Please refer to The University of Chicago Biosafety Manual for supplementary information about the concepts presented in this training module.

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2 Please refer to The University of Chicago Biosafety Manual for supplementary information about the concepts presented in this training module. 2

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4 Risk Groups: Classification given to infectious microorganisms/pathogens based on hazard. Characteristics taken into account when performing a risk assessment include: -Capability to infect and cause disease in a susceptible human or animal host -Infectious dose -Virulence as measured by the severity of the disease -Route of transmission of the natural disease and transmissibility -Availability of preventive measures and effective treatments for the disease -Stability in the environment -Host range and endemic nature Risk groups correlate with but do not equate biosafety levels. Biosafety Level: Description of the microbiological practices, safety equipment, and facility safeguards for the corresponding level of risk associated with handling a particular agent. Determination of the appropriate biosafety level for working with an organism will take into account: -The agent s risk group -Nature of work being conducted and procedural protocols -Origin of agent indigenous or exotic -Experience of staff 4

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6 Biosafety Level 1 (BSL-1) relies on standard microbiological practices to manage RG1 organisms. There are no special containment or facility design requirements other than a sink for hand washing. 6

7 All of the standard microbiological practices conducted at BSL-1 are implemented at BSL-2 as well. BSL-2 builds upon BSL-1 containment by adding engineering features and safety equipment, protective clothing, biohazard signage, and specialized training for staff. 7

8 At BSL-3 the use of primary and secondary barriers is emphasized, requiring special engineering and design features. 8

9 BSL-4 work is performed in an isolated facility with complex, specialized ventilation requirements and waste management systems. 9

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15 The Guidelines for Research Involving Recombinant or Synthetic Nucleic Acid Molecules were established by the NIH to ensure safe, secure, and ethical work with rdna. These NIH Guidelines apply to all research at any institution that receives NIH funding. Therefore, all recombinant or synthetic nucleic acid work at the University of Chicago is subject to the NIH Guidelines, even if the lab does not have NIH funding. One of the mandates of the NIH Guidelines is that each institution has an Institutional Biosafety Committee (IBC) to oversee rdna research. 15

16 Experiments covered by the NIH Guidelines (Section III): This section describes six categories of experiments involving recombinant or synthetic nucleic acid. These six categories are presented in descending order in terms of the degree of oversight required. 16

17 Experiments that fall into these categories require approval before commencement of work. III-A: The deliberate transfer of a drug resistance trait to microorganisms that are not known to acquire the trait naturally, if such acquisition could compromise the use of the drug to control disease agents in humans, veterinary medicine, or agriculture. Example: Rickettsial infections are treated in the clinic with tetracycline antibiotics. A tetracycline resistance gene cannot be cloned into Rickettsia species without first having approval from the IBC, RAC, and NIH Director. III-B: Experiments involving the cloning of toxin molecules with LD 50 of less than 100 nanograms per kilogram body weight. Example: The LD 50 for botulinum toxin is 1.2 ng/kg. Cloning and expression of the genes that encodes this toxin requires first obtaining approval from the IBC and NIH-OBA. 17

18 Experiments that fall into these categories require approval before commencement of work. III-C: Experiments involving the deliberate transfer of recombinant or synthetic nucleic acid molecules, or DNA or RNA derived from recombinant or synthetic nucleic acid molecules into one or more human research participants. Human gene transfer is the deliberate transfer into human research participants of either: 1.Recombinant nucleic acid molecules, or DNA or RNA derived from synthetic nucleic acid molecules, or 2.Synthetic nucleic acid molecules, or DNA or RNA derived from synthetic nucleic acid molecules, that meet any one of the following criteria: A. Contain more than 100 nucleotides; or B. Possess biological properties that enable integration into the genome; or C. Have the potential to replicate in a cell; or D. Can be translated or transcribed. Example: Direct administration of rdna to humans via gene gun or administration of microorganisms harboring rdna to humans would require IBC, IRB, and OBA approval prior to the start of the experiment. III-D: -Experiments using RG2, RG3, RG4, or restricted agents as host-vector systems. -Experiments in which DNA from RG2, RG3, RG4, or restricted agents is cloned into nonpathogenic prokaryotic or lower eukaryotic host-vector systems. -Experiments involving the use of infectious DNA or RNA viruses or defective DNA or RNA viruses in the presence of a helper function in tissue culture (e.g., lentivirus, adenovirus). -Experiments involving whole animals in which the animal s genome has been altered by stable introduction of rdna, or DNA derived there from, into the germ-line (transgenic animals) and experiments involving viable rdna-modified microorganisms tested on whole animals. This excludes transgenic rodents managed at BSL-1. -Experiments to genetically engineer plants by rdna methods, to use such plants for other experimental purposes, to propagate such plants, or to use plants together with microorganisms or insects containing rdna. -Experiments involving more than 10 liters of culture. 18

19 -Experiments with influenza virus generated by recombinant or synthetic methods. 18

