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Related Concept Videos

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Targeted Cancer Therapies

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The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
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The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
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Tight junctions are molecular seals between cells that prevent the leaking of fluids, ions, and other small solutes across cavities and compartments in multicellular organisms. They are mainly composed of claudin and occludin transmembrane proteins, and other proteins such as tricellulin and JAM (junctional adhesion molecule). All these proteins are 4-pass transmembrane proteins, except JAM, which is a single-pass transmembrane protein belonging to the immunoglobulin superfamily. The...
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Microtubules are dynamic structures that undergo cycles of catastrophe and rescue. The microtubules play a central role in cell division by forming the spindle apparatus for segregating the chromosomes. This makes them ideal targets for regulating dividing cells in tumors and malignant cancer cells. Microtubule stabilizing drugs help stabilize the microtubule formation and promote its polymerization. Paclitaxel was the first microtubule stabilizing agent used as anticancer drug in chemotherapy...
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The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which...
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Claudins in Cancer: A Current and Future Therapeutic Target.

Caroline Hana1, Nyein Nyein Thaw Dar1, Michael Galo Venegas1

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International Journal of Molecular Sciences
|May 11, 2024
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Claudins are key proteins in tight junctions, impacting cell movement and cancer metastasis. Targeting claudins, like claudin 18.2, shows promise for improving cancer treatment outcomes.

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Area of Science:

  • Molecular Biology
  • Cell Biology
  • Oncology

Background:

  • Claudins are integral membrane proteins crucial for tight junction integrity.
  • These proteins regulate paracellular permeability, ion transport, and cell migration.
  • Dysregulation of claudins is implicated in cancer progression, invasion, and metastasis.

Purpose of the Study:

  • To review the fundamental roles of claudins in biological processes.
  • To examine the expression patterns of claudins in normal and cancerous tissues.
  • To explore the therapeutic potential of targeting claudins for cancer treatment.

Main Methods:

  • Literature review of studies on claudin function and expression.
  • Analysis of research on claudin-targeted cancer therapies.
  • Synthesis of evidence regarding claudin involvement in cancer metastasis.

Main Results:

  • Claudins play vital roles in epithelial barrier function and cell signaling.
  • Aberrant claudin expression is a hallmark of many cancers.
  • Emerging therapies, including monoclonal antibodies and CAR T-cells targeting claudins, demonstrate therapeutic efficacy.

Conclusions:

  • Claudins are significant players in cancer biology, influencing metastasis and treatment response.
  • Targeting specific claudins, such as claudin 18.2, offers a promising strategy for novel cancer therapies.
  • Further research into claudin-based therapeutics could lead to improved patient outcomes in various cancers.