scholarly journals Adipose derived stem cells (ASC) in wound healing: Recent results in vitro and in vivo

2013 ◽  
Vol 1 (1) ◽  
Author(s):  
C Fromm-Dornieden ◽  
P Koenen
Keyword(s):  
Stem Cells ◽  
Wound Healing ◽  
Adipose Derived Stem Cells

scholarly journals Patterned Polyvinyl Alcohol Hydrogel Dressings with Stem Cells Seeded for Wound Healing

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 171 ◽  
Author(s):  
Tianlin Gao ◽  
Menghui Jiang ◽  
Xiaoqian Liu ◽  
Guoju You ◽  
Wenyu Wang ◽  
...  
Keyword(s):  
Stem Cells ◽  
Wound Healing ◽  
Polyvinyl Alcohol ◽  
Adipose Derived Stem Cells ◽  
In Vivo Experiments ◽  
Cell Counts ◽  
Surface Modified ◽  
Testing Instruments

Polyvinyl alcohol (PVA) hydrogel and stem cell therapy have been widely used in wound healing. However, the lack of bioactivity for PVA and security of stem therapy limited their application. In this study, an adipose-derived stem cells (ADSCs)-seeded PVA dressing (ADSCs/PVA) was prepared for wound healing. One side of the PVA dressing was modified with photo-reactive gelatin (Az-Gel) via ultraviolet (UV) irradiation (Az-Gel@PVA), and thus ADSCs could adhere, proliferate on the PVA dressings and keep the other side of the dressings without adhering to the wound. The structure and mechanics of Az-Gel@PVA were determined by scanning electron microscopy (SEM) and material testing instruments. Then, the adhesion and proliferation of ADSCs were observed via cell counts and live-dead staining. Finally, in vitro and in vivo experiments were utilized to confirm the effect of ADSCs/PVA dressing for wound healing. The results showed that Az-Gel was immobilized on the PVA and showed little effect on the mechanical properties of PVA hydrogels. The surface-modified PVA could facilitate ADSCs adhesion and proliferation. Protein released tests indicated that the bioactive factors secreted from ADSCs could penetrated to the wound. Finally, in vitro and in vivo experiments both suggested the ADSCs/PVA could promote the wound healing via secreting bioactive factors from ADSCs. It was speculated that the ADSCs/PVA dressing could not only promote the wound healing, but also provide a new way for the safe application of stem cells, which would be of great potential for skin tissue engineering.

Evaluating the Effect of Integra Seeded with Adipose Tissue-Derived Stem Cells or Fibroblasts in Wound Healing

2020 ◽  
Vol 17 (7) ◽  
pp. 629-635
Author(s):  
Yuchang Wang ◽  
Quanrui Feng ◽  
Zhanfei Li ◽  
Xiangjun Bai ◽  
Yiping Wu ◽  
...  
Keyword(s):  
Stem Cells ◽  
Wound Healing ◽  
Adipose Tissue ◽  
Skin Necrosis ◽  
Burn Patients ◽  
Adipose Derived Stem Cells ◽  
Bioengineered Skin

Background: Extensive loss of skin in burn patients can have devastating consequences, both physically and mentally. Adipose-Derived Stem Cells (ADSCs) and fibroblasts are known to play significant roles in the process of wound healing. Recently, bioengineered skin has been considered for wound healing purposes. Methods: Investigate the effect of Integra seeded with ADSCs, fibroblasts, or both on wound healing. Results: We found that when Integra is seeded with ADSCs and fibroblasts, both types of cells incorporate and proliferate, the phenomenon becoming more robust when the cells are co-cultured on Integra, both in vitro and in vivo. In addition, when these cells are seeded on Integra, they stimulate epithelization with no signs of inflammation and skin necrosis being observed when transplanted on animals for 7 days. Conclusion: ADSCs and fibroblasts seeded on Integra could decrease the number of α-SMA positive myofibroblasts, leading to scarless wound healing. The evidence from this study is strongly supportive that Integra seeded with ADSCs and fibroblasts is an appropriate and effective bioengineered skin for wound healing.

