نتایج جستجو برای: ips

تعداد نتایج: 8277  

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2011
Gabsang Lee Lorenz Studer

Induced pluripotent stem (iPS) cells have considerable promise as a novel tool for modelling human disease and for drug discovery. While the generation of disease-specific iPS cells has become routine, realizing the potential of iPS cells in disease modelling poses challenges at multiple fronts. Such challenges include selecting a suitable disease target, directing the fate of iPS cells into sy...

2016
Yuko Iwasaki Sunao Sugita Michiko Mandai Shigenobu Yonemura Akishi Onishi Shin-ichiro Ito Manabu Mochizuki Kyoko Ohno-Matsui Masayo Takahashi

PURPOSE To establish a novel protocol for differentiation of retinal pigment epithelium (RPE) with high purity from mouse induced pluripotent stem cells (iPSC). METHODS Retinal progenitor cells were differentiated from mouse iPSC, and RPE differentiation was then enhanced by activation of the Wnt signaling pathway, inhibition of the fibroblast growth factor signaling pathway, and inhibition o...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Osahiko Tsuji Kyoko Miura Yohei Okada Kanehiro Fujiyoshi Masahiko Mukaino Narihito Nagoshi Kazuya Kitamura Gentaro Kumagai Makoto Nishino Shuta Tomisato Hisanobu Higashi Toshihiro Nagai Hiroyuki Katoh Kazuhisa Kohda Yumi Matsuzaki Michisuke Yuzaki Eiji Ikeda Yoshiaki Toyama Masaya Nakamura Shinya Yamanaka Hideyuki Okano

Various types of induced pluripotent stem (iPS) cells have been established by different methods, and each type exhibits different biological properties. Before iPS cell-based clinical applications can be initiated, detailed evaluations of the cells, including their differentiation potentials and tumorigenic activities in different contexts, should be investigated to establish their safety and ...

2017
Kazuo Takayama Naoki Akita Natsumi Mimura Rina Akahira Yukimasa Taniguchi Makoto Ikeda Fuminori Sakurai Osamu Ohara Tomohiro Morio Kiyotoshi Sekiguchi Hiroyuki Mizuguchi

Hepatocyte-like cells (HLCs) differentiated from human induced pluripotent stem (iPS) cells are expected to be applied for regenerative medicine. In this study, we attempted to generate safe and therapeutically effective human iPS-HLCs for hepatocyte transplantation. First, human iPS-HLCs were generated from a human leukocyte antigen-homozygous donor on the assumption that the allogenic transpl...

2017
Daniele Focosi Giovanni Amabile

Red blood cells and platelets are anucleate blood components indispensable for oxygen delivery and hemostasis, respectively. Derivation of these blood elements from induced pluripotent stem (iPS) cells has the potential to develop blood donor-independent and genetic manipulation-prone products to complement or replace current transfusion banking, also minimizing the risk of alloimmunization. Wh...

Journal: :IBM Systems Journal 1980
Alan G. Konheim Marian H. Mack Robert K. McNeill Bryant Tuckerman Gerald Waldbaum

portance as computers have become faster and as strong cryptographic algorithms, such as the Data Encryption Standard (DES) , have become available. But a standard encipherment technique is only the j r s t step in applying cryptography in a computing center. This paper discusses the Information Protection System (IPS), a set of cryptographic application programs designed to use the DES algori...

2014
Tetsuya Ishii Michael J. Edel

Recently, fertile spermatozoa and oocytes were generated from mouse induced pluripotent (iPS) cells using a combined in vitro and in vivo induction system. With regard to germ cell induction from human iPS cells, progress has been made particularly in the male germline, demonstrating in vitro generation of haploid, round spermatids. Although iPS-derived germ cells are expected to be developed t...

2017
Yanhui Zhao Xinfeng Fei Jianming Guo Gang Zou Weidong Pan Jingju Zhang Yongyi Huang Te Liu Weiwei Cheng

The present study has reported a novel method for producing induced pluripotent stem (iPS) cells. Primary human amniotic epithelial cells (HuAECs) were isolated from the amniotic membranes of pregnant women who received Cesarean sections. These cells were infected with retroviruses carrying octamer-binding transcription factor 4 (Oct4), (sex determining region Y)-box 2 (Sox2) and Yes-associated...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Shohei Wakao Masaaki Kitada Yasumasa Kuroda Taeko Shigemoto Dai Matsuse Hideo Akashi Yukihiro Tanimura Kenichiro Tsuchiyama Tomohiko Kikuchi Makoto Goda Tatsutoshi Nakahata Yoshinori Fujiyoshi Mari Dezawa

The stochastic and elite models have been proposed for the mechanism of induced pluripotent stem (iPS) cell generation. In this study we report a system that supports the elite model. We previously identified multilineage-differentiating stress-enduring (Muse) cells in human dermal fibroblasts that are characterized by stress tolerance, expression of pluripotency markers, self-renewal, and the ...

Journal: :Stem cells 2010
Cesar A Sommer Andreia Gianotti Sommer Tyler A Longmire Constantina Christodoulou Dolly D Thomas Monica Gostissa Fred W Alt George J Murphy Darrell N Kotton Gustavo Mostoslavsky

The residual presence of integrated transgenes following the derivation of induced pluripotent stem (iPS) cells is highly undesirable. Here we demonstrate efficient derivation of iPS cells free of exogenous reprogramming transgenes using an excisable polycistronic lentiviral vector. A novel version of this vector containing a reporter fluorochrome allows direct visualization of vector excision ...

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