An enormous spectrum of diseases that all originate from uncontrolled cellular growth can be described as cancer. Cancers can be further depending on the type, they are broadly divided into malignant tumors (able to invade normal tissues), or tumors (unable to metastasize), and can be classified by their tissue, cell type, or organ of origin.
Cancer Biology is the field of research to discover genetic, metabolic, and biochemical abnormalities in tumor cells and nonmalignant cells. The biology of cancer cells is different than normal cells, thus research in cancer biology involves understanding the biology of cancer in order to develop more effective ways to diagnose, prevent, and treat cancer.
To fully understand cancer biology, an extensive range of expertise is required. There are many areas of current active intense research aimed at understanding the biology of cancer and to be able to better treat it.
Ongoing Latest Research in Cancer Biology
The simple question of “What is normal and what isn’t normal?” is where research on the biology of cancer starts.
There has been a broad base of knowledge created by the basic research in cancer biology in the last few decades. Without the knowledge that has come from investigating basic questions about the biology of cancer, many advances in the prevention, diagnosis, and treatment of cancer would not have occurred.
- The researchers now have a broader and increasing understanding of the various mutations that drives a vast array of cancers.
- Many aspects of cancer biology, including how the immune system responds to tumors and how the normal biological programs of cell proliferation and death are altered during cancer are being studied in detail through new data and research approaches.
- The discovery of tumor stem cells in a range of cancers allowed researchers to investigate the role of these cells at different stages of the disease and these rare cells could be identified in both hematologic cancers and solid tumors.
- The interactions of cancer cell within the tumor or the host microenvironment could be studied in detail with the recognition that the cancer cell is in a symbiotic relationship with the tumor microenvironment.
- Researchers are now studying the molecular mechanisms and signaling pathways of cancer cell development, metastasis, and proliferation.
- The role of the human microbiome (the community of microorganisms that inhabit the human body) in the initiation and progression of tumors is also being investigated now.
- The functional effects of genetic alterations that underlie the development of cancer have been studied with the help of new genetic technologies developed over the past decade. The mechanisms of DNA damage and repair, gene regulation in cancer cells, and the epigenetic changes associated with cancer are also being studied using these tools.
- The structures of mutant proteins involved in cancer, such as RAS, and other molecules are being characterized in great detail with the introduction of increasingly powerful structural biology approaches.
- Cancer biology is being explored through systems biology approaches now. The complex interactions among components of a biological system can be described and predictions that help guide and further refine experimental science can be made using a variety of information and tools, such as mathematical modeling.
- Molecular alterations that are shared among different types of cancer are revealed in studies of cell signaling pathways in normal cells and cancer cells.
The development of new clinical interventions has become possible by the immense knowledge gained from such studies, which has deepened the understanding of cancer biology, eventually pointing to possible strategies for treatment.
Some of the Major Researches in Cancer Biology are as follows:
IMMUNOTHERAPY
In cancer treatments, immunotherapy is an established pillar. This therapy involves boosting the body’s natural defenses to fight cancer. The power of the body’s immune system is used in this therapy in order to control, prevent, and eliminate cancer. Immunotherapy has shown it to be effective in treating various types of cancer. Therapies like immune-checkpoint inhibitors (ICIs) and engineered T cells have engendered much excitement in such a short time. Monoclonal antibodies and tumor-agnostic treatments, such as checkpoint inhibitors, Oncolytic virus therapy, T-cell therapy, and CAR-T ( Chimeric antigen receptor) therapy are some of the many types of immunotherapy. On the basis of both the T cell composition and immune-checkpoint environment within each patient’s cancer, the future of precision immunotherapy will continue to become patient-specific.
CAR T IMMUNOTHERAPY. ARTIFICIAL T CELL RECEPTORS ARE PROTEINS THAT HAVE BEEN ENGINEERED FOR CANCER THERAPY (KILLING OF TUMOR CELLS). GENETICALLY ENGINEERED.
CANCER & MICROBIOME
The collection of all of the gene sequences from a community of microbes in the human body is referred to as the microbiome. Microbiomes’ effects on cancer may be indirect or direct. A systems biology approach is required for the interactions between the two complex systems, microbiomes, and cancers. Currently, there is ongoing research and investigation in trials on the treatments that alter the microbiome composition of cancer patients. There can be an impact on cancer initiation, progression, and response to therapy, by the human microbiome. Research is done on new diagnostics and treatments that can be yielded by the mechanisms by which microbiomes impact cancers. Scientists are working on a multidisciplinary approach that combines cancer cell biology, immunology, microbial ecology, and computational biology – a systems biology approach in order to understand the role of host-associated microbial communities in cancer systems.
GENOMICS & NEXT-GEN SEQUENCING
The study of the totality of DNA sequence and gene expression differences between normal host cells and the tumor cells is known as cancer genomics. Genomics in cancer aims to understand the evolution of the cancer genome under mutation and selection by the body environment, the immune system, and therapeutic interventions and to understand the genetic basis of tumor cell proliferation. Recently we saw a groundbreaking CRISPR study where researchers discovered thousands of key genes essential for cancer cell growth by performing genome-scale CSIRPR-Cas9 screens to disrupt every gene in over 300 cancer models from 30 cancer types. New drug targets for tumors such as breast and ovarian cancer were presented through such researches. To learn how cancer-associated mutant proteins affect other proteins, researchers are integrating genomic analysis with the analysis of the proteins in tumor cells through approaches that allow the characterization of the entire proteome.
Researchers have been making good use of the power of next-generation sequencing in cancer for the assessment of multiple genomic alterations, to identify predictive biomarkers and fusion detection. Most recent researches have explored how all known biomarkers can be evaluated in a single test using comprehensive genomic profiling, enabled by next-generation sequencing.
DIAGNOSTIC METHODS
The concept of artificial intelligence in oncology has gained more attention over the past few years. Recently researchers used machine learning methods and uncovered five new types of breast cancer disease, each matched to different personalized treatments by utilizing artificial intelligence to recognize patterns in breast cancer. Scientists are also using machine learning methods to improve diagnosing cancer. Detection of cancer was revolutionized with the invention of the breath biopsy using a breathalyzer. The working of the breathalyzer involves analyzing exhaled breath samples with potential biomarker volatile organic compounds.
Research on Blood Tests to detect cancer has improved over the years. Researchers recently developed a test that detects the presence of tumor-associated antigens, which are indicative of the disease, and this blood test was able to detect breast cancer up to 5 years before any clinical signs.
PRECISION MEDICINE
Based on a genetic understanding of a patient’s disease, precision medicine is an approach to patient care that allows doctors to select treatments that are most likely to help patients in their condition, also known as personalized medicine. This area of cancer research has grown with recent advances in science and technology.
USING THE GENETIC CHANGES IN A PATIENT’S TUMOR TO DETERMINE THEIR TREATMENT IS KNOWN AS PRECISION MEDICINE. CREDIT: NATIONAL CANCER INSTITUTE
In cancer such as chronic lymphocytic leukemia (CLL) and acute myeloid leukemia (AML), precision medicine is showing great promise as it involves giving patients a drug based on their molecular profile rather than taking a one-size-fits-all approach. Researchers stress the impact precision medicine can have as it directly attacks the tumor and it can protect healthy cells that are damaged during chemotherapy and radiotherapy, thereby reducing severe toxicity in healthy tissues due to these treatments. There are majorly two emerging developments in targeted cancer therapy: immune-based therapy and enzyme-/small molecules–based therapies.