Title:Micro-fragmented Fat Inhibits the Progression of Human Mesothelioma
Xenografts in Mice
Volume: 23
Issue: 8
Author(s): Silvia La Monica, Valentina Coccé, Mara Bonelli*, Giulio Alessandri, Roberta Alfieri, Costanza Annamaria Lagrasta, Caterina Frati, Lisa Flammini, Aldo Gianni, Francesco Petrella, Francesca Paino and Augusto Pessina
Affiliation:
- Department of Medicine and Surgery, University of Parma, Via Gramsci 14, Parma, 43126, Italy
Keywords:
Mesothelioma, micro-fragmented fat, mesenchymal stromal cells, paclitaxel, xenograft, adipose tissue.
Abstract:
Background: Malignant pleural mesothelioma is a pathology with no effective therapy and
a poor prognosis. Our previous study demonstrated an in vitro inhibitory effect on mesothelioma cell
lines of both the lysate and secretome of adipose tissue-derived Mesenchymal Stromal Cells. The inhibitory
activity on tumor growth has been demonstrated also in vivo: five million Mesenchymal Stromal
Cells, injected “in situ”, produced a significant therapeutic efficacy against MSTO-211H xenograft
equivalent to that observed after the systemic administration of paclitaxel.
Objective: The objective of this study is to evaluate the efficacy of low amount (half a million) Mesenchymal
Stromal Cells and micro-fragmented adipose tissues (the biological tissue from which the Mesenchymal
Stromal Cells were isolated) on mesothelioma cells growth.
Methods: Tumor cells growth inhibition was evaluated in vitro and in a xenograft model of mesothelioma.
Results: The inhibitory effect of micro-fragmented fat from adipose-tissue has been firstly confirmed
in vitro on MSTO-211H cell growth. Then the efficacy against the growth of mesothelioma xenografts
in mice of both micro-fragmented fat and low amount of Mesenchymal Stromal Cells has been evaluated.
Our results confirmed that both Mesenchymal Stromal Cells and micro-fragmented fat, injected
“in situ”, did not stimulate mesothelioma cell growth. By contrast, micro-fragmented fat produced a
significant inhibition of tumor growth and progression, comparable to that observed by the treatment
with paclitaxel. Low amount of Mesenchymal Stromal Cells exerted only a little anticancer activity.
Conclusion: Micro-fragmented fat inhibited mesothelioma cell proliferation in vitro and exerted a significant
control of the mesothelioma xenograft growth in vivo.