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Jiang L, Li Y, Gu Y, Zheng J, Wei L, Wei M, Zou J, Wei C, Mo B, Pan L, Zhao L, Wang D. Identification of the Beta Subunit Fas1p of Fatty Acid Synthetase as an Interacting Partner of Yeast Calcium/Calmodulin-Dependent Protein Kinase Cmk2p Through Mass Spectrometry Analysis. Appl Biochem Biotechnol 2024:10.1007/s12010-024-04891-w. [PMID: 38411936 DOI: 10.1007/s12010-024-04891-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/12/2024] [Indexed: 02/28/2024]
Abstract
The calcium/calmodulin-dependent protein kinase II (CaMKII) is a mediator of calcium signals and regulates fatty acid metabolism in mammalian cells. Cmk2p is a yeast homolog of CaMKII and functions as a negative regulator of calcium signaling. However, its substrates remain to be identified. Combination of immunoprecipitation (IP) and mass spectrometry has been proven to be very useful for identification of interacting partner proteins and interactome. In this study, through these approaches, we have identified 65 and 110 potential Cmk2p-interacting proteins in yeast cells in the absence or presence of calcium stress, respectively. In yeast cells expressing both CMK2-HA and FAS1-GFP fusion proteins, in the absence or presence of calcium stress, less amounts of FAS1-GFP proteins are present in cell lysates after IP with anti-HA antibody than cell lysates before IP, while FAS1-GFP proteins are detected on both types of IP beads. However, as an internal control, similar amounts of Pgk1p proteins were detected in both after-IP and before-IP cell lysates but not on the IP beads. Therefore, our biochemical analysis demonstrates that the β subunit Fas1p of fatty acid synthetase interacts with Cmk2p in yeast cells independent of calcium stress. It is also interesting to note that, in addition to the expected 52-kDa CMK2-HA band, a faster-moving 48-kDa CMK2-HA band is present in the calcium-stressed cell lysate but not in the cell lysate without calcium stress. Our data would provide important clues for understanding the functions of CaMKII in the regulation of fatty acid metabolism as well as related diseases such as cancers, diabetes, and obesity.
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Affiliation(s)
- Linghuo Jiang
- Laboratory of Yeast Biology and Fermentation Technology, National Engineering Research Center for Non-Food Biorefinery, National Key Laboratory of Non-Food Biomass Energy Technology, Guangxi Biomass Engineering Technology Research Center, Institute of Biological Sciences and Technology, Guangxi Academy of Sciences, Nanning, 530007, Guangxi, China.
| | - Yiwu Li
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, 530001, China
| | - Yiying Gu
- Laboratory of Yeast Biology and Fermentation Technology, National Engineering Research Center for Non-Food Biorefinery, National Key Laboratory of Non-Food Biomass Energy Technology, Guangxi Biomass Engineering Technology Research Center, Institute of Biological Sciences and Technology, Guangxi Academy of Sciences, Nanning, 530007, Guangxi, China
| | - Jiashi Zheng
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, 530001, China
| | - Liudan Wei
- Laboratory of Yeast Biology and Fermentation Technology, National Engineering Research Center for Non-Food Biorefinery, National Key Laboratory of Non-Food Biomass Energy Technology, Guangxi Biomass Engineering Technology Research Center, Institute of Biological Sciences and Technology, Guangxi Academy of Sciences, Nanning, 530007, Guangxi, China
| | - Min Wei
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, 530001, China
| | - Jie Zou
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, 530001, China
| | - Chunyu Wei
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, 530001, China
| | - Bei Mo
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, 530001, China
| | - Lingxin Pan
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, 530001, China
| | - Lijiao Zhao
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, 530001, China
| | - Dan Wang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, 530001, China
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2
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Jiang L, Xu H, Wei M, Gu Y, Yan H, Pan L, Wei C. Transcriptional expression of PHR2 is positively controlled by the calcium signaling transcription factor Crz1 through its binding motif in the promoter. Microbiol Spectr 2024; 12:e0168923. [PMID: 38054721 PMCID: PMC10783099 DOI: 10.1128/spectrum.01689-23] [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] [Received: 04/22/2023] [Accepted: 11/06/2023] [Indexed: 12/07/2023] Open
Abstract
IMPORTANCE The fungal cell wall consists of glucans, mannoproteins, and chitin and is essential for cell viability, morphogenesis, and pathogenesis. The enzymes of the GH72 family are responsible for ß-(1,3)-glucan elongation and branching, which is crucial for the formation of the glucan-chitin polymer at the bud neck of yeast cells. In the human fungal pathogen Candida albicans, there are five GH72 enzyme-encoding genes: PHR1, PHR2, PHR3, PGA4, and PGA5. It is known that expression of PHR1 and PHR2 is controlled by the pH-responsive Rim101 pathway through the transcription factor Rim101. In this study, we have demonstrated that the transcription expression of PHR2 is also controlled by the transcription factor Crz1 through its binding motif in the promoter. Therefore, we have uncovered a dual-control mechanism by which PHR2 expression is negatively regulated via CaRim101 through the pH-responsive pathway and positively modulated by CaCrz1 through the calcium/calcineurin signaling pathway.
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Affiliation(s)
- Linghuo Jiang
- Laboratory of Yeast Biology and Fermentation Technology, Institute of Biological Sciences and Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Huihui Xu
- Department of Food Science, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
| | - Min Wei
- Laboratory of Yeast Biology and Fermentation Technology, Institute of Biological Sciences and Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Yiying Gu
- Laboratory of Yeast Biology and Fermentation Technology, Institute of Biological Sciences and Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Hongbo Yan
- Department of Food Science, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
| | - Lingxin Pan
- Laboratory of Yeast Biology and Fermentation Technology, Institute of Biological Sciences and Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Chunyu Wei
- Laboratory of Yeast Biology and Fermentation Technology, Institute of Biological Sciences and Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
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3
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Zhang W, Yao Z, Guo R, Cao J, Li W, Hao C, Zhang X. Identification of novel homozygous nonsense SLC10A7 variant causing short stature, amelogenesis imperfecta, and skeletal dysplasia with scoliosis and surgical management of spine. Orphanet J Rare Dis 2023; 18:371. [PMID: 38037133 PMCID: PMC10691085 DOI: 10.1186/s13023-023-02975-0] [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: 12/13/2022] [Accepted: 11/18/2023] [Indexed: 12/02/2023] Open
Abstract
BACKGROUND Short stature, amelogenesis imperfecta, and skeletal dysplasia with scoliosis is a rare, autosomal recessive, skeletal disorder first described in 2018. This syndrome starts with pre- and postnatal developmental delay, and gradually presents with variable facial dysmorphisms, a short stature, amelogenesis imperfecta, and progressive skeletal dysplasia affecting the limbs, joints, hands, feet, and spine. CASE PRESENTATION We identified a homozygous novel nonsense mutation in exon 1 of SLC10A7 (NM_001300842.2: c.100G > T / p.Gly34*) segregating with the typical disease phenotype in a Han Chinese family. We reviewed the 12-year surgical treatment history with seven interventions on spine. CONCLUSION To date, only 12 cases of the SLC10A7 mutation have been reported, mainly from consanguineous families. Our patient showed a relatively severe and broad clinical phenotype compared with previously reported cases. In this patient, annual check-ups and timely surgeries led to a good outcome.
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Affiliation(s)
- Wenyan Zhang
- Beijing Key Laboratory for Genetics of Birth Defects, MOE Key Laboratory of Major Diseases in Children, Beijing Children's Hospital, Beijing Pediatric Research Institute, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Ziming Yao
- Department of Orthopedics, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Ruolan Guo
- Beijing Key Laboratory for Genetics of Birth Defects, MOE Key Laboratory of Major Diseases in Children, Beijing Children's Hospital, Beijing Pediatric Research Institute, Capital Medical University, National Center for Children's Health, Beijing, China
- Henan Key Laboratory of Pediatric Inherited & Metabolic Diseases, Henan Children's Hospital, Zhengzhou Hospital of Beijing Children's Hospital, Zhengzhou, China
| | - Jun Cao
- Department of Orthopedics, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Wei Li
- Beijing Key Laboratory for Genetics of Birth Defects, MOE Key Laboratory of Major Diseases in Children, Beijing Children's Hospital, Beijing Pediatric Research Institute, Capital Medical University, National Center for Children's Health, Beijing, China
- Henan Key Laboratory of Pediatric Inherited & Metabolic Diseases, Henan Children's Hospital, Zhengzhou Hospital of Beijing Children's Hospital, Zhengzhou, China
| | - Chanjuan Hao
- Beijing Key Laboratory for Genetics of Birth Defects, MOE Key Laboratory of Major Diseases in Children, Beijing Children's Hospital, Beijing Pediatric Research Institute, Capital Medical University, National Center for Children's Health, Beijing, China.
- Henan Key Laboratory of Pediatric Inherited & Metabolic Diseases, Henan Children's Hospital, Zhengzhou Hospital of Beijing Children's Hospital, Zhengzhou, China.
| | - Xuejun Zhang
- Department of Orthopedics, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.
