Core Viewpoint - The article discusses the development of a biodegradable biohydrogel battery that addresses the limitations of traditional batteries in biomedical applications, particularly their poor biocompatibility and non-degradability [3][6]. Group 1: Research Development - A research team from Zhejiang University has developed a flexible, biodegradable battery using light polymerization 3D printing technology, which maintains a stable current of 0.001 - 6 mA at a voltage of 1.5 V [3][7]. - The biohydrogel battery exhibits high printing precision of 50 micrometers, with tensile strain and compression rates of 200% and 95%, respectively, matching the mechanical properties of biological tissues [7]. Group 2: Applications and Functionality - The biohydrogel battery can operate in dual current modes, providing microcurrents (0.001 - 1 mA) to promote tissue regeneration and higher currents (1 - 6 mA) for effective cardiac pacing, offering new avenues for tissue stimulation and biomedical applications [3][7]. - The battery utilizes a conductive ion-type chondroitin sulfate methacrylate-gelatin methacrylate hydrogel and InGa3-Cu nanoparticles as electrolyte and electrode materials, respectively, showcasing excellent mechanical properties and biocompatibility [6][7].

Core Viewpoint - The article discusses the innovative use of hydrogel as a treatment for intrauterine adhesions (IUA), highlighting its potential to improve endometrial repair and fertility recovery through the incorporation of human umbilical cord mesenchymal stem cells and nitric oxide receptor stimulators [1][10]. Group 1: Research Background - IUA is a common complication following endometrial damage, and traditional treatments struggle to achieve simultaneous structural and functional repair of the endometrium [1]. - The research led by Professor Zhou Qian from the Shanghai First Maternity and Infant Health Hospital focuses on addressing the clinical challenge of IUA [1]. Group 2: Research Findings - The study published in Acta Biomaterialia explores the synergy between injectable HA/Gel hydrogel and human umbilical cord mesenchymal stem cells in animal models, providing new insights into preclinical treatment options for endometrial repair and fertility recovery [1][9]. - A novel injectable hydrogel loaded with nitric oxide receptor stimulators was designed to effectively promote endometrial repair in IUA patients, addressing the common issue of insufficient nitric oxide levels [1][10]. Group 3: Upcoming Online Lecture - An online lecture featuring Dr. Zhang Donghai, the first author of the research, is scheduled for December 23, 2025, focusing on the research design, key data, and innovative logic behind the hydrogel treatment for IUA [2][5]. - The lecture aims to provide insights into designing scientifically and practically viable hydrogel treatment strategies, including cell/drug loading strategies and mechanism validation [2][7].

Core Insights - The forum focused on "Innovation Driven, Industry Integration," discussing the challenges and advancements in advanced gel materials and their industrial applications [2] - The event highlighted the significant potential of gel materials in various fields such as biomedicine, environmental protection, and energy storage, driven by national strategies and technological advancements [8] Opening Ceremony - The opening ceremony was hosted by researcher Zhang Xuetong from the Suzhou Institute of Nano-Tech and Nano-Bionics, with a keynote speech by Deputy Director Li Qingwen [6] Conference Reports - Ten keynote speakers from various universities presented on topics including aerogels, artificial intelligence in medicine, ionic gels for flexible fuel cells, and the development of high-performance nanocomposites [10][12][16][20][22][24][26] - Notably, the total number of aerogel-related invention patents in China reached 10,311, surpassing the 6,647 patents filed internationally [24] Parallel Forums - The first parallel forum focused on advanced hydrogel materials, discussing their design, mechanical properties, and biomedical applications [31] - The second forum centered on aerogel materials, covering topics from basic research to key technologies for industrialization [46] - The third forum addressed bioinspired, intelligent, and extreme-performance gel materials, showcasing advancements in various applications [61] Young Scientists Forum - The Young Scientists Forum showcased innovative designs and multifunctional applications of new gel materials, with awards given to six outstanding presentations [64][80] Awards and Recognition - Five excellent poster awards were presented during the closing ceremony, recognizing significant contributions in the field of gel materials [83]

