新化合物可有助于开发针对稀有小儿癌的靶向疗法
最近发现的两种化合物在治疗ewing肉瘤的临床前研究中显示了许多罕见的癌症,这主要影响儿童和青少年。
两个都化合物抑制EWS-FLI1的活性,属于一类称为转录因子的分子,这些分子在其中发挥关键作用基因调节。在EWING SARCOMA中,EWS-FLI1在错误地切换某些基因或“ON”或“OFF”,导致不受控制的细胞增殖,最终肿瘤。虽然由于其结构,它们难以靶向药物治疗,但转录因子为开发更好的精确疗法而提供了重要的机会,这些疗法更好地表现更好并具有更少的副作用。
"Our current approach—a combination of chemotherapy, radiation and surgery—is a tough road and isn't extremely effective in patients whose cancer has spread or relapsed," said senior author Patrick Grohar, M.D., Ph.D., an associate professor at Van Andel Research Institute and a pediatric oncologist at Spectrum Health Helen DeVos Children's Hospital. "EWS-FLI1 is unique to Ewing sarcoma and is present in the majority of cases, which offers an excellent opportunity for developing precise therapies that combat cancer cells with less chance of affecting normal, healthy cells. At the same time, these findings lay the groundwork for devising ways to target transcription factors in other cancers, which historically has been challenging."
新化合物来自Mithramycin,该药物以前被研究为母羊肉瘤的潜在治疗。它们不仅可以比Mithramycin更有效地抑制EWS-FLI1活性,但新化合物也表现出毒性更低,使其具有进一步研究的有吸引力的候选人。
“虽然我们希望我们的调查结果将导致新的,更有效地对母羊赛萨马州的疗法,但我们也认为他们作为目标的先例转录因素在其他肿瘤类型中,“Grohar说。”我们很兴奋完成临床前工作,这将有助于我们优先考虑翻译中的一种化合物。“
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