עבודה זו נתמכה על ידי מענק מטעם המכון הלאומי של דלקת מפרקים ומחלות עור השלד והשרירים, NIH RO1AR054458.

1. תיוג של hMSCs עם Endorem <ol style=";text-align:right;direction:rtl"><li style=";text-align:right;direction:rtl"> התאים גדלים על מפגש 80% לפחות 18 שעות לפני תיוג. </li><li style=";text-align:right;direction:rtl"> במהלך תקופה זו, התקשורת תיוג מוכן ידי הוספת Endorem המדגם במינון של 100 UG Fe / מ&quot;ל ​​סרום ללא התקשורת. </li><li style=";text-align:right;direction:rtl"> אחרי התאים גדלים על מפגש, תרבות מדיה aspirated תאים נשטפים 1x עם PBS או סרום ללא התקשורת. </li><li style=";text-align:right;direction:rtl"> בשלב הבא, הפתרון הוא לשטוף aspirated והתקשורת תיוג מוכן בעבר הוא הוסיף. התאים מודגרת אז 37 מעלות צלזיוס, 5% CO 2 למשך 4 שעות. </li><li style=";text-align:right;direction:rtl"> לאחר דגירה 4 שעות, תיוג מדיה aspirated ותאי הם שטופים עם PBS ו trypsinized כרגיל. </li><li style=";text-align:right;direction:rtl"> Trypsinized פעם, תאים נשטפים 3x עם PBS ו centrifuged ב 400rcf במשך 5 דקות. </li><li style=";text-align:right;direction:rtl"> לאחר שלב זה כביסה, תאים resuspended, נספר, העריכו את הכדאיות, ושימש הדרושים לניסויים. </li></ol> 2. הכנת agarose <ol style=";text-align:right;direction:rtl"><li style=";text-align:right;direction:rtl"> אחרי התאים סומנו בתווית זה הזמן להכין את הפתרון agarose. </li><li style=";text-align:right;direction:rtl"> בסולם בסדר, 80mg של agarose אבקת הם שקלו להוסיף 2ml של PBS. </li><li style=";text-align:right;direction:rtl"> פתרון זה אז מזועזע בעדינות autoclaved. </li><li style=";text-align:right;direction:rtl"> לאחר כ 40 דקות, הפתרון נוזל agarose ניתן לקחת מתוך החיטוי. היקף צריכה להיות מדודה מותאמים בהתאם עם PBS שחומם מראש. </li><li style=";text-align:right;direction:rtl"> אז הפתרון הוא מקורר עד 42 ° C </li></ol> 3. יצירת מאסי <ol style=";text-align:right;direction:rtl"><li style=";text-align:right;direction:rtl"> כאשר הפתרון agarose הגיעה הטמפרטורה הרצויה, התאים נספרים ו centrifuged בפעם האחרונה בצינור 1.5ml Eppendorf. </li><li style=";text-align:right;direction:rtl"> לאחר צנטריפוגה, supernatant הוא מושלך לבין התאים מעורבבים עם DMEM להגיע ריכוז של 30 x 10 6 תאים / מ&quot;ל. </li><li style=";text-align:right;direction:rtl"> עכשיו התאים מעורבבים עם 42 ° C agarose חם. </li><li style=";text-align:right;direction:rtl"> טיפ פיפטה קר עלול לגרום agarose לגבש בתוך קצה, ולכן מומלץ קצה מחממים ידי pipetting חם סטרילי PBS למעלה ולמטה </li><li style=";text-align:right;direction:rtl"> עכשיו, באותו נפח של agarose כמו התקשורת נלקח למעלה מעורב באופן יסודי עם ההשעיה התא מדיה כך השעיה אחיד נוצרת. </li><li style=";text-align:right;direction:rtl"> שמור את הצינור Eppendorf בתוך אמבט מים שחומם מראש תוך ערבוב כך agarose אינו להתקרר מספיק כדי לחזק. </li><li style=";text-align:right;direction:rtl"> כאשר ההשעיה היא הומוגנית, התאים המושתלים הפגם. </li></ol><img src="/files/ftp_upload/1793/1793fig1.jpg" alt="איור 1" /> באיור 1. העטרה תמונות T2 משוקלל SE (TR 4000 ms / TE 18.27 ms) של דגימה פיקת הברך עם hMSCs מושתל פגמים הסחוס.

