Putrino Lab

@putrinolab.bsky.social

We are heartbroken by the passing of @jutraslab.bsky.social, whom we honored in 2021 with our ELA & whom all of us at BAL considered a friend. His research, mentorship, & partnership leave a lasting impact. His legacy continues to inspire us all. www.nhscotthanekamp.com/obituaries/D...

Obituary information for Dr. Brandon Lyon Jutras

View Dr. Brandon Lyon Jutras's obituary, contribute to their memorial, see their funeral service details, and more.

nhscotthanekamp.com

Anything that publicly earns you praise will always, invariably, earn you hate. This is an immutable law of social media. The trick is to never stop working in good faith to be truly worthy of the praise. That’s what gives you the right to ignore the hate. Thanks for the love 🙏🏻

Breaking: PolyBio-Supported Study Identifies Association between HHV-6 Reactivation & Long COVID Symptom Severity The work adds to growing evidence that chronic viral reactivation may contribute to the biological mechanisms underlying Long COVID. Read more: polybio.org/polybio-supp...

PolyBio-Supported Study Identifies Association Between HHV-6 Reactivation and Long COVID Severity - PolyBio Research Foundation

A collaborative study between the laboratory of Akiko Iwasaki at Yale University and the Icahn School of Medicine at Mount Sinai has identified a potential link between reactivation of the herpesvirus...

polybio.org

Putrino Lab@putrinolab.bsky.social · 2mo ago

We have known for a while that #LongCOVID pathobiology for many involves reactivation of various herpesviruses. As we continue to validate this it is great to see this work coming out in collaboration with @VirusesImmunity’s incredible team. Here we www.medrxiv.org/content/10.6... 1/

We received feedback that folks are not so eager to enter a placebo-controlled trial for fear of being in the placebo arm. So, for our trial looking at low-dose rapamycin for #LongCOVID we now have an open-label extension added to the trial so everyone gets to try it! Reach out!

Bild

We just lost an absolute legend in the field of neuro-restoration. V. Reggie Edgerton was a true innovator and fierce driver of change for people with paralysis. I never stopped being in awe of how far he would go to help just one person. Rest easy, Reggie. You did so much 💔

Image of legendary neuroscientist V. Reggie Edgerton standing in his lab with his arms folded

Excited to finally get this one out in @Nature_NPJ! In the largest study of its kind to date, we used data from the @visible_health platform to answer a simple question: can we predict symptom fluctuations and crashes from both the physiological and www.nature.com/articles/s41... 1/

Digital physiological biomarkers predict within-person symptom changes in complex chronic illness - npj Digital Medicine

npj Digital Medicine - Digital physiological biomarkers predict within-person symptom changes in complex chronic illness

nature.com

Proud to have worked with the brilliant @drmfreire on this new study looking into spike protein in #LongCOVID. The most important part of this study that doesn't just look for spike protein in folks with LC and healthy controls, but it also uses a technique called www.biorxiv.org/content/10.6... 1/

Persistent SARS-CoV-2 Spike is Associated with Localized Immune Dysregulation in Long COVID Gut Biopsies

SARS-CoV-2 persistence is a proposed driver of Long COVID (LC), but the in-situ relationship between residual viral antigen and immune dysregulation remains poorly defined. To address this critical gap, we employed a high-resolution, multi-modal approach—combining RNAscope, GeoMx Digital Spatial Profiling (DSP), spatial transcriptomics, and multiplex immunofluorescence—on 25 terminal ileum and left colon biopsies from a clinical cohort of 8 LC participants and 5 healthy controls. We confirmed the persistence of SARS-CoV-2 Spike transcript and protein in the gut tissue of all LC cases and controls tested. Yet, comparison of Spike-positive (Spike+) regions in LC versus healthy control colon tissues revealed a differential, symptomatic state-associated signature, with 57 differentially expressed genes (DEGs) (26 upregulated, 31 downregulated), revealing genes that disrupt the immune response in LC subjects. LC colon Spike+ regions demonstrated increased expression of AQP8 and other absorptive-related genes (SLC26A3, SLC26A2, and CLCA4) which are involved with Crohn′s disease along with transcripts involved in tumorigenesis (GUCA2A, S100P, TSPAN1). Simultaneous downregulation of key homeostatic chemokines (CXCL13, CCL19, CCL21), and other transcripts reported to exhibit low expression in colorectal cancers (TMEM88B, NIBAN3, DMBT1), suggesting a paradox of epithelial tissue stress yet dysfunctional immune trafficking. Further analysis comparing Spike+ versus Spike- regions within LC colon tissue demonstrated an active, localized, antigen-driven immune microenvironment, identifying 122 DEGs (82 upregulated, 40 downregulated), including tumorigenesis genes. Cellular deconvolution of Spike+ regions revealed a statistically significant focal enrichment of myeloid-derived cells (macrophages, non-classical/intermediate monocytes), plasma cells, and regulatory T cells, coupled with significant enrichment in T-cell-related pathways, including ″Antigen processing and presentation,″ and ″Th1/Th2/Th17 cell differentiation″. The ileum displayed a similar, though less pronounced, signature, demonstrating these statistically significant findings are specific to the colon of LC subjects. In contrast, corresponding Spike+ vs. Spike- analysis in healthy control colon tissues showed a more modest transcriptional response with 38 DEGs. Our data provide robust evidence that persistent SARS-CoV-2 Spike protein detection in the gut is not immunologically inert. Instead, it is actively associated with distinct, immune cell composition shifts and a dysfunctional pro-inflammatory transcriptional profile, supporting the hypothesis that retained viral antigen drives chronic immune dysregulation in tissue of Long COVID subjects. ### Competing Interest Statement The authors have declared no competing interest.

biorxiv.org

Trying out a new caffeine delivery system today (pouches) so everyone pray for my team as I become “more productive”…folks with #LongCOVID, #MECFS and other infection-associated chronic illnesses who can tolerate caffeine for energy: have you tried pouches? Any feedback? 👀