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See also WBPaper00045644. |
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Expr989
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At hatching and during the time of Q cell migration, egl-20::gfp was expressed exclusively within a group of epidermal and muscle cells located in the posterior of the animal near the anus. These cells are equi-distant from either Q cell at hatching and are symmetrically distributed on the left and right sides of the animal. Both the level and the distribution of EGL-20::GFP are similar on the left and right sides of the animal. |
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Expr10713
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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. |
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Picture: Figure S3. |
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Expr7883
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Expressed in the B, F, K, and U hypodermal cells, also anal depressor muscle. |
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Picture: Figure S3. |
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Expr7882
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Expressed in the B, F, K, and U hypodermal cells, also anal depressor muscle. |
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Three methods, lacZ, gfp, antibody staining results all mixed together. Lots of unextracted cell objects buried in pattern text. |
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Expr841
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PAL-1 produced from zygotic transcripts is seen initially in C and D lineage cells that also expressed maternally derived PAL-1. As gastrulation begins, expression is seen in only Ca and Cp and then in their daughters, of which 2 are hypodermoblasts (Caa and Cpa) and 2 are myoblasts (Cap and Cpp). The GFP reporter is first detected at the late 2C-cell stage and then more strongly in the 4 daughters. At about 100 cells, expression is also detected in the 2 D-lineage myoblasts. Thereafter, PAL-1 continues to be detected in all C and D descendants until the end of gastrulation at about 350 cells. At about 180 cells (midgastrulation), the C hypodermal precursors, which express more strongly than the muscle precursors, form a characteristic double row on each side of the dorsal midline in the posterior. Thereafter, PAL-1 decreases in these cells and is no longer detectable with antibody after 350 500 cells. At about 250 cells, expression is detected in two AB cells that border the posterior left edge of the mesectodermal cell layer that is closing the ventral gastrulation cleft (ABplpappp and ABplppppp) and slightly later in the right homolog of one of them (ABprppppp). The daughters and granddaughters of these cells, generated after the cleft closes, continue to express strongly along the ventral midline until about the time of hatching. Beginning at about 360 cells, as morphogenesis begins, weak transient expression is detected in the posterior ectodermal P cells and occasionally in posterior V cells as both groups move ventrally. During this period the V cells become the lateral seam cells, and the P cells undergo their terminal embryonic divisions as they complete hypodermal enclosure of the embryo. Meanwhile, in the interior, pal-1 expression, detectable both with antibody and with reporter constructs, appears at about 350 cells in 2 Ea descendents near the middle of the gut primordium (the int5 pair) and in 2 anteriorly located MS descendants which migrate to the posterior and become the mesoblast M and the right intestinal muscle (mu intR). During early morphogenesis as the embryo develops through the comma stage and begins to elongate, all the pal-1-expressing cells (approximately 50) are located in the posterior ventral region, except for the 2 midgut cells which lie more dorsally. The descendants of ABpl/rppppp, as well as mu intR, move into the elongating tail and participate in formation of the rectal and associated intestinal muscles, as well as the ventral tail hypodermis. Expression diminishes during elongation and by hatching is detectable only in the 2 gut cells, M, mu intR, and 10 cells descended from ABpl/rppppp. |
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Expr12601
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sox-2 expression is restricted to subsets of neuroblasts. sox-2 is expressed relatively late in nervous system development, in the progenitor of differentiated neurons, but not in earlier neuroectodermal cells. sox-2 is also expressed in some progenitors of non-neural tissue, in the head hypodermis and the arcade cells. sox-2 is expressed in several postembryonic blast cells that are generated in the embryo. These blast cells include the B, Y, F, U and K rectal epithelial cells and the seam cells along the body. Although expression of sox-2 is absent in the terminal neurons generated by these lineages, sox-2 expression extends beyond the blast cell stage [e.g. sox-2 expression is maintained in the V5 daughters (V5a and V5p) but is lost in the next division].sox-2 is expressed in the sensory neurons AWB, AWC, IL1, IL2, URA, URB, OLL, the interneurons AIM, AIN, AVK, RIH and the motor neuron class RME. The sox-2 fosmid reporter or sox-2 smFISH did not show any expression in the germ line or oocytes of young adult worms. Expression patterns obtained by smFISH were very similar to the ones observed with fosmid reporters. |
