GO:0003014 renal system process: Organ System Physiology, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0003014 renal system process describes the organ system process carried out by the kidneys, ureters, bladder, urethra, sphincter muscle and associated blood vessels, maintaining fluid balance and contributing to electrolyte balance, acid/base balance and disposal of nitrogenous waste products.
• The renal system is a multi-organ system; in humans it comprises a pair of kidneys, a pair of ureters, urinary bladder, urethra, sphincter muscle and associated blood vessels, while in other species it may comprise related structures such as nephrocytes and malpighian tubules in Drosophila.
• Renal system process depends on coordinated tubular transport, redox regulation, sodium homeostasis and cellular metabolism, all of which are required for normal kidney function.
• Ageing and metabolic stress alter renal system process through molecular mechanisms including oxidative stress, mitochondrial dysfunction and altered protein homeostasis.
• Dysregulation of renal system process contributes to acute kidney injury, chronic kidney disease, electrolyte disorders and anemia of kidney disease.
• CRISPR-based knockout, point-mutation, knock-in and overexpression models enable causal testing of genes implicated in renal system process and related diseases.
Description
GO:0003014 renal system process is a Gene Ontology biological_process term that defines the organ system process carried out by any of the organs or tissues of the renal system. The renal system maintains fluid balance and contributes to electrolyte balance, acid/base balance and disposal of nitrogenous waste products. In humans, the renal system comprises a pair of kidneys, a pair of ureters, urinary bladder, urethra, sphincter muscle and associated blood vessels; in other species, the renal system may comprise related structures such as nephrocytes and malpighian tubules in Drosophila. Understanding this process is fundamental for researchers studying kidney physiology, electrolyte homeostasis and renal disease mechanisms.
renal system process At A Glance
| GO ID | GO:0003014 |
|---|---|
| GO term | renal system process |
| Ontology | biological_process |
| Synonym | excretory system process, kidney system process |
| Major function | Maintains fluid balance and contributes to electrolyte balance, acid/base balance and disposal of nitrogenous waste products |
| Organ components in humans | Pair of kidneys, pair of ureters, urinary bladder, urethra, sphincter muscle and associated blood vessels |
| Related structures in other species | Nephrocytes and malpighian tubules in Drosophila |
| Process category | Organ system process carried out by any of the organs or tissues of the renal system |
What Is GO:0003014?
The renal system process (GO:0003014) is the collection of physiological actions performed by the organs and tissues of the renal system to maintain fluid balance and contribute to electrolyte balance, acid/base balance and disposal of nitrogenous waste products. It encompasses the integrated functions of the kidneys, ureters, urinary bladder, urethra, sphincter muscle and associated blood vessels in humans, and related structures in other species. This process is synonymous with excretory system process and kidney system process.
Why Is renal system process Important in Cell Biology?
The renal system process is essential for survival because it maintains fluid balance, electrolyte balance, acid/base balance and disposal of nitrogenous waste products. Disruption of this process is central to acute kidney injury, chronic kidney disease and electrolyte disorders, and it influences outcomes in ageing and metabolic disease. Research into renal system process therefore has direct implications for understanding kidney disease mechanisms and for developing targeted therapies.
• Maintains fluid balance, which is required for normal blood pressure and tissue perfusion.
• Contributes to electrolyte balance, including sodium homeostasis, which is necessary for life.
• Contributes to acid/base balance, preventing metabolic acidosis or alkalosis.
• Enables disposal of nitrogenous waste products, preventing uremia.
• Is affected by ageing through molecular mechanisms such as oxidative stress and mitochondrial dysfunction.
• Is modulated by redox systems that regulate renal tubular transport.
• Is influenced by lactate metabolism and lactylation in kidney diseases.
• Depends on the ubiquitin-proteasome system for protein homeostasis in renal disease.
• Is relevant to clinical decision support for anemia in hemodialysis patients.
• Provides a framework for CRISPR-based functional studies of renal genes.
