Application of dual-photon fluorescence probe
A two-photon fluorescence and two-photon technology, applied in the direction of fluorescence/phosphorescence, luminescent materials, chemical instruments and methods, etc., can solve the problems of low fluorescence quantum yield, short fluorescence lifetime, weak affinity, etc., and achieve small molecular size, Good chemical/light stability, effect of reducing impact
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Embodiment 1
[0037] Embodiment 1 Molecular structure and synthetic route
[0038] A two-photon fluorescent labeling probe DLR has the following molecular structure:
[0039]
[0040] The synthetic route is:
[0041]
[0042] Wherein, intermediates 2, 3, 4, 5, and 6 were all synthesized according to the following documents:
[0043] [1] H. Huang, Q. He, H. Lin, F. Bai, Z. Sun and Q. Li, Polym. Adv. Technol., 2004, 15:84—88
[0044] [2]Huang C., Fan J., Peng X., Lin Z., Guo B., Ren A., Cui J., Sun S., J.Photochem.Photobio.A:Chem.,2008,199( 2–3):144–149
Embodiment 2
[0045] Example 2 Research on the detection process of two-photon fluorescent lipid raft probes
[0046] 2.1 Reagents and instruments
[0047] Dioleoylphosphatidylcholine (DOPC, Xi’an Ruixi Biotechnology Co., Ltd.), dipalmitoylphosphatidylcholine (DPPC, Xi’an Ruixi Biotechnology Co., Ltd.), cholesterol (cholesterol, Xi’an Ruixi Biotechnology Co., Ltd.) , sphingomyelin (sphingomyelin, Xi'an Ruixi Biotechnology Co., Ltd.), methyl-β-cyclodextrin (MβCD, Zibo Qianhui Biotechnology Co., Ltd.]).
[0048] Mira 900-F mode-locked femtosecond titanium sapphire laser (Coherent, USA)
[0049] 2.2 Experimental process
[0050] 2.1 The preparation of the two-photon fluorescent probe DLR was prepared according to the patent application CN2018104756764.
[0051] 2.2 Detection of lipid raft content in cells
[0052] When used to detect the content of lipid rafts: dissolve DLR in the working solution, then incubate the cells with the working solution containing DLR, take out the cells and obs...
Embodiment 3
[0055] Example 3 Research on the Content of Lipid Rafts by Two-photon Fluorescent Probe
[0056] 1) The culture of mouse fibroblasts was prepared according to literature (Huang C., Qu J., Qi J., Yan M., Xu G., Org. Lett., 2011, 13(6), 1462-1465) :
[0057] 2) Preparation of working solution: prepared according to the volume ratio of chloroform and methanol as 9:1;
[0058] 3) Dissolve DLR in the working solution, then incubate the mouse fibroblasts with the working solution containing DLR, take out the cells and observe the fluorescence intensity under the microscope, the cell area with higher fluorescence intensity has higher lipid raft content;
[0059] 4) After adding methyl-β-cyclodextrin (MβCD), incubate mouse fibroblasts, take out the cells and observe that the fluorescence intensity becomes weaker under the microscope, indicating that MβCD can destroy the lipid rafts in the cells, and the lipid raft content is significant decrease;
[0060] 5) After adding 50 μmol / L ...
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