Abstract 209: Human Umbilical Vein Endothelial Cell Conditioned Medium in the Presence of High Glucose Increases in vitro Adipose-derived Stem Cells Proliferation and in vivo Vascularization

2016 ◽  
Vol 36 (suppl_1) ◽  
Author(s):  
Spencer Brown ◽  
Francis Caputo ◽  
Marc Fromer ◽  
Ping Zhang ◽  
Shauhoa Chang ◽  
...  
Keyword(s):  
Stem Cells ◽  
Wound Healing ◽  
Endothelial Cell ◽  
High Glucose ◽  
Umbilical Vein ◽  
Adipose Derived Stem Cells ◽  
Diabetic Mice ◽  
Human Umbilical Vein

Background: Diabetes type 1 and 2 cause hyperglycemia and result in endothelial dysfunction with endothelial vessel and poor wound healing. Adipose-derived stem cells (ASCs), progenitor cells in wound healing, show decreased function under hyperglycemic conditions in vitro and in vivo . We hypothesized that exposing ASCs in the presence of high glucose with the human umbilical vein endothelial cell (HUVEC) secretome will reverse the deleterious effects of glucose on ASCs and subsequently enhance angiogenesis and wound healing. Methods: Human umbilical vein endothelial cells (HUVEC) were treated with glucose (30mM) and the conditioned media (CM) were collected every 3 days. ASCs were then co-cultured with EC/CM for 2 weeks. To produce thermal denaturation of protein, EC/CM was heated at 95 0 C for 30 mins. Cell activity, proliferation, and endothelial-like properties of ASCs were determined by MTT assays, growth curves, and real-time RT-PCR, respectively. EC/CM treated ASC were injected into a normal or diabetic murine left thigh muscle at three different points with hindlimb ischemia. After 4 weeks injection, animals were sacrificed. H & E and double immunostaining for CD31 and anti-human nuclei were used to determine if the ASCs primed with EC/CM underwent neovascularization. Results: In fact, ASCs increased in proliferation when co-cultured with HUVEC/CM (1.4 fold) when compared with controls. This promoting effect was lost in heated HUVEC/CM, indicating that the active molecules are of protein origin. After 10 days stimulated with EC/CM an increase in mRNA expression levels of EC markers were also observed in high glucose (30mM) EC/CM environment including CD31 (2-fold), vWF (1.1-fold), and eNOS (3.2-fold) when compared to ASCs cultured in M199. H & E and immunohistochemical staining results showed elevated vessel density and CD31 + cell levels in HUVEC-primed ASC injection sites of diabetic mice when compared with the control animals. Conclusions: HUVEC secrete protein factors that increase proliferation and endothelial differentiation of ASCs under diabetic conditions. Injection of ischemic hindlimbs in diabetic mice with HUVEC-primed ASCs leads to improved angiogenesis.

scholarly journals Stamina-Enhancing Effects of Human Adipose-Derived Stem Cells

2021 ◽  
Vol 30 ◽  
pp. 096368972110354
Author(s):  
Eun-Jung Yoon ◽  
Hye Rim Seong ◽  
Jangbeen Kyung ◽  
Dajeong Kim ◽  
Sangryong Park ◽  
...  
Keyword(s):  
Physical Activity ◽  
Stem Cells ◽  
Locomotor Activity ◽  
Tissue Injury ◽  
Male Rats ◽  
Adipose Derived Stem Cells ◽  
Sprague Dawley ◽  
Serum Triglycerides

