#tumor — Public Fediverse posts

https://www.europesays.com/ie/667786/ Researchers identify a previously unknown mechanism that can drive cancer cachexia #cachexia #cancer #Colorectal #diabetes #Éire #Health #IE #Ireland #LungCancer #medicine #Muscle #Protein #Research #SignalingPathway #therapy #Tumor

Immunotherapy shows potential for treating rising gynecological tumors

Gynecological tumors, including cervical cancer (CC), endometrial cancer (EC), and ovarian cancer (OC), represent a significant global health…
#NewsBeep #News #Health #Angiogenesis #Antibodies #Antibody #AU #Australia #Cancer #Cell #cervicalcancer #Drugs #Efficacy #endometrialcancer #GlobalHealth #Immunotherapy #medicine #mortality #OvarianCancer #PD-L1 #research #therapy #Tumor
https://www.newsbeep.com/au/876510/

Immunotherapy shows potential for treating rising gynecological tumors

Gynecological tumors, including cervical cancer (CC), endometrial cancer (EC), and ovarian cancer (OC), represent a significant global health…
#NewsBeep #News #Health #Angiogenesis #Antibodies #Antibody #AU #Australia #Cancer #Cell #cervicalcancer #Drugs #Efficacy #endometrialcancer #GlobalHealth #Immunotherapy #medicine #mortality #OvarianCancer #PD-L1 #research #therapy #Tumor
https://www.newsbeep.com/au/876510/

https://www.europesays.com/ie/667418/ UNC researcher wins major grant to study the role of endoplasmic reticulum in T-cell metabolism #cancer #Cell #CellBiology #CellMetabolism #Éire #Health #IE #Immunology #Ireland #medicine #Metabolism #Physiology #Research #TCell #Tumor

Habe fertig. #SunriseRun 🌄👟🏃‍➡️ im Selztal 🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad #BeatYesterday

Guten Morgen vom #SunriseRun 🌄👟🏃‍➡️ im Selztal 🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

TUM Researchers Develop #AI #Method for #Tumor #Diagnostics

To find out how aggressive a tumor is today, there is usually only one way: to perform a #biopsy, surgical tissue sampling. For the patient, this is a real ordeal: unnecessary psychological trauma and an anxious wait for results that can stretch on for days or weeks.

#Read More👇👇👇

https://munchen.news/en/munich/tum-researchers-develop-ai-method-for-tumor-diagnostics/

© Photo: ChatGPT

Habe fertig.

#SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

Einfach nur hier sitzen. An der Selz. In Selzen. Im Selztal.

#SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

Sonne ☀️ am Morgen
vertreibt Kummer und Sorgen.

#SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

Einfach nur hier sitzen.

#SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

Tarnlaufklamotten. So wichtig in diesen Sommern.

#SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

Immer noch oben.

#SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

Oben.

#SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

Kapelle in den Zornheimer Weinbergen 🍇

#SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

Guten Morgen vom #SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

Guten Morgen vom #SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

Tumorkontrolle nach meinem Gallengangskrebs - Im November 2024 wurde mir in einer mehrstündigen Operation ein Gallengangskarzinom entfernt. Seitdem bin ich in der onkologischen Nachsorge. Wie verläuft die Tumorkontrolle bei mir, wie oft muss ich zur Tumorkontrolle, und wie gehe ich mit der Krebserkrankung und den Kontrollen um?

https://derschreiben.de/onkologische-nachsorge-tumorkontrolle-nach-meinem-gallengangskrebs/

#Tumor #Krebs #Survivor #Onkologie #Mainz #Ambulanz #gumainz

In wenigen Tagen beginnt die jährliche Schlacht in den Weinbergen von Rheinhessen. Doch die Winzer haben ihre Truppen gegen die Vogelschwärme schon in Stellung gebracht: Schussapparate sollen mit lauten Böllern die Vögel daran hindern, die süßen Trauben zu fressen.

Wenn ich aus dem Urlaub zurück bin, werde ich erst einmal nur im Tal entlang der Selz laufen.

#TumorRunner #Rheinhessen #Laufen #Krebs #Running #Sportkamerad #RheinSelz #RunnersOfMastodon #Sportkamerad #Tumor

Habe fertig. Morgenlauf in den Weinbergen über Selzen in Rheinhessen.

