{"title":"A biomarker framework for auditory system aging: the Aging Biomarker Consortium consensus statement.","authors":"Xiaolong Fu, Si Wang, Yunhao Wu, Yu Sun, Wenwen Liu, Xin Xi, Geng-Lin Li, Ke Liu, Wei Yuan, Fangyi Chen, Hongyang Wang, Tao Yang, Yuhe Liu, Jialin Zheng, Haibo Shi, Jing Qu, Xiaowei Chen, Limin Suo, Yideng Huang, Xinbo Xu, Xuxia Tang, Xiaojun Li, Lei Xu, Xia Gao, Lisheng Yu, Yilai Shu, Weiqi Zhang, Jinpeng Sun, Huijun Yuan, Shusheng Gong, Wenyan Li, Xiulan Ma, Dingjun Zha, Jiangang Gao, Huawei Li, Zuhong He, Guang-Hui Liu, Gang Pei, Weijia Kong, Haibo Wang, Renjie Chai","doi":"10.1093/lifemedi/lnaf011","DOIUrl":"https://doi.org/10.1093/lifemedi/lnaf011","url":null,"abstract":"<p><p>Hearing is one of the most vital sensory functions in human beings and a crucial means of perceiving and acquiring information from the natural environment. The advancement of human society is closely linked to the development of language, with hearing serving as the foundation for verbal communication. As individuals age, the deterioration of the auditory system becomes a significant factor contributing to sensory impairments in the elderly. In addition to hearing loss, the aging of the auditory system is also associated with cognitive decline and psychosocial disorders, which severely impact the quality of life for older adults. Currently, there are no effective treatments or interventions available for addressing the aging of the auditory system. Therefore, identifying biomarkers of the auditory system aging is of great significance. The Aging Biomarker Consortium of China has conducted a comprehensive evaluation of aging biomarkers in the auditory system, focusing on three dimensions: morphological, functional, and humoral biomarkers. This initiative aims to establish a foundation for assessing the degree of aging in the auditory system and to promote the management of auditory health in an aging society, ultimately enhancing the auditory health of the elderly population both in China and globally.</p>","PeriodicalId":74073,"journal":{"name":"Life medicine","volume":"4 1","pages":"lnaf011"},"PeriodicalIF":0.0,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11992615/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144036835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Life medicinePub Date : 2025-03-07eCollection Date: 2025-04-01DOI: 10.1093/lifemedi/lnaf012
Xiaoting Xu, Yuping Zhang, Guoxin Huang, Ansu Perekatt, Yan Wang, Lei Chen
{"title":"Advances and applications of gut organoids: modeling intestinal diseases and therapeutic development.","authors":"Xiaoting Xu, Yuping Zhang, Guoxin Huang, Ansu Perekatt, Yan Wang, Lei Chen","doi":"10.1093/lifemedi/lnaf012","DOIUrl":"https://doi.org/10.1093/lifemedi/lnaf012","url":null,"abstract":"<p><p>Gut organoids are 3D cellular structures derived from adult or pluripotent stem cells, capable of closely replicating the physiological properties of the gut. These organoids serve as powerful tools for studying gut development and modeling the pathogenesis of intestinal diseases. This review provides an in-depth exploration of technological advancements and applications of gut organoids, with a focus on their construction methods. Additionally, the potential applications of gut organoids in disease modeling, microenvironmental simulation, and personalized medicine are summarized. This review aims to offer perspectives and directions for understanding the mechanisms of intestinal health and disease as well as for developing innovative therapeutic strategies.