表观遗传学
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生命的意义在哪?基因不是全部答案
Guan Cha Zhe Wang· 2025-11-16 09:28
Core Insights - The conversation highlights the evolving understanding of biology, particularly the role of genes and DNA, challenging traditional views that consider them as the sole controllers of life [4][9][10] Group 1: Understanding of Genes and DNA - The author Philip Ball argues that genes and DNA should be viewed as "molecular resources" that cells utilize based on their environment rather than as strict instructions governing all biological processes [9][10] - The historical perspective of genes as a "code" directing all biological functions is deemed outdated, with a shift towards understanding the complex interactions within cells [8][9] - The concept of "selfish genes" is critiqued, suggesting that it oversimplifies the intricate regulatory mechanisms at play in biological systems [12][19] Group 2: Medical Implications - Ball emphasizes the need for a more holistic approach to medicine, moving beyond genetic-level interventions for diseases that may not primarily stem from genetic issues [10][11] - The discussion points out that many common diseases are influenced by higher-level biological processes rather than solely by genetic factors [10][11] - The author suggests that current medical practices often resemble trial-and-error methods rather than being based on a deep understanding of biological mechanisms [11][12] Group 3: Complexity of Biological Systems - The conversation addresses the complexity of cellular environments, likening them to crowded nightclubs rather than orderly factories, highlighting the chaotic interactions among molecules [27][29] - The role of biomolecular condensates in cellular processes is introduced, emphasizing the importance of understanding these structures for effective medical interventions [24][26] - The need for advanced imaging techniques, such as cryo-electron microscopy, is discussed as a means to better visualize and understand cellular dynamics [27][29] Group 4: Emergence and Agency in Biology - The concept of "agency" in biological systems is explored, suggesting that organisms, including cells, exhibit decision-making capabilities that go beyond mere genetic programming [30][32] - Ball argues that understanding the agency of living organisms is crucial for comprehending the essence of life, distinguishing it from non-living entities [32][34] - The discussion touches on the philosophical implications of human decision-making and its divergence from evolutionary imperatives, indicating a complex interplay between instinct and conscious choice [34][36] Group 5: Future Directions in Biological Research - The potential of AI in biological research is acknowledged, particularly in predicting gene regulation and understanding complex biological phenomena [21][23] - However, concerns are raised about the limitations of AI in providing mechanistic explanations for biological processes, emphasizing the need for a deeper understanding of underlying mechanisms [23][24] - The conversation concludes with a call for better narratives in biology that reflect its complexity and the agency of living systems, moving away from simplistic explanations [49][50]
对话倪喜军:郧县人复原得对不对,我们一开始就想到老外会这样问
Guan Cha Zhe Wang· 2025-11-06 06:14
Core Insights - The research led by Ni Xijun reconstructs the skull fossil of "Yunxian Man 2" and establishes a new evolutionary tree for the genus Homo, shedding light on the origins of the Dragon Man and Denisovans [1][8]. Group 1: Relationship with Modern Humans - The Yunxian Man is closely related to modern humans, sharing a common ancestor approximately 1 million years ago [2][3]. - The Dragon Man branch is more closely related to modern humans than the Neanderthal branch, which was previously thought to be a sister group to Homo sapiens [3][8]. Group 2: Classification of Denisovans - Denisovans are classified as part of the Dragon Man branch, although they are often considered an independent group due to limited fossil evidence [4][5]. - The classification of Denisovans remains debated, as they lack a formally recognized species name and are primarily identified through DNA fragments [4][5]. Group 3: Methodology and Technological Advances - The study introduces a novel approach to fossil reconstruction, focusing on assessing the potential inaccuracies in the reconstruction process rather than solely on precision [9][13]. - A statistical method was employed to analyze the stability of the evolutionary tree despite potential errors in the reconstruction, demonstrating a significant technical breakthrough [13][14]. Group 4: Fossil Significance - The age of the Yunxian Man fossil, estimated at 1 million years, is crucial for understanding the divergence of Homo sapiens from other branches [8][9]. - The research emphasizes the rarity of well-preserved fossils from this time period, making the Yunxian Man a unique specimen for evolutionary studies [8][9]. Group 5: Future Research Directions - The research team is open to further analysis and validation of their findings by other researchers using their publicly available database [32][34]. - There is potential for applying the new methodologies to other species, although challenges remain in reconstructing fossils that lack extensive data [30][31].
