Bis-oxazoline derivatives as ancillary ligands for bis-cyclometalated iridium complexes.

Organometallic iridium complexes with two cyclometalated ligands (ĈN) and one bis-oxazoline derived ancillary ligand (L^X), . (ĈN)Ir(L^X), are reported. The ĈN ligands are 1-phenylpyrazoline (ppz), 2-(4,6-difluorophenyl)pyridine (Fppy), 2-phenylpyridine (ppy), 1-phenylisoquinoline (piq).

Impaired odontogenic differentiation of senescent dental mesenchymal stem cells is associated with loss of Bmi-1 expression.

Introduction: Dental mesenchymal stem cells (dMSCs) might differentiate into odontoblast-like cells and form mineralized nodules. In the current study, we investigated the effects of senescence on odontogenic differentiation of dMSCs.

Methods: dMSCs were serially subcultured until senescence.