Aliquots of whole
cell extracts from sixteen selected ccRCC tumor samples and its corresponding adjacent tissues were analyzed by western blotting. The blots were then scanned and quantified with Quantity One software. The significant difference is expressed as *p<0.05, **p<0.01. Figure 3 hMOF is downregulated in different pathological diagnosis of human kidney cancer. A. Relative mRNA expression levels of hMOF in different type of kidney cancer. Total RNA was isolated from four paired pathological diagnosed ccRCC, chRCC, paRCC, unclassified RCC, respectively and matched normal/adjacent kidney tissues. Relative mRNA expression levels of hMOF and CA9 P005091 clinical trial were analyzed by qRT-PCR. Error bars represent the standard error of the mean of 3 independent experiments. B. Log2 ratio of hMOF and CA9 mRNA expression in four different types of human kidney cancer. Ratio of mRNA expression is displayed as a ratio of expression of hMOF or CA9 gene in ccRCC versus matched normal tissues. C. Analysis of werstern blotting. Equivalent total protein amount of whole cell extracts from four different pathological diagnosed kidney cancers (ccRCC, chRCC, paRCC and unRCC) and its corresponding normal/adjacent tissues were subjected to SDS-PAGE in 12% gels, and proteins were detected by western blotting with indicated antibodies. D. Summarization
of hMOF and CA9 expression in RCC. Total cases of ccRCC (21) include four initial selected ccRCC (data not shown), sixteen additional Selleckchem RG7420 ccRCC and one case used in comparing experiment. Reduction of hMOF protein in human Selleck IBET762 primary renal click here cell carcinoma tissues The results of RT-PCR analysis clearly show frequent downregulation of hMOF gene expression in RCC. To determine whether the reduction of hMOF mRNA expression resulted in decreasing of hMOF protein levels, western blotting and immunohistochemical staining approaches were used. As shown in Figure 1C, aliquots of whole cell extract from four paired initially selected ccRCC and matched normal tissues were analyzed by western blotting with indicated antibodies.
Similar to our expected results, significant reduction of hMOF protein in ccRCC compared to those of matched normal tissues were detected (p<0.05). Simultaneously, the acetylation status of histone H4K16 was also significantly reduced or lost (p<0.05). To further confirm these results, we performed immunohistochemical staining for hMOF and histone H4K16 acetylation in the formalin fixed paraffin embedded tissue sections of same four selected ccRCC patients. The results revealed that both the hMOF protein levels and the histone H4K16 acetylation status were markedly reduced (score 1 to 2 for hMOF staining, and score 0–1 for H4K16Ac staining) in all ccRCC tissues compared to adjacent tissues. For example, the results of immunohistochemical staining for hMOF and H4K16Ac are presented in Figure 1D. Weak staining of hMOF and no staining of H4K16Ac in the ccRCC paraffin embedded tissue sections were detected.