Improving Ovarian Cancer Immunotherapy: Cancer immunologists at the University of Virginia have now discovered what underlies this failure. #immunotherapy #checkpointinhibitor #ovarian #cancer #biome #flagellin
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Howard G. Smith MD, AM on Instagram: "Improving Ovarian Cancer Immunotherapy Immunotherapy has been a resounding success for melanoma skin cancer and small cell lung cancer. Not so for ovarian cancer. Cancer immunologists at the University of Virginia have now discovered what underlies this failure. Their research discovered that flagellin protein from gut bacteria blocks the effectiveness of the checkpoint inhibitors that power most current immunotherapy. This bacterial flagellin inhibits immune cell communication helping tumors flourish rather than die. Using a mouse model and blocking flagellin action restored immunotherapeutic effectiveness with 80% of treated animals enjoying long-term tumor control. If this approach is effective for human ovarian cancer patients, coupling flagellin blocking with checkpoint immunotherapy may be a winning therapeutic strategy …..someday soon. https://newsroom.uvahealth.com/2025/02/11/ovarian-cancer-discovery-could-turn-ailed-treatment-into-lifesaver/ https://aacrjournals.org/cancerimmunolres/article-abstract/doi/10.1158/2326-6066.CIR-24-0513/751676/TLR5-signaling-causes-dendritic-cell-dysfunction?redirectedFrom=fulltext #immunotherapy #checkpointinhibitor #ovarian #cancer #biome #flagellin"

0 likes, 0 comments - drhowardsmithreports on March 11, 2025: "Improving Ovarian Cancer Immunotherapy Immunotherapy has been a resounding success for melanoma skin cancer and small cell lung cancer. Not so for ovarian cancer. Cancer immunologists at the University of Virginia have now discovered what underlies this failure. Their research discovered that flagellin protein from gut bacteria blocks the effectiveness of the checkpoint inhibitors that power most current immunotherapy. This bacterial flagellin inhibits immune cell communication helping tumors flourish rather than die. Using a mouse model and blocking flagellin action restored immunotherapeutic effectiveness with 80% of treated animals enjoying long-term tumor control. If this approach is effective for human ovarian cancer patients, coupling flagellin blocking with checkpoint immunotherapy may be a winning therapeutic strategy …..someday soon. https://newsroom.uvahealth.com/2025/02/11/ovarian-cancer-discovery-could-turn-ailed-treatment-into-lifesaver/ https://aacrjournals.org/cancerimmunolres/article-abstract/doi/10.1158/2326-6066.CIR-24-0513/751676/TLR5-signaling-causes-dendritic-cell-dysfunction?redirectedFrom=fulltext #immunotherapy #checkpointinhibitor #ovarian #cancer #biome #flagellin".

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This study uses a #FluidFM-based injection approach to show that establishment of a #Salmonella replicative niche in the cytosol of enteroid cells (when uncoupled from invasion) does not require #flagellin or #T3SS effectors #PLOSBiology @Microbio_ETH https://plos.io/3UBBUhz
Direct Salmonella injection into enteroid cells allows the study of host–pathogen interactions in the cytosol with high spatiotemporal resolution

A previous study in PLOS Biology developed a FluidFM-based approach to inject organelles into living cells. Using this technology, this study shows that establishment of a Salmonella Typhimurium replicative niche in the cytosol of enteroid cells, when uncoupled from invasion, does not require flagellin or type III secretion system effectors.

Immunizing mice against bacterial #flagellin can prevent changes in #microbiota induced by #DietaryEmulsifier, as well as their deleterious consequences for intestinal health. @melissa_kordahi @BenoitChassaing &co #ProcessedFoods #UPF #PLOSBiology https://plos.io/48iOgjr
Vaccination against microbiota motility protects mice from the detrimental impact of dietary emulsifier consumption

Bacterial flagellin is a key mediator of detrimental impacts on intestinal health caused by dietary emulsifier. This study shows that immunizing mice against flagellin can prevent emulsifier-induced changes in microbiota pro-inflammatory potential, microbiota encroachment, as well as deleterious consequences such as intestinal inflammation and metabolic deregulation.

Online now - our 2023 issue 5:
Activation of #plant #NLR #immune receptors
#Stereoisomer specificity in #flagellin #sialylation
Dormant #ribosome activation by #TORC1
#Cytomegaloviral #DCAF for #cullin-mediated #STAT2 degradation
Cover: Korolchuk lab
https://www.embopress.org/toc/14602075/2023/42/5

What determines specificity of #flagellin #glycosylation in #bacteria?
Patrick Viollier, Nicolas Kint et al reveal #stereoisomer selectivity wired into species-specific C-terminal domain of #FlmG #glycosyltransferases

https://www.embopress.org/doi/10.15252/embj.2022112880