Expression of prokineticin 2 and its receptor in the macaque monkey brain

Katherine J. Burton, Xiaohan Li, Baoan Li, Michelle Y. Cheng, Henryk Urbanski, Qun Yong Zhou

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    Prokineticin 2 (PK2) has been indicated as an output signaling molecule for the suprachiasmatic nucleus (SCN) circadian clock. Most of these studies were performed with nocturnal animals, particularly mice and rats. In the current study, the PK2 and its receptor, PKR2, was cloned from a species of diurnal macaque monkey. The macaque monkey PK2 and PKR2 were found to be highly homologous to that of other mammalian species. The mRNA expression of PK2 and PKR2 in the macaque brain was examined by in situ hybridization. The expression patterns of PK2 and PKR2 in the macaque brain were found to be quite similar to that of the mouse brain. Particularly, PK2 mRNA was shown to oscillate in the SCN of the macaque brain in the same phase and with similar amplitude with that of nocturnal mouse brain. PKR2 expression was also detected in known primary SCN targets, including the midline thalamic and hypothalamic nuclei. In addition, we detected the expression of PKR2 mRNA in the dorsal raphe nucleus (DR) of both macaque and mouse brains. As a likely SCN to dorsal raphe projection has previously been indicated, the expression of PKR2 in the raphe nuclei of both macaque and mouse brain signifies a possible role of DR as a previously unrecognized primary SCN projection target.

    Original languageEnglish (US)
    Pages (from-to)191-199
    Number of pages9
    JournalChronobiology International
    Volume33
    Issue number2
    DOIs
    StatePublished - Feb 7 2016

    Fingerprint

    Macaca
    Haplorhini
    Suprachiasmatic Nucleus
    Brain
    Messenger RNA
    Midline Thalamic Nuclei
    Circadian Clocks
    Raphe Nuclei
    In Situ Hybridization
    Dorsal Raphe Nucleus

    Keywords

    • circadian clock
    • diurnal
    • G proteincoupled receptor
    • monkey
    • Prokineticin 2
    • suprachiasmatic nucleus

    ASJC Scopus subject areas

    • Physiology
    • Physiology (medical)

    Cite this

    Expression of prokineticin 2 and its receptor in the macaque monkey brain. / Burton, Katherine J.; Li, Xiaohan; Li, Baoan; Cheng, Michelle Y.; Urbanski, Henryk; Zhou, Qun Yong.

    In: Chronobiology International, Vol. 33, No. 2, 07.02.2016, p. 191-199.

    Research output: Contribution to journalArticle

    Burton, Katherine J. ; Li, Xiaohan ; Li, Baoan ; Cheng, Michelle Y. ; Urbanski, Henryk ; Zhou, Qun Yong. / Expression of prokineticin 2 and its receptor in the macaque monkey brain. In: Chronobiology International. 2016 ; Vol. 33, No. 2. pp. 191-199.
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