Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=28507145
&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 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 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\28507145
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Proc+Natl+Acad+Sci+U+S+A
2017 ; 114
(22
): 5677-5682
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
In vivo photolabeling of tumor-infiltrating cells reveals highly regulated egress
of T-cell subsets from tumors
#MMPMID28507145
Torcellan T
; Hampton HR
; Bailey J
; Tomura M
; Brink R
; Chtanova T
Proc Natl Acad Sci U S A
2017[May]; 114
(22
): 5677-5682
PMID28507145
show ga
Immune therapy is rapidly gaining prominence in the clinic as a major weapon
against cancer. Whereas much attention has been focused on the infiltration of
tumors by immune cells, the subsequent fate of these infiltrates remains largely
unexplored. We therefore established a photoconversion-based model that allowed
us to label tumor-infiltrating immune cells and follow their migration. Using
this system, we identified a population of tumor-experienced cells that emigrate
from primary tumors to draining lymph nodes via afferent lymphatic vessels.
Although the majority of tumor-infiltrating cells were myeloid, T cells made up
the largest population of tumor-egressing leukocytes. Strikingly, the subset
composition of tumor-egressing T cells was greatly skewed compared with those
that had infiltrated the tumor and those resident in the draining lymph node.
Some T-cell subsets such as CD8(+) T cells emigrated more readily; others
including CD4(-)CD8(-) T cells were preferentially retained, suggesting that
specific mechanisms guide immune cell egress from tumors. Furthermore,
tumor-egressing T cells were more activated and displayed enhanced effector
function in comparison with their lymph node counterparts. Finally, we
demonstrated that tumor-infiltrating T cells migrate to distant secondary tumors
and draining lymph nodes, highlighting a mechanism whereby tumor-experienced
effector T cells may mediate antitumor immunity at metastatic sites. Thus, our
results provide insights into migration and function of tumor-infiltrating immune
cells and the role of these cells in tumor immunity outside of primary tumor
deposits.