GO:0009132 nucleoside diphosphate metabolic process: Mechanism, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0009132 describes the chemical reactions and pathways involving nucleoside diphosphates, compounds consisting of a nucleobase linked to a ribose or deoxyribose sugar esterified with diphosphate [QuickGO definition].
• Nucleoside diphosphate metabolism is central to nucleotide homeostasis, nucleic acid synthesis, and cellular energy transfer [1,2].
• Nucleoside diphosphate kinases (NDPKs) catalyze the reversible transfer of a phosphate group between nucleoside triphosphates and nucleoside diphosphates, a key step in this process [5,8].
• Dysregulation of nucleoside diphosphate metabolism is implicated in cancer, viral infections, and metabolic disorders [3,8].
• Nucleoside diphosphate prodrugs are developed as antiviral and anticancer agents, highlighting therapeutic relevance [1,2,6].
• CRISPR-based models (knockout, point mutation, knock-in, overexpression) enable functional dissection of genes in this pathway [3,5].
Description
Nucleoside diphosphate metabolic process (GO:0009132) encompasses the chemical reactions and pathways involving nucleoside diphosphates, which are compounds consisting of a nucleobase linked to a deoxyribose or ribose sugar esterified with diphosphate on the sugar [QuickGO definition]. These molecules, such as ADP, GDP, CDP, UDP, and their deoxy counterparts, are pivotal intermediates in nucleotide metabolism, serving as precursors for nucleic acid synthesis and as carriers of chemical energy [1,2]. The balance between nucleoside di-, tri-, and monophosphates is maintained by a network of kinases, phosphatases, and nucleotidases, with nucleoside diphosphate kinases (NDPKs) playing a central role in phosphoryl transfer [5,8]. Understanding this process is essential for researchers in biochemistry, pharmacology, and molecular medicine. Nucleoside diphosphate analogs are widely used as antiviral and anticancer prodrugs, and their activation often depends on cellular kinases that interconvert nucleoside phosphates [1,2,6]. Moreover, mutations in enzymes involved in nucleoside diphosphate metabolism have been linked to metabolic and proliferative diseases [3,8]. Thus, GO:0009132 provides a framework for studying nucleotide homeostasis and its impact on cell physiology. Recent advances in chemoenzymatic synthesis and prodrug design have further underscored the importance of nucleoside diphosphate metabolism in drug development [4,6,7]. This article reviews the definition, mechanisms, key genes, and research methods associated with GO:0009132, with a focus on how CRISPR-based models can elucidate gene function in this pathway.
nucleoside diphosphate metabolic process At A Glance
| GO ID | GO:0009132 |
|---|---|
| GO term | nucleoside diphosphate metabolic process |
| Ontology | biological_process |
| Synonym | nucleoside diphosphate metabolism |
| Definition | The chemical reactions and pathways involving a nucleoside diphosphate, a compound consisting of a nucleobase linked to a deoxyribose or ribose sugar esterified with diphosphate on the sugar. |
| Major function | Maintenance of cellular nucleotide pools, energy transfer, and provision of precursors for nucleic acid synthesis. |
| Related enzymes | Nucleoside diphosphate kinases (NDPKs), nucleoside monophosphate kinases, nucleotidases, and phosphatases. |
| Therapeutic relevance | Target for antiviral and anticancer prodrugs; biomarker in metabolic disorders. |
What Is GO:0009132?
GO:0009132, nucleoside diphosphate metabolic process, is defined as the chemical reactions and pathways involving a nucleoside diphosphate, a compound consisting of a nucleobase linked to a deoxyribose or ribose sugar esterified with diphosphate on the sugar [QuickGO]. In simpler terms, it covers all the enzymatic steps that build, modify, or break down molecules like ADP, GDP, CDP, UDP, and dTDP, which are essential for nucleic acid synthesis and energy transfer [1,2].
Why Is nucleoside diphosphate metabolic process Important in Cell Biology?
Nucleoside diphosphate metabolism is fundamental to life because it supplies the building blocks for DNA and RNA and maintains the energy currency of the cell. Dysregulation of this process can lead to imbalanced nucleotide pools, genomic instability, and metabolic diseases [3,8]. Furthermore, many antiviral and anticancer drugs are nucleoside analogs that require phosphorylation to their diphosphate or triphosphate forms to become active, making this pathway a critical determinant of drug efficacy [1,2,6].
