Synthetic silk developer Spiber spun out of Keio University in 2007 and has now raised a total of more than $260m.

Spiber, a Japan-based synthetic silk products developer spun out of Keio University, has received approximately ¥5bn ($44m) in a round led by public-private partnership Cool Japan Fund, the Bridge reported on Saturday.
Cool Japan Fund invested $17.6m in the round, however other investors were not disclosed.
Founded in 2007 from Keio’s Institute for Advanced Biosciences, Spiber is developing a manufacturing process for products made of synthetic silk proteins rather than the natural form generally collected from insects such…