Details for anatomical structure: hepatocyte
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-
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- General information
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- Hormones
- Receptors
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Synonyms
hepatocyte, parenchymal liver cell, hepatic cell, Epitheliocytus hepatisGeneral information
Cell of the liver parenchyme; the hepatocytes are responsible for almost all the functions of the liver; builds the blood-bile barrierLinks to other resources
Cytomer | cy0011233 |
Related structures
Larger structures
Substructures
Secreted hormones
-
Hormone: osteopontin
-
Hormone: complement factor B
-
Hormone: CRP
- Great quantities of serum CRP are produced by the liver during the acute phase response. [1]
-
Hormone: IL-8
- A proinflammatory cytokine gene program that includes C-X-C and C-C chemokines (IL-8, GRO-alpha, GRO-beta, GRO-gamma, ENA-78 and RANTES) and the cytokines TNF-alpha and M-CSF was upregulated in human hepatocytes after stimulation with IL-1a or TNF-alpha or bacterial invasion. In contrast, expression of hematopoietic/ lymphoid growth factors [2]
-
Hormone: HGF
- Forced HGF expression by cultured human hepatocytes had a mitogenic effect. [3]
-
Hormone: VEGF-121
- VEGF-121, VEGF-165 and VEGF-189 were detected in 14 of the 15 HCC samples and in all the corresponding non-cancerous tissue samples. [4]
-
Hormone: VEGF-189
-
Hormone: IGFBP-2
-
Hormone: IGFBP-3
-
Hormone: IGFBP-4
-
Hormone: IGFBP-1 isoform a
- Hepatocytes have been shown to express IGFBP-1 through IGFBP-4 mRNAs and release the corresponding proteins. [5]
-
Hormone: IL-1 beta
- Interleukin-1 (IL-1) is a proinflammatory cytokine that participates in the activation of the acute-phase plasma protein genes in hepatic cells during infection and injury. [6]
Influenced by:
- EGFR isoform a
in
hepatocyte
- Induced IL-1alpha release from hepatocyte is contingent on both TNF and autocrine TGF-alpha. [7]
- TNFR1
in
hepatocyte
- Induced IL-1alpha release from hepatocyte is contingent on both TNF and autocrine TGF-alpha. [7]
- TNFR2
in
hepatocyte
- Induced IL-1alpha release from hepatocyte is contingent on both TNF and autocrine TGF-alpha. [7]
-
Hormone: IL-7
-
Hormone: TGF-beta 1
- Cytokines from the TGF-beta family play a role in liver development, by induction of Vg1. [8]
- In the normal adult liver,sinusoidal endothelial cells and Kupffer cells have relatively high, constitutive levels of mRNA for TGF-beta1 and lower but detectable levels for TGF-beta2 and TGF-beta3, whereas stellate cells express very little TGF-beta in the normal state,and hepatocytes essentially none. [9]
-
Hormone: APOA1
-
Hormone: APOE
-
Hormone: apolipoprotein A-II
-
Hormone: APOC1
-
Hormone: IL-15
-
Hormone: APOC2
-
Hormone: APOC3
-
Hormone: APOA4
-
Hormone: hepcidin
- Studies in knockout mice and cell culture assays indicate that C/EBP-alpha induces and HNF4-alpha reduces hepcidin mRNA expression. [10]
- The physiological equilibrium of hepcidin is affected by different pathologies. Elevated hepcidin levels are associated with secondary iron overload, type IV hereditary hemochromatosis(HH) and chronic infectious or inflammatory diseases resulting in "anaemia of inflammation". Decreased hepcidin levels are observed during conditions of increased iron absorption such as hypoxia, iron deficiency anaemias and in HH (type l,ll,lll) and thalassemia. [10]
Influenced by:
- transferrin receptor 2 in hepatocyte
- IL-6R
in
hepatocyte
- Hepcidin mRNA expression can be induced in response to the inflammatory cytokine IL-6 (Interleukin-6). [10]
-
Hormone: apo B-100
Influenced by:
- LDL-R
in
hepatocyte
- Apolipoprotein B (apoB) is required for the hepatic assembly and secretion of very low density lipoprotein (VLDL). The LDL receptor (LDLR) promotes post-translational degradation of apoB and thereby reduces VLDL particle secretion. [11]
