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Karapetyan H, Marutyan S, Muradyan A, Badalyan H, Marutyan SV, Trchounian K. Changes in ATPase activity, antioxidant enzymes and proline biosynthesis in yeast Candida guilliermondii NP-4 under X-irradiation. J Bioenerg Biomembr 2024; 56:141-148. [PMID: 38308068 DOI: 10.1007/s10863-024-10003-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Accepted: 01/24/2024] [Indexed: 02/04/2024]
Abstract
This study investigates the effects of X-radiation on ATPase activity and antioxidant enzyme activity, particularly enzymes involved in proline biosynthesis, in yeast C. guilliermondii NP-4. Moreover, the study examined the post-irradiation repair processes in these cells. Results showed that X-irradiation at a dose of 300 Gy led to an increase in catalase (CAT) and superoxide dismutase (SOD) activity, as well as, an increase in the CAT/SOD ratio in C. guilliermondii NP-4. The repair of radiation-induced damage requires a substantial amount of energy, resulting in an increased demand for ATP in the irradiated and repaired yeasts. Consequently, the total and FoF1-ATPase activity in yeast homogenates and mitochondria increased after X-irradiation and post-irradiation repair. It was showed an increase in the activity of proline biosynthesis enzymes (ornithine transaminase and proline-5-carboxylate reductase) in X-irradiated C. guilliermondii NP-4, which remained elevated even after post-irradiation repair. As a result, the proline levels in X-irradiated and repaired yeasts were higher than those in non-irradiated cells. These findings suggest that proline may have a radioprotective effect on X-irradiated C. guilliermondii NP-4 yeasts. Taken together this study provides insights into the effects of X-radiation on ATPase activity, antioxidant enzyme activity, and proline biosynthesis in C. guilliermondii NP-4 yeast cells, highlighting the potential radioprotective properties of proline in X-irradiated yeasts.
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Affiliation(s)
- Hasmik Karapetyan
- Department of Biochemistry, Microbiology, and Biotechnology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia
- Research Institute of Biology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia
| | - Syuzan Marutyan
- Department of Biochemistry, Microbiology, and Biotechnology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia
- Research Institute of Biology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia
| | - Anna Muradyan
- Department of Biochemistry, Microbiology, and Biotechnology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia
| | - Hamlet Badalyan
- Department of General Physics and Astrophysics, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia
| | - Seda V Marutyan
- Department of Biochemistry, Microbiology, and Biotechnology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia.
| | - Karen Trchounian
- Department of Biochemistry, Microbiology, and Biotechnology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia.
- Research Institute of Biology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia.
- Microbial Biotechnologies and Biofuel Innovation Center, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia.
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Docampo R. Advances in the cellular biology, biochemistry, and molecular biology of acidocalcisomes. Microbiol Mol Biol Rev 2024; 88:e0004223. [PMID: 38099688 PMCID: PMC10966946 DOI: 10.1128/mmbr.00042-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2024] Open
Abstract
SUMMARYAcidocalcisomes are organelles conserved during evolution and closely related to the so-called volutin granules of bacteria and archaea, to the acidocalcisome-like vacuoles of yeasts, and to the lysosome-related organelles of animal species. All these organelles have in common their acidity and high content of polyphosphate and calcium. They are characterized by a variety of functions from storage of phosphorus and calcium to roles in Ca2+ signaling, osmoregulation, blood coagulation, and inflammation. They interact with other organelles through membrane contact sites or by fusion, and have several enzymes, pumps, transporters, and channels.
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Affiliation(s)
- Roberto Docampo
- Department of Cellular Biology, Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, Georgia, USA
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Tomashevsky A, Kulakovskaya E, Trilisenko L, Kulakovskiy IV, Kulakovskaya T, Fedorov A, Eldarov M. VTC4 Polyphosphate Polymerase Knockout Increases Stress Resistance of Saccharomyces cerevisiae Cells. BIOLOGY 2021; 10:487. [PMID: 34070801 PMCID: PMC8227513 DOI: 10.3390/biology10060487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 05/26/2021] [Accepted: 05/27/2021] [Indexed: 11/17/2022]
Abstract
Inorganic polyphosphate (polyP) is an important factor of alkaline, heavy metal, and oxidative stress resistance in microbial cells. In yeast, polyP is synthesized by Vtc4, a subunit of the vacuole transporter chaperone complex. Here, we report reduced but reliably detectable amounts of acid-soluble and acid-insoluble polyPs in the Δvtc4 strain of Saccharomyces cerevisiae, reaching 10% and 20% of the respective levels of the wild-type strain. The Δvtc4 strain has decreased resistance to alkaline stress but, unexpectedly, increased resistance to oxidation and heavy metal excess. We suggest that increased resistance is achieved through elevated expression of DDR2, which is implicated in stress response, and reduced expression of PHO84 encoding a phosphate and divalent metal transporter. The decreased Mg2+-dependent phosphate accumulation in Δvtc4 cells is consistent with reduced expression of PHO84. We discuss a possible role that polyP level plays in cellular signaling of stress response mobilization in yeast.
