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DC67120 · Updated 24 October 2026

YSK12-C4 (YSK12-MEND)
Formulation & Performance

This edition organizes the previously reviewed, source-linked product record. It is not a new independent review of every paper or supporting file. Reported and calculated values retain their original labels.

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Literature-reported formulation composition

ComponentReported molar ratioRole
YSK12-C485Ionizable lipid
Cholesterol15Sterol
PEG-DMG1PEG lipid
Reported ratio sumNot reportedOriginal ratio retained
Formulation calculator unavailable. The supplied article does not report the complete molar composition, so a formulation weight calculation is not available. Obtain and verify the complete composition and component molecular weights before planning component quantities.
Not reported in the cited article
Diameter and zeta potential measured in 10 mM HEPES, pH 7.4; transfection in serum-free Opti-MEM I for 2 h at 37 °C.
GAPDH siRNA (siGAPDH), control siRNA (siCtl), or Cy5-labeled siRNA.
In-vitro transfection; no animal administration in this paper.
siRNA 1–30 nM for gene-silencing and uptake experiments; 1–100 nM for cytotoxicity testing.
Human Jurkat, THP-1, KG-1 and NK92 cell lines.
YSK12-C4, cholesterol and PEG-DMG were dissolved in 90% (v/v) tert-butanol; 200 µL aqueous siRNA solution was gradually added to 400 µL lipid solution and the mixture was diluted with HEPES buffer. The article states preparation was according to a previous method.

Literature-reported performance for the cited formulation

Literature-reportedMaximum 96%Jurkat cells, 1–30 nM siRNA · RNAiMAX maximum 37%p. 2 (PDF p. 2), Fig. 1a
Literature-reportedMaximum 96%THP-1 cells, 1–30 nM siRNA · RNAiMAX maximum 56%p. 2 (PDF p. 2), Fig. 1b
Literature-reportedMaximum 91%KG-1 cells, 1–30 nM siRNA · RNAiMAX maximum 43%p. 2 (PDF p. 2), Fig. 1c
Literature-reportedMaximum 75%NK92 cells, 1–30 nM siRNA · RNAiMAX maximum 19%p. 2 (PDF p. 2), Fig. 1d
Literature-reportedNo statistically significant cytotoxicity in Jurkat and THP-1 over the tested range; significant effects at higher doses in KG-1 and NK92WST-1, 1–100 nM siRNA · Untreated cellsp. 3 (PDF p. 3), Fig. 2

Additional reported findings

Non-aggregability

YSK12-MEND particle size remained stable in Opti-MEM I, whereas RNAiMAX aggregated substantially under the same medium conditions.

· pp. 5–6 (PDF pp. 5–6), Fig. 5.
Literature Data DisclaimerAll formulation parameters and performance values shown in this section are derived from the cited publication and are provided for reference only. These results were obtained using the specific materials, formulation process, cargo, dose, analytical method, model and administration route described in that study. Unless otherwise stated, the data were not generated or independently verified by DC Chemicals. DC Chemicals supplies the lipid compound only and does not guarantee that customers will reproduce the reported LNP properties or biological performance.

The administration route shown above was used in the cited study and is not a clinical-use instruction or recommendation by DC Chemicals.
Cited literature for this formulation and performance datasetNakamura T, Kuroi M, Fujiwara Y, Warashina S, Sato Y, Harashima H. Small-sized, stable lipid nanoparticle for the efficient delivery of siRNA to human immune cell lines. Scientific Reports. 2016;6:37849. DOI: 10.1038/srep37849
All formulation and performance values are specific to the cited YSK12-MEND preparation, cargo, cell lines and comparator conditions.

Scientific Reports full text