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Stem Cell Research & Therapy

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https://www.readbyqxmd.com/read/28327192/dna-double-strand-breaks-in-human-induced-pluripotent-stem-cell-reprogramming-and-long-term-in-vitro-culturing
#1
Pavel Simara, Lenka Tesarova, Daniela Rehakova, Pavel Matula, Stanislav Stejskal, Ales Hampl, Irena Koutna
BACKGROUND: Human induced pluripotent stem cells (hiPSCs) play roles in both disease modelling and regenerative medicine. It is critical that the genomic integrity of the cells remains intact and that the DNA repair systems are fully functional. In this article, we focused on the detection of DNA double-strand breaks (DSBs) by phosphorylated histone H2AX (known as γH2AX) and p53-binding protein 1 (53BP1) in three distinct lines of hiPSCs, their source cells, and one line of human embryonic stem cells (hESCs)...
March 21, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28320452/compared-to-the-amniotic-membrane-wharton-s-jelly-may-be-a-more-suitable-source-of-mesenchymal-stem-cells-for-cardiovascular-tissue-engineering-and-clinical-regeneration
#2
Lei Pu, Mingyao Meng, Jian Wu, Jing Zhang, Zongliu Hou, Hui Gao, Hui Xu, Boyu Liu, Weiwei Tang, Lihong Jiang, Yaxiong Li
BACKGROUND: The success of developing cardiovascular tissue engineering (CTE) grafts greatly needs a readily available cell substitute for endothelial and interstitial cells. Perinatal annexes have been proposed as a valuable source of mesenchymal stem cells (MSCs) for tissue engineering and regenerative medicine. The objective of the present study is to evaluate the potential of human Wharton's jelly MSCs (WJ-MSCs) and amniotic membrane MSCs (AM-MSCs) as a seeding cell in CTE and cardiovascular regenerative medicine...
March 21, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28320485/mesenchymal-stem-cells-increase-expression-of-heme-oxygenase-1-leading-to-anti-inflammatory-activity-in-treatment-of-acute-liver-failure
#3
Zhi-Heng Zhang, Wei Zhu, Hao-Zhen Ren, Xin Zhao, Shuai Wang, Hu-Cheng Ma, Xiao-Lei Shi
BACKGROUND: Mesenchymal stem cells (MSCs) have been studied for the treatment of acute liver failure (ALF) for several years. MSCs may exert their effect via complex paracrine mechanisms. Heme oxygenase (HO) 1, a rate-limiting enzyme in heme metabolism, exerts a wide range of anti-inflammatory, anti-apoptotic and immunoregulatory effects in a variety of diseases. However, the relationship between MSCs and HO-1 in the treatment of ALF is still unclear. We investigated the preventive and therapeutic potential of intravenously administered BMSCs...
March 20, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28320483/human-and-feline-adipose-derived-mesenchymal-stem-cells-have-comparable-phenotype-immunomodulatory-functions-and-transcriptome
#4
Kaitlin C Clark, Fernando A Fierro, Emily Mills Ko, Naomi J Walker, Boaz Arzi, Clifford G Tepper, Heather Dahlenburg, Andrew Cicchetto, Amir Kol, Lyndsey Marsh, William J Murphy, Nasim Fazel, Dori L Borjesson
BACKGROUND: Adipose-derived mesenchymal stem cells (ASCs) are a promising cell therapy to treat inflammatory and immune-mediated diseases. Development of appropriate pre-clinical animal models is critical to determine safety and attain early efficacy data for the most promising therapeutic candidates. Naturally occurring diseases in cats already serve as valuable models to inform human clinical trials in oncologic, cardiovascular, and genetic diseases. The objective of this study was to complete a comprehensive side-by-side comparison of human and feline ASCs, with an emphasis on their immunomodulatory capacity and transcriptome...
March 20, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28320463/hyaluronan-coating-improves-liver-engraftment-of-transplanted-human-biliary-tree-stem-progenitor-cells
#5
Lorenzo Nevi, Guido Carpino, Daniele Costantini, Vincenzo Cardinale, Olga Riccioni, Sabina Di Matteo, Fabio Melandro, Pasquale Bartolomeo Berloco, Lola Reid, Eugenio Gaudio, Domenico Alvaro
BACKGROUND: Cell therapy of liver diseases with human biliary tree stem cells (hBTSCs) is biased by low engraftment efficiency. Coating the hBTSCs with hyaluronans (HAs), the primary constituents of all stem cell niches, could facilitate cell survival, proliferation, and, specifically, liver engraftment given that HAs are cleared selectively by the liver. METHODS: We developed a fast and easy method to coat hBTSCs with HA and assessed the effects of HA-coating on cell properties in vitro and in vivo...
