Related Experiment Video
Updated: Aug 14, 2026
09:40
Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins
Published on: June 11, 2015
Beyond the growth curve: CBASS stops phages without killing
1Molecular Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
Cell Host & Microbe
|August 12, 2026
Summary
Bacterial anti-phage systems can protect hosts without cell death. Huiting et al. demonstrate a CBASS effector that blocks phage production while keeping bacteria alive, redefining bacterial immune outcomes.
Area of Science:
- Bacteriology
- Molecular Biology
- Immunology
Background:
- Bacterial anti-phage systems are crucial for microbial survival.
- These systems are often studied using methods that suggest cell sacrifice as a primary defense mechanism.
Purpose of the Study:
- To investigate the immune outcome of a specific bacterial anti-phage system at native expression levels.
- To challenge the prevailing assumption that bacterial defense mechanisms necessitate host cell death.
Main Methods:
- Studied a membrane-associated cyclic-боре-12-oligonucleotide synthase (CBASS) effector.
- Examined the effector's function at native expression levels in bacteria.
- Assessed phage production and host-cell viability.
Main Results:
- The CBASS effector effectively blocks phage production.
- Host-cell viability is preserved during phage inhibition.
- This contrasts with outcomes observed in population-level assays or effector overexpression studies.
Conclusions:
- Bacterial anti-phage systems, specifically CBASS effectors, can inhibit phage replication without causing host cell death.
- The study redefines the understanding of immune outcomes in bacterial defense systems.
- Native expression levels are critical for observing non-lethal defense mechanisms.
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