The expression patterns of Mis1 is related with the glioma grade and the cytoplasmic Mis1 promotes angiogenesis

Abstract To investigate the expression patterns of Msi1 and its relationship with tumour grading and angiogenesis in human glioma. Msi1 expression and the angiogenesis labelled by CD31 were detected by immunohistochemical staining in glioma from Grade I to Grade IV. MVD–CD31 was counted respectively in nuclear and cytoplasmic positive areas of Msi1. There was weak expression of Msi1 in the adjacent normal brain tissue of glioma, and there were less MVD–CD31 than in glioma. Glioma showed strong expression and different patterns of Msi1. From Grade I to Grade IV glioma, the expression pattern of Msi1 was changed from nuclear into cytoplasmic pattern gradually ( P P P