MP shouldn't basically ever call vs UTG 3x. So likely that's a rec and he has wider range than normal. Cbetting or check/calling is fine; Turn is fine vs bigger raise we have to fold though; River I'm not sure but can't be bad. Villain reps too narrow range (44,8x,JJ, KK+) as far as bluff you block some of them (T9,QT). So I don't hate folding river

The good ol 10nl shit spot with 8x, I fold turn like a bitch

I think flop is fine but it's not a range bet or you are too vulnerable to a raise so you need a checking range here and KcTc could go in that. On the turn you have nutted hands and good overs (AA, KK, QQ) which want to keep betting and better draws (AcXc) but also some hands that want to check and they need some draws to balance them out and now that you are here I think KTs should go in your turn checking range. When you call the raise you are only just getting the right price but you are also calling with too much of your range if you also call with KTs so I think it is a fold. You can call with JJ, 88, Jx, 8x, AA, KK, QQ and AcXc.
River is obviously nice for you but I don't think you should be there with this hand.