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https://www.readbyqxmd.com/read/28811978/development-and-characterization-of-naive-single-type-tumor-antigen-specific-cd8-t-lymphocytes-from-murine-pluripotent-stem-cells
#1
Fengyang Lei, Mohammad Haque, Praneet Sandhu, Swetha Ravi, Jianyong Song, Bing Ni, Songguo Zheng, Deyu Fang, Hongyan Jia, Jin-Ming Yang, Jianxun Song
Optimal approaches to differentiate tumor antigen-specific cytotoxic T lymphocytes (CTLs) from pluripotent stem cells (PSCs) remain elusive. In the current study, we showed that combination of in vitro priming through Notch ligands and in vivo development facilitated the generation of tumor Ag-specific CTLs that effectively inhibited tumor growth. We co-cultured the murine induced PSCs (iPSCs) genetically modified with tyrosinase-related protein 2 (TRP2)-specific T cell receptors with OP9 cell line expressing both Notch ligands Delta-like 1 and 4 (OP9-DL1/DL4) for a week before adoptively transferred into recipient C67BL/6 mice...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28808502/clinical-significance-of-tumor-infiltrating-lymphocytes-for-gastric-cancer-in-the-era-of-immunology
#2
REVIEW
Byung Woog Kang, Jong Gwang Kim, In Hee Lee, Han Ik Bae, An Na Seo
Immunotherapy has begun to revolutionize cancer treatment, by introducing therapies that target the host immune system instead of the tumor, therapies that possess unique adverse event profiles, and therapies that may cure certain types of cancer. The immune microenvironment of tumors is emerging as the most important means of understanding the relationship between a patient' immune system and their cancer, informing prognosis, and guiding immunotherapy, such as an antibody blockade of immune checkpoints. For some solid tumors, simple quantitation of lymphocyte infiltration would seem to have prognostic significance, suggesting that lymphocyte infiltration is not passive but may actively promote or inhibit tumor growth...
July 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28807336/programmed-death-1-pd-1-receptor-pd-1-ligand-pd-l1-expression-in-fumarate-hydratase-deficient-renal-cell-carcinoma
#3
Reza Alaghehbandan, Jan Stehlik, Kiril Trpkov, Cristina Magi-Galluzzi, Enric Condom Mundo, Maria Pane Foix, Daniel Berney, Mathilde Sibony, Saul Suster, Abbas Agaimy, Delia Perez Montiel, Kristyna Pivovarcikova, Kvetoslava Michalova, Ondrej Daum, Ondrej Ondic, Pavla Rotterova, Martin Dusek, Milan Hora, Michal Michal, Ondrej Hes
Fumarate hydratase-deficient renal cell carcinoma (FH-RCC) is a rare and aggressive tumor affecting mostly younger patients. This is the first study to assess the expression of programmed death-1 (PD-1) receptor/PD-1 ligand (PD-L1) in FH-RCC. Formalin-fixed paraffin-embedded samples from 13 FH-RCCs collected in an international multi-institutional study, were evaluated by immunohistochemistry (IHC) for PD-1/PD-L1 reactivity in tumor cells and tumor infiltrating lymphocytes (TILs). PD-1/PD-L1 expression was further evaluated by qPCR...
August 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28806299/the-dynamic-and-transient-immune-microenvironment-in-locally-advanced-esophageal-adenocarcinoma-post-chemoradiation
#4
Ronan J Kelly, Ali H Zaidi, Matthew A Smith, Ashten N Omstead, Juliann E Kosovec, Daisuke Matsui, Samantha A Martin, Christina DiCarlo, E Day Werts, Jan F Silverman, David H Wang, Blair A Jobe
OBJECTIVE: The aim of this study was to assess the impact of chemoradiation on the immune microenvironment to influence and optimally design future neoadjuvant clinical trials. SUMMARY BACKGROUND DATA: Programmed death (PD)-1 inhibitors in metastatic gastroesophageal cancer have demonstrated response rates of approximately 25% in programmed death ligand-1 (PD-L1+) tumors. Unfortunately, the majority of patients do not respond. Therefore, a rationale strategy of combining immunotherapeutic agents with chemoradiation in earlier stage esophageal cancer may prevent metastatic disease in patients...
