ABSTRACT
One of the definitions of chemical biology is that it is a scientific discipline spanning the fields of chemistry, biology, and physics; it primarily involves the application of chemical techniques, tools, analyses, and often compounds (also known as chemical probes), which are produced through synthetic chemistry, in order to study and manipulate biological systems [...].
Subject(s)
Biology , Biology/trends , Humans , ChemistryABSTRACT
The world of science is growing at an unprecedented speed with more and more scholarly papers produced each year. The scientific landscape is constantly changing as research specialties evolve, merge or become obsolete. It is difficult for researchers, research managers and the public alike to keep abreast with these changes and maintain a true and fair overview of the world of science. Such an overview is necessary to stimulate scientific progress, to maintain flexible and responsive research organizations, and to secure collaboration and knowledge exchange between different research specialties and the wider community. Although science mapping is applied to a wide range of scientific areas, examples of their practical use are sparse. This paper demonstrates how to use a topical, scientific reference maps to understand and navigate in dynamic research landscapes and how to utilize science maps to facilitate strategic thinking. In this study, the research domain of biology at Aarhus University serves as an example. All scientific papers authored by the current, permanent staff were extracted (6,830 in total). These papers were used to create a semantic cognitive map of the research field using a co-word analysis based on keywords and keyword phrases. A workflow was written in Python for easy and fast retrieval of information for topic maps (including tokens from keywords section and title) to generate intelligible research maps, and to visualize the distribution of topics (keywords), papers, journal categories, individual researchers and research groups on any scale. The resulting projections revealed new insights into the structure of the research community and made it possible to compare researchers or research groups to describe differences and similarities, to find scientific overlaps or gaps, and to understand how they relate and connect. Science mapping can be used for intended (top-down) as well as emergent (bottom-up) strategy development. The paper concludes that science maps provide alternative views of the intricate structures of science to supplement traditional bibliometric information. These insights may help strengthen strategic thinking and boost creativity and thus contribute to the progress of science.
Subject(s)
Biology/organization & administration , Science/organization & administration , Biology/trends , Cognition , Communication , Denmark , Female , Humans , Male , Programming Languages , Publications , Publishing , Research/organization & administration , Research Personnel , Science/trends , Semantics , Software , Universities , WorkflowABSTRACT
The protracted COVID 19 pandemic may indicate failures of scientific methodologies. Hoping to facilitate the evaluation and/or update of methods relevant in Biomedicine, several aspects of scientific processes are here explored. First, the background is reviewed. In particular, eight topics are analyzed: (i) the history of Higher Education models in reference to the pursuit of science and the type of student cognition pursued, (ii) whether explanatory or actionable knowledge is emphasized depending on the well- or ill-defined nature of problems, (iii) the role of complexity and dynamics, (iv) how differences between Biology and other fields influence methodologies, (v) whether theory, hypotheses or data drive scientific research, (vi) whether Biology is reducible to one or a few factors, (vii) the fact that data, to become actionable knowledge, require structuring, and (viii) the need of inter-/trans-disciplinary knowledge integration. To illustrate how these topics interact, a second section describes four temporal stages of scientific methods: conceptualization, operationalization, validation and evaluation. They refer to the transition from abstract (non-measurable) concepts (such as 'health') to the selection of concrete (measurable) operations (such as 'quantification of Ìanti-virus specific antibody titers'). Conceptualization is the process that selects concepts worth investigating, which continues as operationalization when data-producing variables viewed to reflect critical features of the concepts are chosen. Because the operations selected are not necessarily valid, informative, and may fail to solve problems, validations and evaluations are critical stages, which require inter/trans-disciplinary knowledge integration. It is suggested that data structuring can substantially improve scientific methodologies applicable in Biology, provided that other aspects here mentioned are also considered. The creation of independent bodies meant to evaluate biologically oriented scientific methods is recommended.
Subject(s)
Biology/methods , COVID-19/epidemiology , COVID-19/prevention & control , Research Design , Biology/trends , Humans , Research Design/trendsSubject(s)
Biology/standards , Biology/trends , Goals , Knowledge , Models, Biological , Research Design , Research Personnel/psychology , Creativity , Data Analysis , Data CollectionABSTRACT
Over the last few years, cryo electron microscopy has become the most important method in structural biology. While 80% of deposited maps are from single particle analysis, electron tomography has grown to become the second most important method. In particular sub-tomogram averaging has matured as a method, delivering structures between 2 and 5 Å from complexes in cells as well as in vitro complexes. While this resolution range is not standard, novel developments point toward a promising future. Here, we provide a guide for the workflow from sample to structure to gain insight into this emerging field.
