Immunotherapy के लिए ट्यूमर एंटीजन से भरी हुई परिपक्व वृक्ष के समान कोशिकाओं की तैयारी
Summary
ट्यूमर प्रतिरक्षा चिकित्सा में उपयोग के लिए ऑटोलॉगस वृक्ष के समान कोशिकाओं की बड़ी संख्या (डीसी) पैदा करने के लिए सबसे अधिक इस्तेमाल किया विधि वर्णित है. विधि monocytes से डीसी अंतर करने के लिए आईएल -4 और जीएम-CSF का उपयोग करता है. वे रोगी में वापस इंजेक्शन हैं पहले अपरिपक्व डीसी परिपक्व और फिर एंटीजन के साथ लोड करने के लिए प्रेरित कर रहे हैं.
Abstract
While clinical studies have established that antigen-loaded DC vaccines are safe and promising therapy for tumors 1, their clinical efficacy remains to be established. The method described below, prepared in accordance with Good Manufacturing Process (GMP) guidelines, is an optimization of the most common ex vivo preparation method for generating large numbers of DCs for clinical studies 2.
Our method utilizes the synthetic TLR 3 agonist Polyinosinic-Polycytidylic Acid-poly-L-lysine Carboxymethylcellulose (Poly-ICLC) to stimulate the DCs. Our previous study established that Poly-ICLC is the most potent individual maturation stimulus for human DCs as assessed by an upregulation of CD83 and CD86, induction of interleukin-12 (IL-12), tumor necrosis factor (TNF), interferon gamma-induced protein 10 (IP-10), interleukmin 1 (IL-1), and type I interferons (IFN), and minimal interleukin 10 (IL-10) production.
DCs are differentiated from frozen peripheral blood mononuclear cells (PBMCs) obtained by leukapheresis. PBMCs are isolated by Ficoll gradient centrifugation and frozen in aliquots. On Day 1, PBMCs are thawed and plated onto tissue culture flasks to select for monocytes which adhere to the plastic surface after 1-2 hr incubation at 37 °C in the tissue culture incubator. After incubation, the lymphocytes are washed off and the adherent monocytes are cultured for 5 days in the presence of interleukin-4 (IL-4) and granulocyte macrophage-colony stimulating factor (GM-CSF) to differentiate to immature DCs. On Day 6, immature DCs are pulsed with the keyhole limpet hemocyanin (KLH) protein which serves as a control for the quality of the vaccine and may boost the immunogenicity of the vaccine 3. The DCs are stimulated to mature, loaded with peptide antigens, and incubated overnight. On Day 7, the cells are washed, and frozen in 1 ml aliquots containing 4 – 20 x 106 cells using a controlled-rate freezer. Lot release testing for the batches of DCs is performed and must meet minimum specifications before they are injected into patients.
Protocol
Representative Results
Discussion
प्रथम चरण और द्वितीय monocyte व्युत्पन्न DCs की क्लिनिकल परीक्षण वे रोगियों लेकिन नैदानिक सफलता 1 सीमित किया गया है में प्रतिरक्षा प्रतिक्रिया को प्रेरित दिखाया है. यह ट्यूमर immunotherapeutic उपयोग के लिए इष्टत?…
Disclosures
The authors have nothing to disclose.
Acknowledgements
लेखकों पाली ICLC के उपहार के लिए एन्ड्रेस Salazar (Oncovir, इंक) को धन्यवाद देना चाहूंगा.
Materials
| Reagent/Supplies/Equipment | Manufacturer | Catalog No. | |
| RPMI-1640 medium with L-glutamine | BioWhittaker | 12-702F | |
| 1M HEPES buffered saline | BioWhittaker | 17-737E | |
| Phosphate buffered saline (PBS) | BioWhittaker | 17-516F | |
| Human albumin, 25% solution USP | Aventis Behring | ||
| Ficoll-Hypaque PREMIUM | GE Healthcare | 17-5442-03 | |
| Human AB serum | Valley Biomedical | HP1022 | |
| Sterile saline USP | Hospira | ||
| CryoMACS DMSO | Miltenyi Biotec | 170-076-303 | |
| Leukine GM-CSF, 0.5 mg/ml | Berlex | A02266 | |
| MACS GMP IL-4 | Miltenyi Biotec | 170-076-101 | |
| Hiltonol, Poly-ICLC, 2 mg/ml | Oncovir | NA | |
| VACMUNE KLH | Biosyn | ||
| 225 sq cm EasyFlasks | Nalgene Nunc | 159934 | |
| Falcon 6-well tissue culture plates | Becton Dickinson | 353046 | |
| 1.8 ml CryoTube vials | Nalgene Nunc | 377267 | |
| Controlled Rate Freezer | Thermo | CryoMed |
References
- Lesterhuis, W. J., et al. Dendritic cell vaccines in melanoma: from promise to proof. Crit. Rev. Oncol. Hematol. 66, 118-134 (2008).
