Component
Serum and glucocorticoid-regulated kinase 1
Canonical protein; experimental species, state, expression context and nutritional dependence are specified per claim.
8 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
What it acts on
Coexpression of mouse sgk with the three ENaC subunits increased sodium current in Xenopus oocytes.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/sodium-research/10358046.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "7d53e3e8ce41bb21d5cac2a5bfe6a6abdc702d0870add9c0a002e58ac374a97b", "start_char": 0, "end_char": 1343, "text_sha256": "7d53e3e8ce41bb21d5cac2a5bfe6a6abdc702d0870add9c0a002e58ac374a97b"}
- experimental_model
- Immediate-early gene induction and channel coexpression
- exposure
- Aldosterone exposure; receptor dependence and protein-synthesis tests
- limitations
- Cell and oocyte mechanism; the study does not imply that dietary sodium directly activates SGK1 in every tissue.
- nutrient_topic
- Sodium research collection; topical membership is not evidence of a direct dietary effect. · Sodium
- organism
- Rabbit/mouse collecting-duct preparations; mouse SGK in Xenopus oocytes
- plain_language
- The kinase can increase sodium flow through ENaC.
- primary_references
- [sodium-p10358046] sgk is an aldosterone-induced kinase in the renal collecting duct. Effects on epithelial na+ channels. (1999). https://pubmed.ncbi.nlm.nih.gov/10358046/ DOI: 10.1074/jbc.274.24.16973
- tissue_or_cell_type
- Cortical collecting duct and expression system
Sodium: gradients, nutrient transport, fluid regulation and loss states (2026-09-17) · lines 408–419
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Immediate-early gene induction and channel coexpression · source_derived_draft · unverified_draft
### sodium-sgk-enac Coexpression of mouse sgk with the three ENaC subunits increased sodium current in Xenopus oocytes. Condition category: normal nutrient_topic: Sodium research collection; topical membership is not evidence of a direct dietary effect. plain_language: The kinase can increase sodium flow through ENaC. organism: Rabbit/mouse collecting-duct preparations; mouse SGK in Xenopus oocytes tissue_or_cell_type: Cortical collecting duct and expression system experimental_model: Immediate-early gene induction and channel coexpression limitations: Cell and oocyte mechanism; the study does not imply that dietary sodium directly activates SGK1 in every tissue. exposure: Aldosterone exposure; receptor dependence and protein-synthesis tests evidence_span: {"source_cache": "artifacts/sodium-research/10358046.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "7d53e3e8ce41bb21d5cac2a5bfe6a6abdc702d0870add9c0a002e58ac374a97b", "start_char": 0, "end_char": 1343, "text_sha256": "7d53e3e8ce41bb21d5cac2a5bfe6a6abdc702d0870add9c0a002e58ac374a97b"} [sodium-p10358046] sgk is an aldosterone-induced kinase in the renal collecting duct. Effects on epithelial na+ channels. (1999). https://pubmed.ncbi.nlm.nih.gov/10358046/ DOI: 10.1074/jbc.274.24.16973
Complete structured claim and evidenceThe study identified SGK1-dependent deactivation of Foxo1 in the TH17 program.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/sodium-research/23467085.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "25fdc34faa9d6f0b84dfc9daf98ecc8e09f2486853b9e99bdae552e5ca8c5b2e", "start_char": 0, "end_char": 1656, "text_sha256": "25fdc34faa9d6f0b84dfc9daf98ecc8e09f2486853b9e99bdae552e5ca8c5b2e"}
- experimental_model
- T-cell transcriptional profiling, kinase loss and experimental autoimmune assays
- exposure
- NaCl elevation and Sgk1 perturbation
- limitations
- The SGK1–Foxo1–IL23R pathway is scoped to this immune-cell program, not universal sodium action.
- nutrient_topic
- Sodium research collection; topical membership is not evidence of a direct dietary effect. · Sodium
- organism
- Mouse
- plain_language
- The same kinase family used in kidney salt handling has another role in immune cells.
