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Transgenic Core

Core Summary:

The Beth Israel Deaconess Transgenic Core Facility opened in October of 1991.The Transgenic Core is a state-of-art facility that produces genetically altered animals.

New Services (updated: 1/25/2016)

FVB/N or C57BL/6 CRISPR injections 

Service:  Pronuclear stage zygotes are injected with CRISPR reagents for the purpose of creating knockouts or knockins.  We have observed increased efficiency when investigators have purchased all their reagents (Cas9 enzyme, nickase, sgRNA and DNA).  In 3 recent (October ’15) knockin projects, utilizing Cas9 nickase and two sgRNA9(s) there were 5/65, 9/73 and 6/59 (founders/pups screened).  The source of reagents were:

  1. Recombinant Cas9 nickase: PNA bio Inc (; catalog number CN01; 50ug/vial.  The company also provides Cas9 enzyme (see website for cat #).
  2. sgRNA(s): PNA Bio Inc (;  (sgRNA synthesis service; 50ug lyophilized).  No catalog number.
  3. Oligo DNA (knockins):  IDT ( as a 4 nmole Ultramer DNA oligo.
  4. For large-fragment knockins, such as ires-cre or GFP fluorescent proteins, a DNA vector containing homologous fragments needs to be constructed and provided by investigators. 

The reagents are injected in the following concentrations (manufacturer recommendation):  Cas 9 (200ng/ul), sgRNA(s) (100ng/ul), DNA (20-60ng/ul).  A mix of the reagents totaling 50ul is made and is used for one week.  Reagents may be presented to the Core in a lyophilized form or reconstituted in culture grade water with enough aliquots of the Cas 9 and sgRNA to allow the lab to make at least 3 mixes. 

Guarantee: 1 founder 

Fees:   FVB injections:           BIDMC investigator = $3,500
                                              Non-BIDMC investigator = $5,250


           C57Bl/6 injections:     BIDMC investigator = $5,000
                                              Non-BIDMC investigator = $7,500


The Basic Services of the Beth Israel Deaconess Transgenic Facility are:

  • DNA Injections
  • Embryonic Stem Cell Injections
  • Embryo Freezing
  • Line Rescue

In addition to the services the Transgenic Facility provides, the following techniques are available to the BIDMC/HMS research community:

  • Embryo Culture
  • Embryo Transfer
  • Embryo Micromanipulation
  • Mouse In Vitro Fertilization
  • Mouse Artificial Insemination
  • Mouse Vasectomies
  • Microtool Development and Preparation


The first transgenic animal created in the facility was born in January of 1992. During that first year, ('91-'92) 15 constructs were injected. Other significant dates include:

  • 1992- Transgenic Facility becomes core for BONRC (Boston Obesity Nutrition and Research Center) .
  • 1994- Transgenic Facility becomes the Cohen-Solomon transgenic laboratory.

Contact Information

Joel Lawitts, PhD, Director
Beth Israel Deaconess Transgenic Core
Instructor, Department of Pathology
Harvard Medical School
Phone: 617-667-0391


Contact Information

Transgenic Facility Core
Beth Israel Deaconess Medical Center
RN 194
99 Brookline Ave
Boston, MA 02215-5491