Enhancing Cell Migration in Collagen Gels by Modulating Collagen Adhesivity

2008 ◽  
Author(s):  
Gary A. Monteiro ◽  
Harini G. Sundararaghavan ◽  
Anthony V. Fernandes ◽  
David I. Shreiber
Keyword(s):  
Wound Healing ◽  
Cell Migration ◽  
Collagen Gels ◽  
Structural Framework ◽  
Tissue Equivalents ◽  
Physiological Relevance ◽  
A Cell ◽  
Tractional Forces ◽  
Regenerative Therapies

The organized movement of cells is critical during tissue morphogenesis and wound healing. While different tissue cells use distinct mechanisms for migration, the underlying biophysical balance of adhesive and tractional forces for effective migration is similar. The extracellular matrix provides the structural framework through which a cell can migrate. In particular, collagen is an abundant and ubiquitous ECM protein that supports cell migration. The excellent biocompatibility and physiological relevance of collagen have made it a primary material for tissue engineered regenerative therapies and in vitro studies with tissue equivalents.

scholarly journals Promotion of Keratinocyte Proliferation by Tracheloside through ERK1/2 Stimulation

2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
JaeGoo Kim ◽  
Yu-Kyong Shin ◽  
Ki-Young Kim
Keyword(s):  
Wound Healing ◽  
Cell Migration ◽  
Positive Control ◽  
Skin Injury ◽  
Scratch Assay ◽  
Keratinocyte Proliferation ◽  
Promote Cell Migration ◽  
A Cell ◽  
Cell Migration And Proliferation

Cell migration and proliferation are important for proper wound healing after skin injury. Recent studies have shown that compounds from plants could promote cell migration and proliferation. Tracheloside, which is a plant lignan, has been found to promote the growth of HaCaT cells over 40% compared to other compounds tested based on a cell proliferation assay. An in vitro scratch assay confirmed the healing activity of tracheloside (more than 2-fold increased healing activity after 24 hours of treatment compared with the control) and revealed that this activity is better than that of allantoin (1.2-fold increased after 24 hours of treatment compared with the control), a positive control. With western blot results, wound healing with tracheloside occurred through the phosphorylation of ERK1/2. Therefore, tracheloside is a good candidate to promote wound healing and could be developed as a therapeutic agent for wound treatment or used as a leading compound with higher activity.

A Method for Quantitative Analysis of the Kinematics of Fibroblast Migration in a Monolayer Wound Model

2011 ◽  
Author(s):  
Gil Topman ◽  
Orna Sharabani-Yosef ◽  
Amit Gefen
Keyword(s):  
Wound Healing ◽  
Cell Migration ◽  
Wound Healing Assay ◽  
Complete Coverage ◽  
Time Intervals ◽  
Fibroblast Migration ◽  
Wound Model ◽  
Regular Time

A wound healing assay is simple but effective method to study cell migration in vitro. Cell migration in vitro was found to mimic migration in vivo to some extent [1,2]. In wound healing assays, a “wound” is created by either scraping or mechanically crushing cells in a monolayer, thereby forming a denuded area. Cells migrate into the denuded area to complete coverage, and thereby “heal” the wound. Micrographs at regular time intervals are captured during such experiments for analysis of the process of migration.

scholarly journals Role of Berry Anthocyanins and Phenolic Acids on Cell Migration and Angiogenesis: An Updated Overview

Nutrients ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 1075 ◽  
Author(s):  
Panagiotis Tsakiroglou ◽  
Natalie E. VandenAkker ◽  
Cristian Del Bo’ ◽  
Patrizia Riso ◽  
Dorothy Klimis-Zacas
Keyword(s):  
Wound Healing ◽  
Cell Migration ◽  
Phenolic Acids ◽  
Rho Gtpase ◽  
Small Gtpases ◽  
Endothelial Cell Migration ◽  
Berry Extracts