- primary_references
- [sodium-p23467085] Induction of pathogenic TH17 cells by inducible salt-sensing kinase SGK1. (2013). https://pubmed.ncbi.nlm.nih.gov/23467085/ DOI: 10.1038/nature11984
- tissue_or_cell_type
- IL-23-responsive TH17 cells
Sodium: gradients, nutrient transport, fluid regulation and loss states (2026-09-17) · lines 551–562
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · T-cell transcriptional profiling, kinase loss and experimental autoimmune assays · source_derived_draft · unverified_draft
### sodium-sgk-foxo The study identified SGK1-dependent deactivation of Foxo1 in the TH17 program. Condition category: normal nutrient_topic: Sodium research collection; topical membership is not evidence of a direct dietary effect. plain_language: The same kinase family used in kidney salt handling has another role in immune cells. organism: Mouse tissue_or_cell_type: IL-23-responsive TH17 cells experimental_model: T-cell transcriptional profiling, kinase loss and experimental autoimmune assays limitations: The SGK1–Foxo1–IL23R pathway is scoped to this immune-cell program, not universal sodium action. exposure: NaCl elevation and Sgk1 perturbation evidence_span: {"source_cache": "artifacts/sodium-research/23467085.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "25fdc34faa9d6f0b84dfc9daf98ecc8e09f2486853b9e99bdae552e5ca8c5b2e", "start_char": 0, "end_char": 1656, "text_sha256": "25fdc34faa9d6f0b84dfc9daf98ecc8e09f2486853b9e99bdae552e5ca8c5b2e"} [sodium-p23467085] Induction of pathogenic TH17 cells by inducible salt-sensing kinase SGK1. (2013). https://pubmed.ncbi.nlm.nih.gov/23467085/ DOI: 10.1038/nature11984
Complete structured claim and evidenceSilencing or chemical inhibition of SGK1 blocked the high-salt enhancement of TH17 differentiation in the study.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/sodium-research/23467095.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "d16bb4b4becde85238492e01054f360aeaf57ea90015cba99459cd155fa4251f", "start_char": 0, "end_char": 1913, "text_sha256": "d16bb4b4becde85238492e01054f360aeaf57ea90015cba99459cd155fa4251f"}
- experimental_model
- Cytokine-driven T-cell culture, gene silencing/inhibition and experimental autoimmune encephalomyelitis
- exposure
- Increased NaCl in culture or high-salt mouse diet
- limitations
- NaCl exposure includes both ions and osmotic context. Mouse EAE and cultured T cells do not establish that salt causes human multiple sclerosis.
- nutrient_topic
- Sodium research collection; topical membership is not evidence of a direct dietary effect. · Sodium
- organism
- Human and mouse T cells; mouse disease model
- plain_language
- Blocking SGK1 interrupted this particular salt-sensitive immune response.
- primary_references
- [sodium-p23467095] Sodium chloride drives autoimmune disease by the induction of pathogenic TH17 cells. (2013). https://pubmed.ncbi.nlm.nih.gov/23467095/ DOI: 10.1038/nature11868
- tissue_or_cell_type
- T-helper cells and experimental CNS autoimmunity
Sodium: gradients, nutrient transport, fluid regulation and loss states (2026-09-17) · lines 525–536
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Cytokine-driven T-cell culture, gene silencing/inhibition and experimental autoimmune encephalomyelitis · source_derived_draft · unverified_draft
### sodium-th17-sgk1 Silencing or chemical inhibition of SGK1 blocked the high-salt enhancement of TH17 differentiation in the study. Condition category: normal nutrient_topic: Sodium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Blocking SGK1 interrupted this particular salt-sensitive immune response. organism: Human and mouse T cells; mouse disease model tissue_or_cell_type: T-helper cells and experimental CNS autoimmunity experimental_model: Cytokine-driven T-cell culture, gene silencing/inhibition and experimental autoimmune encephalomyelitis limitations: NaCl exposure includes both ions and osmotic context. Mouse EAE and cultured T cells do not establish that salt causes human multiple sclerosis. exposure: Increased NaCl in culture or high-salt mouse diet evidence_span: {"source_cache": "artifacts/sodium-research/23467095.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "d16bb4b4becde85238492e01054f360aeaf57ea90015cba99459cd155fa4251f", "start_char": 0, "end_char": 1913, "text_sha256": "d16bb4b4becde85238492e01054f360aeaf57ea90015cba99459cd155fa4251f"} [sodium-p23467095] Sodium chloride drives autoimmune disease by the induction of pathogenic TH17 cells. (2013). https://pubmed.ncbi.nlm.nih.gov/23467095/ DOI: 10.1038/nature11868
Complete structured claim and evidenceRenal Sgk1 deletion blunted the early increase in urinary K excretion on high-K feeding, with hyperkalemia and reduced ENaC processing.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- cross_nutrient
- Impaired ENaC sodium-channel adaptation accompanies defective K clearance.
