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Merge pull request #31 from agarny/UC4
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 Updated screenshots for use case 4 (rat heart).
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shsa992 committed Jul 26, 2019
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Expand Up @@ -2,119 +2,111 @@ Mapping Cellular Gene Expression in the Rat Heart from Image to Scaffold
=========================================================================
.. |open-control| image:: /_images/open_control.png
:width: 2 em

.. |data-icon| image:: /_images/data_icon.png
:width: 2 em
.. |scaffold-map-icon| image:: /_images/scaffold_map_icon.svg
:width: 5%

.. contents:: Contents:
:local:
:depth: 2
:backlinks: top

Overview
********

Rat heart geometric 3Scan (www.3scan.com) data for both ventricles and both atria from the Schwaber/Vadigepalli/Cheng
group has been fitted with a 3D rat heart scaffold. The locations of a cluster of 151 ICN cell samples that have been
lifted for RNA-Seq analysis (molecular cell body transcript data) from a region of the left atrium, from a different animal,
are indicated on the 3D scaffold. Clicking on one of these tissue locations displays the RNA message level for the 154
genes examined. To visualize the spatial distribution of the RNA message, the 151 samples have been fitted with a
continuous field description using scaffold nodal parameters. Any one of the 154 genes can be selected to show the
spatial variation of that transcript as a heat map. Rat heart neural pathway data showing the efferent connectome
linking ICN cells in the left atrium and the SA node cells on the right atrium will be visualised in the next iteration
of this use-case. *Note* that the treatment process needed to extract the cells for RNA-Seq analysis left that rat heart
in a very distorted state which was therefore not fitted with a scaffold. Instead corresponding locations of the ICN
cells in the much less distorted 3Scan-processed heart were identified by eye and the cell information was transferred
to that heart.
Rat heart geometric `3Scan <www.3scan.com>`_ data for both ventricles and both atria from the Schwaber/Vadigepalli/Cheng group has been fitted with a 3D rat heart scaffold.
The location of a cluster of 151 ICN cell samples, which have been lifted for RNA-Seq analysis (molecular cell body transcript data) from a region of the left atrium (from a different animal), are indicated on the 3D scaffold.
To click on one of these tissue locations displays the RNA message level for the 154 genes examined.
To visualize the spatial distribution of the RNA message, the 151 samples have been fitted with a continuous field description using scaffold nodal parameters.
Any one of the 154 genes can be selected to show the spatial variation of that transcript as a heat map.
Rat heart neural pathway data showing the efferent connectome linking ICN cells in the left atrium and the SA node cells on the right atrium are visualized in the next iteration of this use case.

**Note:** the treatment process needed to extract the cells for RNA-Seq analysis left that rat heart in a very distorted state and was therefore not fitted with a scaffold.
Instead, corresponding locations of the ICN cells in the much less distorted 3Scan-processed heart were identified by eye and the cell information was transferred to that heart.

.. figure:: _images/use_case4_workflow_white.png
:figwidth: 95%
:width: 90%
:align: center

Step-by-step instructions
Step-by-step instructions
*************************

Follow these step-by-step instructions to familiarise yourself with the flow of the web interface.

**Step 1**. Click on the Heart on the flatmap to generate search results for heart.

.. figure:: _images/Slide1.png
:figwidth: 95%
:width: 72%
:align: center

**Step 2**. Hover on 'Molecular Phenotype Distribution of Single Rat ICN Neurons' search result.

.. figure:: _images/Slide2.png
:figwidth: 95%
:width: 72%
:align: center
Follow these step-by-step instructions to familiarize yourself with the flow of the Web interface.

**Step 3**. Select the blue circle.
**Step 1**. Click on the Heart on the flatmap to generate search results for heart, i.e. `UBERON:948 <http://purl.obolibrary.org/obo/UBERON_0000948>`_.

.. figure:: _images/Slide3.png
.. figure:: _images/use_case_4/Step1.png
:figwidth: 95%
:width: 72%
:align: center

**Step 4**. The Scaffold Viewer tab opens and the fitted heart scaffold can be visualised. A number of lifted neuronal cells have been mapped and registered on the scaffold (purple spheres).
**Step 2**. Click on the |scaffold-map-icon| icon.

.. figure:: _images/Slide4.png
.. figure:: _images/use_case_4/Step2.png
:figwidth: 95%
:width: 72%
:align: center

**Step 5**. Click on |open-control| icon to pop-up the drop-down menu. Visibility can be turned ON or OFF for each item.
**Step 3**. The Scaffold Viewer tab opens and the fitted heart scaffold can be visualized.
A number of lifted neuronal cells have been mapped and registered on the scaffold (purple spheres).

.. figure:: _images/Slide4aa.png
.. figure:: _images/use_case_4/Step3.png
:figwidth: 95%
:width: 72%
:align: center

**Step 6**. Hover on different regions to highlight the chambers separately.
**Step 4**. Click on the |open-control| icon to pop up the drop-down menu.
Visibility can be turned *on* or *off* for each item.

.. figure:: _images/Slide5.png
.. figure:: _images/use_case_4/Step4.png
:figwidth: 95%
:width: 72%
:align: center

**Step 7**. Each cell has been lifted and assayed for the expression of 154 genes selected as associated with neuromodulation and cardiac function using qPCR or RNASeq. These have been mapped on the registered cells on the scaffold. Each cell has a unique ID.
**Step 5**. Hover on the different regions to highlight the chambers separately.

.. figure:: _images/Slide5a.png
.. figure:: _images/use_case_4/Step5.png
:figwidth: 95%
:width: 72%
:align: center

**Step 8**. Click on the Flatmap tab again.
**Step 6**. Each cell has been lifted and assayed for the expression of 154 genes selected as associated with neuromodulation and cardiac function using qPCR or RNASeq.
These have been mapped on the registered cells on the scaffold.
Each cell has a unique ID.

.. figure:: _images/Slide6.png
.. figure:: _images/use_case_4/Step6.png
:figwidth: 95%
:width: 72%
:align: center

**Step 9**. Now click on the green circle in the same search result.
**Step 7**. Now, click on the |data-icon| icon.

.. figure:: _images/Slide7.png
.. figure:: _images/use_case_4/Step7.png
:figwidth: 95%
:width: 72%
:align: center

**Step 10**. The Data Viewer tab opens to view the gene expression data. Currently only a raw barplot is supported.
In future, additional visualisation capabilities such as heatmap and clustering will be added.
**Step 8**. The Data Viewer tab opens to view the gene expression data.
At this point, the data can only viewed using a bar chart.
However, additional visualization capabilities, such as heatmap and clustering, will be available in the future.

.. figure:: _images/Slide8.png
.. figure:: _images/use_case_4/Step8.png
:figwidth: 95%
:width: 72%
:align: center

**Step 11**. From the dropdown menu, more genes can be added to the plot.
**Step 9**. From the drop-down menu, more genes can be added to the bar chart.

.. figure:: _images/Slide9.png
.. figure:: _images/use_case_4/Step9.png
:figwidth: 95%
:width: 72%
:align: center

**Step 12**. The plot will show the expression of each gene with a unique color for all the registered cells on the scaffold.
**Step 10**. The bar chart will show the expression of each gene using a unique color for all the registered cells on the scaffold.

.. figure:: _images/Slide10.png
.. figure:: _images/use_case_4/Step10.png
:figwidth: 95%
:width: 72%
:align: center
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