Greg Harrison
@bactophile.bsky.social
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Postdoc at Tufts University Studying C. difficile 🔬 Chicago > St. Louis > Boston 👨🔬🪴📚🍷🏳️🌈
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Greg Harrison
Drug Monkey
5 days ago
NIH Fellowship awards for FY2025 by race
drugmonkey.wordpress.com/2026/03/19/n...
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NIH Fellowship awards for FY2025 by race
The NIH Data Book page reporting Research Project Grants (RPG) and Fellowship awards by race has been updated for FY2025. Completely unsurprisingly, despite the impression that may have been convey…
https://drugmonkey.wordpress.com/2026/03/19/nih-fellowship-success-rates-for-fy2025-by-race/
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Greg Harrison
Max Kozlov
25 days ago
Congress rejected massive cuts to US science budgets for 2026, but much of the money still isn’t flowing to researchers. The culprit? The White House Office of Management and Budget (OMB) is quietly slow-walking the release of funds. 🧵👇
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White House stalls release of approved US science budgets
The US Congress rejected sweeping cuts to science agencies. But the NIH, the NSF and NASA have had their spending slowed.
https://www.nature.com/articles/d41586-026-00601-0
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Greg Harrison
ACLU
about 1 month ago
BREAKING: The Department of Education has ended its directive that attempted to restrict diversity, equity, and inclusion efforts in schools nationwide. This is a victory for academic freedom and education equity.
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Greg Harrison
Wiep Klaas Smits (ExpBac/CMAT)
about 1 month ago
The CspC:CspA heterodimer transduces germinant and co-germinant signals during Clostridioides difficile spore germination
dx.plos.org/10.1371/jour...
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The CspC:CspA heterodimer transduces germinant and co-germinant signals during Clostridioides difficile spore germination
Unlike other bacteria, C. difficile must detect both a germinant signal and a co-germinant signal to trigger spore germination, but how these cues are sensed is unknown. This study finds that the CspC...
https://dx.plos.org/10.1371/journal.pbio.3003610
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Greg Harrison
Pride in Microbiology
about 1 month ago
This Friday, February 13th, we'll have our first ☕️ Coffee Hours ☕️ event of the year at 12-1 PM (EST)! Check your emails for the Zoom link. If you're not yet signed up for our newsletter, you can do so at
prideinmicrobiology.github.io
! 🏳️🌈
#PrideInSTEM
#Microbiology
#PrideinMicrobiology
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Greg Harrison
Mike Feigin 🥯
about 2 months ago
Do you: 1) Live near/in Buffalo? 2) Like to organize stuff? 3) Hate what the government is doing to science? If you answered yes, help me organize the Stand Up for Science rally on March 7th! I need reps from UB, Buff State, Canisius, D’Youville to spread the word. I need general support. DM me!
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Greg Harrison
Drew Hryckowian
about 2 months ago
Postdoc position available in my lab! Project will focus on how the microbiome-derived metabolite butyrate shapes C. difficile fitness and pathogenesis & will build on our previous/ongoing work in this space. Apply here:
hr.wisc.edu/postdoc-and-...
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Postdoc, Postgrad, and Research Intern Vacancies
Browse Postoc and Research Intern vacancies at UW–Madison.
https://hr.wisc.edu/postdoc-and-research-intern-vacancies/
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Very cool analysis of sporulation genes in the Paenibacillaceae from the
@heatherfeaga.bsky.social
group! 🤩
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about 2 months ago
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Greg Harrison
George O'Toole (he/him/his)
about 2 months ago
rince & JB Editor's Choice: Lin, Prince & Feaga identified sporulation genes via analyzing almost 1500 genomes. They show that that an unusual membrane-localized variant of Spo0B is found throughout Paenibacillaceae.
journals.asm.org/doi/10.1128/...
