Evidence map›Paper›PMID 21264447›Full record

ArticleThrombosis and haemostasis2011

Factor VIII delivered by haematopoietic stem cell-derived B cells corrects the phenotype of haemophilia A mice.

Ali Ramezani, Lynnsey A Zweier-Renn, Robert G Hawley

Open access · greenAbstract read
In one paragraph

Article in Thrombosis and haemostasis, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.8field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 22 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Gene therapy for hemophilia.Frontiers in bioscience (Landmark edition) · 2015
    Review
  9. Development of Gene Transfer for Induction of Antigen-specific Tolerance.Molecular therapy. Methods & clinical development · 2014
    Article
  10. Review
  11. Engineered Hematopoietic Stem Cells as Therapeutics for Hemophilia A.Journal of genetic syndromes & gene therapy · 2011
    Article
  12. Recent Advances in Gene Therapy for Hemophilia.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Ali RamezaniDepartment of Anatomy and Regenerative Biology, The George Washington University, Washington, DC 20037, USA.
Lynnsey A Zweier-Renn
Robert G Hawley
George Washington University · US

Funding

Molecular Chimerism Therapy for Hemophilia AR01HL065519 · NHLBI · GEORGE WASHINGTON UNIVERSITY · PI HAWLEY, ROBERT G. · 2001 to 2009
$3.0M
Embryoid Body-derived Hematopoietic Stem Cell LinesR01HL066305 · NHLBI · GEORGE WASHINGTON UNIVERSITY · PI HAWLEY, ROBERT G. · 2001 to 2005
$1.7M
NHLBI NIH HHS R01 HL065519NHLBI NIH HHS R01 HL066305NHLBI NIH HHS R01HL65519NHLBI NIH HHS R01HL66305
6 · The paper itself

Abstract

The main impediments to clinical application of haematopoietic stem cell (HSC) gene therapy for treatment of haemophilia A are the bone marrow transplant-related risks and the potential for insertional mutagenesis caused by retroviral vectors. To circumvent these limitations, we have adapted a non-myeloablative conditioning regimen and directed factor VIII (FVIII) protein synthesis to B lineage cells using an insulated lentiviral vector containing an immunoglobulin heavy chain enhancer-promoter. Transplantation of lentiviral vector-modified HSCs resulted in therapeutic levels of FVIII in the circulation of all transplanted mice for the duration of the study (six months). Immunostaining of spleen cells showed that the majority of FVIII was synthesised by B220+ B cells and CD138+ plasma cells. Subsequent challenge with recombinant FVIII elicited at most a minor anti-FVIII antibody response, demonstrating induction of immune hyporesponsiveness. All transplant recipients exhibited clot formation and survived tail clipping, indicating correction of their haemophilic phenotype. Therapeutic levels of FVIII could be transferred to secondary recipients by bone marrow transplantation, confirming gene transfer into long-term repopulating HSCs. Moreover, short-term therapeutic FVIII levels could also be achieved in secondary recipients by adoptive transfer of HSC-derived splenic B cells. Our findings support pursuit of B cell-directed protein delivery as a potential clinical approach to treat haemophilia A and other disorders correctable by systemically distributed proteins.

Indexed as

Adoptive TransferAnimalsB-LymphocytesCell DifferentiationCell LineageDisease Models, AnimalFactor VIIIGenetic TherapyGenetic VectorsHematopoietic Stem CellsHematopoietic Stem Cell TransplantationHemophilia AHemorrhageHumansImmunoglobulin Heavy ChainsLentivirusFactor VIIIImmunoglobulin Heavy Chains

Identifiers

PMID21264447
PMCPMC3117307
OpenAlexW2150001402

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.