Journal: Scientific reports

Article Title: Effects of glucose metabolism pathways on nuclear and cytoplasmic maturation of pig oocytes.

doi: 10.1038/s41598-020-59709-6

Figure Lengend Snippet: Figure 4. Effects of down regulating related genes in DOs or CCM on in vitro maturation of pig oocytes. Graph (A) shows percentages of MII oocytes after DOs were cultured for 48 h in the NCSU-23 medium containing 0, 10 or 15 mM pyruvate (Pyr) with 10, 25 or 50 µM 4-CIN (CIN) or with 0.01, 0.03 or 0.05 µM rotenone (Rot). Graph B shows percentages of MII oocytes after DOs were cultured for 48 h in the NCSU-23 medium containing 0, 5 or 10 mM lactate (Lac) with 10, 25 or 50 mM sodium oxamate (Oxm) or with 10, 20 or 50 µM 4-CIN. Graphs (C–E) show MII percentages of cocultured DOs (Left Y axis) and levels of MPC1, NDUFV1 and LDHB (Right Y axis) after transfection of CCM with negative control (NC) siRNA, MPC1 siRNA (MP1, 2 or 3), NDUFV1 siRNA (ND1, 2 or 3), or LDHB siRNA (LD1, 2 or 3), respectively. Graphs (F,G) show MII percentages of DOs after microinjection with NC, MP3, ND1 or LD2 siRNAs. While DOs and the CCM transfected/injected with MPC1 or NDUFV1 siRNAs were cultured in NCSU-23 containing 15 mM pyruvate, DOs and the CCM transfected/injected with LDHB siRNA were cultured in NCSU-23 containing 10 mM lactate. In oocyte maturation experiments, each treatment was repeated 4 times with each replicate containing about 20 oocytes. Graphs (H,I) show ATP concentrations (ng/ml) in medium conditioned with CCM in NCSU-23 medium containing 5.6 mM glucose and 15 mM pyruvate, respectively, after transfection with G6PD siRNA-3 (G6-3), GAPDH siRNA-3 (GA-3) or MPC1 siRNA-3 (MP3). Each treatment was repeated 3 times with each replicate containing medium recovered from one culture well on different experimental days. a–f: Values with a different letter above bars differ significantly (P < 0.05).

Article Snippet: The primary antibodies used included rabbit anti-G6PD monoclonal antibodies (1:1000, ab993, Abcam Co., Ltd, Beijing, China), mouse anti-GAPDH monoclonal antibodies (1:1000, CW0100A, CWBio Co., Ltd, Beijing, China), rabbit anti-LDHB polyclonal antibodies (1:1000, 14824-1-AP, Proteintech Co., Ltd, Wuhan, China), rabbit anti-MPC1 polyclonal antibodies (1:200, TA315496S, ORIGENE Co., Ltd, Beijing, China), rabbit anti-NDUFV1 polyclonal antibodies (1:500, 11238-1-AP, Proteintech Co., Ltd, Wuhan, China), mouse anti-β-tubulin monoclonal antibodies (1:1000, 05–661, Merck Millipore), and mouse anti-β-actin monoclonal antibodies (1:1000, CW00096M, CWBio Co., Ltd).

Techniques: In Vitro, Cell Culture, Transfection, Negative Control, Microinjection, Injection