Reduced expression of Scaffold/Matrix Attachment Region Binding Protein 1 (SMAR1) is associated with various cancers resulting in poor prognosis of the diseases. However, the precise underlying mechanism elucidating the loss of SMAR1 requires ongoing study. Here, we show that SMAR1 is highly downregulated during aberrant Wnt3a signaling due to proteasomal degradation and predicted poor prognosis of colorectal cancer. However, substitution mutation (Arginine and Lysine to Alanine) in the D-box elements of SMAR1 viz. “RCHL” and “RQRL” completely abrogated its proteasomal degradation despite Wnt3a activity. SMAR1 inhibited Wnt/β-catenin signaling by recruiting Histone deacetylase-5 to β-catenin promoter resulting in reduced cell migration and invasion. Consequently, reduced tumor sizes in in-vivo NOD-SCID mice were observed that strongly associated with suppression of β-catenin. However, loss of SMAR1 led to enriched H3K9 Acetylation in the β-catenin promoter that further increased Wnt/β-catenin signaling activities and enhanced colorectal cancer progression drastically. Using docking and isothermal titration calorimetric studies we show that small microbial peptides viz. AT-01C and AT-01D derived from Mycobacterium tuberculosis mask the D-box elements of SMAR1. These peptides stabilized SMAR1 expression that further inhibited metastatic SW480 colorectal cancer cell migration and invasion. Drastically reduced subcutaneous tumors were observed in in-vivo NOD-SCID mice upon administration of these peptides (25 mg/kg body weight) intraperitoneally. Taken together our structural studies, in-vitro and in-vivo results strongly suggest that the D-box elements of SMAR1 represent novel druggable targets, where the microbial peptides hold promise as novel colorectal cancer therapeutics.

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This paper discusses how the United States biopharmaceutical market has been affected by recent changes in patent law resulting from United States legislations (Biologics Price Competition and Innovation Act and the Leahy-Smith America Invents Act) and Supreme Court precedents (Mayo Collaborative Services v. Prometheus Laboratories, Inc. and Molecular Pathology v. Myriad Genetics). The authors interviewed eight key opinion leaders from the United States knowledgeable in biopharmaceuticals, including industry veterans, patent counsel, senior scientists and jurists. This paper summarizes the opinions of the key opinion leaders. This paper explains the impact of these Supreme Court decisions - i.e., broadening the exceptions to patent eligibility for law of nature and natural phenomenon - on biopharmaceutical innovations and provides future perspectives.

Commentary on the relationship between the Convention on Biological Diversity and the WTO Agreement on Trade Related Aspects of Intellectual Property Rights.

On February 19, 2013, the U.S. Supreme Court heard oral argument in Bowman v. Monsanto – the first case to directly present the question of how the Exhaustion Doctrine should apply to patents relating to biotechnology and digital technology inventions.  The Petitioner, Vernon Hugh Bowman, asserts that the Exhaustion Doctrine should be extended to advanced agricultural technologies where the technology itself is contained in genetically modified seeds that may be reproduced through successive generations of seeds without limitation, and that companies like Monsanto can instead rely on remedies found in contract law to protect its commercial interests.  The Respondent, Monsanto Corporation, supported by the U.S. Government, (not surprisingly) disagrees, contending that an extension of the Exhaustion Doctrine of this magnitude would undercut effective patent protection for inventions that may reproduce perfectly over generations, undermining R&D in innovative technologies.  During the Bowman v. Monsanto oral argument on February 19th, the Justices focused on the broad scope of the exception sought by the Petitioner to patent rights for GM seed as an extension of the Exhaustion Doctrine to biotechnology and digital technology inventions, and did not appear persuaded either that the only reasonable use of the soybeans by Bowman was to plant them or that right holders would find effective modes of protection through contract law.  The Justices noted that this was the first case to present the intersection of the Exhaustion Doctrine and effective protection for inventions that may be reproduced across generations – that intersection to be the issue of greatest interest to the Court in  Bowman v. Monsanto, where the Court may be unlikely to create a sweeping exception to patent rights for biotechnology or digital technology inventions that has not been contemplated by the Congress.