Evidence map›Paper›PMID 27994744›Full record

ArticleACS medicinal chemistry letters2016

Buried Hydrogen Bond Interactions Contribute to the High Potency of Complement Factor D Inhibitors.

Chao-Yie Yang, James G Phillips, Jeanne A Stuckey, Longchuan Bai, Haiying Sun, James Delproposto, William Clay Brown, Krishnapriya Chinnaswamy

Open access · greenAbstract read
In one paragraph

Article in ACS medicinal chemistry letters, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

7 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Review
  3. Novel Insights into Factor D Inhibition.International journal of molecular sciences · 2022
    Review
  4. Article
  5. Review
  6. Review
  7. NMRThe journal of physical chemistry letters · 2018
    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

8 authors at 2 institutions in 2 countries.

Chao-Yie YangDepartments of Internal Medicine and Biological Chemistry and Life Sciences Institute, University of Michigan , Ann Arbor, Michigan 48109, United States.
James G PhillipsDepartment of Translational Hematology and Oncology Research, Taussig Cancer Institute , Cleveland Clinic, Cleveland, Ohio 44195, United States.
Jeanne A StuckeyDepartments of Internal Medicine and Biological Chemistry and Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States; Departments of Internal Medicine and Biological Chemistry and Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States.
Longchuan BaiDepartments of Internal Medicine and Biological Chemistry and Life Sciences Institute, University of Michigan , Ann Arbor, Michigan 48109, United States.
Haiying SunJiansu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University , Nanjing 210009, China.
James DelpropostoDepartments of Internal Medicine and Biological Chemistry and Life Sciences Institute, University of Michigan , Ann Arbor, Michigan 48109, United States.
William Clay BrownDepartments of Internal Medicine and Biological Chemistry and Life Sciences Institute, University of Michigan , Ann Arbor, Michigan 48109, United States.
Krishnapriya ChinnaswamyDepartments of Internal Medicine and Biological Chemistry and Life Sciences Institute, University of Michigan , Ann Arbor, Michigan 48109, United States.
China Pharmaceutical University · CNCleveland Clinic · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aberrant activation of the complement system is associated with diseases, including paroxysmal nocturnal hemoglobinuria and age-related macular degeneration. Complement factor D is the rate-limiting enzyme for activating the alternative pathway in the complement system. Recent development led to a class of potent amide containing pyrrolidine derived factor D inhibitors. Here, we used biochemical enzymatic and biolayer interferometry assays to demonstrate that the amide group improves the inhibitor potency by more than 80-fold. Our crystal structures revealed buried hydrogen bond interactions are important. Molecular orbital analysis from quantum chemistry calculations dissects the chemical groups participating in these interactions. Free energy calculation supports the differential contributions of the amide group to the binding affinities of these inhibitors. Cell-based hemolysis assay confirmed these compounds inhibit factor D mediated complement activation via the alternative pathway. Our study highlights the important interactions contributing to the high potency of factor D inhibitors reported recently.

Indexed as

age-related macular degenerationbiolayer interferometry assaycomplement factor D inhibitorscomplement systemcomputational dockingcrystal structureenzyme inhibition assayhemolysis assaymolecular dynamics simulationsParoxysmal nocturnal hemoglobinuriaquantum chemistry calculationsserine proteasethermodynamic integration method

Identifiers

PMID27994744
PMCPMC5151139
OpenAlexW2519441422

What Socratic holds

Textmetadata
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 Socratic graph.