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国产顶刊Vita:胎儿如何在“饥饿”环境中茁壮成长?黄荷凤/林圣彩院士团队发现肝脏里的“保护开关”
生物世界· 2026-03-13 08:00
Core Viewpoint - The research reveals how fetal liver maintains active anabolic metabolism in a low glucose environment through specific post-translational modification of TRPV4 protein, which prevents the inhibition of mTORC1, thus safeguarding fetal development [3][17]. Metabolic Regulation - Two key metabolic regulators in mammalian cells are mTORC1 and AMPK. mTORC1 promotes anabolic processes when nutrients are abundant, while AMPK is activated during energy deficiency to promote catabolism [6][7]. Fetal Liver's Unique Mechanism - The resistance to low glucose-induced mTORC1 inhibition occurs specifically in fetal liver tissue, unlike other fetal tissues such as heart, lung, and muscle, where mTORC1 is significantly inhibited under similar conditions [9]. Mechanism Exploration - The study identifies TRPV4 protein as crucial for this phenomenon. In fetal liver, TRPV4 undergoes acetylation at the K608 site, making it insensitive to inhibition by unbound aldolase, thus blocking the low glucose signal to mTORC1 [11][12]. Regulatory Network - The high acetylation level of TRPV4 in fetal liver is maintained by a precise regulatory network involving acetyltransferase P300 and deacetylases SIRT2 and SIRT7. This indicates that TRPV4's acetylation is not driven by substrate concentration but by enzyme activity [14]. Clinical Significance - Understanding how fetuses maintain growth in low-nutrition environments could provide new strategies for preventing and treating intrauterine growth restriction, which affects approximately 5%-10% of pregnancies [17]. Additionally, this discovery may offer new insights into metabolic diseases and cancers related to abnormal mTORC1 signaling [18].
西湖大学推出高水平学术期刊Vita,施一公和Cell Research原主编李党生出任主编
生物世界· 2025-08-18 10:30
Core Viewpoint - The establishment of the Life Sciences Open Alliance aims to enhance international collaboration in talent cultivation, innovative research, resource sharing, and multi-modal transformation in the life sciences sector [3]. Group 1: Alliance Formation - The Life Sciences Open Alliance was launched on August 12, 2025, involving nine high-level universities and research institutions from mainland China and six universities from Hong Kong and Macau [3]. - The initial focus of the alliance will be on high-level international journals, research data sharing platforms, and biological resource repositories [3]. Group 2: Journal Development - West Lake University has initiated a new journal named "Vita," which will adopt an open access model and aims to become a leading international academic journal in the life sciences [6]. - The journal "Vita" will be led by prominent figures in the field, including the former editor-in-chief of "Cell Research," Li Dangsheng, and the president of West Lake University, Shi Yigong [3][6]. Group 3: Academic Publishing Landscape - China has surpassed the United States in the total number of published papers, ranking second in high-level papers globally [6]. - Despite the increase in domestic publications, many researchers still prefer to publish in internationally recognized journals like Nature, Science, and Cell due to the limited number of influential domestic journals [6]. - "Cell Research," founded in 1990, has evolved significantly, achieving an impact factor of over 20 by 2020, making it one of the most influential life sciences journals in Asia [9].