Foxd3 controls melanophore specification in the zebrafish neural crest by regulation of Mitf
Open accessAbstract
We describe a mechanistic model whereby Foxd3, a forkhead transcription factor, prevents neural crest-derived precursors from acquiring a melanophore fate. Foxd3 regulates this fate choice by repressing the mitfa promoter in a subset of neural crest cells. mitfa is only expressed in a Foxd3-negative subset of neural crest cells, and foxd3 mutants show an increase in the spatial domain of mitfa expression, thereby suggesting that Foxd3 limits the mitfa domain. Furthermore, foxd3:gfp transgenic zebrafish reveal foxd3 expression in xanthophore precursors and iridophores, but not in terminally differentiated melanophores. Luciferase experiments and embryo mRNA injections indicate Foxd3 acts directly on the mitfa promoter to negatively regulate mitfa expression. Taken together, our data suggests the presence of Foxd3 in a subset of precursors leads to mitfa repression and suppression of melanophore fate. MITF, the human mitfa ortholog, has recently been described as an oncogene and implicated in various forms of melanoma. Understanding the mechanisms that regulate mitfa and melanophore development could prove informative in the treatment and prevention of these human diseases.
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mitfa is expressed initially in almost all neural crest cells.
“with mitfa being expressed initially in almost all NC cells [32]”
From A systems biology approach uncovers the core gene regulatory network governing iridophore fate choice from the neural crest (2018) · cites this paper as [32]
The Introduction (page unavailable) says that, in wild-type zebrafish, mitfa is expressed only in a subset of neural crest cells, not almost all of them. The Results section on migratory neural crest cells (page unavailable) also reports that mitfa and Foxd3 are largely mutually exclusive even at the earliest stages of reporter expression. (LLM, conf=0.87)
Checked by a reasoning model — may be wrong.
Experimental — accuracy not yet measuredIn the WT context, Sox10 and Tfec stay upregulated in mature pigment cells, Ltk and Pnp4a increase and reach positive steady-state, and Mitfa initially rises rapidly then drops to a lower level at differentiation stages.
“Specifically, in the WT context, it was crucial that Sox10 and Tfec stay upregulated in mature pigment cells, i.e. reach a positive steady-state. Similarly, Ltk and Pnp4a concentrations should increase and reach a positive steady-state. Mitfa levels should initially rise rapidly, reflecting the widespread expression of mitfa in all pigment cell progenitors [32], but should then drop to a distinct”
From A systems biology approach uncovers the core gene regulatory network governing iridophore fate choice from the neural crest (2018) · cites this paper as [32]
The Introduction says Mitf is among the earliest genes expressed in melanoblast precursors, and the Results section on the mitfa:gfp line documents early mitfa expression in cells identified as melanoblasts (no page numbers supplied). These passages support early expression, but not the cited phrase’s claim that mitfa is expressed in all pigment-cell progenitors. The citation is attached to that phrase, not to the surrounding steady-state predictions. (LLM, conf=0.85)
Experimental — accuracy not yet measuredSeveral requirements for iridophore development from the neural crest are known.
“Several requirements for iridophore development from the neural crest are known [5], [26], [27].”
Previous analyses using a foxd3:gfp transgenic line suggested that Foxd3 is expressed in mature iridophores.
“Previous analyses using a foxd3:gfp transgenic line have suggested that Foxd3 is expressed in mature iridophores [32].”
From A systems biology approach uncovers the core gene regulatory network governing iridophore fate choice from the neural crest (2018) · cites this paper as [32]
ltk, ednrb1, and pnp4a are known to be important for iridophore development.
“Included in this enrichment list are several factors known to be important for iridophore development, including ltk, ednrb1, and pnp4a [5], [26], [27].”
From Gene Expression Analysis of Zebrafish Melanocytes, Iridophores, and Retinal Pigmented Epithelium Reveals Indicators of Biological Function and Developmental Origin (2013) · cites this paper as [26]
The Discussion says Foxd3 appears to promote iridophore specification, but it does not address whether ltk, ednrb1, or pnp4a are important for iridophore development. Searches of our copy for those gene names and their expanded terms found no passage establishing the attributed claim. The indexed passages provide no page numbers. (LLM, conf=0.72)
Experimental — accuracy not yet measured
The iridophore enrichment list includes factors known to be important for iridophore development, including ltk, ednrb1, and pnp4a.
