[Expression of procalcitonin and characterization of antibodies against PCT].
Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi
; 24(8): 795-7, 2008 Aug.
Article
en Zh
| MEDLINE
| ID: mdl-18687221
AIM: To construct the expression vectors of procalcitonin (PCT), prepare polyclonal antibodies (pAbs) and monoclonal antibodies (mAbs) against PCT and identify their specific biological activity. METHODS: The recombinant expression plasmids of pGEX-4T-1-PCT and PET-32a-PCT were constructed using thyroid carcinoma cell line (TT cell) cDNA as template. The fusion protein of His-PCT was expressed in E.coli and used as immunogen. The specificity of antiserum against human PCT was characterized by ELISA, Western blot and indirect immunofluorescence. The mAbs against human PCT were identified by Western blot and indirect immunofluorescence. RESULTS: The recombinant expression plasmids of pGEX-4T-1-PCT and PET-32a-PCT were constructed and the fusion protein of His-PCT was expressed and purified. The antiserum against human PCT was prepared and the titer detected by ELISA was 1:256 000. The pAb specifically recognized the recombinant human PCT. Eight hybridoma cell lines secreting specific mAbs against PCT were established. The mAbs recognized the recombinant human PCT and four of them recognized the native PCT of TT cytoplasm in immunofluorescent assay. CONCLUSION: The successful preparation of polyclonal and monoclonal antibodies against human PCT is beneficial to further research into the pathological and physiological functions of PCT in severe bacterial infection and sepsis.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Precursores de Proteínas
/
Calcitonina
/
Anticuerpos
Límite:
Animals
/
Humans
Idioma:
Zh
Revista:
Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi
Asunto de la revista:
ALERGIA E IMUNOLOGIA
Año:
2008
Tipo del documento:
Article
País de afiliación:
China
Pais de publicación:
China