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Related Concept Videos

CRISPR01:59

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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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Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
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Evidence for gene essentiality in Leishmania using CRISPR.

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Investigating gene essentiality in Leishmania is crucial for drug discovery. The ribosomal RNA promoter (rRNA-P) stable CRISPR protocol successfully generated viable gene deletion mutants for 8 genes previously untargetable by the T7 transient protocol.

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Area of Science:

  • Parasitology
  • Molecular Biology
  • Genetics

Background:

  • Determining gene essentiality in Leishmania is vital for identifying drug targets and understanding parasite biology.
  • CRISPR gene editing has enhanced gene targeting efficiency in Leishmania.
  • Two primary CRISPR methods exist: the stable rRNA-P protocol and the transient T7 protocol.

Purpose of the Study:

  • To evaluate the efficacy of the rRNA-P stable CRISPR protocol for targeting genes in Leishmania that were refractory to the T7 transient protocol.
  • To expand the toolkit for investigating gene essentiality in Leishmania.

Main Methods:

  • Utilized the rRNA-P stable CRISPR gene editing protocol.
  • Targeted 22 Leishmania genes for which null mutants could not be generated using the T7 transient protocol.

Main Results:

  • Successfully generated viable null mutants for 8 out of the 22 targeted Leishmania genes.
  • Demonstrated that the rRNA-P stable protocol can overcome limitations of the T7 transient protocol.

Conclusions:

  • The rRNA-P stable protocol is a valuable tool for investigating gene essentiality in Leishmania.
  • Combining both rRNA-P stable and T7 transient protocols offers a comprehensive approach to Leishmania gene essentiality studies.