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2017 ; 81
(1-1
): 99-112
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Trinitrobenzene sulfonic acid-induced intestinal injury in neonatal mice
activates transcriptional networks similar to those seen in human necrotizing
enterocolitis
#MMPMID27656771
MohanKumar K
; Namachivayam K
; Cheng F
; Jiang RH
; Flores-Torres J
; Torres BA
; Maheshwari A
Pediatr Res
2017[Jan]; 81
(1-1
): 99-112
PMID27656771
show ga
BACKGROUND: We have shown previously that enteral administration of 2, 4,
6-trinitrobenzene sulfonic acid in 10-d-old C57BL/6 pups produces an acute
necrotizing enterocolitis with histopathological and inflammatory changes similar
to human necrotizing enterocolitis (NEC). To determine whether murine neonatal 2,
4, 6-trinitrobenzene sulfonic acid (TNBS)-mediated intestinal injury could be
used as a NEC model, we compared gene expression profiles of TNBS-mediated
intestinal injury and NEC. METHODS: Whole-genome microarray analysis was
performed on proximal colon from control and TNBS-treated pups (n = 8/group). For
comparison, we downloaded human microarray data of NEC (n = 5) and surgical
control (n = 4) from a public database. Data were analyzed using the software
programs Partek Genomics Suite and Ingenuity Pathway Analysis. RESULTS: We
detected extensive changes in gene expression in murine TNBS-mediated intestinal
injury and human NEC. Using fold-change cut-offs of ±1.5, we identified 4,440
differentially-expressed genes (DEGs) in murine TNBS-mediated injury and 1,377 in
NEC. Murine TNBS-mediated injury and NEC produced similar changes in expression
of orthologous genes (r = 0.611, P < 0.001), and also activated nearly-identical
biological processes and pathways. Lipopolysaccharide was top predicted upstream
regulator in both the murine and human datasets. CONCLUSION: Murine neonatal
TNBS-mediated enterocolitis and human NEC activate nearly-identical biological
processes, signaling pathways, and transcriptional networks.