What are C3H HeJ mice?
C3H/HeJ mice, commonly called C3H, are used as a general purpose strain in a wide variety of research areas including cancer, infectious disease, sensorineural, and cardiovascular biology research.
Do mice have TLR4?
Mouse. The mouse TLR4 gene maps to chromosome 4, SSC4:66.5 (45) and is made up of three exons (42) (Table 2).
What does TLR4 recognize?
Toll-like receptor 4 (TLR4) belongs to the family of pattern recognition receptors (PRRs). They are highly conserved receptors that recognize conserved pathogen-associated molecular patterns (PAMPs), thus representing the first line of defense against infections.
What cells are TLR4 expressed?
- Toll-like receptor 4 is a protein that in humans is encoded by the TLR4 gene.
- TRL4 expressing cells are myeloid (erythrocytes, granulocytes, macrophages) rather than lymphoid (T-cells, B-cells, NK cells).
What are CBA mice?
CBA inbred mice are derived from a cross of an unpedigreed Bagg albino female and an early DBA progenitor male. C3H mice are descended from the same cross. The CBA inbred strain was initially bred for longevity and a low incidence of spontaneous mammary tumors (compared with C3H).
Where is TLR4?
Functional TLR4 was found constitutively expressed at a low level in canine primary colonic epithelial cells and rapidly up-regulated following TLR4 ligand exposure. Activation of TLR4 signaling in these cells by LPS results in secretion of IL-8 and IL-7 (39, 51, 97).
Do macrophages express TLR4?
Activation of TLR4 is crucial to high-level production of TNF-α; in macrophages from the C3H/HeJ strain, which carries a mutated, functionally inactive Tlr4 gene (40), the amount of TNF-α protein detected in cell supernatants is markedly reduced (Fig.
How does TLR4 recognize LPS?
LPS is recognized by Toll-like receptor 4 (TLR4) which interacts with three different extracellular proteins: LPS binding protein (LBP), CD14 and, myeloid differentiation protein 2 (MD-2), to induce a signaling cascade leading to the activation of NF-κB and the production of proinflammatory cytokines.
Does LPS activate TLR4?
TLR4, as the other members of toll-like receptors family, is an essential player of innate immune system. It is activated by LPS, a Gram-negative bacterial cell wall component, as well as endogenous components derived from dying host cell.
Where is TLR4 found?
Tocris Summary for TLR4 Gene TLRs generally exist as homodimers (heterodimers have been reported) and are found on immune cells; macrophages, B lymphocytes and mast cells.
Do macrophages have TLR4?
We found that macrophages from the C3H/HeJ mouse strain, which carries a functionally inactive Tlr4 gene, exhibit marked impairment of tumor necrosis factor alpha (TNF-α) secretion in response to S.
Why are C3H/HeJ mice resistant to endotoxins?
A spontaneous mutation in Tlr4 occurred in C3H/HeJ at the lipopolysaccharide response locus (mutation in toll-like receptor 4 gene, Tlr4Lps-d) making C3H/HeJ mice more resistant to endotoxin. C3H/HeJ mice are highly susceptible to infection by Gram-negative bacteria such as Salmonella enterica.
Do C3H/HeJ mice carry MMTV?
C3H/HeJ and C3H/HeOuJ mice previously carried MMTV but were rederived in 1999 during planned efforts to increase the overall health status of the mice and the virus was not reintroduced. C3H/HeJ and C3H/HeOuJ substrains were separated in 1952 and are genetically very similar.
Is C3H/HeJ a recombinant inbred strain?
C3H/HeJ and C3H/HeJBir carry this inversion; C3H/HeSnJ and C3HeB/FeJ do not. Examination of recombination distances in Recombinant Inbred (RI) strain sets developed using C3H/HeJ as a progenitor suggest none of these harbor the inversion.
What is another name for C3H mice?
Also Known As: C3H Heston, C3, C3H. C3H/HeJ mice, commonly called C3H, are used as a general purpose strain in a wide variety of research areas including cancer, infectious disease, sensorineural, and cardiovascular biology research.