Effect of the gene silencing of phosphorus transporters on phosphorus absorption across primary cultured duodenal epithelial cell monolayers of chick embryos
Effect of the gene silencing of phosphorus transporters on phosphorus absorption across primary cultured duodenal epithelial cell monolayers of chick embryos作者机构:Poultry Mineral Nutrition LaboratoryCollege of Animal Science and TechnologyYangzhou UniversityYangzhou 225009P.R.China Mineral Nutrition Research DivisionInstitute of Animal SciencesChinese Academy of Agricultural SciencesBeijing 100193P.R.China College of Veterinary MedicineYangzhou UniversityYangzhou 225009P.R.China
出 版 物:《Journal of Integrative Agriculture》 (农业科学学报(英文版))
年 卷 期:2022年第21卷第7期
页 面:2076-2085页
核心收录:
学科分类:0905[农学-畜牧学] 09[农学] 0901[农学-作物学]
基 金:supported by the Key Program of the National Natural Science Foundation of China(31630073) the National Natural Science Foundation of China(31472116) the National Key R&D Program of China(2017YFD0502200) the China Agriculture Research System of MOF and MARA(CARS-41) the Agricultural Science and Technology Innovation Program(ASTIP-IAS09)。
主 题:broiler phosphorus transporter phosphorus absorption primary cultured duodenal epithelial cell
摘 要:The aim of the study was to investigate whether phosphorus(P) transporters, type IIb sodium-dependent phosphate cotransporter(NaP-IIb) and inorganic phosphate transporter 2(PiT2), were directly involved in P absorption across primary cultured duodenal epithelial cell monolayers of chick embryos. The siRNAs against NaP-IIb or PiT2 were designed, synthesized and transfected into primary cultured duodenal epithelial cells of chick embryos. Then, the inhibitory efficiency of siRNAs against NaP-IIb or PiT2 was analyzed, and the most efficacious siRNAs were selected to be used for subsequent P absorption experiments. Briefly, primary cultured duodenal epithelial cells of chick embryos were transfected with either NaP-IIb or PiT2 siRNAs and grown in confluent monolayers on transwell plates. The untransfected or transfected cell monolayers were then incubated in an uptake medium containing 0 or 0.25 mmol L^(–1) of P as KH_(2) PO_(4) to measure the P absorption across duodenal epithelial cell monolayers. The results showed that among the siRNAs designed, si-1372 and si-890 were demonstrated to be the most effective in inhibiting the NaPIIb and PiT2 expressions, respectively. Supplemental P increased(P=0.065) the protein abundance of PiT2 and enhanced(P0.0001) P absorption in primary cultured duodenal epithelial cell of chick embryos. Furthermore, NaPIIb silencing decreased(P=0.07) P absorption across duodenal epithelial cell monolayers, while PiT2 silencing had no effect(P=0.345). It is concluded that the NaP-IIb, but not PiT2, might be directly involved in the P absorption of chick duodenal epithelial cells.