Abstract
The chromosome is an important genetic material carrier in living individuals and the spatial conformation (mainly referring to the chromosomal structure, quantity, centromere position and other morphological information) may be abnormal or mutated. Thus, it may generate a high possibility to cause diseases. Generally, the karyotype of chromosome G-bands is detected and analyzed using an optical microscope. However, it is difficult to detect the G-band structures for traditional optical microscopes on the nanometer scale. Herein, we have studied the detection method of chromosome G-band samples by atomic force microscopy (AFM) imaging. The structures of chromosome G-banding are studied with different trypsin treatment durations. The experiment result shows that the treatment duration of 20 s is the best time to form G-band structures. The AFM images show the structures of chromosome G-bands which cannot be observed under an optical microscope. This work provides a new way for the detection and diagnosis of chromosome diseases on the nanometer scale.
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Acknowledgements
This work was supported by National Key R&D Program of China (No. 172017YFE0112100), EU H2020 Program (MNR4SCell No.734174), Jilin Provincial Science and Technology Program (Nos.20180414002GH, 20180414081GH, 20180520203JH, 20190702002GH and 20200901011SF), and “111” Project of China (D17017).
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Wang, B., Li, J., Dong, J. et al. Atomic force microscopy imaging of the G-banding process of chromosomes. Appl Nanosci 11, 249–255 (2021). https://doi.org/10.1007/s13204-020-01584-8
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DOI: https://doi.org/10.1007/s13204-020-01584-8