Hexa (ethylene glycol) derivative of benzothiazole aniline promotes dendritic spine formation through the RasGRF1-Ras dependent pathway

Nathanael J. Lee, Jung Min Song, Hyun Ji Cho, You Me Sung, Taehee Lee, Andrew Chung, Sung Ha Hong, Jessica L. Cifelli, Mark Rubinshtein, Lila K. Habib, Christina C. Capule, R. Scott Turner, Daniel T S Pak, Jerry Yang, Hyang Sook Hoe

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Our recent study demonstrated that an amyloid-β binding molecule, BTA-EG4, increases dendritic spine number via Ras-mediated signaling. To potentially optimize the potency of the BTA compounds, we synthesized and evaluated an amyloid-β binding analog of BTA-EG4 with increased solubility in aqueous solution, BTA-EG6. We initially examined the effects of BTA-EG6 on dendritic spine formation and found that BTA-EG6-treated primary hippocampal neurons had significantly increased dendritic spine number compared to control treatment. In addition, BTA-EG6 significantly increased the surface level of AMPA receptors. Upon investigation into the molecular mechanism by which BTA-EG6 promotes dendritic spine formation, we found that BTA-EG6 may exert its effects on spinogenesis via RasGRF1-ERK signaling, with potential involvement of other spinogenesis-related proteins such as Cdc42 and CDK5. Taken together, our data suggest that BTA-EG6 boosts spine and synapse number, which may have a beneficial effect of enhancing neuronal and synaptic function in the normal healthy brain.

Original languageEnglish (US)
Pages (from-to)284-295
Number of pages12
JournalBiochimica et Biophysica Acta - Molecular Basis of Disease
Issue number2
StatePublished - Feb 1 2016

Bibliographical note

Funding Information:
This work was supported by Georgetown University faculty tenure track start package-up and KBRI basic research program through Korea Brain Research Institute funded by the Ministry of Science, ICT and Future Planning ( No. 2231-415 ) (H.S.H). M.R., L.K.H., C.C., J.L.C. and J.Y. acknowledge support from the Alzheimer's Disease Research Center ( 3P50 AG005131 ) and the Alzheimer's Association ( NIRG-08-91651 ). L.K.H. acknowledges support from a Kuwait University fellowship .

Publisher Copyright:
© 2015 Elsevier B.V.


  • BTA-EG6
  • Dendritic spine
  • Rap signaling
  • Ras signaling


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