Involvement of Vascular Endothelial Growth Factor in Serotonin 1A Receptor-Mediated Neuroproliferation in Neonatal Mouse Hippocampus

  • S. Samaddar
  • B. Ranasinghe
  • S. J. Tantry
  • P. R. Debata
  • P. BanerjeeEmail author
Conference paper
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 842)


The serotonin 1A receptor (5-HT1A-R) has been linked to many diverse functions in the brain. Our earlier studies have revealed its signaling pathways and function in the hippocampus as well as the prefrontal cortex of neonatal and young adult mice of two strains, C57BL6 and Swiss Webster. Such experiments have revealed that the 5-HT1A-R associates and functionally cooperates with molecules like calmodulin kinase II and the N-methyl-d-aspartic acid receptor to stimulate clozapine-evoked neuronal activity in the prefrontal cortex. Furthermore, in the neonatal mouse brain, 5-HT1A-R signaling plays a profound role in orchestrating hippocampal development through protein kinase C isozymes and the extracellular signal-regulated kinases 1 and 2 (ERK1/2). Results presented here establish that downstream of ERK1/2, vascular endothelial growth factor (VEGF) signaling further amplifies the ERK1/2-mediated neuroproliferative signaling in the neonatal hippocampus. This also indicates that VEGF signaling inhibitors, typically used in cancer therapy, may cause serious detrimental effects by inhibiting hippocampal neuroproliferation.


PKC isozymes Neonatal 5-HT1A receptor VEGFR1/2 Hippocampus 



Serotonin 1A receptor


8-OH-DPAT (5-HT1A-R agonist)


Myr-εV1-2 (N-Myr-EAVSLKPT) (a PKCε translocation inhibitor)

SU5416/S8442 (Semaxanib, VEGFR1/2 inhibitor) SGZ

Subgranular zone


U0126 (inhibitor of MEK)

W or WAY

WAY100635 (5-HT1A-R antagonist)



The authors express gratitude to Dr. Sudarshana Purkayastha for expert assistance in immunohistochemistry and Dr. Sara Rose Guariglia for help in confocal imaging.

Conflict of Interest

None of the authors have any conflict of interest.


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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • S. Samaddar
    • 1
  • B. Ranasinghe
    • 2
  • S. J. Tantry
    • 3
  • P. R. Debata
    • 4
  • P. Banerjee
    • 1
    • 2
    • 3
    • 4
    Email author
  1. 1.The College of Staten Island (CUNY)Staten IslandUSA
  2. 2.CUNY Graduate CenterThe College of Staten Island (CUNY)Staten IslandUSA
  3. 3.Department of ChemistryThe College of Staten Island (CUNY)Staten IslandUSA
  4. 4.Center for Developmental NeuroscienceThe College of Staten Island (CUNY)Staten IslandUSA

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