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2014 ; 25
(6
): 719-34
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Depletion of carcinoma-associated fibroblasts and fibrosis induces
immunosuppression and accelerates pancreas cancer with reduced survival
#MMPMID24856586
Özdemir BC
; Pentcheva-Hoang T
; Carstens JL
; Zheng X
; Wu CC
; Simpson TR
; Laklai H
; Sugimoto H
; Kahlert C
; Novitskiy SV
; De Jesus-Acosta A
; Sharma P
; Heidari P
; Mahmood U
; Chin L
; Moses HL
; Weaver VM
; Maitra A
; Allison JP
; LeBleu VS
; Kalluri R
Cancer Cell
2014[Jun]; 25
(6
): 719-34
PMID24856586
show ga
Pancreatic ductal adenocarcinoma (PDAC) is associated with marked fibrosis and
stromal myofibroblasts, but their functional contribution remains unknown.
Transgenic mice with the ability to delete ?SMA(+) myofibroblasts in pancreatic
cancer were generated. Depletion starting at either noninvasive precursor
(pancreatic intraepithelial neoplasia) or the PDAC stage led to invasive,
undifferentiated tumors with enhanced hypoxia, epithelial-to-mesenchymal
transition, and cancer stem cells, with diminished animal survival. In PDAC
patients, fewer myofibroblasts in their tumors also correlated with reduced
survival. Suppressed immune surveillance with increased CD4(+)Foxp3(+) Tregs was
observed in myofibroblast-depleted mouse tumors. Although myofibroblast-depleted
tumors did not respond to gemcitabine, anti-CTLA4 immunotherapy reversed disease
acceleration and prolonged animal survival. This study underscores the need for
caution in targeting carcinoma-associated fibroblasts in PDAC.