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4
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Jiang L, Xu H, Gu Y, Wei L. A glycosylated Phr1 protein is induced by calcium stress and its expression is positively controlled by the calcium/calcineurin signaling transcription factor Crz1 in Candida albicans. Cell Commun Signal 2023; 21:237. [PMID: 37723578 PMCID: PMC10506259 DOI: 10.1186/s12964-023-01224-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 07/12/2023] [Indexed: 09/20/2023] Open
Abstract
As one of the most important human fungal pathogens, Candida albicans senses and adapts to host niches with different pH values through the pH-responsive Rim101 pathway. Its transcription factor Rim101 activates the expression of alkaline pH-induced genes including PHR1 that encodes a glycosylphosphatidylinsitol-anchored β(1,3)-glucanosyltransferase critical for hyphal wall formation. The calcium/calcineurin signaling pathway is mediated by the transcription factor Crz1 in yeasts and other lower eukaryotes. Here we report that deletion of PHR1 leads to calcium sensitivity of C. albicans cells. In addition, expression of Phr1 is induced by calcium stress and under the control of Crz1 in C. albicans. EMSA assay demonstrates that Crz1 binds to one CDRE element in the PHR1 promoter. Alkaline treatment induces two species of glycosylated Phr1 proteins with different degrees of glycosylation, which is independent of Crz1. In contrast, only one species of Phr1 protein with a low degree of glycosylation is induced by calcium stress in a Crz1-dependent fashion. Therefore, we have provided an evidence that regulation of cell wall remodeling is integrated through differential degrees of Phr1 glycosylation by both the pH-regulated Rim101 pathway and the calcium/calcineurin signaling pathway in C. albicans. Video Abstract.
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Affiliation(s)
- Linghuo Jiang
- Laboratory of Yeast Biology and Fermentation Technology, Institute of Biological Sciences and Technology, Guangxi Academy of Sciences, Nanning, 530007, Guangxi, China.
| | - Huihui Xu
- Department of Food Science, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, 255000, China
| | - Yiying Gu
- Laboratory of Yeast Biology and Fermentation Technology, Institute of Biological Sciences and Technology, Guangxi Academy of Sciences, Nanning, 530007, Guangxi, China
| | - Liudan Wei
- Laboratory of Yeast Biology and Fermentation Technology, Institute of Biological Sciences and Technology, Guangxi Academy of Sciences, Nanning, 530007, Guangxi, China
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5
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Zhao Y, Zuo F, Shu Q, Yang X, Deng Y. Efficient Production of Glucaric Acid by Engineered Saccharomyces cerevisiae. Appl Environ Microbiol 2023; 89:e0053523. [PMID: 37212714 PMCID: PMC10304745 DOI: 10.1128/aem.00535-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 04/19/2023] [Indexed: 05/23/2023] Open
Abstract
Glucaric acid is a valuable chemical with applications in the detergent, polymer, pharmaceutical and food industries. In this study, two key enzymes for glucaric acid biosynthesis, MIOX4 (myo-inositol oxygenase) and Udh (uronate dehydrogenase), were fused and expressed with different peptide linkers. It was found that a strain harboring the fusion protein MIOX4-Udh linked by the peptide (EA3K)3 produced the highest glucaric acid titer and thereby resulted in glucaric acid production that was 5.7-fold higher than that of the free enzymes. Next, the fusion protein MIOX4-Udh linked by (EA3K)3 was integrated into delta sequence sites of the Saccharomyces cerevisiae opi1 mutant, and a strain, GA16, that produced a glucaric acid titer of 4.9 g/L in a shake flask fermentation was identified by a high-throughput screening method using an Escherichia coli glucaric acid biosensor. Strain improvement by further engineering was performed to regulate the metabolic flux of myo-inositol to increase the supply of glucaric acid precursors. The downregulation of ZWF1 and the overexpression of INM1 and ITR1 increased glucaric acid production significantly, and glucaric acid production was increased to 8.49 g/L in the final strain GA-ZII in a shake flask fermentation. Finally, in a 5-L bioreactor, GA-ZII produced a glucaric acid titer of 15.6 g/L through fed-batch fermentation. IMPORTANCE Glucaric acid is a value-added dicarboxylic acid that was synthesized mainly through the oxidation of glucose chemically. Due to the problems of the low selectivity, by-products, and highly polluting waste of this process, producing glucaric acid biologically has attracted great attention. The activity of key enzymes and the intracellular myo-inositol level were both rate-limiting factors for glucaric acid biosynthesis. To increase glucaric acid production, this work improved the activity of the key enzymes in the glucaric acid biosynthetic pathway through the expression of a fusion of Arabidopsis thaliana MIOX4 and Pseudomonas syringae Udh as well as a delta sequence-based integration. Furthermore, intracellular myo-inositol flux was optimized by a series of metabolic strategies to increase the myo-inositol supply, which improved glucaric acid production to a higher level. This study provided a way for constructing a glucaric acid-producing strain with good synthetic performance, making glucaric acid production biologically in yeast cells much more competitive.
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Affiliation(s)
- Yunying Zhao
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, Jiangsu, China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Fangyu Zuo
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, Jiangsu, China
| | - Quanxian Shu
- Shandong Provincial Key Laboratory of Fat and Oil Deep-Processing, Shandong Bohi Industry Co., Ltd., Binzhou, Shandong, China
| | - Xiaoyan Yang
- Shandong Provincial Key Laboratory of Fat and Oil Deep-Processing, Shandong Bohi Industry Co., Ltd., Binzhou, Shandong, China
| | - Yu Deng
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, Jiangsu, China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, Jiangsu, China
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Coleman CE, Landin C, Neuer A, Sayegh FM, Marshall PA. Calmodulin kinase 2 genetically interacts with Rch1p to negatively regulate calcium import into Saccharomyces cerevisiae after extracellular calcium pulse. Arch Microbiol 2022; 204:519. [DOI: 10.1007/s00203-022-03095-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 01/18/2023]
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Li S, Ma L, Fu W, Su R, Zhao Y, Deng Y. Programmable Synthetic Upstream Activating Sequence Library for Fine-Tuning Gene Expression Levels in Saccharomyces cerevisiae. ACS Synth Biol 2022; 11:1228-1239. [PMID: 35195994 DOI: 10.1021/acssynbio.1c00511] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A wide dynamic range of promoters is necessary for fine-tuning transcription levels. However, weak intensity and narrow dynamic range limit transcriptional regulation via constitutive promoters. The upstream activation sequence (UAS) located upstream of the core promoter is a crucial region that could obviously enhance promoter strength. Herein, we created a random mutagenesis library consisting of 330 different variants based on the UAS of the TDH3 promoter with an ∼37-fold dynamic range by error-prone polymerase chain reaction (PCR) and obtained strong intensity mutant UAS, which was ∼12-fold greater than the wild-type UASTDH3. Analysis of the mutant library revealed 15 strength-enhancing sites and their corresponding bases of the UASTDH3 regions, which provided the impetus for a synthetic library. The resulting 32 768 mutant UAS library was constructed by permutation and combination of the bases of the 15 enhancing sites. To characterize the library, a strength prediction model was built by correlating DNA structural features and UAS strength, which provided a model between UAS sequence and intensity. Following characterization, the UAS library was applied to precisely regulate gene expression in the production of β-carotene, proving that the UAS library would be a useful tool for gene tuning in metabolic engineering. In summary, we designed, constructed, and characterized a UAS library that facilitated precise tuning of transcription levels of target proteins.
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Affiliation(s)
- Shiyun Li
- National Engineering Laboratory for Cereal Fermentation Technology (NELCF), Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Lizhou Ma
- National Engineering Laboratory for Cereal Fermentation Technology (NELCF), Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Wenxuan Fu
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Ruifang Su
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Yunying Zhao
- National Engineering Laboratory for Cereal Fermentation Technology (NELCF), Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Yu Deng
- National Engineering Laboratory for Cereal Fermentation Technology (NELCF), Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
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SLC10A7, an orphan member of the SLC10 family involved in congenital disorders of glycosylation. Hum Genet 2022; 141:1287-1298. [PMID: 34999954 DOI: 10.1007/s00439-021-02420-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 12/14/2021] [Indexed: 12/26/2022]
Abstract
SLC10A7, encoded by the so-called SLC10A7 gene, is the seventh member of a human sodium/bile acid cotransporter family, known as the SLC10 family. Despite similarities with the other members of the SLC10 family, SLC10A7 does not exhibit any transport activity for the typical SLC10 substrates and is then considered yet as an orphan carrier. Recently, SLC10A7 mutations have been identified as responsible for a new Congenital Disorder of Glycosylation (CDG). CDG are a family of rare and inherited metabolic disorders, where glycosylation abnormalities lead to multisystemic defects. SLC10A7-CDG patients presented skeletal dysplasia with multiple large joint dislocations, short stature and amelogenesis imperfecta likely mediated by glycosaminoglycan (GAG) defects. Although it has been demonstrated that the transporter and substrate specificities of SLC10A7, if any, differ from those of the main members of the protein family, SLC10A7 seems to play a role in Ca2+ regulation and is involved in proper glycosaminoglycan biosynthesis, especially heparan-sulfate, and N-glycosylation. This paper will review our current knowledge on the known and predicted structural and functional properties of this fascinating protein, and its link with the glycosylation process.
