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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Map3k8+
wild type
MGI:2438233
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Map3k8M1Btlr/Map3k8+ C57BL/6J-Map3k8M1Btlr MGI:3817421
ht2
Map3k8m3Btlr/Map3k8+ C57BL/6J-Map3k8m3Btlr MGI:5688648
ht3
Map3k8M4Btlr/Map3k8+ C57BL/6J-Map3k8M4Btlr MGI:6113559


Genotype
MGI:3817421
ht1
Allelic
Composition
Map3k8M1Btlr/Map3k8+
Genetic
Background
C57BL/6J-Map3k8M1Btlr
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Map3k8M1Btlr mutation (1 available); any Map3k8 mutation (44 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• only ~25% of the expected number of heterozygous mutant mice are born; the developmental stage at which death occurs has not been determined
• surviving heterozygotes exhibit no overt phenotypic defects, are viable, and can breed

immune system
• heterozygous macrophages secrete somewhat diminished levels of TNF-alpha in response to lower doses of the TLR1/2 ligand Pam3SK4, but slightly elevated levels in response to higher doses
• peritoneal macrophages from mice heterozygous for this mutation exhibit impairment in TNF-alpha secretion in response to MALP2 and PGN signaling via TLR1/2, CpG-DNA signaling via TLR9, and LPS signaling via TLR4
• resiquimod signaling via TLR7 stimulates statistically normal TNF-alpha secretion by heterozygous mutant macrophages




Genotype
MGI:5688648
ht2
Allelic
Composition
Map3k8m3Btlr/Map3k8+
Genetic
Background
C57BL/6J-Map3k8m3Btlr
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Map3k8m3Btlr mutation (0 available); any Map3k8 mutation (44 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• some mice show reduced TNFalpha secretion in response to the Toll-like receptor ligands CpG oligodeoxynucleotide (TLR9), lipopolysaccharide (TLR4), Pam3CSK4 (TLR1/2), and poly(I:C) (TLR3)
• some mice show reduced TNFalpha secretion in response to the Toll-like receptor ligands CpG oligodeoxynucleotide (TLR9), lipopolysaccharide (TLR4), Pam3CSK4 (TLR1/2), and poly(I:C) (TLR3)

hematopoietic system
• some mice show reduced TNFalpha secretion in response to the Toll-like receptor ligands CpG oligodeoxynucleotide (TLR9), lipopolysaccharide (TLR4), Pam3CSK4 (TLR1/2), and poly(I:C) (TLR3)




Genotype
MGI:6113559
ht3
Allelic
Composition
Map3k8M4Btlr/Map3k8+
Genetic
Background
C57BL/6J-Map3k8M4Btlr
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Map3k8M4Btlr mutation (0 available); any Map3k8 mutation (44 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• reduced TNFalpha secretion in response to the Toll-like receptor ligand lipopolysaccharide





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)
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last database update
01/28/2026
MGI 6.24
The Jackson Laboratory