This exploratory study examined the experiences, expectancy value, academic identity, sense of impostorism, and social networks of graduate students in a large convergence science research center established with the goal of increasing phosphorus sustainability. There were two components to the study: a survey that explored expectancy value factors pre and post to the academic year and a social network analysis to examine student social networks pre and post to the academic year. Participants included 25 students in the treatment group (who participated in convergence research), and 28 students in a control group (who participated in traditional research). The social network analyses showed the convergence research students moved into more integrated social networks with increased connections to faculty and students across different Center institutions. The results of the survey found there was a drop in overall expectancy value scores for graduate research for the treatment group students. The survey results showed no significant differences in the treatment and control group students for impostorism on the survey. Students in both groups reported there were times when they felt unprepared for the classes; however, the treatment group students were more likely to describe having to take classes or study topics that were outside of their discipline and experienced difficulties with their research.

Agriculture will face many challenges in the next 25 years, including water, population demands, supply chain disruptions, storage, safety, and distribution. Whether discussing smart farming, genetically modified seeds, or alternatives to traditional productivity enhancements, such as insecticides, herbicides, fungicides, and fertilizers, it is all about increasing resiliency by broadening the options for the industry. One of the platform technologies that may offer solace could be nanotechnology especially given the temporal variables involved. We may need to act quickly, so we must prepare to do so. In addition, we must not avoid viable solutions while searching for the silver bullet. There may be none. The following gleans expert opinions from the different stakeholder communities in nanotechnology and agriculture disciplines. Our approach involved diverse sampling and analysis in producing a modicum of information to help inform debates over nanotechnology and agriculture. Put simply; these are observations and suggestions for those who participated.

Today’s challenges with sustainability are driven by complexity, lack necessary information, resist straightforward solutions, span multiple scales, and encompass diverse or sometimes conflicting perspectives. To tackle these issues effectively, research organizations need tools that support and accelerate the integration of disciplinary knowledge across both natural and social sciences so that they can explore and execute workable solutions. Boundary objects are tools that can bring diverse perspectives together through a shared point of focus that is meaningful across different groups and perspectives, enhancing communication between them. Here, we introduce a framework to develop Triple Bottom Line Scenario Sites (TBL Sites) as “convergence” boundary objects and intervention testbeds to support a holistic approach to sustainability research within multidisciplinary and multi-institutional organizations. We describe four key criteria used to identify a potential TBL Site: (1) proximity to researchers, (2) a bounded geographic location encompassing a particular ecosystem, (3) an integrated stakeholder network, and (4) access to existing resources. We explain how TBL Sites may be used to assess research impacts on environmental, economic, and social sustainability goals. Finally, we provide examples of aquatic, agricultural, and urban TBL Sites used by the Science and Technologies for Phosphorus Sustainability (STEPS) Center, demonstrating how these boundary objects facilitate convergence across a large multidisciplinary research team to tackle sustainable phosphorus management.

One of society’s most pressing challenges in the twenty-first century is that of climate change. In fact, climate change is seen as the most defining issue of our time as we are witness to an anthropogenic perturbation in geology and earth sciences of global scale. To move forward in this new era, solutions will be sought to both mitigate the effects of climate change (e.g., reduce greenhouse gasses) as well as adapt and build resilience (e.g., improve infrastructure and agriculture to resist damage from extreme weather or floods). The immediacy of the needed solutions dictates that the response must use the full force of society’s current knowledge base, science, technology, and innovation. Nanotechnology, an enabling technology that has matured over the past few decades and now considered for general-purpose and mass use, is ideal for addressing climate change and its impacts. To position nanotechnology to address such complex challenges, this Perspective integrates collective insights from a broad range of viewpoints and presents recommendations for how research can be motivated and scoped, organized, and implemented to achieve beneficial outcomes and innovations in the most efficient ways. While this Perspective was created with a focus on the research landscape within the United States, the findings are also relevant in other international contexts. Research that can effectively advance nanotechnology solutions will be use-inspired basic research, incorporate systems-level thinking, apply a convergence research approach, engage stakeholders, and require advanced nanotechnology infrastructure. By illuminating this compelling and complex research topic, this Perspective aims to direct, inform, and accelerate needed actions in the research community to advance nanotechnology solutions for addressing climate change.