- Sabado, R. L., Bhardwaj, N. Directing dendritic cell immunotherapy towards successful cancer treatment. Immunotherapy. 2, 37-56 (2010).
- Schumacher, K. Keyhole limpet hemocyanin (KLH) conjugate vaccines as novel therapeutic tools in malignant disorders. J. Cancer. Res. Clin. Oncol. 127, 1-2 (2001).
- Jaatinen, T., Laine, J. Isolation of mononuclear cells from human cord blood by Ficoll-Paque density gradient. Curr. Protoc. Stem Cell Biol. Chapter 2, Unit 2A 1 (2007).
- Eichler, H., et al. Multicenter study on in vitro characterization of dendritic cells. Cytotherapy. 10, 21-29 (2008).
- Feuerstein, B., et al. A method for the production of cryopreserved aliquots of antigen-preloaded, mature dendritic cells ready for clinical use. J. Immunol. Methods. 245, 15-29 (2000).
- O’Neill, D., Bhardwaj, N. Generation of autologous peptide- and protein-pulsed dendritic cells for patient-specific immunotherapy. Methods Mol. Med. 109, 97-112 (2005).
- de Vries, I. J., et al. Phenotypical and functional characterization of clinical grade dendritic cells. J. Immunother. 25, 429-438 (2002).
- Jonuleit, H., et al. Pro-inflammatory cytokines and prostaglandins induce maturation of potent immunostimulatory dendritic cells under fetal calf serum-free conditions. Eur. J. Immunol. 27, 3135-3142 (1997).
- Lee, A. W., et al. A clinical grade cocktail of cytokines and PGE2 results in uniform maturation of human monocyte-derived dendritic cells: implications for immunotherapy. Vaccine. 20, A8-A22 (2002).
- Bhardwaj, N. Harnessing the immune system to treat cancer. J. Clin. Invest. 117, 1130-1136 (2007).
- Gnjatic, S., Sawhney, N. B., Bhardwaj, N. Toll-like receptor agonists: are they good adjuvants?. Cancer J. 16, 382-391 (2010).
- Kedl, R. M., Kappler, J. W., Marrack, P. Epitope dominance, competition and T cell affinity maturation. Curr. Opin. Immunol. 15, 120-127 (2003).
- Bogunovic, D., et al. TLR4 engagement during TLR3-induced proinflammatory signaling in dendritic cells promotes IL-10-mediated suppression of antitumor immunity. 암 연구학. 71, 5467-5476 (2011).
- Verdijk, R. M., et al. Polyriboinosinic polyribocytidylic acid (poly(I:C)) induces stable maturation of functionally active human dendritic cells. J. Immunol. 163, 57-61 (1999).
- Rouas, R., et al. Poly(I:C) used for human dendritic cell maturation preserves their ability to secondarily secrete bioactive IL-12. Int. Immunol. 16, 767-773 (2004).
- Jongmans, W., Tiemessen, D. M., van Vlodrop, I. J., Mulders, P. F., Oosterwijk, E. Th1-polarizing capacity of clinical-grade dendritic cells is triggered by Ribomunyl but is compromised by PGE2: the importance of maturation cocktails. J. Immunother. 28, 480-487 (2005).
- Krause, P., et al. Prostaglandin E2 is a key factor for monocyte-derived dendritic cell maturation: enhanced T cell stimulatory capacity despite IDO. J. Leukoc. Biol. 82, 1106-1114 (2007).
- Morelli, A. E., Thomson, A. W. Dendritic cells under the spell of prostaglandins. Trends Immunol. 24, 108-111 (2003).
- Adams, M., et al. Dendritic cell (DC) based therapy for cervical cancer: use of DC pulsed with tumour lysate and matured with a novel synthetic clinically non-toxic double stranded RNA analogue poly [I]:poly [C(12)U] (Ampligen R). Vaccine. 21 (12), 787-790 (2003).
- Colombo, M. P., Trinchieri, G. Interleukin-12 in anti-tumor immunity and immunotherapy. Cytokine Growth Factor Rev. 13, 155-168 (2002).
- Mayordomo, J. I., et al. Bone marrow-derived dendritic cells pulsed with synthetic tumour peptides elicit protective and therapeutic antitumour immunity. Nat Med. 1, 1297-1302 (1995).
- Dhodapkar, M. V., et al. Rapid generation of broad T-cell immunity in humans after a single injection of mature dendritic cells. J. Clin. Invest. 104, 173-180 (1999).
- Schuler-Thurner, B., et al. Rapid induction of tumor-specific type 1 T helper cells in metastatic melanoma patients by vaccination with mature, cryopreserved, peptide-loaded monocyte-derived dendritic cells. J. Exp. Med. 195, 1279-1288 (2002).
