October 2000

Courtesy of PPL TherapeuticsA new generation of pigs. Headlines in late summer 2000 introduced long-awaited reports on pig cloning and retroviral transmission to mice, pig cells healing rat spinal cords, and a gaff by Dolly dad Ian Wilmut erroneously heralding halt of xenograft work at the Roslin Institute near Edinburgh, Scotland. So it seemed that the question of whether pigs can pass their retroviruses to humans might finally be on the road to resolution. Not quite. Pigs, as the purveyors o

The Scientist 14[20]:1, Oct. 16, 2000 NEWS Biotech Needs Collaborations, Joint Ventures Necessary for survival in today's world, partnering also has its perils By Arielle Emmett The biotech industry can no longer survive as a city of independent ventures. Collaborations, commercial alliances, joint ventures--a web of scientific, manufacturing, sales, and financial partnerships--is now the norm rather than the exception. Overwhelming benefits have resulted in terms of a f

Alfred Gilman Completion of a draft of the human genome and advances in gene expression manipulation imply the potential capacity to predict altered behavior from factors such as pharmacological inputs. In an age where collaborations and joint ventures are typical, a Nobel laureate in biomedicine will lead a research alliance that ultimately should promote faster disease treatment via targeted drug remedies. Alfred Gilman, chairman of pharmacology at the University of Texas Southwestern at Dalla

The Scientist 14[20]:0, Oct. 16, 2000 NEWS Two Companies: Microscopic Collaborations By Arielle Emmett Some of the more established companies seem to hedge their bets by forming complex, multiple collaborative relationships with a number of companies. Neose, for example, a Horsham, Pa.-based biotech venture specializing in complex carbohydrate development, now has five formal corporate collaborations in place, according to P. Sherrill Neff, president and CEO. "One

Ubiquitin-related research has made the transition from the basic to clinical arena in the past decade, and the field is now central to understanding diseases ranging from cancer to neurodegenerative disorders.

The language of a DNA sequence is more than meets the eye. A string of A, C, T, and G can indeed encode a string of amino acids. At a higher level, however, nuances of sequence may impart evolutionary information, because variants accumulate over time. Single nucleotide polymorphisms--SNPs--for example, are scattered throughout the human genome on average about one every 500 to 1,000 DNA bases. But they are not distributed evenly, and their clustering or paucity may hold clues to the past. A te

What can people expect from biotechnology and genomics? Ten luminaries from the biomedical arena, law, and journalism grappled with issues related to that question at the City University of New York's Graduate Center on Sept. 20. In attendance was an audience of 350 whose research, medical, and counseling careers could hinge on how such issues are resolved. Syracuse University's Gene Media Forum (www.genemedia.org) sponsored the event. The recurring theme was biological predictability. Er

A new strategic alliance has brought two countries separated by the Atlantic Ocean closer together, with Maryland becoming the first state to enter into a biotechnology agreement with Scotland. University of Maryland Biotechnology Institute's (UMBI) president Jennie Hunter-Cevera joined representatives from Maryland and Scotland's biotech communities at a recent ceremony where an agreement was signed designed to increase business and scientific collaborations. Hunter-Cevera was part of a 14-memb

Photo: Ori Fragman, Hebrew University Hordeum spontaneum, the plant studied for BARE-1 retroelements. With genome sequences arriving almost as regularly as the morning paper, the public's attention is focused on genes--new genes to protect crops against pests; rogue genes that make bacteria resistant to antibiotics; faulty genes that, if fixed, could cure diseases such as muscular dystrophy. What many people don't realize is that genes account for only part of an organism's DNA, and in many c

Brain Disease Research Advances with Gene Chips Though there is no cure for the millions of Americans with epilepsy, recent advances using gene chip technology may have found a key to treatment for those recovering from seizure trauma. Researchers led by the Salk Institute for Biological Studies in La Jolla, Calif., report on using the gene chip technology that determines whether a gene is turned on or off by measuring its ability to bind to the corresponding DNA sequences on the chips. They c

For this article, Nadia S. Halim interviewed James Ihle, Howard Hughes Medical Institute investigator and chairman of the department of biochemistry, St. Jude Children's Research Hospital, Memphis, Tenn. Data from the Web of Science (ISI, Philadelphia) show that Hot Papers are cited 50 to 100 times more often than the average paper of the same type and age. S. Teglund, C. McKay, E. Schuetz, J.M. van Deursen, D. Stravopodis, D. Wang, M. Brown, S. Bodner, G. Grosveld, and J.N. Ihle, "Stat5a and

For this article, Nadia S. Halim interviewed Charles Kurland, professor of molecular biology at Uppsala University, Uppsala, Sweden. Data from the Web of Science (ISI, Philadelphia) show that Hot Papers are cited 50 to 100 times more often than the average paper of the same type and age. S.G.E. Andersson, A. Zomorodipour, J.O. Andersson, T. Sicheritz-Ponten, U.C.M. Alsmark, R.M. Podowski, A.K. Naslund, A-S. Eriksson, H.H. Winkler, and C.G. Kurland, "The genome sequence of Rickettsia prowazekii

Zymark Corporation's automated Prelude™ Workstation reduces sample preparation time. Automated sample preparation provides numerous advantages for today's busy laboratory. Researchers currently face an increased pace of new product development, stricter quality control, and more testing requirements imposed by federal government regulations. The Prelude Personal Productivity Workstation from Zymark Corp. of Hopkinton, Mass., is designed to help researchers meet these increasingly stringen

In the rapidly widening arena of functional genomics, a few key players dominate the lab tools game. Perhaps the most prominent is the DNA microarray. This robust tool allows researchers to examine the expression of hundreds, even thousands, of genes at once. In these arrays, carefully organized patches of either complementary DNA (cDNA) clones or oligonucleotides are robotically deposited on a fixed surface. Researchers use labeled probes to locate areas of gene expression, tackling questions o

Not so long ago, researchers had somewhat limited choices for locating and following a particular piece of DNA. A probe could be labeled using radioactivity, by kinasing an end or nick-translating the whole piece. A fragment of interest could be visualized (along with all other DNA and RNA species in the preparation) using ethidium bromide. With sufficient skill and patience an investigator could obtain from these rather crude techniques fairly impressive information, such as the precise 5' end

Selected Companies Providing Used or Refurbished Lab Equipment Selected Companies Providing Used or Refurbished Lab Equipment (Continued) For scientists who are unfamiliar with the secondary market for lab equipment, the prospect of buying a used centrifuge or thermal cycler conjures up images of fast-talking salesmen and broken-down instrumentation strung together with duct tape and paper clips. Fearful of high-pressure tactics disguised in polyester and snake skin boots, many scientists in