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image of Effect of Sema3F on VEGF in Primary Rat Hippocampal NeuronsIn vitro

Abstract

Introduction

This study aimed to explore the mechanism of semaphorin 3F- (Sema3F) induced hippocampal axonal growth cone collapse by studying the effect of Sema3F on vascular endothelial growth factor (VEGF) primary rat hippocampal neuron culture system.

Methods

Hippocampal neurons were taken from Wistar rats within 24 hours after birth for primary culture . On the third day, Sema3F was added to the experimental group, and fetal bovine serum at the same concentration was added to the control group. The cells were collected at 0, 5, 15, and 30 min. The expression of VEGF messenger ribonucleic acid (mRNA) in the hippocampal neurons was detected by real-time polymerase chain reaction (PCR), while VEGF expression was detected by Western blot. The level of VEGF expression in the hippocampal neuron culture medium was detected by enzyme-linked immunosorbent assay.

Results

The expression of both VEGF mRNA and VEGF protein in the rats’ hippocampal neurons decreased at different times. The VEGF concentration in the culture medium initially increased before decreasing over time.

Discussion

Sema3F is known to induce growth cone collapse in hippocampal neurons, and this study provides evidence that this effect may be mediated by downregulating VEGF expression and secretion. The initial increase in VEGF concentration in the culture medium could be a compensatory response to the collapse of growth cones, while the subsequent decrease suggests a sustained effect of Sema3F on VEGF regulation. The findings highlight the complex interplay between Sema3F and VEGF in neuronal development and repair. Future research should explore the underlying signaling pathways and potential therapeutic applications of these interactions.

Conclusion

Sema3F inhibited the synthesis of VEGF in hippocampal neurons at transcription and translation levels in a time-dependent manner. Sema3F may also affect the secretion level of VEGF, initially increasing its extracellular expression before decreasing it over time.

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2025-09-26
2025-11-04

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/content/journals/cmm/10.2174/0115665240393105250910123016
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Effect of Sema3F on VEGF in Primary Rat Hippocampal NeuronsIn vitro
Bentham Science Publishers ; https://doi.org/10.2174/0115665240393105250910123016
/content/journals/cmm/10.2174/0115665240393105250910123016
/content/journals/cmm/10.2174/0115665240393105250910123016
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  • Article Type:     Research Article
Keywords: VEGF ; Sema3F ; primary culture ; neuron ; rat

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