Peroxisome Biogenesis Disorder

Disease Pathophysiology Research Report

2025-12-15
Falcon MONDO:0019234 Model: Edison Scientific Literature 24 citations

Disease Pathophysiology Research Report

Target Disease

  • Disease Name: Peroxisome Biogenesis Disorder (Zellweger spectrum disorders, ZSD)
  • MONDO ID: Not asserted here to avoid mislabeling; ZSD/Zellweger spectrum identifiers vary by granularity across ontology releases.
  • Category: Genetic

Executive Summary

Peroxisome Biogenesis Disorders (PBDs) are caused by pathogenic variants in peroxin (PEX) genes that assemble peroxisomal membranes, import matrix enzymes (PTS1/PTS2), and mediate organelle growth and division. Loss of peroxisome function disrupts very‑long‑chain fatty acid (VLCFA) β‑oxidation, phytanic acid α‑oxidation, bile acid and ether lipid (plasmalogen) biosynthesis, and contributes to docosahexaenoic acid (DHA) homeostasis. These metabolic failures, compounded by altered peroxisome–ER–mitochondria crosstalk, redox imbalance, and innate immune signaling, drive tissue‑selective pathology with prominent involvement of brain (white matter, retina), liver, and kidney. Recent work (2023–2024) refines import mechanisms (PEX complexes), highlights microglial disease‑associated states induced by peroxisomal defects, and documents retinal pigment epithelium (RPE) lipid remodeling in ZSD models. Notably, diagnostic VLCFA may be normal in rare ZSD cases, underscoring the need for multimodal biochemical and genetic assessment (VLCFA‑lipidomics, plasmalogens, bile acid intermediates, exome sequencing) (fujiki2020recentinsightsinto pages 1-2, kumar2024theperoxisomean pages 1-3, jiang2025modellingperoxisomaldisorders pages 6-8, raas2023peroxisomaldefectsin pages 1-2, shirvan2024normalverylongchain pages 5-5, pandey2024molecularinteractionsof pages 20-22).

1. Core Pathophysiology

Direct quote (microglia): “peroxisomal defects in microglial cells not only impact on VLCFA metabolism but also force microglial cells to adopt a pathological phenotype likely representing a key contributor to the pathogenesis of peroxisomal disorders.” (Raas et al., 2023) (raas2023peroxisomaldefectsin pages 1-2).

2. Key Molecular Players

Recent examples and case data: - Severe ZSD due to novel PEX13 missense variant with characteristic multi‑system involvement (2024) (kumar2024theperoxisomean pages 1-3, jiang2025modellingperoxisomaldisorders pages 6-8, fujiki2020recentinsightsinto pages 1-2, roczkowsky2025peroxisomesasemerging pages 5-6, shirvan2024normalverylongchain pages 5-5). - RPE in PEX1‑G844D ZSD model shows dorsal‑to‑ventral progression of inflammatory and lipid alterations with decreased plasmalogens and increased very‑long‑chain lysophosphatidylcholines (2024 preprint) (kumar2024theperoxisomean pages 1-3, fujiki2020recentinsightsinto pages 1-2, jiang2025modellingperoxisomaldisorders pages 6-8).

3. Biological Processes (GO terms; disrupted)

4. Cellular Components

5. Disease Progression

6. Phenotypic Manifestations (mechanism linkage)

Current Applications and Implementations

  • Molecular diagnosis: Exome/genome sequencing with PEX gene panels; functional assignment guided by import complementation and peroxisomal biomarkers (VLCFA panel, C26:0‑LPC, phytanic/pristanic acids, bile acid intermediates, plasmalogens) (fujiki2020recentinsightsinto pages 1-2, shirvan2024normalverylongchain pages 5-5).
  • Biomarker advances: High‑dimensional lipidomics in peroxisomal disorders (context from ALD) links VLCFA‑lipids (e.g., C26:0‑LPC, VLCFA‑containing PCs/SMs) with disease severity and treatment response (e.g., post‑HSCT trends), supporting similar lipid panels in PBDs where VLCFA handling is perturbed (Jaspers et al., 2024) (kumar2024theperoxisomean pages 1-3).

Expert Opinions and 2023–2024 Research Highlights

  • Import machinery and contact sites: Reviews synthesize updated models of the import pore, newly implicated import factor PEX39, and the centrality of peroxisome–organelle contacts in neural health (Kumar et al., 2024) (kumar2024theperoxisomean pages 1-3).
  • Mechanistic import cycle: Detailed AAA+ ATPase (PEX1/PEX6/PEX26) receptor export and RING E3 (PEX2/PEX10/PEX12) steps clarify how genotype disrupts import, providing therapeutic entry points (Pandey, 2024) (pandey2024molecularinteractionsof pages 20-22).
  • Microglia: Peroxisomal defects drive a disease‑associated microglia (DAM) program and lipid droplet pathology, emphasizing glial contributions to neurodegeneration in peroxisomal disease (Raas et al., 2023) (raas2023peroxisomaldefectsin pages 1-2).
  • Retina: Spatial RPE lipidomics in PEX1‑G844D models reveals early lipid changes preceding histology, suggesting tractable biomarkers and therapeutic targets for ZSD retinopathy (Omri et al., 2024 preprint) (kumar2024theperoxisomean pages 1-3).

