- Hypoxia increases glucose transporter 1 expression in bovine corpus luteum at the early luteal stage.
Hypoxia increases glucose transporter 1 expression in bovine corpus luteum at the early luteal stage.
The Journal of veterinary medical science (2017-10-20)
Ryo Nishimura, Hiroki Hasegawa, Masamichi Yamashita, Norihiko Ito, Yoshiharu Okamoto, Takashi Takeuchi, Tomoaki Kubo, Kosuke Iga, Koji Kimura, Mitsugu Hishinuma, Kiyoshi Okuda
PMID29046497
ABSTRACT
A major role of the corpus luteum (CL) is to produce progesterone (P4). The CL has immature vasculature shortly after ovulation, suggesting it exists under hypoxic conditions. Hypoxia-inducible factor-1 (HIF1) induces the expression of glucose transporter 1 (GLUT1). To clarify the physiological roles of GLUT1 in bovine CL, we examined GLUT1 mRNA expression in the CL under hypoxic conditions by quantitative RT-PCR. We also measured the effects of glucose (0-25 mM) and GLUT1 inhibitors (cytochalasin B, STF-31) on P4 production in bovine luteal cells. GLUT1 mRNA expression in bovine CL was higher at the early luteal stage compared to the other later stages. Hypoxia (3% O
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