- evidence_location
- Results Figure 2; two-day versus five-day dietary comparison.
- experimental_model
- Inducible tubular deletion; two-day high-K citrate diet
- limitations
- Excretion approached controls after longer adaptation; ROMK apical localization increased rather than decreased.
- nutrient_topic
- Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
- organism
- Mus musculus
- plain_language
- Removing kidney SGK1 impairs the initial ability to clear a potassium load.
- primary_references
- [al-qusairi-2016-renal-sgk1] Renal tubular SGK1 deficiency causes impaired K+ excretion via loss of regulation of NEDD4-2/WNK1 and ENaC (2016). https://pmc.ncbi.nlm.nih.gov/articles/PMC5005279/ DOI: 10.1152/ajprenal.00002.2016
- tissue_or_cell_type
- Kidney tubules
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 434–445
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Inducible tubular deletion; two-day high-K citrate diet · source_derived_draft · unverified_draft
### renal-sgk1-loss-impairs-high-k-excretion Renal Sgk1 deletion blunted the early increase in urinary K excretion on high-K feeding, with hyperkalemia and reduced ENaC processing. Condition category: machinery_impairment nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Removing kidney SGK1 impairs the initial ability to clear a potassium load. organism: Mus musculus tissue_or_cell_type: Kidney tubules experimental_model: Inducible tubular deletion; two-day high-K citrate diet limitations: Excretion approached controls after longer adaptation; ROMK apical localization increased rather than decreased. cross_nutrient: Impaired ENaC sodium-channel adaptation accompanies defective K clearance. evidence_location: Results Figure 2; two-day versus five-day dietary comparison. [al-qusairi-2016-renal-sgk1] Renal tubular SGK1 deficiency causes impaired K+ excretion via loss of regulation of NEDD4-2/WNK1 and ENaC (2016). https://pmc.ncbi.nlm.nih.gov/articles/PMC5005279/ DOI: 10.1152/ajprenal.00002.2016
Complete structured claim and evidenceSgk1 phosphorylated Nedd4-2 at Ser444 and less strongly Ser338 in Xenopus constructs.
Experimental context and source evidence
- cross_nutrient
- This biochemical sodium-channel pathway contributes to the machinery for K handling.
- evidence_location
- Figure 2.
- experimental_model
- Expression, kinase-dead and site-mutant experiments
- limitations
- Residue numbers are construct/species-specific; nutritional K sensing was not tested.
- nutrient_topic
- Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
- organism
- Xenopus laevis
- plain_language
- SGK1 modifies the protein that normally restrains sodium channels.
