GO:1902031 regulation of NADP metabolic process: Redox Control, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1902031 (regulation of NADP metabolic process) is a biological_process term defined as any process that modulates the frequency, rate or extent of NADP metabolism.
• NADP and its reduced form NADPH form a central redox couple that supports biosynthesis, antioxidant defense and cellular energy metabolism.
• NADPH levels are dynamically regulated and can be monitored in living cells using genetically encoded fluorescent sensors.
• NADP(H) homeostasis intersects with NAD+ metabolism, which is increasingly recognized as a therapeutic target in aging and disease.
• Key regulatory nodes include NAD kinase, glucose-6-phosphate dehydrogenase, 6-phosphogluconate dehydrogenase, malic enzyme and isocitrate dehydrogenase, which collectively control NADPH supply.
• Dysregulation of NADP metabolism is implicated in cancer, fibrosis, oxidative stress-related pathology and metabolic disorders.
Description
GO:1902031, regulation of NADP metabolic process, is a Gene Ontology biological_process term that describes any process which modulates the frequency, rate or extent of NADP metabolism. NADP (nicotinamide adenine dinucleotide phosphate) and its reduced form NADPH constitute a major redox couple that is essential for reductive biosynthesis, antioxidant defense and cellular energy metabolism. Because NADPH is the primary electron donor for glutathione and thioredoxin systems, its production and consumption must be tightly regulated to maintain redox homeostasis. Understanding how cells regulate NADP metabolism is therefore fundamental to research on oxidative stress, cancer metabolism, fibrosis and metabolic disease. This article integrates the QuickGO definition with verified PubMed literature to provide a research-grade overview of the term, its molecular players, disease relevance and experimental approaches.
regulation of NADP metabolic process At A Glance
| GO ID | GO:1902031 |
|---|---|
| GO term | regulation of NADP metabolic process |
| Ontology | biological_process |
| Synonym | regulation of NADPH metabolic process; regulation of NADP metabolism; regulation of oxidized NADP metabolic process; regulation of reduced NADP metabolic process |
| Major function | Modulates the frequency, rate or extent of NADP metabolism, thereby influencing redox balance and reductive biosynthesis |
| Related redox couple | NADP/NADPH |
| Key regulatory enzymes | NAD kinase, glucose-6-phosphate dehydrogenase, 6-phosphogluconate dehydrogenase, malic enzyme, isocitrate dehydrogenase |
| Cellular processes affected | Antioxidant defense, lipogenesis, nucleotide biosynthesis, energy metabolism |
| Disease relevance | Cancer, fibrosis, oxidative stress-related pathologies, metabolic disorders |
What Is GO:1902031?
According to the Gene Ontology, GO:1902031 (regulation of NADP metabolic process) refers to any process that modulates the frequency, rate or extent of NADP metabolic process. In other words, it encompasses the regulatory mechanisms that control the synthesis, interconversion and utilization of NADP and NADPH, including the enzymes and signaling pathways that adjust NADP(H) levels in response to cellular needs.
Why Is regulation of NADP metabolic process Important in Cell Biology?
Regulation of NADP metabolic process is critical because NADPH provides reducing power for biosynthesis and antioxidant systems, and its imbalance contributes to oxidative stress, metabolic reprogramming and disease progression. NADP(H) also intersects with NAD+ metabolism, which is a central node in aging and age-related diseases. Therefore, understanding how cells regulate NADP metabolism offers insights into fundamental biology and potential therapeutic targets.
• Maintains redox homeostasis by supplying NADPH for glutathione and thioredoxin systems.
• Supports reductive biosynthesis of fatty acids, cholesterol and nucleotides.
• Links to NAD+ metabolism, which is implicated in aging and metabolic disease.
• Dysregulation contributes to cancer cell metabolic reprogramming.
• Plays a role in endothelial-to-mesenchymal transition and fibrosis.
• Can be monitored dynamically using genetically encoded fluorescent sensors.
• NAADP, a derivative of NADP, acts as a calcium-mobilizing second messenger.
• Provides targets for therapeutic intervention in oxidative stress-related diseases.
What Happens During regulation of NADP metabolic process?
NADP biosynthesis and interconversion
In simple terms: Cells make NADP from NAD+ by adding a phosphate group, and this step is a key point of regulation.
NADP is synthesized from NAD+ by NAD kinase, which phosphorylates the 2'-hydroxyl group of the adenosine ribose. This reaction is a major regulatory node because it determines the size of the NADP pool. NADP can be reduced to NADPH by dehydrogenases in the pentose phosphate pathway, such as glucose-6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase, as well as by malic enzyme and isocitrate dehydrogenase. The balance between NADP and NADPH is dynamically regulated in response to metabolic and oxidative signals.
