For anyone looking to automate their protein expression platform, the book “High-Throughput Protein Production and Purification” that was published in July 2019 (ISBN 978-1-4939-9624-7) is an excellent read. 

According to a relatively newly published journal article (Bielser et al. Aug 20 2019, J Biotech), there has been a renewed interest in the science community in perfusion cell culture technologies for continuous and efficient production of therapeutic recombinant proteins.