{"title":"Hydrogel innovations for 3D organoid culture.","authors":"Yicheng Feng, Dongyang He, Xiao An","doi":"10.1088/1748-605X/add82d","DOIUrl":"10.1088/1748-605X/add82d","url":null,"abstract":"<p><p>Organoids are functional cell-tissue complexes that mimic structural and functional characteristics of organs<i>in vitro</i>in three dimensions (3D). Mimicking the natural extracellular matrix (ECM) environment is critical for guiding stem cell fate within organoid cultures. Current organoid cultures predominantly utilize animal- or tumor-derived ECMs such as dECMs and Matrigel. However, these materials introduce batch variability and uncertainty in composition, which hinders reproducibility. In contrast, naturally derived and synthetic hydrogels with excellent biocompatibility offer precise and adjustable compositions, along with tunable mechanical properties, thereby providing robust support for organoid development and maturation. We explore innovative hydrogel designs tailored specifically for organoid cultures, emphasizing the influence and meticulous control of functional hydrogels on organoid formation, differentiation, and maturation processes. Furthermore, the review highlights the potential of functionalized hydrogel scaffolds to advance both research and industrial applications in tissue and organ engineering. As research progresses, investigations will further concentrate on improving the adjustable properties, expanding their scope of application, and more biologically compatible gelation strategies of hydrogels.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144057921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Rapidly curable zinc chondroitin sulfate @ methacrylated hyaluronic acid hydrogel: a novel photocurable biomaterial tailored for emergency wound management.","authors":"Shiman Li, Qili Sun, Huicheng Cao, Chunan Lu, Jialin Yu, Kangyu Chen, Chuqing Tang, Zimo Li, Shuaishuai Cao, Tenghui Zeng, Bin Tang","doi":"10.1088/1748-605X/add63b","DOIUrl":"10.1088/1748-605X/add63b","url":null,"abstract":"<p><p>In today's emergency medical field, rapid hemostasis and wound healing technologies are of paramount importance. However, traditional methods, although effective, have limitations such as slow hemostasis, susceptibility to infection, and unsuitability for irregular wounds. To address these issues, this study combined methacrylated hyaluronic acid (HAMA) with zinc chondroitin sulfate (CSZn) to successfully develop a novel sprayable photocurable hydrogel, CSZn@HAMA. Material characterization confirmed that CSZn was effectively loaded into HAMA, while retaining HAMA's photocurable and sprayable properties. This allows the CSZn@HAMA hydrogel to rapidly solidify and form a tight protective film over the wound after spraying. Further cell experiments demonstrated that this hydrogel has significant anti-inflammatory effects and can effectively promote collagen production and angiogenesis. Therefore, CSZn@HAMA has emerged as a promising biomaterial for wound management in emergency medical care.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144008280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shuai Gao, Zheng Liu, Wei Zeng, Xi Liu, Fanjun Zhang, Dimeng Wu, Yunbing Wang
{"title":"Dressing antibacterial platinum loaded polyurethane materials by a stable hydrophilic coating with robust antithrombotic properties.","authors":"Shuai Gao, Zheng Liu, Wei Zeng, Xi Liu, Fanjun Zhang, Dimeng Wu, Yunbing Wang","doi":"10.1088/1748-605X/add6fa","DOIUrl":"10.1088/1748-605X/add6fa","url":null,"abstract":"<p><p>Thrombus formation and infection resulting from blood contact with medical materials represent significant clinical complications characterized by a mutually reinforcing relationship between the two phenomena. Consequently, the development of hydrophilic coatings that simultaneously release bactericidal agents and exhibit passive antithrombotic properties is of paramount importance. In this work, we employed a straightforward, easily executable, and amenable to scale-up strategy to synthesize an antibacterial polyurethane matrix containing platinum complex, followed by the construction of a phosphorylcholine-based hydrophilic coating on its surface via surface-initiated polymerization. The antibacterial efficacy arises from the sustained release mechanism of platinum complex ions, while the phosphorylcholine coating exhibits remarkable antithrombotic characteristics. These two functionalities operate both independently and synergistically within the material to provide robust antibacterial and antithrombotic performance.<i>In vitro</i>and<i>in vivo</i>experiments validated the effectiveness of this composite material in inhibiting bacterial growth and preventing thrombus formation. Furthermore, histological analysis along with immunological detection confirmed that the coating material has excellent biocompatibility coupled with anti-inflammatory effects. Therefore, the developed innovative coating with efficient antibacterial and antithrombotic effects shows great promise as an effective strategy for mitigating risks associated with infections and thrombus formation in clinical settings involving blood-contacting medical devices and related implants.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144036392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Amanda C Juraski, Victor A da Silva, Ruchi Sharma, Adriano R Azzoni, Stephanie M Willerth
