Table 1. Summary of electrophysiology-based screening of TPC agonists.
Based on chemical structures, LyNa-VAs were divided into two groups: LyNa-VA1.x and LyNa-VA2.x. EC50 and the average TPC2 currents (ITPC2) were calculated based on 3–5 whole-cell or whole-endolysosome recordings (see individual data in Table 1—source data 1) for each LyNa-VA, respectively.
| LyNa-VAs | Chemical name | Structure | EC50 (μM)* | ITPC2 (pA)** |
|---|---|---|---|---|
| LyNa-VA1.1 | Clomipramine |
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43 ± 2 | 945 ± 111 |
| LyNa-VA1.2 | Desipramine |
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87 ± 8 | 1120 ± 94 |
| LyNa-VA1.3 | Imipramine | ![]() |
112 ± 1 | 433 ± 94 |
| LyNa-VA1.4 | Amitriptyline |
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102 ± 3 | 876 ± 196 |
| LyNa-VA1.5 | Nortriptyline |
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52 ± 10 | 1916 ± 361 |
| Carbamazepine |
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No activation | No activation | |
| LyNa-VA2.1 | Chlorpromazine |
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60 ± 2 | 1101 ± 508 |
| LyNa-VA2.2 | Triflupromazine |
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63 ± 2 | 984 ± 294 |
| Phenothiazine |
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No activation | No activation |
*Data were obtained from whole-cell recordings at −140 mV.
**Data were obtained from whole endolysosome recordings with 100 µM of LyNa-VAs at −120 mV.








