Is it possible to add MEFComponent for Visual Studio extension at runtime?

I am thinking if its possible to load MEF components' assemblies during runtime instead of specifying in VSIXmanifest's asset.

I have to load different MEFComponents which would be read by my base extension and execute them. For instance, I would like to extend the VS Editor but the extension should work according to the dlls that is put in a predefined directory within a solution.

Thanks!