Article
Engineering, Biomedical
Elia Marin, Orion Yoshikawa, Francesco Boschetto, Taigi Honma, Tetsuya Adachi, Wenliang Zhu, Huaizhong Xu, Narisato Kanamura, Toshiro Yamamoto, Giuseppe Pezzotti
Summary: Poly-caprolactone is a promising biocompatible polymer for temporary devices, but lacks biological support for tissue regeneration. By combining l-dopa and fibroin with electrospun poly-caprolactone fibers, bioactive effects can be induced, promoting proliferation, adhesion, and osteoconduction. The synergistic effects of these substances lead to improved mechanical properties and increased mineralized deposits in vitro.
BIOMEDICAL MATERIALS
(2022)
Article
Engineering, Biomedical
Gyeongjin Joo, Myeongki Park, Seong-su Park, Garima Tripathi, Byong-Taek Lee
Summary: An alginate-tasted polycaprolactone-gelatin-beta-tricalcium phosphate dual membrane was fabricated to enhance new bone formation under guided bone regeneration (GBR) process. The dual layered membrane exhibited compatibility with cells and suppressed fibrous tissue infiltration while promoting bone growth.
BIOMEDICAL MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Caroline S. Taylor, Joseph Barnes, Manohar Prasad Koduri, Shamsal Haq, David A. Gregory, Ipsita Roy, Raechelle A. D'Sa, Judith Curran, John W. Haycock
Summary: Silane modification is a cost-effective method to modify existing biomaterials for tissue engineering. This study reports the deposition of CL11 onto PCL scaffolds for peripheral nerve regeneration. The modified fibers significantly support cell viability and differentiation, indicating their potential for improving nerve regeneration.
MACROMOLECULAR BIOSCIENCE
(2023)
Article
Engineering, Biomedical
Alok Kumar, Seyed Mohammad Mir, Ibrahim Aldulijan, Agrim Mahajan, Aneela Anwar, Carlos H. Leon, Amalia Terracciano, Xiao Zhao, Tsan-Liang Su, Dilhan M. Kalyon, Sangamesh G. Kumbar, Xiaojun Yu
Summary: A biodegradable composite structure of PCL-PGA with varying amounts of PGA was designed, showing potential for bone tissue engineering applications in bone defect repair. The porosity developed during PGA degradation compensated for the decrease in mechanical properties, making it a suitable candidate for bone reconstruction where strength and biodegradation are important.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
(2021)
Article
Engineering, Biomedical
Yubo Shi, Lei Wang, Liguo Sun, Zhennan Qiu, Xiaoli Qu, Jingyi Dang, Zhao Zhang, Jiankang He, Hongbin Fan
Summary: Melt electrospinning writing (MEW) is a promising 3D printing technology for scaffold fabrication. This study investigated the use of NaOH treatment to enhance the cytocompatibility and osteoinductive properties of polycaprolactone (PCL) scaffolds. The NaOH-treated PCL scaffold exhibited nanopits and nanogrooves on the surface, which increased surface roughness and wettability, leading to improved cell proliferation and adhesion. In vitro experiments demonstrated that the NaOH-treated surface could induce osteogenic differentiation of bone marrow mesenchymal stem cells via the integrin alpha 2/beta 1-PI3K-Akt signaling pathway. Animal studies showed that the NaOH-treated PCL scaffold promoted new bone formation. The study concluded that NaOH treatment is a simple and effective method to enhance the cellular affinity and osteoinductive property of MEW PCL scaffolds.
INTERNATIONAL JOURNAL OF BIOPRINTING
(2023)
Article
Polymer Science
Julia Venturini Helaehil, Carina Basqueira Lourenco, Boyang Huang, Luiza Venturini Helaehil, Isaque Xavier de Camargo, Gabriela Bortolanca Chiarotto, Milton Santamaria-Jr, Paulo Bartolo, Guilherme Ferreira Caetano
Summary: Composite scaffolds made of polycaprolactone (PCL) mixed with bioceramics, such as hydroxyapatite (HA) and tricalcium phosphate (TCP), showed improved biological recognition and bioactivity. Electrical stimulation (ES) enhanced cell proliferation and differentiation. The study revealed that the combined use of PCL with HA or TCP scaffolds and ES improved bone regeneration.
Article
Engineering, Biomedical
Feilong Wang, Dandan Xia, Siyi Wang, Ranli Gu, Fan Yang, Xiao Zhao, Xuenan Liu, Yuan Zhu, Hao Liu, Yongxiang Xu, Yunsong Liu, Yongsheng Zhou
Summary: In this study, a photocrosslinkable composite membrane containing collagen and polycaprolactone methacryloyl was developed, and the addition of magnesium particles improved its mechanical properties and degradation rate. The composite membrane demonstrated spatial support and enhanced osteogenic capability, making it suitable for oral implant repair.
