14 research outputs found
A conceptual framework to safeguard the neuroright to personal autonomy
In this article, we propose a philosophical exploration on the main problems involved in two neurorights that concern autonomous action, namely free will and cognitive liberty, and sketch a possible solution to these problems by resourcing to a holistic interpretation of human actions. First, we expose the main conceptual and practical issues arising from the neuroright to free will, which are far from minor: the term itself is denied by some trends participating in the neurorights debate, the related concept of ultimate control is also disputed, the understanding of free will depends on cultural context, and the exercise of being free to act in several domains may be covered by other regulations. Second, we analyze the historical origin of cognitive liberty, its current status, and its relation with free will. Third, we criticize the concept of decision in mainstream action theory and propose to conceive action as a unified process constituted by three explanatory, non-sequential dimensions: intention, decision, and action realization. Fourth, we discuss two possible cases involving neurotechnologies and suggest ways to interpret them according to a unified framework in which free will and cognitive liberty fall under a single neuroright to personal autonomy. Finally, we outline a recommendation to introduce freedom of thought and personal autonomy as complementary neurorights to protect both the internal and external dimensions of thought and action
Evolution of CRISPR-associated endonucleases as inferred from resurrected proteins
Clustered regularly interspaced short palindromic repeats (CRISPR)-associated Cas9 is an effector protein that targets invading DNA and plays a major role in the prokaryotic adaptive immune system. Although Streptococcus pyogenes CRISPR–Cas9 has been widely studied and repurposed for applications including genome editing, its origin and evolution are poorly understood. Here, we investigate the evolution of Cas9 from resurrected ancient nucleases (anCas) in extinct firmicutes species that last lived 2.6 billion years before the present. We demonstrate that these ancient forms were much more flexible in their guide RNA and protospacer-adjacent motif requirements compared with modern-day Cas9 enzymes. Furthermore, anCas portrays a gradual palaeoenzymatic adaptation from nickase to double-strand break activity, exhibits high levels of activity with both single-stranded DNA and single-stranded RNA targets and is capable of editing activity in human cells. Prediction and characterization of anCas with a resurrected protein approach uncovers an evolutionary trajectory leading to functionally flexible ancient enzymes.This work has been supported by grant nos. PID2019-109087RB-I00 (to R.P.-J.) and RTI2018-101223-B-I00 and PID2021-127644OB-I00 (to L.M.) from the Spanish Ministry of Science and Innovation. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 964764 (to R.P.-J.). The content presented in this document represents the views of the authors, and the European Commission has no liability in respect to the content. We acknowledge financial support from the Spanish Foundation for the Promotion of Research of Amyotrophic Lateral Sclerosis. A.F. acknowledges Spanish Center for Biomedical Network Research on Rare Diseases (CIBERE) intramural funds (no. ER19P5AC756/2021). F.J.M.M. acknowledges research support by Conselleria d’Educació, Investigació, Cultura i Esport from Generalitat Valenciana, research project nos. PROMETEO/2017/129 and PROMETEO/2021/057. M.M. acknowledges funding from CIBERER (grant no. ER19P5AC728/2021). The work has received funding from the Regional Government of Madrid (grant no. B2017/BMD3721 to M.A.M.-P.) and from Instituto de Salud Carlos III, cofounded with the European Regional Development Fund ‘A way to make Europe’ within the National Plans for Scientific and Technical Research and Innovation 2017–2020 and 2021–2024 (nos. PI17/1659, PI20/0429 and IMP/00009; to M.A.M.-P. B.P.K. was supported by an MGH ECOR Howard M. Goodman Award and NIH P01 HL142494
A conceptual framework to safeguard the neuroright to personal autonomy
