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stem cell disease modelling

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https://www.readbyqxmd.com/read/29667027/neonatal-overfeeding-impairs-differentiation-potential-of-mice-subcutaneous-adipose-mesenchymal-stem-cells
#1
Isabelle Dias, Ísis Salviano, André Mencalha, Simone Nunes de Carvalho, Alessandra Alves Thole, Laís Carvalho, Erika Cortez, Ana Carolina Stumbo
Nutritional changes in the development (intrauterine life and postnatal period) may trigger long-term pathophysiological complications such as obesity and cardiovascular disease. Metabolic programming leads to organs and tissues modifications, including adipose tissue, with increased lipogenesis, production of inflammatory cytokines, and decreased glucose uptake. However, stem cells participation in adipose tissue dysfunctions triggered by overfeeding during lactation has not been elucidated. Therefore, this study was the first to evaluate the effect of metabolic programming on adipose mesenchymal stem cells (ASC) from mice submitted to overfeeding during lactation, using the litter reduction model...
April 17, 2018: Stem Cell Reviews
https://www.readbyqxmd.com/read/29667006/establishment-and-characterization-of-a-c57bl-6-mouse-model-of-bone-metastasis-of-breast-cancer
#2
Toru Hiraga, Tadashi Ninomiya
Bone is one of the most common sites of metastasis in patients with advanced breast cancer; however, the mechanisms of bone metastasis remain to be fully elucidated. Animal models are essential research tools for investigating the mechanisms of diseases and drug actions. To date, there have only been a few reports in which C57BL/6 mice were used for the study of bone metastases of breast cancer. In the current study, we found that intracardiac inoculation of C57BL/6 mouse-derived parental E0771 breast cancer cells (E0771/Pa) frequently lead to bone metastases in C57BL/6 mice within 2 weeks...
April 17, 2018: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/29666931/genome-editing-and-induced-pluripotent-stem-cell-technologies-for-personalized-study-of-cardiovascular-diseases
#3
REVIEW
Young Wook Chun, Matthew D Durbin, Charles C Hong
PURPOSE OF REVIEW: The goal of this review is to highlight the potential of induced pluripotent stem cell (iPSC)-based modeling as a tool for studying human cardiovascular diseases. We present some of the current cardiovascular disease models utilizing genome editing and patient-derived iPSCs. RECENT FINDINGS: The incorporation of genome-editing and iPSC technologies provides an innovative research platform, providing novel insight into human cardiovascular disease at molecular, cellular, and functional level...
April 17, 2018: Current Cardiology Reports
https://www.readbyqxmd.com/read/29666833/resolving-the-coffey-paradox-what-does-the-androgen-receptor-do-in-normal-vs-malignant-prostate-epithelial-cells
#4
REVIEW
John T Isaacs
Donald Straley Coffey completed his 85 year life's journey on November 9, 2017. In his wake, he left a legion of inspired and loyal students, fellows, and faculty colleagues from all over the world to carry on his passion both for life in general and his 50 year quest to conquer cancer. Early in his career, Dr. Coffey developed a series of animal models to study how androgen regulates the growth of both normal and abnormal prostatic epithelium. As part of these early studies, Dr. Coffey uncovered a paradox in that anti-androgen treatment given at the "wrong" time paradoxically enhanced, not inhibited, normal prostate growth...
2018: American Journal of Clinical and Experimental Urology
https://www.readbyqxmd.com/read/29666786/modeling-neuropsychiatric-and-neurodegenerative-diseases-with-induced-pluripotent-stem-cells
#5
REVIEW
Elizabeth A LaMarca, Samuel K Powell, Schahram Akbarian, Kristen J Brennand
Human-induced pluripotent stem cells (hiPSCs) have revolutionized our ability to model neuropsychiatric and neurodegenerative diseases, and recent progress in the field is paving the way for improved therapeutics. In this review, we discuss major advances in generating hiPSC-derived neural cells and cutting-edge techniques that are transforming hiPSC technology, such as three-dimensional "mini-brains" and clustered, regularly interspersed short palindromic repeats (CRISPR)-Cas systems. We examine specific examples of how hiPSC-derived neural cells are being used to uncover the pathophysiology of schizophrenia and Parkinson's disease, and consider the future of this groundbreaking research...
