Edgetic Perturbations Contribute to Phenotypic Variability in PEX26 Deficiency
Peroxisomes share metabolic pathways with other organelles and peroxisomes are embedded into key cellular processes. However, the specific function of many peroxisomal proteins remains unclear and restricted knowledge of the peroxisomal protein interaction network limits a precise mapping of this ne...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-11-01
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| Series: | Frontiers in Genetics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fgene.2021.726174/full |
| _version_ | 1818731486716624896 |
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| author | Amelie S. Lotz-Havla Mathias Woidy Philipp Guder Jessica Schmiesing Ralf Erdmann Hans R. Waterham Ania C. Muntau Søren W. Gersting |
| author_facet | Amelie S. Lotz-Havla Mathias Woidy Philipp Guder Jessica Schmiesing Ralf Erdmann Hans R. Waterham Ania C. Muntau Søren W. Gersting |
| author_sort | Amelie S. Lotz-Havla |
| collection | DOAJ |
| description | Peroxisomes share metabolic pathways with other organelles and peroxisomes are embedded into key cellular processes. However, the specific function of many peroxisomal proteins remains unclear and restricted knowledge of the peroxisomal protein interaction network limits a precise mapping of this network into the cellular metabolism. Inborn peroxisomal disorders are autosomal or X-linked recessive diseases that affect peroxisomal biogenesis (PBD) and/or peroxisomal metabolism. Pathogenic variants in the PEX26 gene lead to peroxisomal disorders of the full Zellweger spectrum continuum. To investigate the phenotypic complexity of PEX26 deficiency, we performed a combined organelle protein interaction screen and network medicine approach and 1) analyzed whether PEX26 establishes interactions with other peroxisomal proteins, 2) deciphered the PEX26 interaction network, 3) determined how PEX26 is involved in further processes of peroxisomal biogenesis and metabolism, and 4) showed how variant-specific disruption of protein-protein interactions (edgetic perturbations) may contribute to phenotypic variability in PEX26 deficient patients. The discovery of 14 novel protein-protein interactions for PEX26 revealed a hub position of PEX26 inside the peroxisomal interactome. Analysis of edgetic perturbations of PEX26 variants revealed a strong correlation between the number of affected protein-protein interactions and the molecular phenotype of matrix protein import. The role of PEX26 in peroxisomal biogenesis was expanded encompassing matrix protein import, division and proliferation, and membrane assembly. Moreover, the PEX26 interaction network intersects with cellular lipid metabolism at different steps. The results of this study expand the knowledge about the function of PEX26 and refine genotype-phenotype correlations, which may contribute to our understanding of the underlying disease mechanism of PEX26 deficiency. |
| first_indexed | 2024-12-17T23:18:27Z |
| format | Article |
| id | doaj.art-1d918e65f1b043d5b0911c91c23a0f2f |
| institution | Directory Open Access Journal |
| issn | 1664-8021 |
| language | English |
| last_indexed | 2024-12-17T23:18:27Z |
| publishDate | 2021-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Genetics |
| spelling | doaj.art-1d918e65f1b043d5b0911c91c23a0f2f2022-12-21T21:28:58ZengFrontiers Media S.A.Frontiers in Genetics1664-80212021-11-011210.3389/fgene.2021.726174726174Edgetic Perturbations Contribute to Phenotypic Variability in PEX26 DeficiencyAmelie S. Lotz-Havla0Mathias Woidy1Philipp Guder2Jessica Schmiesing3Ralf Erdmann4Hans R. Waterham5Ania C. Muntau6Søren W. Gersting7Dr. von Hauner Children’s Hospital, Ludwig-Maximilians-University, Munich, GermanyUniversity Children’s Research, University Medical Center Hamburg-Eppendorf, Hamburg, GermanyUniversity Children’s Research, University Medical Center Hamburg-Eppendorf, Hamburg, GermanyUniversity Children’s Research, University Medical Center Hamburg-Eppendorf, Hamburg, GermanyInstitut für Physiologische Chemie, Medizinische Fakultät der Ruhr-Universität Bochum, Bochum, GermanyLaboratory Genetic Metabolic Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, NetherlandsChildren’s Hospital, University Medical Center Hamburg-Eppendorf, Hamburg, GermanyUniversity Children’s Research, University Medical Center Hamburg-Eppendorf, Hamburg, GermanyPeroxisomes share metabolic pathways with other organelles and peroxisomes are embedded into key cellular processes. However, the specific function of many peroxisomal proteins remains unclear and restricted knowledge of the peroxisomal protein interaction network limits a precise mapping of this network into the cellular metabolism. Inborn peroxisomal disorders are autosomal or X-linked recessive diseases that affect peroxisomal biogenesis (PBD) and/or peroxisomal metabolism. Pathogenic variants in the PEX26 gene lead to peroxisomal disorders of the full Zellweger spectrum continuum. To investigate the phenotypic complexity of PEX26 deficiency, we performed a combined organelle protein interaction screen and network medicine approach and 1) analyzed whether PEX26 establishes interactions with other peroxisomal proteins, 2) deciphered the PEX26 interaction network, 3) determined how PEX26 is involved in further processes of peroxisomal biogenesis and metabolism, and 4) showed how variant-specific disruption of protein-protein interactions (edgetic perturbations) may contribute to phenotypic variability in PEX26 deficient patients. The discovery of 14 novel protein-protein interactions for PEX26 revealed a hub position of PEX26 inside the peroxisomal interactome. Analysis of edgetic perturbations of PEX26 variants revealed a strong correlation between the number of affected protein-protein interactions and the molecular phenotype of matrix protein import. The role of PEX26 in peroxisomal biogenesis was expanded encompassing matrix protein import, division and proliferation, and membrane assembly. Moreover, the PEX26 interaction network intersects with cellular lipid metabolism at different steps. The results of this study expand the knowledge about the function of PEX26 and refine genotype-phenotype correlations, which may contribute to our understanding of the underlying disease mechanism of PEX26 deficiency.https://www.frontiersin.org/articles/10.3389/fgene.2021.726174/fullnetwork medicineedgetic perturbationsPEX26BRETperoxisome |
| spellingShingle | Amelie S. Lotz-Havla Mathias Woidy Philipp Guder Jessica Schmiesing Ralf Erdmann Hans R. Waterham Ania C. Muntau Søren W. Gersting Edgetic Perturbations Contribute to Phenotypic Variability in PEX26 Deficiency Frontiers in Genetics network medicine edgetic perturbations PEX26 BRET peroxisome |
| title | Edgetic Perturbations Contribute to Phenotypic Variability in PEX26 Deficiency |
| title_full | Edgetic Perturbations Contribute to Phenotypic Variability in PEX26 Deficiency |
| title_fullStr | Edgetic Perturbations Contribute to Phenotypic Variability in PEX26 Deficiency |
| title_full_unstemmed | Edgetic Perturbations Contribute to Phenotypic Variability in PEX26 Deficiency |
| title_short | Edgetic Perturbations Contribute to Phenotypic Variability in PEX26 Deficiency |
| title_sort | edgetic perturbations contribute to phenotypic variability in pex26 deficiency |
| topic | network medicine edgetic perturbations PEX26 BRET peroxisome |
| url | https://www.frontiersin.org/articles/10.3389/fgene.2021.726174/full |
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