lbp-7;rrf-3

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Genetic mutants with lbp-7, rrf-3 alterations

Names of genes are ordered alphabetically. For the order of interventions, please see the specific paper.

Temperature °C
20-25
Diet
OP50
Lifespan (days)
17.2
Lifespan comparisons
Double mutant lbp-7(RNAi);rrf-3(pk1426) has a lifespan of 17.2 days, while single mutant rrf-3(pk1426) has a lifespan of 15.0 days.
Citation
View abstract
Murphy CT et al., 2003, Genes that act downstream of DAF-16 to influence the lifespan of Caenorhabditis elegans. Nature. 424(6946):277-83 12845331 Click here to select all mutants from this PubMed ID in the graph
Abstract
Ageing is a fundamental, unsolved mystery in biology. DAF-16, a FOXO-family transcription factor, influences the rate of ageing of Caenorhabditis elegans in response to insulin/insulin-like growth factor 1 (IGF-I) signalling. Using DNA microarray analysis, we have found that DAF-16 affects expression of a set of genes during early adulthood, the time at which this pathway is known to control ageing. Here we find that many of these genes influence the ageing process. The insulin/IGF-I pathway functions cell non-autonomously to regulate lifespan, and our findings suggest that it signals other cells, at least in part, by feedback regulation of an insulin/IGF-I homologue. Furthermore, our findings suggest that the insulin/IGF-I pathway ultimately exerts its effect on lifespan by upregulating a wide variety of genes, including cellular stress-response, antimicrobial and metabolic genes, and by downregulating specific life-shortening genes.

Temperature °C
20-25
Diet
OP50
Lifespan (days)
16.3
Lifespan comparisons
Double mutant lbp-7(RNAi);rrf-3(pk1426) has a lifespan of 16.3 days, while single mutant rrf-3(pk1426) has a lifespan of 16.1 days.
Citation
View abstract
Murphy CT et al., 2003, Genes that act downstream of DAF-16 to influence the lifespan of Caenorhabditis elegans. Nature. 424(6946):277-83 12845331 Click here to select all mutants from this PubMed ID in the graph
Abstract
Ageing is a fundamental, unsolved mystery in biology. DAF-16, a FOXO-family transcription factor, influences the rate of ageing of Caenorhabditis elegans in response to insulin/insulin-like growth factor 1 (IGF-I) signalling. Using DNA microarray analysis, we have found that DAF-16 affects expression of a set of genes during early adulthood, the time at which this pathway is known to control ageing. Here we find that many of these genes influence the ageing process. The insulin/IGF-I pathway functions cell non-autonomously to regulate lifespan, and our findings suggest that it signals other cells, at least in part, by feedback regulation of an insulin/IGF-I homologue. Furthermore, our findings suggest that the insulin/IGF-I pathway ultimately exerts its effect on lifespan by upregulating a wide variety of genes, including cellular stress-response, antimicrobial and metabolic genes, and by downregulating specific life-shortening genes.

Search genes: lbp-7 rrf-3

Entrez ID
Symbol
GenAge
Wormbase ID

191701
lbp-7
View on GenAge (lbp-7)
WBGene00002259

Fatty acid-binding protein homolog 7

Locus: CELE_T22G5.2

Wormbase description: lbp-7 encodes a predicted intracellular fatty acid binding protein (iFABP) that is most similar to the vertebrate muscle and heart FABPs; by homology, LBP-7 is predicted to function as an intracellular transporter for small hydrophobic molecules such as lipids and steroid hormones; as loss of lbp-7 activity via large-scale RNAi screens does not result in any obvious abnormalities, the precise role of LBP-7 in C. elegans development and/or behavior is not yet known.

Entrez ID
Symbol
GenAge
Wormbase ID

174315
rrf-3
View on GenAge (rrf-3)
WBGene00004510

RNA-dependent RNA polymerase Family

Locus: CELE_F10B5.7

Wormbase description: rrf-3 encodes an RNA-directed RNA polymerase (RdRP) homolog that inhibits somatic RNAi, and thus promotes activity of repeated genes (e.g., multicopy transgenic arrays); the effect of RRF-3 on RNAi is opposite to that of RRF-1 (which stimulates somatic RNAi), which might arise from competition by RRF-3 with RRF-1 or EGO-1 in RNAi formation; rrf-3(allele) or rrf-3(allele2) mutants are hypersensitive to somatic RNAi, and conversely suppress the activity of an integrated rol6 (su1006) transgene.

Orthologs of lbp-7;rrf-3 in SynergyAge

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Orthologs of lbp-7 in SynergyAge

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Orthologs of rrf-3 in SynergyAge

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Species	Gene