新方法提高DNA-PAINT成像速度
作者:
小柯機器人發布時間:2019/10/8 14:45:18
德國慕尼黑大學Ralf Jungmann研究組通過優化的序列設計和緩衝液條件,將DNA-PAINT成像速度提高了一個數量級。這一研究成果在線發表於2019年10月7日的國際學術期刊《自然—方法學》。
研究人員介紹,納米形貌中的DNA點累積(DNA-PAINT)是一種相對易於實現的超解析度技術。但是,與大多數其他方法相比,圖像獲取速度較慢。
研究人員通過設計優化的DNA序列和緩衝液條件來克服此限制。研究人員用DNA摺紙在體外證明了這一方法,並使用細胞樣本在原位證明了該方法,並且在不影響圖像質量或空間解析度的前提下,實現了更快一個數量級的成像速度。現在,這種改進使DNA-PAINT適用於高通量研究。
附:英文原文
Title: An order of magnitude faster DNA-PAINT imaging by optimized sequence design and buffer conditions
Author: Florian Schueder, Johannes Stein, Florian Stehr, Alexander Auer, Bianca Sperl, Maximilian T. Strauss, Petra Schwille, Ralf Jungmann
Issue&Volume: 2019-10-07
DNA points accumulation in nanoscale topography (DNA-PAINT) is a relatively easy-to-implement super-resolution technique. However, image acquisition is slow compared to most other approaches. Here, we overcome this limitation by designing optimized DNA sequences and buffer conditions. We demonstrate our approach in vitro with DNA origami and in situ using cell samples, and achieve an order of magnitude faster imaging speeds without compromising image quality or spatial resolution. This improvement now makes DNA-PAINT applicable to high-throughput studies.
DOI: 10.1038/s41592-019-0584-7
Source: https://www.nature.com/articles/s41592-019-0584-7