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Huang X, Rao W, Wang C, Lu J, Li Z, Kong W, Feng Y, Xu T, Apaer R, Gao F. Kaposi's sarcoma-associated herpes virus-derived microRNA K12-1 over-activates the PI3K/Akt pathway to facilitate cancer progression in HIV-related gastrointestinal Kaposi's sarcoma. SLAS Discov 2022; 27:258-265. [PMID: 35413475 DOI: 10.1016/j.slasd.2022.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/22/2022] [Accepted: 04/05/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Kaposi's sarcoma-associated herpes virus (KSHV) initiate and accelerate the development of Kaposi's sarcoma (KS), and KSHV possesses many cancer-associated genes, including KSHV-derived microRNA miR-K12-1, which has been identified to be closely associated with KS progression. However, the detailed mechanisms by which miR-K12-1 facilitates HIV-related gastrointestinal KS development are still not fully delineated. OBJECTIVES This study strived to evaluate the effect of miR-K12-1 on the progression of HIV-related gastrointestinal KS. MATERIALS AND METHODS The expression levels of miR-K12-1 in HIV-related gastrointestinal KS tissues were determined by RT-qPCR. Proliferation and apoptosis were assessed by colony formation, CCK-8 and flow cytometry, respectively. The expression of all proteins was detected by Western blot. The in vivo effect of miR-K12-1 on the formation of a tumor was explored by using the mouse xenograft model. RESULTS In this study, we uncovered that KSHV-miR-K12-1 was upregulated in HIV-related gastrointestinal KS tissues and associated with poor outcome in HIV-related gastrointestinal KS patients. Compared with the control group, after miR-K12-1 inhibitor transfection, BCBL-1 cell viability was decreased, and the cell apoptosis was significantly increased, whereas transfection of miR-K12-1 mimics promoted cell proliferation and mitosis. In addition, our rescuing experiments verified that miR-K12-1 promoted cell proliferation via activating the PI3K/Akt pathway, and inhibition of the PI3K/Akt pathway by LY294002 abrogated the tumor-promoting effects of miR-K12-1 in HIV-related gastrointestinal KS. CONCLUSIONS In summary, we concluded that KSHV-derived miR-K12-1 activate the PI3K/Akt pathway to initiate and accelerate the development of KS, which convinces us that miR-K12-1 can be used as potential biomarkers for KS diagnosis, treatment and prognosis.
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Affiliation(s)
- Xiaoling Huang
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, 830001, China; Xinjiang Clinical Research Center of Digestive System Diseases, Urumqi, 830001, China.
| | - Wei Rao
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, 830001, China; Xinjiang Clinical Research Center of Digestive System Diseases, Urumqi, 830001, China.
| | - Chun Wang
- Department of Pathology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, 830001, China.
| | - Jiajie Lu
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, 830001, China; Xinjiang Clinical Research Center of Digestive System Diseases, Urumqi, 830001, China.
| | - Ziqiong Li
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, 830001, China; Xinjiang Clinical Research Center of Digestive System Diseases, Urumqi, 830001, China.
| | - Wenjie Kong
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, 830001, China; Xinjiang Clinical Research Center of Digestive System Diseases, Urumqi, 830001, China.
| | - Yan Feng
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, 830001, China; Xinjiang Clinical Research Center of Digestive System Diseases, Urumqi, 830001, China.
| | - Tian Xu
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, 830001, China; Xinjiang Clinical Research Center of Digestive System Diseases, Urumqi, 830001, China.
| | - Rziya Apaer
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, 830001, China; Xinjiang Clinical Research Center of Digestive System Diseases, Urumqi, 830001, China.
| | - Feng Gao
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, 830001, China; Xinjiang Clinical Research Center of Digestive System Diseases, Urumqi, 830001, China.
