Proteus, previously backed by investors including Otsuka, Novartis, Medtronic, Itochu and Kaiser Permanente, has now secured more than $300m in total.

Biotech company Atox Bio has raised $23m from a syndicate of SR One, Lundbeckfond Ventures and OrbiMed for the treatment of flesh eating bacteria.

American Express-backed e-commerce platform Deem has raised $50m in new funding that will be spent on global expansion.

The Naspers-backed e-commerce company has reportedly raised $1bn in what will be India's largest ever venture round.

The Siemens-backed cybersecurity company has now raised more than $71m in total after closing its series E round.

Vidyo has received $20m in funding in a round featuring Juniper Networks to take its video conference calling platform further.

Salesforce made a strategic investment as part of the round, which increased NewVoiceMedia's overall funding to more than $110m.

The cloud content storage provider, backed by a host of corporates, has now raised almost $600m and will seek to float later this year.

The games developer has doubled its overall funding after raising $49m in a round backed by Sega, Gree and B Dash among others.

Big database creator Couchbase has raised $60m in a series E round that lifted its overall funding to $115m.