Abstract:
BACKGROUND:Senescent cells are undesirable in cell therapy products due to reduced therapeutic activity and risk of aberrant cellular effects, and methods for assessing senescence are needed. Early-passage mesenchymal stromal cells (MSCs) are known to be small and spindle-shaped but become enlarged upon cell aging. Indeed, cell morphology is routinely evaluated during MSC production using subjective methods. We have therefore explored the possibility of utilizing automated imaging-based analysis of cell morphology in clinical cell manufacturing. METHODS:An imaging system was adopted for analyzing changes in cell morphology of bone marrow-derived MSCs during long-term culture. Cells taken from the cultures at the desired passages were plated at low density for imaging, representing morphological changes observed in the clinical-grade cultures. The manifestations of aging and onset of senescence were monitored by population doubling numbers, expression of p16INK4a and p21Cip1/Waf1, β-galactosidase activity, and telomeric terminal restriction fragment analysis. RESULTS:Cell area was the most statistically significant and practical parameter for describing morphological changes, correlating with biochemical senescence markers. MSCs from passages 1 (p1) and 3 (p3) were remarkably uniform in size, with cell areas between 1800 and 2500 μm2. At p5 the cells began to enlarge resulting in a 4.8-fold increase at p6-9 as compared to p1. The expression of p16INK4a and activity of β-galactosidase had a strong correlation with the increase in cell area, whereas the expression of p21Cip1/Waf1 reached its maximum at the onset of growth arrest and subsequently decreased. Mean telomere length shortened at an apparently constant rate during culture, from 8.2 ± 0.3 kbp at p1, reaching 6.08 ± 0.6 kbp at senescence. CONCLUSIONS:Imaging analysis of cell morphology is a useful tool for evaluating aging in cell cultures throughout the lifespan of MSCs. Our findings suggest that imaging analysis can reproducibly detect aging-related changes in cell morphology in MSC cultures. These findings suggest that cell morphology is still a supreme measure of cell quality and may be utilized to develop new noninvasive imaging-based methods to screen and quantitate aging in clinical-grade cell cultures.
journal_name
Stem Cell Res Therjournal_title
Stem cell research & therapyauthors
Oja S,Komulainen P,Penttilä A,Nystedt J,Korhonen Mdoi
10.1186/s13287-017-0740-xsubject
Has Abstractpub_date
2018-01-10 00:00:00pages
6issue
1issn
1757-6512pii
10.1186/s13287-017-0740-xjournal_volume
9pub_type
杂志文章abstract:INTRODUCTION:Fallopian tube, which is normally discarded in surgical procedures, has proven to be a source of mesenchymal stem cells (MSCs) with increasing evidence. However, fallopian tube mucosa, which can be acquired via non-invasive procedures, is a previously unknown source of MSCs. In the present study, we explor...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-015-0094-1
更新日期:2015-05-21 00:00:00
abstract:BACKGROUND:Inner ear supporting cells (SCs) in the neonatal mouse cochlea are a potential source for hair cell (HC) regeneration, but several studies have shown that the regeneration ability of SCs decreases dramatically as mice age and that lost HCs cannot be regenerated in adult mice. To better understand how SCs mig...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-019-1437-0
更新日期:2019-12-02 00:00:00
abstract:BACKGROUND:Bone marrow mesenchymal stem cells (BMSCs) exhibit the capacity to self-renew and differentiate into multi-lineage cell types, including osteoblasts, which are crucial regulators of fracture healing. Thus, this study aims to investigate the effect of microRNA (miR)-22-3p from BMSC-derived EVs on osteogenic d...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-020-01707-6
更新日期:2020-06-10 00:00:00
abstract:INTRODUCTION:Despite attempts to prevent brain injury during the hyperacute phase of stroke, most sufferers end up with significant neuronal loss and functional deficits. The use of cell-based therapies to recover the injured brain offers new hope. In the current study, we employed human neural stem cells (hNSCs) isola...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-015-0175-1
更新日期:2015-09-29 00:00:00
abstract::Tendon injuries, as one of the most common orthopedic disorders, are the major cause of early retirement or wastage among sport horses which mainly affect the superficial digital flexor tendon (SDFT). Tendon repair is a slow process, and tendon tissue is often replaced by scar tissue. The current treatment options are...
