A New York state lawsuit is renewing longstanding questions about where some members of the billionaire Sackler family have invested the wealth they amassed from Purdue Pharma LP, the drugmaker accused of helping ignite the U.S. opioid epidemic.

Versant Ventures announced the acquisition of portfolio company BlueRock Therapeutics by Bayer AG for up to $1 billion in total value. For the firm, it represents another in a series of significant transactions by Versant-created companies founded on globally sourced cutting-edge science. A common aspiration of each Versant start-up is to pioneer a new generation of important medicines. Other recent examples include Century, Therachon, Black Diamond, Jecure, Inception 5, Crispr and Quanticel.

The anti-bacterial gel, which can be targeted to attack specific forms of bacteria, holds promise for numerous beneficial applications in medicine and environmental protection.

People with chronic diseases like arthritis, diabetes and heart disease may one day forego the daily regimen of pills and, instead, receive a scheduled dosage of medication through a grape-sized implant that is remotely controlled.