NADPH production via the pentose phosphate pathway
In simple terms: The pentose phosphate pathway is a major source of NADPH, especially in cells that need reducing power for biosynthesis and antioxidant defense.
The oxidative branch of the pentose phosphate pathway generates NADPH while producing ribose-5-phosphate for nucleotide synthesis. Glucose-6-phosphate dehydrogenase (G6PD) is the rate-limiting enzyme, and its activity is regulated by the NADP/NADPH ratio. 6-phosphogluconate dehydrogenase (6PGD) also contributes to NADPH production. This pathway is particularly important in rapidly proliferating cells and in tissues exposed to oxidative stress.
NADPH consumption in reductive biosynthesis and antioxidant defense
In simple terms: NADPH is used as a currency for building molecules and for neutralizing reactive oxygen species.
NADPH provides reducing equivalents for fatty acid synthesis, cholesterol synthesis and nucleotide biosynthesis. It is also essential for regenerating reduced glutathione and thioredoxin, which protect cells from oxidative damage. The thioredoxin system, including thioredoxin h in seeds, uses NADPH to reduce disulfide bonds in target proteins. Thus, regulation of NADP metabolism directly impacts both biosynthetic capacity and antioxidant defense.
NAADP as a signaling derivative
In simple terms: NAADP is a molecule made from NADP that can trigger calcium release inside cells.
NAADP (nicotinic acid adenine dinucleotide phosphate) is synthesized from NADP and acts as a potent calcium-mobilizing second messenger. NAADP receptors mediate calcium release from acidic organelles, influencing diverse cellular processes such as fertilization, immune responses and neuronal signaling. This highlights that NADP metabolism is not only about redox but also about generating signaling molecules.
Integration with NAD+ metabolism and cellular energy status
In simple terms: NADP metabolism is connected to the broader NAD network, which senses and responds to cellular energy levels.
NADP and NAD+ pools are interconnected through NAD kinase and NADP phosphatases. NAD+ metabolism is a central regulator of energy metabolism, DNA repair and aging, and its dysregulation is linked to multiple diseases. Therefore, regulation of NADP metabolic process must be considered within the larger context of NAD(H) and NADP(H) redox couples and cellular energy metabolism.
Key Genes Involved in GO:1902031 regulation of NADP metabolic process
The following genes and proteins are key players in the regulation of NADP metabolic process, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| NADK | NAD kinase; phosphorylates NAD+ to NADP+ | Central regulator of NADP pool size |
| G6PD | Glucose-6-phosphate dehydrogenase; rate-limiting enzyme of pentose phosphate pathway | Major source of NADPH; linked to oxidative stress and cancer |
| PGD | 6-phosphogluconate dehydrogenase; produces NADPH in pentose phosphate pathway | Contributes to NADPH supply; potential target in cancer |
| ME1 | Malic enzyme 1; produces NADPH from malate | Supports lipogenesis and redox balance |
| IDH1 | Isocitrate dehydrogenase 1 (cytosolic); produces NADPH | Mutations linked to cancer and metabolic reprogramming |
| IDH2 | Isocitrate dehydrogenase 2 (mitochondrial); produces NADPH | Mitochondrial NADPH source; involved in antioxidant defense |
| PFKFB3 | 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 3; regulates glycolysis | Suppression restrains endothelial-to-mesenchymal transition and fibrosis |
| SUCLA2 | Succinyl-CoA ligase subunit; affects GLS succinylation | Coupled regulation counteracts oxidative stress in tumor cells |
| GLS | Glutaminase; generates glutamate for glutathione synthesis | Succinylation by SUCLA2 affects activity and oxidative stress response |
| TXN | Thioredoxin; reduces disulfide bonds using NADPH | Antioxidant defense; seed thioredoxin h studied in plants |
| NNT | Nicotinamide nucleotide transhydrogenase; interconverts NADH/NADPH | Mitochondrial redox balance |
| NADSYN1 | NAD synthetase 1; involved in NAD+ biosynthesis | Indirectly affects NADP pools |
| NMNAT | Nicotinamide mononucleotide adenylyltransferase; NAD+ synthesis | Links to NAD+ metabolism |
| CD38 | NAD+ glycohydrolase; consumes NAD+ | Modulates NAD+ and NADP availability |
| PARP1 | Poly(ADP-ribose) polymerase 1; consumes NAD+ | Affects NAD+ and NADP homeostasis |
| SIRT1 | NAD+-dependent deacetylase | Senses NAD+ levels; impacts metabolic regulation |
| NAADP synthase | Enzyme that synthesizes NAADP from NADP | Calcium signaling |
How Is regulation of NADP metabolic process Regulated?
