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| 1 | Graphene-based nanomaterials in biosystems显示文摘Graphene-based nanomaterials have emerged as a novel type of materials with exceptional physicochemical properties and numerous applications in various areas. In this review, we summarize recent advances in studying interactions between graphene and biosystems. We first provide a brief introduction on graphene and its derivatives, and then discuss on the toxicology and biocompatibility of graphene, including the extracellular interactions between graphene and biomacromolecules, cellular studies of graphene, and in vivo toxicological effects. Next, we focus on various graphene-based practical applications in antibacterial materials, wound addressing, drug delivery, and water purification.We finally present perspectives on challenges and future developments in these exciting fields. | Na Lu Liqian Wang Min Lv Zisheng Tang Chunhai Fan | 2019 | Nano Research2019，12，2： | 8 |
| 2 | Real-time label-free analysis of the thermostability of DNA structures using GelRed显示文摘In biological systems, conformational transformations of nucleic acids play critical roles in genetic regulation. However, it remains a tricky task to design and optimize specific labeling strategies to track these changes.In this study, we exploited an intercalating fluorescent dye,GelRed, to characterize different DNA structures. We studied the correlation between fluorescence intensity and DNA structural properties. We showed that single-stranded DNAs with predicted self-folded secondary structures show much stronger fluorescence than those without such structures. For double-stranded DNAs, we observed that fluorescence intensity is positively correlated to their GCcontent. We also demonstrated that GelRed can be used to monitor DNA conformational changes upon temperature variations in real time. Based on these findings, we concluded that the fluorescence intensity of a GelRed-stained DNA structure has a good correlation with its thermostability in the form of a change in Gibbs free energy. | Ya-Ya Hao Lei Liu Lu-Hao Zhang Qiu-Ling Huang Fei Wang Jiang Li Jia-Qiang Xu Li-Hua Wang | 2018 | Nuclear Science and Techniques2018，29，10： | 0 |
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