@asm.org
#JBacteriology
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Greg Harrison
Feldman Lab@WashU
about 2 months ago
We are hiring postdocs :)
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Greg Harrison
PLOS Biology
about 2 months ago
Unlike other
#bacteria
, C. difficile must detect both germinant & co-germinant signals to trigger
#spore
#germination
. This study finds that the CspC:CspA complex is a key signaling node that integrates environmental cues to regulate
#Cdifficile
spore germination
@plosbiology.org
🧪
plos.io/4rtCKdZ
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Greg Harrison
Dana Shaw
about 2 months ago
My department at Washington State University is recruiting an Assistant or Associate Professor in vector-borne disease 🕷️🦟🦠 Full job description is linked below. Come join us on the Palouse!
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Greg Harrison
Pride in Microbiology
about 2 months ago
📢 🏳️🌈🦠 We are expanding our matching program for 2SLGBTQIA+ microbiologists! Whether you need a mentor, a collaborator, or community support, we can help you. 🔗 Mentorship & Geo-matching:
tinyurl.com/5cdyppys
🔗 Research Interest Groups:
tinyurl.com/4p88bm4k
#Microbiology
#QueerInSTEM
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Greg Harrison
Tina Smith
about 2 months ago
You may have voted for him. You may have supported what he said Operation Metro Surge was going to be. But it’s okay to say you changed your mind. It’s okay to say he’s gone too far.
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Greg Harrison
Caroline Bartman
about 2 months ago
Can’t do good science in an unfree country. Defund ICE.
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Greg Harrison
Elizabeth Warren
about 2 months ago
Donald Trump and Kristi Noem think you will believe them over your own eyes. No. Alex Pretti wasn't a terrorist. He was a VA nurse. When agents pushed a woman to the ground, he tried to help her up. His last words were “Are you okay?” Enough. Kristi Noem should resign.
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Alex Pretti wasn't a terrorist. He was a VA nurse.
YouTube video by Senator Elizabeth Warren
https://youtube.com/shorts/7tgnoKTziBs?feature=share
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Greg Harrison
Senator Chris Van Hollen
about 2 months ago
Like many of you, I have seen this video, and I'm demanding answers. My team has reached out to ICE repeatedly and have yet to get clear answers. [1/2]
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Greg Harrison
Barack Obama
about 2 months ago
The killing of Alex Pretti is a heartbreaking tragedy. It should also be a wake-up call to every American, regardless of party, that many of our core values as a nation are increasingly under assault.
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Greg Harrison
Acyn
about 2 months ago
CNN: DHS officials have come to FEMA staff and told them to limit the use of the word ice…they are worried that by posting something like, watch out for the ice, that it's going to become a meme….
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Greg Harrison
Harmit Singh Malik
about 2 months ago
Once it became clear that an ICE agent could commit murder in broad daylight with no consequences except the VPOTUS defending him with no heed to the facts and instead vilifying and prosecuting the victim, we opened the door to roving death squads. But there is no statute of limitations for murder.
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Unreal. Are witnesses being detained by ICE now? Where are the witnesses??
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about 2 months ago
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ABOLISH 👏🏼 DEFUND 👏🏼 IMPEACH 👏🏼 WTF is happening Cuban Detainee in El Paso ICE Facility Died by Homicide, Autopsy Shows
www.nytimes.com/2026/01/21/u...
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Cuban Detainee in El Paso ICE Facility Died by Homicide, Autopsy Shows
https://www.nytimes.com/2026/01/21/us/el-paso-ice-detainee-homicide.html?smid=nytcore-ios-share
2 months ago
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Greg Harrison
Aaron Reichlin-Melnick
2 months ago
🚨HOLY CRAP. An ICE whistleblower just revealed a secret memo authorizing ICE officers to break into homes without a judicial warrant, which DHS's own legal training materials say is unconstitutional! ICE then hid the memo from the public, passing it along by word of mouth and private conversation.