August 10, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28805806/lung-tumor-exome-files-with-t-cell-receptor-recombinations-a-mouse-model-of-t-cell-infiltrates-reflecting-mutation-burdens
#5
Yaping N Tu, Wei Lue Tong, Timothy J Fawcett, George Blanck
Tumor exomes and RNASeq data were originally intended for obtaining tumor mutations and gene expression profiles, respectively. However, recent work has determined that tumor exome and RNAseq read files contain reads representing T-cell and B-cell receptor (TcR and BcR) recombinations, presumably due to infiltrating lymphocytes. Furthermore, the recovery of immune receptor recombination reads has demonstrated correlations with specific, previously appreciated aspects of tumor immunology. To further understand the usefulness of recovering TcR and BcR recombinations from tumor exome files, we developed a scripted algorithm for recovery of reads representing these recombinations from a previously described mouse model of lung tumorigenesis...
August 14, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28802495/the-immunology-of-melanoma
#6
REVIEW
Jennifer S Ko
The relatively high DNA mutational burden in melanoma allows for the creation of potentially "foreign," immune-stimulating neoantigens, and leads to its exceptional immunogenicity. Brisk tumor-infiltrating lymphocytes, a marker of immune editing, confer improved overall survival in melanoma, possibly due to reduced sentinel lymph node spread. Meanwhile, T-cell-stimulating drugs, so-called T-cell checkpoint inhibitors, which reverse peripheral tolerance-dependent tumor escape, have demonstrated unparalleled clinical success in metastatic melanoma...
September 2017: Clinics in Laboratory Medicine
https://www.readbyqxmd.com/read/28799813/tumor-infiltrating-lymphocytes-tils-may-be-only-an-independent-predictor-of-nodal-involvement-but-not-for-recurrence-and-survival-in-cutaneous-melanoma-patients
#7
Faruk Tas, Kayhan Erturk
Tumor infiltrating lymphocytes (TILs) invade and disrupt melanoma cells and their clinical roles remain controversial. In this study, we aimed to determine the clinical significance of the TILs status in cutaneous melanoma patients (CMPs). Of 750 CMPs enrolled into this study 486 (64.8%) had lesions with TILs. The patients with TILs more likely had nodular histology, presence of histological regression, and absence of regional lymph node involvement. However, its presence was not associated with outcome. In conclusion, presence of TILs may be only an independent predictor for absence of nodal involvement but it is not associated with recurrence and survival in CMPs...
August 11, 2017: Cancer Investigation
https://www.readbyqxmd.com/read/28799073/immunotherapy-in-breast-cancer-the-emerging-role-of-pd-1-and-pd-l1
#8
REVIEW
François Bertucci, Anthony Gonçalves
PURPOSE OF REVIEW: The purpose of the review is to summarize the data regarding PD-L1 expression in breast cancer and the results of first clinical trials with PD-1 or PD-L1 inhibitors in patients with metastatic breast cancer. RECENT FINDINGS: PD-L1 expression is heterogeneous across primary breast cancers, and is generally associated with the presence of tumor-infiltrating lymphocytes and the presence of poor-prognosis features such as high grade, and aggressive molecular subtypes (triple-negative (TN), basal, HER2-enriched)...
August 10, 2017: Current Oncology Reports
https://www.readbyqxmd.com/read/28798979/mucosa-associated-invariant-t-cells-infiltrate-hepatic-metastases-in-patients-with-colorectal-carcinoma-but-are-rendered-dysfunctional-within-and-adjacent-to-tumor-microenvironment
#9
Christopher R Shaler, Mauro E Tun-Abraham, Anton I Skaro, Khashayarsha Khazaie, Alexandra J Corbett, Tina Mele, Roberto Hernandez-Alejandro, S M Mansour Haeryfar
Mucosa-associated invariant T (MAIT) cells are innate-like T lymphocytes that are unusually abundant in the human liver, a common site of colorectal carcinoma (CRC) metastasis. However, whether they contribute to immune surveillance against colorectal liver metastasis (CRLM) is essentially unexplored. In addition, whether MAIT cell functions can be impacted by chemotherapy is unclear. These are important questions given MAIT cells' potent immunomodulatory and inflammatory properties. Herein, we examined the frequencies and functions of peripheral blood, healthy liver tissue, tumor-margin and tumor-infiltrating MAIT cells in 21 CRLM patients who received no chemotherapy, FOLFOX, or a combination of FOLFOX and Avastin before they underwent liver resection...
