通过 (-) - 大麻烯激活CB2受体,但不通过 (+) - 大麻烯激活CB2受体
Michael Udoh1, Marina Santiago1, Syed Haneef1
1Macquarie Medical School, Macquarie University, North Ryde, Australia.
Cannabis and cannabinoid research
|August 13, 2024
概括
该研究发现, (-) - 卡纳比克罗 (CBC) 是CB2受体中的活性反体,而 (-) - 卡纳比克罗和 (+) - 卡纳比克罗都激活TRPA1通道. 药用CBC制剂可能更有效,具有主导 (-) -CBC.
科学领域:
- 药理学 药理学是指药理学的学科.
- 大麻素科学 大麻素科学
背景情况:
- 卡纳比克罗 (CBC) 是一种已知与大麻CB2受体和TRPA1通道相互作用的较小大麻化合物.
- (-) - CBC和 (+) - CBC反体在这些相互作用中的特定作用仍然在很大程度上没有特征.
研究的目的:
- 在人体CB1,CB2和TRPA1受体上研究 (-) -CBC和 (+) -CBC反体的体外活性.
- 为了确定哪个CBC反体对受体激活负责.
主要方法:
- 使用奇拉色谱净化CBC反体的净化.
- 通过在转染的AtT20细胞中进行膜电位测试,评估CB1和CB2受体活性.
- 测量TRPA1激活使用细胞内测定在转染HEK293细胞.
主要成果:
- (-) -CBC表现出CB2受体的显著激活 (EC50 = 1.5μM),而 (+) -CBC在CB2不活跃到30μM.
- (-) -CBC在30μM时显示CB1受体的活性较弱,而 (+) -CBC则不活跃.
- (-) -CBC和 (+) -CBC都激活了TRPA1通道, (-) -CBC显示出略高的疗效.
结论:
- (-) -CBC是CB2受体的主要活性反体.
- 这两种CBC反体都在TRPA1通道表现出活性.
- 优化药用CBC制剂以准大麻素受体可能需要丰富 (-) - CBC反体.
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