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fredag 22 mars 2024

Notch-signalointi rintasyövässä? Onko terapeuttisia optioita tällä saralla?

 

. 2024 Jan 3;26(1):4.
doi: 10.1186/s13058-023-01757-7.

Identification of a Notch transcriptomic signature for breast cancer

Affiliations
Abstract

Background: Dysregulated Notch signalling contributes to breast cancer development and progression, but validated tools to measure the level of Notch signalling in breast cancer subtypes and in response to systemic therapy are largely lacking. A transcriptomic signature of Notch signalling would be warranted, for example to monitor the effects of future Notch-targeting therapies and to learn whether altered Notch signalling is an off-target effect of current breast cancer therapies. In this report, we have established such a classifier.

Methods: To generate the signature, we first identified Notch-regulated genes from six basal-like breast cancer cell lines subjected to elevated or reduced Notch signalling by culturing on immobilized Notch ligand Jagged1 or blockade of Notch by γ-secretase inhibitors, respectively. From this cadre of Notch-regulated genes, we developed candidate transcriptomic signatures that were trained on a breast cancer patient dataset (the TCGA-BRCA cohort) and a broader breast cancer cell line cohort and sought to validate in independent datasets.

Results: An optimal 20-gene transcriptomic signature was selected. We validated the signature on two independent patient datasets (METABRIC and Oslo2), and it showed an improved coherence score and tumour specificity compared with previously published signatures. Furthermore, the signature score was particularly high for basal-like breast cancer, indicating an enhanced level of Notch signalling in this subtype. The signature score was increased after neoadjuvant treatment in the PROMIX and BEAUTY patient cohorts, and a lower signature score generally correlated with better clinical outcome.

Conclusions: The 20-gene transcriptional signature will be a valuable tool to evaluate the response of future Notch-targeting therapies for breast cancer, to learn about potential effects on Notch signalling from conventional breast cancer therapies and to better stratify patients for therapy considerations.

Keywords: Basal-like; Breast cancer; Breast cancer stem cell; Diagnostics; Notch signalling; Therapy; Therapy resistance; Transcriptomic signature; Triple-negative

 

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10765899/

torsdag 21 mars 2024

Notch signaloinnin kaavakuvia viime vuodelta 2023 . Sars-Cov-2 virus näyttää liikkuvan Notch-järjestelmänkin molekyylimiljöössä, panoraamassa.

 https://www.frontiersin.org/journals/neuroscience/articles/10.3389/fnins.2023.1179011/full

 

NOTCH signaling in COVID-19: a central hub controlling genes, proteins, and cells that mediate SARS-CoV-2 entry, the inflammatory response, and lung regeneration.

Baindara P, Sarker MB, Earhart AP, Mandal SM, Schrum AG. Front Cell Infect Microbiol. 2022 Aug 4;12:928704. doi: 10.3389/fcimb.2022.928704. eCollection 2022. PMID: 35992174 Free PMC article.
In the lungs of infected individuals, the downstream molecular signaling pathways induced by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) are incompletely understood. ...A pathway involving NOTCH signaling, furin, ADAM17, …
 
. 2022 Aug 4:12:928704.
doi: 10.3389/fcimb.2022.928704. eCollection 2022.

NOTCH signaling in COVID-19: a central hub controlling genes, proteins, and cells that mediate SARS-CoV-2 entry, the inflammatory response, and lung regeneration

Affiliations
Abstract

In the lungs of infected individuals, the downstream molecular signaling pathways induced by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) are incompletely understood. Here, we describe and examine predictions of a model in which NOTCH may represent a central signaling axis in lung infection in Coronavirus Disease 2019 (COVID-19). A pathway involving NOTCH signaling, furin, ADAM17, and ACE2 may be capable of increasing SARS-CoV-2 viral entry and infection. NOTCH signaling can also upregulate IL-6 and pro-inflammatory mediators induced to hyperactivation in COVID-19. Furthermore, if NOTCH signaling fails to turn down properly and stays elevated, airway regeneration during lung healing can be inhibited-a process that may be at play in COVID-19. With specific NOTCH inhibitor drugs in development and clinical trials for other diseases being conducted, the roles of NOTCH in all of these processes central to both infection and healing merit contemplation if such drugs might be applied to COVID-19 patients.

