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-Structure paper
| タイトル | Pathway-selective 5-HTR agonist as a rapid antidepressant strategy. |
|---|---|
| ジャーナル・号・ページ | Cell, Vol. 188, Issue 25, Page 7222-7237.e24, Year 2025 |
| 掲載日 | 2025年12月11日 |
著者 | Chunyu Wang / Nan Zhang / Yujie Shao / Tao Li / Mengna Zhang / Meng Gao / Yaqi Liang / Yumeng Wang / Tian Xue / Yiming Shi / He Chen / Can Cao / ![]() |
| PubMed 要旨 | Presynaptic 5-HTR autoreceptors predominantly signal through G protein, mediating feedback inhibition that hampers the therapeutic efficacy of conventional antidepressants. By contrast, postsynaptic ...Presynaptic 5-HTR autoreceptors predominantly signal through G protein, mediating feedback inhibition that hampers the therapeutic efficacy of conventional antidepressants. By contrast, postsynaptic heteroreceptors mainly couple to G, which promotes antidepressant responses. However, selectively activating heteroreceptors while bypassing the negative feedback induced by autoreceptors remains a significant challenge. Here, we characterized the G subtype signaling profiles of 5-HTR and determined its structures in complex with six agonists and three distinct G family proteins: G, G, and G. Combined with functional analysis, we elucidated the mechanisms underlying diverse agonist recognition modes and G subtype signaling selectivity of 5-HTR. Furthermore, we designed a pathway-selective agonist, TMU4142, which exhibits high G activity while minimizing G activation. Remarkably, TMU4142 demonstrated rapid antidepressant-like effects in a mouse model of depression. Collectively, these findings suggest that distinguishing heteroreceptors from autoreceptors based on their distinct downstream G signaling pathways could be a promising strategy to develop fast-acting antidepressants. |
リンク | Cell / PubMed:41232528 |
| 手法 | EM (単粒子) |
| 解像度 | 2.47 - 2.86 Å |
| 構造データ | EMDB-65104, PDB-9vj5: EMDB-65105, PDB-9vj6: EMDB-65110, PDB-9vje: EMDB-65111, PDB-9vjf: EMDB-65112, PDB-9vjg: EMDB-65196, PDB-9vmy: EMDB-65210, PDB-9vnf: |
| 化合物 | ![]() PDB-1esa: ![]() ChemComp-CLR: ![]() ChemComp-T7M: ![]() PDB-1esc: ![]()
ChemComp-YLX: ![]() PDB-1ese: ![]() PDB-1es2: ![]() PDB-1es4: |
| 由来 |
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キーワード | MEMBRANE PROTEIN / signal transduction |
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