AP-3 complex subunit delta gene, ap3d1, regulates melanogenesis and melanophore survival via autophagy in zebrafish (Danio rerio).

AP-3 complex subunit delta gene, ap3d1, regulates melanogenesis and melanophore survival via autophagy in zebrafish (Danio rerio).
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DOI:
10.1111/pcmr.13055
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发表时间:
2022-09
影响因子:
4.3
通讯作者:
Cooper, Cynthia D.
Cooper, Cynthia D.
中科院分区:
医学3区
文献类型:
--
作者:
Neuffer, Sam J.;Beltran-Cardona, David;Jimenez-Perez, Kevin;Clancey, Lauren F.;Brown, Alexander;New, Leslie;Cooper, Cynthia D.

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斑马鱼是一种新兴的模式生物,研究综合征白化病疾病,Hermansky-Pudlak综合征(HPS),由于可见的色素发展在受精后24小时,和保守的黑素生成机制。我们描述了crasher,一种新的HPS 10型(HPS 10)斑马鱼模型,在AP-3复合亚基δ基因ap 3d 1中具有突变。ap 3d 1的外显子14在crasher突变体中过表达,而ap 3d 1的表达总体上降低。*AB斑马鱼中的ap 3d 1敲除再现了突变的crasher表型。我们发现ap 3d 1功能缺失突变导致黑素生成基因多巴色素互变异构酶(dct)和酪氨酸酶相关蛋白1b(tyrp 1b)的显著表达变化,但不是酪氨酸酶(tyr)。最后,一般适用的基因集富集(GAGE)分析表明,自噬途径基因在crasher中一起上调。用自噬抑制剂巴弗洛霉素A1治疗,显着减少了crasher中的黑素细胞数量,表明ap 3d 1通过限制过度自噬促进黑素细胞存活。Crasher是研究黑素生成基因表达调控和色素沉着疾病的有价值的模型。
Zebrafish are an emerging model organism to study the syndromic albinism disorder, Hermansky–Pudlak syndrome (HPS), due to visible pigment development at 24 hours postfertilization, and conserved melanogenesis mechanisms. We describe crasher, a novel HPS type 10 (HPS10) zebrafish model, with a mutation in AP‐3 complex subunit delta gene, ap3d1. Exon 14 of ap3d1 is overexpressed in crasher mutants, while the expression of ap3d1 as a whole is reduced. ap3d1 knockout in *AB zebrafish recapitulates the mutant crasher phenotype. We show ap3d1 loss‐of‐function mutations cause significant expression changes in the melanogenesis genes, dopachrome tautomerase (dct) and tyrosinase‐related protein 1b (tyrp1b), but not tyrosinase (tyr). Last, Generally Applicable Gene‐set Enrichment (GAGE) analysis suggests autophagy pathway genes are upregulated together in crasher. Treatment with autophagy‐inhibitor, bafilomycin A1, significantly decreases melanophore number in crasher, suggesting ap3d1 promotes melanophore survival by limiting excessive autophagy. crasher is a valuable model to explore the regulation of melanogenesis gene expression and pigmentation disease.
DOI: 10.1371/journal.pone.0065096
发表时间: 2013-05-27
期刊: PLOS ONE
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