Oprah Winfrey to star in Henrietta Lacks movie

Oprah Winfrey is to take on a rare acting role in a new film about Henrietta Lacks, a woman whose cells became instrumental in the field of medical research.

She is also set to star in new TV show Greenleaf on her Oprah Winfrey Network.

According to Deadline, the media mogul will headline The Immortal Life of Henrietta Lacks, a film for HBO that she will also executive produce.