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Algorithm That Predicts the Hematopoietic Stem Cell's Decision in Advance

by Dr. Trupti Shirole on February 27, 2017 at 5:36 PM
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 Algorithm That Predicts the Hematopoietic Stem Cell's Decision in Advance

A hematopoietic stem cell's decision to become a certain cell type cannot be observed. At this time, it is only possible to verify the decision retrospectively with cell surface markers.

Researchers have now developed an algorithm that can predict the decision in advance.

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Dr. Carsten Marr, head of the Quantitative Single Cell Dynamics Research Group at the Helmholtz Zentrum München's Institute of Computational Biology (ICB), said, "Deep Neural Networks play a major role in our method," says Marr. "Our algorithm classifies light microscopic images and videos of individual cells by comparing these data with past experience from the development of such cells. In this way, the algorithm 'learns' how certain cells behave."

Three generations earlier than standard methods

Specifically, the researchers examined hematopoietic stem cells that were filmed under the microscope in the lab of Timm Schroeder at ETH Zurich.* Using the information on appearance and speed, the software was able to 'memorize' the corresponding behavior patterns and then make its prediction.
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"Compared to conventional methods, such as fluorescent antibodies against certain surface proteins, we know how the cells will decide three cell generations earlier," reports ICB scientist Dr. Felix Buggenthin, joint first author of the study together with Dr. Florian Büttner.

But what is the benefit of this look into the future? As study leader Marr explains, "Since we now know which cells will develop in which way, we can isolate them earlier than before and examine how they differ at a molecular level. We want to use this information to understand how the choices are made for particular developmental traits."

In the future, the focus will expand beyond hematopoietic stem cells. "We are using Deep Learning for very different problems with sufficiently large data records," explains Prof. Dr. Fabian Theis, ICB director and holder of the Mathematical Modelling of Biological Systems Chair at the TUM, who led the study together with Carsten Marr. "For example, we use very similar algorithms to analyze disease-associated patterns in the genome and identify biomarkers in clinical cell screens."

Source: Eurekalert
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