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Scientists reported Wednesday that they had taken a significant step toward altering the fundamental alphabet of life - creating an organism with an expanded artificial genetic code in its DNA. The accomplishment might eventually lead to organisms that can make medicines or industrial products that cells with only the natural genetic code cannot. The scientists behind the work at the Scripps Research Institute have already formed a company to try to use the technique to develop new antibiotics, vaccines and other products, though a lot more work needs to be done before this is practical. The work also gives some support to the concept that life can exist elsewhere in the universe using genetics different from those on Earth. "This is the first time that you have had a living cell manage an alien genetic alphabet," said Steven A. Benner, a researcher in the field at the Foundation for Applied Molecular Evolution in Gainesville, Fla., who was not involved in the new work. But the research, published online by the journal Nature, is bound to raise safety concerns and questions about whether humans are playing God. The new paper could intensify calls for greater regulation of the budding field known as synthetic biology, which involves the creation of biological systems intended for specific purposes.

An international team of scientists has made a major step forward in our understanding of how enzymes 'edit' genes, paving the way for correcting genetic diseases in patients. Researchers at the Universities of Bristol, Münster and the Lithuanian Institute of Biotechnology have observed the process by which a class of enzymes called CRISPR - pronounced 'crisper' - bind and alter the structure of DNA. The results, published in the Proceedings of the National Academy of Sciences (PNAS) today, provide a vital piece of the puzzle if these genome editing tools are ultimately going to be used to correct genetic diseases in humans. CRISPR enzymes were first discovered in bacteria in the 1980s as an immune defence used by bacteria against invading viruses. Scientists have more recenty shown that one type of CRISPR enzyme - Cas9 - can be used to edit the human genome - the complete set of genetic information for humans. Did you know?? Blood Test Has Potential to Predict Alzheimer's

Molecular biologist Nancy Hopkins, the Amgen, Inc., Professor of Biology at the Massachusetts Institute of Technology, recalled personal trials as a female scientist and challenged graduates to overcome invisible barriers in an inspiring Baccalaureate Address to the Class of 2014 at Marsh Chapel Sunday morning. She mentioned some of the great breakthroughs of the last 50 years: the internet, the Higgs particle, and notably, the "discovery of unconscious biases and the extent to which stereotypes about gender, race, sexual orientation, socioeconomic status, and age deprive people of equal opportunity in the workplace and equal justice in society." Hopkins was later awarded an honorary Doctor of Science at BU's 141st Commencement. She spoke before a packed audience at Marsh Chapel and was enthusiastically applauded for her remarks. President Robert A. Brown, University Provost Jean Morrison, Marsh Chapel Dean Robert Hill, and Emma Rehard (CAS'14) also addressed the graduates and their families. Scott Allen Jarrett (CFA'99,'08), director of music at Marsh Chapel, led the Marsh Chapel Choir in "Clarissima" and "For the Beauty of the Earth." Early in her career, Hopkins worked in the lab of James Watson, the codiscoverer of the structure of DNA. She earned a PhD at Harvard and became a faculty member at MIT, working at the Center for Cancer Research. There, she focused her research on RNA tumor viruses, then considered to be a likely cause for many cancers in humans. Hopkins also studied developmental genetics in zebra fish, and helped to design the first successful method for making insertional mutagenesis work in a vertebrate model.