72 resultados para tissue and cell culture
Resumo:
Using Northern Ireland as a case study, this paper explores how lawyers responded to the challenges of entrenched discrimination, sustained political violence and an emerging peace process. Drawing upon the literature of the sociology of lawyering, it examines whether lawyers can or should be more than ‘paid technicians’ in such circumstances. It focuses in particular upon a number of ‘critical junctures’ in the legal history of the jurisdiction and uncouples key elements of the local legal culture which contributed to an ethos of quietism. The paper argues that the version of legal professionalism that emerged in Northern Ireland was contingent and socially constructed and, with notable exceptions, obfuscated a collective failure of moral courage. It concludes that facing the truth concerning past silence is fundamental to a properly embedded rule of law and a more grounded notion of what it means to be a lawyer in a conflict.
The Deubiquitinating Enzyme USP17 is Essential for GTPase Subcellular localization and Cell Motility
Resumo:
Deubiquitinating enzymes are now emerging as potential therapeutic targets that control many cellular processes, but few have been demonstrated to control cell motility. Here, we show that ubiquitin-specific protease 17 (USP17) is rapidly and transiently induced in response to chemokines SDF-1/CXCL12 and IL-8/CXCL8 in both primary cells and cell lines, and that its depletion completely blocks chemokine-induced cell migration and cytoskeletal rearrangements. Using live cell imaging, we demonstrate that USP17 is required for both elongated and amoeboid motility, in addition to chemotaxis. USP17 has previously been reported to disrupt Ras localization and we now find that USP17 depletion blocks chemokine-induced subcellular relocalization of GTPases Cdc42, Rac and RhoA, which are GTPases essential for cell motility. Collectively, these results demonstrate that USP17 has a critical role in cell migration and may be a useful drug target for both inflammatory and metastatic disease.
Resumo:
College students (N = 3,435) in 26 cultures reported their perceptions of age-related changes in physical, cognitive, and socioemotional areas of functioning and rated societal views of aging within their culture. There was widespread cross-cultural consensus regarding the expected direction of aging trajectories with (a) perceived declines in societal views of aging, physical attractiveness, the ability to perform everyday tasks, and new learning; (b) perceived increases in wisdom, knowledge, and received respect; and (c) perceived stability in family authority and life satisfaction. Cross-cultural variations in aging perceptions were associated with culture-level indicators of population aging, education levels, values, and national character stereotypes. These associations were stronger for societal views on aging and perceptions of socioemotional changes than for perceptions of physical and cognitive changes. A consideration of culture-level variables also suggested that previously reported differences in aging perceptions between Asian and Western countries may be related to differences in population structure.