Genetic diseases
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The DNA Dilemma: Shaping Bioethical Technologies Together | Andrea Lei | TEDxSHSID Youth
TEDx Talks· 2025-09-19 14:57
Core Technology & Impact - CRISPR gene editing technology has the power to alter DNA, presenting immense potential as a precision tool but also raising concerns about its capacity to change any aspect of the human body [3][4][5] - Brain-computer interfaces (BCI), like gene editing, are a double-edged sword, offering therapeutic uses and enhancement possibilities, but also raising concerns about accessibility and social stratification [13][14] Ethical Considerations - Gene editing raises ethical dilemmas regarding informed consent, particularly for unborn babies who cannot provide consent for permanent genetic alterations [6][7] - The distinction between therapeutic and enhancement applications of gene editing is crucial, with therapeutic interventions potentially justifiable without explicit consent, while enhancement raises ethical questions [8][9] - Socioeconomic disparities could lead to unequal access to gene editing technologies, exacerbating social stratification and creating inequities in biological enhancement [10][11][15] Proposed Solutions - A two-part system is proposed: free innovation in labs coupled with oversight from a review committee (science, business, economics) when technology is ready for market release [16] - Education for both the public and medical professionals is crucial for informed decision-making regarding the long-term implications of gene editing technologies [17][18] - Government oversight and review committees are needed to create safeguards that reflect societal values and ensure ethical principles guide decision-making [20]
Why cousin marriage is a genetic gamble | Mohammed Jakir Hosen | TEDxCOU
TEDx Talks· 2025-07-29 14:49
Core Argument - Consanguineous marriage, particularly among cousins, increases the risk of genetic disorders in offspring due to the higher probability of inheriting recessive genes [2][6] - While consanguinity is prevalent globally, it is notably higher in Arab countries and Muslim communities, with Pakistan having over 50% of marriages between cousins [10][11] - Increased awareness, premarital genetic screening, and newborn screening are crucial interventions to mitigate the risks associated with consanguineous marriages [15][16][19] Genetic Risks and Examples - Offspring of consanguineous marriages have a 25% chance of being affected by autosomal recessive diseases [6][14] - Historical examples, such as the Habsburg family, demonstrate how inbreeding can lead to serious genetic diseases and the decline of a bloodline [8] - Conditions like Meckel-Gruber syndrome, a fatal genetic disorder, are linked to consanguinity, resulting in severe fetal abnormalities and death [9] Regional Prevalence and Cultural Factors - Consanguineous marriage rates vary significantly by country, with higher rates observed in Arab and Muslim communities [10] - Cultural factors, including attraction, love, status, and wealth preservation, contribute to the practice of consanguineous marriage [11] - In Bangladesh, studies indicate consanguinity rates ranging from 4% to 10%, with higher rates in certain regions [12] Impact on Child Health - Under-five child mortality rates are significantly higher in consanguineous families compared to non-consanguineous families [13] - Miscarriage rates are also significantly elevated in consanguineous families [14] - Children from consanguineous families are approximately three times more likely to be affected by genetic diseases such as thalassemia, disability, and asthma [14] Solutions and Prevention Strategies - Premarital carrier screening is essential to identify potential genetic risks in partners and for future generations [15] - Newborn screening can help detect enzyme deficiencies or hormone imbalances early, enabling prompt intervention [16] - Public awareness campaigns are vital to educate communities about the risks associated with consanguineous marriage [16] Success Stories - Cyprus successfully reduced the incidence of thalassemia through a 25-year policy-level initiative involving screening, mandatory prenatal testing, and DNA screening [17][18] - The number of thalassemia births in Cyprus decreased from approximately 30 per year to 2-3 per year through these interventions [17][18]
What If We Could Cure Diseases On Demand | Janice Chen | TEDxPaloAltoSalon
TEDx Talks· 2025-07-14 16:51
Gene Editing Technology & Applications - CRISPR technology, inspired by the Nobel Prize-winning discovery of Jennifer Doudna and Emmanuelle Charpentier, functions as a programmable editor to repair genetic defects [5][6] - The technology utilizes a CRISPR protein and guide RNA complex to target and precisely repair problematic DNA sequences [7][8] - Ultra-compact CRISPR systems have been developed to overcome delivery challenges, particularly for tissue-specific delivery via AAV [12][13] - The first FDA-approved CRISPR therapy involves editing blood stem cells outside the body to treat sickle cell disease [14] Delivery Systems - Two primary gene delivery systems exist: Lipid Nanoparticles (LNPs) and Adeno-Associated Viruses (AAVs) [10] - LNPs act as cargo ships, carrying large CRISPR components, primarily docking in the liver [10][11] - AAVs function like drones, delivering smaller CRISPR payloads to specific cell types while minimizing immune responses [11][12] Challenges & Future Directions - Access to cells and tissue types beyond the liver remains a significant challenge for widespread CRISPR deployment [9][16] - Addressing the safety, efficacy, scalability, and accessibility of CRISPR medicines for over 5,000 known genetic diseases is crucial [16] - Advances in AI are accelerating the development of next-generation CRISPR medicines [17] - The industry envisions a future where curing genetic diseases becomes as simple as pairing an ultra-compact CRISPR system with a targeted delivery method [17][18]