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首次发现癌症相关酶类抑制剂

首页 » 研究 » 肿瘤 2014-11-25 生物谷 赞(2)
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近日有研究揭示,酸性酰胺酶(AC)在黑素瘤、肺癌及前列腺癌细胞中可以被正向调节,因此酸性酰胺酶或许就可以成为一种新型靶点来帮助开发新型合成型的抑制剂化合物来治疗上述癌症。

  近日有研究揭示,酸性酰胺酶(AC)在黑素瘤、肺癌及前列腺癌细胞中可以被正向调节,因此酸性酰胺酶或许就可以成为一种新型靶点来帮助开发新型合成型的抑制剂化合物来治疗上述癌症。刊登在本周的国际杂志Angewandte Chemie International Edition上的一篇研究论文中,来自加州大学欧文分校等处的研究人员就首次描述了一类酸性酰胺酶的抑制剂,其或许可以帮助提高临床化疗的效率。

  酸性酰胺酶(AC)是由基因ASAH1所编码的,其在细胞命运的调节上扮演着重要的角色,其也可以调节促老化/死亡信号和促生存信号之间的平衡;ASAH1基因的突变和一种名为法伯疾病的溶酶体贮积症(lysosomal storage disorder)及脊髓性肌萎缩疾病直接相关。

  文章中,研究者Daniele Piomelli表示,我们开发了一种潜在的系统性的针对胞内酸性酰胺酶的活性小分子抑制剂;体内实验研究中,研究者发现,利用这种新型抑制剂抑制酸性酰胺酶可以促使促老化/死亡信号和促生存信号之间的平衡发生倾斜,即更利于促老化或死亡信号的释放。
  研究者希望酸性酰胺酶的抑制剂或许有一天可以用于作为化疗致敏剂来增强抗肿瘤药物的癌症杀灭能力,目前研究人员的研究发现为开发新型的治疗制剂用于治疗癌症等相关疾病提供了新的基础和平台。(转化医学网360zhyx.com)
  原文:doi:10.1002/anie.201409042
  PMC:
  PMID:
  Benzoxazolone Carboxamides: Potent and Systemically Active Inhibitors of Intracellular Acid Ceramidase?
  Dr. Daniela Pizzirani1,?, Dr. Anders Bach1,?, Dr. Natalia Realini1, Dr. Andrea Armirotti1, Dr. Luisa Mengatto1, Dr. Inga Bauer1, Dr. Stefania Girotto1, Dr. Chiara Pagliuca1,3, Dr. Marco De Vivo1, Dr. Maria Summa1, Dr. Alison Ribeiro1 andProf. Daniele Piomelli1,2,*
  The ceramides are a family of bioactive lipid-derived messengers involved in the control of cellular senescence, inflammation, and apoptosis. Ceramide hydrolysis by acid ceramidase (AC) stops the biological activity of these substances and influences survival and function of normal and neoplastic cells. Because of its central role in the ceramide metabolism, AC may offer a novel molecular target in disorders with dysfunctional ceramide-mediated signaling. Here, a class of benzoxazolone carboxamides is identified as the first potent and systemically active inhibitors of AC. Prototype members of this class inhibit AC with low nanomolar potency by covalent binding to the catalytic cysteine. Their metabolic stability and high in vivo efficacy suggest that these compounds may be used as probes to investigate the roles of ceramide in health and disease, and that this scaffold may represent a promising starting point for the development of novel therapeutic agents.(转化医学网360zhyx.com)
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