Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 20, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/ijms20102482
Keywords
amyloid; A peptide; glioma; platelets
Funding
- NIH [SC1GM122691, SC2GM111149]
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Immunostaining with specific antibodies has shown that innate amyloid beta (A) is accumulated naturally in glioma tumors and nearby blood vessels in a mouse model of glioma. In immunofluorescence images, A peptide coincides with glioma cells, and enzyme-linked immunosorbent assay (ELISA) have shown that A peptide is enriched in the membrane protein fraction of tumor cells. ELISAs have also confirmed that the A(1-40) peptide is enriched in glioma tumor areas relative to healthy brain areas. Thioflavin staining revealed that at least some amyloid is present in glioma tumors in aggregated forms. We may suggest that the presence of aggregated amyloid in glioma tumors together with the presence of A immunofluorescence coinciding with glioma cells and the nearby vasculature imply that the source of A peptides in glioma can be systemic A from blood vessels, but this question remains unresolved and needs additional studies.
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