Cited by 281Hypothalamic control of reproductive hormonesOlfactory and Sensory Function StudiesNeuropeptides and Animal Physiology

Abnormal development of the olfactory bulb and reproductive system in mice lacking prokineticin receptor PKR2

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Matsumoto, Shun-ichiro, Yamazaki, Chihiro, Masumoto, Koh-hei, Nagano, Mamoru, Naito, Masanori, Soga, Takatoshi, Hiyama, Hideki, Matsumoto, Mitsuyuki +9 more·2006·Proceedings of the National Academy of Sciences

Abstract

Prokineticins, multifunctional secreted proteins, activate two endogenous G protein-coupled receptors PKR1 and PKR2. From in situ analysis of the mouse brain, we discovered that PKR2 is predominantly expressed in the olfactory bulb (OB). To examine the role of PKR2 in the OB, we created PKR1- and PKR2-gene-disrupted mice ( Pkr1 −/− and Pkr2 −/− , respectively). Phenotypic analysis indicated that not Pkr1 −/− but Pkr2 −/− mice exhibited hypoplasia of the OB. This abnormality was observed in the early developmental stages of fetal OB in the Pkr2 −/− mice. In addition, the Pkr2 −/− mice showed severe atrophy of the reproductive system, including the testis, ovary, uterus, vagina, and mammary gland. In the Pkr2 −/− mice, the plasma levels of testosterone and follicle-stimulating hormone were decreased, and the mRNA transcription levels of gonadotropin-releasing hormone in the hypothalamus and luteinizing hormone and follicle-stimulating hormone in the pituitary were also significantly reduced. Immunohistochemical analysis revealed that gonadotropin-releasing hormone neurons were absent in the hypothalamus in the Pkr2 −/− mice. The phenotype of the Pkr2 −/− mice showed similarity to the clinical features of Kallmann syndrome, a human disease characterized by association of hypogonadotropic hypogonadism and anosmia. Our current findings demonstrated that physiological activation of PKR2 is essential for normal development of the OB and sexual maturation.

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Crossref · 10.1073/pnas.0508881103

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  • Prokr2−/− mice exhibit olfactory bulb hypoplasia, hypogonadotropic hypogonadism, and a lack of GnRH neurons in the hypothalamus.

    “Similar to patients with PROKR2 mutations, Prokr2−/− mice exhibit olfactory bulb hypoplasia, hypogonadotropic hypogonadism, and a lack of GnRH neurons in the hypothalamus.”
  • Prok2−/− mice fail to enter puberty, have low gonadotropin levels, and have a significant decrease in hypothalamic GnRH neurons.

    “Likewise, Prok2−/− mice fail to enter puberty, have low gonadotropin levels, and have a significant decrease in hypothalamic GnRH neurons.”

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Authors
Matsumoto, S.-I., Yamazaki, C., Masumoto, K.-H., Nagano, M., Naito, M., Soga, T., Hiyama, H., Matsumoto, M., Takasaki, J., Kamohara, M., Matsuo, A., Ishii, H., Kobori, M., Katoh, M., Matsushime, H., Furuichi, K., & Shigeyoshi, Y.
Affiliations
  • Astellas Pharma (Japan) (JP)
  • Kindai University (JP)
  • Yamaguchi University (JP)
Venue
Proceedings of the National Academy of Sciences
Published
2006-03-02
Volume
103
Issue
11
Pages
4140-4145
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2085057361
Cited by
281
References
51
Citations by year
2026: 2 · 2025: 3 · 2024: 20 · 2023: 12 · 2022: 9 · 2021: 13 · 2020: 11 · 2019: 6 · 2018: 11 · 2017: 16 · 2016: 11 · 2015: 18 · 2014: 15 · 2013: 13 · 2012: 12
FWCI
23.58
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Life Sciences › Neuroscience › Sensory Systems › Olfactory and Sensory Function Studies
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
prokineticins, olfactory bulb development, GnRH neurons, hypogonadotropic hypogonadism, Kallmann syndrome, anosmia, sexual maturation, gonadotropin deficiency, G protein-coupled receptors
MeSH terms
Animals, Base Sequence, Female, Gastrointestinal Hormones, Genitalia, Humans, Gonadotropin-Releasing Hormone, Male, Mice, Inbred C57BL, Neurons, Neuropeptides, Olfactory Bulb, Pregnancy, RNA, Messenger, Sexual Maturation, Kallmann Syndrome, Receptors, Peptide, Mice, Knockout, Receptors, G-Protein-Coupled, Mice

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