Core Viewpoint - The article discusses a novel approach to control postoperative tumor recurrence using a stable hydrogel system that releases oncolytic viruses, demonstrating its effectiveness in activating immune responses and preventing tumor regrowth after surgery [3][6]. Group 1: Research Background - Tumors pose a significant threat to human health, and postoperative recurrence is a major challenge for patients who have undergone surgery [2]. - Current treatments like chemotherapy and radiotherapy often have severe side effects, highlighting the need for safer and more effective alternatives [2]. Group 2: Study Findings - The research published in Cell Reports Medicine introduces a hydrogel system (adv@Nap gel) that can continuously release oncolytic viruses post-surgery, effectively controlling tumor recurrence [3][6]. - The study confirms that this hydrogel can activate the type I interferon pathway, inducing both innate and adaptive immunity, thereby controlling postoperative tumor recurrence and extending survival in mice [6]. Group 3: Innovations and Implications - **Local Sustained Release System**: The hydrogel provides continuous release of oncolytic viruses, extending the local immune activation window and aligning with the long-term immune regulation needs post-surgery [7]. - **Synergistic Immune Mechanism**: Oncolytic viruses not only directly lyse tumor cells but also activate immune pathways, transforming "cold tumors" into "hot tumors," enhancing sensitivity to other treatments [7]. - **Multi-Virus Platform Applicability**: The study demonstrates that adenoviruses, herpesviruses, and vaccinia viruses can all be effectively delivered using this hydrogel system, indicating broad applicability across various oncolytic virus types [8]. - **Clinical Translation Potential**: The immediate application of this strategy during surgery addresses both micro-residual disease and immune suppression, offering a low-toxicity, high-efficacy combined treatment approach to reduce tumor recurrence [9].

Core Insights - The article summarizes recent advancements in hydrogel research published in various prestigious journals, highlighting innovative applications and properties of hydrogels in diverse fields such as biomedical engineering, materials science, and environmental technology [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Group 1: Hydrogel Innovations - A hydrogel with excellent adhesion properties was developed, demonstrating strong bonding to various substrates and stability in freshwater and seawater environments, confirmed by biocompatibility tests in mice [2]. - A dual-network hydrogel was created that maintains flexibility across extreme temperatures from -115°C to 143°C, significantly expanding the functional range of hydrogels [2]. - Chiral peptide hydrogels were synthesized for use in cancer immunotherapy, showing the ability to induce distinct anti-tumor immune responses by modulating the local immune microenvironment [3]. - A novel nanofiber interwoven gel membrane was developed, exhibiting exceptional CO₂ permeability (2110 GPU) and high selectivity, outperforming traditional gel membranes [3]. Group 2: Advanced Hydrogel Applications - A dynamic phase-adaptive hydrogel platform was introduced, effectively repairing chronic wounds infected by drug-resistant bacteria while significantly reducing scar formation [5]. - A high-performance eutectic gel was created with superior mechanical properties, including a Young's modulus of 103.1 MPa and toughness of 86.8 MJ/m³, while maintaining flexibility at -80°C [5]. - A peptide-based nanorod strategy was employed to enhance the mechanical properties of hydrogels, retaining good biocompatibility and photopolymerizability, which is promising for bone and cartilage repair [5]. - A thermoelectric dressing was developed from sodium alginate hydrogels, utilizing micro-temperature differences to accelerate cell migration and angiogenesis without external power [5]. Group 3: Emerging Hydrogel Technologies - Light-responsive protein hydrogels were created, allowing for reversible light-controlled gelation and the design of light-controlled ligand-receptor pairs, providing new tools for optogenetics and responsive biomaterials [6]. - A hydrogel with a honeycomb-like hierarchical pore structure was designed, achieving a density as low as 800 kg/m³ and a strength increase of 2.4 times compared to existing materials, while reducing overall emissions by 49% [8]. - A biodegradable, temperature-sensitive hydrogel was developed to prevent postoperative cardiac adhesions, demonstrating superior effectiveness compared to commercial products [10]. - A smart siRNA hydrogel system was created, significantly accelerating the healing process of chronic diabetic wounds by dual regulation of ROS levels and MMP-9 expression [18]. Group 4: Upcoming Events - The "Fourth Advanced Hydrogel Materials and Industrial Applications Forum" will be held from October 21-23, 2025, in Suzhou, focusing on innovation-driven industrial integration and providing a platform for collaboration among government, industry, academia, and research [20].

