Related Experiment Video

Updated: Aug 11, 2026

Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
12:42

Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo

Published on: January 7, 2019

Tumor chemosensitivity conferred by inserted herpes thymidine kinase genes: paradigm for a prospective cancer control

F L Moolten

    Cancer Research
    |October 1, 1986
    PubMed

    Insights

    This study introduces a novel gene therapy strategy for cancer. By creating mosaic tissues with drug-sensitive cells, tumors can be eradicated, offering a promising future for cancer treatment.

    Area of Science:

    • Oncology
    • Gene Therapy
    • Biochemistry

    Background:

    • Limited biochemical differences between normal tissues and tumors pose treatment challenges.
    • A prophylactic gene insertion strategy can create tissue mosaicism for drug sensitivity.
    • This approach ensures tumors will differ from normal cells, aiding targeted therapy.

    Purpose of the Study:

    • To test a gene insertion strategy for creating drug-sensitive tissue mosaicism.
    • To evaluate the efficacy of targeting neoplastic cells with a specific drug.
    • To assess the potential of this strategy for future cancer treatment.

    Main Methods:

    • Utilized neoplastic BALB/c murine cell lines engineered with the herpes thymidine kinase gene.
    • Exposed engineered cells to 9-([2-hydroxy-1-(hydroxymethyl)ethoxy]methyl)guanine, a herpes thymidine kinase-specific substrate.
    • Administered the drug to BALB/c mice bearing tumors derived from these cell lines.

    Main Results:

    • The drug exposure ablated the clonogenic potential of engineered cells in vitro.
    • Tumor-bearing mice treated with the drug exhibited uniform and complete tumor regression.
    • The results demonstrate the therapeutic potential of the gene insertion strategy.

    Conclusions:

    • The gene insertion strategy shows promise for cancer treatment by creating drug-sensitive tissue mosaicism.
    • Targeted drug therapy against engineered cells can lead to complete tumor eradication.
    • This approach may become valuable for human cancer therapy with further technological development.

    More Related Videos

    Dual Bioluminescence Imaging of Tumor Progression and Angiogenesis10:56

    Dual Bioluminescence Imaging of Tumor Progression and Angiogenesis

    Published on: August 1, 2019

    Testing Targeted Therapies in Cancer using Structural DNA Alteration Analysis and Patient-Derived Xenografts10:27

    Testing Targeted Therapies in Cancer using Structural DNA Alteration Analysis and Patient-Derived Xenografts

    Published on: July 25, 2020

    Related Concept Videos

    Targeted Cancer Therapies02:57

    Targeted Cancer Therapies

    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.
    There are several types of targeted therapies against specific...
    Treatment Resistant Cancers02:56

    Treatment Resistant Cancers

    Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
    Combination Therapies and Personalized Medicine02:50

    Combination Therapies and Personalized Medicine

    Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
    The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
    Cancer-Critical Genes II: Tumor Suppressor Genes01:05

    Cancer-Critical Genes II: Tumor Suppressor Genes

    Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
    When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
    Such genes that act...
    Tumor Immunotherapy01:27

    Tumor Immunotherapy

    Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
    Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase01:11

    Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase

    Genetic polymorphisms in drug targets have emerged as critical determinants of interindividual variability in drug response and toxicity. Pharmacogenomic investigations increasingly focus on identifying these variations to personalize and optimize therapeutic interventions. A drug target may be a receptor, enzyme, or signaling protein involved in pharmacologic responses or disease-related pathways. While early pharmacogenetic studies focused primarily on drug metabolism, current research...