Bone targeted new zoledronate derivative: design, synthesis, 99mTc-coupling, in-silico study and preclinical evaluation for promising osteosarcoma therapy

Silybin loaded Ag-nanoparticles as a drug delivery system for solid tumor theragnosis: Extraction, radioiodination, and biodistribution study

Biocompatible silver nanoparticles (AgNPs) are employed with an active ingredient of milk thistle extract, silybin (SIB), to treat cancers. Strong cytotoxic effects of SIB-AgNPs against two distinct cell lines (MCF-7 and HepG2) are observed on a stable nano-platform that contains spherical nanoparticles within a limited size range. With a high radiochemical purity, radioiodination of SIB-AgNPs was accomplished. The investigation on the biodistribution of [131I]iodo-SIB-AgNPs in mice-bearing tumors showed that SIB-AgNPs prefer localization in tumor tissue. In conclusion, this work strengthens the case for [131I]iodo-SIB-AgNPs as an effective theranostic agent for tumor imaging and treatment.

Novel pyridine bearing pentose moiety-based anticancer agents: design, synthesis, radioiodination and bioassessments

Pyridine compounds are one of the most important heterocyclic derivatives showing wide ranges in biological and pharmacological activities. Green chemistry eliminates or reduces the generation of hazardous compounds. It prevents pollution at a molecular level. The microwave technique used in heterocyclic compound synthesis is also an important branch of green chemistry techniques. In this study, we report designing and synthesizing a new pyridine-bearing pentose moiety via a one-pot multicomponent reaction using D-glucose and also investigate its behavior and reactivity toward some simple and heterocyclic amino derivatives. The chemical structures of the synthesized compounds were characterized and tested for their cytotoxic activities. Some of the test compounds exhibited slight to high cytotoxic activities against Caco2 (colon cancer) cells, HepG2 (hepatocellular carcinoma) cells and MCF-7 (human breast cancer) cells by MTT assay. The results showed clearly that compound 4 and compound 8 displayed strongest to moderate cytotoxic activity against the HepG2, Caco2 and MCF-7 respectively and compound 1 showed good activity against MCF-7 in comparison to the standard anticancer drug doxorubicin. These data were by cytopathological examination. An in-vivo radioactive tracing study of compound 4 proved its targeting ability to sarcoma cells in a tumor-bearing mice model. Our findings suggest that the synthesized compounds may be promising candidates as novel anticancer agents.

Synthesis, 99mTc-labeling, in-vivo study and in-silico investigation of 6-amino-5-[(bis-(2-hydroxy-ethyl)-amino]methyl]2-methyl pyrimidin-4-ol as a potential probe for tumor targeting

This study aimed to synthesize a new pyrimidine derivative with a good synthesis yield of 87% to act as a new cancer marker after radiolabeling with Tc-99m in a high radiochemical yield of 92.3%. In-vivo study in tumor-bearing Swiss albino mice model revealed promising data with high uptake in cancer. Docking study showed good binding interactions of the radiosynthesized complex at the binding site. In conclusion, this novel complex could be a potential probe for cancer targeting.