Article
Biochemistry & Molecular Biology
Asuna Sugimoto, Kokoro Iwata, Rika Kurogoushi, Manami Tanaka, Yumiko Nakashima, Yoshihito Yamakawa, Atsushi Oishi, Keigo Yoshizaki, Satoshi Fukumoto, Akihito Yamamoto, Naozumi Ishimaru, Tsutomu Iwamoto
Summary: This study investigated the role of the C-terminus of the PIEZO1 gene in bone marrow-derived mesenchymal stem cells. The study found that the C-terminus plays an important role in regulating calcium influx and activating the ERK1/2 signaling pathway.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2023)
Article
Cell Biology
Luigi Sforna, Antonio Michelucci, Francesco Morena, Chiara Argentati, Fabio Franciolini, Massimo Vassalli, Sabata Martino, Luigi Catacuzzeno
Summary: Regulatory volume decrease (RVD) is critical in controlling cell functions like migration, and is mainly sustained by swelling-activated Cl- current (I-Cl,I-swell) modulated by cytoplasmic Ca2+. Piezo1 controls RVD and migration in HEK293T cells by modulating I-Cl,I-swell through Ca2+ influx, with different expression levels affecting cell migration ability.
JOURNAL OF CELLULAR PHYSIOLOGY
(2022)
Article
Multidisciplinary Sciences
Takatoshi Uchida, Shota Shimizu, Reiko Yamagishi, Suzumi M. Tokuoka, Yoshihiro Kita, Megumi Honjo, Makoto Aihara
Summary: The study found that Piezo1 is abundantly expressed in the trabecular meshwork and can regulate trabecular meshwork cell contraction by modulating Ca2+ influx and release of arachidonic acid and PGE(2). This suggests that Piezo1 could act as a regulator to control intraocular pressure.
SCIENTIFIC REPORTS
(2021)
Article
Biochemistry & Molecular Biology
Sandip M. Swain, Rodger A. Liddle
Summary: Both Piezo1 and TRPV4 ion channels are independently implicated in high venous pressure- and fluid shear stress-induced vascular hyperpermeability in endothelial cells. Piezo1 regulates TRPV4 channel activation in endothelial cells, with TRPV4 opening being dependent on the strength and duration of fluid shear stress. The deleterious effects initiated by Piezo1 in response to shear stress require the involvement of TRPV4 channels, as demonstrated by the calcium signaling and disruption of cellular integrity observed in endothelial cells.
JOURNAL OF BIOLOGICAL CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Takashi Miyano, Atsushi Suzuki, Naoya Sakamoto
Summary: This study assessed the role of transient receptor potential vanilloid 4 (TRPV4) channel-mediated calcium influx in hyperosmolarity-induced epithelial-mesenchymal transition (EMT). The findings suggest that TRPV4 channels contribute to the EMT of tubular epithelial cells under hyperosmotic stress.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Natalia Zeber-Lubecka, Maria Kulecka, Katarzyna Zaleska-Oracka, Michalina Dabrowska, Aneta Balabas, Ewa E. Hennig, Magdalena Szymanek-Szwed, Michal Mikula, Beata Jurkiewicz, Jerzy Ostrowski
Summary: The aim of this study is to determine the molecular differences between the bladder body and trigonal urothelia. The analysis of transcriptomes and microbiomes revealed functional differences between the two regions and significant differences in bacterial taxa in urine.
Article
Pharmacology & Pharmacy
Zhinoos Taidi, Tommy Zhou, Kate H. Moore, Kylie J. Mansfield, Lu Liu
Summary: Inflammatory conditions of the urinary bladder are associated with urothelial damage and loss of function. The purinergic P2X7 receptor plays a role in such inflammatory conditions and may be a new therapeutic target for bladder inflammation.
FRONTIERS IN PHARMACOLOGY
(2021)
Article
Cell Biology
Thais Porto Ribeiro, Solene Barbeau, Isabelle Baudrimont, Pierre Vacher, Veronique Freund-Michel, Guillaume Cardouat, Patrick Berger, Christelle Guibert, Thomas Ducret, Jean-Francois Quignard
Summary: In this study, the role of endothelial Piezo1 in intrapulmonary vascular relaxation was investigated in a chronic hypoxia model of pulmonary hypertension (PH). The results showed that endothelial Piezo1 contributes to intrapulmonary vascular relaxation in the early stage of PH by controlling endothelial [Ca2+]i, endothelial-dependent hyperpolarization, and Akt-eNOS pathway activation.
Article
Pharmacology & Pharmacy
Amanda de Carvalho Pereira, Alice Valenca Araujo, Michele Paulo, Roberto Santana da Silva, Lusiane Maria Bendhack
Summary: RuBPY decreases intracellular calcium concentration by blocking calcium influx and activating the guanylyl cyclase-cGMP-GK pathway, resulting in reduced vascular contraction. These findings suggest that RuBPY increases Ca2+ storage through SERCA activation and inhibition of capacitive Ca2+ influx.
