Brennan Lab CVR
@brennanlab.bsky.social
76 followers 42 following 9 posts
Lab Account | PI: @bbrennan83 | 🔬 bunyavirus/vector interactions at @CVRinfo.bsky.social🏴󠁧󠁢󠁳󠁣󠁴󠁿🇬🇧🇱🇹🇹🇭🇪🇺🏳️‍⚧️🏳️‍🌈
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brennanlab.bsky.social
Not for want of trying tho! Haha
Reposted by Brennan Lab CVR
Reposted by Brennan Lab CVR
virotick.bsky.social
Curious about tick virology? Read my latest piece in @uk.theconversation.com where I explain findings of my latest research article www.nature.com/articles/s41...

Hope it will helps people to understand the importance of studying tick and their pathogens #ScienceforAll #WomenInScience #Arbovirose
brennanlab.bsky.social
📢 Thrilled to share our NEW PREPRINT!
SFTSV NSs is a novel tick antiviral RNAi suppressor! 🦠
🧫 NSs essential for tick but not mammalian infection
🧬 Binds 22-nt viral siRNAs to block RNAi
🕷️ Reveals host-specific viral immune evasion
📖 doi.org/p2vf
#lovevirology #bunyavirus #tickborne
SFTSV NSs protein is a novel tick antiviral RNAi response suppressor
Severe fever with thrombocytopenia syndrome virus (SFTSV) is an emerging tick-borne phenuivirus causing high mortality in humans. While the non-structural protein NSs is dispensable for replication in...
doi.org
brennanlab.bsky.social
Post 5/5 🧵
IMPACT: This transforms tick-borne disease research:
🎯 New drug targets
🎯 Understanding vector competence
🎯 Virus-tick evolution
Testing if mechanisms work across other tick viruses next.

👨‍🔬 collaborative project with @alf-castello.bsky.social and @alainkohlvirology.bsky.social
brennanlab.bsky.social
Post 4/5 🧵
SURPRISE: TOP3B knockdown had a weird effect:

Viral RNA levels: unchanged
Infectious particles: dramatically reduced

Suggests TOP3B helps maintain viral RNA conformation for proper packaging. Tick & human versions remarkably similar!
#lovevirology
brennanlab.bsky.social
Post 3/5 🧵
DISCOVERY: Virus systematically hijacks tick RNA machinery:
🔹 RNAi pathway: UP (tick defense)
🔹 Translation: UP (viral protein synthesis)
🔹 rRNA processing: DOWN (disrupts cell proteins)
18 proteins both changed activity AND bound viral nucleocapsid!
#bunyavirus
brennanlab.bsky.social
Post 2/5 🧵
METHOD: Using RNA interactome capture (RIC), we UV-crosslinks RNA-bound proteins to map the "RBPome" in infected vs healthy tick cells.
Challenge: Bunyavirus RNA lacks poly(A) tails, yet found enough "poly(A)-like" sequences to capture viral RNAs too!
#RNABiology #collaboration #Scitech
brennanlab.bsky.social
Thread: How Viruses Hijack Tick RNA Machinery 🧬🕷️

Post 1/5 🧵
We just published the first map of how viruses rewire tick cell RNA machinery! Led by Alexandra Wilson & Wael Kamel!

We Found 283 proteins that change RNA-binding during Uukuniemi virus infection.

📄 Our paper: doi.org/10.1371/jour...
Uukuniemi virus infection causes a pervasive remodelling of the RNA-binding proteome in tick cells
Author summary In host cells, RNA-binding proteins play essential roles in the life cycle of many viruses by influencing how viral RNA is processed, translated, replicated and assembled into virions. ...
doi.org
brennanlab.bsky.social
Lovely time celebrating Andrew’s PhD Graduation last week 🎓🎉🍾 #nextsteps #lovevirology #bunyavirus
Reposted by Brennan Lab CVR
virotick.bsky.social
Finally A BIG THANK YOU to all my co-authors, they made this long journey started in 2021 a bit smoother! Thanks to Scaturro lab, Kohl lab, @brennanlab.bsky.social, @quangu.bsky.social, and Dundee proteomics! And of course thanks to the Tick cell Biobank and Lesley for those tiny cells!