Article
Medicine, General & Internal
Keshab Kumar Karna, Bo-Ram Choi, Chul-Young Kim, Hye-Kyung Kim, Jong-Kwan Park
Summary: This study found that Rubus occidentalis and ellagic acid can induce relaxation of rabbit penile corpus cavernosum smooth muscle by activating the nitric oxide signaling pathway, which may improve erectile function.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Cardiac & Cardiovascular Systems
Jie Su, Pierre Coleman, Angeliki Ntorla, Rhys Anderson, Michael J. Shattock, Joseph R. Burgoyne
Summary: This study demonstrates that the cytosolic DNA sensor cGAS can activate PKGI directly through the generation of cGAMP, showing a link between inflammation and blood pressure regulation.
Article
Microbiology
Ruizhen Li, Wenli Liu, Xiangrui Yin, Fangfang Zheng, Zhenyu Wang, Xingchen Wu, Xiaohua Zhang, Qian Du, Yong Huang, Dewen Tong
Summary: This study found that Brucella outer membrane protein Omp25 could suppress the production of IFN-beta and its downstream IFN-stimulated genes induced by various DNA viruses or IFN-stimulatory DNA. Omp25 promoted the degradation of cyclic GMP-AMP synthase (cGAS) via the ubiquitin-proteasome-dependent pathway, leading to the inhibition of IFN-beta induction in various mammalian monocyte/macrophages.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Avelina Lee, Iryna Lebedyeva, Wenbo Zhi, Vani Senthil, Herjot Cheema, Michael W. Brands, Weston Bush, Nevin A. Lambert, Madeline Snipes, Darren D. Browning
Summary: Phosphodiesterase-5 inhibitors (PDE5i) are being studied for their potential in preventing colon cancer. However, their side-effects and interactions with other drugs have been a concern. By modifying the prototypical PDE5i sildenafil, we developed a new analog called malonyl-sildenafil which exhibited reduced lipophilicity and showed promising effects on colon epithelium. This analog suppressed proliferation in the colon epithelium, providing a novel approach to developing a first-in-class drug for colon cancer chemoprevention.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Cell Biology
Zhilei Wang, Nian Chen, Zhiyong Li, Guang Xu, Xiaoyan Zhan, Jianyuan Tang, Xiaohe Xiao, Zhaofang Bai
Summary: Inflammation is a protective response regulated by the host, with cGAS-STING pathway playing a crucial role in immune defense, viral infections, fatty liver, and cancer metastasis. The potential impact of this pathway in liver diseases has attracted widespread attention, with pharmacological agonists and antagonists offering new therapeutic possibilities. Understanding the mechanisms of cGAS-STING pathway may lead to the development of effective treatments for liver diseases.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Article
Chemistry, Applied
Oswaldo Perez, Nicolaas Schipper, Martin Bollmark
Summary: The synthesis of the cyclic guanosine monophosphorothioate analogue 1a was achieved through a diastereoselective route, utilizing a silyl protection sequence to achieve high selectivity for the desired product. This chromatography-free process allowed for a successful scale-up production of the compound.
ORGANIC PROCESS RESEARCH & DEVELOPMENT
(2021)
Article
Biochemistry & Molecular Biology
Guangshuo Zhu, Kazutaka Ueda, Masaki Hashimoto, Manling Zhang, Masayuki Sasaki, Taro Kariya, Hideyuki Sasaki, Nina Kaludercic, Dong-Ik Lee, Djahida Bedja, Matthew Gabrielson, Yuan Yuan, Nazareno Paolocci, Robert M. Blanton, Richard H. Karas, Michael E. Mendelsohn, Brian O'Rourke, David A. Kass, Eiki Takimoto
Summary: This study found that PDE5i improves heart failure by activating the PKG-PGC1 alpha axis, which enhances mitochondrial respiration and upregulates PGC1 alpha mRNA. However, the cardioprotective effects of PDE5i were abolished in hearts lacking the PGC1 alpha gene.
Article
Environmental Sciences
Xiaofei Wang, Wenzun Lu, Xuanyi Xia, Yuchen Zhu, Chunmei Ge, Xiaoying Guo, Ning Zhang, Hua Chen, Shengmin Xu
Summary: PM2.5 is a widely known atmospheric pollutant that can induce aging-related pulmonary diseases. This study revealed that PM2.5 induced cellular senescence in the lung through inflammatory response and the cGAS/STING/NF-kappa B pathway activated by DNA damage. The pretreatment with seleno-methionine (Se-Met) inhibited inflammatory response and prevented cellular senescence by hindering this pathway.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Review
Medicine, Research & Experimental
Wesam S. Ahmed, Anupriya M. Geethakumari, Kabir H. Biswas
Summary: Phosphodiesterase 5 (PDE5) is a well-studied enzyme that targets cGMP, with therapeutic applications for erectile dysfunction and pulmonary arterial hypertension. Understanding the interaction of PDE5 inhibitors with PDE5 and their structural basis of selectivity is crucial for designing novel drugs.
