WormMine: AnatomyTerm WBbt:0005045

• Definition: Neuron class of one ring interneuron.
• Name: RIS
• Primary Identifier: WBbt:0005045
• Synonym: lineage name: ABprpappapa

1 Children

Definition	Name	Synonym	Primary Identifier
nucleus of pedigree ABprpappapa	ABprpappapa nucleus		WBbt:0002718

6 Expression Clusters

Regulated By Treatment	Description	Algorithm	Primary Identifier
	Transcripts depleted in RIS neurons comparing to in all cells.	edgeR 3.24.3, FDR < 0.01	WBPaper00058969:RIS_depleted
	Top 300 transcripts enriched in RIS according to single cell RNAseq.	Top 300 enriched transcripts were determined by log2.ratio of the tpm in the cell type vs the tpm in the other cells * the log2 of the cell.type tpm.	WBPaper00061340:RIS
	Transcripts enriched in RIS neurons comparing to in all cells.	edgeR 3.24.3, FDR < 0.01	WBPaper00058969:RIS_enriched
	Single-cell RNA-Seq cell group 144_0 expressed in neuron.	scVI 0.6.0	WBPaper00065841:144_0
	Transcripts enriched in RIS according to single cell RNAseq.	Genes that pass the Bonferroni threshold for multiple comparisons (q < 0.05) are significantly enriched.	WBPaper00061651:RIS_enriched
	Single-cell RNA-Seq cell group 146 expressed in: RIS.	CellRanger, DecontX, Monocle3, Louvain algorithm.	WBPaper00065623:146

69 Expression Patterns

• Primary Identifier: Expr4376
• Remark: Picture: Fig. 7.
• Pattern: ceGAT-1 is expressed in all of the GABA-ergic neurons. These GFP-positive neurons include the VD and DD neurons in the ventral cord, the RMED, RMEV, RMEL, RMER, AVL, and RIS neurons in the head area and the DVB neuron in the tail region. There are two additional GFP-positive neurons in the tail region. These two neurons are PVQR and PVQL. The identity of these GFP-positive neurons were confirmed by epifluorescence microscopy and by the location of the neurons as revealed by a combination of Nomarski-differential interference contrast microscopic observation and 4',6-diamidino-2-phenylindole nuclei-staining method. This expression pattern is evident from the early larva stage through the adult stage. An identical expression pattern was observed with at least 10 transgenic animals.

• Primary Identifier: Marker60
• Remark: Picture: N.A. Reporter gene fusion type not specified.
• Pattern: RIS cell fate marker.

• Primary Identifier: Marker61
• Remark: Picture: N.A.
• Pattern: RIS cell fate marker.

• Primary Identifier: Marker62
• Remark: Picture: N.A.
• Pattern: RIS cell fate marker.

• Primary Identifier: Expr12805
• Pattern: C10C6.7 expression is visible in nine cells: interneuron RIS; pharyngeal neurons M1, M2, Motor-interneuron, an unidentified pair of pharyngeal neurons and an unidentified pair of sensory neurons.

• Primary Identifier: Expr15558

• Primary Identifier: Expr9325
• Pattern: Synaptogyrin is expressed in all 26 GABAergic neurons including also RMER and most though not all other neurons. Synaptogyrin is absent in amphids and phasmids and can be detected in non-neuronal glial-like sheath cells in adult worms. The cephalic neurons CEPDR/L and CEPVR/L and amphid-associated sheath cells CEPshDR/L, CEPshVR/L were tentatively positive. Several other neurons that could be tentatively identified in the anterior part are MI, M4, I4, AVL, AIY, RIS, I5, M3R/L, and in the posterior part DVA, AS11, ALNR/L, DVC, DVB, PQR, DA9 (characteristic axonal process denoted by arrowhead), VD13, DD6, VD12. Of these, AVL, RIS, VD13, DD6 and VD12 are GABAergic based on the colocalization with the unc-47p::GFP reporter. In addition, IL neurons were tentatively identified in the anterior (IL*). Synaptogyrin reporter constructs are also expressed in developing neurons. The expression of sng-1p::YFP is closely associated with the development of the nervous system being absent in the gastrula stage with first fluorescence in neuronal precursor cells and newly-formed neurons in the anterior part during the 1.5-fold stage. In addition, it is also detected transiently in cells in the posterior body at the 1.25-fold and 1.5-fold stage.

