1 / 34

Repairing the aging brain: the SENS approach Aubrey D.N.J. de Grey, Ph.D.

Repairing the aging brain: the SENS approach Aubrey D.N.J. de Grey, Ph.D. Chief Science Officer, SENS Foundation aubrey@sens.org http://www.sens.org/. Structure of this talk. SENS Foundation and SENS A non-brain SENSF project Its relevance to aging of the brain

jersey
Télécharger la présentation

Repairing the aging brain: the SENS approach Aubrey D.N.J. de Grey, Ph.D.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Repairing the aging brain: the SENS approach Aubrey D.N.J. de Grey, Ph.D. Chief Science Officer, SENS Foundation aubrey@sens.org http://www.sens.org/

  2. Structure of this talk • SENS Foundation and SENS • A non-brain SENSF project • Its relevance to aging of the brain • Other SENSible brain therapies • Relevance to cryonics/uploading

  3. SENS Foundation SENS Foundation is a US-registered charity that works to develop, promote and enable widespread access to regenerative medicine solutions to the disabilities and diseases of… AGING

  4. What is… • Regenerative medicine? • Aging?

  5. What is regen med? Any intervention that seeks to restore the structure of a tissue/organ to its state before it suffered damage

  6. What is aging? Metabolism ongoingly causes “damage”. Damage eventually causes pathology.

  7. Options for intervention Gerontology Geriatrics Metabolism Damage Pathology

  8. Problem: this is metabolism

  9. Options for intervention Gerontology Maintenance Geriatrics Metabolism Damage Pathology Claim: unlike the others, the maintenance approach may achieve a big extension of human healthy lifespan quite soon.

  10. This is the damage Cell loss, cell atrophy Division-obsessed cells (cancer) Death-resistant cells Mitochondrial mutations Intracellular junk Extracellular junk Extracellular crosslinks Seven Deadly Things No new type of damage confirmed since 1982!

  11. Giving the middle-aged 30 years of extra healthy life: Robust Human Rejuvenation

  12. Giving the middle-aged 30 years of extra healthy life: Robust Human Rejuvenation What most affects the brain?

  13. Giving the middle-aged 30 years of extra healthy life: Robust Human Rejuvenation What most affects the brain?

  14. Intracellular junk in the artery Endothelial Cells Lipid-engorged Lysosome Foam Cell

  15. Bioremediation: the concept Microbes, like all life, need an ecological niche. Some get it by brawn (growing very fast)… …some by brain (living off material that others can't). Any abundant, energy-rich organic material that is hard to degrade thus provides selective pressure to evolve the machinery to degrade it. That selective pressure works. Even TNT, PCBs…

  16. Xenocatabolism: the concept Graveyards are abundant in human remains, accumulate bones (which are not energy-rich), do not accumulate oxysterols, tau etc., so, should harbour microbes that degrade them… …whose catabolic enzymes could be therapeutic

  17. Environmental decontamination in vivo

  18. 7-ketocholesterol degradation a promising start 7KC over time in enrichment cultures days Biodegradation 2008; 19(6):807-813

  19. Stable isotope labelling and LC/MS reveal 7-ketocholesterol metabolites in the culture supernatant 7-ketocholesterol M = 400, M13C = 401 Hydroxylated dione ? M = 414, M13C = 415 Dione metabolite ? M = 398, M13C = 399 Culture growing on 7-ketocholesterol Culture growing on 13C-labeled 7-ketocholesterol

  20. COX/LAMP1 co-localizes with AO Acridine Orange EGFP Merge

  21. pEGFP-COXL1 transfected cells are protected from 7KC-induced toxicity Mathieu et al., Biotechnol. Bioeng. 2012

  22. Steps to biomedical application Isolate competent strains; select by starvation. Identify the enzymes (mutagenesis, chemistry, genomics). Make lysosome-targeted transgenes; assay cell toxicity. Assay competence in vitro (more mutagenesis/selection). Construct transgenic mice; assay toxicity in vivo. Assay competence in disease mouse models. Test in humans as for lysosomal storage diseases.

  23. Intracellular junk in Alzheimer’s IEM: Calnexin Dystrophic Neurites IEM: Cat D

  24. Giving the middle-aged 30 years of extra healthy life: Robust Human Rejuvenation What most affects the brain?

  25. Extracellular junk in Alzheimer’s • What is it? • Does it matter? • Can it be eliminated? • How close are we? • How useful will that be?

  26. Giving the middle-aged 30 years of extra healthy life: Robust Human Rejuvenation What most affects the brain?

  27. Cell loss/atrophy in brain aging • What is it? • Does it matter? • Can it be eliminated? • How close are we? • How useful will that be?

  28. Relevance to cryonics • What types of revival interest us? • Can we make the brain hardier? • How? • How fast? • Why?

  29. Learn more Read the (semi-technical) book. Available at Amazon and all good book stores. Paperback is cheaper, and has an extra chapter! Visit us on the web at http://www.sens.org/ Drop us a line at foundation@sens.org

  30. SENS Foundation SENS Foundation works to develop, promote and ensure widespread access to regenerative medicine solutions to the disabilities and diseases of aging. www.sens.org aubrey@sens.org

More Related