With their unique taxonomic status and anatomical, physiological characteristics, tree shrews have been used as animal models of human diseases for a long time. It is essential to have enough basic data including biochemical indexes. In view of the basic data derived from wild tree shrews and the development of laboratory tree shrews, 23 biochemical indexes of wild tree shrews and laboratory tree shrews are studied in this article. Some of them are compared with those from published papers. As tree shrews are excitable, it is possible to be developed an animal model with mucosal disease such as gastrointestinal ulcers. The expression of TFF is fundamental to the subsequent research. TFF2 of tree shrews is cloned and its prokaryotic expression vector ( pET32a-tsTFF2) is cloned. When the sequence of tree shrews TFF2 cDNA was submitted to the progress BLASTn on NCBI, the query sequences are all from primates, while the corresponding protein sequence was submitted, the query sequences are wildly distributed, including primates, redents and so on. The percentage of identity is much higher in tree shrews TFF2 and mouse TFF2 than that in tree shrews TFF2 and human. It could be speculated that the taxonomic status of the tree shrew is closer to primates than others, and the amino acid sequence of TFF2 is very conservative.
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