Abstract
Several thermosensitive transient receptor potential channels (transient receptor potential vanilloid type-1,-3; transient receptor potential cation channel, subfamily A, member 1) have been implicated in itch. In contrast, the role of transient receptor potential vanilloid type-4 (TRPV4) in itch is unknown. Therefore, we investigated if TRPV4, a temperature-sensitive cation channel, plays an important role in acute itch in mice. Four different pruritogens, including serotonin (5-hydroxytryptamine [5-HT]), histamine, SLIGRL (protease-activated receptors 2/mas-related G-protein-coupled receptor C11 agonist), and chloroquine (mas-related G-protein-coupled receptor A3 agonist), were intradermally injected into mice and itch-related scratching behavior was assessed. TRPV4 knockout mice exhibited significantly fewer 5-HT-evoked scratching bouts compared with wild-type mice. Notably, no differences between TRPV4 knockout and wild-type mice were observed in the number of scratch bouts elicited by SLIGRL and histamine. Pretreatment with a TRPV4 antagonist significantly attenuated 5-HT-evoked scratching in vivo. Using calcium imaging in cultured primary murine dorsal root ganglion neurons, the response of neurons after 5-HT application, but not other pruritogens, was significantly lower in TRPV4 knockout compared with wild-type mice. A TRPV4 antagonist significantly suppressed 5-HT-evoked responses in dorsal root ganglion cells from wild-type mice. Approximately 90% of 5-HT-sensitive dorsal root ganglion neurons were immunoreactive for an antibody to TRPV4, as assessed by calcium imaging. These results indicate that 5-HT-induced itch is linked to TRPV4.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 154-160 |
| Number of pages | 7 |
| Journal | Journal of Investigative Dermatology |
| Volume | 136 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1 2016 |
Fingerprint
ASJC Scopus subject areas
- Biochemistry
- Medicine(all)
- Molecular Biology
- Dermatology
- Cell Biology
Cite this
Involvement of TRPV4 in serotonin-evoked scratching. / Akiyama, Tasuku; Ivanov, Margaret; Nagamine, Masaki; Davoodi, Auva; Carstens, Mirela I.; Ikoma, Akihiko; Cevikbas, Ferda; Kempkes, Cordula; Buddenkotte, Joerg; Steinhoff, Martin; Carstens, Earl.
In: Journal of Investigative Dermatology, Vol. 136, No. 1, 01.01.2016, p. 154-160.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Involvement of TRPV4 in serotonin-evoked scratching
AU - Akiyama, Tasuku
AU - Ivanov, Margaret
AU - Nagamine, Masaki
AU - Davoodi, Auva
AU - Carstens, Mirela I.
AU - Ikoma, Akihiko
AU - Cevikbas, Ferda
AU - Kempkes, Cordula
AU - Buddenkotte, Joerg
AU - Steinhoff, Martin
AU - Carstens, Earl
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Several thermosensitive transient receptor potential channels (transient receptor potential vanilloid type-1,-3; transient receptor potential cation channel, subfamily A, member 1) have been implicated in itch. In contrast, the role of transient receptor potential vanilloid type-4 (TRPV4) in itch is unknown. Therefore, we investigated if TRPV4, a temperature-sensitive cation channel, plays an important role in acute itch in mice. Four different pruritogens, including serotonin (5-hydroxytryptamine [5-HT]), histamine, SLIGRL (protease-activated receptors 2/mas-related G-protein-coupled receptor C11 agonist), and chloroquine (mas-related G-protein-coupled receptor A3 agonist), were intradermally injected into mice and itch-related scratching behavior was assessed. TRPV4 knockout mice exhibited significantly fewer 5-HT-evoked scratching bouts compared with wild-type mice. Notably, no differences between TRPV4 knockout and wild-type mice were observed in the number of scratch bouts elicited by SLIGRL and histamine. Pretreatment with a TRPV4 antagonist significantly attenuated 5-HT-evoked scratching in vivo. Using calcium imaging in cultured primary murine dorsal root ganglion neurons, the response of neurons after 5-HT application, but not other pruritogens, was significantly lower in TRPV4 knockout compared with wild-type mice. A TRPV4 antagonist significantly suppressed 5-HT-evoked responses in dorsal root ganglion cells from wild-type mice. Approximately 90% of 5-HT-sensitive dorsal root ganglion neurons were immunoreactive for an antibody to TRPV4, as assessed by calcium imaging. These results indicate that 5-HT-induced itch is linked to TRPV4.
AB - Several thermosensitive transient receptor potential channels (transient receptor potential vanilloid type-1,-3; transient receptor potential cation channel, subfamily A, member 1) have been implicated in itch. In contrast, the role of transient receptor potential vanilloid type-4 (TRPV4) in itch is unknown. Therefore, we investigated if TRPV4, a temperature-sensitive cation channel, plays an important role in acute itch in mice. Four different pruritogens, including serotonin (5-hydroxytryptamine [5-HT]), histamine, SLIGRL (protease-activated receptors 2/mas-related G-protein-coupled receptor C11 agonist), and chloroquine (mas-related G-protein-coupled receptor A3 agonist), were intradermally injected into mice and itch-related scratching behavior was assessed. TRPV4 knockout mice exhibited significantly fewer 5-HT-evoked scratching bouts compared with wild-type mice. Notably, no differences between TRPV4 knockout and wild-type mice were observed in the number of scratch bouts elicited by SLIGRL and histamine. Pretreatment with a TRPV4 antagonist significantly attenuated 5-HT-evoked scratching in vivo. Using calcium imaging in cultured primary murine dorsal root ganglion neurons, the response of neurons after 5-HT application, but not other pruritogens, was significantly lower in TRPV4 knockout compared with wild-type mice. A TRPV4 antagonist significantly suppressed 5-HT-evoked responses in dorsal root ganglion cells from wild-type mice. Approximately 90% of 5-HT-sensitive dorsal root ganglion neurons were immunoreactive for an antibody to TRPV4, as assessed by calcium imaging. These results indicate that 5-HT-induced itch is linked to TRPV4.
UR - http://www.scopus.com/inward/record.url?scp=84959471003&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84959471003&partnerID=8YFLogxK
U2 - 10.1038/JID.2015.388
DO - 10.1038/JID.2015.388
M3 - Article
C2 - 26763435
AN - SCOPUS:84959471003
VL - 136
SP - 154
EP - 160
JO - Journal of Investigative Dermatology
JF - Journal of Investigative Dermatology
SN - 0022-202X
IS - 1
ER -