Evidence map›Paper›PMID 26907960›Full record

ArticleScientific reports2016

Development of Spexin-based Human Galanin Receptor Type II-Specific Agonists with Increased Stability in Serum and Anxiolytic Effect in Mice.

Arfaxad Reyes-Alcaraz, Yoo-Na Lee, Gi Hoon Son, Nam Hoon Kim, Dong-Kyu Kim, Seongsik Yun, Dong-Hoon Kim, Jong-Ik Hwang, Jae Young Seong

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

33 citing papers in PubMed, 79 citations in OpenAlex.

  1. Article
  2. Article
  3. Biochemical and Physiological Effects of Galanin in Health and Disease.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Review
  4. Emerging roles of spexin in cardiovascular homeostasis.Frontiers in cardiovascular medicine · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Immunoexpression of Spexin in Selected Segments of the Bovine (Animals : an open access journal from MDPI · 2023
    Article
  11. Social stress-induced serotonin dysfunction activates spexin in male Nile tilapia (Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  12. Article
  13. Anxiety and Depression: What Do We Know of Neuropeptides?Behavioral sciences (Basel, Switzerland) · 2022
    Review
  14. Article
  15. Review
  16. Article
  17. Review
  18. Intranasal Delivery of a Methyllanthionine-Stabilized Galanin Receptor-2-Selective Agonist Reduces Acute Food Intake.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2021
    Article
  19. Review
  20. 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

9 authors at 1 institution in 1 country.

Arfaxad Reyes-AlcarazGraduate School of Medicine, Korea University, Seoul 02841, Republic of Korea.
Yoo-Na LeeGraduate School of Medicine, Korea University, Seoul 02841, Republic of Korea.
Gi Hoon SonGraduate School of Medicine, Korea University, Seoul 02841, Republic of Korea.
Nam Hoon KimGraduate School of Medicine, Korea University, Seoul 02841, Republic of Korea.
Dong-Kyu KimGraduate School of Medicine, Korea University, Seoul 02841, Republic of Korea.
Seongsik YunGraduate School of Medicine, Korea University, Seoul 02841, Republic of Korea.
Dong-Hoon KimGraduate School of Medicine, Korea University, Seoul 02841, Republic of Korea.
Jong-Ik HwangGraduate School of Medicine, Korea University, Seoul 02841, Republic of Korea.
Jae Young SeongGraduate School of Medicine, Korea University, Seoul 02841, Republic of Korea.
Korea University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The novel neuropeptide spexin (SPX) was discovered to activate galanin receptor 2 (GALR2) and 3 (GALR3) but not galanin receptor 1 (GALR1). Although GALR2 is known to display a function, particularly in anxiety, depression, and appetite regulation, the further determination of its function would benefit from a more stable and selective agonist that acts only at GALR2. In the present study, we developed a GALR2-specific agonist with increased stability in serum. As galanin (GAL) showed a low affinity to GALR3, the residues in SPX were replaced with those in GAL, revealing that particular mutations such as Gln5 → Asn, Met7 → Ala, Lys11 → Phe, and Ala13 → Pro significantly decreased potencies toward GALR3 but not toward GALR2. Quadruple (Qu) mutation of these residues still retained potency to GALR2 but totally abolished the potency to both GALR3 and GALR1. The first amino acid modifications or D-Asn1 substitution significantly increased the stability when they are incubated in 100% fetal bovine serum. Intracerebroventricular administration of the mutant peptide with D-Asn1 and quadruple substitution (dN1-Qu) exhibited an anxiolytic effect in mice. Taken together, the GALR2-specific agonist with increased stability can greatly help delineation of GALR2-mediated functions and be very useful for treatments of anxiety disorder.

Indexed as

Amino Acid SequenceAmino Acid SubstitutionAnimalsAnti-Anxiety AgentsDrug Evaluation, PreclinicalDrug StabilityHEK293 CellsHumansInhibitory Concentration 50MaleMice, Inbred C57BLMolecular MimicryPeptide HormonesProtein StabilityReceptor, Galanin, Type 2SerumAnti-Anxiety AgentsPeptide HormonesReceptor, Galanin, Type 2SPX protein, human

Identifiers

PMID26907960
PMCPMC4764904
OpenAlexW2275181360

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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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.