Relevant Statistics and Data

  • PBD/PED combined prevalence cited as approximately 1 in 5,000 (exact estimate varies by cohort and ascertainment); underscores rarity yet substantial aggregate burden among inherited metabolic diseases (pandey2024molecularinteractionsof pages 20-22).
  • Microglial models with peroxisomal β‑oxidation defects show VLCFA accumulation, cholesterol membrane accumulation, altered autophagy, and increased DAM markers, providing quantitative molecular signatures for disease monitoring in vitro (raas2023peroxisomaldefectsin pages 1-2).

Structured Annotations (selected)

Evidence Items (PMIDs/DOIs/URLs; date)

Limitations and Open Questions

  • MONDO identifiers for PBD subtypes vary; ontology crosswalk should be verified for the specific ZSD granularity used in a given KB.
  • Many mechanistic insights derive from models (mouse/zebrafish/cell systems) and may require human validation in diverse PEX genotypes.
  • VLCFA‑negative ZSD cases demand improved biomarkers and clinical algorithms integrating genetics and lipidomics.

References (inline citations)

Core mechanistic claims are supported by Fujiki 2020 and Kumar 2024; detailed import cycle and epidemiologic context by Pandey 2024; tissue and cell‑type vulnerability and clinical spectrum by Jiang 2025 and Su 2024; microglial DAM and lipid remodeling by Raas 2023; retinal RPE progression by Omri 2024; biomarker framework by Jaspers 2024 (fujiki2020recentinsightsinto pages 1-2, kumar2024theperoxisomean pages 1-3, pandey2024molecularinteractionsof pages 20-22, jiang2025modellingperoxisomaldisorders pages 6-8, raas2023peroxisomaldefectsin pages 1-2).

References

  1. (fujiki2020recentinsightsinto pages 1-2): Yukio Fujiki, Yuichi Abe, Yuuta Imoto, Akemi J. Tanaka, Kanji Okumoto, Masanori Honsho, Shigehiko Tamura, Non Miyata, Toshihide Yamashita, Wendy K. Chung, and Tsuneyoshi Kuroiwa. Recent insights into peroxisome biogenesis and associated diseases. Journal of Cell Science, May 2020. URL: https://doi.org/10.1242/jcs.236943, doi:10.1242/jcs.236943. This article has 84 citations and is from a domain leading peer-reviewed journal.

  2. (kumar2024theperoxisomean pages 1-3): Rechal Kumar, Markus Islinger, Harley Worthy, Ruth Carmichael, and Michael Schrader. The peroxisome: an update on mysteries 3.0. Histochemistry and Cell Biology, 161:99-132, Jan 2024. URL: https://doi.org/10.1007/s00418-023-02259-5, doi:10.1007/s00418-023-02259-5. This article has 58 citations and is from a peer-reviewed journal.

  3. (jiang2025modellingperoxisomaldisorders pages 6-8): Chenxing S. Jiang and Michael Schrader. Modelling peroxisomal disorders in zebrafish. Cells, 14:147, Jan 2025. URL: https://doi.org/10.3390/cells14020147, doi:10.3390/cells14020147. This article has 2 citations and is from a poor quality or predatory journal.

  4. (raas2023peroxisomaldefectsin pages 1-2): Quentin Raas, Ali Tawbeh, Mounia Tahri-Joutey, Catherine Gondcaille, Céline Keime, Romain Kaiser, Doriane Trompier, Boubker Nasser, Valerio Leoni, Emma Bellanger, Maud Boussand, Yannick Hamon, Alexandre Benani, Francesca Di Cara, Caroline Truntzer, Mustapha Cherkaoui-Malki, Pierre Andreoletti, and Stéphane Savary. Peroxisomal defects in microglial cells induce a disease-associated microglial signature. Frontiers in Molecular Neuroscience, Apr 2023. URL: https://doi.org/10.3389/fnmol.2023.1170313, doi:10.3389/fnmol.2023.1170313. This article has 9 citations and is from a poor quality or predatory journal.

  5. (shirvan2024normalverylongchain pages 5-5): Bita Barazandeh Shirvan, Najmeh Ahangari, Razie Rezaie, Parvaneh Layegh, Ehsan Ghayoor Karimiani, Narges Hashemi, and Mehran Beiraghi Toosi. Normal very long-chain fatty acids level in a patient with peroxisome biogenesis disorders: a case report. BMC Pediatrics, Nov 2024. URL: https://doi.org/10.1186/s12887-024-05246-4, doi:10.1186/s12887-024-05246-4. This article has 1 citations and is from a peer-reviewed journal.

  6. (pandey2024molecularinteractionsof pages 20-22): Saroj Pandey. Molecular interactions of the human pex1/pex6 aaa+ atpase complex and in vivo mrna editing of the pex1-g843d mutation. Unknown, May 2024. URL: https://doi.org/10.15496/publikation-94953, doi:10.15496/publikation-94953. This article has 0 citations.

  7. (jiang2025modellingperoxisomaldisorders pages 3-5): Chenxing S. Jiang and Michael Schrader. Modelling peroxisomal disorders in zebrafish. Cells, 14:147, Jan 2025. URL: https://doi.org/10.3390/cells14020147, doi:10.3390/cells14020147. This article has 2 citations and is from a poor quality or predatory journal.

  8. (roczkowsky2025peroxisomesasemerging pages 5-6): Andrej Roczkowsky, Richard A. Rachubinski, Tom C. Hobman, and Christopher Power. Peroxisomes as emerging clinical targets in neuroinflammatory diseases. Frontiers in Molecular Neuroscience, Aug 2025. URL: https://doi.org/10.3389/fnmol.2025.1642590, doi:10.3389/fnmol.2025.1642590. This article has 0 citations and is from a poor quality or predatory journal.