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https://www.readbyqxmd.com/read/28646271/characterization-of-adipose-derived-stem-cells-following-burn-injury
#1
Anesh Prasai, Amina El Ayadi, Randy C Mifflin, Michael D Wetzel, Clark R Andersen, Heinz Redl, David N Herndon, Celeste C Finnerty
Severe burns induce a prolonged inflammatory response in subcutaneous adipose tissue that modulates signaling in adipose-derived stem cells (ASCs), which hold potential for healing burn wounds or generating skin substitutes. Using a 60% rat scald burn model, we conducted a series of experiments to determine which cells isolated from the adipose tissue produced inflammatory mediators and how these changes affect ASC fate and function. The stromal vascular fraction (SVF), adipocytes, and ASCs were isolated from adipose tissue at varying times up to 4 weeks postburn and from non-injured controls...
June 23, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28646022/nf1-hematopoietic-cells-accelerate-malignant-peripheral-nerve-sheath-tumor-development-without-altering-chemotherapy-response
#2
Rebecca D Dodd, Chang-Lung Lee, Tess Overton, Wesley Huang, William C Eward, Lixia Luo, Yan Ma, Davis R Ingram, Keila E Torres, Diana M Cardona, Alexander Lazar, David G Kirsch
Haploinsufficiency in the tumor suppressor NF1 contributes to the pathobiology of type 1 neurofibromatosis, but a related role has not been established in malignant peripheral nerve sheath tumors (MPNST) where NF1 mutations also occur. Patients with NF1-associated MPNST appear to have worse outcomes than patients with sporadic MPNST, but the mechanism underlying this correlation is not understood. To define the impact of stromal genetics on the biology of this malignancy, we developed unique mouse models that reflect the genetics of patient-associated MPNST...
June 23, 2017: Cancer Research
https://www.readbyqxmd.com/read/28645702/use-of-adipose-tissue-and-stromal-vascular-fraction-in-hand-surgery
#3
REVIEW
Iad Nseir, Flore Delaunay, Charles Latrobe, Albane Bonmarchand, Dorothée Coquerel-Beghin, Isabelle Auquit-Auckbur
Adipose tissue is an abundant source of various cell types including not only adipocytes, but also progenitor and endothelial cells from thestroma. Interest in adipose tissue has surged since the identification in 2001 of adipose-derived stem cells (ADSCs) and of the stromal vascular fraction (SVF) obtained from adipose tissue by enzymatic digestion and centrifugation. SVF has been proven effective in ensuring tissue regeneration, thus improving tissue trophicityand vascularisation. These effects have generated strong interest among both physicians and surgeons, particularly in the field of hand surgery...
June 20, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28645562/anti-myeloma-effects-of-ruxolitinib-combined-with-bortezomib-and-lenalidomide-a-rationale-for-jak-stat-pathway-inhibition-in-myeloma-patients
#4
Mariana B de Oliveira, Veruska L Fook-Alves, Angela I P Eugenio, Rodrigo C Fernando, Luiz Felipe G Sanson, Mariana F de Carvalho, Walter M T Braga, Faith E Davies, Gisele W B Colleoni
JAK proteins have been linked with survival and proliferation of multiple myeloma (MM) cells; therefore, JAK inhibition could be a therapeutic strategy for MM. We evaluated JAK1 and JAK2 expression in MM patients and the effects of JAK/STAT pathway inhibition on apoptosis, cell cycle, gene and protein expression in RPMI-8226 and U266 MM cell lines. 57% of patients presented overexpression of JAK2 and 27%, of JAK1. After treatment with ruxolitinib and bortezomib, RPMI-8226 and U266 presented 50% of cells in late apoptosis, reduction of anti-apoptotic genes expression and higher number of cells in SubG0 phase...
June 20, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28644976/biomaterials-that-promote-cell-cell-interactions-enhance-the-paracrine-function-of-mscs
#5
Taimoor H Qazi, David J Mooney, Georg N Duda, Sven Geissler
Mesenchymal stromal cells (MSCs) secrete paracrine factors that play crucial roles during tissue regeneration. Whether this paracrine function is influenced by the properties of biomaterials in general, and those used for cell delivery in particular, largely remains unexplored. Here, we investigated if three-dimensional culture in distinct microenvironments - nanoporous hydrogels (mean pore size ∼5 nm) and macroporous scaffolds (mean pore size ∼120 μm) - affects the secretion pattern of MSCs, and consequently leads to differential paracrine effects on target progenitor cells such as myoblasts...
