GO:0071953 elastic fiber: Components, Assembly and Research Methods, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0071953 elastic fiber is a supramolecular extracellular matrix assembly composed of an insoluble polymerized tropoelastin core surrounded by a microfibril mantle.
• Elastic fibers provide elasticity and recoil to tissues such as large arteries, lung, and skin, and maintain structural integrity against mechanical strain.
• Elastin is synthesized as soluble tropoelastin monomers that are secreted and crosslinked by lysyl oxidase (LOX) to form the insoluble core.
• Microfibrils, primarily composed of fibrillin-1 (FBN1) and associated proteins, template elastin deposition and contribute to signaling.
• Elastic fiber degradation and remodeling are hallmarks of aging and diseases including aortic aneurysm, Marfan syndrome, and chronic obstructive pulmonary disease.
• CRISPR-based models (knockout, point mutation, knock-in, overexpression) enable causal dissection of elastic fiber gene function in health and disease.
Description
Elastic fibers are essential extracellular matrix (ECM) structures that confer elasticity and resilience to dynamic tissues such as large arteries, lungs, and skin. The GO term GO:0071953 (elastic fiber) defines a supramolecular fiber consisting of an insoluble core of polymerized tropoelastin monomers and a surrounding mantle of microfibrils. These fibers are critical for normal organ function, and their degradation or defective assembly contributes to a wide range of human diseases. Understanding the molecular composition, assembly, and regulation of elastic fibers is therefore a major focus in connective tissue biology and cardiovascular research. Recent studies have highlighted that elastic fiber components are not merely structural but also participate in signaling that influences aging and disease progression. This article provides a research-grade overview of GO:0071953, integrating authoritative QuickGO data with verified PubMed literature to support researchers studying elastic fiber biology and related pathologies.
elastic fiber At A Glance
| GO ID | GO:0071953 |
|---|---|
| GO term | elastic fiber |
| Ontology | cellular_component |
| Synonym | elastic fibre, elastin fiber |
| Major function | Provides elasticity and recoil to tissues and maintains structural integrity against mechanical strain |
| Composition | Insoluble polymerized tropoelastin core surrounded by a microfibril mantle |
| Key proteins | Tropoelastin (ELN), fibrillin-1 (FBN1), lysyl oxidase (LOX), and associated microfibril proteins |
| Tissue distribution | Large arteries, lung, skin, and other dynamic connective tissues |
| Disease relevance | Aortic aneurysm, Marfan syndrome, aging-related arterial stiffness, and elastin degradation disorders |
What Is GO:0071953?
GO:0071953 elastic fiber is a cellular component defined as a supramolecular fiber that consists of an insoluble core of polymerized tropoelastin monomers and a surrounding mantle of microfibrils. Elastic fibers provide elasticity and recoiling to tissues and organs, and maintain structural integrity against mechanical strain. The term is synonymous with elastic fibre and elastin fiber.
Why Is elastic fiber Important in Cell Biology?
Elastic fibers are indispensable for the mechanical function of dynamic tissues, and their dysfunction is a central feature of numerous acquired and genetic diseases. Because elastic fibers are long-lived and poorly regenerated, cumulative damage contributes to aging phenotypes and cardiovascular pathology. Research on GO:0071953 therefore has broad implications for understanding tissue homeostasis, disease mechanisms, and therapeutic strategies targeting ECM remodeling.
• Elastic fibers are the primary determinants of tissue elasticity and recoil in large arteries, lungs, and skin.
• Defective elastic fiber assembly causes connective tissue disorders such as Marfan syndrome and cutis laxa.
• Elastic fiber degradation is a hallmark of aortic aneurysm and arterial aging.
• Elastin-derived peptides generated by degradation can act as signaling molecules that promote inflammation and disease progression.
• Elastic fiber components such as fibrillin-1 regulate TGF-beta signaling, linking ECM to cell signaling pathways.
• Age-associated proinflammatory remodeling of elastic fibers contributes to arterial stiffness and hypertension.
• Elastic fiber research informs tissue engineering and regenerative medicine strategies for vascular and pulmonary repair.
• CRISPR-based gene editing enables functional dissection of elastic fiber genes in model systems.
