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Optimized Tissue Clearing Minimizes Distortion and Destruction During Tissue Delipidation
Neuropathology and Applied Neurobiology ( IF 4.0 ) Pub Date : 2020-12-02 , DOI: 10.1111/nan.12673
Krit Lee 1 , Hei Ming Lai 2, 3 , Maja Hoejvang Soerensen 1 , Edward Sai-Kam Hui 4 , Victor Wan-San Ma 5 , William Chi-Shing Cho 5 , Yuen-Shan Ho 6 , Raymond Chuen-Chung Chang 1, 7
Affiliation  

AIMS A variety of tissue clearing techniques have been developed to render intact tissue transparent. For thicker samples, additional partial tissue delipidation is required before immersion into the final refractive index (RI)-matching solution, which alone is often inadequate to achieve full tissue transparency. However, it is difficult to determine asufficient degree of tissue delipidation, excess of which can result in tissue distortion and protein loss. Here, we aim to develop a clearing strategy that allows better monitoring and more precise determination of delipidation progress. METHODS We combined the detergentsodium dodecyl sulphate (SDS) with OPTIClear, a RI-matching solution, to form a strategy termed Accurate delipidation with Optimal Clearing (Accu-OptiClearing). Accu-OptiClearing allows for a better preview of the final tissue transparency achieved when immersed in OPTIClear alone just before imaging. We assessed for the changes in clearing rate, protein loss, degree of tissue distortion,and preservation of antigens. RESULTS Partial delipidation using Accu-OptiClearingaccelerated tissue clearing andbetter preserved tissue structure and antigens than delipidation with SDS alone. Despite achieving similar transparency in the final OPTIClear solution, more lipids were retained in samples cleared with Accu-OptiClearingcompared to SDS. CONCLUSIONS Combining the RI-matching solution OPTIClear with detergents, Accu-OptiClearing, can avoid excessive delipidation,leading to accelerated tissue clearing, less tissue damage and betterpreserved antigens.

中文翻译:

优化的组织清理可最大程度地减少组织脱脂过程中的变形和破坏

目的 已经开发出多种组织透明化技术来使完整的组织变得透明。对于较厚的样品,在浸入最终的折射率 (RI) 匹配溶液之前,需要进行额外的部分组织脱脂,仅此一项通常不足以实现完全的组织透明度。然而,很难确定组织脱脂的充分程度,过量会导致组织变形和蛋白质损失。在这里,我们的目标是制定一种清理策略,以便更好地监测和更精确地确定脱脂进度。方法 我们将去垢剂十二烷基硫酸钠 (SDS) 与 OPTIClear(一种 RI 匹配溶液)结合起来,形成一种名为“精确脱脂与最佳清除”(Accu-OptiClearing) 的策略。Accu-OptiClearing 可以更好地预览成像前单独浸入 OPTIClear 中时实现的最终组织透明度。我们评估了清除率、蛋白质损失、组织变形程度和抗原保存的变化。结果 与单独使用 SDS 脱脂相比,使用 Accu-OptiClearing 进行部分脱脂可加速组织透明化并更好地保存组织结构和抗原。尽管在最终的 OPTIClear 溶液中实现了类似的透明度,但与 SDS 相比,使用 Accu-OptiClearing 澄清的样品中保留了更多的脂质。结论 将 RI 匹配溶液 OPTIClear 与去垢剂 Accu-OptiClearing 结合使用,可以避免过度脱脂,从而加速组织透明化,减少组织损伤并更好地保存抗原。
更新日期:2020-12-02
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