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“Lactoferrin Inhibits Hepatocellular Carcinoma Progression by Targeting INTL1 Receptor and Modulating Apoptosis and Cell Cycle Pathways”

**Lactoferrin Inhibits Hepatocellular Carcinoma Progression by Targeting INTL1 Receptor and Modulating Apoptosis and Cell Cycle Pathways**

Hepatocellular carcinoma (HCC) is one of the most prevalent and aggressive forms of liver cancer, accounting for a significant proportion of cancer-related deaths worldwide. Despite advancements in diagnostic tools and therapeutic strategies, the prognosis for HCC remains poor due to its high recurrence rate and resistance to conventional treatments. In recent years, researchers have turned their attention to naturally occurring bioactive molecules for their potential anti-cancer properties. Among these, lactoferrin, a multifunctional glycoprotein, has emerged as a promising candidate for cancer therapy. This article explores the role of lactoferrin in inhibiting HCC progression, with a focus on its interaction with the INTL1 receptor and its ability to modulate apoptosis and cell cycle pathways.

### **Lactoferrin: A Multifunctional Glycoprotein**
Lactoferrin is an iron-binding glycoprotein found in various bodily fluids, including milk, saliva, and tears. It plays a critical role in immune defense, iron homeostasis, and anti-inflammatory responses. Beyond its physiological functions, lactoferrin has demonstrated potent anti-cancer properties in preclinical studies, including anti-proliferative, anti-angiogenic, and pro-apoptotic effects. These properties make lactoferrin a compelling candidate for cancer research, particularly in the context of HCC.

### **The INTL1 Receptor: A Novel Target in HCC**
The INTL1 receptor, a recently identified cell surface receptor, has been implicated in the progression of various cancers, including HCC. Overexpression of INTL1 has been associated with increased tumor growth, metastasis, and resistance to apoptosis. Targeting INTL1 offers a novel therapeutic approach for inhibiting HCC progression. Recent studies have revealed that lactoferrin exerts its anti-cancer effects, in part, by binding to the INTL1 receptor, thereby disrupting its pro-tumorigenic signaling pathways.

### **Mechanisms of Action: Modulating Apoptosis and Cell Cycle Pathways**
Lactoferrin’s ability to inhibit HCC progression is primarily mediated through its effects on apoptosis and cell cycle regulation. These mechanisms are critical for maintaining cellular homeostasis and preventing uncontrolled cell proliferation, a hallmark of cancer.

#### **1. Induction of Apoptosis**
Apoptosis, or programmed cell death, is a natural process that eliminates damaged or abnormal cells. In cancer, this process is often dysregulated, allowing malignant cells to evade death and continue proliferating. Lactoferrin has been shown to restore apoptotic pathways in HCC cells by:

– **Upregulating Pro-Apoptotic Proteins:** Lactoferrin increases the expression of pro-apoptotic proteins such as Bax and