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I type aldehyde dehydrogenase of clonorchis sinensis, its coding nucleic acid and application

A technology of Clonorchis sinensis and aldehyde dehydrogenase, which can be used in application, oxidoreductase, anti-enzyme immunoglobulin, etc., and can solve problems such as low expression level

Inactive Publication Date: 2005-09-21
佛山顺德智研生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(Pangala V, BiochemicalPharmacology, Vol.57, pp.195-197, 1999) class II acetaldehyde dehydrogenase is the main mitochondrial isoenzyme, activated by short-chain aldehydes, responsible for the acetaldehyde dehydrogenase produced from ethanol conversion Aldehyde metabolism, the gene for this enzyme is expressed at low levels in many tissues, but very high in the liver and kidney, but very low in skeletal and cardiac muscle

Method used

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  • I type aldehyde dehydrogenase of clonorchis sinensis, its coding nucleic acid and application
  • I type aldehyde dehydrogenase of clonorchis sinensis, its coding nucleic acid and application

Examples

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Embodiment I

[0097] Example I: Cloning of Clonorchis sinensis Class I Aldehyde Dehydrogenase

[0098] The total RNA of Clonorchis sinensis adults was extracted by one-step method of guanidine isothiocyanate / phenol / chloroform. Poly(A) mRNA was isolated from total RNA using Quik mRNA Isolation Kit (product of Qiegene). 2ug poly(A) mRNA was reverse transcribed to form cDNA. Smart cDNA cloning kit (purchased from Clontech) was used to insert the cDNA fragment into the multiple cloning site of the pBSK(+) vector (product of Clontech Company), transform DH5α, and the bacteria formed a cDNA library. The sequences of the 5' and 3' ends of all clones were determined with Dye terminate cycle reactions sequencing kit (product of Perkin-Elmer) and ABI 377 automatic sequencer (Perkin-Elmer). Comparing the determined cDNA sequence with the existing public DNA sequence database (Genebank), it was found that the cDNA sequence of one of the clones, c002D06, was a new DNA. The insert cDNA fragment contai...

Embodiment 2

[0099] Example 2: Homology retrieval of cDNA clones

[0100] With the sequence of the Clonorchis sinensis class I aldehyde dehydrogenase of the present invention and the protein sequence encoded thereof, use the Blast program (Basiclocal Alignment search tool) [Altschul, SF et al.J.Mol.Biol.1990; 215:403 -10], homologous searches were performed in databases such as Genbank and Swissport. The gene with the highest homology to the Clonorchis sinensis class I aldehyde dehydrogenase of the present invention is a known Xenopus class I aldehyde dehydrogenase, the two are highly homologous, and the protein homology results are shown in figure 1 , whose identity is 59%; similarity is 75%.

Embodiment 3

[0101] Embodiment 3: Cloning the gene encoding Clonorchis sinensis class I aldehyde dehydrogenase by RT-PCR method

[0102] The total RNA of Clonorchis adultes was used as template, and oligo-dT was used as primer to carry out reverse transcription reaction to synthesize cDNA. After purification with Qiagene kit, PCR amplification was carried out with the following primers:

[0103] Primer1: 5'-CTGTTCATTAATAATGAATTTGTG-3' (SEQ ID NO: 3)

[0104] Primer2: 5'-TCTTTTTTTTTTTTTTTTGGAGAATG-3' (SEQ ID NO: 4)

[0105] Primer1 is the forward sequence starting from the 1st bp at the 5' end of SEQ ID NO:1;

[0106] Primer2 is the 3' reverse sequence in SEQID NO:1.

[0107] The conditions of the amplification reaction: 50mmol / L KCl, 10mmol / LTris-Cl, (pH8.5), 1.5mmol / LMgCl in a reaction volume of 50μl 2 , 200 μmol / L dNTP, 10 pmol primer, 1 U of Taq DNA polymerase (product of Clontech Company). On a PE9600 DNA thermal cycler (Perkin-Elmer), the reaction was performed for 25 cycles under...

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Abstract

The invention discloses new genes for encoding clonorchis sinensis type I aldehyde dehydrogenase, polypeptides encoded by the genes, and antibody of the polypeptides. The invention also discloses the depressor of the polypeptides for screening clonorchis sinensis type I aldehyde dehydrogenase, the use of polynucleotides as primer or as probe, in particular the use of the polypeptide and polynucleotide as diagnosis reagent kit, and vaccine.

Description

technical field [0001] The invention belongs to the field of biotechnology. Specifically, the invention describes a new polypeptide-Clonorchis sinensis class I aldehyde dehydrogenase, and a polynucleotide sequence encoding the polypeptide. The present invention also relates to the application of this polynucleotide and polypeptide. Background technique [0002] Clonorchis sinensis is a zoonotic disease. Adults parasitize in the liver and bile ducts. Adults will destroy the biliary epithelium and submucosal blood vessels, produce and secrete excretory antigens, cause inflammation in the bile duct and around the bile duct, and lead to local dilation of the bile duct and bile duct epithelial cells. hyperplasia. Some antigen components can also enter the liver tissue through the bile duct epithelial cells, causing inflammatory response and liver function damage. Long-term severe infection can lead to fibrous tissue hyperplasia and atrophic degeneration of liver cells, and even...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K38/44A61K48/00C07K16/40C12N9/04C12N15/53C12Q1/68G01N33/53
Inventor 余新炳徐劲吴忠道郑南才杨光
Owner 佛山顺德智研生物科技有限公司
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