Jason Locasale | |
---|---|
Born | New Jersey, U.S. |
Nationality | American |
Alma mater | Rutgers University (B.A.) Massachusetts Institute of Technology (Ph.D.) Harvard University (Postdoctoral Fellowship) |
Scientific career | |
Fields | Cancer Research, Metabolism, Metabolomics, Nutrition |
Institutions | Duke University |
Academic advisors | Lewis C. Cantley |
Jason W. Locasale is an American scientist and university professor. His focus is on metabolism.
Locasale graduated summa cum laude from Rutgers University with a dual degree in Chemistry and Physics. While completing his undergraduate degree, he received initial training in research in biochemistry and structural biology under Helen Berman. He earned a Ph.D. from the Massachusetts Institute of Technology. He went on to complete a postdoctoral fellowship at Harvard Medical School under Lewis C. Cantley. [1] [2]
He is currently an associate professor with tenure at Duke University School of Medicine. [3]
Locasale has pioneered the use of methods to study metabolism using primarily liquid chromatography-mass spectrometry (LC-MS), [4] in particular having developed methods to gain insights into numerous biological processes at once. [5] He has made contributions to understanding the role of serine synthesis and one carbon metabolism in cancers, [6] [7] [8] [9] [10] defining the quantitative, mechanistic principles of the Warburg Effect [11] and altered glucose metabolism in cancer, [12] and the role of metabolism in mediating chromatin status and epigenetics. [13] [14] [15] His recent work which has gained widespread public attention [16] [17] [18] [19] has focused on the effects on dietary methionine restriction and diet in general as a therapeutic approach [20] [21] to extend lifespan and shape tumor response to therapy. [22] [23] [24]
His research approaches integrate computational modeling, cell biology, mouse models, and genetic and biochemical experimentation to understand metabolic processes and their contribution to health. [25] [ non-primary source needed ] Currently, his research is in three interconnected areas: (1) Quantitative biology of metabolism, (2) Dietary interventions and metabolic therapeutics in health and cancer, and (3) The mechanistic basis between the interaction of metabolism and epigenetics. [26]
Locasale is a recipient of the National Institutes of Health Pathway to Independence Award, the Benjamin Trump Award for Excellence in Cancer Research, and the American Cancer Society Research Scholar Award, and the JH Quastell Lectureship at McGill University. [27] He serves on the editorial boards for a number of journals including PLoS Biology, Oncotarget, and Cell Stress, [28] [29] [26] and has served in advisory roles for a number of companies. He has also maintained advisory roles at a number of federal, private and international scientific agencies including the National Institutes of Health, the American Cancer Society, and the Israel Science Foundation.[ citation needed ] He is also widely accomplished in academic mentoring with students and trainees having received the nation's highest honors at the undergraduate, doctoral, and postdoctorals levels [30] [31] [ failed verification ].
Locasale has authored over 150 publications in peer-reviewed journals and numerous textbook chapters and patents. In 2019, he was named one of the most influential researchers of the past 10 years by Web of Science. [32] [33] [34]
S-Adenosyl methionine (SAM), also known under the commercial names of SAMe, SAM-e, or AdoMet, is a common cosubstrate involved in methyl group transfers, transsulfuration, and aminopropylation. Although these anabolic reactions occur throughout the body, most SAM is produced and consumed in the liver. More than 40 methyl transfers from SAM are known, to various substrates such as nucleic acids, proteins, lipids and secondary metabolites. It is made from adenosine triphosphate (ATP) and methionine by methionine adenosyltransferase. SAM was first discovered by Giulio Cantoni in 1952.
A salvage pathway is a pathway in which a biological product is produced from intermediates in the degradative pathway of its own or a similar substance. The term often refers to nucleotide salvage in particular, in which nucleotides are synthesized from intermediates in their degradative pathway.
Cancer research is research into cancer to identify causes and develop strategies for prevention, diagnosis, treatment, and cure.
In oncology, the Warburg effect is the observation that most cancer use aerobic glycolysis for energy generation rather than the mechanisms used by non-cancerous cells. This observation was first published by Otto Heinrich Warburg, who was awarded the 1931 Nobel Prize in Physiology for his "discovery of the nature and mode of action of the respiratory enzyme". The existence of the Warburg effect has fuelled popular misconceptions that cancer can be treated by dietary reductions in sugar and carbohydrate.
Sirtuins are a family of signaling proteins involved in metabolic regulation. They are ancient in animal evolution and appear to possess a highly conserved structure throughout all kingdoms of life. Chemically, sirtuins are a class of proteins that possess either mono-ADP-ribosyltransferase or deacylase activity, including deacetylase, desuccinylase, demalonylase, demyristoylase and depalmitoylase activity. The name Sir2 comes from the yeast gene 'silent mating-type information regulation 2', the gene responsible for cellular regulation in yeast.
Histone methylation is a process by which methyl groups are transferred to amino acids of histone proteins that make up nucleosomes, which the DNA double helix wraps around to form chromosomes. Methylation of histones can either increase or decrease transcription of genes, depending on which amino acids in the histones are methylated, and how many methyl groups are attached. Methylation events that weaken chemical attractions between histone tails and DNA increase transcription because they enable the DNA to uncoil from nucleosomes so that transcription factor proteins and RNA polymerase can access the DNA. This process is critical for the regulation of gene expression that allows different cells to express different genes.