Historically, market regulation has played an important role in shaping the trajectory of scientific and technological innovation in food and agriculture. However, regulators’ traditional focus on safety and efficacy may be insufficient to address more complex ethical, legal, and social implications (ELSI) of novel products, such as the use of nanotechnology and nanomaterials in food and agriculture (nano-agrifoods). One solution might be to implement the principles of responsible innovation (RI) to challenge innovators and policymakers to better anticipate risks further upstream and be responsive to societal desires and concerns, although substantial barriers to implementation persist. This paper presents stakeholder views on the relationship between regulation and RI in nano-agrifoods based on a broader U.S. stakeholder engagement study conducted in the fall of 2020. We found that participants raised key issues that incorporated all 4 pillars of RI (anticipation, inclusion, reflexivity, responsiveness). We also found that participants’ attitudes about the relationship between regulation and innovation informed their recommendations about the relationship between regulation and RI. These attitudes are represented in a spectrum of views, ranging from “regulation as barrier” to “regulation as driver” of innovation. We further identified implications for how each attitude might be used to operationalize RI in regulatory systems. Overall, these results suggest that just as regulation drove key innovations in the twentieth century, regulation may still have a role to play in helping to promote RI of nano-agrifoods in the twenty-first.

Stakeholder engagement is an important component in developing policies on critical issues such as the use and development of novel methods and technologies, including biotechnologies and nanotechnologies. Understanding the perspectives, needs, and concerns of stakeholder groups can facilitate the development of transparent and trusted policy recommendations. Innovative online research platforms have been developed as alternatives to typical stakeholder engagement methods such as in-person focus groups, interviews, and online and paper surveys. These platforms facilitate the engagement of geographically and linguistically (i.e., individuals who speak different languages) diverse stakeholders using a wide range of methods, from virtual focus groups to surveys. Stakeholders can participate at their own leisure and anonymously, which can facilitate more open interactions on issues where viewpoints may differ. In this work, we used an online stakeholder engagement platform (OSEP) to engage stakeholders and capture their perceptions and views about the application of nanotechnology in food and agriculture (nano-agrifood) and the role of responsible innovation in the development of nano-agrifood products. The OSEP provided a reliable and interactive environment for stakeholders to share their views and exchange ideas. Such OSEPs should be further explored as novel tools for engaging stakeholders on a range of issues from emerging technologies to public health.

ADVERTISEMENT RETURN TO ISSUEViewpointNEXTHazardous Spills at Retired Fertilizer Manufacturing Plants Will Continue to Occur in the Absence of Scientific Innovation and Regulatory EnforcementNatalie G. Nelson*Natalie G. NelsonBiological and Agricultural Engineering, North Carolina State University, Raleigh 27695, North Carolina, United StatesCenter for Geospatial Analytics, North Carolina State University, Raleigh 27695, North Carolina, United States*Phone: 919-515-6741; email: [email protected]More by Natalie G. NelsonView Biographyhttps://orcid.org/0000-0002-3258-7622, Maude L. CuchiaraMaude L. CuchiaraMaterials Science and Engineering, North Carolina State University, Raleigh 27695, North Carolina, United StatesMore by Maude L. Cuchiarahttps://orcid.org/0000-0001-8493-6620, Christine Ogilvie HendrenChristine Ogilvie HendrenResearch Institute for Environment, Energy and Economics, Appalachian State University, Boone 28608-2067, North Carolina, United StatesGeological and Environmental Science, Appalachian State University, Boone 28608-2067, North Carolina, United StatesMore by Christine Ogilvie Hendrenhttps://orcid.org/0000-0002-9546-6545, Jacob L. JonesJacob L. JonesMaterials Science and Engineering, North Carolina State University, Raleigh 27695, North Carolina, United StatesMore by Jacob L. Joneshttps://orcid.org/0000-0002-9182-0957, and Anna-Maria MarshallAnna-Maria MarshallSociology, University of Illinois Urbana−Champaign, Urbana 61801, United StatesMore by Anna-Maria MarshallCite this: Environ. Sci. Technol. 2021, 55, 24, 16267–16269Publication Date (Web):November 29, 2021Publication History Received6 August 2021Published online29 November 2021Published inissue 21 December 2021https://pubs.acs.org/doi/10.1021/acs.est.1c05311https://doi.org/10.1021/acs.est.1c05311article-commentaryACS PublicationsCopyright © 2021 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0. License Summary*You are free to share (copy and redistribute) this article in any medium or format and to adapt (remix, transform, and build upon) the material for any purpose, even commercially within the parameters below:Creative Commons (CC): This is a Creative Commons license.Attribution (BY): Credit must be given to the creator.View full license*DisclaimerThis summary highlights only some of the key features and terms of the actual license. It is not a license and has no legal value. Carefully review the actual license before using these materials. This publication is Open Access under the license indicated. Learn MoreArticle Views2392Altmetric-Citations4LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail PDF (2 MB) Get e-AlertscloseSUBJECTS:Byproducts,Manufacturing,Phosphorus,Separation science,Wastewater Get e-Alerts

