University publisher and college at university (1,1,1)

'university publisher and college' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'at university' is the wordplay.
I cannot really understand how this works, but
'at university' could be 'up' (to 'come up' is to arrive for term, e.g. at Oxford) and 'up' is found within the answer.
A single letter 'c' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?