Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=28667694
&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 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 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
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\28667694
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Cancer+Sci
2017 ; 108
(9
): 1803-1810
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Accelerated growth of B16BL6 tumor in mice through efficient uptake of their own
exosomes by B16BL6 cells
#MMPMID28667694
Matsumoto A
; Takahashi Y
; Nishikawa M
; Sano K
; Morishita M
; Charoenviriyakul C
; Saji H
; Takakura Y
Cancer Sci
2017[Sep]; 108
(9
): 1803-1810
PMID28667694
show ga
Exosomes are extracellular vesicles released by various cell types and play roles
in cell-cell communication. Several studies indicate that cancer cell-derived
exosomes play important pathophysiological roles in tumor progression.
Biodistribution of cancer cell-derived exosomes in tumor tissue is an important
factor for determining their role in tumor proliferation; however, limited
studies have assessed the biodistribution of exosomes in tumor tissues. In the
present study, we examined the effect of cancer-cell derived exosomes on tumor
growth by analyzing their biodistribution. Murine melanoma B16BL6-derived
exosomes increased the proliferation and inhibited the apoptosis of B16BL6 cells,
which was associated with an increase and decrease in the levels of
proliferation- and apoptosis-related proteins, respectively. GW4869-induced
inhibition of exosome secretion decreased the proliferation of B16BL6 cells, and
treatment of GW4869-treated cells with B16BL6-derived exosomes restored their
proliferation. Next, we treated B16BL6 tumors in mice with B16BL6-derived
exosomes and examined the biodistribution and cellular uptake of these exosomes.
After the intratumoral injection of radiolabeled B16BL6-derived exosomes, most
radioactivity was detected within the tumor tissues of mice. Fractionation of
cells present in the tumor tissue showed that fluorescently labeled exosomes were
mainly taken up by B16BL6 cells. Moreover, intratumoral injection of
B16BL6-derived exosomes promoted tumor growth, whereas intratumoral injection of
GW4869 suppressed tumor growth. These results indicate that B16BL6 cells secrete
and take up their own exosomes to induce their proliferation and inhibit their
apoptosis, which promotes tumor progression.