Tumor Cell and CAF Metabolic Interplay in Hypoxia vs. Normoxia
Journal name: The Malaysian Journal of Medical Sciences
Original article title: Metabolic Interplay between Tumour Cells and Cancer-Associated Fibroblasts (CAFs) under Hypoxia versus Normoxia
The Malaysian Journal of Medical Sciences (MJMS) is a peer-reviewed, open-access journal published online at least six times a year. It covers all aspects of medical sciences and prioritizes high-quality research.
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Original source:
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Septelia Inawati Wanandi, Sri Suciati Ningsih, Hijrah Asikin, Rendy Hosea, Gladies Mercya Grameinie Neolaka
The Malaysian Journal of Medical Sciences:
(A peer-reviewed, open-access journal)
Full text available for: Metabolic Interplay between Tumour Cells and Cancer-Associated Fibroblasts (CAFs) under Hypoxia versus Normoxia
Year: 2018 | Doi: 10.21315/mjms2018.25.3.2
Copyright (license): CC BY 4.0
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Summary of article contents:
Introduction
Cancer is characterized by the uncontrolled growth of cells that can invade surrounding tissues and metastasize to distant sites. The communication between cancer cells and their microenvironment, specifically the tumor stroma, plays a significant role in tumor development and progression. Cancer-associated fibroblasts (CAFs), the predominant cells in the tumor stroma, interact with tumor cells through various mechanisms. These interactions, particularly under varying oxygen conditions, enable tumor cells to adapt metabolically to their environment. The shift in metabolic pathways, notably the Warburg effect and the reverse Warburg effect, highlights the complex relationship between tumor cells and CAFs under differing oxygen levels.
The Warburg Effect and Reverse Warburg Effect
One of the critical metabolic concepts in cancer biology is the Warburg effect, which refers to the preference of cancer cells to convert glucose to lactate even in the presence of oxygen. This adaptation occurs primarily in rapidly proliferating tumor cells as they outgrow their blood supply, leading to hypoxic conditions in some tumor areas. Conversely, under normoxic conditions, CAFs can exhibit a shift towards aerobic glycolysis, known as the reverse Warburg effect, where they produce lactate that can be utilized by tumor cells for energy through oxidative phosphorylation. This mutual metabolic cooperation allows both cell types to sustain energy production despite the challenging conditions in the tumor microenvironment.
Conclusion
Understanding the metabolic interplay between tumor cells and CAFs is critical for developing potential therapeutic strategies for cancer treatment. The dynamic interactions driven by lactic acid metabolism and transporter proteins like monocarboxylate transporters (MCTs) underscore howCAF activity influences tumor metabolism and growth. Disruptions in this metabolic cooperation may offer promising avenues for targeting the tumor microenvironment and its supportive role in cancer progression, highlighting the importance of continuing research in this field for innovative cancer therapies.
FAQ section (important questions/answers):
What are cancer-associated fibroblasts (CAFs) and their role in tumors?
CAFs are the most abundant cells in tumor stroma, aiding cancer growth. They secrete growth factors that influence tumor cell proliferation, metabolism, angiogenesis, and metastasis, interacting closely with cancer cells within the tumor microenvironment.
How do tumor cells adapt to hypoxic conditions?
Under hypoxic conditions, tumor cells switch metabolic pathways from oxidative phosphorylation to glycolysis. This metabolic change is primarily expressed as the Warburg effect, where glucose is converted into lactate to sustain energy production even in low oxygen environments.
What is the significance of lactate and lactate dehydrogenases (LDHs)?
Lactate is a byproduct of glycolysis, and LDHs facilitate its conversion to pyruvate. This interconversion is vital for maintaining energy levels in both tumor and CAFs, playing a critical role in the metabolic interplay and adaptation of cancer cells.
What role do monocarboxylate transporters (MCTs) play in cancer?
MCTs mediate the transport of lactate and pyruvate across cell membranes, facilitating the exchange between cancer and CAFs. Their regulation impacts the metabolic cooperation essential for tumor survival in varied oxygen conditions, advancing cancer growth and metastasis.
Glossary definitions and references:
Scientific and Ayurvedic Glossary list for “Tumor Cell and CAF Metabolic Interplay in Hypoxia vs. Normoxia”. This list explains important keywords that occur in this article and links it to the glossary for a better understanding of that concept in the context of Ayurveda and other topics.