August 10, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28798777/mesenchymal-stem-cells-promote-metastasis-of-lung-cancer-cells-by-downregulating-systemic-antitumor-immune-response
#10
Marina Gazdic, Bojana Simovic Markovic, Nemanja Jovicic, Maja Misirkic-Marjanovic, Valentin Djonov, Vladimir Jakovljevic, Nebojsa Arsenijevic, Miodrag L Lukic, Vladislav Volarevic
Since majority of systemically administered mesenchymal stem cells (MSCs) become entrapped within the lungs, we used metastatic model of lung cancer, induced by intravenous injection of Lewis lung cancer 1 (LLC1) cells, to investigate the molecular mechanisms involved in MSC-mediated modulation of metastasis. MSCs significantly augmented lung cancer metastasis, attenuate concentrations of proinflammatory cytokines (TNF-α, IL-17), and increase levels of immunosuppressive IL-10, nitric oxide, and kynurenine in sera of LLC1-treated mice...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28796320/congenital-cutaneous-lymphadenoma
#11
Angel Fernandez-Flores, Ina Nicklaus-Wollenteit, Dharshini Sathishkumar, Vicky Diba, Bruce Richard, Richard Carr, Celia Moss, Anita Nagy, Malobi Ogboli, Isabel Colmenero
Cutaneous lymphadenoma is an uncommon benign neoplasm often considered to be an adamantinoid variant of trichoblastoma. Lesions present in both sexes, between 14 and 87 years of age, and are mainly located on the head and neck. Cases in children are rare and there is only one previous case of a congenital lymphadenoma. An 8-year-old Asian girl presented with a congenital lesion on her forehead comprising four pink papules, the largest 5 mm in diameter. Microscopy revealed a well circumscribed tumor within the dermis and subcutis comprising well demarcated epithelial lobules of basaloid and clear cells with subtle peripheral palisading, growing in a collagenous stroma but lacking retraction artefact...
August 10, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28794686/tumor-infiltrating-leukocyte-density-is-independent-of-tumor-grade-and-molecular-subtype-in-aggressive-breast-cancer-of-western-kenya
#12
Rispah T Sawe, Simeon K Mining, Ayub V Ofulla, Kirtika Patel, Bernard Guyah, David Chumba, Jenifer R Prosperi, Maggie Kerper, Zonggao Shi, Mayra Sandoval-Cooper, Katherine Taylor, Sunil Badve, M Sharon Stack, Laurie E Littlepage
BACKGROUND: Tumors commonly are infiltrated by leukocytes, or tumor infiltrating leukocytes (TILs). It remains unclear, however, if the density and type of individual TILs has a direct or simply correlative role in promoting poor prognosis in breast cancer patients. Breast cancer in Kenyan women is aggressive with presentation at a young age, with advanced grade (grade III), large tumor size (>2.0 cm), and poor prognosis. We previously observed that the tumors were predominantly estrogen receptor positive (ER+) but also included both a high percentage of triple negative tumors and also increased immune cell infiltration within the tumors...