Core Viewpoint - The "4th Advanced Gel Materials and Industrial Applications Forum" will be held from October 21-23, 2025, in Suzhou, focusing on "Innovation-driven, Industry Integration" to create a collaborative platform for government, industry, academia, research, application, and investment [2]. Organizers and Participants - The forum is organized by the Suzhou Institute of Nano-tech and Nano-bionics, Jiangsu Advanced Gel Materials Engineering Research Center, DT New Materials, and Suzhou Nano Technology Development Co., Ltd. [3] - Honorary Chairman: Li Qingwen, Researcher at the Suzhou Institute of Nano-tech and Nano-bionics [3]. - Executive Chairmen: Zhang Xue Tong and Yan Feng, both researchers at the Suzhou Institute of Nano-tech and Nano-bionics and Suzhou University respectively [3]. Agenda Overview - The forum will include a general assembly and keynote speeches on October 22, with various presentations scheduled throughout the day [4][5]. - The agenda features a series of presentations by prominent professors from various universities, covering topics such as high-strength hydrogels, soft robotics, and bio-inspired materials [4][5][6]. Youth Scientist Forum - A special Youth Scientist Forum will take place on October 22, 2025, allowing young scientists to present their research in a structured format, fostering discussion and feedback from experts [12]. - Participants will present for 10 minutes followed by a 5-minute Q&A session, with awards presented during the forum's dinner [12]. Registration and Participation - Registration fees are set at 2600 RMB for regular attendees and 1400 RMB for student representatives, with specific payment instructions provided [19]. - Participants are encouraged to submit posters for display, with guidelines on size and submission process outlined [17]. Previous Forums - The article highlights the successful hosting of previous forums in 2021, 2023, and 2024, indicating a strong foundation and ongoing interest in the field of advanced gel materials [26].

Core Viewpoint - The articles summarize recent advancements in hydrogel research published in various prestigious journals, highlighting innovative applications and properties of hydrogels that could lead to significant industrial and medical advancements [2][3][4]. Group 1: Hydrogel Innovations - A hydrogel with exceptional adhesion properties was developed, demonstrating strong bonding to various substrates and maintaining stability in freshwater and seawater environments, confirmed by biocompatibility tests in mice [2]. - A dual-network hydrogel was created that remains flexible across extreme temperatures from -115 °C to 143 °C, significantly expanding the functional range of hydrogels [2]. - Chiral peptide hydrogels were synthesized for use in cancer vaccines, showing the ability to modulate local immune environments and induce distinct anti-tumor immune responses [3]. Group 2: Performance Enhancements - A novel nanofiber interwoven gel membrane was developed, exhibiting outstanding CO₂ permeability (2110 GPU) and selectivity (CO₂/N₂ of 151, CO₂/CH₄ of 47), surpassing traditional membranes [3]. - A dynamic phase-adaptive hydrogel platform was introduced, effectively repairing chronic wounds infected by drug-resistant bacteria while significantly reducing scar formation [5]. - A high-performance eutectic gel was created with superior mechanical properties, including a Young's modulus of 103.1 MPa and toughness of 86.8 MJ/m³, while maintaining flexibility at -80 °C [5]. Group 3: Advanced Applications - A thermoresponsive hydrogel was developed for post-surgical adhesion prevention, demonstrating superior effectiveness in reducing adhesion rates compared to commercial products without causing cardiac dysfunction [12]. - A smart hydrogel system was designed for the controlled release of siRNA, significantly accelerating the healing process of chronic diabetic wounds [18]. - A new ice-template technique was utilized to create a hydrogel with circumferential fiber structures, showcasing excellent tensile performance and compressibility [19].