Keywords: ACE2; ADAM; COVID-19; Notch; SARS-CoV-2; furin; gamma-secretase inhibitor (GSI).

. 2023 Feb 10;15(2):496.
doi: 10.3390/v15020496.

Altered microRNA Transcriptome in Cultured Human Airway Cells upon Infection with SARS-CoV-2

Affiliations
Abstract

Numerous proteomic and transcriptomic studies have been carried out to better understand the current multi-variant SARS-CoV-2 virus mechanisms of action and effects. However, they are mostly centered on mRNAs and proteins. The effect of the virus on human post-transcriptional regulatory agents such as microRNAs (miRNAs), which are involved in the regulation of 60% of human gene activity, remains poorly explored. Similar to research we have previously undertaken with other viruses such as Ebola and HIV, in this study we investigated the miRNA profile of lung epithelial cells following infection with SARS-CoV-2. At the 24 and 72 h post-infection time points, SARS-CoV-2 did not drastically alter the miRNome. About 90% of the miRNAs remained non-differentially expressed. The results revealed that miR-1246, miR-1290 and miR-4728-5p were the most upregulated over time. miR-196b-5p and miR-196a-5p were the most downregulated at 24 h, whereas at 72 h, miR-3924, miR-30e-5p and miR-145-3p showed the highest level of downregulation. In the top significantly enriched KEGG pathways of genes targeted by differentially expressed miRNAs we found, among others, MAPK, RAS, P13K-Akt and renin secretion signaling pathways. Using RT-qPCR, we also showed that SARS-CoV-2 may regulate several predicted host mRNA targets involved in the entry of the virus into host cells (ACE2, TMPRSS2, ADAM17, FURIN), renin-angiotensin system (RAS) (Renin, Angiotensinogen, ACE), innate immune response (IL-6, IFN1β, CXCL10, SOCS4) and fundamental cellular processes (AKT, NOTCH, WNT). Finally, we demonstrated by dual-luciferase assay a direct interaction between miR-1246 and ACE-2 mRNA. This study highlights the modulatory role of miRNAs in the pathogenesis of SARS-CoV-2.

 

 

NOTCH signalointitien geeneistä ja proteiineista NOTCH1(9q34.3), Neurogenic locus notch homolog protein 1

 PubMed  Search

 NOTCH1 (9q34.3) , NOTCH reseptori 1

https://www.ncbi.nlm.nih.gov/gene/4851#gene-expression

Also known as
hN1; AOS5; TAN1; AOVD1
Summary
This gene encodes a member of the NOTCH family of proteins. Members of this Type I transmembrane protein family share structural characteristics including an extracellular domain consisting of multiple epidermal growth factor-like (EGF) repeats, and an intracellular domain consisting of multiple different domain types. Notch signaling is an evolutionarily conserved intercellular signaling pathway that regulates interactions between physically adjacent cells through binding of Notch family receptors to their cognate ligands. The encoded preproprotein is proteolytically processed in the trans-Golgi network to generate two polypeptide chains that heterodimerize to form the mature cell-surface receptor. This receptor plays a role in the development of numerous cell and tissue types. Mutations in this gene are associated with aortic valve disease, Adams-Oliver syndrome, T-cell acute lymphoblastic leukemia, chronic lymphocytic leukemia, and head and neck squamous cell carcinoma. [provided by RefSeq, Jan 2016]
Expression
Ubiquitous expression in fat (RPKM 9.4), spleen (RPKM 9.4) and 25 other tissues See more