• Provides precursors for DNA and RNA synthesis, essential for cell proliferation [1,2].
• Maintains cellular energy homeostasis through ADP/ATP and GDP/GTP interconversion [5,8].
• Nucleoside diphosphate kinases (NDPKs) are involved in metastasis suppression and developmental processes.
• Mutations in nucleoside diphosphate metabolizing enzymes are linked to metabolic disorders and cancer [3,8].
• Nucleoside diphosphate prodrugs are developed for antiviral and anticancer therapy [1,2,6].
• Enzymes in this pathway are targets for chemotherapeutic and antiviral drug design [4,7].
• Nucleoside diphosphate metabolism influences immune cell function and islet hormone secretion.
• Chemoenzymatic synthesis of nucleoside triphosphates relies on understanding this pathway.
• Fluorescent probes for fragile histidine triad (FHIT) imaging target nucleoside diphosphate derivatives.
• CRISPR screening can identify genes that regulate nucleoside diphosphate levels and drug sensitivity [3,5].
What Happens During nucleoside diphosphate metabolic process?
Biosynthesis of nucleoside diphosphates
In simple terms: The cell builds nucleoside diphosphates from simpler precursors.
Nucleoside diphosphates are synthesized through phosphorylation of nucleoside monophosphates by nucleoside monophosphate kinases, or through de novo pathways from amino acids and sugars [1,2]. For example, ADP is formed by phosphorylation of AMP, and GDP by phosphorylation of GMP. These reactions are essential for maintaining balanced nucleotide pools.
Interconversion by nucleoside diphosphate kinases (NDPKs)
In simple terms: NDPKs shuffle phosphate groups between different nucleoside diphosphates and triphosphates.
Nucleoside diphosphate kinases (NDPKs) catalyze the reversible transfer of a phosphate group from a nucleoside triphosphate to a nucleoside diphosphate, producing a new nucleoside triphosphate and a new nucleoside diphosphate [5,8]. This ping-pong mechanism allows the cell to balance the levels of all nucleoside triphosphates, which is critical for nucleic acid synthesis and energy metabolism. NDPKs exhibit broad substrate specificity, and their activity is essential for antiviral nucleoside analog activation.
Degradation and salvage
In simple terms: Nucleoside diphosphates can be broken down or recycled.
Nucleoside diphosphates can be hydrolyzed by nucleotidases or phosphatases to nucleoside monophosphates and inorganic phosphate, or they can be salvaged by rephosphorylation [1,2]. The salvage pathway is important for recycling nucleosides derived from nucleic acid turnover, and defects in these enzymes can lead to disease.
Role in prodrug activation
In simple terms: Many drugs are converted into active forms through this pathway.
Nucleoside analog prodrugs, such as those used in antiviral and anticancer therapy, require intracellular phosphorylation to their diphosphate or triphosphate forms to inhibit viral polymerases or incorporate into nucleic acids [1,2,6]. Nucleoside diphosphate kinases and other enzymes in this pathway are therefore key determinants of drug efficacy.
Regulation by cellular energy status
In simple terms: The pathway responds to the cell's energy needs.
The interconversion of nucleoside di- and triphosphates is sensitive to the cellular energy charge, with NDPK activity helping to maintain ATP and GTP levels [5,8]. Hormonal signals, such as those involving FABP4 and nucleoside kinases, can also regulate islet function through modulation of nucleoside diphosphate metabolism.