To date, there has been little published work that has elicited diverse stakeholder views of nano-agrifoods and of how nano-agrifoods align with the goals of responsible innovation. This paper aims to fill this research gap by investigating views of nano-agrifoods, how well their development adheres to principles of responsible innovation, and potential challenges for achieving responsible nano-agrifood innovation. Using an online engagement platform, we find that U.S. stakeholder views of responsible innovation were dominated by environmental, health, and safety (EHS) contexts, considerations of societal impacts, opportunities for stakeholder engagement, and responding to societal needs. These views overlap with scholarly definitions of responsible innovation, albeit stakeholders were more focused on impacts of products, while the field of responsible innovation strives for more "upstream" considerations of the process of innovation. We also find that views of nano-agrifoods differed across applications with dietary supplements and improved whitening of infant formula viewed least favorably, and environmental health or food safety applications viewed most favorably. These findings align with the larger body of literature, whereby stakeholders are expected to be more supportive of nanotechnology used in agricultural applications compared to directly within food and food supplements. Overall, participants indicated they held relatively neutral views on research and innovation for nano-agrifoods being conducted responsibly, and they identified key challenges to ensuring their responsible innovation that were related to uncertainties in EHS studies, the need for public understanding and acceptance, and adequate regulation. In light of these results, we recommend future research efforts on EHS impacts and risk-benefit frameworks for nano-agrifoods, better understanding stakeholder views on what constitutes effective regulation, and addressing challenges with effective regulation and responsible innovation practices.

The field of engineered nanomaterial (ENM) risk analysis has matured significantly in the past decade. While there is a suite of new, emerging tools to evaluate ENM risks and make decisions regarding these risks, there has not yet been thorough testing of these tools. This analysis applies and tests three risk screening tools (NanoRiskCat, LICARA nanoSCAN, NanoGRID) using a common case study focused on ENMs designed for water treatment technologies, compares results generated, and highlights key lessons learned and best practices for stakeholders involved in developing and/or applying ENM risk screening tools. NanoRiskCat was found to be most useful for providing a visual aid to characterize the potential exposure and health impact profiles of the ENMs, while LICARA nanoSCAN was most useful for providing guidance on proceeding with ENM-enabled innovations. NanoGRID was helpful for characterizing data on potential ENM exposure and hazards and providing detailed guidance for subsequent laboratory-based testing. At the same time, several key challenges were identified during tool application and testing phases, ranging from minor inconveniences to more complex, foundational issues. Key lessons learned and potential best practices gleaned from this analysis include: i) risk screening tools can be used together in a complementary manner; ii) risk managers and other users should be clear on the selection of underlying data and impacts on results; iii) multidisciplinary teams are essential for tool completion; and iv) continued testing and validation of emerging risk analysis tools for ENMs is a continued research need.

Gene therapy approaches have been difficult to implement due to pre-existing immunity against the virus used for delivery. To circumvent this problem, a cell-based approach was developed that avoided the use of free virus within the animal. However, even cells transduced in vitro with E1- to E3-deleted adenovirus encoding bone morphogenetic protein 2 (AdBMP2) resulted in the production of virus-neutralizing antibodies in mice. Furthermore, when mice received an intramuscular injection of nonencoding adenovirus (AdEmpty)-transduced cells, AdBMP2-transduced cells were unable to launch bone formation when an intramuscular injection of these BMP2-producing cells was delivered 1 week later. This phenomenon was not observed in NOD/SCID mice, and could be overcome in C57BL/6 mice by encapsulating the adenovirus-transduced cells in a nondegradable hydrogel poly(ethylene glycol) diacrylate (PEGDA). Data collectively suggest that PEGDA hydrogel encapsulation of AdBMP2-transduced cells prevents pre-existing immunity from suppressing BMP2-induced bone formation.

Regenerative medicine and stem cell research are exciting new fields. But as the fields progress toward clinical therapies, controversies emerge. Hype surrounding stem cell research has caused an increase in their use in interventions that are not clinically proven. Furthermore, the regulatory agencies have a lot of difficulty dealing with cell therapies, which are distinctly different from drugs and medical devices they more commonly approve. To move the field forward, advocates, regulators and scientists need to come together to find new options for stem cell research oversight that protects both the patients and the research field.

