Natural proteins can guide active ingredients to diseased cells
After taking a pill, the drugs it contains are distributed throughout the body, reaching the tissues and cells affected by disease and performing their intended function. However, they also enter healthy cells, where they often cause more harm than good.
This research, published in Nature Communications, reveals a groundbreaking method for using natural human proteins to deliver active ingredients directly to diseased cells. Traditional drugs often drift through the body, affecting both healthy and diseased cells indiscriminately, causing more harm than intended. A team of scientists, led by professors Felix Hausch and Alexander Loewer from the Technical University of Darmstadt, has harnessed the power of natural cellular proteins to create targeted therapies.
The team developed small chemical compounds that can bind to disease-associated proteins present on diseased cells, effectively ushering in therapeutic agents to the intended cells. The researchers utilized a high-throughput conjugation chemistry method to identify these molecules, which they dubbed "CellTrap."
A key discovery in this study is the "CellTrap effect," a phenomenon where active substances accumulate significantly within cells, thereby enhancing the efficacy of the compounds. This effect was demonstrated in prostate cancer cells, which have higher levels of the protein FK506-binding protein 12 compared to normal prostate cells.
By exploiting this difference, the researchers were able to direct a cytotoxic drug specifically to cancer cells, causing only those cells to die while healthy cells remained unharmed. This development represents a promising new tool for directing therapeutic agents precisely where they are needed, minimizing damage to healthy cells.
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