- primary_references
- [debonneville-2001-sgk-nedd4] Phosphorylation of Nedd4-2 by Sgk1 regulates epithelial Na(+) channel cell surface expression (2001). https://pubmed.ncbi.nlm.nih.gov/11742982/ DOI: 10.1093/emboj/20.24.7052
- tissue_or_cell_type
- Oocytes
Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 408–419
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Expression, kinase-dead and site-mutant experiments · source_derived_draft · unverified_draft
### renal-sgk1-phosphorylates-nedd4l Sgk1 phosphorylated Nedd4-2 at Ser444 and less strongly Ser338 in Xenopus constructs. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: SGK1 modifies the protein that normally restrains sodium channels. organism: Xenopus laevis tissue_or_cell_type: Oocytes experimental_model: Expression, kinase-dead and site-mutant experiments limitations: Residue numbers are construct/species-specific; nutritional K sensing was not tested. cross_nutrient: This biochemical sodium-channel pathway contributes to the machinery for K handling. evidence_location: Figure 2. [debonneville-2001-sgk-nedd4] Phosphorylation of Nedd4-2 by Sgk1 regulates epithelial Na(+) channel cell surface expression (2001). https://pubmed.ncbi.nlm.nih.gov/11742982/ DOI: 10.1093/emboj/20.24.7052
Complete structured claim and evidence
Where it participates (unsigned role)
Aldosterone increased collecting-duct sgk mRNA within 30 minutes through mineralocorticoid receptors without requiring new protein synthesis.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/sodium-research/10358046.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "7d53e3e8ce41bb21d5cac2a5bfe6a6abdc702d0870add9c0a002e58ac374a97b", "start_char": 0, "end_char": 1343, "text_sha256": "7d53e3e8ce41bb21d5cac2a5bfe6a6abdc702d0870add9c0a002e58ac374a97b"}
- experimental_model
- Immediate-early gene induction and channel coexpression
- exposure
- Aldosterone exposure; receptor dependence and protein-synthesis tests
- limitations
- Cell and oocyte mechanism; the study does not imply that dietary sodium directly activates SGK1 in every tissue.
- nutrient_topic
- Sodium research collection; topical membership is not evidence of a direct dietary effect. · Sodium
- organism
- Rabbit/mouse collecting-duct preparations; mouse SGK in Xenopus oocytes
- plain_language
- A hormone can quickly increase the instructions for a kinase that regulates sodium transport.
- primary_references
- [sodium-p10358046] sgk is an aldosterone-induced kinase in the renal collecting duct. Effects on epithelial na+ channels. (1999). https://pubmed.ncbi.nlm.nih.gov/10358046/ DOI: 10.1074/jbc.274.24.16973
- tissue_or_cell_type
- Cortical collecting duct and expression system
Sodium: gradients, nutrient transport, fluid regulation and loss states (2026-09-17) · lines 395–406
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Immediate-early gene induction and channel coexpression · source_derived_draft · unverified_draft
### sodium-aldosterone-sgk Aldosterone increased collecting-duct sgk mRNA within 30 minutes through mineralocorticoid receptors without requiring new protein synthesis. Condition category: normal nutrient_topic: Sodium research collection; topical membership is not evidence of a direct dietary effect. plain_language: A hormone can quickly increase the instructions for a kinase that regulates sodium transport. organism: Rabbit/mouse collecting-duct preparations; mouse SGK in Xenopus oocytes tissue_or_cell_type: Cortical collecting duct and expression system experimental_model: Immediate-early gene induction and channel coexpression limitations: Cell and oocyte mechanism; the study does not imply that dietary sodium directly activates SGK1 in every tissue. exposure: Aldosterone exposure; receptor dependence and protein-synthesis tests evidence_span: {"source_cache": "artifacts/sodium-research/10358046.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "7d53e3e8ce41bb21d5cac2a5bfe6a6abdc702d0870add9c0a002e58ac374a97b", "start_char": 0, "end_char": 1343, "text_sha256": "7d53e3e8ce41bb21d5cac2a5bfe6a6abdc702d0870add9c0a002e58ac374a97b"} [sodium-p10358046] sgk is an aldosterone-induced kinase in the renal collecting duct. Effects on epithelial na+ channels. (1999). https://pubmed.ncbi.nlm.nih.gov/10358046/ DOI: 10.1074/jbc.274.24.16973
Complete structured claim and evidenceModestly increased NaCl induced SGK1 and promoted IL-23 receptor expression in the tested T-cell program.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/sodium-research/23467085.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "25fdc34faa9d6f0b84dfc9daf98ecc8e09f2486853b9e99bdae552e5ca8c5b2e", "start_char": 0, "end_char": 1656, "text_sha256": "25fdc34faa9d6f0b84dfc9daf98ecc8e09f2486853b9e99bdae552e5ca8c5b2e"}
- experimental_model
- T-cell transcriptional profiling, kinase loss and experimental autoimmune assays
- exposure
- NaCl elevation and Sgk1 perturbation
- limitations
- The SGK1–Foxo1–IL23R pathway is scoped to this immune-cell program, not universal sodium action.
