| First Author | Yoshikawa SI | Year | 2000 |
| Journal | Mech Dev | Volume | 91 |
| Issue | 1-2 | Pages | 439-44 |
| PubMed ID | 10704880 | Mgi Jnum | J:61348 |
| Mgi Id | MGI:1354816 | Doi | 10.1016/s0925-4773(99)00320-2 |
| Citation | Yoshikawa SI, et al. (2000) The ActR-I activin receptor protein is expressed in notochord, lens placode and pituitary primordium cells in the mouse embryo. Mech Dev 91(1-2):439-44 |
| abstractText | ActR-I is a type I serine/threonine kinase receptor which has been shown to bind activin and bone morphogenetic proteins (BMPs). To study the function of ActR-I, we have generated novel monoclonal antibodies that specifically recognize the extracellular domain of mouse ActR-I. We examined the level of ActR-I protein during mouse development by immunohistochemistry. We found that in the embryonic body, ActR-I protein first appears in a restricted part of the primitive streak region and is present throughout the length of notochord. Furthermore, ActR-I protein is expressed in the facial sensory organ primordia, including eye area, otic vesicle and olfactory placode, which all contain invaginating ectoderm. In addition, ActR-I is produced in pituitary primordium (Rathke's pouch), mammary buds and the epithelial layer of branchial arches. Interestingly, in the lens placodes and in early Rathke's pouch, ActR-I protein is transiently localized at the apical surface of the epithelial cells, indicating the presence of an apical-basal asymmetry in these cells. |