{"title":"Investigation of novel carboxymethyl chitosan-based bioinks for 3D bioprinting of neural tissues.","authors":"Amanda C Juraski, Victor A da Silva, Ruchi Sharma, Adriano R Azzoni, Stephanie M Willerth","doi":"10.1088/1748-605X/add6f9","DOIUrl":"10.1088/1748-605X/add6f9","url":null,"abstract":"<p><p>The formulation of bioinks is critical for successful 3D bioprinting. It influences printability, stability, and cell behavior. One of the main demands in 3D bioprinting is the development of bioink formulations that can balance long-term cell viability and compositional similarities to the extracellular matrix (ECM) with rheological properties for 3D printing. To address this challenge, this study tested new bioinks using carboxymethyl chitosan (N,O-CMCS or O-CMCS), alginate, and fibrin, which are promising biomaterials due to their biocompatibility and likeness to the ECM. 3D bioprinting of neural tissues comes with additional challenges because neural cells are highly sensitive to environmental conditions. Therefore, we optimized our bioink formulations for the 3D bioprinting of neural progenitor cells derived from human induced pluripotent stem cells (hiPSC-NPC). Here we report a neural tissue constructed 3D bioprinted with a hiPSC-NPC-laden 1% N,O-CMCS, 1% alginate, and 20 mg ml<sup>-1</sup>fibrin. This formulation exhibited uniform consistency and minimal extrusion force fluctuations (approximately 8 KPa), indicating homogeneity and optimal printability using an extrusion-based bioprinter. In contrast, O-CMCS formulations did not support neural tissue differentiation while higher concentrations of N,O-CMCS or alginate (3% w/v) resulted in increased viscosity and poorly defined scaffolds. The optimized bioink demonstrated significant water retention, swelling up to 15 times its original weight without losing structural integrity, thus providing a conducive environment for cell culture. Live/dead staining revealed over 60% cell viability over 30 d, underscoring its suitability for long-term cell applications. Immunocytochemistry confirmed that the optimized N,O-CMCS-based bioink effectively guided cells toward further differentiation into neurons and astrocytes, thus forming a 3D bioprinted construct that is able to replicate different neural cell types found in the neural tissue. The optimized bioink described in this study lays the groundwork for future works that will focus on detailing how different CMCS groups affect tissue maturation and functionality in 3D bioprinted constructs that can potentially be used for future neural tissue modeling and drug screening.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143998233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Red blood cell membrane-camouflaged nanocarriers for the delivery of piperlongumine to treat triple-negative breast cancer.","authors":"Chenxi Li, Jiaxin Zhang, Xianxian Yao, Yuxin Huang, Yichen Zhang, Wuli Yang","doi":"10.1088/1748-605X/add4da","DOIUrl":"10.1088/1748-605X/add4da","url":null,"abstract":"<p><p>The application of the conventional drugs for triple-negative breast cancer (TNBC) treatment in chemotherapy is limited due to their intrinsic drawbacks such as short drug half-life, lack of tumor selectivity and systemic toxicity. Herein, an effective nanoparticle drug delivery system (NDDS) of red blood cell (RBC) membrane-camouflaged piperlongumine (PL)-loaded iron oxide (Fe<sub>3</sub>O<sub>4</sub>) magnetic nanoparticles (Fe<sub>3</sub>O<sub>4</sub>-PL@RBC) was rationally designed as an effective drug delivery platform for<i>in vivo</i>TNBC treatment. The Fe<sub>3</sub>O<sub>4</sub>-PL@RBC showed considerable cytotoxicity against MDA-MB-231 cells, inducing intracellular accumulation of reactive oxygen species, mitochondrial dysfunction and apoptosis. Furthermore, transcriptomic analyses and western blotting analysis demonstrated that the Fe<sub>3</sub>O<sub>4</sub>-PL@RBC induced apoptosis through the inhibition of PI3K/AKT/mTOR pathway and downregulation of Bcl-2 protein. In MDA-MB-231 tumor models, the RBC membrane coating in Fe<sub>3</sub>O<sub>4</sub>-PL@RBC effectively prolonged the circulation time and sufficient enrichment at the tumor sites. And the Fe<sub>3</sub>O<sub>4</sub>-PL@RBC significantly inhibited tumor growth with good biosafety. This study provides guidance for the rational design of effective Fe<sub>3</sub>O<sub>4</sub>-based NDDS for TNBC treatment.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144059771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xinhao Dang, Yan Xue, Siying Zhang, Menglan Chen, Kangliang Sheng, Jie Ma, Shan Gao, Yongzhong Wang
