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Downregulation of VEGFA inhibits proliferation, promotes apoptosis, and suppresses migration and invasion of renal clear cell carcinoma.

Zeng FC, Zeng MQ, Huang L, Li YL, Gao BM, Chen JJ, Xue RZ, Tang ZY - Onco Targets Ther (2016)

Bottom Line: Positive expression of VEGFA protein was 60.62% in RCCC tissue and 18.34% in adjacent tissue with statistically significant difference (P<0.001).VEGFA protein and mRNA expressions were higher in RCCC tissue than those in adjacent tissue (both P<0.01).After RCCC 786-O cells transfecting the VEGFA siRNA, the VEGFA mRNA and protein expressions and phosphoinositide 3-kinase and phosphorylated-AKT protein expressions were significantly decreased, cell proliferation was remarkably inhibited, cell apoptotic ratio was obviously increased, and migration distance and invasive cell number were markedly decreased compared to those in the NC group and the blank group (all P<0.05).

View Article: PubMed Central - PubMed

Affiliation: Department of Urology, Xiangya Hospital, Central South University, Changsha, People's Republic of China; Department of Urology, Hainan General Hospital, Haikou, People's Republic of China.

ABSTRACT

Objective: The aim of this study was to investigate the effects of vascular endothelial growth factor A (VEGFA) on cell proliferation, apoptosis, migration, and invasion in renal clear cell carcinoma (RCCC).

Methods: Between June 2012 and June 2015, RCCC tissues were obtained for the experimental group, and RCCC adjacent tumor-free kidney parenchyma tissues were obtained for the control group. VEGFA mRNA and protein expressions and phosphoinositide 3-kinase, serine/threonine-specific protein kinase (AKT), and phosphorylated-AKT protein expressions were detected. The chemically synthesized specific siRNA using RNA interference technology was used to inhibit VEGFA gene expression in human RCCC 786-O cells. The negative control (NC) group was transfected with NC sequence, and the blank group was transfected with no sequence. Flow cytometry, scratch test, and cell-penetrating experiment were used to detect cell proliferation, apoptosis, migration, and invasion of 786-O cells.

Results: Positive expression of VEGFA protein was 60.62% in RCCC tissue and 18.34% in adjacent tissue with statistically significant difference (P<0.001). VEGFA protein and mRNA expressions were higher in RCCC tissue than those in adjacent tissue (both P<0.01). VEGF expression in RCCC tissue was associated with Fuhrman grading and American Joint Committee on Cancer staging (both P<0.05). After RCCC 786-O cells transfecting the VEGFA siRNA, the VEGFA mRNA and protein expressions and phosphoinositide 3-kinase and phosphorylated-AKT protein expressions were significantly decreased, cell proliferation was remarkably inhibited, cell apoptotic ratio was obviously increased, and migration distance and invasive cell number were markedly decreased compared to those in the NC group and the blank group (all P<0.05).

Conclusion: Inhibition of VEGFA inhibited proliferation, promoted apoptosis, and suppressed migration and invasion of RCCC 786-O cells. VEGF has a potential role in diagnosis and therapy of RCCC.

No MeSH data available.


Related in: MedlinePlus

VEGFA protein expression.Notes: VEGFA protein positively expressed in RCCC tissues (A) and negatively expressed in adjacent tissues (B) detected by immunohistochemistry. Magnification ×400.Abbreviations: RCCC, renal clear cell carcinoma; VEGFA, vascular endothelial growth factor A.
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f1-ott-9-2131: VEGFA protein expression.Notes: VEGFA protein positively expressed in RCCC tissues (A) and negatively expressed in adjacent tissues (B) detected by immunohistochemistry. Magnification ×400.Abbreviations: RCCC, renal clear cell carcinoma; VEGFA, vascular endothelial growth factor A.

Mentions: Immunohistochemistry results showed that VEGFA stained darker in RCCC tissues than in the control group (Figure 1). In 35 cases of RCCC tissues, 21 cases had high expression of VEGFA, 14 cases had low expression of VEGFA, and the positive expression rate of VEGFA was 60.62% in RCCC tissues, while it was 18.34% in adjacent tissues, showing significant differences between the two groups (χ2=13.57, P<0.001) (Table 1). As shown in Table 2, VEGFA protein expression was not associated with sex and age (both P>0.05) but was associated with Fuhrman grading and AJCC staging (both P<0.05). The VEGFA protein expression in RCCC tissues was significantly higher than that in adjacent tumor-free kidney parenchyma tissues (3.35±1.12 vs 1.76±0.78; t=6.628, P<0.01) (Figure 2A). Besides, the VEGFA mRNA expression in RCCC tissues was also obviously higher than that in adjacent tissues (6.51±2.25 vs 2.17±0.91; t=9.947, P<0.01) (Figure 2B). VEGFA mRNA and protein expression levels were significantly positively correlated (r=0.878, P<0.001).


