The dynamic expression pattern of B lymphocyte induced maturation protein-1 (Blimp-1) during mouse embryonic development.
We have analyzed the spatial and temporal patterns of B lymphocyte-induced maturation protein-1 (Blimp-1) expression during mouse embryonic development. Blimp-1 expression is induced early in the anterior definitive endoderm, mesoderm of head process, and prechordal plate. In ectoderm-derived tissues at later stages, Blimp-1 expression is found in the primitive photoreceptors of neural retina, in differentiated epithelial cells of epidermis, tongue, oral and nasal cavities, and in the precursors of internal root sheaths of hair follicles. In mesoderm-derived tissues, Blimp-1 expression is observed in splanchnopleure, a subset of somatopleure-derived cells in limb buds, and myotomes of somites. Blimp-1 is also expressed in mesenchyme of developing hand plates, digits, branchial arches, nasal processes, and external genitalia. Blimp-1 is present in mesenchyme-derived chondroblasts, supporting cells of taste buds, and papilla of teeth, hair follicles and taste buds. In endoderm-derived tissues, Blimp-1 expression in the foregut region is restricted to a subset of epithelial cells at the headfold stage while expression in the endodermal epithelium of midgut and hindgut persists from the headfold stage to birth. Finally, Blimp-1 is expressed in the migrating primordial germ cells.
Chang
David H
DH
Department of Microbiology, College of Physicians and Surgeons, Columbia University, 701 W 168th Street, New York, NY 10032, USA.
Cattoretti
Giorgio
G
Calame
Kathryn L
KL
D000818:Animals; D004475:Ectoderm / Q000378:metabolism; D005314:Embryonic and Fetal Development / Q000235:genetics*; D004707:Endoderm / Q000378:metabolism; D018507:Gene Expression Regulation, Developmental; D005854:Germ Cells / Q000378:metabolism; D007150:Immunohistochemistry; D008648:Mesoderm / Q000378:metabolism; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D000074462:Positive Regulatory Domain I-Binding Factor 1; D012097:Repressor Proteins / Q000235:genetics* / Q000378:metabolism; D014157:Transcription Factors / Q000235:genetics* / Q000378:metabolism
C513258:Prdm1 protein, mouse; D012097:Repressor Proteins; D014157:Transcription Factors; D000074462:Positive Regulatory Domain I-Binding Factor 1