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9
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Li G, Fu W, Deng Y, Zhao Y. Role of Calcium/Calcineurin Signalling in Regulating Intracellular Reactive Oxygen Species Homeostasis in Saccharomyces cerevisiae. Genes (Basel) 2021; 12:genes12091311. [PMID: 34573294 PMCID: PMC8466207 DOI: 10.3390/genes12091311] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/19/2021] [Accepted: 08/22/2021] [Indexed: 01/14/2023] Open
Abstract
The calcium/calcineurin signalling pathway is required for cell survival under various environmental stresses. Using Saccharomyces cerevisiae, we explored the mechanism underlying calcium-regulated homeostasis of intracellular reactive oxygen species (ROS). We found that deletion of acyltransferase Akr1 and C-5 sterol desaturase Erg3 increased the intracellular ROS levels and cell death, and this could be inhibited by the addition of calcium. The hexose transporter Hxt1 and the amino acid permease Agp1 play crucial roles in maintaining intracellular ROS levels, and calcium induced the expression of the HXT1 and AGP1 genes. The cytosolic calcium concentration was decreased in both the akr1Δ and erg3Δ mutants relative to wild-type cells, potentially lowering basal expression of HXT1 and AGP1. Moreover, the calcium/calcineurin signalling pathway also induced the expression of AKR1 and ERG3, indicating that Akr1 and Erg3 might perform functions that help yeast cells to survive under high calcium concentrations. Our results provided mechanistic insight into how calcium regulated intracellular ROS levels in yeast.
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Affiliation(s)
- Guohui Li
- National Engineering Laboratory for Cereal Fermentation Technology (NELCF), School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (G.L.); (Y.D.)
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Wenxuan Fu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China;
| | - Yu Deng
- National Engineering Laboratory for Cereal Fermentation Technology (NELCF), School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (G.L.); (Y.D.)
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Yunying Zhao
- National Engineering Laboratory for Cereal Fermentation Technology (NELCF), School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (G.L.); (Y.D.)
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China;
- Correspondence:
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Zimmermannova O, Felcmanova K, Sacka L, Colinet AS, Morsomme P, Sychrova H. K+-specific importers Trk1 and Trk2 play different roles in Ca2+ homeostasis and signalling in Saccharomyces cerevisiae cells. FEMS Yeast Res 2021; 21:6152291. [PMID: 33640956 DOI: 10.1093/femsyr/foab015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 02/24/2021] [Indexed: 01/06/2023] Open
Abstract
The maintenance of K+ and Ca2+ homeostasis is crucial for many cellular functions. Potassium is accumulated in cells at high concentrations, while the cytosolic level of calcium, to ensure its signalling function, is kept at low levels and transiently increases in response to stresses. We examined Ca2+ homeostasis and Ca2+ signalling in Saccharomyces cerevisiae strains lacking plasma-membrane K+ influx (Trk1 and Trk2) or efflux (Tok1, Nha1 and Ena1-5) systems. The lack of K+ exporters slightly increased the cytosolic Ca2+, but did not alter the Ca2+ tolerance or Ca2+-stress response. In contrast, the K+-importers Trk1 and Trk2 play important and distinct roles in the maintenance of Ca2+ homeostasis. The presence of Trk1 was vital mainly for the growth of cells in the presence of high extracellular Ca2+, whilst the lack of Trk2 doubled steady-state intracellular Ca2+ levels. The absence of both K+ importers highly increased the Ca2+ response to osmotic or CaCl2 stresses and altered the balance between Ca2+ flux from external media and intracellular compartments. In addition, we found Trk2 to be important for the tolerance to high KCl and hygromycin B in cells growing on minimal media. All the data describe new interconnections between potassium and calcium homeostasis in S. cerevisiae.
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Affiliation(s)
- Olga Zimmermannova
- Laboratory of Membrane Transport, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, Prague 4 - Krc, 142 20, Czech Republic
| | - Kristina Felcmanova
- Laboratory of Membrane Transport, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, Prague 4 - Krc, 142 20, Czech Republic
| | - Lenka Sacka
- Laboratory of Membrane Transport, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, Prague 4 - Krc, 142 20, Czech Republic
| | - Anne-Sophie Colinet
- Louvain Institute of Biomolecular Science and Technology, Université catholique de Louvain, B 1348, Louvain-la-Neuve, Belgium
| | - Pierre Morsomme
- Louvain Institute of Biomolecular Science and Technology, Université catholique de Louvain, B 1348, Louvain-la-Neuve, Belgium
| | - Hana Sychrova
- Laboratory of Membrane Transport, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, Prague 4 - Krc, 142 20, Czech Republic
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The pH-sensing Rim101 pathway positively regulates the transcriptional expression of the calcium pump gene PMR1 to affect calcium sensitivity in budding yeast. Biochem Biophys Res Commun 2020; 532:453-458. [PMID: 32891431 DOI: 10.1016/j.bbrc.2020.08.083] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 08/22/2020] [Indexed: 11/20/2022]
Abstract
In Saccharomyces cerevisiae, the Rim101 pathway senses extracellular pH changes through a complex consisted of Rim8, Rim9 and Rim21 at the plasma membrane. Activation of this sensor complex induces a proteolytical complex composed of Rim13 and Rim20 and leads to the C-terminal processing and activation of the transcription factor Rim101. Deletion mutants for RIM8, RIM9, RIM13, RIM20, RIM21 and RIM101 causes yeast cells to be sensitive to calcium stress, but how they regulate calcium sensitivity remain unknown. Here we show that deletion mutations of these six Rim101 pathway components elevate the activation level of the calcium/calcineurin signaling and the transcriptional expression level of the vacuolar calcium pump gene PMC1, but lead to a reduction in transcriptional expression level of the ER/Golgi calcium pump gene PMR1 in yeast cells. Deletion of NRG1, encoding one of the repression targets of Rim101, rescues the transcriptional expression of PMR1 in all these mutants. Furthermore, ectopic expression of a constitutively active form of Rim101 or further deletion of NRG1 suppresses the calcium sensitivity of these six deletion mutants. Therefore, the pH-sensing Rim101 pathway positively regulates the transcriptional expression of PMR through its downstream target Nrg1 to affect the calcium sensitivity of yeast cells.
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12
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The orphan solute carrier SLC10A7 is a novel negative regulator of intracellular calcium signaling. Sci Rep 2020; 10:7248. [PMID: 32350310 PMCID: PMC7190670 DOI: 10.1038/s41598-020-64006-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 04/07/2020] [Indexed: 02/07/2023] Open
Abstract
SLC10A7 represents an orphan member of the Solute Carrier Family SLC10. Recently, mutations in the human SLC10A7 gene were associated with skeletal dysplasia, amelogenesis imperfecta, and decreased bone mineral density. However, the exact molecular function of SLC10A7 and the mechanisms underlying these pathologies are still unknown. For this reason, the role of SLC10A7 on intracellular calcium signaling was investigated. SLC10A7 protein expression was negatively correlated with store-operated calcium entry (SOCE) via the plasma membrane. Whereas SLC10A7 knockout HAP1 cells showed significantly increased calcium influx after thapsigargin, ionomycin and ATP/carbachol treatment, SLC10A7 overexpression reduced this calcium influx. Intracellular Ca2+ levels were higher in the SLC10A7 knockout cells and lower in the SLC10A7-overexpressing cells. The SLC10A7 protein co-localized with STIM1, Orai1, and SERCA2. Most of the previously described human SLC10A7 mutations had no effect on the calcium influx and thus were confirmed to be functionally inactive. In the present study, SLC10A7 was established as a novel negative regulator of intracellular calcium signaling that most likely acts via STIM1, Orai1 and/or SERCA2 inhibition. Based on this, SLC10A7 is suggested to be named as negative regulator of intracellular calcium signaling (in short: RCAS).
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Diessl J, Nandy A, Schug C, Habernig L, Büttner S. Stable and destabilized GFP reporters to monitor calcineurin activity in Saccharomyces cerevisiae. ACTA ACUST UNITED AC 2020; 7:106-114. [PMID: 32274389 PMCID: PMC7136757 DOI: 10.15698/mic2020.04.713] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The protein phosphatase calcineurin is activated in response to rising intracellular Ca2+ levels and impacts fundamental cellular processes in organisms ranging from yeast to humans. In fungi, calcineurin orchestrates cellular adaptation to diverse environmental challenges and is essential for virulence of pathogenic species. To enable rapid and large-scale assessment of calcineurin activity in living, unperturbed yeast cells, we have generated stable and destabilized GFP transcriptional reporters under the control of a calcineurin-dependent response element (CDRE). Using the reporters, we show that the rapid dynamics of calcineurin activation and deactivation can be followed by flow cytometry and fluorescence microscopy. This system is compatible with live/dead staining that excludes confounding dead cells from the analysis. The reporters provide technology to monitor calcineurin dynamics during stress and ageing and may serve as a drug-screening platform to identify novel antifungal compounds that selectively target calcineurin.
