1
|
Brendle SA, Li JJ, Walter V, Schell TD, Kozak M, Balogh KK, Lu S, Christensen ND, Zhu Y, El-Bayoumy K, Hu J. Immune Responses in Oral Papillomavirus Clearance in the MmuPV1 Mouse Model. Pathogens 2023; 12:1452. [PMID: 38133335 PMCID: PMC10745854 DOI: 10.3390/pathogens12121452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/06/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023] Open
Abstract
Human papillomavirus (HPV)-induced oropharyngeal cancer now exceeds HPV-induced cervical cancer, with a noticeable sex bias. Although it is well established that women have a more proficient immune system, it remains unclear whether immune control of oral papillomavirus infections differs between sexes. In the current study, we use genetically modified mice to target CCR2 and Stat1 pathways, with the aim of investigating the role of both innate and adaptive immune responses in clearing oral papillomavirus, using our established papillomavirus (MmuPV1) infection model. Persistent oral MmuPV1 infection was detected in Rag1ko mice with T and B cell deficiencies. Meanwhile, other tested mice were susceptible to MmuPV1 infections but were able to clear the virus. We found sex differences in key myeloid cells, including macrophages, neutrophils, and dendritic cells in the infected tongues of wild type and Stat1ko mice but these differences were not observed in CCR2ko mice. Intriguingly, we also observed a sex difference in anti-MmuPV1 E4 antibody levels, especially for two IgG isotypes: IgG2b and IgG3. However, we found comparable numbers of interferon-gamma-producing CD8 T cells stimulated by E6 and E7 in both sexes. These findings suggest that males and females may use different components of innate and adaptive immune responses to control papillomavirus infections in the MmuPV1 mouse model. The observed sex difference in immune responses, especially in myeloid cells including dendritic cell (DC) subsets, may have potential diagnostic and prognostic values for HPV-associated oropharyngeal cancer.
Collapse
Affiliation(s)
- Sarah A. Brendle
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, State College, PA 17033, USA; (S.A.B.); (J.J.L.); (M.K.); (K.K.B.); (N.D.C.)
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.L.); (Y.Z.)
| | - Jingwei J. Li
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, State College, PA 17033, USA; (S.A.B.); (J.J.L.); (M.K.); (K.K.B.); (N.D.C.)
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.L.); (Y.Z.)
| | - Vonn Walter
- Department of Biochemistry & Molecular Biology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (V.W.); (K.E.-B.)
- Department of Public Health Sciences, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
| | - Todd D. Schell
- Department of Microbiology and Immunology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA;
| | - Michael Kozak
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, State College, PA 17033, USA; (S.A.B.); (J.J.L.); (M.K.); (K.K.B.); (N.D.C.)
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.L.); (Y.Z.)
| | - Karla K. Balogh
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, State College, PA 17033, USA; (S.A.B.); (J.J.L.); (M.K.); (K.K.B.); (N.D.C.)
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.L.); (Y.Z.)
| | - Song Lu
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.L.); (Y.Z.)
| | - Neil D. Christensen
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, State College, PA 17033, USA; (S.A.B.); (J.J.L.); (M.K.); (K.K.B.); (N.D.C.)
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.L.); (Y.Z.)
- Department of Microbiology and Immunology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA;
| | - Yusheng Zhu
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.L.); (Y.Z.)
| | - Karam El-Bayoumy
- Department of Biochemistry & Molecular Biology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (V.W.); (K.E.-B.)
| | - Jiafen Hu
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, State College, PA 17033, USA; (S.A.B.); (J.J.L.); (M.K.); (K.K.B.); (N.D.C.)
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.L.); (Y.Z.)
| |
Collapse
|
2
|
Sharma N, Jerajani K, Wan Y, Kumru OS, Pullagurla SR, Ogun O, Mapari S, Brendle S, Christensen ND, Batwal S, Mahedvi M, Rao H, Dogar V, Chandrasekharan R, Shaligram U, Volkin DB, Joshi SB. Multi-dose Formulation Development for a Quadrivalent Human Papillomavirus Virus-Like Particle-Based Vaccine: Part II- Real-time and Accelerated Stability Studies. J Pharm Sci 2023; 112:458-470. [PMID: 36462710 DOI: 10.1016/j.xphs.2022.11.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 12/05/2022]
Abstract
This work describes Part 2 of multi-dose formulation development of a Human Papillomavirus (HPV) Virus-Like Particle (VLP) based vaccine (see Part 1 in companion paper). Storage stability studies with candidate multi-dose formulations containing individual or combinations of seven different antimicrobial preservatives (APs) were performed with quadrivalent HPV VLP (6, 11, 16, 18) antigens adsorbed to aluminum-salt adjuvant (Alhydrogel®). Real-time (up to two years, 2-8°C) and accelerated (months at 25 and 40°C) stability studies identified eight lead candidates as measured by antigen stability (competitive ELISA employing conformational serotype-specific mAbs), antimicrobial effectiveness (modified European Pharmacopeia assay), total protein content (SDS-PAGE), and AP concentration (RP-UHPLC). The AH-adsorbed HPV18 VLP component was most sensitive to AP-induced destabilization. Optimal quadrivalent antigen storage stability while maintaining antimicrobial effectiveness was observed with 2-phenoxyethanol, benzyl alcohol, chlorobutanol, and 2-phenoxyethanol + benzyl alcohol combination. Interestingly, for single-AP containing multi-dose formulations, this rank-ordering of storage stability did not correlate with previously reported biophysical measurements of AP-induced antigen destabilization. Moreover, other APs (e.g., m-cresol, phenol, parabens) described by others for inclusion in multi-dose HPV VLP formulations showed suboptimal stability. These results suggest that each HPV VLP vaccine candidate (e.g., different serotypes, expression systems, processes, adjuvants) will require customized multi-dose formulation development.
Collapse
Affiliation(s)
- Nitya Sharma
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Kaushal Jerajani
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Ying Wan
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Ozan S Kumru
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Swathi R Pullagurla
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Oluwadara Ogun
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Shweta Mapari
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Sarah Brendle
- Department of Pathology, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, Pennsylvania 17033, USA
| | - Neil D Christensen
- Department of Pathology, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, Pennsylvania 17033, USA
| | | | | | - Harish Rao
- Serum Institute of India Pvt. Ltd., Pune, India
| | - Vikas Dogar
- Serum Institute of India Pvt. Ltd., Pune, India
| | | | | | - David B Volkin
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA.
| | - Sangeeta B Joshi
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA.
| |
Collapse
|
3
|
Jerajani K, Wan Y, Hickey JM, Kumru OS, Sharma N, Pullagurla SR, Ogun O, Mapari S, Whitaker N, Brendle S, Christensen ND, Batwal S, Mahedvi M, Rao H, Dogar V, Chandrasekharan R, Shaligram U, Joshi SB, Volkin DB. Analytical and Preformulation Characterization Studies of Human Papillomavirus Virus-Like Particles to Enable Quadrivalent Multi-Dose Vaccine Formulation Development. J Pharm Sci 2022; 111:2983-2997. [PMID: 35914546 DOI: 10.1016/j.xphs.2022.07.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 07/25/2022] [Accepted: 07/25/2022] [Indexed: 12/14/2022]
Abstract
Introducing multi-dose formulations of Human Papillomavirus (HPV) vaccines will reduce costs and enable improved global vaccine coverage, especially in low- and middle-income countries. This work describes the development of key analytical methods later utilized for HPV vaccine multi-dose formulation development. First, down-selection of physicochemical methods suitable for multi-dose formulation development of four HPV (6, 11, 16, and 18) Virus-Like Particles (VLPs) adsorbed to an aluminum adjuvant (Alhydrogel®, AH) was performed. The four monovalent AH-adsorbed HPV VLPs were then characterized using these down-selected methods. Second, stability-indicating competitive ELISA assays were developed using HPV serotype-specific neutralizing mAbs, to monitor relative antibody binding profiles of the four AH-adsorbed VLPs during storage. Third, concentration-dependent preservative-induced destabilization of HPV16 VLPs was demonstrated by addition of eight preservatives found in parenterally administered pharmaceuticals and vaccines, as measured by ELISA, dynamic light scattering, and differential scanning calorimetry. Finally, preservative stability and effectiveness in the presence of vaccine components were evaluated using a combination of RP-UHPLC, a microbial growth inhibition assay, and a modified version of the European Pharmacopoeia assay (Ph. Eur. 5.1.3). Results are discussed in terms of analytical challenges encountered to identify and develop high-throughput methods that facilitate multi-dose formulation development of aluminum-adjuvanted protein-based vaccine candidates.
Collapse
Affiliation(s)
- Kaushal Jerajani
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Ying Wan
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - John M Hickey
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Ozan S Kumru
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Nitya Sharma
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Swathi R Pullagurla
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Oluwadara Ogun
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Shweta Mapari
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Neal Whitaker
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Sarah Brendle
- Department of Pathology, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA
| | - Neil D Christensen
- Department of Pathology, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA
| | | | | | - Harish Rao
- Serum Institute of India Pvt. Ltd., Pune, India
| | - Vikas Dogar
- Serum Institute of India Pvt. Ltd., Pune, India
| | | | | | - Sangeeta B Joshi
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - David B Volkin
- Department of Pharmaceutical Chemistry, Vaccine Analytics and Formulation Center, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA.
| |
Collapse
|
4
|
Olczak P, Matsui K, Wong M, Alvarez J, Lambert P, Christensen ND, Hu J, Huber B, Kirnbauer R, Wang JW, Roden RBS. RG2-VLP: a Vaccine Designed to Broadly Protect against Anogenital and Skin Human Papillomaviruses Causing Human Cancer. J Virol 2022; 96:e0056622. [PMID: 35703545 PMCID: PMC9278150 DOI: 10.1128/jvi.00566-22] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 05/20/2022] [Indexed: 12/20/2022] Open
Abstract
The family of human papillomaviruses (HPV) includes over 400 genotypes. Genus α genotypes generally infect the anogenital mucosa, and a subset of these HPV are a necessary, but not sufficient, cause of cervical cancer. Of the 13 high-risk (HR) and 11 intermediate-risk (IR) HPV associated with cervical cancer, genotypes 16 and 18 cause 50% and 20% of cases, respectively, whereas HPV16 dominates in other anogenital and oropharyngeal cancers. A plethora of βHPVs are associated with cutaneous squamous cell carcinoma (CSCC), especially in sun-exposed skin sites of epidermodysplasia verruciformis (EV), AIDS, and immunosuppressed patients. Licensed L1 virus-like particle (VLP) vaccines, such as Gardasil 9, target a subset of αHPV but no βHPV. To comprehensively target both α- and βHPVs, we developed a two-component VLP vaccine, RG2-VLP, in which L2 protective epitopes derived from a conserved αHPV epitope (amino acids 17 to 36 of HPV16 L2) and a consensus βHPV sequence in the same region are displayed within the DE loop of HPV16 and HPV18 L1 VLP, respectively. Unlike vaccination with Gardasil 9, vaccination of wild-type and EV model mice (Tmc6Δ/Δ or Tmc8Δ/Δ) with RG2-VLP induced robust L2-specific antibody titers and protected against β-type HPV5. RG2-VLP protected rabbits against 17 αHPV, including those not covered by Gardasil 9. HPV16- and HPV18-specific neutralizing antibody responses were similar between RG2-VLP- and Gardasil 9-vaccinated animals. However, only transfer of RG2-VLP antiserum effectively protected naive mice from challenge with all βHPVs tested. Taken together, these observations suggest RG2-VLP's potential as a broad-spectrum vaccine to prevent αHPV-driven anogenital, oropharyngeal, and βHPV-associated cutaneous cancers. IMPORTANCE Licensed preventive HPV vaccines are composed of VLPs derived by expression of major capsid protein L1. They confer protection generally restricted to infection by the αHPVs targeted by the up-to-9-valent vaccine, and their associated anogenital cancers and genital warts, but do not target βHPV that are associated with CSCC in EV and immunocompromised patients. We describe the development of a two-antigen vaccine protective in animal models against known oncogenic αHPVs as well as diverse βHPVs by incorporation into HPV16 and HPV18 L1 VLP of 20-amino-acid conserved protective epitopes derived from minor capsid protein L2.
Collapse
Affiliation(s)
- Pola Olczak
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland, USA
| | | | - Margaret Wong
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Jade Alvarez
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Paul Lambert
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Neil D. Christensen
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania, USA
- Department of Pathology, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania, USA
| | - Jiafen Hu
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania, USA
- Department of Pathology, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania, USA
| | - Bettina Huber
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Reinhard Kirnbauer
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | | | | |
Collapse
|
5
|
Hu J, Brendle SA, Li JJ, Walter V, Cladel NM, Cooper T, Shearer DA, Balogh KK, Christensen ND. Depo Medroxyprogesterone (DMPA) Promotes Papillomavirus Infections but Does Not Accelerate Disease Progression in the Anogenital Tract of a Mouse Model. Viruses 2022; 14:v14050980. [PMID: 35632722 PMCID: PMC9147738 DOI: 10.3390/v14050980] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/29/2022] [Accepted: 05/03/2022] [Indexed: 02/01/2023] Open
Abstract
Contraceptives such as Depo-medroxyprogesterone (DMPA) are used by an estimated 34 million women worldwide. DMPA has been associated with increased risk of several viral infections including Herpes simplex virus-2 (HSV-2) and Human immunodeficiency virus (HIV). In the current study, we used the mouse papillomavirus (MmuPV1) anogenital infection model to test two hypotheses: (1) contraceptives such as DMPA increase the susceptibility of the anogenital tract to viral infection and (2) long-term contraceptive administration induces more advanced disease at the anogenital tract. DMPA treatments of both athymic nude mice and heterozygous NU/J (Foxn1nu/+) but ovariectomized mice led to a significantly increased viral load at the anogenital tract, suggesting that endogenous sex hormones were involved in increased viral susceptibility by DMPA treatment. Consistent with previous reports, DMPA treatment suppressed host anti-viral activities at the lower genital tract. To test the impact of long-term contraceptive treatment on the MmuPV1-infected lower genital tract, we included two other treatments in addition to DMPA: 17β-estradiol and a non-hormone based contraceptive Cilostazol (CLZ, Pletal). Viral infections were monitored monthly up to nine months post infection by qPCR. The infected vaginal and anal tissues were harvested and further examined by histological, virological, and immunological analyses. Surprisingly, we did not detect a significantly higher grade of histology in animals in the long-term DMPA and 17β-estradiol treated groups when compared to the control groups in the athymic mice we tested. Therefore, although DMPA promotes initial papillomavirus infections in the lower genital tract, the chronic administration of DMPA does not promote cancer development in the infected tissues in our mouse model.
