天然产物研究与开发 ›› 2022, Vol. 34 ›› Issue (增刊1): 104-108.doi: 10.16333/j.1001-6880.2022.S.016

• 开发研究 • 上一篇    下一篇

黑眶蟾蜍Cathelicidin-DM抗菌肽功能研究

张   康,王桂喜,张金阳,韩芹芹,夏雪山,宋玉竹*   

  1. 昆明理工大学生命科学与技术学院,昆明 650500
  • 出版日期:2022-06-01 发布日期:2022-05-19
  • 基金资助:
    国家自然科学基金(3186130375)

Study on the function of cathelicidin-DM in Duttaphrynus melanostictus

ZHANG Kang,WANG Gui-xi,ZHANG Jin-yang,HAN Qin-qin,XIA Xue-shan,SONG Yu-zhu*   

  1. Faculty of Life Science and Technology,Kunming University of Science and Technology,Kunming 650500,China
  • Online:2022-06-01 Published:2022-05-19

摘要:

Cathelicidin-DM的广谱抑菌活性已被证明,该研究拟探索它的其他生物学活性,从而更加全面的了解Cathelicidin-DM。通过固相合成Cathelicidin-DM,对其进行抗氧化活性检测、溶血活性检测、凝集素活性检测和细胞毒性检测、肿瘤细胞毒性检测。结果表明Cathelicidin-DM对于ABTS+自由基清除活性很强,但对于DPPH自由基的清除活性相对较弱,具有一定的抗氧化活性,对小鼠巨噬细胞系RAW 264.7具有一定的细胞毒性,溶血活性、凝集活性、肿瘤细胞毒性均不明显。Cathelicidin-DM不仅具有广谱抑菌活性,而且具有抗氧化活性,或可作为生物类抗氧化剂使用。

关键词: 黑眶蟾蜍, cathelicidin-DM, 抗氧化活性, 溶血活性, 细胞毒性

Abstract:

The broad-spectrum antibacterial activity of cathelicidin-DM has been proven,and this study intends to explore its other biological activities to further promote its clinical application.cathelicidin-DM was synthesized by solid-phase synthesis,and the antioxidant activity,hemolytic activity,lectin activity,cytotoxicity and tumor cytotoxicity were detected.The results show that cathelicidin-DM has strong scavenging activity for ABTS+ free radicals,but relatively weak scavenging activity for DPPH free radicals,and has certain cytotoxicity to the RAW 264.7.Hemolytic activity,lectin activity,and tumor cell toxicity are not obvious.cathelicidin-DM not only has broad-spectrum antibacterial activity,but also has antioxidant activity.Solving its cytotoxicity will be a major pre-clinical challenge.Or it can be used as a biological antioxidant.

Key words: Duttaphrynus melanostictus, cathelicidin-DM, antioxidant activity, hemolytic activity, cytotoxicity

中图分类号:  R285.1