Nowadays, one of the most common cancers in the world is hepatocellular carcinoma (HCC). It is a highly vascularized tumor with a strong dependence on angiogenesis. The vascular remodeling is strongly required for further tumor progression. Thus, hepatocellular carcinoma attracts a vast majority of researchers, who are interested in understanding the tumor progression. In the studies of hepatocarcinogenesis, rodent models are frequently used to explore the pathophysiology and progression of hepatocellular carcinoma. However, there are only a few studies were done on hepatocarcinogenisis and on its angiogenetic properties in rodent liver models. Here, my study shows the presence of vascular remodeling in the pre-neoplastic and neoplastic lesions in rodent models.
In this study, I comprehensively characterized the pre-neoplastic foci of cellular alteration (FCA) and cancerous lesion (HCC) by using tissue-based techniques and computer-assisted analysis to get a better understanding of vascular remodeling appears in rodent models and how. Different immunohistochemistry markers were used, including such as CD31, Collagen IV, α-SMA, Desmin, VEGF164, Ki-67, and LYVE1, and RNA in-situ hybridization (VEGF-A). Additionally, computational image analysis was used to evaluate parameters including microvessel density, vessel size, and pericyte coverage, including intratumoral vessel distribution and architecture. Software programs that were used for computational analysis were Aperio ImageScope, Definiens, and QuPath.
I found that FCA lesions have higher microvessel density and larger amounts of smaller immature vessels. On the contrary, HCC lesions have larger vessels with a lower number of vessels and a higher degree of vessel maturation. In conclusion, I have validated the presence of vascular remodeling in the early stages of experimental hepatocarcinogenesis. This detailed characterization could be used as a solid basis for further angiogenesis studies in these models.
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Nowadays, one of the most common cancers in the world is hepatocellular carcinoma (HCC). It is a highly vascularized tumor with a strong dependence on angiogenesis. The vascular remodeling is strongly required for further tumor progression. Thus, hepatocellular carcinoma attracts a vast majority of researchers, who are interested in understanding the tumor progression. In the studies of hepatocarcinogenesis, rodent models are frequently used to explore the pathophysiology and progression of hepa...
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