Collapse
Affiliation(s)
- Jiafen Hu
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.A.B.); (J.J.L.); (N.M.C.); (D.A.S.); (K.K.B.); (N.D.C.)
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
- Correspondence:
| | - Sarah A. Brendle
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.A.B.); (J.J.L.); (N.M.C.); (D.A.S.); (K.K.B.); (N.D.C.)
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
| | - Jingwei J. Li
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.A.B.); (J.J.L.); (N.M.C.); (D.A.S.); (K.K.B.); (N.D.C.)
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
| | - Vonn Walter
- Department of Public Health Sciences, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA;
- Department of Biochemistry and Molecular Biology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
| | - Nancy M. Cladel
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.A.B.); (J.J.L.); (N.M.C.); (D.A.S.); (K.K.B.); (N.D.C.)
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
| | - Timothy Cooper
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, NIH, Fort Detrick, Frederick, MD 21702, USA;
| | - Debra A. Shearer
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.A.B.); (J.J.L.); (N.M.C.); (D.A.S.); (K.K.B.); (N.D.C.)
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
| | - Karla K. Balogh
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.A.B.); (J.J.L.); (N.M.C.); (D.A.S.); (K.K.B.); (N.D.C.)
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
| | - Neil D. Christensen
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA; (S.A.B.); (J.J.L.); (N.M.C.); (D.A.S.); (K.K.B.); (N.D.C.)
- Department of Pathology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
- Department of Microbiology and Immunology, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
| |
Collapse
|
6
|
Hartmann SR, Goetschius DJ, Hu J, Graff JJ, Bator CM, Christensen ND, Hafenstein SL. Cryo EM Analysis Reveals Inherent Flexibility of Authentic Murine Papillomavirus Capsids. Viruses 2021; 13:v13102023. [PMID: 34696452 PMCID: PMC8537154 DOI: 10.3390/v13102023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/10/2021] [Accepted: 09/29/2021] [Indexed: 01/04/2023] Open
Abstract
Human papillomavirus (HPV) is a significant health burden and leading cause of virus-induced cancers. However, studies have been hampered due to restricted tropism that makes production and purification of high titer virus problematic. This issue has been overcome by developing alternative HPV production methods such as virus-like particles (VLPs), which are devoid of a native viral genome. Structural studies have been limited in resolution due to the heterogeneity, fragility, and stability of the VLP capsids. The mouse papillomavirus (MmuPV1) presented here has provided the opportunity to study a native papillomavirus in the context of a common laboratory animal. Using cryo EM to solve the structure of MmuPV1, we achieved 3.3 Å resolution with a local symmetry refinement method that defined smaller, symmetry related subparticles. The resulting high-resolution structure allowed us to build the MmuPV1 asymmetric unit for the first time and identify putative L2 density. We also used our program ISECC to quantify capsid flexibility, which revealed that capsomers move as rigid bodies connected by flexible linkers. The MmuPV1 flexibility was comparable to that of a HPV VLP previously characterized. The resulting MmuPV1 structure is a promising step forward in the study of papillomavirus and will provide a framework for continuing biochemical, genetic, and biophysical research for papillomaviruses.
Collapse
Affiliation(s)
- Samantha R. Hartmann
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA 16802, USA; (S.R.H.); (D.J.G.); (J.J.G.)
| | - Daniel J. Goetschius
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA 16802, USA; (S.R.H.); (D.J.G.); (J.J.G.)
- Department of Medicine, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Jiafen Hu
- Department of Pathology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (J.H.); (N.D.C.)
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA
| | - Joshua J. Graff
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA 16802, USA; (S.R.H.); (D.J.G.); (J.J.G.)
| | - Carol M. Bator
- Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA;
| | - Neil D. Christensen
- Department of Pathology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (J.H.); (N.D.C.)
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Susan L. Hafenstein
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA 16802, USA; (S.R.H.); (D.J.G.); (J.J.G.)
- Department of Medicine, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
- Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA;
- Correspondence:
| |
Collapse
|
7
|
Kumar R, Christensen ND, Kaddis Maldonado RJ, Bewley MC, Ostman A, Sudol M, Chen EC, Buchkovich NW, Gontu A, Surendran Nair M, Nissly RH, Minns AM, Kapur V, Rossi R, Kuchipudi SV, Lindner SE, Parent LJ, Flanagan JM, Buchkovich NJ. Monoclonal Antibodies to S and N SARS-CoV-2 Proteins as Probes to Assess Structural and Antigenic Properties of Coronaviruses. Viruses 2021; 13:v13101899. [PMID: 34696329 PMCID: PMC8537396 DOI: 10.3390/v13101899] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/08/2021] [Accepted: 09/17/2021] [Indexed: 01/18/2023] Open
Abstract
Antibodies targeting the spike (S) and nucleocapsid (N) proteins of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are essential tools. In addition to important roles in the treatment and diagnosis of infection, the availability of high-quality specific antibodies for the S and N proteins is essential to facilitate basic research of virus replication and in the characterization of mutations responsible for variants of concern. We have developed panels of mouse and rabbit monoclonal antibodies (mAbs) to the SARS-CoV-2 spike receptor-binding domain (S-RBD) and N protein for functional and antigenic analyses. The mAbs to the S-RBD were tested for neutralization of native SARS-CoV-2, with several exhibiting neutralizing activity. The panels of mAbs to the N protein were assessed for cross-reactivity with the SARS-CoV and Middle East respiratory syndrome (MERS)-CoV N proteins and could be subdivided into sets that showed unique specificity for SARS-CoV-2 N protein, cross-reactivity between SARS-CoV-2 and SARS-CoV N proteins only, or cross-reactivity to all three coronavirus N proteins tested. Partial mapping of N-reactive mAbs were conducted using truncated fragments of the SARS-CoV-2 N protein and revealed near complete coverage of the N protein. Collectively, these sets of mouse and rabbit monoclonal antibodies can be used to examine structure/function studies for N proteins and to define the surface location of virus neutralizing epitopes on the RBD of the S protein.
Collapse
Affiliation(s)
- Rinki Kumar
- Department of Microbiology & Immunology, Penn State College of Medicine, Hershey, PA 17033, USA; (R.K.); (A.O.); (N.W.B.); (L.J.P.)
| | - Neil D. Christensen
- Department of Pathology, Penn State College of Medicine, Hershey, PA 17033, USA
- Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA; (R.H.N.); (A.M.M.); (V.K.); (R.R.); (S.V.K.); (S.E.L.); (J.M.F.)
- Correspondence: (N.D.C.); (N.J.B.)
| | - Rebecca J. Kaddis Maldonado
- Department of Medicine, Penn State College of Medicine, Hershey, PA 17033, USA; (R.J.K.M.); (M.S.); (E.C.C.)
| | - Maria C. Bewley
- Department of Biochemistry & Molecular Biology, Penn State College of Medicine, Hershey, PA 17033, USA;
| | - Alexandria Ostman
- Department of Microbiology & Immunology, Penn State College of Medicine, Hershey, PA 17033, USA; (R.K.); (A.O.); (N.W.B.); (L.J.P.)
| | - Malgorzata Sudol
- Department of Medicine, Penn State College of Medicine, Hershey, PA 17033, USA; (R.J.K.M.); (M.S.); (E.C.C.)
| | - Eunice C. Chen
- Department of Medicine, Penn State College of Medicine, Hershey, PA 17033, USA; (R.J.K.M.); (M.S.); (E.C.C.)
| | - Natalie W. Buchkovich
- Department of Microbiology & Immunology, Penn State College of Medicine, Hershey, PA 17033, USA; (R.K.); (A.O.); (N.W.B.); (L.J.P.)
| | - Abhinay Gontu
- Department of Veterinary and Biomedical Sciences, Penn State University, University Park, PA 16802, USA; (A.G.); (M.S.N.)
| | - Meera Surendran Nair
- Department of Veterinary and Biomedical Sciences, Penn State University, University Park, PA 16802, USA; (A.G.); (M.S.N.)
| | - Ruth H. Nissly
- Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA; (R.H.N.); (A.M.M.); (V.K.); (R.R.); (S.V.K.); (S.E.L.); (J.M.F.)
- Department of Veterinary and Biomedical Sciences, Penn State University, University Park, PA 16802, USA; (A.G.); (M.S.N.)
| | - Allen M. Minns
- Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA; (R.H.N.); (A.M.M.); (V.K.); (R.R.); (S.V.K.); (S.E.L.); (J.M.F.)
- Department of Animal Science, Penn State University, University Park, PA 16802, USA
| | - Vivek Kapur
- Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA; (R.H.N.); (A.M.M.); (V.K.); (R.R.); (S.V.K.); (S.E.L.); (J.M.F.)
- Department of Animal Science, Penn State University, University Park, PA 16802, USA
| | - Randall Rossi
- Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA; (R.H.N.); (A.M.M.); (V.K.); (R.R.); (S.V.K.); (S.E.L.); (J.M.F.)
| | - Suresh V. Kuchipudi
- Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA; (R.H.N.); (A.M.M.); (V.K.); (R.R.); (S.V.K.); (S.E.L.); (J.M.F.)
- Department of Veterinary and Biomedical Sciences, Penn State University, University Park, PA 16802, USA; (A.G.); (M.S.N.)
| | - Scott E. Lindner
- Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA; (R.H.N.); (A.M.M.); (V.K.); (R.R.); (S.V.K.); (S.E.L.); (J.M.F.)
- Department of Biochemistry and Molecular Biology, Penn State University, University Park, PA 16802, USA
| | - Leslie J. Parent
- Department of Microbiology & Immunology, Penn State College of Medicine, Hershey, PA 17033, USA; (R.K.); (A.O.); (N.W.B.); (L.J.P.)
- Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA; (R.H.N.); (A.M.M.); (V.K.); (R.R.); (S.V.K.); (S.E.L.); (J.M.F.)
- Department of Medicine, Penn State College of Medicine, Hershey, PA 17033, USA; (R.J.K.M.); (M.S.); (E.C.C.)
| | - John M. Flanagan
- Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA; (R.H.N.); (A.M.M.); (V.K.); (R.R.); (S.V.K.); (S.E.L.); (J.M.F.)
- Department of Biochemistry & Molecular Biology, Penn State College of Medicine, Hershey, PA 17033, USA;
| | - Nicholas J. Buchkovich
- Department of Microbiology & Immunology, Penn State College of Medicine, Hershey, PA 17033, USA; (R.K.); (A.O.); (N.W.B.); (L.J.P.)
- Correspondence: (N.D.C.); (N.J.B.)
| |
Collapse
|
8
|
Brendle S, Li JJ, Cladel NM, Shearer DA, Budgeon LR, Balogh KK, Atkins H, Costa-Fujishima M, Lopez P, Christensen ND, Doorbar J, Murooka TT, Hu J. Mouse Papillomavirus L1 and L2 Are Dispensable for Viral Infection and Persistence at Both Cutaneous and Mucosal Tissues. Viruses 2021; 13:1824. [PMID: 34578405 PMCID: PMC8473024 DOI: 10.3390/v13091824] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 01/07/2023] Open
Abstract
Papillomavirus L1 and L2, the major and minor capsid proteins, play significant roles in viral assembly, entry, and propagation. In the current study, we investigate the impact of L1 and L2 on viral life cycle and tumor growth with a newly established mouse papillomavirus (MmuPV1) infection model. MmuPV1 L1 knockout, L2 knockout, and L1 plus L2 knockout mutant genomes (designated as L1ATGko-4m, L2ATGko, and L1-L2ATGko respectively) were generated. The mutants were examined for their ability to generate lesions in athymic nude mice. Viral activities were examined by qPCR, immunohistochemistry (IHC), in situ hybridization (ISH), and transmission electron microscopy (TEM) analyses. We demonstrated that viral DNA replication and tumor growth occurred at both cutaneous and mucosal sites infected with each of the mutants. Infections involving L1ATGko-4m, L2ATGko, and L1-L2ATGko mutant genomes generally resulted in smaller tumor sizes compared to infection with the wild type. The L1 protein was absent in L1ATGko-4m and L1-L2ATGko mutant-treated tissues, even though viral transcripts and E4 protein expression were robust. Therefore, L1 is not essential for MmuPV1-induced tumor growth, and this finding parallels our previous observations in the rabbit papillomavirus model. Very few viral particles were detected in L2ATGko mutant-infected tissues. Interestingly, the localization of L1 in lesions induced by L2ATGko was primarily cytoplasmic rather than nuclear. The findings support the hypothesis that the L2 gene influences the expression, location, transport, and assembly of the L1 protein in vivo.
Collapse
Affiliation(s)
- Sarah Brendle
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA; (S.B.); (J.J.L.); (N.M.C.); (D.A.S.); (L.R.B.); (K.K.B.); (N.D.C.)
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Jingwei J. Li
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA; (S.B.); (J.J.L.); (N.M.C.); (D.A.S.); (L.R.B.); (K.K.B.); (N.D.C.)
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Nancy M. Cladel
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA; (S.B.); (J.J.L.); (N.M.C.); (D.A.S.); (L.R.B.); (K.K.B.); (N.D.C.)
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Debra A. Shearer
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA; (S.B.); (J.J.L.); (N.M.C.); (D.A.S.); (L.R.B.); (K.K.B.); (N.D.C.)
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Lynn R. Budgeon
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA; (S.B.); (J.J.L.); (N.M.C.); (D.A.S.); (L.R.B.); (K.K.B.); (N.D.C.)
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Karla K. Balogh
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA; (S.B.); (J.J.L.); (N.M.C.); (D.A.S.); (L.R.B.); (K.K.B.); (N.D.C.)