<ol>
	<li>Mauck, R. L., Yuan, X., Tuan, R. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Chondrogenic+differentiation+and+functional+maturation+of+bovine+mesenchymal+stem+cells+in+long-term+agarose+culture.">Chondrogenic differentiation and functional maturation of bovine mesenchymal stem cells in long-term agarose culture.</a> Osteoarthritis Cartilage. 14, 179-189 (2006).</li><li>Pittenger, M. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Multilineage+potential+of+adult+human+mesenchymal+stem+cells.">Multilineage potential of adult human mesenchymal stem cells.</a> Science. 284, 143-147 (1999).</li><li>Rahfoth, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transplantation+of+allograft+chondrocytes+embedded+in+agarose+gel+into+cartilage+defects+of+rabbits.">Transplantation of allograft chondrocytes embedded in agarose gel into cartilage defects of rabbits.</a> Osteoarthritis Cartilage. 6, 50-65 (1998).</li><li>Henning, T. D., Boddington, S., Daldrup-Link, H. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Labeling+hESCs+and+hMSCs+with+iron+oxide+nanoparticles+for+non-invasive+in+vivo+tracking+with+MR+imaging.">Labeling hESCs and hMSCs with iron oxide nanoparticles for non-invasive in vivo tracking with MR imaging.</a> J Vis Exp. , (2008).</li></ol>

פרוטוקול תיאר מספק דרך לשחזור לתייג MSCs חלקיקי תחמוצת ברזל עם השתל ואת אלה MSCs שכותרתו לתוך פגמים הסחוס. טכניקה זו מאפשרת לא פולשנית תיאור של השתלת תא גזע פגמים סחוס עם MR הדמיה, המאפשרת גילוי מוקדם של כשל מאסי. נקע או בזרימת של תאים שכותרתו ניתן לאבחן מבוסס על היעלמותה של התווית מהאתר השתלת על תמונות MR. אבחון מוקדם של אירועים אלו רצוי היה למנוע את החולה חלופה הליכים מיותרים אבחון פולשניות. תיאר שיטה לא פולשנית לאבחון תוצאות מאסי, יכול לסייע בפיתוח מוצלח של טיפולים מבוססי תאים להתחדשות הסחוס דלקת מפרקים ניוונית. פרוטוקול שלנו המוחל כעת במחקרים פרה ב-vivo, יהיה עקרונית החלים קלינית יכולה לשמש כמדד לא פולשנית התוצאה להערכת טיפולים מאסי בפרקטיקה הקלינית.

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		<th>Comment</th>
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<td>D-MEM High Glucose</td>
<td>Reagent</td>
<td>Sigma</td>
<td>D5648</td>
<td>&nbsp;</td>
<tr>
<td>PBS (Ca++, Mg++ free)</td>
<td>&nbsp;</td>
<td>GIBCO</td>
<td>14190-144</td>
<td>&nbsp;</td>
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<td>Trypsin-EDTA 0.05%</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>25399-120</td>
<td>&nbsp;</td>
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<td>FBS</td>
<td>&nbsp;</td>
<td>Hyclone</td>
<td>SH30071.03</td>
<td>&nbsp;</td>
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<td>&nbsp;</td>
<td>GIBCO</td>
<td>15140-122</td>
<td>&nbsp;</td>
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<td>Ferumoxides (Endorem)</td>
<td>
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<td>&nbsp;</td>
<td>&nbsp;</td>
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<td>Agarose Typ VII</td>
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<td>A9045</td>
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implantation of ferumoxides labeled human mesenchymal stem cells in cartilage defects

