scholarly journals Constant expression of hexose-6-phosphate dehydrogenase during differentiation of human adipose-derived mesenchymal stem cells

2008 ◽  
Vol 41 (3) ◽  
pp. 125-133 ◽  
Author(s):  
Silvia Senesi ◽  
Paola Marcolongo ◽  
Ivana Manini ◽  
Rosella Fulceri ◽  
Vincenzo Sorrentino ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Reductase Activity ◽  
Cell Types ◽  
Hydroxysteroid Dehydrogenase ◽  
Endoplasmic Reticulum Membrane ◽  
Adipose Derived Stem Cells ◽  
Protein Levels ◽  
Constant Expression

The reductase activity of 11β-hydroxysteroid dehydrogenase type 1 (HSD11B1) plays an important role in the growth and differentiation of adipose tissue via the prereceptorial activation of glucocorticoids. This enzyme colocalizes with hexose-6-phosphate dehydrogenase (H6PD) at the luminal surface of the endoplasmic reticulum membrane, and the latter enzyme provides NADPH to the former, which can thus act as an 11β-reductase. It was suggested that, during adipogenesis, the increased expression of H6PD causes a dehydrogenase-to-reductase switch in the activity of HSD11B1. However, only the expression of the HSD11B1 has been extensively studied, and little is known about the expression of H6PD. Here, we investigated the expression and the activity of H6PD in the course of the differentiation of human adipose-derived mesenchymal stem cells (ADMSCs) and murine 3T3-L1 cells. It was found that H6PD is already present in adipose-derived stem cells and in 3T3-L1 fibroblasts even before the induction of adipogenesis. Moreover, mRNA and protein levels, as well as the microsomal H6PD activities remained unchanged during the differentiation. At the same time a great induction of HSD11B1 was observed in both cell types. The observed constant expression of H6PD suggests that HSD11B1 acts as a reductase throughout the adipogenesis process in human ADMSCs and murine 3T3-L1 cells.

scholarly journals Preadipocyte 11β-Hydroxysteroid Dehydrogenase Type 1 Is a Keto-Reductase and Contributes to Diet-Induced Visceral Obesity in Vivo

Endocrinology ◽  
2008 ◽  
Vol 149 (4) ◽  
pp. 1861-1868 ◽  
Author(s):  
R. A. De Sousa Peixoto ◽  
S. Turban ◽  
J. H. Battle ◽  
K. E. Chapman ◽  
J. R. Seckl ◽  
...  
Keyword(s):  
Visceral Fat ◽  
Reductase Activity ◽  
Visceral Obesity ◽  
Hydroxysteroid Dehydrogenase ◽  
Activity Levels ◽  
Preadipocyte Differentiation ◽  
Visceral Fat Accumulation ◽  
Protein Levels

Glucocorticoid excess promotes visceral obesity and cardiovascular disease. Similar features are found in the highly prevalent metabolic syndrome in the absence of high levels of systemic cortisol. Although elevated activity of the glucocorticoid-amplifying enzyme 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) within adipocytes might explain this paradox, the potential role of 11β-HSD1 in preadipocytes is less clear; human omental adipose stromal vascular (ASV) cells exhibit 11β-dehydrogenase activity (inactivation of glucocorticoids) probably due to the absence of cofactor provision by hexose-6-phosphate dehydrogenase. To clarify the depot-specific impact of 11β-HSD1, we assessed whether preadipocytes in ASV from mesenteric (as a representative of visceral adipose tissue) and sc tissue displayed 11β-HSD1 activity in mice. 11β-HSD1 was highly expressed in freshly isolated ASV cells, predominantly in preadipocytes. 11β-HSD1 mRNA and protein levels were comparable between ASV and adipocyte fractions in both depots. 11β-HSD1 was an 11β-reductase, thus reactivating glucocorticoids in ASV cells, consistent with hexose-6-phosphate dehydrogenase mRNA expression. Unexpectedly, glucocorticoid reactivation was higher in intact mesenteric ASV cells despite a lower expression of 11β-HSD1 mRNA and protein (homogenate activity) levels than sc ASV cells. This suggests a novel depot-specific control over 11β-HSD1 enzyme activity. In vivo, high-fat diet-induced obesity was accompanied by increased visceral fat preadipocyte differentiation in wild-type but not 11β-HSD1−/− mice. The results suggest that 11β-HSD1 reductase activity is augmented in mouse mesenteric preadipocytes where it promotes preadipocyte differentiation and contributes to visceral fat accumulation in obesity.

scholarly journals Differentiation of Human Adipose Derived Stem Cells into Smooth Muscle Cells Is Modulated by CaMKIIγ

