Multiple myeloma is a type of cancer that affects plasma cells. This disease can lead to infections, kidney problems, and bone pain or fractures. There have been great improvements in the treatment of multiple myeloma in recent years. However, most people are still not cured by current therapy. Treatments that use the immune system have shown great promise. One important example is CAR T-cell therapy. CAR T cells are made by taking a patient’s T cells (a type of immune cell), and changing them so they can recognize and kill cancer cells. These cells are then given back into the patient by an intravenous infusion. CART cell therapy has resulted in dramatic improvements in outcomes for patients with multiple myeloma. Our group has studied a new combination approach to improve upon responses to CART cell therapy. We have developed a personalized cancer vaccines using a patient’s own cancer cells. To make the vaccine, a patients plasma cells are collected from the bone marrow and are combined with immune cells called dendritic cells, which help activate the immune system. In a national study, this vaccine was shown to be safe, could be made at centers across the country, and was shown to stimulate immune responses. In this new study will test the vaccine in combination with CAR T-cell therapy. This DC/MM fusion vaccine has the potential to stimulate a broad immune response, preventing the development of resistance and can expand the CART cells to enhance their durability and effect.
This project is about making a type of cancer treatments called antibody-drug conjugates, or ADCs. ADCs are protein-based therapies designed like guided missles. They carry strong cancer-fighting drugs and deliver them directly to cancer cells using antibodies. But in many cases, the drug doesn’t get inside the cancer cell well enough, so the treatment doesn’t work as well as it could. We are trying to solve this problem by using a special feature on the surface of cancer cells called an internalizing receptor. This is a protein that acts like a fast-moving doorway—it pulls things inside the cell quickly. By connecting the drug to an antibody that targets this fast moving receptor, we hope to get more of the medicine inside the cancer cell, where it can do its job. We are focusing on two hard-to-treat cancers: triple-negative breast cancer and some types of lung cancer. We will test our new treatment in the lab and in models of these cancers. We will also study large research databases to learn which types of tumors might respond best. This research matters because many people with cancer still don’t have good treatment options. If this new approach works, it could lead to more effective and more targeted cancer treatments. It may help more patients benefit from ADCs, especially those with cancers that don’t respond well to current therapies.
Multiple myeloma and AL amyloidosis are incurable cancers of blood cells. These blood cells are called plasma cells. There is only one therapy that is available for AL amyloidosis patients. In severe stages, AL amyloidosis patients survive less than one year. Amyloidosis plasma cells cause damage to the body by spilling in the blood a sticky protein. These sticky proteins attach to each other and build up in the heart. Buildup of proteins in the heart causes progressive poor function. AL amyloidosis is a major cause of malfunctioning of the heart and death. To cure AL amyloidosis, we need drugs that 1- stop plasma cells from spilling sticky proteins; 2- kill the cancer plasma cells; and 3-remove the buildup of sticky proteins from the heart. These drugs do not exist, because we do not know how sticky proteins get spilled and why the build-up is not removed.Recently, our lab found out how sticky proteins get out of amyloidosis plasma cells. We also showed that if we stop this process, cancer cells die. Finally, we discovered that cleaner cells that should remove sticky proteins from the heart are reduced and do not function in amyloidosis patients. Based on these data, we will make two novel drugs. One will stop spillage of sticky proteins and kill cancer cells. The other will remove sticky protein from the heart without the need of cleaner cells. Our work is doable and will create therapeutic options for AL amyloidosis patients that could cure their disease.
Our lab works on finding new and better immunotherapies for cancer. To do this, we try to understand how cancer cells hide from the immune system. We also try to understand which proteins could be targeted with a drug to help the immune system find and kill cancer cells more effectively.
To accomplish this, we are studying ancient viruses that live in the DNA of all human cells. Usually, these viruses are kept quiet by “epigenetic repressors”. Our lab is studying how to turn on these viruses in cancer cells, with the goal of activating the immune system to kill the tumor.
We envision this approach leading to a new type of cancer therapy, which could be used in patients that don’t respond to standard immunotherapies.
Funded by the Dick Vitale Pediatric Cancer Research Fund with support from Hockey Fights Cancer
Despite significant advances in the treatment of pediatric cancer, leukemia remains the second leading cause of cancer related death in children. T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive cancer that affects both children and adults. When T-ALL does not respond to chemotherapy or returns after initial treatment (relapses), there are few treatment options. New treatments are needed for T-ALL. The way cancer cells use energy or develop building blocks for growth is different from normal cells. We are working to understand how these energy and building processes within T-ALL cells are altered, with the hope that we can use this as a vulnerability for developing new therapies. We are particularly interested in drugs that alter how the cells produce a building block called methionine, and we are testing how these drugs work in T-ALL. Our ultimate goal is to find effective and non-toxic treatments for T-ALL.