BIOACTIVE MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Elham Bagherzadeh, Zahra Sherafat, Seyed Mojtaba Zebarjad, Azin Khodaei, Saber Amin Yavari
Summary: Polymeric scaffolds play a crucial role in tissue engineering due to their diversity, adaptability, and processability. Piezoelectric PVDF/PCL blend fibers are developed to promote bone regeneration by converting mechanical impulses to electrical signals. These fibers show improved wettability, controlled biodegradability, and piezoelectric behavior, and they are found to be biocompatible, supporting cell attachment, proliferation, and stem cell differentiation into osteoblasts. The potential of these blend fibers for bone scaffolds is undeniable.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Biophysics
Shujun Cao, Qiujing Li, Shukun Zhang, Kaihua Liu, Yifan Yang, Jingdi Chen
Summary: Bone tissue engineering plays a significant role in bone defect repair and regeneration. This article introduces a low-cost manufacturing method for a new bone repair composite scaffold that shows improved mechanical properties and stability compared to other scaffolds, promoting cell proliferation and bone tissue formation.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Xuefeng Zhou, Xi Cheng, Danlei Xing, Qi Ge, Yan Li, Xianghong Luan, Ning Gu, Yunzhu Qian
Summary: This study aimed to enhance the osteogenic potential of bioactive synthetic scaffolds through the development of a novel PP/COL I-pDA-Ca scaffold, which showed increased cell adhesion and osteogenic differentiation in cell culture experiments. The incorporation of polydopamine-based Ca chelation, COL I, and 3D bionic structure in the scaffold promoted osteogenesis and cell adhesion, making it an attractive alternative for guided bone regeneration.
MATERIALS & DESIGN
(2021)
Article
Biotechnology & Applied Microbiology
Paola Nitti, Sanosh Kunjalukkal Padmanabhan, Serena Cortazzi, Eleonora Stanca, Luisa Siculella, Antonio Licciulli, Christian Demitri
Summary: In this study, composite structures made of hydroxyapatite scaffold impregnated with a collagen slurry were designed to mimic bone tissue structure, with the addition of magnesium and silicon ions enhancing mechanical and biological properties. An innovative freeze-drying approach was developed to create open-pore structures for tissue regeneration. The biodegradation behavior of the scaffolds, particularly HA-Mg_Coll scaffolds, showed moderate weight loss and mechanical performance reduction due to collagen dissolution, while also protecting the ceramic structure until degradation, making them suitable candidates for bone remodeling.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Engineering, Biomedical
Xiaotang He, Wen Li, Siyang Liu, Yi Li, Yining Chen, Nianhua Dan, Weihua Dan, Meifeng Zhu
Summary: In this study, high-strength, flexible, and porous collagen-based scaffolds were successfully prepared using a novel strategy. Compared to regular collagen scaffolds, these scaffolds demonstrated superior mechanical properties and cell compatibility. Animal experiments showed that the scaffolds promoted cell infiltration, vascularization, and tissue regeneration. This study provides a new solution for tissue repair and broadens the application range in regenerative medicine.
MATERIALS TODAY BIO
(2022)
Article
Nanoscience & Nanotechnology
Xinchen Wu, Olivia Gauntlett, Tengfei Zhang, Sanika Suvarnapathaki, Colleen McCarthy, Bin Wu, Gulden Camci-Unal
Summary: Scaffold-based bone regeneration using eggshell microparticles in protein-derived hydrogels significantly promotes bone regeneration by inducing osteogenic differentiation and supporting tissue infiltration over a 12-week period.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Jing-Han Song, Jun-Ting Gu, Gao-Peng Dang, Zhi-Ting Li, Chen Lei, Ling Li, Zhao Mu, Franklin R. Tay, Kai Jiao, Li-na Niu
Summary: Unmodified collagen scaffolds are limited in bone tissue engineering due to their mechanical and osteoinductive properties. A DNA-crosslinked collagen scaffold (DNA-Col) is fabricated to enhance bone healing. The improved osteogenic performance of DNA-Col is attributed to its interaction with T cells, specifically regulatory T cells (Tregs). Mechanistic experiments show that DNA-Col triggers recruitment of Tregs in vivo, and depletion of Tregs reverses DNA-Col-induced bone regeneration. Further investigations reveal that DNA-Col promotes Treg differentiation through metabolic reprogramming. These findings establish the role of DNA-Col as a bioactive bone regeneration scaffold via its interaction with Tregs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biotechnology & Applied Microbiology
Bingqian Wang, Yuyang Zeng, Shaokai Liu, Muran Zhou, Huimin Fang, Zhenxing Wang, Jiaming Sun
Summary: In this study, it was discovered that ZIF-8 can induce the formation of large hydroxyapatite-like crystals when soaked directly in simulated body fluid. These crystals grew rapidly for two weeks, increasing in volume over 10-fold. It was found that ZIF-8 particles can undergo gradual collapse and re-nucleation, leading to improved biocompatibility and osteoinductivity of poly(ε-caprolactone) (PCL).
JOURNAL OF NANOBIOTECHNOLOGY
(2023)