</p>","PeriodicalId":74073,"journal":{"name":"Life medicine","volume":"4 2","pages":"lnaf012"},"PeriodicalIF":0.0,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12018802/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144065320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"DDIT3 deficiency ameliorates systemic lupus erythematosus by regulating B cell activation and differentiation.","authors":"Xin Dai, Jiali Yu, Yunfei Zhang, Zhiming Wang, Yunyan Dai, Ying Hu, Xiaocui Wang, Binbin Tian, Minhui Wu, Hao Chen, Ruigao Song, Dan Ma, Cong-Yi Wang, Dawei Ye, Ziliang Zheng, Liyun Zhang, Jing Luo, Yukai Jing","doi":"10.1093/lifemedi/lnaf009","DOIUrl":"10.1093/lifemedi/lnaf009","url":null,"abstract":"<p><p>Systemic lupus erythematosus (SLE) is characterized by the overproduction of autoantibodies, and B cells are considered to be the primary cells involved in the development of SLE. Studies have shown that DNA damage responses play a role in B cell activity in SLE. However, the exact role of DNA damage-induced transcript 3 (DDIT3) in humoral immune response and SLE pathogenesis remains unknown. We observed increased expression of DDIT3 in B cells of SLE patients and this expression was positively correlated with disease activity. In DDIT3-knockout mice, we observed disturbances in B cell development and differentiation, inhibition of B cell activation, and BCR signaling. In addition, DDIT3 deficiency leads to a reduction in T-cell-dependent humoral immune responses. Mechanistically, we found that DDIT3 promotes the transcription and expression of <i>Itgad</i>, which enhances PI3K signaling and B cell activation. Finally, we found that DDIT3 deficiency attenuated lupus autoimmunity and reduced germinal center responses. In conclusion, our study reveals for the first time the role of DDIT3 in adaptive immune responses, especially in B cell homeostasis, B cell activation, BCR signaling, and B cell function. These findings provide a new potential target for therapeutic intervention in SLE.</p>","PeriodicalId":74073,"journal":{"name":"Life medicine","volume":"4 1","pages":"lnaf009"},"PeriodicalIF":0.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11956853/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143756294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Life medicinePub Date : 2025-02-24eCollection Date: 2025-02-01DOI: 10.1093/lifemedi/lnaf008
Qihang Chen, Zihan Liu, Bingjie Chen
{"title":"Many are called but few are chosen-from multiple clonal origins to one winner.","authors":"Qihang Chen, Zihan Liu, Bingjie Chen","doi":"10.1093/lifemedi/lnaf008","DOIUrl":"10.1093/lifemedi/lnaf008","url":null,"abstract":"","PeriodicalId":74073,"journal":{"name":"Life medicine","volume":"4 1","pages":"lnaf008"},"PeriodicalIF":0.0,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11971563/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143797258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Life medicinePub Date : 2025-02-23eCollection Date: 2025-04-01DOI: 10.1093/lifemedi/lnaf005
Mei Wang, Wenqin Xiao, Tangxiele Liu, Yan Zhu, Mengting Chen, Zixin Tan, San Xu, Zhixiang Zhao, Fangfen Liu, Hongfu Xie, Xiang He, Zhili Deng, Ji Li
{"title":"Linoleic acid improves rosacea through repairing mitochondrial damage in keratinocytes.","authors":"Mei Wang, Wenqin Xiao, Tangxiele Liu, Yan Zhu, Mengting Chen, Zixin Tan, San Xu, Zhixiang Zhao, Fangfen Liu, Hongfu Xie, Xiang He, Zhili Deng, Ji Li","doi":"10.1093/lifemedi/lnaf005","DOIUrl":"10.1093/lifemedi/lnaf005","url":null,"abstract":"<p><p>Rosacea, as a progressive and chronic inflammatory skin disease, lacks safe and effective treatment options. Our previous study reported metabolic disturbance in rosacea patients, containing abnormal lipid metabolism. Building on this, we characterized significant alterations in fatty acid metabolism among rosacea patients, with a notable increase in linoleic acid (LNA) levels. We further demonstrated that LNA prevents rosacea-like dermatitis in LL37-induced rosacea-like mouse model. Our evidence indicated that LNA hyperactivates PPARγ signaling in the epidermis, a phenomenon observed in both rosacea patients and mouse model. Inhibiting PPARγ rescued the effect of LNA in LL37-induced mice. Additionally, our <i>in vivo</i> and <i>in vitro</i> evidence strongly supported the presence of mitochondrial damage in the keratinocytes of rosacea. LNA stimulated PPARγ to reduce the reactive oxygen species production, increasing the generation of ATP and recovering mitochondrial membrane potential. Finally, through a prospective cohort study utilizing UK Biobank data and linkage disequilibrium score regression (LDSC) regression analysis, we further confirmed LNA levels are negatively related to the risk of rosacea, highlighting LNA as a promising therapeutic strategy for rosacea treatment.