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https://www.readbyqxmd.com/read/29909492/modelling-glioma-invasion-using-3d-bioprinting-and-scaffold-free-3d-culture
#1
Derek M van Pel, Kaori Harada, Dandan Song, Christian C Naus, Wun Chey Sin
Glioma is a highly aggressive form of brain cancer, with some subtypes having 5-year survival rates of less than 5%. Tumour cell invasion into the surrounding parenchyma seems to be the primary driver of these poor outcomes, as most gliomas recur within 2 cm of the original surgically-resected tumour. Many current approaches to the development of anticancer therapy attempt to target genetic weaknesses in a particular cancer, but may not take into account the microenvironment experienced by a tumour and the patient-specific genetic differences in susceptibility to treatment...
June 16, 2018: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/29908335/platelet-derived-growth-factor-coated-decellularized-meniscus-scaffold-for-integrative-healing-of-meniscus-tears
#2
Kwang Il Lee, Merissa Olmer, Jihye Baek, Darryl D D'Lima, Martin K Lotz
The aim of this study was to examine the potential of platelet-derived growth factor (PDGF)-coated decellularized meniscus scaffold in mediating integrative healing of meniscus tears by inducing endogenous cell migration. Fresh bovine meniscus was chemically decellularized and covalently conjugated with heparin and PDGF-BB. In vitro PDGF release kinetics was measured. The scaffold was transplanted into experimental tears in avascular bovine meniscus explants and cultured for 2 and 4 weeks. The number migrating and proliferating cells at the borderline between the scaffold and injured explant and PDGF receptor-β (PDGFR β) expressing cells were counted...
June 13, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29908162/isolation-and-characterization-of-endothelial-colony-forming-cells-from-mononuclear-cells-of-rat-bone-marrow
#3
Shukui Yu, Zhongxuan Li, Wei Zhang, Zhengde Du, Ke Liu, Denghua Yang, Shusheng Gong
Transplantation of bone marrow-derived endothelial progenitor cells (BM-EPCs) has been used as a therapeutic strategy for vascular repair. However, it remains controversial whether BM-EPCs exhibit clonal endothelial colony-forming cell (ECFC) capacity, a characteristic of true EPCs. The aim of this study was to isolate and explore the cellular properties of BM-ECFCs. We isolated BM-ECFCs from rat bone marrow with high purity via an optimized method. This approach involved the removal of selective colonies based on the conventional differential adhesive culture method used to isolate ECFCs from peripheral and umbilical cord blood...
June 13, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29907883/b-cell-development-is-critically-dependent-on-nfatc1-activity
#4
Sabrina Giampaolo, Gabriela Wójcik, Stefan Klein-Hessling, Edgar Serfling, Amiya K Patra
B cell development in bone marrow is a precisely regulated complex process. Through successive stages of differentiation, which are regulated by a multitude of signaling pathways and an array of lineage-specific transcription factors, the common lymphoid progenitors ultimately give rise to mature B cells. Similar to early thymocyte development in the thymus, early B cell development in bone marrow is critically dependent on IL-7 signaling. During this IL-7-dependent stage of differentiation, several transcription factors, such as E2A, EBF1, and Pax5, among others, play indispensable roles in B lineage specification and maintenance...
June 15, 2018: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/29907810/asxl1-ezh2-mutations-promote-clonal-expansion-of-neoplastic-hsc-and-impair-erythropoiesis-in-pmf
#5
Ioanna Triviai, Silke Zeschke, Jan Rentel, Marios Spanakis, Theo Scherer, Razif Gabdoulline, Victoria Panagiota, Felicitas Thol, Michael Heuser, Carol Stocking, Nicolaus Kröger
Primary myelofibrosis (PMF) is a hematopoietic stem cell (HSC) disease, characterized by aberrant differentiation of all myeloid lineages and profound disruption of the bone marrow niche. PMF samples carry several mutations, but their cell origin and hierarchy in regulating the different waves of clonal and aberrant myeloproliferation from the prime HSC compartment is poorly understood. Genotyping of >2000 colonies from CD133+HSC and progenitors from PMF patients confirmed the complex genetic heterogeneity within the neoplastic population...
