journal
MENU ▼
Read by QxMD icon Read
search

Stem Cell Reports

journal
https://www.readbyqxmd.com/read/28416286/in%C3%A2-vivo-rnai-screen-unveils-ppar%C3%AE-as-a-regulator-of-hematopoietic-stem-cell-homeostasis
#1
Mathieu Sertorio, Wei Du, Surya Amarachintha, Andrew Wilson, Qishen Pang
Hematopoietic stem cell (HSC) defects can cause repopulating impairment leading to hematologic diseases. To target HSC deficiency in a disease setting, we exploited the repopulating defect of Fanconi anemia (FA) HSCs to conduct an in vivo short hairpin RNA (shRNA) screen. We exposed Fancd2(-/-) HSCs to a lentiviral shRNA library targeting 947 genes. We found enrichment of shRNAs targeting genes involved in the PPARγ pathway that has not been linked to HSC homeostasis. PPARγ inhibition by shRNA or chemical compounds significantly improves the repopulating ability of Fancd2(-/-) HSCs...
April 12, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28416284/distinct-roles-for-matrix-metalloproteinases-2-and-9-in-embryonic-hematopoietic-stem-cell-emergence-migration-and-niche-colonization
#2
Lindsay N Theodore, Elliott J Hagedorn, Mauricio Cortes, Kelsey Natsuhara, Sarah Y Liu, Julie R Perlin, Song Yang, Madeleine L Daily, Leonard I Zon, Trista E North
Hematopoietic stem/progenitor cells (HSPCs) are formed during ontogeny from hemogenic endothelium in the ventral wall of the dorsal aorta (VDA). Critically, the cellular mechanism(s) allowing HSPC egress and migration to secondary niches are incompletely understood. Matrix metalloproteinases (MMPs) are inflammation-responsive proteins that regulate extracellular matrix (ECM) remodeling, cellular interactions, and signaling. Here, inhibition of vascular-associated Mmp2 function caused accumulation of fibronectin-rich ECM, retention of runx1/cmyb(+) HSPCs in the VDA, and delayed caudal hematopoietic tissue (CHT) colonization; these defects were absent in fibronectin mutants, indicating that Mmp2 facilitates endothelial-to-hematopoietic transition via ECM remodeling...
April 12, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28416285/atypical-pkc-and-notch-inhibition-differentially-modulate-cortical-interneuron-subclass-fate-from-embryonic-stem-cells
#3
David J Tischfield, Junho Kim, Stewart A Anderson
Recent studies indicate that the location of neurogenesis within the medial ganglionic eminence (MGE) critically influences the fate determination of cortical interneuron subgroups, with parvalbumin (Pv) interneurons originating from subventricular zone divisions and somatostatin (Sst) interneurons primarily arising from apical divisions. The aPKC-CBP and Notch signaling pathways regulate the transition from apical to basal progenitor and their differentiation into post-mitotic neurons. We find that aPKC inhibition enhances intermediate neurogenesis from stem cell-derived MGE progenitors, resulting in a markedly increased ratio of Pv- to Sst-expressing interneurons...
April 6, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28416287/responsible-translation-of-stem-cell-research-an-assessment-of-clinical-trial-registration-and-publications
#4
Moses Fung, Yan Yuan, Harold Atkins, Qian Shi, Tania Bubela
We assessed the extent to which the publication of clinical trial results of innovative cell-based interventions reflects International Society for Stem Cell Research best practice guidelines. We assessed: (1) characteristics and time to publication of completed trials; (2) quality of reported trials; and (3) results of published trials. We identified and analyzed publications from 1,052 novel stem cell clinical trials: 179 (45.4%) of 393 completed trials had published results; 48 trials were registered by known stem cell tourism clinics, none of which reported results...
