ArticleExperimental hematology2012
Transient silencing of PTEN in human CD34(+) cells enhances their proliferative potential and ability to engraft immunodeficient mice.
Article in Experimental hematology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
5 citing papers in PubMed, 13 citations in OpenAlex.
- Molecular regulation of hematopoietic stem cell quiescence.Cellular and molecular life sciences : CMLS · 2022Review
- Pharmacological inhibition of AKT activity in human CD34Experimental hematology · 2017Article
- ACE2/Ang-(1-7)/Mas axis stimulates vascular repair-relevant functions of CD34+ cells.American journal of physiology. Heart and circulatory physiology · 2015Article
- Development of gene therapy for thalassemia.Cold Spring Harbor perspectives in medicine · 2012Review
- Tag-free microfluidic separation of cells against multiple markers.Analytical chemistry · 2012Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
The ability to expand hematopoietic stem and progenitor cells (HSPCs) in vitro will enhance the success of a wide range of transplant-related therapies. PTEN (phosphatase and tensin homologue deleted on chromosome 10) has been implicated as a regulator of murine HSPC self-renewal, but little is understood about the role of PTEN in human HSPC regulation. We tested the impact of transient small interfering RNA (siRNA)-induced inhibition of PTEN expression in human CD34(+) cells on their cell cycle profile, their susceptibility to retroviral transduction, and their ability to self-renew and repopulate nonobese diabetic/severe combined immunodeficiency disease with interleukin-2 receptor γ-chain deficiency mice. Reduced PTEN messenger RNA and protein levels were confirmed in PTEN siRNA-treated CD34(+) cells compared with control siRNA-treated CD34(+) cells. Transient silencing of PTEN in CD34(+) cells promoted their entry into cell cycle, and increased their expansion in vitro compared with control siRNA-treated CD34(+) cells. When these cells were transduced with retroviral vectors, transduction efficiencies in the bulk CD34(+) cells transfected with PTEN siRNA were significantly higher compared with CD34(+) cells transfected with a control siRNA. Transient PTEN suppression in CD34(+) cells also increased their proliferation and engraftment potential in nonobese diabetic/severe combined immunodeficiency disease with interleukin-2 receptor γ-chain deficiency mice, and maintained their multilineage differentiation capacity in vivo. No mice developed myeloproliferative disorders or leukemias. Similar to findings with murine HSPC, PTEN may also promote quiescence of human HSPC. With optimization of technologies for transfer of siRNA in primary CD34(+) cells, this approach may facilitate investigations into the mechanisms underlying HSPC self-renewal, and could find clinical applications in gene therapy protocols.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.