Localization of transient receptor potential ion channels in primary and motile cilia of the female murine reproductive organs

TY - JOUR

T1 - Localization of transient receptor potential ion channels in primary and motile cilia of the female murine reproductive organs

AU - Teilmann, Stefan C.

AU - Byskov, Anne Grete

AU - Pedersen, Per Amstrup

AU - Wheatley, Denys N.

AU - Pazour, Gregory J.

AU - Christensen, Søren Tvorup

N1 - Keywords ovary • granulosa cells • oviduct • cilia • polycystin • TRPV4 • reproduction

PY - 2005

Y1 - 2005

N2 - We have examined the subcellular localization of transient receptor potential (TRP) ion channels and the potential sensory role of cilia in murine female reproductive organs using confocal laser scanning microscopy analysis on ovary and oviduct tissue sections as well as on primary cultures of follicular granulosa cells. We show that the Ca2+ permeable cation channel, polycystin-2, as well as polycystin-1, a receptor that forms a functional protein complex with polycystin 2, distinctively localize to primary cilia emerging from granulosa cells of antral follicles in vivo and in vitro. Both polycystins are localized to motile oviduct cilia and this localization is greatly increased upon ovulatory gonadotropic stimulation. Further, the Ca2+ permeable cation channel, TRP vaniloid 4 (TRPV4), localizes to a sub-population of motile cilia on the epithelial cells of the ampulla and isthmus with high intensity in proximal invaginations of the epithelial folds. These observations are the first to demonstrate ciliary localization of TRP ion channels and their possible receptor function in the female reproductive organs. We suggest that polycystins 1 and 2 play an important role in granulosa cell differentiation and in development and maturation of ovarian follicles. In the oviduct both TRPV4 and polycystins could be important in relaying physiochemical changes in the oviduct upon ovulation. Mol. Reprod. Dev. © 2005 Wiley-Liss, Inc.

AB - We have examined the subcellular localization of transient receptor potential (TRP) ion channels and the potential sensory role of cilia in murine female reproductive organs using confocal laser scanning microscopy analysis on ovary and oviduct tissue sections as well as on primary cultures of follicular granulosa cells. We show that the Ca2+ permeable cation channel, polycystin-2, as well as polycystin-1, a receptor that forms a functional protein complex with polycystin 2, distinctively localize to primary cilia emerging from granulosa cells of antral follicles in vivo and in vitro. Both polycystins are localized to motile oviduct cilia and this localization is greatly increased upon ovulatory gonadotropic stimulation. Further, the Ca2+ permeable cation channel, TRP vaniloid 4 (TRPV4), localizes to a sub-population of motile cilia on the epithelial cells of the ampulla and isthmus with high intensity in proximal invaginations of the epithelial folds. These observations are the first to demonstrate ciliary localization of TRP ion channels and their possible receptor function in the female reproductive organs. We suggest that polycystins 1 and 2 play an important role in granulosa cell differentiation and in development and maturation of ovarian follicles. In the oviduct both TRPV4 and polycystins could be important in relaying physiochemical changes in the oviduct upon ovulation. Mol. Reprod. Dev. © 2005 Wiley-Liss, Inc.

U2 - 10.1002/mrd.20312

DO - 10.1002/mrd.20312

M3 - Journal article

SN - 1040-452X

VL - 71

SP - 444

EP - 452

JO - Molecular Reproduction and Development

JF - Molecular Reproduction and Development

IS - 4

ER -