 GENECARDS: NOTCH1

NCBI Gene Summary for NOTCH1 Gene

  • This gene encodes a member of the NOTCH family of proteins. Members of this Type I transmembrane protein family share structural characteristics including an extracellular domain consisting of multiple epidermal growth factor-like (EGF) repeats, and an intracellular domain consisting of multiple different domain types. Notch signaling is an evolutionarily conserved intercellular signaling pathway that regulates interactions between physically adjacent cells through binding of Notch family receptors to their cognate ligands. The encoded preproprotein is proteolytically processed in the trans-Golgi network to generate two polypeptide chains that heterodimerize to form the mature cell-surface receptor. This receptor plays a role in the development of numerous cell and tissue types. Mutations in this gene are associated with aortic valve disease, Adams-Oliver syndrome, T-cell acute lymphoblastic leukemia, chronic lymphocytic leukemia, and head and neck squamous cell carcinoma. [provided by RefSeq, Jan 2016]

CIViC Summary for NOTCH1 Gene
  • NOTCH1 is one of four known genes encoding the NOTCH family of proteins, a group of receptors involved in the Notch signaling pathway. NOTCH proteins are characterized by N-terminal EGF-like repeats followed by LNR domains which form a complex with ligands to prevent signaling. The Notch signaling pathway is involved in processes related to cell fate specification, differentiation, proliferation, and survival. Activation of Notch has been shown to be correlative with mammary tumorgenesis in mice and increased expression of Notch receptors has been observed in a variety of cancer types including cervical, colon, head and neck, lung, renal, pancreatic, leukemia, and breast cancer. A number of treatment modalities have been explored related to Notch inhibition especially in breast cancer with mixed results.

    GeneCards Summary for NOTCH1 Gene

    NOTCH1 (Notch Receptor 1) is a Protein Coding gene. Diseases associated with NOTCH1 include Aortic Valve Disease 1 and Adams-Oliver Syndrome 5. Among its related pathways are Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants and Pre-NOTCH Expression and Processing. Gene Ontology (GO) annotations related to this gene include DNA-binding transcription factor activity and sequence-specific DNA binding. An important paralog of this gene is NOTCH2.

    UniProtKB/Swiss-Prot Summary for NOTCH1 Gene

    Functions as a receptor for membrane-bound ligands Jagged-1 (JAG1), Jagged-2 (JAG2) and Delta-1 (DLL1) to regulate cell-fate determination. Upon ligand activation through the released notch intracellular domain (NICD) it forms a transcriptional activator complex with RBPJ/RBPSUH and activates genes of the enhancer of split locus. Affects the implementation of differentiation, proliferation and apoptotic programs. Involved in angiogenesis; negatively regulates endothelial cell proliferation and migration and angiogenic sprouting. Involved in the maturation of both CD4(+) and CD8(+) cells in the thymus. Important for follicular differentiation and possibly cell fate selection within the follicle. During cerebellar development, functions as a receptor for neuronal DNER and is involved in the differentiation of Bergmann glia. Represses neuronal and myogenic differentiation. May play an essential role in postimplantation development, probably in some aspect of cell specification and/or differentiation. May be involved in mesoderm development, somite formation and neurogenesis. May enhance HIF1A function by sequestering HIF1AN away from HIF1A. Required for the THBS4 function in regulating protective astrogenesis from the subventricular zone (SVZ) niche after injury. Involved in determination of left/right symmetry by modulating the balance between motile and immotile (sensory) cilia at the left-right organiser (LRO). ( NOTC1_HUMAN,P46531 ) 

    Protein attributes for NOTCH1 Gene
    Size: 2555 amino acids
    Molecular mass: 272505 Da
    Quaternary structure:

