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Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

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Cancer-Critical Genes II: Tumor Suppressor Genes01:05

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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.
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Cancer-Critical Genes I: Proto-oncogenes01:33

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Cancer02:18

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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.
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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.
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Related Experiment Video

Updated: Mar 28, 2026

Testing Targeted Therapies in Cancer using Structural DNA Alteration Analysis and Patient-Derived Xenografts
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Cancer Gene Profiling for Response Prediction.

B Michael Ghadimi1, Peter Jo2

  • 1Department of General, Visceral, and Pediatric Surgery, University Medical Center Göttingen, Georg-August-University, Robert-Koch-Str. 40, 37075, Göttingen, Germany. mghadim@uni-goettingen.de.

Methods in Molecular Biology (Clifton, N.J.)
|December 16, 2015
PubMed
Summary

Genomic technologies enable precise cancer molecular portraits, guiding personalized treatments. Identifying molecular markers for tumor response is crucial for effective, individualized cancer care and minimizing side effects.

Keywords:
Gene expression profilingMicroarraysPersonalized medicinePreoperative chemoradiotherapyRectal cancerResponse prediction

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Area of Science:

  • Genomics
  • Cancer Biology
  • Personalized Medicine

Background:

  • Genomic technologies offer unprecedented accuracy in characterizing cancer cells.
  • Preoperative cancer treatments vary in effectiveness, creating clinical challenges.
  • Tumor response and treatment toxicity are key limitations in current cancer strategies.

Purpose of the Study:

  • To highlight the importance of identifying molecular markers for predicting tumor response and treatment toxicity.
  • To emphasize the potential of comprehensive genomic analyses for developing personalized cancer medicine.

Main Methods:

  • Gene expression profiling
  • High-resolution mapping of genomic imbalances
  • Next-generation sequencing
  • Microarray technology

Main Results:

  • Genomic technologies allow for detailed molecular portraits of cancer cells.
  • Complex phenotypes like tumor responsiveness likely depend on multiple genes and pathways.
  • Simultaneous monitoring of thousands of genes can identify tumor-specific signatures.

Conclusions:

  • Personalized genomic medicine aims to tailor treatments based on individual tumor biology and genetic profiles.
  • Comprehensive interrogation of genetic pathways is essential for predicting treatment response and toxicity.
  • Microarray technology is a key tool for advancing personalized cancer care.