March 20, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28320453/dysregulated-systemic-lymphocytes-affect-the-balance-of-osteogenic-adipogenic-differentiation-of-bone-mesenchymal-stem-cells-after-local-irradiation
#6
Xiaoya Xu, Ruixia Li, Yi Zhou, Qiong Zou, Qiaoling Ding, Jinfeng Wang, Weifang Jin, Guoqiang Hua, Jianjun Gao
BACKGROUND: While it is known that irradiation can induce local and systemic bone loss over time, how focal irradiation induces systemic bone complications remains unclear. Immune cells are thought to be crucial to bone homeostasis, and abnormal immune cells lead to serious disruption of bone homeostasis, such as in acute lymphoblastic leukaemia. This disruption primarily occurs due to inhibition of the osteogenic differentiation of bone mesenchymal stem cells (BMSCs). METHODS: In this study, we detected local and systemic bone loss in trabecular bone by micro-computed tomography (micro-CT) and measurement of peroxisome proliferator-activated receptor gamma (PPARγ) and runt-related transcription factor 2 (RUNX2) expression in BMSCs using real-time polymerase chain reaction and western blotting...
March 20, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28302184/cytokine-free-directed-differentiation-of-human-pluripotent-stem-cells-efficiently-produces-hemogenic-endothelium-with-lymphoid-potential
#7
Yekaterina Galat, Svetlana Dambaeva, Irina Elcheva, Aaruni Khanolkar, Kenneth Beaman, Philip M Iannaccone, Vasiliy Galat
BACKGROUND: The robust generation of human hematopoietic progenitor cells from induced or embryonic pluripotent stem cells would be beneficial for multiple areas of research, including mechanistic studies of hematopoiesis, the development of cellular therapies for autoimmune diseases, induced transplant tolerance, anticancer immunotherapies, disease modeling, and drug/toxicity screening. Over the past years, significant progress has been made in identifying effective protocols for hematopoietic differentiation from pluripotent stem cells and understanding stages of mesodermal, endothelial, and hematopoietic specification...
March 17, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28284229/influence-of-temperature-fluctuations-during-cryopreservation-on-vital-parameters-differentiation-potential-and-transgene-expression-of-placental-multipotent-stromal-cells
#8
Denys Pogozhykh, Olena Pogozhykh, Volodymyr Prokopyuk, Larisa Kuleshova, Anatoliy Goltsev, Rainer Blasczyk, Thomas Mueller
BACKGROUND: Successful implementation of rapidly advancing regenerative medicine approaches has led to high demand for readily available cellular suspensions. In particular, multipotent stromal cells (MSCs) of placental origin have shown therapeutic efficiency in the treatment of numerous pathologies of varied etiology. Up to now, cryopreservation is the only effective way to preserve the viability and unique properties of such cells in the long term. However, practical biobanking is often associated with repeated temperature fluctuations or interruption of a cold chain due to various technical, transportation, and stocking events...
March 11, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28283030/impaired-osteogenesis-of-t1dm-bone-marrow-derived-stromal-cells-and-periosteum-derived-cells-and-their-differential-in-vitro-responses-to-growth-factor-rescue
#9
Tera M Filion, Jordan D Skelly, Henry Huang, Dale L Greiner, David C Ayers, Jie Song
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 disrupted. We test the hypotheses that osteogenesis of bone marrow-derived stromal cells (BMSCs) and periosteum-derived cells (PDCs), two critical skeletal progenitors in long bone healing, are both impaired in T1DM and that they respond differentially to osteogenic bone morphogenetic proteins (BMPs) and/or insulin-like growth factor-1 (IGF-1) rescue...
March 11, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28279229/human-umbilical-cord-mesenchymal-stem-cells-improve-the-reserve-function-of-perimenopausal-ovary-via-a-paracrine-mechanism
#10
Jia Li, QiuXian Mao, JingJun He, HaoQing She, Zhi Zhang, ChunYan Yin
BACKGROUND: Human umbilical cord mesenchymal stem cells (hUCMSCs) are a type of pluripotent stem cell which are isolated from the umbilical cord of newborns. hUCMSCs have great therapeutic potential. We designed this experimental study in order to investigate whether the transplantation of hUCMSCs can improve the ovarian reserve function of perimenopausal rats and delay ovarian senescence. METHOD: We selected naturally aging rats confirmed by vaginal smears as models of perimenopausal rats, divided into the control group and the treatment group, and selected young fertile female rats as normal controls...