• Primary Identifier: Expr15571

• Primary Identifier: Expr15572

• Primary Identifier: Expr15573

• Primary Identifier: Expr15579

• Primary Identifier: Expr15586

• Primary Identifier: Expr15651

• Primary Identifier: Expr15652

• Primary Identifier: Expr15589

• Primary Identifier: Expr13158

• Primary Identifier: Expr15591

• Primary Identifier: Expr15598

• Primary Identifier: Expr15604

• Primary Identifier: Expr14590
• Pattern: Embryonic expression of exc-7 was first observed at the bean stage. By reverse lineaging with use of SIMI-Biocell software, we confirm the identity of one of the expressing cells at this stage as the excretory canal cell. In L1 animals, broad expression in the head, ventral nerve cord (VNC), and tail was observed. In young adults, expression is notably observed in vulva cells. In the nervous system specifically, expression is observed in many neurons throughout the body, but unlike Drosophila Elav, exc-7::gfp it is not panneuronally expressed. We confirmed previously reported expression in cholinergic VNC MNs, but absence of GABAergic VNC MNs, consistent with previous reports (Fujita et al., 1999; Loria et al., 2003) and consistent with exc-7 functioning in cholinergic, but not GABAergic neurons to control alternative splicing (Norris et al., 2014). exc-7::gfp is also expressed in some non-neuronal cell types, including muscle and hypodermis, but not in the gut. A previous report showed that exc-7 is only transiently and weakly expressed in the excretory cell, which, based on exc-7's excretory mutant phenotype, has puzzled researchers (Fujita et al., 2003). We find that the gfp tagged exc-7 locus is strongly and continuously expressed in the excretory canal cell.

• Primary Identifier: Expr15608

• Primary Identifier: Expr15611

• Primary Identifier: Expr1824
• Remark: Cells expressing TAX-6 were visualized using several tax-6::gfp fusion genes. The expression of tax-6 is under diverse transcriptional controls. Reporter gene fusion type not specified. pAK43 is a larger transgene that should include all promoter regions for tax-6 transcription, since another gene is encoded just upstream of this region and tax-6 mRNA does not seem to be derived from a polycistronic transcript.
• Pattern: When introduced into wildtype animals, pAK43 drove TAX-6 expression in many sensory neurons, as well as interneurons including AIY and AIZ, and most, if not all, muscle cells. pAK43 is expressed in muscle, AIB, AIY, AIZ, RIA, RIB, RIS, RIM, ASI, ADF, ASH, ASK, ADL, AUA, PHA, PHB, AVE. It is also expressed in AFD, ASE, AWA, AWC, AVK, AIM, RMDV, AVA.

• Primary Identifier: Expr12801
• Pattern: flp-11 was expressed strongly in RIS and faintly in a few additional neurons.

• Primary Identifier: Expr249
• Pattern: AVG AVJ DVC PVC PVQ RIG RIS RMD RMEL/R SMD URY [Nature 378:82]

• Primary Identifier: Expr16053
• Pattern: A functional transcriptional reporter for CKR-1 revealed strong expression in many neurons and weak expression in the intestine. In the nervous system, ckr-1 expresses in the head and ventral cord neurons. CKR-1-expressing neurons include head motor neurons SMD and RME , interneurons AIB and RIM, peptidergic neurons RIS, and body motor neurons A, B, and D.

• Primary Identifier: Expr14034
• Pattern: ADL (dim), AVL, RIS, head mesodermal cell, pharynx (dim), pharyngeal-intestinal valve (dim), anal depressor muscle, stomatointestinal muscle, PVT, DVA, distal tip cell, CAN

• Primary Identifier: Expr10713
• Pattern: A hst-3.1 reporter displayed limited expression during early embryogenesis, but was visible in the pharynx and body wall muscle by the embryonic threefold stage. During larval and adult stages, the reporter continued to be expressed in body wall muscle, vulval muscle and the pharynx. In addition, we detected expression in at least six neurons in the head, including the NSM, RIH, RIS, and an unidentified pair of neurons as well as some select epithelial cells. No obvious expression was seen in either AIY or HSN interneurons. Additional expression is observed in the coelomocytes (cc), the distal tip cell (dtc), and rectal cells (U,F/K, B AND Y/PDA). In adults, expression is predominantly seen in body wall muscles, vulva muscles, the muscle arms, the pharynx, and the rectal epithelium.

