REV-ERB Agonists Block Autophagy in Cancer Cells

    Cancer Discovery
    |January 21, 2018
    PubMed

    Insights

    Disrupting circadian clock components harms cancer cell survival. This research shows targeting the body

    Area of Science:

    • Chronobiology
    • Cancer Biology
    • Molecular Oncology

    Background:

    • The circadian clock regulates numerous cellular processes.
    • Disruptions in circadian rhythms are linked to cancer development and progression.
    • Key clock components are potential targets for cancer therapy.

    Purpose of the Study:

    • To investigate the impact of disrupting circadian clock components on cancer cell viability.
    • To explore the therapeutic potential of targeting circadian clock mechanisms in cancer.

    Main Methods:

    • Utilized *in vitro* cell culture models.
    • Employed *in vivo* preclinical cancer models.
    • Assessed cancer cell viability following manipulation of circadian clock genes/proteins.

    Main Results:

    • Disruption of specific circadian clock components significantly reduced cancer cell viability in both *in vitro* and *in vivo* settings.
    • Targeting the circadian clock demonstrated a direct negative effect on tumor cell survival and proliferation.

    Conclusions:

    • Circadian clock components are critical for cancer cell survival.
    • Targeting the circadian clock represents a promising strategy for novel cancer therapies.

    Related Concept Videos

    Autophagy01:27

    Autophagy

    Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
    An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
    5.9K
    Adrenergic Agonists: Therapeutic Uses01:30

    Adrenergic Agonists: Therapeutic Uses

    Adrenergic agonists have diverse therapeutic uses across various medical conditions and emergencies.
    Emergency and Intensive Care Unit (ICU) applications: Pressor agents increase blood pressure, heart rate, and contractility in shock and organ failure situations. Dopamine can induce vasodilation and stimulate adrenoceptors. Endogenous catecholamines are effective in treating cardiogenic shock. α2-agonists like clonidine can reverse anesthesia-induced hypertension.
    Allergies and...
    2.0K
    Glucagon-like Receptor Agonists01:24

    Glucagon-like Receptor Agonists

    Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
    GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
    1.0K
    Drug-Receptor Interaction: Agonist01:25

    Drug-Receptor Interaction: Agonist

    Agonists are drugs that interact with specific receptors in the body to produce a biological response. When an agonist binds to a receptor, it activates or enhances the receptor's function, leading to physiological effects. The interaction between agonist drugs and receptors is crucial for their therapeutic action in various medical treatments.
    Agonists can bind to receptors in different ways. Some agonists bind directly to the receptor's active site, mimicking the endogenous...
    4.2K
    Adrenergic Agonists: Therapeutic Classification01:18

    Adrenergic Agonists: Therapeutic Classification

    Adrenergic agonists can be classified based on their therapeutic uses and mechanisms of action. They serve various purposes in clinical applications.
    Vasopressor or pressor agents: They increase blood pressure and function as cardiac stimulants. Examples include endogenous catecholamines (norepinephrine and dopamine) and synthetic agents (phenylephrine).
    Bronchodilators: β2-agonists can relax bronchial muscles and widen airways. They are commonly used for treating obstructive pulmonary...
    1.7K
    Block Diagram Reduction01:22

    Block Diagram Reduction

    The process of deriving the transfer function of a control system often involves reducing its block diagram to a single block. This simplification can be achieved through a series of strategic operations, including relocating branch points and comparators. These operations preserve the overall function of the system while allowing for easier manipulation and combination of blocks.
    The first step in this process is the identification and relocation of a branch point. A branch point, where a...
    574