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Affiliation(s)
- Jutta Diessl
- Department of Molecular Biosciences, the Wenner-Gren Institute, Stockholm University, SE-10691 Stockholm, Sweden
| | - Arpita Nandy
- Department of Molecular Biosciences, the Wenner-Gren Institute, Stockholm University, SE-10691 Stockholm, Sweden
| | - Christina Schug
- Department of Molecular Biosciences, the Wenner-Gren Institute, Stockholm University, SE-10691 Stockholm, Sweden
| | - Lukas Habernig
- Department of Molecular Biosciences, the Wenner-Gren Institute, Stockholm University, SE-10691 Stockholm, Sweden
| | - Sabrina Büttner
- Department of Molecular Biosciences, the Wenner-Gren Institute, Stockholm University, SE-10691 Stockholm, Sweden.,Institute of Molecular Biosciences, University of Graz, A-8010 Graz, Austria
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14
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Lange M, Peiter E. Calcium Transport Proteins in Fungi: The Phylogenetic Diversity of Their Relevance for Growth, Virulence, and Stress Resistance. Front Microbiol 2020; 10:3100. [PMID: 32047484 PMCID: PMC6997533 DOI: 10.3389/fmicb.2019.03100] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/20/2019] [Indexed: 12/26/2022] Open
Abstract
The key players of calcium (Ca2+) homeostasis and Ca2+ signal generation, which are Ca2+ channels, Ca2+/H+ antiporters, and Ca2+-ATPases, are present in all fungi. Their coordinated action maintains a low Ca2+ baseline, allows a fast increase in free Ca2+ concentration upon a stimulus, and terminates this Ca2+ elevation by an exponential decrease – hence forming a Ca2+ signal. In this respect, the Ca2+ signaling machinery is conserved in different fungi. However, does the similarity of the genetic inventory that shapes the Ca2+ peak imply that if “you’ve seen one, you’ve seen them all” in terms of physiological relevance? Individual studies have focused mostly on a single species, and mechanisms elucidated in few model organisms are usually extrapolated to other species. This mini-review focuses on the physiological relevance of the machinery that maintains Ca2+ homeostasis for growth, virulence, and stress responses. It reveals common and divergent functions of homologous proteins in different fungal species. In conclusion, for the physiological role of these Ca2+ transport proteins, “seen one,” in many cases, does not mean: “seen them all.”
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Affiliation(s)
- Mario Lange
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Faculty of Natural Sciences III, Martin Luther University of Halle-Wittenberg, Halle (Saale), Germany
| | - Edgar Peiter
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Faculty of Natural Sciences III, Martin Luther University of Halle-Wittenberg, Halle (Saale), Germany
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15
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Xu H, Fang T, Omran RP, Whiteway M, Jiang L. RNA sequencing reveals an additional Crz1-binding motif in promoters of its target genes in the human fungal pathogen Candida albicans. Cell Commun Signal 2020; 18:1. [PMID: 31900175 PMCID: PMC6942403 DOI: 10.1186/s12964-019-0473-9] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 10/25/2019] [Indexed: 02/06/2023] Open
Abstract
Background The calcium/calcineurin signaling pathway is mediated by the transcription factors NFAT (nuclear factor of activated T cells) in mammals and Crz1 (calcineurin-responsive zinc finger 1) in yeasts and other lower eukaryotes. A previous microarray analysis identified a putative Crz1-binding motif in promoters of its target genes in Candida albicans, but it has not been experimentally demonstrated. Methods An inactivation mutant for CaCRZ1 was generated through CRISPR/Cas9 approach. Transcript profiling was carried out by RNA sequencing of the wild type and the inactivation mutant for CaCRZ1 in response to 0.2 M CaCl2. Gene promoters were scanned by the online MEME (Multiple Em for Motif Elicitation) software. Gel electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (ChIP) analysis were used for in vitro and in vivo CaCrz1-binding experiments, respectively. Results RNA sequencing reveals that expression of 219 genes is positively, and expression of 59 genes is negatively, controlled by CaCrz1 in response to calcium stress. These genes function in metabolism, cell cycling, protein fate, cellular transport, signal transduction, transcription, and cell wall biogenesis. Forty of these positively regulated 219 genes have previously been identified by DNA microarray analysis. Promoter analysis of these common 40 genes reveals a consensus motif [5′-GGAGGC(G/A)C(T/A)G-3′], which is different from the putative CaCrz1-binding motif [5′-G(C/T)GGT-3′] identified in the previous study, but similar to Saccharomyces cerevisiae ScCrz1-binding motif [5′-GNGGC(G/T)CA-3′]. EMSA and ChIP assays indicate that CaCrz1 binds in vitro and in vivo to both motifs in the promoter of its target gene CaUTR2. Promoter mutagenesis demonstrates that these two CaCrz1-binding motifs play additive roles in the regulation of CaUTR2 expression. In addition, the CaCRZ1 gene is positively regulated by CaCrz1. CaCrz1 can bind in vitro and in vivo to its own promoter, suggesting an autoregulatory mechanism for CaCRZ1 expression. Conclusions CaCrz1 differentially binds to promoters of its target genes to regulate their expression in response to calcium stress. CaCrz1 also regulates its own expression through the 5′-TGAGGGACTG-3′ site in its promoter. Video abstract
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Affiliation(s)
- Huihui Xu
- Laboratory for Yeast Molecular and Cell Biology, Department of Food Science, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, 255000, China
| | - Tianshu Fang
- Laboratory for Yeast Molecular and Cell Biology, Department of Food Science, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, 255000, China
| | - Raha Parvizi Omran
- Department of Biology, Concordia University, Montreal, Quebec, H4B 1R6, Canada
| | - Malcolm Whiteway
- Department of Biology, Concordia University, Montreal, Quebec, H4B 1R6, Canada
| | - Linghuo Jiang
- Laboratory for Yeast Molecular and Cell Biology, Department of Food Science, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, 255000, China.
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16
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Xu H, Whiteway M, Jiang L. The tricarboxylic acid cycle, cell wall integrity pathway, cytokinesis and intracellular pH homeostasis are involved in the sensitivity of Candida albicans cells to high levels of extracellular calcium. Genomics 2019; 111:1226-1230. [DOI: 10.1016/j.ygeno.2018.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 06/19/2018] [Accepted: 08/02/2018] [Indexed: 12/15/2022]
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Paganini C, Costantini R, Superti-Furga A, Rossi A. Bone and connective tissue disorders caused by defects in glycosaminoglycan biosynthesis: a panoramic view. FEBS J 2019; 286:3008-3032. [PMID: 31286677 DOI: 10.1111/febs.14984] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 05/22/2019] [Accepted: 07/04/2019] [Indexed: 02/06/2023]
Abstract
Glycosaminoglycans (GAGs) are a heterogeneous family of linear polysaccharides that constitute the carbohydrate moiety covalently attached to the protein core of proteoglycans, macromolecules present on the cell surface and in the extracellular matrix. Several genetic disorders of bone and connective tissue are caused by mutations in genes encoding for glycosyltransferases, sulfotransferases and transporters that are responsible for the synthesis of sulfated GAGs. Phenotypically, these disorders all reflect alterations in crucial biological functions of GAGs in the development, growth and homoeostasis of cartilage and bone. To date, up to 27 different skeletal phenotypes have been linked to mutations in 23 genes encoding for proteins involved in GAG biosynthesis. This review focuses on recent genetic, molecular and biochemical studies of bone and connective tissue disorders caused by GAG synthesis defects. These insights and future research in the field will provide a deeper understanding of the molecular pathogenesis of these disorders and will pave the way for developing common therapeutic strategies that might be targeted to a range of individual phenotypes.
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Affiliation(s)
- Chiara Paganini
- Department of Molecular Medicine, Unit of Biochemistry, University of Pavia, Italy
| | - Rossella Costantini
- Department of Molecular Medicine, Unit of Biochemistry, University of Pavia, Italy
| | - Andrea Superti-Furga
- Division of Genetic Medicine, Lausanne University Hospital, University of Lausanne, Switzerland
| | - Antonio Rossi
- Department of Molecular Medicine, Unit of Biochemistry, University of Pavia, Italy
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Laugel-Haushalter V, Bär S, Schaefer E, Stoetzel C, Geoffroy V, Alembik Y, Kharouf N, Huckert M, Hamm P, Hemmerlé J, Manière MC, Friant S, Dollfus H, Bloch-Zupan A. A New SLC10A7 Homozygous Missense Mutation Responsible for a Milder Phenotype of Skeletal Dysplasia With Amelogenesis Imperfecta. Front Genet 2019; 10:504. [PMID: 31191616 PMCID: PMC6546871 DOI: 10.3389/fgene.2019.00504] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 05/07/2019] [Indexed: 01/25/2023] Open
Abstract
Amelogenesis imperfecta (AI) is a heterogeneous group of rare inherited diseases presenting with enamel defects. More than 30 genes have been reported to be involved in syndromic or non-syndromic AI and new genes are continuously discovered (Smith et al., 2017). Whole-exome sequencing was performed in a consanguineous family. The affected daughter presented with intra-uterine and postnatal growth retardation, skeletal dysplasia, macrocephaly, blue sclerae, and hypoplastic AI. We identified a homozygous missense mutation in exon 11 of SLC10A7 (NM_001300842.2: c.908C>T; p.Pro303Leu) segregating with the disease phenotype. We found that Slc10a7 transcripts were expressed in the epithelium of the developing mouse tooth, bones undergoing ossification, and in vertebrae. Our results revealed that SLC10A7 is overexpressed in patient fibroblasts. Patient cells display altered intracellular calcium localization suggesting that SLC10A7 regulates calcium trafficking. Mutations in this gene were previously reported to cause a similar syndromic phenotype, but with more severe skeletal defects (Ashikov et al., 2018;Dubail et al., 2018). Therefore, phenotypes resulting from a mutation in SLC10A7 can vary in severity. However, AI is the key feature indicative of SLC10A7 mutations in patients with skeletal dysplasia. Identifying this important phenotype will improve clinical diagnosis and patient management.
