Human parthogenesis

Stem cell researchers now believe that the human ES cell line SCNT-hES-1 (you may renember Hwang who claimed having first cloned a human by somatic cell nuclear transfer) is derived by parthogenesis – the result of a dividing human oocyte.
They test the origin of the Hwang cells by genome-wide SNP analysis as the initial DNA fingerprint was doubtful Continue reading Human parthogenesis

 

CC-BY-NC Science Surf accessed 29.11.2025

Allergy transplantation

A new paper in Transplantation takes up an old question – can you passively transfer asthma or allergy? It seems so – the current study reports in 5 of 42 patients elevated IgE plus allergy symptoms. This is in line with earlier reports. Sorry to say — you can get allergy also by bone marrow transplantation.

 

Addendum 10/6/08
Blood

A total of 16 nonallergic recipients with allergic donors were reported to develop allergic disease posttransplant, however, conclusive information was available for only 5 cases. Allergic disease was reported to abate in 3 allergic recipients with nonallergic donors, however, conclusive information was available for only 2 cases. Problems in interpreting the reports include incomplete data on allergic disease in the donor or recipient pretransplant, not knowing the denominator, and the lack of controls. In summary, review of the literature generates the hypothesis that allergic disease is transferable

 

Addendum 14/7/22
Ann All Asthma Immunol

 

CC-BY-NC Science Surf accessed 29.11.2025

Any new paper? A video cast how to stay informed

Following a frequent request, here is a short video how to create your own Pubmed news feed. You simply need the Sage plugin for Firefox; then goto to Pubmed, create your personal RSS feed and import this URL into the bookmark category that Sage is looking for. Here is the show: Continue reading Any new paper? A video cast how to stay informed

 

CC-BY-NC Science Surf accessed 29.11.2025

Detecting repoxygen infection

Doping rules are sometimes hard to understand. Sleeping in a low pressure chamber and training at high altitudes is allowed but taking epo is not – although net effects may be the same.

This might be a reason why some athletes are now trying to mimick more closely biology. Repoxygen is a viral vector known for some time that includes the human epo gene under control of a hypoxia control element. Clearly this drug has the potential to be used for doping (“Outlaw DNA“). Continue reading Detecting repoxygen infection

 

CC-BY-NC Science Surf accessed 29.11.2025

RNA genes – dark matter of human biology?

I currently hunting some transcripts of unknown function (see below), possibly a RNA gene? while it is difficult to locate any good annotation server. So far I tried RNAz based on a PNAS 2005 paper – another one was RNA Genie. Next step will be the new Gingeras paper that describes even a new class of RNA genes. Finally this may not even be a RNA at all but an alternative leading exon … Continue reading RNA genes – dark matter of human biology?

 

CC-BY-NC Science Surf accessed 29.11.2025

Question of the year in genetics

Nature genetics asked about 30 eminent scientists “What would you do if it became possibe to sequence the human genome for only $1,000?”. Unfortunately, this initiative has been launched 4 weeks too early as I believe some may have responded differentially if they could have a chance to read the ENCODE papers… The majority of scientists seems to follow the idea of Continue reading Question of the year in genetics

 

CC-BY-NC Science Surf accessed 29.11.2025

spickmich & meinprof

spickmich.de (for high school) and meinprof.de (for universities) are two large German portal sites that allow a rating of teachers and university professors.
Finally, now several German courts decided that online voting is legal – I wouldn´t believe that 20 years ago but think it will improve teacher student relationship if done in a responsible way.

 

CC-BY-NC Science Surf accessed 29.11.2025

Galaxy – a must have

Manipulating large SNP datasets has always been a hassle, a lot of cut & paste, quick & dirty database resorts and no documentation after all. Only by the last week, I learned form the ENCODE papers that there is now a web service that helps with all kind of these tasks. Check out Galaxy — a “must have”.

galaxy.png

 

CC-BY-NC Science Surf accessed 29.11.2025

New DNA sequencing technologies

New DNA sequencing technologies & human genome variation, San Diego, HGVS Meeting (ASHG satellite). From the program

On the road to the € 1,000 human genome sequence, DNA sequencing technology is currently developing at an incredible speed. Although we are still far from the ultimate goal, DNA sequencing cost has already dropped close to the range of € 1,000 per 1 million nucleotides. These developments have tremendous consequences for the number of DNA variants that we will discover, both pathogenic and harmless. To get an up-to-date overview of the technologies behind this revolution, the HGVS has selected DNA sequencing technologies as this year’s special topic for its annual meeting. Speakers from the major players in the field have been invited to explain in detail the different technologies, their strong and weak points and to show some first innovative applications and results using the new sequencing power.

 

CC-BY-NC Science Surf accessed 29.11.2025