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Lu Q, Li Y, Liao J, Ni Z, Xia S, Yang M, Li H, Guo J. Histone acetylation is associated with pupal diapause in cotton bollworm, Helicoverpa armigera. PEST MANAGEMENT SCIENCE 2024; 80:1400-1411. [PMID: 37933450 DOI: 10.1002/ps.7870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 10/18/2023] [Accepted: 11/07/2023] [Indexed: 11/08/2023]
Abstract
BACKGROUND Diapause is an environmentally preprogrammed period of arrested development that is important to insect survival and population growth. Histone acetylation, an epigenetic modification, has several biological functions, but its role in agricultural pest diapause is unknown. In this study, we investigated the role of histone H3 acetylation in the diapause of Helicoverpa armigera. RESULTS The histone H3 gene of H. armigera was cloned, and multiple sequence alignment of amino acids revealed that the potential lysine acetylation sites were highly conserved across species. Investigation of histone H3 acetylation levels in diapause- and nondiapause-type pupae showed that acetylation levels were down-regulated in diapause-type pupae and were lower in diapausing pupae compared to nondiapause pupae. By screening the genome, six histone acetyltransferase (HAT) and eight histone deacetylase (HDAC) genes responsible for antagonizing catalytic histone acetylation modifications were identified in H. armigera, and most of them exhibited different expression patterns between diapause- and nondiapause-type pupae. To elucidate the effect of histone H3 acetylation on diapause in H. armigera, the diapause pupae were injected with the histone acetylation activator trichostatin A (TSA). The results indicated that TSA injection increased the levels of histone H3 acetylation, causing the diapausing pupae to revert to development. Furthermore, transcriptome analysis revealed that 259 genes were affected by TSA injection, including genes associated with metabolism, resistance, and immunological responses. CONCLUSION These results suggest that histone acetylation is inseparably related to the pupal diapause of H. armigera, which promises to be a potential target for pest control. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Qin Lu
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang, China
| | - Yan Li
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang, China
| | - Jing Liao
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang, China
| | - Zhaohong Ni
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang, China
| | - Shunchao Xia
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang, China
| | - Maofa Yang
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang, China
| | - Haiyin Li
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang, China
| | - Jianjun Guo
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang, China
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Komaragiri Y, Panhwar MH, Fregin B, Jagirdar G, Wolke C, Spiegler S, Otto O. Mechanical characterization of isolated mitochondria under conditions of oxidative stress. BIOMICROFLUIDICS 2022; 16:064101. [PMID: 36406339 PMCID: PMC9674388 DOI: 10.1063/5.0111581] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 11/02/2022] [Indexed: 06/16/2023]
Abstract
Mechanical properties have been proven to be a pivotal parameter to enhance our understanding of living systems. While research during the last decades focused on cells and tissues, little is known about the role of organelle mechanics in cell function. Here, mitochondria are of specific interest due to their involvement in numerous physiological and pathological processes, e.g., in the production and homeostasis of reactive oxygen species (ROS). Using real-time fluorescence and deformability cytometry, we present a microfluidic technology that is capable to determine the mechanical properties of individual mitochondria at a throughput exceeding 100 organelles per second. Our data on several thousands of viable mitochondria isolated from rat C6 glial cells yield a homogenous population with a median deformation that scales with the applied hydrodynamic stress. In two proof-of-principle studies, we investigated the impact of exogenously and endogenously produced ROS on mitochondria mechanics. Exposing C6 cells to hydrogen peroxide (H2O2) triggers superoxide production and leads to a reduction in mitochondria size while deformation is increased. In a second study, we focused on the knockout of tafazzin, which has been associated with impaired remodeling of the mitochondrial membrane and elevated levels of ROS. Interestingly, our results reveal the same mechanical alterations as observed after the exposure to H2O2, which points to a unified biophysical mechanism of how mitochondria respond to the presence of oxidative stress. In summary, we introduce high-throughput mechanical phenotyping into the field of organelle biology with potential applications for understanding sub-cellular dynamics that have not been accessible before.
