Turning a phage anti-defense weapon into an immunity trigger

Anna B. Adelstein; Naama Aviram

doi:10.1371/journal.pbio.3003978

September 16, 2026PLoS BiologyOpen Access

Turning a phage anti-defense weapon into an immunity trigger

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Key Points

To elucidate how the bacterial type II Panoptes immune system senses bacteriophage infection and triggers an immune response.
Analyzed the signaling dynamics of the type II Panoptes defense system during bacteriophage challenge.
Assessed how phage anti-defense mechanisms interact with bacterial steady-state regulatory signals.
Demonstrated that type II Panoptes relies on a persistent baseline signal under resting conditions rather than an infection-induced alarm.
Showed that phage-mediated elimination of this constitutive signal acts as the trigger that activates bacterial immunity.

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Implication

Mechanistic study reveals reversed immune signaling in bacteria via type II Panoptes, highlighting how phage-mediated suppression of basal signals triggers host defense.

Abstract

Most bacterial immune systems raise an alarm when they sense a phage. A new study in PLOS Biology shows how type II Panoptes reverses this logic by maintaining a quiet signal and sensing infection through its sudden disappearance.

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Cite This Study

Adelstein et al. (2026) studied this question.

synapsesocial.com/papers/6aad0ad5de0393d728b89245 https://doi.org/10.1371/journal.pbio.3003978

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Turning a phage anti-defense weapon into an immunity trigger

Key Points

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Implication

Abstract

Discussion

Cite This Study

Turning a phage anti-defense weapon into an immunity trigger

Key Points

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Implication

Abstract

Discussion

Cite This Study

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