June 15, 2018: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/29907129/a-pivotal-role-of-bex1-in-liver-progenitor-cell-expansion-in-mice
#6
Yuting Gu, Weiting Wei, Yiji Cheng, Bing Wan, Xinyuan Ding, Hui Wang, Yanyun Zhang, Min Jin
BACKGROUND: The activation and expansion of bipotent liver progenitor cells (LPCs) are indispensable for liver regeneration after severe or chronic liver injury. However, the underlying molecular mechanisms regulating LPCs and LPC-mediated liver regeneration remain elusive. METHODS: Hepatic brain-expressed X-linked 1 (BEX1) expression was evaluated using microarray screening, real-time polymerase chain reaction, immunoblotting and immunofluorescence. LPC activation and liver injury were studied following a choline-deficient, ethionine-supplemented (CDE) diet in wild-type (WT) and Bex1-/- mice...
June 15, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29905812/defective-cholesterol-metabolism-in-haematopoietic-stem-cells-promotes-monocyte-driven-atherosclerosis-in-rheumatoid-arthritis
#7
Dragana Dragoljevic, Michael J Kraakman, Prabhakara R Nagareddy, Devi Ngo, Waled Shihata, Helene L Kammoun, Alexandra Whillas, Man Kit Sam Lee, Annas Al-Sharea, Gerard Pernes, Michelle C Flynn, Graeme I Lancaster, Mark A Febbraio, Jaye Chin-Dusting, Beatriz Y Hanaoka, Ian P Wicks, Andrew J Murphy
Aim: Rheumatoid arthritis (RA) is associated with an approximately two-fold elevated risk of cardiovascular (CV)-related mortality. Patients with RA present with systemic inflammation including raised circulating myeloid cells, but fail to display traditional CV risk-factors, particularly dyslipidaemia. We aimed to explore if increased circulating myeloid cells is associated with impaired atherosclerotic lesion regression or altered progression in RA. Methods and results: Using flow cytometry, we noted prominent monocytosis, neutrophilia, and thrombocytosis in two mouse models of RA...
June 14, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29905527/adult-zebrafish-langerhans-cells-arise-from-hematopoietic-stem-progenitor-cells
#8
Sicong He, Jiahao Chen, Yunyun Jiang, Yi Wu, Lu Zhu, Wan Jin, Changlong Zhao, Tao Yu, Tienan Wang, Shuting Wu, Xi Lin, Jianan Y Qu, Zilong Wen, Wenqing Zhang, Jin Xu
The origin of Langerhans cells (LCs), which are skin epidermis-resident macrophages, remains unclear. Current lineage tracing of LCs largely relies on the promoter-Cre-LoxP system, which often gives rise to contradictory conclusions with different promoters. Thus, reinvestigation with an improved tracing method is necessary. Here, using a laser-mediated temporal-spatial resolved cell labeling method, we demonstrated that most adult LCs originated from the ventral wall of the dorsal aorta (VDA), an equivalent to the mouse aorta, gonads, and mesonephros (AGM), where both hematopoietic stem cells (HSCs) and non-HSC progenitors are generated...
June 15, 2018: ELife
https://www.readbyqxmd.com/read/29905012/quantitative-secretomics-reveals-extrinsic-signals-involved-in-human-pluripotent-stem-cell-cardiomyogenesis
#9
Hanna Wolling, Sarah A Konze, Anne Höfer, Jelena Erdmann, Andreas Pich, Robert Zweigerdt, Falk F R Buettner
Human pluripotent stem cells (hPSCs) can be differentiated in vitro into cardiomyocytes (CMs) but the molecular mechanisms behind this process are still not fully understood. In particular identification of morphogens remained elusive because the mass spectrometry (MS)-based identification of secreted proteins from cell culture supernatants is impeded by high levels of albumin present in common differentiation media. Thus we established an albumin-free cardiomyogenic differentiation medium and performed secretomics at seven different time points during in vitro differentiation...
June 14, 2018: Proteomics
https://www.readbyqxmd.com/read/29904797/hyaluronic-acid-hydrogels-incorporating-platelet-lysate-enhance-human-pulp-cell-proliferation-and-differentiation
#10
Leopoldina D F Almeida, Pedro S Babo, Cristiana R Silva, Márcia T Rodrigues, Josimeri Hebling, Rui L Reis, Manuela E Gomes
The restoration of dentine-pulp complex remains a challenge for dentists; nonetheless, it has been poorly addressed. An ideal system should modulate the host response, as well as enable the recruitment, proliferation and differentiation of relevant progenitor cells. Herein was proposed a photocrosslinkable hydrogel system based on hyaluronic acid (HA) and platelet lysate (PL). PL is a cocktail of growth factors (GFs) and cytokines involved in wound healing orchestration, obtained by the cryogenic processing of platelet concentrates, and was expected to provide the HA hydrogels specific biochemical cues to enhance pulp cells' recruitment, proliferation and differentiation...