Key Genes Involved in GO:0009132 nucleoside diphosphate metabolic process
The following genes encode enzymes and regulators directly involved in nucleoside diphosphate metabolic process (GO:0009132).
| Gene | Major Role | Research Relevance |
|---|---|---|
| NME1 (NDPK-A) | Nucleoside diphosphate kinase; transfers phosphate from ATP to NDPs | Metastasis suppressor; target in cancer research |
| NME2 (NDPK-B) | Nucleoside diphosphate kinase; broad substrate specificity | Involved in cell proliferation and differentiation |
| NME3 | Nucleoside diphosphate kinase; mitochondrial functions | Role in apoptosis and oxidative stress |
| NME4 | Nucleoside diphosphate kinase; mitochondrial | Regulates mitochondrial dynamics |
| AK1 (Adenylate kinase 1) | Interconverts adenine nucleotides | Maintains energy homeostasis in muscle |
| AK2 | Adenylate kinase 2 | Mitochondrial energy metabolism |
| CMPK1 | UMP-CMP kinase; phosphorylates CMP/UMP to CDP/UDP | Pyrimidine nucleotide synthesis |
| CMPK2 | UMP-CMP kinase 2; mitochondrial | Involved in antiviral responses |
| NME7 | Nucleoside diphosphate kinase family member | Ciliary function and development |
| NME8 | Thioredoxin-related NDPK | Sperm function and ciliary assembly |
| GUK1 | Guanylate kinase; phosphorylates GMP to GDP | Maintains GTP pools |
| DTYMK | Thymidylate kinase; phosphorylates dTMP to dTDP | DNA synthesis and antiviral drug activation |
| UCK2 | Uridine-cytidine kinase 2; phosphorylates uridine/cytidine | Prodrug activation |
| FHIT | Fragile histidine triad; hydrolyzes dinucleoside triphosphates | Tumor suppressor; target for imaging probes |
| FABP4 | Fatty acid binding protein; forms complex with nucleoside kinases | Regulates islet function and insulin secretion |
| NDPK (Aspergillus fumigatus) | Nucleoside diphosphate kinase in fungi | Antifungal target |
How Is nucleoside diphosphate metabolic process Regulated?
Nucleoside diphosphate metabolism is regulated at multiple levels. Allosteric regulation by nucleotide pools ensures balanced NTP/NDP ratios [5,8]. Hormonal signals, such as the FABP4-nucleoside kinase complex, can modulate islet function and insulin secretion. Additionally, expression of NME genes is controlled by transcription factors and microRNAs, and their activity can be post-translationally modified. In pathogenic fungi, NDPK expression is regulated during infection.
nucleoside diphosphate metabolic process and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| NME1 | Cancer metastasis | Knockout in cancer cell lines; metastasis assays |
| NME2 | Cell proliferation | Overexpression and knockout in HeLa cells |
| FABP4 | Type 2 diabetes | Knockout mice; islet function assays |
| FHIT | Tumor suppression | Knockout in lung cancer models; imaging probes |
| CMPK2 | Antiviral response | Knockout in macrophages; viral infection |
Cancer
Altered expression of NME1 (NDPK-A) is associated with tumor metastasis, and NME1 was originally identified as a metastasis suppressor. Nucleoside diphosphate metabolism also influences drug resistance to nucleoside analogs used in cancer therapy [1,2].
Viral infections
Many antiviral drugs are nucleoside analogs that require phosphorylation by cellular kinases, including NDPKs, to become active [1,2,8]. Thus, variations in nucleoside diphosphate metabolism can affect antiviral efficacy.
Metabolic disorders
The FABP4-nucleoside kinase complex regulates islet function, and dysregulation of this complex is linked to type 2 diabetes. Nucleoside diphosphate metabolism also plays a role in obesity-related metabolic dysfunction.
Neurological and developmental disorders
Mutations in NME genes have been linked to ciliary dyskinesia and developmental defects. Impaired nucleotide metabolism can affect neurodevelopment, though specific mechanisms require further study.
