Volkan K. Koseoglu
volkankoseoglu.bsky.social
Volkan K. Koseoglu
@volkankoseoglu.bsky.social
Assistant Professor at Dept of Microbiology and Immunology, Wake Forest University School of Medicine. Interested in mechanisms of bacterial pathogenesis.
Excited to share our lab’s first preprint!

A huge shout-out to our lab tech, Jonah Lanier, for driving this project.
Lithocholic acid induces T3SS-dependent formation of invasion-competent Shigella flexneri aggregates https://www.biorxiv.org/content/10.1101/2025.11.24.690263v1
November 25, 2025 at 9:58 PM
Reposted by Volkan K. Koseoglu
Check out our new publication, a collaboration with Giovanni Luchetti and Vishva Dixit @ Genentech.
We show that the E.coli effector NleL inhibits intestinal epithelial cell extrusion after #inflammasome activation via degrading the kinases ROCK1 and 2!!
www.nature.com/articles/s41...

Explainer 1/8
Enteropathogenic bacteria evade ROCK-driven epithelial cell extrusion - Nature
The bacterial ubiquitin ligase NleL evades host defence mechanisms both by inhibiting pyroptosis and by preventing infected intestinal epithelial cells from being extruded into the lumen and expelled ...
www.nature.com
October 22, 2025 at 3:47 PM
Neutralizing antibodies induced by IpaB and IpaC mRNA vaccines inhibit Shigella flexneri invasion | Microbiology Spectrum journals.asm.org/doi/full/10....
Neutralizing antibodies induced by IpaB and IpaC mRNA vaccines inhibit Shigella flexneri invasion | Microbiology Spectrum
This study aimed to utilize mRNA vaccine technology targeting conserved antigens (IpaB and IpaC) to overcome the limitations of previous Shigella vaccines. By demonstrating functional immune responses...
journals.asm.org
September 7, 2025 at 9:24 PM
Macrophages orchestrate elimination of Shigella from the intestinal epithelial cell niche via TLR-induced IL-12 and IFN-γ: Cell Host & Microbe www.cell.com/cell-host-mi...
Macrophages orchestrate elimination of Shigella from the intestinal epithelial cell niche via TLR-induced IL-12 and IFN-γ
Eislmayr et al. reveal a previously unrecognized role of macrophages in controlling the intracellular pathogen Shigella. By sensing bacteria and triggering IFN-γ production, macrophages, not neutrophi...
www.cell.com
September 4, 2025 at 1:10 AM
Targeting deubiquitinating enzymes and ubiquitin pathway modulators to enhance host defense against bacterial infections | mBio journals.asm.org/doi/10.1128/...
Targeting deubiquitinating enzymes and ubiquitin pathway modulators to enhance host defense against bacterial infections | mBio
Antibiotic-resistant infections, particularly those caused by intracellular pathogens, represent an urgent public health threat due to their ability to evade immune responses and resist conventional a...
journals.asm.org
September 3, 2025 at 11:43 PM
Role of listeriolysin O and phospholipases C in L. monocytogenes intercellular protrusion dynamics, resolution, and autophagy avoidance | mBio journals.asm.org/doi/full/10....
Role of listeriolysin O and phospholipases C in L. monocytogenes intercellular protrusion dynamics, resolution, and autophagy avoidance | mBio
Intracellular bacterial pathogens, including L. monocytogenes, spread from cell to cell to effectively disseminate within host tissues and cause systemic infections. We developed a fluorescence micros...
journals.asm.org
August 23, 2025 at 3:29 PM
Reposted by Volkan K. Koseoglu
Please share my 1 min video on the importance of maintaining NIH funding of infectious diseases and drug discovery research vs rising antibiotic resistance

Drastic budget cuts harm our health and imperil the next generation of scientists

More @UCSanDiego “Behind Every Breakthrough” bit.ly/3FlXQs3
August 7, 2025 at 8:40 PM
Reposted by Volkan K. Koseoglu
Only 328 days to go! We're very busy behind the scenes getting thigns ready for the meeting! In the meantime you can add your email address for updates here: coming-soon.embo.org/w26-04
Shigella, the first international meeting
coming-soon.embo.org
May 27, 2025 at 3:22 PM
Reposted by Volkan K. Koseoglu
1. Today the NIH director issued a new directive slashing overhead rates to 15%.

I want to provide some context on what that means and why it matters.

grants.nih.gov/grants/guide...
NOT-OD-25-068: Supplemental Guidance to the 2024 NIH Grants Policy Statement: Indirect Cost Rates
NIH Funding Opportunities and Notices in the NIH Guide for Grants and Contracts: Supplemental Guidance to the 2024 NIH Grants Policy Statement: Indirect Cost Rates NOT-OD-25-068. OD
grants.nih.gov
February 8, 2025 at 12:18 AM
Reposted by Volkan K. Koseoglu
Excited to share our latest, "Biofilm dispersal patterns revealed using far-red fluorogenic probes." @plos.bsky.social We developed a cell-labeling strategy using far-red dyes to image dense microbial communities (where fluorescent proteins often do not work well) journals.plos.org/plosbiology/...
November 26, 2024 at 2:47 PM
Reposted by Volkan K. Koseoglu
#Shigella and #ETEC main causes of #pediatric #diarrhea in Rwanda after 10 years of #Rotavirus vaccine.
Highlights vaccine success but continued burden of #enteric bacterial pathogens
🦠 🧫 #MicroSky
academic.oup.com/jid/article/...
academic.oup.com
November 19, 2024 at 2:41 PM
SPATEs promote the survival of Shigella to the plasma complement system upon local hemorrhage and bacteremia

www.pnas.org/doi/10.1073/...
www.pnas.org
November 13, 2024 at 9:45 PM
Reposted by Volkan K. Koseoglu
From the S. Shin lab sunnyshinlab.bsky.social: Hu guanylate-binding protein 1 (GBP1) damages the vesicle around Legionella, revealing the pathogen to the cell by activating inflammasomes. In contrast, murine GBPs can directly attack cytosolic Legionella. doi.org/10.1128/mbio... #mbio #ASM #MicroSky
Human GBP1 facilitates the rupture of the Legionella-containing vacuole and inflammasome activation | mBio
Inflammasomes are essential for host defense against intracellular bacterial pathogens like Legionella, as they activate caspases, which promote cytokine release and cell death to control infection. I...
doi.org
November 13, 2024 at 12:32 PM
Reposted by Volkan K. Koseoglu
Can colleagues amplify this appeal to journals and journal editors to open accounts on Bluesky, please? @MicrobioSoc @TrendsMicrobiol @CellCellPress @JBacteriology @jbiolchem @Nature @ScienceMagazine @PNASNews @MolMicroEditors @NAR_Open @NatureMicrobiol @NatureComms @ASMicrobiology 🙏
🦠🧪🧫🧬
November 10, 2024 at 1:13 PM
Reposted by Volkan K. Koseoglu
Calling all microbiologists! Registration is open for the Mid-Atlantic Microbial Pathogenesis Meeting, February 2-4, 2025.! Abstract deadline is 12/8/2024, but don't wait, filling fast. Check it out at mampm.org.
MAMPM
February 2-4, 2025 Wintergreen Resort, Virginia
mampm.org
November 9, 2024 at 2:20 PM