April 5, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28416283/activation-of-irf1-in-human-adipocytes-leads-to-phenotypes-associated-with-metabolic-disease
#5
Max Friesen, Raymond Camahort, Youn-Kyoung Lee, Fang Xia, Robert E Gerszten, Eugene P Rhee, Rahul C Deo, Chad A Cowan
The striking rise of obesity-related metabolic disorders has focused attention on adipocytes as critical mediators of disease phenotypes. To better understand the role played by excess adipose in metabolic dysfunction it is crucial to decipher the transcriptional underpinnings of the low-grade adipose inflammation characteristic of diseases such as type 2 diabetes. Through employing a comparative transcriptomics approach, we identified IRF1 as differentially regulated between primary and in vitro-derived genetically matched adipocytes...
April 5, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28392217/high-throughput-and-cost-effective-characterization-of-induced-pluripotent-stem-cells
#6
Matteo D'Antonio, Grace Woodruff, Jason L Nathanson, Agnieszka D'Antonio-Chronowska, Angelo Arias, Hiroko Matsui, Roy Williams, Cheryl Herrera, Sol M Reyna, Gene W Yeo, Lawrence S B Goldstein, Athanasia D Panopoulos, Kelly A Frazer
Reprogramming somatic cells to induced pluripotent stem cells (iPSCs) offers the possibility of studying the molecular mechanisms underlying human diseases in cell types difficult to extract from living patients, such as neurons and cardiomyocytes. To date, studies have been published that use small panels of iPSC-derived cell lines to study monogenic diseases. However, to study complex diseases, where the genetic variation underlying the disorder is unknown, a sizable number of patient-specific iPSC lines and controls need to be generated...
April 4, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28392216/ipscore-a-resource-of-222-ipsc-lines-enabling-functional-characterization-of-genetic-variation-across-a-variety-of-cell-types
#7
Athanasia D Panopoulos, Matteo D'Antonio, Paola Benaglio, Roy Williams, Sherin I Hashem, Bernhard M Schuldt, Christopher DeBoever, Angelo D Arias, Melvin Garcia, Bradley C Nelson, Olivier Harismendy, David A Jakubosky, Margaret K R Donovan, William W Greenwald, KathyJean Farnam, Megan Cook, Victor Borja, Carl A Miller, Jonathan D Grinstein, Frauke Drees, Jonathan Okubo, Kenneth E Diffenderfer, Yuriko Hishida, Veronica Modesto, Carl T Dargitz, Rachel Feiring, Chang Zhao, Aitor Aguirre, Thomas J McGarry, Hiroko Matsui, He Li, Joaquin Reyna, Fangwen Rao, Daniel T O'Connor, Gene W Yeo, Sylvia M Evans, Neil C Chi, Kristen Jepsen, Naoki Nariai, Franz-Josef Müller, Lawrence S B Goldstein, Juan Carlos Izpisua Belmonte, Eric Adler, Jeanne F Loring, W Travis Berggren, Agnieszka D'Antonio-Chronowska, Erin N Smith, Kelly A Frazer
Large-scale collections of induced pluripotent stem cells (iPSCs) could serve as powerful model systems for examining how genetic variation affects biology and disease. Here we describe the iPSCORE resource: a collection of systematically derived and characterized iPSC lines from 222 ethnically diverse individuals that allows for both familial and association-based genetic studies. iPSCORE lines are pluripotent with high genomic integrity (no or low numbers of somatic copy-number variants) as determined using high-throughput RNA-sequencing and genotyping arrays, respectively...
April 3, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28416282/derivation-of-human-midbrain-specific-organoids-from-neuroepithelial-stem%C3%A2-cells
#8
Anna S Monzel, Lisa M Smits, Kathrin Hemmer, Siham Hachi, Edinson Lucumi Moreno, Thea van Wuellen, Javier Jarazo, Jonas Walter, Inga Brüggemann, Ibrahim Boussaad, Emanuel Berger, Ronan M T Fleming, Silvia Bolognin, Jens C Schwamborn
Research on human brain development and neurological diseases is limited by the lack of advanced experimental in vitro models that truly recapitulate the complexity of the human brain. Here, we describe a robust human brain organoid system that is highly specific to the midbrain derived from regionally patterned neuroepithelial stem cells. These human midbrain organoids contain spatially organized groups of dopaminergic neurons, which make them an attractive model for the study of Parkinson's disease. Midbrain organoids are characterized in detail for neuronal, astroglial, and oligodendrocyte differentiation...