    • Heterodimer of a C-terminal fragment N(TM) and an N-terminal fragment N(EC) which are probably linked by disulfide bonds.
      Interacts with DNER, DTX1, DTX2 and RBPJ/RBPSUH.
      Also interacts with MAML1, MAML2 and MAML3 which act as transcriptional coactivators for NOTCH1 (PubMed:11101851, 12370315).
      The NOTCH1 intracellular domain interacts with SNW1; the interaction involves multimerized NOTCH1 NICD and is implicated in a formation of an intermediate preactivation complex which associates with DNA-bound CBF-1/RBPJ (PubMed:10713164).
      The activated membrane-bound form interacts with AAK1 which promotes NOTCH1 stabilization.
      Forms a trimeric complex with FBXW7 and SGK1.
      Interacts with HIF1AN.
      HIF1AN negatively regulates the function of notch intracellular domain (NICD), accelerating myogenic differentiation (PubMed:17573339).
      Interacts (via NICD) with SNAI1 (via zinc fingers); the interaction induces SNAI1 degradation via MDM2-mediated ubiquitination and inhibits SNAI1-induced cell invasion.
      Interacts (via NICD) with MDM2A.
      Interacts (via NICD) with BCL6; the interaction decreases MAML1 recruitment by NOTCH1 NICD on target genes DNA and inhibits NOTCH1 transcractivation activity.
      Interacts with THBS4 (By similarity).
      Interacts (via the EGF-like repeat region) with CCN3 (via CTCK domain) (PubMed:12050162).
      Interacts (via EGF-like domains) with DLL4 (via N-terminal DSL and MNNL domains) (By similarity).
      Interacts with ZMIZ1.
      Interacts (via NICD domain) with MEGF10 (via the cytoplasmic domain).
      Interacts with DLL1 and JAG1 (By similarity).
      Interacts (via NICD domain) with PRAG1 (By similarity).
      Forms a complex with PRAG1, N1ICD and MAML1, in a MAML1-dependent manner (By similarity).
      Interacts (via transmembrane region) with PSEN1; the interaction is direct (PubMed:30598546).
      Interacts with ZFP64 (By similarity).
    Post-translational modifications for NOTCH1 Gene
    • Synthesized in the endoplasmic reticulum as an inactive form which is proteolytically cleaved by a furin-like convertase in the trans-Golgi network before it reaches the plasma membrane to yield an active, ligand-accessible form (By similarity).
      Cleavage results in a C-terminal fragment N(TM) and a N-terminal fragment N(EC).
      Following ligand binding, it is cleaved by ADAM17 to yield a membrane-associated intermediate fragment called notch extracellular truncation (NEXT) (PubMed:24226769).
      Following endocytosis, this fragment is then cleaved by one of the catalytic subunits of gamma-secretase (PSEN1 or PSEN2), to release a Notch-derived peptide containing the intracellular domain (NICD) from the membrane (PubMed:30598546).
      ( P46531-NOTC1_HUMAN )
    • Phosphorylated. ( P46531-NOTC1_HUMAN )
    • O-glycosylated on the EGF-like domains (PubMed:24226769).
      O-glucosylated at Ser-435 by KDELC1 and KDELC2 (PubMed:30127001).
      Contains both O-linked fucose and O-linked glucose in the EGF-like domains 11, 12 and 13, which are interacting with the residues on DLL4 (By similarity).
      O-linked glycosylation by GALNT11 is involved in determination of left/right symmetry: glycosylation promotes activation of NOTCH1, possibly by promoting cleavage by ADAM17, modulating the balance between motile and immotile (sensory) cilia at the left-right organiser (LRO) (PubMed:24226769).
      MFNG-, RFNG- and LFNG-mediated modification of O-fucose residues at specific EGF-like domains results in inhibition of its activation by JAG1 and enhancement of its activation by DLL1 via an increased binding to DLL1 (By similarity).
      ( P46531-NOTC1_HUMAN )
    • Ubiquitinated.
      Undergoes 'Lys-29'-linked polyubiquitination by ITCH; promotes the lysosomal degradation of non-activated internalized NOTCH1 (PubMed:18628966, 23886940).
      Monoubiquitination at Lys-1759 is required for activation by gamma-secretase cleavage, it promotes interaction with AAK1, which stabilizes it.
      Deubiquitination by EIF3F is necessary for nuclear import of activated Notch (PubMed:24226769).
      ( P46531-NOTC1_HUMAN )
    • Hydroxylated at Asn-1955 by HIF1AN.
      Hydroxylated at Asn-2022 by HIF1AN (By similarity).
      Hydroxylation reduces affinity for HI1AN and may thus indirectly modulate negative regulation of NICD (By similarity).
      ( P46531-NOTC1_HUMAN )
    • Glycosylation at Asn41, Ser65, Thr73, Thr116, Ser146, Thr194, Thr232, Thr311, Ser341, Thr349, Ser378, Ser435, Ser458, Thr466, Ser496, Ser534, Ser609, Thr617, Ser647, Thr692, Ser722, Ser759, Thr767, Ser784, Ser797, Thr805, Ser921, Ser951, Asn959, Thr997, Ser1027, Thr1035, Ser1065, Thr1159, Asn1179, Ser1189, Thr1197, Asn1241, Ser1273, Thr1362, Thr1379, Thr1402, Asn1489, Asn1587, and Thr1725 ( NX_P46531 [NX_P46531-1] )
    • Ubiquitination at Lys1759 ( NX_P46531 [NX_P46531-1] )
    • Modification sites at PhosphoSitePlus ( P46531 )
    • Glycosylation from GlyGen (P46531) 57 sites, 3 O-linked glycans (13 sites)

