Search Strains

Animals with mnDp31 are WT and segregate WT and dead embryos. (Animals which have lost mnDp31 arrest as embryos.)

Enhances retarded differentiation of the hypodermis and exit from the molting cycle caused by mutations in let-7 or its paralogs. Reference: Hayes GD, Frand AR, Ruvkun G. Development. 2006 Dec;133(23):4631-41.

Weakly retarded differentiation of the hypodermis and exit from the molting cycle. Reference: Hayes GD, Frand AR, Ruvkun G. Development. 2006 Dec;133(23):4631-41.

Retarded differentiation of the hypodermis and supernumerary molt that results in adult lethality. Reference: Hayes GD, Frand AR, Ruvkun G. Development. 2006 Dec;133(23):4631-41.

veIs13 [col-19::GFP + rol-6(su1006)] V. mgEx725 [lin-4::let-7 + ttx-3::RFP]. Pick RFP+ to maintain. mgEx725 rescues lethality of let-7(mn112). Precocious expression of col-19::GFP at the L4 stage. Reference: Hayes GD, Riedel CG, Ruvkun G. 2011. Genes Dev. 2011 Oct 1;25(19):2079-92.

Adults slightly Dpy. Suppresses defects caused by over-expression of mir-84. Enhances retarded heterchronic phenotypes caused by a weak allele of let-7 or loss of mir-84. Reference: Hayes GD, Riedel CG, Ruvkun G. 2011. Genes Dev. 2011 Oct 1;25(19):2079-92.

Adults slightly Dpy. Suppresses defects caused by over-expression of mir-84. Enhances retarded heterchronic phenotypes caused by a weak allele of let-7 or loss of mir-84. Reference: Hayes GD, Riedel CG, Ruvkun G. 2011. Genes Dev. 2011 Oct 1;25(19):2079-92.

Heterozygotes are Unc and segregate Uncs and dead eggs. nT1 carries a dominant Unc mutation and a recessive lethal mutation. Do not distribute this strain; other labs should request it from the CGC.

Heterozygotes are WT and segregate WT, Steriles with an Everted Vul and DpyUncs. ar113 pka evl-11(ar113). Do not distribute this strain; other labs should request it from the CGC.

Heterozygotes are WT and segregate WT, DpyUncs and Steriles which have an everted vulva. ar114 pka evl-11(ar114). Do not distribute this strain; other labs should request it from the CGC.

Heterozygotes are Unc and segregate Uncs, dead eggs, and Egl. lin-25(ar90) is a probable null mutation. Hermaphrodites are completely unable to lay eggs. Lineage defects in VPCs. Amber mutation (codon 197); amber suppressable. Do not distribute this strain; other labs should request it from the CGC.

Heterozygotes are Unc and segregate Uncs, dead eggs, and Egl. lin-25(sy29) is a non-null allele. Hermaphrodites are 100% Egl but some eggs are seen on plates. Results from a missense mutation in codon 103. Do not distribute this strain; other labs should request it from the CGC.

Heterozygotes are Unc and segregate Unc, dead eggs and lethal Twitchers. Lethal early larval (L1-L2). Maintain by picking Unc. Do not distribute this strain; other labs should request it from the CGC.

aSi8 [lox2272::Cbr-unc-119(+)::lox2272::mec-7p:: NLS::GCaMP7s::egl-13-NLS::SL2::NLS::mScarlet-I:: egl-13-NLS] II. mec-7 promoter driving nuclear-localized expression of GCaMP7f in ALM, PLM, AVM & PVM neurons. Reference: Ding J, et al. GE (Bethesda). 2023 Sep 30;13(10):jkad183. doi: 10.1093/g3journal/jkad183. PMID: 37565483.

aSi10 [lox2272 Cbr-unc-119(+) lox2272 + loxP::unc-54 3’UTR::Split 3’ HygR::tjp2a_guide::Split 3’ mScarlet-I::egl-13nls::tbb-2 3’UTR]?II. Strain contains a specialized safe harbor transgene landing pad for integration of promoters to drive mScarlet. Reference: Stevenson ZC, et al. bioRxiv 2022.10.30.514301; doi: https://doi.org/10.1101/2022.10.30.514301. Paper accepted at eLife.