What Happens During renal system process?
Filtration and fluid balance
In simple terms: The kidney filters blood and adjusts water retention to keep body fluids stable.
The renal system maintains fluid balance by filtering blood and adjusting water and solute reabsorption. This process is carried out by the organs and tissues of the renal system, including the kidneys and associated blood vessels. Fluid balance is essential for normal physiology and is integrated with electrolyte balance and acid/base balance.
Electrolyte and sodium homeostasis
In simple terms: The kidney controls salt and other electrolytes so the body can function properly.
Sodium homeostasis is a balance necessary for life, and the renal system process contributes to electrolyte balance. Renal tubular transport is regulated by redox systems, which influence electrolyte handling. These mechanisms ensure that electrolyte concentrations remain within the narrow ranges required for cellular function.
Acid/base balance and nitrogenous waste disposal
In simple terms: The kidney removes acid and waste products from the blood.
The renal system process contributes to acid/base balance and disposal of nitrogenous waste products. These functions prevent the accumulation of toxic metabolites and maintain physiological pH. Disruption of these processes is associated with kidney disease and metabolic complications.
Cellular metabolism and redox regulation
In simple terms: Kidney cells use energy and manage oxidative stress to keep working.
Lactate metabolism and lactylation are involved in kidney diseases, linking cellular metabolism to renal system process. The redox system interacts with renal tubular transport, and oxidative stress can impair kidney function. Ageing kidney is characterized by molecular mechanisms including oxidative stress and mitochondrial dysfunction.
Protein homeostasis and the ubiquitin-proteasome system
In simple terms: Kidney cells recycle proteins to stay healthy.
The ubiquitin-proteasome system plays roles in renal disease, affecting protein degradation and cellular homeostasis. This system is important for maintaining the function of renal cells and for responding to stress. Dysregulation of protein homeostasis contributes to kidney injury and disease progression.
Key Genes Involved in GO:0003014 renal system process
The following genes and proteins are involved in renal system process and related physiological functions.
| Gene | Major Role | Research Relevance |
|---|---|---|
| Kallikrein (KLK1) | Renal kallikrein-kinin system | Blood pressure and electrolyte regulation |
| Bradykinin receptor (BDKRB2) | Kinin signaling in kidney | Renal hemodynamics and sodium handling |
| Sodium channels (SCNN1A, SCNN1B, SCNN1G) | Sodium reabsorption | Sodium homeostasis and hypertension |
| Na+/K+-ATPase (ATP1A1) | Tubular sodium transport | Electrolyte balance and kidney function |
| Aquaporins (AQP1, AQP2) | Water reabsorption | Fluid balance and urine concentration |
| Urea transporters (SLC14A1, SLC14A2) | Urea handling | Nitrogenous waste disposal |
| NHE3 (SLC9A3) | Sodium-hydrogen exchange | Acid/base balance and sodium homeostasis |
| Pendrin (SLC26A4) | Bicarbonate/chloride exchange | Acid/base balance |
| NBCe1 (SLC4A4) | Bicarbonate reabsorption | Acid/base balance |
| ROMK (KCNJ1) | Potassium secretion | Electrolyte balance |
| NKCC2 (SLC12A1) | Sodium-potassium-chloride cotransport | Concentrating mechanism |
| NCC (SLC12A3) | Sodium-chloride cotransport | Electrolyte homeostasis |
| ClC-Kb (CLCNKB) | Chloride transport | Electrolyte balance |
| Erythropoietin (EPO) | Red blood cell production | Anemia in kidney disease |
| HIF-2α (EPAS1) | Oxygen sensing | Erythropoiesis and kidney disease |
| Ubiquitin (UBB, UBC) | Protein degradation | Renal disease and proteostasis |
| Proteasome subunits (PSMA, PSMB) | Protein degradation | Renal disease and proteostasis |
How Is renal system process Regulated?
