Evidence map›Paper›PMID 19905033›Full record

ArticleBiochemistry2009

Design and pharmacological characterization of inhibitors of amantadine-resistant mutants of the M2 ion channel of influenza A virus.

Victoria Balannik, Jun Wang, Yuki Ohigashi, Xianghong Jing, Emma Magavern, Robert A Lamb, William F Degrado, Lawrence H Pinto

Open access · greenAbstract read
In one paragraph

Article in Biochemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed
5.2field-weighted citation impact, top 4% 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

64 citing papers in PubMed, 104 citations in OpenAlex.

  1. Review
  2. Understanding and controlling pandemic influenza.Proceedings of the Japan Academy. Series B, Physical and biological sciences · 2026
    Review
  3. Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Antiviral Drugs in Influenza.International journal of environmental research and public health · 2022
    Review
  10. Article
  11. Review
  12. M2 amphipathic helices facilitate pH-dependent conformational transition in influenza A virus.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

4 more citing papers are in PubMed but not listed here.

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

8 authors at 2 institutions in 2 countries.

Victoria BalannikDepartment of Neurobiology and Physiology, Northwestern University, Evanston, Illinois 60208-3500, USA.
Jun Wang
Yuki Ohigashi
Xianghong Jing
Emma Magavern
Robert A Lamb
William F Degrado
Lawrence H Pinto
Northwestern University · USHoward Hughes Medical Institute · US

Funding

The Structure and Function of the Influenza Virus GenomeR01AI020201 · NIAID · NORTHWESTERN UNIVERSITY · PI LAMB, ROBERT A · 1985 to 2016
$2.8M
Studies on Influenza B Virus BM2 Protein Ion ChannelR01AI057363 · NIAID · NORTHWESTERN UNIVERSITY · PI PINTO, LAWRENCE H · 2005 to 2009
$1.4M
CONTROL OF CELL MOTILITYR01GM056416 · NIGMS · UNIVERSITY OF MINNESOTA TWIN CITIES · PI SAMMAK, PAUL J · 1997 to 2000
$132k
Howard Hughes Medical InstituteNIAID NIH HHS R01 AI020201NIAID NIH HHS R01 AI057363NIAID NIH HHS R01 AI-20201NIAID NIH HHS R01 AI-57363NIAID NIH HHS R01 AI-74517NIGMS NIH HHS GM56416
6 · The paper itself

Abstract

The A/M2 proton channel of influenza A virus is a target for the anti-influenza drugs amantadine and rimantadine, whose effectiveness was diminished by the appearance of naturally occurring point mutants in the A/M2 channel pore, among which the most common are S31N, V27A, and L26F. We have synthesized and characterized the properties of a series of compounds, originally derived from the A/M2 inhibitor BL-1743. A lead compound emerging from these investigations, spiro[5.5]undecan-3-amine, is an effective inhibitor of wild-type A/M2 channels and L26F and V27A mutant ion channels in vitro and also inhibits replication of recombinant mutant viruses bearing these mutations in plaque reduction assays. Differences in the inhibition kinetics between BL-1743, known to bind inside the A/M2 channel pore, and amantadine were exploited to demonstrate competition between these compounds, consistent with the conclusion that amantadine binds inside the channel pore. Inhibition by all of these compounds was shown to be voltage-independent, suggesting that their charged groups are within the N-terminal half of the pore, prior to the selectivity filter that defines the region over which the transmembrane potential occurs. These findings not only help to define the location and mechanism of binding of M2 channel-blocking drugs but also demonstrate the feasibility of discovering new inhibitors that target this binding site in a number of amantadine-resistant mutants.

Indexed as

Drug Resistance, ViralPoint MutationAmantadineAnimalsAntiviral AgentsBinding, CompetitiveCell LineDogsDrug Delivery SystemsImidazolesInfluenza A virusIon ChannelsOocytesSpiro CompoundsViral Matrix ProteinsViroporin Proteins2-(3-azaspiro(5,5)undecanol)-2-imidazolineAmantadineAntiviral AgentsImidazolesIon ChannelsM2 protein, Influenza A virusSpiro CompoundsViral Matrix ProteinsViroporin Proteins

Identifiers

PMID19905033
PMCPMC2794939
OpenAlexW2034419471

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.