aSi13 [lox2272 + loxN 3' (delta)Cbr-unc-119(+) + 3' (delta)mNeonGreen::PEST] aSi14[lox2272 + loxP 3’ (delta)HygR + 3’ (delta)mScarlet-I::PEST]?II. Unc. Strain contains a set of dual specialized safe harbor transgene landing pads for integration of promoters: one driving mScarlet and rescuing hygromycin resistance upon integration, the other driving mNeonGreen and rescuing the unc phenotype upon integration. Reference: Stevenson ZC, et al. bioRxiv 2022.10.30.514301; doi: https://doi.org/10.1101/2022.10.30.514301. Paper accepted at eLife.

aSi23 [lox2272::Cbr-unc-119(+)::lox2272::mec-7p:: NLS::GCaMP7f::egl-13-NLS::SL2::NLS::mScarlet-I:: egl-13-NLS] II. mec-7 promoter driving nuclear-localized expression of GCaMP7f in ALM, PLM, AVM & PVM neurons. Reference: Ding J, et al. GE (Bethesda). 2023 Sep 30;13(10):jkad183. doi: 10.1093/g3journal/jkad183. PMID: 37565483.

aSi26 [lox2272::Cbr-unc-119(+)::lox2272::mec-7p:: NLS::GCaMP7s::ras-2-CAAX::SL2::mScarlet-I::ras-2-CAAX] II. mec-7 promoter driving membrane-localized expression of GCaMP7f in ALM, PLM, AVM & PVM neurons. Reference: Ding J, et al. GE (Bethesda). 2023 Sep 30;13(10):jkad183. doi: 10.1093/g3journal/jkad183. PMID: 37565483.

aSi31 [lox2272::Cbr-unc-119(+)::lox2272::mec-7p:: NLS::GCaMP7f::ras-2-CAAX::SL2::mScarlet-I::ras-2-CAAX] II. mec-7 promoter driving membrane-localized expression of GCaMP7f in ALM, PLM, AVM & PVM neurons. Reference: Ding J, et al. GE (Bethesda). 2023 Sep 30;13(10):jkad183. doi: 10.1093/g3journal/jkad183. PMID: 37565483.

aSi27 [lox2272::Cbr-unc-119(+)::lox2272::mec-7p::GCaMP7s::SL2::mScarlet-I] II. mec-7 promoter driving expression of GCaMP7s in ALM, PLM, AVM & PVM neurons. Reference: Ding J, et al. GE (Bethesda). 2023 Sep 30;13(10):jkad183. doi: 10.1093/g3journal/jkad183. PMID: 37565483.

aSi36 [lox2272::Cbr-unc-119(+)::lox2272::mec-7p::GCaMP7f::SL2::mScarlet-I] II. mec-7 promoter driving expression of GCaMP7f in ALM, PLM, AVM & PVM neurons. Reference: Ding J, et al. GE (Bethesda). 2023 Sep 30;13(10):jkad183. doi: 10.1093/g3journal/jkad183. PMID: 37565483.

pkIs1582 [let-858::GFP + rol-6(su1006)] V. Homozygous lethal lsm-8 deletion balanced by GFP-marked nT1 translocation. xe17 generated by CRISPR/Cas9-engineered replacement of the gene with a red pharyngeal marker. lsm-8 heterozygotes are wild-type (will roll in this case because of pkIs1582) green & red pharynx, and will segregate rolling heterozygotes (green & red pharynx), arrested nT1[qIs51] aneuploids (only green pharynx), and lsm-8 homozygotes (only red pharynx). Homozygous nT1[qIs51] inviable. Pick rollers with green & red pharynx and check for correct segregation of progeny to maintain. Reference: Mattout A, et al. Nat Cell Biol. 2020 May;22(5):579-590. PMID: 32251399

gwIs39 [baf-1::gfp-lacI::let-858 3'UTR + vit-5::GFP] III. bqSi225 [emr-1p::emr-1::mCherry + unc-119(+)] IV. gwIs59 [pha-4::mCherry::256xLacO::4xLexA + unc-119(+)]. Superficially wild-type. Express ubiquitous EMR-1::mCherry at the nuclear periphery. Expresses GFP-LacI from early embryogenesis and throughout development, which forms a small spot at the lacO array. Worms have red intestine (all stages) and green intestine (from late L4 stage). Reference: Harr JC, et al. Genes Dev. 2020 Apr 1;34(7-8):560-579. PMID: 32139421.