1) Cancer:
Cancer refers to the uncontrolled growth of abnormal cells in the body, which can invade and damage surrounding tissues. This growth is often related to the tumor microenvironment, particularly the role of stromal cells, such as cancer-associated fibroblasts (CAFs), in providing support and signaling to tumor cells, facilitating their proliferation and metastasis.
2) Activity:
Activity in a cellular context often refers to the metabolic processes that occur within tumor cells and surrounding fibroblasts. In cancer, metabolic activity can shift based on the oxygen availability and influence the dynamics of lactate production, showcasing the interplay between different cell types in the tumor microenvironment.
3) Table:
In scientific studies, tables are crucial for organizing and summarizing data, making it easier for researchers to present results and for readers to grasp key findings at a glance. In the context of cancer research, tables could summarize data on metabolic pathways involved in tumorigenesis and cellular interactions within the tumor stroma.
4) Blood:
Blood plays a vital role in cancer, as it provides nutrients and oxygen to tumors while also facilitating the transport of cancer cells to distant sites in the body through metastasis. The tumor microenvironment relies heavily on blood supply, influencing the growth and behavior of both tumor cells and CAFs.
5) Study (Studying):
The study of cancer, particularly metabolic interactions and the tumor microenvironment, is essential for uncovering mechanisms of tumor progression and identifying potential therapeutic targets. Research often involves exploring how tumor cells and CAFs communicate and how their metabolic pathways can influence cancer outcomes.
6) Hara:
This term could reference a contributing author or researcher whose work focuses on cancer biology, metabolic reprogramming, or the interactions between tumor cells and their microenvironment. Such contributions are pivotal in advancing the understanding of cancer mechanisms and therapeutic strategies.
7) Life:
In the context of cancer research, 'life' reflects the biological processes vital for sustaining cells and organisms, including how tumor cells alter their metabolic pathways for survival under various conditions such as hypoxia. This concept highlights the significance of metabolism in cancer progression and treatment responses.
8) Family:
In biology, 'family' refers to a group of related organisms or genes. In cancer research, this might pertain to families of enzymes like lactate dehydrogenases (LDHs) that play critical roles in cellular metabolism, affecting how cancer cells and CAFs interact and adapt to their environment.
9) Pur:
Poor refers to deficiencies or unfavorable conditions, such as poor prognosis in cancer patients due to the aggressive nature of their tumors or the compromised efficacy of treatment. Understanding factors that lead to poor outcomes is critical for developing better therapeutic interventions.
10) Accumulation (Accumulating, Accumulate):
Accumulate refers to the gathering of metabolites or signaling molecules within cells or extracellular space. In cancer, accumulation can affect metabolic states and influence communication between tumor cells and stromal components, ultimately impacting tumor dynamics.
11) Measurement:
Measurement in the context of cancer research can involve various biochemical assays and metrics used to determine the levels of specific enzymes or metabolites involved in tumor metabolism, aiding in the assessment of metabolic states and the efficacy of potential therapeutic strategies.
12) Transformation (Transform, Transforming):
Transforming refers to significant changes within cells, particularly the process by which normal cells acquire cancerous properties. This transformation informs on the pathway by which tumor cells adapt to their microenvironment and influence cancer progression.
13) Cross road (Crossroad):
In cancer biology, a 'crossroad' might signify a critical intersection of metabolic pathways where different cellular processes converge. Understanding these crossroad interactions is vital for deciphering the metabolic flexibility of tumor cells and their interactions with CAFs in the tumor microenvironment.
14) Kalluri:
Kalluri is likely a reference to a prominent researcher in the field of cancer biology. Research contributions from authors like Kalluri are vital for elucidating the roles of fibroblasts and other stromal components in cancer development, leading to potential therapeutic strategies.
15) Killing (Killed):
Killing in cancer research often refers to the targeting of cancer cells for destruction by therapies, such as chemotherapy or immunotherapy. Understanding the mechanisms of cell death in tumors is essential for developing effective treatment modalities that can improve patient outcomes.
16) Science (Scientific):
Science embodies the systematic study of the structure and behavior of the natural world through observation and experiment. In cancer research, scientific methods are applied to investigate the biological mechanisms of cancer development, progression, and treatment strategies, offering insights into potential therapies.
17) Mishra (Misra):
Mishra likely indicates a researcher contributing to the understanding of tumor-fibroblast interactions. Works authored by individuals like Mishra often explore the complex communication pathways between cancer-associated fibroblasts and tumor cells, providing insights into metastasis and tumor growth.