BIOMEDICINE & PHARMACOTHERAPY
(2021)
Article
Cardiac & Cardiovascular Systems
Qingtong Wang, Ying Wang, Toni M. West, Yongming Liu, Gopireddy R. Reddy, Federica Barbagallo, Bing Xu, Qian Shi, Bingqing Deng, Wei Wei, Yang K. Xiang
Summary: By studying the molecular signaling and positive cardiac contractility induced by beta-blockers in the heart, it was found that carvedilol can promote cardiac inotropy and have a protective effect in diabetic mice. The observations suggest a novel beta(1)AR-NOS3 signaling pathway that may be targeted in therapy for heart diseases with reduced ejection fraction.
CARDIOVASCULAR RESEARCH
(2021)
Article
Cardiac & Cardiovascular Systems
Qingtong Wang, Ying Wang, Toni M. West, Yongming Liu, Gopireddy R. Reddy, Federica Barbagallo, Bing Xu, Qian Shi, Bingqing Deng, Wei Wei, Yang K. Xiang
Summary: The study investigated the molecular signaling and effects of beta-blockers on cardiac inotropy in animal hearts. The results showed that carvedilol, a beta-blocker, can promote cardiac contractility through a specific signaling pathway, restoring heart function in diabetic mice and reducing cell apoptosis and hypertrophy in diabetic hearts.
CARDIOVASCULAR RESEARCH
(2021)
Article
Chemistry, Applied
Ying Yu, Xiaodan Wang, Mingyang Li, Dengyong Liu
Summary: An electrochemical platform based on a novel ternary nanocomposite glassy carbon electrode modified with gold nanoparticles, Ru(bpy)2Cl2, and SMWCNTs is developed for the detection of 5'-GMP. The optimized conditions for the electrochemical sensor include acidic media, which provide high specificity, sensitivity, and selectivity. The sensor exhibits a wide linear range and enhanced sensitivity attributed to the conductivity and electrocatalytic properties of Ru(bpy)2Cl2 and functionalized SMWCNTs. The precise analysis of 5'-GMP in actual broth samples shows satisfactory recovery, making this sensor suitable for market and food enterprises.
Review
Biochemistry & Molecular Biology
Choel Kim, Rajesh Sharma
Summary: The interaction between the C-terminal catalytic domain and the N-terminal regulatory domain of cGMP-dependent protein kinases inhibits the intrinsic activity of the enzyme. Selective binding of cGMP to specific domains within the regulatory domain disrupts this inhibitory interaction, leading to activation of the enzyme. Crystal structures of different domains reveal specific contacts and conformational changes that explain the selectivity and activation of the enzyme by cyclic nucleotides.
Article
Electrochemistry
Yang Huang, Tianyi Gao, Chong Sun, Tingting Han, Mingwu Zang, Daoying Wang, Weimin Xu
Summary: In this study, a novel electrochemical platform based on a ternary nanocomposite of Au-PPy@g-C3N4 was designed for the detection of GMP. The platform showed a linear range, low detection limit, and exhibited stability and anti-interference ability.
ELECTROCHIMICA ACTA
(2022)
Article
Multidisciplinary Sciences
Laurence M. Occelli, Kelian Sun, Paige A. Winkler, Brandy J. Morgan, Simon M. Petersen-Jones
Summary: The purpose of this study was to investigate whether raised levels of retinal cyclic guanosine monophosphate (cGMP) in PDE6A(-/-) dogs was reflected in plasma levels. The results showed that cGMP levels were significantly elevated in retinal samples of 2-month-old PDE6A(-/-) dogs, but there was no significant difference in plasma cGMP levels. Therefore, plasma cGMP levels may not be a useful biomarker for the disease at the 2-month timepoint.
Article
Biochemistry & Molecular Biology
Wataru Ohwada, Masaya Tanno, Toshiyuki Yano, Sang-Bing Ong, Koki Abe, Tatsuya Sato, Atsushi Kuno, Takayuki Miki, Hirohito Sugawara, Yusuke Igaki, Tetsuji Miura
BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR BASIS OF DISEASE
(2020)
Article
Pharmacology & Pharmacy
Ryusuke Hosoda, Hiroki Hamada, Daisuke Uesugi, Naotoshi Iwahara, Iyori Nojima, Yoshiyuki Horio, Atsushi Kuno
Summary: It was found that piceatannol provides better protection against mitochondrial reactive oxygen species through SIRT1- and NRF2/HO1-dependent mechanisms compared to resveratrol. The antioxidative and antiapoptotic effects mediated by NRF2/HO1 pathway could be an advantage of piceatannol over resveratrol for cell protection.