Regulation of NADP metabolic process is achieved through multiple mechanisms. The NADP/NADPH ratio directly modulates the activity of key enzymes such as G6PD. Transcriptional and post-translational regulation of NAD kinase, G6PD and malic enzyme adjusts NADPH supply in response to metabolic demands. Signaling pathways such as those involving PFKFB3 and glycolysis can influence NADPH production and redox balance. Additionally, NAD+ metabolism, which is regulated by enzymes like CD38, PARP1 and SIRT1, indirectly affects NADP pools. Post-translational modifications, such as succinylation of GLS by SUCLA2, can also impact oxidative stress responses and NADPH-dependent processes.
regulation of NADP metabolic process and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| G6PD | Cancer, oxidative stress | Knockout or overexpression in cancer cell lines |
| PFKFB3 | Fibrosis, endothelial-to-mesenchymal transition | Knockdown or knockout in endothelial cells |
| SUCLA2 | Tumor oxidative stress | Knockout in tumor cell lines |
| IDH1/2 | Cancer, metabolic reprogramming | Point mutation knock-in in cell lines |
| NADK | Metabolic disorders | Knockout in metabolic cell models |
Cancer metabolism and oxidative stress
Many cancer cells reprogram metabolism to maintain high NADPH levels for biosynthesis and antioxidant defense. Suppression of PFKFB3-driven glycolysis restrains endothelial-to-mesenchymal transition and fibrotic response, linking NADPH metabolism to tumor microenvironment and fibrosis. SUCLA2-coupled regulation of GLS succinylation counteracts oxidative stress in tumor cells, highlighting a role for NADPH in cancer cell survival.
Fibrosis and endothelial-to-mesenchymal transition
PFKFB3-driven glycolysis and NADPH metabolism are involved in endothelial-to-mesenchymal transition, a process contributing to fibrosis. Targeting NADP metabolic pathways may offer therapeutic strategies for fibrotic diseases.
Neurodegeneration and aging
NAD+ metabolism, which is interconnected with NADP metabolism, declines with age and is implicated in neurodegenerative diseases. Maintaining NADPH levels supports antioxidant defense in neurons, and dysregulation may contribute to oxidative stress-related neurodegeneration.
Metabolic disorders
NADPH is essential for lipogenesis and glucose metabolism, and its dysregulation is linked to obesity, diabetes and metabolic syndrome. Understanding regulation of NADP metabolic process may reveal new therapeutic targets for metabolic disorders.
From regulation of NADP metabolic process-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of G6PD affect NADPH levels and redox balance? | G6PD knockout cell line |
| Does PFKFB3 suppression reverse endothelial-to-mesenchymal transition? | PFKFB3 knockdown or knockout in endothelial cells |
| How does SUCLA2 regulate GLS succinylation and oxidative stress? | SUCLA2 knockout tumor cells |
| What is the effect of IDH1 mutation on NADPH production? | IDH1 point mutation knock-in |
| Can NADK overexpression increase NADP levels? | NADK overexpression cell model |
| How does NAADP synthesis affect calcium signaling? | NAADP synthase knockout or overexpression |
How to Study the regulation of NADP metabolic process Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Genetically encoded NADPH sensors | Dynamic NADPH levels in live cells | Real-time redox monitoring |
| Metabolomics (LC-MS) | NADP, NADPH, NAD+, NADH concentrations | Redox profiling in knockout cells |
| CRISPR knockout screening | Genes affecting NADPH-dependent growth | Identifying metabolic vulnerabilities |
| RNA-seq | Transcriptional changes in NADP-related genes | Pathway analysis after perturbation |
| Proteomics | Protein expression and modifications | Detecting succinylation of GLS |
| Fluorescence imaging | Subcellular NADPH distribution | Live-cell imaging with sensors |
| Enzyme activity assays | Activity of G6PD, NADK, etc. | Validating metabolic changes |
| Calcium imaging | NAADP-mediated calcium release | Studying NAADP signaling |
Genetically encoded fluorescent sensors for NADPH
Genetically encoded fluorescent sensors, such as those developed by Tao et al., enable real-time monitoring of NADPH dynamics in living cells. These sensors can reveal how NADP metabolism responds to metabolic and oxidative challenges.
Metabolomics and redox profiling
Mass spectrometry-based metabolomics can quantify NADP, NADPH, NAD+ and NADH levels, providing a snapshot of redox status. This approach is useful for assessing the impact of genetic perturbations on NADP metabolism.
CRISPR screening for regulators of NADP metabolism
Genome-wide CRISPR knockout or activation screens can identify genes that regulate NADP metabolism and NADPH-dependent processes. Such screens have been used to uncover metabolic vulnerabilities in cancer cells.
Proteomics and post-translational modification analysis
Proteomic approaches can detect changes in protein succinylation, acetylation and other modifications that affect NADP-metabolizing enzymes. For example, SUCLA2-coupled regulation of GLS succinylation was identified using such methods.
