Embryo, Mammalian

Publication Title: 
The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences

Previous studies indicated that renal tubular epithelial cells from some long-lived avian species exhibit robust and/or unique protective mechanisms against oxidative stress relative to murine cells.

Author(s): 
Ogburn, C. E.
Carlberg, K.
Ottinger, M. A.
Holmes, D. J.
Martin, G. M.
Austad, S. N.
Publication Title: 
Molecular Cell

Cellular processes function through multistep pathways that are reliant on the controlled association and disassociation of sequential protein complexes. While dynamic action is critical to propagate and terminate work, the mechanisms used to disassemble biological structures are not fully understood. Here we show that the p23 molecular chaperone initiates disassembly of protein-DNA complexes and that the GCN5 acetyltransferase prolongs the dissociated state through lysine acetylation.

Author(s): 
Zelin, Elena
Zhang, Yang
Toogun, Oyetunji A.
Zhong, Sheng
Freeman, Brian C.
Publication Title: 
The Washington Post
Author(s): 
Blackburn, Elizabeth H.
Publication Title: 
Science (New York, N.Y.)
Author(s): 
Rowley, Janet D.
Blackburn, Elizabeth
Gazzaniga, Michael S.
Foster, Daniel W.
Publication Title: 
The New England Journal of Medicine
Author(s): 
Blackburn, Elizabeth
Publication Title: 
Schizophrenia Research

INTRODUCTION: To improve the understanding of psychotic abnormalities and their non-Mendelian inheritance patterns, the epigenetic regulation of the psychotic disorder-associated GABRB2, gene for the type A ?-aminobutyric acid receptor ?(2)-subunit, was investigated. METHODS: Expression of GABRB2, and the epigenetic regulatory enzymes histone deacetylases (HDACs) and DNA methyltransferases (DNMTs) in mouse and postmortem human brains was analyzed using real-time PCR.

Author(s): 
Zhao, Cunyou
Wang, Feng
Pun, Frank W.
Mei, Lingling
Ren, Lihuan
Yu, Zhiliang
Ng, Siu-Kin
Chen, Jianhuan
Tsang, Shui-Ying
Xue, Hong
Publication Title: 
Neuron

One of the exceptional properties of the brain is its ability to acquire new knowledge through learning and to store that information through memory. The epigenetic mechanisms linking changes in neuronal transcriptional programs to behavioral plasticity remain largely unknown. Here, we identify the epigenetic signature of the neuronal enhancers required for transcriptional regulation of synaptic plasticity genes during memory formation, linking this to Reelin signaling.

Author(s): 
Telese, Francesca
Ma, Qi
Perez, Patricia Montilla
Notani, Dimple
Oh, Soohwan
Li, Wenbo
Comoletti, Davide
Ohgi, Kenneth A.
Taylor, Havilah
Rosenfeld, Michael G.
Publication Title: 
Health Progress (Saint Louis, Mo.)

In November 1998 biologists announced that they had discovered a way to isolate and preserve human stem cells. Since stem cells are capable of developing into any kind of human tissue or organ, this was a great scientific coup. Researchers envision using the cells to replace damaged organs and to restore tissue destroyed by, for example, Parkinson's disease, diabetes, or even Alzheimer's. But, since stem cells are taken from aborted embryonic and fetal tissue or "leftover" in vitro embryos, their use raises large ethical issues.

Author(s): 
Branick, V.
Lysaught, M. T.
Publication Title: 
University of Toledo Law Review. University of Toledo. College of Law

This essay reviews how cloning techniques may be used for therapeutic purposes, analyzes ethical implications, and makes recommendations for public policy discourse. Although cloning may bring many potential benefits, they remain uncertain. Furthermore, human embryo research is morally problematic. Therefore, alternatives to human cloning for therapeutic aims should be sought at present. In addition to central ethical issues, public discourse should maintain an emphasis on the value of the human embryo over scientific expediency, the relativity of health, and the principle of justice.

Author(s): 
Hanson, M. J.
Publication Title: 
Theological Studies

The author presents an overview (completed on September 15, 2001) of three issues involved in the ethics of human embryonic stem cell therapy: the ethical implications of some of the scientific issues involved, the specific ethical issues of the moral standing of the early human embryo and the problem of cooperation, and a consideration of two public policy issues: should the research go forward, and what kind of health care system should the United States adopt. The author argues that the public policy questions are the most important agenda.

Author(s): 
Shannon, T. A.

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