Excited to share our new pre-print collab w. @RDasLab!
Study led by @VedTopkar brilliant MD/PhD student who used biochemistry and bioinformatics to probe the relationship between Mbp mRNA structure & transport/local translation in oligodendrocytes!
biorxiv.org/content/10.1101/…
1/8
Combined w. work from Jackie Trotter & Doug Fields Labs, we propose a RNA switch model:
- During transport, hnRNP-F binds unstructured MLS to inhibit translation.
- At the cell periphery, membrane-bound Fyn kinase phosphorylates & releases hnRNP-F to initiate translation.
7/8
It was fantastic to work w. Ved & Rhiju! Ved was incredibly productive & received a R21 for this work.
This was a project that survived COVID, 2 lab moves, sabbatical...
We're fortunate & grateful to @ZucheroLab Brad for help w. oligo cultures after I left Stanford 🙏
8/8
Excited to share our preprint on cytoskeletal organization in astrocytes!
biorxiv.org/content/10.1101/…
Postdoc @mewynne759 looked at microtubules, IFs/GFAP & actin along long elaborate processes.
Wonderful to collaborate w postdoc @dharshinigopal & @NogalesLab on cryo-ET 🤓
1/x
Many distal ends are enriched in GFAP.
We don't know what this means yet - maybe these can become endfeet that contact blood vessels. Astrocyte processes are heterogeneous in vivo (some contact blood vessels, others contact synapses) - like axons vs. dendrites in neurons.
7/x
So this preprint opens up many new questions in astrocyte cell biology!
This was a real team effort:
- Postdoc Will Barclay started the project at the NIH
- Postbac Johanna Bergstrom and undergrad Eva Lopez analyzed data
- PhD student Lana Ho contributed imaging data
Another issue here is the gap time between bachelors and starting a PhD. At 27, trainees could and should be finishing a 5-year PhD and moving forward in their careers.
PhD programs need to normalize accepting students straight out of undergrad.