gwIs4 [myo-3p::RFP + baf-1::GFP-lacI:::let-858 3'UTR] X. Worms are slow growing, with reduced brood size and become sterile at elevated temperatures. Expresses GFP-LacI from early embryogenesis and throughout development, which forms a small spot at the lacO array. RFP expression in muscles. Reference: Gonzalez-Sandoval A, et al. Cell. 2015 Dec 3;163(6):1333-47. doi: 10.1016/j.cell.2015.10.066. PMID: 26607792.

gwIs39 [baf-1::gfp-lacI::let-858 3'UTR + vit-5::GFP] III. gwIs34 [myo-3::mCherry + 256xlacO + unc-119(+)] III. Superficially wild-type. Expresses GFP-LacI throughout development from early embryogenesis, forming a small spot at the lacO array. Worms have red muscle (from L1 stage) and green intestine (from late L4 stage). Reference: Meister P, et al. Genes Dev. 2010 Apr 15;24(8):766-82. PMID: 20395364

gwIs39 [baf-1::gfp-lacI::let-858 3'UTR + vit-5::GFP] III. gwIs58 [hsp-16.2p::mCherry::256xLacO::4xLexA + unc-119(+)]. Small transgene/large array. Superficially wild-type. Expresses GFP-LacI from early embryogenesis and throughout development, which forms a small spot at the lacO array. Worms have green intestine (from late L4 stage). Might still carry unc-119(ed3) in background. Reference: Rohner S, et al. J Cell Biol. 2013 Mar 4;200(5):589-604. doi: 10.1083/jcb.201207024. PMID: 23460676

gwIs39 [baf-1::gfp-lacI::let-858 3'UTR + vit-5::GFP] III. ygIs2 [baf-1::GFP::lmn-1(Y59C) + unc-119(+)]. caIs3 [pha-4::lacZ + rol-6(su1006)]. Rollers. Strain expressing low level of GFP::LMN-1 (carrying the Y59C mutation). Expresses GFP-LacI from early embryogenesis and throughout development, which forms a small spot at the lacO array. Worms have red muscle (from L1 stage) and green intestine (from late L4 stage). Reference: Mattout A, et al. Curr Biol. 2011 Oct 11;21(19):1603-14. doi: 10.1016/j.cub.2011.08.030. PMID: 21962710

gwIs39 [baf-1::gfp-lacI::let-858 3'UTR + vit-5::GFP] III. gwIs4 [baf-1p::GFP-lacI::let-858 3’UTR + myo-3p::RFP] X. Superficially wild-type. Expresses GFP-LacI throughout development from early embryogenesis, forming a large spot at the lacO array. Worms have red muscle (from L1 stage) and green intestine (from late L4 stage). Reference: Towbin BD, et al. Cell. 2012 Aug 31;150(5):934-47. PMID: 22939621

gwIs39 [baf-1::gfp-lacI::let-858 3'UTR + vit-5::GFP] III. gwIs58 [hsp-16.2p::mCherry::256xLacO::4xLexA + unc-119(+)]. Small transgene/large array. Slow growing and dumpy. Expresses GFP-LacI from early embryogenesis and throughout development, which forms a small spot at the lacO array. Worms have green intestine (from late L4 stage). Might still carry unc-119(ed3) in background. Reference: Rohner S, et al. J Cell Biol. 2013 Mar 4;200(5):589-604. doi: 10.1083/jcb.201207024. PMID: 23460676

gwIs4 [myo-3p::RFP + baf-1::GFP-lacI:::let-858 3'UTR] X. Worms are slow growing, with reduced brood size and become sterile at elevated temperatures. met-2 and set-25 mutants co-segregate with ~ 20cM distance. Expresses GFP-LacI from early embryogenesis and throughout development, which forms a small spot at the lacO array. RFP expression in muscles. Reference: Towbin BD, et al. Cell. 2012 Aug 31;150(5):934-47. PMID: 22939621

gwIs4 [myo-3p::RFP + baf-1::GFP-lacI:::let-858 3'UTR] X. [NOTE: transgene seems prone to silencing. Pick RFP+ to maintain.] Superficially wild-type. Expresses GFP-LacI from early embryogenesis and throughout development, which forms a small spot at the lacO array. RFP expression in muscles. Reference: Meister P, et al. Genes Dev. 2010 Apr 15;24(8):766-82. PMID: 20395364