CLINICAL AND EXPERIMENTAL PHARMACOLOGY AND PHYSIOLOGY
(2022)
Article
Food Science & Technology
Qiao Bai, Xiaopin Feng, Yu Wang, Chunyu Wu, Ye Liu, Jiao Sun, Tianli Yue, Fangyu Long
Summary: This study optimized the ultrasonic-assisted pectinase extraction conditions to obtain the maximum cyclic adenosine monophosphate (cAMP) yield from jujube. The results showed that jujube cAMP regulated the cytokine balance in the allergy pathway and prevented allergy symptoms.
FOOD SCIENCE AND HUMAN WELLNESS
(2023)
Review
Cell Biology
Winni Gao, Hamza Hasan, Devon E. Anderson, Whasil Lee
Summary: Mechanical factors and chondrocyte mechanotransduction play critical roles in the pathogenesis of joint disorders like osteoarthritis, with potential therapeutic strategies targeting mechanotransducers to prevent progressive cartilage degeneration.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Yi Xu, Yiqian Huang, Xiaoqing Cheng, Bin Hu, Danling Jiang, Lidong Wu, Shengliang Peng, Jialing Hu
Summary: Fibrosis can occur in various organs and poses a serious threat to global health. Piezo1, as a mechanism-sensitive calcium channel, plays a significant role in the development of fibrotic diseases.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2023)
Article
Urology & Nephrology
Jia-Fong Jhang, Yung-Hsiang Hsu, Yuan-Hong Jiang, Han-Chen Ho, Hann-Chorng Kuo
Summary: The study examined the clinical significance of ESSIC bladder histopathological classification on treatment outcomes for patients with interstitial cystitis/bladder pain syndrome. Results showed that patients with histopathological findings had more favorable treatment outcomes compared to those without such findings.
JOURNAL OF UROLOGY
(2021)
Article
Biochemistry & Molecular Biology
Jin Kono, Masakatsu Ueda, Atsushi Sengiku, Sylvia O. Suadicani, Osamu Ogawa, Hiromitsu Negoro
Summary: The study suggests that urothelial Cx43 mediated ATP signaling and coordination of urothelial activity are essential for proper perception and regulation of responses to bladder distension in the animals' awake, active phase. This research highlights the significant role of Cx43 in bladder function.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biology
Anamika Dayal, Monica L. Fernandez-Quintero, Klaus R. Liedl, Manfred Grabner
Summary: Research shows that while DHPR Ca2+ influx is not essential for EC coupling, it plays a significant role in other muscle physiological and developmental pathways. Two genetically engineered mouse models carrying Ca2+ non-conducting DHPRs had contradictory results, highlighting the importance of studying the permeability and selectivity properties of DHPR(N617).
Article
Medicine, Research & Experimental
Fumikazu Sano, Eiji Shigetomi, Youichi Shinozaki, Haruka Tsuzukiyama, Kozo Saito, Katsuhiko Mikoshiba, Hiroshi Horiuchi, Dennis Lawrence Cheung, Junichi Nabekura, Kanji Sugita, Masao Aihara, Schuichi Koizumi
Summary: The study demonstrates that in a drug-induced status epilepticus model, the activation of microglia and astrocytes at different time points collaboratively contributes to epileptogenesis, with microglial activation in the early phase and astrocytic activation in the late phase being implicated in enhancing seizure susceptibility.
Article
Neurosciences
Masayoshi Tanaka, Eiji Shigetomi, Bijay Parajuli, Hiroaki Nagatomo, Youichi Shinozaki, Yuri Hirayama, Kozo Saito, Yuto Kubota, Yosuke Danjo, Ji Hwan Lee, Sun Kwang Kim, Junichi Nabekura, Schuichi Koizumi
Summary: mGluR5 in astrocytes is regulated by ATP/adenosine signals, which helps control synapse remodeling and potentially contributes to disease pathogenesis.
Article
Immunology
Yosuke Danjo, Eiji Shigetomi, Yukiho J. Hirayama, Kenji Kobayashi, Tatsuya Ishikawa, Yugo Fukazawa, Keisuke Shibata, Kenta Takanashi, Bijay Parajuli, Youichi Shinozaki, Sun Kwang Kim, Junichi Nabekura, Schuichi Koizumi
Summary: The activation of astrocytes plays a crucial role in brain plasticity and the development of neurological disorders. The presence of mGluR5 in astrocytes, which is absent under normal conditions, is essential for regulating synaptic plasticity and neuronal activity, particularly in the somatosensory cortex.
