Elaine Holmes | |
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Born | July 3, 1966 |
Education | University of London |
Employer | Murdoch University |
Known for | Metabolomic chemistry |
Title | Professor |
Website | https://researchportal.murdoch.edu.au/esploro/profile/elaine_holmes/output/publication?institution=61MUN_INST |
Elaine Holmes FAA is an Australian systems biologist, and chemist, who was elected a fellow of the Australian Academy of Science in 2023. She was awarded an ARC Laureate Fellowship in 2020. She is a computational biologist working in metabolomic phenotyping, [1] spectrometry and translational clinical medicine, [2] at Murdoch University, and also holds a chair at Imperial College. [3] [4]
Holmes received a BSc in biology from Goldsmiths College, University of London, and a PhD in analytical chemistry from Birkbeck College, at the University of London. [5] She was the first person in her family to attend university. [6] At Imperial College, Holmes was head of department of the Division of Computational and Systems Medicine, as well as a professor of chemical biology, located within the Department of Surgery and Cancer. [7] She was a professor of Computational Science at Murdoch University in 2024. [8]
Holmes is the Director of the Centre for Computational & Systems medicine, and Director and co-founder of Melico Sciences Limited, a UK-based precision nutrition start-up, and director of Metabometrix Limited, an Imperial College London spin-off company incorporated in April 2000 and specializing in molecular phenotyping, clinical diagnostics and toxicological screening via metabolomics.
Holmes was awarded a $3 million fellowship from the Australian Research Council for aging and biochemistry research. Her research involves gut microbial influences on human health, in particular, examining liver, metabolomic and gastrointestinal diseases. These diseases include diabetes and dementia. [9]
Holmes is on the Editorial Boards of the Journal of Biological Chemistry, and Analytical Biochemistry. [7] Her research has been described by the BBC, including impacts on the body from chamomile tea [10] and how herbal mixtures can help impact gut microbiome health. [11]
Holmes has over 92,000 citations, as at June 2024, according to Google Scholar. [12] Her H-index is 147, and she has publications in Science, [13] Nature Reviews, [14] Nature Protocols, the Proceedings of the National Academy of Sciences, [15] and Nature. [16] Holmes has also published with Fiona Woods, surgeon and burns specialist. [17]
Select publications include:
The human microbiome is the aggregate of all microbiota that reside on or within human tissues and biofluids along with the corresponding anatomical sites in which they reside, including the gastrointestinal tract, skin, mammary glands, seminal fluid, uterus, ovarian follicles, lung, saliva, oral mucosa, conjunctiva, and the biliary tract. Types of human microbiota include bacteria, archaea, fungi, protists, and viruses. Though micro-animals can also live on the human body, they are typically excluded from this definition. In the context of genomics, the term human microbiome is sometimes used to refer to the collective genomes of resident microorganisms; however, the term human metagenome has the same meaning.
Murdoch University is a public university in Perth, Western Australia, with campuses also in Singapore and Dubai. It began operations as the state's second university on 25 July 1973, and accepted its first undergraduate students in 1975. Its name is taken from Sir Walter Murdoch (1874–1970), the Founding Professor of English and former Chancellor of the University of Western Australia.
Metabolomics is the scientific study of chemical processes involving metabolites, the small molecule substrates, intermediates, and products of cell metabolism. Specifically, metabolomics is the "systematic study of the unique chemical fingerprints that specific cellular processes leave behind", the study of their small-molecule metabolite profiles. The metabolome represents the complete set of metabolites in a biological cell, tissue, organ, or organism, which are the end products of cellular processes. Messenger RNA (mRNA), gene expression data, and proteomic analyses reveal the set of gene products being produced in the cell, data that represents one aspect of cellular function. Conversely, metabolic profiling can give an instantaneous snapshot of the physiology of that cell, and thus, metabolomics provides a direct "functional readout of the physiological state" of an organism. There are indeed quantifiable correlations between the metabolome and the other cellular ensembles, which can be used to predict metabolite abundances in biological samples from, for example mRNA abundances. One of the ultimate challenges of systems biology is to integrate metabolomics with all other -omics information to provide a better understanding of cellular biology.
Gut microbiota, gut microbiome, or gut flora are the microorganisms, including bacteria, archaea, fungi, and viruses, that live in the digestive tracts of animals. The gastrointestinal metagenome is the aggregate of all the genomes of the gut microbiota. The gut is the main location of the human microbiome. The gut microbiota has broad impacts, including effects on colonization, resistance to pathogens, maintaining the intestinal epithelium, metabolizing dietary and pharmaceutical compounds, controlling immune function, and even behavior through the gut–brain axis.
Dysbiosis is characterized by a disruption to the microbiome resulting in an imbalance in the microbiota, changes in their functional composition and metabolic activities, or a shift in their local distribution. For example, a part of the human microbiota such as the skin flora, gut flora, or vaginal flora, can become deranged, with normally dominating species underrepresented and normally outcompeted or contained species increasing to fill the void. Similar to the human gut microbiome, diverse microbes colonize the plant rhizosphere, and dysbiosis in the rhizosphere, can negatively impact plant health. Dysbiosis is most commonly reported as a condition in the gastrointestinal tract or plant rhizosphere.
Jeffrey Ivan Gordon is a biologist and the Dr. Robert J. Glaser Distinguished University Professor and Director of the Center for Genome Sciences and Systems Biology at Washington University in St. Louis. He is internationally known for his research on gastrointestinal development and how gut microbial communities affect normal intestinal function, shape various aspects of human physiology including our nutritional status, and affect predisposition to diseases. He is a member of the National Academy of Sciences, the American Academy of Arts and Sciences, the Institute of Medicine of the National Academies, and the American Philosophical Society.
