Taruno Lab
News
[Announcement] A seminar by Dr. Kouki Touhara on 10/18/2024
Speaker: Kouki Touhara
Position: Postdoctoral Fellow, David Julius lab, Department of Physiology, University of California, San Francisco
Title: Crypt and Villus Enterochromaffin Cells are Distinct Stress Sensors in the Gut
Abstract: The crypt-villus structure of the small intestine serves as a protective barrier, with enterochromaffin (EC) cells, rare sensory epithelial cells that release serotonin, monitoring the mucosal environment. Using a new reporter mouse model, we show that crypt EC cells exhibit two modes of serotonin release: TRPA1-dependent tonic release controlling basal ionic secretion, and irritant-evoked release activating gut sensory neurons. A thick mucus layer prevents TRPA1 receptors on crypt EC cells from responding to luminal irritants like reactive electrophiles; however, if compromised, crypt EC cells become susceptible to activation by these irritants. Villus EC cells detect oxidative stress through TRPM2 channels, co-releasing serotonin and ATP to activate nearby sensory fibers. Our work highlights the importance of intestinal architecture and differential TRP channel expression in sensing noxious stimuli that elicit nausea and/or pain in the gut.
Venue: Lecture Room 1, Kyoto Prefectural University of Medicine
Address: 465 Kajii-cho, Kamigyo ward, Kyoto
Date/Time: 16:30-18:00, Oct 18, 2024
ISOT2024 in beautiful Reykjavik
June 22, 2024
Session: “New insights into transduction and turnover of taste cells" moderated by Sue Kinnamon
Talk title: Distinct and shared traits of taste buds across anatomical locations and species uncovered by single-cell transcriptomics
Speaker: Kengo Nomura
June 24, 2024
Session: “Airway Chemosensation—the Journey from Receptors to Responses—" moderated by Akiyuki Taruno and Thomas Finger
Talk title:
Speaker: Akiyuki Taruno
June 25, 2024
Poster title: Integration of taste information along the gustatory pathway
Speaker: Shogo Soma (Travel Fellowship recipient)
Naofumi Suematsu joined the lab.
April 1, 2024
Welcome!
A commentary on Ammonium Taste is out
December 8, 2023
Taruno. Trends Neurosci - 2023
The 10th Federation of the asian and Oceanian Physiological Societies Congress
November 1, 2023
Speaker: Akiyuki Taruno
Kokoro Inoue, Hiroko Okuda, and Rie Kato joined the lab.
April 1, 2023
Welcome!
Our review paper on salt taste is out.
November 4, 2022
Taruno and Gordon. Annual Review of Physiology - 2022
Ion Channel Modulation Symposium, Clare college, Cambridge
June 22, 2022
Speaker: Akiyuki Taruno
The 44th annual meeting of the Association for Chemoreception Sciences
April 22, 2022
Session: “Career Award Lectures” (Organizers: Danielle Reed)
Talk title: Gustatory neurotransmission mediated via the channel synapse
Speaker: Akiyuki Taruno
Akiyuki Taruno received Mid-career Investigator Award of the Association for Chemoreception Sciences (U.S.A.)
April 20, 2022
The 73rd Korean Physiological Society Annual Meeting, Korea
Oct 27, 2021
Speaker: Kengo Nomura
Speaker: Akiyuki Taruno
Akiyuki Taruno awarded JST CREST funding for the study of peripheral and central mechanisms of taste
Sep 21, 2021
Core Research for Evolutionary Science and Technology
Mark Sherwood joined the lab
September 1, 2021
Welcome!
The 35th Joint Annual Conference of Biomedical Science, Taiwan
June 27, 2021
Speaker: Akiyuki Taruno
The 43nd annual meeting of the Association for Chemoreception Sciences
April 29, 2021
Session: “Cell Types in Taste Buds And Tentacles” (Organizers: Thomas Finger and Sue Cinnamon)
Talk title: Salt-Responsive Cells - A Unique Cell Type?
Speaker: Akiyuki Taruno
Akiyuki Taruno chosen as one of the 2021 recipients of The Young Scientists' Award: The commendation for Science and Technology by the Minister of Education, Culture, Sports, and Technology - Japan.
April 6, 2021
Yu Yamada and Takanori Aoki joined the lab
April 1, 2021
Welcome!
We report post-translational regulation of the CALHM1/3 channel by N-glycosylation and S-palmitoylation, providing insights into the fine control of associated physiological processes including gustation.
March 31, 2021
Okui, Murakami et al. FASEB Journal 2021
Akiyuki Taruno chosen as one of JST FOREST researchers
Feb 2, 2021
Fusion Oriented Research for disruptive Science and Technology
Kengo Nomura chosen as one of JST ACT-X researchers
October 20, 2020
Our review paper on taste transduction and channel synapses is out.
September 17, 2020
Taruno et al. Pflügers Archiv - European Journal of Physiology - 2020
To transmit taste information from taste bud cells to afferent neurons, all taste qualities excluding sour employ the unique "channel synapses" which involves CALHM1/3 channels for neurotransmitter release instead of synaptic vesicles. This review summarizes the current view of taste transduction and neurotransmission with emphasis on our recent discoveries on channel synapses and salty taste.
The fantastic virtual ISOT2020
August 5, 2020
Session: “In bad taste: Sensors and Circuits for Bitter, Salty, and Sour” moderated by Emily Liman and Craig Montell
Talk title: All-electrical Signal Transduction and "Channel Synapses" Mediate Sodium Taste
Speaker: Akiyuki Taruno
We report the structures of CALHM channels (killifish CALHM1, human CALHM2 and C.elegans CLHM-1). The findings provide insights into the structure and ATP permeation of the neurotransmitter-release channel in taste cells. A wonderful collaboration with Nureki Lab (Tokyo U.)
July 17, 2020
Demura et al. Science Advances 2020
Our paper on salty taste is out.We report the identity of taste cells dedicated to the sodium-selective, attractive component of salty taste (aka sodium cells) and their intracellular signal transduction.
March 30, 2020
Nomura et al. Neuron 2020
Now how can we reduce salt intake without losing that delicious taste based on this?
Dr. Shogo Soma joined the lab
July 1, 2019
Welcome!
Dr. Nomura and Mr. Murakami joined the lab
April 1, 2019
Welcome!
We report the localization of CALHM channels in taste cells
February 2019
We report the protocol for AAV-Mediated Gene Delivery into Taste Cells
January 2019
Taruno & Kashio. Methods Mol Biol 2019
We report innate and acquired tolerance to bitter stimuli in mice
December 2018
Mura#, Taruno# et al. PLOS ONE
Taruno Lab started!
September 1, 2018
We report that CALHM1/CALHM3 is the bona fide neurotransmitter-release channel in type II taste cells
May 2018
Ma#, Taruno# et al. Neuron 2018
Review article on ATP release channels
March 2018
Taruno. Int J Mol Sci 2018