Subject(s)
Biology/methods , Cryoelectron Microscopy/methods , Image Processing, Computer-Assisted/methods , Macromolecular Substances/ultrastructure , Organelles/ultrastructure , Single Molecule Imaging/methods , Animals , Biology/trends , HumansABSTRACT
Serial Endosymbiosis Theory, or SET, was conceived and developed by Lynn Margulis, to explain the greatest discontinuity in the history of life, the origin of eukaryotic cells. Some predictions of SET, namely the origin of mitochondria and chloroplasts, withstood the test of the most recent evidence from a variety of disciplines including phylogenetics, biochemistry, and cell biology. Even though some other predictions fared less well, SET remains a seminal theory in biology. In this paper, I focus on two aspects of SET. First, using the concept of "universal symbiogenesis", developed by Freeman Dyson to search for commonalities in astronomy and biology, I propose that SET can be extended beyond eukaryogenesis. The extension refers to the possibility that even prokaryotic organisms, themselves subject to the process of symbiogenesis in SET, could have emerged symbiotically. Second, I contrast a recent "viral eukaryogenesis" hypothesis, according to which the nucleus evolved from a complex DNA virus, with a view closer to SET, according to which the nucleus evolved through the interplay of the archaeal host, the eubacterial symbiont, and a non-LTR transposon, or telomerase. Viruses joined in later, through the process of viral endogenization, to shape eukaryotic chromosomes in the process of karyotype evolution. These two proposals based on SET are a testament to its longevity as a scientific theory.
Subject(s)
Astronomy/trends , Biological Evolution , Biology/trends , Origin of Life , Symbiosis/physiology , Astronomy/methods , Biology/methods , Eukaryota/physiology , Humans , PhylogenyABSTRACT
Online education has grown rapidly in recent years with many universities now offering fully online degree programs even in STEM disciplines. These programs have the potential to broaden access to STEM degrees for people with social identities currently underrepresented in STEM. Here, we ask to what extent is that potential realized in terms of student enrollment and grades for a fully online degree program. Our analysis of data from more than 10,000 course-enrollments compares student demographics and course grades in a fully online biology degree program to demographics and grades in an equivalent in-person biology degree program at the same university. We find that women, first-generation to college students and students eligible for federal Pell grants constitute a larger proportion of students in the online program compared to the in-person mode. However, the online mode of instruction is associated with lower course grades relative to the in-person mode. Moreover, African American/Black, Hispanic/Latinx, Native American, and Pacific Islander students as well as federal Pell grant eligible students earned lower grades than white students and non-Pell grant eligible students, respectively, but the grade disparities were similar among both in-person and online student groups. Finally, we find that grade disparities between men and women are larger online compared to in-person, but that for first-generation to college women, the online mode of instruction is associated with little to no grade gap compared to continuing generation women. Our findings indicate that although this online degree program broadens access for some student populations, inequities in the experience remain and need to be addressed in order for online education to achieve its inclusive mission.
Subject(s)
Biology/education , Education, Distance/trends , Universities/trends , Achievement , Adult , Biology/trends , Curriculum , Educational Status , Family Characteristics , Female , Humans , Income , Male , Poverty , Students , Young AdultABSTRACT
BACKGROUND: The founders of Hereditas envisioned that race biology would be a major subject that had social applications with utmost importance in the near future. Anthropometrics was in this context understood to be the pure and eugenics the applied science. Sweden had a long tradition in physical anthropometry. Herman Lundborg, member of the advisory board of Hereditas, united the anthropometric and eugenic approaches in a synthesis. He was the first head of the Institute for Race Biology in Sweden. The contents of Hereditas reflect the development of race biology in the Nordic countries. CONCLUSIONS: The initial enthusiasm for applied race biology did not last long. In the 1920's Hereditas carried papers on both physical anthropology and eugenics. Most paper dealt, however, with human genetics without eugenic content. Two papers, published in 1921 and 1939 show how the intellectual climate had changed from positive to negative. Finally only human genetics prevailed as the legitimate study of the human race or humankind. A belated defense of eugenics published in 1951 did not help; geneticists had abandoned anthropometrics for good around the year 1940 and eugenics about a decade later. In spite of that, eugenic legislation was amended astonishingly late, in the 1970's. The development was essentially similar in all Nordic countries.
Subject(s)
Biology , Eugenics , Anthropometry/methods , Biology/history , Biology/methods , Biology/trends , Breeding , Eugenics/history , Eugenics/methods , Eugenics/trends , Genetic Association Studies , Genetics, Population , History, 20th Century , Human Genetics , Humans , Plant Breeding , Racial Groups/genetics , Scandinavian and Nordic CountriesABSTRACT
This article is a reflection on the development of medicinal chemistry and chemical biology in Europe, and how the European Federation for Medicinal Chemistry (EFMC) helps the scientific community address its changing scope in a proactive manner. Networking, knowledge exchange and representation, as well as the acceptance and integration of novel scientific developments, are keys to a healthy and dynamic scientific community. This article also reviews some of the forces that shape the medicinal chemistry and chemical biology continuum, including cross-fertilization, digitalization, and the outsourcing of synthetic and characterization work to focus on productivity and scientific excellence.
