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Akamine P, González-Feliciano JA, Almodóvar R, Morell G, Rivera J, Capó-Vélez CM, Delgado-Vélez M, Prieto-Costas L, Madera B, Eichinger D, Pino I, Rivera JH, Ortiz-Ubarri J, Rivera JM, Baerga-Ortiz A, Lasalde-Dominicci JA. Optimizing the Production of gp145, an HIV-1 Envelope Glycoprotein Vaccine Candidate and Its Encapsulation in Guanosine Microparticles. Vaccines (Basel) 2023; 11:vaccines11050975. [PMID: 37243079 DOI: 10.3390/vaccines11050975] [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: 03/19/2023] [Revised: 04/14/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023] Open
Abstract
We have developed a pipeline to express, purify, and characterize HIV envelope protein (Env) gp145 from Chinese hamster ovary cells, to accelerate the production of a promising vaccine candidate. First in shake flasks, then in bioreactors, we optimized the growth conditions. By adjusting the pH to 6.8, we increased expression levels to 101 mg/L in a 50 L bioreactor, nearly twice the previously reported titer value. A battery of analytical methods was developed in accordance with current good manufacturing practices to ensure a quality biopharmaceutical. Imaged capillary isoelectric focusing verified proper glycosylation of gp145; dynamic light scattering confirmed the trimeric arrangement; and bio-layer interferometry and circular dichroism analysis demonstrated native-like properties (i.e., antibody binding and secondary structure). MALDI-TOF mass spectrometry was used as a multi-attribute platform for accurate mass determination, glycans analysis, and protein identification. Our robust analysis demonstrates that our gp145 product is very similar to a reference standard and emphasizes the importance of accurate characterization of a highly heterogeneous immunogen for the development of an effective vaccine. Finally, we present a novel guanosine microparticle with gp145 encapsulated and displayed on its surface. The unique properties of our gp145 microparticle make it amenable to use in future preclinical and clinical trials.
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Affiliation(s)
- Pearl Akamine
- Clinical Bioreagent Center, Molecular Sciences Research Center, University of Puerto Rico, San Juan 00926, Puerto Rico
| | - José A González-Feliciano
- Clinical Bioreagent Center, Molecular Sciences Research Center, University of Puerto Rico, San Juan 00926, Puerto Rico
| | | | | | | | - Coral M Capó-Vélez
- Clinical Bioreagent Center, Molecular Sciences Research Center, University of Puerto Rico, San Juan 00926, Puerto Rico
| | - Manuel Delgado-Vélez
- Clinical Bioreagent Center, Molecular Sciences Research Center, University of Puerto Rico, San Juan 00926, Puerto Rico
- Department of Biology, Río Piedras Campus, University of Puerto Rico, San Juan 00931, Puerto Rico
| | - Luis Prieto-Costas
- Department of Chemistry, Río Piedras Campus, University of Puerto Rico, San Juan 00925, Puerto Rico
| | - Bismark Madera
- Clinical Bioreagent Center, Molecular Sciences Research Center, University of Puerto Rico, San Juan 00926, Puerto Rico
- Department of Biology, Río Piedras Campus, University of Puerto Rico, San Juan 00931, Puerto Rico
| | | | | | | | - José Ortiz-Ubarri
- Department of Computer Sciences, Río Piedras Campus, University of Puerto Rico, San Juan 00925, Puerto Rico
| | - José M Rivera
- Department of Chemistry, Río Piedras Campus, University of Puerto Rico, San Juan 00925, Puerto Rico
| | - Abel Baerga-Ortiz
- Clinical Bioreagent Center, Molecular Sciences Research Center, University of Puerto Rico, San Juan 00926, Puerto Rico
- Department of Biochemistry, Medical Sciences Campus, University of Puerto Rico, San Juan 00936, Puerto Rico
| | - José A Lasalde-Dominicci
- Clinical Bioreagent Center, Molecular Sciences Research Center, University of Puerto Rico, San Juan 00926, Puerto Rico
- Department of Biology, Río Piedras Campus, University of Puerto Rico, San Juan 00931, Puerto Rico
- Department of Chemistry, Río Piedras Campus, University of Puerto Rico, San Juan 00925, Puerto Rico
- Institute of Neurobiology, Medical Sciences Campus, University of Puerto Rico, San Juan 00901, Puerto Rico
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Almodóvar R, Carmona L, Zarco P, Collantes E, González C, Mulero J, Sueiro JLF, Gratacós J, Torre-Alonso JC, Juanola X, Batlle E, Ariza R, Font P. Fibromyalgia in patients with ankylosing spondylitis: prevalence and utility of the measures of activity, function and radiological damage. Clin Exp Rheumatol 2010; 28:S33-S39. [PMID: 21176420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2009] [Accepted: 02/02/2010] [Indexed: 05/30/2023]
Abstract
OBJECTIVES To determine the prevalence of fibromyalgia (FM) in ankylosing spondylitis (AS). To evaluate the effect of FM on the measures of activity in AS. To analyse predictive factors in order to identify this group of patients. PATIENTS AND METHODS A cross-sectional study based on 462 patients with definite ankylosing spondylitis included in the REGISPONSER. Sociodemographic data, clinical features, Bath AS disease activity index (BASDAI), Bath AS functional index (BASFI), Bath AS radiology index (BASRI), Stoke modified index (Sasss-m), laboratory data, Short-Format 12 (SF-12), AS specific quality of life (ASQoL), Fibromyalgia Impact Questionnaire (FIQ) and treatments used were all documented. To diagnose FM, the ACR 1990 criteria had to be fulfilled. All statistical tests were performed using STATA. RESULTS The prevalence of fibromyalgia in all AS was 4.11%. Among the women with AS, the prevalence of FM increased to 10.83%. The BASDAI, BASFI and total BASRI were strongly influenced by the presence of FM. The inverse relationship between BASDAI or BASFI and total BASRI was taken to generate a ratio. Accordingly, if the patient presented BASDAI/BASRI ≥1.5 or BASFI/BASRI ≥1.08, the probability of having FM was very high. CONCLUSIONS There is an increased risk of FM in females with AS. The fact of having FM distorts the measures of activity and functional damage of AS. As a result, it is possible that some patients with AS and FM are being overtreated. The BASDAI/BASRI and BASFI/BASRI ratios are very useful to identify these patients.