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Nalwoga A, Cose S, Wakeham K, Miley W, Ndibazza J, Drakeley C, Elliott A, Whitby D, Newton R. Association between malaria exposure and Kaposi's sarcoma-associated herpes virus seropositivity in Uganda. Trop Med Int Health 2015; 20:665-672. [PMID: 25611008 PMCID: PMC4390463 DOI: 10.1111/tmi.12464] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Unlike other herpes viruses, Kaposi's sarcoma-associated herpes virus (KSHV) is not ubiquitous worldwide and is most prevalent in sub-Saharan Africa. The reasons for this are unclear. As part of a wider investigation of factors that facilitate transmission in Uganda, a high prevalence country, we examined the association between antimalaria antibodies and seropositivity against KSHV. METHODS Antibodies against P. falciparum merozoite surface protein (PfMSP)-1, P. falciparum apical membrane antigen (PfAMA)-1 and KSHV antigens (ORF73 and K8.1) were measured in samples from 1164 mothers and 1227 children. RESULTS Kaposi's sarcoma-associated herpes virus seroprevalence was 69% among mothers and 15% children. Among mothers, KSHV seroprevalence increased with malaria antibody titres: from 60% to 82% and from 54% to 77%, comparing those with the lowest and highest titres for PfMSP-1 and PfAMA-1, respectively (P < 0.0001). Among children, only antibodies to PfAMA-1 were significantly associated with KSHV seropositivity, (P < 0.0001). In both mothers and children, anti-ORF73 antibodies were more strongly associated with malaria antibodies than anti-K8.1 antibodies. CONCLUSION The association between malaria exposure and KSHV seropositivity suggests that malaria is a cofactor for KSHV infection or reactivation.
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Affiliation(s)
- Angela Nalwoga
- Medical Research Council/Uganda Virus Research InstituteEntebbe, Uganda
| | - Stephen Cose
- Medical Research Council/Uganda Virus Research InstituteEntebbe, Uganda
- London School of Hygiene & Tropical MedicineLondon, UK
| | - Katie Wakeham
- Medical Research Council/Uganda Virus Research InstituteEntebbe, Uganda
- Institute of Cancer Sciences, University of GlasgowGlasgow, UK
| | - Wendell Miley
- Viral Oncology Section, Frederick National Laboratory for Cancer ResearchFrederick, MD, USA
| | - Juliet Ndibazza
- Medical Research Council/Uganda Virus Research InstituteEntebbe, Uganda
| | | | - Alison Elliott
- Medical Research Council/Uganda Virus Research InstituteEntebbe, Uganda
- London School of Hygiene & Tropical MedicineLondon, UK
| | - Denise Whitby
- Viral Oncology Section, Frederick National Laboratory for Cancer ResearchFrederick, MD, USA
| | - Robert Newton
- Medical Research Council/Uganda Virus Research InstituteEntebbe, Uganda
- University of YorkYork, UK
- International Agency for Research on CancerLyon, France
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Jeffery HC, Wheat RL, Blackbourn DJ, Nash GB, Butler LM. Infection and transmission dynamics of rKSHV.219 in primary endothelial cells. J Virol Methods 2013; 193:251-9. [PMID: 23764419 PMCID: PMC4147964 DOI: 10.1016/j.jviromet.2013.06.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 05/21/2013] [Accepted: 06/03/2013] [Indexed: 11/25/2022]
Abstract
Kaposi's sarcoma-associated herpesvirus (KSHV) is the aetiologic agent of Kaposi's sarcoma (KS), a tumour of endothelial cell origin. The study of KS development was aided by the generation of a recombinant GFP (latent)/RFP (lytic)-expressing KSHV (rKSHV.219) by Vieira and O'Hearn (2004). In this study the first data characterising primary endothelial cell infection and transmission with this virus is presented. Infection was predominantly latent and the percentage of GFP-positive cells increased over time. Neither horizontal transmission of infection, nor cellular proliferation, explained this increase. Analysis of latency-associated nuclear antigen (LANA-1) expression revealed that a threshold level of infection was required for GFP expression early post infection. At later time points GFP correlated more closely with LANA-1 expression, likely due to the accumulation of GFP over time. This study provides methodological guidance for the use of rKSHV.21. In addition, it highlights potential problems associated with the use of fluorescent proteins as markers of viral infection.
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Affiliation(s)
- Hannah C Jeffery
- School of Cancer Sciences, College of Medical and Dental Sciences, University of Birmingham, B15 2TT, UK
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