20 Experiments that fall into category III-E require IBC notice simultaneous with initiation of work. III-E: -Experiments involving the formation of rdna molecules containing no more than 2/3 of the genome of any eukaryotic virus. -Experiments involving the rdna-modified whole plants, and/or experiments involving rdna-modified organisms associated with whole plants, except those that fall under III-A, III-B, III-D, III-F. -Experiments involving the generation of rodents in which the animal s genome has been altered by stable introduction of rdna, or DNA derived therefrom, into the germ-line (transgenic rodents) requiring BSL-1 containment. III-F: Experiments Exempt from NIH Guidelines -Those involving synthetic nucleic acids that (1) can neither replicate nor generate nucleic acids that can replicate in any living cell, (2) are not designed to integrate into DNA, and (3) do not produce a toxin that is lethal for vertebrates at an LD50 of less than 100 nanograms per kilogram body weight. -Those that are not in organisms, cells, or viruses, and that have not been modified or manipulated to render them capable of penetrating cellular membranes. -Experiments that consist solely of the exact recombinant or synthetic nucleic acid sequence from a single source that exists contemporaneously in nature. -Those that consist entirely of DNA segments from a single nonchromosomal or viral DNA source, though one or more of the segments may be a synthetic equivalent. -Those that consist entirely of DNA from a prokaryotic host when propagated only in that host. -Those that consist entirely of DNA from an eukaryotic host when propagated only in that host (or a closely related strain of the same species). -Consist entirely of DNA segments from different species that exchange DNA by known physiological processes. -Those that do not present a significant risk to health or the environment, as determined by the NIH Director, with advice of the RAC. 19

21 III-F Experiments that are exempt from the NIH guidelines are NOT exempt from oversight by the UC IBC if they involve rdna or RG2 or higher organisms. For information specific to The University of Chicago, please visit the UC IBC website at 20

22 If you are working with these toxins, you need to submit an IBC protocol (regardless of whether you are using rdna or infectious agents). More information on IBC-regulated toxins can be found at 21

23 If you are working with these toxins, you need to submit an IBC protocol (regardless of whether you are using rdna or infectious agents). More information on IBC-regulated toxins can be found at 22

24 The complete text of BMBL can be found online at 23

25 In general, the greatest risks for laboratory personnel at BSL 2 include accidental percutaneous or mucous membrane exposure or ingestion of infectious materials. However, a risk assessment is always required to identify hazards specific to the organism, facility, and procedures involved. 24

26 Washing your hands is the best way to remove biohazardous contamination from your hands and prevent further spread. Hand sanitizing solutions/gels/foams do NOT replace hand washing as a means of decontamination. Hand sanitizer usually relies on ethanol as a germicide and is ineffective against non enveloped viruses, such as adenovirus, and sporeforming bacteria. Hand washing with soap and water also provides mechanical removal of microorganisms, which is equally as important as the soap used. 25

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29 Safe handling of sharps: Needles must not be bent, sheared, broken, recapped, removed from disposable syringes, or otherwise manipulated by hand before disposal. Used disposable needles and syringes must be carefully placed in conveniently located puncture resistant containers used for sharps disposal. Non disposable sharps must be placed in a hard walled container for transport to a processing area for decontamination, preferably by autoclaving. Broken glassware must not be handled directly. Instead, it must be removed using a brush and dustpan, tongs, forceps or other mechanical means. Plastic ware should be substituted for glassware whenever possible. 28

30 Why use a BSC if my bug is not transmitted via aerosol route? Answer: Working in a BSC provides other advantages in addition to containment of aerosols. Utilization of a BSC confines the work space where biohazards are manipulated, reducing their accidental spread beyond the BSC. This confined space can often be easier to decontaminate than large open benches. 29

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33 Decontamination: The proper way to decontaminate your work surface and potentially infectious material will depend on the microorganism that you work with. The information regarding the proper means of decontamination for your work will be listed in the Agent Profile Form of your lab s IBC Protocol. Ask your PI or contact the IBC office to obtain a copy of the IBC protocols that describe your work with biohazards. If you re going to use EtOH for decontamination, 70% EtOH is better than 100%. For more information about choosing the correct decontamination method, please refer to the University of Chicago Biosafety Manual at chicago biosafety manual or contact the Office of Biological Safety. 32

34 For more information regarding removal of potentially infectious waste from your lab, please visit 33

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36 A primary barrier is the first line of defense between a biohazard and the worker. A BSC is considered a primary barrier even when a biohazard is contained within a tube because once the tube is opened, the BSC becomes the first line of defense. BSCs are designed to provide personnel, environmental, and product protection when appropriate practices and procedures are followed. 35

37 Lab Coats: Lab coats should be provided by your supervisor and should be laundered routinely. Lab coats are never to be worn outside of the lab or taken home for any reason. Laundry facilities are available to you on campus. Contact your PI or department administrator for information regarding how to have your lab coat laundered. Never launder your lab coat at home. 36

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