Prof Francine Marques
fzmarques.bsky.social
Prof Francine Marques
@fzmarques.bsky.social
Viertel, NHMRC & Heart Foundation Fellow & #Hypertension Lab Head at Monash University. Gut #microbiome, 🐶 lover, #Cancer survivor, Australian Academy of Science Gottschalk🏅she/her. Always an ally
🌍 Why it matters:

Our findings highlight how diet and gut microbiome (microbes, regional pH, metabolites) influence the host’s systemic immune regulation—with new connections and potential implications for chronic disease prevention
December 9, 2025 at 12:00 AM
🔍 What we did:

We combined metagenomes, in vivo colonic pH, & deep peripheral immune phenotyping (121 cell types & subtypes) to uncover novel host–microbe interactions in humans - the most detailed map of microbiome interaction w the human systemic immune system to date
December 9, 2025 at 12:00 AM
💡 Take‑home: Maternal fibre intake during pregnancy is cardioprotective for offspring, but the effect may be exaggerated in males

@monashuniversity.bsky.social
December 1, 2025 at 10:57 AM
🧫 Flow cytometry → sex‑specific changes in monocytes & lymphocytes

🧬 Single‑cell RNAseq → fibrotic genes reduced in both sexes, but inflammatory genes downregulated only in males

🦠 Microbiome → male offspring showed more changes than females
December 1, 2025 at 10:57 AM
In our latest paper in Clinical Sciences, led by PhD student Chaoran Yang, we reveal that maternal fibre intake doesn’t affect male and female offspring equally 👇

🔗 portlandpress.com/clinsci/arti...
Maternal dietary fibre intake results in sex-specific single-cell molecular changes in the heart of the offspring
Some types of dietary fibre undergo fermentation by the gut microbiome, producing microbial metabolites called short-chain fatty acids (SCFAs) – these are protective against cardiovascular disease (CV...
portlandpress.com
December 1, 2025 at 10:57 AM
Last year, we published a study in Circulation Research showing that maternal fibre intake during pregnancy was cardioprotective for the offspring via gut microbial metabolites known as short-chain fatty acids (SCFAs)

www.ahajournals.org/doi/10.1161/...
Maternal Diet and Gut Microbiota Influence Predisposition to Cardiovascular Disease in Offspring | Circulation Research
www.ahajournals.org
December 1, 2025 at 10:48 AM
Thank you Tatiane 🙏
October 30, 2025 at 7:37 PM
Her PhD focuses on how the gut #microbiome and intestinal pH contribute to human physiology such as #bloodpressure and the #immunesystem

Her papers so far include:

pubmed.ncbi.nlm.nih.gov/40560060/

pubmed.ncbi.nlm.nih.gov/38899764/

One more submitted, 2 under preparation! Watch this space
pH-sensor GPR68 plays a role in how dietary fibre lowers blood pressure in a preclinical model of hypertension - PubMed
Dietary fibre lowers blood pressure (BP) via short-chain fatty acids, acidic metabolites released from fibre fermentation by bacteria in the large intestine. This acidic microenvironment may activate ...
pubmed.ncbi.nlm.nih.gov
October 2, 2025 at 4:41 AM
There are guidelines for fibre intake (eg pubmed.ncbi.nlm.nih.gov/38586958/)

Yes the amounts of fibre are correct, the diets used in mice were extreme, reusing samples from a previous paper (pubmed.ncbi.nlm.nih.gov/32093510/) however we have data across several human populations
Recommendations for the Use of Dietary Fiber to Improve Blood Pressure Control - PubMed
According to several international, regional, and national guidelines on hypertension, lifestyle interventions are the first-line treatment to lower blood pressure (BP). Although diet is one of the ma...
pubmed.ncbi.nlm.nih.gov
September 21, 2025 at 2:12 PM
Look forward to continuing the conversations from Australia!

I’m off to UKE in Hamburg today and then the Max Planck Institute in Berlin on Tuesday

For now, safe travels everyone!
September 20, 2025 at 7:44 AM