#TumorRunner #Rheinhessen #Laufen #Krebs #Running #Sportkamerad #RheinSelz #RunnersOfMastodon #Sportkamerad #Tumor

Einfach nur hier sitzen.

Morgenlauf 🌄🏃‍➡️👟 in den Weinbergen🍇 über Selzen in Rheinhessen.

#TumorRunner #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sportkamerad #Tumor #Krebs

Erweiterungsspeicher für AfDler

Guten Morgen vom Morgenlauf 🌄🏃‍➡️👟 in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sportkamerad #Tumor #Krebs

Onkologische Nachsorge – Tumorkontrolle nach meinem Gallengangskrebs
Im November 2024 wurde mir in einer mehrstündigen Operation ein Gallengangskarzinom entfernt. Seitdem bin ich in der onkologischen Nachsorge. Wie verläuft die Tumorkontrolle bei mir, wie oft muss ich zur Tumorkontrolle, und wie gehe ich mit der Krebserkrankung und den Kontrollen um?

https://derschreiben.de/onkologische-nachsorge-tumorkontrolle-nach-meinem-gallengangskrebs/

#Tumor #Krebs #Survivor #Onkologie

Onkologische Nachsorge – Tumorkontrolle nach meinem Gallengangskrebs

https://derschreiben.de/onkologische-nachsorge-tumorkontrolle-nach-meinem-gallengangskrebs/

Notable study.

Safety profiling of CAR-T cells using an organotypic human tissue platform

#science
#immunology
#tumor
#immunotherapy

https://www.biorxiv.org/content/10.64898/2026.07.25.740527v1

Einfach nur hier sitzen. In der UniMedizin Mainz.

Tumor-Kontrolle erfolgreich "bestanden". Nächste Kontrolle im Dezember.

#Tumor #Survivor #Krebs #Mainz

Sodele. Coffee first, Tumorkontrolle second?

Als Koffeinista trinke ich noch einen Kaffee. Doch wichtiger ist mir heute meine Tumorkontrolle in der Unimedizin Mainz. Am Nachmittag schreibe ich dann einen kleinen Artikel, wie so eine Tumorkontrolle bei mir nach einen Gallengangskarzinom abläuft und wie ich mich davor und dabei fühle. Und wie heute das Ergebnis der Kontrolle ausfiel. Drückt mir die Daumen.

https://derschreiben.de/tumor

#Mainz #Tumor #Survivor #Krebs

Inside the Tumor, an Ancient Complement Protein Flips the Switch on Immunotherapy

Our best stories, delivered daily. Follow us.

https://1ban.news/tumor-local-complement-c3-immunotherapy/

#1ban #tumor #local #complement #immunotherapy #science

Habe fertig. #SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

Echt jetzt? Dafür bin ich jetzt wirklich zu alt.

#SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

Einfach nur hier sitzen am Weinpavillon 🍷 Zornheim.

#SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

Guten Morgen aus der Kapelle in den Zornheimer Weinbergen 🍇

#SunriseRun 🌄👟🏃‍➡️ in den Weinbergen🍇 von Rheinhessen.

#TumorRunner #Tumor #Survivor #Rheinhessen #RheinSelz #Krebs #Laufen #Running #RunnersOfMastodon #Sonnenaufgang #Sunrise #Sportkamerad

A surprising and counterintuitive observation: a diet that promotes obesity enhances tumor control during immune checkpoint inhibitor therapy.

#science
#immunology
#tumor
#immunotherapy
#gut
#microbiota

https://www.nature.com/articles/s41586-026-10750-x

⚕️ Künstliche Intelligenz in der Pathologie ermöglicht ein tieferes Verständnis von Tumorerkrankungen

🏥 Ein Team der Pathologie der Uniklinik Köln hat dafür das agentenbasierte KI-System SPARK entwickelt. Es verknüpft mehrere spezialisierte Algorithmen zu einem koordinierten System, das eigenständig biologische Hypothesen generieren, verfeinern und in analytische Werkzeuge umsetzen kann.

Mehr dazu: ➡️ https://uni.koeln/BSZ8B
#Uniköln #KI #Pathologie #Medizin #Tumor #Krebs #uniklinik #köln

https://www.europesays.com/es/515351/ Un fármaco antiparasitario promueve la quimiosensibilidad en el cáncer de esófago #accion #antihelmíntico #antiparasitario #autoridades #autorizado #cáncer #deja #descubierto #diana #ES #esófago #España #este #fármaco #Health #mebendazol #mecanismo #potencial #promueve #quimiosensibilidad #Salud #sanitarias #Spain #terapéutica #tipo #Tumor #ya

Die #Pathologie ist diverser als ein Gerichtsmediziner, der im Keller eine Obduktion vornimmt...