From nucleoside diphosphate metabolic process-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does NME1 loss promote metastasis? | NME1 knockout in MDA-MB-231 cells; xenograft |
| Does FABP4 regulate insulin secretion? | FABP4 knockout mice; islet perifusion |
| Can NDPK point mutations alter substrate specificity? | CRISPR point mutation knock-in in HEK293 |
| Does CMPK2 restrict viral replication? | CMPK2 knockout in A549 cells; viral infection |
| Does FHIT hydrolysis affect drug sensitivity? | FHIT overexpression in cancer cells; drug assays |
| Does NME7 regulate ciliary assembly? | NME7 knockout in Chlamydomonas or mammalian cells |
How to Study the nucleoside diphosphate metabolic process Process
| Method | What It Measures | Typical Application |
|---|---|---|
| NDPK coupled assay | Phosphotransferase activity | Kinetic characterization of NME enzymes |
| LC-MS metabolomics | Nucleotide pool sizes | Drug effects on NDP/NTP levels [1,2] |
| CRISPR knockout screen | Gene essentiality and drug sensitivity | Identify regulators of prodrug activation |
| Fluorescent NDP probes | Intracellular FHIT activity | Imaging nucleotide metabolism |
| Chemoenzymatic synthesis | Production of nucleoside triphosphates | Generate substrates for assays |
| Prodrug activation assays | Conversion of prodrugs to active NDPs | Evaluate antiviral/anticancer efficacy |
| Islet perifusion | Insulin secretion | Study FABP4-nucleoside kinase complex |
| Ciliary beat frequency | Ciliary function | Assess NME7/NME8 mutations |
Enzymatic assays for NDPK activity
Nucleoside diphosphate kinase activity is typically measured using coupled enzyme assays that monitor ATP formation or NADH oxidation [5,8]. These assays can determine substrate specificity and kinetic parameters.
Metabolomics and nucleotide profiling
Liquid chromatography-mass spectrometry (LC-MS) can quantify intracellular nucleoside di- and triphosphate pools, providing a snapshot of metabolic flux [1,2]. This is useful for assessing drug effects on nucleotide metabolism.
CRISPR screening
Genome-wide CRISPR knockout screens can identify genes that regulate sensitivity to nucleoside analog prodrugs, revealing new players in nucleoside diphosphate metabolism [3,5].
Fluorescence imaging with NDP probes
Hydrophobically tuned fluorescent probes bearing nucleoside diphosphates enable intracellular delivery and imaging of FHIT activity. These tools help visualize nucleotide metabolism in live cells.
How CRISPR Can Be Used to Study GO:0009132 nucleoside diphosphate metabolic process
Knockout
CRISPR knockout of NME1, NME2, or other nucleoside diphosphate metabolism genes can reveal their roles in cell proliferation, metastasis, and drug sensitivity. For example, NME1 knockout in cancer cells increases metastatic potential.
Point Mutation
Introducing point mutations in the catalytic site of NDPK or other enzymes via CRISPR can dissect substrate specificity and catalytic mechanism. Such models are valuable for studying drug resistance mutations.
Knock-in
Knock-in of tagged versions of NME genes (e.g., GFP or FLAG) allows real-time imaging and proteomic analysis of nucleoside diphosphate metabolism enzymes. Knock-in of disease-associated mutations can model human disorders.
Overexpression
CRISPR activation (CRISPRa) or lentiviral overexpression of NME1, NME2, or FHIT can test their effects on nucleotide pools and drug response. Overexpression of FHIT suppresses tumor growth in some models.
How EDITGENE Supports nucleoside diphosphate metabolic process Research
Researchers studying nucleoside diphosphate metabolic process-related genes often need to determine whether a candidate gene is causally involved in nucleotide homeostasis, drug activation, or disease progression. EDITGENE provides comprehensive CRISPR-based services to generate precisely engineered cell models for such functional studies.
Contact EDITGENE today to design your custom CRISPR model for nucleoside diphosphate metabolic process research.
Related Products
| Product name | Cat.No. | Species | Gene ID | |
|---|---|---|---|---|
| NUDT7 Knockout HEK293 Cell Line | EDJ-KQ10779 | Human | 283927 | Details Get a Quote |
| NUDT7 Knockout A-549 Cell Line | EDJ-KQ38403 | Human | 283927 | Details Get a Quote |
| NUDT7 Knockout HCT 116 Cell Line | EDJ-KQ38404 | Human | 283927 | Details Get a Quote |
| NME1 Knockout HEK293 Cell Line | EDJ-KQ50481 | Human | 4830 | Details Get a Quote |
| NME1 Knockout HeLa Cell Line | EDJ-KQ53999 | Human | 4830 | Details Get a Quote |
| NUDT7 Knockout HeLa Cell Line | EDJ-KQ59418 | Human | 283927 | Details Get a Quote |
| NME1 Knockout A-549 Cell Line | EDJ-KQ62492 | Human | 4830 | Details Get a Quote |
| NME1 Knockout HCT 116 Cell Line | EDJ-KQ70958 | Human | 4830 | Details Get a Quote |
Displaying Records 1 To 8 Of 8 Records
Frequently Asked Questions About nucleoside diphosphate metabolic process
What is nucleoside diphosphate metabolic process?