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Greg Harrison
Vaughn Cooper
2 months ago
Are you a graduate student or postdoc who wants to apply your science to policy? The Gulf Research Program’s Science Policy Fellowship provides experience for one year on the staff of federal, state, local, NGO in the Gulf region and impt networking.
www.nationalacademies.org/programs/GUL...
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Gulf Research Program Science Policy Fellowships
The Gulf Research Program’s Science Policy Fellowship helps scientists hone their skills by putting them to practice for the benefit of Gulf Coast communities and ecosystems. Fellows gain first-hand e...
https://www.nationalacademies.org/programs/GULF-GULFEO-14-01
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Greg Harrison
Wiep Klaas Smits (ExpBac/CMAT)
3 months ago
A single DNA methylation site regulates cell fate during Clostridioides difficile sporulation
www.biorxiv.org/content/10.6...
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A single DNA methylation site regulates cell fate during Clostridioides difficile sporulation
DNA methylation is a widespread phenomenon in bacteria that can regulate gene expression, although the mechanisms underlying this epigenetic regulation are often poorly understood. In Clostridioides d...
https://www.biorxiv.org/content/10.64898/2025.12.24.696351v1
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Greg Harrison
Jan-Willem Veening
3 months ago
And check out the accompanying paper from the Grangeasse lab:
www.nature.com/articles/s41...
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Streptococcus pneumoniae S protein activates PBP1a to regulate peptidoglycan remodelling and cell division - Nature Microbiology
S protein interacts with and activates PBP1a during cell division, as part of a larger GpsB-associated multiprotein complex that coordinates peptidoglycan remodelling in Streptococcus pneumoniae.
https://www.nature.com/articles/s41564-025-02210-5
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Greg Harrison
Jan-Willem Veening
3 months ago
Now online
@natmicrobiol.nature.com
!
www.nature.com/articles/s41...
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Greg Harrison
ASM
3 months ago
Calling all postdoctoral women scientists in microbiology! We're here to support you; receive up to $2,000 to travel to a meeting, visit another laboratory or take a course to enhance your research skills. Check eligibility and apply now:
asm.social/2Jh
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Greg Harrison
STCmicrobeblog
3 months ago
indeed, 𝘙𝘶𝘨𝘰𝘴𝘪𝘵𝘢𝘭𝘦𝘢 𝘰𝘳𝘺𝘻𝘢𝘦 looke like fusilli, which are notably better at holding on salsa di pomodoro than spaghetti... and as pasta addicts, we fell instantly in love with the shape of this newly described alphaproteo from the Rhizobiales 🤭
#MicroSky
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Greg Harrison
Rob Fagan
4 months ago
There's just over 2 weeks left to apply for a fully funded PhD studentship with us working on C. difficile vancomycin resistance. Two more studentships - linked in the thread below - close in early January
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Greg Harrison
Don Moynihan
4 months ago
Three German universities offering post-docs for researchers "who cannot conduct or continue their work in the USA appropriately because of actual political pressure. "
www.uni-konstanz.de/zukunftskoll...
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Early Career Rescue Fellowship
https://www.uni-konstanz.de/zukunftskolleg/fellowships/early-career-rescue-fellowship/
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Greg Harrison
Mark Peifer (He, him)
5 months ago
The 5th of 6 faculty positions in UNC Biology is posted. We're working with the
@ncbg.bsky.social
to fill a joint position as Director of the UNC Herbarium at
@ncbg.bsky.social
and as Associate Professor within the Department of Biology (BIOL). Please share 1/n
unc.peopleadmin.com/postings/308...
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Associate Professor & Director of NCBG Herbarium
This is a research, teaching, and public service position at the University of North Carolina at Chapel Hill, serving jointly as Herbarium Director at the North Carolina Botanical Garden (NCBG) and as...
https://unc.peopleadmin.com/postings/308835
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Excited to share my latest postdoctoral work in the Shen Lab at Tufts! In this study, we follow up on an exciting finding by former grad student
@shailab.bsky.social
that C diff uses its Class A PBP (PBP1) to drive cell division (unlike previously studied bacteria)!
journals.plos.org/plosgenetics...