Subject(s)
Biology , Chemistry, Pharmaceutical , International Agencies , Societies, Scientific , Biology/trends , Chemistry, Pharmaceutical/trends , Drug Development , Drug Discovery , Europe , HumansABSTRACT
All living entities are cognitive and dependent on ambiguous information. Any assessment of that imprecision is necessarily a measuring function. Individual cells measure information to sustain self-referential homeostatic equipoise (self-identity) in juxtaposition to the external environment. The validity of that information is improved by its collective assessment. The reception of cellular information obliges thermodynamic reactions that initiate a self-reinforcing work channel. This expresses as natural cellular engineering and niche constructions which become the complex interrelated tissue ecologies of holobionts. Multicellularity is collaborative cellular information management directed towards the optimization of information quality through its collective measured assessment. Biology and its evolution can now be re-framed as the continuous process of self-referential cellular measurement in the perpetual defense of individual cellular self-identities through the collective form.
Subject(s)
Biological Evolution , Cognition , Animals , Biology/trends , Cell Communication , Homeostasis , Humans , Models, Biological , ThermodynamicsSubject(s)
Betacoronavirus/physiology , Biology/trends , Coronavirus Infections/ethnology , Ethnology/trends , Pneumonia, Viral/ethnology , COVID-19 , Coronavirus Infections/epidemiology , Coronavirus Infections/virology , Ethnicity , Global Health , Humans , Pandemics , Pneumonia, Viral/epidemiology , Pneumonia, Viral/virology , SARS-CoV-2ABSTRACT
Engineered, in vitro cardiac cell and tissue systems provide test beds for the study of cardiac development, cellular disease processes, and drug responses in a dish. Much effort has focused on improving the structure and function of engineered cardiomyocytes and heart tissues. However, these parameters depend critically on signaling through the cellular microenvironment in terms of ligand composition, matrix stiffness, and substrate mechanical properties-that is, matrix micromechanobiology. To facilitate improvements to in vitro microenvironment design, we review how cardiomyocytes and their microenvironment change during development and disease in terms of integrin expression and extracellular matrix (ECM) composition. We also discuss strategies used to bind proteins to common mechanobiology platforms and describe important differences in binding strength to the substrate. Finally, we review example biomaterial approaches designed to support and probe cell-ECM interactions of cardiomyocytes in vitro, as well as open questions and challenges.
Subject(s)
Biology/methods , Myocardium/cytology , Myocytes, Cardiac/cytology , Tissue Engineering/methods , Adsorption , Animals , Biocompatible Materials , Biology/trends , Cells, Cultured , Collagen/metabolism , Dimethylpolysiloxanes/metabolism , Elastin/metabolism , Extracellular Matrix/metabolism , Fibronectins/metabolism , Humans , In Vitro Techniques , Integrins/metabolism , Laminin/metabolism , Ligands , Mice , Models, Cardiovascular , Protein Binding , Signal Transduction , Stress, MechanicalABSTRACT
Over the last 25 years, reforms in undergraduate biology education have transformed the way biology is taught at many institutions of higher education. This has been fueled in part by a burgeoning discipline-based education research community, which has advocated for evidence-based instructional practices based on findings from research. This perspective will review some of the changes to undergraduate biology education that have gained or are currently gaining momentum, becoming increasingly common in undergraduate biology classrooms. However, there are still areas in need of improvement. Although more underrepresented minority students are enrolling in and graduating from biology programs than in the past, there is a need to understand the experiences and broaden participation of other underserved groups in biology and ensure biology classroom learning environments are inclusive. Additionally, although understanding biology relies on understanding concepts from the physical sciences and mathematics, students still rarely connect the concepts they learn from other STEM disciplines to biology. Integrating concepts and practices across the STEM disciplines will be critical for biology graduates as they tackle the biological problems of the twenty-first century.
Subject(s)
Biology/education , Computational Biology/education , Mathematics/education , Biology/trends , Computational Biology/trends , Curriculum/trends , Female , Humans , Male , Minority Groups/education , Problem-Based Learning/methods , Problem-Based Learning/trends , Students , United StatesABSTRACT
We are pleased and honored to present this special issue for CBBI on the broad topic of biomedical EPR. The papers herein resulted from the most recent October 2019 EPR Workshop in Kraków that encompasses work from outstanding researchers in the field. Before describing the range of articles, we have briefly summarized the history of these workshops and the publications that resulted.
Subject(s)
Biology/trends , Electron Spin Resonance Spectroscopy/methods , Electron Spin Resonance Spectroscopy/trends , Medicine/trends , Allografts , Congresses as Topic , Humans , Mitochondria/metabolism , Neoplasms/diagnostic imaging , Nitric Oxide/metabolism , PolandABSTRACT
This paper surveys some of the important insights that molecular evolution has contributed to evolutionary medicine; they include phage therapy, cancer biology, helminth manipulation of the host immune system, quality control of gametes, and pathogen outbreaks. Molecular evolution has helped to revolutionize our understanding of cancer, of autoimmune disease, and of the origin, spread, and pathogenesis of emerging diseases, where it has suggested new therapies, illuminated mechanisms, and revealed historical processes: all have practical therapeutic implications. While much has been accomplished, much remains to be done.