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FLASH GENE
Symbol MDK contributors: mct - updated : 21-10-2019
HGNC name midkine (neurite growth-promoting factor 2)
HGNC id 6972
PROTEIN
PHYSICAL PROPERTIES
STRUCTURE
motifs/domains
isoforms Precursor a 121AA mature protein
HOMOLOGY
interspecies ortholog to murine Mk
intraspecies homolog to NEGF1
Homologene
FAMILY pleiotrophin family
CATEGORY adhesion , signaling cytokine growth factor
SUBCELLULAR LOCALIZATION extracellular
    intracellular
intracellular,cytoplasm
basic FUNCTION
  • essential for normal development of the catecholamine and renin-angiotensin pathways and the synthesis of different collagens
  • involved in nervous system development
  • mediator for intercellular transfer of drug resistance
  • promoting the migration of inflammatory leukocytes
  • playing important roles in the formation of intraperitoneal adhesions, at least partly by promoting the migration of macrophages and neutrophils to the omentum
  • implicated in the tumorigenesis of benign and plexiform neurofibromas, and therefore arising malignant peripheral nerve sheath tumors (MPNSTs)
  • factor that plays a role in the nigrostriatal system during development and in response to disease, and may therefore be useful for neuroprotection or reconstruction of the dopamine (DA) system
  • may maintain normal adult brain as a neurotrophic factor, and MDK may be released from leucocytes in brain of patients with meningitis as an immunological mediator
  • may contribute to neuronal regeneration
  • promotes tumor growth mainly by inducing angiogenesis
  • MDK is a pivotal player of angiogenesis during ischemia in nonmalignant tissue
  • critical role for the MDK-NOTCH2 signaling axis in neuroblastoma tumorigenesis, which implicates new strategies to treat neuroblastoma
  • cytokine midkine supports neutrophil trafficking during acute inflammation by promoting adhesion via beta2 integrins (CD11/CD18)
  • heparin-binding growth factor, which behaves like a cytokine, involved in various cellular processes such as cellular proliferation, differentiation, survival, adhesion, and migration
  • seems to be involved in the development of Henoch-Schönlein purpura (HSP)
  • serves an indispensable role in the NFATC1-regulated activation of CD4+ T cells and Th1 cell differentiation
  • is a heparin binding growth factor and is involved in neurogenesis, neural development and neuroprotection
  • may play a role in autism spectrum disorders (ASD) pathogenesis
  • MDK is responsible for increased plasma levels of vascular endothelial growth factor A (VEGFA), necessary and sufficient to promote endothelial cell proliferation in growing collaterals
  • role of midkine in endothelial proliferation are likely to be relevant for both, the process of arteriogenesis and angiogenesis
  • is a pleiotropic factor, which is involved in angiogenesis
  • CELLULAR PROCESS nucleotide, transcription
    PHYSIOLOGICAL PROCESS development
    text nervous tissue development and/or maintenance
    PATHWAY
    metabolism
    signaling
    a component
    INTERACTION
    DNA
    RNA
    small molecule
    protein
  • binding to heparin
  • regulates PTN gene expression with a high degree of organ specificity
  • PLSCR1 is a novel MDK-interacting protein
  • PLSCR1 positively regulates hepatic carcinoma cell proliferation and migration through interacting with MDK, thus deepening our understanding on the regulation of midkine during hepatic carcinoma growth and metastasis
  • LTK in neural crest cells interacts with MDK emanating from the non-neural ectoderm to promote cell survival, revealing a new signaling pathway that is essential for neural crest development
  • cell & other
    REGULATION
    induced by retinoic acid responsive
    ASSOCIATED DISORDERS
    corresponding disease(s)
    Other morbid association(s)
    TypeGene ModificationChromosome rearrangementProtein expressionProtein Function
    tumoral       loss of function
    in sporadic colorectal and gastric cancer
    tumoral     --over  
    in hepatocellular carcinomas
    tumoral     --over  
    in malignant peripheral nerve sheath tumor
    constitutional     --over  
    in autism spectrum disorder patients
    constitutional     --over  
    elevated plasma MDK and PTN levels in patients with systemic lupus erythematosus
    constitutional       loss of function
    exacerbates necrotizing glomerular injuries in progressive glomerulonephritis
    Susceptibility
    Variant & Polymorphism
    Candidate gene
    Marker
  • urinary midkine as a biomarker in patients with acute kidney injury
  • MDK and PTN growth factors might be likely useful as markers for infection in pregnancies
  • co-expression of MDK and PTN is significantly correlated with prognosis in glioma patients
  • high expression of MDK and SDC3 may contribute to the highly perineural invasion and poor prognosis of human pancreatic cancer
  • could be taken as an ideal diagnostic marker of acute leukemia
  • Therapy target
    SystemTypeDisorderPubmed
    tumor  
    specific inhibitors for MDK as part of new therapeutic concepts against MPNSTs (malignant peripheral nerve sheath tumor)
    immunologyautoimmune 
    is a promising therapeutic target for various autoimmune diseases
    osteoarticularboneostéoporosis
    MDK-specific antagonists might prove beneficial in osteoporosis therapy
    cancerhemopathy 
    could be taken as an ideal molecular target for the treatment of acute leukemia
    ANIMAL & CELL MODELS
  • Mdk-deficiency in mice has an anabolic effect on mechanically induced cortical bone formation