Selected Research and Reviews

Transcriptional control of central T cell tolerance by NR4A family nuclear receptors

Hailyn V. Nielsen, James L. Mueller, Ryosuke Hiwa, Letitia Yang, Irina Proekt, Elze Rackaityte, Dominik Aylard, Christopher D. Scharer, Mark AndersonByron Au-Yeung, Julie Zikherman. Biorxiv preprint.

summary: We show that the nuclear receptors Nr4a1 and Nr4a3 are essential to upregulate BIM and for thymic negative selection by tissue-restricted model self-antigen (TRA). Moreover, we reveal that the Nr4a family is absolutely required for full induction of a broad transcriptional program triggered in self-reactive thymocytes by TRA recognition, and conserved across model systems and the natural repertoire.


Molecular basis for potent B cell responses to antigen displayed on particles of viral size

Jeremy F. Brooks, Julianne Riggs, James L. Mueller, Raisa Mathenge, Wei-Yun Wholey, Sekou-Tidiane Yoda, Vivasvan Vykunta, Wei Cheng, Julie Zikherman. Nature Immunology. 2023 Oct;24(10):1762-1777. PMID: 37653247

summary: We show that multivalent epitope display on the surface of viral-sized particles functions as a ‘stand-alone’ danger signal by evading inhibitory pathways to trigger a unique mode of B cell receptor signaling. The activation, survival and proliferation of B cells stimulated with particulate antigen is highly enhanced compared with those stimulated with soluble antigen, and does not require co-stimulation from T cells.