title: Skeletal muscle dedifferentiation during salamander limb regeneration.
abstract: Salamanders can regenerate entire limbs throughout their life. A critical step during limb regeneration is formation of a blastema, which gives rise to the new extremity. Salamander limb regeneration has historically been tightly linked to the term dedifferentiation, however, with refined research tools it is important to revisit the definition of dedifferentiation in the context. To what extent do differentiated cells revert their differentiated phenotypes? To what extent do progeny from differentiated cells cross lineage boundaries during regeneration? How do cell cycle plasticity and lineage plasticity relate to each other? What is the relationship between dedifferentiation of specialized cells and activation of tissue resident stem cells in terms of their contribution to the new limb? Here we highlight these problems through the case of skeletal muscle.
authors.affiliation: Karolinska Institute, Department of Cell and Molecular Biology, Berzelius väg 35, 17177 Stockholm, Sweden.
authors.forename: Heng
authors.initials: H
authors.lastname: Wang
authors.affiliation: Karolinska Institute, Department of Cell and Molecular Biology, Berzelius väg 35, 17177 Stockholm, Sweden. Electronic address: Andras.Simon@ki.se.
authors.forename: András
authors.initials: A
authors.lastname: Simon
mesh_terms: D000818:Animals; D002453:Cell Cycle / Q000235:genetics; D054337:Cell Dedifferentiation / Q000235:genetics*; D049109:Cell Proliferation / Q000235:genetics; D005121:Extremities / Q000254:growth & development; D018482:Muscle, Skeletal / Q000254:growth & development* / Q000378:metabolism; D012038:Regeneration / Q000235:genetics*; D013234:Stem Cells / Q000502:physiology; D014562:Caudata / Q000235:genetics* / Q000254:growth & development