Honors Theses

Date of Award

Spring 5-9-2020

Document Type

Undergraduate Thesis


Chemistry and Biochemistry

First Advisor

Yu-Dong Zhou

Second Advisor

Dale G. Nagle

Third Advisor

Hoang Le

Relational Format



Histone deacetylase enzymes are known for their inherent activity as epigenetic modifiers. Although, they have become recognized for their role in cancer progression and other diseases. But also, histone deacetylases have other non-histone targets, for example, microtubules, which play important roles in cancer metastasis, apoptosis, and replication. With histone deacetylase inhibitors (HDACi), our research explored HDACi effects on breast cancer cell lines. The overall goal was to understand the potential of largazole, a class one histone deacetylase inhibitor on breast cancer cell lines. The research consisted of two parts: sulforhodamine B (SRB) viability assays under hypoxic and normoxic conditions. The specific cell lines that were used were MCF-7, MCF-7 BoM, MDA-MB-231, and MDA-MB-231 BoM. The results of the experiments showed that histone deacetylase inhibitors, specifically Largazole is a useful chemotherapeutic agent against breast cancer. Also, Hypoxic conditions in combination with cycloheximide did lead to lower cell proliferation. The MCF-7 and MDA-231 had greater inhibition in normoxic condition. The BoM cell lines had greater inhibition in both conditions. And as expected the triple-negative did require a greater largazole concentration for effect to take place in the hypoxic conditions. The extremely aggressive cancer cell-line MDA-MB-231 gave the most conclusive results.

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.