cit-1.2
C. elegans
Cyclin-T1.2
What the model saw
Gene: cit-1.2 Organism: Caenorhabditis elegans Known functions: Cyclin-T1.2. cyclin-dependent protein serine/threonine kinase activator activity. cyclin-dependent protein serine/threonine kinase regulator activity.
View unredacted entry
Cyclin-T1.2. cyclin-dependent protein serine/threonine kinase activator activity. cyclin-dependent protein serine/threonine kinase regulator activity.
Solver output
cit-1.2 encodes Cyclin-T1.2, a regulatory subunit that activates cyclin-dependent kinases (CDKs), most notably CDK-9 as part of the positive transcription elongation factor b (P-TEFb) complex. P-TEFb promotes RNA Pol II pause-release and transcriptional elongation, driving cell cycle progression and proliferation. In the context of aging, sustained CDK activity and cell cycle promotion are associated with reduced longevity; conversely, reduced CDK/cyclin activity is linked to lifespan extension in C. elegans through pathways converging on cell cycle arrest and stress resistance. Additionally, Cyclin T/CDK9 activity can phosphorylate and modulate transcription factors involved in growth and stress responses, potentially antagonizing DAF-16/FOXO-mediated pro-longevity transcription. The net effect of a cyclin activating CDK-driven proliferative signaling is therefore expected to be anti-longevity.
GenAge curators classify each gene's normal function as promoting (Pro-Longevity) or opposing (Anti-Longevity) longevity, based on synthesis across studies. Loss-of-function effects can vary from this depending on the manipulation.
Advisor judgment
The model predicted anti_longevity but the ground truth is pro_longevity. The model's reasoning is based on a general assumption that CDK/cyclin activity promotes proliferation and therefore reduces longevity, and that it might antagonize DAF-16/FOXO. However, in C. elegans, CDK-9/Cyclin-T (P-TEFb) activity can actually promote longevity, potentially through facilitating transcription of stress response genes or DAF-16 target genes rather than antagonizing them. The model's mechanistic reasoning is flawed — it incorrectly assumes that CDK activation is inherently anti-longevity in C. elegans, and incorrectly frames the DAF-16 relationship as antagonistic. The model also invokes cellular senescence as the mechanism class, which is not particularly relevant to C. elegans aging biology in this context. The confidence of 0.62 is moderate but still wrong.
Raw API responses
solver
{
"reasoning": "cit-1.2 encodes Cyclin-T1.2, a regulatory subunit that activates cyclin-dependent kinases (CDKs), most notably CDK-9 as part of the positive transcription elongation factor b (P-TEFb) complex. P-TEFb promotes RNA Pol II pause-release and transcriptional elongation, driving cell cycle progression and proliferation. In the context of aging, sustained CDK activity and cell cycle promotion are associated with reduced longevity; conversely, reduced CDK/cyclin activity is linked to lifespan extension in C. elegans through pathways converging on cell cycle arrest and stress resistance. Additionally, Cyclin T/CDK9 activity can phosphorylate and modulate transcription factors involved in growth and stress responses, potentially antagonizing DAF-16/FOXO-mediated pro-longevity transcription. The net effect of a cyclin activating CDK-driven proliferative signaling is therefore expected to be anti-longevity.",
"confidence": 0.62,
"key_pathways": [
"P-TEFb (CDK-9/Cyclin-T) transcriptional elongation",
"Cyclin-dependent kinase cell cycle regulation",
"DAF-16/FOXO transcriptional modulation"
],
"mechanism_class": "cellular_senescence",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model predicted anti_longevity but the ground truth is pro_longevity. The model's reasoning is based on a general assumption that CDK/cyclin activity promotes proliferation and therefore reduces longevity, and that it might antagonize DAF-16/FOXO. However, in C. elegans, CDK-9/Cyclin-T (P-TEFb) activity can actually promote longevity, potentially through facilitating transcription of stress response genes or DAF-16 target genes rather than antagonizing them. The model's mechanistic reasoning is flawed — it incorrectly assumes that CDK activation is inherently anti-longevity in C. elegans, and incorrectly frames the DAF-16 relationship as antagonistic. The model also invokes cellular senescence as the mechanism class, which is not particularly relevant to C. elegans aging biology in this context. The confidence of 0.62 is moderate but still wrong.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}