Stamina-enhancing effects of human adipose derived stem cells (hADSCs) were investigated in young Sprague-Dawley rats. Ten-day-old male rats were transplanted intravenously (IV) or intracerebroventricularly (ICV) with hADSCs (1 × 106 cells/rat), and physical activity was measured by locomotor activity and rota-rod performance at post-natal day (PND) 14, 20, 30, and 40, as well as a forced swimming test at PND 41. hADSCs injection increased the moving time in locomotor activity, the latency in rota-rod performance, and the maximum swimming time. For the improvement of physical activity, ICV transplantation was superior to IV injection. In biochemical analyses, ICV transplantation of hADSCs markedly reduced serum creatine phosphokinase, lactate dehydrogenase, alanine transaminase, and muscular lipid peroxidation, the markers for muscular and hepatic injuries, despite the reduction in muscular glycogen and serum triglycerides as energy sources. Notably, hADSCs secreted brain-derived neurotrophic factor (BDNF) and nerve growth factor in vitro, and increased the level of BDNF in the brain and muscles in vivo. The results indicate that hADSCs enhance physical activity including stamina not only by attenuating tissue injury, but also by strengthening the muscles via production of BDNF.

Extracellular vesicles derived from adipose-derived stem cells accelerate diabetic wound healing by suppressing the expression of matrix metalloproteinase-9

2021 ◽  
Vol 22 ◽  
Author(s):  
Jiang-wen Wang ◽  
Yuan-zheng Zhu ◽  
Xuan Hu ◽  
Jia-ying Nie ◽  
Zhao-hui Wang ◽  
...  
Keyword(s):  
Stem Cells ◽  
Wound Healing ◽  
Mouse Model ◽  
Adipose Derived Stem Cells ◽  
Collagen Deposition ◽  
Diabetic Wound ◽  
Diabetic Wound Healing ◽  
Diabetic Wounds ◽  
Metalloproteinase 9

Background: The healing of diabetic wounds is poor due to a collagen deposition disorder. Matrix metalloproteinase-9 (MMP-9) is closely related to collagen deposition in the process of tissue repair. Many studies have demonstrated that extracellular vesicles derived from adipose-derived stem cells (ADSC-EVs) promote diabetic wound healing by enhancing collagen deposition. Objective: In this study, we explored if ADSC-EVs could downregulate the expression of MMP-9 in diabetic wounds and promote wound healing by improving collagen deposition. The potential effects of ADSC-EVs on MMP-9 and diabetic wound healing were tested both in vitro and in vivo. Methods: We first evaluated the effect of ADSC-EVs on the proliferation and MMP-9 secretion of HaCaT cells treated with advanced glycation end product-bovine serum albumin (AGE-BSA), using CCK-8 western blot and MMP-9 enzyme-linked immunosorbent assay(ELISA). Next, the effect of ADSC-EVs on the healing, re-epithelialisation, collagen deposition, and MMP-9 concentration in diabetic wound fluids was evaluated in an immunodeficient mouse model via MMP-9 ELISA and haematoxylin and eosin, Masson’s trichrome, and immunofluorescence staining for MMP-9. Results: In vitro, ADSC-EVs promoted the proliferation and MMP-9 secretion of HaCaT cells.In vivo, ADSC-EVs accelerated diabetic wound healing by improving re-epithelialisation and collagen deposition and by inhibiting the expression of MMP-9. Conclusion: ADSC-EVs possessed the healing of diabetic wounds in a mouse model by inhibiting downregulating MMP-9 and improving collagen deposition.Thus ,ADSC-EVs are a promising candidate for the treatment of diabetic wounds .

scholarly journals High glucose induces early senescence in adipose-derived stem cells by accelerating p16 and mTOR

2019 ◽  
Vol 6 (6) ◽  
pp. 3213-3221
Author(s):  
Hieu Liem Pham ◽  
Phuc Van Pham
Keyword(s):  
Stem Cells ◽  
High Glucose ◽  
Glucose Concentration ◽  
Culture Medium ◽  
Diabetic Patients ◽  
Adipose Derived Stem Cells ◽  
Differentiation Potential ◽  
Normal Glucose