The renal system process is regulated by multiple molecular mechanisms. The renal kallikrein-kinin system influences renal hemodynamics and electrolyte handling. Sodium homeostasis is regulated by hormonal and tubular transport mechanisms that are necessary for life. Redox systems modulate renal tubular transport, and oxidative stress can alter kidney function. Lactate metabolism and lactylation provide metabolic regulation of kidney disease processes. The ubiquitin-proteasome system regulates protein homeostasis in renal cells and is implicated in renal disease. Ageing kidney is associated with molecular changes including oxidative stress and mitochondrial dysfunction that affect regulation of renal system process.
renal system process and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| EPO | Anemia in hemodialysis patients | Knockout or knock-in in renal cell lines |
| EPAS1 (HIF-2α) | Erythropoiesis and kidney disease | Point mutation or overexpression |
| UBB, UBC | Renal disease and proteostasis | Knockout and proteasome reporter assays |
| SCNN1A, SCNN1B, SCNN1G | Sodium homeostasis disorders | Knockout or point mutation in tubular cells |
| KLK1 | Renal kallikrein-kinin system dysfunction | Knockout and overexpression models |
Acute kidney injury and chronic kidney disease
Disruption of renal system process is central to acute kidney injury and chronic kidney disease. Ageing kidney is characterized by molecular mechanisms such as oxidative stress and mitochondrial dysfunction that contribute to disease progression. The ubiquitin-proteasome system is involved in renal disease, affecting protein homeostasis and cellular stress responses.
Electrolyte and acid/base disorders
Impaired renal system process leads to electrolyte imbalances, including sodium homeostasis disorders that are necessary for life. Redox regulation of renal tubular transport is important for maintaining electrolyte balance, and its disruption can cause tubular dysfunction. Acid/base balance is also compromised when renal system process fails.
Anemia of kidney disease
Anemia is a common complication in hemodialysis patients, and clinical decision support systems have been developed for its automated classification. Erythropoietin production by the kidney is part of renal system process, and its impairment contributes to anemia. This highlights the systemic impact of renal system process on hematological parameters.
Metabolic and lactylation-related kidney diseases
Lactate metabolism and lactylation are involved in kidney diseases, providing insights into mechanisms and therapeutic opportunities. These metabolic pathways intersect with renal system process and may represent targets for intervention. Understanding these mechanisms is important for developing new treatments.
From renal system process-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does a candidate gene regulate renal tubular transport? | Knockout cell model (e.g., CRISPR KO in renal epithelial cells) |
| Does a specific point mutation alter electrolyte handling? | Point-mutation knock-in cell model |
| Does a gene variant affect erythropoietin production? | Knock-in or overexpression model |
| Where is a protein localized in renal cells? | Tagged knock-in with fluorescent tag |
| Does overexpression of a gene protect against oxidative stress? | Overexpression cell model |
| Does a gene affect protein homeostasis in kidney disease? | Knockout and proteasome activity assays |
How to Study the renal system process Process
| Method | What It Measures | Typical Application |
|---|---|---|
| RNA sequencing | Global gene expression | Identifying renal system process genes |
| Proteomics | Protein abundance and modifications | Discovering renal disease markers |
| Transport assays | Electrolyte and fluid movement | Studying sodium homeostasis |
| Metabolomics | Lactate and metabolic intermediates | Investigating lactylation in kidney disease |
| Proteasome activity assay | Protein degradation capacity | Assessing ubiquitin-proteasome system in renal disease |
| Immunoblotting | Protein expression and modification | Detecting lactylation or ubiquitination |
| Clinical decision support systems | Anemia classification in hemodialysis | Automated classification of anemia |
Transcriptomic and proteomic profiling
RNA sequencing and proteomics can identify genes and proteins involved in renal system process. These methods measure global changes in gene expression and protein abundance in kidney cells or tissues. They are useful for discovering pathways altered in kidney disease.
Functional transport assays
Transport assays measure electrolyte and fluid movement across renal epithelial cells. These assays are used to study sodium homeostasis and tubular transport regulation. Redox-sensitive transport can be assessed by manipulating oxidative stress.
