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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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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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Updated: Jan 1, 2026

Generation of Defined Genomic Modifications Using CRISPR-CAS9 in Human Pluripotent Stem Cells
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Using the 4-S Framework to Guide Conversations With Patients About CRISPR.

Lisa S Lehmann1

  • 1An associate professor of medicine at Harvard Medical School in Boston, where she is also an associate professor of health policy and management at the Harvard T.H. Chan School of Public Health, and previously served as executive director of the National Center for Ethics in Health Care for the Veterans Health Administration and is currently chief medical officer for the VA New England Healthcare System.

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Summary

Patients with genetic diseases may ask doctors about embryo gene editing. A 4-S framework (safety, significance, succeeding generations, social consequences) can guide physicians in discussing CRISPR technology with patients.

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Area of Science:

  • Medical Ethics
  • Genetics
  • Reproductive Medicine

Background:

  • Patients with genetic diseases desire biological children.
  • Gene editing technologies like CRISPR offer potential reproductive options.
  • Physicians require guidance for patient consultations on embryo gene editing.

Purpose of the Study:

  • To provide a framework for physicians to discuss embryo gene editing with patients.
  • To facilitate informed patient decision-making regarding genetic interventions.

Main Methods:

  • Application of the 4-S framework: Safety, Significance of harm to be averted, impact on Succeeding generations, and Social consequences.
  • Guiding clinician responses to patient queries about CRISPR technology.

Main Results:

  • The 4-S framework offers a structured approach to complex ethical considerations.
  • Facilitates comprehensive discussions covering multiple facets of gene editing.

Conclusions:

  • The 4-S framework equips clinicians to address patient questions about embryo gene editing.
  • Promotes ethical and informed patient care in the context of emerging genetic technologies.