Journal article Open Access

First Demonstration of Positive Allosteric-like Modulation at the Human Wild Type Translocator Protein (TSPO)

Narlawar, Rajeshwar; Werry, Eryn L; Scarf, Alana M; Hanani, Raphy; Chua, Sook Wern; King, Victoria A; Barron, Melissa L; Martins, Ralph N; Ittner, Lars M; Rendina, Louis M; Kassiou, Michael

We show that changing the number and position of nitrogen atoms in the heteroatomic core of a pyrazolopyrimidine acetamide is sufficient to induce complex binding to wild type human TSPO. Only compounds with this complex binding profile lacked intrinsic effect on glioblastoma proliferation but positively modulated the antiproliferative effects of a synthetic TSPO ligand. To the best of our knowledge this is the first demonstration of allosteric-like interaction at the wild type human TSPO.

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