Cited by 122Hypothalamic control of reproductive hormonesReproductive biology and impacts on aquatic speciesNeuropeptides and Animal Physiology

Molecular and functional characterization of a novel gonadotropin-releasing-hormone receptor isolated from the common octopus (Octopus vulgaris)

Open access
Kanda, Atsuhiro, Takahashi, Toshio, Satake, Honoo, Minakata, Hiroyuki·2006·Biochemical Journal

Abstract

GnRH (gonadotropin-releasing hormone) plays a pivotal role in the regulation of reproduction in vertebrates through interaction with a specific receptor. Previously, we isolated a GnRH homologue, oct-GnRH, from the common octopus (Octopus vulgaris). In the present study, we have identified a GnRH receptor (oct-GnRHR) specific for oct-GnRH from Octopus brain. Oct-GnRHR includes domains and motifs typical of vertebrate GnRH receptors. The intron-inserted positions are conserved between oct-GnRHR and the chordate GnRHR genes. The oct-GnRHR expressed in Xenopus (South African clawed frog) oocytes was responsive to oct-GnRH, but not to any other HPLC fractions of the Octopus brain extract. These results show that oct-GnRHR is an authentic receptor for oct-GnRH. Southern blotting of reverse-transcription PCR products revealed that the oct-GnRHR mRNA was widely distributed in the central and peripheral nervous systems and in several peripheral tissues. In situ hybridization showed that oct-GnRHR mRNA was expressed in some regions involved in autonomic functions, feeding, memory and movement. Oct-GnRH was shown to induce steroidogenesis of testosterone, progesterone and 17beta-oestradiol in Octopus ovary and testis, where oct-GnRHR was abundantly expressed. These results suggest that oct-GnRH, like its vertebrate counterparts, acts as a multifunctional neurotransmitter, neuromodulator and hormone-like factor, both in Octopus central nervous system and peripheral tissues, and that both structure and functions of the GnRH family are, at least partially, evolutionarily conserved between octopuses and chordates.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1042/bj20051615

Cites

39 of 39 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Kanda, A., Takahashi, T., Satake, H., & Minakata, H.
Affiliations
Suntory Institute for Bioorganic Research, 1-1-1 Wakayamadai, Shimamoto-cho, Mishima-gun, Osaka 618-8503, Japan
Venue
Biochemical Journal
Published
2006-03-15
Volume
395
Issue
1
Pages
125-135
ISSN
  • 0264-6021 (ISSN-L)
  • 1470-8728
OpenAlex
W2086669857
Cited by
122
References
39
Citations by year
2026: 3 · 2025: 2 · 2024: 5 · 2023: 6 · 2022: 1 · 2021: 5 · 2020: 5 · 2019: 8 · 2018: 4 · 2017: 7 · 2016: 8 · 2015: 11 · 2014: 3 · 2013: 10 · 2012: 10
FWCI
8.11
Type
journal article
Language
en
Open access
Locations
  • Biochemical Journal (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Reproductive biology and impacts on aquatic species
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
GnRH receptor, Octopus vulgaris, octopus, steroidogenesis, reproductive control, neurotransmitters, neuromodulators, intron positions, cephalopod reproduction
MeSH terms
Amino Acid Sequence, Animals, Brain, Cloning, Molecular, Exons, Introns, Ligands, Male, Molecular Sequence Data, Oocytes, Phylogeny, Receptors, LHRH, RNA, Messenger, Gonadal Steroid Hormones, Spermatozoa, Xenopus, Sequence Alignment, Protein Structure, Tertiary, Sequence Analysis, Protein, Gene Expression Profiling, Protein Transport, Octopodiformes

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review