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Cited by 286

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Autoimmune disease in mice due to integration of an endogenous retrovirus in an apoptosis gene.

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Wu, J, Zhou, T, He, J, Mountz, J D·1993·The Journal of experimental medicine

Abstract

The MRL-lpr/lpr mouse strain is a model of systemic autoimmune disease. In this model, intrinsic defects of intrathymic T cell development include defective deletion of self-reactive T cells and expression of endogenous retroviruses. Defective deletion of self-reactive T cells in the thymus has been proposed to be due to germline mutation in the Fas apoptosis gene. Using different fragments of a Fas cDNA probe, we determined that the lpr/lpr mutation is a 5.3-kb insertion of DNA within the second intron of the Fas gene. cDNA corresponding to this region was then derived from thymic RNA from MRL-lpr/lpr and MRL- +/+ mice using the polymerase chain reaction. All thymic RNA samples from MRL-lpr/lpr mice yielded a unique product that was 168 bp larger than that of MRL- +/+ mice. Complete sequence analysis indicated that this inserted sequence had 98% homology with a sequence from the 3' long terminal repeat of the early transposon (ETn). RNA analysis indicated higher expression of ETn RNA in the thymus of MRL-lpr/lpr than MRL- +/+ mice. The interdependence of ETn expression and abnormal Fas expression was then analyzed in a CD2-Fas transgenic mouse model in which a full-length murine Fas cDNA under the regulation of the CD2 promoter and enhancer was used to correct defective Fas expression in T cells of MRL-lpr/lpr mice. In these mice, reduced thymic ETn expression was observed, confirming that high ETn expression is related to abnormal Fas expression. These results establish a link between endogenous retrovirus expression, abnormal Fas expression, and autoimmune disease.

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Metadata

Authors
Wu, J., Zhou, T., He, J., & Mountz, J. D.
Venue
The Journal of experimental medicine
Published
1993-08-01
Volume
178
Issue
2
Pages
461-468
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2152508168
Cited by
286
References
17
FWCI
14.86
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Autoimmune disease in mice due to integration of an endogenous retrovirus in an apoptosis gene. https://app.cochat.ai/papers/10.1084/jem.178.2.461
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Wu, J., Zhou, T., He, J., & Mountz, J. D. (1993). Autoimmune disease in mice due to integration of an endogenous retrovirus in an apoptosis gene. The Journal of experimental medicine. https://doi.org/10.1084/jem.178.2.461

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.