Abstract:
:Retrotransposons comprise a significant fraction of mammalian genome with unclear functions. Increasing evidence shows that they are not just remnants of ancient retroviruses but play important roles in multiple biological processes. Retrotransposons are epigenetically silenced in most somatic tissues and become reactivated in early embryos. Notably, abundant retrotransposon expression in mouse embryonic stem cells (ESCs) marks transient totipotency status, while retrotransposon enrichment in human ESCs indicates naive-like status. Some retrotransposon elements retained the capacity to retrotranspose, such as LINE1, producing genetic diversity or disease. Some other retrotransposons reside in the vicinity of endogenous genes and are capable of regulating nearby genes and cell fate, possibly through providing alternative promoters, regulatory modules, or orchestrating high-order chromatin assembly. In addition, retrotransposons may mediate epigenetic memory, regulate gene expression posttranscriptionally, defend virus infection, and so on. In this review, we summarize expression patterns and regulatory functions of different retrotransposons in early embryos and ESCs, as well as document molecular mechanisms controlling retrotransposon expression and their potential functions. Further investigations on the regulatory network of retrotransposons in early embryogenesis and ESCs will provide valuable insights and a deeper understanding of retrotransposon biology. Additionally, endeavors made to unveil the roles of these mysterious elements may facilitate stem cell status conversion and manipulation of pluripotency.
journal_name
Stem Cells Intjournal_title
Stem cells internationalauthors
Yin Y,Zhou L,Yuan Sdoi
10.1155/2018/6239245subject
Has Abstractpub_date
2018-07-15 00:00:00pages
6239245eissn
1687-966Xissn
1687-9678journal_volume
2018pub_type
杂志文章,评审abstract::Human bone marrow mesenchymal stem cells (hBM-MSCs) are the best characterized multipotent adult stem cells. Their self-renewal capacity, multilineage differentiation potential, and immunomodulatory properties have indicated that they can be used in many clinical therapies. In a previous work we studied the DNA methyl...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2016/5656701
更新日期:2016-01-01 00:00:00
abstract::A mere 9 years have passed since the revolutionary report describing the derivation of induced pluripotent stem cells from human fibroblasts and the first in-patient translational use of cells obtained from these stem cells has already been achieved. From the perspectives of clinicians and researchers alike, the promi...
journal_title:Stem cells international
pub_type: 杂志文章,评审
doi:10.1155/2016/4287158
更新日期:2016-01-01 00:00:00
abstract::Ubiquitination of core stem cell transcription factors can directly affect stem cell maintenance and differentiation. Ubiquitination and deubiquitination must occur in a timely and well-coordinated manner to regulate the protein turnover of several stemness related proteins, resulting in optimal embryonic stem cell ma...
journal_title:Stem cells international
pub_type: 杂志文章,评审
doi:10.1155/2016/6705927
更新日期:2016-01-01 00:00:00
abstract::Following the discovery of pluripotent stem (PS) cells such as embryonic stem (ES) and induced pluripotent stem (iPS) cells, there has been a great hope that injured tissues can be repaired by transplantation of ES/iPS-derived various specific types of cells such as neural stem cells (NSCs). Although PS cells can be i...
