2010
DOI: 10.1007/s00441-010-1042-0
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Unusual development of light-reflecting pigment cells in intact and regenerating tail in the periodic albino mutant of Xenopus laevis

Abstract: Unusual light-reflecting pigment cells, “white pigment cells”, specifically appear in the periodic albino mutant (ap/ap) of Xenopus laevis and localize in the same place where melanophores normally differentiate in the wild-type. The mechanism responsible for the development of unusual pigment cells is unclear. In this study, white pigment cells in the periodic albino were compared with melanophores in the wild-type, using a cell culture system and a tail-regenerating system. Observations of both intact and cu… Show more

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Cited by 5 publications
(17 citation statements)
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“…These results coincide with previous reports that mitf and dct are expressed in melanin‐producing cells in X. laevis embryos (Kumasaka, Sato, Yajima, & Yamamoto, ; Kumasaka et al., ). It is likely that the expression of both mitf and dct in white pigment cells results in the formation of melanosomes at various stages of development, which has been described previously (Fukuzawa, ). Recently, tfec , another gene in the microphthalmia/transcription factor E (MiT/TFE) family ( mitf , tfe3 , tfeb , and tfec ), has been shown to be expressed in iridophores in zebrafish (Lister, Lane, Nguyen, & Lunney, ).…”
Section: Resultssupporting
confidence: 54%
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“…These results coincide with previous reports that mitf and dct are expressed in melanin‐producing cells in X. laevis embryos (Kumasaka, Sato, Yajima, & Yamamoto, ; Kumasaka et al., ). It is likely that the expression of both mitf and dct in white pigment cells results in the formation of melanosomes at various stages of development, which has been described previously (Fukuzawa, ). Recently, tfec , another gene in the microphthalmia/transcription factor E (MiT/TFE) family ( mitf , tfe3 , tfeb , and tfec ), has been shown to be expressed in iridophores in zebrafish (Lister, Lane, Nguyen, & Lunney, ).…”
Section: Resultssupporting
confidence: 54%
“…The Xenopus tadpole tail is particularly suited to examine gene expression differences between white pigment cells in the mutant and melanophores in the wild type. Only melanophores were present in the posterior region of the wild‐type tail, while in the mutant white pigment cells instead of melanophores were localized in this region (Fukuzawa, , ). Melanophores in the wild‐type tail looked black and did not reflect light; however, white pigment cells in the mutant tail looked brown under transmitted light, but white by reflecting light (Supporting Information Figure S2).…”
Section: Resultsmentioning
confidence: 99%
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