- LDLR directs apoB to degradation in a post-ER compartment. Furthermore, the reuptake mechanism of degradation occurs via internalization of apoB through a constitutive endocytic pathway and apoE through a ligand-dependent pathway. [11]
- Sterol O-acyltransferase 1
in
hepatocyte
- Cholesteryl esters play an important role in regulating the assembly and secretion of apoB-containing lipoproteins. [12]
- PPAR-alpha
in
hepatocyte
- The peroxisome proliferator-activated receptor (PPAR) agonist WY 14,643 increased the secretion of apolipoprotein (apo) B-100, but not that of apoB-48, and decreased triglyceride biosynthesis and secretion from primary rat hepatocytes. These effects resulted in decreased secretion of apoB-100-very low density lipoprotein (VLDL) and an increased secretion of apoB-100 on low density lipoproteins/intermediate density lipoproteins. [13]
- autocrine motility factor receptor
in
hepatocyte
- Tumor autocrine motility factor receptor, also known as gp78, is an endoplasmic reticulum (ER)-associated E3. This E3 is involved in the ER-associated degradation of nascent apoB. [14]
- LDL-R
in
hepatocyte
-
Hormone: apolipoprotein A-related gene C
-
Hormone: adipsin
-
Hormone: chondromodulin 2
-
Hormone: sNRP1
-
Hormone: APOA1(1-242)
-
Hormone: erythropoietin
-
Hormone: cardiotrophin 1
- CT-1 is up-regulated during liver regeneration and exerts potent antiapoptotic effects on hepatocytic cells. [15]
-
Hormone: RANTES
-
Hormone: GROalpha
-
Hormone: TNF-alpha
-
Hormone: M-CSF
-
Hormone: GRObeta
-
Hormone: GROgamma
-
Hormone: SCF
-
Hormone: FGF-19
Influenced by:
- bile acid receptor
in
hepatocyte
- FXR induces expression of FGF-19 in primary cultures of human hepatocytes. [17]
- bile acid receptor
in
hepatocyte
-
Hormone: VEGF-165
- VEGF protein was strongly expressed in both well-differentiated HCC cells and non-cancerous hepatocytes. [4]
-
Hormone: APOA5
- APOA5 is expressed in human hepatoma HepG2 cells with levels comparable with human primary hepatocytes. [18]
Influenced by:
- THRA1
in
hepatocyte
- Treatment with T3 significantly increased APOA5 mRNA levels at 6 h, and a 2-fold induction was achieved after 24 h of T3 addition. [18]
- THRB1 in hepatocyte
- bile acid receptor
in
hepatocyte
- Bile acids induce human apoAV promoter activity via FXR. [19]
- LXR-alpha
in
hepatocyte
- Co-transfection of SREBP-1c downregulates APOA5 promoter activity. [20]
- PPAR-alpha
in
hepatocyte
- Overexpression of PPAR-alpha enhances the activity of the human ApoA5 gene promoter. [19]
-
Hormone: angiotensinogen
Influenced by:
- angiotensin II type 1 receptor
in
hepatocyte
- Angiotensin II stimulates the hepatic synthesis and secretion of angiotensinogen, the substrate of renin. This effect is mainly related to a transient inhibition of adenylylcyclase. [22]
- angiotensin II type 1 receptor
in
hepatocyte
-
Hormone: renin
-
Hormone: cholesterol
Influenced by:
- LXR-alpha
in
hepatocyte
- Liver X receptor (LXR) alpha and beta are the nuclear receptors responsible for regulation of cholesterol metabolism. In physiological conditions, high intracellular cholesterol levels cause increased synthesis of oxysterols, which activate LXR, thus triggering a transcriptional response for cholesterol secretion and catabolism. [23]
- LXR-beta
in
hepatocyte
- Liver X receptor (LXR) alpha and beta are the nuclear receptors responsible for regulation of cholesterol metabolism. In physiological conditions, high intracellular cholesterol levels cause increased synthesis of oxysterols, which activate LXR, thus triggering a transcriptional response for cholesterol secretion and catabolism. [23]
- LXR-alpha
in
hepatocyte
-
Hormone: CBG
- CBG is secreted from hepatocytes as a 383-amino-acid peptide after cleavage of a 22-amino-acid signal peptide and circulates at concentrations ranging from 30 to 52 pg/ml. [24]
Influenced by:
- glucocorticoid receptor
in
hepatocyte
- Levels of CBG are decreased by glucocorticoids. The effects of glucocorticoids on CBG synthesis are glucocorticoid receptor dependent. [24]
- ER-alpha
in
liver
