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2015 ; 8
(9
): 9932-40
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Expression of Robo protein in bladder cancer tissues and its effect on the growth
of cancer cells by blocking Robo protein
#MMPMID26617702
Li Y
; Cheng H
; Xu W
; Tian X
; Li X
; Zhu C
Int J Clin Exp Pathol
2015[]; 8
(9
): 9932-40
PMID26617702
show ga
This study aimed to detect the expression of Slit signaling protein ligand Robo
protein in human bladder cancer and para-carcinoma tissue, and observe the tumor
cell survival and growth by inoculating the bladder cancer cells with the blocked
signaling protein into the subcutaneous tissue of nude mice. The expression of
Robo protein was detected in T24 cells in human bladder uroepithelium carcinoma
and cultivated human bladder uroepithelium carcinoma confirmed by pathological
diagnosis. The cultivated T24 cells were coated by the protein antibody and human
bladder uroepithelium carcinoma T24 tumor-bearing mice model was established. The
tumor cell survival and growth were observed in the antibody coating group and
non-coating group. The tumor body size was measured. The immunohistochemical
detection showed that Robo protein isoforms Robo1 and Robo 4 were expressed in
T24 cells of cancer tissues, paracarcinoma tissues and cultured human
uroepithelium carcinoma. The expression of Robo1 was significantly higher than
that of Robo4 (P<0.05). The cancer cells could be detected in nodular tumor of
mice in each group. The volume of the tumor-bearing mice in the nodular tumor of
the non-coating group was larger than that of anti-Robol antibody coating group
and the difference was statistically significant (P<0.01). There was no
significant difference in tumor volume between anti-Robo4 antibody coating group
and non-coating group (P>0.05); The difference was statistically significant
compared with the anti-Robo1 antibody coating group (P<0.01). In conclusion, Robo
protein isoforms Robo1 and Robo4 were expressed in human bladder cancer T24
cells. To block Robo4 signal protein had little effect on the survival and growth
of the transplantation tumor and to block Robo1 signal protein would seriously
affect the survival and growth of the transplantation tumor, suggesting that
Robo1 might play an important role in the growth and metastasis of bladder
cancer, and might become a new target for the treatment of human bladder cancer
and drug research.