Article
Cell Biology
Li Zhang, Xinyang Yu, Yue Wu, Huijia Fu, Ping Xu, Yangxi Zheng, Li Wen, Xiaotao Yang, Fumei Zhang, Mingyu Hu, Hao Wang, Xiyao Liu, Juan Qiao, Chuan Peng, Rufei Gao, Richard Saffery, Yong Fu, Hongbo Qi, Chao Tong, Mark D. Kilby, Philip N. Baker
Summary: The study found that GDM is associated with impaired glycolysis, AMPK activity, GLUT3 expression, and cell survival in the placenta. Hyperglycemia induced similar changes in trophoblasts, and these changes were rescued by AMPK activation. AMPK activation upregulates trophoblast glucose uptake by stimulating GLUT3 translocation, which is beneficial for viability.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Article
Biology
Sandy MacMillan, Andrew P. Holmes, Mark L. Dallas, Amira D. Mahmoud, Michael J. Shipston, Chris Peers, D. Grahame Hardie, Prem Kumar, A. Mark Evans
Summary: This study reveals that LBK1 is a critical regulator of carotid body chemosensing, highlighting a difference in dependency on LKB1 and AMPK between the carotid body and the hypoxic ventilatory response.
COMMUNICATIONS BIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Yi Ren, Jiaqing Chen, Peishi Chen, Qi Hao, Leng-Kuan Cheong, Mingzhu Tang, Lian-Lian Hong, Xuan-Yu Hu, Celestial T. Yap, Boon-Huat Bay, Zhi-Qiang Ling, Han -Ming Shen
Summary: Mutations in LKB1 lead to increased susceptibility of NSCLC cells to glucose starvation-induced cell death, which triggers oxidative stress and AMPK protein oxidation, eventually resulting in cell death. This process can be effectively reversed and rescued by 2DG, A769662, and NAC.
FREE RADICAL BIOLOGY AND MEDICINE
(2021)
Article
Cell Biology
Malgorzata Tokarska-Schlattner, Laurence Kay, Pascale Perret, Raffaella Isola, Stephane Attia, Frederic Lamarche, Cindy Tellier, Cecile Cottet-Rousselle, Amjad Uneisi, Isabelle Hininger-Favier, Marc Foretz, Herve Dubouchaud, Catherine Ghezzi, Christian Zuppinger, Benoit Viollet, Uwe Schlattner
Summary: AMPK, a key regulator of energy homeostasis, plays important roles in maintaining cardiac function under increased workload conditions. Deletion of AMPK genes in cardiomyocytes did not affect heart function under physiological conditions, but led to alterations in response to increased workload. AMPK deletion also resulted in decreased basal metabolic rate and locomotor activity, along with changes in cardiac mitochondrial function and bioenergetics.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Article
Physiology
Masayo Iwasa, Shiina Takezoe, Naoko Kitaura, Takatoshi Sutani, Hidetoshi Miyazaki, Wataru Aoi
Summary: This study investigated the mechanism of milk casein hydrolysate and its derived peptides on glucose uptake and metabolic signaling in skeletal muscle cells, finding that milk casein hydrolysate enhances glucose uptake by activating insulin-independent AMP-activated protein kinase signaling. This finding is important for preventing metabolic diseases and improving exercise performance.
EXPERIMENTAL PHYSIOLOGY
(2021)
Review
Biochemistry & Molecular Biology
Fiona M. Russell, David Grahame Hardie
Summary: AMP-activated protein kinase (AMPK) plays a crucial role in regulating cellular energy balance by promoting ATP production and inhibiting cell growth. It may restrain aberrant growth before tumorigenesis, but support the survival of cancer cells once cancer has arisen.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Multidisciplinary Sciences
Shuhei Kanagaki, Yusuke Tsutsui, Naoki Kobayashi, Takashi Komine, Minoru Ito, Yunike Akasaka, Michiaki Nagasawa, Tomohiro Ide, Naoki Omae, Kazuhisa Nakao, Makoto Rembutsu, Maki Iwago, Aki Yonezawa, Yusei Hosokawa, Tetsuya Hosooka, Wataru Ogawa, Koji Murakami
Summary: We have identified a small-molecule compound (RX-375) that activates AMPK and inhibits fatty acid synthesis in human hepatocytes. RX-375 interacts with prohibitins (PHB1 and PHB2) to induce dissociation of the AMPK-PHB complex, resulting in AMPK activation. Administration of RX-375 to obese mice activates AMPK and improves liver steatosis. Our findings highlight the importance of the AMPK-PHB interaction and suggest compounds that disrupt this interaction as a class of AMPK activators.