- Our results show that o,p′-DDD (mitotane) increases CBG expression and secretion by an ERα-dependent mechanism. [25]
-
Hormone: IGF-1
Influenced by:
- glucocorticoid receptor
in
hepatocyte
- IGF-1 is synthesized in hepatocytes upon GH stimulation. [26]
- glucocorticoid receptor
in
hepatocyte
-
Hormone: apo B-48
Influenced by:
- LDL-R
in
hepatocyte
- Apolipoprotein B (apoB) is required for the hepatic assembly and secretion of very low density lipoprotein (VLDL). The LDL receptor (LDLR) promotes post-translational degradation of apoB and thereby reduces VLDL particle secretion. [11]
- LDLR directs apoB to degradation in a post-ER compartment. Furthermore, the reuptake mechanism of degradation occurs via internalization of apoB through a constitutive endocytic pathway and apoE through a ligand-dependent pathway. [11]
- Sterol O-acyltransferase 1
in
hepatocyte
- Cholesteryl esters play an important role in regulating the assembly and secretion of apoB-containing lipoproteins. [12]
- LDL-R
in
hepatocyte
-
Hormone: Dynamin-2
-
Hormone: TGF-alpha
Influenced by:
- TNFR1
in
hepatocyte
- In primary hepatocyte cultures, TNF not only potentiates growth factor-stimulated proliferation, but acts as a mitogen itself through the induced release of autocrine transforming growth factor- (TGF-) and its activation of serine-threonine protein kinase B (PKB)/Akt and extracellular signal-regulated kinase (ERK). [7]
- TNFR2
in
hepatocyte
- In primary hepatocyte cultures, TNF not only potentiates growth factor-stimulated proliferation, but acts as a mitogen itself through the induced release of autocrine transforming growth factor- (TGF-) and its activation of serine-threonine protein kinase B (PKB)/Akt and extracellular signal-regulated kinase (ERK). [7]
- TNFR1
in
hepatocyte
-
Hormone: IL-1 alpha
Influenced by:
- EGFR isoform a
in
hepatocyte
- Induced IL-1alpha release from hepatocyte is contingent on both TNF and autocrine TGF-alpha. [7]
- TNFR1
in
hepatocyte
- Induced IL-1alpha release from hepatocyte is contingent on both TNF and autocrine TGF-alpha. [7]
- TNFR2
in
hepatocyte
- Induced IL-1alpha release from hepatocyte is contingent on both TNF and autocrine TGF-alpha. [7]
- EGFR isoform a
in
hepatocyte
-
Hormone: IL-1RA
Influenced by:
- TNFR1
in
hepatocyte
- TNF induces the release of IL-1ra. [7]
- TNFR2
in
hepatocyte
- TNF induces the release of IL-1ra. [7]
- TNFR1
in
hepatocyte
-
Hormone: fetuin-A
- Ahsg (fetuin-A) is a 55-59kDa phosphorylated glycoprotein synthesized in the adult predominantly by hepatocytes, from which it enters the circulation. [27]
-
Hormone: fibrinogen
Influenced by:
- IL-6R
in
hepatocyte
- We determined the role of IL-6-receptor-gp130-Stat3 signaling in IL-6 activation of the ÎłFBG promoter in liver and lung epithelial cells. [28]
- IL-6R
in
hepatocyte
Receptors
-
Receptor: LXR-beta
Influences:
- cholesterol
- Liver X receptor (LXR) alpha and beta are the nuclear receptors responsible for regulation of cholesterol metabolism. In physiological conditions, high intracellular cholesterol levels cause increased synthesis of oxysterols, which activate LXR, thus triggering a transcriptional response for cholesterol secretion and catabolism. [23]
- cholesterol
-
Receptor: H1
-
Receptor: H2
-
Receptor: histamine H4 receptor
-
Receptor: ferroportin-1
-
Receptor: transferrin receptor 2
Influences:
-
Receptor: IL-6R
Influences:
- hepcidin
- Hepcidin mRNA expression can be induced in response to the inflammatory cytokine IL-6 (Interleukin-6). [10]
- SAA1
- fibrinogen
- We determined the role of IL-6-receptor-gp130-Stat3 signaling in IL-6 activation of the ÎłFBG promoter in liver and lung epithelial cells. [28]
- hepcidin
-
Receptor: transferrin receptor 1
Induced phenotype:
- regulation of iron ion transmembrane transport
- Absorbed iron is bound to circulating transferrin and passes initially through the portal system of the liver, which is the major site of iron storage. Hepatocytes take up transferrin-bound iron via the classical transferrin receptor (TfR1) but likely in greater amounts by the homologous protein, TfR2. [29]
