Abstract
Andrographolide (Andro) derivatives can interfere with a variety of enzymes. To increase the cancer cell absorption of Andro and to enhance the therapeutic effect of breast cancer, nitro group substituted boron dipyrromethene (NBDP) was used as the carrier of Andro. Two NBDP based assemblies (NBDP-Andro and nano NBDPAndro@PEG) were synthesized and characterized by spectroscopic methods. The affinity of Andro with NBDP enhanced the emission of NBDP. The interaction of the compounds with lipase was also studied. NBDP-Andro can bind with lipase and form new species with an emission at 360 nm. Results demonstrate that the Andro of NBDP-Andro drives the interaction of compounds with protein (BSA) and lipase by inter-molecular forces. The large red shift emission at 611 nm of the NBDPAndro@PEG is observed and discussed. Also, the MTT assay confirms that Nano NBDPAndro@PEG can enhance the inhibition rate of the proliferation of MCF-7 breast cancer cells. Therefore, nitro substituted BODIPY can be a carrier of andrographolide for cancer treatment.
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