Stanford School of Medicine

Key Documents

Mark M. Davis

Contact Information

  • Clinical Offices
  • Academic Offices
    Personal Information
    Administrative Contact
    Barbara Whyte Administrative Assistant Tel Work 650-725-4755

Administrative Appointments

  • The Burt and Marion Avery Family Professor of Immunology, Stanford University School of Medicine , (2007– present )
  • Director, Stanford Institute for Immunity, Transplantation and Infection, Stanford University School of Medicine , (2004– present )
  • Chair, Stanford University School of Medicine - Microbiology & Immunology , (2002– 2004 )

Honors and Awards

  • Milton and Francis Clauser Doctoral Prize, Caltech (1981)
  • Passano Young Scientist Award, Passano Foundation (1985)
  • Eli Lilly Award in Microbiology and Immunology, American Society of Microbiology (1986)
  • Howard Taylor Ricketts Award, University of Chicago (1988)
  • Gairdner Prize, Gairdner Foundation (1989)
  • Member, National Academy of Sciences (1993)
  • King Faisal Prize, King Faisal Foundation (1995)
  • General Motors Cancer Prize:Sloan Award, General Motors Cancer Fdn. (1996)
  • Novartis Prize for Basic Immunology, International Union of Immunology Societies (1998)
  • William B. Coley Award, Cancer Research Institute (2000)
  • Pius XI Award, Pontifical Academy of Sciences (2000)
  • Newton-Abraham Visiting Professor, University of Oxford (2000-2001)
  • The Burt and Marion Avery Professorship, Stanford University (2001-2006)
  • The Rose Payne Award, American Society for Histoocommpatibility and Immunogenetics (2002)
  • Ernst W. Bertner Award, M.D.Anderson Cancer Center/Univ. Texas (2003)
  • Member, National Institute of Medicine (2004)
  • Paul Ehrlich Prize, Paul Ehrlich Foundation (2004)
  • Distinguished Alumni Award, Caltech (2005)

Professional Education

  • Ph. D., Caltech Molecular Biology (1981)
  • B.A., The Johns Hopkins University Molecular Biology (1974)

Graduate & Fellowship Program Affiliations

Industry Relationships

Stanford is committed to ethical and transparent interactions with our industry partners. It is our policy to disclose payments of $5,000 or more, equity valued at $5,000 or more in a publicly traded company, or any equity in a privately held company, to physicians and scientists employed by Stanford University from companies or other commercial entities with which they interact as part of their professional activities. 

  • Consulting: Affymetrix, La Jolla Institute for Allergy and Immunology, Novartis

Research Interests

We are interested in the molecular basis of T and B lymphocyte recognition, as well as the control of differentiation and functional responses in these cells. In particular, we have studied the biochemical basis of T cell receptor binding to antigen/MHC complexes and find that the strength of the interactions is a very good predictor of what the resulting T cell response will be. We also find that T cell receptor-peptide/ MHC complexes have an inherent ability to form oligomers and that this could be part of the ‘trigger’ for T cell activation. One spin-off of these biochemical studies has been the development of tetrameric peptide/MHC reagents which have proven to be generally useful for staining and characterizing antigen-specific T cells in complex mixtures of lymphocytes (i.e. McMichael and Callaghan, J. Exp. Med., 187:1367-1371, 1998). Among other things, we have used these tetramers to follow tumor specific T cells in patients with Melanoma and other cancers. In one patient where we see a substantial number of CD8+ T cells specific for a tumor antigen, the cells have no cytolytic activity and thus seem to have been ‘anergized’ by the tumor. We are now working with a number of groups that have developed different vaccination strategies to determine which strategies are best able to produce a useful response.

Another important aspect of T cell recognition that is something of a ‘black box’ is the mystery of what actually happens on the surface of T cell while it is surveying an antigen presenting cell. To investigate this we have made a large series of green fluorescent protein tagged cell surface molecules, expressed them in B or T lymphocytes and followed their movements using multi-color video microscopy. Thus far we find that many key molecules (ICAM-1, CD48, class II, MHC) on the B cell cluster to the interface with a T cell within seconds after the first rise in internal calcium (in the T cell) and the corresponding movement of complimentary membrane molecules on the T cell may be a key factor in the phenomenon of co-stimulation. That is, the augmentation of T cell responses that is characteristic of responses triggered in T cells when B cells, dendritic cells, or macrophages are the antigen presenting cells. Some of these videos can be seen at http://cmgm.stanford.edu/hhmi/mdavis.

Another area of interest is the structural basis of T cell receptor or antibody binding to their respective antigen/MHC or antigenic ligands. For some years we have noted the extreme sequence diversity in the V(D)-J regions of T cell receptors (the CDR3 loops) and proposed that these sequences are primarily responsible for peptide recognition. Recent X-ray structural analysis and other studies support this contention and suggest that the equivalent diverse CDR3 loops in immunoglobulins also play a key role in specificity determination.

Publications