Age-dependent cell inactivation by vincristine alone or in combination with 1-propargyl-5-chloropyrimidin-2-one.

نویسنده

  • E Wibe
چکیده

Inactivating effects caused by vincristine alone or in combination with another mitotic inhibitor, 1-propargyl-5-chloropyrimidin-2-one, were studied as loss of colony-forming ability in exponentially growing or synchronized populations of the human cell line NHIK 3025. Treatment with 4 ng vincristine per ml(4.3 nM) in G2 led to irreversible mitotic arrest. Both mitotic arrest and lethal damage due to vincristine were primarily induced when cells were exposed in late S and G2, suggesting a correlation between the cell cycle-inhibitory and inactivating effect of this drug at clinically relevant concentrations. No repair of sublethal damage after vincristine treatment could be detected within 5 hr. A common feature in the age response of NHIK 3025 cells to the two mitotic inhibitors is drug resistance in G1. However, while mitosis is the most sensitive stage in the cycle with respect to inactivation by 1-propargyl-5-chloropyrimidin-2-one, mitotic cells are relatively resistant to treatment with vincristine. The combined inactivating effect of vincristine and 1-propargyl-5-chloropyrimidin-2-one was purely additive during interphase. In mitosis, the two drugs demonstrated a striking synergistic effect.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Inhibitory effects of the new mitotic inhibitor 5-chloropyrimidin-2-one and of vincristine on human cells in vitro.

By means of time-lapse microcinematography, metaphase arrest was studied in synchronized NHIK 3025 cells in contact with 5-chloropyrimidin-2-one (NY 3000) or vincristine. A dose-dependent prolongation of mitosis was found for both substances, and the fraction of cells able to escape mitotic arrest declined gradually as the concen tration of NY 3000 or vincristine was increased. Significant prol...

متن کامل

Artemether effect and its interaction with vincristine and doxorubicin on human breast carcinoma MCF-7 cells

Introduction: For thousands of years, plants have been used as the main source of drug worldwide. Recently, it has been found out that the plant Artemisia annua and especially its derivatives such as artemether have anticancer properties. Methods: In this study, the anticancer effect of artemether on MCF-7 breast cancer cell line was examined. MTT assay was used to assess the viability of c...

متن کامل

In-Vitro Anti-Proliferative and Pro-Apoptotic Properties of Sutureja Khuzestanica on Human Breast Cancer Cell Line (MCF-7) and Its Synergic Effects with Anticancer Drug Vincristine

Satureja khuzestanica Jamzad (Marzeh Khuzestani in Persian) is an endemic plant that iswidely distributed in the southern part of Iran. Despite the number of papers published on thisplant, no one has focused on its anticancer effects. Therefore, the present study was designedto investigate the selective cytotoxic and anti-proliferative properties of satureja khuzestanicatotal extract (SKE). MCF...

متن کامل

In-Vitro Anti-Proliferative and Pro-Apoptotic Properties of Sutureja Khuzestanica on Human Breast Cancer Cell Line (MCF-7) and Its Synergic Effects with Anticancer Drug Vincristine

Satureja khuzestanica Jamzad (Marzeh Khuzestani in Persian) is an endemic plant that iswidely distributed in the southern part of Iran. Despite the number of papers published on thisplant, no one has focused on its anticancer effects. Therefore, the present study was designedto investigate the selective cytotoxic and anti-proliferative properties of satureja khuzestanicatotal extract (SKE). MCF...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Cancer research

دوره 40 6  شماره 

صفحات  -

تاریخ انتشار 1980