- regulation of iron ion transmembrane transport
-
Receptor: RXR-alpha
-
Receptor: SR-BI
-
Receptor: BMP receptor type II
-
Receptor: hepatocyte growth factor receptor
-
Receptor: CAR
-
Receptor: glucocorticoid receptor
Influences:
-
Receptor: VDR
- VDR protein and mRNA were identified in primary human hepatocytes. [30]
Induced phenotype:
- negative regulation of bile acid biosynthetic process
- Lithocholic acid acetate or 1α, 25-dihydroxy-vitamin D3-activated VDR strongly inhibites cholesterol 7α-hydroxylase mRNA expression and reduces bile acid synthesis in human hepatocytes. [30]
-
Receptor: PPAR-alpha
- PPARα is expressed at high levels in organs that carry out significant catabolism of fatty acids such as the brown adipose tissue, liver, heart, kidney, and intestine [31]
Influences:
- APOA5
- Overexpression of PPAR-alpha enhances the activity of the human ApoA5 gene promoter. [19]
- apo B-100
- The peroxisome proliferator-activated receptor (PPAR) agonist WY 14,643 increased the secretion of apolipoprotein (apo) B-100, but not that of apoB-48, and decreased triglyceride biosynthesis and secretion from primary rat hepatocytes. These effects resulted in decreased secretion of apoB-100-very low density lipoprotein (VLDL) and an increased secretion of apoB-100 on low density lipoproteins/intermediate density lipoproteins. [13]
-
Receptor: TNFR1
Induced phenotype:
- antagonizing IL-1alpha/beta ligand activity
- TNF induces the release of IL-1ra, which antagonizes IL-1alpha/beta ligand activity. [7]
- positive regulation of apoptosis
- positive regulation of cell proliferation
- TNF-induced autocrine TGF- and IL-1alpha/beta contribute to multiple intracellular signaling pathways that govern hepatocyte proliferation. [7]
- 101 Autocrine TGF-alpha regulates pro-proliferative/antiapoptotic signaling through the ERK and, in the absence of Adenoviral infection, Akt pathways. 2452 [32]
Influences:
- TGF-alpha
- In primary hepatocyte cultures, TNF not only potentiates growth factor-stimulated proliferation, but acts as a mitogen itself through the induced release of autocrine transforming growth factor- (TGF-) and its activation of serine-threonine protein kinase B (PKB)/Akt and extracellular signal-regulated kinase (ERK). [7]
- IL-1 alpha
- Induced IL-1alpha release from hepatocyte is contingent on both TNF and autocrine TGF-alpha. [7]
- IL-1 beta
- Induced IL-1alpha release from hepatocyte is contingent on both TNF and autocrine TGF-alpha. [7]
- IL-1RA
- TNF induces the release of IL-1ra. [7]
- antagonizing IL-1alpha/beta ligand activity
-
Receptor: fas receptor
-
Receptor: EGFR isoform a
Influences:
- IL-1 alpha
- Induced IL-1alpha release from hepatocyte is contingent on both TNF and autocrine TGF-alpha. [7]
- IL-1 beta
- Induced IL-1alpha release from hepatocyte is contingent on both TNF and autocrine TGF-alpha. [7]
- IL-1 alpha
-
Receptor: RXR-beta
-
Receptor: LXR-alpha
Influences:
- APOA5
- Co-transfection of SREBP-1c downregulates APOA5 promoter activity. [20]
- cholesterol
- Liver X receptor (LXR) alpha and beta are the nuclear receptors responsible for regulation of cholesterol metabolism. In physiological conditions, high intracellular cholesterol levels cause increased synthesis of oxysterols, which activate LXR, thus triggering a transcriptional response for cholesterol secretion and catabolism. [23]
- APOA5
-
Receptor: growth hormone receptor
-
Receptor: bile acid receptor
Influences:
-
Receptor: PXR
-
Receptor: FGFR-4
-
Receptor: LRP5
-
Receptor: THRB1
Influences:
-
Receptor: THRA1
Influences:
-
Receptor: LDL-R
Influences:
- apo B-48
- Apolipoprotein B (apoB) is required for the hepatic assembly and secretion of very low density lipoprotein (VLDL). The LDL receptor (LDLR) promotes post-translational degradation of apoB and thereby reduces VLDL particle secretion. [11]
