Related Experiment Video

Updated: Jun 11, 2026

Evaluating the Effectiveness of Cancer Drug Sensitization In Vitro and In Vivo
09:19

Evaluating the Effectiveness of Cancer Drug Sensitization In Vitro and In Vivo

Published on: February 6, 2015

[Chemoprevention of cancer]

H Fujiki

    Gan to Kagaku Ryoho. Cancer & Chemotherapy
    |December 1, 1986
    PubMed

    Insights

    Researchers identified new anti-tumor promoters, including quercetin, anti-inflammatory agents, and tannic acids like epigallocatechin gallate from tea. Sarcophytol A also shows promise in inhibiting tumor promotion in mouse skin models.

    Area of Science:

    • Oncology
    • Pharmacology

    Context:

    • Tumor promotion is a critical stage in carcinogenesis, often targeted by chemopreventive agents.
    • Retinoids are established anti-tumor promoters, inhibiting 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced skin tumor promotion in mice.
    • Short-term screening tests are utilized to identify potential anti-tumor promoter compounds.

    Purpose:

    • To screen and identify novel compounds that inhibit tumor promotion.
    • To validate the efficacy of identified compounds using long-term in vivo carcinogenesis experiments.
    • To investigate the anti-tumor promotion activity of sarcophytol A.

    Summary:

    • Experimental screening identified quercetin (a calmodulin antagonist), anti-inflammatory agents, and tannic acids as novel anti-tumor promoters.
    • (-)-Epigallocatechin gallate, a component of tea, demonstrated anti-tumor promotion activity.
    • Sarcophytol A was found to inhibit tumor promotion in mouse skin, with its mechanism currently under investigation.
    • The study also briefly touches upon primary and secondary cancer chemoprevention strategies.

    Impact:

    • Identifies new classes of compounds with potential for cancer chemoprevention.
    • Highlights the anti-tumor promotion potential of natural compounds like epigallocatechin gallate and sarcophytol A.
    • Suggests the need for improved short-term screening methods for anti-tumor promoters.

    More Related Videos

    Sample Extraction and Simultaneous Chromatographic Quantitation of Doxorubicin and Mitomycin C Following Drug Combination Delivery in Nanoparticles to Tumor-bearing Mice08:57

    Sample Extraction and Simultaneous Chromatographic Quantitation of Doxorubicin and Mitomycin C Following Drug Combination Delivery in Nanoparticles to Tumor-bearing Mice

    Published on: October 5, 2017

    Quantifiable and Inexpensive Cell-Free Fluorescent Method to Confirm the Ability of Novel Compounds to Chelate Iron05:36

    Quantifiable and Inexpensive Cell-Free Fluorescent Method to Confirm the Ability of Novel Compounds to Chelate Iron

    Published on: February 23, 2024

    Related Concept Videos

    Cancer02:18

    Cancer

    Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
    Cancer Prevention02:59

    Cancer Prevention

    Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
    Some...
    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...
    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 Prevention02:59

    Cancer Prevention

    Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
    Some...
    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...