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Image recovery from unknown network mechanisms for DNA sequencing-based microscopy

View ORCID ProfileDavid Fernandez Bonet, View ORCID ProfileIan T. Hoffecker
doi: https://doi.org/10.1101/2022.09.29.510142
David Fernandez Bonet
1Science for Life Laboratory; Department of Gene Technology, KTH Royal Institute of Technology; Tomtebodavägen 23a 171 65, Solna, Sweden
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  • For correspondence: ithof@kth.se dfb@kth.se
Ian T. Hoffecker
1Science for Life Laboratory; Department of Gene Technology, KTH Royal Institute of Technology; Tomtebodavägen 23a 171 65, Solna, Sweden
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Abstract

Imaging-by-sequencing methods are an emerging alternative to conventional optical micro- or nanoscale imaging. In these methods, molecular networks form through proximity-dependent association between DNA molecules carrying random sequence identifiers. DNA strands record pairwise associations such that network structure may be recovered by sequencing which, in turn, reveals the underlying spatial relationships between molecules comprising the network. Determining the computational reconstruction strategy that makes the best use of the information (in terms of spatial localization accuracy, robustness to noise, and scalability) in these networks is an open problem. We present a graph-based technique for reconstructing a diversity of molecular network classes in 2 and 3 dimensions without prior knowledge of their fundamental generation mechanisms. The model achieves robustness by obtaining an unbiased sampling of local and global network structure using random walks, making use of minimal prior assumptions. Images are recovered from networks in two stages of dimensionality reduction first with this structural discovery step followed by the manifold learning step. By breaking the process into stages, computational complexity could be reduced leading to fast and accurate performance. Our method represents a means by which diverse molecular network generation strategies could be unified with a common reconstruction framework.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • https://github.com/DavidFernandezBonet/Staged-Image-Recovery

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-ND 4.0 International license.
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Posted September 30, 2022.
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Image recovery from unknown network mechanisms for DNA sequencing-based microscopy
David Fernandez Bonet, Ian T. Hoffecker
bioRxiv 2022.09.29.510142; doi: https://doi.org/10.1101/2022.09.29.510142
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Image recovery from unknown network mechanisms for DNA sequencing-based microscopy
David Fernandez Bonet, Ian T. Hoffecker
bioRxiv 2022.09.29.510142; doi: https://doi.org/10.1101/2022.09.29.510142

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