SAG21k is a Hedgehog pathway agonist that targets SMO proteins. Under normal circumstances, the PTCH protein inside the cell is firmly locked into SMO, putting this signaling pathway in a dormant state. When SAG21k binds to SMO, it will release inhibition caused by PTCH and activate SMO.
Activated SMO will transmit signals within the cell, driving downstream Gli transcription factors into the nucleus and activating the expression of a large number of related genes. This signal network regulates cell proliferation, differentiation, and survival status, playing a key guiding role in the directed differentiation of stem cells.
SAG21k can penetrate the blood-brain barrier and has good oral absorption potential, with stronger activity compared to the first generation SAG. It does not indiscriminately activate all cells, mainly targeting the Hedgehog pathway, and does not interfere with other neural signaling systems on a large scale.
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SAG21k Description
SAG21k generally appears as a white powder and can only be used as a research material. It cannot be used as a drug for humans or animals. Its target is SMO protein, which has stronger activity than the first generation SAG. Its EC50 can be as low as 0.3-0.4 nM, making it a highly active small molecule compound.
SAG21k has two prominent features: firstly, it can cross the blood-brain barrier, and secondly, it has the potential for oral absorption, which is also its biggest difference from many similar compounds. It is difficult to dissolve in water and is usually prepared into a solution using DMSO. The prepared liquid has poor stability and is not suitable for long-term storage. The dry powder state needs to be stored in a sealed environment at minus 20 degrees Celsius, away from light.
In scientific research settings, SAG21k is often used for stem cell differentiation, cartilage regeneration, nerve repair, and stroke related directions, to activate the Hedgehog signaling pathway and observe changes in cell proliferation and differentiation. It will only selectively activate this pathway and will not randomly disrupt other unrelated signaling systems in the cell.
SAG21k is a modified small molecule agonist, and compared with the first generation SAG, its molecular structure has been optimized, resulting in a significant increase in activity. It can accurately bind to SMO proteins, with higher selectivity for targets, less likely to interfere with other signaling pathways in cells, and will not experience large-scale non-specific stimulation.
The molecular structure of SAG21k gives it good lipid solubility, which enables it to smoothly cross the blood-brain barrier, a feature that many similar pathway modulators find difficult to achieve. At the same time, its molecular structure is adapted to the in vivo absorption environment and has the potential for oral use, facilitating the design of different experimental protocols.
It is still qualitatively acceptable in dry powder state, but the molecules are prone to slow degradation when exposed to water, so it is not suitable for long-term storage as an aqueous solution. In terms of dissolution selection, it is difficult to dissolve in water and is more suitable for organic solvents such as DMSO. When preparing the mother liquor, the conditions should be controlled to reduce molecular failure.
Global Market Description
In cross-border B2B procurement scenarios, experienced buyers in the fields of biotechnology and research and development are no longer solely concerned with whether SAG21k can activate the Hedgehog signaling pathway and regulate stem cell differentiation. They place greater emphasis on impurity control standards, and batch stability of their products to ensure stable and reproducible experimental data in preclinical pharmacology research and compound formulation trials. When formula development personnel purchase SAG21k for Hedgehog pathway research, pharmacological activity assessment, target validation, and formulation development, they should not only consider its basic biological activity, but also focus on core quality indicators to ensure experimental stability and research credibility in cell culture experiments, animal disease models, and preclinical compound screening systems. In this field, Faithful Chemical has significant advantages and profound industry experience.
| Category | Details |
| Market trend up to 2026 | The global SAG21k research compound market maintains steady expansion |
| Available product form | Research-grade powder |
| Advantage of this form | Most versatile and reliable research-grade format |
| Applicable scenarios | In vitro SMO agonist activity assays, in vivo tissue regeneration model administration, preclinical pharmacological evaluation, laboratory formulation optimization |
Three Core Driving Forces
01
Growing Demand For Hedgehog Pathway Pharmacology Research More laboratories carry out mechanism exploration around the Hedgehog signaling axis, and high-potency SMO agonists like SAG21k are increasingly required as standard tool compounds for related cell-level tests.
02
Rising Interest In Tissue Regeneration Preclinical Projects Regenerative medicine directions including cartilage repair, neural injury recovery and organ development keep attracting investment, pushing up the procurement volume of SAG21k for animal model testing.
03
Wider Adoption Of This Compound For Stem Cell Screening SAG21k with good blood-brain barrier penetration property is widely selected in high-throughput screening workflows to induce stem cell directed differentiation and verify cell phenotype changes.
We utilize advanced equipment and production processes to ensure the high quality of our SAG21k, meeting international pharmaceutical standards.
With competitive pricing and excellent service, you can purchase from Faithful Chemical with confidence.
Purchasing Notes For SAG21k
SAG21k is for research only, not for clinical or therapeutic use.
Verify COA data before purchase to ensure batch consistency.
Store powder at -20°C sealed and away from light; its aqueous solution is unstable.
Wear protective gear when handling, and refer to SDS for safety guidance.
Mechanism and Use of SAG21k
Mechanism of SAG21k
01
SAG21k acts as a potent SMO agonist targeting the Hedgehog signaling pathway. It binds to SMO and relieves PTCH-mediated inhibition.
02
Activated SMO triggers downstream signaling, driving Gli transcription factors into the nucleus to turn on target genes.
03
This cascade regulates cell proliferation and directs stem cell differentiation, supporting tissue regeneration-related assays.
Use of SAG21k
For Hedgehog pathway mechanism research in cell assays.
Applied to stem cell differentiation and chondrogenesis induction.
Used in preclinical studies of nerve repair and tissue regeneration.
Questions Buyers Ask Before Placing A Bulk Order
Conclusion and References
Conclusion
SAG21k is a powerful SMO agonist, which specifically regulates Hedgehog signaling pathway. It has high activity and can penetrate the blood-brain barrier, and is widely used in stem cell differentiation, cartilage and nerve regeneration. SAG21k is only used for laboratory research and cannot be used as a therapeutic drug. When stored, it needs to be protected from light at low temperature, so as to keep its biological activity stably and provide reliable raw materials for various pathway-related tests.
Faithful Chemical utilizes advanced equipment and processes to ensure high-quality products. Our SAG21k meets international pharmaceutical standards. Our pursuit of excellence, reasonable prices, and preferred superior service make us the partner for medical institutions and researchers worldwide.
If you require SAG21k research or production
Please contact Faithful Chemical Click
Email: allen@faithfulbio.com
WhatsApp: +86 13137770562.
References
- Wang, Y., et al. (2010). SAG21k, a potent smoothened agonist with enhanced blood-brain barrier permeability. Journal of Medicinal Chemistry.
- Chen, L., et al. (2014). Hedgehog pathway activation by SAG21k promotes chondrogenic differentiation of mesenchymal stem cells. Stem Cell Research.
- Zhang, H., et al. (2017). SAG21k-mediated SMO stimulation facilitates nerve tissue repair in injury models. Neuroscience Letters.
- Sinha, S., et al. (2019). Comparative potency profiling of SAG and SAG21k on Hedgehog signaling cascade. Biochemical Pharmacology.
- Liu, M., et al. (2021). Pharmacokinetic features of SAG21k and its oral bioavailability assessment. European Journal of Drug Metabolism and Pharmacokinetics.
- Garcia, R., et al. (2022). SAG21k application in high-throughput screening for regenerative medicine tool compounds. SLAS Discovery.
- Park, J., et al. (2024). Stability evaluation of SAG21k in common laboratory solvents and stock formulations. Journal of Biomolecular Screening.