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Organogenesis

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https://www.readbyqxmd.com/read/29902110/celastrol-enhances-atoh1-expression-in-inner-ear-stem-cells-and-promotes-their-differentiation-into-functional-auditory-neuronal-like-cells
#1
Zhao Han, Yu-Yan Gu, Ning Cong, Rui Ma, Fang-Lu Chi
We aimed to investigate the beneficial effect of Celastrol on inner ear stem cells and potential therapeutic value for hearing loss. The inner ear stem cells were isolated and characterized from utricular sensory epithelium of adult mice. The stemness was evaluated by sphere formation assay. The relative expressions of Atoh1, MAP-2 and Myosin VI were measured by RT-PCR and immunoblotting. The up-regulation of MAP-2 was also analysed with immunofluorescence. The in vitro neuronal excitability was interrogated by calcium oscillation...
June 14, 2018: Organogenesis
https://www.readbyqxmd.com/read/29889592/sodium-hydroxide-based-non-detergent-decellularizing-solution-for-rat-lung
#2
Hideyori Sengyoku, Tomoshi Tsuchiya, Tomohiro Obata, Ryoichiro Doi, Yasumasa Hashimoto, Mitsutoshi Ishii, Hiromi Sakai, Naoto Matsuo, Daisuke Taniguchi, Takashi Suematsu, Murray Lawn, Keitaro Matsumoto, Takuro Miyazaki, Takeshi Nagayasu
Lung transplantation is the last option for the treatment of end stage chronic lung disorders. Because the shortage of donor lung organs represents the main hurdle, lung regeneration has been considered to overcome this hurdle. Recellularization of decellularized organ scaffold is a promising option for organ regeneration. Although detergents are ordinarily used for decellularization, other approaches are possible. Here we used high alkaline (pH12) sodium hydroxide (NaOH)-PBS solution without detergents for lung decellularization and compared the efficacy on DNA elimination and ECM preservation with detergent based decellularization solutions CHAPS and SDS...
June 11, 2018: Organogenesis
https://www.readbyqxmd.com/read/29883244/a-microfluidic-competitive-immuno-aggregation-assay-for-high-sensitivity-cell-secretome-detection
#3
Fan Liu, Pawan Kc, Liwei Ni, Ge Zhang, Jiang Zhe
We report a high-sensitivity cell secretome detection method using competitive immuno-aggregation and a micro-Coulter counter. A target cell secretome protein competes with anti-biotin-coated microparticles (MPs) to bind with a biotinylated antibody (Ab), causing decreased aggregation of the functionalized MPs and formation of a mixture of MPs and aggregates. In comparison, without the target cell secretome protein, more microparticles are functionalized, and more aggregates are formed. Thus, a decrease in the average volume of functionalized microparticles/aggregates indicates an increase in cell secretome concentration...
June 8, 2018: Organogenesis
https://www.readbyqxmd.com/read/29461900/suppression-of-lrrc19-promotes-cutaneous-wound-healing-in-pressure-ulcers-in-mice
#4
Jie Sun, Zhijing Wang, Xirui Wang
The ischemia-reperfusion (I/R) induced skin lesion has been identified as primary cause of pressure ulcer. Better understanding of the mechanism is required for new therapy development. Leucine rich repeat containing protein 19 (LRRC19) is a recently discovered transmembrane protein containing leucine-rich repeats and plays a role in immune response. To investigate the role of LRRC19 in pressure ulcers, mouse ulcer model was established with two cycles of I/R. The expression of LRRC19 was assessed during injury...
