GJA1 and myocardial infarction: Han et al reported that ferritin nanoparticles (IONPs) significantly enhance the expression of connexin 43 (Cx43), an intercellular gap junction protein, in cardiomyocytes, which is essential for generating an improved therapeutic potential when co-cultured with mesenchymal stem cells (MSCs).[23] These measures for treating MI may be related to the properties of ferritin.