Albrecht Stenzinger von der @uniheidelberg
eläutert im Gespräch mit Mario Rembold, was alles in die Werkzeugbox seines Fachbereichs gehört. Etwa #Morphologie, #Genomik, #Transkriptomik, #Proteomik. Denn die Grenzen des Faches sind nicht mehr klar abgrenzbar…

Das ganze Interview hier: https://www.laborjournal.de/editorials/3464.php

#Laborjournal #LifeSci #Pathologie #Tumor #SciComm

#Tumor #cells won’t show their true selves in a #petri dish, isolated from other cells. Rice University researchers developed an upgraded tumor model that houses #osteosarcoma cells beside #immune cells known as #macrophages inside a three-dimensional structure #engineered to mimic #bone.
#Cancer #Engineering #Biology #sflorg
https://www.sflorg.com/2023/03/eng03202301.html

@explainpaper

Tumoral Immune Cell Exploitation in Colorectal Cancer Metastases Can Be Targeted Effectively by Anti-CCR5 Therapy in Cancer Patients

Niels Halama, Inka Zoernig, Anna Berthel, Christoph Kahlert, Fee Klupp, Meggy Suarez-Carmona,Thomas Suetterlin, Karsten Brand, Juergen Krauss, Felix Lasitschka, Tina Lerchl, Claudia Luckner-Minden, Alexis Ulrich, Moritz Koch, Juergen Weitz, Martin Schneider, Markus W. Buechler, Laurence Zitvogel,
Thomas Herrmann, Axel Benner, Christina Kunz, Stephan Luecke, Christoph Springfeld, Niels Grabe, Christine S. Falk, and Dirk Jaeger

Targeting Tumor-Promoting Microenvironment Through CCR5 Blockade in #Colorectal #Cancer #Liver Metastases

#Cancer progression is a process in which cancer cells and #immune cells interact with each other in a way that can lead to the growth and spread of cancer. In #colorectal cancer, when the cancer has spread to other parts of the body, it is called #metastasis and it is very difficult to treat. Treatments such as PD-1/PD-L1 blockade and #chemokine modulation have been successful in modifying the interactions between the immune system and cancer, leading to the rejection or suppression of progression. Cancer cells can also alter the immune microenvironment, leading to #immunosuppression and #immune evasion. In this research paper, the authors studied the microenvironment in #CRC #liver metastases and identified a network of #tumor cells and immune cells that exploit the CCL5-CCR5 axis. They then investigated and characterized the effects of blocking the CCL5-CCR5 axis.

the microenvironment of #liver metastases of #colorectal cancer (#CRC).

the environment induces migration of T lymphocytes, which produce a #cytokine called CCL5. This CCL5 then supports tumor growth and spread by influencing macrophages and #tumor cells. The environment is immunosuppressive and the tumor cells are exploiting the host's #immune cells to their advantage. In other words, the tumor cells are using the host's immune cells to help them grow and spread.

the effects of CCR5 blockade on the #tissue level.

Tumor #cell death and a specific pattern of #cytokine and #chemokine modulation are observed in the #ExplantModel and in #tumor biopsies from a #ClinicalTrial. Macrophages are the key for these anti-tumoral effects, as they produce IFNs and reactive oxygen species which cause tumor cell death. #CCR5 blockade induces a phenotypic shift in the macrophages, which is referred to as a switch from an M2 to an M1 phenotype. This repolarization also reduces levels of CD163+ cells, reshaping the #myeloid cell composition in the microenvironment. The influx of new effector cells due to CCR5 inhibition can shift the effects of CCL5 towards beneficial effects, such as reduction of #immunosuppression , #angiogenesis, and #chemotherapy resistance.

The microenvironment of the invasive margin of #liver metastases.

There was no relevant Th1, Th2, or Th17 #cytokine signature present in any of the samples. However, the authors did find that #chemokines and #macrophage-related cytokines were significantly increased at the invasive margin. Chemokines are molecules that help to attract #immune cells to the area, and macrophage-related cytokines are molecules that help to regulate the activity of #macrophages, which are a type of immune cell. 98% of the CD3+ #lymphocyte s in the resection specimens were positive for PD-1, which is a molecule that helps to regulate the activity of the immune system.

