4T1 Cell Passage Number Affects Tumor Growth and Metastasis in Mice

| Posted in: Science

Journal name: The Malaysian Journal of Medical Sciences
Original article title: Passage Number of 4T1 Cells Influences the Development of Tumour and the Progression of Metastasis in 4T1 Orthotopic Mice
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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Author:

Harishini Rajaratinam, Nur Syahmina Rasudin, Sabreena Safuan, Nurul Asma Abdullah, Noor Fatmawati Mokhtar, Wan Ezumi Mohd Fuad


The Malaysian Journal of Medical Sciences:

(A peer-reviewed, open-access journal)

Full text available for: Passage Number of 4T1 Cells Influences the Development of Tumour and the Progression of Metastasis in 4T1 Orthotopic Mice

Year: 2022 | Doi: 10.21315/mjms2022.29.3.4

Copyright (license): CC BY 4.0


Download the PDF file of the original publication


Summary of article contents:

Introduction

The 4T1 mouse model is a widely recognized tool for studying breast cancer, particularly its metastatic behavior. This study aimed to investigate the influence of cell passage number on the development of a robust 4T1 tumor model. Specifically, the research focused on comparing the outcomes using 4T1 cells of passage numbers 9 and 10 in female BALB/c mice, assessing tumor growth dynamics and metastatic patterns.

Influence of Passage Number on Tumor Modeling

The findings indicated that using 4T1 cells from passage number 10 (P10) resulted in a significantly larger net tumor volume compared to those from passage number 9 (P9) while also exhibiting reduced variability in tumor size. While group A (P9) had only limited metastasis—observed in lungs, liver, and spleen—group B (P10) showed metastasis in the heart, spleen, lungs, and liver, indicating a more aggressive tumor behavior with increased passage number. Analysis revealed that the use of P10 not only yielded a more consistent tumor volume but also increased the extent of metastasis without adversely affecting the overall health status of the mice as severely as with P9 cells.

Conclusion

In summary, the study demonstrates that employing 4T1 cells with a higher passage number (P10) is more effective for creating a reliable tumor model in BALB/c mice, as it prolongs the duration of tumor growth and enhances metastatic potential while minimizing variations in tumor volume. This insight contributes valuable knowledge to breast cancer research and may help optimize experimental designs using the 4T1 model, thereby improving the understanding of tumor biology and the metastatic process. Future research could expand upon these findings by investigating other passage numbers and incorporating gene expression analyses to further elucidate these dynamics.

FAQ section (important questions/answers):

What was the objective of the study involving 4T1 cells?

The study aimed to understand how the passage number of 4T1 cells influences the development of an ideal tumor model for breast cancer research.

What were the methods used in the study with BALB/c mice?

The study divided 24 female BALB/c mice into three groups: control, group A (passage number 9), and group B (passage number 10), administering 4T1 cells intratumorally and monitoring tumor volume and metastasis.

What were the key findings regarding tumor volume in different groups?

Group B showed significantly higher 4T1 tumor volume compared to group A, with a lower coefficient of variation, indicating more consistency in tumor growth with cells of passage number 10.

What was the conclusion regarding the use of passage number in 4T1 models?

The use of 4T1 cells from passage number 10 is more favorable for tumor growth and metastasis in BALB/c mice compared to passage number 9, reflecting better biological properties.

Glossary definitions and references:

Scientific and Ayurvedic Glossary list for “4T1 Cell Passage Number Affects Tumor Growth and Metastasis in Mice”. 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 is a leading health issue characterized by the uncontrolled growth and spread of abnormal cells in the body. It can metastasize to various organs and significantly impacts survival rates. The study of cancer, particularly in models like the 4T1, helps researchers understand tumor biology and seek effective treatments.

2) Table:
In the context of scientific studies, a table organizes data systematically for easy comparison and analysis. Tables help researchers present findings clearly, such as experimental results, statistical values, or demographic information. They play a crucial role in reinforcing the validity of results by allowing for quick visual assessments of data patterns.

3) Study (Studying):
A study is a systematic investigation designed to answer specific research questions or test hypotheses. In the context of cancer research, studies like the one using 4T1 cells focus on understanding tumor growth, metastasis, and the efficacy of various treatment methods, contributing valuable knowledge to the scientific community.

