Applying Modified VP53A Recombinant Protein as an Anti-White Spot Syndrome Virus Biological Agent in Litopenaeus vannamei Farming.
Jeff Chia-Kai HsuHuai-Ting HuangHan-Jia LinHsin-Yiu ChouPo-Yu HuangAnuphap PrachumwatLi-Li ChenPublished in: Viruses (2022)
Shrimp farming is an important economic activity. However, due to the spread of pathogens, shrimp aquaculture is becoming increasingly difficult. Many studies have confirmed that white spot syndrome virus (WSSV) recombinant proteins can inhibit viral infection. Among them, VP53 recombinant protein has been found to reduce mortality upon WSSV challenge. This study was conducted in Kaohsiung, Taiwan and reports the first field feeding trial to demonstrate that WSSV recombinant proteins can improve shrimp survival rates at a farming scale. Prior to the feeding trial, the shrimp were confirmed to be slightly infected with WSSV, Vibrio parahaemolyticus strains causing acute hepatopancreatic necrosis disease (AHPND), non-AHPND V. parahaemolyticus strains, and Enterocytozoon hepatopenaei (EHP), which are common pathogens that shrimp farmers often face. The shrimp were then divided into two groups: a control group (C group) fed with a commercial diet and a protein group (P group) fed with the same commercial feed with VP53 recombinant protein. Our findings indicated that the survival rate and expression of immune genes of the P group were higher than those of the C group. The intestinal microbiota of the two groups were also analysed. Collectively, our results confirmed that the recombinant WSSV envelope protein derivative can be used as an effective anti-virus biological agent in shrimp farms.
Keyphrases
- protein protein
- binding protein
- cell free
- escherichia coli
- amino acid
- clinical trial
- poor prognosis
- risk factors
- randomized controlled trial
- study protocol
- pseudomonas aeruginosa
- weight loss
- phase ii
- coronary artery disease
- cardiovascular events
- dna methylation
- cystic fibrosis
- staphylococcus aureus
- respiratory failure
- acute respiratory distress syndrome
- disease virus
- transcription factor