From: Comparative mapping of the 22q11.2 deletion region and the potential of simple model organisms
Lethality (Knockout models)a | Knockout and knockdown phenotypes | |||||||
---|---|---|---|---|---|---|---|---|
Geneb | C. elegans | D. melanogaster | D. rerio | M. musculus | C. elegans | D. melanogaster | D. rerio | M. musculus |
PRODH | − | No (KO) | Not assessed (KO, prodha); − (LOC100537991) | No (KO) | Reduced accumulation rate of newly synthesized proteins, extended life span, increased thermo-tolerance (KD) | Hyperprolinemia, locomotor defects including indecisive movement patterns and hypoactivity (KO); Not assessed (KD) | Not assessed (KO, prodha); − (LOC100537991) | Reduced male body weight and prepulse inhibition (genetic background dependent), impaired fear conditioning, regionally altered levels of proline (hyperprolinemia), glutamate, gamma-aminobutyric acid, and aspartate in the brain (KO) |
DGCR14 | Embryonic lethality (KO); No (het-KO) | − | − | Not assessed (KO) | Higher frequency of male progeny, meiotic prophase defect (KD); Deregulated mRNA processing (KO); Normal phenotype (het-KO) | Not assessed (KD) | − | Not assessed (KO) |
SLC25A1 | − | Embryonic lethality (KO) | − (slc25a1a, slc25a1b) | Majority die before 12 weeks post-natal (KO) | Normal when assessed for lethality, sterility, anatomical morphology, development, and growth (KD) | Chromosomal breaks and global loss of DNA acetylation (KO) | Mitochondrial depletion, flattened head, small heart, brain, inner ear, intestine, and mandibular arch skeleton with defect severity proportional to gene suppression, neuromuscular junction defects regardless of phenotype severity (KD, slc25a1a); Not assessed (slc25a1b) | Mice examined at two weeks are small and sickly, and show generalized hypoplasia, most severely in liver and bone marrow (KO) |
HIRA | Embryonic lethality (KO) | Embryonic lethality (KO) | − | Embryonic lethality (KO); No (het-KO) | Not assessed (KO, KD) | Enhanced transcriptional suppression through variegation with transposable element probe, offspring of null mothers crossed with wild-type males do not develop while paternal null offspring show only partial lethality implying maternal effect (KO); Not assessed (KD) | Not assessed (KD) | Disrupted gastrulation, abnormal cardiac development (e.g., heart chambers), abnormal embryonic tissue morphology, abnormal placenta, craniofacial abnormalities, failure of brain to fuse and abnormal neural plate morphology (KO); Decreased leukocyte cell count (het-KO) |
MRPL40 | − | Embryonic lethality (KO) | − | Not assessed (KO) | Slow growth, larval arrest, reduced brood size, sterile progeny (KD) | Gross neuroanatomical defects due to under-proliferation of neuroblast cells during neurogenesis (KO); Not assessed (KD) | − | Not assessed (KO) |
UFD1L | − | No (KO) | Embryonic lethality (KO) | Not assessed (KO); No (het-KO) | Slow growth, gonad development deficits, enlarged gut granules, locomotor defect with deviations in self-propelled movement, patchy coloration, reduced life span (KD) | Stress response reduced as determined by virus infection assay (KO); Not assessed (KD) | Decreased eye size, abnormal head shape due to hypoplasia and misarranged features, necrotic central nervous system, increased thickness of mandibular arch skeleton, hypoplastic gut and liver (KO) | Not assessed (KO); Viable with no obvious heart defects (het-KO) |
CDC45 | Embryonic lethality (KO) | Lethal in the larval stage (KO) | Not assessed (KO) | Embryonic lethality (KO); No (het-KO) | Everted vulva, reduced brood size, sterility associated with no sperm development (KO); Sister chromatid segregation defective in early embryo, reduced brood size (KD) | Gross neuroanatomy defective due to reduced cellular proliferation causing small neuroblast size in the developing brain (KO); Not assessed (KD) | Not assessed (KO) | Impaired proliferation of inner cell mass after embryo implantation (KO); Normal when assessed for size, behaviour, and sterility (het-KO) |
Lethality (Knockout models) | Knockout and knockdown phenotypes | |||||||
