Influence of hormone therapy on human lung tumors transplanted into nude mice
Abstract:
Specific estrogen, progesterone, androgen and glucocorticoid receptors were determined in 8 lung tumor lines transplanted into athymic nude mice. It was found that the receptor content for estrogen, progesterone or androgen was very low for all tumor lines tested, whereas the glucocorticoid receptor content was high in all cases except 1. The growth inhibition of lung carcinomas on nude mice by glucocorticoid or antiglucocorticoid treatment suggests that lung cancer may also be influenced by hormonal therapy.
Insights
Lung tumors show low levels of estrogen, progesterone, and androgen receptors but high glucocorticoid receptor content. Glucocorticoid treatment inhibited tumor growth, suggesting hormonal therapy may impact lung cancer.
Area of Science:
- Endocrinology
- Oncology
- Pharmacology
Background:
- Hormone receptors play a role in various cancers.
- The role of specific hormone receptors in lung cancer is not fully understood.
Purpose of the Study:
- To determine the expression levels of estrogen, progesterone, androgen, and glucocorticoid receptors in lung tumor models.
- To investigate the potential of hormonal therapy in treating lung cancer.
Main Methods:
- Analysis of specific hormone receptor content in 8 lung tumor lines.
- Transplantation of lung tumor lines into athymic nude mice.
- Assessment of tumor growth inhibition following glucocorticoid or antiglucocorticoid treatment.
Main Results:
- Estrogen, progesterone, and androgen receptor content was low across all tested lung tumor lines.
- Glucocorticoid receptor content was high in most lung tumor lines.
- Glucocorticoid and antiglucocorticoid treatments demonstrated growth inhibition of lung carcinomas.
Conclusions:
- Lung tumors exhibit a distinct hormonal receptor profile, with high glucocorticoid receptor expression.
- Glucocorticoid signaling pathways may represent a therapeutic target for lung cancer.
- Hormonal therapy, particularly targeting glucocorticoids, warrants further investigation for lung cancer treatment.
