Radiosynthesis and PET Bioimaging of 76Br-Bedaquiline in a Murine Model of Tuberculosis

Alvaro A. Ordonez, Laurence S. Carroll, Sudhanshu Abhishek, Filipa Mota, Camilo A. Ruiz-Bedoya, Mariah H. Klunk, Alok K. Singh, Joel S. Freundlich, Ronnie C. Mease, Sanjay K. Jain

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2 Scopus citations


Bedaquiline is a promising drug against tuberculosis (TB), but limited data are available on its intralesional pharmacokinetics. Moreover, current techniques rely on invasive tissue resection, which is difficult in humans and generally limited even in animals. In this study, we developed a novel radiosynthesis for 76Br-bedaquiline and performed noninvasive, longitudinal whole-body positron emission tomography (PET) in live, Mycobacterium tuberculosis-infected mice over 48 h. After the intravenous injection, 76Br-bedaquiline distributed to all organs and selectively localized to adipose tissue and liver, with excellent penetration into infected lung lesions (86%) and measurable penetration into the brain parenchyma (15%). Ex vivo high resolution, two-dimensional autoradiography, and same section hematoxylin/eosin and immunofluorescence provided detailed intralesional drug biodistribution. PET bioimaging and high-resolution autoradiography are novel techniques that can provide detailed, multicompartment, and intralesional pharmacokinetics of new and existing TB drugs. These technologies can significantly advance efforts to optimize drug dosing.

Original languageEnglish (US)
Pages (from-to)1996-2002
Number of pages7
JournalACS Infectious Diseases
Issue number12
Publication statusPublished - Dec 13 2019


All Science Journal Classification (ASJC) codes

  • Infectious Diseases


  • PET
  • TB meningitis
  • autoradiography
  • pharmacokinetics
  • pulmonary

Cite this

Ordonez, A. A., Carroll, L. S., Abhishek, S., Mota, F., Ruiz-Bedoya, C. A., Klunk, M. H., ... Jain, S. K. (2019). Radiosynthesis and PET Bioimaging of 76Br-Bedaquiline in a Murine Model of Tuberculosis. ACS Infectious Diseases, 5(12), 1996-2002.