UASt regulatory sequences drive expression of a 1.3kb Hsap\CASP1 cDNA that contains the entire protein-coding region.
Scer\GAL4Hml.PG-, Scer\GAL4Pxn.PS- or Scer\GAL4srp.D.cCa-mediated expression of Hsap\CASP1Scer\UAS.cSa ablates larval hemocytes.
Scer\GAL4srp.D.cCa-mediated expression of Hsap\CASP1Scer\UAS.cSa leads to a high lethality rate during early larval development - these larvae are devoid of hemocytes and rarely reach the third instar larval stage.
The paired lobes of the larval haematopoietic organ (lymph gland) are reduced in size in Scer\GAL4Pxn.PS, Hsap\CASP1Scer\UAS.cSa or Scer\GAL4Hml.PG, Hsap\CASP1Scer\UAS.cSa animals. These animals die during pupal stages, but the duration of the three larval stages is not altered and no melanotic tumours are observed.
Unlike wild type, Scer\GAL4Hml.PG Hsap\CASP1Scer\UAS.cSa larvae fail to clear bacterial loads after septic injury (with E. coli, E. carotovara or M. luteus) or oral infection (with E. carotovara).
Scer\GAL4sca-537.4-mediated expression causes lethality at different stages from embryos to pupae and expression of some lines allows viability (Cele\ced-3 is expressed in these lines). Mediated expression can elicit cell death in Drosophila.
Scer\GAL4389-mediated expression causes wing defects in emerging flies: anterior and posterior regions of the wing are missing. Cell death is induced in two lateral regions of the third instar wing disc. Scer\GAL411H-1-mediated expression causes larval lethality or in some lines 'giant larvae' that remain alive for as long as 3 weeks. Most of the cells that secrete ecdysone are missing in the prothoracic gland of these larvae. Cell death is also observed in the ring gland of first instar larvae.
Hsap\CASP1UAS.cSa, Scer\GAL4sca-537.4 has partially lethal - majority die phenotype, suppressible by BacA\p35UAS.cHa, Scer\GAL4sca-537.4
Hsap\CASP1UAS.cSa, Scer\GAL4sca-537.4 has macrochaeta | pharate adult stage phenotype, suppressible by BacA\p35UAS.cHa, Scer\GAL4sca-537.4
Cell death can be blocked by coexpressing BacA\p35Scer\UAS.cHa, using Scer\GAL4sca-537.4.