It is the set of chemical reactions and pathways involving nucleoside diphosphates, such as ADP and GDP, as defined by GO:0009132 [QuickGO].
What genes are involved in nucleoside diphosphate metabolic process?
Key genes include NME1, NME2, NME3, NME4, CMPK1, CMPK2, GUK1, DTYMK, and FHIT, among others [1,2,5].
What enzymes catalyze nucleoside diphosphate metabolism?
Nucleoside diphosphate kinases (NDPKs), nucleoside monophosphate kinases, nucleotidases, and phosphatases are the main enzymes [5,8].
How is nucleoside diphosphate metabolism regulated?
It is regulated by allosteric feedback, hormonal signals like FABP4, and transcriptional control of NME genes [3,5].
Why is nucleoside diphosphate metabolism important for drug development?
Many antiviral and anticancer prodrugs require phosphorylation to diphosphate or triphosphate forms, which depends on this pathway [1,2,6].
What diseases are linked to nucleoside diphosphate metabolism?
Cancer, viral infections, type 2 diabetes, and ciliary dyskinesia have been associated with defects in this pathway [3,5,7].
What is the role of NME1 in cancer?
NME1 (NDPK-A) was identified as a metastasis suppressor, and its loss is associated with increased metastatic potential.
How can CRISPR be used to study nucleoside diphosphate metabolism?
CRISPR knockout, point mutation, knock-in, and overexpression models allow functional dissection of genes in this pathway [3,5].
What methods measure nucleoside diphosphate levels?
LC-MS metabolomics and coupled enzyme assays are commonly used to quantify nucleoside di- and triphosphates [1,2].
What is the connection between FABP4 and nucleoside diphosphate metabolism?
FABP4 forms a hormone complex with nucleoside kinases to regulate islet function and insulin secretion.
Conclusion
GO:0009132 nucleoside diphosphate metabolic process is a fundamental biological process that maintains nucleotide homeostasis and supports nucleic acid synthesis, energy transfer, and drug activation. Its dysregulation is implicated in cancer, metabolic disorders, and viral infections. CRISPR-based models are powerful tools to dissect the roles of individual genes in this pathway, and EDITGENE offers comprehensive services to facilitate such research.
References
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- 2. Meier C et al.. 2015. Rational Development of Nucleoside Diphosphate Prodrugs: DiPPro-Compounds.. Curr Med Chem 22(34):3933-50 PMID: 26303175
- 3. Prentice KJ et al.. 2021. A hormone complex of FABP4 and nucleoside kinases regulates islet function.. Nature 600(7890):720-726 PMID: 34880500
- 4. Wu W et al.. 2004. Chemoenzymatic preparation of nucleoside triphosphates.. Curr Protoc Nucleic Acid Chem Chapter 13:Unit 13.2 PMID: 18428922
- 5. Nguyen S et al.. 2021. Nucleoside selectivity of Aspergillus fumigatus nucleoside-diphosphate kinase.. FEBS J 288(7):2398-2417 PMID: 33089641
- 6. Jia X et al.. 2020. Membrane Permeable, Bioreversibly Modified Prodrugs of Nucleoside Diphosphate-γ-Phosphonates.. J Med Chem 63(20):11990-12007 PMID: 32991174
- 7. Kawaguchi M et al.. 2022. Development of Nucleoside Diphosphate-Bearing Fragile Histidine Triad-Imaging Fluorescence Probes with Well-Tuned Hydrophobicity for Intracellular Delivery.. ACS Sens 7(9):2732-2742 PMID: 35981239
- 8. Gallois-Montbrun S et al.. 2004. Antiviral nucleoside analogs phosphorylation by nucleoside diphosphate kinase.. Mini Rev Med Chem 4(4):361-9 PMID: 15134539
