37 research outputs found

    Loss of m(1)acp(3)Ψ ribosomal RNA modification is a major feature of cancer

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    The ribosome is an RNA-protein complex that is essential for translation in all domains of life. The structural and catalytic core of the ribosome is its ribosomal RNA (rRNA). While mutations in ribosomal protein (RP) genes are known drivers of oncogenesis, oncogenic rRNA variants have remained elusive. We identify a cancer-specific single-nucleotide variation in 18S rRNA at nucleotide 1248.U in up to 45.9% of patients with colorectal carcinoma (CRC) and present across >22 cancer types. This is the site of a unique hyper-modified base, 1-methyl-3-α-amino-α-carboxyl-propyl pseudouridine (m(1)acp(3)Ψ), a >1-billion-years-conserved RNA modification at the peptidyl decoding site of the ribosome. A subset of CRC tumors we call hypo-m(1)acp(3)Ψ shows sub-stoichiometric m(1)acp(3)Ψ modification, unlike normal control tissues. An m(1)acp(3)Ψ knockout model and hypo-m(1)acp(3)Ψ patient tumors share a translational signature characterized by highly abundant ribosomal proteins. Thus, m(1)acp(3)Ψ-deficient rRNA forms an uncharacterized class of "onco-ribosome" which may serve as a chemotherapeutic target for treating cancer patients

    The Fairness of Gacaca

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    The elusiveness of white-collar and corporate crime in a globalized economy

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    We live in a time that is dominated by business firms operating across the globe. While globalization has created opportunities for many, it has also: increased opportunities for white?collar and corporate crime, led to the transference of social, environmental, and economic harms to jurisdictions vulnerable to this, and created serious problems for the regulation and enforcement of business behavior. This chapter discusses and illustrates these issues using three examples: the (mis)use of corporate vehicles for financial gain, transnational corporate bribery, and environmental crime in the waste industry. The chapter concludes with some of the key challenges for the future study of white?collar and corporate crime
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