JOURNAL OF EXPERIMENTAL MEDICINE
(2022)
Article
Multidisciplinary Sciences
Tatsuya Ihara, Hiroshi Shimura, Sachiko Tsuchiya, Mie Kanda, Satoru Kira, Norifumi Sawada, Masayuki Takeda, Takahiko Mitsui, Eiji Shigetomi, Yoichi Shinozaki, Schuichi Koizumi
Summary: Dysregulation of circadian rhythm can cause nocturia. This study investigated the circadian rhythm of fatty acid metabolites and their effect on voiding in mice. The findings highlighted the novel effect of lipids on the pathology of nocturia, which may be used for development of biomarkers and better therapies for nocturia.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
Bijay Parajuli, Youichi Shinozaki, Eiji Shigetomi, Schuichi Koizumi
Summary: This study presents a simplified method for non-invasive transplantation of induced pluripotent stem cell-derived human microglia (iPSMG) into the mouse brain via the transnasal route. The combination with pharmacological depletion of endogenous microglia allows for the evaluation of the in vivo role of human microglia in physiological and pathological brain functions.
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2022)
Article
Neurosciences
Yosuke M. Morizawa, Mami Matsumoto, Yuka Nakashima, Narumi Endo, Tomomi Aida, Hiroshi Ishikane, Kaoru Beppu, Satoru Moritoh, Hitoshi Inada, Noriko Osumi, Eiji Shigetomi, Schuichi Koizumi, Guang Yang, Hirokazu Hirai, Kohichi Tanaka, Kenji F. Tanaka, Nobuhiko Ohno, Yugo Fukazawa, Ko Matsui
Summary: The study found that motor learning induces synaptic engulfment by cerebellar Bergmann glia (BG), which contributes to synaptic pruning during the improvement of motor adaptation.
NATURE NEUROSCIENCE
(2022)
Review
Neurosciences
Eiji Shigetomi, Schuichi Koizumi
Summary: Astrocytes in the brain interact with neurons and blood vessels, receive signals from various sources, and regulate cell function. Activation of G-protein coupled receptors in astrocytes leads to changes in intracellular signaling and has been linked to behavior and psychiatric diseases. Recent research has shown that astrocytic activity plays a crucial role in behavior flexibility, stress response, and emotions. This review summarizes the recent progress on the role of astrocytes in behaviors related to emotion and motivation.
NEUROSCIENCE RESEARCH
(2023)
Review
Biochemistry & Molecular Biology
Youichi Shinozaki, Kenji Kashiwagi, Schuichi Koizumi
Summary: Astrocytes, a type of glial cells in the nervous system, play crucial roles in regulating the physiological functions of the central nervous system. In diseases like glaucoma, astrocytes can undergo phenotypic changes and exhibit immune functions, which are associated with various pathological events such as tissue remodeling, neuronal death, and infiltration of immune cells. This review focuses on discussing the involvement of astrocyte-lineage cells' immune functions in the pathogenesis of glaucoma.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Neurosciences
Youichi Shinozaki, Kozo Saito, Kenji Kashiwagi, Schuichi Koizumi
Summary: ATP, the energy source in cells, can be released to the extracellular space and serve as a signaling molecule. In the eye, ATP release in response to physiological stimuli regulates intraocular pressure, and dysregulated ATP signaling may contribute to elevated intraocular pressure and glaucoma pathogenesis.
Article
Multidisciplinary Sciences
Youichi Shinozaki, Alex Leung, Kazuhiko Namekata, Sei Saitoh, Huy Bang Nguyen, Akiko Takeda, Yosuke Danjo, Yosuke M. Morizawa, Eiji Shigetomi, Fumikazu Sano, Nozomu Yoshioka, Hirohide Takebayashi, Nobuhiko Ohno, Takahiro Segawa, Kunio Miyake, Kenji Kashiwagi, Takayuki Harada, Shin-ichi Ohnuma, Schuichi Koizumi
Summary: Loss of ABCA1 in retinal astrocytes causes glaucoma-like optic neuropathy in aged mice, leading to retinal ganglion cell degeneration and ocular dysfunction.
Article
Medicine, Research & Experimental
Tatsuya Ihara, Youichi Shinozaki, Eiji Shigetomi, Yosuke Danjo, Sachiko Tsuchiya, Mie Kanda, Manabu Kamiyama, Masayuki Takeda, Schuichi Koizumi, Takahiko Mitsui
Summary: In this study, GPR55 was found to be predominantly expressed in bladder urothelial cells. The results showed that PEA could induce the release of Ca2+ and stimulate the release of NGF and PGI2 in urothelial cells, leading to micturition reflex activation and nocturia.
Article
Multidisciplinary Sciences
Masashi Kakae, Hiroki Nakajima, Shota Tobori, Ayaka Kawashita, Jun Miyanohara, Misa Morishima, Kazuki Nagayasu, Takayuki Nakagawa, Eiji Shigetomi, Schuichi Koizumi, Yasuo Mori, Shuji Kaneko, Hisashi Shirakawa
Summary: Vascular cognitive impairment (VCI) refers to cognitive alterations caused by vascular disease and is associated with various types of dementia. Using a CCH-induced VCI model, researchers investigated the role of TRPA1 in this condition and found that TRPA1 in astrocytes prevents cognitive impairment and white matter injury. Stimulation of TRPA1 with cinnamaldehyde improved the outcomes of VCI. The study also revealed that TRPA1-induced production of leukemia inhibitory factor (LIF) in astrocytes promoted myelination of oligodendrocyte precursor cells.