Ons M'Saad Profile picture
Yale PhD '21 | MIT BSc ‘17 | Panluminate Founder & CEO 🖖✌️

Apr 6, 2022, 7 tweets

Introducing #panExM-t: a protocol where 🧠 tissue is expanded ✨24x✨, pan-stained with NHS ester, and immunolabeled.
Now you can see everything in the brain, even synaptic densities 👇. High potential for #connectomics!
bioRxiv: biorxiv.org/content/10.110…

Here's a data set showing synapses, mitochondria, and spine apparatuses

We found synapse morphology can be classified according to their NHS ester pan-staining patterns - similar to PTA staining in EM (Gray)

GFAP filaments are preserved well, transgenic neurons seem so sparse! and of course: cilia

We also developed a new lipid pan-stain: a photocrosslinkable ceramide (pacSph) which works well in tissue fixed only with formaldehyde. Blood vessels look particularly nice!

Finally, please look at the Supplementary Figures. It's full of amazing images: biorxiv.org/content/10.110…

Imaging the brain was a great privilege. I thank all my collaborators who made this work possible. /end

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