消耗脂质储存液滴-1可延缓果蝇唾液腺的内再复制进程并诱导细胞死亡。

IF 1.5 4区 农林科学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY Archives of Insect Biochemistry and Physiology Pub Date : 2024-07-11 DOI:10.1002/arch.22132
Yen D. H. Nguyen, Tuan L. A. Pham, Taisei Nishihara, Kaeko Kamei, Duy Binh Tran
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引用次数: 0

摘要

从昆虫到哺乳动物,围脂蛋白在进化过程中都是保守的。果蝇脂质储存液滴-1(LSD-1)是一种脂质储存液滴膜表面结合蛋白家族成员,也是哺乳动物周脂素 1 的对应物,已知在脂肪分解中发挥作用。然而,LSD-1在特定组织发育过程中的功能仍有待研究。本研究证明了LSD-1在唾液腺发育中的作用。利用GAL4/UAS系统在唾液腺中敲除Lsd-1。基因敲除果蝇的三龄幼虫唾液腺较小,细胞核较小。无效突变果蝇也表现出相同的表型。由于 CycE 表达减少和 DNA 损伤增加,LSD-1 的表达减少导致内再复制延迟。在三龄幼虫中,Lsd-1与Myc存在基因相互作用。这些结果表明,LSD-1参与了唾液腺的细胞周期和细胞死亡程序,为研究LSD-1在调节唾液腺发育中的作用以及LSD-1与Myc之间的相互作用提供了新的视角。
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Depletion of lipid storage droplet-1 delays endoreplication progression and induces cell death in Drosophila salivary gland

Perilipins are evolutionarily conserved from insects to mammals. Drosophila lipid storage droplet-1 (LSD-1) is a lipid storage droplet membrane surface-binding protein family member and a counterpart to mammalian perilipin 1 and is known to play a role in lipolysis. However, the function of LSD-1 during specific tissue development remains under investigation. This study demonstrated the role of LSD-1 in salivary gland development. Knockdown of Lsd-1 in the salivary gland was established using the GAL4/UAS system. The third-instar larvae of knockdown flies had small salivary glands containing cells with smaller nuclei. The null mutant Drosophila also showed the same phenotype. The depletion of LSD-1 expression induced a delay of endoreplication due to decreasing CycE expression and increasing DNA damage. Lsd-1 genetically interacted with Myc in the third-instar larvae. These results demonstrate that LSD-1 is involved in cell cycle and cell death programs in the salivary gland, providing novel insight into the effects of LSD-1 in regulating salivary gland development and the interaction between LSD-1 and Myc.

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来源期刊
CiteScore
4.30
自引率
4.50%
发文量
115
审稿时长
12 months
期刊介绍: Archives of Insect Biochemistry and Physiology is an international journal that publishes articles in English that are of interest to insect biochemists and physiologists. Generally these articles will be in, or related to, one of the following subject areas: Behavior, Bioinformatics, Carbohydrates, Cell Line Development, Cell Signalling, Development, Drug Discovery, Endocrinology, Enzymes, Lipids, Molecular Biology, Neurobiology, Nucleic Acids, Nutrition, Peptides, Pharmacology, Pollinators, Proteins, Toxicology. Archives will publish only original articles. Articles that are confirmatory in nature or deal with analytical methods previously described will not be accepted.
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