Chloroquine mode of autophagy inhibition

Discussion in 'Canadian Drugs' started by Deellaaxops, 08-Mar-2020.

  1. tiol-1 Well-Known Member

    Chloroquine mode of autophagy inhibition


    Chloroquine has been extensively used in mass drug administrations, which may have contributed to the emergence and spread of resistance. It is recommended to check if chloroquine is still effective in the region prior to using it.

    Chloroquine panreatic cancer Do you need a baseline eye exam before taking hydroxychloroquine

    Autophagy Inhibitors. Click to enlarge. Autophagy is an orchestrated homeostatic process to eliminate unwanted proteins and damaged organelles. The autophagic process is also used to remove intracellular microbial pathogens. Among them, only CQ and its derivate hydroxychloroquine HCQ are FDA-approved drugs and are thus currently the principal compounds used in clinical trials aimed to treat tumors through autophagy inhibition. However, the precise mechanism of how CQ blocks autophagy remains to be firmly demonstrated. Up until recently, inhibition of the late stage of autophagy was thought to be the major mechanism of chloroquine-mediated cancer cells death. However, recent research provided compelling evidence that autophagy-inhibiting activities of chloroquine are dispensable for its ability to suppress tumor cells growth.

    The Centers for Disease Control and Prevention recommend against treatment of malaria with chloroquine alone due to more effective combinations. In areas where resistance is present, other antimalarials, such as mefloquine or atovaquone, may be used instead.

    Chloroquine mode of autophagy inhibition

    Inhibition of autophagy with bafilomycin and chloroquine decreases., Chloroquine inhibits autophagic flux by decreasing autophagosome.

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  4. The antimalarial drug chloroquine CQ disrupts autophagy by inhibiting the acidification of the lysosomes that fuse with the autophagosomes, thereby preventing the degradation of metabolic stress products and inducing apoptosis. Chloroquine-mediated inhibition of autophagy has been demonstrated in melanoma.

    • Inhibition of autophagy with chloroquine is effective in melanoma..
    • Frontiers Re-purposing Chloroquine for Glioblastoma..
    • What is the best applicable inhibitor of autophagy?.

    Autophagy has a pro-tumorigenic role in established tumors and consequently the vast majority of clinical trials focus on autophagy inhibition in cancer. Over the last decade, a dozen Phase I and I/II clinical trials have been completed and published using the autophagy inhibitors, Chloroquine CQ or hydroxychloroquine HCQ in cancer. These. In addition, chloroquine pre-treatment followed by taxol 10 nM treatment did not show significant toxicity towards non-carcinomas WI38 cells lung fibroblast cells. Thus autophagy inhibition by CQ pre-treatment can be used as a fruitful strategy to combat the phenomenon of paclitaxel resistance development as well as metastasis in lung cancer. Targeting the inhibition of autophagy in cancer patients would remove the tumor-protective properties that autophagy is believed to have established in cancer. Therapies being investigated target the lysosome portion of the autophagy process and include the medications chloroquine and hydroxychloroquine.

     
  5. Stawrog Well-Known Member

    Plaquenil (hydroxychloroquine) belongs to a group of medicines called quinolines. Lupus & Plaquenil/Pain - Treating Lupus with Anti-Malarial Drugs Johns Hopkins Lupus. Plaquenil What You Need to Know - Kaleidoscope Fighting Lupus
     
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    Plaquenil Oral Uses, Side Effects, Interactions, Pictures. Find patient medical information for Plaquenil Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.

    Plaquenil - FDA prescribing information, side effects and uses