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Mol Biol (Mosk). 2015 Nov-Dec;49(6):1052-5. doi: 10.7868/S0026898415060154.

[Receptor tyrosine kinase KIT may regulate expression of genes involved in spontaneous regression of neuroblastoma].

[Article in Russian]

Author information

1
Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia;
2
Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997 Russia.
3
Rogachev Federal Research Center of Pediatric Hematology, Oncology, and Immunology, Moscow, 117997 Russia.
4
First Oncology Research and Advisory Center, Moscow, 117198 Russia.
5
prassolov45@mail.ru.

Abstract

Hallmark of neuroblastoma is an ability of this malignant tumor to undergo spontaneous regression or differentiation into benign tumor during any stage of the disease, but it is little known about mechanisms of these phenomena. We studied effect of receptor tyrosine kinase receptor KIT on expression of genes, which may be involved in tumor spontaneous regression. Downregulation of KIT expression by RNA interference in SH-SY5Y cells causes suppression of neurotrophin receptor NGFR expression that may promote the loss of sensibility of cells to nerve growth factors, also it causes upregulation of TrkA receptor expression which can stimulate cell differentiation or apoptosis in NGF dependent manner. Furthermore there is an upregulation of genes which stimulate malignant cell detection by immune system, such as genes of major histocompatibility complex HLA class I HLA-B and HLA-C, and interferon-γ receptors IFNGR1 and IFNGR2 genes. Thus KIT can mediate neuroblastoma cell sensibility to neurotrophins and immune system components--two factors directly contributing to spontaneous regression of neuroblastoma.

KEYWORDS:

KIT; malignant neoplasms; neuroblastoma; neurotrophins; spontaneous regression

PMID:
26710790
DOI:
10.7868/S0026898415060154
[Indexed for MEDLINE]
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