Abstract A24: SAS1B protein: Determining whether ASTL or SAS1B has a role in tumor progression
Immunotherapy(2018)
Abstract
The matrix metalloproteinase- Sperm Acrosomal SLLP1 Binding (SAS1B) is an ideal molecular and cellular candidate for both female contraception and for cancer therapies. SAS1B translation is restricted among adult tissues to the ovary and oocytes, and SAS1B first appears in oocytes of follicles at the primary‐secondary transition and also in tumors of varied types and stages. Research conducted using SAS1B antibodies suggested that the protein is localized at the cell membrane of cancer cells and can get internalized in a classical endocytosis assay and can be killed using an immunotoxin linked onto antibodies. The current study aims at deciphering whether the ASTL gene or the SAS1B protein is important for tumor progression, invasion and metastasis through cell biology and molecular biology tools and ensuring tumor cell killing properties via an ADC mediated killing using biochemistry and molecular biology tools. PCR, immunohistochemistry, Immunofluorescence, and Western Blots revealed that a non cancerous breast cell line MCF10A5E is SAS1B null and can be used to study cancer like properties once stably transfected with the SAS1B construct. Previous work in the lab indicated that an SAS1B-ADC strategy is a viable immunotherapy that could benefit patients who have failed to respond to chemotherapy, if indeed SAS1B plays a role in cancer development and progression. The outcomes of a SAS1B-ADC in a breast cancer model will be presented. Citation Format: Zunair Shakeel Khokhar, Alexander J. Kim, Eusebio Pires, Ryan D’Souza. SAS1B protein: Determining whether ASTL or SAS1B has a role in tumor progression [abstract]. In: Proceedings of the AACR Special Conference: Advances in Breast Cancer Research; 2017 Oct 7-10; Hollywood, CA. Philadelphia (PA): AACR; Mol Cancer Res 2018;16(8_Suppl):Abstract nr A24.
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Key words
Cancer Progression
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