Part of high-profile actor associated with part of ... (5)
I believe the answer is:
ileac
'part of' is the definition.
'ileac' can be an answer for 'part' (I have seen 'part of gut' mean 'ileac' so perhaps 'part' could also mean 'ileac'). I'm unsure of the 'of' bit.
'part of high-profile actor' is the wordplay.
'part of' says the answer is hidden in the clue.
'ILEAC' is hidden within 'high profile actor'.
'associated with' is the link.
Can you help me to learn more?
(Other definitions for ileac that I've seen before include "of tube in body" , "gutsy" , "an intestinal section" , "Concerned with the intestines" , "part of the small intestine" .)