Introduction: The senescence of stem cells is the primary reason that causes aging of stem cell-containing tissues. Some hypotheses have suggested that high glucose concentration in diabetic patients is the main factor that causes senescence of cells in those patients. This study aimed to evaluate the effects of high glucose concentrations on the senescence of adipose-derived stem cells (ADSCs). Methods: ADSCs were isolated and expanded from human adipose tissues. They were characterized and confirmed as mesenchymal stem cells (MSCs) by expression of surface markers, their shape, and in vitro differentiation potential. They were then cultured in 3 different media- that contained 17.5 mM, 35 mM, or 55 mM of D-glucose. The senescent status of ADSCs was recorded by the expression of the enzyme beta-galactosidase, cell proliferation, and doubling time. Real-time RT-PCR was used to evaluate the expression of p16, p21, p53 and mTOR. Results: The results showed that high glucose concentrations (35 mM and 55 mM) in the culture medium induced senescence of human ADSCs. The ADSCs could progress to the senescent status quicker than those cultured in the lower glucose-containing medium (17.5 mM). The senescent state was related to the up-regulation of p16 and mTOR genes. Conclusion: These results suggest that high glucose in culture medium can trigger the expression of p16 and mTOR genes which cause early senescence in ADSCs. Therefore, ADSCs should be cultured in low glucose culture medium, or normal glucose concentration, to extend their life in vitro as well as in vivo.  

Can Activated Platelet Rich Plasma Combined with Adipose-Derived Stem Cells Be Used to Treat Skin Wrinkles?

2013 ◽  
pp. 313-329
Author(s):  
Phuc Van Pham ◽  
Loan Thi-Tung Dang ◽  
Nhung Hai Truong ◽  
Ngoc Kim Phan
Keyword(s):  
Stem Cells ◽  
Platelet Rich Plasma ◽  
Adipose Derived Stem Cells ◽  
Fibroblast Proliferation ◽  
Skin Rejuvenation ◽  
Collagen Production ◽  
Dermal Layer ◽  
Skin Wrinkles

In recent years, Platelet Rich Plasma (PRP) and Adipose-Derived Stem Cells (ADSCs) have been used separately for many clinical applications, especially skin rejuvenation. A combined injection of PRP and ADSCs could therefore be used to treat skin wrinkles. However, there are controversies and reports with conflicting results regarding the efficacy of this treatment. The authors aimed to determine the anti-wrinkle and skin rejuvenation mechanism of combined PRP and ADSCs treatment. The effects of PRP and ADSCs isolated from the same consenting donors were evaluated using in vitro and in vivo models. The in vitro effects of PRP and ADSCs on dermal fibroblast proliferation, collagen production, and inhibition of Matrix Metalloproteinase-1 (MMP-1) production were investigated using a co-culture model. Fibroblasts and ADSCs were cultured within the same dish, but in two separate cavities (using an insert plate), in the presence of the same PRP-supplemented medium. In vivo, the authors evaluated the effects of combined PRP and ADSCs on skin histochemistry, including changes in the dermal layer and collagen production in photo-aged skin (mice). They also determined the survival and differentiation of grafted ADSCs. The results show that combined PRP and ADSCs strongly stimulate in vitro fibroblast proliferation, collagen production, and inhibition of MMP-1 synthesis. Intra-dermal co-injection of PRP and ADSCs was observed to stimulate increased dermal layer thickness and collagen production compared with the untreated group. These results indicate that a combined PRP and ADSC injection can reduce wrinkles more effectively than either PRP or ADSC alone, and provide insight into the clinical use of PRP combined with ADSCs for dermal applications, particularly skin rejuvenation.

scholarly journals Adipose-Derived Stem Cells Reduce Lipopolysaccharide-Induced Myelin Degradation and Neuroinflammatory Responses of Glial Cells in Mice

