Cited by 58Hematopoietic Stem Cell TransplantationMesenchymal stem cell researchBlood disorders and treatments

Thioredoxin-interacting protein regulates hematopoietic stem cell quiescence and mobilization under stress conditions

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Jeong, Mira, Piao, Zheng-Hao, Kim, Mi Sun, Lee, Suk Hyung, Yun, Sohyun, Sun, Hu-nan, Yoon, Suk Ran, Chung, Jin Woong +6 more·2009·The Journal of Immunology

Abstract

Hematopoietic stem cells (HSCs) are maintained in a quiescent state in bone marrow (BM) niches by intrinsic and extrinsic signals. The mechanisms regulating the quiescence and mobilization of HSCs, however, remain unclear. In this study, we report that the expression of thioredoxin-interacting protein (TXNIP) is decreased during HSC activation. In Txnip−/− mice, the long-term reconstituting HSC population is decreased and exhausted, and its capacity to repopulate is rapidly lost. These effects are associated with hyperactive Wnt signaling, an active cell cycle, and reduced p21 expression under conditions of stress. TXNIP deficiency reduced the CXCL12- and osteopontin-mediated interaction between HSCs and the bone marrow, and impaired homing and retention in the osteoblastic niche, resulting in mobilized HSCs. Therefore, we propose that TXNIP is essential for maintaining HSC quiescence and the interaction between HSCs and the BM niche.

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Crossref · 10.4049/jimmunol.0804221

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  • Txnip is a thiol-oxidoreductase that controls cellular redox signaling to protect cells from oxidative stress, and regulates hematopoietic stem cell quiescence under stress conditions by stabilizing p53 protein via direct interaction.

    “Txnip is a thiol-oxidoreductase that controls cellular redox signaling to protect cells from oxidative stress, and regulates HSC quiescence under stress conditions (34) by stabilizing p53 protein via direct interaction (38).”
  • Txnip has a described role in hematopoietic stem cell function, cell-cycle regulation, and stress response.

    “This gene was of interest due to its described role in HSC function (34), cell-cycle regulation (35), and stress response (36).”

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Authors
Jeong, M., Piao, Z.-H., Kim, M. S., Lee, S. H., Yun, S., Sun, H.-N., Yoon, S. R., Chung, J. W., Kim, T.-D., Jeon, J. H., Lee, J., Kim, H.-N., Choi, J.-Y., & Choi, I.
Affiliations
  • Korea Research Institute of Bioscience and Biotechnology (KR)
  • Dong-A University (KR)
  • Kyungpook National University (KR)
Corresponding author
  • Jeong, Mira
  • Yun, Sohyun
  • Lee, Jiwon
  • Choi, Inpyo
Venue
The Journal of Immunology
Published
2009-08
Volume
183
Issue
4
Pages
2495-2505
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W2122533032
Cited by
58
References
44
Citations by year
2024: 4 · 2023: 1 · 2022: 3 · 2021: 5 · 2020: 6 · 2019: 2 · 2018: 1 · 2017: 3 · 2016: 1 · 2015: 4 · 2014: 3 · 2013: 7 · 2012: 7
FWCI
3.94
Type
journal article
Language
en
Open access
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • KRIBB Repository (submittedVersion)
Funders
Korea Research Institute of Bioscience and Biotechnology
Topics
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Blood disorders and treatments
Keywords
TXNIP, hematopoietic stem cells, stem cell quiescence, hematopoietic stem cell mobilization, bone marrow microenvironment, Wnt signaling, p21, CXCL12, osteopontin, HSC homing, HSC exhaustion, stress conditions, osteoblastic niche
MeSH terms
Animals, Bone Marrow Cells, Carrier Proteins, Cell Movement, Cells, Cultured, Hematopoietic Stem Cells, Mice, Inbred C57BL, Stress, Physiological, Thioredoxins, Time Factors, Signal Transduction, Resting Phase, Cell Cycle, Mice, Knockout, Wnt1 Protein, Mice

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