PURPOSE: A magnetic fluorescent nanoparticle imaging probe and a composition for probing a target molecule, comprising the same are provided to diagnose and treat diseases.;CONSTITUTION: A magnetic fluorescent nanoparticle image probe for detecting a target molecule contains: a magnetic nanoparticle with a coating layer having fluorophore and bio-compatible materials; a nucleic acid probe which is conjugated to the coating layer and comprises an area which is hybridizable with the target molecules; and a molecule beacon having an oligomer which is conjugated with a quencher. The magnetic nanoparticle is a metal material, magnetic material, or magnetic alloy. The metal material is Pt, Pd, Ag, Cu, or Au. The magnetic material is Co, Mn, Fe, Ni, Gd, Mo, MM'2O4, or MpOq. The biocompatible material is silica, polymer, lipid, or dextran.;COPYRIGHT KIPO 2012
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