Colon cancer is a devastating disease. It is one of the leading causes of death from cancer, even after decades of research. Scientists have found that cancer changes the way cells use nutrients to grow rapidly and spread to other parts of the body. Inside cancers cells, specialized factors called enzymes help cancer do this. These enzymes help cancer cells use particular nutrients to keep growing and living. There is one kind of enzyme, called creatine kinases (CKs), that are extremely important for colon cancer cells but not for healthy ones. Because of this, we think we might be able to create a medicine that attacks CKs to treat colon cancer without affecting the rest of the body.
We have developed a new medicine that stops CKs and is effective at killing cancer cells that need CKs to live. Our plan is to develop this medicine to work in animals with colon cancer. This is the critical first step before we can try it in people. If we succeed, we could have a brand-new way to fight colon cancer by stopping the CK enzymes that cancer needs to grow and spread. We hope that this new treatment could be very strong against colon cancer that has spread to other parts of the body.
KRAS mutations are common driver mutations in cancer (ie a mutation that makes the cancer come to be) and particularly common in GI cancers. There are new drugs that target these KRAS mutations. Some drugs cover all KRAS and RAS mutations and some cover specific mutations but the drugs work for short periods of time, even when they work, and many patients still do not benefit at all from these drugs. We are trying to understand why the drugs do or do not work and ways to not only make the drugs work for more people, but when they work, make them work for longer periods of time.
Colorectal cancer (CRC) remains a major cause of cancer-related deaths, mostly due to the risk of cancer metastasis to the liver. This is because while we can detect and treat cancer that is limited to the primary location, we are, till date, unable to treat cancer that spreads to other parts of the body, creating the urgent need for new, life-saving treatments to fight cancer spread. Several studies have established that long-term use of aspirin, a common and inexpensive medicine, can help lower the risk of CRC. However, recent results from studying patients surprisingly showed that aspirin can increase the risk of cancer metastasis and death, especially among older adults. We further discovered that while aspirin may slow down how CRC starts, it can also help the growth of tumors after they have spread to the liver. We also found that this unexpected effect of aspirin on cancer spread is via suppressing the body’s immune system and its ability to fight cancer cells. This means drugs that counter the effect of aspirin may be able to help our immune system fight cancer spreading to the liver. We propose to understand how aspirin influences the immunity in the liver to fight cancer, as well as test whether drugs that oppose aspirin’s effects can inhibit cancer metastasis. We will also test the association of aspirin with metastasis within CRC patients. Ultimately, our new understanding of this process will help us build new treatments to fight cancer that spreads to the liver.
High-grade gliomas represent the leading cause of brain cancer-related death in both children and adults. A fundamental shift in our approach to glioma therapy is thus in dire need. Though much of cancer research has focused on attacking the malignant tumor cells, our focus here is to target the surrounding tissue that provides growth cues for the cancer to thrive. I recently discovered that one important cue for pediatric gliomas is the activity of neurons within the brain. We found that pediatric gliomas grow at a faster rate in response to elevated nervous system activity. Our work has led us to the discovery that these tumors directly communicate with electrically active neurons by plugging into the neuronal network to receive growth signals. These studies highlight the unexplored potential to target neuron-glioma circuit dynamics for therapy. We propose to take a unique new approach to treating these cancers by interrupting the electrical activity across these cancerous circuits. We aim to reframe our understanding of these tumors by investigating how they integrate electrical inputs and hijack normal mechanisms of brain development. A comprehensive understanding of these dynamic network interactions may lead to new therapeutic interventions aimed at normalizing the tumor microenvironment.
Uveal (ocular) melanoma (UM) is a rare type of eye cancer. When the cancer spreads to other sites in the body, outcomes are often poor. Unlike skin melanoma, UM does not respond well to new types of therapy focused on the immune system. Better treatments are urgently needed. Our lab has recently shown that UM tumors frequently lose a sex chromosome (Y in tumors from men, X in tumors from women). Loss of the male Y chromosome (LOY) in men and loss of one X chromosome (LOX) in women occurs in about half of tumors, thereby affecting many patients. We found that LOY is linked to worse survival, and that LOY and LOX can give clues whether a patient’s tumor will spread to other sites in the body. I now propose to study the exact role of LOY in UM with a combined approach. Using genome analysis, gene knock-outs and drug screens in uveal melanoma models, our team hopes to find the weaknesses of UM tumors with LOY. These weaknesses could suggest new treatments for patients. LOY is not limited to UM but also occurs frequently in other tumor types. Therefore, the proposed work has far-reaching implications for finding better treatments for many people living with cancer.
