About   Help   FAQ
Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Becn1tm1Ebr
targeted mutation 1, Edmund B Rucker III
MGI:5308732
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Becn1tm1Ebr/Becn1tm1Ebr
Lyz2tm1(cre)Ifo/Lyz2+
involves: 129P2/OlaHsd MGI:6287976
cn2
Becn1tm1Ebr/Becn1+
Tg(MMTV-cre)1Mam/?
involves: FVB MGI:5308737
cn3
Becn1tm1Ebr/Becn1+
Tg(EIIa-cre)C5379Lmgd/?
involves: FVB/N MGI:5308738


Genotype
MGI:6287976
cn1
Allelic
Composition
Becn1tm1Ebr/Becn1tm1Ebr
Lyz2tm1(cre)Ifo/Lyz2+
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Becn1tm1Ebr mutation (0 available); any Becn1 mutation (35 available)
Lyz2tm1(cre)Ifo mutation (14 available); any Lyz2 mutation (41 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• mice appear normal at weaning but fail to gain weight

hematopoietic system
• increase in levels of circulating neutrophils
• increase in levels of circulating lymphocytes
• increase in levels of circulating monocytes
• spleens show increased expression of interferon signature genes such as Ddx58 and Isg95
• IgG deposition in the glomeruli of kidneys
• macrophages exhibit an acute elevation of proinflammatory cytokines IL-1beta, IL-6, and IP-10, but not IL-10, in response to ingesting dying cells that is not seen in control macrophages
• however, neither bone marrow-derived macrophages nor peritoneal exudate macrophages from 52 week old mice show any defects in the engulfment of dying cells in vitro indicating normal phagocytic capacity

homeostasis/metabolism
• levels of CXCL1, CCL4 and CCL2 are increased in 52-week old mice

immune system
• increase in levels of circulating neutrophils
• increase in levels of circulating lymphocytes
• increase in levels of circulating monocytes
• spleens show increased expression of interferon signature genes such as Ddx58 and Isg95
• IgG deposition in the glomeruli of kidneys
• macrophages exhibit an acute elevation of proinflammatory cytokines IL-1beta, IL-6, and IP-10, but not IL-10, in response to ingesting dying cells that is not seen in control macrophages
• however, neither bone marrow-derived macrophages nor peritoneal exudate macrophages from 52 week old mice show any defects in the engulfment of dying cells in vitro indicating normal phagocytic capacity
• levels of CXCL1, CCL4 and CCL2 are increased in 52-week old mice
• mice develop a systemic lupus erythematosus-like disease (SLE)
• increase in serum levels of a broad array of antibodies against autoantigens commonly associated with SLE
• kidneys from aged mice show endocapillary proliferative glomerulonephritis

renal/urinary system
• mice show indications of kidney damage and show increased functional markers of kidney injury
• IgG and complement C1q deposition in the glomeruli of kidneys
• kidneys from aged mice show endocapillary proliferative glomerulonephritis




Genotype
MGI:5308737
cn2
Allelic
Composition
Becn1tm1Ebr/Becn1+
Tg(MMTV-cre)1Mam/?
Genetic
Background
involves: FVB
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Becn1tm1Ebr mutation (0 available); any Becn1 mutation (35 available)
Tg(MMTV-cre)1Mam mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• only 2 of 100 neonates survive through day 1
• high level of death associated with heart and brain defects at embryonic days 11.5 and 12.5

reproductive system
• non uniform distribution of primordial follicles
• reduced number of primordial follicles

cardiovascular system
• high level of death associated with heart defects at embryonic days 11.5 and 12.5

nervous system
• high level of death associated with brain defects at embryonic days 11.5 and 12.5

endocrine/exocrine glands
• non uniform distribution of primordial follicles
• reduced number of primordial follicles




Genotype
MGI:5308738
cn3
Allelic
Composition
Becn1tm1Ebr/Becn1+
Tg(EIIa-cre)C5379Lmgd/?
Genetic
Background
involves: FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Becn1tm1Ebr mutation (0 available); any Becn1 mutation (35 available)
Tg(EIIa-cre)C5379Lmgd mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• high level of death associated with heart and brain defects at embryonic days 11.5 and 12.5

cardiovascular system
• high level of death associated with heart defects at embryonic days 11.5 and 12.5

nervous system
• high level of death associated with brain defects at embryonic days 11.5 and 12.5





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