March 31, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28392221/melanoma-derived-ipccs-show-differential-tumorigenicity-and-therapy-response
#9
Mathias Bernhardt, Daniel Novak, Yassen Assenov, Elias Orouji, Nathalie Knappe, Kasia Weina, Maike Reith, Lionel Larribere, Christoffer Gebhardt, Christoph Plass, Viktor Umansky, Jochen Utikal
A point mutation in the BRAF gene, leading to a constitutively active form of the protein, is present in 45%-60% of patients and acts as a key driver in melanoma. Shortly after therapy induction, resistance to MAPK pathway-specific inhibitors develops, indicating that pathway inhibition is circumvented by epigenetic mechanisms. Here, we mimicked epigenetic modifications in melanoma cells by reprogramming them into metastable induced pluripotent cancer cells (iPCCs) with the ability to terminally differentiate into non-tumorigenic lineages...
March 30, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28392218/promyelocytic-leukemia-protein-is-an-essential-regulator-of-stem-cell-pluripotency-and-somatic-cell-reprogramming
#10
Christiana Hadjimichael, Konstantina Chanoumidou, Christoforos Nikolaou, Antonios Klonizakis, Gesthimani-Ioanna Theodosi, Takis Makatounakis, Joseph Papamatheakis, Androniki Kretsovali
Promyelocytic leukemia protein (PML), the main constituent of PML nuclear bodies, regulates various physiological processes in different cell types. However, little is known about its functions in embryonic stem cells (ESC). Here, we report that PML contributes to ESC self-renewal maintenance by controlling cell-cycle progression and sustaining the expression of crucial pluripotency factors. Transcriptomic analysis and gain- or loss-of-function approaches showed that PML-deficient ESC exhibit morphological, metabolic, and growth properties distinct to naive and closer to the primed pluripotent state...
March 30, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28392219/glycolysis-optimized-conditions-enhance-maintenance-of-regenerative-integrity-in-mouse-spermatogonial-stem-cells-during-long-term-culture
#11
Aileen R Helsel, Melissa J Oatley, Jon M Oatley
The application of spermatogonial stem cell (SSC) transplantation for regenerating male fertility requires amplification of SSC number in vitro during which the integrity to re-establish spermatogenesis must be preserved. Conventional conditions supporting proliferation of SSCs from mouse pups have been the basis for developing methodology with adult human cells but are unrefined. We found that the integrity to regenerate spermatogenesis after transplantation declines with advancing time in primary cultures of pup SSCs and that the efficacy of deriving cultures from adult SSCs is limited with conventional conditions...
March 24, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28392220/modeling-developmental-and-tumorigenic-aspects-of-trilateral-retinoblastoma-via-human-embryonic-stem-cells
#12
Yishai Avior, Elyad Lezmi, Dorit Yanuka, Nissim Benvenisty
Human embryonic stem cells (hESCs) provide a platform for studying human development and understanding mechanisms underlying diseases. Retinoblastoma-1 (RB1) is a key regulator of cell cycling, of which biallelic inactivation initiates retinoblastoma, the most common congenital intraocular malignancy. We developed a model to study the role of RB1 in early development and tumor formation by generating RB1-null hESCs using CRISPR/Cas9. RB1(-/-) hESCs initiated extremely large teratomas, with neural expansions similar to those of trilateral retinoblastoma tumors, in which retinoblastoma is accompanied by intracranial neural tumors...