תחום הנדסת הרקמות משלבת את עקרונות הביולוגיה, ההנדסה והרפואה תא לקראת התחדשות של תאים ספציפיים רקמות תפקודית. מטריקס תאים הקשורים גזע שתלים (מאסי) במטרה לחדש פגמים הסחוס עקב פציעות משותף דלקת פרקים או טראומטי. למבוגרים בתאי גזע mesenchymal (MSCs) יש את היכולת להתמיין לתאי השושלת chondrogenic ו הראו תוצאות מבטיחות עבור התא מבוססי טכנולוגיות הסחוס במפרק לתקן. עצמיים MSCs יכול להיות מבודד במגוון של רקמות, ניתן להרחיב בתרביות תאים מבלי לאבד פוטנציאל הבידול שלהם, הדגימו בידול chondrogenic במבחנה 1 vivo, 2. כדי לספק שמירה מקומיים הכדאיות של MSCs המושתלים פגמים סחוס, פיגום יש צורך, התומך גם בידול התפשטות עתידיים. הארכיטקטורה של היווצרות רקמה פיגום מדריכים מאפשר תאי מטריקס, המיוצר על ידי בתאי גזע, להרחיב. תחקירים קודמים הראו כי 2% agarose פיגום עשוי לתמוך בפיתוח של הסחוס hyaline יציב ואינו לגרום התגובה החיסונית 3. שימור ארוך טווח של בתאי גזע מושתלים מאסי הוא קריטי עבור התחדשות הסחוס. תיוג של MSCs תחמוצת ברזל עם חלקיקים מאפשר לטווח ארוך מעקב vivo עם פולשנית טכניקות הדמיה MR 4. מצגת זו תדגים טכניקות MSCs תיוג עם חלקיקי תחמוצת ברזל, הדור של תאים agarose בונה ההשתלה של מבנים אלה לתוך פגמים הסחוס. בונה שכותרתה ניתן לעקוב הלא פולשני עם MR-Imaging.

Watch this Scientific Journal Video about Implantation of Ferumoxides Labeled Human Mesenchymal Stem Cells in Cartilage Defects at JoVE.com

Implantation of Ferumoxides Labeled Human Mesenchymal Stem Cells in Cartilage Defects

המטרה של המצגת היא להדגים שיטה לשחזור מאוד ליצור מטריצה ​​תא הקשורים שתלים גזע פגמים הסחוס, אשר יכול להיות דמיינו עם MR הדמיה. בתאי גזע מסומנים עם ה-FDA Ferumoxides, מעורבב עם agarose, מושתלים לתוך פגמים סחוס צילמו עם סורק 7T MR.

השרשה של Ferumoxides תווית אדם בתאי גזע mesenchymal ב פגמים סחוס

The field of tissue engineering integrates the principles of engineering, cell biology and medicine towards the regeneration of specific cells and ...

implantation-ferumoxides-labeled-human-mesenchymal-stem-cells

Nanyang Technological University

Research

JoVE Journal

Biology

10.5K Views.  Medical Center, University of California San Francisco. המטרה של המצגת היא להדגים שיטה לשחזור מאוד ליצור מטריצה ​​תא הקשורים שתלים גזע פגמים הסחוס, אשר יכול להיות דמיינו עם MR הדמיה. בתאי גזע מסומנים עם ה-FDA Ferumoxides, מעורבב עם agarose, מושתלים לתוך פגמים סחוס צילמו עם סורק 7T MR.

Video: Implantation of Ferumoxides Labeled Human Mesenchymal Stem Cells in Cartilage Defects

Counting Human Neural Stem Cells

Knowledge of the exact number of viable cells in a given volume of a cell suspension is required for many routine tissue culture manipulations, such as plating cells for immunocytochemistry or for cell transfections. This protocol describes a straightforward and fast method for differentiating between live and dead cells and quantifying the cell concentration and total cell number using a hemacytometer. This procedure first requires detaching cells from a growth surface and resuspending them in media. Next, the cells are diluted in a solution of Trypan blue (ideally to a concentration that will give 20-50 cells per quadrant) and placed in the hemacytometer. Finally, averaging the counts of viable cells in several randomly selected quadrants, dividing the average by the volume of one 1 mm2 quadrant (0.1 &mu;l) and multiplying by the dilution factor gives the number of cells per l. Multiplying this cell concentration by the total volume in &mu;l gives the total cell number. This protocol describes counting human neural stem/precursor cells (hNSPCs), but can also be used for many other cell types.

Knowledge of the exact number of viable cells is required for many tissue culture manipulations. This protocol describes how to differentiate between live and dead cells and quantify cells using a hemacytometer. Although it describes counting human neural stem/precursor cells (hNSPCs), it can be used for other cell types.

ספירת אדם בתאי גזע עצביים

Knowledge of the exact number of viable cells in a given volume of a cell suspension is required for many routine tissue culture manipulations, such as ...

