Close menu


Sunderland Repository records the research produced by the University of Sunderland including practice-based research and theses.

Co-expression of HERV-R, CCND1, BRAF, FOXA1, TMPRSS2, ATF4 and low expression of BAZ1B and KMT2D is associated with early detection and poor prognosis of prostate cancer in African Black men from Nigeria.

Mohammed, F., Stawiski, K., Musa, H. S., Owolabi, S. K., Abubakar, S., Rotimi, S. O., Umar, A. K., Iliyasu, Y., Bello, A., Odedina, F. T., Yates, C. C., Petrie, K., Huang, F. W. and Ibrahim, S. (2024) Co-expression of HERV-R, CCND1, BRAF, FOXA1, TMPRSS2, ATF4 and low expression of BAZ1B and KMT2D is associated with early detection and poor prognosis of prostate cancer in African Black men from Nigeria. In: AACR ANNUAL MEETING 2024, Apr 5-10 2024, San Diego Convention Center, San Diego, California, USA.

Item Type: Conference or Workshop Item (Poster)


Prostate cancer (CaP) is a heterogeneous disease characterized by features of non-aggressive, slow-growing disorders to fast-growing disease. Men of African ancestry have disproportionately higher incidence and mortality rates for CaP than men of European ancestry. While there is evidence for a higher genetic predisposition for incidence of CaP in men of African ancestry compared to men of European ancestry, there is paucity of molecular biology and transcriptomic studies on the role of Human endogenous retroviruses (HERVs) in relation to CaP-associated genes in CaP pathogenesis and prognosis. In this study, we performed bulk RNA sequencing (RNA‐seq) on formalin‐fixed paraffin‐embeded (FFPE) CaP samples from Nigerian CaP patients to investigate the expression significance of HERV-R in relation to FOXA1, TMPRSS2, BAZ1B, KMT2D, ATF4 and BRAF genes. Based on this findings, we used immunohistochemistry (IHC), enzyme-linked immunosorbent assay (ELISA) and immunofluorescence (IF) to confirm the expression pattern of the HERV-R and FOXA1, TMPRSS2, BAZ1B, KMT2D, ATF4 and BRAF proteins on 45 FFPE CaP and blood plasma samples, and 5 CaP-free samples from patients in Zaria, Nigeria. Most of these patients were longitudinally followed from 2017 to date. The DESeq2 procedure was used for data processing, analysis, and differential expression analysis of the aforementioned genes. We found a significant expression of HERV-R in relation with FOXA1, TMPRSS2, BAZ1B, KMT2D, ATF4, CCND1 and BRAF in the CaP from rural Africans in Nigeria. HERV-R expression was found to be associated with increased PSA level, higher Gleason grade and poor prognosis of CaP. A CaP sample from an 80-year-old patient that was histologically diagnosed to have no malignancy seen despite high PSA level of >100 and poor disease outcomes shows a significant cytoplasmic expression of HERV-R, indicating that HERV-R may serve as an important biomarker for early detection. Unfortunately, we lost the 80-year-old patient to late detection before revisiting his case for proper histological diagnosis and management. In addition, some histologically diagnosed BPH samples that are apparently reported to be CaP-free show stromal cells expression of HERV-R and in some cases show expression of HERV-R in the prostatic glandular areas. In contrast, stromal cells of the CaP samples show no expression of HERV-R, but strong expression in the glandular areas. This may implicate a gradual transition from benign prostatic lesion to malignant prostatic disease. HERV-R expression in CaP may have a relationship with BRAF, CCND1, FOXA1, TMPRSS2 and ATF4 genes. These findings combined together, underscore the importance of the expanded concept of HERV-R expression and CaP associated genes in early detection of CaP and prognosis.

Full text not available from this repository.

More Information

Related URLs:
Depositing User: Kevin Petrie


Item ID: 17475
Official URL:!/20272/prese...

Users with ORCIDS

ORCID for F. Mohammed: ORCID iD
ORCID for K. Petrie: ORCID iD

Catalogue record

Date Deposited: 02 Apr 2024 10:48
Last Modified: 02 Apr 2024 10:48


Author: F. Mohammed ORCID iD
Author: K. Petrie ORCID iD
Author: K. Stawiski
Author: H. S. Musa
Author: S. K. Owolabi
Author: S. Abubakar
Author: S. O. Rotimi
Author: A. K. Umar
Author: Y. Iliyasu
Author: A. Bello
Author: F. T. Odedina
Author: C. C. Yates
Author: F. W. Huang
Author: S. Ibrahim

University Divisions

Faculty of Health Sciences and Wellbeing > School of Medicine


Sciences > Biomedical Sciences

Actions (login required)

View Item (Repository Staff Only) View Item (Repository Staff Only)