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In vitro characterization of Mato's FGP cells isolated from rat cerebrum
Tomoko Nakazawa1, Megumi Nishikawa, Eizo Aikawa
1Department of Anatomy and Developmental Biology, Medical School, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan. tnaka@research.twmu.ac.jp
Abstract:
Mato's FGP cells surrounding cerebral arterioles play a significant role in the maintenance of a homeostatic microenvironment in the brain. In this study, the perivascular cells were isolated from rat cerebral microvessels and cultured in vitro to characterize their phenotype. Autofluorescence of the intracellular granules in cultured cells and the uptake of HRP and DiI-Ac-LDL by these cells were observed. The cells reacted positively to an anti-scavenger receptor A antibody. Positive immunoreactions of cultured cells to ED1 and ED2 antibodies were observed, whereas they were weak or negative to ED3 and OX42 antibodies. Acid phosphatase activity was detected in the granules of cultured cells. In conclusion, the cells cultivated under the present conditions revealed very similar characteristics to Mato's FGP cells in situ and therefore are useful for studies on FGP cells.
Insights
Researchers cultured perivascular cells from rat brains to study Mato's FGP cells. These cultured cells exhibit characteristics similar to in situ FGP cells, making them valuable for future brain microenvironment research.
Area of Science:
- Neuroscience
- Cell Biology
- Microcirculation Research
Background:
- Mato's FGP cells are crucial for maintaining brain microenvironment homeostasis.
- Understanding FGP cell phenotype is vital for studying neurological conditions.
Purpose of the Study:
- To isolate and characterize perivascular cells from rat cerebral microvessels in vitro.
- To determine if cultured cells resemble Mato's FGP cells in situ.
Main Methods:
- Isolation and in vitro culture of perivascular cells from rat cerebral microvessels.
- Phenotypic characterization using autofluorescence, HRP and DiI-Ac-LDL uptake, and immunoreactions to specific antibodies (Scavenger Receptor A, ED1, ED2, ED3, OX42).
- Assay for acid phosphatase activity.
Main Results:
- Cultured cells displayed autofluorescent intracellular granules.
- Cells demonstrated uptake of HRP and DiI-Ac-LDL.
- Positive immunoreactions to anti-scavenger receptor A, ED1, and ED2 antibodies were observed.
- Acid phosphatase activity was detected in the cells' granules.
Conclusions:
- The in vitro cultured perivascular cells exhibit characteristics highly similar to Mato's FGP cells found in situ.
- These cultured cells serve as a valuable model for investigating FGP cell functions and their role in brain homeostasis.