Isolation and Animal Serum Free Expansion of Human Umbilical Cord Derived Mesenchymal Stromal Cells (MSCs) and Endothelial Colony Forming Progenitor Cells (ECFCs)

The umbilical cord is a rich source for progenitor cells with high proliferative potential including mesenchymal stromal cells (also termed mesenchymal stem cells, MSCs) and endothelial colony forming progenitor cells (ECFCs). Both cell types are key players in maintaining the integrity of tissue and are probably also involved in regenerative processes and tumor formation.
To study their biology and function in a comparative manner it is important to have both cells types available from the same donor. It may also be beneficial for regenerative purposes to derive MSCs and ECFCs from the same tissue.
Because cellular therapeutics should eventually find their way from bench to bedside we established a new method to isolate and further expand progenitor cells without the use of animal protein. Pooled human platelet lysate (pHPL) replaced fetal bovine serum in all steps of our protocol to completely avoid contact of the cells to xenogeneic proteins.
This video demonstrates a methodology for the isolation and expansion of progenitor cells from one umbilical cord.
All materials and procedures will be described.

Isolation and Animal Serum Free Expansion of Human Umbilical Cord Derived Mesenchymal Stromal Cells MSCs and Endothelial Colony Forming Progenitor Cells ECFCs

This protocol describes the isolation and subsequent expansion of mesenchymal stromal cells and endothelial colony forming cells without the use of animal serum to generate autologous pairs for experimental transplantation purposes.

בידוד בעלי חיים הרחבת חינם סרום של טבורי האדם נגזר תאים סטרומה mesenchymal (MSCs) ו האנדותל יצירת המושבה ובתאים (ECFCs)

The umbilical cord is a rich source for progenitor cells with high proliferative potential including mesenchymal stromal cells (also termed mesenchymal ...

Peptides from Phage Display Library Modulate Gene Expression in Mesenchymal Cells and Potentiate Osteogenesis in Unicortical Bone Defects

Two novel synthetic peptides accelerate bone formation and can be delivered using a collagen matrix. The aim of this study was to investigate the effects on bone repair in a unicortical defect model. Treatment of mesenchymal cells produced an increase in alkaline phosphatase activity, showed nodule formation by the cells, and increased the expression of genes for runx2, osterix, bone sialoprotein, and osteocalcin. A collagen sponge soaked with peptide promoted repair of bone defects, whereas the control was less effective. The results from this study demonstrated that mesenchymal cells treated with peptide in vitro differentiate towards osteogenesis, and, that peptides delivered in vivo using a collagen sponge promote the repair of unicortical defects.

A phage display library was used to identify peptide sequences that target bone. The objective was to investigate the effect of these peptides on mesenchymal cell differentiation and to determine their effect on bone regeneration.

פפטידים מהספרייה תצוגה phage לווסת את ביטוי הגנים בתאים mesenchymal ו להגביר Osteogenesis ב פגמים עצם Unicortical

Two novel synthetic peptides accelerate bone formation and can be delivered using a collagen matrix. The aim of this study was to investigate the effects ...

Isolation &#38; Characterization of Hoechstlow CD45negative Mouse Lung Mesenchymal Stem Cells

Tissue resident mesenchymal stem cells (MSC) are important regulators of tissue repair or regeneration, fibrosis, inflammation, angiogenesis and tumor formation. Taken together these studies suggest that resident lung MSC play a role during pulmonary tissue homeostasis, injury and repair during diseases such as pulmonary fibrosis (PF) and arterial hypertension (PAH). Here we describe a technology to define a population of resident lung MSC. The definition of this population in vivo pulmonary tissue using a define set of markers facilitates the repeated isolation of a well-characterized stem cell population by flow cytometry and the study of a specific cell type and function.

Isolation & Characterization of Hoechstlow CD45negative Mouse Lung Mesenchymal Stem Cells

In this article we demonstrate the isolation of murine resident lung mesenchymal stem cells (lung MSC), their expansion, characterization and analysis of immunomodulatory properties.

בידוד &amp; אפיון Hoechst נמוך CD45 שלילי עכבר mesenchymal ריאות בתאי גזע

Tissue resident mesenchymal stem cells (MSC) are important regulators of tissue repair or regeneration, fibrosis, inflammation, angiogenesis and tumor ...

