Track topics on Twitter Track topics that are important to you
Breast cancer patients under 40 years of age who are candidate to chemotherapy with alkylating drugs may undergo controlled ovarian stimulation (COS) with human recombinant follicle-stimulating hormone (rhFSH) in order to get fertility preservation by mature oocyte cryostorage. The direct effect(s) of exogenous rhFSH on the chemosensitivity of breast cancer is currently unknown. To clarify this issue, we incubated four different breast cancer cell lines with rhFSH (10 IU/L, 24h) and then we exposed them to doxorubicin (DOX) or cyclophosphamide (CPA). The effect(s) of rhFSH on human breast cancer cells treated with DOX or CPA was measured in terms of 1) cell viability, 2) cytotoxicity, 3) multidrug resistance (MDR) genes and proteins expression and activities, and 4) hypoxia-inducible factor 1-alpha (HIF-1α) activation. Pre-treatment with rhFSH significantly increased the viability of breast cancer cells after treatment with DOX or CPA, and reduced the lactate dehydrogenase leakage and reactive oxygen species (ROS) production. Moreover, after pre-incubation with rhFSH, the MDR proteins (Pgp, MPR1 and BCRP) expression and activity resulted up-regulated and the HIF-1α pathway activated. In addition, the use of a widely used HIF-1α inhibitor, the 3-(5'-hydroxymethyl-2'-furyl)-1-benzylindazole (YC-1), prevented the rhFSH effect on the onset of multidrug resistance. Taken together, these observations suggest that a short exposure to rhFSH induces chemoresistance to DOX and CPA in human breast cancer cells via HIF-1α activation.
This article was published in the following journal.
Name: Biology of reproduction
Concerns about breast cancer had become the most dangerous cancer to women over the world, more and more anti-cancer agents are developed to treat this malignancy. Pharmorubicin is a cytotoxic drug, w...
Acquired resistance to chemotherapy is a frequent challenge in cancer care and one of the leading causes for failing breast cancer therapies. There is accumulative clinical and experimental evidence i...
Cadmium (Cd) is a known human carcinogen. Previous studies have demonstrated that Cd exposure promoted migration and invasion of breast cancer cells. However, the molecular mechanisms underlying this ...
HER2 has been implicated in mammary tumorigenesis as well as aggressive tumor growth and metastasis. Its overexpression is related to a poor prognosis and chemoresistance in breast cancer patients. Al...
Linoleic acid (LA) is an essential and omega-6 polyunsaturated fatty acid that mediates a variety of biological processes, including migration and invasion in breast cancer cells. Phospholipase D (PLD...
Surgical samples of human primitive breast: Representative and various surgical samples of human primitive breast carcinoma in terms of histological type. Moreover, healthy tissue from the...
In this study, effects of γδT cells on human breast cancer (her2-, er-,pr-) in combination with tumor reducing surgery, for example cryosurgery going to be investigated.
Dichloroacetate (DCA) is a small molecule that has been used for years to treat lactic acidosis and rare metabolic disorders in humans. Further testing now shows that it may suppress the ...
The dysfunction of muscle stem cells after sepsis is demonstrated in mice. It is also observed that mesenchymal stem cells have a positive effect on muscle stem cells in this animal model....
Human Tc17 cells (IL-17-producing CD8+ T cells) have been found to contribute to different kinds of human inflammatory and malignant diseases. Previous studies indicate that Tc17 cells can...
Tumors or cancer of the human BREAST.
Tumors or cancer found specifically in one human BREAST, but not in both.
An estrogen responsive cell line derived from a patient with metastatic human breast ADENOCARCINOMA (at the Michigan Cancer Foundation.)
A homolog of p53 TUMOR SUPPRESSOR PROTEIN that encodes full-length trans-activating and N-terminally-truncated (DeltaN) isoforms. Detection of splice variants and isoforms in the nervous system (human TELENCEPHALON, CHOROID PLEXUS; CEREBROSPINAL FLUID), embryonic tissue, human BREAST CANCER; OVARIAN CANCER, suggest roles in cellular differentiation.
A secretoglobin that is produced by the MAMMARY GLAND of HUMANS and may be involved in the binding of ANDROGENS and other STEROIDS. The expression of this protein in normal breast epithelium and in human breast cancer has made it an important histological marker.
Recombinant DNA is the formation of a novel DNA sequence by the formation of two DNA strands. These are taken from two different organisms. These recombinant DNA molecules can be made with recombinant DNA technology. The procedure is to cut the DNA of ...
Bladder Cancer Brain Cancer Breast Cancer Cancer Cervical Cancer Colorectal Head & Neck Cancers Hodgkin Lymphoma Leukemia Lung Cancer Melanoma Myeloma Ovarian Cancer Pancreatic Cancer ...
Women's Health - key topics include breast cancer, pregnancy, menopause, stroke Follow and track Women's Health News on BioPortfolio: Women's Health News RSS Women'...