| Title |
Characterization of migration behavior of myogenic precursor cells in the limb bud with respect to Lmx1b expression
|
|---|---|
| Published in |
Brain Structure and Function, March 2004
|
| DOI | 10.1007/s00429-003-0373-y |
| Pubmed ID | |
| Authors |
H. Schweizer, R. L. Johnson, B. Brand-Saberi |
| Abstract |
Limb buds develop from lateral plate-derived stationary mesenchyme and are invaded by cells from extrinsic regions. The largest populations of these cells are myogenic precursor cells that originate from the lateral dermomyotomes. After detachment under the influence of SF/HGF, myogenic precursor cells migrate in a proximo-distal direction and populate a dorsal and ventral zone. The patterning mechanism leading to the segregation of dorsal and ventral myogenic cells is at present not understood. Lmx1b, a LIM homeodomain transcription factor expressed in the dorsal mesenchyme of the developing limb bud, forms a sharp dorso-ventral boundary of expression within the limb. We have investigated the mechanisms of dorso-ventral patterning of muscle precursor cells in the limb buds with respect to Lmx1b expression using quail-chick chimeras and transgenic mice. Although cells appeared to be capable of migrating either ventrally or dorsally, their migration was restricted to the position they had attained during normal development or in the experimental situation. They were never found to cross the dorso-ventral boundary. Immunohistochemistry and histological analysis of mice carrying a LacZ reporter gene under the control of the endogenous Lmx1b locus confirmed that myogenic precursors in the limb bud were devoid of Lmx1b expression. In addition, it was shown that Lmx1b is not only expressed at early stages of limb development but maintains its pattern, at least until after birth. The present study provides new insights into migratory pathways of myogenic precursor cells and reveals details of Lmx1b expression on a cellular basis within the limb. |
Mendeley readers
The data shown below were compiled from readership statistics for 27 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Canada | 1 | 4% |
| Unknown | 26 | 96% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 5 | 19% |
| Student > Ph. D. Student | 5 | 19% |
| Student > Bachelor | 4 | 15% |
| Professor | 3 | 11% |
| Student > Doctoral Student | 2 | 7% |
| Other | 5 | 19% |
| Unknown | 3 | 11% |
| Readers by discipline | Count | As % |
|---|---|---|
| Biochemistry, Genetics and Molecular Biology | 13 | 48% |
| Agricultural and Biological Sciences | 10 | 37% |
| Engineering | 1 | 4% |
| Unknown | 3 | 11% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 15 February 2009.
All research outputs
#8,535,472
of 25,374,917 outputs
Outputs from Brain Structure and Function
#675
of 2,020 outputs
Outputs of similar age
#22,491
of 63,400 outputs
Outputs of similar age from Brain Structure and Function
#1
of 5 outputs
Altmetric has tracked 25,374,917 research outputs across all sources so far. This one is in the 43rd percentile – i.e., 43% of other outputs scored the same or lower than it.
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