Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\28333977
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 PLoS+One
2017 ; 12
(3
): e0174126
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Transition into inflammatory cancer-associated adipocytes in breast cancer
microenvironment requires microRNA regulatory mechanism
#MMPMID28333977
Lee J
; Hong BS
; Ryu HS
; Lee HB
; Lee M
; Park IA
; Kim J
; Han W
; Noh DY
; Moon HG
PLoS One
2017[]; 12
(3
): e0174126
PMID28333977
show ga
The role of adipocytes in cancer microenvironment has gained focus during the
recent years. However, the characteristics of the cancer-associated adipocytes
(CAA) in human breast cancer tissues and the underlying regulatory mechanism are
not clearly understood. We reviewed pathology specimens of breast cancer patients
to understand the morphologic characteristics of CAA, and profiled the mRNA and
miRNA expression of CAA by using indirect co-culture system in vitro. The CAAs in
human breast cancers showed heterogeneous topographic relationship with breast
cancer cells within the breast microenvironment. The CAAs exhibited the
characteristics of de-differentiation determined by their microscopic appearance
and the expression levels of adipogenic markers. Additionally, the 3T3-L1
adipocytes indirectly co-cultured with breast cancer cells showed up-regulation
of inflammation-related genes including Il6 and Ptx3. The up-regulation of IL6 in
CAA was further observed in human breast cancer tissues. miRNA array of
indirectly co-cultured 3T3-L1 cells showed increased expression of mmu-miR-5112
which may target Cpeb1. Cpeb1 is a negative regulator of Il6. The suppressive
role of mmu-miR-5112 was confirmed by dual luciferase reporter assay, and
mmu-miR-5112-treated adipocytes showed up-regulation of Il6. The transition of
adipocytes into more inflammatory CAA resulted in proliferation-promoting effect
in ER positive breast cancer cells such as MCF7 and ZR-75-1 but not in ER
negative cells. In this study, we have determined the de-differentiated and
inflammatory natures of CAA in breast cancer microenvironment. Additionally, we
propose a miRNA-based regulatory mechanism underlying the process of acquiring
inflammatory phenotypes in CAA.