journal_title:Stem cells international
pub_type: 杂志文章,评审
doi:10.1155/2015/630693
更新日期:2015-01-01 00:00:00
abstract::Tendon healing is fraught with complications such as reruptures and adhesion formation due to the formation of scar tissue at the injury site as opposed to the regeneration of native tissue. Stem cells are an attractive option in developing cell-based therapies to improve tendon healing. However, several questions rem...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2012/291431
更新日期:2012-01-01 00:00:00
abstract::Urine has become the source of choice for noninvasive renal epithelial cells and renal stem cells which can be used for generating induced pluripotent stem cells. The aim of this study was to generate a 3D nephrogenic progenitor cell model composed of three distinct cell types-urine-derived SIX2-positive renal progeni...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2019/3298432
更新日期:2019-05-02 00:00:00
abstract::Fetal dermal mesenchymal stem cells (FDMSCs), isolated from fetal skin, are serving as a novel MSC candidate with great potential in regenerative medicine. More recently, the paracrine actions, especially MSC-derived exosomes, are being focused on the vital role in MSC-based cellular therapy. This study was to evaluat...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2019/2402916
更新日期:2019-06-10 00:00:00
abstract::Myocardial infarction is a leading cause of death among all cardiovascular diseases. Cell therapies using a cell population enriched with endothelial progenitor cells (EPCs), expanded CD133+ cells, have promise as a therapeutic option for the treatment of ischemic areas after infarction. Recently, secreted membrane ve...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2019/4802578
更新日期:2019-12-01 00:00:00
abstract::Mesenchymal stem cells (MSCs) are multipotent stem cells that have a strong osteogenic differentiation capacity. However, the molecular mechanism underlying the osteogenic differentiation of MSCs remains largely unknown and thus hinders further development of MSC-based cell therapies for bone repair in the clinic. RSP...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2020/7073805
更新日期:2020-04-06 00:00:00
abstract:Background:Cancer stem cell (CSC) promotes angiogenesis which plays an important role in tumor occurrence, growth, and metastasis. Accurately, quantifying the tumor vasculature can help understanding CSC characteristics and improve cancer diagnosis, therapy planning, and evaluation. The objective of this study is to pr...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2018/7813729
更新日期:2018-04-03 00:00:00
abstract::Two of the main problems of stem cell and regenerative medicine are the exit of pluripotency and differentiation to functional cells or tissues. The answer to these two problems holds great value in the clinical translation of stem cell as well as regenerative medicine research. Although piling researches have reveale...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2020/8483035
更新日期:2020-02-03 00:00:00
abstract::The cornea is a clear structure, void of blood, and lymphatic vessels, functioning as our window to the world. Limbal epithelial stem cells, occupying the area between avascular cornea and vascularized conjunctiva, have been implicated in tissue border maintenance, preventing conjunctivalisation and propagation of blo...
journal_title:Stem cells international
pub_type: 杂志文章,评审
doi:10.1155/2018/8620172
更新日期:2018-05-08 00:00:00
abstract::Background and Objectives. Culture expanded multipotential stromal cells (MSCs) have considerable potential for bone regeneration therapy but their wider use is constrained by the lack of simple and predictive assays of functional potency. Extended passaging leads to loss of multipotency but speed of decline depends o...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2017/6129596
更新日期:2017-01-01 00:00:00
abstract::Previously, we demonstrated a high quality of minerals formed by serum-free cultured jaw periosteal cells (JPCs) by Raman spectroscopy but the mineralization extent was not satisfactory. In the present study, we analyzed the proliferation and mineralization potential of human platelet lysate- (hPL-) cultured JPCs in c...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2017/8303959
更新日期:2017-01-01 00:00:00
abstract::[This corrects the article DOI: 10.1155/2017/3978595.]. ...
journal_title:Stem cells international
pub_type: 已发布勘误
doi:10.1155/2017/9438310
更新日期:2017-01-01 00:00:00
abstract::Articular cartilage defects have been addressed by using multiple strategies. In the last two decades, promising new strategies by using assorted scaffolds and cell sources to induce tissue regeneration have emerged, such as autologous chondrocyte implantation (ACI) and mesenchymal stem cell implantation (MSCI). Howev...
journal_title:Stem cells international
pub_type: 杂志文章,评审
doi:10.1155/2016/9201492
更新日期:2016-01-01 00:00:00
abstract::Increasing the success rate of rotator cuff healing remains tremendous challenge. Among many approaches, the possibility of activating resident stem cells in situ, without the need to isolate them from biopsies, could represent valuable therapeutic strategy. Along this line, it has been recently demonstrated that lipo...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2016/4373410
更新日期:2016-01-01 00:00:00
abstract::Tendinopathy is a tendon disorder characterized by activity-related pain, local edema, focal tenderness to palpation, and decreased strength in the affected area. Tendinopathy is prevalent in both athletes and the general population, highlighting the need to elucidate the pathogenesis of this disorder. Current treatme...
