When we think of viruses, we often think of diseases, pandemics and death. Our impression of viruses is that they are “bad”. But viruses could also be a possible cure for the deadliest disease in modern history: cancer. The therapeutic effects of “good” cancer-killing oncolytic viruses have been documented over a century ago. Records from as early as 1904 described a 42-year old woman with acute leukemia who experienced temporary remission after an influenza infection. Other early reports showed spontaneous remission of Hodgkin lymphoma and Burkitt’s lymphoma after natural infections with the measles virus.

Despite the long history, oncolytic viruses have only recently gained momentum in the scientific community. Dr. Aldo Pourchet, CSO and co-founder of Omios Biologics—a biotech startup in the San Francisco Bay area—is determined to harness the power of oncolytic viruses to develop a new generation of cancer immunotherapy.

How Oncolytic Viruses Work

“One thing that we know for sure is that you need the immune system to fight the cancer,” says Pourchet. “You need to recruit the immune system, and probably the best thing we know for recruiting the immune system is viruses. Our immune system evolved to detect them immediately. That’s why we are still on Earth. It’s because we have been able to fight deadly viruses.”

Continue reading “Oncolytic Viruses: Models and Assays for Developing Viruses That Can Kill Cancer”

Wastewater surveillance of SARS-CoV-2 is an increasingly common method for monitoring the spread of COVID-19 within a community. As researchers and public health officials around the world are working together to set up wastewater surveillance systems, there is an urgent need to establish standard SARS-CoV-2 detection methods.

A key leader in this new field is Dr. Gloria Sanchez. She is a tenured scientist at the Institute of Agrochemistry and Food Technology, a center within the Spanish National Research Council. Before the COVID-19 pandemic, her team focused on detecting human enteric viruses in food and water. But soon, detecting SARS-CoV-2 in wastewater became their main focus.

Continue reading “Comparing Methods for Detecting SARS-CoV-2 in Wastewater”

What is the Developmental Clock?

The development of the human embryo is a complicated process that involves careful coordination of thousands of genes. Just like musical instruments in an orchestra, each gene performs its role—sometimes silent, sometimes intense—but always right on cue. The tempo of the symphony, or the speed of embryonic development, depends on an intrinsic biological clock known as the developmental clock. The developmental clock is like the conductor of the orchestra, controlling the tempo of the music and ensuring that each gene is expressed at the right moment with the right intensity. If just one gene is expressed too soon or going one beat too fast, it could disrupt the harmony of the whole symphony, resulting in an improperly developed embryo.

One example of what could happen when the developmental clock is disrupted is a disease called spondylocostal dysostosis (SCDO). SCDO is a genetic disorder that causes abnormal formation of the spine and ribs. Patients often have a short neck and trunk, and an abnormal curvature in the spine (scoliosis). SCDO can be caused by a mutation in the HES7 gene. HES7 is an “oscillating gene”, a kind of gene that is expressed in a rhythmic pattern—like the beating of a drum. This rhythm is essential for forming our ribs and each vertebra of our spine—a process known as “segmentation”—during early embryonic development.

Continue reading “Observing the Human Developmental Clock with Bioluminescence Live-Cell Imaging”