Identification of a mimotope of an infectious bronchitis virus S1 protein

The S1 protein of the infectious bronchitis virus (IBV) is a major structural protein that induces the production of the virus-neutralization antibodies. The monoclonal antibody against the IBV M41 S1 protein was used as a target for biopanning. After three rounds of biopanning, randomly selected phages bound to the monoclonal antibody. Sequence analysis showed that the dominant sequence was SFYDFEMQGFFI. Indirect competitive enzymelinked immunosorbent assay showed that SFYDFEMQGFFI is a mimotope of the S1 protein that was predicted by PepSurf. The mimotope may provide information for further structural and functional analyses of the S1 protein.

Identification of a mimotope of an infectious bronchitis virus S1 protein

The S1 protein of the infectious bronchitis virus (IBV) is a major structural protein that induces the production of the virus-neutralization antibodies. The monoclonal antibody against the IBV M41 S1 protein was used as a target for biopanning. After three rounds of biopanning, randomly selected phages bound to the monoclonal antibody. Sequence analysis showed that the dominant sequence was SFYDFEMQGFFI. Indirect competitive enzymelinked immunosorbent assay showed that SFYDFEMQGFFI is a mimotope of the S1 protein that was predicted by PepSurf. The mimotope may provide information for further structural and functional analyses of the S1 protein.

Research Progress of Aplication of H295R Cell Line for Screening Environmental Steroid Hormone Disruptors / 环境与健康杂志

H295R cells can express all the key enzymes involved in the synthesis of steroid hormones,and have the ability to produce the steroid hormones found in the adult human adrenal cortex. Good correlation of response to toxicity has been reported between H295R cell line and normal adult human adrenal cells. H295R cell line can be used to evaluate effects of chemicals on gene expression,enzymatic activities and hormone production,and to explore the mode of action of chemicals on steroidgenesis. H295R cell line has been suggested as a potentially useful tool for screening environmental steroid hormone disruptors in vitro. The application of H295R cell line for screening environmental steroid hormone disruptors in vitro and its current issues are reviewed in this article.

Application of Amphibian in Environmental Toxicology / 环境与健康杂志

Amphibian is playing a very important role in the field of environmental toxicological studies. In the present paper, taking the Xenopus laevis, a model animal of amphibian, as an example, reviewed the application of amphibian in environmental toxicology, such as acute toxicity, frog embryo teraogenesis array-Xenopus(FETAX), micronucleus test, environmental endocrine disruptors detection.