撰文丨王聪 编辑丨王多鱼 排版丨水成文 内质网 （ER） 容纳了多种对细胞稳态和健康衰老至关重要的细胞过程，包括蛋白质质量控制、脂质生物合成、自噬启动、碳水化合物代谢和钙信号转导。内质 网还通过一系列可塑的细胞器间接触位点协调细胞内信号转导和其他多种膜结合细胞器的形态动力学。通过将多种营养感知途径与其促进分泌的作用相结合，内 质网的状态也是多细胞生物健康细胞间信号转导的关键决定因素。 内质网在细胞和生物体生理学中的这种核心地位，凸显了该细胞器在健康衰老与病理性衰老轨迹中的关键驱动作用。 2026 年 2 月 2 日， 范德堡大学医学院的研究人员在 Nature 子刊 Nature Aging 上发表了题为： ER remodelling is a feature of ageing and depends on ER- phagy 的研究论文。 该研究表明， 内质网重塑 （ ER remodelling ） 是 衰老 的一个显著特征，并且其依赖于 内质网自噬 （ ER-phagy ） 。 内质网 （ER） 由一系列亚区组成，每个亚区都具有独特的结构和功能。尽管内质网过程的改变与年龄相关发病机制有关，但尚不清楚 ...

编辑丨王多鱼 排版丨水成文 核膜 （nuclear envelope，NE） 是一种高度动态的选择性屏障，在维持核质分隔的同时，参与调控核质转 运、基因组稳定性、基因表达等关键生命过程。然而，随着机体衰老，这层细胞核的"城墙"的形态与功能 会发生严重的破坏，并与早衰综合征、代谢紊乱、肿瘤及神经退行性疾病等多种人类疾病密切相关。然 而，如何保护衰老过程中细胞核"城墙"的完整与健康，长期以来未被阐明。 2026 年 2 月 3 日，中国科学院遗传与发育生物学研究所 田烨 研究员团队在 Nature Metabolism 期刊发 表了题为： Mitochondrial Superoxide Regulates Nuclear Envelope Integrity and Aging via Redox- Mediated Lipid Metabolism 的研究论文。 该揭示了 发育阶段 的 线粒体超氧阴离子 并非破坏性的"坏分子"，而是作为一种关键的" 保护性信号 "， 通过重编程脂质代谢通路，保护核膜完整性并延缓衰老 。该研究还提出， 靶向抑制脂质过氧化这一策略具 有治疗早衰症及改善机体衰老的转化潜力 。值得一 ...

Core Insights - The recent conference in Guangzhou revealed significant findings regarding aging and its biological connections to chronic diseases, emphasizing the potential for targeted interventions in aging processes [1][3]. Group 1: Research Findings - Professor Deng Haiteng from Tsinghua University reported a breakthrough in proteomics, identifying a significant increase in the "immunoglobulin profile" in multiple organs of aging mice, indicating immune system dysregulation as a core biological feature of aging [1][3]. - The research discovered plasma protein biomarkers that can predict biological age and key intervention targets, providing new evidence for proactive health intervention strategies aimed at aging [3][6]. Group 2: Implications for Health Interventions - The findings suggest that aging itself can be a target for intervention rather than a passive outcome, offering a new scientific approach to prevent chronic diseases through anti-aging strategies [3][6]. - Researcher Huo Junsheng highlighted the shift in understanding aging from a vague concept of "damage accumulation" to precise "identification dimensions," with over ten aging markers identified, including telomere shortening and mitochondrial dysfunction, which provide clear targets for product development [6][8].

Core Viewpoint - The article discusses a groundbreaking study on protein restriction (PR) and its potential anti-aging effects, highlighting the importance of dietary interventions in extending lifespan and improving health [1][2][12]. Group 1: Research Findings - The study systematically mapped the proteomic landscape of aging across 41 organs/tissues in male mice, revealing significant protein expression heterogeneity during aging [4]. - Protein restriction was found to significantly alleviate age-related protein expression abnormalities in various tissues [6]. - The research indicated that protein restriction reduces age-related DNA methylation accumulation and reverses abnormal protein phosphorylation patterns in aging tissues [6]. Group 2: Health Implications - The study confirmed that protein restriction has cross-species cardiovascular protective effects, supported by analyses of plasma samples from both mice and humans [7]. - It was noted that lower protein intake is associated with enhanced cardiovascular health and reduced inflammation risk in humans [11]. Group 3: Timing and Gender Differences - The effects of protein restriction vary by gender and timing, with middle age identified as the optimal period for dietary intervention [8][11].