“Included in this enrichment list are several factors known to be important for iridophore development, including ltk, ednrb1, and pnp4a [5], [26], [27].”
From Gene Expression Analysis of Zebrafish Melanocytes, Iridophores, and Retinal Pigmented Epithelium Reveals Indicators of Biological Function and Developmental Origin (2013) · cites this paper as [26]
The Discussion describes a role for Foxd3 in iridophore specification, but does not connect ltk, ednrb1, or pnp4a to iridophore development or identify them in an enrichment list. Searches of our copy for those three gene names found no relevant passage. (LLM, conf=0.74)
Experimental — accuracy not yet measured
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Percentages, sums and reported differences re-computed from the paper’s own numbers.
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Mort, R. L., Jackson, I. J., & Patton, E. E. (2015) · Development · doi:10.1242/dev.106567 · Cited by 416 · see citing works
Higdon, C. W., Mitra, R. D., & Johnson, S. L. (2013) · PLoS ONE · doi:10.1371/journal.pone.0067801 · Cited by 125 · see citing works
Petratou, K., Subkhankulova, T., Lister, J. A., Rocco, A., Schwetlick, H., & Kelsh, R. N. (2018) · PLOS Genetics · doi:10.1371/journal.pgen.1007402 · Cited by 69 · see citing works
Self-citationPetratou, K., Spencer, S. A., Kelsh, R. N., & Lister, J. A. (2021) · PLOS ONE · doi:10.1371/journal.pone.0244794 · Cited by 55 · see citing works
Self-citation
- Authors
- Curran, K., Raible, D. W., & Lister, J. A.
- Affiliations
- University of Washington (US)
- Virginia Commonwealth University (US)
- Corresponding author
- Raible, David W.
- Lister, James A.
- ORCID
- Raible, David W.
- Venue
- Developmental Biology
- Publisher
- Elsevier BV
- Published
- 2009-08
- Volume
- 332
- Issue
- 2
- Pages
- 408-417
- ISSN
- 0012-1606 (ISSN-L)
- PMC
- PMC2716409
- OpenAlex
- W2165389148
- Cited by
- 118
- References
- 1
- Citations by year
- 2026: 3 · 2025: 4 · 2024: 6 · 2023: 5 · 2022: 6 · 2021: 10 · 2020: 3 · 2019: 8 · 2018: 9 · 2017: 14 · 2016: 9 · 2015: 4 · 2014: 4 · 2013: 9 · 2012: 9
- FWCI
- 3.32
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- www.elsevier.com/tdm/userlicense/1.0/ (tdm)
- www.elsevier.com/legal/tdmrep-license (tdm)
- www.elsevier.com/open-access/userlicense/1.0/ (vor, 1482 d)
- doi.org/10.15223/policy-017 (stm-asf)
- doi.org/10.15223/policy-037 (stm-asf)
- doi.org/10.15223/policy-012 (stm-asf)
- doi.org/10.15223/policy-029 (stm-asf)
- doi.org/10.15223/policy-004 (stm-asf)
- Locations
- Developmental Biology (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- Washington Research Foundation
- Achievement Rewards for College Scientists Foundation
- Fondation ARC pour la Recherche sur le Cancer
- National Institutes of Health
- National Institute of Neurological Disorders and Stroke (R01NS045246)
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (T32HD007183)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › melanin and skin pigmentation
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Zebrafish Biomedical Research Applications
- Keywords
- FOXD3, MITF, mitfa, neural crest, xanthophores, iridophores, transcriptional repression, melanocyte differentiation, zebrafish, melanoma
- MeSH terms
- Animals, Cells, Cultured, Humans, Melanophores, Neural Crest, Promoter Regions, Genetic, Recombinant Fusion Proteins, Zebrafish, Gene Expression Regulation, Developmental, Zebrafish Proteins, Animals, Genetically Modified, NIH 3T3 Cells, Mice, Microphthalmia-Associated Transcription Factor, Forkhead Transcription Factors
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