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Affiliation(s)
- Virginie Laugel-Haushalter
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Faculté de Médecine, FMTS, Institut Génétique Médicale d'Alsace (IGMA), Université de Strasbourg, Strasbourg, France
| | - Séverine Bär
- Laboratoire de Génétique Moléculaire, Génomique, Microbiologie (GMGM), UMR7156, Centre National de Recherche Scientifique (CNRS), Université de Strasbourg, Strasbourg, France
| | - Elise Schaefer
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Faculté de Médecine, FMTS, Institut Génétique Médicale d'Alsace (IGMA), Université de Strasbourg, Strasbourg, France.,Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, IGMA, Strasbourg, France
| | - Corinne Stoetzel
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Faculté de Médecine, FMTS, Institut Génétique Médicale d'Alsace (IGMA), Université de Strasbourg, Strasbourg, France
| | - Véronique Geoffroy
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Faculté de Médecine, FMTS, Institut Génétique Médicale d'Alsace (IGMA), Université de Strasbourg, Strasbourg, France
| | - Yves Alembik
- Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, IGMA, Strasbourg, France
| | - Naji Kharouf
- Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France.,Laboratoire de Biomatériaux et Bioingénierie, Inserm UMR_S 1121, Strasbourg, France
| | - Mathilde Huckert
- Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France
| | - Pauline Hamm
- Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France
| | - Joseph Hemmerlé
- Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France.,Laboratoire de Biomatériaux et Bioingénierie, Inserm UMR_S 1121, Strasbourg, France
| | - Marie-Cécile Manière
- Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France.,Pôle de Médecine et Chirurgie Bucco-dentaires, Hôpital Civil, Centre de référence des maladies rares orales et dentaires, O-Rares, Filière Santé Maladies rares TETE COU, European Reference Network ERN CRANIO, Hôpitaux Universitaires de Strasbourg (HUS), Strasbourg, France
| | - Sylvie Friant
- Laboratoire de Génétique Moléculaire, Génomique, Microbiologie (GMGM), UMR7156, Centre National de Recherche Scientifique (CNRS), Université de Strasbourg, Strasbourg, France
| | - Hélène Dollfus
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Faculté de Médecine, FMTS, Institut Génétique Médicale d'Alsace (IGMA), Université de Strasbourg, Strasbourg, France.,Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, IGMA, Strasbourg, France.,Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Filière SENSGENE, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Agnès Bloch-Zupan
- Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France.,Pôle de Médecine et Chirurgie Bucco-dentaires, Hôpital Civil, Centre de référence des maladies rares orales et dentaires, O-Rares, Filière Santé Maladies rares TETE COU, European Reference Network ERN CRANIO, Hôpitaux Universitaires de Strasbourg (HUS), Strasbourg, France.,Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U1258, CNRS-UMR7104, Université de Strasbourg, Illkirch-Graffenstaden, France.,Eastman Dental Institute, University College London, London, United Kingdom
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The protein kinase Cmk2 negatively regulates the calcium/calcineurin signalling pathway and expression of calcium pump genes PMR1 and PMC1 in budding yeast. Cell Commun Signal 2019; 17:7. [PMID: 30665402 PMCID: PMC6341702 DOI: 10.1186/s12964-019-0320-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 01/14/2019] [Indexed: 12/16/2022] Open
Abstract
Through a genome-wide screen we have identified calcium-tolerant deletion mutants for five genes in the budding yeast Saccharomyces cerevisiae. In addition to CNB1 and RCN1 that are known to play a role in the calcium signalling pathway, the protein kinase gene CMK2, the sphingolipid homeostasis-related gene ORM2 and the gene SIF2 encoding the WD40 repeat-containing subunit of Set3C histone deacetylase complex are involved in the calcium sensitivity of yeast cells to extracellular calcium. Cmk2 and the transcription factor Crz1 have opposite functions in the response of yeast cells to calcium stress. Deletion of CMK2 elevates the level of calcium/calcineurin signalling and increases the expression level of PMR1 and PMC1, which is dependent on Crz1. Effects of Cmk2 on calcium sensitivity and calcium/calcineurin signalling are dependent on its kinase activity. Therefore, Cmk2 is a negative feedback controller of the calcium/calcineurin signalling pathway. Furthermore, the cmk2 crz1 double deletion mutant is more resistant than the crz1 deletion mutant, suggesting that Cmk2 has an additional Crz1-independent role in promoting calcium tolerance.
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20
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Asghar F, Yan H, Jiang L. The putative transcription factor CaMaf1 controls the sensitivity to lithium and rapamycin and represses RNA polymerase III transcription in Candida albicans. FEMS Yeast Res 2018; 18:5047891. [PMID: 29982370 DOI: 10.1093/femsyr/foy068] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 06/23/2018] [Indexed: 12/19/2022] Open
Abstract
Maf1 is a repressor of RNA polymerase (Pol) III transcription for tRNA. Nutrient deprivation and environmental stress repress Pol III transcription through Maf1 in Saccharomyces cerevisiae. The sole Candida albicans homolog CaMaf1 is a protein of 380 amino acids with conserved domains and motifs of the eukaryotic Maf1 family. Here, we show that C. albicans cells lacking CaMAF1 show elevated levels of tRNA. Deletion of CaMAF1 increases the sensitivity of C. albicans cells to lithium cation and SDS as well as tolerance to rapamycin and azole. In addition, deletion of CaMAF1 reduces the level of filamentation and alters the surface morphology of colonies. CaMaf1 is localized in the nucleus of log-phase growing cells. However, a dynamic change of subcellular localization of CaMaf1 exists during serum-induced morphological transition, with CaMaf1 being localized in the nuclei of cells with germ tubes and short filaments but outside of the nuclei of cells with long filaments. In addition, CaMaf1 is required for rapamycin-induced repression of CaERG20, encoding the farnesyl pyrophosphate synthetase involved in ergosterol biosynthesis. Therefore, CaMaf1 plays a role as a general repressor of Pol III transcription in C. albicans.
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Affiliation(s)
- Faiza Asghar
- Laboratory for Yeast Molecular and Cell Biology, the Research Center of Fermentation Technology, School of Agricultural Engineering and Food Science, Shandong University of Technology, 266 XiCunXi Road, Zibo 255000, China
| | - Hongbo Yan
- Laboratory for Yeast Molecular and Cell Biology, the Research Center of Fermentation Technology, School of Agricultural Engineering and Food Science, Shandong University of Technology, 266 XiCunXi Road, Zibo 255000, China
| | - Linghuo Jiang
- Laboratory for Yeast Molecular and Cell Biology, the Research Center of Fermentation Technology, School of Agricultural Engineering and Food Science, Shandong University of Technology, 266 XiCunXi Road, Zibo 255000, China
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21
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Dubail J, Huber C, Chantepie S, Sonntag S, Tüysüz B, Mihci E, Gordon CT, Steichen-Gersdorf E, Amiel J, Nur B, Stolte-Dijkstra I, van Eerde AM, van Gassen KL, Breugem CC, Stegmann A, Lekszas C, Maroofian R, Karimiani EG, Bruneel A, Seta N, Munnich A, Papy-Garcia D, De La Dure-Molla M, Cormier-Daire V. SLC10A7 mutations cause a skeletal dysplasia with amelogenesis imperfecta mediated by GAG biosynthesis defects. Nat Commun 2018; 9:3087. [PMID: 30082715 PMCID: PMC6078967 DOI: 10.1038/s41467-018-05191-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 06/14/2018] [Indexed: 01/10/2023] Open
Abstract
Skeletal dysplasia with multiple dislocations are severe disorders characterized by dislocations of large joints and short stature. The majority of them have been linked to pathogenic variants in genes encoding glycosyltransferases, sulfotransferases or epimerases required for glycosaminoglycan synthesis. Using exome sequencing, we identify homozygous mutations in SLC10A7 in six individuals with skeletal dysplasia with multiple dislocations and amelogenesis imperfecta. SLC10A7 encodes a 10-transmembrane-domain transporter located at the plasma membrane. Functional studies in vitro demonstrate that SLC10A7 mutations reduce SLC10A7 protein expression. We generate a Slc10a7−/− mouse model, which displays shortened long bones, growth plate disorganization and tooth enamel anomalies, recapitulating the human phenotype. Furthermore, we identify decreased heparan sulfate levels in Slc10a7−/− mouse cartilage and patient fibroblasts. Finally, we find an abnormal N-glycoprotein electrophoretic profile in patient blood samples. Together, our findings support the involvement of SLC10A7 in glycosaminoglycan synthesis and specifically in skeletal development. The majority of skeletal dysplasia are caused by pathogenic variants in genes required for glycosaminoglycan (GAG) metabolism. Here, Dubail et al. identify genetic variants in the solute carrier family protein SLC10A7 in families with skeletal dysplasia and amelogenesis imperfecta that disrupt GAG synthesis.