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Molecular dissection of Class A PBP function uncovers novel features of the non-canonical Clostridioides difficile divisome complex
Author summary Bacterial cell division is an ancient and essential process, but our molecular understanding of this process is primarily based on studies in a select few model systems. Recent work fou...
https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1011746
5 months ago
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Greg Harrison
Black Microbiologists Assoc (Black In Micro)
6 months ago
Friendly reminder: 🎉 Pre-register today & get ready to join our FREE online celebration. Everyone is welcome. To keep #BlackInMicro alive Donate:
tinyurl.com/GiveBiM
and Register to attend:
linktr.ee/BlackInMicro
#BlackInMicro
(see links in bio)
#BiMWeek2025
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Greg Harrison
Shabaana Khader
6 months ago
UChicago Microbiology is searching for tenured or tenure-track faculty working in host-pathogens interactions, viral and bacterial pathogenesis, and emerging infectious diseases. Come join our vibrant Department!
microbiology.uchicago.edu
Apply here
apply.interfolio.com/174404
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Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
https://apply.interfolio.com/174404
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Greg Harrison
Vaughn Cooper
6 months ago
🚨 Microbiologists! We are recruiting Assistant / Associate Professors in 3 collaborative areas of our U. Pittsburgh School of Medicine. 1) MMG (my dept): fundamental research in med micro 2) Peds ID / I4Kids institute 3) Center for Vaccine Research 🔗 to all 3 w/info:
www.linkedin.com/posts/vaughn...
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Faculty Professor Associate - Full-Time | Vaughn Cooper
We are recruiting Faculty microbiologists in three (3) different, complementary, and collaborative areas at the University of Pittsburgh associated with the School of Medicine. 1) Fundamental researc...
https://www.linkedin.com/posts/vaughn-cooper-phd_faculty-professor-associate-full-time-activity-7376380337452523520-4gOG?utm_source=share&utm_medium=member_desktop&rcm=ACoAAADLnXgB4CLKDX_tz7MjuN96IBzkSWha36w
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Fantastic meeting! Heard about SO MUCH groundbreaking work and met so many incredible people! Such a great community 😃
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6 months ago
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Greg Harrison
Harvard_MCB
6 months ago
Rich Losick’s Farewell Publication Reexamines a Molecular Biology Milestone 🧪 🧬
#AcademicSky
#higherEd
www.mcb.harvard.edu/department/n...
@cryptogenomicon.bsky.social
@craigphunter.bsky.social
@rachellegaudet.bsky.social
@harvardmagazine.bsky.social
@naoshigeuchida.bsky.social
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Rich Losick’s Farewell Publication Reexamines a Molecular Biology Milestone - Harvard University - Department of Molecular & Cellular Biology
Richard Losick, Maria Moors Cabot Professor of Biology, Emeritus in Harvard’s Department of Molecular and Cellular Biology, is about to publish what he describes as his “last paper”—though […]
https://www.mcb.harvard.edu/department/news/rich-losicks-farewell-publication-reexamines-a-molecular-biology-milestone/
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Greg Harrison
Wiep Klaas Smits (ExpBac/CMAT)
6 months ago
Analysis of essential genes in Clostridioides difficile by CRISPRi and Tn-seq | Journal of Bacteriology
journals.asm.org/doi/10.1128/...
