Evidence map›Paper›PMID 25935648›Full record

ArticleThrombosis research2015

Allosteric inhibition of factor XIa. Sulfated non-saccharide glycosaminoglycan mimetics as promising anticoagulants.

Rami A Al-Horani, David Gailani, Umesh R Desai

Abstract read
In one paragraph

Article in Thrombosis research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

30 citing papers in PubMed, 44 citations in OpenAlex.

  1. Chemical Synthesis and Biochemical Evaluation of Decasulfated Galloylglucopyranose Heparin Mimetic.Cardiovascular & hematological agents in medicinal chemistry · 2026
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  6. Review
  7. Substituted 4H-3,1-benzoxazine-4-one Derivatives as Inhibitors of Cathepsin G.Medicinal chemistry (Shariqah (United Arab Emirates)) · 2024
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Murine Models in the Evaluation of Heparan Sulfate-Based Anticoagulants.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Rami A Al-HoraniDepartment of Medicinal Chemistry and Institute for Structural Biology and Drug Discovery, Virginia Commonwealth University, Richmond, VA 23219, United States.
David GailaniDepartments of Pathology, Immunology and Microbiology, Vanderbilt University Medical Center, Nashville, TN 37203, United States.
Umesh R DesaiDepartment of Medicinal Chemistry and Institute for Structural Biology and Drug Discovery, Virginia Commonwealth University, Richmond, VA 23219, United States. Electronic address: urdesai@vcu.edu.
Virginia Commonwealth University · US

Funding

Therapeutic assessment of synthetic heparin sulfates in transplantation modelsP01HL107152 · NHLBI · VIRGINIA COMMONWEALTH UNIVERSITY · PI DESAI, UMESH RAMANLAL · 2011 to 2017
$15.8M
Physiology and Molecular Biology of Factor XIR01HL058837 · NHLBI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI GAILANI, DAVID · 1997 to 2017
$6.4M
Dual Direct Inhibitors of Thrombin and Factor XaR01HL090586 · NHLBI · VIRGINIA COMMONWEALTH UNIVERSITY · PI DESAI, UMESH RAMANLAL · 2009 to 2018
$3.9M
Factor Xl in Vascular ThrombosisR01HL081326 · NHLBI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI GAILANI, DAVID · 2007 to 2017
$3.5M
NHLBI NIH HHS P01 HL107152NHLBI NIH HHS R01 HL058837NHLBI NIH HHS R01 HL081326NHLBI NIH HHS R01 HL090586
6 · The paper itself

Abstract

Recent development of sulfated non-saccharide glycosaminoglycan mimetics, especially sulfated pentagalloyl glucopyranoside (SPGG), as potent inhibitors of factor XIa (FXIa) (J. Med. Chem. 2013; 56:867-878 and J. Med. Chem. 2014; 57:4805-4818) has led to a strong possibility of developing a new line of factor XIa-based anticoagulants. In fact, SPGG represents the first synthetic, small molecule inhibitor that appears to bind in site remote from the active site. Considering that allosteric inhibition of FXIa is a new mechanism for developing a distinct line of anticoagulants, we have studied SPGG's interaction with FXIa with a goal of evaluating its pre-clinical relevance. Comparative inhibition studies with several glycosaminoglycans revealed the importance of SPGG's non-saccharide backbone. SPGG did not affect the activity of plasma kallikrein, activated protein C and factor XIIIa suggesting that SPGG-based anticoagulation is unlikely to affect other pathways connected with coagulation factors. SPGG's effect on APTT of citrated human plasma was also not dependent on antithrombin or heparin cofactor II. Interestingly, SPGG's anticoagulant potential was diminished by serum albumin as well as factor XI, while it could be reversed by protamine or polybrene, which implies possible avenues for developing antidote strategy. Studies with FXIa mutants indicated that SPGG engages Lys529, Arg530 and Arg532, but not Arg250, Lys252, Lys253 and Lys255. Finally, SPGG competes with unfractionated heparin, but not with polyphosphates and/or glycoprotein Ibα, for binding to FXIa. These studies enhance understanding on the first allosteric inhibitor of FXIa and highlight its value as a promising anticoagulant.

Indexed as

Allosteric SiteAnticoagulantsBinding SitesBiomimetic MaterialsDrug DesignFactor XIaGlucosidesHumansKineticsProtein BindingSerumSulfuric Acid EstersAnticoagulantsFactor XIaGlucosidessulfated pentagalloylglucosideSulfuric Acid Esters

Identifiers

PMID25935648
PMCPMC4526391
OpenAlexW2077608534

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.