诺禾致源20251023
2025-10-23 15:20
Summary of the Conference Call for 诺禾致源 (Nuohe Zhiyuan) Company Overview - **Company**: 诺禾致源 (Nuohe Zhiyuan) - **Period**: January to September 2025 Key Financial Metrics - **Total Revenue**: 15.81 billion CNY, up 4.05% year-on-year [2][3] - **Q3 Revenue**: 5.41 billion CNY, up 3.47% year-on-year [3] - **Overseas Revenue**: 7.92 billion CNY, up 4.1% year-on-year, accounting for 50.09% of total revenue [2][3] - **Q3 Overseas Revenue**: 2.58 billion CNY, down 0.48% year-on-year [3] - **Domestic Revenue**: 7.89 billion CNY, up 4% year-on-year [2] - **Q3 Domestic Revenue**: 2.82 billion CNY, up 7.37% year-on-year, and up 8.61% quarter-on-quarter [5] - **Gross Margin**: 41.9%, down 0.7 percentage points year-on-year [10] - **Net Profit**: 1.16 billion CNY, down 10.17% year-on-year, with a net profit margin of 7.31% [11] - **R&D Investment**: 56.1 million CNY in Q3, focusing on emerging fields [12] Revenue Breakdown by Market - **Americas**: Q3 revenue down 12% due to changes in research funding and policy impacts [4] - **EMEA**: Q3 revenue down 12%, affected by project completion and funding transitions [4] - **Europe**: Q3 revenue up 19%, indicating strong performance [4] - **Customer Segmentation**: 70% of revenue from universities and research institutions, 30% from hospitals and enterprises [6] Product and Service Performance - **Life Sciences Research Services**: Revenue of 5.52 billion CNY, up 6.21% year-on-year [7] - **Monitoring and Sequencing Platform Services**: Revenue of 7.7 billion CNY, up 3.23% year-on-year, but Q3 revenue down 3.42% [7] - **Emerging Business Contributions**: Approximately 32% of total revenue, up 4 percentage points year-on-year, with a growth of about 20% [8] R&D and Innovation - **R&D Focus Areas**: Single-cell genomics, spatial genomics, proteomics, metabolomics, epigenetics, and long-read sequencing [12][18] - **AI Integration**: Progress in AI applications, particularly in omics data analysis and virtual cell modeling [20][28] Market Challenges and Strategies - **Domestic Market Competition**: Increased competition leading to a 30% price drop; company aims to reduce competition through mergers and acquisitions [16][23] - **Geopolitical Impact**: U.S. market affected by geopolitical tensions, but the company maintains strong relationships in key regions [21] - **Cash Flow Management**: Operating cash flow was negative 87 million CNY for the first nine months, but turned positive in Q3 at 77 million CNY [14] Future Outlook - **Expansion Plans**: Continued investment in overseas markets, including new laboratories in Singapore and Europe [30] - **Focus on NGS and AI**: Anticipated growth in NGS applications and AI integration to enhance research capabilities [24][28] Additional Insights - **Customer Base Growth**: Stable customer structure with a slight increase in contributions from universities and research institutions [6] - **Cash Flow Volatility**: Short-term fluctuations in cash flow due to proactive risk management strategies [14] - **Regulatory Environment**: Ongoing adjustments to align with changing policies in the domestic and international markets [26][27]
运动还能遗传?南京大学张辰宇/陈熹等揭开运动能力的遗传密码:父亲爱运动,竟能促进孩子的耐力和代谢健康
生物世界· 2025-10-07 04:30
Core Insights - The article discusses the emerging evidence that parental lifestyle, particularly exercise habits, can influence the health characteristics of their offspring in a non-DNA manner, suggesting that the benefits of exercise may be "written" into the life scripts of future generations [2][9]. Research Findings - A study published in Cell Metabolism reveals that sperm microRNAs can serve as carriers of epigenetic information, transmitting "exercise capacity and metabolic health" from exercising fathers to their offspring, providing direct molecular evidence for the hypothesis that "exercise can be inherited" [3][11]. - The research team established a long-term endurance exercise model in mice, showing that exercise significantly reshaped the expression profile of sperm microRNAs, with several related to mitochondrial metabolism, muscle development, and energy utilization being significantly upregulated [6][11]. - Offspring of exercising male mice exhibited enhanced endurance and metabolic health in adulthood, with increased skeletal muscle mitochondrial activity and a higher proportion of oxidative muscle fibers, indicating that paternal exercise initiates a "reprogramming" of gene expression networks in the offspring at fertilization [6][11]. Mechanistic Insights - To validate the causal role of this "RNA inheritance" mechanism, the research team injected sperm microRNAs from exercising and non-exercising male mice into normal fertilized eggs, demonstrating that only the offspring from the exercising group exhibited enhanced endurance and metabolic traits without altering DNA sequences [7][11]. - The study identifies that exercise training and overexpression of muscle PGC-1α reshape sperm microRNAs, which directly inhibit the function of the nuclear receptor co-repressor 1 (NCoR1) during early embryonic development, promoting mitochondrial biogenesis and oxidative metabolism [7][11]. Implications - The findings establish a causal relationship between paternal exercise, sperm microRNAs, and embryonic NCoR1 in the transgenerational transmission of exercise-induced phenotypes and metabolic adaptations, expanding the understanding of how lifestyle influences future generations [11][12]. - This research not only provides molecular evidence for how lifestyle can affect the next generation but also opens new avenues for developing intergenerational health promotion strategies based on exercise-induced epigenetic reprogramming [11][12].