{"title":"Recent advances in anti-tumor mechanisms and biological applications of vanadium compounds.","authors":"Xinhao Dang, Yan Xue, Siying Zhang, Menglan Chen, Kangliang Sheng, Jie Ma, Shan Gao, Yongzhong Wang","doi":"10.1088/1748-605X/add3e5","DOIUrl":"https://doi.org/10.1088/1748-605X/add3e5","url":null,"abstract":"<p><p>Vanadium, a transition metal, has emerged as a promising element in the development of therapeutic drugs. While not an essential element for life, vanadium compounds have demonstrated significant potential as anticancer agents. Current evidence suggests that these compounds exert their anti-tumor effects through multiple mechanisms, including DNA damage, cell cycle regulation, induction of apoptosis and autophagy, inhibition of metastasis and invasion, and disruption of mitochondrial function. Furthermore, vanadium compounds have shown efficacy against a wide range of cancers, such as melanoma, breast, colorectal, pancreatic, liver, and central nervous system tumors, as well as oral squamous cell carcinoma. This review aims to comprehensively examine the anti-tumor properties and underlying mechanisms of various vanadium compounds while also providing an overview of their current biological applications.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":"20 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144053872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bioprosthetic heart valves with zwitterionic copolymer grafting to improve the properties of endothelialization and anti-calcification.","authors":"Daoyang Zhu, Yu Luo, Shenyu Huang, Lie Ma","doi":"10.1088/1748-605X/add3e7","DOIUrl":"https://doi.org/10.1088/1748-605X/add3e7","url":null,"abstract":"<p><p>Heart valve replacement surgery has been the most effective treatment for severe valvular heart disease. Bioprosthetic heart valves (BHVs) crosslinked by glutaraldehyde (GA) have non-negligible advantages in clinical applications. However, structural valve degeneration, calcification, insufficient re-endothelialization and other factors lead to a shortened service life of BHVs. In this study, GA-crosslinked decellularized heart valves (GADHVs) were grafted with zwitterionic copolymer (PSBG) of [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl) ammonium hydroxide and glycidyl methacrylate, and further treated with Arg-Glu-Asp-Val (REDV) peptide to obtain REDV-PSBG-GADHVs with anti-fouling ability and endothelial cell affinity. REDV-PSBG-GADHVs exhibited good collagen stability, reliable mechanical property and excellent hemocompatibility. Moreover,<i>in vitro</i>and<i>in vivo</i>experiments demonstrated that REDV-PSBG-GADHVs exhibited better endothelialization property, lower immune responses and reduced calcification than GADHVs. This modified strategy for heart valve fabrication, which can improve the effect of anti-calcification and endothelialization while maintaining the original advantages of BHVs, shows great potential for application in heart valve replacement.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":"20 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144059855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anshul Singh, Sheersha Pramanik, Ammar Kadi, Bassam M Abualsoud, Manisha Singh, Mohammad Javed Ansari, Abdelwahab Omri, A Deepak, Pankaj Nainwal, Stefano Bellucci
{"title":"Chitosan nanoparticles: a versatile frontier in drug delivery and wound healing across multiple routes.","authors":"Anshul Singh, Sheersha Pramanik, Ammar Kadi, Bassam M Abualsoud, Manisha Singh, Mohammad Javed Ansari, Abdelwahab Omri, A Deepak, Pankaj Nainwal, Stefano Bellucci","doi":"10.1088/1748-605X/add3e6","DOIUrl":"https://doi.org/10.1088/1748-605X/add3e6","url":null,"abstract":"<p><p>The domain of nanoscience has observed significant advancements over the former two decades. Researchers in nanomedicine field have been rigorously exploring the employment of natural biodegradable polymers for targeted drug delivery (TDD). Chitosan (CS), acquired from the deacetylation of chitin, is a naturally occurring amino polysaccharide, whose features of non-toxicity, prolonged retention time, biocompatibility, increased bioavailability, and biodegradability have hastened extensive study into diverse applications. The presence of amino and hydroxyl groups within CS is crucial for its noteworthy characteristics, comprising mucoadhesion, improvement of permeation, drug's-controlled release,<i>in situ</i>gel preparation, and antimicrobial activity. CS nanoparticles (CS NPs) portray a safe and competent class of nanocarrier systems, demonstrating the controlled release of drugs and preciseness in TDD, and are found hopeful for treating wounds. However, safety