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Affiliation(s)
- Alexander Tomashevsky
- Federal Scientific Center, Pushchino Research Center for Biology of the Russian Academy of Sciences, Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr. Nauki 5, 142290 Pushchino, Russia; (A.T.); (E.K.); (L.T.)
| | - Ekaterina Kulakovskaya
- Federal Scientific Center, Pushchino Research Center for Biology of the Russian Academy of Sciences, Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr. Nauki 5, 142290 Pushchino, Russia; (A.T.); (E.K.); (L.T.)
| | - Ludmila Trilisenko
- Federal Scientific Center, Pushchino Research Center for Biology of the Russian Academy of Sciences, Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr. Nauki 5, 142290 Pushchino, Russia; (A.T.); (E.K.); (L.T.)
| | - Ivan V. Kulakovskiy
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia;
- Vavilov Institute of General Genetics, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Tatiana Kulakovskaya
- Federal Scientific Center, Pushchino Research Center for Biology of the Russian Academy of Sciences, Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr. Nauki 5, 142290 Pushchino, Russia; (A.T.); (E.K.); (L.T.)
| | - Alexey Fedorov
- Federal Scientific Center for Biotechnology of the Russian Academy of Sciences, Institute of Bioengineering, Russian Academy of Sciences, Leninsky prosp. 33-2, 119071 Moscow, Russia; (A.F.); (M.E.)
| | - Mikhail Eldarov
- Federal Scientific Center for Biotechnology of the Russian Academy of Sciences, Institute of Bioengineering, Russian Academy of Sciences, Leninsky prosp. 33-2, 119071 Moscow, Russia; (A.F.); (M.E.)
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Marutyan S, Marutyan S, Navasardyan L, Hovnanyan K, Trchounian A. Changes in growth kinetic parameters, morphology and mitotic activity of yeasts Candida guilliermondii exposed to the low-intensity waves of 51.8-GHz frequency. Arch Microbiol 2021; 203:3707-3714. [PMID: 33938972 DOI: 10.1007/s00203-021-02336-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 04/03/2021] [Accepted: 04/16/2021] [Indexed: 11/27/2022]
Abstract
Under the influence of electromagnetic waves of millimeter range with the frequency of 51.8 GHz, changes in the morphology, growth parameters and mitotic activity of yeasts C. guilliermondii NP-4 are revealed. Filamentous and giant cells appeared in a population of exposed yeasts. The sigmoid shape of the growth curve remained but the lag phase duration was increased by 2 h in comparison with non-exposed yeasts; accordingly, the log and stationary phases followed 2 h later. The specific growth rate in the log growth phase and colony-forming ability of exposed yeasts was decreased. It is suggested that yeasts have some response mechanisms to 51.8-GHz frequency electromagnetic waves. The results can be used to understand the response mechanisms of microorganisms to non-ionizing radiation, as well as to develop approaches to protect living organisms from it. The effect of electromagnetic waves of 51.8-GHz frequency to suppress yeasts can be applied in biotechnology and medicine.
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Affiliation(s)
- Seda Marutyan
- Department of Biochemistry, Microbiology and Biotechnology, Yerevan State University, 1 A. Manoogyan Str, 0025, Yerevan, Armenia
| | - Syuzan Marutyan
- Department of Biochemistry, Microbiology and Biotechnology, Yerevan State University, 1 A. Manoogyan Str, 0025, Yerevan, Armenia
| | - Liparit Navasardyan
- Department of Biochemistry, Microbiology and Biotechnology, Yerevan State University, 1 A. Manoogyan Str, 0025, Yerevan, Armenia
| | - Karlen Hovnanyan
- Scientific and Technological Center of Organic and Pharmaceutical Chemistry, National Academy of Sciences of RA, 26 Azatutyan Str, 0014, Yerevan, Armenia
| | - Armen Trchounian
- Department of Biochemistry, Microbiology and Biotechnology, Yerevan State University, 1 A. Manoogyan Str, 0025, Yerevan, Armenia.
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