#CCL5 is a protein produced by T cells, which are a type of white blood cell. #CCR5 is a receptor found on metastatic tumor cells, which are cancer cells that have spread from the primary #tumor to other parts of the body. In this research paper, it was found that CCL5 has #pleiotropic tumor-promoting effects on #tumor cells and tumor-associated #macrophage s. This means that CCL5 has multiple effects on both the cancer cells and the macrophages, which are a type of white #blood #cell, that are associated with the #tumor. CCL5 was produced mainly by T cells located at the invasive margin and #peritumoral stroma of metastases, and that CCR5 was dominantly expressed by metastatic tumor cells. CCL5 also had effects on tumor #CellProliferation, invasive tumor #CellBehavior, and increased production of matrix #metalloproteinas es by tumor-associated macrophages. Finally, they found that CCR5 inhibition had an effect on key molecules of #epithelial to #mesenchymal transition ( #EMT ).

The researchers wanted to test the effects of #CCR5 blockade, which is a way of blocking the CCR5 receptor on cells, using a drug called maraviroc. They used human #tumor #explantmodel s, which are samples of #tissue from advanced #CRC patients with #liver metastases. Maraviroc led to morphologically overt tumor #CellDeath in the #explants, which means that the tumor cells died and changed in appearance. The researchers then tested the hypothesis that #macrophage s, (type of white blood cell), were required for the tumor cell death-inducing effects of CCR5 blockade. They used clodronate #liposome s to deplete CD163+ TAMs, ( #macrophage s associated with tumors) and found that combining clodronate with CCR5 inhibition abrogated the immediate tumor cell death-inducing effects of #CCR5 inhibition. This confirmed the role of macrophages in this process. IFN-g induced stromal CD163+ #macrophage #cell death and led to a reconfiguration of the #myeloid cell compartment. Inhibition of macrophage-derived reactive oxygen species could partially block the anti-tumoral effects of CCR5 inhibition. Finally, they tested the effects of CCL5/CCR5 inhibition and found that both a CCL5 neutralizing antibody and a CCR5 blocking #antibody had similar functional effects to maraviroc.

A #ClinicalTrial (MARACON) was conducted to test the effects of a drug called maraviroc on patients with advanced-stage #metastatic colorectal #cancer. The #trial involved taking biopsies of the patients before and after treatment with maraviroc, and the results showed that the drug had beneficial effects on the tumor-promoting #microenvironment and led to objective clinical responses. These responses included induction of central #TumorNecrosis, reduction of tumor cell death, and reduction of key #cytokine s and growth factors that promote tumor growth. The drug was also found to be very well tolerated, with mild elevation of #liver enzymes being the most common side effect. Finally, the trial showed that partial responses were achieved in patients with previously refractory disease.

CCR5 blockade, is a type of #therapy used to treat #cancer.

The MARACON clinical trial, showed that CCR5 blockade had a positive effect on the tumor microenvironment and led to a higher response rate in subsequent chemotherapies. The authors suggest that this effect is not limited to the #liver metastases, but is a systemic feature. They also suggest that the local presence of multiple layers of #immune subversion in cancers depends on the individual tissue, #treatment, tumor type, and the difference between primary #tumor and metastatic lesion. The authors also found that the results of the #ClinicalTrial were in line with the results of a fully human organotypic tumor #ExplantModel, which is a simple model with a straightforward approach. The authors also note that the survival data from the trial is not conclusive due to the limited number of patients, but that the objective treatment responses are very encouraging. They suggest that CCR5 blockade may be a promising approach and needs to be evaluated further scientifically and clinically.

@explainpaper

Tumoral Immune Cell Exploitation in Colorectal Cancer Metastases Can Be Targeted Effectively by Anti-CCR5 Therapy in Cancer Patients

Niels Halama, Inka Zoernig, Anna Berthel, Christoph Kahlert, Fee Klupp, Meggy Suarez-Carmona,Thomas Suetterlin, Karsten Brand, Juergen Krauss, Felix Lasitschka, Tina Lerchl, Claudia Luckner-Minden, Alexis Ulrich, Moritz Koch, Juergen Weitz, Martin Schneider, Markus W. Buechler, Laurence Zitvogel,
Thomas Herrmann, Axel Benner, Christina Kunz, Stephan Luecke, Christoph Springfeld, Niels Grabe, Christine S. Falk, and Dirk Jaeger