June 18, 2017: Biomaterials
https://www.readbyqxmd.com/read/28644862/high-intensity-corneal-collagen-crosslinking-with-riboflavin-and-uva-in-rat-cornea
#6
Yirui Zhu, Peter S Reinach, Hanlei Zhu, Qiufan Tan, Qinxiang Zheng, Jia Qu, Wei Chen
Corneal collagen cross-linking (CXL) halts human corneal ectasias progression by increasing stromal mechanical stiffness. Although some reports describe that this procedure is effective in dealing with some infectious and immunologic corneal thinning diseases, there is a need for more animal models whose corneal thickness more closely resemble those occurring in these patients. To meet this need, we describe here high-intensity protocols that are safe and effective for obtaining CXL in rat corneas. Initially, a range of potentially effective UVA doses were evaluated based on their effectiveness in increasing tissue enzymatic resistance to dissolution...
2017: PloS One
https://www.readbyqxmd.com/read/28644145/colorectal-carcinoma-with-osseous-metaplasia
#7
Xibo Liu, Jinghong Xu, Lirong Chen
Osseous metaplasia (OM) is rarely observed in colorectal cancer (incidence < 0.4% in rectal cancer), where it has a non-specific clinical presentation and unknown pathogenesis. Here, we report three cases of colorectal carcinoma with OM and propose a new hypothesis. All three patients (two males and one female) were Chinese and had different sites of colorectal carcinoma with OM: rectum, sigmoid colon, and appendix. The pathologic diagnoses were serrated adenocarcinoma; moderately to poorly differentiated adenocarcinoma with micropapillary carcinoma and cribriform comedo-type adenocarcinoma; and mucinous adenocarcinoma, respectively...
June 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28643483/cell-engineered-nanovesicle-as-a-surrogate-inducer-of-contact-dependent-stimuli
#8
Junho Kim, Chugmin Han, Wonju Jo, Sehong Kang, Siwoo Cho, Dayeong Jeong, Yong Song Gho, Jaesung Park
Heterotypic interactions between cells are crucial in various biological phenomena. Particularly, stimuli that regulate embryonic stem cell (ESC) fate are often provided from neighboring cells. However, except for feeder cultures, no practical methods are identified that can provide ESCs with contact-dependent cell stimuli. To induce contact-dependent cell stimuli in the absence of living cells, a novel method that utilizes cell-engineered nanovesicles (CNVs) that are made by extruding living cells through microporous membranes is described...
June 23, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28642867/evaluation-of-the-effect-of-a-single-intra-articular-injection-of-allogeneic-neonatal-mesenchymal-stromal-cells-compared-to-oral-non-steroidal-anti-inflammatory-treatment-on-the-postoperative-musculoskeletal-status-and-gait-of-dogs-over-a-6-month-period-after
#9
Mathieu Taroni, Quentin Cabon, Marine Fèbre, Thibaut Cachon, Nathalie Saulnier, Claude Carozzo, Stéphane Maddens, Fabrice Labadie, Clément Robert, Eric Viguier
OBJECTIVE: Compare the clinical and pressure walkway gait evolution of dogs after a tibial plateau leveling osteotomy (TPLO) for a cranial cruciate ligament rupture (CrCLR) and treatment with either a 1-month course of non-steroidal anti-inflammatory drugs (NSAIDs) or a single postoperative intra-articular (IA) injection of allogeneic neonatal mesenchymal stromal cells (MSCs). STUDY DESIGN: Prospective, double-blinded, randomized, controlled, monocentric clinical study...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28642604/turning-the-tide-in-myelodysplastic-myeloproliferative-neoplasms
#10
REVIEW
Michael W N Deininger, Jeffrey W Tyner, Eric Solary
Myelodysplastic syndromes/myeloproliferative neoplasms (MDS/MPN) are aggressive myeloid malignancies recognized as a distinct category owing to their unique combination of dysplastic and proliferative features. Although current classification schemes still emphasize morphology and exclusionary criteria, disease-defining somatic mutations and/or germline predisposition alleles are increasingly incorporated into diagnostic algorithms. The developing picture suggests that phenotypes are driven mostly by epigenetic mechanisms that reflect a complex interplay between genotype, physiological processes such as ageing and interactions between malignant haematopoietic cells and the stromal microenvironment of the bone marrow...
