Multidisciplinary efforts driving translational theranostics

Theranostics: is it really a revolution? Evaluating a new term in medicine

Theranostics or theragnostics are new terms which start to appear occasionally in publications from 2001 onwards, with a marked increase in references from 2011. In the last few years more than 1100 articles using this term were published each year. In 2011 the journal Theranostics was founded. This paper addresses the question of whether this new term is appropriate. The etymology of the term is analysed. A literature search for definitions of "theranostics" is carried out and the definitions examined as to whether they give grounds for justifying the use of a new term. The differences between diagnostics and therapy are explored. A broad and a narrow definition are found. According to the broad definition theranostics provides a closer relationship between diagnostics and therapy. According to the narrow definition diagnostics and therapy become a single intervention. On closer examination it turns out that in the narrow definition the diagnostics capacities are limited to monitoring. Neither the broad nor the narrow definition actually demonstrate a new concept in medicine. Rather, they describe the well-known practice of medical decision making. In this respect, the new term cannot be justified. The level of diagnostics is new (molecular/nano) but not the relationship between diagnostics and therapy. The term theranostics is misleading as it obscures the existing differences between diagnostics and therapy and wrongly insinuates that steps between diagnostics and therapy could be omitted.

Therapeutic application of anti-angiogenic nanomaterials in cancers

Angiogenesis, the formation of new blood vessels from pre-existing vasculature, plays a vital role in physiological and pathological processes (embryonic development, wound healing, tumor growth and metastasis). The overall balance of angiogenesis inside the human body is maintained by pro- and anti-angiogenic signals. The processes by which drugs inhibit angiogenesis as well as tumor growth are called the anti-angiogenesis technique, a most promising cancer treatment strategy. Over the last couple of decades, scientists have been developing angiogenesis inhibitors for the treatment of cancers. However, conventional anti-angiogenic therapy has several limitations including drug resistance that can create problems for a successful therapeutic strategy. Therefore, a new comprehensive treatment strategy using antiangiogenic agents for the treatment of cancer is urgently needed. Recently researchers have been developing and designing several nanoparticles that show anti-angiogenic properties. These nanomedicines could be useful as an alternative strategy for the treatment of various cancers using anti-angiogenic therapy. In this review article, we critically focus on the potential application of anti-angiogenic nanomaterial and nanoparticle based drug/siRNA/peptide delivery systems in cancer therapeutics. We also discuss the basic and clinical perspectives of anti-angiogenesis therapy, highlighting its importance in tumor angiogenesis, current status and future prospects and challenges.