Methyltransferases are a large group of enzymes that all methylate their substrates but can be split into several subclasses based on their structural features. The most common class of methyltransferases is class I, all of which contain a Rossmann fold for binding S-Adenosyl methionine (SAM). Class II methyltransferases contain a SET domain, which are exemplified by SET domain histone methyltransferases, and class III methyltransferases, which are membrane associated. Methyltransferases can also be grouped as different types utilizing different substrates in methyl transfer reactions. These types include protein methyltransferases, DNA/RNA methyltransferases, natural product methyltransferases, and non-SAM dependent methyltransferases. SAM is the classical methyl donor for methyltransferases, however, examples of other methyl donors are seen in nature. The general mechanism for methyl transfer is a SN2-like nucleophilic attack where the methionine sulfur serves as the leaving group and the methyl group attached to it acts as the electrophile that transfers the methyl group to the enzyme substrate. SAM is converted to S-Adenosyl homocysteine (SAH) during this process. The breaking of the SAM-methyl bond and the formation of the substrate-methyl bond happen nearly simultaneously. These enzymatic reactions are found in many pathways and are implicated in genetic diseases, cancer, and metabolic diseases. Another type of methyl transfer is the radical S-Adenosyl methionine (SAM) which is the methylation of unactivated carbon atoms in primary metabolites, proteins, lipids, and RNA.
Serine/threonine-protein kinase PAK 1 is an enzyme that in humans is encoded by the PAK1 gene.
Serine/threonine kinase 11 (STK11) also known as liver kinase B1 (LKB1) or renal carcinoma antigen NY-REN-19 is a protein kinase that in humans is encoded by the STK11 gene.
Serine/threonine-protein kinase PAK 5 is an enzyme that in humans is encoded by the PAK5 gene.
Serine/threonine-protein kinase PLK4 also known as polo-like kinase 4 is an enzyme that in humans is encoded by the PLK4 gene. The Drosophila homolog is SAK, the C. elegans homolog is zyg-1, and the Xenopus homolog is Plx4.
Pyruvate kinase isozymes M1/M2 (PKM1/M2), also known as pyruvate kinase muscle isozyme (PKM), pyruvate kinase type K, cytosolic thyroid hormone-binding protein (CTHBP), thyroid hormone-binding protein 1 (THBP1), or opa-interacting protein 3 (OIP3), is an enzyme that in humans is encoded by the PKM2 gene.
Wafik El-Deiry is an American physician and cancer researcher who is the Associate Dean for Oncologic Sciences at the Warren Alpert Medical School, Brown University, Director of the Cancer Center at Brown University, and the Director of the Joint Program in Cancer Biology at Brown University and its affiliated hospitals. He was previously deputy director of Translational Research at Fox Chase Cancer Center, where he was also co-Leader of the Molecular Therapeutics Program.
In molecular biology, miR-137 is a short non-coding RNA molecule that functions to regulate the expression levels of other genes by various mechanisms. miR-137 is located on human chromosome 1p22 and has been implicated to act as a tumor suppressor in several cancer types including colorectal cancer, squamous cell carcinoma and melanoma via cell cycle control.
Transgenerational epigenetic inheritance is the transmission of epigenetic markers and modifications from one generation to multiple subsequent generations without altering the primary structure of DNA. Thus, the regulation of genes via epigenetic mechanisms can be heritable; the amount of transcripts and proteins produced can be altered by inherited epigenetic changes. In order for epigenetic marks to be heritable, however, they must occur in the gametes in animals, but since plants lack a definitive germline and can propagate, epigenetic marks in any tissue can be heritable.
mTOR Complex 2 (mTORC2) is an acutely rapamycin-insensitive protein complex formed by serine/threonine kinase mTOR that regulates cell proliferation and survival, cell migration and cytoskeletal remodeling. The complex itself is rather large, consisting of seven protein subunits. The catalytic mTOR subunit, DEP domain containing mTOR-interacting protein (DEPTOR), mammalian lethal with sec-13 protein 8, and TTI1/TEL2 complex are shared by both mTORC2 and mTORC1. Rapamycin-insensitive companion of mTOR (RICTOR), mammalian stress-activated protein kinase interacting protein 1 (mSIN1), and protein observed with rictor 1 and 2 (Protor1/2) can only be found in mTORC2. Rictor has been shown to be the scaffold protein for substrate binding to mTORC2.
SET domain containing 6 is a protein in humans that is encoded by the SETD6 gene.
DNA methylation in cancer plays a variety of roles, helping to change the healthy cells by regulation of gene expression to a cancer cells or a diseased cells disease pattern. One of the most widely studied DNA methylation dysregulation is the promoter hypermethylation where the CPGs islands in the promoter regions are methylated contributing or causing genes to be silenced.
Anjana Rao is a cellular and molecular biologist of Indian ethnicity, working in the US. She uses immune cells as well as other types of cells to understand intracellular signaling and gene expression. Her research focuses on how signaling pathways control gene expression.
Paola A. Marignani is a scientist and Full Professor at Dalhousie University in the Faculty of Medicine, Department of Biochemistry and Molecular Biology. She is best known for her research on the tumor suppressor kinase LKB1, and its role in regulating the chromatin remodeling protein SMARCA4 and modeling metabolic processes in breast and lung cancers.