Project description:Transcriptional profiling of the antennae of adult honeybee workers with a dsx stop/stop mutation and wild-type workers was performed by RNA-Seq. Gene expression of the dsx stop/stop and wild type female workers was compared.
Project description:The purpose of this experiment was to compare RNA-seq profiles of adult male and female butterfly chemosensory tissues to identify tissue- and sex-specific differences in gustatory and olfactory gene expression. Three biological replicates per sex were produced from individual Heliconius melpomene rosina butterflies. For the antennal libraries, both antennae were used, for the labial palps + proboscis libraries both labial palps and each proboscis was used, and for the leg libraries all six legs were used.
Project description:We assessed the differential expression of genes in the adult antennae of pnt RNAi and control flies to understand how the expressions of olfactory receptors could change in response to cell fate alteration in the antennae.
Project description:Sex-specific gene expression in sensory organs may play an important role in mating and foraging behavior. We used long-oligonucleotide microarrays to compare gene expression profiles of males and females in three adult appendages that carry large numbers of chemosensory organs â antenna, proboscis, and front leg. Keywords: tissue-specific expression profiles Drosophila isogenic line WI89 was used. Adult male and female antennae (a3+arista), front legs (from distal tibia down), and proboscises were dissected at 1-2 hours after eclosion. Total RNA was extracted and the mRNA fraction was amplified by reverse transcription followed by in vitro transcription with T7 RNA polymerase.
Project description:H. saltator orco mutant has a reduced number of cells in the antennae. We performed RNA-seq of the developing pupal antennae to describe the developmental context of cell death in the mutant pupae.
Project description:Like humans, insects rely on precise regulation of their internal environments to survive. The insect renal system consists of Malpighian tubules and nephrocytes that share similarities to the mammalian kidney. Studies of the adult Drosophila Malpighian tubules and nephrocytes have led to many insights in our understanding of stem cell regeneration, protein reabsorption, excretion of waste products, and human kidney diseases. Here, we analyzed single-nucleus RNA sequencing (snRNA-seq) data sets to characterize the cell types of the adult male and female fly kidney.
Project description:H. saltator orco mutant has a reduced number of cells in the antennae. We performed RNA-seq of the antennae and compared the mutant to the wild type to identify any differentially expressed odorant receptor genes.
Project description:Arthropod genitalia and walking legs are serially homologous appendages derived from a ventral appendage ‘ground state’ shaped by different Hox inputs. However, there has been little comparison between the downstream gene regulatory networks and how they build and pattern serially homologous appendages differently. In the pre-tarsal region of the developing leg and antennae of Drosophila, a combination of the transcription factors C15, Lim1 homeobox 1 (Lim1), and Al (Aristaless) are required for the development of the terminal structures, the tarsal claws and aristae, respectively, but the role and interactions among these factors as well as other genes known to regulate leg development was not known in the developing genitalia. Here, we explored the expression and function of C15, Lim1, and Al in male and female terminalia (genitalia and analia) development. We found that C15 represses male clasper bristle development but is required for promoting female epiproct bristles. Unlike in the antennae and leg discs, C15, Lim1, and Al are never all co-expressed in any male or female terminal structures, evidencing the interactions among these factors have changed among serially homologous appendages. However, we did infer interactions between C15 and other factors, including bab2 and Dll reflecting similarities between leg and genital development consistent with their homology. Finally, we identified a male-specific clasper enhancer of C15, probably regulated by the Hox gene Abdominal-B, which is not active in the female terminalia or the legs or antennae. This enhancer modularity of C15 may underpin tissue-specific regulatory logic, presumably programmed by different Hox inputs such as Abd-B in the genitalia, and that could have contributed to the diversification of these serially homologous structures from the ‘ground state’ ventral appendage as well as the rapid evolution of terminal morphology among species.
Project description:We performed high-throughput snRNA-seq using the 10X Genomics Chromium platform on archived post-mortem dorsolateral prefrontal cortex (BA9) tissue in female MDD subjects who died by suicide and in female control subjects to identify cell-type specific differentially expressed genes. We further re-processed in parallel a previously generated snRNA-seq dataset in males with or without MDD to generate comparable differential expression results and compare the cell-type specific MDD-associated differences between the sexes.
