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CRISPR-Cas9-Guided Genetic Manipulation of Patient-Derived Brain Tumor Cells

Yujin Suk^1,2,3, Erika Apel^1,2, Stefan Custers^1,2

¹Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada.

Methods in Molecular Biology (Clifton, N.J.)

|June 24, 2025

Abstract:

CRISPR-Cas9 technology has revolutionized scientific research and has provided scientists with the ability to change DNA bases specifically and precisely at predetermined sites. The CRISPR-Cas9 knockout (KO) and activation (a) platforms developed by Hart et al. and Sanson et al. allow for RNA-directed genome editing to both decrease or increase gene expression, respectively [1, 2]. In this chapter the two techniques, CRISPR KO and CRISPRa, will be discussed and explained in further detail for optimized application against patient derived brain tumor cells.

Keywords:

CRISPR Cas9 Cloning Gene activation Gene editing Gene knock out Transduction Transfection

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Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced...

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The CRISPR-Cas system serves as a bacterial defense mechanism against invading genetic elements such as viruses and plasmids, forming the foundation for its adaptation as a powerful genome-editing tool. Originally discovered in prokaryotes, this system has been repurposed to revolutionize genetic engineering across a wide range of organisms, including plants, animals, and humans. The core component, Cas9, is an endonuclease derived from Streptococcus pyogenes, capable of introducing...

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