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Investigating impacts of mycothiazole and its synthetic derivative on mitochondrial function and aging in C. elegans

ABSTRACT: Investigating impacts of mycothiazole and its synthetic derivative on mitochondrial function and aging in C. elegans

PROVIDER: PRJEB70256 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR12303809_1.fastq.gz	Fastqsanger.gz
	ERR12303809_2.fastq.gz	Fastqsanger.gz
	ERR12303810_1.fastq.gz	Fastqsanger.gz
	ERR12303810_2.fastq.gz	Fastqsanger.gz
	ERR12303811_1.fastq.gz	Fastqsanger.gz

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Investigating impacts of mycothiazole and its synthetic derivative on mitochondrial function and aging in C. elegans

Project description:Small molecule inhibitors of mitochondrial electron transport chain (ETC) hold significant promise in the field of mitochondrial research and aging biology. In this study, we studied two molecules: mycothiazole (MTZ) - isolated from the marine sponge P. mycofijiensis and its semisynthetic acetylated derivative 8-O-acetylmycothiazole (8-OAc) as efficient alternatives for their high efficiency to inhibit ETC complex I function. Similar to rotenone, a widely used complex I inhibitor, these two compounds showed anticancer activity and strikingly demonstrate a lack of toxicity to non-cancer cells, a highly beneficial feature in the development of anti-cancer therapeutics. Furthermore, experiments with these small molecules in vivo utilizing C.elegans demonstrate their additional utilization to aging studies. We observed that both molecules have the ability to induce a mitochondria-specific unfolded protein response (UPRMT) pathway, which extends lifespan of worms when applied in their adult stage. Interestingly, we also found that these two molecules employ different pathways to extend lifespan in worms, where MTZ utilize the transcription factors, ATFS-1 and HSF-1, which are involved in the UPRMT and heat shock response (HSR) pathways, respectively. In opposition,8-OAc only required HSF-1 and not ATFS-1. This observation elucidates an important insight into the functional roles of various protein subunits of ETC complexes and their regulatory mechanisms associated with aging.

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Project description:Small molecule inhibitors of the mitochondrial electron transport chain (ETC) hold significant promise to provide valuable insights to the field of mitochondrial research and aging biology. In this study, we investigated two molecules: mycothiazole (MTZ) - from the marine sponge C. mycofijiensis and its more stable semisynthetic analog 8-O-acetylmycothiazole (8-OAc) as potent and selective chemical probes based on their high efficiency to inhibit ETC complex I function. Similar to rotenone (Rote), MTZ, a newly employed ETC complex I inhibitor, exhibited higher cytotoxicity against cancer cell lines compared to certain non-cancer cell lines. Interestingly, 8-OAc demonstrated greater selectivity for cancer cells when compared to both MTZ and Rote, which has promising potential for anticancer therapeutic development. Furthermore, in vivo experiments with these small molecules utilizing a C. elegans model demonstrate their unexplored potential to investigate aging studies. We observed that both molecules have the ability to induce a mitochondria-specific unfolded protein response (UPRMT) pathway, that extends lifespan of worms when applied in their adult stage. We also found that these two molecules employ different pathways to extend lifespan in worms. Whereas MTZ utilizes the transcription factors ATFS-1 and HSF1, which are involved in the UPRMT and heat shock response (HSR) pathways respectively, 8-OAc only required HSF1 and not ATFS-1 to mediate its effects. This observation underscores the value of applying stable, potent, and selective next generation chemical probes to elucidate an important insight into the functional roles of various protein subunits of ETC complexes and their regulatory mechanisms associated with aging.

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