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Barba‐Aliaga M, Alepuz P. The activator/repressor Hap1 binds to the yeast eIF5A‐encoding gene
TIF51A
to adapt its expression to the mitochondrial functional status. FEBS Lett 2022; 596:1809-1826. [DOI: 10.1002/1873-3468.14366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/12/2022] [Accepted: 04/22/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Marina Barba‐Aliaga
- Instituto de Biotecnología y Biomedicina (Biotecmed) Universitat de València 46100 València Spain
- Departamento de Bioquímica y Biología Molecular Facultad de Ciencias Biológicas Universitat de València 46100 València Spain
| | - Paula Alepuz
- Instituto de Biotecnología y Biomedicina (Biotecmed) Universitat de València 46100 València Spain
- Departamento de Bioquímica y Biología Molecular Facultad de Ciencias Biológicas Universitat de València 46100 València Spain
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Nan Y, Lin J, Cui Y, Yao J, Yang Y, Li Q. Protective role of vitamin B6 against mitochondria damage in Drosophila models of SCA3. Neurochem Int 2021; 144:104979. [PMID: 33535071 DOI: 10.1016/j.neuint.2021.104979] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/25/2021] [Accepted: 01/26/2021] [Indexed: 11/15/2022]
Abstract
Polyglutamine (polyQ)-mediated mitochondria damage is one of the prime causes of polyQ toxicity, which leads to the loss of neurons and the injury of non-neuronal cells. With the discovery of the crucial role of the gut-brain axis and gut microbes in neurological diseases, the relationship between visceral damage and neurological disorders has also received extensive attention. This study successfully simulated the polyQ mitochondrial damage model by expressing 78 or 84 polyglutamine-containing Ataxin3 proteins in Drosophila intestinal enterocytes. In vivo, polyQ expression can reduce mitochondrial membrane potential, mitochondrial DNA damage, abnormal mitochondrial morphology, and loose mitochondrial cristae. Expression profiles evaluated by RNA-seq showed that mitochondrial structural genes and functional genes (oxidative phosphorylation and tricarboxylic acid cycle-related) were significantly down-regulated. More importantly, Bioinformatic analyses demonstrated that pathological polyQ expression induced vitamin B6 metabolic pathways abnormality. Active vitamin B6 participates in hundreds of enzymatic reactions and is very important for maintaining mitochondria's activities. In the SCA3 Drosophila model, Vitamin B6 supplementation significantly suppressed ECs mitochondria damage in guts and inhibited cellular polyQ aggregates in fat bodies, indicating a promising therapeutic strategy for the treatment of polyQ. Taken together, our results reveal a crucial role for the Vitamin B6-mediated mitochondrial protection in polyQ-induced cellular toxicity, which provides strong evidence for this process as a drug target in polyQ diseases treatment.
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Affiliation(s)
- Yuyu Nan
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, 410000, China
| | - Jingjing Lin
- Institute of Life Sciences, Fuzhou University, Fuzhou, Fujian Province, 350108, China
| | - Ying Cui
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, 410000, China
| | - Jinpeng Yao
- Department of Emergency, Zhongshan Hospital, Xiamen University, Xiamen, 361001, China
| | - Yufeng Yang
- Institute of Life Sciences, Fuzhou University, Fuzhou, Fujian Province, 350108, China.
| | - Qinghua Li
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, 410000, China; Guangxi Clinical Research Center for Neurological Diseases, Guilin, Guangxi, 541001, China; Department of Neurology, The Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, 541001, China; Guangxi Key Laboratory of Brain and Cognitive Neuroscience, Guilin, Guangxi, 541004, China.
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Bredeweg EL, Pomraning KR, Dai Z, Nielsen J, Kerkhoven EJ, Baker SE. A molecular genetic toolbox for Yarrowia lipolytica. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:2. [PMID: 28066508 PMCID: PMC5210315 DOI: 10.1186/s13068-016-0687-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 12/13/2016] [Indexed: 05/29/2023]
Abstract
BACKGROUND Yarrowia lipolytica is an ascomycete yeast used in biotechnological research for its abilities to secrete high concentrations of proteins and accumulate lipids. Genetic tools have been made in a variety of backgrounds with varying similarity to a comprehensively sequenced strain. RESULTS We have developed a set of genetic and molecular tools in order to expand capabilities of Y. lipolytica for both biological research and industrial bioengineering applications. In this work, we generated a set of isogenic auxotrophic strains with decreased non-homologous end joining for targeted DNA incorporation. Genome sequencing, assembly, and annotation of this genetic background uncovers previously unidentified genes in Y. lipolytica. To complement these strains, we constructed plasmids with Y. lipolytica-optimized superfolder GFP for targeted overexpression and fluorescent tagging. We used these tools to build the "Yarrowia lipolytica Cell Atlas," a collection of strains with endogenous fluorescently tagged organelles in the same genetic background, in order to define organelle morphology in live cells. CONCLUSIONS These molecular and isogenetic tools are useful for live assessment of organelle-specific protein expression, and for localization of lipid biosynthetic enzymes or other proteins in Y. lipolytica. This work provides the Yarrowia community with tools for cell biology and metabolism research in Y. lipolytica for further development of biofuels and natural products.
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Affiliation(s)
- Erin L. Bredeweg
- Earth and Biological Sciences Directorate, Environmental Molecular Sciences Laboratory, Richland, WA 99354 USA
- Department of Energy, Battelle EMSL, 3335 Innovation Blvd, Richland, WA 99354 USA
| | - Kyle R. Pomraning
- Chemical & Biological Process Development Group, Energy and Environment Directorate, Pacific Northwest National Laboratories, Richland, WA 99354 USA
| | - Ziyu Dai
- Chemical & Biological Process Development Group, Energy and Environment Directorate, Pacific Northwest National Laboratories, Richland, WA 99354 USA
| | - Jens Nielsen
- Systems and Synthetic Biology, Department of Biology and Biological Engineering, Chalmers University of Technology, Göteborg, Sweden
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Hørsholm, Denmark
| | - Eduard J. Kerkhoven
- Systems and Synthetic Biology, Department of Biology and Biological Engineering, Chalmers University of Technology, Göteborg, Sweden
| | - Scott E. Baker
- Earth and Biological Sciences Directorate, Environmental Molecular Sciences Laboratory, Richland, WA 99354 USA
- Department of Energy, Battelle EMSL, 3335 Innovation Blvd, Richland, WA 99354 USA
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