2020 ◽  
Vol 10 (3) ◽  
pp. 66
Author(s):  
Kateryna Yatsenko ◽  
Iryna Lushnikova ◽  
Alina Ustymenko ◽  
Maryna Patseva ◽  
Iryna Govbakh ◽  
...  
Keyword(s):  
Stem Cells ◽  
Personalized Medicine ◽  
Neurodegenerative Diseases ◽  
Brain Slices ◽  
Brain Inflammation ◽  
Patient Specific ◽  
Adipose Derived Stem Cells ◽  
Humoral Factors

Brain inflammation is a key event triggering the pathological process associated with many neurodegenerative diseases. Current personalized medicine and translational research in neurodegenerative diseases focus on adipose-derived stem cells (ASCs), because they are patient-specific, thereby reducing the risk of immune rejection. ASCs have been shown to exert a therapeutic effect following transplantation in animal models of neuroinflammation. However, the mechanisms by which transplanted ASCs promote cell survival and/or functional recovery are not fully understood. We investigated the effects of ASCs in in vivo and in vitro lipopolysaccharide (LPS)-induced neuroinflammatory models. Brain damage was evaluated immunohistochemically using specific antibody markers of microglia, astroglia and oligodendrocytes. ASCs were used for intracerebral transplantation, as well as for non-contact co-culture with brain slices. In both in vivo and in vitro models, we found that LPS caused micro- and astroglial activation and oligodendrocyte degradation, whereas the presence of ASCs significantly reduced the damaging effects. It should be noted that the observed ASCs protection in a non-contact co-culture suggested that this effect was due to humoral factors via ASC-released biomodulatory molecules. However, further clinical studies are required to establish the therapeutic mechanisms of ASCs, and optimize their use as a part of a personalized medicine strategy.

scholarly journals Platelet-Rich Plasma Improves the Wound Healing Potential of Mesenchymal Stem Cells through Paracrine and Metabolism Alterations

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
Barbara Hersant ◽  
Mounia Sid-Ahmed ◽  
Laura Braud ◽  
Maud Jourdan ◽  
Yasmine Baba-Amer ◽  
...  
Keyword(s):  
Stem Cells ◽  
Wound Healing ◽  
Mesenchymal Stem Cells ◽  
Platelet Rich Plasma ◽  
Public Health Problem ◽  
Major Public Health Problem ◽  
Dependent Manner ◽  
Safe Alternative

Chronic and acute nonhealing wounds represent a major public health problem, and replacement of cutaneous lesions by the newly regenerated skin is challenging. Mesenchymal stem cells (MSC) and platelet-rich plasma (PRP) were separately tested in the attempt to regenerate the lost skin. However, these treatments often remained inefficient to achieve complete wound healing. Additional studies suggested that PRP could be used in combination with MSC to improve the cell therapy efficacy for tissue repair. However, systematic studies related to the effects of PRP on MSC properties and their ability to rebuild skin barrier are lacking. We evaluated in a mouse exhibiting 4 full-thickness wounds, the skin repair ability of a treatment combining human adipose-derived MSC and human PRP by comparison to treatment with saline solution, PRP alone, or MSC alone. Wound healing in these animals was measured at day 3, day 7, and day 10. In addition, we examined in vitro and in vivo whether PRP alters in MSC their proangiogenic properties, their survival, and their proliferation. We showed that PRP improved the efficacy of engrafted MSC to replace lost skin in mice by accelerating the wound healing processes and ameliorating the elasticity of the newly regenerated skin. In addition, we found that PRP treatment stimulated in vitro, in a dose-dependent manner, the proangiogenic potential of MSC through enhanced secretion of soluble factors like VEGF and SDF-1. Moreover, PRP treatment ameliorated the survival and activated the proliferation of in vitro cultured MSC and that these effects were accompanied by an alteration of the MSC energetic metabolism including oxygen consumption rate and mitochondrial ATP production. Similar observations were found in vivo following combined administration of PRP and MSC into mouse wounds. In conclusion, our study strengthens that the use of PRP in combination with MSC might be a safe alternative to aid wound healing.

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