| Bioactivity | Mefloquine hydrochloride (Mefloquin hydrochloride), a quinoline antimalarial agent, is an anti-SARS-CoV-2 entry inhibitor. Mefloquine hydrochloride is also a K+ channel (KvQT1/minK) antagonist with an IC50 of ~1 μM. Mefloquine hydrochloride can be used for malaria, systemic lupus erythematosus and cancer research[1][2][3]. |
| Invitro | Mefloquine hydrochloride selectively inhibits prostate cancer (PCa) cell growth with an IC50 of ~10 μM. Mefloquine hydrochloride also induces hyperpolarization of the mitochondrial membrane potential (MMP), as well as ROS generation[2].Mefloquine hydrochloride (10 μM)-mediated ROS simultaneously downregulated Akt phosphorylation and activated ERK, JNK and AMPK signaling in PC3 cells[2].Mefloquine shows higher anti-SARS-CoV-2 activity than Hydroxychloroquine in VeroE6/TMPRSS2 and Calu-3 cells, with IC50 of 1.28 μM, IC90 of 2.31 μM, and IC99 of 4.39 μM in VeroE6/TMPRSS2 cells. Mefloquine inhibits viral entry after viral attachment to the target cell[3]. |
| In Vivo | Mefloquine hydrochloride (5 mg/kg; i.p.; daily; 14 days) reverses the lower vertebral cancellous bone volume and bone formation; and has modest effects on cortical bone volume, thickness, and moment of inertia in old mice[4]. Animal Model: |
| Name | Mefloquine hydrochloride |
| CAS | 51773-92-3 |
| Formula | C17H17ClF6N2O |
| Molar Mass | 414.77 |
| Appearance | Solid |
| Transport | Room temperature in continental US; may vary elsewhere. |
| Storage | 4°C, sealed storage, away from moisture *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture) |
| Reference | [1]. Kang J, et al. Interactions of the antimalarial drug mefloquine with the human cardiac potassium channels KvLQT1/minK andHERG. J Pharmacol Exp Ther. 2001 Oct;299(1):290-6. [2]. Yan KH, et al. Mefloquine exerts anticancer activity in prostate cancer cells via ROS-mediated modulation of Akt, ERK, JNK and AMPK signaling. Oncol Lett. 2013 May;5(5):1541-1545. [3]. Kaho Shionoya, et al. Mefloquine, a Potent Anti-severe Acute Respiratory Syndrome-Related Coronavirus 2 (SARS-CoV-2) Drug as an Entry Inhibitor in vitro. Front Microbiol. 2021 Apr 30;12:651403. [4]. Rafael Pacheco-Costa, et al. Reversal of loss of bone mass in old mice treated with mefloquine. Bone. 2018 Sep;114:22-31. |
Mefloquine hydrochloride
CAS: 51773-92-3 F: C17H17ClF6N2O W: 414.77
Mefloquine hydrochloride (Mefloquin hydrochloride), a quinoline antimalarial agent, is an anti-SARS-CoV-2 entry inhibito
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