2017: Tropical Medicine and Health
https://www.readbyqxmd.com/read/28794368/interstitial-lung-disease-induced-by-osimertinib-for-epidermal-growth-factor-receptor-egfr-t790m-positive-non-small-cell-lung-cancer
#13
Yoshiya Matsumoto, Tomoya Kawaguchi, Norio Yamamoto, Kenji Sawa, Naoki Yoshimoto, Tomohiro Suzumura, Tetsuya Watanabe, Shigeki Mitsuoka, Kazuhisa Asai, Tatsuo Kimura, Naruo Yoshimura, Yuko Kuwae, Kazuto Hirata
A 75-year-old man with stage IV lung adenocarcinoma was treated with osimertinib due to disease progression despite having been administered erlotinib. Both an epidermal growth factor receptor (EGFR) L858R mutation on exon 21 and a T790M mutation on exon 20 were detected in a specimen from a recurrent primary tumor. Five weeks after osimertinib initiation, he developed general fatigue and dyspnea. Chest computed tomography scan revealed diffuse ground glass opacities and consolidation on both lungs. An analysis of the bronchoalveolar lavage fluid revealed marked lymphocytosis, and a transbronchial lung biopsy specimen showed a thickened interstitium with fibrosis and prominent lymphocytic infiltration...
August 10, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28791392/the-mechanism-of-de-novo-expression-of-programmed-cell-death-ligand-1-in-squamous-cell-carcinoma-of-the-lung
#14
Tomoyuki Igarashi, Koji Teramoto, Mitsuaki Ishida, Jun Hanaoka, Yataro Daigo
Immune checkpoint mechanisms such as the programmed cell death-ligand 1-programmed cell death 1 (PD‑L1-PD‑1) axis are utilized by tumor cells to evade the cytotoxicity of effector immune cells. However, environmental factors responsible for the expression of PD‑L1 on tumor cells remain to be fully elucidated. We hypothesized that an immunological interaction with tumor-infiltrating CD8+ lymphocytes (CD8+ TILs) would contribute to PD‑L1 expression in tumor cells. To verify this hypothesis, we examined the effect of interferon-γ (IFN-γ), a cytokine secreted by CD8+ TILs, on PD‑L1 expression in pulmonary squamous cell carcinomas in vitro...
August 3, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28790445/the-prognostic-value-of-tumor-infiltrating-lymphocytes-in-hepatocellular-carcinoma-a-systematic-review-and-meta-analysis
#15
Wei Yao, Jun-Chuang He, Yan Yang, Jian-Ming Wang, Ya-Wei Qian, Tao Yang, Lei Ji
Previous clinical studies have found that the levels of tumor-infiltrating lymphocytes (TILs) significantly correlated with prognosis in hepatocellular carcinoma (HCC). However, these conclusions and data remain controversial. We performed a systematic review and meta-analysis to assess the prognostic value and clinical utilization of TILs in patients with HCC. A total of 23 relevant studies of 3173 patients were included into our meta-analysis. The results demonstrated that high levels of CD8 (+) and CD3 (+) TILs had a better prognostic value on overall survival (OS), with HRs of 0...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28790115/msh2-loss-in-primary-prostate-cancer
#16
Liana Guedes, Emmanuel S Antonarakis, Michael T Schweizer, Nooshin Mirkheshti, Fawaz Almutairi, Jong Chul Park, Stephanie A Glavaris, Jessica L Hicks, Mario A Eisenberger, Angelo M De Marzo, Jonathan I Epstein, William B Isaacs, James R Eshleman, Colin C Pritchard, Tamara L Lotan
PURPOSE: Inactivation of mismatch repair (MMR) genes may predict sensitivity to immunotherapy in metastatic prostate cancers. We studied primary prostate tumors with MMR defects. EXPERIMENTAL DESIGN: 1133 primary prostatic adenocarcinomas and 43 prostatic small cell carcinomas (NEPC) were screened by MSH2 immunohistochemistry with confirmation by next-generation sequencing (NGS). Microsatellite instability (MSI) was assessed by PCR and NGS (mSINGS). RESULTS: Of primary adenocarcinomas and NEPC, 1...