Genea | C. elegans | D. melanogaster | D. rerio | M. musculus | C. elegans | D. melanogaster | D. rerio | M. musculus |
TBX1 | No (KO) | Partial embryonic lethality (KO) | Embryonic lethality (KO) | Embryonic lethality (KO); No (het-KO) | Abnormal uterine cell fate due to transcriptional abnormalities (KO); Normal when assessed for sterility, anatomical morphology, and development (KD) | Severely malformed or absent adult muscle precursors and supportive alary heart muscles (KO); Not assessed (KD) | Severely abnormal cardiac development (e.g., absent aortic arch), severe pouch defects and abnormal facial skeletal development, abnormal inner ear morphology (KO); Severely abnormal cardiac development (e.g., absent aortic arches) and thymus (KD) | Severely abnormal cardiac development (e.g., aortic arch), abnormal inner, middle, and outer ear morphology, abnormal lymphangiogenesis, abnormal cranial base morphology (KO); Mild cardiac abnormalities (e.g., fourth aortic arch arteries) and decreased prepulse inhibition (het-KO) |
TXNRD2 | – | – | – | Embryonic lethality (KO) | Hypersensitive to protein aggregation induced paralysis (KD) but otherwise normal when assessed for morphology and development (KO, KD) | Not assessed (KD) | – | Severe anemia and growth retardation due to perturbed cardiac development and augmented apoptosis of hematopoietic cells (KO) |
TANGO2 | – | Not assessed (KO) | Not assessed (KO) | – | Not assessed (KD) | Not assessed (KO, KD) | – | – |
DGCR8 | No (KO) | Lethal before end of pupal stage (KO) | Not assessed (KO) | Embryonic lethality (KO); No (het-KO) | Accumulation of miRNA target protein, decreased lifespan (KO); Reduced miRNA processing, accumulation of target mRNA, vulva defects, enhanced locomotor deficits of unc mutant (uncoordinated) phenotypes (KD) | Abnormal olfactory projection and mushroom body neuron morphology and neurophysiology (KO); Not assessed (KD) | Not assessed (KO) | Reduced dendritic spine number, reduced dendritic complexity, decreased prepulse inhibition and abnormal spatial working memory (het-KO) |
TRMT2A | No (KD) | No (KO) | Not assessed (KO) | Not assessed (KO) | Not maternally sterile but otherwise not assessed (KD) | Not sterile (KO); Not assessed (KD) | Not assessed (KO) | Not assessed (KO) |
MED15 | Reduced lifespan (KO) | Pupal lethality (KO) | – | – | Sterile, small, increased apoptosis, decreased protein expression, changes in mRNA expression, intestinal morphology, reduced lifespan, uncoordinated locomotion (KD); Hypersensitivity to toxin exposure (KO, KD) | Abnormal wing development (KO, het-KO); Abnormal wing development and shortened legs, formation of ectopic sensory organs and induced cellular apoptosis (KD) | Disruption of dorsal/ventral patterning and mesoderm development (KD) | – |
PI4KA | Embryonic lethality (KO) | Lethal before end of larval stage (KO) | – | Embryonic lethality (KO) | Slow growth and sterility (KD) | Abnormal eye morphology, neuromuscular junction overgrowth (KO); Not assessed (KD) | Decreased eye, head, and mesenchymal cell proliferation, increased apoptosis and necrosis of brain cells (KD) | Premature death due to degeneration of mucosal cells in the stomach and intestines (KO) |
SNAP29 | Embryonic lethality (KO) | Pupal lethality (KO) | – | Pre-weaning lethality (KO) | Defects in secretion from intestinal epithelial cells (KO); Sterility associated with endomitotic oocytes and pre-mitotic maturation of the oocyte, abnormal localization of phospholipid membrane components (KD) | Not assessed (KO); Synaptic defects characterized by abnormal basal neurotransmission. Lethality observed in the pupal stage (KD) | Disrupted pigmentation, epidermal irregular spatial pattern, disorganized keratinocyte cell surface (KD) | Not assessed (KO) |
AIFM3 | – | No (KO) | – | – | Normal when assessed for lifespan and sterility, anatomical morphology, development, and growth (KD) | Not sterile (KO); Not assessed (KD) | – | – |
SLC7A4 | – | Not assessed (KO) | Not assessed (KO) | – | Normal when assessed for sterility and anatomical morphology (KD) | Not assessed (KO, KD) | Not assessed (KO) | – |