摘要
Developing an imaging method with micrometer-to-subcellular resolution is of great significance for visualizing biological samples of different sizes.The label-free and highthroughput mass spectrometry imaging(MSI)technology has shown potential in the implementation of this view.Despite many improvements in MSI witnessed over the past decades,it remains a challenge to achieve a flexible resolution from micrometer down to subcellular level with high detection sensitivity.In this Perspective,we focus on the recent development of MSI techniques based on different ionization resources.Furthermore,several designs of instruments and applications in bioimaging have been reviewed and compared.Additionally,we proposed the perspectives and challenges for MSI methods,including pursuing the matrix free and multiscale resolution with high detection sensitivity and deeply combining machine learning in omics research.
基金
the financial support from the National Natural Science Foundation of China(22034003,21974060,21327902)
the Excellent Research Program of Nanjing University(ZYJH004)
the China Postdoctoral Science Foundation(2019TQ0145).