18) Nature:
Nature typically refers to the inherent characteristics or intrinsic features of biological entities. In the context of cancer, understanding the nature of tumor cells and their environment, including the stroma and immune system interactions, is fundamental for effective treatment strategies.
19) Penna:
Penna may reference a specific researcher or a term used in cancer studies, particularly regarding metabolic pathways or fibroblast biology. Contributions from researchers associated with this name advance understanding of how cellular mechanisms influence cancer dynamics.
20) Nauka:
Nauka, which means 'science' in some Slavic languages, may refer to scientific research or scholarly activities related to cancer biology. This signifies the expanding body of knowledge aimed at uncovering the complexities of cancer development and therapeutic strategies.
21) Patel:
Patel could be a researcher noted for their contributions to cancer studies, particularly related to metabolic aspects or interactions within the tumor microenvironment. Individual contributions help formulate better therapeutic approaches that are increasingly personalized.
22) Death:
In cancer, death usually describes the ultimate failure of cellular functions, either at the level of the organism or due to therapeutic interventions targeting cancer cells. Understanding the processes leading to cell death helps in developing effective therapies that aim to eliminate cancerous cells while sparing healthy tissues.
23) Rani:
Rani may refer to a researcher whose work focuses on the metabolic dynamics of cancer cells and the implications of these processes in tumor progression and response to therapy. Their findings contribute to the broader understanding of cancer biology.
24) Post:
Post in a scientific context may imply subsequent studies or findings following a particular research effort. It indicates continued exploration of topics related to cancer biology and therapeutic advancements, emphasizing the evolving nature of research in the field.
25) Cola:
Sola might refer to a scientist involved in cancer research, particularly in dissecting metabolic pathways and their roles in tumor development. Insights from contributions by Sola or researchers alike inform therapeutic strategies and understanding of cancer-related metabolism.
26) Surrounding:
Surrounding encompasses the environment in which tumor cells exist, particularly the role of the tumor microenvironment that consists of stromal cells and extracellular matrix components. This surrounding context is critical for understanding cancer cell behavior and treatment responses.
27) Harvesting (Harvest):
Harvesting in a biological context often refers to the extraction of energy from substrates through metabolic pathways. In cancer research, this can pertain to how tumor cells efficiently utilize available nutrients and metabolites to support their aggressive growth and survival.
28) Relative:
Relative often denotes the relationship between different factors, such as the expression levels of proteins in tumor cells compared to normal cells. This relative measure is crucial for understanding how specific metabolic pathways are altered in cancer.
29) Company:
Company might refer metaphorically to the interactions and relationships between different cell types within the tumor microenvironment. These interactions can significantly influence tumor behavior, progression, and the efficacy of therapeutic approaches.
30) Miṇi (Mini):
Mini could signify concise studies or review articles that summarize key findings in cancer research. Such mini-reviews distill important information, allowing broader dissemination and understanding of current research trends and advances.
31) Vila:
Vila may correlate to a researcher or a term pertinent in the study of cancer biology, especially regarding metabolic interactions. Contributions from researchers associated with this name are critical for understanding the complexities of tumor biology and potential intervention strategies.
Other Science Concepts:
Discover the significance of concepts within the article: ‘Tumor Cell and CAF Metabolic Interplay in Hypoxia vs. Normoxia’. Further sources in the context of Science might help you critically compare this page with similair documents:
Energy source, Extracellular matrix, Gene expression, Angiogenesis, Glucose Uptake, Carbohydrate metabolism, Glucose metabolism, Tumor microenvironment, Lactate dehydrogenase, Cellular metabolism, Metastasis, Cell metabolism, Metabolite, Energy production, Tumor growth, LDH, Oxidative phosphorylation, Tumor cell, Transforming growth factor beta, Aerobic metabolism, Anaerobic metabolism, Growth factor, Breast Cancer Cells, Glycolysis, Glycogenesis, Glucose transport, Warburg effect, Chemokines, Lactate production, Hypoxia, Alpha smooth muscle actin, Cancer-associated fibroblasts, Energy requirement, Tumour Metastasis, Malignant Tumour, Hypoxia inducible factor, Ketone bodies, Metabolic State, Aerobic glycolysis, Tumour microenvironment, Tumour cells, Solid tumor, Biosynthesis, Solid tumour, Glycolytic enzyme, Chemoattractant, Stromal cells, Monocarboxylate transporters, Hypoxic conditions, Tumour growth, Metabolic Reprogramming, Anaerobic glycolysis, Tumor hypoxia, Anticancer therapeutics, Cytoplasmic level.