Replies to post #17 on Century Therapeutics Inc (IPSC)

[jondoeuk]

According to a medical doctor on twitter they haven't been able to secure a source for the cbNKs. A second Fc receptor, CD64, binds to the same IgG's as CD16a, but with more than a 30-fold higher affinity. However, it is typically only expressed on myeloid cells, not NKs. FATE created a recombinant receptor consisting of the extracellular region of CD64 with transmembrane and intracellular regions of CD16a. Not only did they show activity, but additionally, the higher affinity of allowed for mAbs to be pre-adsorbed and improved targeting without additional mAb use. Also, they could still mix and match mAbs as well https://ashpublications.org/blood/article/136/Supplement%201/10/470430/Engineered-iPSC-Derived-NK-Cells-Expressing