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Drug side effects, breakthrough study promises to tailor medicines for patient’s needs

Medicine side effects: In a significant research conclusion, scientists have developed a new technique wherein medicines will target specific needs of patients.

health Updated: Jul 09, 2018 17:48 IST
Asian News International
Asian News International
Asian News International
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Medicine side effect: The technique would be beneficial for cancer and neurological disease patients.(Getty Images/iStockphoto)

Side effects of medicines may soon be a thing of the past. A new technique for precisely targeting molecules within cells is paving the way for safer medicines that are free of side effects. Researcher J. Julius Zhu and his colleagues have developed a way to manipulate molecules from compartment to compartment within individual cells.

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The same molecules do different things depending on their location, the researchers determined. By manipulating the molecules, scientists can determine exactly which locations to target while avoiding locations that would cause harmful side effects. “The problem with side effects is caused because you just could not distinguish the molecules doing different things in the same cell,” said Zhu. “If you blocked a molecule, you blocked it regardless of what it was doing. And that usually has unwanted side effects. Almost every drug that can treat diseases has side effects, either major or minor, but usually they always have something,” he added.

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Until now, drugs have targeted molecules in a very general way. If a molecule was thought to be harmful, researchers might try to develop a drug to block it entirely. But Zhu’s new work highlights the downside of that approach. A molecule might be causing problems because of what it’s doing in one part of the cell, but, at the same time, that same molecule is doing something entirely different in other parts. So shutting it down entirely would be like trying to solve the problem of traffic congestion by banning cars.

Now, rather than crudely trying to block a molecule regardless of its many functions, doctors can target a specific molecule doing a specific thing in a specific location. That adds a new level of precision to the concept of precision medicine - medicine tailored exactly to a patient’s needs. Zhu and his team of researchers think the technique will be useful for many different diseases, but especially for cancers and neurological conditions such as autism and Alzheimer’s.

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Those, in particular, will benefit from a better understanding of what molecules at what locations would make good targets. The technique will also speed up the development of new treatments by letting researchers more quickly understand what molecules are doing and which should be targeted. “The idea [behind the technique] is actually very simple,” Zhu added. The study appears in the Neuron journal.

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First Published: Jul 09, 2018 10:11 IST