About   Help   FAQ
Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Mc4rtm1Dhu
targeted mutation 1, Dennis Huszar
MGI:2183586
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Mc4rtm1Dhu/Mc4rtm1Dhu B6.129S4-Mc4rtm1Dhu MGI:3639352
hm2
Mc4rtm1Dhu/Mc4rtm1Dhu involves: 129S4/SvJae * C57BL/6J MGI:3579026
cx3
Mc4rtm1Dhu/Mc4rtm1Dhu
Pomctm1Low/Pomctm1Low
involves: 129S2/SvPas * 129S4/SvJae * C57BL/6 MGI:4833825
cx4
Mc3rtm1Lvp/Mc3rtm1Lvp
Mc4rtm1Dhu/Mc4rtm1Dhu
involves: 129S4/SvJae * 129S7/SvEvBrd * C57BL/6J MGI:3850836


Genotype
MGI:3639352
hm1
Allelic
Composition
Mc4rtm1Dhu/Mc4rtm1Dhu
Genetic
Background
B6.129S4-Mc4rtm1Dhu
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mc4rtm1Dhu mutation (0 available); any Mc4r mutation (44 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• treatment of fasted female mice with CCK-8 inhibited food intake in wild-type mice but not in mutants between 30 and 180 minutes




Genotype
MGI:3579026
hm2
Allelic
Composition
Mc4rtm1Dhu/Mc4rtm1Dhu
Genetic
Background
involves: 129S4/SvJae * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mc4rtm1Dhu mutation (0 available); any Mc4r mutation (44 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• slower metabolic response to higher fat in the diet as measured by VO2
• increased body length at 19 weeks, disregarding tails
• weight normal until after 4 weeks of age (J:38224)
• by 5 weeks most mice were heavier than controls (J:38224)
• after 7 weeks, all mice were heavier than controls, by 50% for males and 2 fold for females (J:38224)
• conventionally housed mice are heavier than controls and heavier than mice with free access to a running wheel (J:94617)
• rapidly gain weight when no longer able to exercise but weight gain is reversed somewhat if opportunity to exercise is restored (J:94617)

behavior/neurological
• the stress of isolation inhibits feeding
• hyperphagia (J:38224)
• food consumption in females increased by 46% (J:38224)
• food consumption normal when given free access to a running wheel but become hyperphagic when access to running wheels is removed (J:94617)
• tended to exercise somewhat less than controls when given access to a running wheel
• more active in daylight

homeostasis/metabolism
• slower metabolic response to higher fat in the diet as measured by VO2
• levels elevated 1.5X in males and 4.5X in females at 4-8 weeks of age
• levels elevated 2.5X in males and 6.5X in females at 17-23 weeks of age
• in males only by 10-14 weeks of age
• at 17-23 weeks of age male blood glucose levels are 2X normal
• hyperinsulinemia in both males and females
• levels increased 5 fold in males and 9 fold in females at 4-8 weeks of age
• at 17-23 weeks of age levels increased to 14X normal in males and to 60X normal in females

reproductive system
• conventionally housed animals reproduced poorly, far fewer litters
• reproduced almost as well as controls when able to exercise

skeleton
• reduced number of osteoclasts
• exhibit high bone mass at 6 months of age

hematopoietic system
• reduced number of osteoclasts

immune system
• reduced number of osteoclasts

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
obesity DOID:9970 OMIM:601665
J:38224




Genotype
MGI:4833825
cx3
Allelic
Composition
Mc4rtm1Dhu/Mc4rtm1Dhu
Pomctm1Low/Pomctm1Low
Genetic
Background
involves: 129S2/SvPas * 129S4/SvJae * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mc4rtm1Dhu mutation (0 available); any Mc4r mutation (44 available)
Pomctm1Low mutation (1 available); any Pomc mutation (19 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• compared with either single homozygote

growth/size/body
• compared with either single homozygote




Genotype
MGI:3850836
cx4
Allelic
Composition
Mc3rtm1Lvp/Mc3rtm1Lvp
Mc4rtm1Dhu/Mc4rtm1Dhu
Genetic
Background
involves: 129S4/SvJae * 129S7/SvEvBrd * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mc3rtm1Lvp mutation (0 available); any Mc3r mutation (31 available)
Mc4rtm1Dhu mutation (0 available); any Mc4r mutation (44 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• at 26 weeks, female mice are 27% heavier than Mc4rtm1Dhu homozygotes
• at 26 weeks, male mice are 13% heavier than Mc4rtm1Dhu homozygotes

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
obesity DOID:9970 OMIM:601665
J:64365





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
04/09/2024
MGI 6.23
The Jackson Laboratory