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Hannah Atkins
- Laboratory Medicine, Department of Pathology, Division of Comparative Medicine, University of North Carolina, Chapel Hill, NC 27599, USA;
| | - Marina Costa-Fujishima
- Department of Immunology, University of Manitoba, Winnipeg, MB R3E 0T5, Canada; (M.C.-F.); (P.L.); (T.T.M.)
| | - Paul Lopez
- Department of Immunology, University of Manitoba, Winnipeg, MB R3E 0T5, Canada; (M.C.-F.); (P.L.); (T.T.M.)
| | - Neil D. Christensen
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA; (S.B.); (J.J.L.); (N.M.C.); (D.A.S.); (L.R.B.); (K.K.B.); (N.D.C.)
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - John Doorbar
- Department of Pathology, Division of Virology, University of Cambridge, Tennis Court Road, Cambridge CB21 QP, UK;
| | - Thomas T. Murooka
- Department of Immunology, University of Manitoba, Winnipeg, MB R3E 0T5, Canada; (M.C.-F.); (P.L.); (T.T.M.)
| | - Jiafen Hu
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA; (S.B.); (J.J.L.); (N.M.C.); (D.A.S.); (L.R.B.); (K.K.B.); (N.D.C.)
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| |
Collapse
|
9
|
Xu J, Zhang J, Yang D, Song J, Pallas B, Zhang C, Hu J, Peng X, Christensen ND, Han R, Chen YE. Gene Editing in Rabbits: Unique Opportunities for Translational Biomedical Research. Front Genet 2021; 12:642444. [PMID: 33584832 PMCID: PMC7876448 DOI: 10.3389/fgene.2021.642444] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 01/04/2021] [Indexed: 11/13/2022] Open
Abstract
The rabbit is a classic animal model for biomedical research, but the production of gene targeted transgenic rabbits had been extremely challenging until the recent advent of gene editing tools. More than fifty gene knockout or knock-in rabbit models have been reported in the past decade. Gene edited (GE) rabbit models, compared to their counterpart mouse models, may offer unique opportunities in translational biomedical research attributed primarily to their relatively large size and long lifespan. More importantly, GE rabbit models have been found to mimic several disease pathologies better than their mouse counterparts particularly in fields focused on genetically inherited diseases, cardiovascular diseases, ocular diseases, and others. In this review we present selected examples of research areas where GE rabbit models are expected to make immediate contributions to the understanding of the pathophysiology of human disease, and support the development of novel therapeutics.
Collapse
Affiliation(s)
- Jie Xu
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Jifeng Zhang
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Dongshan Yang
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Jun Song
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Brooke Pallas
- Unit for Laboratory Animal Medicine, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Chen Zhang
- Biomedical Sciences and Biophysics Graduate Program, Division of Cardiac Surgery, Department of Surgery, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Jiafen Hu
- Department of Pathology and Laboratory Medicine, Penn State Cancer Institute, Hershey, PA, United States
| | - Xuwen Peng
- Department of Comparative Medicine, Penn State University College of Medicine, Hershey, PA, United States
| | - Neil D Christensen
- Department of Pathology and Laboratory Medicine, Penn State Cancer Institute, Hershey, PA, United States.,Department of Microbiology and Immunology, Penn State University College of Medicine, Hershey, PA, United States
| | - Renzhi Han
- Biomedical Sciences and Biophysics Graduate Program, Division of Cardiac Surgery, Department of Surgery, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Y Eugene Chen
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, University of Michigan Medical School, Ann Arbor, MI, United States
| |
Collapse
|
10
|
Christensen ND, Chen KM, Hu J, Stairs DB, Sun YW, Aliaga C, Balogh KK, Atkins H, Shearer D, Li J, Brendle SA, Gowda K, Amin S, Walter V, Viscidi R, El-Bayoumy K. The environmental pollutant and tobacco smoke constituent dibenzo[def,p]chrysene is a co-factor for malignant progression of mouse oral papillomavirus infections. Chem Biol Interact 2021; 333:109321. [PMID: 33186600 PMCID: PMC9340668 DOI: 10.1016/j.cbi.2020.109321] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 10/02/2020] [Accepted: 11/06/2020] [Indexed: 11/16/2022]
Abstract
HPV infections in the oral cavity that progress to cancer are on the increase in the USA. Model systems to study co-factors for progression of these infections are lacking as HPVs are species-restricted and cannot grow in preclinical animal models. We have recently developed a mouse papillomavirus (MmuPV1) oral mucosal infection model that provides opportunities to test, for the first time, the hypothesis that tobacco carcinogens are co-factors that can impact the progression of oral papillomas to squamous cell carcinoma (SCC). Four cohorts of mice per sex were included: (1) infected with MmuPV1 and treated orally with DMSO-saline; (2) infected with MmuPV1 and treated orally with the tobacco carcinogen, dibenzo[def,p]chrysene (DBP); (3) uninfected and treated orally with DMSO-saline, and (4) uninfected and treated orally with DBP. Oral swabs were collected monthly for subsequent assessment of viral load. Oral tissues were collected for in situ viral DNA/RNA detection, viral protein staining, and pathological assessment for hyperplasia, papillomas and SCC at study termination. We observed increased rates of SCC in oral tissue infected with MmuPV1 and treated with DBP when compared to mice treated with DBP or virus individually, each of which showed minimal disease. Virally-infected epithelium showed strong levels of viral DNA/RNA and viral protein E4/L1 staining. In contrast, areas of SCC showed reduced viral DNA staining indicative of lower viral copy per nucleus but strong RNA signals. Several host markers (p120 ctn, p53, S100A9) were also examined in the mouse oral tissues; of particular significance, p120 ctn discriminated normal un-infected epithelium from SCC or papilloma epithelium. In summary, we have confirmed that our infection model is an excellent platform to assess the impact of co-factors including tobacco carcinogens for oral PV cancerous progression. Our findings can assist in the design of novel prevention/treatment strategies for HPV positive vs. HPV negative disease.
Collapse
Affiliation(s)
- Neil D Christensen
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University, College of Medicine, Hershey, PA, USA; Department of Pathology, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Kun-Ming Chen
- Department of Biochemistry & Molecular Biology, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Jiafen Hu
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University, College of Medicine, Hershey, PA, USA; Department of Pathology, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Douglas B Stairs
- Department of Pathology, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Yuan-Wan Sun
- Department of Biochemistry & Molecular Biology, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Cesar Aliaga
- Department of Biochemistry & Molecular Biology, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Karla K Balogh
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Hannah Atkins
- Department of Comparative Medicine, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Debra Shearer
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Jingwei Li
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Sarah A Brendle
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Krishne Gowda
- Department of Pharmacology, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Shantu Amin
- Department of Pharmacology, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Vonn Walter
- Department of Biochemistry & Molecular Biology, Pennsylvania State University, College of Medicine, Hershey, PA, USA; Department of Public Health Sciences, Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Raphael Viscidi
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Karam El-Bayoumy
- Department of Biochemistry & Molecular Biology, Pennsylvania State University, College of Medicine, Hershey, PA, USA.
| |
Collapse
|
11
|
Osborne AJ, Atkins HM, Balogh KK, Brendle SA, Shearer DA, Hu J, Sample CE, Christensen ND. Antibody-Mediated Immune Subset Depletion Modulates the Immune Response in a Rabbit ( Oryctolagus cuniculus) Model of Epstein-Barr Virus Infection. Comp Med 2020; 70:312-322. [PMID: 32972486 DOI: 10.30802/aalas-cm-20-000019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Epstein-Barr Virus (EBV) is a γ-herpesvirus which infects over 90% of the adult human population. Most notably, this virus causes infectious mononucleosis but it is also associated with cancers such as Hodgkin and Burkitt lymphoma. EBV is a species-specific virus and has been studied in many animal models, including nonhuman primates, guinea pigs, humanized mice, and tree shrews. However, none of these animal models are considered the "gold standard" for EBV research. Recently, rabbits have emerged as a viable alternative model, as they are susceptible to EBV infection. In addition, the EBV infection progresses after immune suppression with cyclosporine A (CsA), modeling the reactivation of EBV after latency. We sought to refine this model for acute or active EBV infections by performing antibody-mediated depletion of certain immune subsets in rabbits. Fourteen 16 to 20-wk old, NZW rabbits were intravenously inoculated with EBV and concurrently treated with either anti-CD4 T-cell antibody, anti-pan-T-cell antibody (anti CD45), CSA, or, as a control, anti-HPV antibody. Rabbits that received the depleting antibodies were treated with CsA 3 times at a dose of 15 mg/kg SC once per day for 4 d starting at the time of EBV inoculation then the dose was increased to 20 mg/kg SC twice weekly for 2 wk. Weights, temperatures, and clinical signs were monitored, and rabbits were anesthetized once weekly for blood collection. When compared with the control group, anti-CD4-treated rabbits had fewer clinical signs and displayed higher levels of viral DNA via qPCR in splenocytes; however, flow cytometry results showed only a partial depletion of CD4 T-cells. Treatment with anti-pan-T-cell antibody did not result in noticeable T-cell depletion. These data suggest the EBV-infected rabbit is a promising model for testing antiviral medications and prophylactic vaccines for EBV.
Collapse
Affiliation(s)
- Andrea J Osborne
- Department of Comparative Medicine, Penn State College of Medicine, Hershey, Pennsylvania
| | - Hannah M Atkins
- Department of Comparative Medicine, Penn State College of Medicine, Hershey, Pennsylvania
| | - Karla K Balogh
- Department of Pathology, Penn State College of Medicine, Hershey, Pennsylvania
| | - Sarah A Brendle
- Department of Pathology, Penn State College of Medicine, Hershey, Pennsylvania
| | - Debra A Shearer
- Department of Obstetrics and Gynecology, Penn State College of Medicine, Hershey, Pennsylvania
| | - Jiafen Hu
- Department of Pathology, Penn State College of Medicine, Hershey, Pennsylvania
| | - Clare E Sample
- Department of Microbiology and Immunology, Penn State College of Medicine, Hershey, Pennsylvania
| | - Neil D Christensen
- Department of Pathology, Penn State College of Medicine, Hershey, Pennsylvania; Department of Microbiology and Immunology, Penn State College of Medicine, Hershey, Pennsylvania;,
| |
Collapse
|
12
|
Lauver MD, Goetschius DJ, Netherby-Winslow CS, Ayers KN, Jin G, Haas DG, Frost EL, Cho SH, Bator CM, Bywaters SM, Christensen ND, Hafenstein SL, Lukacher AE. Antibody escape by polyomavirus capsid mutation facilitates neurovirulence. eLife 2020; 9:e61056. [PMID: 32940605 PMCID: PMC7541085 DOI: 10.7554/elife.61056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 09/17/2020] [Indexed: 12/27/2022] Open
Abstract
JCPyV polyomavirus, a member of the human virome, causes progressive multifocal leukoencephalopathy (PML), an oft-fatal demyelinating brain disease in individuals receiving immunomodulatory therapies. Mutations in the major viral capsid protein, VP1, are common in JCPyV from PML patients (JCPyV-PML) but whether they confer neurovirulence or escape from virus-neutralizing antibody (nAb) in vivo is unknown. A mouse polyomavirus (MuPyV) with a sequence-equivalent JCPyV-PML VP1 mutation replicated poorly in the kidney, a major reservoir for JCPyV persistence, but retained the CNS infectivity, cell tropism, and neuropathology of the parental virus. This mutation rendered MuPyV resistant to a monoclonal Ab (mAb), whose specificity overlapped the endogenous anti-VP1 response. Using cryo-EM and a custom sub-particle refinement approach, we resolved an MuPyV:Fab complex map to 3.2 Å resolution. The structure revealed the mechanism of mAb evasion. Our findings demonstrate convergence between nAb evasion and CNS neurovirulence in vivo by a frequent JCPyV-PML VP1 mutation.
Collapse
Affiliation(s)
- Matthew D Lauver
- Department of Microbiology and Immunology, Penn State College of MedicineHersheyUnited States
| | - Daniel J Goetschius
- Department of Biochemistry and Molecular Biology, Pennsylvania State UniversityUniversity ParkUnited States
| | | | - Katelyn N Ayers
- Department of Microbiology and Immunology, Penn State College of MedicineHersheyUnited States
| | - Ge Jin
- Department of Microbiology and Immunology, Penn State College of MedicineHersheyUnited States
| | - Daniel G Haas
- Department of Microbiology and Immunology, Penn State College of MedicineHersheyUnited States
| | - Elizabeth L Frost
- Department of Microbiology and Immunology, Penn State College of MedicineHersheyUnited States
| | - Sung Hyun Cho
- Huck Institutes of the Life Sciences, Pennsylvania State UniversityUniversity ParkUnited States
| | - Carol M Bator
- Huck Institutes of the Life Sciences, Pennsylvania State UniversityUniversity ParkUnited States
| | - Stephanie M Bywaters
- Department of Pathology, Penn State College of MedicineHersheyUnited States
- The Jake Gittlen Laboratories for Cancer Research, Penn State College of MedicineHersheyUnited States
| | - Neil D Christensen
- Department of Pathology, Penn State College of MedicineHersheyUnited States
- The Jake Gittlen Laboratories for Cancer Research, Penn State College of MedicineHersheyUnited States
| | - Susan L Hafenstein
- Department of Biochemistry and Molecular Biology, Pennsylvania State UniversityUniversity ParkUnited States
- Huck Institutes of the Life Sciences, Pennsylvania State UniversityUniversity ParkUnited States
- Department of Medicine, Penn State College of MedicineHersheyUnited States
| | - Aron E Lukacher
- Department of Microbiology and Immunology, Penn State College of MedicineHersheyUnited States
| |
Collapse
|
13
|
El-Bayoumy K, Christensen ND, Hu J, Viscidi R, Stairs DB, Walter V, Chen KM, Sun YW, Muscat JE, Richie JP. An Integrated Approach for Preventing Oral Cavity and Oropharyngeal Cancers: Two Etiologies with Distinct and Shared Mechanisms of Carcinogenesis. Cancer Prev Res (Phila) 2020; 13:649-660. [PMID: 32434808 DOI: 10.1158/1940-6207.capr-20-0096] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/30/2020] [Accepted: 05/15/2020] [Indexed: 12/27/2022]
Abstract
Head and neck squamous cell carcinoma (HNSCC) was the 7th most common malignancy worldwide in 2018 and despite therapeutic advances, the overall survival rate for oral squamous cell carcinoma (OSCC; ∼50%) has remained unchanged for decades. The most common types are OSCC and oropharyngeal squamous cell carcinoma (OPSCC, survival rate ∼85%). Tobacco smoking is a major risk factor of HNSCC. In the developed world, the incidence of OSCC is declining as a result of tobacco cessation programs. However, OPSCC, which is also linked to human papillomavirus (HPV) infection, is on the rise and now ranks as the most common HPV-related cancer. The current state of knowledge indicates that HPV-associated disease differs substantially from other types of HNSCC and distinct biological differences between HPV-positive and HPV-negative HNSCC have been identified. Although risk factors have been extensively discussed in the literature, there are multiple clinically relevant questions that remain unanswered and even unexplored. Moreover, existing approaches (e.g., tobacco cessation, vaccination, and chemoprevention) to manage and control this disease remain a challenge. Thus, in this review, we discuss potential future basic research that can assist in a better understanding of disease pathogenesis which may lead to novel and more effective preventive strategies for OSCC and OPSCC.