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Affiliation(s)
- Johanne Dubail
- Department of Genetics, INSERM UMR 1163, Université Paris Descartes-Sorbonne Paris Cité, Institut Imagine, AP-HP, Hôpital Necker Enfants Malades, 75015 Paris, France
| | - Céline Huber
- Department of Genetics, INSERM UMR 1163, Université Paris Descartes-Sorbonne Paris Cité, Institut Imagine, AP-HP, Hôpital Necker Enfants Malades, 75015 Paris, France
| | - Sandrine Chantepie
- Cell Growth and Tissue Repair CRRET Laboratory, Université Paris-Est Créteil, EA 4397 CNRS 9215, Créteil, F-94010, France
| | | | - Beyhan Tüysüz
- Department of Pediatric Genetics, Cerrahpasa Medicine School, Istanbul University, 34290 Istanbul, Turkey
| | - Ercan Mihci
- Akdeniz University Paediatric Genetic Deaprtment, 07059 Antalya, Turkey
| | - Christopher T Gordon
- Laboratory of Embryology and Genetics of Congenital Malformations, INSERM UMR 1163, Institut Imagine, 75015 Paris, France
| | | | - Jeanne Amiel
- Laboratory of Embryology and Genetics of Congenital Malformations, INSERM UMR 1163, Institut Imagine, 75015 Paris, France
| | - Banu Nur
- Department of Pediatric Genetics, Cerrahpasa Medicine School, Istanbul University, 34290 Istanbul, Turkey
| | - Irene Stolte-Dijkstra
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700 Groningen, The Netherlands
| | - Albertien M van Eerde
- Department of Genetics, Center for Molecular Medicine, University Medical Center Utrecht, 3508 Utrecht, The Netherlands
| | - Koen L van Gassen
- Department of Genetics, Center for Molecular Medicine, University Medical Center Utrecht, 3508 Utrecht, The Netherlands
| | - Corstiaan C Breugem
- Division of Paediatric Plastic Surgery, Wilhelmina Children´s Hopsital, 3584 Utrecht, The Netherlands
| | - Alexander Stegmann
- Department of Human Genetics, Radboud University Medical Center, 6525 Nijmegen, The Netherlands.,Department of Clinical Genetics, Maastricht University Medical Center, 6202 Maastricht, The Netherlands
| | - Caroline Lekszas
- Institute of Human Genetics, Julius Maximilians University Würzburg, 97074 Würzburg, Germany
| | - Reza Maroofian
- Genetics Research Centre, Molecular and Clinical Sciences Institute, St George's, University of London, Cranmer Terrace, London SW17 ORE, UK
| | - Ehsan Ghayoor Karimiani
- Genetics Research Centre, Molecular and Clinical Sciences Institute, St George's, University of London, Cranmer Terrace, London SW17 ORE, UK.,Next Generation Genetic Clinic, 9175954353 Mashhad, Iran.,Razavi Cancer Research Center, Razavi Hospital, Imam Reza International University, 9198613636 Mashhad, Iran
| | - Arnaud Bruneel
- AP-HP, Biochimie Métabolique et cellulaire, Hôpital Bichat, 75018 Paris, France
| | - Nathalie Seta
- AP-HP, Biochimie Métabolique et cellulaire, Hôpital Bichat, 75018 Paris, France
| | - Arnold Munnich
- Department of Genetics, INSERM UMR 1163, Université Paris Descartes-Sorbonne Paris Cité, Institut Imagine, AP-HP, Hôpital Necker Enfants Malades, 75015 Paris, France
| | - Dulce Papy-Garcia
- Cell Growth and Tissue Repair CRRET Laboratory, Université Paris-Est Créteil, EA 4397 CNRS 9215, Créteil, F-94010, France
| | - Muriel De La Dure-Molla
- Department of Genetics, INSERM UMR 1163, Université Paris Descartes-Sorbonne Paris Cité, Institut Imagine, AP-HP, Hôpital Necker Enfants Malades, 75015 Paris, France.,Laboratory of Molecular Oral Pathophysiology, Centre de Recherche des Cordeliers, INSERM UMRS 1138, University Paris-Descartes, University Pierre et Marie Curie-Paris, 75006 Paris, France
| | - Valérie Cormier-Daire
- Department of Genetics, INSERM UMR 1163, Université Paris Descartes-Sorbonne Paris Cité, Institut Imagine, AP-HP, Hôpital Necker Enfants Malades, 75015 Paris, France.
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Jiang L, Wang J, Asghar F, Snyder N, Cunningham KW. CaGdt1 plays a compensatory role for the calcium pump CaPmr1 in the regulation of calcium signaling and cell wall integrity signaling in Candida albicans. Cell Commun Signal 2018; 16:33. [PMID: 29954393 PMCID: PMC6025805 DOI: 10.1186/s12964-018-0246-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 06/12/2018] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Saccharomyces cerevisiae ScGdt1 and mammalian TMEM165 are two members of the UPF0016 membrane protein family that is likely to form a new group of Ca2+/H+ antiporter and/or a Mn2+ transporter in the Golgi apparatus. We have previously shown that Candida albicans CaGDT1 is a functional ortholog of ScGDT1 in the response of S. cerevisiae to calcium stress. However, how CaGdt1 together with the Golgi calcium pump CaPmr1 regulate calcium homeostasis and cell wall integrity in this fungal pathogen remains unknown. METHODS Chemical sensitivity was tested by dilution assay. Cell survival was examined by measuring colony-forming units and staining with Annexin V-FITC and propidium iodide. Calcium signaling was examined by expression of downstream target gene CaUTR2, while cell wall integrity signaling was revealed by detection of phosphorylated Mkc1 and Cek1. Subcellular localization of CaGdt1 was examined through direct and indirect immunofluorescent approaches. Transcriptomic analysis was carried out with RNA sequencing. RESULTS This study shows that Candida albicans CaGDT1 is also a functional ortholog of ScGDT1 in the response of S. cerevisiae to cell wall stress. CaGdt1 is localized in the Golgi apparatus but at distinct sites from CaPmr1 in C. albicans. Loss of CaGDT1 increases the sensitivity of cell lacking CaPMR1 to cell wall and ER stresses. Deletion of CaGDT1 and/or CaPMR1 increases calcium uptake and activates the calcium/calcineurin signaling. Transcriptomic profiling reveals that core functions shared by CaGdt1 and CaPmr1 are involved in the regulation of cellular transport of metal ions and amino acids. However, CaGdt1 has distinct functions from CaPmr1. Chitin synthase gene CHS2 is up regulated in all three mutants, while CHS3 is only up regulated in the pmr1/pmr1 and the gdt1/gdt1 pmr1/pmr1 mutants. Five genes (DIE2, STT3, OST3, PMT1 and PMT4) of glycosylation pathway and one gene (SWI4) of the cell wall integrity (CWI) pathway are upregulated due to deletion of CaGDT1 and/or CaPMR1. Consistently, deletion of either CaPMR1 or CaGDT1 activates the CaCek1-mediated CWI signaling in a cell wall stress-independent fashion. Calcineurin function is required for the integrity of the cell wall and vacuolar compartments of cells lacking both GDT1 and CaPMR1. CONCLUSIONS CaPmr1 is the major player in the regulation of calcium homeostasis and cell wall stress, while CaGdt1 plays a compensatory role for CaPmr1 in the Golgi compartment in C. albicans.
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Affiliation(s)
- Linghuo Jiang
- Laboratory for Yeast Molecular and Cell Biology, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, Shandong, China.