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Affiliation(s)
- R Almodóvar
- Rheumatology Unit, Hospital Universitario Fundación Alcorcón, Madrid, Spain.
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Almodóvar R, Zarco P, Collantes E, González C, Mulero J, Fernández-Sueiro JL, Gratacós J, Torres-Alonso JC, Juanola X, Batlle E, Ariza R, Muñoz E. Relationship between spinal mobility and disease activity, function, quality of life and radiology. A cross-sectional Spanish registry of spondyloarthropathies (REGISPONSER). Clin Exp Rheumatol 2009; 27:439-445. [PMID: 19604436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVE To determine the relationship between anthropometric measurements and disease activity, functional capacity, quality of life and radiology in Spanish patients with ankylosing spondylitis (AS). PATIENTS AND METHODS A cross-sectional study was made of 842 patients with definite ankylosing spondylitis (REGISPONSER). Sociodemographic data, spinal mobility measurements, Bath AS disease activity index (BASDAI), nocturnal pain, Bath AS radiology index (BASRI), Bath AS functional index (BASFI), the Short-Format 12 (SF-12) and the AS specific quality of life (ASQoL) questionnaire were applied. Pearson correlation coefficient analysis and regression models were constructed. RESULTS There was moderate correlation between fingertip-to-floor distance and lateral cervical rotation with the BASFI (p<0.01). Good correlation was evident between wall-occiput distance and lateral cervical rotation with the BASRI (p<0.01). Moderate correlation was found between chest expansion, the Schober modified test and fingertip-to-floor distance with the total BASRI (p<0.01). The anthropometric measurement with the lowest correlation value was lateral lumbar flexion. Significant association was found between the Schober modified test and BASFI, BASDAI and BASRI (R(2) = 0.37; p<0.001); chest expansion and BASFI, BASDAI and BASRI (R(2) = 0.25; p<0.001); wall-occiput distance and BASFI, BASRI and ASQoL (R(2) = 0.44; p<0.001); fingertip-to-floor distance and BASFI and BASRI (R(2) = 0.30; p<0.001); and lateral cervical rotation and BASFI and BASRI (R(2) = 0.34; p<0.001). CONCLUSION In our study, wall-occiput distance and lateral cervical rotation showed the strongest correlation to BASRI. Similarly, fingertip-to-floor distance and lateral cervical rotation exhibited the closest correlation to BASFI.
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Affiliation(s)
- R Almodóvar
- Department of Rheumatology, Alcorcon Foundation Universitary Hospital, Madrid, Spain.
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Almodóvar R, Izquierdo M, Zarco P, Javier Quirós F, Mazzucchelli R, Steen B. Pulmonary sarcoidosis in a patient with ankylosing spondylitis treated with infliximab. Clin Exp Rheumatol 2007; 25:99-101. [PMID: 17417999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
We present a case of a 34 year-old male diagnosed with ankylosing spondylitis. After two years of treatment with infliximab, the patient developed a clinical picture compatible with stage II thoracic sarcoidosis. These findings resulted in the interruption of infliximab therapy. The patient was not administered new treatment since respiratory function testing did not confirm harmful repercussions. After a follow-up of 1 year, the patient is asymptomatic and radiologic tests show complete resolution of pulmonary infiltrates and mediastinal and bilateral hilar lymphad- enopathy.
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Affiliation(s)
- R Almodóvar
- Rheumatology Unit, Alcorcón Hospital Foundation, Madrid, Spain.
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