Targeting Tumor-Promoting Microenvironment Through CCR5 Blockade in #Colorectal #Cancer #Liver Metastases

#Cancer progression is a process in which cancer cells and #immune cells interact with each other in a way that can lead to the growth and spread of cancer. In #colorectal cancer, when the cancer has spread to other parts of the body, it is called #metastasis and it is very difficult to treat. Treatments such as PD-1/PD-L1 blockade and #chemokine modulation have been successful in modifying the interactions between the immune system and cancer, leading to the rejection or suppression of progression. Cancer cells can also alter the immune microenvironment, leading to #immunosuppression and #immune evasion. In this research paper, the authors studied the microenvironment in #CRC #liver metastases and identified a network of #tumor cells and immune cells that exploit the CCL5-CCR5 axis. They then investigated and characterized the effects of blocking the CCL5-CCR5 axis.

the microenvironment of #liver metastases of #colorectal cancer (#CRC).

the environment induces migration of T lymphocytes, which produce a #cytokine called CCL5. This CCL5 then supports tumor growth and spread by influencing macrophages and #tumor cells. The environment is immunosuppressive and the tumor cells are exploiting the host's #immune cells to their advantage. In other words, the tumor cells are using the host's immune cells to help them grow and spread.

the effects of CCR5 blockade on the #tissue level.

Tumor #cell death and a specific pattern of #cytokine and #chemokine modulation are observed in the #ExplantModel and in #tumor biopsies from a #ClinicalTrial. Macrophages are the key for these anti-tumoral effects, as they produce IFNs and reactive oxygen species which cause tumor cell death. #CCR5 blockade induces a phenotypic shift in the macrophages, which is referred to as a switch from an M2 to an M1 phenotype. This repolarization also reduces levels of CD163+ cells, reshaping the #myeloid cell composition in the microenvironment. The influx of new effector cells due to CCR5 inhibition can shift the effects of CCL5 towards beneficial effects, such as reduction of #immunosuppression , #angiogenesis, and #chemotherapy resistance.

The microenvironment of the invasive margin of #liver metastases.

There was no relevant Th1, Th2, or Th17 #cytokine signature present in any of the samples. However, the authors did find that #chemokines and #macrophage-related cytokines were significantly increased at the invasive margin. Chemokines are molecules that help to attract #immune cells to the area, and macrophage-related cytokines are molecules that help to regulate the activity of #macrophages, which are a type of immune cell. 98% of the CD3+ #lymphocyte s in the resection specimens were positive for PD-1, which is a molecule that helps to regulate the activity of the immune system.

#CCL5 is a protein produced by T cells, which are a type of white blood cell. #CCR5 is a receptor found on metastatic tumor cells, which are cancer cells that have spread from the primary #tumor to other parts of the body. In this research paper, it was found that CCL5 has #pleiotropic tumor-promoting effects on #tumor cells and tumor-associated #macrophage s. This means that CCL5 has multiple effects on both the cancer cells and the macrophages, which are a type of white #blood #cell, that are associated with the #tumor. CCL5 was produced mainly by T cells located at the invasive margin and #peritumoral stroma of metastases, and that CCR5 was dominantly expressed by metastatic tumor cells. CCL5 also had effects on tumor #CellProliferation, invasive tumor #CellBehavior, and increased production of matrix #metalloproteinas es by tumor-associated macrophages. Finally, they found that CCR5 inhibition had an effect on key molecules of #epithelial to #mesenchymal transition ( #EMT ).

The researchers wanted to test the effects of #CCR5 blockade, which is a way of blocking the CCR5 receptor on cells, using a drug called maraviroc. They used human #tumor #explantmodel s, which are samples of #tissue from advanced #CRC patients with #liver metastases. Maraviroc led to morphologically overt tumor #CellDeath in the #explants, which means that the tumor cells died and changed in appearance. The researchers then tested the hypothesis that #macrophage s, (type of white blood cell), were required for the tumor cell death-inducing effects of CCR5 blockade. They used clodronate #liposome s to deplete CD163+ TAMs, ( #macrophage s associated with tumors) and found that combining clodronate with CCR5 inhibition abrogated the immediate tumor cell death-inducing effects of #CCR5 inhibition. This confirmed the role of macrophages in this process. IFN-g induced stromal CD163+ #macrophage #cell death and led to a reconfiguration of the #myeloid cell compartment. Inhibition of macrophage-derived reactive oxygen species could partially block the anti-tumoral effects of CCR5 inhibition. Finally, they tested the effects of CCL5/CCR5 inhibition and found that both a CCL5 neutralizing antibody and a CCR5 blocking #antibody had similar functional effects to maraviroc.