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Reporter gene fusion type not specified. |
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Expr862
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At the L1 larval stage CEH-6ceh-6 is expressed in four pairs of bilaterally symmetric neurons in the lateral ring ganglion of the animal. These neurons are the RMDDLR, RMDVLR, AUALR and AVHLR neurons. The expression in RMDD and RMDV is weaker than in AUA and AVH. ceh-6 is also expressed in the excretory cell, very strongly with the lacZ reporter construct but more weakly with the antibody, which is probably due to the large volume of the nucleus. Despite the nuclear localization signal in the lacZ construct, the beta-galactosidase was occasionally expressed at such high levels that the excretory canals were also stained. Posterior to the excretory cell, the neurons SABVLR in the retro-vesicular ganglion express CEH-6ceh-6. Additional CEH-6-expressing cells in the body and tail were observed only with the antiserum, indicating that the ceh-6 reporters may not contain all promoter elements. In the body region, expression was observed in dividing P.na cells in the ventral nerve cord in L1 animals. The Pn.a expression is transient, appearing before the cell division of Pn.a and fading in the daughter cells. During the cell division, CEH-6 is localized to the cytoplasm of the dividing cells. It appears that the posterior daughters lose CEH-6 before that of the anterior daughter, as seen in the anterior Pn.ap cells. In the tail, CEH-6 expression in L1 animals is seen around the rectum in the five rectal cells B, Y, U, F and K. After K has divided, only the rectal cell K.a expresses CEH-6, though expression during the division was not monitored. At the L2 stage, a sixth cell becomes apparent that, based on its position at the very bottom of the rectum, is deduced to be P12.pa. Head and rectal expression of CEH-6 persists into adulthood. In addition, in adult animals four symmetric CEH-6 expressing cells are seen around the vulva, possibly one set of the vul cells, though did not determine their identity. During embryogenesis ceh-6 is expressed at the comma stage in two clusters one cluster corresponds to the ectodermal cells surrounding the anus (B, Y, U, F and K), and the other cluster corresponded to the cells in the head described above, many of which are located relatively close to each other at that stage in development. |
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Reporter gene fusion type not specified. |
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Expr2728
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In two independent transgenic lines, expression was observed in embryos, larvae and adults in the posterior body region near the anus and in the tail. In L1 larvae, expression was seen in the rectal blast cells B, Y, U, F and K. HSN also expressed LacZ. |
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This information was extracted from published material (Archana Sharma-Oates, Andrew Mounsey and Ian A. Hope). |
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Expr668
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Postembryonic expression is observed in the rectum epithelium. A major site of EGL-5 expression is in the rectal epithelium. At hatching, the rectal expression is in K, F, B, U and Y. In addition expression is seen in (Y differentiates into) PDA motor neuron, (K divides to rise to) part of dorsal rectal epithelium and a cell that becomes DVB motor neuron. In males male-specific neurons show expression. In males Ab staining is observed in B.a and B.p as well as Y.p and Y.p in L1 and early L2. It appears that most/all B, Y, U, F, K descendants express EGL-5. Ventral neuroblast P12, staining is first seen in P12.a and P12.p in 12-h worms. Staining is maintained in P12 descendants in 15-h until adulthood. Both sexes' mechanosensory neurons, expression is seen in PLM neurons throughout larval development. In addition two cells express EGL-5, one in anterior region of each lumbar ganglion, likely to be PVC interneurons. Both sexes' muscles cells, expression is detected in 4-6 left/right pairs of posterior body-wall muscle cells in L1 larvae at earliest examined time 10-12 h. At L2 staining is detected in 12 left/right pairs of nuclei. Staining is strongest in the most posterior nuclei and tapers of towards the anterior. Staining in posterior body wall muscle cells remains throughout larval development and into adulthood in both sexes. In L3 males, sex-specific muscle lineages and sex-specific muscles stain strongly. These muscles include the diagonal muscles, muscles of spicule, gubernaculum and other sex muscles. Staining in these muscles persist until adulthood. HSN neurons, expression from L1 onwards through to adulthood. Male gonad, first detected in the male gonad in late L1 in a group of 6 cells at the anterior end. It appears that expression is clustered in a region that consists of both somatic cells and germ cells. Later at the beginning of the late mitotic period, staining nuclei lose their clustered arrangement. By 34 h, staining is seen in several dividing cells that form the primordium of the seminal vesicles as well as in two large nuclei in the valve region. In the nuclei of diving cells staining surrounds a condensed chromatin. This pattern persists until the end of the late mitotic period (35-37 h posthatching) when staining is also detected in sperm cells. No staining was observed in cells of the vas deferens. Lateral hypodermis, expression is seen in male seam from mid-L2. Staining first appears in V6.ppp at 20-22 h postembryonic development. Staining persists in V6.pppa and V6.pppp but at a lower level. Intensity of staining increases in R5 and R6 and to lesser degree in R4. Identification of staining cells in ray sublineages was not possible due to intense fluorescence of B-lineage cells lying in the same region. However it was possible to observe expression of a reporter gene in R4, R5, and R6 and also in cells of the R5 and R6 sublineages. |
