Novel orthotopic implantation model of human malignant pleural mesothelioma (EHMES-10 cells) highly expressing vascular endothelial growth factor and its receptor.
Malignant pleural mesothelioma (MPM) is closely related to exposure to asbestos, and a rapid increase in the number of MPM patients in Japan is estimated in the years 2010-2050. The purpose of the present study was to establish a clinically relevant animal model that shows human patient-like progression of MPM. Here, we demonstrate that a human MPM cell line (EHMES-10) inoculated orthotopically (thoracic cavity) into severe combined immunodeficiency (SCID) mice produces highly vascularized thoracic tumors with pleural dissemination and bloody pleural effusions by 5 weeks, suggesting a patient-like progression of this cell line after orthotopic inoculation. EHMES-10 cells overexpressed vascular endothelial growth factor (VEGF), a molecule responsible for malignant effusions, and its receptor. Treatment with cisplatin, but not gemcitabine, significantly inhibited the production of pleural effusions, but it was not effective for thoracic tumors, consistent with chemotherapy refractory characteristics of MPM in patients. Our patient-like orthotopic model using EHMES-10 cells overexpressing VEGF and its receptor may be useful for examining the molecular pathogenesis of MPM and may contribute to the development of novel treatment strategies for MPM.
Department of Internal Medicine and Molecular Therapeutics, University of Tokushima Graduate School, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
Emiko
E
Nakataki
Seiji
S
Yano
Yuka
Y
Matsumori
Hisatsugu
H
Goto
Soji
S
Kakiuchi
Hiroaki
H
Muguruma
Yoshimi
Y
Bando
Hisanori
H
Uehara
Hironobu
H
Hamada
Katsumi
K
Kito
Akihito
A
Yokoyama
Saburo
S
Sone
D000818:Animals; D000970:Antineoplastic Agents / Q000627:therapeutic use; D045744:Cell Line, Tumor; D002945:Cisplatin / Q000627:therapeutic use; D003841:Deoxycytidine / Q000031:analogs & derivatives / Q000627:therapeutic use; D004195:Disease Models, Animal; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008654:Mesothelioma / Q000188:drug therapy / Q000378:metabolism* / Q000473:pathology; D051379:Mice; D016513:Mice, SCID; D009368:Neoplasm Transplantation; D010997:Pleural Neoplasms / Q000188:drug therapy / Q000378:metabolism* / Q000473:pathology; D040262:Receptors, Vascular Endothelial Growth Factor / Q000096:biosynthesis*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D042461:Vascular Endothelial Growth Factor A / Q000096:biosynthesis*; D000093542:Gemcitabine
D000970:Antineoplastic Agents; D042461:Vascular Endothelial Growth Factor A; D003841:Deoxycytidine; D040262:Receptors, Vascular Endothelial Growth Factor; D002945:Cisplatin; D000093542:Gemcitabine