Core Insights - The article discusses the profound impact of the exposome on health, particularly how aging and cancer are interconnected through a protective program called senescence-coupled differentiation [3][6] - A recent study from Tokyo University published in Nature Cell Biology reveals that melanocyte stem cells (McSC) can either age and lead to hair greying or bypass this process and develop melanoma, depending on the type of genetic damage they experience [3][6] Group 1: Research Findings - The study identifies a protective mechanism where McSC undergo senescence-coupled differentiation in response to DNA double-strand breaks, leading to selective depletion of these stem cells and resulting in hair greying while preventing melanoma formation [6] - Conversely, carcinogens can inhibit this protective differentiation by activating arachidonic acid metabolism and KIT ligand from the microenvironment, promoting self-renewal of McSC and leading to melanoma [6] Group 2: Mechanisms of Action - The fate of individual stem cell clones—whether to amplify or deplete—is regulated through interactions with their microenvironment, which collectively influences the manifestation of aging phenotypes in a cumulative and antagonistic manner [7]

Core Insights - The gut microbiome is a significant predictor of health, influencing metabolism, weight, brain health, and aging [3][4] - Dysbiosis, or an imbalance in gut microbes, is linked to various chronic diseases, including obesity, cardiovascular disease, and neurodegenerative disorders [22][30] Group 1: Microbiome and Health - The gut microbiome consists of over 30 trillion microbes, comparable in number to human cells, and plays a crucial role in digestion and nutrient absorption [5][10] - Changes in the microbiome can occur rapidly in response to diet, antibiotics, and environmental factors, affecting overall health and resilience [8][13] - Dysbiosis can lead to increased intestinal permeability, systemic inflammation, and is associated with conditions like metabolic syndrome and autoimmune diseases [22][23][24] Group 2: Chronic Diseases Linked to Dysbiosis - Cardiovascular disease is linked to dysbiosis through microbial metabolites such as trimethylamine N-oxide (TMAO), which is associated with higher risks of heart attack and stroke [25][31] - Neurodegenerative diseases like Alzheimer's and Parkinson's show microbial shifts that may precede clinical symptoms, suggesting potential for early intervention [28][51] - Mental health issues, including major depressive disorder, have been correlated with reduced levels of beneficial gut bacteria [27][32] Group 3: Dietary Influence on the Microbiome - A diverse, plant-based diet rich in fiber, resistant starches, and polyphenols is essential for maintaining a healthy microbiome [35][39][54] - Fermented foods can enhance microbial diversity and reduce inflammation, supporting overall gut health [38][54] - Long-term dietary changes are necessary to achieve lasting improvements in microbiome composition, as short-term diets often revert to baseline [42][44] Group 4: Future of Microbiome Research and Therapies - Precision probiotics and live biotherapeutic products (LBPs) are being explored as potential treatments for metabolic and neurological disorders [46][49] - Emerging diagnostics, such as stool sequencing and capsule-based sampling, may allow for personalized microbiome-targeted therapies [51][52] - The integration of diet, lifestyle, and microbial therapeutics is anticipated to be the future approach for optimizing gut health and overall well-being [52][53]

Core Viewpoint - Aging is a major risk factor for various neurodegenerative diseases, including Alzheimer's disease, and is associated with the accumulation of senescent cells that propagate the aging process through paracrine signaling [2] Group 1: Research Findings - The research published in Nature Aging demonstrates that border-associated macrophages (BAM) regulate cognitive aging by inducing paracrine senescence in microglia through migrasome-mediated mechanisms [4][8] - In the early stages of brain aging, BAM acquire senescence-related characteristics, potentially due to prolonged exposure to beta-amyloid (Aβ) [7] - Senescent-like BAM exhibit increased production of migrasomes, which transmit aging-related signals to neighboring cells, particularly microglia, inhibiting their apoptosis and promoting senescence induction [8] Group 2: Intervention Strategies - The research team developed intervention strategies targeting migrasome production by delivering siRNA to block Tspan4, which can improve cognitive deficits in aged mice [8] - These findings suggest that migrasomes are powerful carriers of aging regulatory signals and represent a promising target for Senomorphic therapies, which aim to inhibit the senescence-associated secretory phenotype without affecting cell death [8]

