Ben Liffner
@benliffner.bsky.social
580 followers 300 following 41 posts
Microbiology nerd 🤓. Future Making Fellow @ The University of Adelaide🦠. Studying parasite cell biology using microscopy🔬🦟🧫.
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benliffner.bsky.social
Come and join our team!

We currently have two PhD scholarships between Danny Wilson and myself

We are a supportive, productive, and inclusive research group studying parasite cell biology @ The University of Adelaide in beautiful South Australia

scholarships.adelaide.edu.au/Scholarships...
benliffner.bsky.social
Thanks very much for having me, and coming along!
benliffner.bsky.social
Thanks very much to the wonderful folks in the new Flinders Health & Medical Research Building for hosting me on Tuesday!
Cheers to Nick Eyre and @evahesping.bsky.social for the invitation to speak and for showing me around the beautiful new facility!
betacellgirl.bsky.social
Fabulous CMPH Biosciences talk this week by @benliffner.bsky.social about Expansion #Microscopy to visualise parasites - so pretty!!! Great demonstration of how an improved method can give new answers 👏 Thanks for visiting #HMRB @flindersuniversity.bsky.social
Reposted by Ben Liffner
sturalph.bsky.social
Go Long Huynh! Fancy cell biology and fancy microscopy on artemisinin resistance in Plasmodium parasites at the BioMalPar conference #EMBLMalaria @benliffner.bsky.social @sabsalon.bsky.social @events.embl.org
Reposted by Ben Liffner
veupathdb.org
The new OrthoMCL-7 with OrthoFinder clustering, Similar Groups, and Phylogenetic Trees is 🌟 now live 🌟at orthomcl.org, part of the @veupathdb.bsky.social
family of resources. The previous version of OrthoMCL-6.21 is still available as a Legacy site.
Reposted by Ben Liffner
wallaceucsf.bsky.social
Cell biology is producing mountains of microscopy data, usually a given paper got that data for some purpose, but what if you could find relevant data that you could use to answer your own questions? in her new preprint, @marymirvis.bsky.social develops Systematic Review methods to do just that
Reposted by Ben Liffner
Reposted by Ben Liffner
biorxivpreprint.bsky.social
Unlocking new understanding of Plasmodium sporozoite biology with expansion microscopy https://www.biorxiv.org/content/10.1101/2025.04.09.648058v1
benliffner.bsky.social
How i feel when I get to look at expanded midguts or salivary glands
Reposted by Ben Liffner
biorxiv-microbiol.bsky.social
Unlocking new understanding of Plasmodium sporozoite biology with expansion microscopy https://www.biorxiv.org/content/10.1101/2025.04.09.648058v1
benliffner.bsky.social
A shoutout to @freddyfrischknecht.bsky.social who has helped me out with my many sporozoite biology queries over the last few years, and likely unknowingly inspired me to find out how many rhoptries a sporozoite has from an email about 6 years ago
benliffner.bsky.social
A huge thanks to all my co-authors in this study and a special thanks to @sabsalon.bsky.social for letting me loose on a project that initially had nothing to do with what we were previously working on, but has now greatly shaped our research directions!
benliffner.bsky.social
There are plenty of other interesting tidbits and findings in this study, and after peer review we will make all the imaging data available on an online database so anybody can look through the images themselves!
benliffner.bsky.social
For the small number of RON11 knockdown parasites that make it to the salivary gland, we found they accumulate in the space between epithelial cells but almost never actually invade or get into the secretory cavity. This interesting observation explains why these parasites are not transmissible!
benliffner.bsky.social
More important though, these RON11 knockdown sporozoites only made half the number of rhoptries. And when we looked at the small number of sporozoites that made it to the salivary gland, many of them had no rhoptries at all!
benliffner.bsky.social
Looking at these RON11 knockdown parasites, we saw that late in their rhoptry biogenesis, most of them had aberrant looking rhoptries.
benliffner.bsky.social
We wanted to put this new knowledge of rhoptry biology to the test by looking at what happens when we knockdown a rhoptry protein, but which to choose? Recently, a study of the protein RON11 showed that knockdown of this protein led to merozoites with 1 rhoptry
journals.plos.org/plosbiology/...
journals.plos.org
benliffner.bsky.social
This led us to the hypothesis that sporozoites have two pairs of rhoptries that are specialised for each of their invasion events: the salivary gland and hepatocytes
benliffner.bsky.social
One unexpected observation was that of the usually 2 pairs of rhoptries in oocyst sporozoites, they were morphologically distinguishable. We called these the dimorphic (different size) and congruent (same size) rhoptry pairs, with the congruent rhoptries specifically used up during SG invasion.
benliffner.bsky.social
Wanting to follow the fate of rhoptries through the invasion of sporozoites into the mosquito salivary gland, we could differentiate sporozoites at different stages of this process. Excitingly, we could see that sporozoites use up two rhoptries during salivary gland epithelial cell invasion!
benliffner.bsky.social
We then put the segmentation score to the test, using it to develop a timeline for the biogenesis of rhoptries in forming sporozoites!
benliffner.bsky.social
In the past, oocyst size was used a proxy for development, but one sporozoite formation started, we saw no real correlation with developmental stage and oocyst size. Instead we developed what we call the segmentation score, using progress through cytokinesis as a way to assess sporozoite development