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Binding and interna...
Binding and internalization of 177Lu-octreotate in human tumor cell lines of different origin
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- Saadati, Sofia, 1992 (författare)
- Gothenburg University,Göteborgs universitet,Sahlgrenska Cancer Center,Institutionen för kliniska vetenskaper, Avdelningen för radiofysik,Institute of Clinical Sciences, Department of Radiation Physics
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- Spetz, Johan (författare)
- Gothenburg University,Göteborgs universitet,Sahlgrenska Cancer Center,Institutionen för kliniska vetenskaper, Avdelningen för radiofysik,Institute of Clinical Sciences, Department of Radiation Physics
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- Sandblom, Viktor, 1987 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för radiofysik,Sahlgrenska Cancer Center,Institute of Clinical Sciences, Department of Radiation Physics
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- Schüler, Emil (författare)
- Gothenburg University,Göteborgs universitet,Sahlgrenska Cancer Center,Institutionen för kliniska vetenskaper, Avdelningen för radiofysik,Institute of Clinical Sciences, Department of Radiation Physics
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- Palmer, Ruth H., 1970 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för medicinsk kemi och cellbiologi,Institute of Biomedicine, Department of Medical Biochemistry and Cell Biology
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- Hallberg, Bengt, 1956 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för medicinsk kemi och cellbiologi,Institute of Biomedicine, Department of Medical Biochemistry and Cell Biology
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- Helou, Khalil, 1966 (författare)
- Gothenburg University,Göteborgs universitet,Sahlgrenska Cancer Center,Institutionen för kliniska vetenskaper, Avdelningen för onkologi,Institute of Clinical Sciences, Department of Oncology
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- Forssell-Aronsson, Eva, 1961 (författare)
- Gothenburg University,Göteborgs universitet,Sahlgrenska Cancer Center,Institutionen för kliniska vetenskaper, Avdelningen för radiofysik,Institute of Clinical Sciences, Department of Radiation Physics
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visa färre...
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(creator_code:org_t)
- 2017
- 2017
- Engelska.
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Ingår i: 63rd Annual Meeting of the Radiation Research Society, Cancun, Mexico.
- Relaterad länk:
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https://gup.ub.gu.se...
Abstract
Ämnesord
Stäng
- Peptide Receptor Radionuclide Therapy (PRRT) with 177Lu-octreotate is used for systemic treatment of patients with somatostatin receptor (SSTR)-expressing neuroendocrine tumors (NETs), mainly for small-intestine NETs and endocrine pancreatic tumors. Further research is needed to evaluate the possibility of using this type of treatment in patients with other SSTR-expressing tumors. Tumor binding and uptake of the radiopharmaceutical is highly dependent on SSTR expression. In order to determine the potential of using 177Lu-octreotate for treatment of other tumor cell lines, in vitro studies of binding and internalization are needed. The aim of this study was to asses binding and internalization of 177Lu-octreotate in various cancer cell lines and compare with our previous results. In vitro studies were performed on neuroblastoma (CLB-BAR, IMR-32), lung adenocarcinoma (h1975, h2228) and invasive breast carcinoma (BT474, MCF-7, MDA-MB-231, MDA-MB-361, T47D, ZR-75-1) cell lines. Cell cultures were incubated with low or high amounts of 177Lu-octreotate. To block SSTR and thereby determine the specific uptake, control groups were incubated with 177Lu-octreotate and excess octreotide. The amount of unbound, membrane-bound, and internalized 177Lu in each sample was determined after 24 h. Several of the studied tumor cell lines showed specific binding of 177Lu-octreotate. The highest binding and internalization after 24 h was seen for the neuroblastoma cell lines IMR-32 (58% internalized, 9.4% membrane-bound) and CLB-BAR (26% internalized, 3.4% membrane-bound). Specific binding was also found in some breast cancer cell lines (e.g. 3.1% internalized, 0.5% membrane-bound in MDA-MB-361). No specific binding was found in lung adenocarcinoma. In comparison with our previous findings in NET and NET-like cell lines, these results indicate that SSTR-based PRRT may be a potential treatment option for patients with neuroblastoma and certain types of breast cancer. Promising results showing specific tumor uptake of 177Lu-octreotate were obtained for SSTR-expressing tumor cell lines in vitro, indicating the possibility of using SSTR-based diagnostic and therapeutic regimes on more tumor types than those in current clinical practice.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cancer and Oncology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Radiologi och bildbehandling (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Radiology, Nuclear Medicine and Medical Imaging (hsv//eng)
Publikations- och innehållstyp
- vet (ämneskategori)
- kon (ämneskategori)
- Av författaren/redakt...
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Saadati, Sofia, ...
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Spetz, Johan
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Sandblom, Viktor ...
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Schüler, Emil
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Palmer, Ruth H., ...
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Hallberg, Bengt, ...
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visa fler...
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Helou, Khalil, 1 ...
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Forssell-Aronsso ...
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visa färre...
- Om ämnet
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- MEDICIN OCH HÄLSOVETENSKAP
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MEDICIN OCH HÄLS ...
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och Klinisk medicin
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och Cancer och onkol ...
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- MEDICIN OCH HÄLSOVETENSKAP
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MEDICIN OCH HÄLS ...
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och Klinisk medicin
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och Radiologi och bi ...
- Artiklar i publikationen
- 63rd Annual Meet ...
- Av lärosätet
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Göteborgs universitet