743 research outputs found

    Microbiota-Derived Natural Products Targeting Cancer Stem Cells: Inside the Gut Pharma Factory

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    Cancer stem cells (CSCs) have drawn much attention as important tumour-initiating cells that may also be crucial for recurrence after chemotherapy. Although the activity of CSCs in various forms of cancer is complex and yet to be fully elucidated, opportunities for therapies targeting CSCs exist. CSCs are molecularly distinct from bulk tumour cells, so they can be targeted by exploiting their signature molecular pathways. Inhibiting stemness has the potential to reduce the risk posed by CSCs by limiting or eliminating their capacity for tumorigenesis, proliferation, metastasis, and recurrence. Here, we briefly described the role of CSCs in tumour biology, the mechanisms involved in CSC therapy resistance, and the role of the gut microbiota in cancer development and treatment, to then review and discuss the current advances in the discovery of microbiota-derived natural compounds targeting CSCs. Collectively, our overview suggests that dietary intervention, toward the production of those identified microbial metabolites capable of suppressing CSC properties, is a promising approach to support standard chemotherapy

    Business model configuration and dynamics for technology commercialization in mature markets

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    Purpose: The food industry is a well-established and complex industry. New entrants attempting to penetrate it via the commercialization of a new technological innovation could face high uncertainty and constraints. The capability to innovate through collaboration and to identify suitable strategies and innovative business models can be particularly important for bringing a technological innovation to this market. However, although the potential for these capabilities has been advocated, we still lack a complete understanding of how new ventures could support the technology commercialization process via the development of business models. Design/methodology/approach: To address this gap, this paper 1) builds a conceptual framework that knits together the different bodies of extant literature (i.e. entrepreneurship, strategy and innovation) to analyse the business model innovation processes associated with the exploitation of emerging technologies; 2) determines the suitability of the framework using data from the exploratory case study of ISIT3D - a firm which has started to exploit 3D printing in the food industry; 3) improves the initial conceptual framework with the findings that emerged in the case study. Findings: From this analysis it emerged that: 1) companies could use more than one BM at a time; hence, BM innovation processes could coexist and be run in parallel; 2) the facing of high uncertainty might lead firms to choose a closed and/or a familiar business model, while explorative strategies could be pursued with open business models; 3) significant changes in strategies during the technology commercialisation process are not necessarily reflected in a radical change in the business model and 4) firms could deliberately adopt interim strategies and BMs as means to identify the more suitable ones to reach the market. Originality/value: This case study illustrates how firms could innovate the processes of their BM development to face the uncertainties linked with the entry into a mature and highly conservative industry (food).This research work was supported by the Roma Tre Scholarship and the “Bit by bit: Capturing the value from the digital fabrication revolution” project, funded by the UK Engineering and Physical Science Research Council (EPSRC) and Economic and Social Research Council (ESRC) (Ref. EP/K039598/1)

    Alpine gullies system evolution : erosion drivers and control factors. Two examples from the western Italian Alps

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    Denudation processes affecting mountain slopes may vary according to different factors (e.g., lithology and structural setting of bedrock, climate, relief features), which may be very diverse at the local scale. Gully complex systems, characterised by morphological features similar to those developing in other climate contexts (i.e., pseudo-badlands) are also becoming common at higher altitudes and latitudes. The selected study cases of Gran Gorgia (Susa Valley) and Saint Nicolas (Aosta Valley), in the Western Italian Alps, are sites of geomorphological interest as they are specifically relevant for their scientific features. The aims of this work are (i) reconstructing the morphometric evolution of gully systems and vegetation colonisation time by means of multitemporal spatial analysis on surface morphological changes under water erosion; (ii) reconstructing in detail, through dendrogeomorphological analysis, the progressive spatial surface denudation and changes in erosion rates, by analysing trees and exposed roots and using different indicators (i.e., compression wood, traumatic resin ducts); (iii) obtaining data on successive aggradation/degradation episodes along slopes surrounding such hotspots through geopedological investigations; and (iv) identifying which control factors exert a predominant role on denudation patterns in such contexts. Multidisciplinary analyses regarding the study sites allowed for detailing of erosional history of the studied slopes detecting the prevailing drivers of their evolution. According to the results and considering the common climate and bedrock conditions, the structural background seems to have more influence on slope evolution at the Saint Nicolas site, while superficial geomorphic processes seem to be more relevant at the Gran Gorgia site. Because the sites have already been recognised as part of geoheritage by local authorities, the data obtained in the present research on their genesis, evolution, and local drivers affecting the rates of denudation (i.e., scientific relevance of the site) suggests that description of the sites for dissemination purposes should include links to the entire slope history
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