2018: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29666172/genetic-editing-of-colonic-organoids-provides-a-molecularly-distinct-and-orthotopic-preclinical-model-of-serrated-carcinogenesis
#6
Tamsin R M Lannagan, Young K Lee, Tongtong Wang, Jatin Roper, Mark L Bettington, Lochlan Fennell, Laura Vrbanac, Lisa Jonavicius, Roshini Somashekar, Krystyna Gieniec, Miao Yang, Jia Q Ng, Nobumi Suzuki, Mari Ichinose, Josephine A Wright, Hiroki Kobayashi, Tracey L Putoczki, Yoku Hayakawa, Simon J Leedham, Helen E Abud, Ömer H Yilmaz, Julie Marker, Sonja Klebe, Pratyaksha Wirapati, Siddhartha Mukherjee, Sabine Tejpar, Barbara A Leggett, Vicki L J Whitehall, Daniel L Worthley, Susan L Woods
OBJECTIVE: Serrated colorectal cancer (CRC) accounts for approximately 25% of cases and includes tumours that are among the most treatment resistant and with worst outcomes. This CRC subtype is associated with activating mutations in the mitogen-activated kinase pathway gene, BRAF , and epigenetic modifications termed the CpG Island Methylator Phenotype, leading to epigenetic silencing of key tumour suppressor genes. It is still not clear which (epi-)genetic changes are most important in neoplastic progression and we begin to address this knowledge gap herein...
April 17, 2018: Gut
https://www.readbyqxmd.com/read/29665657/recent-advances-in-the-diagnosis-and-management-of-primary-myelofibrosis
#7
Katsuto Takenaka, Kazuya Shimoda, Koichi Akashi
Primary myelofibrosis (PMF) is a myeloproliferative neoplasm (MPN) in which dysregulation of the Janus kinase/signal transducers and activators of transcription (JAK/STAT) signaling pathways is the major pathogenic mechanism. Most patients with PMF carry a driver mutation in the JAK2, MPL (myeloproliferative leukemia), or CALR (calreticulin) genes. Mutations in epigenetic regulators and RNA splicing genes may also occur, and play critical roles in PMF disease progression. Based on revised World Health Organization diagnostic criteria for MPNs, both screening for driver mutations and bone marrow biopsy are required for a specific diagnosis...
April 20, 2018: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29665439/hyaluronic-acid-conjugated-nanoparticle-delivery-of-sirna-against-twist-reduces-tumor-burden-and-enhances-sensitivity-to-cisplatin-in-ovarian-cancer
#8
Sophia A Shahin, Ruining Wang, Shirleen I Simargi, Altagracia Contreras, Liliana Parra, Louise Qu, Wei Wen, Thanh Dellinger, Juli Unternaehrer, Fuyuhiko Tamanoi, Jeffrey I Zink, Carlotta A Glackin
TWIST protein is critical to development and is activated in many cancers. TWIST regulates epithelial-mesenchymal transition, and is linked to angiogenesis, metastasis, cancer stem cell phenotype, and drug resistance. The majority of epithelial ovarian cancer (EOC) patients with metastatic disease respond well to first-line chemotherapy but most relapse with disease that is both metastatic and drug resistant, leading to a five-year survival rate under 20%. We are investigating the role of TWIST in mediating these relapses...
April 14, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29663886/microrna-regulation-along-the-course-of-cellular-reprogramming-to-pluripotency
#9
M Ishtiaq, M Waseem, R Mehmood
Generation of patient-specific stem cells has been a long-held aim of many developmental biologists. Apart from providing a source for stem cell therapies, these cells have the potential to be utilized in a number of scenarios like disease modeling, drug screening and studying normal development. Various approaches have been used to reprogram terminally differentiated cells to a pluripotent state with varying efficiencies and limitations. The nuclear transfer had been the most successful method for reprogramming until recently...
April 15, 2018: Current Molecular Medicine
https://www.readbyqxmd.com/read/29662652/guided-bone-regeneration-using-a-bone-tissue-engineering-complex-consisting-of-a-poly-dl-lactide-membrane-and-bone-mesenchymal-stem-cells
#10
Dahui Wang, Yifeng Lin, Lian Chen, Yueqiang Mo, Peng Huang, Ruixue Ma
Developmental dysplasia of the hip (DDH) is one of the most common diseases encountered in pediatric orthopedic departments. Current treatment strategies seek to improve acetabular coverage, the principal defect of acetabular dysplasia, but are not very successful. We developed a guided bone regeneration (GBR) strategy to improve acetabular coverage via bone tissue engineering (BTE). Poly- dl -lactide (PDLLA) membranes were seeded with bone marrow mesenchymal stem cells (BMSCs) to form a BTE complex, which was then implanted into the superior margin of the acetabulum in a rabbit DDH model...
