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@article{2317997, author = {Procházková, Jiřina and Slavik, Josef and Bouchal, Jan and Levkova, Monika and Huskova, Zlata and Ehrmann, Jiri and Ovesná, Petra and Kolar, Zdenek and Skalicky, Pavel and Strakova, Nicol and Zapletal, Ondrej and Kozubík, Alois and Hofmanová, Jiřina and Vondráček, Jan and Machala, Miroslav}, article_location = {AMSTERDAM}, article_number = {9}, doi = {http://dx.doi.org/10.1016/j.bbalip.2020.158742}, keywords = {Sphingolipid metabolism; Colon adenocarcinoma; Lactosylceramide; B4GALTs; EPCAM-positive cells}, language = {eng}, issn = {1388-1981}, journal = {BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR AND CELL BIOLOGY OF LIPIDS}, title = {Specific alterations of sphingolipid metabolism identified in EpCAM-positive cells isolated from human colon tumors}, url = {https://www.sciencedirect.com/science/article/pii/S1388198120301347?via%3Dihub}, volume = {1865}, year = {2020} }
TY - JOUR ID - 2317997 AU - Procházková, Jiřina - Slavik, Josef - Bouchal, Jan - Levkova, Monika - Huskova, Zlata - Ehrmann, Jiri - Ovesná, Petra - Kolar, Zdenek - Skalicky, Pavel - Strakova, Nicol - Zapletal, Ondrej - Kozubík, Alois - Hofmanová, Jiřina - Vondráček, Jan - Machala, Miroslav PY - 2020 TI - Specific alterations of sphingolipid metabolism identified in EpCAM-positive cells isolated from human colon tumors JF - BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR AND CELL BIOLOGY OF LIPIDS VL - 1865 IS - 9 SP - 1-11 EP - 1-11 PB - ELSEVIER SN - 13881981 KW - Sphingolipid metabolism KW - Colon adenocarcinoma KW - Lactosylceramide KW - B4GALTs KW - EPCAM-positive cells UR - https://www.sciencedirect.com/science/article/pii/S1388198120301347?via%3Dihub N2 - Metabolic reprogramming leading to alterations in lipid metabolism and lipid-mediated signaling may contribute to colorectal cancer (CRC) development and progression. We hypothesized that a detailed description of changes in sphingolipidome of specific cellular subpopulation residing in colon cancer tissue may help to discriminate between normal and transformed colon epithelial cells. Using HPLC-mass spectrometry, we analyzed the EpCAM-positive cells isolated from tumor and adjacent non-tumor tissues of colon cancer patients, aiming to identify potential lipid biomarkers specific for CRC. We then employed RT-qPCR-based methodology in order to analyze expression of SL metabolism-related genes in the isolated EpCAM-positive tumor cells and/or in unseparated colon tumor tissues. We observed significant changes in sphingolipid (SL) species in the EpCAM-positive tumor cells, with the accumulation of lactosylceramide (LacCer) being the most prominent. B4GALT5 and B4GALT6 genes were identified as two potential gene candidates contributing to LacCer accumulation. We further identified additional genes of SL and fatty acid metabolism (e.g. SPHK1, GBA2, NEU3, GLA, FASN, PLA2G10), which were significantly altered in colon tumor tissue. The present results indicate that the EpCAM-positive cells are a major contributor to LacCer accumulation in CRC tissue, and may help to identify novel CRC-specific lipid/gene biomarkers. ER -
PROCHÁZKOVÁ, Jiřina, Josef SLAVIK, Jan BOUCHAL, Monika LEVKOVA, Zlata HUSKOVA, Jiri EHRMANN, Petra OVESNÁ, Zdenek KOLAR, Pavel SKALICKY, Nicol STRAKOVA, Ondrej ZAPLETAL, Alois KOZUBÍK, Jiřina HOFMANOVÁ, Jan VONDRÁČEK and Miroslav MACHALA. Specific alterations of sphingolipid metabolism identified in EpCAM-positive cells isolated from human colon tumors. \textit{BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR AND CELL BIOLOGY OF LIPIDS}. AMSTERDAM: ELSEVIER, 2020, vol.~1865, No~9, p.~1-11. ISSN~1388-1981. Available from: https://dx.doi.org/10.1016/j.bbalip.2020.158742.
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