TMPRSS6 dsRNA Compositions for Iron Overload Treatment
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Solution Overview
Problem
Current treatments for disorders associated with iron overload, such as thalassemias and hemochromatosis, are not always effective, and there is a need for alternative methods to manage iron levels in conditions like polycythemia vera where iron restriction is desirable.
Innovation Solution
Development of double-stranded ribonucleic acid (dsRNA) compositions that target the TMPRSS6 gene for RNA-induced silencing complex (RISC)-mediated cleavage, inhibiting TMPRSS6 expression to regulate iron homeostasis and treat associated disorders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current treatments (phlebotomy, splenectomy, iron chelation therapy, dieting) are used to manage iron overload, then iron levels can be reduced to some extent, but these treatments are not always effective and have significant complexity and side effects
Solution Approach 1:
The patent replaces mechanical/surgical treatments (phlebotomy, splenectomy) and complex pharmacological regimens with a molecular biology approach using dsRNA to target and degrade TMPRSS6 mRNA, thereby inhibiting the protease's function in a more precise and less invasive manner
Solution Approach 2:
The invention changes the fundamental mechanism of action from external iron removal or chelation to direct molecular inhibition of TMPRSS6 expression, altering the disease management approach at the genetic level for improved effectiveness and reduced treatment complexity
2Reliability
If TMPRSS6 expression is inhibited to increase hepcidin levels, then iron homeostasis is improved, but the complexity of delivering and monitoring the treatment increases
Solution Approach 1:
The dsRNA treatment leverages the body's own RNA interference mechanisms to achieve TMPRSS6 inhibition, and the resulting increased hepcidin production automatically regulates iron homeostasis without requiring external monitoring or adjustment, creating a self-regulating system
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The dsRNA compositions effectively reduce TMPRSS6 protein levels, increasing hepcidin expression, thereby decreasing iron levels and alleviating symptoms of iron overload-related disorders.
Implementation Method 1
The present invention provides iRNA compositions which affect the RNA-induced silencing complex (RISC)-mediated cleavage of RNA transcripts of a gene encoding Transmembrane protease, serine 6 (TMPRSS6)
Implementation Method 2
The dsRNA compositions effectively reduce TMPRSS6 protein levels, increasing hepcidin expression, thereby decreasing iron levels
Data Source
AI summary
The present invention relates to RNAi agents, e.g., double stranded RNA (dsRNA) agents, targeting the Transmembrane protease, serine 6 (TMPRSS6) gene. The invention also relates to methods of using such RNAi agents to inhibit expression of a TMPRSS6 gene and to methods of preventing and treating a TMPRSS6-associated disorder, e.g., a disorder associated with iron overload and/or a disorder of ineffective erythropoiesis, e.g., hereditary hemochromatosis, β-thalassemia (e.g., β-thalassemia major and β-thalassemia intermiedia), polycythemia vera, myelodysplastic syndrome, congenital dyserythropoietic anemias, pyruvate kinase deficiency, erythropoietic porphyria, Parkinson's Disease, Alzheimer's Disease or Friedreich's Ataxia.