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Dunn A, Haas G, Madsen J, Ziemkiewicz N, Au J, Johnson D, West C, Chauvin H, Gagyi SM, Garg K. Biomimetic sponges improve functional muscle recovery following composite trauma. J Orthop Res 2022; 40:1039-1052. [PMID: 34289186 PMCID: PMC8776909 DOI: 10.1002/jor.25143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 06/02/2021] [Accepted: 06/24/2021] [Indexed: 02/04/2023]
Abstract
There is a dearth of therapies that are safe and effective for the treatment of volumetric muscle loss (VML), defined as the surgical or traumatic loss of muscle tissue, resulting in functional impairment. To address this gap in orthopedic care, we developed a porous sponge-like scaffold composed of extracellular matrix (ECM) proteins (e.g., gelatin, collagen, and laminin-111) and an immunosuppressant drug, FK-506. While the majority of VML injuries occur in orthopedic trauma cases, preclinical models typically study muscle injuries in isolation without a concomitant bone fracture. The goal of this study was to investigate the extent to which FK506 loaded biomimetic sponges support functional muscle regeneration and fracture healing in a composite trauma model involving VML injury to the tibialis anterior muscle and osteotomy (OST) to the tibia. In this model, implantation of the FK-506 loaded biomimetic sponges limited the extent of inflammation while increasing the total number of myofibers, mean myofiber cross-sectional area, myosin-to-collagen ratio, and peak isometric torque compared to untreated VML+OST muscles on Day 28. Although all tibia fractures were bridged by Day 28 post-injury, fracture healing was impaired in response to an adjacent VML injury. Sponge treatment increased bone callus volume, yet the bridged mineralized bone volume was not significantly different. Taken together, these results suggest that biomimetic sponges primarily benefitted muscle repair and may provide a promising therapy for traumatized muscle.
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Affiliation(s)
- Andrew Dunn
- Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University
| | - Gabriel Haas
- Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University
| | - Joshua Madsen
- Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University
| | - Natalia Ziemkiewicz
- Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University
| | - Jeffrey Au
- Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University
| | - David Johnson
- Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University
| | - Charles West
- Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University
| | - Hannah Chauvin
- Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University
| | | | - Koyal Garg
- Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University,Address correspondence to: Koyal Garg, PhD, Assistant Professor, Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, 3507 Lindell Blvd, St. Louis, MO 63103, Phone: 314.977.1434,
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Lu Y, Xu H, Jiang Y, Li D, Hu Z, Yan C, Yin H, Li D, Zhao X, Zhang Y, Tian Y, Zhu Q, Wang Y. Effect of BMP6 on the proliferation and apoptosis of chicken chondrocytes induced by thiram. Res Vet Sci 2021; 142:101-109. [PMID: 34906792 DOI: 10.1016/j.rvsc.2021.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/22/2021] [Accepted: 12/01/2021] [Indexed: 10/19/2022]
Abstract
The development of skeleton system is a complex biological process and be regulated by many transcription factors. Previous studies have shown that BMP6 is involved in skeleton development and other cells transforming to chondrocytes, but it is still not known whether do something to tibial dyschondroplasia (TD) broilers chondrocytes. In this study, RT-PCR revealed that the expression level of BMP6 in TD broiler chondrocytes at 7 days age was significantly decreased compared with normal group (P < 0.05). CCK-8 and EdU assay showed that the proliferation of cells transfected with interference BMP6 was significantly decreased compared with control siRNA, while cell proliferation was significantly increased after overexpression of BMP6. Meanwhile, the proportion of G0/G1 phase cells was significantly increased and the proportion of G2/M phase cells was significantly decreased after interference of BMP6 for 48 h in TD chicken chondrocytes (P < 0.05). In addition, flow cytometry analysis exhibited that interference BMP6 significantly increased apoptosis rate and necrotizing rate of cells. In conclusion, these results suggest that BMP6 plays a positive role in the growth and development of TD broiler chondrocytes. Our findings reveal a new target for TD prevention in broiler chickens.
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Affiliation(s)
- Yuxiang Lu
- Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, 211# Huiming Street, Wenjiang district Chengdu, 611130, China
| | - Hengyong Xu
- Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, 211# Huiming Street, Wenjiang district Chengdu, 611130, China
| | - Yuru Jiang
- Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, 211# Huiming Street, Wenjiang district Chengdu, 611130, China
| | - Dan Li
- Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, 211# Huiming Street, Wenjiang district Chengdu, 611130, China
| | - Zhi Hu
- Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, 211# Huiming Street, Wenjiang district Chengdu, 611130, China
| | - Chaoyang Yan
- Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, 211# Huiming Street, Wenjiang district Chengdu, 611130, China
| | - Huadong Yin
- Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, 211# Huiming Street, Wenjiang district Chengdu, 611130, China
| | - Diyan Li
- Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, 211# Huiming Street, Wenjiang district Chengdu, 611130, China
| | - Xiaoling Zhao
- Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, 211# Huiming Street, Wenjiang district Chengdu, 611130, China
| | - Yao Zhang
- Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, 211# Huiming Street, Wenjiang district Chengdu, 611130, China
| | - Yaofu Tian
- Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, 211# Huiming Street, Wenjiang district Chengdu, 611130, China
| | - Qing Zhu
- Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, 211# Huiming Street, Wenjiang district Chengdu, 611130, China.
| | - Yan Wang
- Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, 211# Huiming Street, Wenjiang district Chengdu, 611130, China.
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