- Enhanced autophagic cell death in expanded polyhistidine variants of HOXA1 reduces PBX1-coupled transcriptional activity and inhibits neuronal differentiation. Paraguison, R.C., Higaki, K., Yamamoto, K., Matsumoto, H., Sasaki, T., Kato, N., Nanba, E. J. Neurosci. Res. (2007)