Ryan MacDonald

@macdonaldlab.bsky.social

Glia biologist. Vision scientist. Interested in mechanisms of development and ageing in the retina. We love glia. You should too.

Our work on the TET enzymes in retinal development is out. We identified that rod fate is inhibited when DNA demethylation is prevented by removal of the TET enzymes. Interestingly, photoreceptor numbers are normal. We utilized WGBS and bACE-seq to profile the precise localization of 5mC and 5hmC,…

PLOS Biology@plosbiology.org · last yr.

TET enzymes remove #DNAmethylation markers; @ismaelhdeznunez.bsky.social @clark-lab-retina.bsky.social &co show that these enzymes are required for #photoreceptor cells to initiate the genetic program to become rods instead of cones, & for maturation of the #retina @plosbiology.org 🧪 plos.io/3UaVBfl

Left: The active DNA methylation cycle. (i) 5mC is added by DNMTs. (ii) The TET enzymes oxidize 5mC to 5hmC. (iii) 5hmC is converted to 5fC and 5caC by the TET enzymes, followed by conversion back to cytosine by TDG and the base-excision repair pathway. (iv) Alternatively, APOBEC converts 5mC to thymine, causing DNA mismatch. Right: H&E staining of an allelic series of TET conditional P21 mutants.

Hi all, we got a grant for a cool project that will follow up of our paper published a few months ago (see below). We will explore how light acts as a morphogen to instruct PCP. If you are looking for a postdoc position and interested in this topic, please reach out!

Michel Cayouette@michelcayouette.bsky.social · last yr.

ICYMI our latest paper is now out officially in print (is there still such thing?). And since Dev Cell @cellpress.bsky.social did not select our submission for cover, I post it here. A really cool illustration from my son Zack. www.cell.com/developmenta...

My lab studies mechanisms of pediatric glaucoma and the development of tissues affected (Schlemm's canal and trabecular meshwork). I am getting creative with fundraising because, well... So if you know someone who might be interested in funding our work: joinus.cuimc.columbia.edu/index.cfm?fu...

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