Ingenuity pathway analysis: Heat map showing the association of the identified metastamiRs in multiple tumor systems.
Results from bio-informatics across the ingenuity pathway, miRCancer, and literature data-mining endorsed the expression of these miRNAs in multiple tumor systems and showed their role in metastasis, identifying them as metastamiRs.
Since it is important to characterize each of the reorganized miRNAs in neuroblastoma metastasis, and this activity was within the scope of this study, we extensively investigated the role of each miRNA in tumor progression and metastasis in multiple tumor systems, including neuroblastoma.
Examining this topic further, we validated the most distinctly deregulated over- and under expressed miRNAs by RT-qPCR, utilized traverse analysis of altered miRNAs between the sample groups, characterized the reorganized miRNAs by compiling their interactions in ingenuity pathway analysis, expression in multiple tumor systems, and their functional role in metastasis and tumor progression.
Evidently, genes with genetic rearrangements in coding regions play concomitant roles in multiple tumor systems, such as chronic myeloid leukemia, melanoma, small cell carcinoma, lung carcinoma, mammary tumor, prostate cancer, pancreatic cancer, colon adenocarcinoma, squamous cell carcinoma, and non-small cell lung adenocarcinoma.
Calorie restriction (CR), a reduced-calorie dietary regimen typically involving a 20 40% reduction in calorie consumption, prevents or reverses obesity, and inhibits mammary and other types of cancer in multiple tumor model systems.
Our work supports and expands over a decade of research that has proven that pp32 acts like a tumor suppressor gene in multiple models and tumor systems [8], [9], [11], [12], [13], [30], [31], [32] (Figure 7).
Core components of the described regulatory systems appeared to operate across multiple tumor types such as breast and lung cancer.
Thus, the regulation of multiple tumor suppressor genes was a common function of ERK oscillations in murine and human model systems.
It was difficult to distinguish multiple tumor from metastatic omental tumor in our case.
Maspin-a tumor suppressor gene shows multiple tumor suppressive properties such as increasing tumor cell apoptosis and reducing migration, proliferation, invasion, and overall tumor metastasis.
