What does this research mean for the field?

Exposure to the pro-inflammatory cytokines TNF-α and IFN-γ drives human astrocytes into a neurotoxic state that induces neuronal hyperexcitability, a response that is distinct from rodent astrocytes and is exacerbated by cellular senescence. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To identify inflammatory triggers that induce neurotoxic phenotypes in human iPSC-derived astrocytes and evaluate how cellular aging modulates these responses.

September 7, 2026Scientific ReportsOpen Access

TNF-α and IFN-γ induce neurotoxicity in human iPSC-derived astrocytes that is enhanced by aging

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Authors

HKH KobayashiFujifilm (Japan)KMKiyohiro MaedaFujifilm (Japan)TWTakashi Wakui

Discussion

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Implication

In vitro stem cell study reveals TNF-α and IFN-γ induce neurotoxic astrocyte states amplified by aging, highlighting targets for neurodegenerative disease.

Key Points

To identify inflammatory triggers that induce neurotoxic phenotypes in human iPSC-derived astrocytes and evaluate how cellular aging modulates these responses.
Exposed human induced pluripotent stem cell (iPSC)-derived astrocytes, astrocyte-neuron co-cultures, and neuron-astrocyte-microglia tri-cultures to pro-inflammatory cytokines (TNF-α, IFN-γ) and lipopolysaccharide.
Conducted compound screening using Janus kinase (JAK) inhibitors and evaluated astrocyte-mediated neurotoxicity alongside neuronal hyperexcitability in senescent and non-senescent conditions.
Combined treatment with TNF-α and IFN-γ drove human astrocytes into a neurotoxic state and triggered neuronal hyperexcitability in co-cultures.
Janus kinase inhibitors successfully prevented human astrocytes from acquiring the neurotoxic phenotype following TNF-α and IFN-γ exposure.
Astrocytes exhibiting senescent features mounted markedly enhanced neurotoxic responses upon cytokine stimulation.

Cite This Study

Kobayashi et al. (2026) studied this question.

synapsesocial.com/papers/6a9e85c4c3034f961570e2bf https://doi.org/10.1038/s41598-026-69225-8

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September 7, 2026Scientific ReportsOpen Access

TNF-α and IFN-γ induce neurotoxicity in human iPSC-derived astrocytes that is enhanced by aging

View Full Paper

Ask AI

Bookmark

Authors

HKH KobayashiFujifilm (Japan)KMKiyohiro MaedaFujifilm (Japan)TWTakashi Wakui

Discussion

Member takes

Implication

In vitro stem cell study reveals TNF-α and IFN-γ induce neurotoxic astrocyte states amplified by aging, highlighting targets for neurodegenerative disease.

Key Points

To identify inflammatory triggers that induce neurotoxic phenotypes in human iPSC-derived astrocytes and evaluate how cellular aging modulates these responses.
Exposed human induced pluripotent stem cell (iPSC)-derived astrocytes, astrocyte-neuron co-cultures, and neuron-astrocyte-microglia tri-cultures to pro-inflammatory cytokines (TNF-α, IFN-γ) and lipopolysaccharide.
Conducted compound screening using Janus kinase (JAK) inhibitors and evaluated astrocyte-mediated neurotoxicity alongside neuronal hyperexcitability in senescent and non-senescent conditions.
Combined treatment with TNF-α and IFN-γ drove human astrocytes into a neurotoxic state and triggered neuronal hyperexcitability in co-cultures.
Janus kinase inhibitors successfully prevented human astrocytes from acquiring the neurotoxic phenotype following TNF-α and IFN-γ exposure.
Astrocytes exhibiting senescent features mounted markedly enhanced neurotoxic responses upon cytokine stimulation.

Cite This Study

Kobayashi et al. (2026) studied this question.

synapsesocial.com/papers/6a9e85c4c3034f961570e2bf https://doi.org/10.1038/s41598-026-69225-8

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