Metabolic and lactylation analysis
Lactate metabolism and lactylation can be studied using metabolomics and immunoblotting for lactylated proteins. These methods reveal how metabolic pathways influence kidney disease. They are applicable to cell and animal models of renal system process.
Protein homeostasis assays
Ubiquitin-proteasome system activity can be measured using proteasome activity assays and ubiquitin immunoblots. These methods assess protein degradation and cellular stress responses in renal disease models. They help determine the role of proteostasis in renal system process.
How CRISPR Can Be Used to Study GO:0003014 renal system process
Knockout
CRISPR knockout models are used to eliminate candidate genes involved in renal system process and assess loss-of-function effects on tubular transport, electrolyte balance and protein homeostasis. For example, knocking out ubiquitin-proteasome system components can reveal their role in renal disease. Knockout of sodium channel genes can test their contribution to sodium homeostasis.
Point Mutation
Point-mutation knock-in models introduce specific disease-associated variants to study their impact on renal system process. These models are valuable for understanding how single amino acid changes affect electrolyte transport or protein function. They can also be used to study mutations in genes related to anemia of kidney disease.
Knock-in
Knock-in models can be used to express tagged proteins for localization studies or to introduce reporter genes. Tagged knock-in of renal transporters allows visualization of their subcellular distribution in kidney cells. Knock-in of human variants can model genetic kidney disorders.
Overexpression
Overexpression models are used to study gain-of-function effects of genes involved in renal system process. Overexpressing antioxidant enzymes can test protection against oxidative stress in renal cells. Overexpression of erythropoietin or HIF-2α can model erythropoiesis regulation.
How EDITGENE Supports renal system process Research
Researchers studying renal system process-related genes often need to determine whether a candidate gene is causally involved in kidney physiology or disease. EDITGENE provides CRISPR-based cell model services to enable such functional studies.
Contact EDITGENE today to design your custom CRISPR model for renal system process research.
Related Products
| Product name | Cat.No. | Species | Gene ID | |
|---|---|---|---|---|
| AGT Knockout HEK293 Cell Line | EDJ-KQ1715 | Human | 183 | Details Get a Quote |
| CLCN5 Knockout HEK293 Cell Line | EDJ-KQ2995 | Human | 1184 | Details Get a Quote |
| LGMN Knockout HEK293 Cell Line | EDJ-KQ5551 | Human | 5641 | Details Get a Quote |
| SLC4A5 Knockout HEK293 Cell Line | EDJ-KQ15278 | Human | 57835 | Details Get a Quote |
| CLCN5 Knockout A-549 Cell Line | EDJ-KQ24186 | Human | 1184 | Details Get a Quote |
| CLCN5 Knockout HCT 116 Cell Line | EDJ-KQ24187 | Human | 1184 | Details Get a Quote |
| CLCN5 Knockout HeLa Cell Line | EDJ-KQ18239 | Human | 1184 | Details Get a Quote |
| AGT Knockout HeLa Cell Line | EDJ-KQ21553 | Human | 183 | Details Get a Quote |
| LGMN Knockout A-549 Cell Line | EDJ-KQ28816 | Human | 5641 | Details Get a Quote |
| LGMN Knockout HCT 116 Cell Line | EDJ-KQ28817 | Human | 5641 | Details Get a Quote |
| LGMN Knockout HeLa Cell Line | EDJ-KQ28818 | Human | 5641 | Details Get a Quote |
| SLC4A5 Knockout HeLa Cell Line | EDJ-KQ56927 | Human | 57835 | Details Get a Quote |
| AGT Knockout A-549 Cell Line | EDJ-KQ61058 | Human | 183 | Details Get a Quote |
| SLC4A5 Knockout A-549 Cell Line | EDJ-KQ65432 | Human | 57835 | Details Get a Quote |
| AGT Knockout HCT 116 Cell Line | EDJ-KQ69539 | Human | 183 | Details Get a Quote |
Frequently Asked Questions About renal system process
What is GO:0003014 renal system process?