Structure and Composition of elastic fiber
Tropoelastin core assembly
In simple terms: Elastin is made as a soluble precursor that clumps together to form the stretchy core of the fiber.
Elastic fiber assembly begins with the synthesis of tropoelastin, a soluble monomer secreted by cells such as fibroblasts and smooth muscle cells. Tropoelastin monomers undergo self-association and are crosslinked by lysyl oxidase (LOX) to form an insoluble polymer core. This core provides the elastic properties of the fiber.
Microfibril mantle formation
In simple terms: A scaffold of microfibrils wraps around the elastin core and helps it form properly.
The microfibril mantle is primarily composed of fibrillin-1 (FBN1) and associated proteins such as microfibril-associated glycoproteins (MAGPs). Microfibrils serve as a template for elastin deposition and also sequester growth factors like TGF-beta, contributing to signaling. Defects in microfibril components impair elastic fiber assembly and cause connective tissue disorders.
Crosslinking and stabilization
In simple terms: Chemical crosslinks lock the elastin core together, making the fiber durable and stretchy.
Lysyl oxidase (LOX) catalyzes the oxidative deamination of lysine residues in tropoelastin, generating reactive aldehydes that form covalent crosslinks (desmosine and isodesmosine). These crosslinks stabilize the insoluble elastin polymer and are essential for its mechanical properties. Crosslinking defects lead to fragile elastic fibers and disease.
Elastic fiber heterogeneity
In simple terms: Elastic fibers can differ between tissues and even within the same tissue.
Elastic fibers exhibit structural and compositional heterogeneity across vascular beds and developmental stages. This heterogeneity influences tissue-specific mechanical properties and susceptibility to disease. Recent studies have highlighted that elastic fiber components can also generate bioactive signals that affect aging and disease.
Key Genes Involved in GO:0071953 elastic fiber
The following genes encode core structural components, crosslinking enzymes, and regulatory proteins essential for elastic fiber biology.
| Gene | Major Role | Research Relevance |
|---|---|---|
| ELN | Encodes tropoelastin, the soluble precursor of the elastin core | Mutations cause supravalvular aortic stenosis and cutis laxa; target for elastic fiber assembly studies |
| FBN1 | Encodes fibrillin-1, a major microfibril component | Mutations cause Marfan syndrome; key for microfibril biology and TGF-beta signaling |
| LOX | Encodes lysyl oxidase, which crosslinks tropoelastin | Essential for elastin crosslinking; studied in vascular aging and aneurysm |
| MFAP2 | Encodes microfibril-associated glycoprotein 1 (MAGP-1) | Contributes to microfibril structure and elastin deposition |
| MFAP5 | Encodes microfibril-associated glycoprotein 2 (MAGP-2) | Involved in microfibril assembly and cell-matrix interactions |
| LTBP1 | Latent TGF-beta binding protein 1, associates with microfibrils | Links elastic fibers to TGF-beta signaling |
| LTBP4 | Latent TGF-beta binding protein 4 | Regulates TGF-beta bioavailability in elastic fiber-rich tissues |
| FBLN5 | Fibulin-5, required for elastic fiber assembly | Mutations cause cutis laxa; critical for elastogenesis |
| EMILIN1 | Elastin microfibril interface-located protein 1 | Modulates elastic fiber assembly and cell adhesion |
| TGFB1 | Transforming growth factor beta 1, signaling molecule | Dysregulated in Marfan syndrome and elastic fiber disorders |
| TGFBR1 | TGF-beta receptor 1 | Mediates TGF-beta signaling downstream of fibrillin-1 |
| TGFBR2 | TGF-beta receptor 2 | Involved in Marfan syndrome-related signaling |
| ACTA2 | Alpha-smooth muscle actin, regulates contractility | Contributes to vascular tone and elastic fiber homeostasis |
| COL1A1 | Type I collagen, interacts with elastic fibers | Provides structural support in elastic tissues |
| COL3A1 | Type III collagen, co-distributes with elastic fibers | Mutations cause vascular Ehlers-Danlos syndrome |
| MMP2 | Matrix metalloproteinase 2, degrades elastin | Elevated in aortic aneurysm and elastic fiber degradation |
| MMP9 | Matrix metalloproteinase 9, degrades elastin | Implicated in arterial remodeling and aneurysm |
| MMP12 | Matrix metalloproteinase 12, elastolytic enzyme | Linked to pulmonary emphysema and elastic fiber destruction |
How Is elastic fiber Regulated?
