Stem Cell Injections for Osteoarthritic Knees

Some friends recently asked me about getting stem cell injections for painful knees with osteoarthritis (Figure 1). Should they push their doctors for this treatment? Were they, and consequently their stem cells, going to be too old if they waited? I started my investigation at PubMed, searching for “stem cells” and “osteoarthritis,” which produced 1249 … Read more

Virally Modified Cells Regenerate Normal Skin

Growing_skin_in_culture

Stem cells hold great promise for medical intervention. However, it has been difficult to leverage these cells effectively. In the study by Hirsch and colleagues, a collaboration between doctors and researchers saved the life of a child with a skin disorder called junctional epidermolysis bullosa (JEB). JEB is a genetic disease caused by mutations in … Read more

Bionic Organs with Silicon Nanopore Membranes

Artificial_kidney_device

One of the challenges to building artificial organs is finding or creating suitable materials for use in such devices. If the device contains living cells, then those cells need to receive nutrients from, exchange gases with, and send cellular waste products into blood. In addition, the cells should also respond appropriately to circulating regulatory signals, … Read more

Leveraging Cellular Mechanical Signaling to Improve Drug Specificity

Mesenchymal_stem_cells_in_culture

Toxicity to healthy cells limits the usefulness of conventional chemotherapeutic agents. These drugs kill rapidly dividing cells of all types, not just those in a tumor. In addition to dividing rapidly, some cancer cells establish metastases that have a different stiffness than the surrounding tissue. This mechanical property of a cellular microenvironment is referred to … Read more

Fighting Cancer with the Immune System: Lessons from CAR T Cell Therapy

CAR-T-cell-killing-cancer-cell-illustration

The Promise of CAR T Cell Therapy Many strategies that train the immune system to recognize and attack cancer are in development or undergoing clinical trials (1). However, these strategies have the potential to cause life-threatening consequences, as evidenced by the latest report of the death of another patient receiving CAR T cell therapy (2). CAR … Read more