Translating Aging

• Cell Reset Therapeutics to Extend Healthspan and Lifespan (Janine Sengstack, Junevity)

  Dr. Janine Sengstack is the Chief Scientific Officer and co-founder of Junevity, a company created in 2023 with the mission of extending health span and lifespan through what they term "Cell Reset therapeutics." The company recently secured $10 million in seed funding.In this episode, Chris and Janine explore the innovative platform Janine developed during her PhD work in Hao Li's lab at UCSF, which now forms the foundation of Junevity's therapeutic approach. They discuss how the company uses computational and experimental methods to identify transcription factors that can "reset" cells from a diseased, aged state back to a healthy state while maintaining cell identity. Janine explains how Junevity is developing siRNA therapeutics targeting these transcription factors to treat age-related diseases, with a focus on metabolic conditions and other disorders that impact longevity.The Finer Details:The development of the Reset platform during Janine's PhD work and its evolution into Junevity's therapeutic approachHow transcription factors act as "managers" in cells, regulating many other genesUsing AI and machine learning to identify the right transcription factors to target based on disease and tissue-specific dataThe validation process for siRNA therapeutic candidates in cell and animal modelsJunevity's focus on diseases with large-scale transcriptional dysregulation, including type 2 diabetes, obesity, muscle wasting diseases, and osteoarthritisThe advantages of siRNA as a therapeutic modality for targeting traditionally "undruggable" transcription factorsJunevity's business strategy and timeline, with clinical trials potentially beginning in 2026Quotes:"We tackled this high risk, high reward PhD project: we were inspired by the Yamanaka factors to say, 'Okay, let's find brand new transcription factors that we can target to take cells from a diseased, old state and bring them back to a healthy state while keeping them the same cell type, never turning them into a stem cell.'""Transcription factors: I like to think of them as managers in the cell.""We think the advent of modern AI and machine learning tools to better analyze what they regulate, plus siRNA as a really well-proven therapeutic modality, really unlocks the ability to target transcription factors and really make powerful therapeutics with them.""We're thinking about using transcriptional regulation as a way to come up with novel therapeutics to treat diseases that have a big impact on people's health span and lifespan.""We want to advance our programs towards development candidates, which basically means the drug entity, and move them forward towards clinical development as fast as possible.""I would love if we had multiple siRNA drugs on the market, ideally, or in late stages of development for a wide range of longevity-related diseases... We think that there's really huge potential here for making a big impact on a lot of different really complicated diseases."Linkshttps://www.junevity.com

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• Building the Infrastructure for Longevity Medicine: ARPA-H's PROSPR Program (Dr. Andrew Brack, Program Manager)

  Dr. Andrew Brack, Program Manager at the Advanced Research Projects Agency for Health (ARPA-H), discusses PROSPR (Proactive Solutions for Prolonging Resilience), an ambitious new program aimed at extending human healthspan. In this wide-ranging conversation, Chris and Andrew explore how PROSPR plans to accelerate the development of therapies that target aging itself by building the regulatory and scientific infrastructure needed to measure and improve health during aging. They discuss PROSPR's innovative approaches to in-home data collection, biomarker development, and clinical trial design that could compress decades-long studies into just three years.The Finer Details:The mission and structure of ARPA-H as a catalyst for healthcare innovationHow PROSPR aims to build "train tracks" for the longevity therapeutics industryThe program's novel approach to measuring health through intrinsic capacityStrategies for compressing clinical trials from decades to yearsThe economic impact of extending healthspan by just one yearPlans for first- and second-generation therapeutics targeting agingThe role of in-home health monitoring in future clinical trialsQuote: "We have this moral imperative to close the gap between the length that we are living and the number of years that we're living in good health."Links:PROSPR websiteProposers' Day registration

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• Decoding Stem Cell Rejuvenation Factors (Markus Gstöttner, CEO of Clock.bio)

