About   Help   FAQ
Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Htr4tm1Comp
targeted mutation 1, Valerie Compan
MGI:3027491
Summary 3 genotypes


Genotype
MGI:3027496
hm1
Allelic
Composition
Htr4tm1Comp/Htr4tm1Comp
Genetic
Background
129/Sv-Htr4tm1Comp
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Htr4tm1Comp mutation (0 available); any Htr4 mutation (31 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• only 18% of homozygotes are derived from heterozygous intercrosses over a 3-year period, indicating a small deviation from the expected Mendelian ratio

behavior/neurological
• homozygotes are hypersensitive to pentamethylenetetrazol (PTZ)-induced seizures, showing a higher number of deaths at 60 min post-treatment as well as reduced latency to both death and tonic seizure relative to wild-type controls
• homozygotes are less reactive to novelty-induced locomotion in the open field than wild-type controls, showing an overall 45% decrease in traveled path length on day 1 (but not day 2 or 3) of exposure in both the periphery and center of the open field
• however, no differences in home cage locomotor activity or motor coordination (rotarod test) are observed
• homozygotes show an attenuated response to stress-induced hypophagia relative to wild-type controls (-19.6% vs -36.4%, respectively), exhibiting a +24% increase in food intake during the first 24 hrs after an acute restraint stress (no food/water for 110 min) but resuming normal (baseline) consumption levels at 48 hrs after stress (J:87451)
• whether fed or food-deprived, BIMU8-treated mice fail to exhibit reduced food intake unlike in wild-type mice (J:125754)
• MDMA treated mice fail to exhibit a suppression in appetite unlike wild-type mice (J:125754)
• homozygotes spend significantly less time in the center of an open field during day 1 and 2 (but not day 3) of exposure than wild-type controls, suggesting a slight hyperanxiety-like behavior

nervous system
• homozygotes are hypersensitive to pentamethylenetetrazol (PTZ)-induced seizures, showing a higher number of deaths at 60 min post-treatment as well as reduced latency to both death and tonic seizure relative to wild-type controls

growth/size/body
N
• at 4 months of age, homozygotes display normal baseline eating and drinking behavior in their home cages (J:87451)
• no differences in social behavior, aggression, or sleep are observed relative to age-matched controls (J:87451)
• mice exhibit normal body weight after 3 days of habituation or 24 h food deprivation (J:125754)
• unlike wild-type controls, homozygotes fail to display a significant body weight loss during the first 4 days of recovery from an acute restraint stress
• however, no difference in body weight is observed between unrestrained wild-type and mutant mice during development or at 4 months of age

adipose tissue
• after restraint stress, homozygotes display a lower white adipose tissue weight/body weight ratio than wild-type controls (-38%), with no difference in their total body weight

homeostasis/metabolism
N
• no difference in corticosterone levels is noted between wild-type and mutant mice before or after the elevated plus maze
• normal metabolic parameters (feces, urine) are observed at 4 months of age
• whether fed or food-deprived, BIMU8-treated mice fail to exhibit reduced food intake unlike in wild-type mice
• MDMA treated mice fail to exhibit a suppression in appetite unlike wild-type mice

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
anorexia nervosa DOID:8689 J:125754




Genotype
MGI:6156532
hm2
Allelic
Composition
Htr4tm1Comp/Htr4tm1Comp
Genetic
Background
129S2.129S1(129T)-Htr4tm1Comp
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Htr4tm1Comp mutation (0 available); any Htr4 mutation (31 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
N
• mice exhibit normal body weight




Genotype
MGI:6156525
hm3
Allelic
Composition
Htr4tm1Comp/Htr4tm1Comp
Genetic
Background
B6.129S1(129T)-Htr4tm1Comp
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Htr4tm1Comp mutation (0 available); any Htr4 mutation (31 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
respiratory system
N
• mice exhibit normal bronchial responsiveness to serotonin in subacute cigarette smoke-exposed mice

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
NOT chronic obstructive pulmonary disease DOID:3083 OMIM:606963
J:261502





Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
Citing These Resources
Funding Information
Warranty Disclaimer, Privacy Notice, Licensing, & Copyright
Send questions and comments to User Support.
last database update
04/23/2024
MGI 6.23
The Jackson Laboratory