Aminonaphthalimide hybrids of mitoxantrone and amonafide as anticancer and fluorescent cellular imaging agents
作者:Alex D. Johnson、Rodrianne Zammit、Jasmine Vella、Mario Valentino、Joseph A. Buhagiar、David C. Magri
DOI:10.1016/j.bioorg.2019.103287
日期:2019.12
4-aminonaphthalimides were synthesised and their cellular fluorescent imaging, cytotoxicity and ability to induced apoptosis evaluated. The lead compound 1 was designed from the cross-fertilisation of the basic hydrophilic amino pharmacophore of mitoxantrone, and an aminonaphthalimide scaffold of the drug candidate, amonafide. The compounds are also fluorescent pH probes based on photoinduced electron transfer (PET)
合成了新型水溶性4-氨基萘酰亚胺,并对其细胞荧光成像,细胞毒性和诱导凋亡的能力进行了评估。根据米托蒽醌的基本亲水性氨基药效团和候选药物阿莫那肽的氨基萘酰亚胺支架的交叉受精设计了先导化合物1。这些化合物也是基于光致电子转移(PET)和内部电荷转移(ICT)的荧光pH探针。这些化合物对斯托克频移(> 90 nm)大的溶剂极性敏感,并提供发射色溶液(蓝色至黄色)。激发态p K a在水中测定的s为9.0–9.3,荧光量子产率为0.47–0.58。通过MTT测定,相差和荧光显微镜,在人癌细胞系K562和MCF-7上测试了化合物的细胞毒性和细胞荧光成像特性。具有柔性氨基烷基链的化合物1和3的GI 50与阿莫那肽相当,而具有刚性哌嗪部分和丁基链的化合物2和4的细胞毒性较小。用1的荧光显微镜可以观察到细胞内的微环境,举例说明了这种杂合分子如抗癌剂和荧光细胞成像剂的潜在用途。