GO:0003014 renal system process is a Gene Ontology biological_process term describing the organ system process carried out by the organs or tissues of the renal system, maintaining fluid balance and contributing to electrolyte balance, acid/base balance and disposal of nitrogenous waste products.
What organs are part of the renal system in humans?
In humans, the renal system comprises a pair of kidneys, a pair of ureters, urinary bladder, urethra, sphincter muscle and associated blood vessels.
What is the definition of renal system process?
It is an organ system process carried out by any of the organs or tissues of the renal system, which maintains fluid balance and contributes to electrolyte balance, acid/base balance and disposal of nitrogenous waste products.
What genes are involved in renal system process?
Genes involved include kallikrein (KLK1), sodium channels (SCNN1A, SCNN1B, SCNN1G), aquaporins (AQP1, AQP2), urea transporters (SLC14A1, SLC14A2), and erythropoietin (EPO), among others.
How is renal system process regulated?
It is regulated by the renal kallikrein-kinin system, sodium homeostasis mechanisms, redox systems, lactate metabolism and the ubiquitin-proteasome system.
What diseases are associated with renal system process dysfunction?
Dysfunction is associated with acute kidney injury, chronic kidney disease, electrolyte disorders, acid/base imbalances and anemia of kidney disease.
How can CRISPR be used to study renal system process?
CRISPR knockout, point-mutation, knock-in and overexpression models allow causal testing of genes involved in renal system process and related diseases.
What methods are used to study renal system process?
Methods include RNA sequencing, proteomics, transport assays, metabolomics, proteasome activity assays and clinical decision support systems.
What is the role of the ubiquitin-proteasome system in renal disease?
The ubiquitin-proteasome system plays roles in renal disease by regulating protein degradation and cellular homeostasis.
How does ageing affect renal system process?
Ageing kidney is associated with molecular mechanisms including oxidative stress and mitochondrial dysfunction that impair renal system process.
Conclusion
GO:0003014 renal system process is a fundamental biological process that maintains fluid balance, electrolyte balance, acid/base balance and disposal of nitrogenous waste products through the integrated function of the kidneys, ureters, bladder, urethra, sphincter muscle and associated blood vessels. Research into its molecular regulation, including redox control, sodium homeostasis, lactate metabolism and protein homeostasis, is essential for understanding kidney disease and developing new therapies. CRISPR-based cell models provide powerful tools to dissect the causal roles of genes involved in renal system process.
References
- 1. Wallace MA. 1998. Anatomy and physiology of the kidney.. AORN J 68(5):800, 803-16, 819-20; quiz 821-4 PMID: 9829131
- 2. Fang Y et al.. 2020. The ageing kidney: Molecular mechanisms and clinical implications.. Ageing Res Rev 63:101151 PMID: 32835891
- 3. Scicli AG et al.. 1986. Renal kallikrein-kinin system.. Kidney Int 29(1):120-30 PMID: 3007849
- 4. Cheng Y et al.. 2025. Lactate metabolism and lactylation in kidney diseases: insights into mechanisms and therapeutic opportunities.. Ren Fail 47(1):2469746 PMID: 40012230
- 5. Bernal A et al.. 2023. Sodium Homeostasis, a Balance Necessary for Life.. Nutrients 15(2) PMID: 36678265
- 6. Wang XL et al.. 2024. Interplay between the Redox System and Renal Tubular Transport.. Antioxidants (Basel) 13(10) PMID: 39456410
- 7. Lu D et al.. 2025. The roles of the ubiquitin-proteasome system in renal disease.. Int J Med Sci 22(8):1791-1810 PMID: 40225869
- 8. Tenorio S et al.. 2025. Knowledge-based clinical decision support system for the automated classification of anemia in hemodialysis patients.. Biomedica 45(Sp. 3):52-70 PMID: 41410330
