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Axial protocadherin (AXPC) regulates cell fate during notochordal morphogenesis.

ABSTRACT: The separation and specification of mesoderm into the notochord and somites involves members of the non-clustered ?-protocadherins. Axial (AXPC) and paraxial (PAPC) protocadherins are expressed in the early dorsal mesoderm and later become refined to the developing notochordal and somitic mesoderm, respectively. The role of PAPC in this process has been studied extensively, but the role of AXPC is poorly understood. Partial knockdown of AXPC causes a specific bent-axis phenotype, while more severe knockdown results in the loss of notochord formation. The inability of these embryos to develop a notochord is not due to a cell-sorting event via changes in cell adhesion during gastrulation, but rather this defect is manifested through the loss of axial mesoderm specification, but not general mesoderm induction. The results presented here show that AXPC functions in notochord morphogenesis by directing cell-fate decisions rather than cell-cell adhesion.

SUBMITTER: Yoder MD

PROVIDER: S-EPMC3197877 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature

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Axial protocadherin (AXPC) regulates cell fate during notochordal morphogenesis.

Yoder Michael D MD Gumbiner Barry M BM

Developmental dynamics : an official publication of the American Association of Anatomists 20110929 11

The separation and specification of mesoderm into the notochord and somites involves members of the non-clustered δ-protocadherins. Axial (AXPC) and paraxial (PAPC) protocadherins are expressed in the early dorsal mesoderm and later become refined to the developing notochordal and somitic mesoderm, respectively. The role of PAPC in this process has been studied extensively, but the role of AXPC is poorly understood. Partial knockdown of AXPC causes a specific bent-axis phenotype, while more seve ...[more]

PMID: 21960065

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