Evidence map›Paper›PMID 26121982›Full record

ArticleMolecular pharmacology2015

Structure-Function Basis of Attenuated Inverse Agonism of Angiotensin II Type 1 Receptor Blockers for Active-State Angiotensin II Type 1 Receptor.

Takanobu Takezako, Hamiyet Unal, Sadashiva S Karnik, Koichi Node

Open access · bronzeAbstract read
In one paragraph

Article in Molecular pharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 17% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Latest Knowledge on the Role of Vitamin D in Hypertension.International journal of molecular sciences · 2023
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  13. Article
  14. The non-biphenyl-tetrazole angiotensin ATBritish journal of pharmacology · 2018
    Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. 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

4 authors at 3 institutions in 3 countries.

Takanobu TakezakoDepartment of Advanced Heart Research, Saga University, Saga, Japan (T.T.); Department of Cardiovascular Medicine, Saga University, Saga, Japan (K.N.); Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (H.U., S.S.K.); Department of Biosignal Pathophysiology, Kobe University Graduate School of Medicine, Kobe, Japan (T.T.); and Department of Basic Sciences, Faculty of Pharmacy and Betul Ziya Eren Genome and Stem Cell Center, Erciyes University, Kayseri, Turkey (H.U.) takezakot@people.kobe-u.ac.jp.
Hamiyet UnalDepartment of Advanced Heart Research, Saga University, Saga, Japan (T.T.); Department of Cardiovascular Medicine, Saga University, Saga, Japan (K.N.); Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (H.U., S.S.K.); Department of Biosignal Pathophysiology, Kobe University Graduate School of Medicine, Kobe, Japan (T.T.); and Department of Basic Sciences, Faculty of Pharmacy and Betul Ziya Eren Genome and Stem Cell Center, Erciyes University, Kayseri, Turkey (H.U.).
Sadashiva S KarnikDepartment of Advanced Heart Research, Saga University, Saga, Japan (T.T.); Department of Cardiovascular Medicine, Saga University, Saga, Japan (K.N.); Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (H.U., S.S.K.); Department of Biosignal Pathophysiology, Kobe University Graduate School of Medicine, Kobe, Japan (T.T.); and Department of Basic Sciences, Faculty of Pharmacy and Betul Ziya Eren Genome and Stem Cell Center, Erciyes University, Kayseri, Turkey (H.U.).
Koichi NodeDepartment of Advanced Heart Research, Saga University, Saga, Japan (T.T.); Department of Cardiovascular Medicine, Saga University, Saga, Japan (K.N.); Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (H.U., S.S.K.); Department of Biosignal Pathophysiology, Kobe University Graduate School of Medicine, Kobe, Japan (T.T.); and Department of Basic Sciences, Faculty of Pharmacy and Betul Ziya Eren Genome and Stem Cell Center, Erciyes University, Kayseri, Turkey (H.U.).
Cleveland Clinic · USKobe University · JPSaga University · JP

Funding

Molecular Basis of Ang II Receptor FunctionsR01HL057470 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI KARNIK, SADASHIVA S · 1997 to 2013
$4.4M
TRAINING PROGRAM IN VASCULAR CELL BIOLOGYT32HL007914 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI PLOW, EDWARD FRANKLIN · 1999 to 2011
$2.2M
Structure-Guided Studied of GPCRs of RASR01HL132351 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI KARNIK, SADASHIVA S · 2017 to 2019
$1.6M
Regulation of AT1R-signaling and pathology in vessels through microRNAR01HL115964 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI KARNIK, SADASHIVA S · 2012 to 2015
$1.5M
NHLBI NIH HHS HL007914NHLBI NIH HHS R01 HL057470NHLBI NIH HHS R01 HL115964NHLBI NIH HHS R01 HL132351NHLBI NIH HHS R01-HL57470NHLBI NIH HHS T32 HL007914
6 · The paper itself

Abstract

Ligand-independent signaling by the angiotensin II type 1 receptor (AT1R) can be activated in clinical settings by mechanical stretch and autoantibodies as well as receptor mutations. Transition of the AT1R to the activated state is known to lower inverse agonistic efficacy of clinically used AT1R blockers (ARBs). The structure-function basis for reduced efficacy of inverse agonists is a fundamental aspect that has been understudied not only in relation to the AT1R but also regarding other homologous receptors. Here, we demonstrate that the active-state transition in the AT1R indeed attenuates an inverse agonistic effect of four biphenyl-tetrazole ARBs through changes in specific ligand-receptor interactions. In the ground state, tight interactions of four ARBs with a set of residues (Ser109(TM3), Phe182(ECL2), Gln257(TM6), Tyr292(TM7), and Asn295(TM7)) results in potent inverse agonism. In the activated state, the ARB-AT1R interactions shift to a different set of residues (Val108(TM3), Ser109(TM3), Ala163(TM4), Phe182(ECL2), Lys199(TM5), Tyr292(TM7), and Asn295(TM7)), resulting in attenuated inverse agonism. Interestingly, V108I, A163T, N295A, and F182A mutations in the activated state of the AT1R shift the functional response to the ARB binding toward agonism, but in the ground state the same mutations cause inverse agonism. Our data show that the second extracellular loop is an important regulator of the functional states of the AT1R. Our findings suggest that the quest for discovering novel ARBs, and improving current ARBs, fundamentally depends on the knowledge of the unique sets of residues that mediate inverse agonistic potency in the two states of the AT1R.

Indexed as

Drug Inverse AgonismAmino Acid SequenceAngiotensin II Type 1 Receptor BlockersAnimalsBinding SitesChlorocebus aethiopsCOS CellsMolecular Sequence DataMutation, MissenseProtein BindingRatsReceptor, Angiotensin, Type 1Angiotensin II Type 1 Receptor BlockersReceptor, Angiotensin, Type 1

Identifiers

PMID26121982
PMCPMC4551048
OpenAlexW1821621537

What OpenQuestion 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 OpenQuestion graph.