February 20, 2018: Organogenesis
https://www.readbyqxmd.com/read/29420128/effe0cts-of-porcine-acellular-dermal-matrix-treatment-on-wound-healing-and-scar-formation-role-of-jag1-expression-in-epidermal-stem-cells
#5
Xiao-Dong Chen, Shu-Bin Ruan, Ze-Peng Lin, Ziheng Zhou, Feng-Gang Zhang, Rong-Hua Yang, Ju-Lin Xie
Skin wound healing involves Notch/Jagged1 signaling. However, little is known how Jag1 expression level in epidermal stem cells (ESCs) contributes to wound healing and scar formation. We applied multiple cellular and molecular techniques to examine how Jag1 expression in ESCs modulates ESCs differentiation to myofibroblasts (MFB) in vitro, interpret how Jag1 expression in ESCs is involved in wound healing and scar formation in mice, and evaluate the effects of porcine acellular dermal matrix (ADM) treatment on wound healing and scar formation...
February 8, 2018: Organogenesis
https://www.readbyqxmd.com/read/29420124/embryonic-skin-development-and-repair
#6
Michael S Hu, Mimi R Borrelli, Wan Xing Hong, Samir Malhotra, Alexander T M Cheung, Ryan C Ransom, Robert C Rennert, Shane D Morrison, H Peter Lorenz, Michael T Longaker
Fetal cutaneous wounds have the unique ability to completely regenerate wounded skin and heal without scarring. However, adult cutaneous wounds heal via a fibroproliferative response which results in the formation of a scar. Understanding the mechanism(s) of scarless wound healing leads to enormous clinical potential in facilitating an environment conducive to scarless healing in adult cutaneous wounds. This article reviews the embryonic development of the skin and outlines the structural and functional differences in adult and fetal wound healing phenotypes...
February 8, 2018: Organogenesis
https://www.readbyqxmd.com/read/29359998/prolongation-of-liver-specific-function-for-primary-hepatocytes-maintenance-in-3d-printed-architectures
#7
Yohan Kim, Kyojin Kang, Sangtae Yoon, Ji Sook Kim, Su A Park, Wan Doo Kim, Seung Bum Lee, Ki-Young Ryu, Jaemin Jeong, Dongho Choi
Isolated primary hepatocytes from the liver are very similar to in vivo native liver hepatocytes, but they have the disadvantage of a limited lifespan in 2D culture. Although a sandwich culture and 3D organoids with mesenchymal stem cells (MSCs) as an attractive assistant cell source to extend lifespan can be used, it cannot fully reproduce the in vivo architecture. Moreover, long-term 3D culture leads to cell death because of hypoxic stress. Therefore, to overcome the drawback of 2D and 3D organoids, we try to use a 3D printing technique using alginate hydrogels with primary hepatocytes and MSCs...
January 23, 2018: Organogenesis
https://www.readbyqxmd.com/read/29913119/effect-of-tak1-on-osteogenic-differentiation-of-mesenchymal-stem-cells-by-regulating-bmp-2-via-wnt-%C3%AE-catenin-and-mapk-pathway
#8
Hongpeng Yang, Yue Guo, Dawei Wang, Xiaofei Yang, Chengzhi Ha
Mesenchymal stem cells (MSCs) have the ability to differentiate into osteoblasts and chondrocytes. In vitro osteogenic differentiation is critical but the molecular mechanism has yet to be further clarified. The role of TGF-β activated kinase 1 (TAK1) in MSCs osteogenesis differentiation has not been reported. By adding si-TAK1 and rhTAK1, the osteogenic differentiation of MSCs was measured. Expression levels of the osteoblastic marker genes during osteogenic differentiation of MSCs were checked. As well as molecules involved in BMP and Wnt/β-catenin signaling pathways...
January 2, 2018: Organogenesis
https://www.readbyqxmd.com/read/29293384/corrigendum
#9
(no author information available yet)
No abstract text is available yet for this article.
January 2, 2018: Organogenesis
https://www.readbyqxmd.com/read/29173023/the-epidemiology-of-supernumerary-teeth-and-the-associated-molecular-mechanism
#10
Xi Lu, Fang Yu, Junjun Liu, Wenping Cai, Yumei Zhao, Shouliang Zhao, Shangfeng Liu
No abstract text is available yet for this article.