     

    Gene Families for NOTCH1 Gene
    HGNC:
    IUPHAR :
    Human Protein Atlas (HPA):
    • Cancer-related genes
    • Disease related genes
    • Human disease related genes
    • Plasma proteins
    • Potential drug targets
    • Predicted membrane proteins
    • Transporters

    Protein Domains for NOTCH1 Gene

    InterPro:
    Blocks:
    • Ankyrin repeat signature
    • Aspartic acid and asparagine hydroxylation site
    • EGF-like calcium-binding
    • LIN-12/notch repeat (LNR) signature
     
    Suggested Antigen Peptide Sequences for NOTCH1 Gene
    GenScript: Design optimal peptide antigens:
    • Truncated NOTCH1 (A7TW83_HUMAN)
    • Translocation-associated notch protein TAN-1 (NOTC1_HUMAN)
    • NOTCH1 protein (Q6IAD4_HUMAN)
    Graphical View of Domain Structure for InterPro Entry
    P46531
    UniProtKB/Swiss-Prot:
    NOTC1_HUMAN :
    • Interaction with PSEN1 causes partial unwinding of the transmembrane helix, facilitating access to the scissile peptide bond.
    • Belongs to the NOTCH family.
    Domain:
    • Interaction with PSEN1 causes partial unwinding of the transmembrane helix, facilitating access to the scissile peptide bond.
    Family:
    • Belongs to the NOTCH family. 
    Molecular function for NOTCH1 Gene according to UniProtKB/Swiss-Prot
    Repetition:  Function:
    • Functions as a receptor for membrane-bound ligands Jagged-1 (JAG1), Jagged-2 (JAG2) and Delta-1 (DLL1) to regulate cell-fate determination.
      Upon ligand activation through the released notch intracellular domain (NICD) it forms a transcriptional activator complex with RBPJ/RBPSUH and activates genes of the enhancer of split locus.
      Affects the implementation of differentiation, proliferation and apoptotic programs.
      Involved in angiogenesis; negatively regulates endothelial cell proliferation and migration and angiogenic sprouting.
      Involved in the maturation of both CD4(+) and CD8(+) cells in the thymus.
      Important for follicular differentiation and possibly cell fate selection within the follicle.
      During cerebellar development, functions as a receptor for neuronal DNER and is involved in the differentiation of Bergmann glia.
      Represses neuronal and myogenic differentiation.
      May play an essential role in postimplantation development, probably in some aspect of cell specification and/or differentiation.
      May be involved in mesoderm development, somite formation and neurogenesis.
      May enhance HIF1A function by sequestering HIF1AN away from HIF1A.
      Required for the THBS4 function in regulating protective astrogenesis from the subventricular zone (SVZ) niche after injury.
      Involved in determination of left/right symmetry by modulating the balance between motile and immotile (sensory) cilia at the left-right organiser (LRO). NOTC1_HUMAN,P46531
    Molecular function for NOTCH1 Gene according to GENATLAS
    Biochemistry:
    • Drosophila Notch homolog 1,mediating cell-cell interactions that specify cell fate during development,undergoing a first proteolytic cleavage by furin (PACE1) in the Golgi during trafficking of Notch to the cell surface,undergoing further cleavage by gamma secretase (see PSEN1) releasing an intracellular domain (NICD) which translocates to the nucleus and modulates transcription of target genes,involved in acute lymphocytic leukemia with translocation t(7;9)(q34;q34.3),expressed in CD34+ hematopoietic cells (see TAN1) and in the developing cochlear duct,inducing delay of hematopoietic differentiation and alteration of cell cycle kinetics NOTCH1
    • breakpoint in T acute lymphocytic leukemia with translocation t(7;9)(q34;q34.3) NOTCH1