| | - Junjun Wang
- Department of Food Engineering, Weihai Ocean Vocational College, Weihai, Shandong, China
| | - Faiza Asghar
- Laboratory for Yeast Molecular and Cell Biology, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, Shandong, China
| | - Nathan Snyder
- Department of Biology, the Johns Hopkins University, Baltimore, MD, USA
| | - Kyle W Cunningham
- Department of Biology, the Johns Hopkins University, Baltimore, MD, USA
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23
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Ashikov A, Abu Bakar N, Wen XY, Niemeijer M, Rodrigues Pinto Osorio G, Brand-Arzamendi K, Hasadsri L, Hansikova H, Raymond K, Vicogne D, Ondruskova N, Simon MEH, Pfundt R, Timal S, Beumers R, Biot C, Smeets R, Kersten M, Huijben K, Linders PTA, van den Bogaart G, van Hijum SAFT, Rodenburg R, van den Heuvel LP, van Spronsen F, Honzik T, Foulquier F, van Scherpenzeel M, Lefeber DJ, Mirjam W, Han B, Helen M, Helen M, Peter VH, Jiddeke VDK, Diego M, Lars M, Katja BH, Jozef H, Majid A, Kevin C, Johann TWN. Integrating glycomics and genomics uncovers SLC10A7 as essential factor for bone mineralization by regulating post-Golgi protein transport and glycosylation. Hum Mol Genet 2018; 27:3029-3045. [DOI: 10.1093/hmg/ddy213] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 05/29/2018] [Indexed: 01/13/2023] Open
Affiliation(s)
- Angel Ashikov
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
- Translational Metabolic Laboratory, Department Laboratory Medicine, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Nurulamin Abu Bakar
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
- Translational Metabolic Laboratory, Department Laboratory Medicine, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Xiao-Yan Wen
- Zebrafish Centre for Advanced Drug Discovery & Keenan Research Centre for Biomedical Science, Li Ka Shing Knowledge Institute, St Michael’s Hospital, Toronto, ON, Canada
- Department of Medicine, Physiology & Institute of Medical Science, Faculty of Medicine, University of Toronto, ON, Canada
| | - Marco Niemeijer
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Glentino Rodrigues Pinto Osorio
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Koroboshka Brand-Arzamendi
- Zebrafish Centre for Advanced Drug Discovery & Keenan Research Centre for Biomedical Science, Li Ka Shing Knowledge Institute, St Michael’s Hospital, Toronto, ON, Canada
- Department of Medicine, Physiology & Institute of Medical Science, Faculty of Medicine, University of Toronto, ON, Canada
| | - Linda Hasadsri
- Division of Laboratory Genetics, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Hana Hansikova
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Kimiyo Raymond
- Division of Laboratory Genetics, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Dorothée Vicogne
- CNRS-UMR 8576, Structural and Functional Glycobiology Unit, FRABIO, University of Lille, 59655 Villeneuve d’Ascq, France
| | - Nina Ondruskova
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Marleen E H Simon
- Department of Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Rolph Pfundt
- Department of Human Genetics, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Sharita Timal
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
- Translational Metabolic Laboratory, Department Laboratory Medicine, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Roel Beumers
- Translational Metabolic Laboratory, Department Laboratory Medicine, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Christophe Biot
- CNRS-UMR 8576, Structural and Functional Glycobiology Unit, FRABIO, University of Lille, 59655 Villeneuve d’Ascq, France
| | - Roel Smeets
- Translational Metabolic Laboratory, Department Laboratory Medicine, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Marjan Kersten
- Translational Metabolic Laboratory, Department Laboratory Medicine, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Karin Huijben
- Translational Metabolic Laboratory, Department Laboratory Medicine, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Peter T A Linders
- Department of Tumor Immunology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Geert van den Bogaart
- Department of Tumor Immunology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Sacha A F T van Hijum
- Center for Molecular and Biomolecular Informatics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
- NIZO, 6710 BA Ede, The Netherlands
| | - Richard Rodenburg
- Radboud Center for Mitochondrial Disorders, Translational Metabolic Laboratory, Department of Pediatrics, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | | | - Francjan van Spronsen
- Division of Metabolic Diseases, Beatrix Children’s Hospital, University Medical Center Groningen, PO BOX 30.001, 9700 RB Groningen, The Netherlands
| | - Tomas Honzik
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Francois Foulquier
- CNRS-UMR 8576, Structural and Functional Glycobiology Unit, FRABIO, University of Lille, 59655 Villeneuve d’Ascq, France
| | - Monique van Scherpenzeel
- Translational Metabolic Laboratory, Department Laboratory Medicine, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Dirk J Lefeber
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
- Translational Metabolic Laboratory, Department Laboratory Medicine, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Wamelink Mirjam
- Department of Clinical Chemistry, VU University Medical Center, Amsterdam, The Netherlands
| | - Brunner Han
- Department of Human Genetics, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Mundy Helen
- Centre for Inherited Metabolic Disease, Evelina Children's Hospital, Guys and St Thomas NHS Foundation Trust, London SE1 7EH, UK
| | - Michelakakis Helen
- Department of Enzymology and Cellular Function, Institute of Child Health, Athens, Greece
| | - van Hasselt Peter
- Department of Metabolic Diseases, University Medical Center Utrecht, Utrecht, The Netherlands
| | - van de Kamp Jiddeke
- Department of Clinical Genetics, VU University Medical Center, Amsterdam, The Netherlands
| | - Martinelli Diego
- Genetics and Rare Diseases Research Division, Bambino Gesù Children's Research Hospital, Rome, Italy
| | - Morkrid Lars
- Department of Medical Biochemistry, Oslo University Hospital, and Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | | | | | - Alfadhel Majid
- King Abdullah International Medical Research Centre, King Saud bin Abdul Aziz University for Health Sciences, Division of Genetics, Department of Pediatrics, King Abdullah Specialized Children Hospital, King Abdul Aziz Medical City, Ministry of National Guard-Health Affairs (NGHA), Riyadh, Saudi Arabia
| | - Carpenter Kevin
- NSW Biochemical Genetics Service, The Children's Hospital at Westmead, Disciplines of Genetic Medicine & Child and Adolescent Health, The University of Sydney, NSW 2145, Australia
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Functions of CaPhm7 in the regulation of ion homeostasis, drug tolerance, filamentation and virulence in Candida albicans. BMC Microbiol 2018; 18:49. [PMID: 29866033 PMCID: PMC5987382 DOI: 10.1186/s12866-018-1193-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 05/21/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Calcium-permeable transient receptor potential (TRP) channels exist in eukaryotic cells from yeasts to animals and plants. and they act as sensors for various stresses. Arabidopsis thaliana calcium permeable stress-gated cation channel 1 (AtCSC1) was the first plant calcium-permeable TRP to be described and can be activated by hyperosmotic shock. Candida albicans CaPHM7 is one of the sequence homologs of AtCSC1, but its function remains unknown. RESULTS We show here that CaPhm7 is localized to the plasma membrane in both the yeast and hyphal cells of C. albicans. C. albicans cells lacking CaPHM7 are sensitive to SDS and ketoconazole but tolerant to rapamycin and zinc. In addition, deletion of CaPHM7 leads to a filamentation defect, reduced colony growth and attenuated virulence in the mouse model of systemic infection. CONCLUSIONS CaPhm7 is involved in the regulation of ion homeostasis, drug tolerance, filamentation and virulence in this important human fungal pathogen. CaPhm7 could be a potential target of antifungal drugs.
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25
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Jiang L, Yang Y. The putative transient receptor potential channel protein encoded by the orf19.4805 gene is involved in cation sensitivity, antifungal tolerance, and filamentation in Candida albicans. Can J Microbiol 2018; 64:727-731. [PMID: 29791811 DOI: 10.1139/cjm-2018-0048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Transient receptor potential (TRP) channels, an ancient family of cation channels, are highly conserved in eukaryotes and play various physiological functions, ranging from sensation of ion homeostasis to reception of pain and vision. Calcium-permeable TRP channels have been identified from the plant Arabidopsis thaliana (AtCsc1) and the budding yeast Saccharomyces cerevisiae (ScCsc1). In this study, we characterized the functions of the Csc1 homolog, orf19.4805, in Candida albicans. Orf19.4805 is a protein of 866 amino acids and 11 transmembrane domains, which shares 49% identity (69% similarity) in amino acid sequence with ScRsn1. Here, we demonstrate that deletion of the orf19.4805 gene causes C. albicans cells to be sensitive to SDS (sodium dodecyl sulfate) and antifungal drugs, and tolerance to zinc, manganese, and cadmium ions. Candida albicans cells lacking orf19.4805 show a defect in filamentation in vitro. Therefore, orf19.4805 is involved in the regulation of cation homeostasis and filamentation in C. albicans.
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Affiliation(s)
- Linghuo Jiang
- Laboratory for Yeast Molecular and Cell Biology, the Research Center of Fermentation Technology, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China.,Laboratory for Yeast Molecular and Cell Biology, the Research Center of Fermentation Technology, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
| | - Yi Yang
- Laboratory for Yeast Molecular and Cell Biology, the Research Center of Fermentation Technology, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China.,Laboratory for Yeast Molecular and Cell Biology, the Research Center of Fermentation Technology, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
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26
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Jiang L, Xu D, Hameed A, Fang T, Bakr Ahmad Fazili A, Asghar F. The plasma membrane protein Rch1 and the Golgi/ER calcium pump Pmr1 have an additive effect on filamentation in Candida albicans. Fungal Genet Biol 2018; 115:1-8. [PMID: 29621626 DOI: 10.1016/j.fgb.2018.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 03/18/2018] [Accepted: 04/01/2018] [Indexed: 12/17/2022]
Abstract
Pmr1 is the Golgi/ER calcium pump, while Rch1 is a newly identified negative regulator of calcium influx in the plasma membrane of yeast cells. We show here that CaRch1 plays a dominant role over CaPmr1 in response of Candida albicans to SDS and tunicamycin stresses, while CaPmr1 has a major role in cell wall stress. Deletion of CaRCH1 increases the calcium/calcineurin signaling level in cells lacking CaPMR1. Calcineurin function is required for the role of CaRch1 in SDS stresses, while it is required for the function of CaPmr1 under all conditions examined. Disruption of CaRCH1 alone does not reduce the cell wall chitin, mannan or β-glucan content, but lack of CaRCH1 slightly decreases the chitin content of cells lacking CaPMR1. Furthermore, CaRch1 and CaPmr1 have an additive effect on filamentation of C. albicans cells in vitro. Cells lacking both CaRCH1 and CaPMR1 and cells lacking CaPMR1 alone show a similar degree of virulence attenuation, being much more attenuated than cells lacking CaRCH1 alone. Therefore, CaRch1 genetically interacts with CaPmr1 in the regulation of in vitro filamentation in C. albicans.