Elastic fiber assembly and degradation are regulated at multiple levels. Transcriptional regulation of ELN and FBN1 is influenced by growth factors and mechanical strain. Post-translational crosslinking by LOX is tightly controlled by copper availability and enzyme activity. Proteolytic degradation by matrix metalloproteinases (MMPs) such as MMP2, MMP9, and MMP12 is a major regulatory mechanism that releases elastin-derived peptides with biological activity. In aging, proinflammatory signaling promotes elastic fiber remodeling and fragmentation. TGF-beta signaling, modulated by fibrillin-1 and latent TGF-beta binding proteins, also regulates elastic fiber homeostasis.
elastic fiber and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| FBN1 | Marfan syndrome, aortic aneurysm | Knock-in mouse models with FBN1 mutations; CRISPR point mutation in human iPSCs |
| ELN | Supravalvular aortic stenosis, cutis laxa | ELN knockout mice; CRISPR knockout in vascular smooth muscle cells |
| LOX | Aortic aneurysm, arterial stiffness | LOX knockout mice; CRISPR-mediated LOX knockout in fibroblasts |
| MMP2 | Aortic aneurysm, elastin degradation | MMP2 knockout mice; CRISPR knockout in macrophages |
| MMP12 | Pulmonary emphysema, COPD | MMP12 knockout mice; CRISPR knockout in lung epithelial cells |
Aortic aneurysm and Marfan syndrome
Elastic fiber fragmentation is a hallmark of aortic aneurysm, particularly in Marfan syndrome caused by FBN1 mutations. Loss of elastic fiber integrity leads to weakened aortic walls and progressive dilation. Dysregulated TGF-beta signaling downstream of fibrillin-1 contributes to disease pathogenesis. MMP-mediated elastin degradation further exacerbates aortic wall weakening.
Arterial aging and cardiovascular disease
Age-associated proinflammatory remodeling of elastic fibers in large arteries leads to arterial stiffening and hypertension. Elastic fiber degradation products can act as signaling molecules that promote inflammation and vascular calcification. These changes increase the risk of cardiovascular events in the elderly.
Elastin degradation in pulmonary and skin disorders
Elastolytic enzymes such as MMP12 degrade elastic fibers in chronic obstructive pulmonary disease (COPD) and emphysema. In skin, elastic fiber degeneration contributes to wrinkle formation and cutis laxa. Defective elastic fiber assembly due to mutations in ELN or FBLN5 causes cutis laxa syndromes.
From elastic fiber-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of ELN impair elastic fiber assembly? | ELN knockout (KO) in human fibroblasts or iPSCs |
| Does a specific FBN1 mutation cause Marfan syndrome phenotypes? | FBN1 point mutation knock-in in mice or human iPSCs |
| Can wild-type ELN rescue elastic fiber defects? | ELN knock-in or overexpression in ELN-deficient cells |
| How does LOX deficiency affect elastin crosslinking? | LOX knockout in vascular smooth muscle cells |
| What is the role of MMP12 in elastin degradation? | MMP12 overexpression or knockout in lung cells |
| Does fibrillin-1 regulate TGF-beta signaling? | FBN1 knockout with TGF-beta reporter assays |
How to Study the elastic fiber Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Verhoeff-Van Gieson staining | Elastic fiber content and morphology | Histological assessment of tissue sections |
| Electron microscopy | Ultrastructure of elastin core and microfibrils | Detailed structural analysis of elastic fibers |
| Desmosine quantification by mass spectrometry | Elastin crosslink content | Biomarker of elastic fiber degradation |
| RNA-seq | Expression of elastic fiber genes | Transcriptomic profiling in health and disease |
| CRISPR knockout screens | Identification of genes required for elastic fiber assembly | Functional genomics of ECM |
| Proteomics | Protein composition of elastic fibers | ECM interactome analysis |
| Immunofluorescence | Localization of elastin, fibrillin-1, and associated proteins | Cellular and tissue distribution studies |
| Multiphoton microscopy | Non-invasive imaging of elastic fibers | In vivo assessment of arterial elasticity |
Imaging elastic fibers
Elastic fibers can be visualized using histochemical stains such as Verhoeff-Van Gieson or fluorescent dyes like Alexa Fluor 488 hydrazide. Electron microscopy reveals the ultrastructure of the elastin core and microfibril mantle. Advanced imaging techniques such as multiphoton microscopy allow non-invasive assessment of elastic fibers in tissues.