Collapse
Affiliation(s)
- Karam El-Bayoumy
- Department of Biochemistry & Molecular Biology, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania.
| | - Neil D Christensen
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania.,Department of Pathology, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania
| | - Jiafen Hu
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania.,Department of Pathology, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania
| | - Raphael Viscidi
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Douglas B Stairs
- Department of Pathology, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania
| | - Vonn Walter
- Department of Biochemistry & Molecular Biology, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania.,Department of Public Health Sciences, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania
| | - Kun-Ming Chen
- Department of Biochemistry & Molecular Biology, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania
| | - Yuan-Wan Sun
- Department of Biochemistry & Molecular Biology, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania
| | - Joshua E Muscat
- Department of Public Health Sciences, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania
| | - John P Richie
- Department of Public Health Sciences, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania
| |
Collapse
|
14
|
Cladel NM, Jiang P, Li JJ, Peng X, Cooper TK, Majerciak V, Balogh KK, Meyer TJ, Brendle SA, Budgeon LR, Shearer DA, Munden R, Cam M, Vallur R, Christensen ND, Zheng ZM, Hu J. Papillomavirus can be transmitted through the blood and produce infections in blood recipients: Evidence from two animal models. Emerg Microbes Infect 2019; 8:1108-1121. [PMID: 31340720 PMCID: PMC6713970 DOI: 10.1080/22221751.2019.1637072] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Human papillomaviruses (HPV) contribute to most cervical cancers and are considered to be sexually transmitted. However, papillomaviruses are often found in cancers of internal organs, including the stomach, raising the question as to how the viruses gain access to these sites. A possible connection between blood transfusion and HPV-associated disease has not received much attention. Here we show, in rabbit and mouse models, that blood infected with papillomavirus yields infections at permissive sites with detectable viral DNA, RNA transcripts, and protein products. The rabbit skin tumours induced via blood infection displayed decreased expression of SLN, TAC1, MYH8, PGAM2, and APOBEC2 and increased expression of SDRC7, KRT16, S100A9, IL36G, and FABP9, as seen in tumours induced by local infections. Furthermore, we demonstrate that blood from infected mice can transmit the infection to uninfected animals. Finally, we demonstrate the presence of papillomavirus infections and virus-induced hyperplasia in the stomach tissues of animals infected via the blood. These results indicate that blood transmission could be another route for papillomavirus infection, implying that the human blood supply, which is not screened for papillomaviruses, could be a potential source of HPV infection as well as subsequent cancers in tissues not normally associated with the viruses.
Collapse
Affiliation(s)
- Nancy M Cladel
- a The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine , Hershey , PA , USA.,b Department of Pathology, Pennsylvania State University College of Medicine , Hershey , PA , USA
| | - Pengfei Jiang
- c Tumor Virus RNA Biology Section, RNA Biology Laboratory, National Cancer Institute, NIH , Frederick , MD , USA.,d Department of Immunology and Microbiology, School of Basic Medical Sciences, Wenzhou Medical University , Wenzhou , People's Republic of China
| | - Jingwei J Li
- a The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine , Hershey , PA , USA.,b Department of Pathology, Pennsylvania State University College of Medicine , Hershey , PA , USA
| | - Xuwen Peng
- e Department of Comparative Medicine, Pennsylvania State University College of Medicine , Hershey , PA , USA
| | - Timothy K Cooper
- f Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, NIH , Frederick , MD , USA
| | - Vladimir Majerciak
- c Tumor Virus RNA Biology Section, RNA Biology Laboratory, National Cancer Institute, NIH , Frederick , MD , USA
| | - Karla K Balogh
- a The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine , Hershey , PA , USA.,b Department of Pathology, Pennsylvania State University College of Medicine , Hershey , PA , USA
| | - Thomas J Meyer
- g CCR Collaborative Bioinformatics Resource (CCBR), Center for Cancer Research, NCI, NIH , Bethesda , MD , USA.,h Advanced Biomedical Computational Science, Frederick National Laboratory for Cancer Research , Frederick , MD , USA
| | - Sarah A Brendle
- a The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine , Hershey , PA , USA.,b Department of Pathology, Pennsylvania State University College of Medicine , Hershey , PA , USA
| | - Lynn R Budgeon
- a The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine , Hershey , PA , USA.,b Department of Pathology, Pennsylvania State University College of Medicine , Hershey , PA , USA
| | - Debra A Shearer
- a The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine , Hershey , PA , USA.,b Department of Pathology, Pennsylvania State University College of Medicine , Hershey , PA , USA
| | - Regina Munden
- e Department of Comparative Medicine, Pennsylvania State University College of Medicine , Hershey , PA , USA
| | - Maggie Cam
- g CCR Collaborative Bioinformatics Resource (CCBR), Center for Cancer Research, NCI, NIH , Bethesda , MD , USA
| | - Raghavan Vallur
- i Department of Microbiology and Immunology, Pennsylvania State University College of Medicine , Hershey , PA , USA
| | - Neil D Christensen
- a The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine , Hershey , PA , USA.,b Department of Pathology, Pennsylvania State University College of Medicine , Hershey , PA , USA.,i Department of Microbiology and Immunology, Pennsylvania State University College of Medicine , Hershey , PA , USA
| | - Zhi-Ming Zheng
- c Tumor Virus RNA Biology Section, RNA Biology Laboratory, National Cancer Institute, NIH , Frederick , MD , USA
| | - Jiafen Hu
- a The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine , Hershey , PA , USA.,b Department of Pathology, Pennsylvania State University College of Medicine , Hershey , PA , USA
| |
Collapse
|
15
|
Bywaters SM, Brendle SA, Biryukov J, Wang JW, Walston J, Milici J, Roden RB, Meyers C, Christensen ND. Production and characterization of a novel HPV anti-L2 monoclonal antibody panel. Virology 2018; 524:106-113. [PMID: 30170240 DOI: 10.1016/j.virol.2018.08.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 08/17/2018] [Accepted: 08/20/2018] [Indexed: 12/21/2022]
Abstract
The major capsid protein of HPV, L1, assembles into pentamers that form a T = 7 icosahedral particle, but the location of the co-assembled minor capsid protein, L2, remains controversial. Several researchers have developed useful monoclonal antibodies targeting L2, but most react with linear epitopes toward the N-terminus. As a means to better define the virus capsid and better assess the localization and exposure of L2 epitopes in the context of assembled HPV, we have developed a panel of 30 monoclonal antibodies (mAbs) which target the N-terminus of L2 amino acids 11-200, previously defined as a broadly protective immunogen. Select mAbs were processed with enzymes and anti-L2 Fabs were generated. These new mAb/Fab probes will be beneficial in future studies to unravel the placement of L2 and to help better define the role of L2 in the HPV lifecycle and the nature of the broadly protective epitopes.
Collapse
Affiliation(s)
- S M Bywaters
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| | - S A Brendle
- Jake Gittlen Laboratories for Cancer Research, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| | - J Biryukov
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| | - J W Wang
- Department of Pathology, Johns Hopkins University, Baltimore, MD, USA.
| | - J Walston
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| | - J Milici
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| | - R B Roden
- Department of Pathology, Johns Hopkins University, Baltimore, MD, USA.
| | - C Meyers
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| | - N D Christensen
- Jake Gittlen Laboratories for Cancer Research, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| |
Collapse
|
16
|
Morse MA, Balogh KK, Brendle SA, Campbell CA, Chen MX, Furze RC, Harada IL, Holyer ID, Kumar U, Lee K, Prinjha RK, Rüdiger M, Seal JT, Taylor S, Witherington J, Christensen ND. BET bromodomain inhibitors show anti-papillomavirus activity in vitro and block CRPV wart growth in vivo. Antiviral Res 2018; 154:158-165. [PMID: 29653131 DOI: 10.1016/j.antiviral.2018.03.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 03/22/2018] [Accepted: 03/27/2018] [Indexed: 12/19/2022]
Abstract
The DNA papillomaviruses infect squamous epithelium and can cause persistent, benign and sometimes malignant hyperproliferative lesions. Effective antiviral drugs to treat human papillomavirus (HPV) infection are lacking and here we investigate the anti-papillomavirus activity of novel epigenetic targeting drugs, BET bromodomain inhibitors. Bromodomain and Extra-Terminal domain (BET) proteins are host proteins which regulate gene transcription, they bind acetylated lysine residues in histones and non-histone proteins via bromodomains, functioning as scaffold proteins in the formation of transcriptional complexes at gene regulatory regions. The BET protein BRD4 has been shown to be involved in the papillomavirus life cycle, as a co-factor for viral E2 and also mediating viral partitioning in some virus types. We set out to study the activity of small molecule BET bromodomain inhibitors in models of papillomavirus infection. Several BET inhibitors reduced HPV11 E1ˆE4 mRNA expression in vitro and topical therapeutic administration of an exemplar compound I-BET762, abrogated CRPV cutaneous wart growth in rabbits, demonstrating translation of anti-viral effects to efficacy in vivo. Additionally I-BET762 markedly reduced viability of HPV16 infected W12 cells compared to non-infected C33A cells. The molecular mechanism for the cytotoxicity to W12 cells is unknown but may be through blocking viral-dependent cell-survival factors. We conclude that these effects, across multiple papillomavirus types and in vivo, highlight the potential to target BET bromodomains to treat HPV infection.
Collapse
Affiliation(s)
- Mary A Morse
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK.
| | - Karla K Balogh
- The Jake Gittlen Cancer Research Foundation, H069, Department of Pathology, C7800, The Pennsylvania State University, College of Medicine, 500 University Drive, Hershey, PA 17033-0850, USA
| | - Sarah A Brendle
- The Jake Gittlen Cancer Research Foundation, H069, Department of Pathology, C7800, The Pennsylvania State University, College of Medicine, 500 University Drive, Hershey, PA 17033-0850, USA
| | - Colin A Campbell
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Mao X Chen
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Rebecca C Furze
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Isobel L Harada
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Ian D Holyer
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Umesh Kumar
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Kevin Lee
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Rab K Prinjha
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Martin Rüdiger
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Jonathan T Seal
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Simon Taylor
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Jason Witherington
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Neil D Christensen
- The Jake Gittlen Cancer Research Foundation, H069, Department of Pathology, C7800, The Pennsylvania State University, College of Medicine, 500 University Drive, Hershey, PA 17033-0850, USA
| |
Collapse
|
17
|
Guan J, Bywaters SM, Brendle SA, Ashley RE, Makhov AM, Conway JF, Christensen ND, Hafenstein S. High-Resolution Structure Analysis of Antibody V5 and U4 Conformational Epitopes on Human Papillomavirus 16. Viruses 2017; 9:v9120374. [PMID: 29211035 PMCID: PMC5744149 DOI: 10.3390/v9120374] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 11/13/2017] [Accepted: 11/18/2017] [Indexed: 01/14/2023] Open
Abstract
Cancers attributable to human papillomavirus (HPV) place a huge burden on the health of both men and women. The current commercial vaccines are genotype specific and provide little therapeutic benefit to patients with existing HPV infections. Identifying the conformational epitopes on the virus capsid supports the development of improved recombinant vaccines to maximize long-term protection against multiple types of HPV. Fragments of antibody (Fab) digested from the neutralizing monoclonal antibodies H16.V5 (V5) and H16.U4 (U4) were bound to HPV16 capsids and the structures of the two virus-Fab complexes were solved to near atomic resolution using cryo-electron microscopy. The structures reveal virus conformational changes, the Fab-binding mode to the capsid, the residues comprising the epitope and indicate a potential interaction of U4 with the minor structural protein, L2. Competition enzyme-linked immunosorbent assay (ELISA) showed V5 outcompetes U4 when added sequentially, demonstrating a steric interference even though the footprints do not overlap. Combined with our previously reported immunological and structural results, we propose that the virus may initiate host entry through an interaction between the icosahedral five-fold vertex of the capsid and receptors on the host cell. The highly detailed epitopes identified for the two antibodies provide a framework for continuing biochemical, genetic and biophysical studies.
Collapse
Affiliation(s)
- Jian Guan
- Department of Medicine, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA.
| | - Stephanie M Bywaters
- Department of Pathology, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA.
| | - Sarah A Brendle
- Department of Pathology, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA.
| | - Robert E Ashley
- Department of Medicine, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA.
| | - Alexander M Makhov
- Department of Structural Biology, University of Pittsburgh School of Medicine, 3501 5th Ave, Pittsburgh, PA 15260, USA.
| | - James F Conway
- Department of Structural Biology, University of Pittsburgh School of Medicine, 3501 5th Ave, Pittsburgh, PA 15260, USA.
| | - Neil D Christensen
- Department of Pathology, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA.
| | - Susan Hafenstein
- Department of Medicine, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA.