journal_title:Stem cells international
pub_type: 杂志文章,评审
doi:10.1155/2016/4076578
更新日期:2016-01-01 00:00:00
abstract::As mesenchymal stem cells (MSCs) are being investigated for regenerative therapies to be used in the clinic, delineating the roles of the IGF system in MSC growth and differentiation, in vitro, is vital in developing these cellular therapies to treat degenerative diseases. Muscle differentiation is a multistep process...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2019/9245938
更新日期:2019-02-17 00:00:00
abstract::Metabolism is central to embryonic stem cell (ESC) pluripotency and differentiation, with distinct profiles apparent under different nutrient milieu, and conditions that maintain alternate cell states. The significance of altered nutrient availability, particularly oxygen, and metabolic pathway activity has been highl...
journal_title:Stem cells international
pub_type: 杂志文章,评审
doi:10.1155/2017/2874283
更新日期:2017-01-01 00:00:00
abstract::Obesity, defined as a body mass index of 30 kg/m2 or above, has increased considerably in incidence and frequency within the United States and globally. Associated comorbidities including cardiovascular disease, type 2 diabetes mellitus, metabolic syndrome, and nonalcoholic fatty liver disease have led to a focus on t...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2020/4242130
更新日期:2020-06-10 00:00:00
abstract::There are very few model systems which demonstrate hematopoiesis in vitro. Previously, we described unique splenic stromal cell lines which support the in vitro development of hematopoietic cells and particularly myeloid cells. Here, the 5G3 spleen stromal cell line has been investigated for capacity to support the di...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2018/9896142
更新日期:2018-12-25 00:00:00
abstract::Mesenchymal stem/stromal cells (MSCs) are known to be useful for treating local bone diseases. However, it is not known if MSCs are effective for treating systemic bone diseases, as the risk for mortality following intravenous MSC administration has hindered research progress. In this study, we compared the safety and...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2019/4214281
更新日期:2019-11-12 00:00:00
abstract::Mesenchymal stromal cells (MSCs) offering valuable anticipations for the treatment of degenerative diseases. They can be found in many tissues including amnion. MSCs from amnion (AM-MSCs) can differentiate into osteoblast similar to that of bone marrow-derived MSCs (BM-MSCs). However, the ability is not much efficient...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2017/7257628
更新日期:2017-01-01 00:00:00
abstract::An intermediate filament protein, Nestin, is known as a neural stem/progenitor cell marker. It was shown to be required for the survival and self-renewal of neural stem cells according to the phenotypes of Nestin knockout mice. Nestin expression has also been reported in vascular endothelial cells, and we recently rep...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2012/430138
更新日期:2012-01-01 00:00:00
abstract::Left-right symmetry breaking is a complex developmental process and an important part of embryonic axis development. As of yet, the biophysical mechanism behind LR asymmetry establishment remains elusive for the overall asymmetry of embryos as well as for the organ-specific asymmetry. Here, we demonstrate that inheren...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2018/1848605
更新日期:2018-12-02 00:00:00
abstract::The development of chemoresistance to cisplatin regimens causes a poor prognosis in patients with advanced NSCLC. The role of noncanonical Wnt signaling in the regulation of properties of lung cancer stem cells and chemoresistance was interrogated, by accessing capacities of cell proliferation, migration, invasion, an...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2016/1690896
更新日期:2016-01-01 00:00:00
abstract::Calcium phosphate- (CaP-) based composite scaffolds have been used extensively for the bone regeneration in bone tissue engineering. Previously, we developed a biomimetic composite nanofibrous membrane of gelatin/β-tricalcium phosphate (TCP) and confirmed their biological activity in vitro and bone regeneration in viv...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2015/507154
更新日期:2015-01-01 00:00:00
abstract::Age-related macular degeneration (AMD) is a leading cause of legal blindness in individuals over 60 years of age, characterized by the dysfunction of retinal pigmented epithelium cells, specifically in the macular area. Despite several treatment options, AMD therapy remains difficult, especially for exudative AMD. Mul...
journal_title:Stem cells international
pub_type: 杂志文章
doi:10.1155/2012/946090
更新日期:2012-01-01 00:00:00
abstract::Stem cells are a promising cell source for regenerative medicine. Stem cell differentiation must be regulated for applications in regenerative medicine. Stem cells are surrounded by extracellular matrix (ECM) in vivo. The ECM is composed of many types of proteins and glycosaminoglycans that assemble into a complex str...
journal_title:Stem cells international
pub_type: 杂志文章,评审
doi:10.1155/2016/6397820
更新日期:2016-01-01 00:00:00