Hematopoietic stem cells (HSCs) have been used therapeutically for decades, yet their widespread clinical use is hampered by the inability to expand HSCs successfully in vitro. In culture, HSCs rapidly differentiate and lose their ability to self-renew. We hypothesize that by mimicking aspects of the bone marrow microenvironment in vitro we can better control the expansion and differentiation of these cells. In this work, derivatives of poly(ethylene glycol) diacrylate hydrogels were used as a culture substrate for hematopoietic stem and progenitor cell (HSPC) populations. Key HSC cytokines, stem cell factor (SCF) and interferon-γ (IFNγ), as well as the cell adhesion ligands RGDS and connecting segment 1 were covalently immobilized onto the surface of the hydrogels. With the use of SCF and IFNγ, we observed significant expansion of HSPCs, ∼97 and ∼104 fold respectively, while maintaining c-kit(+) lin(-) and c-kit(+) Sca1(+) lin(-) (KSL) populations and the ability to form multilineage colonies after 14 days. HSPCs were also encapsulated within degradable poly(ethylene glycol) hydrogels for three-dimensional culture. After expansion in hydrogels, ∼60% of cells were c-kit(+), demonstrating no loss in the proportion of these cells over the 14 day culture period, and ∼50% of colonies formed were multilineage, indicating that the cells retained their differentiation potential. The ability to tailor and use this system to support HSC growth could have implications on the future use of HSCs and other blood cell types in a clinical setting.

The development of advanced scaffolds that recapitulate the anisotropic mechanical behavior and biological functions of the extracellular matrix in leaflets would be transformative for heart valve tissue engineering. In this study, anisotropic mechanical properties were established in poly(ethylene glycol) (PEG) hydrogels by crosslinking stripes of 3.4 kDa PEG diacrylate (PEGDA) within 20 kDa PEGDA base hydrogels using a photolithographic patterning method. Varying the stripe width and spacing resulted in a tensile elastic modulus parallel to the stripes that was 4.1-6.8 times greater than that in the perpendicular direction, comparable to the degree of anisotropy between the circumferential and radial orientations in native valve leaflets. Biomimetic PEG-peptide hydrogels were prepared by tethering the cell-adhesive peptide RGDS and incorporating the collagenase-degradable peptide PQ (GGGPQG↓IWGQGK) into the polymer network. The specific amounts of RGDS and PEG-PQ within the resulting hydrogels influenced the elongation, de novo extracellular matrix deposition and hydrogel degradation behavior of encapsulated valvular interstitial cells (VICs). In addition, the morphology and activation of VICs grown atop PEG hydrogels could be modulated by controlling the concentration or micro-patterning profile of PEG-RGDS. These results are promising for the fabrication of PEG-based hydrogels using anatomically and biologically inspired scaffold design features for heart valve tissue engineering.

Regenerative medicine and stem cell research are exciting new fields. But as the fields progress toward clinical therapies, controversies emerge. Hype surrounding stem cell research has caused an increase in their use in interventions that are not clinically proven. Furthermore, the regulatory agencies have a lot of difficulty dealing with cell therapies, which are distinctly different from drugs and medical devices they more commonly approve. To move the field forward, advocates, regulators and scientists need to come together to find new options for stem cell research oversight that protects both the patients and the research field.

From professionals to weekend warriors, many athletes seek unproven stem cell (SC) treatments in an effort to heal injuries nonsurgically and/or to accelerate recovery times after surgery. Among the elite athletes opting for these treatments are high-profile U.S. National Football League (NFL) players. Over the past 5 years, several NFL players have publicly advocated for SC types of treatments and credit them as a major reason they could continue their careers after injuries. In this article, we describe the current problems associated with unproven SC treatments, focusing on treatments without U.S. Food and Drug Administration approval undertaken by NFL players in the past 5 years. Specifically, we highlight the types of treatments obtained and how the clinics advertise specifically to athletes. We also review the intended and unintended consequences of high-profile players receiving and advocating for these types of therapies. Our findings suggest that NFL players increasingly seek out unproven SC therapies to help accelerate recoveries from injuries. While most seem to receive treatment within the United States, several have traveled abroad for therapies unavailable domestically.

In June 2013, the US Supreme Court ruled that naturally occurring genes were unpatentable in the case Association for Molecular Pathology v. Myriad Genetics. Up until this decision, Myriad Genetics was the only company in the USA that could legally conduct diagnostic testing for BRCA1 and 2, genes that are linked to familial breast and ovarian cancer. The court case and rulings garnered discussion in public about patenting biological materials. This paper will describe the progression of the Myriad Genetics case, similar US rulings and biological intellectual property policies. In addition, it will discuss the impact of the case on biological patents - specifically those for human embryonic stem cells.