Reprogramming Human Somatic Cells into Induced Pluripotent Stem Cells (iPSCs) Using Retroviral Vector with GFP

Human embryonic stem cells (hESCs) are pluripotent and an invaluable cellular sources for in vitro disease modeling and regenerative medicine1. It has been previously shown that human somatic cells can be reprogrammed to pluripotency by ectopic expression of four transcription factors (Oct4, Sox2, Klf4 and Myc) and become induced pluripotent stem cells (iPSCs)2-4 . Like hESCs, human iPSCs are pluripotent and a potential source for autologous cells. Here we describe the protocol to reprogram human fibroblast cells with the four reprogramming factors cloned into GFP-containing retroviral backbone4. Using the following protocol, we generate human iPSCs in 3-4 weeks under human ESC culture condition. Human iPSC colonies closely resemble hESCs in morphology and display the loss of GFP fluorescence as a result of retroviral transgene silencing. iPSC colonies isolated mechanically under a fluorescence microscope behave in a similar fashion as hESCs. In these cells, we detect the expression of multiple pluripotency genes and surface markers.

Reprogramming Human Somatic Cells into Induced Pluripotent Stem Cells iPSCs Using Retroviral Vector with GFP

A method to generate human induced pluripotent stem cells (iPSCs) via retrovirus-mediated ectopic expression of OCT4, SOX2, KLF4 and MYC is described. A practical way to identify human iPSC colonies based on GFP expression is also discussed.

תכנות מחדש האדם תאים סומטיים תוך המושרה בתאי גזע pluripotent (iPSCs) באמצעות וקטור retroviral עם GFP

Human embryonic stem cells (hESCs) are pluripotent and an invaluable cellular sources for in vitro disease modeling and regenerative medicine1. It has ...

Induction and Analysis of Epithelial to Mesenchymal Transition

Epithelial to mesenchymal transition (EMT) is essential for proper morphogenesis during development. Misregulation of this process has been implicated as a key event in fibrosis and the progression of carcinomas to a metastatic state. Understanding the processes that underlie EMT is imperative for the early diagnosis and clinical control of these disease states. Reliable induction of EMT in vitro is a useful tool for drug discovery as well as to identify common gene expression signatures for diagnostic purposes. Here we demonstrate a straightforward method for the induction of EMT in a variety of cell types. Methods for the analysis of cells pre- and post-EMT induction by immunocytochemistry are also included. Additionally, we demonstrate the effectiveness of this method through antibody-based array analysis and migration/invasion assays.

A straightforward method is described for the induction of epithelial to mesenchymal transition (EMT) in a variety of cell types. Methods for the analysis of cells in EMT states by immunocytochemistry are included.

אינדוקציה וניתוח של אפיתל לmesenchymal מעבר

Epithelial  to mesenchymal transition (EMT) is essential for proper morphogenesis during  development. Misregulation of this  process has been implicated ...

Isolation and Culture of Dental Epithelial Stem Cells from the Adult Mouse Incisor

Understanding the cellular and molecular mechanisms that underlie tooth regeneration and renewal has become a topic of great interest1-4, and the mouse incisor provides a model for these processes. This remarkable organ grows continuously throughout the animal&#39;s life and generates all the necessary cell types from active pools of adult stem cells housed in the labial (toward the lip) and lingual (toward the tongue) cervical loop (CL) regions. Only the dental stem cells from the labial CL give rise to ameloblasts that generate enamel, the outer covering of teeth, on the labial surface. This asymmetric enamel formation allows abrasion at the incisor tip, and progenitors and stem cells in the proximal incisor ensure that the dental tissues are constantly replenished. The ability to isolate and grow these progenitor or stem cells in vitro allows their expansion and opens doors to numerous experiments not achievable in vivo, such as high throughput testing of potential stem cell regulatory factors. Here, we describe and demonstrate a reliable and consistent method to culture cells from the labial CL of the mouse incisor.

The continuously growing mouse incisor provides a model for studying renewal of dental tissues from dental epithelial stem cells (DESCs). A robust system for consistently and reliably obtaining these cells from the incisor and expanding them in vitro is reported here.

בידוד והתרבות של תאי גזע השיניים אפיתל ממבוגרי העכבר הארקטיק

Understanding the cellular and molecular mechanisms that underlie tooth regeneration and renewal has become a topic of great interest1-4, and the mouse ...

