Ashley St. John Lab

St. John lab @DukeNUS studies immune responses to human pathogens and develops novel vaccination strategies. We love mast cells. Tweets by Ashley.

[Ashley St. John Lab @StJohnLab]

Did you know that the fetal immune system can protect from congenital infection before birth? -Proud to share our study identifying protective functions of #microglia, contrasting the harmful early influence of #monocytes and primitive macrophages to #zika virus infection.

[Cell @CellCellPress]

Now online! Differential contributions of fetal mononuclear phagocytes to Zika virus neuroinvasion versus neuroprotection during congenital infection https://t.co/vsFeur4Z0e

[Valerie Chew @Valeriechew29]

Day 2 of @SgSI_Immunology Annual Symposium ended on a high note with @EvNewell1 sharing exciting updates on his work since leaving Singapore. Great #science and #friendship are the best combination for our thriving community. Looking forward to meeting again next year!

[Science Magazine @ScienceMagazine]

An analysis of skin and blood after #dengue infection in @ScienceAdvances shows a more dramatic reshaping and enrichment of T cells in the skin, indicating that vaccinations bolstering the skin’s immune response could help protect against dengue infection. https://t.co/0SJz8ew6fA

[Science Magazine @ScienceMagazine]

A new @SciImmunology Review discusses the lessons learned from Zika virus infection research, including maternal-fetal immune crosstalk and potential strategies for therapeutic targeting. https://t.co/nj9d8YfvLg

[Science Immunology @SciImmunology]

Approximately 10 years after the discovery that #Zika virus infections cause #congenital defects, a new Science #Immunology Review examines how experimental models have shed light on the mechanisms driving disease outcomes. @StJohnLab @dukenus https://t.co/RejBv8wxeF

[Ashley St. John Lab @StJohnLab]

We wanted to put over a decade of advances on the immunology surrounding fetal Zika infection in context in our review "Immune mechanisms of congenital Zika syndrome" @SciImmunology. So happy to see it's #openaccess! written with @Abhay_R_ https://t.co/mjGyY0G8AA

[Ashley St. John Lab @StJohnLab]

@GMalavige @aller_gyimm @chandi2012 Congrats Neelika! So sad I couldn’t be there for it but I’ll visit soon!

[Neelika Malavige @GMalavige]

The @aller_gyimm was officially opened today. The result of a journey which began a long time ago. It really transforms our ability to do research.

So thankful to our whole family @aller_gyimm and @chandi2012 for making this happen.

Exciting times ahead!

[Science Immunology @SciImmunology]

Analysis of data from nearly 1.5 million Danish children suggests that infants hospitalized for #RSV infections have a significantly higher risk of developing asthma when one or both parents are also asthmatic. @bart_lambrecht @BosteelsCedric
https://t.co/pzkGxIdTv8

[Ashley St. John Lab @StJohnLab]

@GMalavige @HcvFlavi2025 Best part of organizing is choosing the guest list! Thanks for coming!

[Neelika Malavige @GMalavige]

Thank you @StJohnLab for inviting me for the @HcvFlavi2025

So lovely to meet up with you again. Its been one of the best conferences. Congratulations for putting together such a wonderful meeting.

#dengue #flavi

[Miriam Merad, MD, PhD @MiriamMerad]

Very inspired that Yaghi, a Palestinian refugee who came to the U.S. at 15 received the 2025 chemistry #NobelPrize . A reminder of the power of education to unleash talent, a testament to U.S. capacity to attract/ enable talent, and how much progress a we lose to incessant wars

[Ashley St. John Lab @StJohnLab]

Delighted to see Chia-Lin featured by @JExpMed - one of the #womeninSTEM I’ve always admired.

[National Yang Ming Chiao Tung University 國立陽明交通大學 @NYCU_official]

👩‍🔬 JEM invited NYCU’s Prof. Chia-Lin Hsu to share her journey as a female scientist—founding a lab, chasing dreams, and overcoming challenges.

A voice from Taiwan to empower more women in science. 💡

#WomenInSTEM #WomenInScience #NYCU #JEM #TaiwanScience

[Lai Guan NG @lai9uan]

The Granulocyte Meeting 2025 has officially concluded!
🙏 Huge thanks to all the incredible speakers & chairs, your contributions made this meeting a success.
📍 Looking ahead: see you all at #GMeeting2027 in Korea! #GMeeting2025

[nature @Nature]

“I was fired for holding the line on scientific integrity. The stakes are not theoretical — we have already seen the largest [US] measles outbreak in more than 30 years, which claimed the lives of two children.”

https://t.co/Npitw2ncG8

[Ashley St. John Lab @StJohnLab]

Bittersweet ending to the second Granulocyte Meeting! Thank you @lai9uan for bringing us to Shanghai for another chance to unite the granulocytes. Next stop Korea 2027!

[VignuzziLab @VignuzziLab]

Interested in attending the EMBO Lecture Course, entitled "RNA virus infection and host immune responses," hosted in Faridabad, India, on  11 – 14 February 2026?

sign up here:
https://t.co/Byw2hhNvND

[Science Magazine @ScienceMagazine]

A new analysis of a cohort in Nepal links the waning of vaccine immunity against Japanese encephalitis virus to elevated chymase levels and a higher risk of severe #dengue infection.

Read more in @ScienceTM: https://t.co/HMAZlYMhaL

[Science Magazine @ScienceMagazine]

A new analysis of a cohort in Nepal links the waning of vaccine immunity against Japanese encephalitis virus to elevated chymase levels and a higher risk of severe #dengue infection.

Read more in @ScienceTM: https://t.co/HMAZlYMhaL

[Science Translational Medicine @ScienceTM]

A new analysis of a cohort in Nepal links the waning of vaccine immunity against Japanese encephalitis virus to elevated chymase levels and a higher risk of severe #dengue infection. @StJohnLab @dukenus @smlhtr_ https://t.co/iuI3V1aiu5

[Ashley St. John Lab @StJohnLab]

Dengue is rising. In Nepal, studying >500 #dengue patients, we found that waning immunity to Japanese encephalitis virus (#JEV) was associated with worsened dengue severity, which has implications for #vaccine campaign planning. First au🙌: @smlhtr_
https://t.co/tdR7MMF0gg