Jonjo Shelvey, Henri Saivet, Andros Townsend and Seydou Doumbia all joined the club.
Steve McClaren’s side were one of the busier clubs during the January transfer window as they added four new faces across last month.
The first of those four were midfield duo Henri Saivet and Jonjo Shelvey, with Andros Townsend and striker Seydou Doumbia joining those two later on in the window.
And Coloccini says they are all good players who will add quality to the team, but they must help them to success at St James’ Park.
"We needed to strengthen the squad and they are very good players who will add quality to the team," he told nufc.com.
"However, it is important we help them. We cannot expect them to come in and do it all. We have to help them be a success here at Newcastle."
While Coloccini wants his side to help the new recruits as much as possible, it is obvious they will be hoping all four can be star men in the remaining games this season.
Those at the club have so far failed to perform up the standard that was expected, with arguable only Georginio Wijnaldum having proved a good signing in the summer.
That means they are in desperate need of one player, or several, stepping up and dragging them away from the relegation zone and McClaren will be hoping his new recruits can do that job.