C57BL/6JCya-Flt3em1flox/Cya
Common Name:
Flt3-flox
Product ID:
S-CKO-02456
Background:
C57BL/6JCya
Product Type
Age
Genotype
Sex
Quantity
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Basic Information
Strain Name
Flt3-flox
Strain ID
CKOCMP-14255-Flt3-B6J-VA
Gene Name
Product ID
S-CKO-02456
Gene Alias
B230315G04; CD135; Flk-2; Flk2; Flt-3; Ly72; wmfl
Background
C57BL/6JCya
NCBI ID
Modification
Conditional knockout
Chromosome
5
Phenotype
Document
Application
--
Note: When using this mouse strain in a publication, please cite “C57BL/6JCya-Flt3em1flox/Cya mice (Catalog S-CKO-02456) were purchased from Cyagen.”
Strain Description
Ensembl Number
ENSMUST00000049324
NCBI RefSeq
NM_010229
Target Region
Exon 3
Size of Effective Region
~1.0 kb
Detailed Document
Overview of Gene Research
Flt3, also known as FMS-like tyrosine kinase 3, is a type III receptor tyrosine kinase expressed almost exclusively in the hematopoietic compartment [5]. Its ligand, FLT3 ligand (FL), induces dimerization and activation of its intrinsic tyrosine kinase activity. Activation of FLT3 leads to autophosphorylation and initiates signal transduction cascades like STAT5, MAPK, and AKT, mediating cell survival, proliferation, and differentiation of hematopoietic progenitor cells [4,5].
Mutations of the Flt3 gene occur in approximately 30% of all acute myeloid leukemia (AML) cases [1]. The internal tandem duplication (ITD) in the juxtamembrane domain is the most common type (about 25% of all AML cases), while mutations in the tyrosine kinase domain (FLT3-TKD, about 7-10% of cases) are less frequent [1,3]. FLT3-ITD is a driver mutation associated with high leukemic burden, increased relapse, and poor prognosis in AML patients [1,2]. Multiple small-molecule inhibitors of FLT3 signaling have been developed, with midostaurin and gilteritinib approved in the United States [2]. However, resistance to these inhibitors through secondary FLT3 mutations, upregulation of parallel pathways, and extracellular signaling remains a challenge [2].
In conclusion, Flt3 plays a crucial role in hematopoietic cell survival, proliferation, and differentiation. Its mutations, especially FLT3-ITD, are significant in AML, conferring a poor prognosis. The development of FLT3 inhibitors has improved treatment for AML patients with Flt3 mutations, but resistance remains a major obstacle. Research on Flt3, including through genetic models, is essential for understanding AML and developing more effective therapies [1-10].
References:
1. Daver, Naval, Schlenk, Richard F, Russell, Nigel H, Levis, Mark J. 2019. Targeting FLT3 mutations in AML: review of current knowledge and evidence. In Leukemia, 33, 299-312. doi:10.1038/s41375-018-0357-9. https://pubmed.ncbi.nlm.nih.gov/30651634/
2. Kennedy, Vanessa E, Smith, Catherine C. 2020. FLT3 Mutations in Acute Myeloid Leukemia: Key Concepts and Emerging Controversies. In Frontiers in oncology, 10, 612880. doi:10.3389/fonc.2020.612880. https://pubmed.ncbi.nlm.nih.gov/33425766/
3. Negotei, Cristina, Colita, Andrei, Mitu, Iuliana, Stanca, Oana, Berbec, Nicoleta Mariana. 2023. A Review of FLT3 Kinase Inhibitors in AML. In Journal of clinical medicine, 12, . doi:10.3390/jcm12206429. https://pubmed.ncbi.nlm.nih.gov/37892567/
4. Kiyoi, Hitoshi, Kawashima, Naomi, Ishikawa, Yuichi. 2019. FLT3 mutations in acute myeloid leukemia: Therapeutic paradigm beyond inhibitor development. In Cancer science, 111, 312-322. doi:10.1111/cas.14274. https://pubmed.ncbi.nlm.nih.gov/31821677/
5. Kazi, Julhash U, Rönnstrand, Lars. . FMS-like Tyrosine Kinase 3/FLT3: From Basic Science to Clinical Implications. In Physiological reviews, 99, 1433-1466. doi:10.1152/physrev.00029.2018. https://pubmed.ncbi.nlm.nih.gov/31066629/
Quality Control Standard
Sperm Test
Pre-cryopreservation: Measurement of sperm concentration, determination of sperm viability.
Post-cryopreservation: A vial of cryopreserved sperms is selected for in-vitro fertilization from each batch.
Environmental Standards:SPF
Available Region:Global
Source:Cyagen