CD133

Source: Wikipedia, the free encyclopedia.
PROM1
Identifiers
Gene ontology
Molecular function
Cellular component
Biological process
Sources:Amigo / QuickGO
Ensembl
UniProt
RefSeq (mRNA)
RefSeq (protein)
Location (UCSC)Chr 4: 15.96 – 16.08 MbChr 5: 44.15 – 44.26 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

CD133 antigen, also known as prominin-1, is a

transmembrane glycoproteins, which specifically localize to cellular protrusions. When embedded in the cell membrane, the membrane topology of prominin-1 is such that the N-terminus extends into the extracellular space and the C-terminus resides in the intracellular compartment. The protein consists of five transmembrane segments, with the first and second segments and the third and fourth segments connected by intracellular loops while the second and third as well as fourth and fifth transmembrane segments are connected by extracellular loops.[7] While the precise function of CD133 remains unknown, it has been proposed that it acts as an organizer of cell membrane topology.[8]

Tissue distribution

CD133 is expressed in

glial stem cells,[11] various pediatric brain tumors,[12] as well as adult kidney, mammary glands, trachea, salivary glands, uterus, placenta, digestive tract, testes, and some other cell types.[13][14][15]

Clinical significance

Today CD133 is the most commonly used marker for isolation of

immunogenic and can be used as an antimelanoma vaccination. In mice the vaccination with CD133+ melanoma cells mediated strong anti-tumor activity that resulted in the eradication of parental melanoma cells.[22] In addition, it has also been shown that CD133+ melanoma cells preferentially express the RNA helicase DDX3X. As DDX3X also is an immunogenic protein, the same anti-melanoma vaccination strategy can be employed to give therapeutic antitumor immunity in mice.[23]

See also

References

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000007062 - Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000029086 - Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. PMID 9389720
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Further reading

External links

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