gwIs39 [baf-1::gfp-lacI::let-858 3'UTR + vit-5::GFP] III. gwIs4 [baf-1p::GFP-lacI::let-858 3’UTR + myo-3p::RFP] X. Superficially wild-type. Expresses GFP-LacI throughout development from early embryogenesis, forming a large spot at the lacO array. Worms have red muscle (from L1 stage) and green intestine (from late L4 stage). Reference: Gonzalez-Sandoval A, et al. Cell. 2015 Dec 3;163(6):1333-47. PMID: 26607792

gwIs4 [myo-3p::RFP + baf-1::GFP-lacI:::let-858 3'UTR] X. Superficially wild-type. Expresses GFP-LacI from early embryogenesis and throughout development, which forms a small spot at the lacO array. Worms have red muscle (from L1 stage). Reference: Gonzalez-Sandoval A, et al. Cell. 2015 Dec 3;163(6):1333-47. doi: 10.1016/j.cell.2015.10.066. PMID: 26607792.

gwSi17 [cec?4p::cec?4::WmCherry::cec?4 3'UTR] II. gwIs4 [baf-1p::GFP-lacI::let-858 3’UTR + myo-3p::RFP] X. Worms are slow growing with reduced brood size and become sterile at elevated temperatures. Expresses GFP-LacI throughout development from early embryogenesis, forming a large spot at the lacO array. Worms have red muscle (from L1 stage). CEC-4::WmCherry is visible at the nuclear periphery in embryos and L1 stage animals. Reference: Cabianca DS, et al. Nature 2019 May;569(7758):734-739. PMID: 31118512

C41G7.1. Homozygous lethal deletion balanced by bli-4- and GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP rt248 homozygotes (larval lethal). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Dimitriadi M, et al. Proc Natl Acad Sci U S A. 2016 Jul 26;113(30):E4377-86.

Heterozygotes are WT and segregate WT, DpyUncs and Unc Steriles that are slightly Long. sb56 is a recessive zygotic suppressor of let-502(ca201) early larval lethality. Likely null of mel-11.

Dominant ts maternal-effect embryonic lethal. Embryos show extensive cytoplasmic blebbing, often accompanied by small spindles and incomplete cytokinesis. Two cell embryos divide synchronously. Embryos arrest with eight to several hundred cells. Recessive non-ts maternal-effect embryonic lethal. Null may be WT. Maintain at 15C.

sbEx136 [(pAW33.1) let-502p::GFP + rol-6(su1006)]. pAW33.1 is about 6.6 kb BamH1 fragment from K06G1 and includes the first 12 amino acids of LET-502 clones into pPD95.67/BamH1. Should be nuclear localized, but is not nuclear localized. Maintain by picking Rollers.

Heterozygotes are WT GFP+ and segregate WT GFP+, Dpy GFP+ (mIn1 homozygotes), and os33 homozygotes (GFP-, Dpy, Muv, Steriles).

osEx108 [(pAY105) let-19::GFP + rol-6(su1006)]. Rollers. Pick rollers to maintain. Reference: Yoda et al. Development (2005) vol. 132 (8) pp. 1885-93.

osEx138 [let-526::GFP + rol-6(su1006)]. Rollers. Pick rollers to maintain. GFP expression in most somatic nuclei. Reference: Shibata Y, et al. Dev Biol. 2012 Jan 15;361(2):349-57.

Heterozygous stock. Maintain strain by picking Egl heterozygous animals. xe8/xe8 homozygotes burst at the vulva. Heterozygous animals have egglaying defects (Egl). xe8 is a partial deletion of the lin-41 3'UTR eliminating ~450 nt that includes the two let-7 complementary sites (LCS) [I:9,335,206 - 9,335,654]. xe8 is a gain-of-function allele: elimination of two functionally relevant let-7 binding sites relieves repression by let-7 causing overexpression of LIN-41 in L4 stage animals. Reference: Ecsedi M, et al. Dev Cell. 2015 Feb 9;32(3):335-44. Do not distribute this strain; other labs should request it directly from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