Efficient Generation Human Induced Pluripotent Stem Cells from Human Somatic Cells with Sendai-virus

A few years ago, the establishment of human induced pluripotent stem cells (iPSCs) ushered in a new era in biomedicine. Potential uses of human iPSCs include modeling pathogenesis of human genetic diseases, autologous cell therapy after gene correction, and personalized drug screening by providing a source of patient-specific and symptom relevant cells. However, there are several hurdles to overcome, such as eliminating the remaining reprogramming factor transgene expression after human iPSCs production. More importantly, residual transgene expression in undifferentiated human iPSCs could hamper proper differentiations and misguide the interpretation of disease-relevant in vitro phenotypes. With this reason, integration-free and/or transgene-free human iPSCs have been developed using several methods, such as adenovirus, the piggyBac system, minicircle vector, episomal vectors, direct protein delivery and synthesized mRNA. However, efficiency of reprogramming using integration-free methods is quite low in most cases.
Here, we present a method to isolate human iPSCs by using Sendai-virus (RNA virus) based reprogramming system. This reprogramming method shows consistent results and high efficiency in cost-effective manner.

Here, we present our established method to reprogram human somatic cells into transgene-free human iPSCs with Sendai virus, which shows consistent outcome and enhanced efficiency.

תאי גזע יעיל דור מושרה אדם פלוריפוטנטיים מתאים הסומטיים של אדם עם סנדאי וירוס

A few years ago, the establishment of human induced pluripotent stem cells (iPSCs) ushered in a new era in biomedicine. Potential uses of human iPSCs ...

Profiling Individual Human Embryonic Stem Cells by Quantitative RT-PCR

Heterogeneity of stem cell population hampers detailed understanding of stem cell biology, such as their differentiation propensity toward different lineages. A single cell transcriptome assay can be a new approach for dissecting individual variation. We have developed the single cell qRT-PCR method, and confirmed that this method works well in several gene expression profiles. In single cell level, each human embryonic stem cell, sorted by OCT4::EGFP positive cells, has high expression in OCT4, but a different level of NANOG expression. Our single cell gene expression assay should be useful to interrogate population heterogeneities.

Single cell gene expression assay is needed for understanding stem cell heterogeneities.

אפיון תאי גזע עוברי האנושי על ידי הפרט כמותי RT-PCR

Heterogeneity of stem cell population hampers detailed understanding of stem cell biology, such as their differentiation propensity toward different ...

A Simple Benchtop Filtration Method to Isolate Small Extracellular Vesicles from Human Mesenchymal Stem Cells

The ultracentrifugation-based process is considered the common method for small extracellular vesicles (sEVs) isolation. However, the yield from this isolation method is relatively lower, and these methods are inefficient in separating sEV subtypes. This study demonstrates a simple benchtop filtration method to isolate human umbilical cord-derived MSC small extracellular vesicles (hUC-MSC-sEVs), successfully separated by ultrafiltration from the conditioned medium of hUC-MSCs. The size distribution, protein concentration, exosomal markers (CD9, CD81, TSG101), and morphology of the isolated hUC-MSC-sEVs were characterized with nanoparticle tracking analysis, BCA protein assay, western blot, and transmission electron microscope, respectively. The isolated hUC-MSC-sEVs&#39; size was 30-200 nm, with a particle concentration of 7.75 &#215; 1010 particles/mL and a protein concentration of 80 &#181;g/mL. Positive bands for exosomal markers CD9, CD81, and TSG101 were observed. This study showed that hUC-MSC-sEVs were successfully isolated from hUC-MSCs conditioned medium, and characterization showed that the isolated product fulfilled the criteria mentioned by Minimal Information for Studies of Extracellular Vesicles 2018 (MISEV 2018).

This protocol demonstrates how to isolate human umbilical cord-derived mesenchymal stem cells&#39; small extracellular vesicles (hUC-MSC-sEVs) with a simple lab-scale benchtop setting. The size distribution, protein concentration, sEVs markers, and morphology of isolated hUC-MSC-sEVs are characterized by nanoparticle tracking analysis, BCA protein assay, western blot, and transmission electron microscope, respectively.

שיטת סינון פשוטה לבידוד בועיות חוץ-תאיות קטנות מתאי גזע מזנכימליים אנושיים

The ultracentrifugation-based process is considered the common method for small extracellular vesicles (sEVs) isolation. However, the yield from this ...