journal_title:Stem cell research & therapy
pub_type: 杂志文章,评审
doi:10.1186/s13287-019-1291-0
更新日期:2019-06-18 00:00:00
abstract::Adipogenesis is essential in in vitro experimentation to assess differentiation capability of stem cells, and therefore, its accurate measurement is important. Quantitative analysis of adipogenic levels, however, is challenging and often susceptible to errors due to non-specific reading or manual estimation by observe...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-019-1141-0
更新日期:2019-01-22 00:00:00
abstract:INTRODUCTION:The therapeutic potential of acyclic retinoid (ACR), a synthetic retinoid, has been confirmed in experimental and clinical studies. Therapeutic targets include precancerous and cancer stem cells. As ACR is also involved in developmental processes, its effect on normal hepatic stem cells (HpSCs) should be i...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-015-0046-9
更新日期:2015-03-26 00:00:00
abstract:BACKGROUND:Hertwig's epithelial root sheath (HERS) is important in guiding tooth root formation by differentiating into cementoblasts through epithelial-mesenchymal transition (EMT) and inducing odontoblastic differentiation of dental papilla through epithelial-mesenchymal interaction (EMI) during the tooth root develo...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-018-1106-8
更新日期:2019-01-03 00:00:00
abstract:BACKGROUND:Bone reconstruction in congenital craniofacial differences, which affect about 2-3% of newborns, has long been the focus of intensive research in the field of bone tissue engineering. The possibility of using mesenchymal stromal cells in regenerative medicine protocols has opened a new field of investigation...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-020-02017-7
更新日期:2020-11-25 00:00:00
abstract::Multipotent mesenchymal stromal cells (MSCs) are an attractive cell source for cell therapy in cartilage. Although their therapeutic potential is clear, the requirements and conditions for effective induction of chondrogenesis in MSCs and for the production of a stable cartilaginous tissue by these cells are far from ...
journal_title:Stem cell research & therapy
pub_type: 杂志文章,评审
doi:10.1186/scrt31
更新日期:2010-10-13 00:00:00
abstract:BACKGROUND:Bone marrow-derived mesenchymal stromal cells (MSCs) are multipotent cells with a high constitutive level of autophagy and low expression of CD99. Under certain conditions, MSCs may develop tumorigenic properties. However, these transformation-induced conditions are largely unknown. Recently, we have identif...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-017-0532-3
更新日期:2017-04-18 00:00:00
abstract:BACKGROUND:Polycystic ovary syndrome (PCOS) is a common endocrine and metabolic disorder that affects female fertility. However, with the lack of a corresponding research model, the pathology mechanism of PCOS is poorly understood. Induced pluripotent stem cell (iPSC) technology has been recognized as means to generate...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-018-0950-x
更新日期:2018-08-09 00:00:00
abstract:BACKGROUND:The intervertebral disc (IVD) has limited self-healing potential and disc repair strategies require an appropriate cell source such as progenitor cells that could regenerate the damaged cells and tissues. The objective of this study was to identify nucleus pulposus-derived progenitor cells (NPPC) and examine...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-016-0337-9
更新日期:2016-05-23 00:00:00
abstract:BACKGROUND:Stress urinary incontinence (SUI) is a common and bothersome condition. Invasive surgery will always be considered after conservative treatment fails, but the rates of postoperative complications and long-term recurrence are high. Thus, a new treatment strategy is still needed. In recent years, bone marrow m...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-020-01808-2
更新日期:2020-07-16 00:00:00
abstract:INTRODUCTION:Fetal bovine serum (FBS) is an animal product used as a medium supplement. The animal origin of FBS is a concern if cultured stem cells are to be utilized for human cell therapy. Therefore, a substitute for FBS is desirable. In this study, an industrial, xeno-free, pharmaceutical-grade supplement for cell ...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-015-0016-2
更新日期:2015-03-13 00:00:00
abstract:BACKGROUND:Amyotrophic lateral sclerosis (ALS) represents a devastating, progressive, heterogeneous, and the most common motor neuron (MN) disease. To date, no cure has been available for the condition. Studies with transgenic mice have yielded significant results that help us understand the underlying mechanisms of AL...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-018-1048-1
更新日期:2018-11-15 00:00:00
abstract:BACKGROUND:Although the mononuclear cell (MNC) transplantation could theoretically induce therapeutic angiogenesis in the patients with no-option critical limb ischemia (NO-CLI), the clinical responses to this approach are inconsistent among different clinical trials. The purpose of this study was to identify the progn...