In this article, we propose a philosophical exploration on the main problems involved in two neurorights that concern autonomous action, namely free will and cognitive liberty, and sketch a possible solution to these problems by resourcing to a holistic interpretation of human actions. First, we expose the main conceptual and practical issues arising from the neuroright to “free will,” which are far from minor: the term itself is denied by some trends participating in the neurorights debate, the related concept of ultimate control is also disputed, the understanding of free will depends on cultural context, and the exercise of being free to act in several domains may be covered by other regulations. Second, we analyze the historical origin of cognitive liberty, its current status, and its relation with free will. Third, we criticize the concept of decision in mainstream action theory and propose to conceive action as a unified process constituted by three explanatory, non-sequential dimensions: intention, decision, and action realization. Fourth, we discuss two possible cases involving neurotechnologies and suggest ways to interpret them according to a unified framework in which free will and cognitive liberty fall under a single neuroright to personal autonomy. Finally, we outline a recommendation to introduce freedom of thought and personal autonomy as complementary neurorights to protect both the internal and external dimensions of thought and action
A conceptual framework to safeguard the neuroright to personal autonomy
In this article, we propose a philosophical exploration on the main problems involved in two neurorights that concern autonomous action, namely free will and cognitive liberty, and sketch a possible solution to these problems by resourcing to a holistic interpretation of human actions. First, we expose the main conceptual and practical issues arising from the neuroright to free will, which are far from minor: the term itself is denied by some trends participating in the neurorights debate, the related concept of ultimate control is also disputed, the understanding of free will depends on cultural context, and the exercise of being free to act in several domains may be covered by other regulations. Second, we analyze the historical origin of cognitive liberty, its current status, and its relation with free will. Third, we criticize the concept of decision in mainstream action theory and propose to conceive action as a unified process constituted by three explanatory, non-sequential dimensions: intention, decision, and action realization. Fourth, we discuss two possible cases involving neurotechnologies and suggest ways to interpret them according to a unified framework in which free will and cognitive liberty fall under a single neuroright to personal autonomy. Finally, we outline a recommendation to introduce freedom of thought and personal autonomy as complementary neurorights to protect both the internal and external dimensions of thought and action
Excursión por los alrededores de Agres. Estudio del medio físico y biótico de la Sierra de Mariola (Alicante)
In order to keep up the tradition initiated in our school by Professor Daniel Jiménez de Cisneros in 1904, we intended to initiate students into field studies, and knowledge of their natural environment. In this work we present a pool of activities related with the study of the natural environment of the Alicante Province (Spain), performed with students from first level of BA. It was conducted by teachers from the Department of Biology and Geology of the "Jorge Juan" High school (Alicante) and other centres, together with other Biologists and Geologists. Our general goal was to achieve a progressive learning and to enhance the interest of students in Science. This didactic experience started with practical as well as theoretical activities in the laboratory and in the botanical garden of our centre that lasted 25 hours distributed in seven sessions, and was completed with field studies in Mariola mountain during a period of three days.El presente trabajo ha sido financiado en parte por la A.P.A. del Instituto de Educación Secundaria Jorge Juan de Alicante, la Caja de Ahorros del Mediterráneo (CAM), y la Editorial Santillana
Observation of Fe(V)=O using variable-temperature mass spectrometry and its enzyme-like C–H and C=C oxidation reactions
Oxo-transfer chemistry mediated by iron underpins many biological processes and today is emerging as synthetically very important for the catalytic oxidation of C-H and C=C moieties that are hard to activate conventionally. Despite the vast amount of research in this area, experimental characterization of the reactive species under catalytic conditions is very limited, although a Fe(v)=O moiety was postulated. Here we show, using variable-temperature mass spectrometry, the generation of a Fe(v)=O species within a synthetic non-haem complex at -40 degrees C and its reaction with an olefin. Also, with isotopic labelling we were able both to follow oxygen-atom transfer from H(2)O(2)/H(2)O through Fe(v)=O to the products and to probe the reactivity as a function of temperature. This study pioneers the implementation of variable-temperature mass spectrometry to investigate reactive intermediates