March 22, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28410643/high-throughput-and-cost-effective-characterization-of-induced-pluripotent-stem-cells
#13
Matteo D'Antonio, Grace Woodruff, Jason L Nathanson, Agnieszka D'Antonio-Chronowska, Angelo Arias, Hiroko Matsui, Roy Williams, Cheryl Herrera, Sol M Reyna, Gene W Yeo, Lawrence S B Goldstein, Athanasia D Panopoulos, Kelly A Frazer
Reprogramming somatic cells to induced pluripotent stem cells (iPSCs) offers the possibility of studying the molecular mechanisms underlying human diseases in cell types difficult to extract from living patients, such as neurons and cardiomyocytes. To date, studies have been published that use small panels of iPSC-derived cell lines to study monogenic diseases. However, to study complex diseases, where the genetic variation underlying the disorder is unknown, a sizable number of patient-specific iPSC lines and controls need to be generated...
April 11, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28410642/ipscore-a-resource-of-222-ipsc-lines-enabling-functional-characterization-of-genetic-variation-across-a-variety-of-cell-types
#14
Athanasia D Panopoulos, Matteo D'Antonio, Paola Benaglio, Roy Williams, Sherin I Hashem, Bernhard M Schuldt, Christopher DeBoever, Angelo D Arias, Melvin Garcia, Bradley C Nelson, Olivier Harismendy, David A Jakubosky, Margaret K R Donovan, William W Greenwald, KathyJean Farnam, Megan Cook, Victor Borja, Carl A Miller, Jonathan D Grinstein, Frauke Drees, Jonathan Okubo, Kenneth E Diffenderfer, Yuriko Hishida, Veronica Modesto, Carl T Dargitz, Rachel Feiring, Chang Zhao, Aitor Aguirre, Thomas J McGarry, Hiroko Matsui, He Li, Joaquin Reyna, Fangwen Rao, Daniel T O'Connor, Gene W Yeo, Sylvia M Evans, Neil C Chi, Kristen Jepsen, Naoki Nariai, Franz-Josef Müller, Lawrence S B Goldstein, Juan Carlos Izpisua Belmonte, Eric Adler, Jeanne F Loring, W Travis Berggren, Agnieszka D'Antonio-Chronowska, Erin N Smith, Kelly A Frazer
Large-scale collections of induced pluripotent stem cells (iPSCs) could serve as powerful model systems for examining how genetic variation affects biology and disease. Here we describe the iPSCORE resource: a collection of systematically derived and characterized iPSC lines from 222 ethnically diverse individuals that allows for both familial and association-based genetic studies. iPSCORE lines are pluripotent with high genomic integrity (no or low numbers of somatic copy-number variants) as determined using high-throughput RNA-sequencing and genotyping arrays, respectively...
April 11, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28402835/ipsc-derived-retina-transplants-improve-vision-in-rd1-end-stage-retinal-degeneration-mice
#15
Michiko Mandai, Momo Fujii, Tomoyo Hashiguchi, Genshiro A Sunagawa, Shin-Ichiro Ito, Jianan Sun, Jun Kaneko, Junki Sho, Chikako Yamada, Masayo Takahashi
No abstract text is available yet for this article.
April 11, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28366456/in%C3%A2-vitro-generation-of-vascular-wall-resident-multipotent-stem-cells-of%C3%A2-mesenchymal-nature-from-murine-induced-pluripotent-stem-cells
#16
Jennifer Steens, Melanie Zuk, Mohamed Benchellal, Lea Bornemann, Nadine Teichweyde, Julia Hess, Kristian Unger, André Görgens, Hannes Klump, Diana Klein
The vascular wall (VW) serves as a niche for mesenchymal stem cells (MSCs). In general, tissue-specific stem cells differentiate mainly to the tissue type from which they derive, indicating that there is a certain code or priming within the cells as determined by the tissue of origin. Here we report the in vitro generation of VW-typical MSCs from induced pluripotent stem cells (iPSCs), based on a VW-MSC-specific gene code. Using a lentiviral vector expressing the so-called Yamanaka factors, we reprogrammed tail dermal fibroblasts from transgenic mice containing the GFP gene integrated into the Nestin-locus (NEST-iPSCs) to facilitate lineage tracing after subsequent MSC differentiation...