研判2025!中国表观遗传学行业发展历程、产业链及市场规模分析:中国表观遗传学行业跃居生命科学前沿,彰显技术突破与需求爆发的双重动能[图]
Chan Ye Xin Xi Wang· 2025-10-06 01:18
Core Insights - The Chinese epigenetics industry has made significant progress in recent years, becoming a research hotspot in the life sciences field, with a market size projected to reach approximately 4.396 billion yuan in 2024, reflecting a year-on-year growth of 62.27% [1][8][10] - The growth is driven by advancements in technologies such as high-throughput sequencing and single-cell sequencing, leading to broader applications in disease diagnosis, treatment, basic research, and crop breeding [1][8][10] Industry Overview - Epigenetics studies heritable changes in gene expression that do not involve changes to the underlying DNA sequence, focusing on the regulation of genes at the transcriptional level [2][4] - Key epigenetic modifications include DNA methylation, histone modification, chromatin remodeling, and RNA modifications [2][4] Industry Development History - The exploration phase of epigenetics in China occurred from the 1940s to 1970s, with significant setbacks due to political influences [4][5] - The initial development phase from the 1980s to 1990s saw the introduction of international genetic theories and the beginning of research into DNA methylation and histone modifications [5][6] - From 2000 to 2010, rapid development occurred, with China participating in the Human Epigenome Project and launching significant research initiatives [6][8] - Since 2010, the industry has matured, with increased international collaboration and applications in disease mechanisms, agriculture, and environmental adaptation [6][8] Industry Value Chain - The upstream of the epigenetics industry includes raw materials such as biological reagents and nucleic acid extraction kits, as well as scientific equipment like high-throughput sequencers and bioinformatics software [7] - The midstream focuses on research and development, while the downstream applications span medical fields (e.g., cancer early screening and precision treatment) and agriculture [7] Market Size - The Chinese epigenetics market is expected to reach approximately 4.396 billion yuan in 2024, with a year-on-year growth of 62.27%, driven by technological advancements and increasing market demand [1][8][10] Industry Trends - Technological innovation and multi-omics integration are driving advancements in precision medicine, with AI and single-cell sequencing enhancing early cancer screening capabilities [12][13] - Applications of epigenetics are expanding into agriculture, environmental science, and health management, demonstrating versatility across various fields [13] - Policy support and market expansion are fostering a comprehensive innovation ecosystem, with increased gene testing coverage and collaboration in international research initiatives [14]
世卫组织建议孕妇仍可服用泰诺,多种假说试图揭开自闭症发病率上升之谜
Di Yi Cai Jing· 2025-09-25 09:15
Core Viewpoint - The increase in autism diagnoses in the U.S. has raised public concern, but there is currently no conclusive scientific evidence linking the use of acetaminophen (Tylenol) during pregnancy to autism [1][2] Group 1: Autism Diagnosis and Prevalence - The U.S. government reported that in 2022, the diagnosis rate of autism among 8-year-old children reached a historic high, with 1 in 31 children diagnosed [1] - The global prevalence of autism among children is estimated at 1%, up from approximately 0.6% a decade ago [2] - The average age for autism diagnosis globally is 5 years, while in the U.S., it remains close to 4 years [3] Group 2: Causes and Risk Factors - The etiology of autism is not fully understood, but it is believed that neurodevelopmental characteristics may form during fetal brain development [3][4] - Genetic factors account for approximately 80% of the risk for autism, with increasing research focusing on the interaction between genetic and environmental factors [4] - Potential risk factors for autism include low birth weight, neonatal jaundice, complications during pregnancy or delivery, and parental health conditions such as obesity and diabetes [4] Group 3: Treatment and Research - Currently, there are no effective therapies to reverse autism, and treatment remains challenging [5][6] - The FDA recently approved a therapy involving calcium folinate (folic acid) for improving autism symptoms, but research on its efficacy is still in early stages [6] - Advances in understanding the neuroanatomy of autism are limited, making treatment development more difficult compared to other neurodevelopmental disorders like depression [7]
基因、环境与运气:生物学的未来在哪里?