Microbiota are the range of microorganisms that may be commensal, mutualistic, or pathogenic found in and on all multicellular organisms, including plants. Microbiota include bacteria, archaea, protists, fungi, and viruses, and have been found to be crucial for immunologic, hormonal, and metabolic homeostasis of their host.
Orthogonal Signal Correction (OSC) is a spectral preprocessing technique that removes variation from a data matrix X that is orthogonal to the response matrix Y. OSC was introduced by researchers at the University of Umea in 1998 and has since found applications in domains including metabolomics.
An enterotype is a classification of living organisms based on the bacteriological composition of their gut microbiota. The discovery of three human enterotypes was announced in the April 2011 issue of Nature by Peer Bork and his associates. They found that enterotypes are not dictated by age, gender, body weight, or national divisions. There are indications that long-term diet influences enterotype. Type 1 is characterized by high levels of Bacteroides, type 2 has few Bacteroides but Prevotella are common, and type 3 has high levels of Ruminococcus.
Jens Nielsen is the CEO of BioInnovation Institute, Copenhagen, Denmark, and professor of systems biology at Chalmers University of Technology, Gothenburg, Sweden. He is also an adjunct professor at the Danish Technical University and the University of Copenhagen. Nielsen is the most cited researcher in the field of metabolic engineering, and he is the most cited researcher in Biology and Biochemistry in Sweden and Denmark. He is the only foreign member of all three academies in the US and he is also foreign member of the Chinese Academy of Engineering. He was the founding president of the International Metabolic Engineering Society. He has additionally founded several biotech companies.
The human virome is the total collection of viruses in and on the human body. Viruses in the human body may infect both human cells and other microbes such as bacteria. Some viruses cause disease, while others may be asymptomatic. Certain viruses are also integrated into the human genome as proviruses or endogenous viral elements.
The gut–brain axis is the two-way biochemical signaling that takes place between the gastrointestinal tract and the central nervous system (CNS). The term "microbiota–gut–brain axis" highlights the role of gut microbiota in these biochemical signaling. Broadly defined, the gut–brain axis includes the central nervous system, neuroendocrine system, neuroimmune systems, the hypothalamic–pituitary–adrenal axis, sympathetic and parasympathetic arms of the autonomic nervous system, the enteric nervous system, vagus nerve, and the gut microbiota.
Microbiota-accessible carbohydrates (MACs) are carbohydrates that are resistant to digestion by a host's metabolism, and are made available for gut microbes, as prebiotics, to ferment or metabolize into beneficial compounds, such as short chain fatty acids. The term, ‘‘microbiota-accessible carbohydrate’’ contributes to a conceptual framework for investigating and discussing the amount of metabolic activity that a specific food or carbohydrate can contribute to a host's microbiota.
Jeremy K. Nicholson is a professor and pro vice chancellor of Health Sciences at Murdoch University in Perth, Western Australia, where he leads the Australian National Phenome Centre. He is also an emeritus professor of Biological Chemistry at Imperial College London and was the director and principal investigator of the MRC-NIHR National Phenome Centre until 2018.
A microbiome is the community of microorganisms that can usually be found living together in any given habitat. It was defined more precisely in 1988 by Whipps et al. as "a characteristic microbial community occupying a reasonably well-defined habitat which has distinct physio-chemical properties. The term thus not only refers to the microorganisms involved but also encompasses their theatre of activity". In 2020, an international panel of experts published the outcome of their discussions on the definition of the microbiome. They proposed a definition of the microbiome based on a revival of the "compact, clear, and comprehensive description of the term" as originally provided by Whipps et al., but supplemented with two explanatory paragraphs, the first pronouncing the dynamic character of the microbiome, and the second clearly separating the term microbiota from the term microbiome.
Timothy David Spector is a British epidemiologist, medical doctor, and science writer, working on the relationship between nutrition, the gut microbiome, and health. He argues against low-fat diets and fad diets, and instead advocates for a Mediterranean-style diet that is heavily plant-based, high in fibre, limits ultra-processed foods, and includes a diversity of plants.
Gary Siuzdak is an American chemist best known for his work in the field of metabolomics, activity metabolomics, and mass spectrometry. His lab discovered indole-3-propionic acid as a gut bacteria derived metabolite in 2009. He is currently the Professor and Director of The Center for Metabolomics and Mass Spectrometry at Scripps Research in La Jolla, California. Siuzdak has also made contributions to virus analysis, viral structural dynamics, as well as developing mass spectrometry imaging technology using nanostructured surfaces. The Siuzdak lab is also responsible for creating the research tools eXtensible Computational Mass Spectrometry (XCMS), METLIN, METLIN Neutral Loss and Q-MRM. As of January 2021, the XCMS/METLIN platform has over 50,000 registered users.
Eran Elinav is an Israeli immunologist and microbiota researcher at the Weizmann Institute of Science and the DKFZ.
Lesley Hoyles is a Welsh microbiologist who is Professor of Microbiome and Systems Biology at Nottingham Trent University. She combines in vivo and in vitro microbiology and bioinformatics research to better understand how the gut microbiota influences health and disease.
Stachydrine, also known as proline betaine, is a naturally occurring alkaloid found in citrus, caper, chestnuts, alfalfa, Leonurus japonicus, Maclura tricuspidata, Stachys arvensis and Arisaema heterophyllum. It has been studied for its potential health benefits.