Expressed in the nuclei. |
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Picture: N.A. |
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Expr8184
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sem-4 is expressed in all rectal cells in L1s hermaphrodites (i.e., Y, U, B, F, K, and K') and in all rectal cells, including P12.pa, in L3 or older worms. |
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Expr16157
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We confirmed the expression of this construct in F and U, but detected expression at lower frequency and level in other hindgut cells in hermaphrodites grown at 20C. Expression is also observed in K and K'. In wild type, cdh-3::gfp expression is never observed in Y. In contrast, the B cell expresses cdh-3::gfp at low levels in wild type. |
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Expr9343
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egl-20 was mostly localized to the posterior half of L1 larvae, in a pattern that was already present at the comma stage of embryonic development. egl-20 was expressed in the rectal epithelial cells K, F, U and B, in the anal depressor muscle and in P11/12, which is in agreement with previous reporter studies (Whangbo and Kenyon, 1999). However, it was found that in L1 larvae, egl-20 was also expressed in the posterior ventral body wall muscle quadrants VL23 and VR24 and the rectal epithelial cell Y. |
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Interestingly, Y is replaced in the hindgut by P12.pa, a descendant of the only P cell in which PEB-1 protein expression was detected in L1 larvae. No detailed description on cellular expression patterns in pharynx, try to find those information in Expr838. |
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Expr3462
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In summary, PEB-1 accumulated in L1 larvae in the nuclei of all hypodermal cells and the epithelial cells lining the rectal lumen. As in the pharynx, PEB-1 was not detectable in neuroblasts or differentiated neurons. PEB-1-expressing cells are not obviously related by cell type or lineage. Rather, one striking common feature of these cells is that they contact the cuticle on the exterior of the worm or lining the pharyngeal or rectal lumen. Like in the pharynx, PEB-1 was first detected in the hypodermal nuclei in comma stage embryos (approximately 400 min) and remained detectable until hatching. In 1 1/2-fold stage embryos, the PEB-1 protein was detected in the nuclei of most, if not all, hypodermal cells including hyp5, hyp6, and hyp7 and the H, P, and V cells. After hatching, PEB-1 remained detectable in most hypodermal cells although it decreased in later larvae and was undetectable in adults. In the L1 lateral hypodermis, the PEB-1 protein was detected in H0, H1, H2, V1 to V6, and T, and their anterior and posterior daughters, as well as in the nuclei of the hyp7 syncytium. PEB-1 was also detected in many of the dorsal and ventral hypodermal nuclei in the head and the ventral hypodermal nuclei in the tail. Notably, PEB-1 was not detected in larval P cells. In addition, PEB-1 was not detected in other neuroblasts including Q and T.p. PEB-1 was also expressed in cells lining the lumen of the hindgut. In 1 1/2-fold embryos (approximately 420 min), PEB-1 was detected in many nuclei near the posterior of the embryo. These likely include both the posterior hypodermal cells and hindgut cells, although these cells cannot be easily distinguished at this stage. In L1 larvae, PEB-1 was detected in many of the non-neuronal nuclei surrounding the rectal lumen, including K, K', U, F, B, and Y. PEB-1 was not detected in the rectal-intestinal valve or the anal depressor muscle. As in other tissues, the PEB-1 protein remained detectable in the hindgut throughout larval development but became progressively less abundant and undetectable in adults. Importantly, this progressive decrease in PEB-1 expression also occurs in Y, which withdraws from the hypodermis during late larval development to become a neuron. |
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Expr11176
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Expression of egl-20 is high throughout the entire life span of the worm and increases during aging. As in development, egl-20 expression was observed only in the posterior of the animal. The egl-20/Wnt is expressed in the anal depressor muscle and in the postembryonic rectal epithelial cells (B, F, K, and U) during aging. These cells also express egl- 20/Wnt during larval development (Gleason et al. 2006). However, the authors did not observe any expression in hypodermal or muscle cells, as previously reported. |
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Expr8164
