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Related Concept Videos

Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

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

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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.
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lncRNA - Long Non-coding RNAs02:39

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In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
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Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
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Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
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Cancer02:18

Cancer

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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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Related Experiment Video

Updated: Dec 22, 2025

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Decoding the Noncoding Cancer Genome.

Peter van Galen1

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Researchers developed a method to identify and validate cancer-causing mutations in noncoding DNA. This approach integrates whole-genome sequencing and epigenome editing to uncover the role of these genetic changes in cancer development.

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Area of Science:

  • Genomics
  • Cancer Biology
  • Epigenetics

Background:

  • Noncoding regions of the genome were once considered 'junk DNA' but are increasingly recognized for their role in gene regulation.
  • Understanding mutations in these regions is crucial as they can significantly impact cellular processes and contribute to disease.
  • Traditional sequencing methods have limitations in identifying and functionally assessing noncoding mutations.

Purpose of the Study:

  • To provide a comprehensive blueprint for identifying and functionally validating cancer-associated mutations in the noncoding genome.
  • To elucidate the contribution of noncoding genetic lesions to the development and progression of cancer.
  • To integrate cutting-edge genomic and epigenomic technologies for a deeper understanding of cancer genetics.

Main Methods:

  • Whole-genome sequencing (WGS) was employed to identify genetic variations across the entire genome, including noncoding regions.
  • High-throughput epigenome editing screens were utilized to functionally assess the impact of identified noncoding mutations.
  • Integration of WGS data with epigenome editing results allowed for the systematic validation of cancer-associated noncoding variants.

Main Results:

  • The study successfully identified a set of noncoding mutations with potential roles in cancer development.
  • Functional validation confirmed that specific noncoding genetic lesions can alter gene expression and contribute to oncogenic phenotypes.
  • The integrated approach demonstrated its power in uncovering previously uncharacterized cancer drivers in noncoding DNA.

Conclusions:

  • The developed blueprint offers a robust framework for the systematic investigation of noncoding mutations in cancer.
  • Noncoding genetic lesions are significant contributors to cancer etiology and represent a promising area for therapeutic targeting.
  • This research highlights the importance of exploring the entire genome, beyond protein-coding regions, for a complete understanding of cancer.