Jan 20, 2017 (YEARS BEFORE COVID)
Moderna hits safety problems in bold bid to reinvent medicine:
The company’s premise: Using custom-built strands of messenger RNA, known as mRNA, it aims to turn the body’s cells into ad hoc drug factories, compelling them to produce the proteins needed to treat a wide variety of diseases.
But mRNA is a tricky technology. Several major pharmaceutical companies have tried and abandoned the idea, struggling to get mRNA into cells without triggering nasty side effects.