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Affiliation(s)
| | | | | | - Gayatri Jagirdar
- Institut für Medizinische Biochemie und Molekularbiologie, Universitätsmedizin Greifswald, Ferdinand-Sauerbruch-Strasse, 17475 Greifswald, Germany
| | - Carmen Wolke
- Institut für Medizinische Biochemie und Molekularbiologie, Universitätsmedizin Greifswald, Ferdinand-Sauerbruch-Strasse, 17475 Greifswald, Germany
| | | | - Oliver Otto
- Author to whom correspondence should be addressed:
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O’Neill KC, Liapis E, Harris BT, Perlin DS, Carter CL. Mass spectrometry imaging discriminates glioblastoma tumor cell subpopulations and different microvascular formations based on their lipid profiles. Sci Rep 2022; 12:17069. [PMID: 36224354 PMCID: PMC9556690 DOI: 10.1038/s41598-022-22093-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 10/10/2022] [Indexed: 12/30/2022] Open
Abstract
Glioblastoma is a prevalent malignant brain tumor and despite clinical intervention, tumor recurrence is frequent and usually fatal. Genomic investigations have provided a greater understanding of molecular heterogeneity in glioblastoma, yet there are still no curative treatments, and the prognosis has remained unchanged. The aggressive nature of glioblastoma is attributed to the heterogeneity in tumor cell subpopulations and aberrant microvascular proliferation. Ganglioside-directed immunotherapy and membrane lipid therapy have shown efficacy in the treatment of glioblastoma. To truly harness these novel therapeutics and develop a regimen that improves clinical outcome, a greater understanding of the altered lipidomic profiles within the glioblastoma tumor microenvironment is urgently needed. In this work, high resolution mass spectrometry imaging was utilized to investigate lipid heterogeneity in human glioblastoma samples. Data presented offers the first insight into the histology-specific accumulation of lipids involved in cell metabolism and signaling. Cardiolipins, phosphatidylinositol, ceramide-1-phosphate, and gangliosides, including the glioblastoma stem cell marker, GD3, were shown to differentially accumulate in tumor and endothelial cell subpopulations. Conversely, a reduction in sphingomyelins and sulfatides were detected in tumor cell regions. Cellular accumulation for each lipid class was dependent upon their fatty acid residue composition, highlighting the importance of understanding lipid structure-function relationships. Discriminating ions were identified and correlated to histopathology and Ki67 proliferation index. These results identified multiple lipids within the glioblastoma microenvironment that warrant further investigation for the development of predictive biomarkers and lipid-based therapeutics.
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Affiliation(s)
- Kelly C. O’Neill
- grid.429392.70000 0004 6010 5947Center for Discovery and Innovation, Hackensack Meridian Health, 111 Ideation Way, Nutley, NJ 07110 USA
| | - Evangelos Liapis
- grid.429392.70000 0004 6010 5947Center for Discovery and Innovation, Hackensack Meridian Health, 111 Ideation Way, Nutley, NJ 07110 USA
| | - Brent T. Harris
- grid.411667.30000 0001 2186 0438Departments of Neurology and Pathology, Georgetown University Medical Center, Washington, D.C. 20007 USA
| | - David S. Perlin
- grid.429392.70000 0004 6010 5947Center for Discovery and Innovation, Hackensack Meridian Health, 111 Ideation Way, Nutley, NJ 07110 USA ,grid.429392.70000 0004 6010 5947Department of Medical Sciences, Hackensack Meridian School of Medicine, Nutley, NJ 07110 USA
| | - Claire L. Carter
- grid.429392.70000 0004 6010 5947Center for Discovery and Innovation, Hackensack Meridian Health, 111 Ideation Way, Nutley, NJ 07110 USA ,grid.429392.70000 0004 6010 5947Department of Pathology, Hackensack Meridian School of Medicine, Nutley, NJ 07110 USA