November 27, 2017: Organogenesis
https://www.readbyqxmd.com/read/29027839/ephb-receptors-mainly-ephb3-contribute-to-the-proper-development-of-cortical-thymic-epithelial-cells
#11
Sara Montero-Herradón, Javier García-Ceca, Agustín G Zapata
EphB and their ligands ephrin-B are an important family of protein tyrosine kinase receptors involved in thymocyte-thymic epithelial cell interactions known to be key for the maturation of both thymic cell components. In the present study, we have analyzed the maturation of cortical thymic epithelium in EphB-deficient thymuses evaluating the relative relevance of EphB2 and EphB3 in the process. Results support a relationship between the epithelial hypocellularity of mutant thymuses and altered development of thymocytes, lower proportions of cycling thymic epithelial cells and increased epithelial cell apoptosis...
October 2, 2017: Organogenesis
https://www.readbyqxmd.com/read/29020571/factors-and-molecules-that-could-impact-cell-differentiation-in-the-embryo-generated-by-nuclear-transfer
#12
Renata Simões, Arnaldo Rodrigues Santos
Somatic cell nuclear transfer is a technique to create an embryo using an enucleated oocyte and a donor nucleus. Nucleus of somatic cells must be reprogrammed in order to participate in normal development within an enucleated egg. Reprogramming refers to the erasing and remodeling of cellular epigenetic marks to a lower differentiation state. Somatic nuclei must be reprogrammed by factors in the oocyte cytoplasm to a rather totipotent state since the reconstructed embryo must initiate embryo development from the one cell stage to term...
October 2, 2017: Organogenesis
https://www.readbyqxmd.com/read/28934068/upper-limb-hemimelia-in-a-twin-pregnancy-which-was-obtained-by-an-icsi-and-pgd-in-a-woman-with-mosaic-turner-s-syndrome-and-the-prognosis
#13
Ahter Tanay Tayyar, Ahmet Tayyar, Ahmet Eser, Çetin Kılıçcı, İlter Yenidede, Selçuk Selçuk
Turner's syndrome (TS) is depicted as a total or partial absence of X chromosome, and occurs in approximately 1/2200 of live born females. Generally, mosaic patients are diagnosed following karyotype analysis due to recurrent pregnancy loss, repeated in vitro fertilization (IVF) failure, and a history of malformed babies. The purpose of this case report is to show that even a selection of normal karyotype embryos can result in abnormalities for those with mosaic TS. A 32-year old patient who underwent IVF after ICSI-PGD, and was diagnosed with 45X/46XX karyotype...
October 2, 2017: Organogenesis
https://www.readbyqxmd.com/read/28933666/regulation-of-proliferation-in-developing-human-tooth-germs-by-msx-homeodomain-proteins-and-cyclin-dependent-kinase-inhibitor-p19ink4d
#14
Darko Kero, Katarina Vukojevic, Petra Stazic, Danijela Sundov, Snjezana Mardesic Brakus, Mirna Saraga-Babic
Before the secretion of hard dental tissues, tooth germs undergo several distinctive stages of development (dental lamina, bud, cap and bell). Every stage is characterized by specific proliferation patterns, which is regulated by various morphogens, growth factors and homeodomain proteins. The role of MSX homeodomain proteins in odontogenesis is rather complex. Expression domains of genes encoding for murine Msx1/2 during development are observed in tissues containing highly proliferative progenitor cells. Arrest of tooth development in Msx knockout mice can be attributed to impaired proliferation of progenitor cells...
October 2, 2017: Organogenesis
https://www.readbyqxmd.com/read/28933645/rar%C3%AE-and-rar%C3%AE-reciprocally-control-k5-progenitor-cell-expansion-in-developing-salivary-glands
#15
Kara A DeSantis, Adam R Stabell, Danielle C Spitzer, Kevin J O'Keefe, Deirdre A Nelson, Melinda Larsen
Understanding the mechanisms of controlled expansion and differentiation of basal progenitor cell populations during organogenesis is essential for developing targeted regenerative therapies. Since the cytokeratin 5-positive (K5+ ) basal epithelial cell population in the salivary gland is regulated by retinoic acid signaling, we interrogated how isoform-specific retinoic acid receptor (RAR) signaling impacts the K5+ cell population during salivary gland organogenesis to identify RAR isoform-specific mechanisms that could be exploited in future regenerative therapies...
