The 15-year-old is due to appear at Stratford Youth Court later this morning
The 15-year-old was arrested on suspicion of GBH yesterday and charged in the early hours.
He is due to appear at Stratford Youth Court later this morning.
The victim, a 16-year-old boy, remains in hospital in a critical but stable condition.
Enquiries into the incident continue.
Anyone who has information that could assist police with the investigation, should call 101 ref CAD 1150/12 January.
Any young people who either have information about violence or knife crime, can visit www.fearless.org where they can pass on information anonymously.
If you need help or information to support someone you suspect is involved in knife crime, or you want assistance yourself, then you can visit www.knifefree.co.uk or LondonNeedsYouAlive.
Tags: east London, Poplar