Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=28178651
&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 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\28178651
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Oncotarget
2017 ; 8
(9
): 15744-15762
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Stromal fibroblasts present in breast carcinomas promote tumor growth and
angiogenesis through adrenomedullin secretion
#MMPMID28178651
Benyahia Z
; Dussault N
; Cayol M
; Sigaud R
; Berenguer-Daizé C
; Delfino C
; Tounsi A
; Garcia S
; Martin PM
; Mabrouk K
; Ouafik L
Oncotarget
2017[Feb]; 8
(9
): 15744-15762
PMID28178651
show ga
Tumor- or cancer-associated fibroblasts (TAFs or CAFs) are active players in
tumorigenesis and exhibit distinct angiogenic and tumorigenic properties.
Adrenomedullin (AM), a multifunctional peptide plays an important role in
angiogenesis and tumor growth through its receptors calcitonin receptor-like
receptor/receptor activity modifying protein-2 and -3 (CLR/RAMP2 and CLR/RAMP3).
We show that AM and AM receptors mRNAs are highly expressed in CAFs prepared from
invasive breast carcinoma when compared to normal fibroblasts. Immunostaining
demonstrates the presence of immunoreactive AM and AM receptors in the CAFs (n =
9). The proliferation of CAFs is decreased by anti-AM antibody (?AM) and anti-AM
receptors antibody (?AMR) treatment, suggesting that AM may function as a potent
autocrine/paracrine growth factor. Systemic administration of ?AMR reduced
neovascularization of in vivo Matrigel plugs containing CAFs as demonstrated by
reduced numbers of the vessel structures, suggesting that AM is one of the
CAFs-derived factors responsible for endothelial cell-like and pericytes
recruitment to built a neovascularization. We show that MCF-7 admixed with CAFs
generated tumors of greater volume significantly different from the MCF-7
xenografts in nude mice due in part to the induced angiogenesis. ?AMR and AM22-52
therapies significantly suppressed the growth of CAFs/MCF-7 tumors. Histological
examination of tumors treated with AM22-52 and aAMR showed evidence of disruption
of tumor vasculature with depletion of vascular endothelial cells, induced
apoptosis and decrease of tumor cell proliferation. Our findings highlight the
importance of CAFs-derived AM pathway in growth of breast carcinoma and in
neovascularization by supplying and amplifying signals that are essential for
pathologic angiogenesis.