毛明光,王印庚,尹立杰,张家松,刘宗柱.温度和金属离子对干扰素诱导剂 聚肌胞配对的影响.渔业科学进展,2009,30(1):74-78 |
温度和金属离子对干扰素诱导剂 聚肌胞配对的影响 |
Effects of temperature and metallic cations on the combination of interferon inducer polyinosinic polycytidylic acid (polyI:C) |
投稿时间:2008-03-15 修订日期:2008-05-16 |
DOI: |
中文关键词: 干扰素诱导剂 聚肌胞 配对 温度 金属离子 |
英文关键词: Interferon inducer Polyinosinic-polycytidylic acid Synthesis Temperature Metallic cations |
基金项目:国家863计划项目(2003AA622070)和国家科技部十一五科技支撑计划项目与养殖技术示范(2006BAD09A11)共同资助 |
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中文摘要: |
为提高聚肌胞(Polyinosinic polycytidylic acid, polyI:C)的配对效果,本文研究了温度和金属离子对聚肌胞配对的影响。实验结果显示,在45℃条件下合成的聚肌胞减色效应最强,说明在该温度下聚肌苷酸(Polyinosinic acid, PI)和聚胞苷酸(Polycytidylic acid, PC)配对最紧密;Na+、Ca2+、Mg2+、Mn2+和Zn2+能够增强聚肌胞双链结构的紧密性,当Na+浓度增加到0085mol/L后,聚肌胞的配对接近饱和; Ca2+、Mg2+、Mn2+和Zn2+对聚肌胞结构的保护效果基本一致,而Cu2+对聚肌胞结构具有明显破坏作用。建议采用45℃合成聚肌胞并添加适当浓度的Na+和Ca2+等增强其结构的紧密性,以避免机体内高活性RNA酶的降解而失去药效。 |
英文摘要: |
Effects of temperature and metallic cations on the synthesis of polyinosinic polycytidylic acid were tested to improve its structure. The results showed significant hypochromic effects of polyI:C formed at 45℃,which indicated that the best combination of polyI:C were achieved at this temperature, while the metallic cations including Na+、Ca2+、Mg2+、Mn2+ and Zn2+ could enhance the polyI:C combination. 0085mol/L PolyI:C combination achieved saturation when Na+ concentration was, and the divalent cations including Ca2+、Mg2+、Mn2+ and Zn2+ played positive effect on the combination. However, Cu2+ tend to destroy the double stranded structure. It is suggested that polyI:C should be made at 45℃ and suitable concentration of Na+ and Ca2+should be added to make its structure more tight in order to avoid RNase’s digesting. This result is useful for synthesizing polyI:C at a high quality. |
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