Article
Endocrinology & Metabolism
Hui Chen, Xiongze Zhang, Nanying Liao, Yuying Ji, Lan Mi, Yuhong Gan, Yongyue Su, Feng Wen
Summary: This study investigated the expression of GLP-1R, SGLT1, SGLT2, GLUT1, and GLUT2 in DR patients and found that GLP-1R and SGLT2 were significantly decreased in PDR patients. Their decrease was associated with an increased level of expression of TNF-alpha and IFN-gamma, suggesting a potential correlation between defective GLP-1R and SGLT2 signaling and immune response cytokines in PDR patients.
FRONTIERS IN ENDOCRINOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Takashi Kanamori, Yuto Miki, Masataka Katou, Shun-ichiro Ogura, Hideya Yuasa
Summary: We have developed a glucose-linked biphenyl photosensitizer with brighter fluorescence and enhanced photodamaging effect against cancer cells. This photosensitizer can pass through glucose transporters, allowing for selective uptake and potential use in cancer photodynamic therapy.
BIOORGANIC & MEDICINAL CHEMISTRY
(2022)
Article
Cell Biology
Verica Paunovic, Stojan Peric, Irena Vukovic, Marina Stamenkovic, Emina Milosevic, Danijela Stevanovic, Milos Mandic, Ivana Basta, Ivana Berisavac, Mirjana Arsenijevic, Ivo Bozovic, Marko Nikolic, Zorica Stevic, Vladimir Trajkovic
Summary: The study found that patients with GBS had significantly reduced activation of the LKB1/AMPK signaling pathway compared to the control group. However, there were no significant differences in the activation status of the AKT/mTOR/4EBP1 pathway or the levels of autophagy markers between the two groups. The downregulation of the LKB1/AMPK pathway was associated with higher clinical activity and worse outcomes of GBS.
Article
Nutrition & Dietetics
Kai Aoki, Takuji Suzuki, Fang Hui, Takuro Nakano, Koki Yanazawa, Masato Yonamine, Shinichiro Fujita, Takehito Sugasawa, Yasuko Yoshida, Naomi Omi, Yasushi Kawakami, Kazuhiro Takekoshi
Summary: This study showed that acute low-intensity exercise affects the expression of molecules involved in intestinal carbohydrate digestion and absorption through GLP-2, leading to higher plasma GLP-2 levels and increased expression of GLP-2 receptor, SI, and GLUT2 in the jejunum in mice. These results suggest that exercise may be beneficial for small intestine function in individuals with intestinal frailty.
Article
Gastroenterology & Hepatology
Manli Hu, Dingran Zhang, Hongyang Xu, Yan Zhang, Hongjie Shi, Xiaoli Huang, Xinhui Wang, Yan Wu, Zhili Qi
Summary: The study found that SAL can protect against metabolic-stress-induced NASH progression by activating the AMPK signaling pathway, indicating that SAL could be a potential drug component for NASH therapy.
Review
Cardiac & Cardiovascular Systems
Lin Wang, Yin Cai, Liguo Jian, Chi Wai Cheung, Liangqing Zhang, Zhengyuan Xia
Summary: The prevalence of cardiomyopathy is higher in diabetic patients, yet there are no specific drugs for treating DCM despite decades of investigations. Targeting PPAR alpha activation may be an important strategy in patients with diabetes, metabolic syndrome, and atherosclerotic cardiovascular diseases.
CARDIOVASCULAR DIABETOLOGY
(2021)
Article
Integrative & Complementary Medicine
Chih-Chieh Chen, Chong-Kuei Lii, Chia-Wen Lo, Yi-Hsueh Lin, Ya-Chen Yang, Chin-Shiu Huang, Haw-Wen Chen
Summary: DeAND can improve insulin resistance in muscles by activating the AMP-activated protein kinase (AMPK) signaling pathway, leading to enhanced glucose uptake and insulin sensitivity.
AMERICAN JOURNAL OF CHINESE MEDICINE
(2021)
Article
Gastroenterology & Hepatology
Suehelay Acevedo-Acevedo, Megan L. Stefkovich, Sun Woo Sophie Kang, Rory P. Cunningham, Constance M. Cultraro, Natalie Porat-Shliom
Summary: This study reveals the important role of liver kinase B1 (LKB1) in the transition from feeding to fasting states in the liver. Knocking out LKB1 leads to significant changes in the hepatic lobule and metabolic inefficiency in the whole body.
HEPATOLOGY COMMUNICATIONS
(2022)