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From Molecules to Tissues: Health, Injury and Disease

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Biophysics".

Deadline for manuscript submissions: closed (10 October 2023) | Viewed by 2677

Special Issue Editor


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Guest Editor
Department of Biology, Department of Biomedical Engineering, The Center for Molecular Study of Condensed Soft Matter, Illinois Institute of Technology, Chicago, IL 60616, USA
Interests: protein structure; X-ray diffraction; collagen; extracellular matrix; neuroscience; traumatic brain injury
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Special Issue Information

Dear Colleagues,

Homeostasis in humans is a complex process consisting of cellular and sub-cellular molecular interactions and responses that affect tissue structure and function. The body maintains and regulates these processes and, to a certain extent, is able to repair imbalances that may occur due to pathologies arising from injury and/or disease. However, severe damage from chemical, mechanical and/or other biological insults to tissues is often serious to the extent that the body is incapable of taking restorative actions in a reasonable time. These situations require us to understand the mechanics and mechanisms of homeostasis at these various hierarchical levels at a high level of detail, both individually and in relation to the tissue-level response.

Recent advancements in determining multi-scale tissue properties and attributing them to total body functions have improved drastically. X-ray diffraction (XRD), electron microscopy (EM) and cryo-EM are amongst the most popular techniques currently deployed to develop high-resolution and high-fidelity mathematical models and simulations of various human organs, organ systems and full bodies under physiological and pathological conditions. This Special Issue is focused on collecting cutting-edge research elucidating the multi-scale structure and function of human and animal tissues and their potential use in mathematical modeling of these tissues at all hierarchical levels. That is, contributions relevant to any part of this scale, and those that are multi-scale, are especially welcome. Manuscripts that describe the development of methods to determine these properties will also be accepted, alongside those that describe mathematical models based on previously performed experimental works.

Prof. Dr. Joseph Orgel
Guest Editor

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Published Papers (1 paper)

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Research

14 pages, 2085 KiB  
Article
Angiogenic Modification of Microfibrous Polycaprolactone by pCMV-VEGF165 Plasmid Promotes Local Vascular Growth after Implantation in Rats
by Ilya Klabukov, Maksim Balyasin, Olga Krasilnikova, Timur Tenchurin, Alexander Titov, Mikhail Krasheninnikov, Daniil Mudryak, Yana Sulina, Alexey Shepelev, Sergei Chvalun, Tatiana Dyuzheva, Anna Yakimova, Dmitry Sosin, Alexey Lyundup, Denis Baranovskii, Peter Shegay and Andrey Kaprin
Int. J. Mol. Sci. 2023, 24(2), 1399; https://doi.org/10.3390/ijms24021399 - 11 Jan 2023
Cited by 14 | Viewed by 2153
Abstract
Insufficient vascular growth in the area of artificial-material implantation contributes to ischemia, fibrosis, the development of bacterial infections, and tissue necrosis around the graft. The purpose of this study was to evaluate angiogenesis after implantation of polycaprolactone microfiber scaffolds modified by a pCMV-VEGF165-plasmid [...] Read more.
Insufficient vascular growth in the area of artificial-material implantation contributes to ischemia, fibrosis, the development of bacterial infections, and tissue necrosis around the graft. The purpose of this study was to evaluate angiogenesis after implantation of polycaprolactone microfiber scaffolds modified by a pCMV-VEGF165-plasmid in rats. Influence of vascularization on scaffold degradation was also examined. We investigated flat microfibrous scaffolds obtained by electrospinning polycaprolactone with incorporation of the pCMV-VEGF-165 plasmid into the microfibers at concentrations of 0.005 ng of plasmid per 1 mg of polycaprolactone (0.005 ng/mg) (LCGroup) and 0.05 ng/mg (HCGroup). The samples were subcutaneously implanted in the interscapular area of rats. On days 7, 16, 33, 46, and 64, the scaffolds were removed, and a histological study with a morphometric evaluation of the density and diameter of the vessels and microfiber diameter was performed. The number of vessels was increased in all groups, as well as the resorption of the scaffold. On day 33, the vascular density in the HCGroup was 42% higher compared to the control group (p = 0.0344). The dose-dependent effect of the pCMV-VEGF165-plasmid was confirmed by enhanced angiogenesis in the HCGroup compared to the LCGroup on day 33 (p-value = 0.0259). We did not find a statistically significant correlation between scaffold degradation rate and vessel growth (the Pearson correlation coefficient was ρ = 0.20, p-value = 0.6134). Functionalization of polycaprolactone by incorporation of the pCMV-VEGF165 plasmid provided improved vascularization within 33 days after implantation, however, vessel growth did not seem to correlate with scaffold degradation rate. Full article
(This article belongs to the Special Issue From Molecules to Tissues: Health, Injury and Disease)
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