JOURNAL OF PHARMACOLOGY AND EXPERIMENTAL THERAPEUTICS
(2021)
Article
Pharmacology & Pharmacy
Hirohito Sugawara, Norihito Moniwa, Atsushi Kuno, Wataru Ohwada, Arata Osanami, Satoru Shibata, Yukishige Kimura, Koki Abe, Yufu Gocho, Masaya Tanno, Tetsuji Miura
Summary: Moderate activation of the angiotensin II receptor promotes autophagy in renal tubular cells via ULK1-mediated signaling and attenuates renal ischemia/reperfusion injury. The AT(1) receptor, but not the Mas receptor, contributes to Ang II-induced autophagy and renoprotection.
JOURNAL OF PHARMACOLOGICAL SCIENCES
(2021)
Article
Clinical Neurology
Hime Suzuki, Takeshi Mikami, Naotoshi Iwahara, Yukinori Akiyama, Masahiko Wanibuchi, Katsuya Komatsu, Rintaro Yokoyama, Tsukasa Hirano, Ryusuke Hosoda, Yoshiyuki Horio, Atsushi Kuno, Nobuhiro Mikuni
Summary: The study investigated the significance of the arachnoid membrane (AM) in physiological and pathological conditions, focusing on the influence of inflammation and fibrosis. It was found that AM hyperplasia is influenced by aging and may be a result of inflammation and fibrosis through cytokine secretion from the inflammatory cells and fibroblasts in the AM. Additionally, the thickness of the AM was significantly correlated with the expression levels of inflammatory markers like VEGF alpha, TGF beta, and TNF alpha.
Article
Urology & Nephrology
Satoru Shibata, Norihito Moniwa, Atsushi Kuno, Ayumu Kimura, Wataru Ohwada, Hirohito Sugawara, Yufu Gocho, Marenao Tanaka, Toshiyuki Yano, Masato Furuhashi, Masaya Tanno, Takayuki Miki, Tetsuji Miura
Summary: In a clinically relevant model of contrast-induced nephropathy in chronic kidney disease, necroptosis of proximal tubular cells was found to contribute to the development of nephropathy, potentially through suppression of protective autophagy mediated by pro-necroptotic signaling.
CLINICAL AND EXPERIMENTAL NEPHROLOGY
(2021)
Article
Cardiac & Cardiovascular Systems
Yusuke Igaki, Masaya Tanno, Tatsuya Sato, Hidemichi Kouzu, Toshifumi Ogawa, Arata Osanami, Toshiyuki Yano, Atsushi Kuno, Takayuki Miki, Takashi Nakamura, Tetsuji Miura
Summary: The study revealed that there is a functional connection between upregulated AMP deaminase (AMPD) and xanthine oxidoreductase (XOR) in diabetic rat hearts, leading to aggravated ventricular dysfunction. The findings suggest that increased XOR activity and formation of XOR substrates by AMPD contribute to abnormal cardiac function through ROS mediation under conditions of hypertension-induced pressure overload.
JOURNAL OF MOLECULAR AND CELLULAR CARDIOLOGY
(2021)
Review
Cardiac & Cardiovascular Systems
Tetsuji Miura, Atsushi Kuno, Marenao Tanaka
Summary: This article reviews the mechanisms of cardiorenal syndrome and the influence of diabetes on acute myocardial infarction (AMI) and the susceptibility of kidneys to acute kidney injury (AKI). The review highlights that diabetes increases the susceptibility of renal cells to hypoxia and oxidative stress, and also has detrimental effects on infarct size and contractile function of the heart.
AMERICAN JOURNAL OF PHYSIOLOGY-HEART AND CIRCULATORY PHYSIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Takashi Hayashi, Takashi Matsushita, Shin Hisahara, Naotoshi Iwahara, Atsushi Kuno, Risa Kunimoto, Ryusuke Hosoda, Masaya Tanno, Shun Shimohama, Yoshiyuki Horio
Summary: SIRT3 is an NAD(+)-dependent protein deacetylase localized in mitochondria, but studies have shown conflicting data regarding its presence in the cytoplasm or nucleus. SIRT3ct is rapidly degraded by ubiquitin-dependent degradation, with its expression levels regulated by factors like H2O2.