     https://pathway-viewer.toolforge.org/embed/WP4262

    Tässä ylläolevassa  taulukossa näkyy  rintasyövän signalointitiet ja niissä NOtCH signaloinnin  osuus. 

fredag 15 mars 2024

ETS-transkriptiofaktori ELF3 aktivoi kuparin kuljettajan SLC31A1.Kuparin lisäksi edistää myös cadmiumin, hopean ja platinan soluunottoa

 ELF3   (1q32.1)     (E74 Like ETS Transcription Factor 3)

https://www.genecards.org/cgi-bin/carddisp.pl?gene=ELF3&keywords=ELF3

 Enables DNA-binding transcription activator activity, RNA polymerase II-specific and sequence-specific double-stranded DNA binding activity. Involved in inflammatory response; negative regulation of transcription, DNA-templated; and positive regulation of transcription by RNA polymerase II. Located in Golgi apparatus; cytosol; and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022] GeneCards Summary for ELF3 Gene: ELF3 (E74 Like ETS Transcription Factor 3) is a Protein Coding gene. Diseases associated with ELF3 include Ampulla Of Vater Cancer and Bladder Urothelial Carcinoma. Among its related pathways are Pre-NOTCH Expression and Processing and Signal Transduction. Gene Ontology (GO) annotations related to this gene include DNA-binding transcription factor activity and transcription coactivator activity. An important paralog of this gene is EHF. UniProtKB/Swiss-Prot Summary for ELF3 Gene:  Transcriptional activator that binds and transactivates ETS sequences containing the consensus nucleotide core sequence GGA[AT]. Acts synergistically with POU2F3 to transactivate the SPRR2A promoter and with RUNX1 to transactivate the ANGPT1 promoter. Also transactivates collagenase, CCL20, CLND7, FLG, KRT8, NOS2, PTGS2, SPRR2B, TGFBR2 and TGM3 promoters. Represses KRT4 promoter activity. Involved in mediating vascular inflammation. May play an important role in epithelial cell differentiation and tumorigenesis. May be a critical downstream effector of the ERBB2 signaling pathway. May be associated with mammary gland development and involution. Plays an important role in the regulation of transcription with TATA-less promoters in preimplantation embryos, which is essential in preimplantation development (By similarity). ( ELF3_HUMAN,P78545 ).

Protein attributes for ELF3 Gene Size:371 amino acids 

Quaternary structure: 

Interacts with TBP. Interacts with CREBBP and EP300; these act as transcriptional coactivators of ELF3 and positively modulate its function. Interacts with XRCC5/KU86 and XRCC6/KU70; these inhibit the ability of ELF3 to bind DNA and negatively modulate its transcriptional activity. Associated with CLND7 and POU2F3. Interacts with ZNF768 (PubMed:30476274).