August 8, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28782555/nrf2-suppresses-the-function-of-dendritic-cells-to-facilitate-the-immune-escape-of-glioma-cells
#17
Jialiang Wang, Peng Liu, Shaoyan Xin, Zongbao Wang, Jun Li
Nrf2 is presented in dendritic cells (DCs) and contributes to the maintenance of redox homeostasis. However, the expression pattern and function of Nrf2 in the maturation of DCs in the glioma-infiltrated microenvironment remain unrevealed. Our study aims to investigate the roles of Nrf2 in glioma cell-tamed DCs and their impact on the downstream T cell proliferation and cytotoxicity to glioma cells. It was showed that the inducible maturation of DCs was significantly suppressed after stimulation with tumor-conditioned medium (TCM) prepared from glioma cells (LN-18 and U118MG), as suggested by the decreased CD80, CD86 and IL-12 p70 expression and higher levels of IL-10 than the normal astrocyte medium treated DCs...
August 4, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28777143/assessing-tumor-infiltrating-lymphocytes-in-solid-tumors-a-practical-review-for-pathologists-and-proposal-for-a-standardized-method-from-the-international-immuno-oncology-biomarkers-working-group-part-2-tils-in-melanoma-gastrointestinal-tract-carcinomas-non
#18
Shona Hendry, Roberto Salgado, Thomas Gevaert, Prudence A Russell, Tom John, Bibhusal Thapa, Michael Christie, Koen van de Vijver, M V Estrada, Paula I Gonzalez-Ericsson, Melinda Sanders, Benjamin Solomon, Cinzia Solinas, Gert G G M Van den Eynden, Yves Allory, Matthias Preusser, Johannes Hainfellner, Giancarlo Pruneri, Andrea Vingiani, Sandra Demaria, Fraser Symmans, Paolo Nuciforo, Laura Comerma, E A Thompson, Sunil Lakhani, Seong-Rim Kim, Stuart Schnitt, Cecile Colpaert, Christos Sotiriou, Stefan J Scherer, Michail Ignatiadis, Sunil Badve, Robert H Pierce, Giuseppe Viale, Nicolas Sirtaine, Frederique Penault-Llorca, Tomohagu Sugie, Susan Fineberg, Soonmyung Paik, Ashok Srinivasan, Andrea Richardson, Yihong Wang, Ewa Chmielik, Jane Brock, Douglas B Johnson, Justin Balko, Stephan Wienert, Veerle Bossuyt, Stefan Michiels, Nils Ternes, Nicole Burchardi, Stephen J Luen, Peter Savas, Frederick Klauschen, Peter H Watson, Brad H Nelson, Carmen Criscitiello, Sandra O'Toole, Denis Larsimont, Roland de Wind, Giuseppe Curigliano, Fabrice André, Magali Lacroix-Triki, Mark van de Vijver, Federico Rojo, Giuseppe Floris, Shahinaz Bedri, Joseph Sparano, David Rimm, Torsten Nielsen, Zuzana Kos, Stephen Hewitt, Baljit Singh, Gelareh Farshid, Sibylle Loibl, Kimberly H Allison, Nadine Tung, Sylvia Adams, Karen Willard-Gallo, Hugo M Horlings, Leena Gandhi, Andre Moreira, Fred Hirsch, Maria V Dieci, Maria Urbanowicz, Iva Brcic, Konstanty Korski, Fabien Gaire, Hartmut Koeppen, Amy Lo, Jennifer Giltnane, Marlon C Rebelatto, Keith E Steele, Jiping Zha, Kenneth Emancipator, Jonathan W Juco, Carsten Denkert, Jorge Reis-Filho, Sherene Loi, Stephen B Fox
Assessment of the immune response to tumors is growing in importance as the prognostic implications of this response are increasingly recognized, and as immunotherapies are evaluated and implemented in different tumor types. However, many different approaches can be used to assess and describe the immune response, which limits efforts at implementation as a routine clinical biomarker. In part 1 of this review, we have proposed a standardized methodology to assess tumor-infiltrating lymphocytes (TILs) in solid tumors, based on the International Immuno-Oncology Biomarkers Working Group guidelines for invasive breast carcinoma...
