Generation of novel Id2 and E2-2, E2A and HEB antibodies reveals novel Id2 binding partners and species-specific expression of E-proteins in NK cells
- Author(s)
- Rautela, J; Dagley, LF; Kratina, T; Anthony, A; Goh, W; Surgenor, E; Delconte, RB; Webb, AI; ELWOOD, N; Groom, JR; Souza-Fonseca-Guimaraes, F; Corcoran, L; Huntington, ND;
- Journal Title
- Molecular Immunology
- Publication Type
- Journal Article
- Abstract
- NK cells are cytotoxic lymphocytes with a key role in limiting tumour metastases. In mice, the NK cell lineage continually expresses high levels of the Inhibitor of DNA-binding 2 (Id2) protein and loss of Id2 is incongruous with their survival due to aberrant E-protein target gene activity. Using novel Id2 and E-protein antibodies that detect both mouse and human proteins, we have extensively characterised Id2 and E-protein expression in murine and human NK cells. We detected clear expression of E2 A and HEB, and to a lesser extent E2-2 in murine NK cells. In contrast HEB appears to be the major E-protein expressed in human NK cells, with minor E2-2 expression and surprisingly, no E2 A detected in primary NK cells nor human NK cell lines. These novel antibodies are also functional in immunofluorescence and immunoprecipitation. Mass spectrometry analysis of Id2 immuno-precipitated from murine NK cells revealed a number of novel associated proteins including several members of the SWI/SNF-related matrix-associated actin-dependent regulator chromatin (SMARC) and Mediator complex (MED) families. Taken together, these data highlight the utility of novel Id2 and E-protein antibodies and caution against mouse models for understanding Id2/E-protein biology in NK cells given their clearly disparate expression patternbetween species.
- Publisher
- Elsevier
- Research Division(s)
- Molecular Immunology; Systems Biology And Personalised Medicine
- PubMed ID
- 30144957
- Publisher's Version
- https://doi.org/10.1016/j.molimm.2018.08.017
- NHMRC Grants
- NHMRC/1124907, NHMRC/1124784, NHMRC/1049407, NHMRC/1066770, NHMRC/1057852, NHMRC/1027472, NHMRC/1124788,
- Terms of Use/Rights Notice
- Refer to copyright notice on published article.
Creation Date: 2018-09-06 03:42:38
Last Modified: 2020-11-03 11:49:36