4-n-butyl resorcinol (4-nBR) is a highly effective tyrosinase inhibitor, and can be used in cosmetic product for depigmentation purpose. Its efficacy correlates with 4-nBR that absorbed by skin. In this study, skin distribution of 4-nBR within either human or pig skin ex vivo was studied and compared by three independent laboratories. Good agreement was observed in each compartment considering usual inter-lab variability. The percutaneous absorption and skin distribution studies were carried out by L'Oréal (lab A), Fudan University (lab B), and Medicilon (lab C).

Columbin is an important component isolated from Radix Tinosporae. Columbin possesses many pharmacological activities, including anti-inflammation, and antitumor activity in vivo. The purpose of the present study was to examine in vivo pharmacokinetics and bioavailability of Columbin in rats using a high-performance liquid chromatography coupled with tandem mass spectrometry quantitative detection method. This is the first study demonstrating the bioanalytical method and pharmacokinetic of Columbin. Animal studies were carried out in Medicilon.

Paclitaxel-loaded hyaluronan solid nanoemulsions (PTX-HSNs) were successfully fabricated for the delivery of PTX to improve ovarian cancer treatment via active tumor targeting. The in vivo toxicity, in vivo antitumor effects, and pharmacokinetics of PTX-HSNs and Taxol were evaluated in nude mice and rats. PTX-HSN is a highly effective nanosystem with a high maximum tolerated dose (MTD) for delivering PTX to ovarian cancers characterized by CD44 overexpression, enhanced active tumor targeting, and low toxicity. All in vivo experiments were conducted with the approval of the Association for Assessment and Accreditation of Laboratory Animal Care (AAALAC) International (tested at Medicilon/MPI Preclinical Research).

A simple and accurate liquid chromatography coupled with tandem mass spectrometry method was developed for determination and in vivo pharmacokinetic studies of vitexin rhamnoside in rat plasma. Practical utility of this new LC/MS/MS method was confirmed in pilot pharmacokinetic studies in rats following both intravenous and oral administration. Animal studies were carried out in Medicilon.

Liver cancer is the fourth greatest cause of cancer related mortality. AD80 is a multi-kinase inhibitor with anti-tumoral activity across a variety of hepatocellular carcinoma (HCC) preclinical models, including mouse xenografts. AD80 is highly active in a tumor xenograft model. Experimental dosing for AD80 was determined from maximum tolerated dosage (MTD) studies and pharmacokinetic (PK) analysis. Quantities of AD80 in blood plasma were determined by LC-MS/MS at Medicilon.

Suberoylanilide hydroxamic acid (SAHA), which is FDA approved for the treatment of cancer under the trade name Zolinza®, was effective in restoring memory performance in this Alzheimer's disease (AD) model. SAHA was synthesized by Medicilon and was given to mice as 50 mg/kg doses. Injections (10 mL/kg) were given intraperitoneally and were alternated daily between left and right sides of the abdomen. Chronic treatments of SAHA completely restored performance deficits in APP/PS1 mice.

The ubiquitin–proteasome system (UPS) comprises a network of enzymes that is responsible for maintaining cellular protein homeostasis. TAK-243 is a potent, mechanism-based small-molecule inhibitor of the ubiquitin activating enzyme (UAE), the primary mammalian E1 enzyme that regulates the ubiquitin conjugation cascade. TAK-243 has UAE-specific antitumor efficacy in vivo. Medicilon performed the experiment using the HCC70 (triple-negative breast cancer) model.

Age-related neurodegenerative disorders are characterized by the progressive accumulation of misfolded and aggregated proteins. SNARE protein ykt6 plays a crucial role in proteostasis and lysosomal function by enhancing hydrolase trafficking under stressful conditions. Activating ykt6 by small-molecule farnesyltransferase inhibitors (FTIs) restores lysosomal activity and reduces a-synuclein in patient-derived neurons and mice. Pharmacokinetic studies revealed that after a single oral dose, the FTI (LNK-754) was cleared from plasma within 20 hours and could rapidly cross the blood-brain-barrier. Pharmacokinetic analysis was performed as a service provided by Medicilon.

​Developing novel drugs that can abrogate the growth and metastasis of malignant tumors is a major challenge for cancer researchers. WYC-209, a synthetic retinoid, inhibits proliferation of malignant murine melanoma tumor-repopulating cells (TRCs). The enantiomers WYC-209A and WYC-209B exhibit similar TRC inhibition activities. The binding assay by surface plasmon resonance (SPR) analysis shows that WYC-209A and WYC-209B acid bind to RARs at nano-molar doses. SPR was carried out by Medicilon, using the Biacore 8K equipment.

ARD-2128 is a bona fide PROTAC androgen receptor (AR) degrader and strongly suppresses AR-regulated genes in a dose- and time-dependent manner in AR+ prostate cancer cell lines. ARD-2128 has excellent plasma and microsomal stability in all the five species (Human, Mouse, Rat, Dog, and Monkey). The in vitro stability and pharmacokinetic (PK) studies were performed by Medicilon.