title: Canine heat shock protein 27 promotes proliferation, migration, and doxorubicin resistance in the canine cell line DTK-F.
abstract: Canine mammary tumors (CMTs) are the most common type of tumors in female dogs. Heat shock proteins are highly expressed in many cancers and are involved in tumor progression and chemoresistance in CMTs; however, the biological role of canine heat shock protein 27 (cHSP27) in CMTs has not been thoroughly characterized. This study investigated the roles of cHSP27 in cell growth, migration, anchorage, and resistance to doxorubicin (DOX) using DTK-F cells, a CMT cell line that does not express cHSP27. DTK-F cells were transfected with cHSP27 and stable overexpression was established. A mouse monoclonal antibody against cHSP27 was also produced. The biological functions of cHSP27 in DTK-F cells were then evaluated using a variety of assays. Overexpression of cHSP27 was associated with increased cell proliferation, clone formation, migration, and decreased DOX sensitivity. In conclusion, these data provide evidence that cHSP27 overexpression can promote anchorage-independent growth, migration, and increased DOX resistance in CMT cells.
authors.affiliation: Department of Biotechnology and Animal Science, National Ilan University, Yilan, Taiwan.
authors.forename: An-Ci
authors.initials: AC
authors.lastname: Lin
authors.affiliation: Department of Biotechnology and Animal Science, National Ilan University, Yilan, Taiwan.
authors.forename: Cheng-Wei
authors.initials: CW
authors.lastname: Liao
authors.affiliation: Department of Nursing, Cardinal Tien College of Healthcare and Management, Sindian, Taiwan.
authors.forename: Sui-Wen
authors.initials: SW
authors.lastname: Lin
authors.affiliation: Department of Nursing, Chang Gung University of Science and Technology, Taoyuan, Taiwan.
authors.forename: Chien-Yi
authors.initials: CY
authors.lastname: Huang
authors.affiliation: Department of Nursing, Chang Gung University of Science and Technology, Taoyuan, Taiwan; Research Center for Industry of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan.
authors.forename: Chian-Jiun
authors.initials: CJ
authors.lastname: Liou
authors.affiliation: Department of Biotechnology and Animal Science, National Ilan University, Yilan, Taiwan. Electronic address: yslai@niu.edu.tw.
authors.forename: Yu-Shen
authors.initials: YS
authors.lastname: Lai
mesh_terms: D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000494:pharmacology; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects*; D049109:Cell Proliferation / Q000187:drug effects*; D004283:Dog Diseases / Q000378:metabolism; D004285:Dogs; D004317:Doxorubicin / Q000494:pharmacology*; D019008:Drug Resistance, Neoplasm / Q000187:drug effects*; D005260:Female; D055551:HSP27 Heat-Shock Proteins / Q000235:genetics / Q000378:metabolism*; D015674:Mammary Neoplasms, Animal / Q000378:metabolism; D051379:Mice; D010802:Phylogeny; D013154:Spleen / Q000166:cytology
chemical_list: D000903:Antibiotics, Antineoplastic; D055551:HSP27 Heat-Shock Proteins; D004317:Doxorubicin
keywords: Canine; Drug resistance; Heat shock protein 27; Mammary tumors; Oncology