Gene interactions and pathways from curated databases and text-mining
J Immunol 2006, PMID: 16622004

Notch-1 up-regulation and signaling following macrophage activation modulates gene expression patterns known to affect antigen-presenting capacity and cytotoxic activity.

Monsalve, Eva; Pérez, Miguel A; Rubio, Antonio; Ruiz-Hidalgo, María José; Baladrón, Victoriano; García-Ramírez, José J; Gómez, Juan C; Laborda, Jorge; Díaz-Guerra, María José M

Notch signaling has been extensively implicated in cell-fate determination along the development of the immune system. However, a role for Notch signaling in fully differentiated immune cells has not been clearly defined. We have analyzed the expression of Notch protein family members during macrophage activation. Resting macrophages express Notch-1, -2, and -4, as well as the Notch ligands Jagged-1 and -2. After treatment with LPS and/or IFN-gamma, we observed a p38 MAPK-dependent increase in Notch-1 and Jagged-1 mRNA and protein levels. To study the role of Notch signaling in macrophage activation, we forced the transient expression of truncated, active intracellular Notch-1 (Notch-IC) proteins in Raw 264.7 cells and analyzed their effects on the activity of transcription factors involved in macrophage activation. Notch-IC increased STAT-1-dependent transcription. Furthermore, Raw 264.7 Notch-IC stable transfectants increased STAT1-dependent transcription in response to IFN-gamma, leading to higher expression of IFN regulatory factor-1, suppressor of cytokine signaling-1, ICAM-1, and MHC class II proteins. This effect was independent from an increase of STAT1 Tyr or Ser phosphorylation. However, inducible NO synthase expression and NO production decreased under the same conditions. Our results show that Notch up-regulation and subsequent signaling following macrophage activation modulate gene expression patterns known to affect the function of mature macrophages.

Diseases/Pathways annotated by Medline MESH: Inflammation
Document information provided by NCBI PubMed

Text Mining Data

p38 → MAPK: " After treatment with LPS and/or IFN-gamma, we observed a p38 MAPK dependent increase in Notch-1 and Jagged-1 mRNA and protein levels "

Notch-1 → MAPK: " After treatment with LPS and/or IFN-gamma, we observed a p38 MAPK dependent increase in Notch-1 and Jagged-1 mRNA and protein levels "

suppressor of cytokine signaling-1 → IFN-gamma: " Furthermore, Raw 264.7 Notch-IC stable transfectants increased STAT1 dependent transcription in response to IFN-gamma , leading to higher expression of IFN regulatory factor-1, suppressor of cytokine signaling-1 , ICAM-1, and MHC class II proteins "

suppressor of cytokine signaling-1 → Notch-IC: " Furthermore, Raw 264.7 Notch-IC stable transfectants increased STAT1 dependent transcription in response to IFN-gamma, leading to higher expression of IFN regulatory factor-1, suppressor of cytokine signaling-1 , ICAM-1, and MHC class II proteins "

MHC class II → IFN-gamma: " Furthermore, Raw 264.7 Notch-IC stable transfectants increased STAT1 dependent transcription in response to IFN-gamma , leading to higher expression of IFN regulatory factor-1, suppressor of cytokine signaling-1, ICAM-1, and MHC class II proteins "

MHC class II → Notch-IC: " Furthermore, Raw 264.7 Notch-IC stable transfectants increased STAT1 dependent transcription in response to IFN-gamma, leading to higher expression of IFN regulatory factor-1, suppressor of cytokine signaling-1, ICAM-1, and MHC class II proteins "

ICAM-1 → IFN-gamma: " Furthermore, Raw 264.7 Notch-IC stable transfectants increased STAT1 dependent transcription in response to IFN-gamma , leading to higher expression of IFN regulatory factor-1, suppressor of cytokine signaling-1, ICAM-1 , and MHC class II proteins "

ICAM-1 → Notch-IC: " Furthermore, Raw 264.7 Notch-IC stable transfectants increased STAT1 dependent transcription in response to IFN-gamma, leading to higher expression of IFN regulatory factor-1, suppressor of cytokine signaling-1, ICAM-1 , and MHC class II proteins "

Notch-IC → IFN-gamma: " Furthermore, Raw 264.7 Notch-IC stable transfectants increased STAT1 dependent transcription in response to IFN-gamma , leading to higher expression of IFN regulatory factor-1, suppressor of cytokine signaling-1, ICAM-1, and MHC class II proteins "

Manually curated Databases

No curated data.