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tag embryogenesis genetics genomics

Eat Yourself to Live: Autophagy’s Role in Health and Disease
Vikramjit Lahiri and Daniel J. Klionsky | Mar 1, 2018 | 10+ min read
New details of the molecular process by which our cells consume themselves point to therapeutic potential.
A rendering of a human brain in blue on a dark background with blue and white lines surrounding the brain to represent the construction of new connections in the brain.
Defying Dogma: Decentralized Translation in Neurons
Danielle Gerhard, PhD | Sep 8, 2023 | 10+ min read
To understand how memories are formed and maintained, neuroscientists travel far beyond the cell body in search of answers.
Notable
Jeffrey Perkel | May 12, 2002 | 3 min read
J.O. Korbel et al., "SHOT: A Web server for the construction of genome phylogenies," Trends in Genetics, 18[3]:158-62, March 1, 2002. "This paper reports the results of phylogenetic analysis using whole genome comparisons and introduces a new Web server (named "SHOT") for further analysis by gene-content and gene-order methods. Among the results, the gene-content method showed Homo sapiens to be more closely related to Drosophila melanogaster than Caenorhabditis elegans, and both methods showed
Human Genes: How Many?
Tom Hollon | Oct 14, 2001 | 6 min read
Counting human genes ought to be straightforward. Tracking telltale signs--motifs for promoters, translation start sites, splice sites, CpG islands--gene counters must by now be mopping up, finalizing chromosomal locations of every human gene already known, and predicting whereabouts of all the rest. Insert one human genome sequence, turn the bioinformatics crank, and genes gush out like a slot machine jackpot, right? "No, no, no," says Bo Yuan, of Ohio State University, having a laugh over th
Surpassing the Law of Averages
Jeffrey M. Perkel | Sep 1, 2009 | 7 min read
By Jeffrey M. Perkel Surpassing the Law of Averages How to expose the behaviors of genes, RNA, proteins, and metabolites in single cells. By necessity or convenience, almost everything we know about biochemistry and molecular biology derives from bulk behavior: From gene regulation to Michaelis-Menten kinetics, we understand biology in terms of what the “average” cell in a population does. But, as Jonathan Weissman of the University of Califo
A Paradigm Shift in Stem Cell Research?
Ricki Lewis | Mar 5, 2000 | 9 min read
Photo: E.D. Laywell, UT MemphisMultipotent clones of cells derived from the adult human brain With the promises and challenges of stem cell research in the headlines, visions of artificial livers dance in the public's eye. Bioethicists, politicians, and citizens alike continue to debate whether public funds should be used to obtain cells from human embryos and fetuses. On the scientific front, however, the implications of stem cell research are even more profound than offering replacement parts.
A New View of Translational Control
Charles Choi(cchoi@the-scientist.com) | Dec 4, 2005 | 7 min read
The bank note that Dominique Weil used to buy ice cream for her family at the beach this past summer may have traveled a long way.
Site-Specific Recombinases
Gail Dutton | Jul 21, 2002 | 9 min read
Image: Courtesy of Invitrogen AIDING RESEARCH INSIDE AND OUT: Recombinases allow scientists to easily move DNA between vectors in vitro (as shown above, using Invitrogen's Gateway technology). In vivo, they enable researchers to knockout genes in specific tissues, and at specific developmental times, facilitating the study of otherwise "embryonic lethal" genes. Transgenic mice. Drought-tolerant canola. Medication-producing plants. And the still-unrealized potential of gene therapy. These
A Look at Drosophila Pattern Formation
Jeffrey Perkel | Sep 2, 2001 | 9 min read
Researchers interested in gene expression studies adopt one of two approaches. They can either examine the expression of a given gene in a population of cells in aggregate, or they can study the gene on a cell-by-cell basis in situ. The advantage of the former approach is its simplicity: It is generally easy to prepare RNA or protein from a given tissue sample and to probe it for the gene or protein of interest. But there are several disadvantages associated with the population approach. First o

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