journal_title:Stem cell research & therapy
pub_type: 临床试验,杂志文章
doi:10.1186/s13287-018-1117-5
更新日期:2019-01-11 00:00:00
abstract::Over the last two decades, a new therapeutic paradigm has emerged which has changed the way debilitating diseases may be treated in the future. Instead of using small-molecule drugs and devices to ameliorate the symptoms of disease, clinicians may harness the therapeutic power of cells to regenerate and cure diseases ...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-015-0145-7
更新日期:2015-08-22 00:00:00
abstract:BACKGROUND:Pulpitis is a common dental disease characterized by sustained inflammation and impaired pulp self-repair. Mesenchymal stem cell-based minimally invasive vital pulp therapy (MSC-miVPT) is a potential treatment method, but its application is limited by the difficulty in acquiring MSCs. We recently revealed th...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-020-01841-1
更新日期:2020-08-03 00:00:00
abstract:BACKGROUND:Exploring the effects of lncRNA SNHG1 in the process of osteogenic differentiation of periodontal ligament stem cells (PDLSCs) would provide novel therapeutic strategies for tissue regeneration. METHODS:Loss-of-function and gain-of-function assays were induced by lentivirus. The osteogenic differentiation o...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-020-01953-8
更新日期:2020-10-07 00:00:00
abstract:BACKGROUND:Mesenchymal stem cell (MSC)-based cartilage tissue regeneration is a treatment with great potential. How to enhance the MSC chondrogenic differentiation is a key issue involved in cartilage formation. In the present study, we seek to expound the phenotypes and mechanisms of DLX5 in chondrogenic differentiati...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-020-01791-8
更新日期:2020-07-06 00:00:00
abstract:BACKGROUND:Mesenchymal stromal cells (MSCs) are considered potential candidates that hold great promise in the treatment of immune-related diseases. For therapeutic applications, it is necessary to isolate and expand MSCs with procedures complying with good manufacturing practice (GMP). Recent studies reported the use ...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-019-1175-3
更新日期:2019-03-07 00:00:00
abstract:BACKGROUND:Alveolar bone loss is a frequent occurrence. Dental pulp stem cells (DPSCs) which have invasive accessibility and high osteogenic potential is a promising source for cell-based bone regeneration. EphrinB2 is involved in bone homeostasis and osteogenesis. The aim of this study was to investigate the effect an...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-019-1540-2
更新日期:2020-01-29 00:00:00
abstract:INTRODUCTION:Silk fibroin (SF) scaffolds have been shown to be a suitable substrate for tissue engineering and to improve tissue regeneration when cellularized with mesenchymal stromal cells (MSCs). We here demonstrate, for the first time, that electrospun nanofibrous SF patches cellularized with human adipose-derived ...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/scrt396
更新日期:2014-01-14 00:00:00
abstract:BACKGROUND:One of the most severe complications of the current COVID-19 pandemic is acute respiratory distress syndrome (ARDS). ARDS is caused by increased amounts of pro-inflammatory cytokines, leading to lung damage and loss of lung function. There are currently no effective therapies for combatting ARDS. Mesenchymal...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-021-02143-w
更新日期:2021-01-19 00:00:00
abstract:BACKGROUND:Human adipose-derived stromal cells (hASCs) have been gaining increasing popularity in regenerative medicine thanks to their multipotency, ease of collection, and efficient culture. Similarly to other stromal cells, their function is particularly sensitive to the culture conditions, including the composition...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-019-1333-7
更新日期:2019-08-14 00:00:00
abstract:INTRODUCTION:Idiopathic pulmonary fibrosis is a progressive diffuse parenchymal lung disorder of unknown etiology. Mesenchymal stem cell (MSC)-based therapy is a novel approach with great therapeutic potential for the treatment of lung diseases. Despite demonstration of MSC grafting, the populations of engrafted MSCs h...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-015-0081-6
更新日期:2015-05-20 00:00:00
abstract:BACKGROUND:Poor bone quality, increased fracture risks, and impaired bone healing are orthopedic comorbidities of type 1 diabetes (T1DM). Standard osteogenic growth factor treatments are inadequate in fully rescuing retarded healing of traumatic T1DM long bone injuries where both periosteal and bone marrow niches are d...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-017-0521-6
更新日期:2017-03-11 00:00:00
abstract:BACKGROUND:Bone defects are a common clinical condition that has gained an increasing amount of attention in recent years. Causes of bone defect include tumors, inflammation, and fractures. Bone tissue engineering is a novel treatment of bone defect, and human mesenchymal stem cells (hMSCs) are the ideal seed cells for...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-020-01631-9
更新日期:2020-03-25 00:00:00
abstract:BACKGROUND:The transplantation of human umbilical cord blood (UCB) CD34+ cells has been successfully used to treat hematological disorders but one major limitation has been the low cell numbers available. Mesenchymal stem cells (MSCs) lying within the bone marrow in vivo behave like a scaffold on which CD34+ cells inte...
journal_title:Stem cell research & therapy
pub_type: 杂志文章
doi:10.1186/s13287-020-02048-0
更新日期:2020-12-09 00:00:00