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Affiliation(s)
- Linghuo Jiang
- Laboratory for Yeast Molecular and Cell Biology, The Research Center of Fermentation Technology, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, Shandong, China.
| | - Dayong Xu
- College of Life Sciences, Huaibei Normal University, Huaibei 235000, Anhui, China
| | - Ahsan Hameed
- Laboratory for Yeast Molecular and Cell Biology, The Research Center of Fermentation Technology, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, Shandong, China
| | - Tianshu Fang
- Laboratory for Yeast Molecular and Cell Biology, The Research Center of Fermentation Technology, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, Shandong, China
| | - Abu Bakr Ahmad Fazili
- Laboratory for Yeast Molecular and Cell Biology, The Research Center of Fermentation Technology, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, Shandong, China
| | - Faiza Asghar
- Laboratory for Yeast Molecular and Cell Biology, The Research Center of Fermentation Technology, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, Shandong, China
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27
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Feng J, Duan Y, Qin Y, Sun W, Zhuang Z, Zhu D, Jiang L. The N-terminal pY33XL motif of CaPsy2 is critical for the function of protein phosphatase 4 in CaRad53 deactivation, DNA damage-induced filamentation and virulence in Candida albicans. Int J Med Microbiol 2017; 307:471-480. [PMID: 28967545 DOI: 10.1016/j.ijmm.2017.09.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 09/11/2017] [Accepted: 09/19/2017] [Indexed: 11/25/2022] Open
Abstract
Protein phosphatase PP4 is composed of one catalytic subunit and one or two regulatory subunits and conserved in eukaryotic cells. The catalytic subunit CaPph3 forms a complex with the regulatory subunit CaPsy2, which dephosphorylates activated CaRad53 during adaptation to and recovery from MMS-mediated DNA damage. We show here that the N-terminal Y33A mutation of CaPsy2 blocks the interaction between CaPph3 and CaRad53, the deactivation of CaRad53 and the morphologic switch in recovery from genotoxic stress. In Saccharomyces cerevisiae, the ScPph3-ScPsy2-ScPsy4 complex functions to dephosphorylate γH2A. In this study, we show that CaPsy4 is a functional homolog of ScPsy4 and not involved in the deactivation of CaRad53 or CaHta, the ortholog of H2A. However, deletion of CaPSY4 causes C. albicans cells a sensitivity to genotoxic reagents and a defect in DNA damage-induced filamentation. CaPsy4 interacts with both CaPph3 and CaPsy2, but the function of CaPsy4 is independent of CaPph3 and CaPsy2 in response to genotoxic stress. C. albicans cells lacking CaPPH3, CaPSY2 or CaPSY4, and C. albicans cells carrying the Y33A mutation of CaPSY2, show increased virulence to mice. Therefore, PP4 plays a negative role in regulating the DNA damage-induced filamentation and the virulence in C. albicans.
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Affiliation(s)
- Jinrong Feng
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong 226001, China
| | - Yinong Duan
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong 226001, China
| | - Yongwei Qin
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong 226001, China
| | - Wei Sun
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong 226001, China
| | - Zhong Zhuang
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong 226001, China
| | - Dandan Zhu
- Department of Pathogen Biology, School of Medicine, Nantong University, Nantong 226001, China
| | - Linghuo Jiang
- Laboratory for Yeast Molecular and Cell Biology, The Research Center of Fermentation Technology, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China.
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28
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Shah SZA, Hussain T, Zhao D, Yang L. A central role for calcineurin in protein misfolding neurodegenerative diseases. Cell Mol Life Sci 2017; 74:1061-1074. [PMID: 27682820 PMCID: PMC11107525 DOI: 10.1007/s00018-016-2379-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 09/06/2016] [Accepted: 09/23/2016] [Indexed: 12/25/2022]
Abstract
Accumulation of misfolded/unfolded aggregated proteins in the brain is a hallmark of many neurodegenerative diseases affecting humans and animals. Dysregulation of calcium (Ca2+) and disruption of fast axonal transport (FAT) are early pathological events that lead to loss of synaptic integrity and axonal degeneration in early stages of neurodegenerative diseases. Dysregulated Ca2+ in the brain is triggered by accumulation of misfolded/unfolded aggregated proteins in the endoplasmic reticulum (ER), a major Ca2+ storing organelle, ultimately leading to neuronal dysfunction and apoptosis. Calcineurin (CaN), a Ca2+/calmodulin-dependent serine/threonine phosphatase, has been implicated in T cells activation through the induction of nuclear factor of activated T cells (NFAT). In addition to the involvement of several other signaling cascades, CaN has been shown to play a role in early synaptic dysfunction and neuronal death. Therefore, inhibiting hyperactivated CaN in early stages of disease might be a promising therapeutic strategy for treating patients with protein misfolding diseases. In this review, we briefly summarize the structure of CaN, inhibition mechanisms by which immunosuppressants inhibit CaN, role of CaN in maintaining neuronal and synaptic integrity and homeostasis and the role played by CaN in protein unfolding/misfolding neurodegenerative diseases.
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Affiliation(s)
- Syed Zahid Ali Shah
- National Animal Transmissible Spongiform Encephalopathy Laboratory and Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine and State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, 100193, China
| | - Tariq Hussain
- National Animal Transmissible Spongiform Encephalopathy Laboratory and Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine and State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, 100193, China
| | - Deming Zhao
- National Animal Transmissible Spongiform Encephalopathy Laboratory and Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine and State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, 100193, China
| | - Lifeng Yang
- National Animal Transmissible Spongiform Encephalopathy Laboratory and Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine and State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, 100193, China.
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29
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Zhao Y, Xu H, Zhang Y, Jiang L. Vcx1-D1 (M383I), the Vcx1 mutant with a calcineurin-independent vacuolar Ca(2+)/H(+) exchanger activity, confers calcineurin-independent Mn(2+) tolerance in Saccharomyces cerevisiae. Can J Microbiol 2016; 62:475-84. [PMID: 27100389 DOI: 10.1139/cjm-2015-0595] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The Vcx1-M1 mutant is known to confer calcineurin-dependent Mn(2+) tolerance in budding yeast. Here, we demonstrate that another Vcx1 mutant, Vcx1-D1 with calcineurin-independent vacuolar Ca(2+)/H(+) exchanger activity, confers calcineurin-independent Mn(2+) tolerance. Unlike Vcx1-M1, the Mn(2+) tolerance conferred by Vcx1-D1 is dependent on the presence of Pmr1 or Pmc1. The Pmr1-dependent Mn(2+) tolerance of Vcx1-D1 requires the presence of calcineurin but not the functioning of the Ca(2+)/calcineurin signaling pathway. Similar to the wild-type Vcx1, C-terminally green fluorescent protein tagged Vcx1-D1 and Vcx1-M1 mutants localize to the endoplasmic reticulum instead of its normal vacuolar destination, but they remain functional in Ca(2+) sensitivity and Mn(2+) tolerance.
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Affiliation(s)
- Yunying Zhao
- a The State Key Laboratory of Food Science and Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, People's Republic of China.,b The National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Huihui Xu
- b The National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Yan Zhang
- b The National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Linghuo Jiang
- a The State Key Laboratory of Food Science and Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, People's Republic of China.,b The National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, People's Republic of China
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30
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Jiang L, Xu D, Chen Z, Cao Y, Gao P, Jiang Y. The putative ABC transporter encoded by the orf19.4531 plays a role in the sensitivity of Candida albicans cells to azole antifungal drugs. FEMS Yeast Res 2016; 16:fow024. [PMID: 26975389 DOI: 10.1093/femsyr/fow024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2016] [Indexed: 12/11/2022] Open
Abstract
ATP-binding cassette (ABC) transporters constitute a large superfamily of integral membrane proteins in prokaryotic and eukaryotic cells. In the human fungal pathogen Candida albicans, there are 28 genes encoding ABC transporters and many of them have not been characterized so far. The orf19.4531 (also known as IPF7530) encodes a putative ABC transporter. In this study, we have demonstrated that disruption of orf19.4531 causes C. albicans cells to become tolerant to azoles, but not to polyene antifungals and terbinafine. Therefore, the protein encoded by orf19.4531 is involved in azole sensitivity and we name it as ROA1, the regulator of azole sensitivity 1 gene. Consistently, we show that the expression of ROA1 is responsive to treatment of either fluconazole or ketoconazole inC. albicans In addition, through a GFP tagging approach, Roa1 is localized in a small punctuate compartment adjacent to the vacuolar membrane. However, ROA1 is not essential for the in vitro filamentation of C. albicans cells.
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Affiliation(s)
- Linghuo Jiang
- The National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Dayong Xu
- The National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Zhen Chen
- The National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Yongbing Cao
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Pinghui Gao
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Yuanying Jiang
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China
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