</p>","PeriodicalId":74073,"journal":{"name":"Life medicine","volume":"4 2","pages":"lnaf005"},"PeriodicalIF":0.0,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11971526/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143797267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A framework of biomarkers for skeletal muscle aging: a consensus statement by the Aging Biomarker Consortium.","authors":"Ning Huang, Meiling Ge, Xiaolei Liu, Xu Tian, Pengbin Yin, Zhijun Bao, Feng Cao, Ng Shyh-Chang, Biao Dong, Lunzhi Dai, Zhenji Gan, Ping Hu, Jing Qu, Si Wang, Huating Wang, Qian Xiao, Rui Yue, Jirong Yue, Licheng Zhang, Yong Zhang, Hongbo Zhang, Weiqi Zhang, Guang-Hui Liu, Gang Pei, Yong Liu, Dahai Zhu, Birong Dong","doi":"10.1093/lifemedi/lnaf001","DOIUrl":"10.1093/lifemedi/lnaf001","url":null,"abstract":"<p><p>The skeletal muscle is an important organ for movement and metabolism in human body, and its physiological aging underlies the occurrence of muscle atrophy and sarcopenia. China has the largest aging population in the world and is facing a grand challenge with how to prevent and treat skeletal muscle aging-related diseases. To address this difficult problem, the Aging Biomarker Consortium (ABC) of China has reached an expert consensus on biomarkers of skeletal muscle aging by synthesizing literatures and insights from scientists and clinicians. This consensus attempts to provide a comprehensive assessment of biomarkers associated with skeletal muscle aging, and proposes a systematic framework to classify them into three dimensions: functional, structural, and humoral. Within each dimension, the experts recommend clinically relevant biomarkers for skeletal muscle aging. This consensus aims to lay the foundation for future research on skeletal muscle aging, facilitating precise prediction, diagnosis, and treatment of skeletal muscle aging and sarcopenia. It is anticipated to make significant contributions to healthy aging of skeletal muscle in the elderly population in China and around the world as well.</p>","PeriodicalId":74073,"journal":{"name":"Life medicine","volume":"3 6","pages":"lnaf001"},"PeriodicalIF":0.0,"publicationDate":"2025-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11851484/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143506548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Life medicinePub Date : 2025-01-23eCollection Date: 2025-02-01DOI: 10.1093/lifemedi/lnaf004
Weicheng Tang, Kaichen Wang, Yourong Feng, Kuan-Hao Tsui, Keshav K Singh, Michael B Stout, Shixuan Wang, Meng Wu
{"title":"Exploration of the mechanism and therapy of ovarian aging by targeting cellular senescence.","authors":"Weicheng Tang, Kaichen Wang, Yourong Feng, Kuan-Hao Tsui, Keshav K Singh, Michael B Stout, Shixuan Wang, Meng Wu","doi":"10.1093/lifemedi/lnaf004","DOIUrl":"10.1093/lifemedi/lnaf004","url":null,"abstract":"<p><p>The ovary is a crucial gonadal organ that supports female reproductive and endocrine functions. Ovarian aging can result in decreased fertility and dysfunction across multiple organs. Research has demonstrated that cellular senescence in various cell types within the ovary can trigger a decline in ovarian function through distinct stress responses, resulting in ovarian aging. This review explores how cellular senescence may contribute to ovarian aging and reproductive failure. Additionally, we discuss the factors that cause ovarian cellular senescence, including the accumulation of advanced glycation end products, oxidative stress, mitochondrial dysfunction, DNA damage, telomere shortening, and exposure to chemotherapy. Furthermore, we discuss senescence in six distinct cell types, including oocytes, granulosa cells, ovarian theca cells, immune cells, ovarian surface epithelium, and ovarian endothelial cells, inside the ovary and explore their contribution to the accelerated ovarian aging. Lastly, we describe potential senotherapeutics for the treatment of ovarian aging and offer novel strategies for ovarian longevity.