Characterization of a New Gene wx2 in Toxoplasma gondii
| Autor: | Ronghua Xie, Jiubo Fan, Hengping Shu, Kui Tan, Shi-ping Wang, Qiong Zhang, Xiang Wu |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
biology
medicine.diagnostic_test medicine.drug_class cDNA library Biophysics Toxoplasma gondii General Medicine biology.organism_classification Monoclonal antibody Immunofluorescence Biochemistry Virology Molecular biology Antigen Immunoscreening parasitic diseases biology.protein medicine Antibody Gene |
| Zdroj: | Acta Biochimica et Biophysica Sinica. 39:475-483 |
| ISSN: | 1672-9145 |
| DOI: | 10.1111/j.1745-7270.2007.00302.x |
| Popis: | Using hybridization techniques, we prepared the monoclonal antibody (Mab) 7C3-C3 against Toxoplasma gondii. The protection tests showed that the protein (Mab7C3-C3) inhibited the invasion and proliferation of T. gondii RH strain in HeLa cells. The passive transfer test indicated that the antibody significantly prolonged the survival time of the challenged mice. It was also shown that the antibody could be used for the detection of the circulating antigen of T. gondii. After immunoscreening the T. gondii tachyzoite cDNA library with Mab7C3-C3, a new gene wx2 of T. gondii was obtained. Immunofluorescence analysis showed that the WX2 protein was located on the membrane of the parasite. Nucleotide sequence comparison showed 28% identity to the calcium channel α-1E unit and shared with the surface antigen related sequence in some conservative residues. However, no match was found in protein databases. Therefore, it was an unknown gene in T. gondii encoding a functional protein on the membrane of T. gondii. Because it has been shown to have a partial protective effect against T. gondii infection and is released as a circulating antigen, it could be a candidate molecule for vaccine or a novel target for new drugs. |
| Databáze: | OpenAIRE |
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