Biochemical analysis of elastin crosslinks
Desmosine and isodesmosine, unique crosslinks of elastin, can be quantified by mass spectrometry or HPLC to assess elastic fiber content and degradation. Measurement of soluble tropoelastin and elastin-derived peptides in body fluids provides biomarkers of elastic fiber turnover.
Genetic and transcriptomic approaches
RNA-seq and single-cell transcriptomics can profile expression of ELN, FBN1, LOX, and other elastic fiber genes across tissues and disease states. CRISPR-based screens can identify novel regulators of elastic fiber assembly.
Proteomic and interactome analysis
Mass spectrometry-based proteomics of ECM fractions can identify components of elastic fibers and their post-translational modifications. Proximity labeling and co-immunoprecipitation reveal interactions between fibrillin-1, elastin, and associated proteins.
How CRISPR Can Be Used to Study GO:0071953 elastic fiber
Knockout
CRISPR knockout of elastic fiber genes such as ELN, FBN1, or LOX in cell models and animal models enables loss-of-function studies to determine their role in fiber assembly and tissue mechanics. Knockout models have revealed essential functions of fibrillin-1 in microfibril formation and TGF-beta regulation.
Point Mutation
CRISPR-mediated point mutations can model specific human disease variants, such as FBN1 mutations in Marfan syndrome, to study their impact on elastic fiber structure and signaling. These models help distinguish pathogenic mutations from benign polymorphisms.
Knock-in
Knock-in of tagged versions of elastin or fibrillin-1 (e.g., GFP or HA tags) allows visualization and biochemical isolation of elastic fiber components. Knock-in of disease-associated mutations provides accurate genetic models for drug testing.
Overexpression
CRISPR activation (CRISPRa) or transgenic overexpression of ELN or LOX can enhance elastic fiber formation and rescue defects in disease models. Overexpression studies help identify rate-limiting steps in elastogenesis.
How EDITGENE Supports elastic fiber Research
Researchers studying elastic fiber-related genes often need to determine whether a candidate gene is causally involved in fiber assembly, maintenance, or disease pathogenesis. EDITGENE provides comprehensive CRISPR-based services to generate precisely engineered cell and animal models, enabling functional validation of elastic fiber genes with high efficiency and reproducibility.
Contact EDITGENE today to design your custom CRISPR model for elastic fiber research.
Related Products
| Product name | Cat.No. | Species | Gene ID | |
|---|---|---|---|---|
| MFAP4 Knockout HEK293 Cell Line | EDJ-KQ234 | Human | 4239 | Details Get a Quote |
| DCN Knockout HEK293 Cell Line | EDJ-KQ374 | Human | 1634 | Details Get a Quote |
| LTBP1 Knockout HEK293 Cell Line | EDJ-KQ389 | Human | 4052 | Details Get a Quote |
| BGN Knockout HEK293 Cell Line | EDJ-KQ2119 | Human | 633 | Details Get a Quote |
| LTBP3 Knockout HEK293 Cell Line | EDJ-KQ2270 | Human | 4054 | Details Get a Quote |
| LOX Knockout HEK293 Cell Line | EDJ-KQ3160 | Human | 4015 | Details Get a Quote |
| EFEMP1 Knockout HEK293 Cell Line | EDJ-KQ3298 | Human | 2202 | Details Get a Quote |
| ELN Knockout HEK293 Cell Line | EDJ-KQ3563 | Human | 2006 | Details Get a Quote |
| COL8A2 Knockout HEK293 Cell Line | EDJ-KQ4308 | Human | 1296 | Details Get a Quote |
| COL8A1 Knockout HEK293 Cell Line | EDJ-KQ4316 | Human | 1295 | Details Get a Quote |
| FBLN1 Knockout HEK293 Cell Line | EDJ-KQ4576 | Human | 2192 | Details Get a Quote |
| FBLN2 Knockout HEK293 Cell Line | EDJ-KQ4578 | Human | 2199 | Details Get a Quote |
| LOXL1 Knockout HEK293 Cell Line | EDJ-KQ5137 | Human | 4016 | Details Get a Quote |
| LTBP2 Knockout HEK293 Cell Line | EDJ-KQ5149 | Human | 4053 | Details Get a Quote |
| TGFBI Knockout HEK293 Cell Line | EDJ-KQ5926 | Human | 7045 | Details Get a Quote |
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Frequently Asked Questions About elastic fiber
What is GO:0071953 elastic fiber?