- nutrient_topic
- Sodium research collection; topical membership is not evidence of a direct dietary effect. · Sodium
- organism
- Mouse
- plain_language
- Salt exposure can reinforce responsiveness to an immune signal in this model.
- primary_references
- [sodium-p23467085] Induction of pathogenic TH17 cells by inducible salt-sensing kinase SGK1. (2013). https://pubmed.ncbi.nlm.nih.gov/23467085/ DOI: 10.1038/nature11984
- tissue_or_cell_type
- IL-23-responsive TH17 cells
Sodium: gradients, nutrient transport, fluid regulation and loss states (2026-09-17) · lines 577–588
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · T-cell transcriptional profiling, kinase loss and experimental autoimmune assays · source_derived_draft · unverified_draft
### sodium-salt-il23r Modestly increased NaCl induced SGK1 and promoted IL-23 receptor expression in the tested T-cell program. Condition category: normal nutrient_topic: Sodium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Salt exposure can reinforce responsiveness to an immune signal in this model. organism: Mouse tissue_or_cell_type: IL-23-responsive TH17 cells experimental_model: T-cell transcriptional profiling, kinase loss and experimental autoimmune assays limitations: The SGK1–Foxo1–IL23R pathway is scoped to this immune-cell program, not universal sodium action. exposure: NaCl elevation and Sgk1 perturbation evidence_span: {"source_cache": "artifacts/sodium-research/23467085.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "25fdc34faa9d6f0b84dfc9daf98ecc8e09f2486853b9e99bdae552e5ca8c5b2e", "start_char": 0, "end_char": 1656, "text_sha256": "25fdc34faa9d6f0b84dfc9daf98ecc8e09f2486853b9e99bdae552e5ca8c5b2e"} [sodium-p23467085] Induction of pathogenic TH17 cells by inducible salt-sensing kinase SGK1. (2013). https://pubmed.ncbi.nlm.nih.gov/23467085/ DOI: 10.1038/nature11984
Complete structured claim and evidenceSGK-dependent Nedd4-2 phosphorylation reduced its ENaC interaction and increased ENaC surface expression in oocytes.
Experimental context and source evidence
- cross_nutrient
- Higher sodium-channel availability can support the secretory machinery used for K balance.
- evidence_location
- Figures 3-5; interaction and anti-FLAG surface-labeling experiments.
- experimental_model
- Oocyte binding, current and surface-labeling assays
- limitations
- Molecular sufficiency does not establish exclusive control in intact kidneys.
- nutrient_topic
- Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
- organism
- Xenopus laevis
- plain_language
- Phosphorylation weakens the sodium-channel removal signal, leaving more channels at the surface.
- primary_references
- [debonneville-2001-sgk-nedd4] Phosphorylation of Nedd4-2 by Sgk1 regulates epithelial Na(+) channel cell surface expression (2001). https://pubmed.ncbi.nlm.nih.gov/11742982/ DOI: 10.1093/emboj/20.24.7052
- tissue_or_cell_type
- Oocytes
Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 421–432
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Oocyte binding, current and surface-labeling assays · source_derived_draft · unverified_draft
### renal-phospho-nedd4l-releases-enac SGK-dependent Nedd4-2 phosphorylation reduced its ENaC interaction and increased ENaC surface expression in oocytes. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Phosphorylation weakens the sodium-channel removal signal, leaving more channels at the surface. organism: Xenopus laevis tissue_or_cell_type: Oocytes experimental_model: Oocyte binding, current and surface-labeling assays limitations: Molecular sufficiency does not establish exclusive control in intact kidneys. cross_nutrient: Higher sodium-channel availability can support the secretory machinery used for K balance. evidence_location: Figures 3-5; interaction and anti-FLAG surface-labeling experiments. [debonneville-2001-sgk-nedd4] Phosphorylation of Nedd4-2 by Sgk1 regulates epithelial Na(+) channel cell surface expression (2001). https://pubmed.ncbi.nlm.nih.gov/11742982/ DOI: 10.1093/emboj/20.24.7052
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.