[Effect of PDK1 on Neutrophil Differentiation].

Objective: To knock out PDK1 by using Vav-Cre and observe the effects of PDK1 knock out on the ratio, number and differentiation of neutrophil.

Methods: The PDK1 expression level of Vav-Cre;PDK1 mouse in the bone marrow cells was analyzed by RT-PCR. The effect of PDK1 on hematopoietic progenitor was observed by CFU-C assay, and the effect of PDK1 on the ratio and number of neutrophil was detected by flow cytometric analysis.

Results: The RNA expression level of bone marrow cells of Vav-Cre;PDK1 mouse was dramatically lower than that of the control mouse. The number of functional GMP was lower in Vav-Cre;PDK1 mouse in contrast to controls. The percentage and number of neutrophil were lower, but the percentage of premyelocyte/myelocytes was more than 2 times in Vav-Cre;PDK1 group compared with control groups.

Conclusion: PDK1 affects the process of the differention of hematopoietic stem cells to GMP, the neutrophil differention and maturation.