Heparan sulfate biosynthetic system is inhibited in human glioma due to EXT1/2 and HS6ST1/2 down-regulation

Victor S. Ushakov, Alexandra Y. Tsidulko, Gabin De La Bourdonnaye, Galina M. Kazanskaya, Alexander M. Volkov, Roman S. Kiselev, Vyacheslav V. Kobozev, Diana V. Kostromskaya, Alexey S. Gaytan, Alexei L. Krivoshapkin, Svetlana V. Aidagulova, Elvira V. Grigorieva

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

14 Цитирования (Scopus)


Heparan sulfate (HS) is an important component of the extracellular matrix and cell surface, which plays a key role in cell-cell and cell-matrix interactions. Functional activity of HS directly depends on its structure, which determined by a complex system of HS biosynthetic enzymes. During malignant transformation, the system can undergo significant changes, but for glioma, HS biosynthesis has not been studied in detail. In this study, we performed a comparative analysis of the HS biosynthetic system in human gliomas of different grades. RT-PCR analysis showed that the overall transcriptional activity of the main HS biosynthesis-involved genes (EXT1, EXT2, NDST1, NDST2, GLCE, HS2ST1, HS3ST1, HS3ST2, HS6ST1, HS6ST2, SULF1, SULF2, HPSE) was decreased by 1.5-2-fold in Grade II-III glioma (p < 0.01) and by 3-fold in Grade IV glioma (glioblastoma multiforme, GBM) (p < 0.05), as compared with the para-tumourous tissue. The inhibition was mainly due to the elongation (a decrease in EXT1/2 expression by 3-4-fold) and 6-O-sulfation steps (a decrease in 6OST1/2 expression by 2-5-fold) of the HS biosynthesis. Heparanase (HPSE) expression was identified in 50% of GBM tumours by immunostaining, and was characterised by a high intratumoural heterogeneity of the presence of the HPSE protein. The detected disorganisation of the HS biosynthetic system in gliomas might be a potential molecular mechanism for the changes of HS structure and content in tumour microenvironments, contributing to the invasion of glioma cells and the development of the disease.

Язык оригиналаанглийский
Номер статьи2301
Число страниц11
ЖурналInternational Journal of Molecular Sciences
Номер выпуска11
СостояниеОпубликовано - 1 нояб. 2017


Подробные сведения о темах исследования «Heparan sulfate biosynthetic system is inhibited in human glioma due to EXT1/2 and HS6ST1/2 down-regulation». Вместе они формируют уникальный семантический отпечаток (fingerprint).