Cell migration is a critical process that is highly involved with normal and pathological conditions such as angiogenesis and wound healing. Important members of the RHO GTPase family are capable of controlling cytoskeleton conformation and altering motility characteristics of cells. There is a well-known relationship between small GTPases and the PI3K/AKT pathway. Endothelial cell migration can lead to angiogenesis, which is highly linked to wound healing processes. Phenolics, flavonoids, and anthocyanins are major groups of phytochemicals and are abundant in many natural products. Their antioxidant, antimicrobial, anti-inflammatory, antidiabetic, angiogenenic, neuroprotective, hepatoprotective, and cardioprotective properties have been extensively documented. This comprehensive review focuses on the in vitro and in vivo role of berry extracts and single anthocyanin and phenolic acid compounds on cell migration and angiogenesis. We aim to summarize the most recent published studies focusing on the experimental model, type of berry extract, source, dose/concentration and overall effect(s) of berry extracts, anthocyanins, and phenolic acids on the above processes.

scholarly journals Extracellular Signal-Regulated Kinase/Mitogen-Activated Protein Kinase Regulates Actin Organization and Cell Motility by Phosphorylating the Actin Cross-Linking Protein EPLIN

2007 ◽  
Vol 27 (23) ◽  
pp. 8190-8204 ◽  
Author(s):  
Mei-Ying Han ◽  
Hidetaka Kosako ◽  
Toshiki Watanabe ◽  
Seisuke Hattori
Keyword(s):  
Wound Healing ◽  
Cell Migration ◽  
Cell Motility ◽  
Stress Fiber ◽  
Mitogen Activated Protein Kinase ◽  
Cross Linking ◽  
Intact Cells ◽  
Extracellular Signal Regulated Kinase ◽  
Extracellular Signal

ABSTRACT Extracellular signal-regulated kinase (ERK) is important for various cellular processes, including cell migration. However, the detailed molecular mechanism by which ERK promotes cell motility remains elusive. Here we characterize epithelial protein lost in neoplasm (EPLIN), an F-actin cross-linking protein, as a novel substrate for ERK. ERK phosphorylates Ser360, Ser602, and Ser692 on EPLIN in vitro and in intact cells. Phosphorylation of the C-terminal region of EPLIN reduces its affinity for actin filaments. EPLIN colocalizes with actin stress fibers in quiescent cells, and stimulation with platelet-derived growth factor (PDGF) induces stress fiber disassembly and relocalization of EPLIN to peripheral and dorsal ruffles, wherein phosphorylation of Ser360 and Ser602 is observed. Phosphorylation of these two residues is also evident during wound healing at the leading edge of migrating cells. Moreover, expression of a non-ERK-phosphorylatable mutant, but not wild-type EPLIN, prevents PDGF-induced stress fiber disassembly and membrane ruffling and also inhibits wound healing and PDGF-induced cell migration. We propose that ERK-mediated phosphorylation of EPLIN contributes to actin filament reorganization and enhanced cell motility.

IL-6/STAT3/TFF3 signaling regulates human biliary epithelial cell migration and wound healing in vitro

2010 ◽  
Vol 37 (8) ◽  
pp. 3813-3818 ◽  
Author(s):  
Gui-xing Jiang ◽  
Xiang-yu Zhong ◽  
Yun-fu Cui ◽  
Wei Liu ◽  
Sheng Tai ◽  
...  
Keyword(s):  
Wound Healing ◽  
Cell Migration ◽  
Epithelial Cell ◽  
Biliary Epithelial Cell ◽  
Epithelial Cell Migration

scholarly journals A Novel In Vitro Wound Healing Assay to Evaluate Cell Migration

10.3791/56825 ◽  
2018 ◽  
Author(s):  
Floriana Cappiello ◽  
Bruno Casciaro ◽  
Maria Luisa Mangoni
Keyword(s):  
Wound Healing ◽  
Cell Migration ◽  
Wound Healing Assay

scholarly journals Human Keratinocyte Growth and Differentiation on Acellular Porcine Dermal Matrix in relation to Wound Healing Potential

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Robert Zajicek ◽  
Vaclav Mandys ◽  
Ondrej Mestak ◽  
Jan Sevcik ◽  
Radana Königova ◽  
...  
Keyword(s):  
Wound Healing ◽  
Human Keratinocytes ◽  
Dermal Matrix ◽  
Keratinocyte Proliferation ◽  
Proliferation And Differentiation ◽  
A Cell ◽  
Cell Culture Assay ◽  
Air Liquid Interface

