Differential Antigen Processing by Dendritic Cell Subsets in Vivo

Author:

Dudziak Diana1234,Kamphorst Alice O.1234,Heidkamp Gordon F.1234,Buchholz Veit R.1234,Trumpfheller Christine1234,Yamazaki Sayuri1234,Cheong Cheolho1234,Liu Kang1234,Lee Han-Woong1234,Park Chae Gyu1234,Steinman Ralph M.1234,Nussenzweig Michel C.1234

Affiliation:

1. Laboratory of Molecular Immunology, The Rockefeller University, New York, NY 10021, USA.

2. Laboratory of Cellular Immunology and Physiology, The Rockefeller University, New York, NY 10021, USA.

3. Department of Biochemistry, College of Sciences, Yonsei University, Seoul 120-749, Korea.

4. Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10021 USA.

Abstract

Dendritic cells (DCs) process and present self and foreign antigens to induce tolerance or immunity. In vitro models suggest that induction of immunity is controlled by regulating the presentation of antigen, but little is known about how DCs control antigen presentation in vivo. To examine antigen processing and presentation in vivo, we specifically targeted antigens to two major subsets of DCs by using chimeric monoclonal antibodies. Unlike CD8 + DCs that express the cell surface protein CD205, CD8 DCs, which are positive for the 33D1 antigen, are specialized for presentation on major histocompatibility complex (MHC) class II. This difference in antigen processing is intrinsic to the DC subsets and is associated with increased expression of proteins involved in MHC processing.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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