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Tuesday, August 28, 2012

PhD in Molecular Medicine / Computational Biology In Italy

PhD in Molecular Medicine / Computational Biology

  • DURATION: 4 years
  • AWARDING BODIES: University of Milan
  • LOCATION: Campus IFOM-IEO Milan
  • COORDINATOR OF THE PROGRAM: Pier Giuseppe Pelicci
  • SCIENTIFIC COORDINATORS: F. CiccarelliA. Ciliberto
  • DESCRIPTION:
    This course is intended to students having a specific interest for quantitative aspects of biology, such as genomics, systems biology, and modeling of molecular networks.
  • RESEARCH TOPICS:
    Systems Biology, Analysis of Next-Gen Sequencing Data, Network Biology, Evolutionary Genomics, Bioinformatics, Cancer Genomics
  • SUPERVISION: 
    Each PhD student will be tutored by three advisors:
    The Supervisor is the scientific head of the host laboratory, who will guide the work of the student during his/her PhD period.
    The Co-supervisor will contribute in tutoring the student with particular emphasis to the technical and quantitative aspects of the project.
    The External Co-supervisor is a foreign expert, who will provide advice at critical stages of the project and meet the student at least once during his/her PhD period.
  • TRAINING OFFERED:
    Courses: Courses cover the first three years and address basic and advanced topics in cancer biology from a computational perspective.
    Seminars: Students are exposed to a wide selection of seminars from international speakers.
  • FELLOWSHIP:
    Tuition and salaries for students are fully covered for the entire PhD period. Refer to "financial matters" for more info.
  • WORKING LANGUAGE: English
  • HOW TO APPLY:
    Applications are accepted exclusively online once a year in the period July-September. Go to application process.
  • STARTING DATE:: November 1st of each year

Thursday, August 2, 2012

Biochemistry - Donald Voet, Judith G. Voet - 4th Edition



Biochemistry is a field of enormous fascination and utility, arising, no doubt, from our own self-interest. Human welfare, particularly its medical and nutritional aspects, has been vastly improved by our rapidly growing understanding of biochemistry. Indeed, scarcely a day passes without the report of a biomedical discovery that benefits a significant portion of humanity. Further advances in this rapidly expanding field of knowledge will no doubt lead to even more spectacular gains in our ability to understand nature and to control our destinies. It is therefore essential that individuals embarking on a career in biomedical sciences be well versed in biochemistry.

Friday, July 13, 2012

7 Tips for Optimal DNA Transfection

    DNA transfection is a main tool for current genetics as well as cell and molecular biology studies. Understanding the underlying mechanisms and the different parameters affecting transfection is crucial for optimal, reproducible, and trustable results. Following these seven tips will ensure reliable results.
    1. Adapt the transfection conditions to your experiment. Transfection conditions should be optimized according to the cells, the size of the plasmid, the number of plasmids, the expression pattern of the gene of interest, the culture vessel, and the transfection reagent. Reoptimize the conditions for each new cell line.
    2. Transfect healthy cells. Passage cells at least twice after thawing to allow recovery before transfection, and use cells at low passage number (< 20 passages). Discard overconfluent cells. Regularly check for mycoplasma contaminations. Seed cells the day before transfection accordingly to the confluency recommended by the transfection reagent provider.
    3. Follow the transfection reagent protocol. Some reagents are inhibited by serum or antibiotics, while others may be used in serum- and antibiotic-containing medium, hence reducing the risks of toxicity and the number of steps in the protocol. Check the recommended cell confluency, as well as the recommended DNA amount and reagent volume.
    4. Work with high-quality DNA preparation. Check for RNA contamination by agarose gel electrophoresis and ethidium bromide staining. Measure UV absorbance at 280 nm. OD260/280 ratio should reach at least 1.8. Resuspend the plasmid in deionized water or TE buffer at a concentration of ca. 1 µg/µl. Aliquot the plasmid preparation and store at -20°C to avoid freeze/thaw cycles.
    5. Check serum quality. Some serum lots may inhibit drastically transfection efficiency, hence resulting in lower silencing efficiency. Check transfection efficiency of different serum lots before purchasing a new batch of serum. Also ensure that the medium used allows for efficient transfection, as some media coumpound may decrease transfection efficiency.
    6. Minimize cytotoxicity by using low DNA amount and low transfection reagent volume. Check that the target gene does not affect cell viability. Analyze transfection at an earlier time point (24 h after transfection instead of 48 h for instance).
    7. Use appropriate controls. Use a reporter gene to set up and optimize transfection conditions, as those may vary depending on the cells to transfect. Various reporter systems are commercially available: Renilla Luciferase and GFP (Green Fluorescent Protein) are the most commonly used.

Tuesday, July 3, 2012

Desmoid tumor: benign but nasty

http://www.doereport.com/imagescooked/1482W.jpg
Desmoid tumor, also called deep-seated fibromatosis, is a benign tumor that is nonetheless a nasty beast. It is composed of fibroblasts, and it often presents as a large, infiltrative masses. Desmoid tumors may occur in patients with familial adenomatous polyposis (also called Gardner syndrome), an autosomal dominant disorder characterized by innumerable colon polyps (hence the name), as well as other lesions such as osteomas, jaw osteomas, odontomas, thyroid carcinoma, epidermoid cysts, fibromas, and sebaceous cysts. If the colon is not removed in a patient with familial adenomatous polyposis, the chance of colon carcinoma is virtually 100%.
Back to desmoid tumors. These tumors usually present as firm, rubbery, ill-defined, infiltrative masses. They may occur in extra-abdominal regions (for example, in the shoulder or thigh), within the abdominal wall itself (often attached to the rectus abdominus), or in the intra-abdominal region. Histologically, desmoid tumors are composed of bland-appearing fibroblasts in broad fascicles that infiltrate surrounding tissue. Check out the photo above: you can see muscle fibers being splayed apart by benign-looking, round-to-spindly tumor cells.
Although benign, desmoid tumors can act nasty. They are locally aggressive and invasive, and if you don't excise them completely, they are likely to recur. Treatment with things that you normally only use for malignancies, such as tamoxifen, chemotherapy and radiation, has been effective in many cases.