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Jagirdar G, Elsner M, Scharf C, Simm S, Borucki K, Peter D, Lalk M, Methling K, Linnebacher M, Krohn M, Wolke C, Lendeckel U. Re-Expression of Tafazzin Isoforms in TAZ-Deficient C6 Glioma Cells Restores Cardiolipin Composition but Not Proliferation Rate and Alterations in Gene Expression. Front Genet 2022; 13:931017. [PMID: 35957687 PMCID: PMC9358009 DOI: 10.3389/fgene.2022.931017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 06/13/2022] [Indexed: 11/18/2022] Open
Abstract
Tafazzin—an acyltransferase—is involved in cardiolipin (CL) remodeling. CL is associated with mitochondrial function, structure and more recently with cell proliferation. Various tafazzin isoforms exist in humans. The role of these isoforms in cardiolipin remodeling is unknown. Aim of this study was to investigate if specific isoforms like Δ5 can restore the wild type phenotype with respect to CL composition, cellular proliferation and gene expression profile. In addition, we aimed to determine the molecular mechanism by which tafazzin can modulate gene expression by applying promoter analysis and (Ingenuity Pathway Analyis) IPA to genes regulated by TAZ-deficiency. Expression of Δ5 and rat full length TAZ in C6-TAZ- cells could fully restore CL composition and—as proven for Δ5—this is naturally associated with restoration of mitochondrial respiration. A similar restoration of CL-composition could not be observed after re-expression of an enzymatically dead full-length rat TAZ (H69L; TAZMut). Re-expression of only rat full length TAZ could restore proliferation rate. Surprisingly, the Δ5 variant failed to restore wild-type proliferation. Further, as expected, re-expression of the TAZMut variant completely failed to reverse the gene expression changes, whereas re-expression of the TAZ-FL variant largely did so and the Δ5 variant to somewhat less extent. Very likely TAZ-deficiency provokes substantial long-lasting changes in cellular lipid metabolism which contribute to changes in proliferation and gene expression, and are not or only very slowly reversible.
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Affiliation(s)
- Gayatri Jagirdar
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, University of Greifswald, Greifswald, Germany
| | - Matthias Elsner
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Christian Scharf
- Department of Otorhinolaryngology, Head, and Neck Surgery, University Medicine Greifswald, Greifswald, Germany
| | - Stefan Simm
- Institute of Bioinformatics, University Medicine Greifswald, Greifswald, Germany
| | - Katrin Borucki
- Institute of Clinical Chemistry, Department of Pathobiochemistry, Medical Faculty, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Daniela Peter
- Institute of Clinical Chemistry, Department of Pathobiochemistry, Medical Faculty, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Michael Lalk
- Institute of Biochemistry, University of Greifswald, Greifswald, Germany
| | - Karen Methling
- Institute of Biochemistry, University of Greifswald, Greifswald, Germany
| | - Michael Linnebacher
- Department of General Surgery, Molecular Oncology, and Immunotherapy, Rostock University Medical Center, Rostock, Germany
| | - Mathias Krohn
- Department of General Surgery, Molecular Oncology, and Immunotherapy, Rostock University Medical Center, Rostock, Germany
| | - Carmen Wolke
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, University of Greifswald, Greifswald, Germany
| | - Uwe Lendeckel
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, University of Greifswald, Greifswald, Germany
- *Correspondence: Uwe Lendeckel,
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Oemer G, Koch J, Wohlfarter Y, Lackner K, Gebert REM, Geley S, Zschocke J, Keller MA. The lipid environment modulates cardiolipin and phospholipid constitution in wild type and tafazzin-deficient cells. J Inherit Metab Dis 2022; 45:38-50. [PMID: 34494285 DOI: 10.1002/jimd.12433] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/31/2021] [Accepted: 09/06/2021] [Indexed: 12/28/2022]