concerns such as potential toxicity, immune response, and hemocompatibility must be carefully evaluated to ensure their suitability for clinical applications. This article explores the potential of CS NPs as versatile carriers for TDD, reporting essential challenges in both therapeutic domains, and progressing the advancement of innovative treatments. By connecting drug delivery and wound healing, our review addresses a critical convergence, fostering developments that can certainly affect treatment and recovery of patient. The initial part of the review will shed light on the extraction sources and notable attributes of CS. Additionally, we have presented recent research findings on how CS NPs are being utilized for drug delivery via different routes of administration. Further, we have endeavored to represent the latest investigations on the applications of CS NPs in wound healing.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":"20 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144055115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A preliminary study on the promotion of wound healing by paeoniflorin carbon dots loaded in chitosan hydrogel.","authors":"Ruiming Feng, Feng Tian, Jian Zhou, Yilin Ping, Wenze Han, Xuexue Shi, Xue Bai, Yufeng Sun, Jiali Zhao, Xiuping Wu, Bing Li","doi":"10.1088/1748-605X/add2ba","DOIUrl":"https://doi.org/10.1088/1748-605X/add2ba","url":null,"abstract":"<p><p>Due to poor angiogenesis under the wound bed, wound treatment remains a clinical challenge. Therefore, there is an urgent need for new dressings to combat bacterial infections, accelerate angiogenesis, and accelerate wound healing. In this study, we prepared carbon dots nanomaterial (PF-CDs) derived from traditional Chinese medicine paeoniflorin using a simple green one pot hydrothermal method. The average particle size of the CSs we prepared was 4 nm, and a concentration of 200 μg ml<sup>-1</sup>was ultimately selected for experiments. Subsequently, PF-CDs were loaded into the chitosan hydrogel to form a new type of wound dressing CSMA@PF-CDs hydrogel. CSMA@PF-CDs demonstrated positive biocompatibility by promoting a 20% increase in cell proliferation and strong antibacterial activity. In comparison to the control group, CSMA@PF-CDs enhanced the expression level of anti-inflammatory factors by at least 2.5 times and reduces the expression level of pro-inflammatory factors by at least 3 times. Furthermore, CSMA@PF-CDs promoted the migration of Human umbilical vein endothelial cells and increased vascular endothelial growth factor expression by 5 times. The results of<i>in vivo</i>experiments indicate that CSMA@PF-CDs significantly promoted the healing of back wounds in rats. These characteristics make it a promising material for repairing infected wounds and a potential candidate for clinical skin regeneration applications.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":"20 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144036311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shristi Panigrahi, Shraavani Konatam, Antara Tandi, Dijendra Nath Roy
{"title":"A comprehensive review of emerging 3D-printing materials against bacterial biofilm growth on the surface of healthcare settings.","authors":"Shristi Panigrahi, Shraavani Konatam, Antara Tandi, Dijendra Nath Roy","doi":"10.1088/1748-605X/add2bb","DOIUrl":"https://doi.org/10.1088/1748-605X/add2bb","url":null,"abstract":"<p><p>A significant burden on the healthcare system, microbial contamination of biomedical surfaces can result in hospital-acquired illnesses. Bacteria, viruses, and fungi may live on surfaces for days or months and spread to patients and medical personnel. This article describes the 3D printing technologies, such as fused deposition modeling, bioprinting, binder jetting/inkjet, poly-jet, electron beam manufacturing, stereolithography, selective laser sintering, and laminated object manufacturing used for manufacturing the healthcare setting's surface to reduce bacterial contamination with exploring anti-biofilm activity against different bacterial species responsible for infections, based on the critical evaluation of published reports. This strategy has immense potential to become an upcoming approach for advancing the coating concept on the material's surface in healthcare settings. Our literature evaluation identifies beneficial 3D printing materials and associated technologies against microorganisms' growth, mainly bacteria involved in implant-based infection, emphasizing the development of anti-biofilm 3D-printed surfaces. Additionally, the authors have identified a few key areas where research and development are critically required to advance 3D-printing technology in healthcare settings.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":"20 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144043190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}