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2016 ; 7
(37
): 59877-59891
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Combined cell surface carbonic anhydrase 9 and CD147 antigens enable
high-efficiency capture of circulating tumor cells in clear cell renal cell
carcinoma patients
#MMPMID27494883
Liu S
; Tian Z
; Zhang L
; Hou S
; Hu S
; Wu J
; Jing Y
; Sun H
; Yu F
; Zhao L
; Wang R
; Tseng HR
; Zhau HE
; Chung LW
; Wu K
; Wang H
; Wu JB
; Nie Y
; Shao C
Oncotarget
2016[Sep]; 7
(37
): 59877-59891
PMID27494883
show ga
Circulating tumor cells (CTCs) have emerged as promising tools for noninvasive
cancer detection and prognosis. Most conventional approaches for capturing CTCs
use an EpCAM-based enrichment strategy, which does not work well in cancers that
show low or no expression of EpCAM, such as renal cell carcinoma (RCC). In this
study, we developed a new set of cell surface markers including CA9 and CD147 as
alternative CTC-capture antigens specifically designed for RCC patients. We
showed that the expression of both CA9 and CD147 was prevalent in a RCC patient
cohort (n=70) by immunohistochemical analysis, with both molecules in combination
covering 97.1% of cases. The NanoVelcro platform combined with CA9-/CD147-capture
antibodies demonstrated significantly higher efficiency for capturing both
CTC-mimicking renal cancer cells and RCC CTCs in peripheral blood, compared to
the conventional EpCAM-based method. Using immunofluorescence cytological
validation at the single-cell level, we were able to identify bona fide CTCs in
RCC patient blood following the well-accepted criteria in our CTC-capture system.
We further demonstrated a significant association of CTC numbers as well as the
CTC expression status of Vimentin, a mesenchymal marker, with disease
progression, including pathologic features and clinical staging. These results
provide new insights into developing novel, effective targets/approaches for
capturing CTCs, making CTCs a valuable tool for improved cancer detection,
prognosis and treatment in RCC.