Category: Uncategorized

Mouse Biology Program is in the process of an across the board rate review, affecting MBP, MMRRC at UC Davis, MMPC at UC Davis, GMRC, and MBSR. Our rates will be updated as early as October 1, 2023. Orders submitted prior to that date will not be affected, however fees quoted but no order request submitted will be subject to the new rates. Our per diem rates for all MBP housed and managed colonies will be billed the new rates starting October 23^rd. We will release a copy of the new rates as soon as they are approved. 

We are actively monitoring the situation with COVID-19. In accordance with state, local, and university guidelines, the MMRRC at UC Davis and the UC Davis Mouse Biology Program are currently in Phase 3 of recovery. We have been given campus authorization to resume services, including beginning new projects, though with continued staffing restrictions, thus limiting our scheduling capacity; we will work closely with institutions and couriers, as there are still flight concerns, to ensure the safety and health of personnel, live animals, and research materials. We appreciate your understanding of delays experienced during this time.

Customer service will continue to primarily operate remotely. If you need to contact us, we are available via email (mmrrc@ucdavis.edu) or we can schedule a Zoom teleconference (we have limited access to our office phones).

We are actively monitoring the situation with COVID-19. In accordance with state, local, and university guidelines, the MMRRC at UC Davis and the UC Davis Mouse Biology Program continue to operate with limited on-site staff; we are currently in Phase 2 of recovery. Customer service will continue to operate remotely, and will work closely with customers to ensure the safety and health of personnel, live animals, and research materials. We have been given campus authorization to resume some services, specifically those scheduled prior to the shutdown that were halted. We have also been given campus authorization to resume some shipping and receiving for projects that were in process prior to the shelter in place; we will work closely with institutions and couriers, as there are still flight concerns, to ensure the safety and health of personnel and live animals. We are not yet processing new orders or projects, with the exception of approved UCD research projects, but can prepare necessary documentation in anticipation of Phase 3. We appreciate your understanding of delays experienced during this time.

If you need to contact us, we are available via email (mmrrc@ucdavis.edu) or we can schedule a Zoom teleconference (we do not have access to our office phones).

The MMRRC is pleased to welcome its newest collection of cell lines to the repository. The UC Davis/NIH NeuroMab Facility has deposited 473 Hybridoma Cell Lines into the MMRRC at UC Davis.

Hybridoma cell lines are immortal monoclonal antibody producing cells that can be grown in tissue culture at any scale to produce monoclonal antibodies. Each of the 473 cell lines in the MMRRC produced monoclonal antibodies validated for the specificity and efficacy in brain research applications at UC Davis/NIH NeuroMab Facility.

This new collection will empower researchers with the ability to produce large quantities of specific and highly validated monoclonal antibodies at low cost. One of the other benefits of having this collection in the MMRRC is that scientists also have access to knockout mouse lines for genes that encode protein targets of the NeuroMAb monoclonal antibodies. Accessibility of these cell lines will allow investigators to explore the dynamic organization of specific cell antibodies critical to understanding and improving health and disease.

Check out the new collection here.

The MMRRC at UC Davis is now maintaining two exciting new lines with broad applicability and interest to scientists working in many different areas. These mouse lines are called “Mouse for Actively Recording Cells 1” or MARC1.  Donated by Dr. George M. Church, Ph.D., and Dr. Reza Kalhor, Ph.D., of Harvard Medical School, they are used for barcoding and lineage tracing applications in the mouse (PMID:30093604). Although these lines do not express any disease-related phenotypes, when a MARC1 mouse is crossed to mice expressing cas9 (universally or in a lineage-specific manner), combinatorial and cumulative barcoding starts in the progeny during their development, leading to developmentally barcoded animals that can be used for a multitude of applications, including lineage tracing.

The UC Davis MMRRC currently has two MARC1 lines available:

• STOCK MARC1-PB7/Mmucd, RRID: MMRRC_065424-UCD, was founded by a chimeric male mouse that carried 60 homing guide RNA (hgRNA) loci scattered throughout its genome in a heterozygous state. The founder (#7) was crossed to wild-type C57BL/6J and CD1 mice initially, and the donor then used random intra-strain mating for approximately 10 generations.  The genetic background of this line is deemed STOCK due to contributions from more than two inbred lines, and is a mixed background of C57BL/6J, 129S4, and CD1.
• STOCK MARC1-PB3/Mmucd, RRID: MMRRC_065812-UCD, was founded by chimera #3 that carried 50 heterozygote germline-transmissible integrations of hgRNAs, including one on chromosome X. The selected founder was crossed with CD1 females to create the F1 generation. The donor used random intra-strain mating for approximately 12 generations prior to depositing to the MMRRC. The genetic background of this line is deemed STOCK due to contributions from more than two inbred lines and is a mixed background of CD1, C57BL/6J, and 129S4.

The MARC1 live mouse colonies are now available for distribution as live mice. You can find the lines that are available by either clicking on the links above, to go directly to the strain detail page, or by visiting www.mmrrc.org, and searching the catalog for MARC1.  All orders must be placed online through the national MMRRC website.

Questions on these or other MMRRC mouse models? Please contact service@mmrrc.org, and the customer service team will be happy to assist.