Abstract:
:Malignant astrocytomas are highly invasive, vascular neoplasms that comprise the majority of nervous system tumors in humans. A strong association has previously been made between malignancy in human astrocytic tumors and increased expression of certain fibroblast growth factor (FGF) family members. MG-160 is an intrinsic type I cysteine-rich membrane sialoglycoprotein that resides in the medial cisternae of the Golgi apparatus, highly homologous to CFR, chicken fibroblast growth factor receptor, and ESL-1, E-selectin ligand. MG-160 binds fibroblast growth factors (FGFs) and may be involved in the intracellular trafficking of FGFs and the regulation of cellular response to FGFs. In the present study MG-160 expression was evaluated in human brain tumors exhibiting varying degrees of malignancy. At the mRNA level MG-160 expression was inversely correlated with the histological grade of astrocytomas such that high levels of MG-160 were observed in low-grade astrocytomas and low levels in malignant astrocytomas. This differential expression of MG-160 mRNA was verified at the protein level using immunohistochemistry. Grade II astrocytomas displayed consistent and intense staining for MG-160 as seen in normal brain. In contrast to the lower grade tumors, grade IV astrocytomas exhibited variable and weaker expression of MG-160. Our results suggest that, MG-160 may participate in malignant progression in astrocytomas. In addition, other brain tumors and human astrocytoma cell lines were characterized for MG-160 expression.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Yamaguchi F,Morrison RS,Gonatas NK,Takahashi H,Sugisaki Y,Teramoto Akeywords:
subject
Has Abstractpub_date
2003-05-01 00:00:00pages
1045-9issue
5eissn
1019-6439issn
1791-2423journal_volume
22pub_type
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journal_title:International journal of oncology
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journal_title:International journal of oncology
pub_type: 临床试验,杂志文章
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pub_type: 杂志文章,评审
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pub_type: 已发布勘误
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