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Kaisaier Aji ◽  
Munila Maimaijiang ◽  
Abudusaimi Aimaiti ◽  
Mulati Rexiati ◽  
Baihetiya Azhati ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Smooth Muscle ◽  
Protein Kinase ◽  
Adipose Derived Stem Cells ◽  
Dependent Protein Kinase ◽  
Protein Levels ◽  
Adult Mesenchymal Stem Cells ◽  
Dependent Protein ◽  
Muscle Contractile

The multifunctional Ca2+/calmodulin-dependent protein kinase II (CaMKII) is known to participate in maintenance and switches of smooth muscle cell (SMC) phenotypes. However, which isoform of CaMKII is involved in differentiation of adult mesenchymal stem cells into contractile SMCs remains unclear. In the present study, we detectedγisoform of CaMKII in differentiation of human adipose derived stem cells (hASCs) into SMCs that resulted from treatment with TGF-β1 and BMP4 in combination for 7 days. The results showed that CaMKIIγincreased gradually during differentiation of hASCs as determined by real-time PCR and western blot analysis. The siRNA-mediated knockdown of CaMKIIγdecreased the protein levels and transcriptional levels of smooth muscle contractile markers (a-SMA, SM22a, calponin, and SM-MHC), while CaMKIIγoverexpression increases the transcriptional and protein levels of smooth muscle contractile markers. These results suggested thatγisoform of CaMKII plays a significant role in smooth muscle differentiation of hASCs.

scholarly journals Exosome Degeneration in Mesenchymal Stem Cells Derived from Patients with Type 1 Diabetes Mellitus

2021 ◽  
Vol 22 (20) ◽  
pp. 10906
Author(s):  
Michiko Horiguchi ◽  
Yuko Okada ◽  
Yuya Turudome ◽  
Kentaro Ushijima
Keyword(s):  
Diabetes Mellitus ◽  
Stem Cells ◽  
Type 1 Diabetes ◽  
Mesenchymal Stem Cells ◽  
Type 1 Diabetes Mellitus ◽  
Adipose Derived Stem Cells ◽  
Β Cells ◽  
Pancreatic Β Cells ◽  
Healthy Humans

Type 1 diabetes mellitus is characterized by the destruction of pancreatic β-cells and requires the regeneration of these destroyed pancreatic β-cells for radical treatment. The degeneration of organelles in stem cells compromises stem cell quality; however, organelles in the mesenchymal stem cells of patients with type 1 diabetes mellitus have not been characterized previously. In this study, we use transmission electron microscopy to evaluate the degeneration of organelles in adipose-derived stem cells of patients with type 1 diabetes mellitus (T1DM ADSCs). Compared to adipose-derived stem cells from healthy humans, T1DM ADSCs degenerate differently, characterized by prominent enlarged spherical vesicles. The exosomes of T1DM ADSCs are found to be enlarged, reduced in number, and increased in the percentage of those positive for tetraspanin CD9. The findings of this study provide insight into the characteristics of stem cells in patients with type 1 diabetes mellitus.

scholarly journals Pengaruh Penambahan Berbagai Konsentrasi L-Ascorbic Acid Terhadap Kemampuan Migrasi Adipose-Derived Stem Cells Asal Manusia

2020 ◽  
Vol 5 (4) ◽  
pp. 175
Author(s):  
Karina Karina ◽  
Imam Rosadi ◽  
Wismo Reja Subroto ◽  
Alfida Zakiyah ◽  
Irsyah Afini ◽  
...  
Keyword(s):  
Stem Cells ◽  
Ascorbic Acid ◽  
Mesenchymal Stem Cells ◽  
Cell Types ◽  
Adipose Derived Stem Cells ◽  
Migration Ability ◽  
Tissue Repair And Regeneration ◽  
Cell Sources ◽  
Fetal Bovine ◽  
And Control

