TSPO and cancer: Additionally, TSPO-specific ligands (Figure 1), such as N,N,-di-n-propyl-[2-(6,8-dichloro-2-(4-hydroxyphenyl)imidazo[1,2-a]pyridin-3-yl)]acetamide (CB185, 1) and [2-(4-chlorophenyl)-8-amino-imidazo[1,2-a]pyridin-3-yl]-N,N-di-n-propylacetamide (CB86, 2) have been identified as agents able to induce apoptosis and cell cycle arrest in cancer cells [17].