Abstract:
:In female nude mice, epidermal growth factor (EGF) was present at a mean concentration of 42.8 +/- 16.9 (SD) ng/mg wet tissue in the submandibular gland and 0.28 +/- 0.13 ng/ml in the plasma. Sialoadenectomy (removal of the submandibular glands) decreased circulating EGF to undetectable levels (less than 0.1 ng/ml). The possible role of EGF in transplantation and growth of mouse mammary tumors in nude mice was examined by sialoadenectomy, anti-EGF treatment, and EGF replacement therapy. The success rate of transplantation of a spontaneous mouse mammary tumor into nude mice was 55% in normal females and 17% in sialoadenectomized animals. Anti-EGF treatment of sialoadenectomized mice completely abolished the implantation of the tumor. Daily administration of EGF at a dose of 5 micrograms per mouse to both normal and sialoadenectomized animals enhanced the success rate of tumor implantation to more than 80%. Sialoadenectomy and/or anti-EGF treatment of tumor-bearing nude mice reduced the growth of implanted mammary tumors. These results suggest that EGF is important for implantation and growth of spontaneous mouse mammary tumor in female nude mice.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Tsutsumi O,Tsutsumi A,Oka Tsubject
Has Abstractpub_date
1987-09-01 00:00:00pages
4651-3issue
17eissn
0008-5472issn
1538-7445journal_volume
47pub_type
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