Related Experiment Video

Updated: Jul 25, 2026

Preclinical Assessment of the Bioactivity of the Anticancer Coumarin OT48 by Spheroids, Colony Formation Assays, and Zebrafish Xenografts
09:20

Preclinical Assessment of the Bioactivity of the Anticancer Coumarin OT48 by Spheroids, Colony Formation Assays, and Zebrafish Xenografts

Published on: June 26, 2018

Antitumor studies of 2-amino-2-thiazoline and other tumor-modifying agents

M J Pine, E A Mirand, J L Ambrus

    Journal of Medicine
    |January 1, 1983
    PubMed

    Insights

    2-amino-2-thiazoline (AT) showed antitumor activity against late-stage tumors in mice. However, AT and thioproline (TC) did not demonstrate effectiveness as reverse transformation agents in this study.

    Area of Science:

    • Oncology
    • Pharmacology
    • Immunology

    Background:

    • 2-amino-2-thiazoline (AT) and thioproline (TC) were previously suggested as reverse transformation agents.
    • Investigating novel therapeutic strategies for cancer is crucial.

    Purpose of the Study:

    • To evaluate the antitumor and reverse transformation potential of AT and TC in rodent models.
    • To assess the efficacy of AT and TC against various tumor types and viral infections.

    Main Methods:

    • Administration of AT and TC to rodents with induced or transplanted tumors.
    • Assessment of tumor incidence, survival rates, and cellular differentiation.
    • Evaluation of AT and TC effects on Friend leukemia virus infection in mice.

    Main Results:

    • AT reduced tumor incidence in carcinogen-treated mice and improved survival in Friend virus-infected mice.
    • AT was ineffective against other mouse tumors and did not impact tumor cell differentiation or transformation.
    • TC showed minimal effects on tested tumor systems.
    • Other agents like indomethacin and diethyldithiocarbamate (DTC) had limited efficacy against Friend virus infection.

    Conclusions:

    • AT exhibits significant antitumor activity by inhibiting late stages of tumor progression.
    • Neither AT nor TC demonstrated efficacy as agents of reverse transformation.
    • Further research is needed to explore the specific mechanisms of AT's late-stage antitumor effects.

    More Related Videos

    Potentiation of Anticancer Antibody Efficacy by Antineoplastic Drugs: Detection of Antibody-drug Synergism Using the Combination Index Equation15:04

    Potentiation of Anticancer Antibody Efficacy by Antineoplastic Drugs: Detection of Antibody-drug Synergism Using the Combination Index Equation

    Published on: January 19, 2019

    Transfer of Manipulated Tumor-associated Neutrophils into Tumor-Bearing Mice to Study their Angiogenic Potential In Vivo08:19

    Transfer of Manipulated Tumor-associated Neutrophils into Tumor-Bearing Mice to Study their Angiogenic Potential In Vivo

    Published on: July 20, 2019

    Related Concept Videos

    Drugs that Stabilize Microtubules01:15

    Drugs that Stabilize Microtubules

    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...
    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...
    Drugs that Destabilize Microtubules01:10

    Drugs that Destabilize Microtubules

    Microtubules are dynamic structures and can be regulated by microtubule targeting agents (MTAs). Microtubule destabilizing drugs are a class of MTAs that destabilize and prevent microtubules' polymerization. Both natural and synthetic chemicals can be found under this class of drugs. Vincristine and vinblastine, two vinca alkaloids, and colchicine were among the first to be discovered. These drugs can affect cells in various ways, either by inducing a change in cell morphology, preventing...
    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...