title: Dihydroceramide desaturase activity in tumors.
abstract: Dihydroceramide desaturase activity in the transplantable mouse hepatoma-22, rat hepatoma-27, M1 sarcoma, and RS1 rat cholangiocellular carcinoma has been investigated. It was found that the dihydroceramide desaturase activity in mouse hepatoma-22 is lower than that in normal mouse liver. However, the activity of this enzyme in subcutaneously and intrahepatically transplanted rat hepatoma-27 is increased compared to normal value. Dihydroceramide desaturase activity in subcutaneously and intrahepatically transplanted M1 sarcoma as well as in hepatoma-27 is dependent on the tumor microenvironment. The enzyme activity in RS1 tumor was not revealed. The data indicate that dihydroceramide desaturase activity depends on the tumor type and its microenvironment.
authors.affiliation: Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia.
authors.forename: A G
authors.initials: AG
authors.lastname: Kandyba
authors.forename: V A
authors.initials: VA
authors.lastname: Kobliakov
authors.forename: A M
authors.initials: AM
authors.lastname: Kozlov
authors.forename: I Yu
authors.initials: IY
authors.lastname: Nagaev
authors.forename: V P
authors.initials: VP
authors.lastname: Shevchenko
authors.forename: E V
authors.initials: EV
authors.lastname: Dyatlovitskaya
mesh_terms: D000818:Animals; D006528:Carcinoma, Hepatocellular / Q000201:enzymology* / Q000378:metabolism; D007279:Injections, Subcutaneous; D008099:Liver / Q000201:enzymology; D008113:Liver Neoplasms / Q000201:enzymology* / Q000378:metabolism; D051379:Mice; D009368:Neoplasm Transplantation; D010088:Oxidoreductases / Q000378:metabolism*; D051381:Rats; D012509:Sarcoma / Q000201:enzymology* / Q000378:metabolism; D013110:Sphingosine / Q000031:analogs & derivatives* / Q000378:metabolism
chemical_list: D010088:Oxidoreductases; C108138:dihydroceramide desaturase; D013110:Sphingosine; C005682:safingol