Details

Autor(en) / Beteiligte

• Ng, Mei Ying
• Song, Zhi Jian
• Venkatesan, Gopalakrishnan
• Rodriguez-Cuenca, Sergio
• West, James A
• Yang, Shili
• Tan, Choon Hong
• Ho, Paul Chi-Lui
• Griffin, Julian L
• Vidal-Puig, Antonio
• Bassetto, Marcella
• Hagen, Thilo

Titel

Conjugating uncoupler compounds with hydrophobic hydrocarbon chains to achieve adipose tissue selective drug accumulation

Ist Teil von

• Scientific reports, 2024-02, Vol.14 (1), p.4932-4932, Article 4932

Ort / Verlag

England: Nature Publishing Group

Erscheinungsjahr

2024

Quelle

EZB-FREE-00999 freely available EZB journals

Beschreibungen/Notizen

• One potential approach for treating obesity is to increase energy expenditure in brown and white adipose tissue. Here we aimed to achieve this outcome by targeting mitochondrial uncoupler compounds selectively to adipose tissue, thus avoiding side effects from uncoupling in other tissues. Selective drug accumulation in adipose tissue has been observed with many lipophilic compounds and dyes. Hence, we explored the feasibility of conjugating uncoupler compounds with a lipophilic C8-hydrocarbon chain via an ether bond. We found that substituting the trifluoromethoxy group in the uncoupler FCCP with a C8-hydrocarbon chain resulted in potent uncoupling activity. Nonetheless, the compound did not elicit therapeutic effects in mice, likely as a consequence of metabolic instability resulting from rapid ether bond cleavage. A lipophilic analog of the uncoupler compound 2,6-dinitrophenol, in which a C8-hydrocarbon chain was conjugated via an ether bond in the para-position (2,6-dinitro-4-(octyloxy)phenol), exhibited increased uncoupling activity compared to the parent compound. However, in vivo pharmacokinetics studies suggested that 2,6-dinitro-4-(octyloxy)phenol was also metabolically unstable. In conclusion, conjugation of a hydrophobic hydrocarbon chain to uncoupler compounds resulted in sustained or improved uncoupling activity. However, an ether bond linkage led to metabolic instability, indicating the need to conjugate lipophilic groups via other chemical bonds.