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Expressed in intestine: Exxx (20 intestine cells). Onset time: <200 cells. Expressed in pharynx: ABalpaxxx, ABaraaxxx, ABarapaxxx (57 pharyngeal cells, 4 neurons, 4 hypodermal cells). MSaaxxx, MSpaxxx (37 pharyngeal cells, 2 neurons, 10 muscle cells). Onset time: <200 cells. Expressed in rectal precursors: ABprpapppxx, ABprpppppax, ABplpppppax, ABplpapppxx (7 rectal and digestive muscle cells, 2 neurons, 1 muscle cell.) Onset time: >350 cells. |
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Expr3510
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Pdaf-6GFP was expressed in the amphid sheath glia. Expression was also seen in amphid socket cells, the phasmid sensory organ sheath and socket cells, cells of the excretory system (the excretory canal, duct, pore, and gland cells), the vulval E and F cells, the K, K', F, and U rectal epithelial cells, and less frequently in posterior intestinal cells. |
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Expr3511
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In the amphid, DAF-6::GFP fusion protein expression usually persisted only up to the L1 larval stage, and the protein localized to the region of the amphid channel formed by the sheath and socket cells. DAF-6::GFP also localized to the luminal surfaces of tubes generated by other cells expressing daf-6. As in the amphid, expression in the phasmid sheath and socket cells usually did not persist beyond the L1 larval stage. Expression in vulval cells was usually restricted to the L4 larval stage, after the cells were generated and during or shortly after the vulval lumen was generated. Expression in the rectum and excretory system was observed throughout embryogenesis and larval development, but usually not during adulthood. DAF-6::GFP protein was detected in punctate structures within the cytoplasm of expressing cells. This localization was best seen in the vulva and in the excretory canal cell. Thus, DAF-6 may localize to vesicles as well. |
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Picture: Fig 4. |
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Expr8969
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This operon, when introduced as a transgene, fully restored bacterial adhesion and tail swelling to infected animals, and exhibited the same expression in cells K, F, and U, with a diffuse cytoplasmic distribution of the GFP reporter. |
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Picture: Fig. 4. |
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Expr8968
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Transgenic animals carrying this reporter showed strong fluorescence in the presumptive rectal epithelial cells K, F, and U. This localization was confirmed using a hindgut-specific marker, lin-48p::GFP, which expresses in the same cells. |
The reporter construct exhibited a conspicuous punctate peri-nuclear pattern of fluorescence in these cells, consistent with localization to the endoplasmic reticulum or Golgi apparatus. |
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No detailed description on postembryonic expression pattern. |
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Expr1419
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PHA-4 was observed in the nuclei of cells destined to form the digestive tract. At the 4E stage, weak expression is detected in 8 MS great-granddaughters and 10 ABa descendants (ABaraaaa/p, ABaraapa/p, ABarapaa/p, ABalpaaa/p, ABalpapa/p) that each produce pharyngeal cells, as well as nonpharyngeal cells. Faint expression was also detected in the four midgut precursors. Brighter staining is observed in 6 to 8 MS-derived and 16 to 18 ABa-derived cells after the next cell division (MSaaaa/p, MSaapa/p, MSpaaa/p, MSpapa/p). Soon thereafter, at the 8 to 12E stage, PHA-4 is first observed in the rectal precursors. Expression is maintained in all pharyngeal, midgut, and rectal cells throughout embryogenesis. |
nuclei |
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Expr2401
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In addition to hindgut cells, lin-48::gfp is expressed in the excretory duct cell, neuronal support cells of the phasmid and labial sensory structures and a small number of additional unidentified cells in the head. In the hindgut, these transgenes are expressed in U, F, K' and K cells. Male animals exhibit additional expression in the developing tail structures. lin-48::gfp expression is initiated in late embryogenesis and persists into adulthood. |
The chimeric LIN-48::GFP protein is localized to the nuclei of expressing cells. |
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Expr2264
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This construct was expressed in several tissues: AC, spermatheca and K lineage. In all cases expression could be detected at the appropriate time. In addition, unexpected vulval expression was found from the early to mid fourth larval (L4) stage in the vulF cells, which are the dorsal-most 1 vulval progeny. The expression appeared to be 1-vulva-specific because the vulval lin-3::lacZ expression was absent in animals bearing a strong lin-12(gf) mutation, which confers a multivulva phenotype consisting of only 2 lineages. |
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Reporter gene fusion type not specified. |
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Expr2726
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Expressed in K and K'. Not expressed in intestino-rectal valve, rectal epithelial cells, U, R, B or Y cells. |
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