March 9, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28279225/allogenic-adipose-derived-stem-cell-therapy-overcomes-ischemia-induced-microvessel-rarefaction-in-the-myocardium-systems-biology-study
#11
Gemma Vilahur, Blanca Oñate, Judit Cubedo, Maria Teresa Béjar, Gemma Arderiu, Esther Peña, Laura Casaní, Manuel Gutiérrez, Antoni Capdevila, Guillem Pons-Lladó, Francesc Carreras, Alberto Hidalgo, Lina Badimon
BACKGROUND: Myocardial microvascular loss after myocardial infarction (MI) remains a therapeutic challenge. Autologous stem cell therapy was considered as an alternative; however, it has shown modest benefits due to the impairing effects of cardiovascular risk factors on stem cells. Allogenic adipose-derived stem cells (ASCs) may overcome such limitations, and because of their low immunogenicity and paracrine potential may be good candidates for cell therapy. In the present study we investigated the effects of allogenic ASCs and their released products on cardiac rarefaction post MI...
March 9, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28279224/urethral-reconstruction-with-autologous-urine-derived-stem-cells-seeded-in-three-dimensional-porous-small-intestinal-submucosa-in-a-rabbit-model
#12
Yang Liu, Wenjun Ma, Bo Liu, Yangcai Wang, Jiaqiang Chu, Geng Xiong, Lianju Shen, Chunlan Long, Tao Lin, Dawei He, Denis Butnaru, Lyundup Alexey, Yuanyuan Zhang, Deying Zhang, Guanghui Wei
BACKGROUND: Urethral reconstruction is one of the great surgical challenges for urologists. A cell-based tissue-engineered urethra may be an alternative for patients who have complicated long strictures and need urethral reconstruction. Here, we demonstrated the feasibility of using autologous urine-derived stem cells (USCs) seeded on small intestinal submucosa (SIS) to repair a urethral defect in a rabbit model. METHODS: Autologous USCs were obtained and characterized, and their capacity to differentiate into urothelial cells (UCs) and smooth muscle cells (SMCs) was tested...
March 9, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28279220/short-course-rapamycin-treatment-enables-engraftment-of-immunogenic-gene-engineered-bone-marrow-under-low-dose-irradiation-to-permit-long-term-immunological-tolerance
#13
Kunal H Bhatt, Rajeev Rudraraju, Jeremy F Brooks, Ji-Won Jung, Ryan Galea, James W Wells, Raymond J Steptoe
BACKGROUND: Application of genetically modified hematopoietic stem cells is increasingly mooted as a clinically relevant approach to protein replacement therapy, immune tolerance induction or conditions where both outcomes may be helpful. Hematopoietic stem and progenitor cell (HSPC)-mediated gene therapy often requires highly toxic pretransfer recipient conditioning to provide a 'niche' so that transferred HSPCs can engraft effectively and to prevent immune rejection of neoantigen-expressing engineered HSPCs...
March 9, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28279214/cardiotoxicity-evaluation-using-human-embryonic-stem-cells-and-induced-pluripotent-stem-cell-derived-cardiomyocytes
#14
Qi Zhao, Xijie Wang, Shuyan Wang, Zheng Song, Jiaxian Wang, Jing Ma
BACKGROUND: Cardiotoxicity remains an important concern in drug discovery. Human pluripotent stem cell-derived cardiomyocytes (hPSC-CMs) have become an attractive platform to evaluate cardiotoxicity. However, the consistency between human embryonic stem cell-derived cardiomyocytes (hESC-CMs) and human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) in prediction of cardiotoxicity has yet to be elucidated. METHODS: Here we screened the toxicities of four representative drugs (E-4031, isoprenaline, quinidine, and haloperidol) using both hESC-CMs and hiPSC-CMs, combined with an impedance-based bioanalytical method...
March 9, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28279202/systemic-administration-of-mesenchymal-stem-cells-combined-with-parathyroid-hormone-therapy-synergistically-regenerates-multiple-rib-fractures
#15
Doron Cohn Yakubovich, Dmitriy Sheyn, Maxim Bez, Yeshai Schary, Eran Yalon, Afeef Sirhan, May Amira, Alin Yaya, Sandra De Mel, Xiaoyu Da, Shiran Ben-David, Wafa Tawackoli, Eric J Ley, Dan Gazit, Zulma Gazit, Gadi Pelled
BACKGROUND: A devastating condition that leads to trauma-related morbidity, multiple rib fractures, remain a serious unmet clinical need. Systemic administration of mesenchymal stem cells (MSCs) has been shown to regenerate various tissues. We hypothesized that parathyroid hormone (PTH) therapy would enhance MSC homing and differentiation, ultimately leading to bone formation that would bridge rib fractures. METHODS: The combination of human MSCs (hMSCs) and a clinically relevant PTH dose was studied using immunosuppressed rats...