Abstract
Deficiency of the transacylase tafazzin due to loss of function variants in the X-chromosomal TAFAZZIN gene causes Barth syndrome (BTHS) with severe neonatal or infantile cardiomyopathy, neutropenia, myopathy, and short stature. The condition is characterized by drastic changes in the composition of cardiolipins, a mitochondria-specific class of phospholipids. Studies examining the impact of tafazzin deficiency on the metabolism of other phospholipids have so far generated inhomogeneous and partly conflicting results. Recent studies showed that the cardiolipin composition in cells and different murine tissues is highly dependent on the surrounding lipid environment. In order to study the relevance of different lipid states and tafazzin function for cardiolipin and phospholipid homeostasis we conducted systematic modulation experiments in a CRISPR/Cas9 knock-out model for BTHS. We found that-irrespective of tafazzin function-the composition of cardiolipins strongly depends on the nutritionally available lipid pool. Tafazzin deficiency causes a consistent shift towards cardiolipin species with more saturated and shorter acyl chains. Interestingly, the typical biochemical BTHS phenotype in phospholipid profiles of HEK 293T TAZ knock-out cells strongly depends on the cellular lipid context. In response to altered nutritional lipid compositions, we measured more pronounced changes on phospholipids that were largely masked under standard cell culturing conditions, therewith giving a possible explanation for the conflicting results reported so far on BTHS lipid phenotypes.
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Affiliation(s)
- Gregor Oemer
- Institute of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Jakob Koch
- Institute of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Yvonne Wohlfarter
- Institute of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Katharina Lackner
- Institute of Biological Chemistry, Medical University of Innsbruck, Innsbruck, Austria
| | - Rita E M Gebert
- Institute of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Stephan Geley
- Institute of Pathophysiology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | - Johannes Zschocke
- Institute of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Markus A Keller
- Institute of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
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Ahmadpour ST, Mahéo K, Servais S, Brisson L, Dumas JF. Cardiolipin, the Mitochondrial Signature Lipid: Implication in Cancer. Int J Mol Sci 2020; 21:E8031. [PMID: 33126604 PMCID: PMC7662448 DOI: 10.3390/ijms21218031] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/20/2020] [Accepted: 10/26/2020] [Indexed: 12/24/2022] Open
Abstract
Cardiolipins (CLs) are specific phospholipids of the mitochondria composing about 20% of the inner mitochondria membrane (IMM) phospholipid mass. Dysregulation of CL metabolism has been observed in several types of cancer. In most cases, the evidence for a role for CL in cancer is merely correlative, suggestive, ambiguous, and cancer-type dependent. In addition, CLs could play a pivotal role in several mitochondrial functions/parameters such as bioenergetics, dynamics, mitophagy, and apoptosis, which are involved in key steps of cancer aggressiveness (i.e., migration/invasion and resistance to treatment). Therefore, this review focuses on studies suggesting that changes in CL content and/or composition, as well as CL metabolism enzyme levels, may be linked with the progression and the aggressiveness of some types of cancer. Finally, we also introduce the main mitochondrial function in which CL could play a pivotal role with a special focus on its implication in cancer development and therapy.
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Affiliation(s)
| | | | | | | | - Jean-François Dumas
- Université de Tours, Inserm, Nutrition, Croissance et Cancer UMR1069, 37032 Tours, France; (S.T.A.); (K.M.); (S.S.); (L.B.)
