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PCL-based 3D nanofibrous structure with well-designed morphology and enhanced specific surface area for tissue engineering application

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Abstract

Tissue engineering opens a new horizon for biological tissue replacement applications. Scaffolds, appropriate cells, and signaling induction are the main three determinant parameters in any tissue engineering applications. Designing a suitable scaffold which can mimic the cellular inherent and natural habitation is of great importance for cellular growth and proliferation. Just like a natural extracellular matrix (ECM), scaffolds provide the cells with an environment for performing biological functions. Accordingly, vast surface area and three-dimensional nanofibrous structures are among the pivotal characteristics of functional scaffolds in tissue engineering, and enhancement of their properties is the main purpose of the present research. In our previous study, a patterned structure composed of continuous nanofibers and microparticles was introduced. In this work, a new modification is applied for adjustment of the surface area of an electrospun/electrosprayed scaffold. For this purpose, at predetermined stages during electrospinning/electrospraying, the nitrogen gas is flushed through the mesh holes of the collector in the opposite direction of the jet movement. This method has led to the formation of very thin nanofibrous layers at nitrogen flush intervals by providing a cooling effect of the sweeping nitrogen. As a consequence, a straticulated structure has been fabricated which possesses extremely high surface/volume ratio. The porosity, water absorption, and morphological analysis were conducted on the obtained scaffold. In vitro cytocompatibility assessments as well as histological analysis demonstrated that the fabricated scaffold provides a proper substrate for cellular attachment, proliferation and infiltration. These findings can be advantageous in three-dimensional tissue engineering such as bone tissue engineering applications. Furthermore, according to the advanced microstructure and vast surface area of the fabricated samples, they can be applied in many other applications, such as membrane, filtration, etc.

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Data availability

The datasets generated during the current study are available from the corresponding author on reasonable request.

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Authors and Affiliations

  1. Department of Advanced Technologies, Shiraz University, Shiraz, Iran

    Fatemeh Hejazi

  2. Department of Polymer Engineering and Color Technology, Amirkabir University of Technology Tehran, Tehran, Iran

    Hamid Mirzadeh

  3. Department of Biomedical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran

    Shahrokh Shojaei

Authors
  1. Fatemeh Hejazi
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  2. Hamid Mirzadeh
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  3. Shahrokh Shojaei
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Correspondence to Fatemeh Hejazi or Hamid Mirzadeh.

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Hejazi, F., Mirzadeh, H. & Shojaei, S. PCL-based 3D nanofibrous structure with well-designed morphology and enhanced specific surface area for tissue engineering application. Prog Biomater 12, 113–122 (2023). https://doi.org/10.1007/s40204-022-00215-5

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  • DOI: https://doi.org/10.1007/s40204-022-00215-5

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