</p>","PeriodicalId":74073,"journal":{"name":"Life medicine","volume":"4 1","pages":"lnaf004"},"PeriodicalIF":0.0,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11916902/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143664884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Unraveling the metabolic heterogeneity and commonality in senescent cells using systems modeling.","authors":"Gong-Hua Li, Yu-Hong Li, Qin Yu, Qing-Qing Zhou, Run-Feng Zhang, Chong-Jun Weng, Ming-Xia Ge, Qing-Peng Kong","doi":"10.1093/lifemedi/lnaf003","DOIUrl":"https://doi.org/10.1093/lifemedi/lnaf003","url":null,"abstract":"<p><p>Cellular senescence is a key contributor to aging and aging-related diseases, but its metabolic profiles are not well understood. Here, we performed a systematic analysis of the metabolic features of four types of cellular senescence (replication, irradiation, reactive oxygen species [ROS], and oncogene) in 12 cell lines using genome-wide metabolic modeling and meta-analysis. We discovered that replicative and ROS-induced senescence share a common metabolic signature, marked by decreased lipid metabolism and downregulated mevalonate pathway, while irradiation and oncogene-induced senescence exhibit more heterogeneity and divergence. Our genome-wide knockout simulations showed that enhancing the mevalonate pathway, by administrating mevalonate for instance, could reverse the metabolic alterations associated with senescence and human tissue aging, suggesting a potential anti-aging or lifespan-extending effect. Indeed, the experiment in <i>Caenorhabditis elegans</i> showed that administrating mevalonate significantly increased the lifespan. Our study provides a new insight into the metabolic landscape of cell senescence and identifies potential targets for anti-aging interventions.</p>","PeriodicalId":74073,"journal":{"name":"Life medicine","volume":"4 2","pages":"lnaf003"},"PeriodicalIF":0.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11992571/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144055047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Life medicinePub Date : 2025-01-18eCollection Date: 2025-02-01DOI: 10.1093/lifemedi/lnaf002
Qi Lei, Hongkui Deng, Shicheng Sun
{"title":"Pluripotent stem cell-based immunotherapy: advances in translational research, cell differentiation, and gene modifications.","authors":"Qi Lei, Hongkui Deng, Shicheng Sun","doi":"10.1093/lifemedi/lnaf002","DOIUrl":"10.1093/lifemedi/lnaf002","url":null,"abstract":"<p><p>Cell-based immunotherapy, recognized as living drugs, is revolutionizing clinical treatment to advanced cancer and shaping the landscape of biomedical research for complex diseases. The differentiation of human pluripotent stem cells (PSCs) emerges as a novel platform with the potential to generate an unlimited supply of therapeutic immune cells, especially when coupled with gene modification techniques. PSC-based immunotherapy is expected to meet the vast clinical demand for living drugs. Here, we examine recent preclinical and clinical advances in PSC-based immunotherapy, focusing on PSC gene modification strategies and differentiation methods for producing therapeutic immune cells. We also discuss opportunities in this field and challenges in cell quality and safety and stresses the need for further research and transparency to unlock the full potential of PSC immunotherapies.</p>","PeriodicalId":74073,"journal":{"name":"Life medicine","volume":"4 1","pages":"lnaf002"},"PeriodicalIF":0.0,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11916900/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143665473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}