2024 article:  (Impact to platin   uptake also )

 The copper transporter, SLC31A1, transcriptionally activated by ELF3, imbalances copper homeostasis to exacerbate cisplatin-induced acute kidney injury through mitochondrial dysfunction.

Qiu Z, Liu Q, Wang L, Xiong Y, Wu J, Wang M, Yan X, Deng H. Chem Biol Interact. 2024 Mar 8:110943. doi: 10.1016/j.cbi.2024.110943. Online ahead of print. PMID: 38462
Acute kidney injury (AKI) is a common complication of cisplatin chemotherapy, which greatly limits its clinical effect and application. This study explored the function of solute Carrier Family 31 Member 1 (SLC31A1) in cisplatin-induced AKI and its possible mechanism. Mice and HK-2 cells were exposed to cisplatin to establish the in vivo and in vitro AKI models. Cell viability was detected by CCK-8. Mitochondrial and oxidative damage was determined by Mito-Tracker Green staining, mtROS level, ATP production, mitochondrial membrane potential, MDA content and CAT activity. AKI was evaluated by renal function and histopathological changes. Apoptosis was detected by TUNEL and caspase-3 expression. Molecule expression was measured by RT-qPCR, Western blotting, and immunohistochemistry. Molecular mechanism was studied by luciferase reporter assay and ChIP. SLC31A1 level was predominantly increased by cisplatin exposure in AKI models. Notably, copper ion (Cu+) level was enhanced by cisplatin challenge. Moreover, Cu+ supplementation intensified cisplatin-induced cell death, mitochondrial dysfunction, and oxidative stress in HK-2 cells, indicating the involvement of cuproptosis in cisplatin-induced AKI, whereas these changes were partially counteracted by SLC31A1 knockdown. E74 like ETS transcription factor 3 (ELF3) could directly bind to SLC31A1 promoter and promote its transcription. ELF3 was up-regulated and positively correlated with SLC31A1 expression upon cisplatin-induced AKI. SLC31A1 silencing restored renal function, alleviated mitochondrial dysfunction, and apoptosis in cisplatin-induced AKI mice. ELF3 transcriptionally activated SLC31A1 to trigger cuproptosis that drove cisplatin-induced AKI through mitochondrial dysfunction, indicating that SLC31A1 might be a promising therapeutic target to mitigate AKI during cisplatin chemotherapy.  
 
 Kuparinkuljettajan funktio:
 SLC31A (9q32) 
  • GeneCards Symbol: SLC31A1 2
  • Solute Carrier Family 31 Member 1 2 3 4 5
  • CTR1 2 3 4 5
  • HCTR1 2 4 5
  • COPT1 3 4 5
  • Solute Carrier Family 31 (Copper Transporter), Member 1 2 3
  • High Affinity Copper Uptake Protein 1 3 4
  • Copper Transporter 1 3 4
  • Solute Carrier Family 31 (Copper Transporters), Member 1 3
  • Copper Transport 1 Homolog 3
  • NSCT 3
NCBI Gene Summary for SLC31A1 Gene
The protein encoded by this gene is a high-affinity copper transporter found in the cell membrane. The encoded protein functions as a homotrimer to effect the uptake of dietary copper. [provided by RefSeq, Aug 2011]
GeneCards Summary for SLC31A1 Gene: SLC31A1 (Solute Carrier Family 31 Member 1) is a Protein 
 