Industry Overview - Hydrogel is a highly hydrophilic three-dimensional polymer network known for its excellent water absorption, biocompatibility, and stimulus-responsive properties, making it a key material in various fields such as biomedicine, industrial environmental protection, and daily chemical consumption [1][11] - The market size of China's hydrogel industry is projected to reach 6.95 billion yuan in 2024, with a year-on-year growth of 5.62%, driven by increasing demand in medical applications and the beauty and skincare sector [1][11] Market Size - The hydrogel industry is experiencing growth due to its wide applications, particularly in medical products like hydrogel dressings and tissue engineering scaffolds, as well as in beauty products such as moisturizing and repairing hydrogel masks [1][11] Key Companies - Major players in the Chinese hydrogel market include international giants like 3M Company, Cardinal Health, Inc., and Coloplast Group, which dominate the high-end market due to their technological advantages and brand influence [11] - Domestic companies such as Changchun Jiyuan Biotechnology Co., Ltd. and Zhuhai Guojia New Materials Co., Ltd. are emerging, leveraging technological innovation and market expansion to gain a foothold in the mid-to-high-end market [11][13][14] Industry Chain - The upstream of the hydrogel industry chain includes natural and synthetic polymers, crosslinking agents, and production equipment, while the midstream focuses on hydrogel manufacturing [6][7] - The downstream applications span biomedicine, agriculture, environmental protection, daily chemicals, and industrial uses [7][8] Development Trends - Technological innovation is accelerating, leading to product upgrades, with a focus on smart responsive hydrogels that can react to external stimuli for precise drug delivery and environmental control [14] - The application fields of hydrogels are diversifying, extending beyond traditional sectors to include tissue engineering, regenerative medicine, and smart medical devices [15] - Emphasis on green production and sustainable development is becoming crucial, with a shift towards environmentally friendly materials and production processes [16]

Core Viewpoint - The article discusses the development of a biodegradable biohydrogel battery that addresses the limitations of traditional batteries in biomedical applications, emphasizing the need for high-performance energy sources that are compatible with biological systems [4][7]. Group 1: Biohydrogel Battery Development - Researchers from Zhejiang University have designed a biodegradable biohydrogel battery using light polymerization and 3D printing techniques, showcasing excellent mechanical properties and biocompatibility [4]. - The biohydrogel battery operates at a voltage of 1.5 V, providing a current range of 0.001-6 mA, which supports tissue regeneration and cardiac pacing applications [4][8]. Group 2: Hydrogel Characteristics and Applications - Hydrogels, as three-dimensional cross-linked polymer networks, exhibit properties similar to biological tissues, making them suitable for various biomedical applications such as drug delivery and tissue engineering [6]. - The integration of gallium-based liquid metals with hydrogels enhances their conductivity and mechanical performance, promoting their use in flexible bioelectronic devices [6]. Group 3: Challenges and Solutions in Energy Systems - Traditional batteries face significant limitations in biomedical applications due to poor biocompatibility, non-degradability, and rigidity, which can harm surrounding tissues [7]. - The development of a flexible, biodegradable power source using conductive ion hydrogels and InGa3-Cu nanoparticles addresses these challenges, maintaining stable current during degradation [7]. Group 4: Performance Metrics - The biohydrogel battery features a high printing precision of 50 micrometers, with tensile strain and compression rates of 200% and 95%, respectively, aligning with the mechanical properties of biological tissues [8]. - It operates in dual current modes, facilitating microcurrent for tissue regeneration and high current for effective cardiac pacing [8].

Core Viewpoint - The article highlights the ongoing developments in the field of skin repair and aesthetic medicine, particularly focusing on the integration of exosomes and hydrogels as innovative solutions for skin tissue regeneration and precise repair [1][6]. Group 1: Event Overview - The event titled "2025 Third China Plastic Surgery Innovation and Transformation Competition" is currently open for registration, featuring various sessions on medical aesthetics and innovation in medical devices [1]. - The event will include a special sharing session by Dr. Chen Junge from Beihang University, focusing on the basic mechanisms of skin injury repair and material system design [2][6]. - The event is organized by the Ba Da Chu Plastic Surgery Medical Concept Verification Center, which is the first professional platform in China dedicated to the transformation of plastic surgery technology achievements [5]. Group 2: Key Topics and Discussions - The agenda includes a presentation on "Exosomes and Smart Hydrogels: From Delivery Systems to Skin Regeneration," emphasizing the role of exosomes in skin regeneration and the design logic of hydrogels as delivery systems [4][6]. - Discussions will cover the pathways and technical challenges of exosomes in skin regeneration, the design keys and application differences of hydrogels in delivery systems, and the differentiation of product paths for skin medical and aesthetic applications [10]. - The event aims to explore how basic research can transition into industrial transformation, identifying key links and the layout logic of entrepreneurial teams in the skin repair sector [10].