Carlile G W, Tatton W G, Borden K L
Department of Physiology and Biophysics, Dalhousie University, Halifax, Nova Scotia, Canada.
Biochem J. 1998 Nov 1;335 ( Pt 3)(Pt 3):691-6. doi: 10.1042/bj3350691.
The promyelocytic leukaemia (protein) (PML) localizes to multiprotein complexes known as PML nuclear bodies. We found that glyceraldehyde-3-phosphate dehydrogenase (GAPDH) co-immunoprecipitates with PML and co-localizes with PML in nuclear bodies. RNase treatment disrupts the ability of PML and GAPDH to both co-localize and co-immunoprecipitate, indicating that the association between PML and GAPDH depends on the presence of RNA. Disruption of PML bodies contributes towards reduced apoptosis in acute promyelocytic leukaemia and GAPDH induces apoptotic neuronal death. The GAPDH-PML interaction may be involved in the regulation of apoptosis.
早幼粒细胞白血病(蛋白)(PML)定位于被称为PML核体的多蛋白复合物中。我们发现,甘油醛-3-磷酸脱氢酶(GAPDH)与PML进行共免疫沉淀,并与PML在核体中共定位。核糖核酸酶处理会破坏PML和GAPDH共定位及共免疫沉淀的能力,这表明PML和GAPDH之间的关联依赖于RNA的存在。PML体的破坏导致急性早幼粒细胞白血病中细胞凋亡减少,而GAPDH可诱导凋亡性神经元死亡。GAPDH与PML的相互作用可能参与细胞凋亡的调控。