Joined June 2022
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Pinned Tweet
I am BEYOND excited to share my PhD thesis research is officially published in @CellCellPress today. Read on for an exciting story about how #exercise promotes antitumor #immunity by modulating behavior of the #microbiome 🏃‍♀️🦠 authors.elsevier.com/c/1lPCr…

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Catherine Phelps retweeted
Catherine Phelps from @upmc.com representing #SITC Talks on how #exercise can improve outcome - role for #microbial #metabolite #formate on mediating #anticancer #immunity / #WIC2025 #SITC2025
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Catherine Phelps retweeted
Talking about 3D chromatin and T cell exhaustion at #TRCCC2024
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Catherine Phelps retweeted
Yet another reason to exercise! Phelps et al. doi.org/10.1016/j.cell.2025.…

#ResearchHighlight In a study published in #Cell, Phelps et al. find a mechanism connecting exercise, gut microbiota & anti-tumour immunity; exercise induces microbiota to produce formate, which in turn enhances CD8 T cell functionality. 👇 bit.ly/4lh5q6m
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Catherine Phelps retweeted
It’s dangerous to go alone! Take this!
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Catherine Phelps retweeted
Anyway, here’s Wonderwall
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He’s on vacation
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Catherine Phelps retweeted
22 Jul 2025
Online now: Gasdermin C cleavage by Cathepsin S modulates Rab7 vesicles in intestinal epithelial cells to amplify anti-helminth immunity dlvr.it/TM3NYq

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Catherine Phelps retweeted
Gasdermin C cleavage by Cathepsin S modulates Rab7 vesicles in intestinal epithelial cells to amplify anti-helminth immunity @ImmunityCP @surya25_pandey @YinanGong @RH_Laboratory cell.com/immunity/fulltext/S…
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Catherine Phelps retweeted
9 Jul 2025
#MicrobiotaPower & #Exercise! Phelps, Meisel &co show @CellCellPress that exercise drives formate from microbiota that in turns activates NRF2 in CD8 T cells driving STAT1/IRF8 programs that potentiate immune checkpoint inhibitor efficacy against melanoma dlvr.it/TLqLW7

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Catherine Phelps retweeted
AAI Members in the News! For her graduate thesis with Dr. Marlies Meisel at @Pitt_Medicine, @CatMPhelps found that #exercise improved #cancer outcomes and enhanced responses to #immunotherapy in mice by reshaping the gut #microbiome. Congrats! 🔗 ow.ly/RIMj50WnXoy
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Catherine Phelps retweeted
🏃‍♂️💥 Exercise boosts immunotherapy! New study shows exercise increases gut microbiota-derived formate, enhancing CD8 T cell–mediated antitumor immunity via Nrf2. ⭐️Formate may be a new biomarker for better ICI response in melanoma. @CellPressNews @OncoAlert #microbiome #cancer #Oncology doi.org/10.1016/j.cell.2025.…
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Catherine Phelps retweeted
#ScienceSaturday 🏃‍♂️🧬 Can exercise really help fight #cancer? 📢 A new study in @CellCellPress shows exercise rewires the gut #microbiome to enhance immune responses against tumors. ➡️ @CatMPhelps et al. found exercise increases levels of a microbiota-derived metabolite called formate, which boosts CD8 T cell function through the Nrf2 pathway. This strengthens the immune system’s ability to attack tumors, even those resistant to immune checkpoint inhibitors. ➡️ In #melanoma models, both exercise and formate supplementation reduced tumor growth, increased survival and amplified the effects of immunotherapy. High-formate-producing human microbiota showed similar antitumor effects in preclinical studies. 💡 These findings suggest a powerful link between movement, metabolism, and immune activation. 🔗 Read the full article in Cell: cell.com/cell/fulltext/S0092… @PittTweet @Pitt_PMI
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Catherine Phelps retweeted
12 Jul 2025
True academic friendship is agreeing to sit in the audience for their 8:15am presentation
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Catherine Phelps retweeted
11 Jul 2025
Me right before a deadline
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10 Jul 2025
Exercise helps the immune system to fight tumours by stimulating microbes in the gut to make a compound known as formate go.nature.com/44jPqvg
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Catherine Phelps retweeted
New University of Pittsburgh research shows gut bacteria are responsible for how exercise boosts cancer treatment in mice, pointing to possible future therapies for humans. explorevenango.com/state-new…

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Nice thread showing highlights of our study:
Why is exercise anti-cancer? Mice that exercise suppress tumors better than those that don't If those mice are treated with antibiotics, the gut microbiome is depleted and the effect is pretty much gone: it's (at least partly) mediated by gut bacteria 🧵
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Catherine Phelps retweeted
New University of Pittsburgh research shows gut bacteria are responsible for how exercise boosts cancer treatment in mice, pointing to possible future therapies for humans. exploreclarion.com/state-new…

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