March 9, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28279201/magnetic-targeting-as-a-strategy-to-enhance-therapeutic-effects-of-mesenchymal-stromal-cells
#16
REVIEW
Luisa H A Silva, Fernanda F Cruz, Marcelo M Morales, Daniel J Weiss, Patricia R M Rocco
Mesenchymal stromal cells (MSCs) have been extensively investigated in the field of regenerative medicine. It is known that the success of MSC-based therapies depends primarily on effective cell delivery to the target site where they will secrete vesicles and soluble factors with immunomodulatory and potentially reparative properties. However, some lesions are located in sites that are difficult to access, such as the heart, spinal cord, and joints. Additionally, low MSC retention at target sites makes cell therapy short-lasting and, therefore, less effective...
March 9, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28279199/cd117-cd44-stem-t-cells-develop-in-the-thymus-and-potently-suppress-t-cell-proliferation-by-modulating-the-ctla-4-pathway
#17
Yang Wei, Zhansheng Hu, Wen Gu, Gang Liu, Bingyin Shi, Enqi Liu, Tie Liu
BACKGROUND: CD117 is expressed on double-negative (DN; CD4(-)CD8(-)) cells (Nat Rev Immunol 14:529-545; 2014), but whether it is expressed in other stages and its subsequent functions are unclear. We used an improved method of flow cytometry to analyze different populations of thymocytes (Sci Rep 4:5781; 2014). The expression of CD117 and CTLA-4 were directly assayed in the early stage of thymocytes. METHODS: Flow cytometry was used to analyze different populations of thymocytes, and T-cell proliferation assays, RT-PCR, and real-time RT-PCR were used to characterize the stem cells and examine the function of CD44(+)CD117(+) cells...
March 9, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28279198/sox9-transcriptionally-regulates-wnt-signaling-in-intestinal-epithelial-stem-cells-in-hypomethylated-crypts-in-the-diabetic-state
#18
Can-Ze Huang, Ji-Hao Xu, Wa Zhong, Zhong-Sheng Xia, Si-Yi Wang, Di Cheng, Jie-Yao Li, Ting-Feng Wu, Qi-Kui Chen, Tao Yu
BACKGROUND: Distinctive structures called crypts harbor intestinal epithelial stem cells (IESCs) which generate progenitor and terminally differentiated cells in the intestinal epithelium. Mammalian IESCs and their daughter cells require the participation of DNA methylation and the transcription factor Sox9 for proliferation and differentiation. However, the association between Sox9 and DNA methylation in this process remains elusive. METHODS: The DNA methylation of small intestinal epithelial crypts in db/db mice was detected via combining methylated DNA immunoprecipitation with microarray hybridization...
March 9, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28279196/erratum-to-specific-disruption-of-lnk-in-murine-endothelial-progenitor-cells-promotes-dermal-wound-healing-via-enhanced-vasculogenesis-activation-of-myofibroblasts-and-suppression-of-inflammatory-cell-recruitment
#19
Jun Hee Lee, Seung Taek Ji, Jaeho Kim, Satoshi Takaki, Takayuki Asahara, Young-Joon Hong, Sang-Mo Kwon
No abstract text is available yet for this article.
March 9, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28279194/crispr-targeted-genome-editing-of-mesenchymal-stem-cell-derived-therapies-for-type-1-diabetes-a-path-to-clinical-success
#20
REVIEW
Dario Gerace, Rosetta Martiniello-Wilks, Najah Therese Nassif, Sara Lal, Raymond Steptoe, Ann Margaret Simpson
Due to their ease of isolation, differentiation capabilities, and immunomodulatory properties, the therapeutic potential of mesenchymal stem cells (MSCs) has been assessed in numerous pre-clinical and clinical settings. Currently, whole pancreas or islet transplantation is the only cure for people with type 1 diabetes (T1D) and, due to the autoimmune nature of the disease, MSCs have been utilised either natively or transdifferentiated into insulin-producing cells (IPCs) as an alternative treatment. However, the initial success in pre-clinical animal models has not translated into successful clinical outcomes...
March 9, 2017: Stem Cell Research & Therapy
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