Now researchers have found a way to grow gold nanoparticles directly in cancer cells within 30 minutes, which can help imaging and even heat and kill tumors. In previous studies, gold stars, nanotubes and other nanoparticle structures have been used to fight cancer, but one of the main obstacles is how to bring these substances into tumors. < / P > < p > in the new study, researchers have found a way to grow gold directly inside cancer cells. The advantage of this method is that it does not need to have a high concentration of gold in the cell, and this method is faster than other methods. < / P > < p > the team used polyethylene glycol (PEG) as the carrier of ionic gold, which is essentially a gold salt dissolved in liquid. When used in cancer, the acidic cell microenvironment converts gold from ionic form to plasma gold nanoparticles. The team says this can happen in 30 minutes, much faster than other treatments that take 24 hours or more. < / P > < p > the researchers further studied this process in mice. They first cultured gold nanoparticles in tumors of living mice, and then heated them with a laser to kill cancer cells. Although this method has been proved in the past, gold usually did not grow inside cells. < / P > < p > “the intracellular formation and nuclear migration of these gold nanoparticles provide a very promising method for drug delivery applications,” said dipanjan pan, the corresponding author of the study. Global Tech