A #ClinicalTrial (MARACON) was conducted to test the effects of a drug called maraviroc on patients with advanced-stage #metastatic colorectal #cancer. The #trial involved taking biopsies of the patients before and after treatment with maraviroc, and the results showed that the drug had beneficial effects on the tumor-promoting #microenvironment and led to objective clinical responses. These responses included induction of central #TumorNecrosis, reduction of tumor cell death, and reduction of key #cytokine s and growth factors that promote tumor growth. The drug was also found to be very well tolerated, with mild elevation of #liver enzymes being the most common side effect. Finally, the trial showed that partial responses were achieved in patients with previously refractory disease.

CCR5 blockade, is a type of #therapy used to treat #cancer.

The MARACON clinical trial, showed that CCR5 blockade had a positive effect on the tumor microenvironment and led to a higher response rate in subsequent chemotherapies. The authors suggest that this effect is not limited to the #liver metastases, but is a systemic feature. They also suggest that the local presence of multiple layers of #immune subversion in cancers depends on the individual tissue, #treatment, tumor type, and the difference between primary #tumor and metastatic lesion. The authors also found that the results of the #ClinicalTrial were in line with the results of a fully human organotypic tumor #ExplantModel, which is a simple model with a straightforward approach. The authors also note that the survival data from the trial is not conclusive due to the limited number of patients, but that the objective treatment responses are very encouraging. They suggest that CCR5 blockade may be a promising approach and needs to be evaluated further scientifically and clinically.

@explainpaper

Tumoral Immune Cell Exploitation in Colorectal Cancer Metastases Can Be Targeted Effectively by Anti-CCR5 Therapy in Cancer Patients

Niels Halama, Inka Zoernig, Anna Berthel, Christoph Kahlert, Fee Klupp, Meggy Suarez-Carmona,Thomas Suetterlin, Karsten Brand, Juergen Krauss, Felix Lasitschka, Tina Lerchl, Claudia Luckner-Minden, Alexis Ulrich, Moritz Koch, Juergen Weitz, Martin Schneider, Markus W. Buechler, Laurence Zitvogel,
Thomas Herrmann, Axel Benner, Christina Kunz, Stephan Luecke, Christoph Springfeld, Niels Grabe, Christine S. Falk, and Dirk Jaeger

Targeting Tumor-Promoting Microenvironment Through CCR5 Blockade in #Colorectal #Cancer #Liver Metastases

#Cancer progression is a process in which cancer cells and #immune cells interact with each other in a way that can lead to the growth and spread of cancer. In #colorectal cancer, when the cancer has spread to other parts of the body, it is called #metastasis and it is very difficult to treat. Treatments such as PD-1/PD-L1 blockade and #chemokine modulation have been successful in modifying the interactions between the immune system and cancer, leading to the rejection or suppression of progression. Cancer cells can also alter the immune microenvironment, leading to #immunosuppression and #immune evasion. In this research paper, the authors studied the microenvironment in #CRC #liver metastases and identified a network of #tumor cells and immune cells that exploit the CCL5-CCR5 axis. They then investigated and characterized the effects of blocking the CCL5-CCR5 axis.

the microenvironment of #liver metastases of #colorectal cancer (#CRC).

the environment induces migration of T lymphocytes, which produce a #cytokine called CCL5. This CCL5 then supports tumor growth and spread by influencing macrophages and #tumor cells. The environment is immunosuppressive and the tumor cells are exploiting the host's #immune cells to their advantage. In other words, the tumor cells are using the host's immune cells to help them grow and spread.

the effects of CCR5 blockade on the #tissue level.

Tumor #cell death and a specific pattern of #cytokine and #chemokine modulation are observed in the #ExplantModel and in #tumor biopsies from a #ClinicalTrial. Macrophages are the key for these anti-tumoral effects, as they produce IFNs and reactive oxygen species which cause tumor cell death. #CCR5 blockade induces a phenotypic shift in the macrophages, which is referred to as a switch from an M2 to an M1 phenotype. This repolarization also reduces levels of CD163+ cells, reshaping the #myeloid cell composition in the microenvironment. The influx of new effector cells due to CCR5 inhibition can shift the effects of CCL5 towards beneficial effects, such as reduction of #immunosuppression , #angiogenesis, and #chemotherapy resistance.

