Abstract
Abstract The mouse Hox 2.1 gene contains a homeobox sequence and is therefore a candidate for a vertebrate gene involved in the control of embryonic patterning or positional specification. To investigate this possibility, we have used in situ hybridization to determine the pattern of Hox 2.1 expression during mouse embryogenesis. At 8·5 days post coitum, Hox 2.1 is expressed at a low level in the posterior neuroectoderm and mesoderm, and in the neuroectoderm of the presumptive hindbrain. At 12·5 days p.c., Hox 2.1 is expressed in an anteroposterior restricted domain extending from the hindbrain throughout the length of the spinal cord, predominantly in the dorsal region. Between 12·5 and 13·5 days p.c. the domain becomes localized to the occipital and cervical regions. We also detect Hox 2.1 RNA in the embryonic lung, stomach, mesonephros and metanephros, as well as in myenteric plexus, dorsal root ganglia and the nodose ganglion, and in mature granulocytes. The embryonic expression of Hox 2.1 in neural tissue is compared with that of Hox 3.1, which also shows anteroposterior restricted domains of gene expression. These patterns of expression are not clearly consistent with Hox 2.1 or Hox 3.1 having roles in segmental patterning. However, the data are consistent with these genes having regulatory roles in anteroposterior positional specification in the neuroectoderm and mesoderm, and suggest that Hox 2.1 may also have functions during organogenesis.
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Dates
Type | When |
---|---|
Created | 4 years, 4 months ago (April 23, 2021, 2:20 p.m.) |
Deposited | 1 year, 3 months ago (May 10, 2024, 5:11 a.m.) |
Indexed | 1 month, 3 weeks ago (July 6, 2025, 1:45 p.m.) |
Issued | 37 years, 7 months ago (Jan. 1, 1988) |
Published | 37 years, 7 months ago (Jan. 1, 1988) |
Published Online | 37 years, 7 months ago (Jan. 1, 1988) |
Published Print | 37 years, 7 months ago (Jan. 1, 1988) |
@article{Holland_1988, title={Spatially restricted patterns of expression of the homeobox-containing gene Hox 2.1. during mouse embryogenesis}, volume={102}, ISSN={1477-9129}, url={http://dx.doi.org/10.1242/dev.102.1.159}, DOI={10.1242/dev.102.1.159}, number={1}, journal={Development}, publisher={The Company of Biologists}, author={Holland, Peter W. H. and Hogan, Brigid L. M.}, year={1988}, month=jan, pages={159–174} }