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Analysis of essential genes in Clostridioides difficile by CRISPRi and Tn-seq | Journal of Bacteriology
Clostridioides difficile is an opportunistic pathogen for which better antibiotics are sorely needed. Most antibiotics target pathways that are essential for viability. Here, we use saturation transpo...
https://journals.asm.org/doi/10.1128/jb.00220-25?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%20%200pubmed
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Greg Harrison
Scott Delaney
7 months ago
NEW: Don't ask too many questions, but... NIH may not re-terminate the 900ish grants at issue in the main NIH lawsuits after all. To the PIs of reinstated grants, SPEND NOW! 🧵 Here's what NIH is probably thinking. Bear with me:
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Heather Feaga
7 months ago
Here we show that >90% of Paenibacillus encode a unique Spo0B with a transmembrane domain! TM domain helps it interact with its phosphorelay partners. Congrats to
@isabellalin.bsky.social
who left for grad school this week and her mentor
@cassidyprints.bsky.social
!
www.biorxiv.org/content/10.1...
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Conservation of sporulation genes and a transmembrane-containing Spo0B variant in Paenibacillus
Sporulation is a strategy employed by many bacteria to survive harsh environmental conditions. The genus Paenibacillus includes spore-forming species notorious for spoiling pasteurized dairy products ...
https://www.biorxiv.org/content/10.1101/2025.08.24.672004v1
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Greg Harrison
Current Biology
7 months ago
Post a non-religious photo you think of as holy.
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Greg Harrison
Rob Fagan
7 months ago
New preprint from us! The latest part of our C. difficile vancomycin resistance story. We identified a new two-component system (VnrRS) that can control expression of the vanG pathway - just needs one amino acid change
@buddlejess.bsky.social
@brockhurstlab.bsky.social
@claireyt.bsky.social
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A novel two-component system controls vancomycin resistance in epidemic Clostridioides difficile
The glycopeptide antibiotic vancomycin is the frontline treatment for C. difficile infection in the UK. There have been only sporadic reports of resistance in the clinic but testing is rare so the tru...
https://www.biorxiv.org/content/10.1101/2025.08.21.671617v1
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😔
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7 months ago
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Greg Harrison
Joanne Flynn
7 months ago
We are hiring! The Dept of Microbiology and Molecular Genetics is looking for faculty at the Assistant or Associate professor level (tenure track). Please consider joining our vibrant microbiology and immunology community at the University of Pittsburgh School of medicine
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Greg Harrison
Petra Levin
7 months ago
Elio Schaechter was one of my heroes. His 1958 paper with Ole Maaløe and Niels Kjeldgaard (fondly known as “SMK”) is a North Star for so much work in my group. A wonderful scientist, great communicator, and a very kind person. May his memory be a blessing.
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Greg Harrison
ASM
8 months ago
On Aug. 1, ASM & partner societies filed an expanded amicus brief with SCOTUS to defend scientific integrity & protect early-career researchers. The brief highlights the harm caused by NIH grant terminations, including canceling the MOSAIC program.
asm.org/press-releas...
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Scientific Societies File Supreme Court Amicus Brief in Support of NIH Grantees
ASM and fellow societies filed an amicus brief with the Supreme Court, calling for the swift restoration of NIH grant funding supporting early-career scientists, such as the MOSAIC program.
https://asm.org/press-releases/2025/august/scientific-societies-file-supreme-court-amicus-bri
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Greg Harrison
bioRxiv Microbiology
8 months ago
The CspC:CspA heterodimer transduces germinant and co-germinant signals during Clostridioides difficile spore germination.
https://www.biorxiv.org/content/10.1101/2025.08.01.668244v1
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Greg Harrison
Joe Zackular
8 months ago
Excited to share this collaborative study with
@ritatamayo.bsky.social
showing that E. faecalis influences C. diff morphology through the phase variable CmrRST system! This work was co-led by the amazing team of
@ashleyweiss.bsky.social
and Jilarie Santos-Santiago!
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Greg Harrison
Kim Davis
9 months ago
Excited to post our first S. aureus preprint on biorxiv! Big congrats to co-first authors, postdocs
@anjali20anil.bsky.social
and Rezia Braza, and really enjoyed the collaboration with
@torreslab.bsky.social
!
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