Metabolic Pathways Library
Every article, presentation, spotlight, and news item we've tagged to Metabolic Pathways.
Showing 25–48 of 148
Mitophagy Activation Restores Retinal Defense Against Amyloid
Humanin, a mitochondria-derived peptide, activates AMPK-dependent mitophagy in retinal pigment epithelium cells, enhancing clearance of amyloid-beta-damaged mitochondria and preserving retinal function. This mechanism addresses a primary driver of age-related macular degeneration and suggests a therapeutic pathway for vision preservation in aging.
Histone Deacetylase 9 Gene Deletion Ameliorates Aging‐Related Adipose Tissue Senescence and Mitochondrial Dysfunction in Mice
HDAC9 gene deletion in mice reduces age-related fat tissue senescence and restores mitochondrial function through upregulation of thiosulfate sulfurtransferase (TST), a protein whose decline contributes to metabolic dysfunction during aging. This identifies HDAC9 as a druggable epigenetic target for preserving adipose tissue health.
Proteostatic Trade-Off Limits Lifespan, Reversible Through LET-607
LET-607, a transcription factor in C. elegans, enforces a trade-off between two protein-quality control systems—suppressing cytosolic stress response while promoting endoplasmic reticulum stress response. Removing LET-607 rebalances this allocation, enhancing cytosolic protein quality control and extending lifespan, suggesting that developmental optimization sacrifices longevity potential.
SIRT6 Gene Therapy Gains Fast-Track Patent Review for Frailty
Genflow secured expedited US patent review for SIRT6 gene variants targeting age-related muscle loss and frailty. This represents a strategic intellectual property consolidation for a gene therapy platform designed to modulate aging-related decline in muscular function.
Silencing Growth Hormone Has Strong Effects in Mouse Brains
Suppressing growth hormone signaling in adipose tissue of aged mice preserved cognitive function, reduced neuroinflammation and cellular senescence, and restored neural firing patterns to near-youthful levels. This demonstrates adipose tissue as a peripheral regulator of brain aging independent of systemic growth hormone levels.
SIRT6 from centenarians addresses fatty liver in aging
Genflow Biosciences has advanced patent protection for a SIRT6 variant derived from centenarian genetics, designed to address non-alcoholic fatty liver disease and steatohepatitis. The company's lead candidate, GF-1002, entered proof-of-concept testing in aged dogs in March 2025, representing a translational step toward clinical validation in metabolic dysfunction.
FFAR4 Activation Reverses Kidney Senescence in Aging
Omega-3 polyunsaturated fatty acids reduce cellular senescence in kidney tissue through FFAR4 receptor activation, improving filtration function and reducing fibrosis in aging and diseased kidneys. This mechanism explains why previous clinical trials showed inconsistent results and identifies a specific molecular target for renal protection.
Translation Attenuation Extends Lifespan and Protects Neurons
Atypical tetracyclines extend lifespan and protect neurons from ferroptotic damage by reducing protein synthesis through mechanisms independent of their antibiotic activity. This identifies translation attenuation as a pharmacologically targetable pathway for longevity and neuroprotection across multiple organism models.
Atrogi begins human trial for muscle-preserving weight loss
Atrogi has initiated human trials of ATR-258, an oral drug designed to preserve muscle mass during weight loss by mimicking exercise-induced metabolic effects. The approach addresses a critical gap in current obesity therapeutics: preventing muscle loss alongside fat loss, which is essential for maintaining strength, resilience, and functional independence in aging.
RORA-PRNP Axis Triggers Age-Related Cataracts via Senescence
RORA, a transcription factor, exacerbates age-related cataract by targeting the prion protein (PRNP) and triggering oxidative stress-induced senescence and apoptosis in lens epithelial cells. Inhibiting RORA or blocking the RORA-PRNP axis restores cellular resilience and may offer a therapeutic target for cataract prevention and reversal.
Immune-Evasive Insulin Cells Survive Without Suppression
Sana Biotechnology's immune-evasive cell therapy (UP421) has demonstrated survival of transplanted insulin-producing cells without immunosuppressive medication in a first-in-human study, with transplanted cells responding dynamically to glucose levels after 14 months. This approach fundamentally reframes type 1 diabetes treatment from immune suppression to immune tolerance, with potential implications for regenerative medicine across multiple organ systems.
The Adiponectin‐PP2A Pathway Confers Cognitive Benefits of Physical Exercise Against Chronic Stress‐Induced Tau Hyperphosphorylation in the Hippocampus
Physical exercise elevates circulating adiponectin, which activates PP2A phosphatase in the hippocampus to reduce pathological tau phosphorylation and restore cognitive function under chronic stress. This mechanism operates independently of adiponectin's other metabolic functions and identifies a direct molecular pathway by which exercise protects against Alzheimer's-like neuropathology.
