Aim To investigate the biological effects of ectopically expressing a constitutively active transcription factor Gli2(aGli2) in murine astrocytes.Methods A lentivirus vector which could express aGli2 was constructed.Lentivirus was packaged,the murine astrocytes were infected,and biological effects were indentified.Results The astrocytes with ectopic aGli2 obtained the ability to form neurospheres after 13 days’ culture in neural stem cell medium.Structurally,the neurospheres derived from aGli2 astrocytes we...