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Volume 11 Issue 6, June 2005

Simultaneous imaging of tumor blood vessels (red) and collagen fibers (blue) using two-photon microscopy and quantum dots. In this issue, Jain and colleagues show that quantum dots can be customized to concurrently image and differentiate tumor vessels from both the perivascular cells and the matrix. Image courtesy of Mark Stroh, Lance L. Munn and Edward B. Brown.

Volume 11 Issue 6

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  • Developing an effective AIDS vaccine may hinge on understanding how to elicit antibodies that recognize and disable the HIV virus—but first, experiments in people must show that such antibodies are even useful in controlling infection. Information from a recent human trial provides hope that controlling the virus by neutralizing antibodies might be possible. And another study examines why the antibodies are so difficult to elicit (pages 615–622).

    • David C Montefiori
    News & Views

  • The transcription factor STAT3 is overactive in many tumors and has attracted attention as a drug target. But in vivo evidence suggesting that inhibiting STAT3 could counteract cancer has been incomplete. The picture in the whole animal now begins to clarify, and it bodes well for this approach (pages 623–629).

    • James E Darnell Jr
    News & Views

  • Fish oil has anti-inflammatory properties, but for years the mechanism has remained obscure. That mechanism now begins to come to light—and aspirin may feed into the system by promoting the production of lipid mediators derived from the oil.

    • Stephen M Prescott
    • William F Stenson
    News & Views

  • The theory that oxidative stress limits lifespan and causes age-related disease rests on experiments in invertebrates and correlative evidence from studies in mammals. This theory now gains a strong experimental basis in mammals.

    • M Flint Beal
    News & Views

  • Mycobacterium tuberculosis adapts to the low-glucose conditions in its host by using lipids as a fuel source. This adaptation reveals a weak flank that might be exploited in drug development, as shown in work on mice and human cells (pages 638–644).

    • H I Boshoff
    • C E Barry III
    News & Views

  • Neutrophils persist in the joints of individuals with inflammatory arthritis, where they contribute to disease. The molecular basis of this persistence is now shown to hinge on the forkhead transcription factor Foxo3a. Foxo3a suppresses expression of Fas ligand, preventing neutrophil apoptosis (pages 666–671).

    • Foo Y Liew
    • Iain B McInnes
    News & Views

  • A high-fat diet can lead to insulin resistance and the development of the metabolic syndrome, a condition associated with diabetes, heart disease and other ailments. A G-protein-coupled receptor on the surface of insulin-secreting cells in the pancreas senses lipids and may promote the metabolic syndrome under high-fat conditions.

    • Gema Medina-Gomez
    • Antonio Vidal-Puig
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