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, Millennium Science Complex, University Park, State College, PA 16802, USA.
| |
Collapse
|
18
|
Cladel NM, Budgeon LR, Cooper TK, Balogh KK, Christensen ND, Myers R, Majerciak V, Gotte D, Zheng ZM, Hu J. Mouse papillomavirus infections spread to cutaneous sites with progression to malignancy. J Gen Virol 2017; 98:2520-2529. [PMID: 28942760 DOI: 10.1099/jgv.0.000926] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
We report secondary cutaneous infections in the mouse papillomavirus (MmuPV1)/mouse model. Our previous study demonstrated that cutaneous MmuPV1 infection could spread to mucosal sites. Recently, we observed that mucosal infections could also spread to various cutaneous sites including the back, tail, muzzle and mammary tissues. The secondary site lesions were positive for viral DNA, viral capsid protein and viral particles as determined by in situ hybridization, immunohistochemistry and transmission electron microscopy analyses, respectively. We also demonstrated differential viral production and tumour growth at different secondarily infected skin sites. For example, fewer viral particles were detected in the least susceptible back tissues when compared with those in the infected muzzle and tail, although similar amounts of viral DNA were detected. Follow-up studies demonstrated that significantly lower amounts of viral DNA were packaged in the back lesions. Lavages harvested from the oral cavity and lower genital tracts were equally infectious at both cutaneous and mucosal sites, supporting the broad tissue tropism of this papillomavirus. Importantly, two secondary skin lesions on the forearms of two mice displayed a malignant phenotype at about 9.5 months post-primary infection. Therefore, MmuPV1 induces not only dysplasia at mucosal sites such as the vagina, anus and oral cavity but also skin carcinoma at cutaneous sites. These findings demonstrate that MmuPV1 mucosal infection can be spread to cutaneous sites and suggest that the model could serve a useful role in the study of the viral life cycle and pathogenesis of papillomavirus.
Collapse
Affiliation(s)
- Nancy M Cladel
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Lynn R Budgeon
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Timothy K Cooper
- Department of Comparative Medicine, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Karla K Balogh
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Neil D Christensen
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Roland Myers
- Section of Research Resources, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Vladimir Majerciak
- Tumor Virus RNA Biology Section, RNA Biology Laboratory, National Cancer Institute, NIH, Frederick, MD 21702, USA
| | - Deanna Gotte
- Tumor Virus RNA Biology Section, RNA Biology Laboratory, National Cancer Institute, NIH, Frederick, MD 21702, USA
| | - Zhi-Ming Zheng
- Tumor Virus RNA Biology Section, RNA Biology Laboratory, National Cancer Institute, NIH, Frederick, MD 21702, USA
| | - Jiafen Hu
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| |
Collapse
|
19
|
Hu J, Cladel NM, Budgeon LR, Balogh KK, Christensen ND. The Mouse Papillomavirus Infection Model. Viruses 2017; 9:v9090246. [PMID: 28867783 PMCID: PMC5618012 DOI: 10.3390/v9090246] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 08/23/2017] [Accepted: 08/24/2017] [Indexed: 12/28/2022] Open
Abstract
The mouse papillomavirus (MmuPV1) was first reported in 2011 and has since become a powerful research tool. Through collective efforts from different groups, significant progress has been made in the understanding of molecular, virological, and immunological mechanisms of MmuPV1 infections in both immunocompromised and immunocompetent hosts. This mouse papillomavirus provides, for the first time, the opportunity to study papillomavirus infections in the context of a small common laboratory animal for which abundant reagents are available and for which many strains exist. The model is a major step forward in the study of papillomavirus disease and pathology. In this review, we summarize studies using MmuPV1 over the past six years and share our perspectives on the value of this unique model system. Specifically, we discuss viral pathogenesis in cutaneous and mucosal tissues as well as in different mouse strains, immune responses to the virus, and local host-restricted factors that may be involved in MmuPV1 infections and associated disease progression.
Collapse
Affiliation(s)
- Jiafen Hu
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA.
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| | - Nancy M Cladel
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA.
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| | - Lynn R Budgeon
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA.
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| | - Karla K Balogh
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA.
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| | - Neil D Christensen
- The Jake Gittlen Laboratories for Cancer Research, Hershey, PA 17033, USA.
- Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| |
Collapse
|
20
|
Guan J, Bywaters SM, Brendle SA, Ashley RE, Makhov AM, Conway JF, Christensen ND, Hafenstein S. Cryoelectron Microscopy Maps of Human Papillomavirus 16 Reveal L2 Densities and Heparin Binding Site. Structure 2017; 25:253-263. [PMID: 28065506 DOI: 10.1016/j.str.2016.12.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 10/07/2016] [Accepted: 12/12/2016] [Indexed: 11/24/2022]
Abstract
Human papillomavirus (HPV) is a significant health burden and leading cause of virus-induced cancers. The current commercial vaccines are genotype specific and provide little therapeutic benefit to patients with existing HPV infections. Host entry mechanisms represent an excellent target for alternative therapeutics, but HPV receptor use, the details of cell attachment, and host entry are inadequately understood. Here we present near-atomic resolution structures of the HPV16 capsid and HPV16 in complex with heparin, both determined from cryoelectron micrographs collected with direct electron detection technology. The structures clarify details of capsid architecture for the first time, including variation in L1 major capsid protein conformation and putative location of L2 minor protein. Heparin binds specifically around the capsid icosahedral vertices and may recapitulate the earliest stage of infection, providing a framework for continuing biochemical, genetic, and biophysical studies.
Collapse
Affiliation(s)
- Jian Guan
- Division of Infectious Diseases, Department of Medicine, Penn State College of Medicine, The Pennsylvania State University College of Medicine, Mail Code H036, 500 University Drive, P.O. Box 850, Hershey, PA 17033-0850, USA
| | - Stephanie M Bywaters
- Department of Pathology, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA
| | - Sarah A Brendle
- Department of Pathology, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA
| | - Robert E Ashley
- Division of Infectious Diseases, Department of Medicine, Penn State College of Medicine, The Pennsylvania State University College of Medicine, Mail Code H036, 500 University Drive, P.O. Box 850, Hershey, PA 17033-0850, USA
| | - Alexander M Makhov
- Department of Structural Biology, University of Pittsburgh School of Medicine, 3501 5th Avenue, Pittsburgh, PA 15260, USA
| | - James F Conway
- Department of Structural Biology, University of Pittsburgh School of Medicine, 3501 5th Avenue, Pittsburgh, PA 15260, USA
| | - Neil D Christensen
- Department of Pathology, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA
| | - Susan Hafenstein
- Division of Infectious Diseases, Department of Medicine, Penn State College of Medicine, The Pennsylvania State University College of Medicine, Mail Code H036, 500 University Drive, P.O. Box 850, Hershey, PA 17033-0850, USA.
| |
Collapse
|
21
|
Christensen ND, Budgeon LR, Cladel NM, Hu J. Recent advances in preclinical model systems for papillomaviruses. Virus Res 2016; 231:108-118. [PMID: 27956145 DOI: 10.1016/j.virusres.2016.12.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Accepted: 12/05/2016] [Indexed: 01/09/2023]
Abstract
Preclinical model systems to study multiple features of the papillomavirus life cycle have greatly aided our understanding of Human Papillomavirus (HPV) biology, disease progression and treatments. The challenge to studying HPV in hosts is that HPV along with most PVs are both species and tissue restricted. Thus, fundamental properties of HPV viral proteins can be assessed in specialized cell culture systems but host responses that involve innate immunity and host restriction factors requires preclinical surrogate models. Fortunately, there are several well-characterized and new animal models of papillomavirus infections that are available to the PV research community. Old models that continue to have value include canine, bovine and rabbit PV models and new rodent models are in place to better assess host-virus interactions. Questions arise as to the strengths and weaknesses of animal PV models for HPV disease and how accurately these preclinical models predict malignant progression, vaccine efficacy and therapeutic control of HPV-associated disease. In this review, we examine current preclinical models and highlight the strengths and weaknesses of the various models as well as provide an update on new opportunities to study the numerous unknowns that persist in the HPV research field.
Collapse
Affiliation(s)
- Neil D Christensen
- Department of Pathology and Microbiology and Immunology, Penn State College of Medicine, 500 University Drive, Hershey PA 17033, USA.
| | - Lynn R Budgeon
- Department of Pathology and Microbiology and Immunology, Penn State College of Medicine, 500 University Drive, Hershey PA 17033, USA
| | - Nancy M Cladel
- Department of Pathology and Microbiology and Immunology, Penn State College of Medicine, 500 University Drive, Hershey PA 17033, USA
| | - Jiafen Hu
- Department of Pathology and Microbiology and Immunology, Penn State College of Medicine, 500 University Drive, Hershey PA 17033, USA
| |
Collapse
|
22
|
Al-Jubury A, LaPatra S, Christensen ND, Zuo S, Tafalla C, Buchmann K. Exclusion of IgD-, IgT- and IgM-positive immune cells in Ichthyophonus-induced granulomas in rainbow trout Oncorhynchus mykiss (Walbaum). J Fish Dis 2016; 39:1399-1402. [PMID: 27136045 DOI: 10.1111/jfd.12475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 02/18/2016] [Accepted: 02/18/2016] [Indexed: 06/05/2023]
Affiliation(s)
- A Al-Jubury
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - S LaPatra
- Clear Springs Foods, Inc., Research Division, Buhl, ID, USA
| | - N D Christensen
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - S Zuo
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - C Tafalla
- Centro de Investigación en Sanidad Animal, (CISA-INIA), Valdeolmos, Madrid, Spain
| | - K Buchmann
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark.
| |
Collapse
|
23
|
Heim K, Hudelist G, Geier A, Szedenik H, Christensen ND, Concin N, Bergant A, Volgger B, Czerwenka K, Höpfl R. Type-Specific Antiviral Antibodies to Genital Human Papillomavirus Types in Mothers and Newborns. Reprod Sci 2016; 14:806-14. [DOI: 10.1177/1933719107309546] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Kurt Heim
- Department of Obstetrics and Gynecology, Medical University, Innsbruck,Austria,
| | - Gernot Hudelist
- Department of Obstetrics and Gynecology, General Hospital,Villach,Austria, Department of Obstetrics and Gynecology, Division of Special Gynecology, Medical University Vienna, Austria
| | - Andrea Geier
- Department of Obstetrics and Gynecology, Medical University, Innsbruck,Austria
| | - Hannes Szedenik
- Department of Obstetrics and Gynecology, Medical University, Innsbruck,Austria
| | - Neil D. Christensen
- The Jake Gittlen Cancer Research Foundation, Department of Pathology, Milton S. Hershey Medical Center, Pennsylvania State University, Hershey
| | - Nicole Concin
- Department of Obstetrics and Gynecology, Medical University, Innsbruck,Austria
| | - Anton Bergant
- Department of Obstetrics and Gynecology, Medical University, Innsbruck,Austria
| | - Birgit Volgger
- Department of Obstetrics and Gynecology, Medical University, Innsbruck,Austria
| | - Klaus Czerwenka
- Department of Clinical Pathology, Division of Gynecopathology, Medical University Vienna, Austria
| | - Reinhard Höpfl
- Department of Dermatolgy and Venerology, Medical University, Innsbruck, Austria
| |
Collapse
|
24
|
Abstract
Human papillomaviruses (HPVs) represent a large collection of viral types associated with significant clinical disease of cutaneous and mucosal epithelium. HPV-associated cancers are found in anogenital and oral mucosa, and at various cutaneous sites. Papillomaviruses are highly species and tissue restricted, and these viruses display both mucosotropic, cutaneotropic or dual tropism for epithelial tissues. A subset of HPV types, predominantly mucosal, are also oncogenic and cancers with these HPV types account for more than 200,000 deaths world-wide. Host control of HPV infections requires both innate and adaptive immunity, but the viruses have developed strategies to escape immune detection. Viral proteins can disrupt both innate pathogen-sensing pathways and T-cell based recognition and subsequent destruction of infected tissues. Current treatments to manage HPV infections include mostly ablative strategies in which recurrences are common and only active disease is treated. Although much is known about the papillomavirus life cycle, viral protein functions, and immune responsiveness, we still lack knowledge in a number of key areas of PV biology including tissue tropism, site-specific cancer progression, codon usage profiles, and what are the best strategies to mount an effective immune response to the carcinogenic stages of PV disease. In this review, disease transmission, protection and control are discussed together with questions related to areas in PV biology that will continue to provide productive opportunities of discovery and to further our understanding of this diverse set of human viral pathogens.
Collapse
Affiliation(s)
- Neil D Christensen
- The Jake Gittlen Laboratories for Cancer Research, Penn State College of Medicine, 500 University Drive, Hershey, PA 17033, USA
| |
Collapse
|
25
|
Hu J, Budgeon LR, Cladel NM, Balogh K, Myers R, Cooper TK, Christensen ND. Tracking vaginal, anal and oral infection in a mouse papillomavirus infection model. J Gen Virol 2016; 96:3554-3565. [PMID: 26399579 DOI: 10.1099/jgv.0.000295] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Noninvasive and practical techniques to longitudinally track viral infection are sought after in clinical practice. We report a proof-of-principle study to monitor the viral DNA copy number using a newly established mouse papillomavirus (MmuPV1) mucosal infection model. We hypothesized that viral presence could be identified and quantified by collecting lavage samples from cervicovaginal, anal and oral sites. Nude mice infected at these sites with infectious MmuPV1 were tracked for up to 23 weeks starting at 6 weeks post-infection. Viral DNA copy number was determined by SYBR Green Q-PCR analysis. In addition, we tracked viral DNA load through three complete oestrous cycles to pinpoint whether there was a correlation between the DNA load and the four stages of the oestrous cycle. Our results showed that high viral DNA copy number was reproducibly detected from both anal and cervicovaginal lavage samples. The infection and disease progression were further confirmed by histology, cytology, in situ hybridization, immunohistochemistry and transmission electron microscopy. Interestingly, the viral copy number fluctuated over the oestrous cycle, with the highest level at the oestrus stage, implying that multiple sampling might be necessary to provide a reliable diagnosis. Virus DNA was detected in oral lavage samples at a later time after infection. Lower viral DNA load was found in oral samples when compared with those in anal and vaginal tracts. To our knowledge, our study is the first in vivo study to sequentially monitor papillomavirus infection from mucosal anal, oral and vaginal tracts in a preclinical model.