June 14, 2018: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/29904155/moringin-induces-neural-differentiation-in-the-stem-cell-of-the-human-periodontal-ligament
#11
Letizia Romeo, Francesca Diomede, Agnese Gugliandolo, Domenico Scionti, Fabrizio Lo Giudice, Veronica Lanza Cariccio, Renato Iori, Placido Bramanti, Oriana Trubiani, Emanuela Mazzon
The therapeutic strategies for neurodegenerative diseases still represent a vast research field because of the lack of targeted, effective and resolutive treatment for neurodegenerative diseases. The use of stem cell-based therapy is an alternative approach that could lead to the replacement of damaged neuronal tissue. For this purpose, adult mesenchymal stem cells (MSC), including periodontal ligament stem cells (PDLSCs), could be very useful for their differentiation capacity, easy isolation and the ability to perform an autologous implant...
June 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29903938/induction-of-cd4-t-cell-memory-by-local-cellular-collectivity
#12
Michal Polonsky, Jacob Rimer, Amos Kern-Perets, Irina Zaretsky, Stav Miller, Chamutal Bornstein, Eyal David, Naama Meira Kopelman, Gil Stelzer, Ziv Porat, Benjamin Chain, Nir Friedman
Cell differentiation is directed by signals driving progenitors into specialized cell types. This process can involve collective decision-making, when differentiating cells determine their lineage choice by interacting with each other. We used live-cell imaging in microwell arrays to study collective processes affecting differentiation of naïve CD4+ T cells into memory precursors. We found that differentiation of precursor memory T cells sharply increases above a threshold number of locally interacting cells...
June 15, 2018: Science
https://www.readbyqxmd.com/read/29903894/novel-approaches-to-acute-myeloid-leukemia-immunotherapy
#13
Ofrat Beyar-Katz, Saar Gill
Acute myeloid leukemia (AML) is a rapidly progressive, poor-prognosis malignancy arising from hematopoietic stem/progenitor cells. The long history of successful use of allogeneic hematopoietic cell transplantation (alloHCT) in AML indicates that this disease is immunoresponsive, leading to optimism that novel immunotherapies such as bispecific antibodies, chimeric antigen receptor T cells, and immune checkpoint inhibitors will generate meaningful disease control. However, emerging data on the immunoevasive tactics employed by AML blasts at diagnosis and at relapse indicate that optimism must be tempered by an understanding of this essential paradox...
June 14, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29903757/iron-overload-impairs-normal-hematopoietic-stem-and-progenitor-cells-through-reactive-oxygen-species-and-shortens-survival-in-myelodysplastic-syndrome-mice
#14
Xin Jin, Xiaoyuan He, Xiaoli Cao, Ping Xu, Yi Xing, Songnan Sui, Luqiao Wang, Juanxia Meng, Wenyi Lu, Rui Cui, Hongyan Ni, Mingfeng Zhao
Accumulating clinical evidence implicates a suppressive effect on hematopoiesis in myelodysplastic syndrome patients with iron overload. However, how iron overload influences hematopoiesis in myelodysplastic syndrome remains unknown. Here, the RUNX1S291fs-transduced bone marrow mononuclear cells were yielded and transplanted into lethally irradiated recipient mice together with radioprotective bone marrow cells to generate myelodysplastic syndrome mice. Eight weeks post transplantation, the recipient mice were administered intraperitoneal injection of 0...
June 14, 2018: Haematologica
https://www.readbyqxmd.com/read/29903739/tbx20-is-required-in-mid-gestation-cardiomyocytes-and-plays-a-central-role-in-atrial-development
#15
Cornelis J Boogerd, Xiaoming Zhu, Ivy Aneas, Noboru J Sakabe, Lunfeng Zhang, Debora R Sobreira, Lindsey E Montefiori, Julius Bogomolovas, Amelia C Joslin, Bin Zhou, Ju Chen, Marcelo Nobrega, Sylvia M Evans
<u>Rationale:</u> Mutations in the transcription factor TBX20 are associated with congenital heart disease. Germline ablation of Tbx20 results in abnormal heart development and embryonic lethality by E9.5. As Tbx20 is expressed in multiple cell lineages required for myocardial development, including pharyngeal endoderm, cardiogenic mesoderm, endocardium, and myocardium, the cell type specific requirement for Tbx20 in early myocardial development remains to be explored. <u>Objective:</u> Here, we investigated roles of Tbx20 in mid-gestation cardiomyocytes for heart development...