Di Yi Cai Jing· 2025-08-16 04:50
Core Concept - The article discusses the concept of the "triple helix" proposed by R.C. Lewontin, emphasizing the interaction and influence among genes, organisms, and the environment [1][8]. Group 1: Genetic Determinism Debate - Lewontin criticizes genetic determinism, arguing that the human genome differs by less than 0.1%, yet it is misused to explain social inequalities such as wealth, intelligence, and crime [5][6]. - He asserts that the environment is not merely a container but is actively shaped by organisms, which select and modify their surroundings [5][8]. - The completion of the Human Genome Project, according to Lewontin, will not achieve its intended purpose of identifying disease-causing genes through DNA comparison [5][6]. Group 2: Responses from Richard Dawkins - Richard Dawkins responds to Lewontin's critiques, clarifying that he never claimed genes determine everything, but rather that genetic differences can explain phenotypic variations [6]. - Dawkins emphasizes the directionality of evolution, countering Lewontin's and Gould's views on randomness in evolution by citing examples like the speed of cheetahs [6]. - He argues that moral responsibility should not be outsourced to science, maintaining a distinction between scientific conclusions and their political implications [6]. Group 3: Impact on Biological Sciences - The debate between Lewontin and Dawkins has had a lasting impact on the field of biology, with new perspectives emerging, such as those presented by behavior geneticist Kathryn Harden in her book "The Gene Lottery" [7]. - Harden attempts to find a middle ground, acknowledging the significant role of genes while also recognizing the influence of luck and the potential for social policies to mitigate genetic impacts [7]. - However, Lewontin remains critical of this middle ground, insisting that the interactions among genes, environment, and randomness are too complex to disentangle [7][8]. Group 4: Science as a Social Institution - Lewontin argues that science is not an isolated pursuit of truth but a social institution influenced by political and economic factors [10][11]. - The direction of scientific research is often driven by societal needs and interests, rather than purely by the quest for knowledge [10][12]. - Cultural and ideological contexts shape scientific inquiry, affecting research focus and methodologies across different societies [11][12]. Group 5: Historical Context and Future Implications - Historical examples illustrate the close relationship between biology and political ideologies, such as the use of Darwinian theory in imperialism and eugenics [12]. - The ongoing developments in biological sciences, particularly in the context of the COVID-19 pandemic, raise questions about the political implications of scientific advancements [12].
拜尔斯道夫的当务之急,在于“大胆地卷”
FBeauty未来迹· 2025-08-07 13:42
Core Viewpoint - The global beauty industry is facing growth bottlenecks, and Beiersdorf is not immune to this trend, as indicated by its recent financial report for the first half of 2025, which reveals performance slowdowns, profit pressures, and brand performance disparities [2][4]. Financial Performance - Beiersdorf reported revenue of €5.188 billion (approximately ¥434.45 billion), a year-on-year increase of 0.2% (organic growth of 2.1%), which is a significant slowdown compared to last year's 4.3% (organic growth of 7.1%) [8]. - The consumer goods segment, which accounts for over 80% of total revenue, generated €4.33 billion (approximately ¥362.6 billion), remaining flat year-on-year (organic growth of 1.9%) [8]. Brand Performance - The Derma brand continues to act as a "growth engine," with strong performances from Eucerin and Aquaphor driving a growth of 10.5% (organic growth of 12.2%) [10]. - Conversely, the luxury skincare brand La Prairie saw a decline of 10.8% (organic decline of 10.7%), despite achieving 3% growth in China during Q2, reflecting the broader trend of low demand in the global high-end market [10]. - Nivea, the largest brand in the consumer segment, experienced a decline of 1.2% (organic growth of 1.0%), indicating a critical period of brand adjustment [10]. Strategic Adjustments - Beiersdorf has lowered its full-year guidance for 2025, adjusting the organic sales growth target from 4-6% to approximately 3%, and the EBIT margin expectation from a 50 basis point increase to a 20 basis point increase [12]. - The company is focusing on innovation to drive growth, with plans for a significant new product launch from Nivea, the "Epigenetic Essence," set to launch in September across 30 countries [19][20]. Market Dynamics in China - In China, Beiersdorf has shown significant structural adjustments and channel breakthroughs, with La Prairie achieving 3% organic growth, primarily driven by a 36% surge in e-commerce sales [15][26]. - Nivea is undergoing structural adjustments, particularly in lower-tier cities, where it is shifting from low-margin products to higher-end offerings, aiming to better align with consumer preferences [17]. - The upcoming launch of Nivea's epigenetic essence is expected to be the largest product launch in the company's history, with a price point 40-50% lower than Eucerin, aiming to capture a larger consumer base [19][20]. Future Outlook - Beiersdorf's growth in China will depend on its ability to penetrate core segments and compete effectively against rivals in terms of efficiency and content [22]. - The company is strategically focusing on the skincare segment, reducing low-margin SKUs, and introducing innovative products to attract a broader consumer base [22][24]. - The successful performance of Eucerin and the recovery of La Prairie in the e-commerce space are seen as positive indicators for future growth [20][26].