Collapse
Affiliation(s)
- Jiafen Hu
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Lynn R Budgeon
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Nancy M Cladel
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Karla Balogh
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Roland Myers
- Section of Research Resources, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Timothy K Cooper
- Department of Comparative Medicine, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Neil D Christensen
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| |
Collapse
|
26
|
Cladel NM, Budgeon LR, Balogh KK, Cooper TK, Hu J, Christensen ND. Mouse papillomavirus MmuPV1 infects oral mucosa and preferentially targets the base of the tongue. Virology 2015; 488:73-80. [PMID: 26609937 DOI: 10.1016/j.virol.2015.10.030] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 10/15/2015] [Accepted: 10/29/2015] [Indexed: 01/31/2023]
Abstract
In 2010, a new mouse papillomavirus, MmuPV1, was discovered in a colony of NMRI- Foxn1(nu)/Foxn1(nu) athymic mice in India. This finding was significant because it was the first papillomavirus to be found in a laboratory mouse. In this paper we report successful infections of both dorsal and ventral surfaces of the rostral tongues of outbred athymic nude mice. We also report the observation that the base of the tongue, the area of the tongue often targeted by cancer-associated high-risk papillomavirus infections in humans, is especially susceptible to infection. A suitable animal model for the study of oral papillomavirus infections, co-infections, and cancers has long been sought. The work presented here suggests that such a model is now at hand.
Collapse
Affiliation(s)
- Nancy M Cladel
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, United States; Department of Pathology, Pennsylvania State University College of Medicine, United States.
| | - Lynn R Budgeon
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, United States; Department of Pathology, Pennsylvania State University College of Medicine, United States
| | - Karla K Balogh
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, United States; Department of Pathology, Pennsylvania State University College of Medicine, United States
| | - Timothy K Cooper
- Department of Comparative Medicine, Pennsylvania State University College of Medicine, United States
| | - Jiafen Hu
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, United States; Department of Pathology, Pennsylvania State University College of Medicine, United States
| | - Neil D Christensen
- The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, United States; Department of Pathology, Pennsylvania State University College of Medicine, United States; Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, United States
| |
Collapse
|
27
|
Jagu S, Karanam B, Wang JW, Zayed H, Weghofer M, Brendle SA, Balogh KK, Tossi KP, Roden RBS, Christensen ND. Durable immunity to oncogenic human papillomaviruses elicited by adjuvanted recombinant Adeno-associated virus-like particle immunogen displaying L2 17-36 epitopes. Vaccine 2015; 33:5553-5563. [PMID: 26382603 DOI: 10.1016/j.vaccine.2015.09.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 09/01/2015] [Accepted: 09/04/2015] [Indexed: 12/21/2022]
Abstract
Vaccination with the minor capsid protein L2, notably the 17-36 neutralizing epitope, induces broadly protective antibodies, although the neutralizing titers attained in serum are substantially lower than for the licensed L1 VLP vaccines. Here we examine the impact of other less reactogenic adjuvants upon the induction of durable neutralizing serum antibody responses and protective immunity after vaccination with HPV16 and HPV31 L2 amino acids 17-36 inserted at positions 587 and 453 of VP3, respectively, for surface display on Adeno-Associated Virus 2-like particles [AAVLP (HPV16/31L2)]. Mice were vaccinated three times subcutaneously with AAVLP (HPV16/31L2) at two week intervals at several doses either alone or formulated with alum, alum and MPL, RIBI adjuvant or Cervarix. The use of adjuvant with AAVLP (HPV16/31L2) was necessary in mice for the induction of L2-specific neutralizing antibody and protection against vaginal challenge with HPV16. While use of alum was sufficient to elicit durable protection (>3 months after the final immunization), antibody titers were increased by addition of MPL and RIBI adjuvants. To determine the breadth of immunity, rabbits were immunized three times with AAVLP (HPV16/31L2) either alone, formulated with alum±MPL, or RIBI adjuvants, and after serum collection, the animals were concurrently challenged with HPV16/31/35/39/45/58/59 quasivirions or cottontail rabbit papillomavirus (CRPV) at 6 or 12 months post-immunization. Strong protection against all HPV types was observed at both 6 and 12 months post-immunization, including robust protection in rabbits receiving the vaccine without adjuvant. In summary, vaccination with AAVLP presenting HPV L2 17-36 epitopes at two sites on their surface induced cross-neutralizing serum antibody, immunity against HPV16 in the genital tract, and long-term protection against skin challenge with the 7 most common oncogenic HPV types when using a clinically relevant adjuvant.
Collapse
Affiliation(s)
- Subhashini Jagu
- Department of Pathology, The Johns Hopkins University, Baltimore, MD, USA
| | | | - Joshua W Wang
- Department of Pathology, The Johns Hopkins University, Baltimore, MD, USA
| | - Hatem Zayed
- Biomedical Sciences Program, Health Sciences Department, Qatar University, PO Box 2713, Doha, Qatar
| | | | - Sarah A Brendle
- Jake Gittlen Cancer Research Foundation, Pennsylvania State University College of Medicine, Hershey, PA, USA; Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Karla K Balogh
- Jake Gittlen Cancer Research Foundation, Pennsylvania State University College of Medicine, Hershey, PA, USA; Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | | | - Richard B S Roden
- Department of Pathology, The Johns Hopkins University, Baltimore, MD, USA; Department of Oncology, The Johns Hopkins University, Baltimore, MD, USA; Department of Gynecology and Obstetrics, The Johns Hopkins University, Baltimore, MD, USA
| | - Neil D Christensen
- Jake Gittlen Cancer Research Foundation, Pennsylvania State University College of Medicine, Hershey, PA, USA; Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA, USA; Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA, USA.
| |
Collapse
|
28
|
Guan J, Bywaters SM, Brendle SA, Lee H, Ashley RE, Makhov AM, Conway JF, Christensen ND, Hafenstein S. Structural comparison of four different antibodies interacting with human papillomavirus 16 and mechanisms of neutralization. Virology 2015; 483:253-63. [PMID: 25996608 DOI: 10.1016/j.virol.2015.04.016] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 04/13/2015] [Accepted: 04/17/2015] [Indexed: 01/29/2023]
Abstract
Cryo-electron microscopy (cryo-EM) was used to solve the structures of human papillomavirus type 16 (HPV16) complexed with fragments of antibody (Fab) from three different neutralizing monoclonals (mAbs): H16.1A, H16.14J, and H263.A2. The structure-function analysis revealed predominantly monovalent binding of each Fab with capsid interactions that involved multiple loops from symmetry related copies of the major capsid protein. The residues identified in each Fab-virus interface map to a conformational groove on the surface of the capsomer. In addition to the known involvement of the FG and HI loops, the DE loop was also found to constitute the core of each epitope. Surprisingly, the epitope mapping also identified minor contributions by EF and BC loops. Complementary immunological assays included mAb and Fab neutralization. The specific binding characteristics of mAbs correlated with different neutralizing behaviors in pre- and post-attachment neutralization assays.
Collapse
Affiliation(s)
- Jian Guan
- Department of Medicine, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033 USA
| | - Stephanie M Bywaters
- Department of Pathology, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033 USA
| | - Sarah A Brendle
- Department of Pathology, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033 USA
| | - Hyunwook Lee
- Department of Medicine, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033 USA
| | - Robert E Ashley
- Department of Medicine, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033 USA
| | - Alexander M Makhov
- Department of Structural Biology, University of Pittsburgh School of Medicine, 3501 5th Ave, Pittsburgh, PA 15260 USA
| | - James F Conway
- Department of Structural Biology, University of Pittsburgh School of Medicine, 3501 5th Ave, Pittsburgh, PA 15260 USA
| | - Neil D Christensen
- Department of Pathology, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033 USA
| | - Susan Hafenstein
- Department of Medicine, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033 USA.
| |
Collapse
|
29
|
Abstract
Human papillomaviruses (HPVs) have been shown to bind to Laminin-332 (Ln-332) on the extracellular matrix (ECM) secreted by human keratinocytes. The assay described here is an important tool to study HPV receptor binding to the ECM. The assay can also be modified to study the receptors required for HPV infection and for binding to tissues. We previously showed that Ln-332 is essential for the binding of HPV11 to human keratinocytes and that infectious entry of HPV11 requires α6β4 integrin for the transfer of HPV11 from ECM to host cells (Culp et al., J Virol 80:8940-8950, 2006). We also demonstrated that several of the high-risk HPV types (16, 18, 31 and 45) bind to Ln-332 and/or other components of the ECM in vitro (Broutian et al., J Gen Virol 91:531-540, 2010). The exact binding and internalization mechanism(s) for HPV are still under investigation. A better understanding of these mechanisms will aid in the design of therapeutics against HPVs and ultimately help prevent many cancers. In this chapter, we describe the HPV binding assay to Ln-332/integrin α6β4 on human keratinocytes (ECM). We also present data and suggestions for modifying the assay for testing the specificity of HPV for receptors (by blocking receptors) and binding to human tissues (basement membrane, BM) in order to study binding mechanisms.
Collapse
Affiliation(s)
- Sarah A Brendle
- Department of Pathology, The Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA, 17033, USA
| | | |
Collapse
|
30
|
Cozza EM, Cooper TK, Budgeon LR, Christensen ND, Schell TD. Protection from tumor recurrence following adoptive immunotherapy varies with host conditioning regimen despite initial regression of autochthonous murine brain tumors. Cancer Immunol Immunother 2014; 64:325-36. [PMID: 25408469 DOI: 10.1007/s00262-014-1635-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 11/04/2014] [Indexed: 12/18/2022]
Abstract
Adoptive T cell transfer (ACT) has achieved clinical success in treating established cancer, particularly in combination with lymphodepleting regimens. Our group previously demonstrated that ACT following whole-body irradiation (WBI) promotes high-level T cell accumulation, regression of established brain tumors, and long-term protection from tumor recurrence in a mouse model of SV40 T antigen-induced choroid plexus tumors. Here we asked whether an approach that can promote strong donor T-cell responses in the absence of WBI might also produce this dramatic and durable tumor elimination following ACT. Agonist anti-CD40 antibody can enhance antigen-specific CD8(+) T-cell responses and has shown clinical efficacy as a monotherapy in the setting of cancer. We show that anti-CD40 conditioning promotes rapid accumulation of tumor-specific donor CD8(+) T cells in the brain and regression of autochthonous T antigen-induced choroid plexus tumors, similar to WBI. Despite a significant increase in the lifespan, tumors eventually recurred in anti-CD40-conditioned mice coincident with loss of T-cell persistence from both the brain and lymphoid organs. Depletion of CD8(+) T cells from the peripheral lymphoid organs of WBI-conditioned recipients failed to promote tumor recurrence, but donor cells persisted in the brains long-term in CD8-depleted mice. These results demonstrate that anti-CD40 conditioning effectively enhances ACT-mediated acute elimination of autochthonous tumors, but suggest that mechanisms associated with WBI conditioning, such as the induction of long-lived T cells, may be critical for protection from tumor recurrence.
Collapse
Affiliation(s)
- Eugene M Cozza
- Department of Microbiology and Immunology, Penn State Hershey College of Medicine, 500 University Drive, H107, Hershey, PA, 17033, USA
| | | | | | | | | |
Collapse
|
31
|
Peng X, Roshwalb S, Cooper TK, Zimmerman H, Christensen ND. High incidence of spontaneous cataracts in aging laboratory rabbits of an inbred strain. Vet Ophthalmol 2014; 18:186-90. [PMID: 25123814 DOI: 10.1111/vop.12203] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To investigate the occurrence of spontaneous cataracts in a breeding colony of the inbred EIII/JC strain of New Zealand White rabbits (Oryctolagus cuniculi) and the congenic strain of EIII/JC-HLA-A2.1transgenic rabbits. PROCEDURE A retrospective study was conducted by collecting and analyzing data from clinical records for individual rabbits filed between January 2011 and October 2013. RESULTS Thirteen cases (eight females and five males) of cataract were identified in a group of 51 EIII/JC inbred rabbits with a morbidity of 25.5%. The median age of the rabbits identified with unilateral or bilateral cataracts was 43 months in contrast to the median age of 23 months of the entire group of 51 rabbits. Additionally, seven cases (five females and two males) of cataracts were identified in a group of 21 EIII/JC-HLA-A2.1 transgenic rabbits. The EIII/JC-HLA-A2.1 transgenic rabbits showed similar morbidity (33.3%) and median age (41 months) for the development of cataracts as the EIII/JC rabbits. In both groups, none of the rabbits younger than 37 months developed cataracts while 13 (93%) of 14 EIII/JC rabbits aged 37-49 months and seven (63.6%) of 11 EIII/JC-HLA-A2.1 transgenic rabbits aged 37-43 months developed cataracts. In contrast, none of 78 outbred rabbits with a median age of 26 months (10-67 months) developed cataracts. CONCLUSION Results of this study indicate that the occurrence and high incidence of spontaneous cataracts in this inbred strain (EIII/JC) of rabbits were strictly age related and consistently transmitted through inbreeding.
Collapse
Affiliation(s)
- Xuwen Peng
- Department of Comparative Medicine, Penn State University Hershey College of Medicine, Hershey, PA, 17033, USA
| | | | | | | | | |
Collapse
|
32
|
|
33
|
Christensen ND, Cladel NM, Hu J, Balogh KK. Formulation of cidofovir improves the anti-papillomaviral activity of topical treatments in the CRPV/rabbit model. Antiviral Res 2014; 108:148-55. [PMID: 24946003 DOI: 10.1016/j.antiviral.2014.06.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 05/27/2014] [Accepted: 06/02/2014] [Indexed: 11/26/2022]
Abstract
Current topical treatments for papillomas use ablative, cytotoxic and immunomodulating strategies and reagents. However, the effectiveness of topical treatments using different formulations has not been examined in preclinical models or clinical trials. The purpose of this study was to determine whether formulation of the small molecule acyclic nucleoside, cidofovir (CDV), could lead to improved therapeutic endpoints following topical treatment of papillomas using the cottontail rabbit papillomavirus (CRPV)/rabbit model. Different formulations with a set dose of 1% cidofovir were tested to establish comparative data. The results demonstrated that anti-papilloma treatments with topical CDV were greatly enhanced when formulated versus unformulated. Best results were obtained with CDV formulated in cremophor, then in Carbomer 940, and then in DMSO. Further studies indicated that effective formulations led to complete cures of papillomas at dilutions less than 0.3% CDV. These studies together with previous observations demonstrated that unformulated CDV under the same treatment regime required doses of 2% to achieve cures demonstrating that much less compound can be used when properly formulated.