March 27, 2018: Oncotarget
https://www.readbyqxmd.com/read/29661755/a-cd123-targeting-antibody-drug-conjugate-imgn632-designed-to-eradicate-aml-while-sparing-normal-bone-marrow-cells
#11
Yelena Kovtun, Gregory E Jones, Sharlene Adams, Lauren Harvey, Charlene A Audette, Alan Wilhelm, Chen Bai, Lingyun Rui, Rassol Laleau, Fenghua Liu, Olga Ab, Yulius Setiady, Nicholas C Yoder, Victor S Goldmacher, Ravi V J Chari, Jan Pinkas, Thomas Chittenden
The outlook for patients with refractory/relapsed acute myeloid leukemia (AML) remains poor, with conventional chemotherapeutic treatments often associated with unacceptable toxicities, including severe infections due to profound myelosuppression. Thus there exists an urgent need for more effective agents to treat AML that confer high therapeutic indices and favorable tolerability profiles. Because of its high expression on leukemic blast and stem cells compared with normal hematopoietic stem cells and progenitors, CD123 has emerged as a rational candidate for molecularly targeted therapeutic approaches in this disease...
April 24, 2018: Blood Advances
https://www.readbyqxmd.com/read/29661566/lichen-planopilaris-and-frontal-fibrosing-alopecia-as-model-epithelial-stem-cell-diseases
#12
REVIEW
Matthew J Harries, Francisco Jimenez, Ander Izeta, Jonathan Hardman, Sreejith Parameswara Panicker, Enrique Poblet, Ralf Paus
Inflammation-associated, irreversible damage to epithelial stem cells (eSCs) of the hair follicle in their immunologically privileged niche lies at the heart of scarring alopecia, which causes permanent difficult-to-treat hair loss. We propose that the two most common and closely related forms, lichen planopilaris (LPP) and frontal fibrosing alopecia (FFA), provide excellent model diseases for studying the biology and pathology of adult human eSCs in an easily accessible human mini-organ. Emphasising the critical roles for interferon (IFN)-γ and peroxisome proliferator-activated receptor (PPAR)-γ-mediated signalling in immune privilege (IP) collapse and epithelial-mesenchymal transition (EMT) of these eSCs respectively, we argue that these pathways deserve therapeutic targeting in the future management of LPP/FFA and other eSC diseases associated with IP collapse and EMT...
April 13, 2018: Trends in Molecular Medicine
https://www.readbyqxmd.com/read/29660606/generation-of-induced-pluripotent-stem-cells-from-a-patient-with-best-dystrophy-carrying-11q12-3-best1-vmd2-mutation
#13
Chih-Chien Hsu, Huai-En Lu, Jen-Hua Chuang, Yu-Ling Ko, Yi-Ching Tsai, Hsiao-Yun Tai, Aliaksandr A Yarmishyn, De-Kuang Hwang, Mong-Lien Wang, Yi-Ping Yang, Shih-Jen Chen, Chi-Hsien Peng, Shih-Hwa Chiou, Tai-Chi Lin
Best disease (BD), also termed Best vitelliform macular dystrophy (BVMD), is a juvenile-onset form of macular degeneration and central visual loss. In this report, we generated an induced pluripotent stem cell (iPSC) line, TVGH-iPSC-012-04, from the peripheral blood mononuclear cells of a female patient with BD by using the Sendai virus delivery system. The resulting iPSCs retained the disease-causing DNA mutation, expressed pluripotent markers and could differentiate into three germ layers. We believe that BD patient-specific iPSCs provide a powerful in vitro model for evaluating the pathological phenotypes of the disease...
April 3, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29658944/an-in-vivo-model-of-functional-and-vascularized-human-brain-organoids
#14
Abed AlFatah Mansour, J Tiago Gonçalves, Cooper W Bloyd, Hao Li, Sarah Fernandes, Daphne Quang, Stephen Johnston, Sarah L Parylak, Xin Jin, Fred H Gage
Differentiation of human pluripotent stem cells to small brain-like structures known as brain organoids offers an unprecedented opportunity to model human brain development and disease. To provide a vascularized and functional in vivo model of brain organoids, we established a method for transplanting human brain organoids into the adult mouse brain. Organoid grafts showed progressive neuronal differentiation and maturation, gliogenesis, integration of microglia, and growth of axons to multiple regions of the host brain...
April 16, 2018: Nature Biotechnology
https://www.readbyqxmd.com/read/29658608/ipsc%C3%A2-msc-inhibition-assessment-in-raw-264-7-cells-following-oxygen-and-glucose-deprivation-reveals-a-distinct-function-for-cardiopulmonary-resuscitation
#15
Yi Yu, Dongping Wang, Hui Li, Yujie Liu, Zhao Xiang, Junlin Wu, Xiaoli Jing
Hypoxia is a serious stress state. The nervous system is less tolerant to hypoxia, and cell death due to hypoxia is irreversible. With the incidence of cardiovascular disease gradually increasing, the sudden cardiac death rate is additionally increasing. Although cardiopulmonary resuscitation (CPR) is an important development, recovery is frequently poor. In a successful recovery population, ~40% of the population was in a vegetative state or subsequently succumbed to their condition, and ~20% had brain damage...
