|
|
|
Expr4342
|
In first stage larvae (L1) of both sexes, ceh-22b::VENUS expression was not detected in SGPs(somatic gonadal precursor) at hatching, but became visible midway through the first larval stage (L1). After the SGP divided, the intensity of the reporter began to increase in distal SGP daughters (Z1.a and Z4.p) and began to diminish from proximal SGP daughters (Z1.p and Z4.a). In hermaphrodites, both progeny of the distal SGP daughter retained robust ceh-22b::VENUS expression through L2 or early L3. In males, the distal SGP daughter, which does not divide further, retained strong expression until L3; the expression decreased during L4. The ceh-22b::VENUS reporter was also expressed in the pharynx, intestine, and ventral nerve cord as well as in unidentified neurons in the head and tail. Expression in the pharynx and intestine was sustained throughout larval development into adulthood; expression in the ventral nerve cord was visible until L3. |
|
|
|
|
Expr4661
|
CYE-1::GFP was expressed in the Z1.a/Z4.p cells before their division. Within 2 hrs after their division, the GFP signal decreased in the Z1.aa/Z4.pp but not in the Z1.ap/Z4.pa cells. Therefore, CYE-1 is expressed asymmetrically between the daughters of the Z1.a/Z4.p cells. Similar asymmetric expression was also detected using a cye-1 promoter::GFP fusion gene (cye-1p::gfp), which lacks the cye-1 coding sequence, indicating that the asymmetry is regulated at the transcriptional level. |
|
|
|
|
Expr1455
|
Almost every transgenic animal shows strong DAF-3/GFP expression in many, but not all, head neurons, the ventral nerve cord (both cell bodies and processes), the intestinal cells, especially the membrane adjacent to the intestinal lumen, and tail hypodermal cells and neurons. Weak expression in the pharynx, hypodermal V blast cells, P blast cells and hyp7 hypodermal cells is observed in about half of the transgenic animals. Expression in the tail hypodermal cells hyp 9, hyp 10, and hyp 11 is clearly seen in nearly every animal. This apparent difference between tail hypodermal expression and main body expression may be a consequence of the anatomy of the animal. The main body hypodermis is underlain by bright GFP in the intestine and ventral nerve cord, so weak expression in the hypodermis is hard to see against this background. Expression is rarely detected in dorsal body wall muscle. DAF-3/GFP is expressed in the distal tip cells and in their precursors, Z1.a and Z4.p, throughout development. DAF-3/GFP is also expressed strongly in unidentified vulval cells in adults. In wild-type embryos of 200 to 400 cells, DAF-3/GFP is expressed uniformly thoughout the embryo. |
In wild type, DAF-3/GFP is primarily, although not exclusively, cytoplasmic. DAF-3/GFP subcellular distribution was examined in head neurons in the vicinity of ASI (the cell that produces the DAF-7 signal), as well as in intestinal cells. DAF-3/GFP was predominantly cytoplasmic in all animals. However, in all animals, dim GFP fluorescence was seen in the nucleus of some of the cells with bright cytoplasmic fluorescence, and in 25% of the animals, equivalent DAF-3/GFP levels in the nucleus and cytoplasm was observed in one or more cells. |
|
Expression pattern at adult stage was not described. |
|
Expr1410
|
Expression in Z1 and Z4, the somatic gonad precursors, starts a few hours after these are born. Up to the formation of the somatic gonad primordium in late L2, LIN-26 protein was detected in all cells of the somatic gonad, except in the distal tip cells or dtcs (Z1.aa and Z4.pp). Staining was strongest in Z1 and Z4 and became weaker after each cell division. However, after Z1.a and Z4.p divided, LIN-26 was initially not detected in any of their daughters, but resynthesis occurred in Z1.ap and Z4.pa. During the L3 stage, expression was only detected in the anchor cell (AC) until the Pn.pxx cells were generated. After the last division round in L4 larvae, all uterine nuclei and two spermathecal-uterine junction nuclei expressed LIN-26 at very low levels. |
nuclei |
|
|
|
Expr3976
|
The NHR-25 protein can be detected in the nuclei of Z1 and Z4 as well as in the nuclei of their daughter cells, but not in the Z2 and Z3 precursors of the germline. |
nuclei |
