Evidence map›Paper›PMID 18824759›Full record

ArticleCirculation2008

Short hairpin RNA interference therapy for ischemic heart disease.

Mei Huang, Denise A Chan, Fangjun Jia, Xiaoyan Xie, Zongjin Li, Grant Hoyt, Robert C Robbins, Xiaoyuan Chen, Amato J Giaccia, Joseph C Wu

Open access · bronzeAbstract read
In one paragraph

Article in Circulation, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
3.2field-weighted citation impact, top 7% 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

51 citing papers in PubMed, 94 citations in OpenAlex.

  1. Review
  2. Article
  3. PHD1-3 oxygen sensors in vivo-lessons learned from gene deletions.Pflugers Archiv : European journal of physiology · 2024
    Review
  4. Review
  5. Article
  6. Recent advances in gene therapy for atrial fibrillation.Journal of cardiovascular electrophysiology · 2021
    Review
  7. Cardiotoxic effects of angiogenesis inhibitors.Clinical science (London, England : 1979) · 2021
    Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Creatine kinase in ischemic and inflammatory disorders.Clinical and translational medicine · 2016
    Review
  17. HIF-P4H-2 deficiency protects against skeletal muscle ischemia-reperfusion injury.Journal of molecular medicine (Berlin, Germany) · 2016
    Article
  18. Article
  19. Article
  20. Article
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

10 authors at 3 institutions in 3 countries.

Mei HuangStanford University School of Medicine, Edwards Building R354, Stanford, CA 94305-5344, USA.
Denise A Chan
Fangjun Jia
Xiaoyan Xie
Zongjin Li
Grant Hoyt
Robert C Robbins
Xiaoyuan Chen
Amato J Giaccia
Joseph C Wu
Stanford University · USChina XD Group (China) · CNXerox (France) · FR

Funding

Nanostructuring and Molecular Imaging of Engineered Cardiovascular TissuesR33HL089027 · NHLBI · STANFORD UNIVERSITY · PI WU, JOSEPH C. · 2009 to 2011
$2.3M
Nanostructuring and Molecular Imaging of Engineered Cardiovascular TissuesR21HL089027 · NHLBI · STANFORD UNIVERSITY · PI WU, JOSEPH C. · 2007 to 2008
$777k
Molecular Imaging of Cardiac Cell TransplantationK08HL074883 · NHLBI · STANFORD UNIVERSITY · PI WU, JOSEPH C. · 2005 to 2008
$531k
NHLBI NIH HHS HL074883NHLBI NIH HHS HL089027NHLBI NIH HHS K08 HL074883NHLBI NIH HHS R21 HL089027NHLBI NIH HHS R33 HL089027
6 · The paper itself

Abstract

backgroundDuring hypoxia, upregulation of hypoxia inducible factor-1 alpha transcriptional factor can activate several downstream angiogenic genes. However, hypoxia inducible factor-1 alpha is naturally degraded by prolyl hydroxylase-2 (PHD2) protein. Here we hypothesize that short hairpin RNA (shRNA) interference therapy targeting PHD2 can be used for treatment of myocardial ischemia and this process can be followed noninvasively by molecular imaging. METHODS AND

resultsPHD2 was cloned from mouse embryonic stem cells by comparing the homolog gene in human and rat. The best candidate shRNA sequence for inhibiting PHD2 was inserted into the pSuper vector driven by the H1 promoter followed by a separate hypoxia response element-incorporated promoter driving a firefly luciferase reporter gene. This construct was used to transfect mouse C2C12 myoblast cell line for in vitro confirmation. Compared with the control short hairpin scramble (shScramble) as control, inhibition of PHD2 increased levels of hypoxia inducible factor-1 alpha protein and several downstream angiogenic genes by >30% (P<0.01). Afterward, shRNA targeting PHD2 (shPHD2) plasmid was injected intramyocardially following ligation of left anterior descending artery in mice. Animals were randomized into shPHD2 experimental group (n=25) versus shScramble control group (n=20). Bioluminescence imaging detected plasmid-mediated transgene expression for 4 to 5 weeks. Echocardiography showed the shPHD2 group had improved fractional shortening compared with the shScramble group at Week 4 (33.7%+/-1.9% versus 28.4%+/-2.8%; P<0.05). Postmortem analysis showed increased presence of small capillaries and venules in the infarcted zones by CD31 staining. Finally, Western blot analysis of explanted hearts also confirmed that animals treated with shPHD2 had significantly higher levels of hypoxia inducible factor-1 alpha protein.

conclusionsThis is the first study to image the biological role of shRNA therapy for improving cardiac function. Inhibition of PHD2 by shRNA led to significant improvement in angiogenesis and contractility by in vitro and in vivo experiments. With further validation, the combination of shRNA therapy and molecular imaging can be used to track novel cardiovascular gene therapy applications in the future.

Indexed as

RNA InterferenceAnimalsCell HypoxiaCell LineDNA-Binding ProteinsEchocardiographyFemaleHypoxia-Inducible Factor 1Hypoxia-Inducible Factor-Proline DioxygenasesImmediate-Early ProteinsLuminescent MeasurementsMiceMice, Inbred StrainsMyoblastsMyocardial IschemiaMyocardiumDNA-Binding ProteinsEgln1 protein, mouseHypoxia-Inducible Factor 1Hypoxia-Inducible Factor-Proline DioxygenasesImmediate-Early ProteinsProcollagen-Proline DioxygenaseRNA, Small Interfering

Identifiers

PMID18824759
PMCPMC3657507
OpenAlexW2014740708

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.