Somatic Mutation
Somatic Mutation - Related Videos
02:21
Cancers Originate from Somatic Mutations in a Single Cell
0 Views •
2021
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...
02:21
Cancers Originate from Somatic Mutations in a Single Cell
0 Views •
2023
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...
10:41
Wild-type Blocking PCR Combined with Direct Sequencing as a Highly Sensitive Method for Detection of Low-Frequency Somatic Mutations
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Cited by 5 •
2017
Wild-type blocking PCR followed by direct sequencing offers a highly sensitive method of detection for low frequency somatic mutations in a variety of sample types.
05:11
Wild-Type Blocking PCR to Detect Low-Frequency Somatic Mutations
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2025
This video describes wild-type blocking polymerase chain reaction, or WTB-PCR, which detects somatic mutations. The PCR-based technique uses a locked nucleic acid, or LNA, an oligonucleotide that binds to its complementary wild-type allele and blocks its elongation. The blocking selectively allows the amplification of low-level mutant alleles over their wild-type variants in the sample.
07:53
Quantification of Colonic Stem Cell Mutations
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Cited by 1 •
2015
We report significant improvements for the reproducible measurement of somatic colonic stem cell mutations after exposure of mice to potential DNA damaging agents.
FAQs
Several biological events can generate somatic mutations: DNA replication errors, environmental damage, and failures in DNA repair. Replication mistakes alter the sequence as cells copy their DNA, while inadequate repair allows damage to remain. These different origins matter because they identify processes that can create altered cells during the life of an organism.
Affected cells can transmit the altered DNA to descendant cells when they divide, creating a group of related cells that shares the change. This local propagation differs from transmission to offspring, which is generally not expected for somatic alterations. Tracking such cell populations helps explain how genetically distinct groups of cells arise within one tissue.
The outcome depends on how the DNA change affects cell function. Some somatic mutations produce no detectable effect, whereas others alter cellular activity. A mutation that gives a cell a growth advantage can promote clonal expansion, meaning the altered population increases as descendant cells multiply. This process can contribute to cancer development.
Mutation profiling connects observed DNA changes with clinical decision-making. In cancer-related work, the resulting information can support diagnosis, help estimate prognosis, and guide selection of targeted therapies. Its value comes from linking the molecular features of a disease with decisions about how that disease is characterized and managed.
Studying somatic mutations helps researchers investigate why cells within an organism can differ and how those differences relate to aging. Because affected cells pass the change to descendants during division, mutations can contribute to persistent cellular variation. This perspective also helps researchers examine tissue diversity and its relationship to disease progression.
Somatic mutation research provides a way to connect DNA changes with the course of disease. Researchers can examine how an altered cell gains a growth advantage, expands clonally, and contributes to tumor development. The same framework supports investigation of disease progression more broadly, making these mutations relevant to both fundamental biology and medically oriented research.