The e-commerce company has contributed a possible $200m to what could eventually be a $650m series F round for the instant messaging service.

Travel booking website Lvmama has received series E capital from tourism company Jinjiang International that increased its total funding to more than $150m.

The e-commerce company, which includes Naspers and IDG among its shareholders, has now raised almost $3bn since it was founded.

Cisco, Salesforce, ServiceNow and SAP-backed Sapphire Ventures all took part in the integration platform provider's latest round, raised at a $1.5bn valuation.

Baidu has invested an undisclosed sum in the content discovery platform, which raised $117m in the first tranche of its series E round in February.

Lyft has secured a $150m extension to a $530m series E round led by Rakuten in March, with $100m of the new funding comping from Icahn Enterprises.

Fred Hutchinson spin-out Adaptive Biotechnologies raises $195m for immunotherapy treatments.

The e-signature company, backed by Comcast, Samsung, BBVA, NTT, Recruit, Mitsui, Google, Telstra and Salesforce, has now raised $440m in total.

The Rakuten-backed social network raised the round's $367m first tranche in March and has now secured more than $1.3bn in total funding.