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Analyzing the invasive front of colorectal cancer - by punching tissue block or laser capture microdissection?Pavlič, Ana, medicina ...The aim of this study was to determine the advantages and limitations of two commonly used sampling techniques, i.e., punching tissue block (PTB) and laser capture microdissection (LCM) when ... investigating tumor cell-derived gene expression patterns at the invasive front of colorectal cancer (CRC). We obtained samples from 20 surgically removed CRCs at locations crucial for tumor progression, i.e., the central part, the expansive front and the infiltrative front exhibiting tumor budding (TB), using both sampling techniques. At each location, we separately analyzed the expressions of miR-200 family (miR-141, miR-200a, miR-200b, miR-200c and miR-429), known as reliable markers of epithelial-mesenchymal transition (EMT). We found significant downregulation of all members of miR-200 family at the infiltrative front in comparison to the central part regardless of the used sampling technique. However, when comparing miR-200 expression between the expansive and the infiltrative front, we found significant downregulation of all tested miR-200 at the infiltrative front only in samples obtained by LCM. Our results suggest that, PTB is an adequate technique for studying the differences in tumor gene expression between the central part and the invasive front of CRC, but is insufficient to analyze and compare morphologically distinct patterns along the invasive front including TB. For this purpose, the use of LCM is essential.Source: Pathology research and practice. - ISSN 0344-0338 (Vol. 248, iss. [article no.] 154727, 2023, str. 1-7)Type of material - article, component partPublish date - 2023Language - englishCOBISS.SI-ID - 161252611
Author
Pavlič, Ana, medicina |
Urh, Kristian |
Boštjančič, Emanuela, 1979 |
Zidar, Nina, 1960-
Topics
colon cancer |
miR-200 |
laser-capture microdissection |
punching tissue block |
sampling techniques |
tumor gene expression |
rak debelega črevesa |
mikrodisekcija z laserskim zajemom |
blok prebijanja tkiva |
tehnike vzorčenja |
izražanje tumorskih genov
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source: Pathology research and practice. - ISSN 0344-0338 (Vol. 248, iss. [article no.] 154727, 2023, str. 1-7)
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Database name | Field | Year |
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Pavlič, Ana, medicina | ![]() |
Urh, Kristian | 51961 |
Boštjančič, Emanuela, 1979 | 25441 |
Zidar, Nina, 1960- | 12955 |
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