Abstract
XBP-1 is a CREB/ATF family transcription factor highly expressed in hepatocellular carcinomas. Here we report that XBP-1 is essential for liver growth. Mice lacking XBP-1 displayed hypoplastic fetal livers, whose reduced hematopoiesis resulted in death from anemia. Nevertheless, XBP-1-deficient hematopoietic progenitors had no cell-autonomous defect in differentiation. Rather, hepatocyte development itself was severely impaired by two measures: diminished growth rate and prominent apoptosis. Specific target genes of XBP-1 in the liver were identified as αFP, which may be a regulator of hepatocyte growth, and three acute phase protein family members. Therefore, XBP-1 is a transcription factor essential for hepatocyte growth.
Authors
12
- Andreas M. Reimold (first)
- Amit Etkin (additional)
- Isabelle Clauss (additional)
- Andrew Perkins (additional)
- Daniel S. Friend (additional)
- John Zhang (additional)
- Heidi F. Horton (additional)
- Andrew Scott (additional)
- Stuart H. Orkin (additional)
- Michael C. Byrne (additional)
- Michael J. Grusby (additional)
- Laurie H. Glimcher (additional)
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Dates
Type | When |
---|---|
Created | 3 years, 9 months ago (Nov. 14, 2021, 10:27 p.m.) |
Deposited | 3 years, 9 months ago (Nov. 14, 2021, 10:28 p.m.) |
Indexed | 3 days, 19 hours ago (Aug. 26, 2025, 2:38 a.m.) |
Issued | 25 years, 7 months ago (Jan. 15, 2000) |
Published | 25 years, 7 months ago (Jan. 15, 2000) |
Published Online | 25 years, 7 months ago (Jan. 15, 2000) |
Published Print | 25 years, 7 months ago (Jan. 15, 2000) |
@article{Reimold_2000, title={An essential role in liver development for transcription factor XBP-1}, volume={14}, ISSN={1549-5477}, url={http://dx.doi.org/10.1101/gad.14.2.152}, DOI={10.1101/gad.14.2.152}, number={2}, journal={Genes & Development}, publisher={Cold Spring Harbor Laboratory}, author={Reimold, Andreas M. and Etkin, Amit and Clauss, Isabelle and Perkins, Andrew and Friend, Daniel S. and Zhang, John and Horton, Heidi F. and Scott, Andrew and Orkin, Stuart H. and Byrne, Michael C. and Grusby, Michael J. and Glimcher, Laurie H.}, year={2000}, month=jan, pages={152–157} }