Publications

Publications

Ankyrin G expression is associated with androgen receptor stability, invasiveness, and lethal outcome in prostate cancer patients.

J Mol Med (Berl). 2016 Dec;94(12):1411-1422

Wang T, Abou-Ouf H, Hegazy SA, Alshalalfa M, Stoletov K, Lewis J, Donnelly B, Bismar TA

Abstract

Ankyrin G (ANK3) is a member of the Ankyrin family, which functions to provide cellular stability by anchoring the cytoskeleton to the plasma membrane. Deregulation of ANK3 expression has been observed in multiple human cancers but its mechanism remains unknown. ANK3 expression in relation to disease progression and patients’ outcome was investigated in two cohorts of prostate cancer (PCA). Mechanistic studies were carried out in vitro and in vivo using several PCA cell lines and the avian embryo model. Silencing ANK3 resulted in significant reduction of cell proliferation through an AR-independent mechanism. Decreased ANK3 expression delayed S phase to G2/M cell cycle transition and reduced the expression of cyclins A and B. However, cells with knocked-down ANK3 exhibited significant increase in cell invasion through an AR-dependent mechanism. Furthermore, we found that ANK3 is a regulator of AR protein stability. ANK3 knockdown also promoted cancer cell invasion and extravasations in vivo using the avian embryo model (p < 0.01). In human samples, ANK3 expression was dramatically upregulated in high grade intraepithelial neoplasia (HGPIN) and localized PCA (p < 0.0001). However, it was downregulated castration resistant stage (p < 0.0001) and showed inverse relation to Gleason score (p < 0.0001). In addition, increased expression of ANK3 in cancer tissues was correlated with better cancer-specific survival of PCA patients (p = 0.012).

KEY MESSAGE:

Silencing ANK3 results in significant reduction of cell proliferation through an AR-independent mechanism. ANK3 knockdown results in significant increase in cell invasion through an AR-dependent mechanism. ANK3 is a regulator of AR protein stability. ANK3 knockdown also promotes cancer cell invasion and extravasation in vivo using the avian embryo model.

PubMed

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Member of the APCaRI training program, Dr. Anais Medina Martin, selected as a remarkable woman for the International Women’s Day at the Caucus Meeting in Edmonton

Last March 8th, 2017 the Legislative Assembly of Alberta held a special session in order to celebrate the International Women’s Day in our province. Some of Elected Members of the Assembly invited one or two women from their constituency with an outstanding story to be celebrated in that special meeting. Among of that exquisite selection, Dr. Anais Medina Martin had the honor to be chosen, together with Mrs. Yvette Labiuk, as a member of the Department of Oncology at the University of Alberta.  This support is again reaffirming the personal potential that we host at the APCaRI.

- Anais Medina Martin