生命科学领域新增3个全国重点实验室,5790万仪器需求曝光
仪器信息网· 2025-07-29 03:22
Core Viewpoint - The Chinese Academy of Sciences' Institute of Biophysics plans to invest a total of 83.01 million yuan in the construction of three national key laboratories focusing on epigenetic regulation, biomolecules, and cognitive science and mental health [2][10]. Group 1: Epigenetic Regulation and Intervention National Key Laboratory - The Epigenetic Regulation and Intervention National Key Laboratory was approved on January 18, 2023, and aims to address major scientific issues in epigenetics, particularly related to significant diseases and aging [3]. - The laboratory's mission includes gathering influential talent to lead the international forefront of epigenetics and fill gaps in the national innovation system [3]. - Key research directions include chromatin structure and epigenetic regulation mechanisms, phylogenetic and homeostatic epigenetic mechanisms, and chromatin regulation related to aging and disease [6]. Group 2: Biomolecule National Key Laboratory - The Biomolecule National Key Laboratory, established in 1989, has consistently received excellent evaluations and focuses on proposing new questions and discovering new phenomena in life sciences [7]. - The laboratory aims to break through key technological bottlenecks and establish a complete research chain for drug target identification and vaccine design [7]. - Research will focus on supramolecular assembly rules, structure-based biomolecule simulation and design, and elucidating the dynamics of the endomembrane system [7]. Group 3: Cognitive Science and Mental Health National Key Laboratory - The Cognitive Science and Mental Health National Key Laboratory was restructured from the former National Key Laboratory of Brain and Cognitive Science and aims to explore cognitive neuroscience mechanisms related to mental health [9]. - The laboratory will focus on understanding the emergence of consciousness and its assessment, as well as precise adjustments for mental health [12]. - Key research directions include mechanisms of consciousness emergence, assessment of abnormal states of consciousness, and precise mental health adjustments [12].
MD安德森癌症中心张冰洁课题组招聘博士后
生物世界· 2025-07-02 08:03
Core Viewpoint - MD Anderson Cancer Center is recruiting postdoctoral researchers to advance cutting-edge single-cell multi-omics technologies and explore molecular regulatory networks in cancer development and drug resistance [3][8]. Group 1: Research Focus - The laboratory aims to develop single-cell multi-omics technologies, investigate the epigenetic regulatory mechanisms of cancer cell plasticity, and understand the epigenetic basis of individualized drug responses [3]. - The research group is led by Dr. Zhang Bingjie, who has a strong background in epigenomics and single-cell multi-omics [2]. Group 2: Institutional Overview - MD Anderson Cancer Center is a leading cancer treatment and research institution, consistently ranked as the top cancer specialty by U.S. News & World Report, located in Houston, Texas [8]. - The center has conducted over 1,680 clinical trials in 2024, with 22 drugs approved by the FDA and research funding amounting to $1.1 billion [8]. Group 3: Application Requirements - The position is for two postdoctoral researchers in genomics and tumor biology, requiring a Ph.D. in relevant biological fields [9][10]. - Candidates with backgrounds in tumor biology, genomics, and computational biology are preferred, along with strong communication and teamwork skills [10][11].