Date of Award
Fall 12-20-2022
Degree Type
Thesis
Degree Name
MS Biology
Department
Biology
Advisor
Jessica Cottrell, Ph.D.
Committee Member
Daniel Brian Nichols, Ph.D.
Committee Member
Constantine Bitsaktsis, Ph.D.
Keywords
Manganese chloride, chondrogenesis, chondrocyte, hypertrophic cartilage, endochondral ossification, osteoarthritis
Abstract
Manganese is an essential trace element found in humans, which aids in several processes including brain and nerve function, glucose metabolism, calcium absorption, and bone formation and homeostasis. Specifically, bone homeostasis utilizes osteoblasts and osteoclasts, cells which function to build and reabsorb bone respectively, as well as chondrocytes, cells which aid in endochondral ossification. Chondrocytes deposit extracellular matrix components, such as aggrecan, collagen, and proteoglycans, that provide the necessary scaffold for osteoblasts to synthesize and mineralize bone. Activation of the rapamycin (mTOR) pathway influences the regulation of several cellular processes, such as skeletal development and bone homeostasis. In this study, it was hypothesized that Manganese Chloride (MnCl2) treatments would activate the RHEB/mTOR pathway in the murine ATDC5 cell line to enhance chondrocyte maturation and protection against degradation. To test this hypothesis, the effects of MnCl2 treated ATDC5 cells were measured through cellular proliferation, alkaline phosphatase activity, calcium deposition, proteoglycan concentrations, and gene expression at timepoints. Our results found that MnCl2 dose dependently decreased chondrocyte proliferation and proteoglycan deposition, while increasing alkaline phosphatase activity and calcium deposition.
Recommended Citation
Somera, Isabella, "Manganese Chloride Effects Chondrogenesis of ATDC5 Cells" (2022). Seton Hall University Dissertations and Theses (ETDs). 3042.
https://scholarship.shu.edu/dissertations/3042
Committee Approval Sheet