scholarly journals Functional Characteristics of Multipotent Mesenchymal Stromal Cells from Pituitary Adenomas

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Kaspars Megnis ◽  
Ilona Mandrika ◽  
Ramona Petrovska ◽  
Janis Stukens ◽  
Vita Rovite ◽  
...  
Keyword(s):  
Mesenchymal Stromal Cells ◽  
Stromal Cells ◽  
Pituitary Adenomas ◽  
Cell Types ◽  
Multipotent Mesenchymal Stromal Cells ◽  
Culture Conditions ◽  
Standard Laboratory ◽  
Vimentin Expression ◽  
Cell Culture Conditions ◽  
Supportive Cells

Pituitary adenomas are one of the most common endocrine and intracranial neoplasms. Although they are theoretically monoclonal in origin, several studies have shown that they contain different multipotent cell types that are thought to play an important role in tumor initiation, maintenance, and recurrence after therapy. In the present study, we isolated and characterized cell populations from seven pituitary somatotroph, nonhormonal, and lactotroph adenomas. The obtained cells showed characteristics of multipotent mesenchymal stromal cells as observed by cell morphology, cell surface marker CD90, CD105, CD44, and vimentin expression, as well as differentiation to osteogenic and adipogenic lineages. They are capable of growth and passaging under standard laboratory cell culture conditions and do not manifest any hormonal cell characteristics. Multipotent mesenchymal stromal cells are present in pituitary adenomas regardless of their clinical manifestation and show no considerable expression of somatostatin 1–5 and dopamine 2 receptors. Most likely obtained cells are a part of tissue-supportive cells in pituitary adenoma microenvironment.

scholarly journals Phospholipid Profiles for Phenotypic Characterization of Adipose-Derived Multipotent Mesenchymal Stromal Cells

2021 ◽  
Vol 9 ◽  
Author(s):  
Janina Burk ◽  
Michaela Melzer ◽  
Alina Hagen ◽  
Katrin Susanne Lips ◽  
Katja Trinkaus ◽  
...  
Keyword(s):  
Mesenchymal Stromal Cells ◽  
Stromal Cells ◽  
Human Fibroblasts ◽  
Cell Types ◽  
Multipotent Mesenchymal Stromal Cells ◽  
Culture Conditions ◽  
Platelet Lysate ◽  
Phenotypic Characterization ◽  
Mesodermal Cell ◽  
Wide Range

Multipotent mesenchymal stromal cells (MSC) have emerged as therapeutic tools for a wide range of pathological conditions. Yet, the still existing deficits regarding MSC phenotype characterization and the resulting heterogeneity of MSC used in different preclinical and clinical studies hamper the translational success. In search for novel MSC characterization approaches to complement the traditional trilineage differentiation and immunophenotyping assays reliably across species and culture conditions, this study explored the applicability of lipid phenotyping for MSC characterization and discrimination. Human peripheral blood mononuclear cells (PBMC), human fibroblasts, and human and equine adipose-derived MSC were used to compare different mesodermal cell types and MSC from different species. For MSC, cells cultured in different conditions, including medium supplementation with either fetal bovine serum or platelet lysate as well as culture on collagen-coated dishes, were additionally investigated. After cell harvest, lipids were extracted by chloroform/methanol according to Bligh and Dyer. The lipid profiles were analysed by an untargeted approach using liquid chromatography coupled to mass spectrometry (LC-MS) with a reversed phase column and an ion trap mass spectrometer. In all samples, phospholipids and sphingomyelins were found, while other lipids were not detected with the current approach. The phospholipids included different species of phosphatidylcholine (PC), phosphatidylethanolamine (PE), phosphatidylinositol (PI) and phosphatidylserine (PS) in all cell types, whereas phosphatidylglycerol (PG) species were only present in MSC. MSC from both species showed a higher phospholipid species diversity than PBMC and fibroblasts. Few differences were found between MSC from different culture conditions, except that human MSC cultured with platelet lysate exhibited a unique phenotype in that they exclusively featured PE O-40:4, PG 38:6 and PG 40:6. In search for specific and inclusive candidate MSC lipid markers, we identified PE O-36:3 and PG 40:7 as potentially suitable markers across culture conditions, at which PE O-36:3 might even be used across species. On that basis, phospholipid phenotyping is a highly promising approach for MSC characterization, which might condone some heterogeneity within the MSC while still achieving a clear discrimination even from fibroblasts. Particularly the presence or absence of PG might emerge as a decisive criterion for future MSC characterization.