A number of implantable biomaterials derived from animal tissues are now used in modern surgery. Xe-Derma is a dry, sterile, acellular porcine dermis. It has a remarkable healing effect on burns and other wounds. Our hypothesis was that the natural biological structure of Xe-Derma plays an important role in keratinocyte proliferation and formation of epidermal architecturein vitroas well asin vivo. The bioactivity of Xe-Derma was studied by a cell culture assay. We analyzed growth and differentiation of human keratinocytes culturedin vitroon Xe-Derma, and we compared the results with formation of neoepidermis in the deep dermal wounds treated with Xe-Derma. Keratinocytes cultured on Xe-Derma submerged in the culture medium achieved confluence in 7–10 days. After lifting the cultures to the air-liquid interface, the keratinocytes were stratified and differentiated within one week, forming an epidermis with basal, spinous, granular, and stratum corneum layers. Immunohistochemical detection of high-molecular weight cytokeratins (HMW CKs), CD29, p63, and involucrin confirmed the similarity of organization and differentiation of the cultured epidermal cells to the normal epidermis. The results suggest that the firm natural structure of Xe-Derma stimulates proliferation and differentiation of human primary keratinocytes and by this way improves wound healing.

Mechanical and Biochemical Comparison of Cell-Derived Matrix, Collagen Gels, and Fibrin Gels for Tissue Engineering Applications

2007 ◽  
Author(s):  
Jan-Eric W. Ahlfors ◽  
Kristen L. Billiar
Keyword(s):  
Tissue Engineering ◽  
Connective Tissue ◽  
Living Tissue ◽  
Collagen Gels ◽  
Engineering Applications ◽  
Major Drawback ◽  
Fibrin Gels ◽  
Tissue Equivalents ◽  
Biochemical Comparison

Cell-seeded collagen and fibrin gels have been used extensively as in vitro wound healing models and for studying tissue remodeling. The have also been utilized as replacements for lost or damaged connective tissue [1]. The major drawback of these gel-based living tissue equivalents (LTEs) for tissue engineering applications is that they are not completely synthesized and arranged by the cells themselves, thus they are weak relative to native connective tissue.

scholarly journals Activator Protein-1 Transcriptional Activity Drives Soluble Micrograft-Mediated Cell Migration and Promotes the Matrix Remodeling Machinery

2019 ◽  
Vol 2019 ◽  
pp. 1-19 ◽  
Author(s):  
Martina Balli ◽  
Jonathan Sai-Hong Chui ◽  
Paraskevi Athanasouli ◽  
Willy Antoni Abreu de Oliveira ◽  
Youssef El Laithy ◽  
...  
Keyword(s):  
Wound Healing ◽  
Cell Migration ◽  
Wound Repair ◽  
Molecular Mechanisms ◽  
Cell Model ◽  
Matrix Remodeling ◽  
Activator Protein 1 ◽  
Impaired Wound Healing ◽  
Beneficial Effects

Impaired wound healing and tissue regeneration have severe consequences on the patient’s quality of life. Micrograft therapies are emerging as promising and affordable alternatives to improve skin regeneration by enhancing the endogenous wound repair processes. However, the molecular mechanisms underpinning the beneficial effects of the micrograft treatments remain largely unknown. In this study, we identified the active protein-1 (AP-1) member Fos-related antigen-1 (Fra-1) to play a central role in the extracellular signal-regulated kinase- (ERK-) mediated enhanced cell migratory capacity of soluble micrograft-treated mouse adult fibroblasts and in the human keratinocyte cell model. Accordingly, we show that increased micrograft-dependent in vitro cell migration and matrix metalloprotease activity is abolished upon inhibition of AP-1. Furthermore, soluble micrograft treatment leads to increased expression and posttranslational phosphorylation of Fra-1 and c-Jun, resulting in the upregulation of wound healing-associated genes mainly involved in the regulation of cell migration. Collectively, our work provides insights into the molecular mechanisms behind the cell-free micrograft treatment, which might contribute to future advances in wound repair therapies.

scholarly journals Effects of fibrin-binding oligopeptide derived from fibronectin on osteoblast-like cell migration in in vitro wound healing model

2018 ◽  
Vol 29 ◽  
pp. 122-122
Author(s):  
Yoojin Hong ◽  
Sung Tae Kim ◽  
Ki-Tae Koo ◽  
Yang-Jo Seol ◽  
Yong-Moo Lee ◽  
...  
Keyword(s):  
Wound Healing ◽  
Cell Migration ◽  
Wound Healing Model ◽  
Healing Model
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