Downregulation of VEGFA inhibits proliferation, promotes apoptosis, and suppresses migration and invasion of renal clear cell carcinoma.

Zeng FC, Zeng MQ, Huang L, Li YL, Gao BM, Chen JJ, Xue RZ, Tang ZY - Onco Targets Ther (2016)

VEGFA protein expression.Notes: VEGFA protein positively expressed in RCCC tissues (A) and negatively expressed in adjacent tissues (B) detected by immunohistochemistry. Magnification ×400.Abbreviations: RCCC, renal clear cell carcinoma; VEGFA, vascular endothelial growth factor A.
© Copyright Policy
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4835130&req=5

f1-ott-9-2131: VEGFA protein expression.Notes: VEGFA protein positively expressed in RCCC tissues (A) and negatively expressed in adjacent tissues (B) detected by immunohistochemistry. Magnification ×400.Abbreviations: RCCC, renal clear cell carcinoma; VEGFA, vascular endothelial growth factor A.
Mentions: Immunohistochemistry results showed that VEGFA stained darker in RCCC tissues than in the control group (Figure 1). In 35 cases of RCCC tissues, 21 cases had high expression of VEGFA, 14 cases had low expression of VEGFA, and the positive expression rate of VEGFA was 60.62% in RCCC tissues, while it was 18.34% in adjacent tissues, showing significant differences between the two groups (χ2=13.57, P<0.001) (Table 1). As shown in Table 2, VEGFA protein expression was not associated with sex and age (both P>0.05) but was associated with Fuhrman grading and AJCC staging (both P<0.05). The VEGFA protein expression in RCCC tissues was significantly higher than that in adjacent tumor-free kidney parenchyma tissues (3.35±1.12 vs 1.76±0.78; t=6.628, P<0.01) (Figure 2A). Besides, the VEGFA mRNA expression in RCCC tissues was also obviously higher than that in adjacent tissues (6.51±2.25 vs 2.17±0.91; t=9.947, P<0.01) (Figure 2B). VEGFA mRNA and protein expression levels were significantly positively correlated (r=0.878, P<0.001).

Bottom Line: Positive expression of VEGFA protein was 60.62% in RCCC tissue and 18.34% in adjacent tissue with statistically significant difference (P<0.001).VEGFA protein and mRNA expressions were higher in RCCC tissue than those in adjacent tissue (both P<0.01).After RCCC 786-O cells transfecting the VEGFA siRNA, the VEGFA mRNA and protein expressions and phosphoinositide 3-kinase and phosphorylated-AKT protein expressions were significantly decreased, cell proliferation was remarkably inhibited, cell apoptotic ratio was obviously increased, and migration distance and invasive cell number were markedly decreased compared to those in the NC group and the blank group (all P<0.05).

View Article: PubMed Central - PubMed

Affiliation: Department of Urology, Xiangya Hospital, Central South University, Changsha, People's Republic of China; Department of Urology, Hainan General Hospital, Haikou, People's Republic of China.

ABSTRACT

Objective: The aim of this study was to investigate the effects of vascular endothelial growth factor A (VEGFA) on cell proliferation, apoptosis, migration, and invasion in renal clear cell carcinoma (RCCC).

Methods: Between June 2012 and June 2015, RCCC tissues were obtained for the experimental group, and RCCC adjacent tumor-free kidney parenchyma tissues were obtained for the control group. VEGFA mRNA and protein expressions and phosphoinositide 3-kinase, serine/threonine-specific protein kinase (AKT), and phosphorylated-AKT protein expressions were detected. The chemically synthesized specific siRNA using RNA interference technology was used to inhibit VEGFA gene expression in human RCCC 786-O cells. The negative control (NC) group was transfected with NC sequence, and the blank group was transfected with no sequence. Flow cytometry, scratch test, and cell-penetrating experiment were used to detect cell proliferation, apoptosis, migration, and invasion of 786-O cells.

Results: Positive expression of VEGFA protein was 60.62% in RCCC tissue and 18.34% in adjacent tissue with statistically significant difference (P<0.001). VEGFA protein and mRNA expressions were higher in RCCC tissue than those in adjacent tissue (both P<0.01). VEGF expression in RCCC tissue was associated with Fuhrman grading and American Joint Committee on Cancer staging (both P<0.05). After RCCC 786-O cells transfecting the VEGFA siRNA, the VEGFA mRNA and protein expressions and phosphoinositide 3-kinase and phosphorylated-AKT protein expressions were significantly decreased, cell proliferation was remarkably inhibited, cell apoptotic ratio was obviously increased, and migration distance and invasive cell number were markedly decreased compared to those in the NC group and the blank group (all P<0.05).

Conclusion: Inhibition of VEGFA inhibited proliferation, promoted apoptosis, and suppressed migration and invasion of RCCC 786-O cells. VEGF has a potential role in diagnosis and therapy of RCCC.

No MeSH data available.


Related in: MedlinePlus