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Drug Delivery

Mantra raises $25 million for exosome-based drug delivery

by Ryan Cross
August 13, 2020 | A version of this story appeared in Volume 98, Issue 31
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Most Popular in Pharmaceuticals

Mantra Bio, a San Francisco–based start-up quietly founded in 2016, has raised $25 million in series A financing to develop exosome-based therapies. Exosomes are lipid vesicles, released from cells, that usually contain RNA or proteins. Mantra is one of a number of start-ups looking to hijack exosomes for drug delivery. The firm specializes in discovering and engineering exosomes that can target specific cells or tissues in the body.

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