- LDLR directs apoB to degradation in a post-ER compartment. Furthermore, the reuptake mechanism of degradation occurs via internalization of apoB through a constitutive endocytic pathway and apoE through a ligand-dependent pathway. [11]
- apo B-100
- Apolipoprotein B (apoB) is required for the hepatic assembly and secretion of very low density lipoprotein (VLDL). The LDL receptor (LDLR) promotes post-translational degradation of apoB and thereby reduces VLDL particle secretion. [11]
- LDLR directs apoB to degradation in a post-ER compartment. Furthermore, the reuptake mechanism of degradation occurs via internalization of apoB through a constitutive endocytic pathway and apoE through a ligand-dependent pathway. [11]
- apo B-48
-
Receptor: angiotensin receptor 2
-
Receptor: angiotensin II type 1 receptor
Influences:
- angiotensinogen
- Angiotensin II stimulates the hepatic synthesis and secretion of angiotensinogen, the substrate of renin. This effect is mainly related to a transient inhibition of adenylylcyclase. [22]
- angiotensinogen
-
Receptor: VPAC1
Induced phenotype:
- regulation of cell proliferation
- The fact that VIP exerts a mitogenic action on rat hepatocytes strongly suggests that PACAP could be also involved in the control of liver cell proliferation via stimulation of adenylate cyclase. [34]
- regulation of cell proliferation
-
Receptor: GL-R
Induced phenotype:
- glycogenolysis
- Glucagon stimulates glycogenolysis in liver, resulting in elevation of plasma glucose. [35]
- gluconeogenesis
- Glucagon stimulates gluconeogenesis in liver, resulting in elevation of plasma glucose. [35]
- maintainence of serum glucose concentration
- Glucagon has a critical role in maintaining serum glucose concentration. [35]
- glycogenolysis
-
Receptor: V1a
-
Receptor: Sterol O-acyltransferase 1
Influences:
-
Receptor: autocrine motility factor receptor
Influences:
-
Receptor: TNFR2
Induced phenotype:
- antagonizing IL-1alpha/beta ligand activity
- TNF induces the release of IL-1ra, which antagonizes IL-1alpha/beta ligand activity. [7]
- positive regulation of cell proliferation
- positive regulation of apoptosis
Influences:
- TGF-alpha
- In primary hepatocyte cultures, TNF not only potentiates growth factor-stimulated proliferation, but acts as a mitogen itself through the induced release of autocrine transforming growth factor- (TGF-) and its activation of serine-threonine protein kinase B (PKB)/Akt and extracellular signal-regulated kinase (ERK). [7]
- IL-1 beta
- Induced IL-1alpha release from hepatocyte is contingent on both TNF and autocrine TGF-alpha. [7]
- IL-1 alpha
- Induced IL-1alpha release from hepatocyte is contingent on both TNF and autocrine TGF-alpha. [7]
- IL-1RA
- TNF induces the release of IL-1ra. [7]
- antagonizing IL-1alpha/beta ligand activity
-
Receptor: PLXNB1
-
Receptor: leptin receptor
Induced phenotype:
- negative regulation of insulin receptor signaling pathway
- Exposure of hepatic cells to leptin, at concentrations comparable with those present in obese individuals, caused attenuation of several insulin-induced activities, including tyrosine phosphorylation of the insulin receptor substrate-1 (IRS-1), association of the adapter molecule growth factor receptor-bound protein 2 with IRS-1, and down-regulation of gluconeogenesis. In contrast, leptin increased the activity of IRS-1-associated phosphatidylinositol 3-kinase. These in vitro studies raise the possibility that leptin modulates insulin activities in obese individuals. [36]
- negative regulation of insulin receptor signaling pathway
-
Receptor: PRLR
Induced phenotype:
- increase in glycogen phosphorylase-a activation
- PRL at physiological concentrations produced a 4-fold increase in glycogen phosphorylase-a activation in isolated hepatocytes. [37]
- positive regulation of cell proliferation
- PRL plays an important role in the turnover of hepatocytes. There was a striking increase in the number of mitotic figures in livers of transgenic mice expressing hGH, which binds equally well to PRL and GH receptors. [38]
- increase in glycogen phosphorylase-a activation