Did Bach ever use melodic minor keys in chorales?

Question

For example, E Melodic Minor would have C#, allowing for a ii7-V-I cadence.

Answer 1

Bach did write chorals in the minor keys, but there is no melodic minor key, only melodic minor scales. In using a melodic minot line ascending to the tonic, the natural progression would be a dormant 7th to Tonic.