Five tissue antigens have been identified which appear in carcinoma arising in the ovary. Antisera to a variety of human tissues were absorbed with a saline extract of normal ovary as well as plasma; five distinct antigens (A1-A4, TA) were detected in ovarian tumor extracts as well as in normal tissues. Al, A2, and A3 were widely distributed in normal tissues while A4 was found principally in buffy coat blood cells and spleen, and TA was mainly associated with normal cervix but was variably detected in liver and lung. Heating the tumor extract to 56° resulted in inactivation of Al, A2, and A3. A4 was inactivated at 80°, whereas TA was stable at 100°. Pronase treatment readily abolished A3 activity, more slowly inactivated Al, A2, and A4, and only very slowly destroyed TA. Partial separation of the antigens was obtained by Sephadex G-200 chromatography. TA from individual benign and malignant tumors as well as normal cervix appears to be the same molecule by criteria of immunodiffusion, Immunoelectrophoresis, and gel filtration. The potential use of these antigens as tracers of ovarian carcinoma is indicated.
Thermostable antigen (TA) occurs in ovarian carcinoma and in certain specialized tissues. High titers of TA were found in nineteen of twenty endocervical extracts but not in myometrium, endometrium, or exocervix. TA was present in all of sixteen cervical mucus samples. Antibodies to perchloric acid extract of bronchus showed cross-reactivity with TA from ovarian carcinoma and cervix. Immunofluorescence with frozen sections revealed TA to be present in the columnar epithelium of ovarian neoplasms, and endocervical glands, in bronchial seromucous glands and in hepatic bile canaliculi.Immunofluorescence and immunodiffusion were used to test for cancer patient antibodies against TA. All sera tested negative. An immunofluorescence inhibition test for circulating TA also tested negative in sera of ovarian and cervical cancer patients.
Es sind fünf Gewebsantigene identifiziert worden, die in einem Ovarialkarzinom auftreten. Antisera gegen eine Reihe von menschlichen Geweben wurden zusammen mit einem Kochsalzextrakt sowohl vom normalen Ovar als auch vom Plasma absorbiert; fünf verschiedene Antigene (A1-A4, TA) wurden sowohl in Extrakten von Ovarialtu-moren als auch in normalen Geweben nachgewiesen. Al, A2 und A3 waren in normalen Geweben weit verbreitet, während A4 haupt-sächlich im Blut- und Milz-Leukozytenfilm (buffy coat) gefunden wurde. TA kam vorwiegend in der normalen Zervix vor, aber auch in unterschiedlicher Weise in der Leber und der Lunge. Die Erwärmung des Tumorextraktes auf 56° führte zur Inaktivierung von Al, A2 und A3. A4 wurde bei 80° inaktiviert, während TA bei 100° stabil war. Eine Pronasebehandlung hob die A3-Aktivität rasch auf, während die Inaktivierung von Al, A2 und A4 langsamer ablief und die Zerstörung von TA sehr langsam vonstatten ging. Eine teilweise Trennung der Antigene wurde durch eine Sephadex-G-200-Chromatographie erreicht. TA sowohl von individuellen gut- und bösartigen Tumoren als auch von normaler Zervix scheint aufgrund der Immundiffusion, Immunelektrophorese und Gelfiltration das gleiche Molekül zu sein. Auf die potentielle Verwendung dieser Antigene zur Erkennung von Ovarialkarzinomen wird hingewiesen.
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