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Cell Research：邓宏魁/屈默龙/顾晋团队构建新型患者来源类器官模型，捕获结直肠癌胎儿样可塑性状态
生物世界· 2025-07-06 07:34
Core Viewpoint - The article discusses a recent study that highlights the role of fetal-like transcription programs in promoting phenotypic plasticity in colorectal cancer, which is crucial for cancer progression, metastasis, and treatment resistance [2][3]. Group 1: Research Development - A patient-derived organoid model (CiPDO) was developed to capture the fetal-like plasticity state in colorectal cancer [4]. - The CiPDO system was cultivated under specific conditions using EGF, CHIR99021, LDN-214117, and FGF2, allowing for long-term expansion of colorectal cancer cells while retaining fetal-like characteristics [7]. Group 2: Key Findings - The research identified an oncofetal state (OnFS) enriched in advanced tumors, associated with key plasticity features including epithelial-mesenchymal transition, increased metastasis, and enhanced treatment resistance [8]. - Mechanistically, the FGF2-AP-1 signaling pathway was shown to maintain the OnFS program and related phenotypic plasticity in colorectal cancer [9]. Group 3: Implications - The patient-derived organoid model provides a powerful platform for studying the fetal-like characteristics of cancer cells and their roles in tumor progression and treatment resistance in colorectal cancer [11].
细菌巧造人工耳！马竞/张天宇团队突破耳廓畸形修复难题，利用细菌编织人工耳廓支架
生物世界· 2025-05-27 03:57
Core Viewpoint - The article discusses a breakthrough in reconstructive surgery for ear deformities, utilizing bacteria as a "biological 3D printer" to create customizable artificial ear scaffolds, potentially transforming clinical practices in auricular reconstruction [2][4]. Group 1: Challenges in Traditional Methods - Traditional ear reconstruction methods involve harvesting rib cartilage, which presents three main challenges: insufficient rib cartilage in children requiring multiple surgeries, the complexity of sculpting and stitching that relies heavily on the surgeon's skill, and the risk of postoperative complications such as infections and scaffold exposure [4][5]. - Existing artificial materials used as cartilage substitutes also face issues, including manual shaping and stitching, along with the risk of rejection [4]. Group 2: Innovative Approach - The research team focused on the bacterium Komagataeibacter xylinus, which can synthesize bacterial cellulose known for its high purity, nanoscale network structure, excellent biocompatibility, and functionalization properties [4][5]. - The bacteria exhibit an "oxygen navigation" feature, allowing them to gather in oxygen-rich areas and secrete nanofibers, which are utilized to create the ear scaffold [5]. Group 3: Key Innovations in Scaffold Production - The team designed a high-oxygen-permeable silicone mold to achieve three critical controls: precise molds created from 3D-printed ear models, dynamic oxygen supply to guide bacteria evenly throughout the scaffold, and nanometer-level precision in the cellulose fibers produced [5][7]. - The cellulose fibers have a diameter of 20-100 nanometers and form a cartilage-like network structure with mechanical strength comparable to real ear cartilage, with an elastic modulus ranging from 3.89 to 9.56 MPa [5][8]. Group 4: Performance and Clinical Implications - After 21 days of bacterial "biomanufacturing" and purification, the artificial ear scaffolds demonstrated remarkable characteristics: precise replication of ear structures, high tensile strength with no deformation after 50 days of immersion, long-term stability in the body, and extremely low endotoxin levels [8][9]. - The scaffolds show over 95% survival rates for cartilage and skin cells, allowing for rapid integration with surrounding tissues, indicating significant clinical application potential for personalized ear reconstruction [9]. Group 5: Broader Impact - This research marks the first application of microbial manufacturing technology in organ reconstruction, offering hope for patients with ear deformities and paving the way for future developments in complex tissue engineering, potentially extending to heart valves and vascular networks [9].
KROGER PARTNERING WITH THE LEUKEMIA & LYMPHOMA SOCIETY (LLS) TO HELP KIDS WITH BLOOD CANCER
Prnewswire· 2025-05-14 13:00
Core Insights - The Leukemia & Lymphoma Society (LLS) has partnered with Kroger's Dallas Division to raise funds for The Dare to Dream Project, aimed at improving treatments for pediatric blood cancer patients and providing support for their families [1][2][4] Group 1: The Dare to Dream Project - The Dare to Dream Project is a $175 million campaign focused on funding pediatric blood cancer research, advocating for healthcare policy changes, and expanding support services for affected children and families [8] - Only 5% of cancer drugs have been approved for first-time use in children, and 80% of childhood cancer survivors face chronic health issues due to their treatments [3] Group 2: Fundraising Efforts - From May 14 to June 3, 2025, Kroger encourages customers to donate at checkout in 110 stores across North and East Texas and Louisiana to support LLS's Dare to Dream Project [2] - Funds raised will exclusively benefit the life-saving work of The Dare to Dream Project, helping to ensure better treatment outcomes for children with blood cancer [1][2] Group 3: LLS's Commitment - LLS is pioneering pediatric blood cancer research, including the establishment of the first-ever pediatric AML Data Commons and the launch of the LLS PedAL Master Clinical Trial [4] - The organization has been dedicated to improving the quality of life for blood cancer patients and their families for over 75 years [6]