<p>Abstrak - <strong>Mesenchymal Stem Cells (MSCs) merupakan sel yang memiliki kemampuan memperbarui diri dan berdiferensiasi menjadi berbagai jenis sel. MSCs berperan penting dalam perbaikan dan regenerasi jaringan. Adipose-Derived Stem Cells (ADSCs) merupakan MSCs yang didapatkan dari jaringan lemak. ADSCs telah banyak digunakan dalam studi MSCs karena ketersediaan sumber sel yang banyak dalam jaringan tubuh dan proses isolasinya lebih mudah serta memiliki risiko yang lebih rendah. Pada studi ini, ADSCs digunakan untuk mengetahui kemampuan migrasi dalam medium yang mengandung fetal bovine serum 10% (FBS) dengan penambahan L-Ascorbic Acid (LAA) konsentrasi 0%, 1%, 3% dan 6%. Kuantifikasi kemampuan migrasi dilakukan dengan menggunakan teknik goresan luka. ADSCs yang dikulturkan menunjukkan morfologi seperti fibroblas. Luas penutupan luka menunjukkan hasil tertinggi dengan perbedaan yang tidak signifikan pada penambahan konsentrasi LAA 3% dan 6% dibandingkan penambahan LAA 0%, 1% dan kontrol. Hasil ini juga ditunjukkan pada pasase 7, 8, dan 9. ADSCs menunjukkan kemampuan migrasi yang optimal pada penambahan LAA 3% dan 6% dibandingkan medium dengan penambahan LAA 0%, 1% dan kontrol.</strong></p><p>Abstract - <strong>Mesenchymal stem cells (MSCs) are multilineage cells with the ability to self-renew and differentiate into a variety of cell types. MSCs play important role in tissue repair and regeneration. Adipose-Derived Stem Cells (ADSCs) are MSCs derived from fat tissue. ADSCs has been widely used in MSCs studies because it require more cell sources in body tissue and the process of isolation is easier and has lower risk. In this study, ADSCs were used to determine migration ability in a medium containing 10% bovine fetal serum (FBS) using 0%, 1%, 3% and 6% of L-Ascorbic Acid (LAA) concentrations. Quantification of migration ability was done by using scratch technique. ADSCs were cultured display fibroblasts-like morphology. The closure of wound area is highest with not significantly difference in LAA concentrations of 3% and 6% compared to LAA 0%, 1% and control. This results were also showed on 7, 8, and 9 cell passage. ADSCs showed optimal migration ability at LAA 3% and 6% compared to media with LAA 0%, 1% and control.</strong></p><p><strong>Keywords - <em>ADSCs, Cells Migration, LAA</em></strong><em>.</em></p>

scholarly journals Adipose-derived stem cells: a review of osteogenesis differentiation

2016 ◽  
Vol 12 ◽  
pp. 38-47 ◽  
Author(s):  
Aleksandra Skubis ◽  
Bartosz Sikora ◽  
Nikola Zmarzły ◽  
Emilia Wojdas ◽  
Urszula Mazurek
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Regenerative Medicine ◽  
Bone Tissue ◽  
Tissue Regeneration ◽  
Cell Types ◽  
Bone Tissue Regeneration ◽  
Adipose Derived Stem Cells

This review article provides an overview on adipose-derived stem cells (ADSCs) for implications in bone tissue regeneration. Firstly this article focuses on mesenchymal stem cells (MSCs) which are object of interest in regenerative medicine. Stem cells have unlimited potential for self-renewal and develop into various cell types. They are used for many therapies such as bone tissue regeneration. Adipose tissue is one of the main sources of mesenchymal stem cells (MSCs). Regenerative medicine intends to differentiate ADSC along specific lineage pathways to effect repair of damaged or failing organs. For further clinical applications it is necessary to understand mechanisms involved in ADSCs proliferation and differentiation. Second part of manuscript based on osteogenesis differentiation of stem cells. Bones are highly regenerative organs but there are still many problems with therapy of large bone defects. Sometimes there is necessary to make a replacement or expansion new bone tissue. Stem cells might be a good solution for this especially ADSCs which manage differentiate into osteoblast in in vitro and in vivo conditions.

scholarly journals Collagen gel three-dimensional matrices combined with adhesive proteins stimulate neuronal differentiation of mesenchymal stem cells

2011 ◽  
Vol 8 (60) ◽  
pp. 998-1010 ◽  
Author(s):  
Jae Ho Lee ◽  
Hye-Sun Yu ◽  
Gil-Su Lee ◽  
Aeri Ji ◽  
Jung Keun Hyun ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Neuronal Differentiation ◽  
Large Population ◽  
Three Dimensional ◽  
Collagen Gel ◽  
Cell Types ◽  
Specific Cell ◽  
Neuronal Outgrowth ◽  
Adhesive Proteins

Three-dimensional gel matrices provide specialized microenvironments that mimic native tissues and enable stem cells to grow and differentiate into specific cell types. Here, we show that collagen three-dimensional gel matrices prepared in combination with adhesive proteins, such as fibronectin (FN) and laminin (LN), provide significant cues to the differentiation into neuronal lineage of mesenchymal stem cells (MSCs) derived from rat bone marrow. When cultured within either a three-dimensional collagen gel alone or one containing either FN or LN, and free of nerve growth factor (NGF), the MSCs showed the development of numerous neurite outgrowths. These were, however, not readily observed in two-dimensional culture without the use of NGF. Immunofluorescence staining, western blot and fluorescence-activated cell sorting analyses demonstrated that a large population of cells was positive for NeuN and glial fibrillary acidic protein, which are specific to neuronal cells, when cultured in the three-dimensional collagen gel. The dependence of the neuronal differentiation of MSCs on the adhesive proteins containing three-dimensional gel matrices is considered to be closely related to focal adhesion kinase (FAK) activation through integrin receptor binding, as revealed by an experiment showing no neuronal outgrowth in the FAK-knockdown cells and stimulation of integrin β1 gene. The results provided herein suggest the potential role of three-dimensional collagen-based gel matrices combined with adhesive proteins in the neuronal differentiation of MSCs, even without the use of chemical differentiation factors. Furthermore, these findings suggest that three-dimensional gel matrices might be useful as nerve-regenerative scaffolds.

