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SAH-SOS1A TFA is a peptide-based SOS1/KRAS protein interaction inhibitor. SAH-SOS1A TFA binds to wild-type and mutant KRAS (G12D, G12V, G12C, G12S, and Q61H) with nanomolar affinity (EC50=106-175 nM) and directly and independently blocks nucleotide association. SAH-SOS1A TFA (0.625-40 μM; 24 hours) dose-responsively impairs the viability of cancer cells bearing G12D, G12C, G12V, G12S, G13D, and Q61H mutations with IC50 values in the 5- to 15-μM range. Cancer cells expressing wild-type KRAS, such as HeLa and Colo320-HSR cells, are similarly affected.
In vivo, SAH-SOS1A (0.2 μL of 10 mM solution; injection; 48 hours; abdomens of D. melanogaster Ras85DV12/ActinGS) treatment notably decreases the phosphorylation state of ERK1/2.
Sequence: Arg-Arg-Phe-Phe-Gly-Ile-Aaa-Leu-Thr-Asn-Aaa-Leu-Lys-Thr-Glu-Glu-Gly-Asn (Covalent bridge: Aaa7-Aaa11)
| Molecular Weight | 2301.55 |
| Formula | C102H160N27F3O30 |
| CAS Number | 1652561-87-9 (free base) |
| Storage | -20°C, protect from light, sealed |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
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| BI-0474
BI-0474 is a covalent KRASG12C inhibitor. The IC50 value for GDP-KRAS::SOS1 protein-protein interaction was 7.0 nM. BI-0474 also showed better antitumor activity in non-small cell lung cancer xenograft models. |
| MRTX849 acid
MRTX849 acid can be used to synthesize PROTAC LC-2. LC-2 is a potent, first-in-class PROTAC capable of degrading endogenous KRAS G12C (DC50, between 0.25 and 0.76 μM). |
| BDP9066
BDP9066 is a potent and selective MRCK inhibitor, reducing substrate phosphorylation. |
| ASP2453
ASP2453 is a potent, selective and covalent inhibitor of KRAS G12C. ASP2453 inhibits Son of Sevenless (SOS)-mediated interactions between KRAS G12C and Raf with an IC50 value of 40 nM. |
| AZD4625
AZD4625 is a highly potent, selective, covalent and metabotropic inhibitor of the mutant GTPase KRASG12C. AZD4625 has high oral bioavailability. It is being developed to study advanced solid malignancies. |
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