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2017 ; 23
(ä): 34-45
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Reciprocal Inflammatory Signaling Between Intestinal Epithelial Cells and
Adipocytes in the Absence of Immune Cells
#MMPMID28789943
Takahashi Y
; Sato S
; Kurashima Y
; Lai CY
; Otsu M
; Hayashi M
; Yamaguchi T
; Kiyono H
EBioMedicine
2017[Sep]; 23
(ä): 34-45
PMID28789943
show ga
Visceral fat accumulation as observed in Crohn's disease and obesity is linked to
chronic gut inflammation, suggesting that accumulation of gut adipocytes can
trigger local inflammatory signaling. However, direct interactions between
intestinal epithelial cells (IECs) and adipocytes have not been investigated, in
part because IEC physiology is difficult to replicate in culture. In this study,
we originally prepared intact, polarized, and cytokine responsive IEC monolayers
from primary or induced pluripotent stem cell-derived intestinal organoids by
simple and repeatable methods. When these physiological IECs were co-cultured
with differentiated adipocytes in Transwell, pro-inflammatory genes were induced
in both cell types, suggesting reciprocal inflammatory activation in the absence
of immunocompetent cells. These inflammatory responses were blocked by nuclear
factor-?B or signal transducer and activator of transcription 3 inhibition and by
anti-tumor necrosis factor- or anti-interleukin-6-neutralizing antibodies. Our
results highlight the utility of these monolayers for investigating IEC biology.
Furthermore, this system recapitulates the intestinal epithelium-mesenteric fat
signals that potentially trigger or worsen inflammatory disorders such as Crohn's
disease and obesity-related enterocolitis.