Generation of MANAbodies specific to HLA-restricted epitopes encoded by somatically mutated genes
Andrew D. Skora,Jacqueline Douglass,Michael S. Hwang,Ada J. Tam,Richard L. Blosser,Sandra B. Gabelli,Jianhong Cao,Luis A. Diaz,Nickolas Papadopoulos,Kenneth W. Kinzler,Bert Vogelstein,Shibin Zhou +11 more
TLDR
An approach to identify single-chain variable fragments specific for mutant peptides presented on the cell surface by HLA molecules and demonstrates that these scFvs can be successfully converted to full-length antibodies, termed MANAbodies, targeting “Mutation-Associated Neo-Antigens” bound to HLA.Abstract:
Mutant epitopes encoded by cancer genes are virtually always located in the interior of cells, making them invisible to conventional antibodies. We here describe an approach to identify single-chain variable fragments (scFvs) specific for mutant peptides presented on the cell surface by HLA molecules. We demonstrate that these scFvs can be successfully converted to full-length antibodies, termed MANAbodies, targeting "Mutation-Associated Neo-Antigens" bound to HLA. A phage display library representing a highly diverse array of single-chain variable fragment sequences was first designed and constructed. A competitive selection protocol was then used to identify clones specific for mutant peptides bound to predefined HLA types. In this way, we obtained two scFvs, one specific for a peptide encoded by a common KRAS mutant and the other by a common epidermal growth factor receptor (EGFR) mutant. The scFvs bound to these peptides only when the peptides were complexed with HLA-A2 (KRAS peptide) or HLA-A3 (EGFR peptide). We converted one scFv to a full-length antibody (MANAbody) and demonstrate that the MANAbody specifically reacts with mutant peptide-HLA complex even when the peptide differs by only one amino acid from the normal, WT form.read more
Citations
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Elective nodal irradiation attenuates the combinatorial efficacy of stereotactic radiation therapy and immunotherapy
Ariel E. Marciscano,Ali Ghasemzadeh,Thomas R. Nirschl,Debebe Theodros,Christina M. Kochel,Brian Francica,Yuki Muroyama,Robert A. Anders,Andrew B. Sharabi,Esteban Velarde,Wendy Mao,Kunal R. Chaudhary,Matthew G. Chaimowitz,John Wong,Mark J. Selby,Kent B. Thudium,Alan J. Korman,David Ulmert,Daniel L.J. Thorek,Theodore L. DeWeese,Charles G. Drake +20 more
TL;DR: It is highlighted that irradiation of the DLN restrains adaptive immune responses through altered chemokine expression and CD8+ T-cell trafficking and has implications for combining radiotherapy and ICB, long-term survival, and induction of immunologic memory.
Journal ArticleDOI
Targeting a neoantigen derived from a common TP53 mutation
Emily Han-Chung Hsiue,Emily Han-Chung Hsiue,Katharine M. Wright,Katharine M. Wright,Jacqueline Douglass,Jacqueline Douglass,Michael S. Hwang,Michael S. Hwang,Brian J. Mog,Alexander H. Pearlman,Alexander H. Pearlman,Suman Paul,Sarah R. DiNapoli,Sarah R. DiNapoli,Maximilian F. Konig,Qing Wang,Qing Wang,Annika Schaefer,Annika Schaefer,Michelle S. Miller,Michelle S. Miller,Andrew D. Skora,Andrew D. Skora,P. Aitana Azurmendi,P. Aitana Azurmendi,Michael B. Murphy,Liu Qiang,Liu Qiang,Evangeline Watson,Evangeline Watson,Yana Li,Drew M. Pardoll,Chetan Bettegowda,Nickolas Papadopoulos,Kenneth W. Kinzler,Bert Vogelstein,Sandra B. Gabelli,Shibin Zhou +37 more
TL;DR: In this paper, the authors describe the identification of an antibody highly specific to the most common TP53 mutation (R175H, in which arginine at position 175 is replaced with histidine) in complex with a common human leukocyte antigen-A (HLA-A) allele on the cell surface.
Journal ArticleDOI
Bispecific antibodies targeting mutant RAS neoantigens.
Jacqueline Douglass,Jacqueline Douglass,Emily Han-Chung Hsiue,Emily Han-Chung Hsiue,Brian J. Mog,Michael S. Hwang,Michael S. Hwang,Sarah R. DiNapoli,Sarah R. DiNapoli,Alexander H. Pearlman,Alexander H. Pearlman,Michelle S. Miller,Michelle S. Miller,Katharine M. Wright,Katharine M. Wright,P. Aitana Azurmendi,P. Aitana Azurmendi,Qing Wang,Qing Wang,Suman Paul,Annika Schaefer,Annika Schaefer,Andrew D. Skora,Andrew D. Skora,Marco Dal Molin,Marco Dal Molin,Maximilian F. Konig,Liu Qiang,Liu Qiang,Evangeline Watson,Evangeline Watson,Yana Li,Michael B. Murphy,Drew M. Pardoll,Chetan Bettegowda,Nickolas Papadopoulos,Sandra B. Gabelli,Kenneth W. Kinzler,Bert Vogelstein,Shibin Zhou +39 more
TL;DR: In this article, single-chain variable fragments (scFvs) were used to identify peptides derived from recurrent RAS mutations, G12V and Q61H/L/R, in the context of two common human leukocyte antigen (HLA) alleles.
Journal ArticleDOI
TSNAD: an integrated software for cancer somatic mutation and tumour-specific neoantigen detection
Zhan Zhou,Xingzheng Lyu,Jingcheng Wu,Xiaoyue Yang,Shanshan Wu,Jie Zhou,Xun Gu,Zhixi Su,Shuqing Chen +8 more
TL;DR: This study developed software called the tumour-specific neoantigen detector for detecting cancer somatic mutations following the best practices of the genome analysis toolkit and predicting potential tumours- specific neoantigens, which could be either extracellular mutations of membrane proteins or mutated peptides presented by class I major histocompatibility complex molecules.
Journal ArticleDOI
Targeting public neoantigens for cancer immunotherapy.
Alexander H. Pearlman,Alexander H. Pearlman,Michael S. Hwang,Maximilian F. Konig,Emily Han-Chung Hsiue,Emily Han-Chung Hsiue,Jacqueline Douglass,Jacqueline Douglass,Sarah R. DiNapoli,Sarah R. DiNapoli,Brian J. Mog,Chetan Bettegowda,Drew M. Pardoll,Sandra B. Gabelli,Nicholas Papadopoulos,Kenneth W. Kinzler,Bert Vogelstein,Shibin Zhou +17 more
TL;DR: The opportunities and challenges involved in the identification of suitable public neoantigen targets and the development of therapeutic agents targeting them are reviewed.
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