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Testing Targeted Therapies in Cancer using Structural DNA Alteration Analysis and Patient-Derived Xenografts
Published on: July 25, 2020
A DUAL MTOR/NAD+ ACTING GEROTHERAPY
Jinmei Li1,2,3, Sandeep Kumar1, Kirill Miachin1,2
1Department of Medicine, Department of Genetics, Institute for Public Health, Washington University School of Medicine, BJC Institute of Health, 425 S. Euclid Ave., St. Louis, MO 63110, USA.
Abstract:
The geroscience hypothesis states that a therapy that prevents the underlying aging process should prevent multiple aging related diseases. The mTOR (mechanistic target of rapamycin)/insulin and NAD+ (nicotinamide adenine dinucleotide) pathways are two of the most validated aging pathways. Yet, it's largely unclear how they might talk to each other in aging. In genome-wide CRISPRa screening with a novel class of N-O-Methyl-propanamide-containing compounds we named BIOIO-1001, we identified lipid metabolism centering on SIRT3 as a point of intersection of the mTOR/insulin and NAD+ pathways. In vivo testing indicated that BIOIO-1001 reduced high fat, high sugar diet-induced metabolic derangements, inflammation, and fibrosis, each being characteristic of non-alcoholic steatohepatitis (NASH). An unbiased screen of patient datasets suggested a potential link between the anti-inflammatory and anti-fibrotic effects of BIOIO-1001 in NASH models to those in amyotrophic lateral sclerosis (ALS). Directed experiments subsequently determined that BIOIO-1001 was protective in both sporadic and familial ALS models. Both NASH and ALS have no treatments and suffer from a lack of convenient biomarkers to monitor therapeutic efficacy. A potential strength in considering BIOIO-1001 as a therapy is that the blood biomarker that it modulates, namely plasma triglycerides, can be conveniently used to screen patients for responders. More conceptually, to our knowledge BIOIO-1001 is a first therapy that fits the geroscience hypothesis by acting on multiple core aging pathways and that can alleviate multiple conditions after they have set in.
Insights
A new compound, BIOIO-1001, targets aging pathways to treat multiple diseases. It shows promise for non-alcoholic steatohepatitis (NASH) and amyotrophic lateral sclerosis (ALS), with plasma triglycerides as a potential biomarker.
Area of Science:
- Gerontology and disease research
- Molecular biology and metabolic pathways
- Neurodegenerative and liver disease research
Background:
- The geroscience hypothesis posits that targeting aging processes can prevent multiple age-related diseases.
- The mechanistic target of rapamycin (mTOR)/insulin and nicotinamide adenine dinucleotide (NAD+) pathways are key validated aging pathways, but their interaction in aging remains unclear.
- Non-alcoholic steatohepatitis (NASH) and amyotrophic lateral sclerosis (ALS) are debilitating diseases lacking effective treatments and convenient biomarkers.
Approach:
- Utilized genome-wide CRISPRa screening to identify novel compounds, leading to the discovery of N-O-Methyl-propanamide-containing compounds named BIOIO-1001.
- Identified lipid metabolism, specifically involving SIRT3, as a convergence point for mTOR/insulin and NAD+ pathways.
- Conducted in vivo testing of BIOIO-1001 in diet-induced NASH models and both sporadic and familial ALS models.
Key Points:
- BIOIO-1001 demonstrated efficacy in reducing metabolic derangements, inflammation, and fibrosis characteristic of NASH.
- The compound exhibited protective effects in both sporadic and familial models of ALS, suggesting broad therapeutic potential.
- Plasma triglycerides were identified as a potentially convenient biomarker for monitoring patient response to BIOIO-1001 therapy.
Conclusions:
- BIOIO-1001 represents a novel therapeutic approach aligning with the geroscience hypothesis by targeting multiple core aging pathways.
- This compound shows potential for alleviating multiple age-related conditions, including NASH and ALS, after onset.
- The modulation of plasma triglycerides offers a practical biomarker for patient stratification and therapeutic monitoring.
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