Core Viewpoint - The study reveals that the decline in leptin levels with age contributes to the accumulation of senescent CD8+ T cells in the tumor microenvironment, leading to weakened anti-tumor effects. Regulating leptin levels may be a promising therapeutic strategy for elderly cancer patients [3][7][10]. Group 1: Aging and T Cell Dysfunction - Aging is a major risk factor for various cancers, with patients aged 65 and above accounting for 60% of new cancer diagnoses [5]. - T cell immune remodeling due to aging results in poor clinical outcomes for cancer patients, as T cells lose physiological functions over time [5]. - Age-related changes in T cells and the impact of systemic metabolic alterations on T cell function and phenotype require further investigation [5]. Group 2: Role of Leptin - Leptin, produced by adipose tissue, informs the brain about the body's fat storage levels, with higher fat leading to increased leptin production [6]. - The study found that decreased leptin levels with age accelerate CD8+ T cell senescence, impairing T cell function in the tumor microenvironment [7][8]. - In human cancer patients, plasma leptin levels are negatively correlated with the degree of CD8+ T cell senescence within tumors [7][8]. Group 3: Implications for Treatment - The findings suggest that enhancing plasma leptin levels through the regulation of adipocyte metabolism may help prevent T cell senescence and improve anti-tumor immunity in elderly patients [10]. - Supplementing leptin could have therapeutic potential for elderly cancer patients [10].

Core Viewpoint - Taurine deficiency is identified as a potential driver of aging, with supplementation showing promise in extending healthspan and lifespan in various model organisms [3][7]. Group 1: Research Findings on Taurine - A study published in Science on June 9, 2023, suggests that taurine deficiency contributes to aging, and its supplementation can slow aging in model organisms, extending the healthspan of middle-aged mice by 12% [3][7]. - Subsequent studies in top journals like Cell and Nature have revealed taurine's new functions, including enhancing cancer treatment efficacy and anti-obesity effects [3]. - However, a study published in Nature on May 14, 2025, indicates that taurine in the tumor microenvironment may promote leukemia cell growth, suggesting a complex role of taurine in cancer [4]. Group 2: Critiques and Counterarguments - A study published in Science on June 5, 2025, questions taurine as an aging biomarker, showing no significant correlation between taurine levels and aging [5]. - Research published in Aging Cell on August 11, 2025, assessed 137 adults aged 20-93 and found no relationship between serum taurine levels and age, muscle mass, strength, or physical function [8][10]. - The findings indicate that taurine deficiency is unlikely to be a primary driver of human aging, challenging previous assumptions about its role [12].

Group 1 - The core idea of the article revolves around the identification of environmental factors that accelerate biological aging, which increases the risk of chronic diseases such as heart disease, cancer, and diabetes [1][2]. - A large-scale study conducted by Stanford University scientists analyzed thousands of middle-aged individuals to uncover unexpected factors contributing to accelerated aging [2][3]. Group 2 - The study utilized two main research tools: Exposome and epigenetic clocks to systematically investigate the relationship between environmental chemicals and aging [4][5][7][8]. - The Exposome encompasses all environmental factors a person is exposed to throughout their life, influencing gene activity and aging speed [5][6]. Group 3 - The research identified three major accelerators of aging: smoking, cadmium, and lead [13]. - Higher levels of cotinine, a metabolite of nicotine, were linked to increased biological aging, with a standard deviation increase in cotinine leading to a 1.40-year acceleration in the GrimAge clock [15][16][17]. Group 4 - Cadmium was found to be the most significant biological aging accelerator, with a standard deviation increase in serum cadmium resulting in a 1.23-year increase in GrimAge and a 0.02 unit increase in DunedinPoAm [19][20][21]. - Lead exposure was also significantly associated with accelerated aging, with a standard deviation increase in blood lead levels correlating to a 0.73-year increase in GrimAge [28][30]. Group 5 - Interestingly, exposure to certain toxic chemicals like dioxins and PCBs was associated with a decrease in epigenetic age, suggesting a complex relationship between toxicity and biological aging [33][34]. - The study proposed a "debt potential" hypothesis, where exposure to these toxins may lead to the production of younger immune cells as a compensatory mechanism [36][37]. Group 6 - Positive factors influencing slower aging included beneficial dietary components and higher socioeconomic status, which were linked to better health outcomes and slower biological aging [40][41][42]. - The research emphasized that individuals can actively manage their "exposome" to slow down aging, highlighting the importance of lifestyle choices such as quitting smoking and maintaining a diverse diet [45][48].