Designed, synthetically accessible bryostatin analogues potently induce activation of latent HIV reservoirs in vitro
作者:Brian A. DeChristopher、Brian A. Loy、Matthew D. Marsden、Adam J. Schrier、Jerome A. Zack、Paul A. Wender
DOI:10.1038/nchem.1395
日期:2012.9
Bryostatin is a unique lead in the development of potentially transformative therapies for cancer, Alzheimer's disease and the eradication of HIV/AIDS. However, the clinical use of bryostatin has been hampered by its limited supply, difficulties in accessing clinically relevant derivatives, and side effects. Here, we address these problems through the step-economical syntheses of seven members of a new family of designed bryostatin analogues using a highly convergent Prins-macrocyclization strategy. We also demonstrate for the first time that such analogues effectively induce latent HIV activation in vitro with potencies similar to or better than bryostatin. Significantly, these analogues are up to 1,000-fold more potent in inducing latent HIV expression than prostratin, the current clinical candidate for latent virus induction. This study provides the first demonstration that designed, synthetically accessible bryostatin analogues could serve as superior candidates for the eradication of HIV/AIDS through induction of latent viral reservoirs in conjunction with current antiretroviral therapy. Simplified bryostatin analogues are shown to potently induce latent HIV expression in vitro. These analogues display comparable or better potency when compared with bryostatin. Moreover, they are up to 1,000-fold more potent in inducing latent HIV expression than prostratin, the current lead preclinical candidate.
苔藓抑素是开发癌症、阿尔茨海默病和根除艾滋病毒/艾滋病潜在变革疗法的独特先导药物。然而,苔藓抑素的临床使用因其供应有限、难以获得临床相关衍生物以及副作用而受到阻碍。在这里,我们使用高度收敛的 Prins 大环化策略,通过一步经济地合成设计的苔藓抑素类似物新家族的七个成员来解决这些问题。我们还首次证明,此类类似物在体外有效诱导潜在的 HIV 激活,其效力与苔藓抑素相似或更好。值得注意的是,这些类似物在诱导潜伏 HIV 表达方面的效力比 Prostratin(目前用于诱导潜伏病毒的临床候选药物)强 1,000 倍。这项研究首次证明,设计的、可合成的苔藓抑素类似物可以通过诱导潜伏病毒库并结合当前的抗逆转录病毒疗法,成为根除艾滋病毒/艾滋病的优质候选药物。简化的苔藓抑素类似物被证明可以在体外有效诱导潜在的 HIV 表达。与苔藓抑素相比,这些类似物显示出相当或更好的效力。此外,它们在诱导潜在 HIV 表达方面的效力比目前主要的临床前候选药物 Prostratin 强 1000 倍。