Collapse
Affiliation(s)
- Neil D Christensen
- Department of Pathology, Penn State College of Medicine, Hershey, PA 17033, United States; Department of Microbiology and Immunology, Penn State College of Medicine, Hershey, PA 17033, United States.
| | - Nancy M Cladel
- Department of Pathology, Penn State College of Medicine, Hershey, PA 17033, United States
| | - Jiafen Hu
- Department of Pathology, Penn State College of Medicine, Hershey, PA 17033, United States
| | - Karla K Balogh
- Department of Pathology, Penn State College of Medicine, Hershey, PA 17033, United States
| |
Collapse
|
34
|
Ryndock EJ, Conway MJ, Alam S, Gul S, Murad S, Christensen ND, Meyers C. Roles for human papillomavirus type 16 l1 cysteine residues 161, 229, and 379 in genome encapsidation and capsid stability. PLoS One 2014; 9:e99488. [PMID: 24918586 PMCID: PMC4053435 DOI: 10.1371/journal.pone.0099488] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Accepted: 05/15/2014] [Indexed: 12/13/2022] Open
Abstract
Human papillomavirus (HPV) capsids are formed through a network of inter- and intra-pentameric hydrophobic interactions and disulfide bonds. 72 pentamers of the major capsid protein, L1, and an unknown amount of the minor capsid protein, L2, form the structure of the capsid. There are 12 conserved L1 cysteine residues in HPV16. While C175, C185, and C428 have been implicated in the formation of a critical inter-pentameric disulfide bond, no structural or functional roles have been firmly attributed to any of the other conserved cysteine residues. Here, we show that substitution of cysteine residues C161, C229, and C379 for serine hinders the accumulation of endonuclease-resistant genomes as virions mature within stratifying and differentiating human epithelial tissue. C229S mutant virions form, but are non-infectious. These studies add detail to the differentiation-dependent assembly and maturation that occur during the HPV16 life cycle in human tissue.
Collapse
Affiliation(s)
- Eric J. Ryndock
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
| | - Michael J. Conway
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
| | - Samina Alam
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
| | - Sana Gul
- Health Care Biotechnology Department, Atta-ur-Rahman School of Applied Biosciences, National University of Science and Technology, Islamabad, Pakistan
| | - Sheeba Murad
- Health Care Biotechnology Department, Atta-ur-Rahman School of Applied Biosciences, National University of Science and Technology, Islamabad, Pakistan
| | - Neil D. Christensen
- Department of Pathology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
| | - Craig Meyers
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
- * E-mail:
| |
Collapse
|
35
|
Berry GJ, Budgeon LR, Cooper TK, Christensen ND, Waldner H. The type 1 diabetes resistance locus B10 Idd9.3 mediates impaired B-cell lymphopoiesis and implicates microRNA-34a in diabetes protection. Eur J Immunol 2014; 44:1716-27. [PMID: 24752729 DOI: 10.1002/eji.201344116] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 01/27/2014] [Accepted: 03/11/2014] [Indexed: 01/07/2023]
Abstract
NOD.B10 Idd9.3 mice are congenic for the insulin-dependent diabetes (Idd) Idd9.3 locus, which confers significant type 1 diabetes (T1D) protection and encodes 19 genes, including microRNA (miR)-34a, from T1D-resistant C57BL/10 mice. B cells have been shown to play a critical role in the priming of autoantigen-specific CD4(+) T cells in T1D pathogenesis in non-obese diabetic (NOD) mice. We show that early B-cell development is impaired in NOD.B10 Idd9.3 mice, resulting in the profound reduction of transitional and mature splenic B cells as compared with NOD mice. Molecular analysis revealed that miR-34a expression was significantly higher in B-cell progenitors and marginal zone B cells from NOD.B10 Idd9.3 mice than in NOD mice. Furthermore, miR-34a expression in these cell populations inversely correlated with levels of Foxp1, an essential regulator of B-cell lymphopoiesis, which is directly repressed by miR-34a. In addition, we show that islet-specific CD4(+) T cells proliferated inefficiently when primed by NOD.B10 Idd9.3 B cells in vitro or in response to endogenous autoantigen in NOD.B10 Idd9.3 mice. Thus, Idd9.3-encoded miR-34a is a likely candidate in negatively regulating B-cell lymphopoiesis, which may contribute to inefficient expansion of islet-specific CD4(+) T cells and to T1D protection in NOD.B10 Idd9.3 mice.
Collapse
Affiliation(s)
- Gregory J Berry
- Department of Microbiology and Immunology, College of Medicine, Pennsylvania State University, Hershey, PA, USA
| | | | | | | | | |
Collapse
|
36
|
Abstract
Human papillomaviruses (HPVs) are associated with benign lesions known as warts and several cancer types including cancer of the cervix, penis, anus and oral cavity. HPVs are classified by their oncogenic potential and are divided into high-risk oncogenic HPVs and low-risk HPVs. Tissue tropism is used as another means of classifying the virus, and HPVs are divided into types that infect mucosal or cutaneous tissues. Several risk factors have been identified that elevate an individual's likelihood of becoming infected with HPV including cigarette smoking, a large number of lifetime sexual partners and immunosuppression. Most HPV infections are cleared naturally, although persistent infection with oncogenic HPV types can lead to the cancers mentioned above. HPV has employed several mechanisms to avoid detection by the host immune system. Virus is released along with shedding skin cells in a nonlytic manner, and the virus has an altered codon usage leading to reduced expression of viral proteins. Infections from high-risk oncogenic HPV types that progress cause neoplasias that are defined as CIN1-CIN3 depending on the amount of abnormal cell growth and the level of cellular differentiation.
Collapse
Affiliation(s)
- Sarah A Brendle
- Departments of Pathology and Microbiology and Immunology, Jake Gittlen Cancer Research Foundation, Penn State College of Medicine, Hershey, Pa., USA
| | | | | |
Collapse
|
37
|
Abstract
Prophylactic and therapeutic immunization strategies are an effective method to control human papillomavirus (HPV)-associated diseases and cancers. Current protective virus-like particle and capsid-based vaccines are highly protective against vaccine-matched HPV types, and continued improvements in second-generation vaccines will lead to broader protection and cross-protection against the cancer-associated types. Increasing the effectiveness of broadly cross-protective L2-based immunogens will require adjuvants that activate innate immunity to thus enhance adaptive immunity. Therapeutic immunization strategies are needed to control and cure clinical disease and HPV-associated cancers. Significant advances in strategies to improve induction of cell-mediated immunity to HPV early (and capsid) proteins have been pretested in preclinical animal papillomavirus models. Several of these effective protocols have translated into successful therapeutic immune-mediated clearance of clinical lesions. Nevertheless, there are significant challenges in activating immunity to cancer-associated lesions due to various immune downregulatory events that are triggered by persistent HPV infections. A better understanding of immune responses to HPV lesions in situ is needed to optimize immune effector T cells that efficiently locate to sites of infection and which should lead to an effective immunotherapeutic management of this important human viral pathogen. The most effective immunization strategy may well require combination antiviral and immunotherapeutic treatments to achieve complete clearance of HPV infections and associated cancers.
Collapse
Affiliation(s)
- Neil D Christensen
- Departments of Pathology and Microbiology and Immunology, Penn State Hershey Medical Center, College of Medicine, Hershey, Pa., USA
| | | |
Collapse
|
38
|
Cozza EM, Budgeon LR, Christensen ND, Schell TD. Abstract 3975: Regression of established tumors requires timely adoptive T cell transfer following whole body irradiation. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-3975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Adoptive immunotherapy with CD8+ T cells has achieved some success in treating established cancer. Response rates are increased by preconditioning the patient with lymphodepleting whole body irradiation (WBI) prior to T cell transfer, including an increased fraction of complete responses. Using a mouse model of autochthonous brain cancer, we previously demonstrated that adoptive transfer of tumor-specific T cells following WBI promotes complete regression of established tumors and long-term survival. However, the mechanisms required to achieve complete responses remain to be defined. Here we investigate kinetic requirements for adoptive T cell transfer to achieve tumor control following WBI. To test the hypothesis that adoptive transfer early after irradiation is required for maximum long-term tumor control, we delayed adoptive transfer of T cells to tumor-bearing mice at varying intervals following irradiation. We show that delay of adoptive transfer did not affect initial T cell priming or the timing of initial appearance of activated T cells at the tumor site. However, we observed a modest decrease in T cell accumulation at the earliest appearance of cells in the brain (5 days post-transfer). Tumors were completely eliminated within 10 days in mice that received T cell transfer one day following WBI, while delayed transfer abrogated this effect. When adoptive transfer was delayed by one week following WBI, incomplete tumor regression was observed at 10 days post-transfer. Although mice in this group lived significantly longer than control animals, they eventually succumbed to lethal tumor recurrence. Our data suggest that lymphodepleting doses of WBI promote a prolonged window for effective T cell priming against the endogenous tumor antigen, but that optimal therapeutic potential requires T cell transfer early after irradiation conditioning. Supported by research grant CA02500 from the National Cancer Institute/National Institutes of Health.
Citation Format: Eugene M. Cozza, Lynn R. Budgeon, Neil D. Christensen, Todd D. Schell. Regression of established tumors requires timely adoptive T cell transfer following whole body irradiation. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 3975. doi:10.1158/1538-7445.AM2013-3975
Collapse
Affiliation(s)
- Eugene M. Cozza
- The Pennsylvania State University College of Medicine, Hershey, PA
| | - Lynn R. Budgeon
- The Pennsylvania State University College of Medicine, Hershey, PA
| | | | - Todd D. Schell
- The Pennsylvania State University College of Medicine, Hershey, PA
| |
Collapse
|
39
|
Kwak K, Jiang R, Jagu S, Wang JW, Wang C, Christensen ND, Roden RBS. Multivalent human papillomavirus l1 DNA vaccination utilizing electroporation. PLoS One 2013; 8:e60507. [PMID: 23536912 PMCID: PMC3607584 DOI: 10.1371/journal.pone.0060507] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 02/27/2013] [Indexed: 11/19/2022] Open
Abstract
Objectives Naked DNA vaccines can be manufactured simply and are stable at ambient temperature, but require improved delivery technologies to boost immunogenicity. Here we explore in vivo electroporation for multivalent codon-optimized human papillomavirus (HPV) L1 and L2 DNA vaccination. Methods Balb/c mice were vaccinated three times at two week intervals with a fusion protein comprising L2 residues ∼11−88 of 8 different HPV types (11−88×8) or its DNA expression vector, DNA constructs expressing L1 only or L1+L2 of a single HPV type, or as a mixture of several high-risk HPV types and administered utilizing electroporation, i.m. injection or gene gun. Serum was collected two weeks and 3 months after the last vaccination. Sera from immunized mice were tested for in-vitro neutralization titer, and protective efficacy upon passive transfer to naive mice and vaginal HPV challenge. Heterotypic interactions between L1 proteins of HPV6, HPV16 and HPV18 in 293TT cells were tested by co-precipitation using type-specific monoclonal antibodies. Results Electroporation with L2 multimer DNA did not elicit detectable antibody titer, whereas DNA expressing L1 or L1+L2 induced L1-specific, type-restricted neutralizing antibodies, with titers approaching those induced by Gardasil. Co-expression of L2 neither augmented L1-specific responses nor induced L2-specific antibodies. Delivery of HPV L1 DNA via in vivo electroporation produces a stronger antibody response compared to i.m. injection or i.d. ballistic delivery via gene gun. Reduced neutralizing antibody titers were observed for certain types when vaccinating with a mixture of L1 (or L1+L2) vectors of multiple HPV types, likely resulting from heterotypic L1 interactions observed in co-immunoprecipitation studies. High titers were restored by vaccinating with individual constructs at different sites, or partially recovered by co-expression of L2, such that durable protective antibody titers were achieved for each type. Discussion Multivalent vaccination via in vivo electroporation requires spatial separation of individual type L1 DNA vaccines.
Collapse
MESH Headings
- Alphapapillomavirus/classification
- Alphapapillomavirus/genetics
- Alphapapillomavirus/immunology
- Animals
- Antibodies, Neutralizing/blood
- Antibodies, Neutralizing/immunology
- Antibodies, Viral/blood
- Antibodies, Viral/immunology
- Antibody Specificity
- Capsid Proteins/genetics
- Capsid Proteins/immunology
- Cell Line
- Electroporation
- Human Papillomavirus Recombinant Vaccine Quadrivalent, Types 6, 11, 16, 18
- Humans
- Mice
- Papillomavirus Infections/prevention & control
- Papillomavirus Vaccines/administration & dosage
- Papillomavirus Vaccines/immunology
- Vaccination
- Vaccines, DNA/administration & dosage
- Vaccines, DNA/immunology
Collapse
Affiliation(s)
- Kihyuck Kwak
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Rosie Jiang
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Subhashini Jagu
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Joshua W. Wang
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Chenguang Wang
- Department of Biostatistics, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Neil D. Christensen
- Departments of Pathology, Microbiology and Immunology, Penn State University, Hershey, Pennsylvania, United States of America
| | - Richard B. S. Roden
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland, United States of America
- * E-mail:
| |
Collapse
|
40
|
Du C, He HJ, Kuang YP, Zhang B, Christensen ND, Chivukula RS, Simmons EH. Discovering new gauge bosons of electroweak symmetry breaking at LHC-8. Int J Clin Exp Med 2012. [DOI: 10.1103/physrevd.86.095011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
41
|
|
42
|
Conway MJ, Cruz L, Alam S, Christensen ND, Meyers C. Differentiation-dependent interpentameric disulfide bond stabilizes native human papillomavirus type 16. PLoS One 2011; 6:e22427. [PMID: 21811610 PMCID: PMC3139651 DOI: 10.1371/journal.pone.0022427] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Accepted: 06/23/2011] [Indexed: 11/18/2022] Open
Abstract
Genetic and biochemical analyses of human papillomavirus type 16 (HPV16) capsids have shown that certain conserved L1 cysteine residues are critical for capsid assembly, integrity, and maturation. Since previous studies utilized HPV capsids produced in monolayer culture-based protein expression systems, the ascribed roles for these cysteine residues were not placed in the temporal context of the natural host environment for HPV, stratifying and differentiating human tissue. Here we extend upon previous observation, that HPV16 capsids mature and become stabilized over time (10-day to 20-day) in a naturally occurring tissue-spanning redox gradient, by identifying temporal roles for individual L1 cysteine residues. Specifically, the C175S substitution severely undermined wild-type titers of the virus within both 10 and 20-day tissue, while C428S, C185S, and C175,185S substitutions severely undermined wild-type titers only within 20-day tissue. All mutations led to 20-day virions that were less stable than wild-type and failed to form L1 multimers via nonreducing SDS-PAGE. Furthermore, Optiprep-fractionated 20-day C428S, C175S, and C175,185S capsids appeared permeable to endonucleases in comparison to wild-type and C185S capsids. Exposure to an oxidizing environment failed to enhance infectious titers of any of the cysteine mutants over time as with wild-type. Introduction of these cys mutants results in failure of the virus to mature.
