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Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the...
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Packaging HIV- or FIV-based Lentivector Expression Constructs & Transduction of VSV-G Pseudotyped Viral Particles
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Risks Associated With Lentiviral Vector Exposures and Prevention Strategies.

Ryan Schlimgen1, John Howard, Dawn Wooley

  • 1Partners HealthCare, Boston, Massachusetts (Dr Schlimgen); National Institute for Occupational Safety and Health, Washington, District of Columbia (Dr Howard); Wright State University, Detroit, Michigan (Dr Wooley); Emory University, Atlanta, Georgia (Ms Thompson); Dana Farber Cancer Institute (Dr Baden, Ms Byers); Brigham and Women's Hospital (Dr Baden); Harvard Medical School, Boston, Massachusetts (Drs Baden, Christiani, Gelfand, Vyas); University of California Los Angeles, Los Angeles, California (Drs Yang, Hudson); Massachusetts General Hospital (Drs Christiani, Gelfand, Vyas); Harvard TH Chan School of Public Health (Dr Christiani); Boston University School of Medicine, Boston (Dr Mostoslavsky); Massachusetts Institute of Technology, Cambridge (Dr Diamond); Environmental Health and Engineering (Ms Duane); Occupational and Environmental Health Network, Boston, Massachusetts (Dr Winters); Occupational Medicine consultant, Los Altos, California (Dr Fujimoto).

Journal of Occupational and Environmental Medicine
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Lentiviral vectors (LVVs) pose occupational risks. This review offers a framework for assessing LVV exposure risks and recommends antiviral treatment for exposed staff.

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Area of Science:

  • Biotechnology
  • Gene Therapy
  • Occupational Health

Background:

  • Lentiviral vectors (LVVs) are increasingly used in research and clinical settings.
  • Occupational exposure risks from LVVs require thorough assessment.
  • Existing data on adverse events from clinical studies inform risk evaluation.

Purpose of the Study:

  • To review the potential risks associated with occupational exposure to lentiviral vectors.
  • To provide a framework for risk assessment and communication for researchers and safety professionals.
  • To offer recommendations for tracking exposures and managing potential harm.

Main Methods:

  • Review of existing literature on lentiviral vector safety and adverse events.
  • Development of a risk assessment and communication framework.
  • Formulation of recommendations for occupational health and regulatory bodies.

Main Results:

  • Lentiviral vectors present potential occupational hazards that necessitate careful management.
  • A structured approach is proposed for evaluating and communicating LVV exposure risks.
  • Antiviral drugs approved for HIV show theoretical benefit, with a recommended 7-day regimen of integrase inhibitors.

Conclusions:

  • Effective risk management strategies are crucial for safe handling of lentiviral vectors.
  • Standardized tracking of LVV exposures is needed to evaluate long-term outcomes.
  • Prompt administration of specific antiviral therapies may mitigate risks following LVV exposure.