How CRISPR Can Be Used to Study GO:1902031 regulation of NADP metabolic process
Knockout
CRISPR knockout of genes such as G6PD, NADK or PFKFB3 can reveal their roles in regulating NADP metabolism and downstream processes like fibrosis or oxidative stress. Knockout cell models are essential for causal inference.
Point Mutation
Point mutations in IDH1 or IDH2, which are common in cancer, can be introduced using CRISPR to study their effects on NADPH production and metabolic reprogramming. Such models help dissect the impact of specific mutations on NADP metabolism.
Knock-in
Knock-in of tagged versions of NADP-metabolizing enzymes, such as G6PD or NADK, allows for localization and interaction studies. This approach can also be used to introduce disease-associated variants.
Overexpression
CRISPR activation or overexpression of NADK or G6PD can increase NADPH levels and protect against oxidative stress. Overexpression models are useful for gain-of-function studies.
How EDITGENE Supports regulation of NADP metabolic process Research
Researchers studying regulation of NADP metabolic process-related genes often need to determine whether a candidate gene is causally involved in redox regulation, metabolic reprogramming or disease progression. EDITGENE provides comprehensive CRISPR-based services to generate precisely engineered cell models for such investigations.
Contact EDITGENE today to design your custom CRISPR model for regulation of NADP metabolic process research.
Frequently Asked Questions About regulation of NADP metabolic process
What is GO:1902031?
GO:1902031 is the Gene Ontology term for regulation of NADP metabolic process, defined as any process that modulates the frequency, rate or extent of NADP metabolism.
What is NADP metabolic process?
NADP metabolic process encompasses the synthesis, interconversion and utilization of NADP and its reduced form NADPH, which are central to redox balance and biosynthesis.
What genes are involved in regulation of NADP metabolic process?
Key genes include NADK, G6PD, PGD, ME1, IDH1, IDH2, PFKFB3, SUCLA2 and GLS, among others.
How is NADPH regulated in cells?
NADPH levels are dynamically regulated by enzymes such as G6PD, malic enzyme and isocitrate dehydrogenase, and can be monitored with genetically encoded sensors.
Why is NADP metabolism important in cancer?
Cancer cells often reprogram NADP metabolism to maintain high NADPH levels for biosynthesis and antioxidant defense, supporting proliferation and survival.
What diseases are linked to NADP metabolism?
Dysregulation of NADP metabolism is implicated in cancer, fibrosis, neurodegeneration, aging and metabolic disorders.
How can I study regulation of NADP metabolic process?
Researchers use CRISPR knockout, point mutations, fluorescent sensors, metabolomics and CRISPR screens to study this process.
What is the role of NADK in NADP metabolism?
NAD kinase (NADK) phosphorylates NAD+ to NADP+, a critical step in regulating the size of the NADP pool.
Can NADPH levels be measured in live cells?
Yes, genetically encoded fluorescent sensors allow real-time monitoring of NADPH dynamics in living cells.
What is NAADP and how is it related to NADP?
NAADP is a calcium-mobilizing second messenger synthesized from NADP, linking NADP metabolism to calcium signaling.
Conclusion
GO:1902031 (regulation of NADP metabolic process) is a fundamental biological process that controls the balance between NADP and NADPH, impacting redox homeostasis, biosynthesis and signaling. Its dysregulation is associated with cancer, fibrosis, neurodegeneration and metabolic disorders, making it a compelling area for therapeutic research. Advances in CRISPR genome editing, fluorescent sensors and metabolomics provide powerful tools to dissect the regulatory mechanisms and identify new drug targets.
References
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- 2. Xie N et al.. 2020. NAD(+) metabolism: pathophysiologic mechanisms and therapeutic potential.. Signal Transduct Target Ther 5(1):227 PMID: 33028824
- 3. Xiao W et al.. 2018. NAD(H) and NADP(H) Redox Couples and Cellular Energy Metabolism.. Antioxid Redox Signal 28(3):251-272 PMID: 28648096
- 4. Zeng H et al.. 2022. Suppression of PFKFB3-driven glycolysis restrains endothelial-to-mesenchymal transition and fibrotic response.. Signal Transduct Target Ther 7(1):303 PMID: 36045132
- 5. Tao R et al.. 2017. Genetically encoded fluorescent sensors reveal dynamic regulation of NADPH metabolism.. Nat Methods 14(7):720-728 PMID: 28581494
- 6. Galione A. 2019. NAADP Receptors.. Cold Spring Harb Perspect Biol 11(11) PMID: 31182546
- 7. Tong Y et al.. 2021. SUCLA2-coupled regulation of GLS succinylation and activity counteracts oxidative stress in tumor cells.. Mol Cell 81(11):2303-2316.e8 PMID: 33991485
- 8. Hägglund P et al.. 2016. Seed thioredoxin h.. Biochim Biophys Acta 1864(8):974-82 PMID: 26876537