This protocol describes the techniques to synthesize and fabricate micropatterned poly(ethylene glycol) diacrylate-based hydrogels that can be used as substrates in cellular studies and tissue engineering scaffolds. These materials provide an essentially bioinert background material due to the very low protein adsorption characteristics of poly(ethylene glycol), but the materials can be modified with covalently grafted peptides, proteins, or other biomolecules of interest to impart specific biofunctionality to the material. Further, it is possible to use micropatterning technologies to control the localization of such covalent grafting of biomolecules to the hydrogel materials, thus spatially controlling the cell-material interactions. This protocol presents a relatively simple approach for mask-based photolithographic patterning, generally best suited for patterning the surface of hydrogel materials for 2D cell studies. A more sophisticated technique, two-photon laser scanning lithography, is also presented. This technique allows free-form, 3D micropatterning in hydrogels.

The recapitulation of the material properties and structure of the native aortic valve leaflet, specifically its anisotropy and laminate structure, is a major design goal for scaffolds for heart valve tissue engineering. Poly(ethylene glycol) (PEG) hydrogels are attractive scaffolds for this purpose as they are biocompatible, can be modified for their mechanical and biofunctional properties, and can be laminated. This study investigated augmenting PEG hydrogels with polycaprolactone (PCL) as an analog to the fibrosa to improve strength and introduce anisotropic mechanical behavior. However, due to its hydrophobicity, PCL must be modified prior to embedding within PEG hydrogels. In this study, PCL was electrospun (ePCL) and modified in three different ways, by protein adsorption (pPCL), alkali digestion (hPCL), and acrylation (aPCL). Modified PCL of all types maintained the anisotropic elastic moduli and yield strain of unmodified anisotropic ePCL. Composites of PEG and PCL (PPCs) maintained anisotropic elastic moduli, but aPCL and pPCL had isotropic yield strains. Overall, PPCs of all modifications had elastic moduli of 3.79 +/- 0.90 MPa and 0.46 +/- 0.21 MPa in the parallel and perpendicular directions, respectively. Valvular interstitial cells seeded atop anisotropic aPCL displayed an actin distribution aligned in the direction of the underlying fibers. The resulting scaffold combines the biocompatibility and tunable fabrication of PEG with the strength and anisotropy of ePCL to form a foundation for future engineered valve scaffolds.

In 2011, courts in both the United States and European Union handed down decisions related to human embryonic stem cell (hESC) research. In both cases, the definition of research was challenged – but the two courts reached different opinions. In the US case, Sherley v. Sebelius, research was defined as a specific project. The US District Court of Appeals did not link research utilizing existing hESC lines to the act of destroying a human embryo in order to create the line, which is not eligible for federal funding. In contrast, the Court of Justice of the European Union in the Brüstle v. Greenpeace case determined inventions related to hESCs were unpatentable since they resulted from research that involved the destruction of human embryos. In this article, we will compare and contrast these two court cases, the politics related to the rulings, and their impacts. We find that these cases significantly impacted current research and have the potential to negatively impact future stem cell research and development. However, the long-term effects of the cases remain to be seen, and there is a chance that these cases could actually strengthen this area of science. Ultimately, we feel that stem cell polices must be straightforward and supported by the public to prevent courts and judges from making decisions on science, which are disruptive to the progression of research.

We have performed an original aortic valve reconstruction using autologous pericardium. The feasibility for patients aged less than 60 years is reviewed.From April 2007 to April 2013, aortic valve reconstruction was performed in 108 patients aged less than 60 years. A total of 51 patients had aortic stenosis, 7 patients had annuloaortic ectasia, 7 patients had infective endocarditis, and 43 patients had aortic regurgitation. Fifty-seven patients had bicuspid valves, and 11 patients had unicuspid valves. There were 75 male and 33 female patients, with a mean age of 47.8 ± 11.2 years. Preoperative echocardiography showed an average peak pressure gradient of 86.1 ± 35.1 mm Hg with aortic stenosis. The surgical procedure is based on the independent tricuspid replacement using autologous pericardium. First, the distance between the commissures is measured using an original sizing apparatus, and then the pericardial cusp is trimmed using an original template and sutured to the annulus.There was no conversion to prosthetic valve replacement. There were no in-hospital mortalities. Postoperative echocardiography showed an average peak pressure gradient of 14.8 ± 7.8 mm Hg 1 week after surgery and 12.8 ± 3.1 mm Hg 4 years after surgery. One patient required reoperation because of infective endocarditis. The other 107 patients showed less than mild aortic regurgitation. No thromboembolic events were recorded. The mean follow-up period was 34.2 ± 15.7 months. Freedom from reoperation was 98.9% with 76 months of follow-up.Original aortic valve reconstruction was feasible for patients aged less than 60 years. Long-term data will be disclosed in the future.