Coding gene. Diseases associated with SLC31A1 include Neurodegeneration And Seizures Due To Copper Transport Defect and Disorder Of Copper Metabolism. Among its related pathways are Transport of inorganic cations/anions and amino acids/oligopeptides and Copper homeostasis. Gene Ontology (GO) annotations related to this gene include copper ion transmembrane transporter activity and copper ion transmembrane transporter activity. An important paralog of this gene is SLC31A2.
UniProtKB/Swiss-Prot Summary for SLC31A1 Gene: [High affinity copper uptake protein 1]: Uniporter that mediates the transport of copper(1+) from the extracellular space to the cytoplasm, across the plasma membrane (PubMed:11734551, 16135512, 17525160, 19740744, 20451502, 20569931, 23658018) and delivers directly copper(1+) to specific chaperone such as ATOX1, via a copper(1+)- mediated transient interaction between the C-terminal domain and a copper(1+) chaperone, thus controlling intracellular copper(1+) levels (PubMed:26745413, 11734551, 17525160, 20451502, 19740744, 16135512, 23658018, 20569931). May function in copper(1+) import from the apical membrane thus may drive intestinal copper absorption (By similarity). The copper(1+) transport mechanism is sodium-independent, saturable and of high-affinity (PubMed:11734551). Also mediates the uptake of silver(1+) (PubMed:20569931). May function in the influx of the platinum-containing chemotherapeutic agents (PubMed:20451502, 20569931). The platinum-containing chemotherapeutic agents uptake is saturable (By similarity). In vitro, mediates the transport of cadmium(2+) into cells (PubMed:33294387). Also participates in the first step of copper(2+) acquisition by cells through a direct transfer of copper(2+) from copper(2+) carriers in blood, such as ALB to the N-terminal domain of SLC31A1, leading to copper(2+) reduction and probably followed by copper(1+) stabilization (PubMed:30489586). In addition, functions as a redox sensor to promote angiogenesis in endothelial cells, in a copper(1+) transport independent manner, by transmitting the VEGF-induced ROS signal through a sulfenylation at Cys-189 leadin g to a subsequent disulfide bond formation between SLC31A1 and KDR (PubMed:35027734). The SLC31A1-KDR complex is then co-internalized to early endosomes, driving a sustained VEGFR2 signaling (PubMed:35027734). ( COPT1_HUMAN,O15431 )

[Truncated CTR1 form]: Mobilizes copper(1+) out of the endosomal compartment, making copper(1+) available for export out of the cells. ( COPT1_HUMAN,O15431 ) 

https://pubmed.ncbi.nlm.nih.gov/35027734/

 

NCBI Gene Summary for SLC31A2 Gene Predicted to enable copper ion transmembrane transporter activity. Predicted to be involved in cellular copper ion homeostasis. Predicted to act upstream of or within regulation of copper ion transmembrane transport. Predicted to be located in membrane. Predicted to be active in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]
GeneCards Summary for SLC31A2 Gene:  SLC31A2 (Solute Carrier Family 31 Member 2) is a Protein Coding gene. Diseases associated with SLC31A2 include Combined Oxidative Phosphorylation Deficiency 8 and Menkes Disease. Among its related pathways are Copper homeostasis. Gene Ontology (GO) annotations related to this gene include copper ion transmembrane transporter activity. An important paralog of this gene is SLC31A1.
Does not function as a copper(1+) importer in vivo (By similarity). However, in vitro functions as low-affinity copper(1+) importer (PubMed:17944601, 17617060). Regulator of SLC31A1 which facilitates the cleavage of the SLC31A1 ecto-domain or which stabilizes the truncated form of SLC31A1 (Truncated CTR1 form), thereby drives the SLC31A1 truncated form-dependent endosomal copper export and modulates the copper and cisplatin accumulation via SLC31A1 (By similarity). ( COPT2_HUMAN,O15432 ) 


  • Ravinnon kupari: Kuparipitoiset  ravinteet: Copper  sources in  food:These has also high Kalium  many of them.

 Oysters and other shellfish , whole grains, beans, nuts, potatoes, and organ meats (kidneys, liver) are good sources of copper. Dark leafy greens, dried fruits such as prunes, cocoa, black pepper, and yeast are also sources of copper in the diet.

( Nämä kuparinkuljettajat osallistunevat myös platinan kuljetukseen kuten hopeankin).