author:
Date:
2021-03-05
[Abstract] Transcardiac perfusion with saline followed by 4% paraformaldehyde (PFA) is widely used to clear blood and preserve brain for immunostaining or in situ hybridization. PFA breaks into formaldehyde in solution, which cross-link protein and DNA molecules to preserve tissue and cell structure. Here we provide a step by step guide for performing this procedure in mouse.
[摘要] [摘要]经盐水灌注心内膜灌注4％多聚甲醛（PFA ）被广泛用于清除血液和保存脑部以进行免疫染色或原位杂交。PFA在溶液中分解成甲醛，甲醛使蛋白质和DNA分子交联以保留组织和细胞结构。在这里，我们提供了在鼠标中执行此过程的逐步指南。
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| Bioorthogonal Labeling and Chemoselective Functionalization of Lung Extracellular Matrix
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Author:
Date:
2021-02-20
[Abstract] Decellularized extracellular matrix (ECM) biomaterials derived from native tissues and organs are widely used for tissue engineering and wound repair. To boost their regenerative potential, ECM biomaterials can be functionalized via the immobilization of bioactive molecules. To enable ECM functionalization in a chemoselective manner, we have recently reported an effective approach for labeling native organ ECM with the click chemistry-reactive azide ligand via physiologic post-translational glycosylation. Here, using the rat lung as a model, we provide a detailed protocol for in vivo and ex vivo metabolic azide labeling of the native organ ECM using N-Azidoacetylgalactosamine-tetraacylated (Ac4GalNAz), together with procedures for decellularization and labeling characterization. Our ...
[摘要] [摘要]源自天然组织和器官的脱细胞细胞外基质（ECM）生物材料被广泛用于组织工程和伤口修复。为了增强其再生潜力，可以通过固定生物活性分子来使ECM生物材料功能化。为了使ECM以化学选择性的方式实现功能化，我们最近报告了一种有效的方法，可通过生理学上的翻译后糖基化，用点击化学反应的叠氮化物配体标记天然器官ECM 。在此，使用大鼠肺为模型，我们提供一种用于详细方案在体内和离体代谢叠氮化物使用N- Azidoacetylgalactosamine-tetraacylated天然器官ECM的标记（AC 4GalNAz），以及用于脱细胞和标记表征的程序。我们的方法可以在体内三天内或离体器官培养期间的一天之内进行特异性而稳定的ECM标记。脱细胞后，所得的ECM标记保持稳定。通过我们的方法，ECM生物材料可以用所需的炔烃修饰的生物分子（例如生长因子和糖胺聚糖）进行功能化，以用于组织工程和再生应用。
关键字：细胞外基质，脱细胞，生物正交，化学选择性功能化，点击化学，肺
[背景]细胞外基质（ECM）是由特定组织或器官的非细胞成分组成的水合网络支架，在通过其所包含的生物活性成分（例如纤维蛋白，生长）支持住宅细胞的活动中起关键作用。因子和糖胺聚糖（GAG）（Theocharis et ...
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| Transcardiac Perfusion of the Mouse for Brain Tissue Dissection and Fixation
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Author:
Date:
2021-01-05
[Abstract] Transcardiac perfusion with saline followed by 4% paraformaldehyde (PFA) is widely used to clear blood and preserve brain for immunostaining or in situ hybridization. PFA breaks into formaldehyde in solution, which cross-link protein and DNA molecules to preserve tissue and cell structure. Here we provide a step by step guide for performing this procedure in mouse.
[摘要] [摘要]经盐水灌注心内膜灌注4％多聚甲醛（PFA ）被广泛用于清除血液和保存脑部以进行免疫染色或原位杂交。PFA在溶液中分解成甲醛，甲醛使蛋白质和DNA分子交联以保留组织和细胞结构。在这里，我们提供了在鼠标中执行此过程的逐步指南。
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