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Ch. 14 - Biomedical Applications: Vaccines, Diagnostics, Therapeutics, and Molecular Method
Norman-McKay- Microbiology: Basic and Clinical Principles 2nd Edition
Norman-McKay2nd EditionMicrobiology: Basic and Clinical PrinciplesISBN: 9780137661619Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoNorman-McKay 2nd EditionCh. 14 - Biomedical Applications: Vaccines, Diagnostics, Therapeutics, and Molecular MethodProblema 15
Capitolo 10, Problema 15

How could a CRISPR-Cas9 enter a human cell for genome editing purposes?

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1
Understand that CRISPR-Cas9 is a molecular tool composed of the Cas9 protein and a guide RNA (gRNA) that together can target specific DNA sequences for editing.
Recognize that to perform genome editing in human cells, the CRISPR-Cas9 components must be delivered inside the cells, crossing the cell membrane barrier.
Explore common delivery methods such as viral vectors (e.g., lentivirus, adenovirus) which can efficiently transport the CRISPR-Cas9 system into human cells by exploiting the virus's natural ability to infect cells.
Consider non-viral delivery methods like electroporation, where an electric pulse temporarily opens pores in the cell membrane allowing CRISPR-Cas9 molecules to enter, or lipid nanoparticles that encapsulate the CRISPR components and fuse with the cell membrane.
Evaluate the choice of delivery method based on factors like efficiency, cell type, potential immune response, and whether transient or stable expression of CRISPR-Cas9 is desired.

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CRISPR-Cas9 System

CRISPR-Cas9 is a genome editing tool derived from a bacterial immune system that uses a guide RNA to direct the Cas9 nuclease to a specific DNA sequence, enabling precise cutting and modification of the genome.
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CRISPR CAS

Cellular Delivery Methods

To introduce CRISPR-Cas9 into human cells, delivery methods such as viral vectors, lipid nanoparticles, or electroporation are used, each facilitating the transport of the CRISPR components across the cell membrane into the cytoplasm or nucleus.
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06:29
Scientific Method

Cell Membrane and Nuclear Entry

For genome editing, CRISPR-Cas9 must cross the cell membrane and often the nuclear envelope; understanding mechanisms like endocytosis, membrane fusion, or nuclear localization signals is essential to ensure the system reaches the DNA inside the nucleus.
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Entry & Uncoating of Enveloped Viruses by Membrane Fusion
Pratica correlata
Domanda del libro di testo

Place the following steps in order for a neutralization test:

a. Incubate cell culture for a few days

b. Add suspected infecting virus to the patient's serum

c. Inspect cell culture for viral infection

d. Extract serum from patient

e. Mix patient serum with virus and add the mixture to a cell culture

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Domanda del libro di testo

Describe one difference between a direct ELISA and an indirect ELISA.

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Domanda del libro di testo

How many copies could PCR make if we started with one copy of a template and performed 15 cycles of copying?

a. A few

b. A few hundred

c. A few thousand

d. Millions

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