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Proliferation of C6 glioma cells requires the phospholipid remodeling enzyme tafazzin independent of cardiolipin composition. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1865:158596. [PMID: 31884050 DOI: 10.1016/j.bbalip.2019.158596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 12/19/2019] [Accepted: 12/22/2019] [Indexed: 11/23/2022]
Abstract
The mitochondrial phospholipid (CL) has been linked to mitochondrial and cellular functions. It has been postulated that the composition of CL is of impact for mitochondrial energy metabolism and cell proliferation. Although a correlation between CL composition and proliferation could be demonstrated for several cell types, evidence for a causal relationship remains obscure. Here, we applied two independent approaches, i) supplementation of fatty acids and ii) knock-out of the phospholipid remodeling enzyme tafazzin, to manipulate CL composition and analyzed the response on proliferation of C6 glioma cells. Both strategies caused substantial changes in the distribution of cellular fatty acids as well as in the distribution of fatty acids incorporated in CL that were accompanied by changes of the composition of molecular CL species. These changes did not correlate with cell proliferation. However, knock-out of tafazzin caused dramatic reduction in proliferation of C6 glioma cells independent of CL composition. The mechanism of tafazzin-dependent restriction of proliferation remains unclear. Among the various fatty acids administered only palmitic acid restricted cell proliferation by induction of cell death.
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Wolke C, Gürtler S, Peter D, Weingärtner J, Domanska G, Lendeckel U, Schild L. Vitamin B6 deficiency in new born rats affects hepatic cardiolipin composition and oxidative phosphorylation. Exp Biol Med (Maywood) 2019; 244:1619-1628. [PMID: 31752529 DOI: 10.1177/1535370219889880] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Vitamin B6 deficiency during pregnancy translates into a severe vitamin B6 deficiency (plasma levels decreased by 97%) in new-born rats. Further, hallmarks are increased (+89%) concentrations of homocysteine, gross changes in gene methylation and expression, and metabolic alterations including lipid metabolism. This study focuses on determining the effects of vitamin B6-deficiency on cardiolipin composition and oxidative phosphorylation in liver. For this purpose, hepatic cardiolipin composition was analyzed by means of LC/MS/MS, and mitochondrial oxygen consumption was determined by using a Clark-type electrode in a rat model of vitamin B6 deficiency. Liver mitochondria from new-born rats with pre-term vitamin B6 deficiency responded with substantial alterations in cardiolipin composition that include the following changes in the amounts of cardiolipin incorporated fatty acids: increase in C16, decrease in C18, decrease in saturated fatty acid, as well as increase in amount of oxidized cardiolipin species. These changes were accompanied by significantly decreased capacity of oxidative phosphorylation. In conclusion, vitamin B6 deficiency in new born rats induces massive alterations of cardiolipin composition and function of liver mitochondria. These findings support the importance of sufficient periconceptional supply of vitamin B6 to prevent vitamin B6 deficiency.Impact statementVitamin B6 (VitB6) is an active co-enzyme for more than 150 enzymes and is required for a great diversity of biosynthesis and metabolic reactions. There is an increased need for VitB6 during pregnancy and sufficient supply of VitB6 is crucial for the prevention of cleft palate and neural tube defects. We show that liver mitochondria from new-born rats with pre-term VitB6 deficiency respond with substantial alterations in cardiolipin (CL) composition and in the amount of oxidized CL species. These changes are associated with a decrease in the efficiency of oxidative phosphorylation. The results of this study support the significance of sufficient supply of VitB6 during pregnancy (and periconceptional) for diminishing the number of early abortions and minimizing malformation. The established link between VitB6 deficiency, CL composition, and mitochondrial respiration/energy production provides mechanistic insight as to how the VitB6 deficiency translates into the known pathophysiological and clinically relevant conditions.
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Affiliation(s)
- Carmen Wolke
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, Greifswald D-17475, Germany
| | - Sarah Gürtler
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, Greifswald D-17475, Germany
| | - Daniela Peter
- Department of Pathological Biochemistry, Otto-von-Guericke University Magdeburg, Magdeburg D-39120, Germany
| | - Jens Weingärtner
- Institute of Anatomy and Cell Biology, University Medicine Greifswald, Greifswald D-17489, Germany
| | - Grazyna Domanska
- Institute of Immunology, University Medicine Greifswald, Greifswald D-17475, Germany
| | - Uwe Lendeckel
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, Greifswald D-17475, Germany
| | - Lorenz Schild
- Department of Pathological Biochemistry, Otto-von-Guericke University Magdeburg, Magdeburg D-39120, Germany
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