Fibroblast Migration Activity Research Articles

In Vitro Antioxidant and Fibroblast Migration Activities of Fractions Eluded from Dichloromethane Leaf Extract of Marantodes pumilum.

(1) The complexity of diabetes and diabetic wound healing remains a therapeutic challenge because proper and systematic wound care and management are essential to prevent chronic microbial infection and mechanical damage to the skin. Marantodes pumilum, locally known as 'Kacip Fatimah', is an herb that has been previously reported to possess anti-inflammatory, analgesic, antinociceptive and antipyretic properties. The current study aims to assess the antioxidant and fibroblast cell migration activities of the fractions eluded from the dichloromethane extract of M. pumilum leaves. (2) The total antioxidant capacity of M. pumilum was assessed using the total proanthocyanidins and phosphomolybdenum assays, while DPPH, nitric oxide, hydrogen peroxide and superoxide free radical scavenging assays were tested to determine the antioxidant potential of M. pumilum. An in vitro scratch wound assay was performed to measure the fibroblast cell migration rate using normal and insulin-resistant human dermal fibroblast cells. (3) All M. pumilum fractions exhibited good antioxidant and fibroblast cell migration activity, among which fractions A and E displayed the greatest effect. (4) M. pumilum's fibroblast migration activity could be attributed to its strong antioxidant properties along with its previously reported properties.

Epidermal growth factor in sacran hydrogel film accelerates fibroblast migration.

Epidermal growth factor (EGF) accelerates epidermal regeneration, and it is widely studied as a wound-healing agent. However, the special carrier for the topical administration of EGF is urgently needed to deliver EGF on the wound site. In a preceding study, sacran hydrogel film (Sac-HF) showed a possible use as a dressing material for wound healing, as well as a good capability as a drug carrier. In the current study, we prepared Sac-HF containing EGF (Sac/EGF-HF) and then characterized their physicochemical properties, including thickness, swelling ratio, degradability, tensile strength, and morphology. In addition, we have also conducted thermal and crystallography studies using differential scanning calorimetry (DSC) and X-ray diffraction, respectively. Furthermore, we investigated the in vitro influence of Sac/EGF-HF on cell migration using a fibroblast cell line. Morphology study confirmed that the casting method used for the film preparation resulted in a homogeneous film of Sac/EGF-HF. Furthermore, EGF significantly increased the thickness, tensile strength, and degradability of Sac/EGF-HF compared to Sac-HF. Sac/EGF-HF had a lower swelling ability compared to Sac-HF; this result corroborated the tensile strength result. Interestingly, X-ray diffraction and DSC results showed that Sac/EGF-HF had an amorphous shape. The in vitro studies revealed that Sac/EGF-HF induced the fibroblast migration activity. These results conclude that Sac/EGF-HF has the potential properties of HF for biomedical applications.

ETHANOLIC EXTRACT OF TITHONIA DIVERSIFOLIA (HEMSLEY) A. GRAY INHIBITS MIGRATION ACTIVITY AND DECREASE THE TRANSFORMING GROWTH FACTOR-BETA1, VEGF EXPRESSION ON KELOID FIBROBLASTS

Objectives: Keloid occurred due to abnormal wound healing, characterized by massive fibroblast proliferation and excessive collagen accumulation. Tithonia diversifolia Hemsley A. Gray has been known to show antiproliferative effect against some cancer cells in vitro. However, its potential as anti-keloid has not been explored. This study aims to assess the T. diversifolia ethanolic extract effect on fibroblast migration activity, transforming growth factor-beta1 (TGF-β1), and vascular endothelial growth factor (VEGF) expression of keloid fibroblasts in vitro.Methods: Fibroblasts were isolated from keloid collected from patient keloid tissue. The migration activity of keloid fibroblasts was assessed using scratch assay. The TGF-β1 and VEGF expression examination was done using ELISA.Results: Ethanolic extract of T. diversifolia treatment at a concentration of 20 μg/ml, 10 μg/ml, and 5 μg/mL for 24 h on keloid fibroblasts culture showed slower migration activity compare to those on keloid fibroblast culture without treatment (p<0.05). The TGF-β1 and VEGF expression was significantly lower in ethanolic extract of T. diversifolia treatment group compared to those on keloid fibroblast without treatment (p<0.05).Conclusion: Ethanolic extract of T. diversifolia inhibits fibroblast migration activity and decrease the expression of VEGF and TGF-β1 on keloid fibroblasts in vitro.

