Antibody recognition of the glycoprotein g of viral haemorrhagic septicemia virus (VHSV) purified in large amounts from insect larvae

BMC Research Notes

Julio Coll³  Amparo Estepa¹  Jose M Escribano³  Eduardo Gomez-Casado³  Maria Carmen Nunez²  Silvia Gomez-Sebastian²  Paloma Encinas³ 

[1] IBMC - Universidad Miguel Hernández, 03202 Elche (Alicante), Spain;Alternative Gene Expression S.L. (ALGENEX) Centro Empresarial Campus Montegancedo. P. Cientifico Tecnologico. UPM, 28223 Pozuelo de Alarcon Madrid, Spain;INIA, SGIT - Dept Biotecnología Crt. Coruña Km 7 - 28040 Madrid, Spain

关键词: large-scale;    antibodies;    trout;    ELISA;    insect larvae;    glycoprotein;    VHSV;   

Others  :  1167436
DOI  :  10.1186/1756-0500-4-210

 received in 2011-01-10, accepted in 2011-06-21,  发布年份 2011

【 摘 要 】

Background

There are currently no purification methods capable of producing the large amounts of fish rhabdoviral glycoprotein G (gpG) required for diagnosis and immunisation purposes or for studying structure and molecular mechanisms of action of this molecule (ie. pH-dependent membrane fusion). As a result of the unavailability of large amounts of the gpG from viral haemorrhagic septicaemia rhabdovirus (VHSV), one of the most dangerous viruses affecting cultured salmonid species, research interests in this field are severely hampered. Previous purification methods to obtain recombinant gpG from VHSV in E. coli, yeast and baculovirus grown in insect cells have not produced soluble conformations or acceptable yields. The development of large-scale purification methods for gpGs will also further research into other fish rhabdoviruses, such as infectious haematopoietic necrosis virus (IHNV), spring carp viremia virus (SVCV), hirame rhabdovirus (HIRRV) and snakehead rhabdovirus (SHRV).

Findings

Here we designed a method to produce milligram amounts of soluble VHSV gpG. Only the transmembrane and carboxy terminal-deleted (amino acid 21 to 465) gpG was efficiently expressed in insect larvae. Recognition of G21-465 by ß-mercaptoethanol-dependent neutralizing monoclonal antibodies (N-MAbs) and pH-dependent recognition by sera from VHSV-hyperimmunized or VHSV-infected rainbow trout (Oncorhynchus mykiss) was demonstrated.

Conclusions

Given that the purified G21-465 conserved some of its most important properties, this method might be suitable for the large-scale production of fish rhabdoviral gpGs for use in diagnosis, fusion and antigenicity studies.

【 授权许可】

   
2011 Coll et al; licensee BioMed Central Ltd.

【 图 表 】

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