| Added by | mollevi |
|---|---|
| Group name | PlateformeIPAM |
| Item Type | Journal Article |
| Title | Radiolabeled Antibodies Against Müllerian-Inhibiting Substance Receptor, Type II: New Tools for a Theranostic Approach in Ovarian Cancer |
| Creator | Deshayes et al. |
| Author | Emmanuel Deshayes |
| Author | Riad Ladjohounlou |
| Author | Pierre Le Fur |
| Author | Alexandre Pichard |
| Author | Catherine Lozza |
| Author | Vincent Boudousq |
| Author | Samuel Sevestre |
| Author | Marta Jarlier |
| Author | Roxana Kashani |
| Author | Joanna Koch |
| Author | Jane Sosabowski |
| Author | Julie Foster |
| Author | Nicolas Chouin |
| Author | Frank Bruchertseifer |
| Author | Alfred Morgenstern |
| Author | Pierre-Olivier Kotzki |
| Author | Isabelle Navarro-Teulon |
| Author | Jean-Pierre Pouget |
| Abstract | We have developed the 16F12 mouse monoclonal antibody (mAb), which targets the Müllerian-inhibiting substance receptor, type II (MISRII), expressed by ovarian tumors. Here, we assessed in preclinical models the possibility of using radiolabeled 16F12 in a theranostic approach for small-volume ovarian peritoneal carcinomatosis, such as after cytoreductive surgery. Methods: DOTA-, DTPA- or deferoxamine mesylate-conjugated 16F12 mAb was radiolabeled with ?-particle (177Lu) or ?-particle (213Bi) emitters for therapeutic use and with 89Zr for PET imaging. On the 13th postxenograft day, mice bearing intraperitoneal MISRII-positive AN3CA endometrial carcinoma cell xenografts were treated by conventional intraperitoneal radioimmunotherapy (IP-RIT) with 10 MBq of 177Lu-16F12 or 12.9 MBq of 213Bi-16F12 or by brief intraperitoneal radioimmunotherapy (BIP-RIT) using 50 MBq of 177Lu-16F12 or 37 MBq of 213Bi-16F12. For BIP-RIT, 30 min after injection of the radiolabeled mAbs, the peritoneal cavity was washed to remove the unbound radioactivity. The biodistribution of 177Lu- and 213Bi-16F12 mAbs was determined and then used for dose assessment. Hematologic toxicity was also monitored. Results: The 16F12 mAb was satisfactorily radiolabeled for both therapy and imaging. IP-RIT with 177Lu-16F12 was slightly more efficient in delaying tumor growth than IP-RIT with 213Bi-16F12. Conversely, 213Bi-16F12 was more efficient than 177Lu-16F12 in BIP-RIT. The biodistribution analysis showed that the tumor-to-blood uptake ratio was significantly higher with BIP-RIT than with IP-RIT for both 213Bi- and 177Lu-16F12. Hematologic toxicity was more pronounced with 177Lu-16F12 than with 213Bi-16F12. SPECT/CT images (after BIP-RIT with 177Lu-16F12) and PET/CT images (after injection of 89Zr-16F12 in the tail vein) showed focal uptake at the tumor site. Conclusion: Radiolabeled 16F12 could represent a new theranostic tool for small-volume ovarian peritoneal carcinomatosis. Specifically, 213Bi-16F12-based BIP-RIT could be proposed to selected patients as an alternative adjuvant treatment immediately after cytoreductive surgery. An anti-MISRII mAb is currently being used in a first-in-human study, thus making radiolabeled anti-MISRII mAbs a realistic theranostic option for the clinic. |
| Publication | Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine |
| Volume | 59 |
| Issue | 8 |
| Pages | 1234-1242 |
| Date | Aug 2018 |
| Journal Abbr | J. Nucl. Med. |
| Language | eng |
| DOI | 10.2967/jnumed.118.208611 |
| ISSN | 1535-5667 |
| Short Title | Radiolabeled Antibodies Against Müllerian-Inhibiting Substance Receptor, Type II |
| Library Catalog | PubMed |
| Extra | PMID: 29674421 |
| Tags | 177Lu, 213Bi, MISRII, original, ovarian, peritoneal carcinomatosis, radioimmunotherapy, targeted radiotherapy, theranostic |
| Date Added | 2019/06/04 - 16:53:04 |
| Date Modified | 2019/06/05 - 11:03:17 |
Institut de Recherche en Cancérologie de