4) Line:
In cell biology, the term 'line' often refers to a specific cell line derived from a particular tissue or tumor type used in experiments. Understanding different cell lines, such as 4T1, can provide insights into cellular behavior and response to treatments, aiding the development of targeted cancer therapies.

5) Animal:
Animal models, such as BALB/c mice in cancer research, are essential for studying disease progression, treatment efficacy, and biological mechanisms in a living organism. They allow researchers to observe tumor development and metastasis in a controlled environment, translating findings to potential human applications in cancer therapies.

6) Arrow:
In scientific diagrams and illustrations, arrows often indicate directionality, flow, or relationships between variables or processes. For example, in cancer research, arrows may represent the metastatic pathways or cellular responses to treatments. They enhance comprehension of complex biological interactions and mechanisms in studies.

7) Sign:
A sign in the context of clinical and experimental studies refers to observable indicators or changes in an organism's health. For instance, the physical symptoms exhibited by mice in a cancer study signify the tumor's progression, enabling researchers to assess treatment outcomes and disease states effectively.

8) Post:
In research, 'post' often refers to periods or measurements taken after an intervention or experimental treatment, such as the post-injection observation of tumor development. This timeframe is critical for evaluating the efficacy of treatments and understanding the dynamics of tumor growth and metastasis.

9) Medicine:
Medicine encompasses the science and practice of diagnosing, treating, and preventing diseases. In relation to cancer research, medicine is central to developing therapeutic strategies, understanding disease mechanisms, and improving patient outcomes through targeted treatments and novel interventions based on experimental findings.

10) Disease:
A disease refers to a pathological condition characterized by a set of symptoms, signs, and abnormalities. Cancer, as a devastating disease, alters normal cellular functions, leading to growth disorders, systemic effects, and potential mortality. Understanding its biology is critical for developing effective therapies and prevention strategies.

11) Nature:
Nature refers not only to the biological aspects of life but also to the inherent characteristics of diseases like cancer. It emphasizes the complex interactions between genetic, environmental, and lifestyle factors that contribute to the development and progression of malignancies, influencing research directions and treatment approaches.

12) Rules:
In scientific research, 'rules' imply established guidelines or principles governing experimentation and analysis. They ensure the validity and reliability of findings, particularly in complex studies like those involving cancer models. Adherence to these rules enhances the integrity and applicability of research conclusions in medicine.

13) Death:
Death, in the context of cancer studies, can refer to the mortality of experimental subjects due to disease progression or treatment response. Understanding the factors leading to death in animal models helps researchers assess the lethality of cancer and the effectiveness of therapeutic interventions, aiming for improved strategies.

14) Hoon:
Hoon refers to a specific researcher associated with studies examining the impact of passage numbers on cancer cells. His work helps illuminate how cellular characteristics evolve over time with passaging, thus influencing experimental outcomes, which is critical for developing therapies and understanding tumor behaviors.

15) Transformation (Transform, Transforming):
Transforming in cancer research often refers to the processes by which normal cells acquire cancerous characteristics. This transformation is central to understanding tumorigenesis and the steps leading to malignant behaviors such as invasion and metastasis, crucial for developing effective treatment strategies.

16) Observation:
Observation in scientific research involves systematically monitoring and recording phenomena to gather data and assess outcomes. In cancer studies, careful observation of tumor development and metastasis in models like the 4T1 mice provides essential insights that inform treatment efficacy and disease understanding.

17) Mutation:
Mutation refers to changes in the genetic material of cells that can lead to cancer development. Mutations may cause cells to grow uncontrollably, contributing to malignancies. Studying mutations in cancer research enhances understanding of tumor genetics and can guide targeted therapies and personal medicine approaches.

18) Activity:
Activity in scientific studies often relates to the measured responses or behaviors of cells or organisms under experimental conditions. For instance, assessing the activity of tumor cells can provide insights into their proliferation, invasiveness, and responses to treatments, informing the overall understanding of cancer biology.

19) Bullock:
Bullock generally refers to a researcher or author in cancer studies. Contributions from such individuals help enhance knowledge regarding disease mechanisms, treatment efficacy, and potential therapeutic innovations. Their published works support ongoing research efforts aimed at improving outcomes for cancer patients.

20) Science (Scientific):
Science is a systematic approach to understanding the natural world through observation, experimentation, and analysis. In cancer research, scientific methods drive progress in uncovering disease mechanisms, developing treatments, and evaluating the effectiveness and safety of therapeutic interventions, ultimately contributing to public health improvements.

