GONUTS has been updated to MW1.31 Most things seem to be working but be sure to report problems.
PMID:15621531
| Citation |
Minguillon, C, Del Buono, J and Logan, MP (2005) Tbx5 and Tbx4 are not sufficient to determine limb-specific morphologies but have common roles in initiating limb outgrowth. Dev. Cell 8:75-84 |
|---|---|
| Abstract |
Morphological differences between forelimbs and hindlimbs are thought to be regulated by Tbx5 expressed in the forelimb and Tbx4 and Pitx1 expressed in the hindlimb. Gene deletion and misexpression experiments have suggested that these factors have two distinct functions during limb development: the initiation and/or maintenance of limb outgrowth and the specification of limb-specific morphologies. Using genetic methods in the mouse, we have investigated the roles of Tbx5, Tbx4, and Pitx1 in both processes. Our results support a role for Tbx5 and Tbx4, but not for Pitx1, in initiation of limb outgrowth. In contrast to conclusions from gene misexpression experiments in the chick, our results demonstrate that Tbx5 and Tbx4 do not determine limb-specific morphologies. However, our results support a role for Pitx1 in the specification of hindlimb-specific morphology. We propose a model in which positional codes, such as Pitx1 and Hox genes in the lateral plate mesoderm, dictate limb-specific morphologies. |
| Links |
PubMed Online version:10.1016/j.devcel.2004.11.013 |
| Keywords |
Animals; Blotting, Western/methods; Body Patterning/physiology; Bone and Bones/embryology; Bone and Bones/metabolism; Embryo, Mammalian; Embryonic Development/physiology; Extremities/embryology; Gene Expression Regulation, Developmental/genetics; Homeodomain Proteins/metabolism; Homeodomain Proteins/physiology; In Situ Hybridization/methods; Limb Buds/physiology; Mice; Mice, Transgenic; Models, Biological; Morphogenesis/physiology; Paired Box Transcription Factors; T-Box Domain Proteins/genetics; T-Box Domain Proteins/physiology; Transcription Factors/physiology |
| edit table |
Significance
Annotations
| Gene product | Qualifier | GO ID | GO term name | Evidence Code | with/from | Aspect | Notes | Status |
|---|---|---|---|---|---|---|---|---|
| edit table |
See also
References
See Help:References for how to manage references in GONUTS.