  Markus Gstöttner is the CEO of Clock.bio, a company devoted to extending and improving the quality of life by reversing the harmful effects of time in our cells. In this episode, Gstöttner shares how his company is working to extend healthspan by understanding and harnessing the natural rejuvenation capabilities of stem cells. The conversation explores Clock.bio's groundbreaking approach to identifying the genes and pathways involved in cellular rejuvenation, and their vision for translating these discoveries into therapies.The Finer Details:How induced pluripotent stem cells (iPSCs) naturally resist and reverse agingClock.bio's novel platform for forcing stem cells to age and studying their spontaneous rejuvenationThe company's comprehensive genetic screen identifying over 150 rejuvenation-related genes, the Atlas of Rejuvenation FactorsStrategies for validating these discoveries and developing therapeutic applicationsThe path from discovery to clinical trials for extending human healthspan

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• Eliminating Pathogenic Cells to Treat Disease (Adam Freund & Remi Laberge, Arda Therapeutics)

  Adam Freund (CEO) and Remi Laberge (CTO) are the founders of Arda Therapeutics, a biotechnology company developing novel therapies that selectively eliminate harmful cell populations driving chronic diseases. In this episode, they discuss their innovative approach to treating conditions like idiopathic pulmonary fibrosis by identifying and removing specific cell types that cause tissue damage, rather than trying to modify cellular behavior through traditional drug approaches.The Finer Details:The concept of pathogenic cells as drivers of chronic diseaseHow single-cell RNA sequencing enables precise identification of harmful cell populationsArda's approach to developing targeted antibody therapeuticsAdvantages of cell elimination versus pathway modificationThe potential for intermittent dosing to improve patient quality of lifeFuture applications in aging and age-related diseasesQuotes: "Cells make up tissues. Tissues make up organisms... If you have the right cell at the right place, everything looks good. If you have the wrong cell at the wrong place, doing the wrong thing, the tissue will decay.""We position our strategy as an alternative to traditional pathway targeting... changing cell behavior by blocking a single node could be quite challenging.""This is game changer for the patient experience. If we're successful, our drug will be administered once a quarter, once every six months. But during that time, this patient feels like he is not a patient. He doesn't take a drug, he's not under treatment, and doesn't have the side effect of taking those drugs.""We think that cell depletion is a broadly applicable strategy across many chronic diseases, including potentially aging itself one day.""In 10 years from now... we will know precisely which cells to eliminate. Now, will we be allowed to do it in an otherwise healthy patient? That's a different type of question."

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• Precision Epigenetic Medicines to Extend Healthspan (Alex Aravanis, Moonwalk Biosciences)

  Alex Aravanis is the CEO and co-founder of Moonwalk Biosciences, a biotechnology company pioneering precision epigenetic medicines. In this episode, Chris and Alex discuss Moonwalk's innovative approach to developing a new class of medicines aimed at treating complex diseases and potentially extending human healthspan.The Finer Details:The concept of epigenetics as the "source code" for cell statesMoonwalk's technology for analyzing and modifying the epigenomeThe company's focus on cardiometabolic diseases and adiposityComparison of Moonwalk's approach to other epigenetic reprogramming strategiesPotential applications in treating obesity and metabolic disordersThe use of AI and machine learning in epigenetic researchFuture directions and challenges for Moonwalk BiosciencesQuotes:Quotes have been lightly edited for clarity."In the past, I've heard people refer to the DNA as the blueprint of biology, and I don't quite like that analogy. I think of it as more like the hardware, and the epigenome is the source code — the epigenome is responsible for the complex coordination of different genes that lead to proteins, and the temporal aspects of those so it's really how the hardware is used to make and maintain and change different cell types.""We're opening up the epigenome as a platform for drug discovery. The vast majority of the genome is not the coding regions, but it's incredibly important in controlling gene expression. So there's a lot of biology in there to inform our selection of targets, and we think that could dramatically improve both the number of interesting targets and our ability to select targets. The data that we're creating, our expertise, and our computational tools make us amongst the best in the world at using the epigenome for drug discovery."Links:Email questions, comments, and feedback to: [email protected] Aging on Twitter: @bioagepodcastBioAge website: https://bioagelabs.comBioAge Twitter: [@bioagelabs]

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