Animal serum-free culture conditions for isolation and expansion of multipotent mesenchymal stromal cells from human BM

Cytotherapy ◽  
2006 ◽  
Vol 8 (5) ◽  
pp. 437-444 ◽  
Author(s):  
I. Müller ◽  
S. Kordowich ◽  
C. Holzwarth ◽  
C. Spano ◽  
G. Isensee ◽  
...  
Keyword(s):  
Mesenchymal Stromal Cells ◽  
Stromal Cells ◽  
Multipotent Mesenchymal Stromal Cells ◽  
Culture Conditions ◽  
Serum Free

scholarly journals Multipotent mesenchymal stromal cells are sensitive to thermic stress – potential implications for therapeutic hyperthermia

2020 ◽  
Vol 37 (1) ◽  
pp. 430-441
Author(s):  
Alexander Rühle ◽  
Andreas Thomsen ◽  
Rainer Saffrich ◽  
Maren Voglstätter ◽  
Birgit Bieber ◽  
...  
Keyword(s):  
Mesenchymal Stromal Cells ◽  
Stromal Cells ◽  
Multipotent Mesenchymal Stromal Cells ◽  
Therapeutic Hyperthermia

scholarly journals 3D-printed nerve guidance conduits multi-functionalized with canine multipotent mesenchymal stromal cells promote neuroregeneration after sciatic nerve injury in rats

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Diego Noé Rodríguez-Sánchez ◽  
Giovana Boff Araujo Pinto ◽  
Luciana Politti Cartarozzi ◽  
Alexandre Leite Rodrigues de Oliveira ◽  
Ana Livia Carvalho Bovolato ◽  
...  
Keyword(s):  
Growth Factor ◽  
Sciatic Nerve ◽  
Nerve Injury ◽  
Mesenchymal Stromal Cells ◽  
Stromal Cells ◽  
Multipotent Mesenchymal Stromal Cells ◽  
Sciatic Nerve Injury ◽  
Motor Deficits ◽  
3D Printed

Abstract Background Nerve injuries are debilitating, leading to long-term motor deficits. Remyelination and axonal growth are supported and enhanced by growth factor and cytokines. Combination of nerve guidance conduits (NGCs) with adipose-tissue-derived multipotent mesenchymal stromal cells (AdMSCs) has been performing promising strategy for nerve regeneration. Methods 3D-printed polycaprolactone (PCL)-NGCs were fabricated. Wistar rats subjected to critical sciatic nerve damage (12-mm gap) were divided into sham, autograft, PCL (empty NGC), and PCL + MSCs (NGC multi-functionalized with 106 canine AdMSCs embedded in heterologous fibrin biopolymer) groups. In vitro, the cells were characterized and directly stimulated with interferon-gamma to evaluate their neuroregeneration potential. In vivo, the sciatic and tibial functional indices were evaluated for 12 weeks. Gait analysis and nerve conduction velocity were analyzed after 8 and 12 weeks. Morphometric analysis was performed after 8 and 12 weeks following lesion development. Real-time PCR was performed to evaluate the neurotrophic factors BDNF, GDNF, and HGF, and the cytokine and IL-10. Immunohistochemical analysis for the p75NTR neurotrophic receptor, S100, and neurofilament was performed with the sciatic nerve. Results The inflammatory environment in vitro have increased the expression of neurotrophins BDNF, GDNF, HGF, and IL-10 in canine AdMSCs. Nerve guidance conduits multi-functionalized with canine AdMSCs embedded in HFB improved functional motor and electrophysiological recovery compared with PCL group after 12 weeks. However, the results were not significantly different than those obtained using autografts. These findings were associated with a shift in the regeneration process towards the formation of myelinated fibers. Increased immunostaining of BDNF, GDNF, and growth factor receptor p75NTR was associated with the upregulation of BDNF, GDNF, and HGF in the spinal cord of the PCL + MSCs group. A trend demonstrating higher reactivity of Schwann cells and axonal branching in the sciatic nerve was observed, and canine AdMSCs were engrafted at 30 days following repair. Conclusions 3D-printed NGCs multi-functionalized with canine AdMSCs embedded in heterologous fibrin biopolymer as cell scaffold exerted neuroregenerative effects. Our multimodal approach supports the trophic microenvironment, resulting in a pro-regenerative state after critical sciatic nerve injury in rats.

Alterations in multipotent mesenchymal stromal cells from the bone marrow of acute myeloid leukemia patients at diagnosis and during treatment

2019 ◽  
Vol 60 (8) ◽  
pp. 2042-2049
Author(s):  
Irina N. Shipounova ◽  
Nataliya A. Petinati ◽  
Alexey E. Bigildeev ◽  
Tamara V. Sorokina ◽  
Larisa A. Kuzmina ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Acute Myeloid Leukemia ◽  
Mesenchymal Stromal Cells ◽  
Stromal Cells ◽  
Myeloid Leukemia ◽  
Multipotent Mesenchymal Stromal Cells ◽  
Acute Myeloid
Sign in / Sign up

Export Citation Format

Share Document