Transgenic Core

Director: Arlene Sharpe

Core Summary:

Transgenic Core Facility provides services for generating transgenic and knockout mice. Established in 1992, the BWH Core Facility has been providing gene targeting and microinjection services using state-of-the-art facilities and equipment.

Personnel/Contact Information:

Director: Arlene Sharpe, M.D, Ph.D.
Phone: (617) 432-6569
Fax: (617) 432-6570

Other Staff:

Transgenic Specialist: Lina Du, M.D.
Phone: (617) 432-6227

ES Cell Culture Technician: Xiaomeng Tang
Phone: (617) 432-6182

ES Cell Culture Technician: Matthew Finn
Phone: (617) 432-6576


Major Equipment:

The Core Facility has all of the equipment necessary for generation of transgenic mice including a Nikon Diaphot microscope equipped with Nomarski Optics and Narishige micromanipulators for microinjections, Nikon surgical microscopes for egg isolation ad transfer, a sutter needle puller and a de Fonbrune microforge.

  • Microinjection of DNA constructs (including BACs) into pronuclei for generating transgenic mice (FVB or C57 BL/6 strain background)
  • Microinjection of embryonic stem (ES) cells into blastocysts for generating knockout mice
  • ES cell transfection for generating ES cell clones with the targeted combination event
  • Lentiviral transgenics
  • Microinjection of IPS
FY14 User Fees (effective 02/19/2014):

Internal Users
External Users
Non-Partners AMC & Non-Profit
For-Profit & Industry
Lentiviral Injection
DNA (FVB) Pronuclear Injection
DNA (C57) Pronuclear Injection
DNA Injection & Microdissection
Additional DNA Injection
BAC Injection
ES Cell Injection (129)
ES Cell Injection (B6)
Tail Biopsy
Electroporation (129) ES
Electroporation (B6) ES
ES Expansion
ES Cell Prep for Injection
Balb C
CRISPR Injection
Sperm Cryopreservation
Embryo Cryopreservation
Thawing and Implantation of Embryos
Fresh Sperm IVF
Frozen Sperm IVF
Exportation Fee
Animal Per Diem

Getting Started:

Our ES facility will generate targeted ES cell lines with KO constructs provided by investigators. Upon receipt of the constructs and application form, electroporation will be scheduled. The Core Director, Dr. Arlene Sharpe will prioritize the service requests according to the difficulty of the project and work load.

  1. Transfection of your linearized DNA construct into ES cells, J1 (129/SV) and Bruce 4 (C57 BL/6J).
  2. After electroporation and selection, clones will be picked, cultured in multi-well plates and replicated. The clones will be frozen to be used to expand positive clones.
  3. The investigator will be notified and given DNA isolated from from each clone suitable for screening.
  4. Since storage of frozen cells in multi-well dishes is not optimal, it is strongly suggested that researcher return the screening results to the core within 4 months of receipt of the DNA samples.
  5. After screening the clones, up to six ES positive clones will be expanded and frozen down.
  6. After expansion, the investigator will then receive DNA from each clone for reconfirmation of targeted recombination. After reconfirmation, the best growing clones will then be scheduled for injection into blastocysts.  Chimeric mice will be given to the investigator.

Please complete the appropriate application forms below for your service request:

Application for Injection of DNA into Pronuclei

Injection of Embryonic Stem Cells into Blastocysts

In vitro Gene Targeting Application

Preparation of DNA construct for microinjection

Departmental Web Link:

To access antibody request form, please click on link below:





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