What question did this study set out to answer?

To determine the transcriptional mechanisms through which the proinflammatory cytokines IL-1β and TNF-α induce secondary inflammatory mediators in differentiated human neuroprogenitor cells.

July 29, 2013PLoS ONEOpen Access

Induction of an Inflammatory Loop by Interleukin-1β and Tumor Necrosis Factor-α Involves NF-kB and STAT-1 in Differentiated Human Neuroprogenitor Cells

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Authors

SPSubbiah PugazhenthiUniversity of Colorado Hospital YZYuji ZhangUniversity of Maryland, Baltimore RBRon J. BouchardVeterans Health Administration

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Implication

Experimental study reveals IL-1β and TNF-α drive inflammatory loops in human neuroprogenitor cells via NF-kB and STAT-1, highlighting mechanisms of sustained neuroinflammation.

Key Points

To determine the transcriptional mechanisms through which the proinflammatory cytokines IL-1β and TNF-α induce secondary inflammatory mediators in differentiated human neuroprogenitor cells.
Exposed differentiated human neuroprogenitor cells to IL-1β and TNF-α.
Profiled cytokine and chemokine gene and protein expression using immune pathway-specific arrays, TaqMan low-density arrays, network motif analysis, and immunofluorescent staining.
Investigated nuclear translocation of NF-kB and STAT-1 alongside CXCL10 promoter activity using promoter mutagenesis.
IL-1β and TNF-α acted synergistically to upregulate multiple cytokines and chemokines, substantially increasing IL-8 and CXCL10 protein levels in neurons and glia.
Network motif analysis revealed 118 three-node regulatory motifs driven by the nuclear translocation of transcription factors NF-kB and STAT-1.
TNF-α induced CXCL10 promoter activity more robustly than IL-1β, and cytokine synergy was abolished following the mutation of ISRE or kB response elements.

Cite This Study

Pugazhenthi et al. (2013) studied this question.

synapsesocial.com/papers/6a8cde0bcfe29b6304990aac https://doi.org/10.1371/journal.pone.0069585

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Implication

Experimental study reveals IL-1β and TNF-α drive inflammatory loops in human neuroprogenitor cells via NF-kB and STAT-1, highlighting mechanisms of sustained neuroinflammation.

Induction of an Inflammatory Loop by Interleukin-1β and Tumor Necrosis Factor-α Involves NF-kB and STAT-1 in Differentiated Human Neuroprogenitor Cells

Discussion

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Implication

Key Points

Cite This Study

Induction of an Inflammatory Loop by Interleukin-1β and Tumor Necrosis Factor-α Involves NF-kB and STAT-1 in Differentiated Human Neuroprogenitor Cells

Discussion

Member takes

Implication

Key Points

Cite This Study

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