AI Article Synopsis
- Cathepsin L (CTSL) is a protein that plays a role in cancer development and was studied for its effects in breast cancer.
- The researchers used different methods to see how CTSL affects the growth and survival of breast cancer cells and found that reducing CTSL slowed down cancer cell growth.
- They discovered that high levels of CTSL in breast cancer tissues were linked to better patient outcomes, suggesting that targeting CTSL could help treat breast cancer patients.
Article Abstract
Cathepsin L (CTSL) is a lysosomal acid cysteine protease that has been implicated in tumorigenesis and malignant progression. In the present study, the role of CTSL in tumorigenesis and prognosis of breast cancer was evaluated. The prognostic value of CTSL was analyzed using immunohistochemistry in patients with breast cancer, as well as online microarray datasets. CTSL expression was knocked down in the breast cancer cell line T-47D using RNA interference. MTT and colony formation assays were performed to assess the role of CTSL in the proliferation of breast cancer cells. Cell cycle progression and apoptosis were measured using flow cytometry. A physical interaction of CTSL and cyclin dependent kinase 2 associated protein 1 (CDK2-AP1) was determined using a glutathione S-transferase pull-down assay. Endogenous CTSL expression was high in breast cancer cells and exhibited an inverse association with CDK2-AP1 expression; aberrant expression of CTSL in breast cancer tissues predicted an improved clinical outcome and prognosis. In addition, CTSL knockdown decelerated the progression of breast cancer cells by arresting cell cycle progression and increasing apoptosis. Thus, CTSL may be a potential therapeutic target for treating patients with breast cancer.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6924096 | PMC |
| http://dx.doi.org/10.3892/ol.2019.11067 | DOI Listing |
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