• Primary Identifier: Expr8674
• Remark: Picture: N.A.
• Pattern: Expression in the alimentary canal: Strong and consistent expression in pharyngeal epithelium, pm1, pm2, pm3, pm4, mc2. Weak or rare expression in pm6, vir. Expression in the nervous system: AVD, AVK, RIS, URB. Pharyngeal and neuronal expression of inx-6 start around threefold stage, and some of the expression in head and tail neurons disappears after L1 stage.

• Primary Identifier: Expr7836
• Remark: In snf-11(ok156) mutants, anti-SNF-11 staining was completely absent, confirming the specificity of the staining. Picture: Fig 4.
• Pattern: In healthy young adults, the anti-SNF-11 antibody strongly stained the four RME neurons (RMED, RMEV, RMEL, and RMER). Faint staining of three additional GABAergic neurons (AVL, DVB, and RIS) was sometimes observed. Several non-GABAergic neurons, including RID, also seemed to stain. The ventral nerve cord DD and VD inhibitory motor neurons did not stain. Faint staining of the body wall, anal, and uterine muscles with the anti-SNF-11 antibody was observed in some animals.
• Subcellular Localization: Staining of both the processes and the soma of each neuron were observed. In RMED and RMEV, a punctate staining pattern was observed in the posteriorly directed processes, possibly corresponding to synapses.

12 Life Stages

Remark	Definition	Other Name	Public Name	Primary Identifier
	The whole period of embryogenesis in the nematode Caenorhabditis elegans, from the formation of an egg until hatching.		embryo Ce	WBls:0000003
	The C. elegans life stage spanning 620-800min(hatch) after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. A stage after elongation is over. The last stage of embryogenesis. Also called pre-hatched embryo, late embryo or morphogenetic embryo.		fully-elongated embryo Ce	WBls:0000021
	The C. elegans life stage spanning 350-620min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The stage that embryo starts elongation until elongation is over.		elongating embryo Ce	WBls:0000015
	The C. elegans life stage spanning 290-350min after first cleavage at 20 Centigrade. Proliferate from 421 cells to 560 cells. The stage when embryo just finished gastrulation and is enclosing.		enclosing embryo Ce	WBls:0000013
	The C. elegans life stage spanning 100-290min after first cleavage at 20 Centigrade. Proliferate from 28 cells to 421 cells. Referring to the whole period of gastrulation.		gastrulating embryo Ce	WBls:0000010
	The C. elegans life stage spanning 0-350min after first cleavage at 20 Centigrade. Proliferate from 1 cell to 560 cells. From start of first cleavage until cleavage is over.		proliferating embryo Ce	WBls:0000004
	The C. elegans life stage spanning 520-620min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo is elongated and tripple fold. A stage between 2-fold embryo and fully-elongated embryo. Also called pretzel embryo or pretzel stage.		3-fold embryo Ce	WBls:0000020
	The C. elegans life stage spanning 420-460min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo is elongated and fold back 50%. A stage between comma embryo and 2-fold embryo.		1.5-fold embryo Ce	WBls:0000018
	The C. elegans life stage spanning 390-420min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo looks like a comma. A stage between bean embryo and 1.5-fold embryo.		comma embryo Ce	WBls:0000017
	The C. elegans life stage spanning 460-520min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo is elongated and double fold. A stage between 1.5-fold embryo and 3-fold embryo.		2-fold embryo Ce	WBls:0000019
	The C. elegans life stage spanning 350-390min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. Emrbyo elongation started but have not formed comma shape yet. The shape of embryo looks like a lima bean. A stage right before comma embryo. Also called lima embryo or lima bean stage.		bean embryo Ce	WBls:0000016
	The C. elegans life stage spanning 210-350min after first cleavage at 20 Centigrade. Proliferate from 421 cells to 560 cells. The stage before the fast cleavage of cells finishes.		late cleavage stage embryo Ce	WBls:0000014

7 Parents

Definition	Name	Synonym	Primary Identifier
neuron with its cell body situated in the head, excluding the pharynx.	head neuron		WBbt:0006751
neuron that uses GABA as a vesicular neurotransmitter.	GABAergic neuron		WBbt:0005190
	interneuron		WBbt:0005113
ventral ganglion, posterior part.	ventral ganglion (post)		WBbt:0005264
cell that exists in and is part of an embryo.	embryonic cell		WBbt:0007028
neuron that has neural processes in the nerve ring.	nerve ring neuron		WBbt:0006974
embryonic cell	ABprpappap		WBbt:0006561