Totus Medicines reports Phase 1a data for TOS-358
TOS-358, a selective mTOR complex 1 inhibitor, demonstrated a 50% clinical benefit rate and 75% disease control rate in Phase 1a testing, with a notably favorable safety profile compared to existing PI3K/AKT/mTOR pathway inhibitors. The compound showed efficacy in patients resistant or intolerant to standard therapies in this class, positioning it as a potential therapeutic option for advanced malignancies.
Correction to “Photobiomodulation Suppresses JNK3 by Activation of ERK/MKP7 to Attenuate AMPA Receptor Endocytosis in Alzheimer's Disease”
A correction to prior research on photobiomodulation's mechanism in Alzheimer's disease clarifies the molecular pathway by which light exposure modulates neuroinflammatory signaling. The finding reinforces the relevance of non-pharmacological interventions targeting neurodegeneration at the cellular level.
Dietary restriction in aging and longevity
Dietary restriction demonstrates geroprotective effects across species through multiple molecular pathways, though human data remains inconsistent and mechanistic understanding incomplete. This class of intervention represents a critical reference point for evaluating longevity strategies, particularly in identifying which downstream mechanisms drive aging resistance versus which reflect caloric reduction alone.
Mimio Health trial shows fasting‑mimetic delivers benefits without dieting
Mimio Health's fasting-mimetic therapy produced biomarker changes consistent with fasting physiology—including improved metabolic markers and enhanced fat metabolism—without dietary modification. The intervention was well tolerated and represents a pharmacological approach to accessing metabolic benefits traditionally associated with caloric restriction.
Fasting mimetic shows metabolic effects in trial
A randomized controlled trial of a fasting mimetic formulation in overweight older adults with elevated HbA1c showed reductions in LDL particle number, oxidized LDL, and fasting glucose over eight weeks. The compound—a blend of spermidine, nicotinamide, palmitoylethanolamide, and oleoylethanolamide—reproduced several cardiometabolic signatures associated with fasting without dietary restriction, though durability beyond the study period remains undemonstrated.
Supporting energy through menopause with NMN
NAD⁺ decline during menopause impairs mitochondrial function and energy production across multiple systems simultaneously. NMN, as a direct NAD⁺ precursor, bypasses rate-limiting steps in NAD⁺ biosynthesis to support cellular energy restoration and repair capacity.
NAD+ Restoration Targets Muscle Aging at Molecular Level
A peer-reviewed analysis of nicotinamide riboside (NR) supplementation found that 1,000 mg daily for five months was associated with approximately 2.5 years of reduction in muscle epigenetic age acceleration, measured across multiple biological clocks. The findings suggest NAD+ restoration may influence molecular aging pathways in skeletal muscle beyond simple energy production, though researchers emphasize additional work is needed to establish causation.
Restore taps into consumer NAD+ interest
NAD+ awareness has transitioned from niche biohacker circles to mainstream consumer interest, with companies like Restore positioning supplementation as a long-term cellular maintenance strategy rather than a rapid intervention. The shift reflects a maturing longevity market moving away from anti-aging hype toward evidence-informed consistency.
Kinase Dysfunction Breaks Cellular Communication Networks During Aging
Metabolic kinases—AMPK, mTOR, AKT, PDK, and PERK—coordinate communication between mitochondria, the endoplasmic reticulum, lysosomes, peroxisomes, and the Golgi apparatus. Dysregulation of these kinases during aging impairs this inter-organelle coordination, driving mitochondrial dysfunction, oxidative stress, and metabolic decline that underlie age-related disease.
Double‐Pronged NAD Preservation: Delaying Cellular Senescence and Initiating Musculoskeletal Regeneration
A combination of NMN and apigenin preserves NAD+ levels, activating SIRT3 to suppress cellular senescence and promote differentiation of muscle, bone, and cartilage precursor cells. The regimen also modulates the gut microbiota to increase production of phytosphingosine, an anti-aging metabolite, resulting in improved musculoskeletal function and exercise capacity in aged animals.
Additional Cover
NAD+ preservation through dual mechanisms—inhibiting its depletion and enhancing its synthesis—delays cellular senescence while promoting musculoskeletal regeneration. This addresses a central constraint in aging: the body's declining capacity to maintain energy production and tissue repair as NAD+ levels fall with time.
Rapamycin and the quiet work of immune repair
Low-dose rapamycin protects DNA in aging immune cells by reducing damage-induced cell death and senescence markers, suggesting mTOR inhibition preserves immune resilience through direct genoprotection rather than broad immunosuppression. This mechanistic clarity offers a more tractable regulatory and therapeutic pathway than the traditional anti-aging framing.