June 23, 2017: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/28642279/role-of-myd88-signaling-in-the-imiquimod-induced-mouse-model-of-psoriasis-focus-on-innate-myeloid-cells
#11
Sara Costa, Olivia Marini, Dalila Bevilacqua, Anthony L DeFranco, Baidong Hou, Silvia Lonardi, William Vermi, Pamela Rodegher, Anna Panato, Franco Tagliaro, Clifford A Lowell, Marco A Cassatella, Giampiero Girolomoni, Patrizia Scapini
Psoriasis is a chronic skin disease associated with deregulated activation of immune cells and keratinocytes. In this study, we used the imiquimod (IMQ)-induced mouse model of psoriasis to dissect better the contribution of hematopoietic and skin-resident stromal cells to psoriasis development. The comparison of disease development in mice carrying the hematopoietic cell-specific deletion of MyD88 (Myd88(fl/fl)Vav-cre(+) mice) with mice carrying the total MyD88 deficiency (Myd88(-/-) mice), we show that the progression of skin and systemic inflammation, as well as of epidermal thickening, was completely dependent on MyD88 expression in hematopoietic cells...
June 22, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28640929/modulation-of-tumor-microenvironment-by-chemopreventive-natural-products
#12
REVIEW
Sin-Aye Park, Young-Joon Surh
The tumor microenvironment provides a niche in which cancer cells and their surrounding stromal cells reside and in which their interactions occur. The cross talk between cancer and stromal cells in the tumor microenvironment promotes many biological processes to support cancer cell growth, invasion, angiogenesis, and metastasis. Recently, not only cancer cells but also multiple types of surrounding stromal cells, including endothelial cells, immune cells, and fibroblasts in the tumor microenvironment, have been recognized to be attractive targets for reducing resistance to anticancer therapy and tumor recurrence...
June 22, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28640648/extracellular-vesicle-transfer-from-mesenchymal-stromal-cells-modulates-macrophage-function-in-acute-lung-injury-basic-science-and-clinical-implications
#13
Michael A Matthay
No abstract text is available yet for this article.
June 22, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28639900/the-novel-cxcr4-antagonist-prx177561-reduces-tumor-cell-proliferation-and-accelerates-cancer-stem-cell-differentiation-in-glioblastoma-preclinical-models
#14
Giovanni Luca Gravina, Andrea Mancini, Alessandro Colapietro, Flora Vitale, Antonella Vetuschi, Simona Pompili, Giulia Rossi, Francesco Marampon, Peter J Richardson, Lee Patient, Lee Patient, Stephen Burbidge, Claudio Festuccia
Glioblastoma is the most frequent and the most lethal primary brain tumor among adults. Standard of care is the association of radiotherapy with concomitant or adjuvant temozolomide. However, to date, recurrence is inevitable. The CXCL12/CXCR4 pathway is upregulated in the glioblastoma tumor microenvironment regulating tumor cell proliferation, local invasion, angiogenesis, and the efficacy of radio-chemotherapy. In this study, we evaluated the effects of the novel CXCR4 antagonist, PRX177561, in preclinical models of glioblastoma...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28639518/selective-laser-melting-enabled-electrospinning-introducing-complexity-within-electrospun-membranes
#15
Thomas E Paterson, Selina N Beal, Martin E Santocildes-Romero, Alfred T Sidambe, Paul V Hatton, Ilida Ortega Asencio
Additive manufacturing technologies enable the creation of very precise and well-defined structures that can mimic hierarchical features of natural tissues. In this article, we describe the development of a manufacturing technology platform to produce innovative biodegradable membranes that are enhanced with controlled microenvironments produced via a combination of selective laser melting techniques and conventional electrospinning. This work underpins the manufacture of a new generation of biomaterial devices that have significant potential for use as both basic research tools and components of therapeutic implants...
June 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28639291/perfusion-of-isolated-rat-kidney-with-mesenchymal-stromal-cells-extracellular-vesicles-prevents-ischaemic-injury
#16
Marilena Gregorini, Valeria Corradetti, Eleonora Francesca Pattonieri, Chiara Rocca, Samantha Milanesi, Andrea Peloso, Silvana Canevari, Loris De Cecco, Matteo Dugo, Maria Antonietta Avanzini, Melissa Mantelli, Marcello Maestri, Pasquale Esposito, Stefania Bruno, Carmelo Libetta, Antonio Dal Canton, Teresa Rampino
Kidney donation after circulatory death (DCD) is a less than ideal option to meet organ shortages. Hypothermic machine perfusion (HMP) with Belzer solution (BS) improves the viability of DCD kidneys, although the graft clinical course remains critical. Mesenchymal stromal cells (MSC) promote tissue repair by releasing extracellular vesicles (EV). We evaluated whether delivering MSC-/MSC-derived EV during HMP protects rat DCD kidneys from ischaemic injury and investigated the underlying pathogenic mechanisms...
