Intravital imaging by simultaneous label-free autofluorescence-multiharmonic microscopy.
Intravital imaging by simultaneous label-free autofluorescence-multiharmonic microscopy.
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DOI:
10.1038/s41467-018-04470-8
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发表时间:
2018-05-29
影响因子:
16.6
通讯作者:
Boppart SA
中科院分区:
文献类型:
--
作者:
You S;Tu H;Chaney EJ;Sun Y;Zhao Y;Bower AJ;Liu YZ;Marjanovic M;Sinha S;Pu Y;Boppart SA
Intravital microscopy (IVM) emerged and matured as a powerful tool for elucidating pathways in biological processes. Although label-free multiphoton IVM is attractive for its non-perturbative nature, its wide application has been hindered, mostly due to the limited contrast of each imaging modality and the challenge to integrate them. Here we introduce simultaneous label-free autofluorescence-multiharmonic (SLAM) microscopy, a single-excitation source nonlinear imaging platform that uses a custom-designed excitation window at 1110 nm and shaped ultrafast pulses at 10 MHz to enable fast (2-orders-of-magnitude improvement), simultaneous, and efficient acquisition of autofluorescence (FAD and NADH) and second/third harmonic generation from a wide array of cellular and extracellular components (e.g., tumor cells, immune cells, vesicles, and vessels) in living tissue using only 14 mW for extended time-lapse investigations. Our work demonstrates the versatility and efficiency of SLAM microscopy for tracking cellular events in vivo, and is a major enabling advance in label-free IVM. Label-free and real-time visualization of the tumor microenvironment is attractive but challenging. Here the authors present an approach for simultaneous autofluorescence functional imaging and second/third harmonic generation imaging of structural features, using a single excitation source.
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