ArticleCommunications biology2023
A design of experiments screen reveals that Clostridium novyi-NT spore germinant sensing is stereoflexible for valine and its analogs.
Article in Communications biology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 8 citations in OpenAlex.
- Research progress and clinical translation challenges in the use of oncolytic bacteria for cancer therapy.Medical oncology (Northwood, London, England) · 2026Review
- An Integrated Workflow for the Purification and Fluorescence Imaging of Clostridioides difficile Spores Using Lanthanide Beta-Diketone Complexes.Methods in molecular biology (Clifton, N.J.) · 2026Article
- The ability of clostridium novyi-NT spores to induce apoptosis via the mitochondrial pathway in mice with HPV-positive cervical cancer tumors derived from the TC-1 cell line.BMC complementary medicine and therapies · 2024Article
- Clostridium septicum manifests a bile salt germinant response mediated by Clostridioides difficile csp gene orthologs.Communications biology · 2024Article
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Although Clostridium novyi-NT is an anti-cancer bacterial therapeutic which germinates within hypoxic tumors to kill cancer cells, the actual germination triggers for C. novyi-NT are still unknown. In this study, we screen candidate germinants using combinatorial experimental designs and discover by serendipity that D-valine is a potent germinant, inducing 50% spore germination at 4.2 mM concentration. Further investigation revealed that five D-valine analogs are also germinants and four of these analogs are enantiomeric pairs. This stereoflexible effect of L- and D-amino acids shows that spore germination is a complex process where enantiomeric interactions can be confounders. This study also identifies L-cysteine as a germinant, and hypoxanthine and inosine as co-germinants. Several other amino acids promote (L-valine, L-histidine, L-threonine and L-alanine) or inhibit (L-arginine, L-glycine, L-lysine, L-tryptophan) germination in an interaction-dependent manner. D-alanine inhibits all germination, even in complex growth media. This work lays the foundation for improving the germination efficacy of C. novyi-NT spores in tumors.
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