scholarly journals Epigenetic Regulation of Mesenchymal Stem Cells: A Focus on Osteogenic and Adipogenic Differentiation

2011 ◽  
Vol 2011 ◽  
pp. 1-18 ◽  
Author(s):  
Chad M. Teven ◽  
Xing Liu ◽  
Ning Hu ◽  
Ni Tang ◽  
Stephanie H. Kim ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Epigenetic Regulation ◽  
Adult Stem Cells ◽  
Es Cells ◽  
Adipogenic Differentiation ◽  
Embryonic Stem ◽  
Cell Types ◽  
Differentiation Potential ◽  
Msc Differentiation

Stem cells are characterized by their capability to self-renew and terminally differentiate into multiple cell types. Somatic or adult stem cells have a finite self-renewal capacity and are lineage-restricted. The use of adult stem cells for therapeutic purposes has been a topic of recent interest given the ethical considerations associated with embryonic stem (ES) cells. Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into osteogenic, adipogenic, chondrogenic, or myogenic lineages. Owing to their ease of isolation and unique characteristics, MSCs have been widely regarded as potential candidates for tissue engineering and repair. While various signaling molecules important to MSC differentiation have been identified, our complete understanding of this process is lacking. Recent investigations focused on the role of epigenetic regulation in lineage-specific differentiation of MSCs have shown that unique patterns of DNA methylation and histone modifications play an important role in the induction of MSC differentiation toward specific lineages. Nevertheless, MSC epigenetic profiles reflect a more restricted differentiation potential as compared to ES cells. Here we review the effect of epigenetic modifications on MSC multipotency and differentiation, with a focus on osteogenic and adipogenic differentiation. We also highlight clinical applications of MSC epigenetics and nuclear reprogramming.

Mesenchymal stem cells: Stem cell therapy perspectives for type 1 diabetes

2009 ◽  
Vol 35 (2) ◽  
pp. 85-93 ◽  
Author(s):  
L. Vija ◽  
D. Farge ◽  
J.-F. Gautier ◽  
P. Vexiau ◽  
C. Dumitrache ◽  
...  
Keyword(s):  
Stem Cells ◽  
Type 1 Diabetes ◽  
Mesenchymal Stem Cells ◽  
Stem Cell ◽  
Cell Therapy ◽  
Stem Cell Therapy

scholarly journals Influence of Egr-1 in Cardiac Tissue-Derived Mesenchymal Stem Cells in Response to Glucose Variations

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Daniela Bastianelli ◽  
Camilla Siciliano ◽  
Rosa Puca ◽  
Andrea Coccia ◽  
Colin Murdoch ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Target Genes ◽  
Cardiac Tissue ◽  
Early Response ◽  
Induced Response ◽  
Protein Levels ◽  
Short Period ◽  
Phenotype Analysis

Mesenchymal stem cells (MSCs) represent a promising cell population for cell therapy and regenerative medicine applications. However, how variations in glucose are perceived by MSC pool is still unclear. Since, glucose metabolism is cell type and tissue dependent, this must be considered when MSCs are derived from alternative sources such as the heart. The zinc finger transcription factor Egr-1 is an important early response gene, likely to play a key role in the glucose-induced response. Our aim was to investigate how short-term changes inin vitroglucose concentrations affect multipotent cardiac tissue-derived MSCs (cMSCs) in a mouse model of Egr-1 KO (Egr-1−/−). Results showed that loss of Egr-1 does not significantly influence cMSC proliferation. In contrast, responses to glucose variations were observed in wt but not in Egr-1−/−cMSCs by clonogenic assay. Phenotype analysis by RT-PCR showed that cMSCs Egr-1−/−lost the ability to regulate the glucose transporters GLUT-1 and GLUT-4 and, as expected, the Egr-1 target genes VEGF, TGFβ-1, and p300. Acetylated protein levels of H3 histone were impaired in Egr-1−/−compared to wt cMSCs. We propose that Egr-1 acts as immediate glucose biological sensor in cMSCs after a short period of stimuli, likely inducing epigenetic modifications.

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