Gene interactions and pathways from curated databases and text-mining
J Immunol 2013, PMID: 23315073

p38α senses environmental stress to control innate immune responses via mechanistic target of rapamycin.

Katholnig, Karl; Kaltenecker, Christopher C; Hayakawa, Hiroko; Rosner, Margit; Lassnig, Caroline; Zlabinger, Gerhard J; Gaestel, Matthias; Müller, Mathias; Hengstschläger, Markus; Hörl, Walter H; Park, Jin Mo; Säemann, Marcus D; Weichhart, Thomas

The MAPK p38α senses environmental stressors and orchestrates inflammatory and immunomodulatory reactions. However, the molecular mechanism how p38α controls immunomodulatory responses in myeloid cells remains elusive. We found that in monocytes and macrophages, p38α activated the mechanistic target of rapamycin (mTOR) pathway in vitro and in vivo. p38α signaling in myeloid immune cells promoted IL-10 but inhibited IL-12 expression via mTOR and blocked the differentiation of proinflammatory CD4(+) Th1 cells. Cellular stress induced p38α-mediated mTOR activation that was independent of PI3K but dependent on the MAPK-activated protein kinase 2 and on the inhibition of tuberous sclerosis 1 and 2, a negative regulatory complex of mTOR signaling. Remarkably, p38α and PI3K concurrently modulated mTOR to balance IL-12 and IL-10 expression. Our data link p38α to mTOR signaling in myeloid immune cells that is decisive for tuning the immune response in dependence on the environmental milieu.

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Text Mining Data

IL-10 ⊣ IL-12: " p38a signaling in myeloid immune cells promoted IL-10 but inhibited IL-12 expression via mTOR and blocked the differentiation of proinflammatory CD4 ( + ) Th1 cells "

IL-12 ⊣ p38a: " p38a signaling in myeloid immune cells promoted IL-10 but inhibited IL-12 expression via mTOR and blocked the differentiation of proinflammatory CD4 ( + ) Th1 cells "

IL-10 → p38a: " p38a signaling in myeloid immune cells promoted IL-10 but inhibited IL-12 expression via mTOR and blocked the differentiation of proinflammatory CD4 ( + ) Th1 cells "

tuberous sclerosis 1 ⊣ MAPK activated protein kinase 2: " Cellular stress induced p38a mediated mTOR activation that was independent of PI3K but dependent on the MAPK activated protein kinase 2 and on the inhibition of tuberous sclerosis 1 and 2, a negative regulatory complex of mTOR signaling "

mTOR → p38a: " Cellular stress induced p38a mediated mTOR activation that was independent of PI3K but dependent on the MAPK activated protein kinase 2 and on the inhibition of tuberous sclerosis 1 and 2, a negative regulatory complex of mTOR signaling "

Manually curated Databases

No curated data.