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- W2027560181 abstract "Glucose metabolism is increased in CNS tumors and correlates with malignant grade. We have previously investigated the role of IGFs in regulating CNS tumor growth and metabolism. In the present study we examined total cellular RNA from human CNS tumors for the presence for glucose transporter (Glut) and IGF mRNA. Human meningiomas and gliomas were frozen in liquid nitrogen at the time of surgery and then stored at −80°C. Total cellular RNA was prepared by acid-guanidinium phenol-chloroform extraction and 20 μg of RNA was loaded for agarose-formaldehyde gel electrophoresis and transfer. RNA intergrity in 5 meningiomas and 2 gliomas was confirmed by ethidium bromide staining of 28S and 18S ribosomal RNA and hybridization with a cDNA probe for β-actin. For analysis, membranes were hybridized to radioactively labeled human Glut-1, Glut-3, IGF-I, and IGF-II cDNA probes, and mRNA transcripts were identified by autoradiography. All 7 tumors expressed Glut-1 and Glut-3 mRNA and Glut-3 appeared to be more abundant in meningiomas. IGF-II mRNA was detected in 2 of 6 meningiomas and in both gliomas. IGFs may play an important role in the regulation of glucose metabolism in CNS tumors. IGFs and specific glucose transporters may prove useful as markers of malignancy and potential targets for future therapy." @default.
- W2027560181 created "2016-06-24" @default.
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- W2027560181 date "1993-10-01" @default.
- W2027560181 modified "2023-09-27" @default.
- W2027560181 title "Identification of insulin-like growth factor (IGF) and glucose transporter-1 and -3 mRNA in CNS tumors" @default.
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- W2027560181 doi "https://doi.org/10.1016/0167-0115(93)90354-b" @default.
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