JOURNAL OF BIOCHEMISTRY
(2022)
Article
Cardiac & Cardiovascular Systems
Atsushi Kuno, Ryusuke Hosoda, Miki Tsukamoto, Tatsuya Sato, Hiromi Sakuragi, Nami Ajima, Yukika Saga, Kouhei Tada, Yoshiki Taniguchi, Naotoshi Iwahara, Yoshiyuki Horio
Summary: The study suggests that SIRT1 protects against doxorubicin-induced cardiotoxicity by mediating H2AX phosphorylation through its deacetylation in cardiomyocytes. Treatment with resveratrol, a SIRT1 activator, attenuates doxorubicin-induced cardiac dysfunction by reducing the acetyl-Lys5-H2AX level and preserving the phospho-Ser139-H2AX level.
CARDIOVASCULAR RESEARCH
(2022)
Article
Cardiac & Cardiovascular Systems
Yugo Fujita, Toshiyuki Yano, Hiromitsu Kanamori, Daigo Nagahara, Atsuko Muranaka, Hidemichi Kouzu, Atsushi Mochizuki, Masayuki Koyama, Nobutaka Nagano, Takefumi Fujito, Ryo Nishikawa, Naoyuki Kamiyama, Marenao Tanaka, Atsushi Kuno, Masaya Tanno, Tetsuji Miura
Summary: This study found that the phosphorylation level of nuclear MLKL in cardiomyocytes is associated with left ventricular diastolic dysfunction and future adverse events in DCM patients.
Article
Multidisciplinary Sciences
Naotoshi Iwahara, Kuya Azekami, Ryusuke Hosoda, Iyori Nojima, Shin Hisahara, Atsushi Kuno
Summary: Resveratrol promotes membrane repair through the SIRT1/cortactin axis, possibly by reorganizing the cytoskeleton and enhancing cortactin accumulation at the injury site.
SCIENTIFIC REPORTS
(2022)
Article
Cardiac & Cardiovascular Systems
Satoshi Katano, Toshiyuki Yano, Hidemichi Kouzu, Ryohei Nagaoka, Ryo Numazawa, Kotaro Yamano, Yusuke Fujisawa, Katsuhiko Ohori, Nobutaka Nagano, Takefumi Fujito, Ryo Nishikawa, Wataru Ohwada, Masaki Katayose, Tatsuya Sato, Atsushi Kuno, Masato Furuhashi
Summary: The study aimed to investigate the effect of SGLT2 inhibitors on plasma amino acid profiles in HF patients with T2DM. Results showed that patients receiving SGLT2 inhibitors had higher plasma BAIBA concentrations.
CARDIOVASCULAR DIABETOLOGY
(2022)
Article
Pharmacology & Pharmacy
Ryusuke Hosoda, Ryuta Nakashima, Masaki Yano, Naotoshi Iwahara, Seidai Asakura, Iyori Nojima, Yukika Saga, Risa Kunimoto, Yoshiyuki Horio, Atsushi Kuno
Summary: In this study, the researchers found that resveratrol treatment can alleviate age-related sarcopenia and cardiomyocyte hypertrophy by restoring autophagy. They observed that resveratrol reduces acetylated protein levels and enhances autophagic activity, thus slowing down the aging process.
JOURNAL OF PHARMACOLOGICAL SCIENCES
(2023)
Article
Pharmacology & Pharmacy
Shoya Ino, Toshiyuki Yano, Atsushi Kuno, Masaya Tanno, Hidemichi Kouzu, Tatsuya Sato, Tomohisa Yamashita, Wataru Ohwada, Arata Osanami, Toshifumi Ogawa, Yuki Toda, Masaki Shimizu, Tetsuji Miura
Summary: Accumulating evidence suggests that necroptosis of cardiomyocytes contributes to cardiovascular diseases. Lethal disruption of the plasma membrane in necroptosis is induced by oligomers of mixed lineage kinase domain-like (MLKL) that is translocated to the membrane from the cytosol. However, the role played by cytoplasmic-nuclear shuttling of MLKL is unclear.
JOURNAL OF PHARMACOLOGICAL SCIENCES
(2023)
Article
Cell Biology
Iyori Nojima, Ryusuke Hosoda, Yuki Toda, Yoshiki Saito, Naohiro Ueda, Kouhei Horimoto, Naotoshi Iwahara, Yoshiyuki Horio, Atsushi Kuno
Summary: Downregulation of IGFBP5 through activation of the ERK2 pathway is involved in replicative senescence in embryonic mouse fibroblasts.