FEB 05, 2014 11:00 AM PST

The Future of Mouse Embryo Transfer: Achieving the 3Rs with the NSET Device

C.E. Credits: CE
Speaker
  • Senior Research Scientist, NSET testing and development Chair, ParaTechs Corp IACUC, ParaTechs Corporation, USA
    Biography
      Dr. Barbara Stone graduated from the University of Illinois in 1988 with a BS in Microbiology. Her graduate work at the University of California Los Angeles included extensive work with a mouse model of infection of Salmonella to study virulence factors. Postdoctoral fields of study included molecular genetics of virulence factors of the infectious bacteria Neisseria and Legionella at the University of North Carolina, Chapel Hill and the University of Kentucky. She received her initial training specific to the generation of transgenic animals from the Transgenic Core Facility at the University of Kentucky in 2009. Dr. Stone has been working at ParaTechs Corp since then and has been involved with many aspects of nonsurgical embryo transfer (NSET) for rodents. She is the Senior Research Scientist for NSET testing and development at ParaTechs Corporation. In addition to performing research, she provides training and international professional development opportunities. Dr. Stone also oversees the animal care and use program at ParaTechs Corp and is the Chair of the ParaTechs IACUC.

    Abstract

    Non-surgical transfer techniques for mouse embryos and sperm provide animal welfare benefits for assisted reproduction of mice. While surgical embryo transfer (ET) is an effective method for transfer of embryos into the uterine horn of mice, surgery is expensive, time consuming, and requires technical expertise. Surgery is also a stressful procedure for the mouse, which has to be anesthetized and treated with an analgesic. We have developed a simple, brief procedure for ET using a non-surgical embryo transfer (NSET) device. Once embryos are loaded into the NSET device, the tapered NSET catheter passes through the vagina and traverses the cervix to deposit the embryos into the uterine horn of a recipient mouse. Since the NSET procedure does not require sedation, opening of the inner body cavity, or use of an analgesic, this procedure is less stressful for the mouse than surgery. In proof, our results show that when pseudopregnant mice are monitored by electrocardiography, the non-surgical procedure does not affect heart rate. The NSET procedure also has no effect on the level of the stress biomarker fecal corticosterone measured by ELISA analysis. However, surgery or anesthesia does lower heart rate and increases levels of fecal corticosterone. Additional studies show that the NSET procedure is effective for transfer of mouse embryos for the purposes of rederivation, cryorecovery, and transgenic research. Embryos can be successfully transferred with the NSET technique after cryopreservation, in vitro fertilization (IVF), or embryonic stem (ES) cell injection as an alternative to traditional surgical embryo transfer. The NSET device has also successfully transferred mouse sperm for artificial insemination. Therefore, the NSET technique is an example of a 3Rs refinement, an alternative to a surgical procedure, which will lead the way for improved assisted reproductive techniques in mice.


    Show Resources
    You May Also Like
    SEP 10, 2020 9:00 AM PDT
    C.E. CREDITS
    SEP 10, 2020 9:00 AM PDT
    Date: September 10, 2020 Time: 9:00am (PDT), 12:00pm (EDT) Osmolality testing is relevant throughout the entire bioprocessing workflow. As customers look to refine mAb and gene therapy workf...
    NOV 18, 2020 8:00 AM PST
    Add to Calendar Select one of the following: iCal Google Calendar Outlook Calendar Yahoo Calendar
    C.E. CREDITS
    NOV 18, 2020 8:00 AM PST
    Add to Calendar Select one of the following: iCal Google Calendar Outlook Calendar Yahoo Calendar
    DATE: November 18, 2020 TIME: 08:00am PDT We develop and implement technologies to solve some of the major bottlenecks in biomedical research. In particular, we establish new imaging approac...
    NOV 16, 2020 8:00 AM PST
    Add to Calendar Select one of the following: iCal Google Calendar Outlook Calendar Yahoo Calendar
    C.E. CREDITS
    NOV 16, 2020 8:00 AM PST
    Add to Calendar Select one of the following: iCal Google Calendar Outlook Calendar Yahoo Calendar
    Date: November 16, 2020 Time: 8:00am (PST), 11:00am (EST) CRISPR screening has become the prime discovery tool in modern biomedical research and drug discovery. At the same time, most screen...
    MAY 08, 2020 10:00 AM PDT
    C.E. CREDITS
    MAY 08, 2020 10:00 AM PDT
    DATE: May 8, 2020 TIME: 10:00am PT, 11:00am MT, 1:00pm ET The application of next generation sequencing to interrogate immune repertoires and methods in which these highly complex dataset...
    NOV 10, 2020 7:00 AM PST
    Add to Calendar Select one of the following: iCal Google Calendar Outlook Calendar Yahoo Calendar
    NOV 10, 2020 7:00 AM PST
    Add to Calendar Select one of the following: iCal Google Calendar Outlook Calendar Yahoo Calendar
    DATE: November 10, 2020 TIME: 7:00am PDT, 10:00am EDT Automation can provide tremendous benefits such as increased pipetting precision and accuracy, productivity, and throughput. Numerous wo...
    OCT 29, 2020 6:00 AM PDT
    C.E. CREDITS
    OCT 29, 2020 6:00 AM PDT
    Date: October 29, 2020 Time: 6:00am (PDT), 9:00am (EDT), Chronic inflammation can occur as a result of a combination of genetic predispositions and environmental factors. Epigenetic modifica...
    Loading Comments...
    Show Resources
    Attendees
    • See more