CCL2 and atherosclerosis: MCP-1 plays a crucial role in the proliferation of monocytes, inflammation, and the pathogenesis of many diseases [21,22,23,24], and spherical MCP-1 PAMs consisting of DSPE-PEG2000 were previously reported to target monocytes in a murine model of atherosclerosis and showed potential as nanodiagnostic agents [1,2,4].