June 21, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28638266/nuclear-expression-of-gs28-protein-a-novel-biomarker-that-predicts-prognosis-in-colorectal-cancers
#17
Sung Hak Lee, Hyung Jae Yoo, Do Eun Rim, Yinji Cui, Ahwon Lee, Eun Sun Jung, Seung Taek Oh, Jun Gi Kim, Oh-Joo Kwon, Su Young Kim, Seong-Whan Jeong
Aims: GS28 (Golgi SNARE protein, 28 kDa), a member of the soluble N-ethylmaleimide-sensitive factor attachment protein receptors (SNARE) protein family, plays a critical role in mammalian endoplasmic reticulum (ER)-Golgi or intra-Golgi vesicle transport. To date, few researches on the GS28 protein in human cancer tissues have been reported. In this study, we assessed the prognostic value of GS28 in patients with colorectal cancer (CRC). Methods and results: We screened for GS28 expression using immunohistochemistry in 230 surgical CRC specimens...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28638075/mycobacterial-heat-shock-protein-65-mediated-metabolic-shift-in-decidualization-of-human-endometrial-stromal-cells
#18
Elavarasan Subramani, Arun Prabhu Rameshbabu, Manivannan Jothiramajayam, Bhuvaneshwaran Subramanian, Debangana Chakravorty, Gunja Bose, Mamata Joshi, Chaitali Datta Ray, Indrani Lodh, Ratna Chattopadhyay, Sudipto Saha, Anita Mukherjee, Santanu Dhara, Baidyanath Chakravarty, Koel Chaudhury
Successful implantation is dependent on the appropriate decidualization of endometrial stromal cells for the establishment of pregnancy in women. Mycobacterial heat shock protein 65 (HSP65) is involved in pathogenesis of the genital tuberculosis (GTB), one of the common causes of infertility in emerging countries. Though implantation failure appears to be the major cause, understanding the status of decidualizaiton process in women diagnosed with GTB has not been thoroughly addressed. We, therefore, explored the effect of HSP65 protein on the endometrial cell metabolism during in vitro decidualization...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28637883/niche-mediated-depletion-of-the-normal-hematopoietic-stem-cell-reservoir-by-flt3-itd-induced-myeloproliferation
#19
Adam J Mead, Wen Hao Neo, Nikolaos Barkas, Sahoko Matsuoka, Alice Giustacchini, Raffaella Facchini, Supat Thongjuea, Lauren Jamieson, Christopher A G Booth, Nicholas Fordham, Cristina Di Genua, Deborah Atkinson, Onima Chowdhury, Emmanouela Repapi, Nicki Gray, Shabnam Kharazi, Sally-Ann Clark, Tiphaine Bouriez, Petter Woll, Toshio Suda, Claus Nerlov, Sten Eirik W Jacobsen
Although previous studies suggested that the expression of FMS-like tyrosine kinase 3 (Flt3) initiates downstream of mouse hematopoietic stem cells (HSCs), FLT3 internal tandem duplications (FLT3 ITDs) have recently been suggested to intrinsically suppress HSCs. Herein, single-cell interrogation found Flt3 mRNA expression to be absent in the large majority of phenotypic HSCs, with a strong negative correlation between Flt3 and HSC-associated gene expression. Flt3-ITD knock-in mice showed reduced numbers of phenotypic HSCs, with an even more severe loss of long-term repopulating HSCs, likely reflecting the presence of non-HSCs within the phenotypic HSC compartment...
June 21, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28637665/hmga2-promotes-the-development-of-myelofibrosis-in-jak2v617f-knock-in-mice-by-enhancing-tgf-%C3%AE-1-and-cxcl12-pathways
#20
Avik Dutta, Robert E Hutchison, Golam Mohi
Myelofibrosis (MF) is a devastating blood disorder. The JAK2V617F mutation has been detected in ~50% cases of MF. Elevated expression of high mobility group AT hook 2 (HMGA2) also has been frequently observed in patients with MF. Interestingly, upregulation of HMGA2 expression has been found in association with the JAK2V617F mutation in significant cases of MF. However, the contribution of HMGA2 in the pathogenesis of MF remains elusive. To determine the effects of concurrent expression of HMGA2 and JAK2V617F mutation in hematopoiesis, we transduced bone marrow cells from Jak2V617F knock-in mice with lentivirus expressing Hmga2 and performed bone marrow transplantation...
June 21, 2017: Blood
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