21) Family:
Family in a biological context often refers to a classification category used in taxonomy, such as the classification of species involved in specific studies. Understanding the family relationships between different cancer cell lines can provide insights into genetic similarities and the potential applications of findings across species.

22) Kumar:
Kumar typically refers to a researcher contributing to the study of cancer and related scientific inquiries. The work of researchers like Kumar plays a significant role in enhancing understanding of tumor dynamics, cellular responses to treatments, and the possibility of translating findings into clinical applications.

23) Patel:
Patel usually signifies a contributor to the field of cancer research, where their work contributes to understanding tumor biology and treatment methodologies. Insights gained from contributions by researchers named Patel shape ongoing studies, guiding future experiments and enhancing knowledge about cancer therapies.

24) Pine (Pimte):
Pine may refer to a researcher involved in cancer analysis and therapeutic studies. Contributions by researchers like Pine provide valuable knowledge regarding disease mechanisms and effective treatment strategies, thereby advancing the field of oncology and improving patient care through evidence-based practices.

25) Cage:
In the context of animal studies, a cage represents the environment in which experimental subjects are housed. Proper housing is critical for ensuring the well-being of animals used in cancer research, affecting their health, behavior, and responses in experiments, directly impacting research outcomes.

26) Wall:
In a biological research context, 'wall' often relates to cellular structures, such as the cell wall in plants or specific barriers in tissues that can influence cancer invasion. Understanding these walls aids in grasping how tumors interact with surrounding tissues and metastasize.

27) Life:
Life in scientific research underscores the biological aspects of living organisms, particularly in studying diseases such as cancer. Insights into cellular life processes and interactions within ecosystems are vital for comprehending disease development, progression, and potential therapeutic interventions aimed at enhancing life quality.

28) Surrounding:
Surrounding refers to the environment or conditions in which an organism exists, including biological, chemical, and physical factors. In cancer research, surrounding factors can influence tumor growth, invasion, and response to treatment, highlighting the importance of environmental contexts in understanding disease dynamics.

29) Measurement:
Measurement in scientific research is critical for quantifying observable phenomena, such as tumor size, growth rates, or treatment responses. Accurate measurements underpin experimental integrity and facilitate comparisons among different conditions and treatments, enabling researchers to draw meaningful conclusions about cancer behavior and therapy effectiveness.

30) Discussion:
Discussion refers to the analytical dialogue that follows experimental findings in scientific research. In cancer studies, discussions interpret results, connect them to the existing body of knowledge, and propose future research directions or clinical implications, ultimately enriching the understanding of cancer biology and treatment avenues.

31) Antibiotic (Antibacterial):
Antibiotics are substances that inhibit bacterial growth and are often crucial in managing infections during cancer therapies. In research contexts, the impact of antibiotics on experimental models must be carefully considered, as these agents can affect the immune response and overall health of study subjects, influencing study outcomes.

32) Species:
Species refers to a group of organisms that can interbreed and produce fertile offspring. In cancer research, understanding the species used for modeling, such as BALB/c mice, is essential as it impacts immune responses, tumor development, and the translation of findings to human applications.

33) Reason:
Reason in scientific inquiry addresses the rationale behind conducting studies or specific experiments. In cancer research, identifying reasons for particular hypotheses or methodologies allows for clearer interpretations of results and strengthens the understanding necessary for advancements in treatment strategies and disease comprehension.

34) Campu:
In the context of research institutions, the term 'campus' refers to the physical grounds of colleges or universities where research and education activities occur. Research conducted on campus can provide valuable insights into various fields, including cancer studies, fostering collaboration among researchers and enhancing scientific advancements.

35) Roman (Roma):
The term 'Roman' might relate to historical contexts in scientific terminology, like the Roman numerals often used in the classification of studies or experiments. While less directly related to cancer research, the recognition of historical framework helps in understanding the evolution of scientific thought and methodology.

36) Blood:
Blood serves as a critical component in cancer research, as it circulates the body's nutrients, oxygen, immune components, and cancer cells. Studying blood samples can provide insights into the systemic effects of cancer and treatments, helping to monitor disease progression and therapeutic responses.

37) Rich (Rch):
Rich may describe the abundant presence of a substance. In cancer research, it refers to 'rich media' used for cell cultures, designed to support optimal growth conditions. Researchers consider the components and nutrient levels of media to ensure effective experimental setups and favorable cellular responses.

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