Differential Regulation of the Immune Response to SRBC by Monoclonal Antibodies to Interferon- 

1989 ◽  
Vol 191 (1) ◽  
pp. 55-59 ◽  
Author(s):  
S. W. Helman ◽  
J. H. Wallace
Biomolecules ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 993
Author(s):  
Renuka Raman ◽  
Krishna J. Patel ◽  
Kishu Ranjan

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the etiological agent of the coronavirus disease 2019 (COVID-19) pandemic, which has been a topic of major concern for global human health. The challenge to restrain the COVID-19 pandemic is further compounded by the emergence of several SARS-CoV-2 variants viz. B.1.1.7 (Alpha), B.1.351 (Beta), P1 (Gamma) and B.1.617.2 (Delta), which show increased transmissibility and resistance towards vaccines and therapies. Importantly, there is convincing evidence of increased susceptibility to SARS-CoV-2 infection among individuals with dysregulated immune response and comorbidities. Herein, we provide a comprehensive perspective regarding vulnerability of SARS-CoV-2 infection in patients with underlying medical comorbidities. We discuss ongoing vaccine (mRNA, protein-based, viral vector-based, etc.) and therapeutic (monoclonal antibodies, small molecules, plasma therapy, etc.) modalities designed to curb the COVID-19 pandemic. We also discuss in detail, the challenges posed by different SARS-CoV-2 variants of concern (VOC) identified across the globe and their effects on therapeutic and prophylactic interventions.


2018 ◽  
Vol 50 (1) ◽  
pp. 277-283 ◽  
Author(s):  
Tanapon Soonthonsrima ◽  
Pradit Wangman ◽  
Parin Chaivisuthangkura ◽  
Chalinan Pengsuk ◽  
Paisarn Sithigorngul ◽  
...  

2015 ◽  
Vol 57 (suppl 19) ◽  
pp. 21-24 ◽  
Author(s):  
Carlos. P. TABORDA ◽  
M.E. URÁN ◽  
J. D. NOSANCHUK ◽  
L.R. TRAVASSOS

SUMMARYParacoccidioidomycosis (PCM), caused by Paracoccidioides spp, is an important endemic mycosis in Latin America. There are two recognized Paracoccidioides species, P. brasiliensis and P. lutzii, based on phylogenetic differences; however, the pathogenesis and disease manifestations of both are indistinguishable at present. Approximately 1,853 (~51,2%) of 3,583 confirmed deaths in Brazil due to systemic mycoses from 1996-2006 were caused by PCM. Antifungal treatment is required for patients with PCM. The initial treatment lasts from two to six months and sulfa derivatives, amphotericin B, azoles and terbinafine are used in clinical practice; however, despite prolonged therapy, relapses are still a problem. An effective Th1-biased cellular immune response is essential to control the disease, which can be induced by exogenous antigens or modulated by prophylactic or therapeutic vaccines. Stimulation of B cells or passive transference of monoclonal antibodies are also important means that may be used to improve the efficacy of paracoccidioidomycosis treatment in the future. This review critically details major challenges facing the development of a vaccine to combat PCM.


2021 ◽  
Vol 12 ◽  
Author(s):  
Chengchao Ding ◽  
Jun He ◽  
Xiangyu Zhang ◽  
Chengcheng Jiang ◽  
Yong Sun ◽  
...  

Small number of SARS-CoV-2 epidemic lineages did not efficiently exhibit a neutralization profile, while single amino acid mutation in the spike protein has not been confirmed in altering viral antigenicity resulting in immune escape. To identify crucial mutations in spike protein that escape humoral immune response, we evaluated the cross-neutralization of convalescent plasmas and RBD-specific monoclonal antibodies (mAbs) against various spike protein-based pseudoviruses. Three of 24 SARS-CoV-2 pseudoviruses containing different mutations in spike protein, including D614G, A475V, and E484Q, consistently showed an altered sensitivity to neutralization by convalescent plasmas. A475V and E484Q mutants are highly resistant to neutralization by mAb B38 and 2-4, suggesting that some crucial mutations in spike protein might evolve SARS-CoV-2 variants capable of escaping humoral immune response.


2011 ◽  
Vol 2011 ◽  
pp. 1-12 ◽  
Author(s):  
F. Pandolfi ◽  
R. Cianci ◽  
D. Pagliari ◽  
F. Casciano ◽  
C. Bagalà ◽  
...  

Until recently cancer medical therapy was limited to chemotherapy that could not differentiate cancer cells from normal cells. More recently with the remarkable mushroom of immunology, newer tools became available, resulting in the novel possibility to attack cancer with the specificity of the immune system. Herein we will review some of the recent achievement of immunotherapy in such aggressive cancers as melanoma, prostatic cancer, colorectal carcinoma, and hematologic malignancies. Immunotherapy of tumors has developed several techniques: immune cell transfer, vaccines, immunobiological molecules such as monoclonal antibodies that improve the immune responses to tumors. This can be achieved by blocking pathways limiting the immune response, such as CTLA-4 or Tregs. Immunotherapy may also use cytokines especially proinflammatory cytokines to enhance the activity of cytotoxic T cells (CTLs) derived from tumor infiltrating lymphocytes (TILs). The role of newly discovered cytokines remains to be investigated. Alternatively, an other mechanism consists in enhancing the expression of TAAs on tumor cells. Finally, monoclonal antibodies may be used to target oncogenes.


2018 ◽  
Vol 12 ◽  
pp. 117822341877480 ◽  
Author(s):  
Issam Makhoul ◽  
Mohammad Atiq ◽  
Ahmed Alwbari ◽  
Thomas Kieber-Emmons

The immune system plays a major role in cancer surveillance. Harnessing its power to treat many cancers is now a reality that has led to cures in hopeless situations where no other solutions were available from traditional anticancer drugs. These spectacular achievements rekindled the oncology community’s interest in extending the benefits to all cancers including breast cancer. The first section of this article reviews the biological foundations of the immune response to different subtypes of breast cancer and the ways cancer may overcome the immune attack leading to cancer disease. The second section is dedicated to the actual immune treatments including breast cancer vaccines, checkpoint inhibitors, monoclonal antibodies, and the “unconventional” immune role of chemotherapy.


Principles 250 Immunotherapy 252 Monoclonal antibodies 254 Other biological therapies 258 Biological therapies aim to produce an anti-tumour effect, either by activating the patient's immune system, or by administering natural substances present in the immune system as treatments. These treatments cause an immune response in the patient that eliminates or delays tumour growth....


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