Biotechnology Bulletin ›› 2021, Vol. 37 ›› Issue (6): 163-170.doi: 10.13560/j.cnki.biotech.bull.1985.2020-1323

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Study on the Function of Glycolysis in Inducing Chicken PGCLC in vitro Formation

ZHANG Chen(), ZUO Qi-sheng, ZOU Yi-chen, ZHAO Juan-juan, ZHANG Ya-ni, LI Bi-chun()   

  1. Institutes of Agricultural Science and Technology Development,Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China,College of Animal Science and Technology,Yangzhou University,Yangzhou 225009
  • Received:2020-10-26 Online:2021-06-26 Published:2021-07-08
  • Contact: LI Bi-chun E-mail:m160647@yzu.edu.cn;yubcli@yzu.edu.cn

Abstract:

Studies have shown that glycolysis is mainly involved in cell reprogramming and maintaining cell totipotency,but its role in germ cell differentiation is still poorly understood. This study aims to explore the function of glycolysis system in the formation of Primordial Germ Cell(PGC)based on the in vitro model of inducing PGC differentiation in chicken Embryonic Stem Cell(ESC)induced by Bone Morphogenetic Protein 4(BMP4),and to lay a theoretical foundation for analyzing the molecular mechanism of PGC formation in chickens from the metabolic level. The expression variations of glycolysis related genes of Pgk1(phosphoglycerate kinase 1),Hk1(hexokinase 1),Pkm2(pyruvate kinase M2),Ldha(lactate dehydrogenase A),Glut1(glucose transporter type 1),Pfkp(phosphofructokinase,platelet,)and Aldoc(aldolase,fructose-bisphosphate C)were detected by qRT-PCR during BMP4 induction with glycolysis inhibitor VK3 and activator DASA58. Cell morphology was observed under different treatments. Flow cytometry was used to analyze the percentage of DDX4 positive cells(PGC like cells,PGCLC)on the day 6 after induction. qRT-PCR results showed that during the differentiation of chicken ESC into PGC-like induced by BMP4,the glycolysis related genes were significantly down regulated,and the glycolysis pathway was inhibited;while the glycolysis pathway was significantly inhibited after adding VK3,and was significantly activated after adding DASA58. Morphological observation of cells showed that the number of embryoid bodies increased significantly after adding VK3 compared with the normal induction process,but decreased significantly after adding DASA58. Analysis by flow cytometry showed that the proportion of DDX4 positive cells increased after VK3 addition,and decreased after adding DASA58. In sum,the results indicate that inhibition of glycolysis may promote the formation of chicken PGC-like in vitro,that is,glycolysis is suppressed in the process of chicken PGCs formation.

Key words: glycolysis, chicken, embryonic stem cells, primordial germ like cells