In Vivo (Add solvents to the product individually and in order.)
Homogeneous suspension
CMC-NA
≥5mg/ml
Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution
4% DMSO
40%PEG300
5%Tween80
51%ddH2O
Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.
5.000mg/ml
(8.86mM)
Taking the 1 mL working solution as an example, add 40 μL of 125 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 510 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
* <1 mg/ml means slightly soluble or insoluble. * Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations. * Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)
Preparing Stock Solutions
Biological Activity
Description
MI-503 is a potent and selective Menin-MLL inhibitor with IC50 of 14.7 nM. It shows pronounced growth suppressive activity in a panel of human MLL leukemia cell lines(GI50 at 250 nM-570 nM range), but only a minimal effect in human leukemia cell lines without MLL translocations.
Targets
Menin-MLL interaction (Cell-free assay)
14.7 nM
In vitro
Treatment of murine bone marrow cells (BMC) transformed with the MLL-AF9 oncogene with MI-503 results in substantial growth inhibition, with half-maximal growth inhibitory concentration (GI50) values of 0.22 μM, measured after 7 days of treatment. The cell growth inhibitory effect of this compound is time-dependent, with a pronounced effect achieved after 7-10 days of treatment. It is also very effective in inducing differentiation of MLL leukemia cells and substantially increases expression of CD11b, a myeloid differentiation marker. These effects are accompanied by reduced c-kit (CD117) expression, a marker associated with leukemia stem cells (LSCs). Treatment with sub-micromolar concentrations of this chemical also leads to markedly reduced expression of Hoxa9 and Meis1, downstream targets of MLL fusion proteins substantially upregulated in MLL leukemias.
In Vivo
MI-503 has very favourable drug-like properties, including metabolic stability and pharmacokinetic profile in mice. It blocks haematologic tumours in vivo and reduces MLL leukaemia tumour burden. This compound achieves a high level in peripheral blood following a single intravenous or oral dose, while also showing high oral bioavailability (~75%). Prolonged treatment (38 days) with this chemical induces no toxicity in mice as reflected by no alterations in the body weight and no morphological changes in liver and kidney tissues. It could substantially improve survival of MLL leukaemic mice and does not impair normal haematopoiesis in vivo.
For viability assays, leukemia cells are plated at relevant concentrations and treated with compounds or 0.25% DMSO and cultured at 37 °C for 7 days. Media is changed at day 4, viable cell numbers are restored to the original concentration and compounds are re-supplied. MTT cell proliferation assay kit is then employed, and plates are read for absorbance at 570 nm using a PHERAstar BMG microplate reader. Effect of this compound on expression level is assessed by Real-time quantitative PCR (qRT-PCR) after 6 days of incubation of compounds with cells, with media changed and compound re-supply at day 3. For cell differentiation studies, leukemia cells are treated with this chemical for 7 days, then harvested, washed and incubated with Pacific Blue rat anti-mouse CD11b antibody before being analyzed by flow cytometry.
Single-nucleus RNA sequencing reveals the specific molecular signatures of myeloid cells responding to brain injury after microglial replacement
[ Front Immunol, 2025, 16:1625673]
Combinatorial targeting of a chromatin complex comprising Dot1L, menin and the tyrosine kinase BAZ1B reveals a new therapeutic vulnerability of endocrine therapy-resistant breast cancer
[ Breast Cancer Res, 2022, 24(1):52]
Combinatorial targeting of menin and the histone methyltransferase DOT1L as a novel therapeutic strategy for treatment of chemotherapy-resistant ovarian cancer
[ Cancer Cell Int, 2022, 22(1):336]
RETURN POLICY
Selleck Chemical’s Unconditional Return Policy ensures a smooth online shopping experience for our customers. If you are in any way unsatisfied with your purchase, you may return any item(s) within 7 days of receiving it. In the event of product quality issues, either protocol related or product related problems, you may return any item(s) within 365 days from the original purchase date. Please follow the instructions below when returning products.
SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.
NOT FOR HUMAN, VETERINARY DIAGNOSTIC OR THERAPEUTIC USE.
