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Mutations

Mutations

Mutations

Mutations

Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...

Cancers Originate from Somatic Mutations in a Single Cell

Cancers Originate from Somatic Mutations in a Single Cell

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...

Viral Mutations

Viral Mutations

A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...

Accelerators

Accelerators

Accelerators in concrete serve as admixtures to speed up the hardening process, enabling the concrete to achieve early strength faster. Although accelerators do not necessarily impact the time it takes concrete to set, they reduce this time in practice. A common accelerator is calcium chloride, which is particularly useful for hastening early strength development in cold weather or for rapid repair jobs that require quick heat generation after mixing.
The effectiveness of calcium chloride can...

Accelerating Fluids

Accelerating Fluids

When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:

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Use of a Linear Accelerator for Conducting In Vitro Radiobiology Experiments

Use of a Linear Accelerator for Conducting In Vitro Radiobiology Experiments

Published on: May 26, 2019

Accelerating cancer without mutations.

Douglas E Brash^1,2,3

¹Department of Therapeutic Radiology, Yale School of Medicine, New Haven, United States.

|March 22, 2019

Summary

Inherited gene variants accelerate melanoma development in mice. These genetic changes influence cell behavior and environmental responses, impacting cancer progression.

Keywords:

RNA-binding protein cancer cancer biology melanoma modifier genes mouse ribosomes ultraviolet radiation

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Last Updated: Jan 27, 2026

Use of a Linear Accelerator for Conducting In Vitro Radiobiology Experiments

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Published on: May 26, 2019

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Next Generation Sequencing for the Detection of Actionable Mutations in Solid and Liquid Tumors

Next Generation Sequencing for the Detection of Actionable Mutations in Solid and Liquid Tumors

Published on: September 20, 2016

Area of Science:

Genetics
Oncology
Environmental Science

Background:

Melanoma is a significant health concern.
Genetic factors play a role in cancer development.
Environmental influences can modulate cancer risk.

Purpose of the Study:

To investigate the impact of inherited genetic variants on melanoma progression.
To understand how these variants interact with environmental factors.

Main Methods:

Utilized a mouse model for melanoma research.
Analyzed common inherited gene variants.
Assessed gene variants controlling cell-wide changes and environmental responses.

Main Results:

Specific inherited gene variants were found to accelerate melanoma.
These variants affect cellular processes.
Environmental responsiveness is linked to accelerated cancer growth.

Conclusions:

Common inherited gene variants can predispose individuals to faster melanoma development.
Gene variants that mediate cell-wide changes and environmental responses are critical.
Further research into these genetic-environmental interactions is warranted.