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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 World+J+Gastroenterol
2015 ; 21
(47
): 13259-67
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Evaluation of epithelial-mesenchymal transitioned circulating tumor cells in
patients with resectable gastric cancer: Relevance to therapy response
#MMPMID26715808
Li TT
; Liu H
; Li FP
; Hu YF
; Mou TY
; Lin T
; Yu J
; Zheng L
; Li GX
World J Gastroenterol
2015[Dec]; 21
(47
): 13259-67
PMID26715808
show ga
AIM: To evaluate the epithelial-to-mesenchymal transition (EMT) of circulating
tumor cells (CTCs) in gastric cancer patients. METHODS: We detected tumor cells
for expression of four epithelial (E(+)) transcripts (keratins 8, 18, and 19 and
epithelial cell adhesion molecule) and two mesenchymal (M(+)) transcripts
(Vimentin and Twist) by a quantifiable, dual-colorimetric RNA-in situ
hybridization assay. Between July 2014 and October 2014, 44 patients with gastric
cancer were recruited for CTC evaluation. Blood samples were obtained from
selected patients during the treatment course [before surgery, after surgery and
at the 6(th) cycle of XELOX based chemotherapy (about 6 mo postoperatively)].
RESULTS: We found the EMT phenomenon in which there were a few biphenotypic
E(+)/M(+) cells in primary human gastric cancer specimens. Of the 44 patients,
the presence of CTCs was reported in 35 (79.5%) patients at baseline. Five types
of cells including from exclusively E(+) CTCs to intermediate CTCs and
exclusively M(+) CTCs were identified (4 patients with M(+) CTCs and 10 patients
with M(+) or M(+) > E(+) CTCs). Further, a chemotherapy patient having
progressive disease showed a proportional increase of mesenchymal CTCs in the
post-treatment blood specimens. We used NCI-N87 cells to analyze the linearity
and sensitivity of CanPatrol(TM) system and the correlation coefficient (R(2))
was 0.999. CONCLUSION: The findings suggest that the EMT phenomenon was both in a
few cells of primary tumors and abundantly in CTCs from the blood of gastric
cancer patients, which might be used to monitor therapy response.