ETHANOLIC EXTRACT OF TITHONIA DIVERSIFOLIA (HEMSLEY) A. GRAY INHIBITS MIGRATION ACTIVITY AND DECREASE THE TRANSFORMING GROWTH FACTOR-BETA1, VEGF EXPRESSION ON KELOID FIBROBLASTS

Objectives: Keloid occurred due to abnormal wound healing, characterized by massive fibroblast proliferation and excessive collagen accumulation. Tithonia diversifolia Hemsley A. Gray has been known to show antiproliferative effect against some cancer cells in vitro. However, its potential as anti-keloid has not been explored. This study aims to assess the T. diversifolia ethanolic extract effect on fibroblast migration activity, transforming growth factor-beta1 (TGF-β1), and vascular endothelial growth factor (VEGF) expression of keloid fibroblasts in vitro.Methods: Fibroblasts were isolated from keloid collected from patient keloid tissue. The migration activity of keloid fibroblasts was assessed using scratch assay. The TGF-β1 and VEGF expression examination was done using ELISA.Results: Ethanolic extract of T. diversifolia treatment at a concentration of 20 μg/ml, 10 μg/ml, and 5 μg/mL for 24 h on keloid fibroblasts culture showed slower migration activity compare to those on keloid fibroblast culture without treatment (p<0.05). The TGF-β1 and VEGF expression was significantly lower in ethanolic extract of T. diversifolia treatment group compared to those on keloid fibroblast without treatment (p<0.05).Conclusion: Ethanolic extract of T. diversifolia inhibits fibroblast migration activity and decrease the expression of VEGF and TGF-β1 on keloid fibroblasts in vitro.

Basic fibroblast growth factor released from fucoidan-modified chitosan/alginate scaffolds for promoting fibroblasts migration

Wound repair process is initiated immediately after injury by releasing a variety of growth factors. It is known that basic fibroblast growth factor (bFGF) promoted fibroblasts migration, proliferation and effective helped skin wound healing. However, the use of bFGF is limited by two drawbacks, which are its short half-life and easily degraded by enzymes. In this study, we fabricate fucoidan-modified chitosan/alginate (F-CS/Alg) scaffold to protect and control release bFGF to regulate fibroblast migration activity. The experimental results show that oversulfated fucoidan was successfully prepared, with 43% sulfation degree. The 43% sulfated fucoidan (F43) exhibited effective DPPH scavenging activity, good biocompatibility and protected bFGF from trypsin degradation. The F43-CS/Alg scaffold could maintain bFGF activity and control its release, reaching 2.52 ng/mL for 10 h releasing. In vitro cell studies demonstrate that F43-CS/Alg scaffold showed a considerable elevation in cell viability and promoted L929 fibroblasts migration efficiently. In brief, bFGF loaded F43-CS/Alg scaffold effectively accelerating fibroblast migration for wound repair and could have a great potential in clinical applications in the future.

Steroidal glycosides from the bulbs of Easter lily (Lilium longiflorum Thunb.) promote dermal fibroblast migration in vitro

