Haochen Yang
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benjaminojr.bsky.social
Haochen Yang
@benjaminojr.bsky.social
I’m smooth (operator)
DPhil student with Heather Harrington and Helen Byrne at MPI-CBG and University of Oxford
And knocking out ITGB1 prevented compaction of assembloids and reduced collagen fibre accumulation, meaning integrins are essential for mesenchymal activation and fibrosis. See the paper here for more: www.nature.com/articles/s41...
Mouse liver assembloids model periportal architecture and biliary fibrosis - Nature
Nature - Mouse liver assembloids model periportal architecture and biliary fibrosis
www.nature.com
June 4, 2025 at 12:59 PM
Being able to detect this shape change meant we could perform knockouts and see the shape effects. Knocking out CDH11 prevented the typical fibrotic shape change of assembloids, which means that CDH11-mediated adhesion between mesenchymal cells is critical for triggering fibrosis.
June 4, 2025 at 12:59 PM
The DETECT Distance Ratio combines this information for an assembloid between timepoints with information about the shape of a healthy assembloid. The higher the DETECT Distance Ratio, the greater the morphological change over time, and the more likely scarring is present.
June 4, 2025 at 12:59 PM
(See our video here for more on the ECT: www.mpi-cbg.de/research/res...)
Media
www.mpi-cbg.de
June 4, 2025 at 12:59 PM
We start with the shape metric developed in the DETECT paper (arxiv.org/abs/2212.10883) that uses the Euler Characteristic Transform (ECT) to track topological features of the object (edges, vertices, faces) in multiple directions (the final metric is orientation agnostic).
Detecting Temporal shape changes with the Euler Characteristic Transform
Organoids are multi-cellular structures which are cultured in vitro from stem cells to resemble specific organs (e.g., brain, liver) in their three-dimensional composition. Dynamic changes in the shap...
arxiv.org
June 4, 2025 at 12:59 PM
This is where maths comes in. In this paper, we introduce a shape comparator metric - the DETECT Distance Ratio - which enables the change in shape of these assembloids to be studied over time.
June 4, 2025 at 12:59 PM
And knocking out ITGB1 prevented compaction of assembloids and reduced collagen fibre accumulation, meaning integrins are essential for mesenchymal activation and fibrosis. See the paper here for more: www.nature.com/articles/s41...
Mouse liver assembloids model periportal architecture and biliary fibrosis - Nature
Nature - Mouse liver assembloids model periportal architecture and biliary fibrosis
www.nature.com
June 4, 2025 at 12:50 PM
Being able to detect this shape change meant we could perform knockouts and see the shape effects. Knocking out CDH11 prevented the typical fibrotic shape change of assembloids, which means that CDH11-mediated adhesion between mesenchymal cells is critical for triggering fibrosis.
June 4, 2025 at 12:50 PM
The DETECT Distance Ratio combines this information for an assembloid between timepoints with information about the shape of a healthy assembloid. The higher the DETECT Distance Ratio, the greater the morphological change over time, and the more likely scarring is present.
June 4, 2025 at 12:50 PM
(See our video here for more on the ECT: www.mpi-cbg.de/research/res...)
Media
www.mpi-cbg.de
June 4, 2025 at 12:50 PM
We start with the shape metric developed in the DETECT paper (published here) that uses the Euler Characteristic Transform (ECT) to track topological features of the object (edges, vertices, faces) in multiple directions (the final metric is orientation agnostic).
June 4, 2025 at 12:50 PM
This is where maths comes in. In this paper, we introduce a shape comparator metric - the DETECT Distance Ratio - which enables the change in shape of these assembloids to be studied over time.
June 4, 2025 at 12:50 PM