Screening and molecular cloning of a protective antigen from the midgut of Haemaphysalis longicornis.
Korean J Parasitol
; 51(3): 327-34, 2013 Jun.
Article
en En
| MEDLINE
| ID: mdl-23864744
Vaccination is considered a promising alternative for controlling tick infestations. Haemaphysalis longicornis midgut proteins separated by SDS-PAGE and transferred to polyvinylidene difluoride (PVDF) membrane were screened for protective value against bites. The western blot demonstrated the immunogenicity of 92 kDa protein (P92). The analysis of the P92 amino acid sequence by LC-MS/MS indicated that it was a H. longicornis paramyosin (Hl-Pmy). The full lenghth cDNA of Hl-Pmy was obtained by rapid amplification of cDNA ends (RACE) which consisted of 2,783 bp with a 161 bp 3' untranslated region. Sequence alignment of tick paramyosin (Pmy) showed that Hl-Pmy shared a high level of conservation among ticks. Comparison with the protective epitope sequence of other invertebrate Pmy, it was calculated that the protective epitope of Hl-Pmy was a peptide (LEEAEGSSETVVEMNKKRDTE) named LEE, which was close to the N-terminal of Hl-Pmy protein. The secondary structure analysis suggested that LEE had non-helical segments within an α-helical structure. These results provide the basis for developing a vaccine against biting H. longicornis ticks.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Regulación de la Expresión Génica
/
Clonación Molecular
/
Ixodidae
/
Antígenos
Tipo de estudio:
Diagnostic_studies
/
Screening_studies
Límite:
Animals
Idioma:
En
Revista:
Korean J Parasitol
Asunto de la revista:
PARASITOLOGIA
Año:
2013
Tipo del documento:
Article
País de afiliación:
China
Pais de publicación:
Corea del Sur