April 11, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29658077/in-vivo-experimental-study-of-biological-compatibility-of-tissue-engineered-tracheal-construct-in-laboratory-primates
#16
I V Gilevich, A S Sotnichenko, D D Karal-Ogly, E A Gubareva, E V Kuevda, I S Polyakov, B A Lapin, S V Orlov, V A Porkhanov, V P Chekhonin
Biological compatibility of a tissue engineered construct of the trachea (synthetic scaffold) and allogenic mesenchymal stem cells was studied on laboratory Papio hamadryas primates. Subcutaneous implantation and orthotopic transplantations of tissue engineered constructs were carried out. Histological studies of the construct showed chaotically located filaments and mononuclear cells fixed to them. Development of a fine connective tissue capsule was found at the site of subcutaneous implantation of the tissue engineered construct...
April 16, 2018: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29657091/injectable-polypeptide-hydrogels-via-methionine-modification-for-neural-stem-cell-delivery
#17
A L Wollenberg, T M O'Shea, J H Kim, A Czechanski, L G Reinholdt, M V Sofroniew, T J Deming
Injectable hydrogels with tunable physiochemical and biological properties are potential tools for improving neural stem/progenitor cell (NSPC) transplantation to treat central nervous system (CNS) injury and disease. Here, we developed injectable diblock copolypeptide hydrogels (DCH) for NSPC transplantation that contain hydrophilic segments of modified l-methionine (Met). Multiple Met-based DCH were fabricated by post-polymerization modification of Met to various functional derivatives, and incorporation of different amino acid comonomers into hydrophilic segments...
April 5, 2018: Biomaterials
https://www.readbyqxmd.com/read/29656244/human-organoid-cultures-transformative-new-tools-for-human-virus-studies
#18
REVIEW
Sasirekha Ramani, Sue E Crawford, Sarah E Blutt, Mary K Estes
Studies of human infectious diseases have been limited by the paucity of functional models that mimic normal human physiology and pathophysiology. Recent advances in the development of multicellular, physiologically active organotypic cultures produced from embryonic and pluripotent stem cells, as well as from stem cells isolated from biopsies and surgical specimens are allowing unprecedented new studies and discoveries about host-microbe interactions. Here, we summarize recent developments in the use of organoids for studying human viral pathogens, including intestinal infections with human rotavirus, norovirus, enteroviruses and adenoviruses (intestinal organoids and enteroids), neuronal infections with Zika virus (cerebral organoids) and respiratory infections with respiratory syncytial virus in (lung bud organoids)...
April 12, 2018: Current Opinion in Virology
https://www.readbyqxmd.com/read/29656073/protective-therapeutic-effects-of-peptide-nanofiber-and-hyaluronic-acid-hybrid-membrane-in-in-vivo-osteoarthritis-model
#19
Elif Arslan, Melis Sardan Ekiz, Cagla Eren Cimenci, Nuray Can, M Hanifi Gemci, Huseyin Ozkan, Mustafa O Guler, Ayse B Tekinay
Osteoarthritis (OA) is a condition where tissue function is lost through a combination of secondary inflammation and deterioration in articular cartilage. One of the most common causes of OA is age-related tissue impairment because of wear and tear due to mechanical erosion. Hyaluronic acid-based viscoelastic supplements have been widely used for the treatment of knee injuries. However, the current formulations of hyaluronic acid are unable to provide efficient healing and recovery. Here, a nanofiber-hyaluronic acid membrane system that was prepared by using a quarter of the concentration of commercially available hyaluronic acid supplement, Hyalgan® , was used for the treatment of an osteoarthritis model, and Synvisc® , which is another commercially available hyaluronic acid containing viscoelastic supplement, was used as a control...
April 12, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29655988/tissue-engineering-still-facing-a-long-way-ahead
#20
REVIEW
Parichehr Hassanzadeh, Fatemeh Atyabi, Rassoul Dinarvand
Tissue engineering (TE) has provided promising perspectives to overcome the limited efficiency of the conventional treatment options or organ transplantation. Considerable advances in stem cell therapies and biomaterials science and development of delivery systems capable to mimic the production of growth factors may offer treatment breakthroughs in a variety of diseases. Meanwhile, proper vascularization, creation of the complex tissues, tissue quality, functional integration between the graft and host tissues, and the potential risks of chromosomal instability, mutations, tumorigenesis, or unexpected events have remained challenging...
April 12, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
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