Evidence map›Paper›PMID 25653833›Full record

ArticleVascular cell2015

Growth factor purification and delivery systems (PADS) for therapeutic angiogenesis.

Eric M George, Huiling Liu, Grant G Robinson, Fakhri Mahdi, Eddie Perkins, Gene L Bidwell

Open access · diamondAbstract read
In one paragraph

Article in Vascular cell, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.9field-weighted citation impact, top 5% 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

24 citing papers in PubMed, 38 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Novel Drug Delivery Technologies and Targets for Renal Disease.Hypertension (Dallas, Tex. : 1979) · 2022
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. VEGF therapy for the kidney: emerging strategies.American journal of physiology. Renal physiology · 2018
    Review
  14. Pro-angiogenic therapeutics for preeclampsia.Biology of sex differences · 2018
    Review
  15. Article
  16. Article
  17. Article
  18. A kidney-selective biopolymer for targeted drug delivery.American journal of physiology. Renal physiology · 2017
    Article
  19. Article
  20. 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

6 authors at 2 institutions in 1 country.

Eric M GeorgeDepartment of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216 USA ; Department of Biochemistry, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216 USA.
Huiling LiuDepartment of Neurology, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216 USA.
Grant G RobinsonDepartment of Neurology, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216 USA.
Fakhri MahdiDepartment of Neurology, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216 USA.
Eddie PerkinsDepartment of Neurosurgery, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216 USA ; Department of Neurobiology and Anatomical Sciences, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216 USA.
Gene L BidwellDepartment of Biochemistry, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216 USA ; Department of Neurology, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216 USA.
State Street (United States) · USUniversity of Mississippi Medical Center · US

Funding

A Novel Protein Delivery System for Therapy of PreeclampsiaR01HL121527 · NHLBI · UNIVERSITY OF MISSISSIPPI MED CTR · PI BIDWELL, GENE LEFLORE · 2014 to 2023
$4.1M
Microcirculation in Renovascular HypertensionR01HL095638 · NHLBI · UNIVERSITY OF MISSOURI-COLUMBIA · PI CHADE, ALEJANDRO ROBERTO · 2010 to 2021
$3.9M
Hypertensive Mechanisms in PreeclampsiaR00HL116774 · NHLBI · UNIVERSITY OF MISSISSIPPI MED CTR · PI GEORGE, ERIC MATTHEW · 2014 to 2016
$746k
NHLBI NIH HHS R00 HL116774NHLBI NIH HHS R01 HL095638NHLBI NIH HHS R01 HL121527
6 · The paper itself

Abstract

backgroundTherapeutic angiogenesis with vascular endothelial growth factor (VEGF), delivered either via recombinant protein infusion or via gene therapy, has shown promise in preclinical models of various diseases including myocardial infarction, renovascular disease, preeclampsia, and neurodegenerative disorders. However, dosing, duration of expression, and tissue specificity are challenges to VEGF gene therapy, and recombinant VEGF delivery suffers from extremely rapid plasma clearance, necessitating continuous infusion and/or direct injection at the site of interest.

methodsHere we describe a novel growth factor purification and delivery system (PADS) generated by fusion of VEGF121 to a protein polymer based on Elastin-like Polypeptide (ELP). ELP is a thermally responsive biopolymer derived from a five amino acid repeat sequence found in human tropoelastin. VEGFPADS were constructed by fusion of the ELP coding sequence in-frame with the VEGF121 coding sequence connected by a flexible di-glycine linker. In vitro activity of VEGFPADS was determined using cell proliferation, tube formation, and migration assays with vascular endothelial cells. Pharmacokinetics and biodistribution of VEGFPADS in vivo were compared to free VEGF in mice using quantitative fluorescence techniques.

resultsELP fusion allowed for recombinant expression and simple, non-chromatographic purification of the ELP-VEGF121 chimera in yields as high as 90 mg/L of culture and at very high purity. ELP fusion had no effect on the VEGF activity, as the VEGFPADS were equally potent as free VEGF121 in stimulating HUVEC proliferation, tube formation, and migration. Additionally, the VEGFPADS had a molecular weight five-fold larger than free VEGF121, which lead to slower plasma clearance and an altered biodistribution after systemic delivery in vivo.

conclusionPADS represent a new method of both purification and in vivo stabilization of recombinant growth factors. The use of this system could permit recombinant growth factors to become viable options for therapeutic angiogenesis in a number of disease models.

Indexed as

Drug deliveryElastin-like polypeptidePurification and delivery systemTherapeutic angiogenesisVascular endothelial growth factor

Identifiers

PMID25653833
PMCPMC4316602
OpenAlexW2161512104

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.