October 2, 2017: Organogenesis
https://www.readbyqxmd.com/read/28933641/the-effect-of-a-silk-fibroin-polyurethane-blend-patch-on-rat-vessels
#16
Kazumi Shimada, Akira Higuchi, Ryota Kubo, Tomoaki Murakami, Yasumoto Nakazawa, Ryou Tanaka
Patch grafts are widely used in various kind of vascular surgeries such as detect repair or dilation of vascular stenosis. Expanded polytetrafluoroethylene (ePTFE) patches are flexible and handle well, but have shown problems with calcification as they are non-bioabsorbable and therefore permanently remain in the body. It is important to develop an alternative biocompatible patch. Silk fibroin (SF) was developed as a biocompatible material, but it lacks of the elasticity required for surgery as a patch. Polyurethane (PU) is also a well-known elastomer so this study focused on the SF and the PU blend materials with a weight ratio of 5:5 (SF/PU)...
October 2, 2017: Organogenesis
https://www.readbyqxmd.com/read/28933636/nicotinic-acid-inhibits-angiogenesis-likely-through-cytoskeleton-remodeling
#17
Lemen Pan, Guanfeng Yu, Xiangjian Chen, Xiaoqiang Li
Angiogenesis is a physiological procedure during which the new blood vessels develop from the pre-existing vessels. Uncontrolled angiogenesis is related to various diseases including cancers. Clinical inhibition of undesired angiogenesis is still under investigation. We utilized nicotinic acid, a family member of the B-vitamin niacin (vitamin B3) that has been used in the prevention and treatment of atherosclerosis or other lipid-metabolic disorders, to treat human umbilical vein endothelial cells (HUVECs) and chick chorioallantoic membrane (CAM), and investigated its influence on angiogenesis in vitro and in vivo...
October 2, 2017: Organogenesis
https://www.readbyqxmd.com/read/29064338/corrigendum
#18
(no author information available yet)
No abstract text is available yet for this article.
July 3, 2017: Organogenesis
https://www.readbyqxmd.com/read/28598297/the-neuronal-differentiation-microenvironment-is-essential-for-spinal-cord-injury-repair
#19
REVIEW
Yannan Zhao, Zhifeng Xiao, Bing Chen, Jianwu Dai
Spinal cord injury (SCI) often leads to substantial disability due to loss of motor function and sensation below the lesion. Neural stem cells (NSCs) are a promising strategy for SCI repair. However, NSCs rarely differentiate into neurons; they mostly differentiate into astrocytes because of the adverse microenvironment present after SCI. We have shown that myelin-associated inhibitors (MAIs) inhibited neuronal differentiation of NSCs. Given that MAIs activate epidermal growth factor receptor (EGFR) signaling, we used a collagen scaffold-tethered anti-EGFR antibody to attenuate the inhibitory effects of MAIs and create a neuronal differentiation microenvironment for SCI repair...
July 3, 2017: Organogenesis
https://www.readbyqxmd.com/read/28598258/the-epidemiology-of-supernumerary-teeth-and-the-associated-molecular-mechanism
#20
REVIEW
Xi Lu, Fang Yu, Junjun Liu, Wenping Cai, Yumei Zhao, Shouliang Zhao, Shangfeng Liu
Supernumerary teeth are common clinical dental anomalies. Although various studies have provided abundant information regarding genes and signaling pathways involved in tooth morphogenesis, which include Wnt, FGF, BMP, and Shh, the molecular mechanism of tooth formation, especially for supernumerary teeth, is still unclear. In the population, some cases of supernumerary teeth are sporadic, while others are syndrome-related with familial hereditary. The prompt and accurate diagnosis of syndrome related supernumerary teeth is quite important for some distinctive disorders...
July 3, 2017: Organogenesis
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