Title : Sensitization of cancer (stem) cells by Doxycycline to Vitamin C, Berberine, Chloroquine and others
link : Sensitization of cancer (stem) cells by Doxycycline to Vitamin C, Berberine, Chloroquine and others
Sensitization of cancer (stem) cells by Doxycycline to Vitamin C, Berberine, Chloroquine and others
Dear all,
I recently came across the below study, which I thought was rather interesting:
https://ift.tt/2JbxiIc
The authors used incrementally higher dosages of Doxycycline (12.5 uM, 25 u.M, 50 uM) in vitro on cancer cells in an effort to create metabolically inflexible cells and to test whether these would be then be more sensitive to metabolic inhibitors, including natural agents (Vitamin C and Berberine) and various meds (Atovaquone, Irinotecan, Sorafenib, Niclosamide, Chloroquine, and Stiripentol).
The cancer cells in the study ended up being highly sensitized to some of these agents, for example Vitamin C (4-10 x more sensitive), Berberine and Chloroquine. It's noteworthy that, following Docycycline treatment, cells became sensitive to Vitamin C at a dosage level which is reachable orally (IC-50 = within the range of 100uM - 250 uM). My understanding is that newer Vitamin C formulations using oral Liposomal delivery (e.g.: https://ift.tt/2EbwRKf) can reach concentrations of up to 400 uM in the blood, a level at which cell elimination in vitro was in excess of 90%).
I'm curious if these results could be replicated at least directionally in a human setting, as it would be a rather cost effective and non-toxic approach. Any thoughts?
Best regards,
John
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