GO:0071953 elastic fiber is a supramolecular extracellular matrix structure composed of an insoluble polymerized tropoelastin core surrounded by a microfibril mantle, providing elasticity and structural integrity to tissues.
What genes are involved in elastic fiber assembly?
Key genes include ELN (tropoelastin), FBN1 (fibrillin-1), LOX (lysyl oxidase), FBLN5 (fibulin-5), and MFAP2/MFAP5 (microfibril-associated glycoproteins).
What diseases are associated with elastic fiber defects?
Elastic fiber defects are linked to Marfan syndrome, aortic aneurysm, cutis laxa, supravalvular aortic stenosis, and age-related arterial stiffness.
How are elastic fibers formed?
Elastic fibers form through secretion of tropoelastin, self-assembly, crosslinking by lysyl oxidase, and deposition onto a microfibril scaffold primarily composed of fibrillin-1.
What is the role of fibrillin-1 in elastic fibers?
Fibrillin-1 is the major component of the microfibril mantle that templates elastin deposition and regulates TGF-beta signaling.
How does aging affect elastic fibers?
Aging promotes proinflammatory remodeling and fragmentation of elastic fibers, leading to arterial stiffening and increased cardiovascular risk.
What methods are used to study elastic fibers?
Common methods include histochemical staining, electron microscopy, desmosine quantification, RNA-seq, proteomics, and CRISPR-based gene editing.
Can CRISPR be used to model elastic fiber diseases?
Yes, CRISPR knockout, point mutation, knock-in, and overexpression models enable functional studies of elastic fiber genes and disease variants.
What is the difference between elastin and elastic fibers?
Elastin is the protein core of elastic fibers, while elastic fibers are supramolecular assemblies of elastin and microfibrils.
Why are elastic fibers important for blood vessels?
Elastic fibers allow large arteries to expand and recoil with each heartbeat, maintaining blood pressure and structural integrity.
Conclusion
GO:0071953 elastic fiber is a fundamental extracellular matrix component that provides elasticity and resilience to dynamic tissues. Its assembly, regulation, and degradation are critical in development, aging, and disease. Continued research using advanced CRISPR models and multi-omics approaches will further elucidate elastic fiber biology and inform therapeutic strategies for related disorders.
References
- 1. Halsey G et al.. 2023. Role of elastic fiber degradation in disease pathogenesis.. Biochim Biophys Acta Mol Basis Dis 1869(5):166706 PMID: 37001705
- 2. Halabi CM et al.. 2020. Vascular elastic fiber heterogeneity in health and disease.. Curr Opin Hematol 27(3):190-196 PMID: 32141894
- 3. Kim SH et al.. 2021. Age-associated proinflammatory elastic fiber remodeling in large arteries.. Mech Ageing Dev 196:111490 PMID: 33839189
- 4. Ross R. 1973. The elastic fiber.. J Histochem Cytochem 21(3):199-208 PMID: 4121415
- 5. Seeburun S et al.. 2023. Insights into elastic fiber fragmentation: Mechanisms and treatment of aortic aneurysm in Marfan syndrome.. Vascul Pharmacol 153:107215 PMID: 37640090
- 6. Wang M et al.. 2025. Unraveling Elastic Fiber-Derived Signaling in Arterial Aging and Related Arterial Diseases.. Biomolecules 15(2) PMID: 40001457
- 8. Pasquali-Ronchetti I et al.. 1997. Elastic fiber during development and aging.. Microsc Res Tech 38(4):428-35 PMID: 9297692