Collapse
Affiliation(s)
- Michael J. Conway
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
| | - Linda Cruz
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
| | - Samina Alam
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
| | - Neil D. Christensen
- Department of Pathology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
| | - Craig Meyers
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
- * E-mail:
| |
Collapse
|
43
|
Bowser BS, Chen HS, Conway MJ, Christensen ND, Meyers C. Human papillomavirus type 18 chimeras containing the L2/L1 capsid genes from evolutionarily diverse papillomavirus types generate infectious virus. Virus Res 2011; 160:246-55. [PMID: 21762735 DOI: 10.1016/j.virusres.2011.06.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2011] [Revised: 06/28/2011] [Accepted: 06/28/2011] [Indexed: 01/04/2023]
Abstract
Papillomaviruses (PVs) comprise a large family of viruses infecting nearly all vertebrate species, with more than 100 human PVs identified. Our previous studies showed that a mutant chimera HPV18/16 genome, consisting of the upper regulatory region and early ORFs of HPV18 and the late ORFs of HPV16, was capable of producing infectious virus in organotypic raft cultures. We were interested in determining whether the ability of this chimeric genome to produce infectious virus was the result of HPV18 and HPV16 being similarly oncogenic, anogenital types and whether more disparate PV types could also interact functionally. To test this we created a series of HPV18 chimeric genomes where the ORFs for the HPV18 capsid genes were replaced with the capsid genes of HPV45, HPV39, HPV33, HPV31, HPV11, HPV6b, HPV1a, CRPV, and BPV1. All chimeras were able to produce infectious chimeric viral particles, although with lower infectivity than wild-type HPV18. Steps in the viral life cycle and characteristics of the viral particles were examined to identify potential causes for the decrease in infectivity.
Collapse
Affiliation(s)
- Brian S Bowser
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | | | | | | | | |
Collapse
|
44
|
Lei F, Zhao B, Haque R, Xiong X, Budgeon L, Christensen ND, Wu Y, Song J. In vivo programming of tumor antigen-specific T lymphocytes from pluripotent stem cells to promote cancer immunosurveillance. Cancer Res 2011; 71:4742-7. [PMID: 21628492 DOI: 10.1158/0008-5472.can-11-0359] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Adoptive T-cell immunotherapy has garnered wide attention, but its effective use is limited by the need of multiple ex vivo manipulations and infusions that are complex and expensive. In this study, we show how highly reactive antigen (Ag)-specific CTLs can be generated from induced pluripotent stem (iPS) cells to provide an unlimited source of functional CTLs for adoptive immunotherapy. iPS cell-derived T cells can offer the advantages of avoiding possible immune rejection and circumventing ethical and practical issues associated with other stem cell types. iPS cells can be differentiated into progenitor T cells in vitro by stimulation with the Notch ligand Delta-like 1 (DL1) overexpressed on bone marrow stromal cells, with complete maturation occurring upon adoptive transfer into Rag1-deficient mice. Here, we report that these iPS cells can be differentiated in vivo into functional CTLs after overexpression of MHC I-restricted Ag-specific T-cell receptors (TCR). In this study, we generated murine iPS cells genetically modified with ovalbumin (OVA)-specific and MHC-I restricted TCR (OT-I) by retrovirus-mediated transduction. After their adoptive transfer into recipient mice, the majority of OT-I/iPS cells underwent differentiation into CD8+ CTLs. TCR-transduced iPS cells developed in vivo responded in vitro to peptide stimulation by secreting interleukin 2 and IFN-γ. Most importantly, adoptive transfer of TCR-transduced iPS cells triggered infiltration of OVA-reactive CTLs into tumor tissues and protected animals from tumor challenge. Taken together, our findings offer proof of concept for a potentially more efficient approach to generate Ag-specific T lymphocytes for adoptive immunotherapy.
Collapse
Affiliation(s)
- Fengyang Lei
- Departments of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | | | | | | | | | | | | | | |
Collapse
|
45
|
Chen HS, Conway MJ, Christensen ND, Alam S, Meyers C. Papillomavirus capsid proteins mutually impact structure. Virology 2011; 412:378-83. [PMID: 21329956 DOI: 10.1016/j.virol.2011.01.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Revised: 12/06/2010] [Accepted: 01/14/2011] [Indexed: 02/08/2023]
Abstract
We studied a panel of mutant viruses containing wild-type and chimeric capsid HPV16 and HPV18 proteins. The mutant capsid protein expression, genome amplification, and episomal maintenance were comparable with the wild-type virus. However, the chimeric viruses varied in their titers from wild-type. We show that the intertypical mutant chimeric capsid viruses, that L2 affects the structure of L1 and that L1 affects the structure of L2 in the virion. These effects were measured using a panel of conformation-dependent neutralizing L1 MAbs and an L2 capsid surface peptide derived neutralizing antibody. These data suggest that variation of one capsid gene not only affects its own structure and antigenicity, but also affects the structure and antigenicity of the other capsid protein. Implications of our data suggest that for the continued effectiveness of a vaccine, variation in both capsid proteins need to be considered and not just the protein the vaccine is directed against.
Collapse
Affiliation(s)
- Horng-Shen Chen
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA
| | | | | | | | | |
Collapse
|
46
|
Bounds CE, Hu J, Cladel NM, Balogh K, Christensen ND. Vaccine generated immunity targets an HPV16 E7 HLA-A2.1-restricted CD8(+) T cell epitope relocated to an early gene or a late gene of the cottontail rabbit papillomavirus (CRPV) genome in HLA-A2.1 transgenic rabbits. Vaccine 2010; 29:1194-200. [PMID: 21167863 DOI: 10.1016/j.vaccine.2010.12.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2010] [Revised: 11/03/2010] [Accepted: 12/02/2010] [Indexed: 11/24/2022]
Abstract
The newly established HLA-A2.1 transgenic rabbit model has proven useful for testing the immunogenicity of well known and computer-predicted A2-restricted epitopes. In the current study we compared the protective immunity induced to a preferred HPV16 E7 A2-restricted epitope that has been relocated to positions within the CRPV E7 gene and the CRPV L2 gene. Epitope expression from both the E7 protein and the L2 protein resulted in increased protection against viral DNA challenge of the HLA-A2.1 transgenic rabbits as compared to control-vaccinated rabbit groups. These data indicate that proteins expressed at both early and late time points during a natural papillomavirus infection can be targeted by epitope-specific immunity and indicate this immunity is increased to early rather than late expressed proteins of papillomaviruses. This study also highlights the broad utility of the HLAA2.1 transgenic rabbit model for testing numerous immunological factors involved in vaccine generated protective immunity.
Collapse
Affiliation(s)
- Callie E Bounds
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | | | | | | | | |
Collapse
|
47
|
Cladel NM, Bertotto A, Christensen ND. Human alpha and beta papillomaviruses use different synonymous codon profiles. Virus Genes 2010; 40:329-40. [PMID: 20157772 PMCID: PMC3752370 DOI: 10.1007/s11262-010-0451-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2009] [Accepted: 01/22/2010] [Indexed: 01/11/2023]
Abstract
Human papillomaviruses use rare codons relative to their hosts. It has been theorized that this is a mechanism to allow the virus to escape immune surveillance. In the present study, we examined the codings of four major genes of 21 human alpha (mucosatropic) viruses and 16 human beta (cutaneous-tropic) viruses. We compared the codon usage of different genes from a given papillomavirus and also the same genes from different papillomaviruses. Our data showed that codon usage was not always uniform between two genes of a given papillomavirus or between the same genes of papillomaviruses from different genera. We speculate as to why this might be and conclude that codon usage in the papillomaviruses may not only play a role in facilitating escape from immune surveillance but may also underlie some of the unanswered questions in the papillomavirus field.
Collapse
Affiliation(s)
- Nancy M Cladel
- Jake Gittlen Cancer Research Foundation, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| | | | | |
Collapse
|
48
|
Chentoufi AA, Dasgupta G, Christensen ND, Hu J, Choudhury ZS, Azeem A, Jester JV, Nesburn AB, Wechsler SL, BenMohamed L. A novel HLA (HLA-A*0201) transgenic rabbit model for preclinical evaluation of human CD8+ T cell epitope-based vaccines against ocular herpes. J Immunol 2010; 184:2561-71. [PMID: 20124097 PMCID: PMC3752373 DOI: 10.4049/jimmunol.0902322] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We introduced a novel humanized HLA-A*0201 transgenic (HLA Tg) rabbit model to assess the protective efficacy of a human CD8(+) T cell epitope-based vaccine against primary ocular herpes infection and disease. Each of the three immunodominant human CD8(+) T cell peptide epitopes from HSV-1 glycoprotein D (gD(53-61), gD(70-78), and gD(278-286)) were joined with a promiscuous human CD4(+) T cell peptide epitope (gD(49-82)) to construct three separate pairs of CD4-CD8 peptides. Each CD4-CD8 peptide pair was then covalently linked to an N(epsilon)-palmitoyl-lysine residue via a functional base lysine amino group to construct CD4-CD8 lipopeptides. HLA Tg rabbits were immunized s.c. with a mixture of the three CD4-CD8 HSV-1 gD lipopeptides. The HSV-gD-specific T cell responses induced by the mixture of CD4-CD8 lipopeptide vaccine and the protective efficacy against acute virus replication and ocular disease were determined. Immunization induced HSV-gD(49-82)-specific CD4(+) T cells in draining lymph node (DLN); induced HLA-restricted HSV-gD(53-61), gD(70-78), and gD(278-286)-specific CD8(+) T cells in DLN, conjunctiva, and trigeminal ganglia and reduced HSV-1 replication in tears and corneal eye disease after ocular HSV-1 challenge. In addition, the HSV-1 epitope-specific CD8(+) T cells induced in DLNs, conjunctiva, and the trigeminal ganglia were inversely proportional with corneal disease. The humanized HLA Tg rabbits appeared to be a useful preclinical animal model for investigating the immunogenicity and protective efficacy of human CD8(+) T cell epitope-based prophylactic vaccines against ocular herpes. The relevance of HLA Tg rabbits for future investigation of human CD4-CD8 epitope-based therapeutic vaccines against recurrent HSV-1 is discussed.
Collapse
Affiliation(s)
- Aziz A. Chentoufi
- Laboratory of Cellular and Molecular Immunology, The Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697
| | - Gargi Dasgupta
- Laboratory of Cellular and Molecular Immunology, The Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697
| | | | - Jiafen Hu
- Hershey Medical Center, Pennsylvania State University, Hershey, PA 17033
| | - Zareen S. Choudhury
- Laboratory of Cellular and Molecular Immunology, The Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697
| | - Arfan Azeem
- Laboratory of Cellular and Molecular Immunology, The Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697
| | - James V. Jester
- Laboratory of Cellular and Molecular Immunology, The Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697
| | - Anthony B. Nesburn
- Laboratory of Cellular and Molecular Immunology, The Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697
| | - Steven L. Wechsler
- Laboratory of Cellular and Molecular Immunology, The Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697
- Department of Microbiology and Molecular Genetics, School of Medicine, University of California Irvine, Irvine, CA 92697
- The Center for Virus Research, University of California Irvine, Irvine, CA 92697
| | - Lbachir BenMohamed
- Laboratory of Cellular and Molecular Immunology, The Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697
- Institute for Immunology, University of California Irvine, Irvine, CA 92697
| |
Collapse
|
49
|
Abstract
Human papillomavirus (HPV) infections with oncogenic types account for approximately 500,000 deaths per year worldwide, predominantly in underdeveloped countries. The major cause of death is cervical cancer in women, but some additional cancers of the head and neck and anogenital sites also have an HPV etiology. Current virus-like particle-based vaccines are in clinical trials, and show very strong, long-lasting protection against vaccine-matched HPV types. These vaccines currently contain virus-like particles for the HPV types 6, 11, 16 and 18 (Gardasil®) and HPV16 and -18 (Cervarix®). Although type-specific neutralizing antibodies develop from immunizations with these virus-like particle vaccines, promising evidence for cross-protection against related but nonvaccine HPV types is emerging. Strategies to increase cross-protection to cover all oncogenic HPV types (currently approximately 20 types) are underway. These strategies include increasing the number of HPV types in the virus-like particle vaccine, and to the development of second-generation HPV vaccines that include the minor coat protein.
Collapse
Affiliation(s)
- ND Christensen
- Penn State University, College of Medicine, 500 University Drive, Hershey, PA 17033, USA
| | - CE Bounds
- Penn State University, College of Medicine, 500 University Drive, Hershey, PA 17033, USA
| |
Collapse
|
50
|
Abstract
Human papillomavirus (HPV) 58 is a high-risk HPV type associated with progression to invasive genital carcinomas. We developed six monoclonal antibodies (mAbs) against HPV58 L1 virus-like particles that bind conformational epitopes on HPV58. The hybridoma cell lines were adapted to serum- and animal component-free conditions and the mAb supernatants were affinity-purified. The six mAbs neutralized HPV58 pseudoviruses (PsVs) and 'quasivirions' with different capacities. The mAbs differed in their ability to prevent PsV58 attachment to HaCaT cells, to the extracellular matrix (ECM) deposited by HaCaT cells, to heparin and to purified human laminin 5, a protein in the ECM. These mAbs provide a unique set of tools to study the binding properties of a previously untested, high-risk HPV type and the opportunity to compare these characteristics with the binding of other HPV types.
Collapse
Affiliation(s)
- Sarah A. Brendle
- The Jake Gittlen Cancer Research Foundation and Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Timothy D. Culp
- The Jake Gittlen Cancer Research Foundation and Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Tatevik R. Broutian
- The Jake Gittlen Cancer Research Foundation and Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Neil D. Christensen
- The Jake Gittlen Cancer Research Foundation and Department of Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
- Milton S. Hershey Medical Center, C7800, 500 University Drive, Hershey, PA 17033, USA
| |
Collapse
|