Timothy Bredy
@twbredy.bsky.social
1K followers 820 following 120 posts
Professor | Director, UQ Centre for RNA in Neuroscience | Queensland Brain Institute | Noncoding RNA and memory; RNA and DNA modification in the brain.
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twbredy.bsky.social
Say what? 👍
raflynn5.bsky.social
We’re excited to report work led by postdoc Jennifer Porat in the lab, finding that DNA accumulates on the surface of living cells and that the secreted extracellular protein DNASE1L3 can modulate its levels on B and T cells. With a new twist for ATAC-seq as well www.biorxiv.org/content/10.1...
DNASE1L3 surveils mitochondrial DNA on the surface of distinct mammalian cells
The extracellular space is a critical environment for discriminating self versus non-self nucleic acids and initiating the appropriate immune responses through signaling cascades to relay information ...
www.biorxiv.org
twbredy.bsky.social
Like!
lindorfflarsen.bsky.social
A good day to remember John Gurdon’s school report from his biology master at Eton
twbredy.bsky.social
Solid thread.
sciencesophie.bsky.social
Dear Everyone, I've read the #NHMRC draft strategy and I have notes ...

So I'm going to...🧵🤔🧵😱🧵😵‍💫🧵🙏🧵🧵🧵
This is a repost from X because you all need to know!

#NHMRCdraftStratergy #Ihavenotes #ValueFundamentalScience

@nhmrc.bsky.social
twbredy.bsky.social
Nowadays, too many institutions thinking ‘if we build it they will come’ combined with a shortsighted research funding model, a saturated Phd training sector, bloated admin load, and a general decline in creativity. Tough times indeed!
kevinjkircher.com
Sometimes I think about how from 1935-1975ish, Bell Labs produced an insane amount of revolutionary science and technology, including 11 Nobel Prizes, the transistor, UNIX, C, the laser, the solar cell, information theory, etc. The secret? Provide scientists with ample, steady, no-strings funding.
sites.stat.columbia.edu
twbredy.bsky.social
Occasional PSA:

Intracellular molecular processing, especially in neurons, is not about differential RNA expression or even protein abundance for that matter. Not about quantity.

It’s about qualitative, functional states.

The sooner we get there as a community the faster the science advances
twbredy.bsky.social
RNA and Proteins: Who Bosses Whom? | Science | AAAS www.science.org/content/blog...
twbredy.bsky.social
Look at the other two, also interesting!
twbredy.bsky.social
This was huge effort that involved many great friends and colleagues, including Sourav Banerjee, Howard Chang, C.K. Chen, Xiang Li, Wei Wei, @irinavoineagu.bsky.social, @anggonolab.bsky.social, and the entire lab @QueenslandBrainInstute.
twbredy.bsky.social
How do neurons deal with fitting large regulatory proteins into small spaces to control plasticity and memory? By generating micropeptides via local translation of circRNAs, of course! Here’s to shedding new light on the ‘dark’ proteome in the brain.

www.biorxiv.org/cgi/content/...
Local translation of circular RNAs is required for synaptic activity and memory
Circular RNAs (circRNAs) are enriched in synapses and implicated in cognitive processes, and recent studies have shown that circRNAs can encode micropeptides, which suggests that there may be novel sy...
www.biorxiv.org
twbredy.bsky.social
How do neurons deal with fitting large regulatory proteins into small spaces to control plasticity and memory? By generating micropeptides via local translation of circRNAs, of course! Here’s to shedding new light on the ‘dark’ proteome in the brain.

www.biorxiv.org/cgi/content/...
Local translation of circular RNAs is required for synaptic activity and memory
Circular RNAs (circRNAs) are enriched in synapses and implicated in cognitive processes, and recent studies have shown that circRNAs can encode micropeptides, which suggests that there may be novel sy...
www.biorxiv.org
twbredy.bsky.social
First of two major paper drops this week. Ever hear of extrachromosomal DNA?

Mostly studied in the context of cancer and oncogene amplification, we’ve found an important role for these peculiar DNA elements in the brain! #neuroepigenetics #memory

www.biorxiv.org/cgi/content/...
A mobile circular DNA element drives memory-related processes in mice
Extrachromosomal circular DNAs (ecDNAs) are double stranded, closed loop DNA molecules that act independently of the genome. Here we report the discovery of a brain-enriched ecDNA, ecCldn34d, that reg...
www.biorxiv.org
Reposted by Timothy Bredy
biorxiv-neursci.bsky.social
Long non-coding RNA Cerox1 targets components of the mitochondrial electron transport chain to regulate the memory impairment caused by sleep deprivation https://www.biorxiv.org/content/10.1101/2025.09.15.676326v1
twbredy.bsky.social
Happy days with images like this….
twbredy.bsky.social
If it holds up in vivo, could take brain science to a whole other level.
twbredy.bsky.social
RNA can conduct electricity. Isn’t that interesting?
twbredy.bsky.social
It would be interesting to learn whether the Crispr babies have enhanced memory.
biorxiv-neursci.bsky.social
CCL5/CCR5 signaling modulates depression-relevant behavior, neuronal oscillations, and long-term depression of synaptic activity. https://www.biorxiv.org/content/10.1101/2025.09.12.675856v1
twbredy.bsky.social
clearly the current concept of a gene needs to be revised, especially in light of coding-noncoding genes. eg- we have a lncRNA that exerts regulatory influence in one subcellular compartment but then the same lncRNA translates and the protein product moves to a diff compartment. What do you call it
twbredy.bsky.social
example- we have a circRNA that translates- the function of the protein is distinct from the mRNA host from which the circRNA is derived- so it’s a different gene.
twbredy.bsky.social
hmmm. yes. different promoter different gene.
twbredy.bsky.social
If it’s an mRNA with a similar protein then I think it’s a variant of the same gene. If it’s noncoder with a variable 5’ end I think it’s a variant as well, especially if it’s coming off the same promoter and TSS.