| 摘要 |
A method for identifying the genetic factors responsible for cell differentiation based on expression cloning is described. To determine what genetic factor leads to the differentiation of a cell from a beginning cell type to a target cell type, a cDNA library is obtained, packaged in an expression vector and transformed into cells of the beginning cell type. The expression vector also preferable includes a marker gene system under the control of a tissue specific promoter operable in the tissue type of the target cell type. The transformed cells are then cultured until cell differentiation begins, then the culture is screened or selected to identify the cells which undergo differentiation toward the target cell type. By examining the cDNA insert in the differentiated cells, the genetic factor responsible for the differentiation process can be identified. |