June 14, 2018: Circulation Research
https://www.readbyqxmd.com/read/29903047/bone-marrow-characterization-in-copd-a-multi-level-network-analysis
#16
Nuria Toledo-Pons, Guillaume Noell, Andreas Jahn, Amanda Iglesias, Maria Antonia Duran, Julio Iglesias, Angel Rios, Sergio Scrimini, Rosa Faner, Orlando Gigirey, Alvar Agustí, Borja G Cosío
BACKGROUND: Bone marrow (BM) produces hematopoietic and progenitor cells that contribute to distant organ inflammation and repair. Chronic obstructive pulmonary disease (COPD) is characterized by defective lung repair. Yet, BM composition has not been previously characterized in COPD patients. METHODS: In this prospective and controlled study, BM was obtained by sternum fine-needle aspiration in 35 COPD patients and 25 healthy controls (10 smokers and 15 never-smokers)...
June 15, 2018: Respiratory Research
https://www.readbyqxmd.com/read/29902859/-research-progress-of-lgr5-positive-stem-cells-in-the-formation-of-organoid-in-3d-culture
#17
Q Q He, A Li, M H Wang, X Gao
Stem cell is critical to regeneration of tissue or organ of human. How to promote repair or regeneration in the tissues/organ using its pluripotency is always an important issue. Lgr5-possitive cell is one type of the stem cell-like cells capable of pluripotent differentiation in various tissues/organs of both humans and mice. Current study showed that single or small amount Lgr5-possitive stem cells can grow and form a plurality of organs in 3D culture system, and some organs can present similar biological and physiological properties with the progenitor they were derived...
June 7, 2018: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29902500/the-role-of-neuro-epithelial-like-and-radial-glial-stem-and-progenitor-cells-in-development-plasticity-and-repair
#18
REVIEW
Benjamin W Lindsey, Zachary J Hall, Aurélie Heuzé, Jean-Stéphane Joly, Vincent Tropepe, Jan Kaslin
Neural stem and progenitor cells (NSPCs) are the primary source of new neurons in the brain and serve critical roles in tissue homeostasis and plasticity throughout life. Within the vertebrate brain, NSPCs are located within distinct neurogenic niches differing in their location, cellular composition, and proliferative behaviour. Heterogeneity in the NSPC population is hypothesized to reflect varying capacities for neurogenesis, plasticity and repair between different neurogenic zones. Since the discovery of adult neurogenesis, studies have predominantly focused on the behaviour and biological significance of adult NSPCs (aNSPCs) in rodents...
June 11, 2018: Progress in Neurobiology
https://www.readbyqxmd.com/read/29902455/klf5-promoted-symmetric-cell-division-in-krt5-positive-keratinocytes-through-suppression-of-notch1-expression
#19
Caijun Liu, Shuo Yang, Ai Zheng, Huajing Wan
Stem cells or progenitor cells can undergo either asymmetric (ACD) or symmetric (SCD) cell division to produce appropriate number of themselves and differentiated daughter cells required for tissue regeneration. KRT5 positive keratinocyte is one of the progenitor cell types in epidermis. How ACD and SCD is balanced regulated in KRT5 positive cells are largely unclear. Herein, we demonstrated that in vitro cultured KRT5 positive keratinocytes could undergo either ACD or SCD. Silencing of KLF5 expression increased the ACD to SCD ratio, induced expression of KLF5 decreased the ACD to SCD ratio in KRT5 positive keratinocytes, and KLF5 inhibited ACD to SCD ratio through suppression of Notch1 expression...
June 11, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29902227/modeling-human-early-otic-sensory-cell-development-with-induced-pluripotent-stem-cells
#20
Hanae Lahlou, Alejandra Lopez-Juarez, Arnaud Fontbonne, Emmanuel Nivet, Azel Zine
The inner ear represents a promising system to develop cell-based therapies from human induced pluripotent stem cells (hiPSCs). In the developing ear, Notch signaling plays multiple roles in otic region specification and for cell fate determination. Optimizing hiPSC induction for the generation of appropriate numbers of otic progenitors and derivatives, such as hair cells, may provide an unlimited supply of cells for research and cell-based therapy. In this study, we used monolayer cultures, otic-inducing agents, Notch modulation, and marker expression to track early and otic sensory lineages during hiPSC differentiation...
2018: PloS One
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