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Preparation of a nano- and micro-fibrous decellularized scaffold seeded with autologous mesenchymal stem cells for inguinal hernia repair

Authors Zhang Y, Zhou Y, Zhou X, Zhao B, Chai J, Liu H, Zheng Y, Wang J, Wang Y, Zhao Y

Received 22 October 2016

Accepted for publication 18 January 2017

Published 21 February 2017 Volume 2017:12 Pages 1441—1452


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Linlin Sun

Yinlong Zhang,1,* Yuanyuan Zhou,1,* Xu Zhou,2,* Bin Zhao,1,* Jie Chai,1 Hongyi Liu,1 Yifei Zheng,1 Jinling Wang,3 Yaozong Wang,4 Yilin Zhao2

1Medical College, Xiamen University, 2Department of Oncology and Vascular Intervention Radiology, 3Department of Emergency, 4Department of Orthopaedics, Zhongshan Hospital, Xiamen University, Xiamen, People’s Republic of China

*These authors contributed equally to this work

Abstract: Prosthetic meshes used for hernioplasty are usually complicated with chronic pain due to avascular fibrotic scar or mesh shrinkage. In this study, we developed a tissue-engineered mesh (TEM) by seeding autologous bone marrow-derived mesenchymal stem cells onto nanosized fibers decellularized aorta (DA). DA was achieved by decellularizing the aorta sample sequentially with physical, mechanical, biological enzymatic digestion, and chemical detergent processes. The tertiary structure of DA was constituted with micro-, submicro-, and nanosized fibers, and the original strength of fresh aorta was retained. Inguinal hernia rabbit models were treated with TEMs or acellular meshes (AMs). After implantation, TEM-treated rabbit models showed no hernia recurrence, whereas AM-treated animals displayed bulges in inguinal area. At harvest, TEMs were thicker, have less adhesion, and have stronger mechanical strength compared to AMs (P<0.05). Moreover, TEM showed better cell infiltration, tissue regeneration, and neovascularization (P<0.05). Therefore, these cell-seeded DAs with nanosized fibers have potential for use in inguinal hernioplasty.

Keywords: nanobiomaterial, tissue engineering, inguinal hernia, hernioplasty, decellularized aorta

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