The microenvironment of the invasive margin of #liver metastases.

There was no relevant Th1, Th2, or Th17 #cytokine signature present in any of the samples. However, the authors did find that #chemokines and #macrophage-related cytokines were significantly increased at the invasive margin. Chemokines are molecules that help to attract #immune cells to the area, and macrophage-related cytokines are molecules that help to regulate the activity of #macrophages, which are a type of immune cell. 98% of the CD3+ #lymphocyte s in the resection specimens were positive for PD-1, which is a molecule that helps to regulate the activity of the immune system.

#CCL5 is a protein produced by T cells, which are a type of white blood cell. #CCR5 is a receptor found on metastatic tumor cells, which are cancer cells that have spread from the primary #tumor to other parts of the body. In this research paper, it was found that CCL5 has #pleiotropic tumor-promoting effects on #tumor cells and tumor-associated #macrophage s. This means that CCL5 has multiple effects on both the cancer cells and the macrophages, which are a type of white #blood #cell, that are associated with the #tumor. CCL5 was produced mainly by T cells located at the invasive margin and #peritumoral stroma of metastases, and that CCR5 was dominantly expressed by metastatic tumor cells. CCL5 also had effects on tumor #CellProliferation, invasive tumor #CellBehavior, and increased production of matrix #metalloproteinas es by tumor-associated macrophages. Finally, they found that CCR5 inhibition had an effect on key molecules of #epithelial to #mesenchymal transition ( #EMT ).

The researchers wanted to test the effects of #CCR5 blockade, which is a way of blocking the CCR5 receptor on cells, using a drug called maraviroc. They used human #tumor #explantmodel s, which are samples of #tissue from advanced #CRC patients with #liver metastases. Maraviroc led to morphologically overt tumor #CellDeath in the #explants, which means that the tumor cells died and changed in appearance. The researchers then tested the hypothesis that #macrophage s, (type of white blood cell), were required for the tumor cell death-inducing effects of CCR5 blockade. They used clodronate #liposome s to deplete CD163+ TAMs, ( #macrophage s associated with tumors) and found that combining clodronate with CCR5 inhibition abrogated the immediate tumor cell death-inducing effects of #CCR5 inhibition. This confirmed the role of macrophages in this process. IFN-g induced stromal CD163+ #macrophage #cell death and led to a reconfiguration of the #myeloid cell compartment. Inhibition of macrophage-derived reactive oxygen species could partially block the anti-tumoral effects of CCR5 inhibition. Finally, they tested the effects of CCL5/CCR5 inhibition and found that both a CCL5 neutralizing antibody and a CCR5 blocking #antibody had similar functional effects to maraviroc.

A #ClinicalTrial (MARACON) was conducted to test the effects of a drug called maraviroc on patients with advanced-stage #metastatic colorectal #cancer. The #trial involved taking biopsies of the patients before and after treatment with maraviroc, and the results showed that the drug had beneficial effects on the tumor-promoting #microenvironment and led to objective clinical responses. These responses included induction of central #TumorNecrosis, reduction of tumor cell death, and reduction of key #cytokine s and growth factors that promote tumor growth. The drug was also found to be very well tolerated, with mild elevation of #liver enzymes being the most common side effect. Finally, the trial showed that partial responses were achieved in patients with previously refractory disease.

CCR5 blockade, is a type of #therapy used to treat #cancer.

The MARACON clinical trial, showed that CCR5 blockade had a positive effect on the tumor microenvironment and led to a higher response rate in subsequent chemotherapies. The authors suggest that this effect is not limited to the #liver metastases, but is a systemic feature. They also suggest that the local presence of multiple layers of #immune subversion in cancers depends on the individual tissue, #treatment, tumor type, and the difference between primary #tumor and metastatic lesion. The authors also found that the results of the #ClinicalTrial were in line with the results of a fully human organotypic tumor #ExplantModel, which is a simple model with a straightforward approach. The authors also note that the survival data from the trial is not conclusive due to the limited number of patients, but that the objective treatment responses are very encouraging. They suggest that CCR5 blockade may be a promising approach and needs to be evaluated further scientifically and clinically.