Ethnopharmacological relevancePreparations derived from bulbs of various Lilium species have been used to promote the healing of skin abrasions, sores and burns and to aid in healing wounds in Traditional Chinese and Greco-Roman Medicine. Aim of the studyTo evaluate fractionated Easter lily bulb extracts and their steroidal glycosides (1–5) for the promotion of dermal fibroblast migration in vitro, a model for the early events in wound healing. Materials and methodsAn activity-guided screening approach was used by coupling sequential solvent extraction, gel permeation chromatography (GPC), and semi-preparative reverse-phase high performance liquid chromatography (RP-HPLC) with an in vitro dermal fibroblast migration assay. Cytotoxicity was evaluated with methyl thiazole tetrazolium (MTT). To gain insight into the mode of action of the steroidal glycosides, nitric oxide (NO) production, and expression of genes for transforming growth factor beta-1 (TGF-β) and its receptors were evaluated. ResultsFractionated bulb extracts and the two isolated steroidal glycoalkaloids (1) and (2) induced NO production and TGF-β receptor I mRNA expression in fibroblast cell culture. In a cytotoxicity assay, steroidal glycosides (1) and (3) had IC50 values of 8.2 and 8.7µM, but the natural acetylation of the C-6″′ hydroxy of the terminal glucose unit in (2) resulted in a 3-fold decrease in cell cytotoxicity when compared with (1). Results from the dermal fibroblast migration assay revealed that the steroidal glycoalkaloids (1) and (2), and the furostanol saponin (3) promoted fibroblast migration from the range of 23.7±5.7 to 37.7±5.1%, as compared with the control. ConclusionCollectively, our data demonstrate that the steroidal glycosides present in Easter lily bulbs induce, at least in part, the observed dermal fibroblast migration activity of the bulb extracts. This is the first evidence that steroidal glycosides from Lilium longiflorum may potentially play a role in the wound healing process and may provide a scientific basis for the historical use of lily bulbs for this purpose.

English

Oxymatrine, one kind of alkaloids extracted from Sophora flavescens Ait, has been demonstrated to attenuate bleomycin-induced lung fibrosis. The mechanisms of this action are poorly known. This study aimed to use proteomics to provide new insights into the mechanisms of the pharmacological effects. Proteins from murine lung fibroblasts exposed to oxymatrine were separated by two-dimensional electrophoresis. Differentially expressed proteins were identified using mass spectrometry. A two-dimensional cell migration assay was used to study the effects of oxymatrine on fibroblast migration activity. Among these detectable protein spots on the 2-DE gel 9 protein, spots were signii¬cantly altered in oxymatrine treated cells. 5 proteins were successfully identii¬ed. All were down-regulated by oxymatrine. Mass spectrometer analysis indicated that one of these proteins is a metabolic enzyme, while others are related to cytoskeleton or involved in cellular transcription and translation. The attenuated expressions of mRNA and protein of the cytoskeleton-related protein, HSP27, were confirmed by Western blotting and RT-PCR analysis. Besides these, the migration activity of fibroblast was reduced by oxymatrine. It is suggested that regulation of HSP27 expression by oxymatrine is associated with its inhibitory effects on motility of lung fibroblasts, which contributes to the protective action of this drug against lung fibrosis. Key words: Oxymatrine, fibroblasts, proteomics, heat shock protein 27, motility.

Amnion-Derived Cellular Cytokine Solution (ACCS) Promotes Migration of Keratinocytes and Fibroblasts

Amnion-derived Multipotent Progenitor cells appear to be useful as adjuvants in wound healing. Amnion-derived multipotent progenitor cells secrete a unique combination of cytokines and growth factors, known as amnion-derived cellular cytokine solution (ACCS). In the skin, a cytokine communication network between mesenchymal and epithelial cells tightly controls keratinocyte and fibroblast migration, proliferation and differentiation-key determinants of wound healing. To evaluate the influence of ACCS on the migratory behavior of keratinocytes and fibroblasts, cell migration was assayed quantitatively using a Boyden chamber. Chemotactic migration activity of fibroblasts or keratinocytes through the membrane determined the influence of ACCS. In the presence of ACCS, fibroblasts and keratinocytes demonstrated a statistically significant (P < 0.05) increase in migration when compared with controls. These cell types, critical to normal wound healing, may be influenced to accelerate migration in wounds, thus accelerating wound repair/healing.

Malotilate reduces collagen synthesis and cell migration activity of fibroblasts in vitro

Diisopropyl-1,3-dithiol-2-ylidenemalonate (malotilate) was studied for and compared with cyanidanol, hydrocortisone and colchicin on its impact on fibroblast cultures. Under in vitro conditions, malotilate specifically reduces collagen synthesis of fibroblasts. In addition, malotilate is an efficient inhibitor of fibroblast migration as tested by a chemotaxis assay in a modified Boyden chamber. Our data may support the notion that malotilate is of potential interest for interfering with fibrotic processes.