NDLI: Control of hematopoietic stem cell quiescence by the E3 ubiquitin ligase Fbw7

Please wait, while we are loading the content...

Control of hematopoietic stem cell quiescence by the E3 ubiquitin ligase Fbw7

Content Provider	Scilit
Author	Thompson, Benjamin J. Jankovic, Vladimir Gao, Jie Buonamici, Silvia Vest, Alan Lee, Jennifer May Zavadil, Jiri Nimer, Stephen D. Aifantis, Iannis
Copyright Year	2008
Description	Journal: The Journal of experimental medicine Ubiquitination is a posttranslational mechanism that controls diverse cellular processes. We focus here on the ubiquitin ligase Fbw7, a recently identified hematopoietic tumor suppressor that can target for degradation several important oncogenes, including Notch1, c-Myc, and cyclin E. We have generated conditional Fbw7 knockout animals and inactivated the gene in hematopoietic stem cells (HSCs), progenitors, and their differentiated progeny. Deletion of Fbw7 specifically and rapidly affects hematopoiesis in a cell-autonomous manner. Fbw7−/− HSCs show defective maintenance of quiescence, leading to impaired self-renewal and a severe loss of competitive repopulating capacity. Furthermore, Fbw7−/− progenitors are unable to colonize the thymus, leading to a profound depletion of T cell progenitors. Deletion of Fbw7 in bone marrow (BM) stem cells and progenitors leads to the stabilization of c-Myc, a transcription factor previously implicated in HSC self-renewal. On the other hand, neither Notch1 nor cyclin E is visibly stabilized in the BM of Fbw7-deficient mice. Gene expression studies of Fbw7−/− HSCs and hematopoietic progenitors indicate that Fbw7 regulates, through the regulation of HSC cycle entry, the transcriptional “signature” that is associated with the quiescent, self-renewing HSC phenotype.
Related Links	http://jem.rupress.org/content/jem/205/6/1395.full.pdf https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2413036/pdf http://jem.rupress.org/content/205/6/1395.full.pdf
ISSN	00221295
DOI	10.1084/jem.20080277
Journal	The Journal of experimental medicine
Issue Number	6
Volume Number	205
Language	English
Publisher	Rockefeller University Press
Publisher Date	2008-05-12
Access Restriction	Open
Subject Keyword	Journal: The Journal of experimental medicine Research and Experimental Medicine Ubiquitin Ligase
Content Type	Text
Resource Type	Article
Subject	Physiology

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in