1 Faculty of Science, SDU2 Department of Biochemistry and Molecular Biology, Faculty of Science, SDU3 unknown4 Department of Biochemistry and Molecular Biology, Faculty of Science, SDU
This paper deals with the expression and distribution of casein kinase 2 (CK-2) subunits in mouse embryos at different developmental stages. Expression was investigated at the mRNA level of CK-2 alpha- and beta-subunits by in situ hybridization and distribution at the protein level by immunohistochemistry using CK-2-alpha- and CK-2-beta-specific antibodies, respectively. In general both methods gave similar results. In earlier stages of mouse embryonic development (day 10.5 after coitus) CK-2 was more expressed in neuroepithelia than in all other tissues. From day 11.5 after coitus on, high expression of CK-2 was detected in all epithelia. From day 16.5 on, all tissues and anlagen of the fetus involved in organogenesis revealed a higher CK-2 expression as compared with secondary mesenchyma. The only difference between in situ hybridization and immunocytochemistry was observed in the skin. Transcripts of CK-2 were found mostly in the basal layer of the epidermis and in the nuclei of keratinocytes, whereas CK-2 protein was almost exclusively found in the cytoplasm of epidermal cells.
Acta Anatomica, 1994, Vol 149, Issue 1, p. 13-20
Animals; Casein Kinases; Immunohistochemistry; In Situ Hybridization; Mice; Protein Kinases