August 2, 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/28777142/assessing-tumor-infiltrating-lymphocytes-in-solid-tumors-a-practical-review-for-pathologists-and-proposal-for-a-standardized-method-from-the-international-immunooncology-biomarkers-working-group-part-1-assessing-the-host-immune-response-tils-in-invasive-breast
#19
Shona Hendry, Roberto Salgado, Thomas Gevaert, Prudence A Russell, Tom John, Bibhusal Thapa, Michael Christie, Koen van de Vijver, M V Estrada, Paula I Gonzalez-Ericsson, Melinda Sanders, Benjamin Solomon, Cinzia Solinas, Gert G G M Van den Eynden, Yves Allory, Matthias Preusser, Johannes Hainfellner, Giancarlo Pruneri, Andrea Vingiani, Sandra Demaria, Fraser Symmans, Paolo Nuciforo, Laura Comerma, E A Thompson, Sunil Lakhani, Seong-Rim Kim, Stuart Schnitt, Cecile Colpaert, Christos Sotiriou, Stefan J Scherer, Michail Ignatiadis, Sunil Badve, Robert H Pierce, Giuseppe Viale, Nicolas Sirtaine, Frederique Penault-Llorca, Tomohagu Sugie, Susan Fineberg, Soonmyung Paik, Ashok Srinivasan, Andrea Richardson, Yihong Wang, Ewa Chmielik, Jane Brock, Douglas B Johnson, Justin Balko, Stephan Wienert, Veerle Bossuyt, Stefan Michiels, Nils Ternes, Nicole Burchardi, Stephen J Luen, Peter Savas, Frederick Klauschen, Peter H Watson, Brad H Nelson, Carmen Criscitiello, Sandra O'Toole, Denis Larsimont, Roland de Wind, Giuseppe Curigliano, Fabrice André, Magali Lacroix-Triki, Mark van de Vijver, Federico Rojo, Giuseppe Floris, Shahinaz Bedri, Joseph Sparano, David Rimm, Torsten Nielsen, Zuzana Kos, Stephen Hewitt, Baljit Singh, Gelareh Farshid, Sibylle Loibl, Kimberly H Allison, Nadine Tung, Sylvia Adams, Karen Willard-Gallo, Hugo M Horlings, Leena Gandhi, Andre Moreira, Fred Hirsch, Maria V Dieci, Maria Urbanowicz, Iva Brcic, Konstanty Korski, Fabien Gaire, Hartmut Koeppen, Amy Lo, Jennifer Giltnane, Marlon C Rebelatto, Keith E Steele, Jiping Zha, Kenneth Emancipator, Jonathan W Juco, Carsten Denkert, Jorge Reis-Filho, Sherene Loi, Stephen B Fox
Assessment of tumor-infiltrating lymphocytes (TILs) in histopathologic specimens can provide important prognostic information in diverse solid tumor types, and may also be of value in predicting response to treatments. However, implementation as a routine clinical biomarker has not yet been achieved. As successful use of immune checkpoint inhibitors and other forms of immunotherapy become a clinical reality, the need for widely applicable, accessible, and reliable immunooncology biomarkers is clear. In part 1 of this review we briefly discuss the host immune response to tumors and different approaches to TIL assessment...
September 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/28774337/pd-1-pd-l-blockade-in-gastrointestinal-cancers-lessons-learned-and-the-road-toward-precision-immunotherapy
#20
REVIEW
Junyu Long, Jianzhen Lin, Anqiang Wang, Liangcai Wu, Yongchang Zheng, Xiaobo Yang, Xueshuai Wan, Haifeng Xu, Shuguang Chen, Haitao Zhao
Gastrointestinal (GI) malignancies are the most prevalent tumors worldwide, with increasing incidence and mortality. Although surgical resection, chemotherapy, radiotherapy, and molecular targeted therapy have led to significant advances in the treatment of GI cancer patients, overall survival is still low. Therefore, alternative strategies must be identified to improve patient outcomes. In the tumor microenvironment, tumor cells can escape the host immune response through the interaction of PD-1 and PD-L, which inhibits the function of T cells and tumor-infiltrating lymphocytes while increasing the function of immunosuppressive T regulatory cells...
August 3, 2017: Journal of Hematology & Oncology
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