Egg-laying (Egl) defects and subsequent internal hatching of progeny (Bagging) in > 95% of animals. xe11 is a C-to-U point mutation in each of the endogenous let-7 complementary sites, LCS1 and LCS2 [I:C9,335,211T & I:C9,335,260T]. xe11 is a weak gain-of-function allele: mutation of two functionally relevant let-7 binding sites impairs repression by let-7 causing over-expression of LIN-41 in L4 stage animals. Reference: Ecsedi M, et al. Dev Cell. 2015 Feb 9;32(3):335-44. Do not distribute this strain; other labs should request it directly from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

Superficially wild-type. CRISPR/Cas9-engineered allele adds GFP and 3xflag tag to the N-terminus of LIN-29A. Do not distribute this strain; other labs should request it directly from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects. Reference: Aeschimann F, et al., (2019). A single let-7 target to coordinate transition to adulthood. Life Science Alliance 2, e201900335. http://dx.doi.org/10.26508/lsa.201900335 )

Pick GFP+ Egl to maintain. Segregates GFP- lin-41(xe8) homozygotes (die by vulval bursting as young adults), lin-41(xe8)/lin-41(bch28[eft-3p::gfp::h2b::tbb-2 3'UTR] xe70) heterozygotes (GFP+ Egl), and lin-41(bch28[eft-3p::gfp::h2b::tbb-2 3'UTR] xe70) (GFP+ Ste Dpy). lin-41(xe8) is a deletion of let-7 binding sites in the lin-41 3'UTR. The balancer was derived from lin-41(bch28), a lin-41(0) allele in which an expression cassette that drives ubiquitous nuclear GFP from the eft-3 promoter has been inserted into the lin-41 coding sequence (Katic et al., G3 (2015) 5:1649-56). References: Katic et al., G3 (2015) 5:1649-56 for lin-41(bch28) starting allele for balancer generation. Aeschimann F, et al. (2019). A single let-7 target to coordinate transition to adulthood. Life Science Alliance 2, e201900335. for balanced line. Do not distribute this strain; other labs should request it directly from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

C.elegans rsf-1, the homologue of Drosophila dRASSF and mammalian RASSF genes (RASSF1-RASSF6), is deleted. About 14% rsf-1 mutants exhibit defects in embryonal morphogenesis and the actin disorganization. The combinatorial synthetic lethal analysis demonstrates that the lethality is enhanced to more than 80% in rsf-1 mutants with the WASP-family verprolin homologous protein complex-related gene depletions and corroborates the implication of RSF-1 in the regulation of actin cytoskeleton. In rsf-1 mutants, the structures of muscle actin are preserved, but the swimming ability is impaired. Although we could not detect the direct physical interaction of LET-60 with RSF-1, rsf-1 mutants suppress the multivulva phenotype of the active let-60 mutants, suggesting that rsf-1 genetically interacts with the Ras signaling.

jcpEx2 [ced-1p::F58G11.6(genomic)::YFP::let-858 3'UTR + unc-119(+) + myo-2::GFP]. Maintain by picking GFP+. Individuals that lost the array produce only arrested embryos with spindle orientation defects, accumulate vesicles, and problems engulfing apoptotic corpses. Reference: Nieto C, et al. J Cell Sci. 2010 Jun 15;123(Pt 12):2001-7.

jcpEx3 [ccz-1p::ccz-1(genomic)::YFP::let-858 3'UTR + unc-119(+) + pha-1(+)]. Array rescues lethality. Individuals that lost the array produce only arrested embryos with spindle orientation defects, accumulate vesicles, and problems engulfing apoptotic corpses. Reference: Nieto C, et al. J Cell Sci. 2010 Jun 15;123(Pt 12):2001-7.

bmdSi15 [loxN + eef-1A.1p::GFP(1-10)::unc-54 3? UTR + let-858 terminator + myo-2p::mCherry::3xHA::tbb-2 3? UTR + loxP] I. bmdSi15 is a CRISPR-based integration into the ttTi4348 site (I:-5.32). Somatic expression of sfGFP(1-10) driven by the eft-3 promoter. GFP11 tag inserted into endogenous lmn-1 locus via CRISPR/Cas9 insertion into parental strain DQM104. Reference: Gregory EF, et al. MicroPubl Biol. 2023 Dec 13:2023:10.17912/micropub.biology.001022. doi: 10.17912/micropub.biology.001022. eCollection 2023. PMID: 38152058.