What question did this study set out to answer?

To delineate how excessive mechanical loading shifts joint-resident cells from reversible mechanoadaptation into self-sustaining innate immune dysregulation in osteoarthritis.

August 16, 2026Frontiers in ImmunologyOpen Access

From mechanical adaptation to innate immune reprogramming in osteoarthritis: a load-immunity framework

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Authors

SZShiguo ZuoInner Mongolia Autonomous Region Hospital of Traditional Chinese Medicine LHLijun HeZhujiang Hospital ZHZhiying HouInner Mongolia Autonomous Region Hospital of Traditional Chinese Medicine

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Implication

Mechanistic review outlines how aberrant joint loading drives sustained innate immune reprogramming in osteoarthritis, highlighting targets for stage-specific therapeutic intervention.

Key Points

To delineate how excessive mechanical loading shifts joint-resident cells from reversible mechanoadaptation into self-sustaining innate immune dysregulation in osteoarthritis.
Synthesized preclinical and human evidence across a three-level framework: initiating mechanical loading, intracellular stress amplification, and multicellular tissue crosstalk.
Evaluated the context-dependent regulatory roles of mechanosensors (Piezo1, TRPV4) and inflammatory cascades (NLRP3 inflammasome, cGAS-STING pathway).
Innate immune reprogramming is sustained intracellularly via mechanical calcium overload, mitochondrial stress, and activation of the NLRP3 and cGAS-STING pathways.
Intercellular inflammatory signals spread among chondrocytes, macrophages, synoviocytes, bone cells, and sensory neurons, in part via extracellular vesicle-mediated mitochondrial DNA transfer.
Mechanical load normalization provides the clearest immediate clinical rationale, while molecular therapies require stage-targeted delivery that preserves baseline physiological mechanoadaptation.

Cite This Study

Zuo et al. (2026) studied this question.

synapsesocial.com/papers/6a817980f2fb91fc834aca21 https://doi.org/10.3389/fimmu.2026.1931112

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Implication

Mechanistic review outlines how aberrant joint loading drives sustained innate immune reprogramming in osteoarthritis, highlighting targets for stage-specific therapeutic intervention.

From mechanical adaptation to innate immune reprogramming in osteoarthritis: a load-immunity framework

Discussion

Member takes

Implication

Key Points

Cite This Study

From mechanical adaptation to innate immune reprogramming in osteoarthritis: a load-immunity framework

Discussion

Member takes

Implication

Key Points

Cite This Study

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