title: Effects of porcine oocytes on the expression levels of transcripts encoding glycolytic enzymes in granulosa cells.
abstract: Oocytes play critical roles in regulating the expression of transcripts encoding the glycolytic enzymes phosphofructokinase, platelet (PFKP) and lactate dehydrogenase A (LDHA) in granulosa cells in mice, but whether this is the case in pigs or other mammals has not been adequately investigated. Therefore, the aim of this study was to determine whether porcine oocytes regulate the expression levels of these transcripts in granulosa cells in vitro. Porcine cumulus cells expressed higher levels of PFKP and LDHA transcripts than mural granulosa cells (MGCs). However, co-culturing with oocytes had no significant effect on the isolated cumulus cells. While murine oocytes promoted the expression of both Pfkp and Ldha transcripts by murine MGCs, porcine oocytes promoted the expression of only Pfkp, but not Ldha transcripts by murine MGCs. Neither murine nor porcine oocytes affected PFKP and LDHA expression by porcine MGCs. Moreover, in the presence of porcine follicular fluid, porcine oocytes maintained the expression of PFKP, but not LDHA by porcine cumulus cells. Therefore, porcine oocytes are capable of regulating the expression of PFKP but not LDHA in granulosa cells in coordination with unknown factor(s) present in the follicular fluid.
authors.affiliation: Laboratory of Applied Genetics, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan.
authors.forename: Yuta
authors.initials: Y
authors.lastname: Matsuno
authors.affiliation: Laboratory of Applied Genetics, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan.
authors.forename: Asuka
authors.initials: A
authors.lastname: Onuma
authors.affiliation: Laboratory of Applied Genetics, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan.
authors.forename: Yoshie A
authors.initials: YA
authors.lastname: Fujioka
authors.affiliation: Laboratory of Applied Genetics, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan.
authors.forename: Chihiro
authors.initials: C
authors.lastname: Emori
authors.affiliation: Laboratory of Applied Genetics, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan.
authors.forename: Wataru
authors.initials: W
authors.lastname: Fujii
authors.affiliation: Laboratory of Applied Genetics, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan.
authors.forename: Kunihiko
authors.initials: K
authors.lastname: Naito
authors.affiliation: Laboratory of Applied Genetics, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan.
authors.forename: Koji
authors.initials: K
authors.lastname: Sugiura
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D054885:Cumulus Cells / Q000201:enzymology; D005260:Female; D015571:Follicular Fluid; D015870:Gene Expression; D015971:Gene Expression Regulation, Enzymologic; D006019:Glycolysis; D006107:Granulosa Cells / Q000201:enzymology*; D007527:Isoenzymes / Q000235:genetics; D007770:L-Lactate Dehydrogenase / Q000235:genetics*; D000080864:Lactate Dehydrogenase 5; D051379:Mice; D009865:Oocytes / Q000502:physiology*; D025221:Phosphofructokinases / Q000235:genetics*; D013552:Swine; D014158:Transcription, Genetic
chemical_list: D007527:Isoenzymes; D007770:L-Lactate Dehydrogenase; D000080864:Lactate Dehydrogenase 5; D025221:Phosphofructokinases
keywords: cumulus cells; glycolysis; granulosa cells; porcine oocytes