April 11, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28366455/sporadic-als-astrocytes-induce-neuronal-degeneration-in%C3%A2-vivo
#17
Kun Qian, Hailong Huang, Andrew Peterson, Baoyang Hu, Nicholas J Maragakis, Guo-Li Ming, Hong Chen, Su-Chun Zhang
Astrocytes from familial amyotrophic lateral sclerosis (ALS) patients or transgenic mice are toxic specifically to motor neurons (MNs). It is not known if astrocytes from sporadic ALS (sALS) patients cause MN degeneration in vivo and whether the effect is specific to MNs. By transplanting spinal neural progenitors, derived from sALS and healthy induced pluripotent stem cells (iPSCs), into the cervical spinal cord of adult SCID mice for 9 months, we found that differentiated human astrocytes were present in large areas of the spinal cord, replaced endogenous astrocytes, and contacted neurons to a similar extent...
April 11, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28366454/postnatal-calvarial-skeletal-stem-cells-expressing-prx1-reside-exclusively-in%C3%A2-the-calvarial-sutures-and-are-required-for-bone-regeneration
#18
Katarzyna Wilk, Shu-Chi A Yeh, Luke J Mortensen, Sasan Ghaffarigarakani, Courtney M Lombardo, Seyed Hossein Bassir, Zahra A Aldawood, Charles P Lin, Giuseppe Intini
Post-natal skeletal stem cells expressing PRX1 (pnPRX1+) have been identified in the calvaria and in the axial skeleton. Here we characterize the location and functional capacity of the calvarial pnPRX1(+) cells. We found that pnPRX1(+) reside exclusively in the calvarial suture niche and decrease in number with age. They are distinct from preosteoblasts and osteoblasts of the sutures, respond to WNT signaling in vitro and in vivo by differentiating into osteoblasts, and, upon heterotopic transplantation, are able to regenerate bone...
April 11, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28366453/genetic-correction-of-sod1-mutant-ipscs-reveals-erk-and-jnk-activated-ap1-as-a-driver-of-neurodegeneration-in-amyotrophic-lateral-sclerosis
#19
Akshay Bhinge, Seema C Namboori, Xiaoyu Zhang, Antonius M J VanDongen, Lawrence W Stanton
Although mutations in several genes with diverse functions have been known to cause amyotrophic lateral sclerosis (ALS), it is unknown to what extent causal mutations impinge on common pathways that drive motor neuron (MN)-specific neurodegeneration. In this study, we combined induced pluripotent stem cells-based disease modeling with genome engineering and deep RNA sequencing to identify pathways dysregulated by mutant SOD1 in human MNs. Gene expression profiling and pathway analysis followed by pharmacological screening identified activated ERK and JNK signaling as key drivers of neurodegeneration in mutant SOD1 MNs...
April 11, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28344005/mir-342-5p-regulates-neural-stem-cell-proliferation-and-differentiation-downstream-to-notch-signaling-in-mice
#20
Fang Gao, Yu-Fei Zhang, Zheng-Ping Zhang, Luo-An Fu, Xiu-Li Cao, Yi-Zhe Zhang, Chen-Jun Guo, Xian-Chun Yan, Qin-Chuan Yang, Yi-Yang Hu, Xiang-Hui Zhao, Ya-Zhou Wang, Sheng-Xi Wu, Gong Ju, Min-Hua Zheng, Hua Han
Notch signaling is critically involved in neural development, but the downstream effectors remain incompletely understood. In this study, we cultured neurospheres from Nestin-Cre-mediated conditional Rbp-j knockout (Rbp-j cKO) and control embryos and compared their miRNA expression profiles using microarray. Among differentially expressed miRNAs, miR-342-5p showed upregulated expression as Notch signaling was genetically or pharmaceutically interrupted. Consistently, the promoter of the miR-342-5p host gene, the Ena-vasodilator stimulated phosphoprotein-like (Evl), was negatively regulated by Notch signaling, probably through HES5...
April 11, 2017: Stem Cell Reports
journal
journal
47770
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"