Smoothelin expression during chicken embryogenesis: Detection of an embryonic isoform
Copyright policy )Smoothelin expression during chicken embryogenesis: Detection of an embryonic isoform
AbstractTwo isoforms of a novel smooth muscle cell (SMC) ‐specific cytoskeletal protein, smoothelin, have been described. In the adult chick, the 55‐kDa smoothelin‐A is expressed in visceral SMC, whereas the 120‐kDa smoothelin‐B is the major product in vascular SMC. Chicken was chosen to study smoothelin expression during embryogenesis and neonatally. Smoothelin‐B was found in vascular SMC from stage 20 onward. In visceral SMC, smoothelin‐B was present from stage 29 until hatching. Perinatally, a strong up‐regulation of smoothelin synthesis was observed in visceral tissues, coinciding with a switch to the A‐isoform. Transient smoothelin synthesis was observed in the somites and the developing heart. Western blotting revealed in these tissues a 62‐kDa smoothelin isoform, designated smoothelin‐C. Expression of the smoothelin isoforms seems to be strictly controlled with respect to cell type and developmental stage and may be related to the mode of contraction of the different cells. © 2001 Wiley‐Liss, Inc.
- Maastricht University Netherlands
- Leiden University Medical Center Netherlands
DNA, Complementary, Time Factors, Myocardium, Blotting, Western, Muscle Proteins, Heart, Muscle, Smooth, Chick Embryo, Cytoskeletal Proteins, Somites, Animals, Protein Isoforms, Tissue Distribution, Cloning, Molecular, Chickens, In Situ Hybridization
DNA, Complementary, Time Factors, Myocardium, Blotting, Western, Muscle Proteins, Heart, Muscle, Smooth, Chick Embryo, Cytoskeletal Proteins, Somites, Animals, Protein Isoforms, Tissue Distribution, Cloning, Molecular, Chickens, In Situ Hybridization
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