Acta Veterinaria et Zootechnica Sinica ›› 2023, Vol. 54 ›› Issue (1): 252-262.doi: 10.11843/j.issn.0366-6964.2023.01.023

• PREVENTIVE VETERINARY MEDICINE • Previous Articles     Next Articles

Effects of Recombinant Phosphatidylinositol Transfer Protein from Haemonchus contortus on the Transcription of Pattern Recognition Receptors and Cytokines in Goat Peripheral Blood Mononuclear Cells

XIE Xinran, ZHANG Yue, LU Mingmin, XU Lixin, SONG Xiaokai, LI Xiangrui, YAN Ruofeng*   

  1. College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
  • Received:2022-05-14 Online:2023-01-23 Published:2023-01-17

Abstract: To study the effects of recombinant phosphatidylinositol transfer protein (HCPITP) from Haemonchus contortus on goat immunity, prokaryotic expression recombinant plasmid pET-28a-HCPITP was constructed and the recombinant protein was obtained. The differences of transcription level of HCPITP gene in egg, the third-stage larvae, female and male adult worm were analyzed. Goat peripheral blood mononuclear cells (PBMCs) were isolated and incubated with recombinant HCPITP, the effects of recombinant protein on the proliferation of goat PBMCs, the effects of recombinant protein on the transcription levels of pattern recognition receptors (PRRs) and cytokines in goat PBMCs were analyzed. Results showed that the relative transcription levels of HCPITP mRNA in female, male, the third-stage larvae, and egg were 1, 10.2, 0.47 and 0.58, respectively. The recombinant protein showed reactogenicity by Western blot analysis. It was found that recombinant HCPITP significantly inhibited the proliferation of ConA on PBMCs. Recombinant HCPITP promoted the transcription of IL-2, IL-4, IL-6, IL-17, TLR1 and TLR10 in goat PBMCs. In conclusion, the transcription level of HCPITP gene shows obvious stage differences, recombinant HCPITP has a certain effect on the proliferation and mRNA transcription of PRRs and cytokines of goat PBMCs.

Key words: Haemonchus contortus, phosphatidylinositol transfer protein, pattern recognition receptors, immunomodulation

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